Device capable of clamping gears with various hole diameters

Abstract

The invention discloses a device capable of clamping gears with various hole diameters. According to the device, a conical central sleeve (3) is installed on a machine frame (1); a mandrel (2) is installed in the conical central sleeve (3); the mandrel (2) and the conical central sleeve (3) are tightly locked through a transverse screw (8); when a gear (5) is installed into the device, wedge blocks (6) and a key groove positioning block (12) are placed into the device for positioning; a gasket (4) is installed between the wedge blocks (6) and the conical central sleeve (3); and a pressing plate (9) and a lock nut (10) are installed. The device is characterized in that the one key groove positioning block (11) and the two wedge blocks (6) are arranged, and a plurality of positioning holes are formed in the mandrel (2).

Description

technical field [0001] The invention belongs to the field of mechanical processing, in particular to a clamping device for mechanical processing. Background technique [0002] In the existing mechanical processing technology, the mandrel positioning is generally used for gear processing, and then the clamping method is tightened with pull nails. However, when the processing volume is small and the product size needs to be changed frequently, the fixture has to be replaced frequently. The current technology Among them, when the difference is not large, a small-sized fixture is used to process a large-sized product, but in this case, the mandrel cannot be used for positioning, and the alignment needs to be re-aligned during processing. When the phase size difference is large, some small-sized fixtures are used Adding a transition ring to the mandrel can pass through this way. Although its positioning is more reliable, due to the processing error of the transition ring, it stil...

AI Technical Summary

Problems solved by technology

[0002] In the existing mechanical processing technology, the mandrel positioning is generally used for gear processing, and then the clamping method is tightened with pull nails. However, when the processing volume is small and the product size needs to be changed frequently, the fixture has to be replaced frequently. The current technology Among them, when the difference is not large, a small-sized fixture is used to process a large-sized product, but in this case, the mandrel cannot be used for positioning, and the alignment needs to be re-aligned during processing. When the phase size difference is large, some small-sized fixtures are used Adding a transition ring to the mandrel can pass through this way. Although its positioning is more reliable, due to the processing error of the transition ring, it still has to be aligned when clamping the new size, and such an assembly clearance The circular runout of the gear is too large, and the mandrel positioning of this kind of fixture is generally fixed, and the thread itself is relatively fragile. When the thread is damaged after multiple clamping, the entire fixture has to be replaced again, and for When processing products with different thicknesses, the length of the mandrel may not be suitable. When the thickness is too large, it cannot be compressed. When the thickness is too small, although it can be clamped, a very thick washer must be added to reduce the compression efficiency. , and the operation is inconvenient. This situation is aimed at new product research and development enterprises. Basically, there is one product for each type, so that the development of the product must also develop the corresponding fixture, which increases the development cycle and development cost, which is not conducive to shortening the development cycle and Manufacture and storage of various jigs

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