Positioning tool for gear pitch circle clamp

Abstract

The invention provides a positioning tool for a gear pitch circle clamp. The positioning tool comprises a clamp body; the upper end of the clamp body is provided with a gear workpiece mounting groove;the clamp body is provided with a positioning disc on the end face of a gear workpiece at the lower end of the gear workpiece mounting groove; the clamp body is provided with a plurality of wedge blocks at the periphery of the gear workpiece mounting groove; the clamp body is provided with a retainer at the upper portion of the gear workpiece mounting groove, the retainer comprises a pressing plate pressed on the gear workpiece, and ball structures are arranged at the portions, corresponding to the wedge blocks, of the lower end of the pressing plate and comprise balls which are in contact fit with the two toothed surfaces of the pitch circle of the gear workpiece and the end surfaces of the wedge blocks respectively; the upper end of the retainer is provided with a plurality of elastic pressing structures fixed to the clamp body. The positioning tool can realize a deep molten salt pump test under the action of variable liquid. The positioning tool meets the precision requirement of agear at first, then improves the working efficiency and is suitable for mass production; finally, the tool is convenient to disassemble and assemble and easy to understand.

Description

technical field [0001] The invention relates to the technical field of gear processing, in particular to a gear pitch circle fixture positioning tool. Background technique [0002] A gear is a mechanical element with gears on the rim that continuously mesh to transmit motion and power. The application of gears in transmission has appeared very early. At the end of the 19th century, the principle of generative gear cutting method and special machine tools and cutting tools using this principle appeared one after another. With the development of production, the stability of gear operation was paid more attention. [0003] Gear inner hole machining is one of the important indicators of precision requirements in gear machining. The existing machining of the inner hole of the gear is to use a three-jaw chuck to clamp the inner hole of the outer circle of the gear or grind the inner hole, but it is very difficult to ensure that the radial runout of the gear index circle and the ...

AI Technical Summary

Problems solved by technology

The existing machining of the inner hole of the gear is to use a three-jaw chuck to clamp the inner hole of the outer circle of the gear or to grind the inner hole, but it is very difficult to ensure that the radial runout of the gear index circle and the inner hole is qualified, especially for odd-numbered gears Even more difficult, if you use a dial indicator to find the coaxiality of the spur gear and then process the inner hole, the processing efficiency is very low, the labor cost is high, and it is not suitable for mass production

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