walter rotary table free sample

The latest TANiH Evolution range from Walter, with major developments over earlier models with major increases in speed and power transmission, a new compact design and a Stainless Steel body. Incredible accuracy specification on all standard models, that is far and away ahead of similar sized competitor’s products. The Walter TANiH-100 is a high speed rotary table ideally suited to small to medium drilling and tapping centres or for small VMC machines, with a spindle nose diameter of 86mm with options to accept a 160mm (6”) or 198mm (8”) faceplate or can accept a standard or power chuck. The unit has a 32mm spindle nose location which passes directly through the table and which has a centre height of 100mm in the vertical position. This device in the first instance is a vertical and horizontal device. An excellent carrying capacity of 50kg vertically and 220kg horizontally or 100kg between centres and speeds up to 105rpm dependent on motor selection. (example given is with a 3000rpm motor). Net weight of this device is 13kg. The Walter TANiH-100 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 left hand side on this device and may restrict the Y axis capability in certain circumstances, the centre hole of 32mm is available should you want to machine long bar components that need to be mounted through the centre. This range of Walter devices now come with dual lead worm and wheel, the extreme quality of this product even on this diameter provides an impressive repeatability of +/- 3 seconds of arc. Walter is one of the oldest and original manufacturers from Germany and in our experience build a very fine device with a very long service life, probably greater than those we have experienced from other German makers. Walter products carry a standard one year parts and labour warranty and have a full working partnership with CNCROTARY. COM. This device may take from 4 to 6 weeks to configure as required.

To read the table position, the operator turns a micrometer knob to center one of the circle graduations in an aperture that appears to be 3 times or so the width of the circle line. Once the graduation is centered in the aperture, the circle degree value is read, and then the subsidiary value -- usually expressed in arcminutes and arcsecond is read from a micrometer-knob display.

I"ve used rotary tables having this type of display made by Leitz and by Heidenhain, on rotary tables made by Eimeldingen, Troyke, and an Italian-made table that had only an importer"s name. If I"m remembering right, the Leitz system position-measurement uncertainty was +/- 2 arcsecond, the Heidenhain uncertainty +/- 3 arcsecond if properly installed.

Both glass- circle and Inductosyn scale systems require that their circle graduations be very well centered on the rotary axis. This need for precise centering has been their marketplace downfall, as their correct alignment at installation is a painstaking and time consuming process.

In contrast, the "optical encoder" systems are easier and much faster to install. Of course, early optical encoders had their own weakness, readhead lamps. In the mid 1980s, my employer was in the market for a new rotary table that would take a 10,000+ pound workpiece. Having been very satisfied with a 1 meter Eimeldingen rotary table, we inquired of Eimeldingen. Eimeldingen told us that neither the Leitz nor Heidenhain glass-circle systems were still available, and they were reluctant to fit an Inductosyn system. Instead, the recommended using a Heidenhain ROD / RON 700 angle encoder.

We ended up buying a 48 inch Knight rotary table, which had a 50,000 pound capacity and an Inductosyn scale system. (For what it"s worth, the Knight table"s weakness was it Compumotor electricals. After a couple of years we replaced the Compumotor equipment, and lived well.)

Today"s encoders use LED illumination, which has substantially eliminated the lamp-failure concern. If buying a new rotary table today, even I would choose an angle-encoder position sensor.

The 2-axes NC-dividing head TANiH2S-Evolution , with its two full CNC axes, is characterised by the highest efficiency with a very compact design. The WALTER TRIPLEX CLAMPING SYSTEM and the option of having a direct measuring system in both of the axes gives you the highest precision and effectivity in your production of parts and subassemblies. Together with the 3 axes of the machine or machining centre, a full 5-axes machining can be realised.NC controlled tilting range from -5° – +95°

The 2-axes NC-dividing head TANiH2-S evolution-XS. The rotation axis without a counter bearing is suitable for mediumheavy machining forces and gives you the value to reach the component from 4 sides! A full 5-axes machining can be realised. The option of having a direct measuring system in both of the axes gives you the highest precision and effectivity in your production of parts and subassemblies.NC controlled tilting range from +120°/-120

Employing our TAD series dividing heads with torque-motor (direct drive) offers you new manufacturing possibilities, due to the high speed and dynamic movement. The encoder is mounted directly to the spindle, which eliminates any kind of backlash. These units are available as table top versions (TAD) or built-in version (TED).Highly dynamic units with accelaration up to 20.000°/sec²

RTN Rotary tables, with a horizontal, non-lifting faceplate, are designed for use on NC-controlled machine-tools and machining- centres. Face-plate diameter ranging from Ø250 mm up to Ø2.000 mm.acceptance of high machining forces

The manual tiltable NC-dividing head TANiP-S, allows for a free inclination of the whole unit from a horizontal to a vertical position. The option of a reduction gear drive enables an easier handling. The exact tilting position can be determined by a nonius. Adigital readout is available as option.Inclinable from 0° – 90°

The indexing units in the VTW series are manual indexing devices with a stable construction and low height, for rapid and simple manual indexing. The required indexing angle can be engaged rapidly and directly by means of the built-in indexing plate. The standard indexing plate with 24 notches permits 15° divisions.Special indexing plates are available.Hardened and ground indexing spindle with high precision runout

The tailstock series RSe is designed to meet the requirements of modern manufacturing technologies. Functionallity for the use on state of the art machining centres as well as a stable and rigid design are the main aimof these units. These tailstocks can be used either in right- or left hand design. Hydraulic or pneumtic options for automatic movement and clamping are available. Standard centre heights ranging from 80 to 320 mm.Rigid design with big handwheel

Programmable CNC positioning controller type CPS or CDS, providing special functions adapted to rotary tables or dividing heads with position controlled drive systems. Easy and comfortable programming and operation due to menue assisted sequences. Automatic clamping and control, processing.

This article focuses on rotary surface grinding. The aim is to give the user the necessary information to set the correct grinding parameters. All parameters are directly compared to standard surface grinding to understand this process better. Apart from the rotary movement of the table, rotary surface grinding is the same a standard surface grinding. The rotary movements are converted into linear movements to support this argument of sameness. This conversion allows for a better understanding of the rotary process.

For both processes, rotary and standard surface grinding, the wheel surface speed ranges between 25 and 45 m/s, with 35 m/s being a good starting point.

The theoretical average chip thickness is a function of the depth of cut ae and the speed ratio qs. The target value of the chip thickness hm should be around 0.25 µm, with an upper limit of around 0.5 µm. At values higher than 0.5 µm, conventional grinding wheels tend to break down. The above statement is, of course, equally valid for reciprocating and rotary surface grinding.

When calculating the overlap ratio for rotary grinding, one looks at the relationship of the feedrate vw per one table revolution, as shown in Illustration 15:

Assuming the grinding wheel width bs is 25 mm, the feedrate vw is 70 mm/min, and the table rotation is 17 RPM, the overlap ud would be a factor of 6 as shown in the spreadsheet of Illustration 16:

To generate a spreadsheet from the instructions given in this article is relatively simple. The speed ratio is not constant as the table RPM of the rotary grinders known to the author have constant feedrates and constant table RPM. Hence, one must assume a "middle" or average diameter, as shown in Illustration 16. In general, the grinding would not take place in the center of the rotary table anyway. As the wheel position moves towards the center of the rotating table, the surface speed of the table decreases. However, it would be easy to make a CNC program that takes the decreasing surface speed into account and compensates by proportionally increasing the table RPM as shown in Illustration 17:

Assuming a table diameter variation from 500 mm to 100 mm, the RPM ranges from 17 to 84 RPM is one were to compensate and achieve a constant speed ratio of 72 as in this example.

Going back to reciprocating surface grinding, the calculation of the parameters is similar. However, as the table moves linearly, all the parameters are constant. Again, making a spreadsheet is not complicated.

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.

Univ. swivel-tilt- turntable similar to lid, Maho milling machine tablemounting table for Univ. Tool milling machineTable size 680 x 340 mmSlot width 14 mmSlot spacing 45 mm Rotatable 360° (1 turn on handwheel = 4° on table)Nonius 240 graduation lines in minutesTiltable /- 30° (drive via square with threaded spindle)Pivoting 30° (drive via square with threaded spindle)- 7x T-slot 14 mmm- Mounting plate 320 x 220 mmDimension L x W x H 780 x 470 x 320 mmWeight approx. 180 kgguter

Welding rotary tables increase work flexibility, productivity and quality. Rotary tables also support the welder at work and thus guarantee a safe working environment and better working ergonomics.

The main advantage of PEMA rotary tables is that the workpieces can always be set in the best possible welding position. This can increase welding productivity by up to 70 %.

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Burlap, Searsucker named to “hottest” eatery list:Two local restaurants owned by Enlightened Hospitality Group --- the San Diego restaurant company headed by nightclub impresario James Brennan and chef Brian Malarkey ---- were the only local eateries named to OpenTable’s Top 100 Hot Spot Restaurants in the United States for 2011. Burlap is a cowboy/Asian fusion restaurant opened last summer in Del Mar Heights Plaza and Searsucker opened in the Gaslamp Quarter in 2010. The awards were based on the opinions of nearly 5 million reviews submitted by verified OpenTable diners at more than 12,000 restaurants nationwide. California restaurants led the rankings with 25 of the top 100.

Wine, Brews and Blues Festival: Rotary Club of Bonsall hosts its 17th annual fundraising gala with more than 80 wineries, six local breweries and a dozen local and national food vendors from 5:30 to 10 p.m. May 19 at the California Center for the Arts, Escondido. The event includes a silent auction and live music on two stages by the Bill Magee Blues Band, Antonio Pontarelli, Restless Blues Band, Not for Hire and Euphoria Brass Band. Tickets are $65, or $45 for designated drivers. bonsallrotary.com .

Le Diner a San Diego: Tickets are now on sale for this unique dining event, described as a flash mob underground dinner party, which makes its first Southern California appearance on May 25 in San Diego. Launched a few years ago in Europe,Le Dinerarrived in the U.S. last year, with an outdoor picnic-style pop-up dinner party for 3,500 in San Francisco. Details and location of the dinner party are kept secret until the day of the event, but as many as 4,000 people will be invited. Diners are asked to dress in all white and bring their own food, beverages, chairs, linens, utensils and table decor. Tables will be provided. Cost is $100 per table of four. To register, visit ledinerasandiego.info.

Red Door Chef’s Market Dinners: Chef Miguel Valdez of The Red Door in Mission Hills will lead diners on a farm-to-table culinary evening at 5:15 p.m. June 20. Guests will meet Valdez at the restaurant, take a culinary tour of the Mission Hills Farmers Market where he’ll talk to farmers and purchase items for dinner, then they’ll return to the restaurant for a four-course dinner. Cost is $45 or $75 with wine pairings. Visit thereddoorsd.com or call 619-295-6000.

Flavor Del Mar, Del Mar: Chef Brian Redzikowski’s new dishes include Skuna Bay Salmon with endive, tangerine, zucchini, tomato confit and olive oil pudding; Alaskan King Crab Hand Roll with soy paper, sesame, fried onion and pickled carrot; Lobster-Prosciutto “Bouillabase” with sweet shrimp, squid fennel, spinach and grilled sourdough; Watermelon & Gioia Burrata with pistachio, tomato and balsamic; and Washimi Wagyu Beef Ribeye with potato puree, seasonal vegetables and soy glaze. The restaurant also offers live jazz by The Bossa from 6-8 p.m. Thursdays and DJs Mike White and Paul Arther from 7:30-11 p.m. Fridays. Visit flavordelmar.com .

Gordon Biersch Brewery Restaurant, Mission Valley: Through May 13, spring specials include Roasted Vegetable Flatbread, Grilled Chicken with Herbed Cream Sauce, Garden Turkey Burger, Panko Dusted Salmon, Fresh Spring Salad, Boutique Burger and Chocolate Mousse Cupcake. The spring beer selection to pair with these entrees is Maibock. Visit gordonbierschrestaurants.com .

P.F. Chang’s: The Asian fusion restaurant chain has a new lunch menu with 20 combination plates priced at less than $10. Choices include chicken, beef, shrimp, noodle and vegetable dishes served with choice of hot and sour soup, egg drop soup or mixed greens salad. There’s also the new Dim Sum Lunch, which includes two orders of steamed dumplings with choice of soup or salad for $7.45. Visit pfchangs.com .

Roppongi Restaurant & Sushi Bar, La Jolla: The newly expanded menu features seasonal tapas that will change every few months. Spring dishes include Crispy Quinoa Cakes with coconut curry apples, celery, raisins and mango chutney; Yaki Soba with spring vegetables; daily seasonal fish specials and jidori chicken with crispy skin, shaved brussels sprout salad and a variety of steak dishes.

Sur la Table:The Carlsbad location offers cooking classes at 1915 Calle Barcelona (in The Forum shops). Email cooking046@surlatable.com, call 800-243-0851 or visit surlatable.com/browse/storeCalendar.jsp?storeId=046 .

Tender Greens San Diego:Executive chef Pete Balistreri will host a cooking demonstration on how to prepare and pickle vegetables at home from noon to 2 p.m. Saturday at Williams-Sonoma, Fashion Valley mall, 7007 Friars Road, Suite 591A, in San Diego. Balistreri’s spiced baby carrots won the 2011 Good Food Award. Reserve to 619-295-0510.

Taking place at Vollmer’s headquarters in Biberach, Germany, the three-day symposium will deliver in every aspect. For manufacturers that are yet to see the latest technology advancements, V-Days will offer an opportunity to see the new solutions for rotary tool machining. This will include demonstrations of the latest additions to the V-Grind product series, the V-Hybrid 260 erosion-grinding machine tool, and the V-Laser 370. For service shops and manufacturers of circular saw blades, the event will be an opportunity to see the new CS 860 and CSF 860 machines for the processing of tooth top, face and sides of circular saws. As a full-line supplier of sustainable grinding, eroding and laser machining technologies, the company will have much more available to see at the event.