Machining method for easily deformed precision parts
A technology of precision parts and processing methods, applied in the field of parts processing, to achieve the effect of eliminating internal stress and reducing stress and deformation
Inactive Publication Date: 2011-12-28
湖南凯斯机械股份有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0007] The traditional processing technology scheme still cannot effectively avoid the deformation. In order to overcome the problems existing in the traditional processing technology method, the present invention provides a new processing method, which effectively solves the deformation problem
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0016] Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail as follows:
[0017] Embroidery machine case such as figure 1 As shown in the embroidery machine casing 2 in the middle, each positioning surface is rough milled first, and then the rough machining is as follows figure 2 In the main shaft hole 7 and other positions with a large margin, leave a margin of 0.5mm on one side of the hole, and then perform cryogenic treatment: positive temperature treatment at 140°C for 5 hours, air cooling; negative temperature treatment at -50°C for 2.5 hours, Return to room temperature in the air; positive temperature treatment at 140°C for 5 hours, cool to ≤60°C with the furnace, take out the air cooling, finish milling the positioning surface, and then position with the finished positioning surface, and finish machining the spindle hole 7; figure 1 Insert the positioning rod 1 in the main shaft hole 7, place the posit...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a machining method for easily deformed precision parts, such as the shell of an embroidery machine. The method comprises the following steps of: performing rough machining on a part, and leaving an allowance of less than 0.5 mm for a single side; performing cryogenic treatment on the part; positioning the part by using a positioning rod for finish machining after the cryogenic treatment, and controlling finish machining allowance to be small enough; and performing the cryogenic treatment on the part to eliminate internal stress, wherein positioning and compacting in the finish machining is performed by using the positioning rod, and a part which has high requirement on positioning hole position is machined. The machining method solves the problems in the conventional method that: 1, positioning by using a positioning surface is avoided, so that clamping deformation due to uneven positioning surface is avoided; 2, a mandrel is over-positioned, and the mandrel has a machining allowance of only 0.5 mm, is an aluminum part, and has a relatively small cutting force, so that after the mandrel is compacted, a small force is required for holding the embroidery machine shell; therefore, the clamping deformation is avoided; and 3, the cryogenic treatment is performed to eliminate the internal stress before the finish machining, so that stress deformation is minimized.
Description
technical field [0001] The invention relates to a processing method for precision parts, in particular to a processing method for parts that are easily deformed and require high precision. Background technique [0002] For a long time, the processing of precision parts has adopted traditional processing methods. For example, the embroidery machine casing, the material of this part is aluminum, the thinnest wall thickness of the casting is only 5-6mm, and the position of the needle bar hole to the spindle hole is required to be 0.02. The part is easy to deform, and the force deformation is serious in the clamping, and the stress deformation still occurs after processing. [0003] Traditional processing technology plan 1: process the side positioning surface of the part, position it on the side, press it on the fixture, and process the spindle hole and needle bar hole at one time. [0004] Problems in this processing method: 1. The side is compressed during clamping, and the...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/04
Inventor 王伟叶平周为炜
Owner 湖南凯斯机械股份有限公司