Clamp for hobbing of small-modulus internal spline gear
A technology of internal splines and small modulus, which is applied to gear teeth manufacturing devices, belts/chains/gears, gear teeth, etc., can solve the problems of inconvenient alignment and difficult processing, improve processing accuracy, and eliminate radial The effect of positioning error
Inactive Publication Date: 2016-08-03
王建法
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Problems solved by technology
[0003] The existing center-expanding gear hobbing fixture moves axially through the pull rod with the outer cone structure, so that the outer spline of the elastic expansion sleeve with the inner cone structure (that is, the outer spline with expansion joints) is radially deformed to achieve tension. function, but it is difficult to process and it is inconvenient to align before use
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[0014] The present invention will now be further described in conjunction with specific examples, and the following examples are intended to illustrate the present invention rather than further limit the present invention.
[0015] Such as figure 1 As shown, a small modulus internal spline gear hobbing jig includes a jig base 1, the upper part of the jig base 1 is a round table 2, and the bottom edge of the round table 2 has a stepped surface 3 outward, and the stepped surface 3 is provided with The positioning pin hole 4, the bottom of the positioning pin hole 4 is provided with a spring 5, the base 1 is provided with an axial through hole, the through hole is divided into an upper section 6a and a lower section 6b, and the diameter of the lower section 6b is larger than that of the upper section 6a , the pull bar 7 with pressure plate 8 is placed in the through hole, and the round table 2 overcoat is provided with the spring expansion sleeve 9, and the spring expansion sleev...
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The invention relates to the technical field of gear machining, in particular to a clamp for hobbing of a small-modulus internal spline gear. The clamp for hobbing of the small-modulus internal spline gear comprises a clamp base, wherein the upper part of the clamp base is a circular truncated cone; a step surface is outwards arranged on the bottom side of the circular truncated cone; a positioning pin hole is formed in the step surface; an axial through hole is formed in the base; a spring power lock sleeves the circular truncated cone; and an inner hole which is matched with the outer side surface of the circular truncated cone is formed in the spring power lock. The clamp can be matched with an expansion core of an internal spline of the gear, radial positioning errors of parts are eliminated effectively, and therefore, machining precision can be improved greatly. Generally, radial runout of a machined gear can be about 0.03 mm, and the clamp is suitable for enterprises which produce gears in a large scale and have relatively high requirements on hobbing precision.
Description
technical field [0001] The invention relates to the technical field of gear processing, in particular to a jig for gear hobbing of small modulus internal spline gears. Background technique [0002] The function of the fixture is to keep the predetermined position of the workpiece unchanged during the processing process, which includes two meanings: 1) positioning function: to ensure that the position of the processed gear is correct before processing; 2) clamping function: to ensure that the processed gear is cut Its positioning position does not change. Gear hobbing fixtures are divided into two types: platen hobbing fixtures and expanding center hobbing fixtures. in. The pressure plate type gear hobbing fixture has a certain gap between the positioning shaft diameter of the fixture or the external spline itself and the gear internal spline, that is, geometric eccentricity. Gear machining accuracy. Expanding center gear hobbing fixture, because of the use of external sp...
Claims
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IPC IPC(8): B23F23/06
CPCB23F23/06
Inventor 王建法王继纯
Owner 王建法