An eccentric fixture and a method for producing eccentric shafts by using the eccentric fixture

A technology of eccentric shaft and eccentric clamp, which is applied in the direction of eccentric shaft, clamping, clamping device, etc., can solve the problems such as unsatisfactory eccentricity, and achieve the effect of simple structure, small eccentricity error of parts, and convenient production and use

Active Publication Date: 2017-06-27
上海上机精密量仪有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-precision eccentric fixture to solve the problem that the existing technology cannot satisfy the eccentricity.

Method used

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  • An eccentric fixture and a method for producing eccentric shafts by using the eccentric fixture
  • An eccentric fixture and a method for producing eccentric shafts by using the eccentric fixture
  • An eccentric fixture and a method for producing eccentric shafts by using the eccentric fixture

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Embodiment

[0024] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 As shown, the embodiment of the present invention provides an eccentric clamp, which is used to clamp both ends of the eccentric shaft 32, and the eccentric shaft 32 is installed between the headstock and the tailstock of the machine tool. The eccentric clamp includes a clamp body 1, Clamping ring 7, preferably, the clamping body 1 is in the shape of a cylinder, and its left end face is provided with a top hole 41 along the central axis, and the left end face of the clamping body 1 is divided into two parts by a "well"-shaped groove 2 on the left end face of the clamping body 1. A central block 4 and four eccentricity-adjusting top blocks 3, the central block 4 is located in the middle of the left end face of the clamp body 1, the eccentricity-adjusting top block 3 is distributed around the center block 4, the top hole 41 is located at the center of the center block 4, and the center of the hole The axi...

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Abstract

The invention provides an eccentric fixture comprising a fixture body and a clamping ring. The fixture body is cylindrical in shape, and the left end thereof is provided with a center hole and a steel ball; the left end face of the fixture body is provided with a groove in the shape of Chinese character jing; the groove in the shape of Chinese character jing divides the left end face of the fixture body into a central block and four eccentricity adjusting top blocks, wherein the central block is located at the center of the left end face of the fixture body and the four eccentricity adjusting top blocks are provided with screw holes in the radial direction of the fixture body; eccentricity adjusting screws are screwed into the screw holes; a circular arc groove facing the eccentric blocks is arranged at the bottom of the groove in the shape of Chinese character jing; the right end face of the fixture body is provided with a journal bush in the shape of a round tube; the inner circle hole of the journal bush is coaxial with the fixture body; the journal bush is provided with a clamping groove; the clamping ring is arranged on the outer circle wall of the journal bush in a sleeving manner. The eccentric fixture has the advantages of simple structure, convenient manufacture and use, small error in eccentric distance of parts, great uniformity, high precision and high production efficiency, and is suitable for machining parts with small eccentric distances.

Description

technical field [0001] The invention belongs to the field of fixtures, in particular to a high-precision eccentric fixture. Background technique [0002] There are usually two ways to process eccentricity on the shaft: one is to use a cam grinder for grinding. This method requires the help of a special machine tool, which not only has a high cost input, but also has a large eccentricity error and poor machining accuracy. The other is to machine the eccentric center hole directly on the shaft, and then grind it on the cylindrical grinder. This method needs to process eccentric center holes one by one, the production efficiency is low, and the consistency of eccentricity exceeds 0.02mm. Although the machining accuracy is slightly higher than the first method, it still cannot meet the processing requirements of high-precision eccentricity, and is not suitable for processing high-precision Precision eccentric shaft parts. [0003] At present, most manufacturers use misaligned...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/00B23P15/00
CPCB23P15/00B23Q3/00B23Q2703/10F16C3/18
Inventor 王鼎华
Owner 上海上机精密量仪有限公司
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