Beatrice Lang
Hermann Schmidt offers a wide variety of high-precision spin and index fixtures for manufacturing environments that require the highest standards in quality. These fixtures are used in various manufacturing functions, including grinding, palletizing, wire EDM, sinker EDM, and inspection. Spin and index fixtures are mostly used for face grinding on a surface grinding or jig grinding ID/OD. The unit also has 15° internal indexing stops. The Grindit Spin Fixture is a popular choice, with its ability to mount any referencing system to any spin and indexing fixtures. Other options include SquareTech, Flatspin, Indexer, and Stainless Steel Rotary Index Fixture.
| Characteristics | Values |
|---|---|
| Manufacturer | Hermann Schmidt |
| Model | Grindit, Indexer, Flatspin, Stainless Steel Rotary Index Fixture |
| Use | Grinding, palletizing, wire EDM, sinker EDM, inspection |
| Material | Stainless steel, tool steel |
| Motor | External or internal |
| Speed | 5-1800 RPM |
| Adjustable stops | 45 |
| Accuracy | 15 arc seconds |
| Indexing plates | Simple, long-lasting |
| Repair cost | $2,915 |
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What You'll Learn
- Spin and index fixtures are used for grinding, palletizing, wire EDM, and inspection
- The Grindit model doesn't need a sine plate to set the adjustable stops
- The indexer model can be left set up in the machine environment
- The Flatspin model is a very versatile tool for spinning and indexing
- The stainless steel model can be used in most manufacturing environments
Spin and index fixtures are used for grinding, palletizing, wire EDM, and inspection
Spin and index fixtures are used in manufacturing environments for a variety of functions, including grinding, palletizing, wire EDM, and inspection. These fixtures provide high precision and accuracy, improving the quality of parts and reducing set-up time.
Grinding is a common application of spin and index fixtures, with the evolution of grinding operations moving from hand grinding to motorized options. The motor delivers steady speeds, allowing for dry grinding and improved operator efficiency. The fixtures are designed for use in high-pressure oil type grinding or when flood grinding chromed materials.
Palletizing services are another important use of spin and index fixtures. These fixtures ensure that specific x-y-z locations are held during the palletizing process, guaranteeing accurate and consistent results.
Wire EDM (Electrical Discharge Machining) is a critical application of spin and index fixtures. The fixtures are manufactured with ceramic bearings, isolating the bearing race from electrical discharge and preventing damage during the EDM process. This allows for tighter tolerances and improved accuracy in manufacturing complex workpieces.
Inspection is also facilitated by spin and index fixtures, with features such as digital readouts allowing for precise setting of indexes while the unit is installed and squared to the machine travel. This enables manufacturers to verify the index position and ensure the accuracy of the manufacturing process.
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The Grindit model doesn't need a sine plate to set the adjustable stops
The Grindit model is a spin fixture with a System 3R Manual Macro chuck mounted central and square. It is a highly versatile tool, used for spinning and indexing. It is manufactured from stainless steel and contains ceramic bearings, allowing it to be used in most manufacturing environments. This includes EDM (Electric Discharge Machining) and grinding applications.
The Grindit model stands out due to its patented interlocking Vernier plates, which enable quick and precise adjustable stop settings. Specifically, the adjustable stops can be set to 1 arc second accuracy, and there can be up to 45 adjustable stops within 15 arc seconds accuracy. This level of precision eliminates the need for a sine plate, which is typically used to set the adjustable stops in other models.
A sine plate, or sine bar, is a precision tool used to measure or set angles. It consists of a hardened, precision-ground body with two precision-ground cylinders at either end. The distance between the centres of these cylinders is carefully controlled, and the top of the bar remains parallel to a line through the centres of the cylinders. By raising one of the rollers by a known distance, the top edge of the bar tilts, forming an angle that can be calculated using the sine rule.
The Grindit model's unique design means that the indexer can remain set up in the machine environment, and the adjustable stops can be moved into location as needed. This feature streamlines the manufacturing process and enhances efficiency. This model is particularly well-suited for those who use non-15° stops on a weekly basis or less.
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The indexer model can be left set up in the machine environment
The indexer's ability to be left set up in the machine environment is a significant advantage, saving time and effort for operators. It eliminates the need for frequent setup and teardown processes, streamlining the production workflow. This feature is particularly useful for businesses that require frequent adjustments or those using non-15° stops on a weekly basis or less.
The indexer model offers enhanced flexibility and convenience. Its adjustable stops can be quickly set to 1 arc-second accuracy using patented interlocking Vernier plates. This precision eliminates the need for a sine plate, simplifying the indexing process. The indexer's internal rotary encoder further enhances its capabilities, allowing for up to 45 adjustable stops within 15 arc seconds of accuracy.
Additionally, the indexer's submersible design enables it to be fully submerged in a variety of operations. This submersion capability expands the range of applications in which the indexer can be utilized. The indexer's motor drive options, including an external motor for dry grinding and an internal motor for fully submerged operations, further contribute to its versatility. The direct-drive motor provides full control over RPM, allowing for adjustments between 5 and 1800 RPM and reversing.
Overall, the ability to leave the indexer model set up in the machine environment is a significant advantage. It streamlines processes, saves time, and enhances the efficiency of grinding and manufacturing operations. This feature, combined with the indexer's precision, flexibility, and submersible capabilities, makes it a valuable tool for businesses requiring frequent adjustments or those utilizing non-15° stops on a weekly basis or less.
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The Flatspin model is a very versatile tool for spinning and indexing
The Flatspin model is a highly versatile tool for spinning and indexing. It is a spin indexer manufactured from tool steel, which means its spindle can be used in a wet environment with pressurization. The unit is sold motorized and comes with a v-block and 5C collet capabilities, although other face tooling options are also available. The Flatspin model has 15° internal indexing stops and adjustable stops for off-angle locking and arc limiting. The adjustable stops can be set by mounting on a sine plate and indicating the angle. The zero-null feature allows for the adjustment of zero +- 8° off of the index origin.
The Flatspin model is a highly customisable tool, with the option to add a System 3R Macro Chuck, an Erowa ITS pneumatic chuck, or a custom stainless steel matrix reference chuck. The Flatspin model can also be used with a variety of referencing systems, such as the System 3R, which allows for the removal and replacement of the chuck with ease. The flexibility of the Flatspin model means it can be adapted to suit a range of manufacturing applications.
The Flatspin model is also available in a smaller size, known as the NBFS Flatspin, which is ideal for use in small spin and index fixtures. This smaller version is manufactured from stainless steel and contains ceramic bearings, making it suitable for use in most manufacturing environments, including Wire EDM, Sinker EDM, and Grinding. The NBFS Flatspin model can be purchased if you are using non-15° stops on a weekly basis or less.
Overall, the Flatspin model is a robust, adaptable, and efficient tool for spinning and indexing, offering a range of features and options to suit various manufacturing needs. Its versatility and accuracy make it a popular choice for many industrial applications.
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The stainless steel model can be used in most manufacturing environments
The stainless steel model of the Hermann Schmidt Spin & Index Fixture can be used in most manufacturing environments. This includes grinding, palletizing, wire EDM, sinker EDM, and inspection. The stainless steel construction allows for indexing functions in the wire EDM, and the ceramic bearings enable the fixture to be used in all EDM operations. The ceramic bearings isolate the bearing race from electrical discharge, preventing any damage during EDM.
The stainless steel model is manufactured with ceramic bearings in a fully submersible package, which allows it to be used in a wide range of manufacturing processes. This submersible feature is particularly useful for spinning and burning in the EDM environment. The internal motor option allows for spinning during flood grinding applications, commonly seen in high-pressure oil type grinding or when flood grinding chromed materials.
The stainless steel model offers improved accuracy and flexibility. The compact design of the SUB-X 1800, along with its optional high RPM internal motor, expands the possibilities for workpieces that can be EDM'd. The small size of the unit also facilitates easy movement from machine to machine. The programmable interface of the SUB-X 1800 allows for precise positioning without the need for indicating a position on a sine plate, resulting in quicker setup times.
The stainless steel model is also available in different configurations to suit specific applications. For instance, the Grindit Spin Fixture can be paired with various chucks, such as the Erowa ITS pneumatic chuck 50 or the System 3R Manual Macro chuck, to meet specific requirements. The Flatspin Spin Indexer is another versatile tool with 15° internal indexing stops and adjustable stops for off-angle locking and arc limiting.
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Frequently asked questions
A spin index grinding fixture is a tool used for spinning and indexing. It is mostly used for face grinding on a surface grinding or jig grinding ID/OD.
There are several types of spin index grinding fixtures available, including the Grindit, Flatspin, and Master-Grind. They are manufactured by different companies, including Hermann Schmidt Precision Workholding and Suburban Tool, Inc.
Spin index grinding fixtures offer several benefits, such as improved accuracy, flexibility, and ease of use. They can be used in various manufacturing environments and allow for less skilled operators to set up the fixture to toolmaker tolerances.
When choosing a spin index grinding fixture, consider the specific applications and requirements of your project. Factors to consider include the type of material being ground, the accuracy required, and the environment in which the fixture will be used. Additionally, consider the features and accessories offered by different models to ensure they meet your specific needs.
