koma rotary table free sample

Tsudakoma had been providing best-in-class rotary tables for over 100 years, offering multiple models and configurations to ensure seamless integration with your machining centers. Koma Precision has been distributing Tsudakoma’s tables for over 40 of those years and our North American sales team and in-house engineers will work with you to determine which model best suits your machining needs.

KOMA Precision Inc. introduces a new improved line of extra-large center bore, dual disc hydraulic clamping rotary tables from Tsudakoma. Like all Tsudakoma rotary tables, RCB Series has the proprietary dual lead worm gear system with ultra-precision cross roller bearings. The Tsudakoma dual lead gearing system delivers the optimal balance between power, durability and smooth cutting performance.

Three new models are available, with table diameter of RCB-350, R being 8.45", RCB-450, R with 10.4" and RCB-550, R with 12.4". The RCB Series rotary tables can be mounted either vertically or horizontally. Various options such as chucks, tailstocks, support spindles, and faceplates are available. Pneumatic and Hydraulic rotary joints for automatic load and unload of the work piece are also available.

"Koma Precision Inc. and Tsudakoma share a commitment to providing quality products that maximize the performance of machine centers," states Frank Cerrito, General Manager for KOMA Precision. "The features offered on the RCB Series are ideal for large-diameter work piece manufacturing that is mainly seen in the oil/energy industry."

Notes: 1. For RN-100, RNA-160 and 200 models, “Spindle end” replaces “Table top” 2. Indexing accuracy for tables with scales reflects Heidenhain encoder accuracies.

The latest RNA range from Tsudakoma, with major developments over earlier models with major increases in speed and power transmission, with new high power pneumatic clamping system. The Tsudakoma RNA-201 is an ideal device for the smaller to mid size VMC machines with a spindle nose diameter of 120mm with options to accept a 200mm (8”) or 250mm (10”) faceplate or can accept a standard or power chuck. The unit has a 65mm spindle nose location with a generous location depth of 45mm with 45mm directly through the table and a has a centre height of 160mm in the vertical position. This device in the first instance is a vertical and horizontal device with options for a backmount motor, which can be found under product code RNA-201R,B. An excellent carrying capacity of 125kg vertically and 250kg horizontally or between centres and speeds up to 41. 6rpm dependent on motor selection. (example given is with a 3000rpm motor). Net weight of this device is 61kg. The Tsudakoma RNA-201 CNC rotary table without motor, can be prepared to suit any interface at additional cost (see our interface listings for details and costs for “external interface” (motor, switch, cable and connector requirements if you already have a “4th axis interface” in the machine) and machine interface costs (if you do not have the additional axis fitted). Motor is mounted to the right hand side on this device and may restrict the Y axis capability in certain circumstances, the centre hole of 45mm is available should you want to machine long bar components that need to be mounted through the centre. This range of Tsudakoma devices now come with dual lead full depth worm and wheel, which means that there is less load on individual teeth improving wear and torque performance over and above the conventional standard gear. Tsudakoma is one of the oldest and original manufacturers from Japan and in our experience build a very fine device with a very long service life, probably greater than those we have experienced from other Japanese makers. Tsudakoma products carry a standard one year parts and labour warranty and have a full working partnership with CNCROTARY. COM. This device may take from 2 to 3 weeks to configure as required.

In the market for a rotary table? The checklist of requirements starts with speed, accuracy and rigidity. Will it be used for contour machining? Do you need high-speed indexing for high-volume parts? What features and capabilities will help in the short and long term within the industries your company serves? CTE spoke with multiple rotary table manufacturers to discuss market trends, product innovations and add-ons that can improve overall machine tool performance.

In addition to a standard rotary table, many manufacturers require additional system features to meet the special machining requirements necessary in production facilities, according to Randy Conley, rotary table product manager at CNC Engineering Inc., Enfield, Conn. “Today’s rotary table customers typically look for a turnkey package that includes an additional axis interface, control options, rotary table hardware, installation, training and a complete documentation process. We also have to offer accessories like workholding fixtures, tailstocks, risers and hydraulic power units,” he said.

Off-the-shelf rotary tables are not always enough as customers seek equipment made specifically for their individual machining applications and the accessories. “For example, the application may require an outboard support spindle and a trunnion plate. A subplate or riser may be required. These parts would all be designed based on a particular manufacturing process for a particular machine,” Conley said.

CNC Engineering’s custom rotary table comes with a single PVC cable with a waterproof connector that can be connected or disconnected in a few seconds with a half turn. This cable has proven to be highly durable and remains flexible after years of use. Image courtesy CNC Engineering.

Conley said small improvements through the years have been the norm for rotary tables. “Most commonly, that has meant higher speeds and greater clamping torque. Many rotary table manufacturers offer worm wheel models that are able to run at 100 rpm or more, within a limited-duty cycle. Pneumatic clamping torque is often in the range now that could only be provided with a hydraulic clamping system just a couple of years ago,” he added.

Many manufacturers offer direct-drive rotary tables that eliminate the worm gear (see chart on page 66). “These tables can offer higher speeds than the traditional gear drive tables but, depending on the application, the drive torque may be lower. Furthermore, users may find it necessary to retune the servo drive for different applications to maintain optimal performance and stability,” Conley added.

“These direct-drive rotary tables specialize in eliminating backlash and can provide a stiff mechanical system for highly dynamic applications,” said Gregory Kane, marketing manager at IntelLiDrives Inc., Philadelphia. “Integrated with precision bearings and ring encoders, these tables provide high performance for indexing applications compared to other mechanical transmission rotary systems.”

Today’s rotary table users seek products that are accurate, efficient and easy to use, according to Frank Cerrito, general manager at Koma Precision Inc., East Windsor, Conn. “Our customers are looking for automatic fixturing to increase production and reduce errors, for example. They’re asking for higher speeds, higher accuracy and less backlash.”

These tables are being purchased for old and new machine tools, according to Conley. “Often our customers would like to be able to use an older rotary table on a new machine, as well as an older machine. Depending on the control vintages, we can often accommodate that need,” he added.

The Weiss rotary indexing ring has a large central opening to allow a customer to position all tooling and cables internally. Image courtesy Weiss North America.

Additional considerations play a part in choosing the right rotary table. This includes everything from number of axes, position requirements, faceplate size, motor location and energy requirements. “A customer may need a low-profile rotary table that reduces rotor inertia, improves start/stop behavior and enhances velocity control compared to conventional rotary systems,” Kane said. “This is due to the lightweight, direct-drive motor, resulting in precise bidirectional speed and position control, which is critical for high-speed motion contouring.”

Weiss North America Inc. says its index tables are sized properly so the use of an overload clutch is not needed in a jam-up situation. Overload clutches increase the maintenance cost of the table, according to John Treter, the Willoughby, Ohio, company’s product sales manager.

“Our tables are also filled with oil at the factory and will never need to be changed,” Treter said. “Because of these two differences, Weiss is a maintenance-free solution. We also manufacture risers, tool and stationary plates and machine bases. This saves our customers the hassle of purchasing multiple components from multiple vendors.”

The size of the through-hole is an additional factor. “A table with a large center hole allows [running] routing cables and pressure/vacuum lines through the aperture, placing test objects into the aperture, and inserting work tools and installing slip rings,” Kane said.

“Sometimes there may not be a pre-engineered solution for keeping a rotary table connected to the control throughout a pallet change,” Conley continued. “Designing and building a system for a particular machine model is often more work than a customer wants to take on. CNC Engineering has developed several types of cable management systems. If we’re dealing with a new model, we typically customize one of our existing systems to adapt it to a new machine configuration.”

Weiss North America introduced the first rotary indexing ring, which features a large central opening. “This allows the customer to internally position all tooling, cables, etc. and to work from the inside out, saving sought-after floor space,” Treter said. “From there, we moved to servo mechanical, offering another option utilizing the same design yet incorporating the flexibility of servo technology.”

Koma Precision, which distributes Tsudakoma rotary tables, offers a detailed comparison chart (www.komaprecision.com) for those interested in some of the advantages and disadvantages of a worm wheel vs. a direct-drive system. Here are some of the differences that distinguish the rotary tables from one another.

20.INSURANCE – All buyers, or the buyer’s riggers must provide the auctioneer, owner and landlord a certificate of insurance in amounts acceptable to the above parties prior to removal of any machinery and equipment.

We bought an "externally controlled" table. We bought it with the TPC-Jr. Controller. The controller comes pre-wired to accept an M-code activated input signal to tell the box "rotate the Rotary". You use the control box to program the actual index angles.

The Tsudakoma rotary tables can be "direct wired" into your control as well, rather than the OEM unit, depending on your control model. If you have the option, I would recommend this route, rather than the separate control box, but both have their advantages...

A follow-up. I decided that since my rotary table was originally a Centroid factory install...or so the PO believed...I went with the parameters right off the current Centroid schematics. I used 24vDC to the red and black wires, and connected the blue to the rotary input on the Allin1DC. Succcess! The rotary table now homes and 99% of the position error messages went away. The system test finally completed so the obnoxious warning about the set-up not being complete has disappeared from every start up.

On the other side...I still cannot figure out the nuances of the rotary table. It weighs at least 200lbs and has no markings at all. I have googled for days trying to find any similar tables, and there simply are no pictures of similar ones. I blew air into the 2 tube fittings. Absolutely nothing happens. No air escapes anywhere, and the table does not clamp. The air that comes out when I remove the pressure smells like heavy gear oil. I have to assume they are oil feed lines to the 2 ball bearings for the rotor.

Another option is the hoses may be for a hydraulic clamp, and I am not using enough air pressure to activate it. The pneumatics on the Bridgeport are all 3/8” lines, and the tubes into the rotary table are 1/4”. I am at a loss. I may have to tear down the entire unit to figure out how it works if nobody has any ideas?!? The table has no perceptible backlash at all...are there tables that do not require clamping features? What keeps going through my mind is that the X,Y and Z do not have clamps??

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A rotary table is a precision work positioning device used in metalworking. It enables the operator to drill or cut work at exact intervals around a fixed (usually horizontal or vertical) axis. Some rotary tables allow the use of index plates for indexing operations, and some can also be fitted with dividing plates that enable regular work positioning at divisions for which indexing plates are not available. A rotary fixture used in this fashion is more appropriately called a dividing head (indexing head).

The table shown is a manually operated type. Powered tables under the control of CNC machines are now available, and provide a fourth axis to CNC milling machines. Rotary tables are made with a solid base, which has provision for clamping onto another table or fixture. The actual table is a precision-machined disc to which the work piece is clamped (T slots are generally provided for this purpose). This disc can rotate freely, for indexing, or under the control of a worm (handwheel), with the worm wheel portion being made part of the actual table. High precision tables are driven by backlash compensating duplex worms.

The ratio between worm and table is generally 40:1, 72:1 or 90:1 but may be any ratio that can be easily divided exactly into 360°. This is for ease of use when indexing plates are available. A graduated dial and, often, a vernier scale enable the operator to position the table, and thus the work affixed to it with great accuracy.

Rotary tables are most commonly mounted "flat", with the table rotating around a vertical axis, in the same plane as the cutter of a vertical milling machine. An alternate setup is to mount the rotary table on its end (or mount it "flat" on a 90° angle plate), so that it rotates about a horizontal axis. In this configuration a tailstock can also be used, thus holding the workpiece "between centers."

With the table mounted on a secondary table, the workpiece is accurately centered on the rotary table"s axis, which in turn is centered on the cutting tool"s axis. All three axes are thus coaxial. From this point, the secondary table can be offset in either the X or Y direction to set the cutter the desired distance from the workpiece"s center. This allows concentric machining operations on the workpiece. Placing the workpiece eccentrically a set distance from the center permits more complex curves to be cut. As with other setups on a vertical mill, the milling operation can be either drilling a series of concentric, and possibly equidistant holes, or face or end milling either circular or semicircular shapes and contours.

with the addition of a compound table on top of the rotary table, the user can move the center of rotation to anywhere on the part being cut. This enables an arc to be cut at any place on the part.

Additionally, if converted to stepper motor operation, with a CNC milling machine and a tailstock, a rotary table allows many parts to be made on a mill that otherwise would require a lathe.

Rotary tables have many applications, including being used in the manufacture and inspection process of important elements in aerospace, automation and scientific industries. The use of rotary tables stretches as far as the film and animation industry, being used to obtain accuracy and precision in filming and photography.

KOMA Precision is the foremost source for the finest the world has to offer in machine tool Productivity Innovation. For over 30 years KOMA has been providing superior service and support. KOMA precision is the largest distributor of NC rotary tables and indexers in the world with over 30,000 rotary table installations. KOMA is also the world’s largest supplier for Alberti (the originator and innovator of productivity tooling) with over 12,000 angle heads and live tools installations. Our 25,000 sq. ft. facility features a completely equipped machine shop, state of the art inspection equipment, a product demonstration showroom, and a multi-million dollar new product and spare parts inventory. All Koma products are covered by a one year warranty and backed by a service department with experience and expertise second to none. Koma application engineers - with AutoCAD® and SolidWorks® 3D CAD support – offer torque calculations and interference drawings at no-charge to ensure products purchased from Koma will be the best available for the required machining operations. Koma Precision distributes: • Tsudakoma Rotary Tables & Indexers • Alberti Angle Heads, Live Tooling, and Specialty Tooling • Koma Tool Presetters • Romai Angle Heads • Swiss Tools for CNC Type Machines • Koma Special Application Tools

Koma Precision distributes Tsudakoma’s line of rotary tables. The pictured table is part of the TWM line, which best pairs with high-production single- or dual-spindle vertical machining centers that require five-axis machining.

Live demonstrations with customer parts headline the show at Koma Precision’s bright green booth. This IMTS, the company is showcasing Tsudakoma rotary tables in common fixturing setups for automotive parts. In addition to stock Tsudakoma rotary tables, Koma Precision is also emphasizing its specialty rotary tables, which are born from collaboration between Tsudakoma, Koma Precision and the end user.

Koma Precision is also showcasing Alberti NEO right angle heads, which the company says add versatile high-torque and coolant-through options to its line of machine tool accessories. Video displays highlight overhead hydraulic products for high-production horizontal and vertical machining centers, as well as the company’s machine tool presetters with auto-measuring functions.

“Automation is the trend of the industry,” says company president David Meo, and all the products Koma Precision is demonstrating at the show are primarily optimized for robotic tending rather than manual tending.

2 ROTARY TABLE SELECTION GUIDE OMA PRECISION has the FINEST the world has to offer in machine tool Productivity Innovation KKOMA Precision is the foremost source for the finest the world has to offer in machine tool Productivity Innovation. For over 35 years KOMA has been providing superior service and support. KOMA precision is the largest distributor of NC rotary tables and indexers in the world with over 30,000 rotary table installations. KOMA is also the world s largest supplier for Alberti (the originator and innovator of productivity tooling) with over 12,000 angle heads and live tools installations. 1

4 BROTHER MACHINE CENTERS SX1 RWE SERIES RWE-160 L RWE-200 L RWA SERIES RWA-160 L RWA-200 L RBS SERIES RBS-160 RN MULTI SERIES RN-R-2 RN-R-3 RN-R-4 TWA SERIES TWA-130 TWA-160 TBS SERIES TBS-130 TBS TH AXIS TILTING RTT-111, CA TSUDAKOMA ROTARY TABLES TTNC SERIES TTNC S700X1 RWE SERIES RWE-160 L RWE-200 L RWA SERIES RWA-160 L RWA-200 L RBS SERIES RBS-160 RN MULTI SERIES RN-R-2 RN-R-3 RN-R-4 TWA SERIES TWA-130 TWA-160 TBS SERIES TBS-130 TBS TH AXIS TILTING RTT-111, CA TTNC SERIES TTNC S0X1 RWE SERIES RWE-160 L RWE-200 L RWA SERIES RWA-160 L RWA-200 L RBS SERIES RBS-160 RN MULTI SERIES RN-R-2 RN-R-3 RN-R-4 TWA SERIES TWA-130 TWA-160 TBS SERIES TBS-130 TBS TH AXIS TILTING RTT-111, CA TTNC SERIES TTNC SX1 S700X1 S0X1

5 BROTHER MACHINE CENTERS R450X1 RWE SERIES RWE-160 L RWE-200 L RWA SERIES RWA-160 L RWA-200 L RBS SERIES RBS-160 TSUDAKOMA ROTARY TABLES TWA SERIES TWA-130 TBS SERIES TBS TH AXIS TILTING RTT-111, CA R650X1 RWE SERIES RWE-160 L RWE-200 L RWA SERIES RWA-160 L RWA-200 L RBS SERIES RBS-160 TWA SERIES TWA-130 TBS SERIES TBS TH AXIS TILTING RTT-111, CA TC-32BNQT RWE SERIES RWE-160 L RWE-200 L RWA SERIES RWA-160 L RWA-200 L RBS SERIES RBS-160 TWA SERIES TWA-130 TWA-160 TBS SERIES TBS-130 TBS-160 R450X1 R650X1 TC-32BNQT 4

12 ROTARY TABLE DIMENSIONS RWE, RWA, RBS-Series, RN-MULTI & RTT-111 CA ROTARY TABLE DIMENSIONS (Drawings Not To Scale) RWE-160L Øh Ø120h RWE-200L RWA-160L h Øh h Ø120h RWA-200L 6-M10 depth 20(6/8eq.sp) RBS-160 Ø10H7 depth Øh (Øh7) 21 Ø55H7 37.5±0.02 Ø10H Ø56 Ø42 Ø40H8 Ø S=1 2 Sectional view of turntable Pallet Chuck RTT-111, CA Pallet Chuck RN-R-2/3/ Please contact Koma Precision to confirm OKK / Tsudakoma Rotary Table working envelope.

13 ROTARY TABLE DIMENSIONS TWA, TBS & TTNC-Series ROTARY TABLE DIMENSIONS (Drawings Not To Scale) Ø TWA h TWA Ø90h TBS Øh TBS ± TTNC Please contact Koma Precision to confirm OKK / Tsudakoma Rotary Table working envelope. 12

14 ROTARY TABLE SPECIFICATIONS RWE-Series Specifications Dimensions = mm Table Model RWE-160 RWE-200 Versions available L L Spindle outer diameter mm h7 120h7 Table diameter (optional) mm (160, 200) (200, 250) Center height mm Center bore Nose Diameter mm 55H7 65H7 Thru Diameter mm Servo motor* Brother Brother Maximum motor speed rpm 3,000 3,000 Maximum table speed rpm Clamp Nm (ft. lbs.) 250 () 400 (295) Indexing accuracy arc sec. ±12.5 ±10 Net Weight kg (lbs.) 44 (97) 62 (136) Allowable wheel torque Nm (ft. lbs.) 206 (152) 288 (212) * Other motors & RPM are machine specific RWA-Series Specifications Dimensions = mm Table Model RWA-160 RWA-200 Versions available L L Spindle outer diameter mm h7 120h7 Table diameter (optional) mm (160, 200) (200, 250) Center height mm Center bore Nose Diameter mm 55H7 65H7 Thru Diameter mm Servo motor* Brother Brother Maximum motor speed rpm 5,000 4,000 Maximum table speed rpm Clamp Nm (ft. lbs.) (369) 0 (590) Indexing accuracy arc sec. ±12.5 ±10 Net Weight kg (lbs.) 38 (84) 61 (134) Allowable wheel torque Nm (ft. lbs.) 206 (152) 288 (212) * Other motors & RPM are machine specific RBS-Series Specifications Dimensions = mm Table Model RBS-160 Versions available R Spindle outer diameter mm h7 Table diameter (optional) mm (160, 200) Center height mm 160 Center bore Nose Diameter mm 55H7 Thru Diameter mm 40 Servo motor* Brother Maximum motor speed rpm 5,000 Maximum table speed rpm Clamp Nm (ft. lbs.) 700 (516) Indexing accuracy arc sec. ±7.5 Net Weight kg (lbs.) 55 (121.2) Allowable wheel torque Nm (ft. lbs.) -- * Other motors & RPM are machine specific RN-Series Specifications Table Model Versions available Dimensions = mm RN--2,3,4 R, L Spindle outer diameter mm h7 Table diameter (optional) mm (115) Center height mm 135 Center bore Nose Diameter mm 50H7 Thru Diameter mm 30 Servo motor* Brother Maximum motor speed rpm 4,000 Number of spindles Maximum table speed rpm Clamp Nm (ft. lbs.) (59) Indexing accuracy arc sec. ±30 Net Weight [dual spindle] kg (lbs.) ( ) Allowable wheel torque Nm (ft. lbs.) 178 (131) * Other motors & RPM are machine specific 13

15 ROTARY TABLE SPECIFICATIONS TWA-Series Specifications Model TWA-130 TWA-160 Tilt Range -17 ~ ~ +110 Spindle outer diameter mm 90h7 h7 Table diameter (optional) mm (135) (160 or 200) Center height at 90 position mm 150 Center bore Servo motor* Nose Diameter (w/ face plate) mm 55H7 (40H7) 55H7 (50H7) Thru Diameter mm Rotary Tilt Rotary Tilt Brother Brother Brother Brother Maximum motor speed rpm 5,000 5,000 5,000 5,000 Maximum table speed rpm Clamp system Clamp [ psi] Nm (ft. lbs.) (369) Pneumatic Dual Taper (369) (369) Indexing accuracy arc sec. ±20 - ±15-0 (590) Tilting accuracy arc sec. - ± ±22.5 Net Weight kg (lbs.) 76 (167) 127 (279) Allowable wheel torque - rotary Nm (ft. lbs.) 152 (112) 200 (147) * Other motors & RPM are machine specific Dimensions = mm RTT-111, CA Specifications Model Dimensions = mm RTT-111,CA Tilt Range -17 ~ +107 Spindle Output See Options & Accessories Center height at 90 position mm 190 Servo motor (Fanuc)* Rotary Brother Tilt Brother Maximum motor speed rpm 5,000 5,000 Speed reduction ratio 1/60 1/120 Maximum table speed rpm Inertia converted into motor shaft x 10-3 kg.m Clamp system Clamp Nm (ft. lbs.) Pneumatic Dual Taper (369) (369) Indexing accuracy arc sec. ±20 - Indexing repeatability arc sec. ±2 - Tilting accuracy arc sec. - ±30 Net Weight kg (lbs.) 98 (216) Allowable wheel torque - rotary Nm (ft. lbs.) 152 (112) * Other motors & RPM are machine specific Model TBS-130,H TBS-160,H TBS-Series Specifications Tilt Range -30 ~ +110 Dimensions = mm Table diameter mm 135 (160 or 200) Table height at 0 position mm 225 (250 w/faceplate) 270 ( w/faceplate) Center height at 90 position mm Center bore Nose Diameter mm 55H7 (40H7) 55H7 (50H7) Thru Diameter mm Servo motor (Fanuc)* Rotary Tilt Rotary Tilt Alpha 2i Alpha 2i Alpha 2i Alpha 4i Maximum motor speed rpm 5,000 5,000 5,000 5,000 Speed reduction ratio 1/48 1/60 1/60 1/60 Maximum table speed rpm Inertia converted into motor shaft x 10-3 kg.m Clamp system Pneumatic Pneumatic Pneumatic Pneumatic Holding 72psi Nm (ft. lbs.) 700 (516) 700 (516) 700 (516) 700 (516) Indexing accuracy arc sec. ±10 - ±10 - Indexing repeatability arc sec. ±2 - ±2 - Net Weight kg (lbs.) (276) 160 (353) Allowable work inertia kg.m * Other motors & RPM are machine specific TTNC Specifications Model Dimensions = mm TTNC Tilt Range -17 ~ +107 Spindle outer diameter mm 90h7 Table diameter (optional) mm (135) Table height at 0 position (w/ face plate) mm 230 (255) Center height at 90 position mm 160 Center bore Servo motor* Nose Diameter (w/ face plate) mm 55H7 (40H7) Thru Diameter mm 35 Rotary Brother Tilt Brother Maximum motor speed rpm 5,000 5,000 Maximum table speed rpm Clamp system Pneumatic Pneumatic Clamp [ psi] Nm (ft. lbs.) 127 (94) 284 (209) Indexing accuracy arc sec. ±20 - Tilting accuracy arc sec. - ±22.5 Net Weight kg (lbs.) (220) Allowable wheel torque - rotary Nm (ft. lbs.) 93 (69) * Other motors & RPM are machine specific 14