Internal gear processing method and special gear shaping fixture
A processing method and technology for internal gears, applied in gear tooth manufacturing devices, manufacturing tools, metal processing equipment, etc., can solve the problems of rapid tool wear, low processing efficiency, large processing allowance, etc., to reduce wear, improve efficiency, The effect of improving the machining accuracy of gear teeth
Active Publication Date: 2014-10-22
上海航发机械有限公司
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Problems solved by technology
Since the secondary clamping of the workpiece will bring difficulties in aligning the workpiece, the shaping of the internal gear in the prior art generally does not divide the rough and fine machining processes, and the workpiece is clamped once to complete the processing of the entire tooth profile. The disadvantage of this processing method is The machining allowance is large, the machining efficiency is low, and the tool wears quickly. Since the blade of the gear shaping knife is generally a space curve, it is not easy to grind, which affects the machining accuracy of the internal gear.
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[0016] figure 1 Take the involute internal gear as an example to illustrate the process of the internal gear machining method proposed by the present invention. The thin line tooth profile in the figure is the rough machining process. The trapezoidal contour cutter and indexing mechanism are used on the ordinary slotting machine, and the forming method is used for machining. The intermediate tooth profile formed; the thick line is the final tooth profile formed by the gear shaper using the gear shaper in the finishing process. The part between the two tooth profiles is the reserved finishing allowance .
[0017] The structure and working principle of the special gear shaping fixture for internal gear processing proposed by the present invention can be passed figure 2 with image 3 Explain that the base 1 is installed on the gear shaper, with a counterbore on the base, into which the annular cage 3 is placed. There are several radial holes in the cage, and steel balls 10 with the...
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The invention provides an inner gear machining method and a special gear shaping clamp. The processing method comprises the following steps: firstly carrying out rough machining on wheel teeth by virtue of the common shaping machine, adopting an indexing mechanism and a shaping tool with a trapezoidal cutting edge to machine gear grooves in a one-by-one manner, obtaining a trapezoidal middle tooth profile which is very close to the final tooth profile of an inner gear, and remaining a small amount of fine-machined allowance; and then adopting the shaping tool with a conjugate tooth profile on the gear shaping machine to carry out fine machining on the wheel teeth. The special gear shaping clamp comprises a base, pressing plates, an adjusting screw, a screw, a pressing nut, a steel ball, a retaining frame, a sliding block, sliding block bolts, sliding block nuts, a positioning rod and a positioning pin, and the special gear shaping clamp has the main functions of aligning the peripheral positions of the inner gear and the gear shaping tool and clamping a workpiece. In the inner gear machined by adopting the method, the gear shaping efficiency can be effectively improved, the wear of the gear shaping tool can be reduced and the machining accuracy of the wheel tooth can be improved.
Description
Technical field [0001] The invention belongs to the technical field of mechanical manufacturing technology and equipment, and specifically relates to an internal gear processing method and a special gear shaping fixture. Background technique [0002] The machining of internal gears in mechanical manufacturing generally adopts the gear shaping process. The gear shaping cutter has a blade profile conjugate to the tooth profile of the internal gear and is processed by the principle of generative generation. Since the secondary clamping of the workpiece will bring about difficulties in aligning the workpiece, the gear shaping of the internal gear in the prior art generally does not divide the rough and finishing processes, and the workpiece is clamped to complete all tooth profile processing. The disadvantage of this processing method is The machining allowance is large, the machining efficiency is low, and the tool wears quickly. Because the blade of the gear shaper is generally a s...
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IPC IPC(8): B23P15/14B23F23/06
Inventor 王仲伟崔建昆张丽华
Owner 上海航发机械有限公司