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Gear slotting and trepanning process

A gear and process technology, which is applied in the field of gear slotting and hole opening technology, can solve the problems of overlapping of weight-reducing holes and threaded holes, and achieve the effects of avoiding overlapping, good supporting effect, and avoiding scrapping

Active Publication Date: 2022-03-11
CHONGQING XINGJI GEAR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention intends to provide a gear slotting and hole opening process to solve the problem that the existing processing method easily leads to overlapping of weight-reducing holes and threaded holes

Method used

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  • Gear slotting and trepanning process
  • Gear slotting and trepanning process
  • Gear slotting and trepanning process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A gear slotting and drilling process, comprising the steps of:

[0045] Step 1: using a mold to forge four weight-reducing holes 35 on the workpiece 17 at one time, and the four weight-reducing holes 35 are evenly distributed on the workpiece 17;

[0046] Step 2: using existing technology to make teeth on the workpiece 17;

[0047] Step 3: Pull out the keyway with the groove tool;

[0048] Step 4: Position the workpiece 17 with the tapping positioning tool, and process the threaded hole 36 .

[0049] like figure 1 , figure 2 and image 3 As shown, the groove positioning tool used in step 3 includes a hinge plate 16, a guide sleeve 15 and a positioning mechanism, the guide sleeve 15 is fixed on the hinge plate 16 by bolts, the groove washer 18 is set on the guide sleeve 15, and the groove washer 18 is also fixed on the hinge plate 16 by bolts. The hinge plate 16 is provided with a limit pin 21, the limit pin 21 penetrates the slotted washer 18 along the axial dire...

Embodiment 2

[0063] The difference between this embodiment and Embodiment 1 is that the included angle A is 30 degrees, and the workpiece 17 is as Figure 8 As shown, that is, when four uniformly distributed weight-reducing holes 35 are opened, and the included angle A is 30 degrees, the weight-reducing holes 35 and the threaded holes 36 will not overlap.

Embodiment 3

[0065] The difference between this embodiment and Embodiment 1 is that the included angle A is 60 degrees, and the workpiece 17 is as Figure 9 As shown, that is, when four evenly distributed weight-reducing holes 35 are opened, and the included angle A is 60 degrees, the weight-reducing holes 35 and the threaded holes 36 will not overlap.

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Abstract

The invention relates to the technical field of gear machining, in particular to a gear slotting and trepanning process which comprises the following steps that firstly, at least one lightening hole is forged in a workpiece at a time, and the lightening holes are evenly distributed in the workpiece; step 2, making teeth; thirdly, a key groove is pulled out through a groove pulling tool; fourthly, threaded holes are machined; the groove broaching tool comprises a capstan, a guide sleeve and a positioning mechanism, the guide sleeve and the positioning mechanism are both fixed to the capstan, a broach groove axially penetrates through the guide sleeve, the positioning mechanism is located on one side of the guide sleeve, and a limiting pin is fixed to the capstan and used for being inserted into the lightening hole. An included angle A formed between the limiting pin and the broach groove is used for avoiding overlapping of the lightening hole and the threaded hole. According to the scheme, an existing machining sequence is changed, the positions of the lightening holes are combined, the positions of the key grooves are determined through the groove broaching tool, overlapping of the threaded holes and the lightening holes can be effectively avoided, workpiece scrapping is avoided, and the problem that in the prior art, the lightening holes and the threaded holes are prone to overlapping is solved.

Description

technical field [0001] The invention relates to the technical field of gear processing, in particular to a gear slotting and hole opening process. Background technique [0002] A gear is a mechanical element with teeth on the rim that can continuously mesh to transmit motion and power. It is a toothed mechanical part that can mesh with each other. The use of gears plays a very important role for most mechanical devices. [0003] After the camshaft gear is cast, it is necessary to make teeth, process key grooves, lightening holes, threaded holes, etc. The existing processing method is to make teeth first, pull out the key groove according to the angular relationship between the tooth and the key groove, and then according to the position of the key groove Drill the lightening holes and the threaded holes where the threaded holes need to be in a 90 degree relationship to the keyway. The existing processing methods cannot accurately determine the relative position between the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14
CPCB23P15/14
Inventor 邱前远陈干
Owner CHONGQING XINGJI GEAR
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