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Processing method of long and thin workpiece thread and chuck fixture assembly

A technology for slender workpieces and processing methods, applied in metal processing machinery parts, manufacturing tools, metal processing equipment, etc., can solve the problems of inability to complete processing, low processing efficiency, and high labor intensity, and achieve simple and convenient use and reduced labor intensity. , the effect of expanding the length range

Active Publication Date: 2014-09-24
NANJING MEISHAN METALLURGY DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taking the processing of triangular threads of different sizes such as M6~M30 with a length of more than 200 mm on a lathe as an example, there are three processing methods usually used. One is to clamp the workpiece on the lathe chuck, and the tailstock thimble is used to withstand it, and a 60° tool is used to clamp the workpiece. Layered turning thread, in the process of processing, due to the slender workpiece, vibration will be generated during turning, which will affect the quality of thread processing. labor intensive
The second is to clamp the workpiece on the lathe chuck, the workpiece is fixed, and the die is fixed in a special shelf, and the thread of the slender piece is processed by manually rotating the shelf containing the die. This method can guarantee the processing quality, but the labor intensity is very high. Large, low processing efficiency, not suitable for mass production
To sum up, in the existing thread processing methods for slender parts, turning is difficult and prone to waste and defective products. The conventional die tapping method has high labor intensity, low production efficiency, high labor intensity, and unstable product quality.

Method used

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  • Processing method of long and thin workpiece thread and chuck fixture assembly
  • Processing method of long and thin workpiece thread and chuck fixture assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] like figure 1 , figure 2 As shown, when processing threads of slender parts with a length of more than 300 mm, the standard Morse quick release taper sleeve 1 is welded on the semi-finished flange 3, and then the end of the Morse taper sleeve 1 away from the flange is inserted into the taper hole of the lathe spindle and Fastening; Turning steps and end faces on the semi-finished flange 3 (the steps and end faces should match the end faces of the selected chuck fixtures to facilitate tight connection), used to connect the end of the chuck fixture 4 away from the jaws. There are at least two connecting bolts 2 (preferably 3) evenly distributed on the flange 3, which are used to connect and fasten the chuck fixture 4, and are easy to replace when different chuck fixtures need to be replaced according to the size of the slender piece. According to the size of the small square hole on the chuck fixture 4, it is necessary to make a matching chuck fixture key 6 and a booste...

Embodiment 2

[0042] When the thread length of the processed slender parts is less than 300 mm, and the parts that do not need to be processed are longer, the workpiece 11 can be clamped on the lathe chuck 9, and the die 10 can be clamped on the chuck clamp assembly 12. The manufacturing method of the chuck fixture assembly 12 is the same as that described in the first embodiment. This facilitates the loading and unloading of the workpiece 11, and the length range of the threads of the elongated parts is wider.

[0043]Specifically, select the die 10 that is matched with the thread of the workpiece 11 to be processed, put it into the chuck clamp assembly 12 to correct and clamp firmly, and the workpiece 11 to be processed is clamped in the lathe chuck 9, and the jaws of the lathe chuck 9 and A certain clearance is maintained in the outer diameter direction of the workpiece 11 to be processed, so that the workpiece 11 to be processed can freely move axially in the chuck 9 of the lathe. Hold...

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Abstract

The invention discloses a method for processing two long and thin workpiece threads specific to the defects of high turning difficulty and easiness in producing defective products in the conventional thread processing way of long and thin workpieces as well as the defects of high labor intensity, low production efficiency and unstable product quality in the conventional threading die tapping method. The method comprises the following steps: manufacturing a chuck fixture assembly; clamping a workpiece by using the chuck fixture assembly; clamping a threading die with a turning lathe, and processing a thread. The invention further discloses a specially-designed chuck fixture with a Mohs taper sleeve. The chuck fixture can be assembled and disassembled rapidly, and the processing accuracy and production efficiency can be increased. Compared with the conventional processing way, the method has the advantages that one-time molding automatic processing is adopted, so that the labor intensity is lowered remarkably, the production efficiency can be increased by 30-50 percent, the product quality is stable, the manufacturing accuracy is increased, and the length range of the long and thin workpiece thread is expanded.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a processing method for processing slender workpiece threads on a common horizontal lathe and a chuck fixture designed for realizing the processing method. Background technique [0002] Slender parts refer to elongated workpieces with a length-to-diameter ratio of 25:1 or more, and the difficulty of threading slender parts has always been greater. Taking the processing of triangular threads of different sizes such as M6~M30 with a length of more than 200 mm on a lathe as an example, there are three processing methods usually used. One is to clamp the workpiece on the lathe chuck, and the tailstock thimble is used to withstand it, and a 60° tool is used to clamp the workpiece. Layered turning thread, in the process of processing, due to the slender workpiece, vibration will be generated during turning, which will affect the quality of thread processing. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23G1/02B23Q3/00
Inventor 陈海平
Owner NANJING MEISHAN METALLURGY DEV
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