Lathe and method for processing external thread of screw

A processing method and external thread technology, which is applied in the field of lathes, can solve problems such as hindering elongation, large thermal deformation elongation, and affecting processing quality, so as to avoid processing errors and ensure the accuracy of external threads.

Inactive Publication Date: 2012-06-13
PANZHIHUA GANGCHENG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There is a problem with this processing method: the longer the length of the screw, the larger the aspect ratio, the worse the clamping rigidity, and it is easy to bend under the action of the cutting force F. At the same time, due to the long length of the rod, the thermal The deformation elongation is large, and the o

Method used

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  • Lathe and method for processing external thread of screw
  • Lathe and method for processing external thread of screw
  • Lathe and method for processing external thread of screw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Utilize the ordinary lathe to process the external thread of the slender screw, adopt the following steps:

[0028] A. Select the external thread die 1 that matches the external thread to be processed on the workpiece 2, and install the external thread die 1 coaxially on the chuck 4. The external thread die 1 is an ordinary hand twisted external thread die. Can;

[0029] B. Install the workpiece 2 between the external thread die 1 and the tailstock 3 and ensure that the three are coaxial. The tailstock 3 can use an ordinary center frame. After the workpiece 2 is installed, the center frame is not fixed on the guide rail. It is necessary to ensure the state of axial movement;

[0030] C. Turn on the lathe to make the chuck 4 drive the externally threaded die 1 to rotate, so that the externally threaded die 1 can process the external thread on the workpiece 2, and pour cooling liquid on the processing part of the workpiece 2 in time during processing;

[0031] D. After ...

Embodiment 2

[0034] Use the following steps to process the external thread of a slender screw:

[0035] A. Select the external thread die 1 that matches the external thread to be processed on the workpiece 2, and install the external thread die 1 coaxially on the chuck 4. The external thread die 1 is an ordinary hand twisted external thread die. Can;

[0036] B. Install the workpiece 2 between the external thread die 1 and the tailstock 3 and ensure that the three are coaxial. The tailstock 3 adopts a special tailstock 3, and its lower part has a chute and a positioning bolt installed on the guide rail of the machine base 1. The upper part has an inner hexagonal through hole, and the workpiece 2 is directly inserted into the inner hexagonal through hole on the tailstock 3;

[0037] C. Turn on the lathe so that the chuck 4 drives the externally threaded die 1 to rotate, so that the externally threaded die 1 processes the external thread on the workpiece 2, and pours cooling liquid on the p...

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PUM

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Abstract

The invention discloses a lathe for processing an external thread of a screw which can avoid that the screw is bent when being processed. The lathe for processing the external thread of the screw provided by the invention comprises a lathe base, a chuck and a tail bed which are arranged on the lathe base as well as an external thread cutting die, wherein the external thread cutting die is clamped onto the chunk and is coaxial with a workpiece, the clamping part of the tail bed is provided with a standstill locking structure, and the workpiece is arranged on the tail bed and can axially move relative to a shaft of the lathe base. The external thread cutting die is used for processing the screw, thus the workpiece only receives torque and no radial force during processing, no bending moment capable of causing the screw to be bent is produced, cutter relieving phenomenon on the workpiece can not be produced, and external thread accuracy of a finished product screw is guaranteed.

Description

technical field [0001] The invention relates to a lathe, in particular to a lathe for machining external threads of a screw rod. In addition, the present invention also relates to a processing method, especially a method for processing the external thread of a screw rod. Background technique [0002] Usually, the external thread of a slender threaded rod is processed by a common lathe, such as figure 1 The method shown: Fix the rod to be processed between the chuck and the top, and complete the processing of the external thread of the screw through the rotation of the workpiece and the action of the thread milling cutter. [0003] There is a problem with this processing method: the longer the length of the screw, the larger the aspect ratio, the worse the clamping rigidity, and it is easy to bend under the action of the cutting force F. At the same time, due to the long length of the rod, the thermal The deformation elongation is large, and the ordinary rear tip fixation w...

Claims

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Application Information

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IPC IPC(8): B23G1/00B23Q3/00
Inventor 杨天刚严家强宋东平
Owner PANZHIHUA GANGCHENG GROUP
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