Short gear shaft efficient machining method

A processing method and wheel shaft technology, applied to components with teeth, belts/chains/gears, gear teeth, etc., can solve the problems of wasting materials, failing to meet high efficiency, low cost requirements, increasing costs, etc., and achieve cost reduction , Save material costs, improve production efficiency

Inactive Publication Date: 2017-08-22
CHINA COAL ZHANGJIAKOU COAL MINING MACHINERY
6 Cites 1 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0002] At present, in the existing technology, due to the limitation of the machining range of the machine tool, the machining of short gear shaft milling and grinding has always been to lengthen the process at one end of the workpiece, and then milling and grinding
After milling and...
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Abstract

The invention relates to the technical field of gear milling and gear grinding in the machinery manufacturing industry, in particular to a high-efficiency machining method for a short gear shaft. In the existing processing methods, most short gear shaft workpieces need to be ground after tooth milling, but in the process of tooth milling and gear grinding, due to the short workpiece, it cannot be directly processed due to the limitation of the machining range of the machine tool. The workpiece must be lengthened to a position where the radius of the hob or the grinding wheel can be released before the normal processing of the workpiece can be carried out. After the workpiece is processed, the lengthened part is removed, which wastes both man-hours and materials. The invention provides a high-efficiency machining method for a short gear shaft, which thoroughly solves the above-mentioned problems of waste of materials and man-hours. The method utilizes the extended part to process two parts at a time, which not only reduces the cost, but also improves the production efficiency.

Application Domain

Gear teeth

Technology Topic

EngineeringMachining process +3

Image

  • Short gear shaft efficient machining method
  • Short gear shaft efficient machining method
  • Short gear shaft efficient machining method

Examples

  • Experimental program(1)

Example Embodiment

[0011] Depend on Figure 1~3 It can be seen that the processing of the short gear shaft is completed according to the following steps:
[0012] Step 1, calculate blanking size, and carry out blank blanking and heat treatment;
[0013] Step 2, rough and finish turning the workpiece;
[0014] Step 3, initial grinding of outer circles A and B;
[0015] Step 4, milling the key grooves at both ends of the workpiece;
[0016] Step 5. Align two points on the outer circle of A and B, and the runout is within 0.05mm. Roughly and finely mill the teeth to ensure the common normal line size required by the process;
[0017] Step 6, the middle outer circle is protected against seepage, and the gear is carburized and quenched;
[0018] Step 7, the outer circle and rounded corners in the middle of the second finishing car;
[0019] Step 8, finely grind the outer circles of A and B at both ends, the middle outer circle and the addendum circle, and grind the end faces;
[0020] Step 9: Align the ground outer circle, rough and finely grind the teeth at both ends to meet the drawing requirements;
[0021] Step 10, cut off to ensure the full length of the workpiece, and the processing of the workpiece can be completed.
[0022] When working, calculate the blanking size of the blank, perform rough and finish turning processes on the lathe, and perform initial grinding of the outer circle on the cylindrical grinder as the alignment benchmark for milling teeth.
[0023] When milling teeth, first clamp one end of the workpiece with the chuck of the workbench, hold the other end of the workpiece with the tip, fix the workpiece, and align the two outer circles of the workpiece that have been ground, and the runout is within 0.05mm. Choose a suitable hob, adjust the angle of the tool holder of the machine tool, and mill the teeth from top to bottom. After processing one end of the tooth, exit the hob, unload the workpiece, drop a clamp, and process the other end of the tooth according to the previous sequence.
[0024] After tooth milling, anti-carburizing treatment is carried out on the middle outer circle, and the gear carburizing and quenching treatment is carried out. After the heat treatment, the outer circle is finely ground on the outer cylindrical grinding machine as the alignment reference of the grinding teeth.
[0025] When grinding the gear, use the upper and lower tops of the gear grinding machine to withstand the two ends of the workpiece to fix the workpiece, align the outer circle that has been ground, and process according to the gear grinding program. After the gear grinding is completed, cut off on the lathe, separate into two pieces, and cut off one end to ensure the full length of the workpiece, and then complete the processing of the workpiece.

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