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Process method of small eccentricity multi-eccentric and bidirectionally eccentric axle

A processing method and technology of eccentricity, applied in the direction of metal processing equipment, manufacturing tools, other manufacturing equipment/tools, etc., can solve the problems of low machining accuracy, high cost, and demand for eccentricity

Inactive Publication Date: 2006-04-26
GUIZHOU QUNJIAN PRECISION MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the eccentric shaft with large eccentricity (eccentricity greater than 4mm), whether it is one-way eccentric (the same eccentric direction) or two-way eccentric (the eccentric direction is opposite, forming an angle of 180°), whether there is only one eccentric outer circle, There are still two or more eccentric outer circles. There are two traditional processing methods: one method is to use a jig boring machine to punch a center hole at both ends of the shaft and an eccentric center hole. Because the eccentricity is large, there are The location of the center hole and the eccentric center hole are sufficient. The machining accuracy of the eccentric distance of the eccentric shaft processed by this method depends on the accuracy of the center hole and the eccentric center hole. Once the center hole and the eccentric center hole are processed , the processing accuracy of the eccentric distance is determined, and it cannot be changed and adjusted again; another processing method is to only punch the center hole at both ends of the shaft instead of the eccentric center hole, and the eccentric outer circle is processed by a special crankshaft grinder The grinding process is completed. Using this method to process the eccentric shaft has the advantage that the machining accuracy of the eccentric distance can be high or low according to the requirements of the drawing, which is suitable for mass production. The disadvantage is that a special crankshaft grinder is required. High cost
For eccentric shafts with small eccentricity, especially bidirectional eccentric shafts, or eccentric shafts with the same eccentric direction but with two or more eccentric outer circles, it is not possible to use a coordinate boring machine to drill center holes at both ends of the shaft and The method of machining the eccentric center hole is very simple, because the eccentricity is too small, there is no position for drilling the center hole and the eccentric center hole, so it can only be ground by a special crankshaft grinder
As mentioned earlier, this method of processing eccentric shafts is only suitable for mass production, and the cost of single-piece small-batch production is very high

Method used

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  • Process method of small eccentricity multi-eccentric and bidirectionally eccentric axle
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  • Process method of small eccentricity multi-eccentric and bidirectionally eccentric axle

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Process a batch of eccentric shafts, the eccentric shaft has two eccentric outer circles, namely A 1 Reference outer circle 1 and A 2 Reference outer circle 2, and the eccentric directions of the two eccentric outer circles are opposite, forming an angle of 180°; A 1 The eccentricity of reference outer circle 1 is e 1 =3mm, A 2 The eccentricity of the reference outer circle 2 is e 2 =3mm;

[0020] In order to meet the requirements, the following processes and methods are adopted:

[0021] First, the processing of shaft blanks.

[0022] ①According to the dimensional accuracy requirements of the outer circle of the A datum, the machining method of fine turning or grinding is adopted, and all the outer circles of the A datum are processed to the drawing requirements. A 1 Reference outer circle 1 and A 2 The reference outer circle 2 is left with a machining allowance of 2-3mm, and at the same time, a 30mm long craftsman 4 is left at each end of the shaft.

[0023] ②Press figure...

Embodiment 2

[0033] Example 2: Processing a batch of eccentric shafts, the eccentric shaft has three eccentric outer circles, namely A 1 Reference outer circle 1, A 2 Reference outer circle 2 and A 3 Reference outer circle 3, A 1 Reference outer circle 1, A 2 The reference outer circle 2 is eccentric in the same direction, A 3 The reference outer circle 3 is eccentric in the opposite direction, that is, an included angle of 180° is formed; A 1 The eccentricity of reference outer circle 1 is e 1 =2.5mm, A 2 The eccentricity of the reference outer circle 2 is e 2 =3.5mm, A 3 The eccentricity of the reference outer circle 3 is e 3 =3mm;

[0034] In order to meet the requirements, the following processes and methods are adopted:

[0035] First, the processing of shaft blanks.

[0036] ①According to the dimensional accuracy requirements of the outer circle of the A datum, the machining method of fine turning or grinding is adopted, and all the outer circles of the A datum are processed to the drawi...

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Abstract

This invention discloses a method for processing bipartite spindle eccentric axis of a small eccentricity and several eccentric centers, which comprise the following steps: a, making shaft blank, making all excircle of A benchmark meeting the required size, wherein the benchmark excircle of An is en, processing craft frame in the end of the axle; b, making excircle adjusting jacket whose eccentricity is e; c, setting the excircle adjusting jacket on craft frame, adjusting the eccentricity e; using the excircle adjusting jacket to drive the eccentric axis to rotate, turning the eccentric excircle of A1 benchmark to meet the required size; d, processing the benchmark excircle of A2íóA3 as the step c, adjusting the needed eccentric; e, removing the craft frame.

Description

Technical field: [0001] The invention relates to a mechanical processing method, in particular to a processing method of an eccentric shaft. technical background: [0002] Eccentric shafts are widely used in various mechanical transmission devices, especially in involute planetary gear reducers with small tooth difference. The eccentric shaft has one-way eccentricity (the eccentricity direction is the same), and the two-way eccentricity (the eccentricity direction is opposite, at an angle of 180°); there is a large eccentricity (eccentricity greater than 4mm), and a small eccentricity (eccentricity is less 4mm); There are only one eccentric outer circle, and there are two or more eccentric outer circles. For eccentric shafts with large eccentricity (eccentricity greater than 4mm), whether it is one-way eccentric (the same eccentric direction) or two-way eccentric (the eccentric direction is opposite, at an angle of 180°), whether it has only one eccentric outer circle, There are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B5/08B23B5/18B23P23/02
Inventor 石年平
Owner GUIZHOU QUNJIAN PRECISION MACHINERY
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