External thread secondary fitting fixture and clamping method

An external thread and fixture technology, which is applied to the field of secondary repairing fixtures and clamping for external threads, can solve the problems that the starting angle of the workpiece thread cannot be accurately restored, and the secondary repairing cannot be realized, and the effect of the accurate clamping method can be achieved.

Inactive Publication Date: 2016-03-16
HARBIN ELECTRIC MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the workpiece leaves the lathe, when it is clamped again, it will not be possible to accurately restore the starting angle of the workpiece threading, and it is impossible to achieve secondary repairs

Method used

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  • External thread secondary fitting fixture and clamping method
  • External thread secondary fitting fixture and clamping method

Examples

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Effect test

Embodiment Construction

[0015] 1) if figure 1 As shown, a dial fixture 1 is designed and manufactured. The inner diameter of the dial fixture 1 is larger than the outer diameter of the fixed position of the workpiece 4, and four clamping bolts 2 are uniformly distributed in the circumferential direction of the fixture, and has a U-shaped groove 3 whose width is larger than the claw 5 of the lying car.

[0016] 2) Set the dial tool 1 on the workpiece 4, and tighten the four jacking bolts 2 to fix the dial tool 1 on the workpiece 4.

[0017] 3) As attached figure 2 As shown, the workpiece 4 on which the dial tool 1 is installed is placed on the centerline of rotation of the sleeper chuck 8, and the end of the workpiece 4 that needs to be threaded faces the end of the bed. Align the top 6 at the head of the bed and the top 7 at the end of the bed to the center holes on both ends of the workpiece 4, adjust the position of the top 7 at the end of the bed to fix the workpiece 4 on the sleeping car. Rot...

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PUM

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Abstract

The invention provides a fixture for repeatedly turning and repairing an external thread by using a horizontal lathe simply, safely and precisely and a clamping method thereof. A poking disc fixture consists of four ejecting bolts and a U-shaped groove; a poking disc tool is fixed on a workpiece through the four ejecting bolts; the workpiece is supported by lathe head and lathe tail tips in the workpiece clamping; and the poking disc tool is connected to one clamping jaw of the lathe for transferring a torque through the U-shaped groove. After a thread of the workpiece is roughly machined, a horizontal turning chuck is locked to link with a tool post; and the workpiece and the poking disc fixture are dismounted from equipment for premounting. When the workpiece is horizontally turned again, the workpiece is also fixed by the horizontal turning lathe head and lathe tail tips; and the clamping jaw used in the first clamping process is adjusted to enter the U-shaped groove of the poking disc tool to finish the second clamping process; and the second fitting of the thread can be directly performed without alignment for a workpiece thread machining initial angle after clamping.

Description

Technical field: [0001] The invention relates to a fixture and a clamping method for repeatedly turning and repairing external threads by using a horizontal lathe Background technique: [0002] AP1000 turbogenerator rotor conduction screw is designed with a non-standard modified Whitworth spinal canal thread. Because there is no datum measuring tool for the spinal canal thread, it needs to be roughed first, and then pre-installed with the internal thread of the conductive rod spinal canal, and the external thread of the spinal canal of the conductive screw is repaired twice according to the pre-installation results to achieve The screw-in depth required by the drawing. Under the premise that the workpiece is not released and clamped, the horizontal lathe can perform secondary repairs on the thread by locking the tool holder and the chuck in linkage. Once the workpiece leaves the lathe, when it is clamped again, it will not be able to accurately restore the starting angle o...

Claims

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Application Information

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IPC IPC(8): B23Q3/12
CPCB23Q3/12
Inventor 贺云龙王力强刘瑜温海明耿亮
Owner HARBIN ELECTRIC MASCH CO LTD
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