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Tensioning clamp of elongated shaft

A slender shaft and fixture technology, which is used in clamping, manufacturing tools, toolholder accessories, etc., can solve the problems of large surface errors, poor smoothness, and poor accuracy of workpieces

Inactive Publication Date: 2015-03-25
ZUNYI JINHUI MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for tightening the two ends of the workpiece and turning the workpiece in order to solve the shortcomings of the existing slender shafts that the middle part of the workpiece is bent, resulting in large surface errors, poor smoothness, and poor precision of the turned workpiece. Tensioning fixture for slender shafts with high workpiece surface precision and good smoothness

Method used

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  • Tensioning clamp of elongated shaft
  • Tensioning clamp of elongated shaft
  • Tensioning clamp of elongated shaft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] like figure 1 , image 3 As shown, the slender shaft tensioning fixture includes a clamping body, a tailstock main shaft 1 and an inner spacer 2. The tailstock main shaft 1 is sleeved outside the inner spacer sleeve 2 and between the inner spacer sleeve 2 and the tailstock main shaft 1 There is a bearing, the clamp body includes a mandrel 3, one end of the mandrel 3 is axially inserted into the inner spacer 2 and is threadedly connected with the inner spacer 2, and a positioning pin is used between the mandrel 3 and the inner spacer. The shaft 3 is coaxial with the tailstock main shaft 1; the other end of the mandrel 3 is axially provided with a circular truncated groove 4 for the slender shaft to be inserted into. The outer wall of the main shaft is provided with a set of shrinking grooves; the outer wall of the round table groove 4 is provided with a fixing sleeve 6, and a wedge-shaped sleeve 5 is arranged between the fixing sleeve 6 and the outer wall of the mandrel...

Embodiment 2

[0020] like figure 2 Shown: the inner hole diameter of the front end of the wedge-shaped sleeve 5 barrels in the first embodiment is larger than the rear end inner hole diameter, and the outer diameter of the front end of the wedge-shaped sleeve 5 barrels is consistent with the outer circle diameter of the rear end, and is replaced by: wedge-shaped sleeve 5 barrels The diameter of the inner hole of the front end is the same as that of the inner hole of the rear end, and the outer diameter of the front end of the wedge-shaped sleeve 5 is smaller than the outer diameter of the rear end.

[0021] The operation is the same.

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Abstract

The invention discloses a tensioning clamp of an elongated shaft. The tensioning clamp comprises a clamp body and a tailstock spindle, the clamp body comprises a mandrel, one side of the mandrel is inserted into the tailstock spindle and is in threaded connection with the same, a circular truncated cone groove allowing the elongated shaft to insert is formed in the end on the other side of the mandrel axially, a contracting groove is formed in the wall of the circular truncated cone groove, a fixing sleeve is arranged outside the circular truncated cone groove in a sleeved manner, a wedge-shaped sleeve is arranged between the fixing sleeve and the outer wall of the circular truncated cone groove, the front end of the wedge-shaped sleeve is close to one side, larger in diameter, of the circular truncated cone, the wedge-shaped sleeve is away from one side, smaller in diameter, of the circular truncated cone groove, and the inner wall of the wedge-shaped sleeve is slidably connected with the outer wall of the circular truncated cone groove while the outer wall of the same is in threaded connection with the inner wall of the fixing sleeve. The defect that the surface of a turned workpiece is large in error, poor in smoothness and low in accuracy due to the fact that the middle of the workpiece is bent during existing elongated shaft turning is overcome; by the tensioning clamp, two ends of the workpiece are tensioned, and the surface of the turned workpiece is high in accuracy and smoothness.

Description

technical field [0001] The invention belongs to the field of turning devices, in particular to a tensioning fixture for an elongated shaft. Background technique [0002] Turning is a method of cutting a workpiece on a lathe using the rotation of the workpiece relative to the tool. Turning is suitable for machining rotary surfaces. Most workpieces with rotary surfaces can be processed by turning methods, such as inner and outer cylindrical surfaces, inner and outer conical surfaces, end faces, grooves, threads, and rotary forming surfaces. The tools used are mainly turning tools. The cutting energy of turning is mainly provided by the workpiece, not by the tool. Matters needing attention in the turning process are: reasonable selection of cutting amount, reasonable selection of tools, reasonable selection of fixtures, etc. [0003] The fixture is a device used to fix the processing object in the process of machinery manufacturing, so that it occupies the correct position to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/14B23B23/00
CPCB23B23/00B23Q3/14
Inventor 杜晓龙张均榜杨代生田孟德都忠兴
Owner ZUNYI JINHUI MACHINERY MFG
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