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Spring pre-tightening type hydraulic floating tailstock

A spring seat, preloading technology, applied in the direction of tailstock/top, turning equipment, tool holder accessories, etc., can solve problems such as affecting machining accuracy, workpiece bending, and inability to self-adjust, to improve quality, eliminate The effect of deformation and bending of the workpiece to ensure the machining accuracy

Inactive Publication Date: 2011-04-20
大连机床(数控)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tailstock of this structure is rigidly supported. During the processing, the long-axis workpiece will elongate to a certain extent due to heat, and cannot be adjusted by itself. At this time, the workpiece will bend to a certain extent, which will affect the machining accuracy.

Method used

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  • Spring pre-tightening type hydraulic floating tailstock
  • Spring pre-tightening type hydraulic floating tailstock

Examples

Experimental program
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Effect test

Embodiment Construction

[0007] Such as figure 1 Shown: 1 is tailstock body, and sleeve 2 is equipped with in the inboard of tailstock body 1, and top mechanism 18 is equipped with in the front part of sleeve 2 inner sides. The rear end of the tailstock body 1 is fixed with an oil cylinder 8 by bolts, the inner cavity of the oil cylinder 8 is equipped with a piston 10, the front part of the piston 10 forms a front oil chamber 7 and communicates with the front oil port 15 on the oil cylinder 8, the piston 10 The rear oil cavity 11 is formed and communicated with the rear oil port 14 on the oil cylinder 8 . The rear end of the sleeve 2 is fixedly connected with a rear cover 4 by bolts, and a pull rod 9 is arranged in the center hole of the piston 10. The front end of the pull rod 9 extends out of the piston 10 and is processed with bosses and threads, and is fastened by the rear cover. The nut 3 and the boss clamp the back cover 4. The front portion of the piston 10 protrudes out of the oil cylinder 8...

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Abstract

The present invention provides a spring pre-tightening type hydraulic floating tailstock which comprises: a tailstock body with a sleeve disposed inside, a core clamper mechanism mounted on the front of the sleeve inner side, an oil cylinder connected on the rear end of the tailstock body, a rear cover fixedly connected with the tailstock inner side at the rear end of the sleeve, a piston with a center aperture, and a pull bar disposed in the center aperture. The front end of the pull bar is fixedly connected with the rear cover; the front end of the piston is protruded through the oil cylinder to the outside and is suited with a spring seat which lies on the step of the piston; between the spring seat and the bonnet, springs are provided and leaves spring seat gap; between the front end face of the piston and the boss of the pull bar, a piston gap is kept; the rear end of the pull bar is protruded through the center aperture of the piston and is in thread connection with double fastening nuts. The invention can prevent a heated workpiece from buckling distortion, therefore guarantees processing precision and raises workpiece quality.

Description

technical field [0001] The invention relates to a tailstock, in particular to a spring-pretensioned hydraulic floating tailstock, which is used for jacking up long-axis workpieces. Background technique [0002] When metal cutting machine tools process long-axis workpieces, they must use a tailstock with a top mechanism. One end of the workpiece is clamped by the chuck, and the other end is held by the top at the center of the end face. The commonly used tailstock structure has a tailstock body, a sleeve is arranged in the tailstock body, a top mechanism is installed on the inside front of the sleeve, an oil cylinder is connected to the rear end of the tailstock body, and a tailstock is located at the rear end of the sleeve. The inner side of the body is fixedly connected with a back cover, and the back cover is connected with the outer end of the piston rod matched with the oil cylinder. The action of the oil cylinder can drive the back cover and the sleeve to slide in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B23/00
Inventor 徐亚明程蓓蓓王微刘洋段桂俊
Owner 大连机床(数控)股份有限公司
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