Quick slide vise

Abstract

A fast-sliding vise, comprising: a fixed jaw (01) and a movable jaw (02) which are disposed opposite each other and which may move, and open or close in a front-back direction; a radial stop block (06) is provided on the movable jaw; the radial stop block nests on a neck of a moving rod (03); an end face clutch (07) is further provided on the moving rod, the end face clutch being able to rotate when the moving rod rotates and to slide relative to the moving rod; a rear section of the moving rod is a flat-cam rod (036); the flat-cam rod passes through a toothless groove nut (04); a fast-sliding engaging part, comprising: the moving rod having the flat-cam rod, and the toothless groove nut which corresponds to the flat-cam rod; when a non-circular cam (039) of the flat-cam rod is rotated to fit to groove teeth (042) of the toothless groove nut, the flat-cam rod cannot move axially within the toothless groove nut; when the non-circular cam of the flat-cam rod is rotated to disengage from the groove teeth of the toothless groove nut, the flat-cam rod may slide axially within the toothless groove nut. The fast-sliding vise and the fast-sliding engaging part have a long service life and are easy to manufacture at a low production cost.

Description

technical field [0001] The present invention relates to a quick-slide vise for mechanically clamping workpieces. Background technique [0002] Clamping mechanisms such as ordinary vices and flat pliers usually include movable jaws and fixed jaws. Nuts are set on the fixed jaws, and screws that cooperate with the nuts are set on the movable jaws. The movable jaws are pushed forward or backward by the rotation of the screws. This structure The clamping device needs to rotate more circles to reach the clamping position when the working stroke is large, so the operation time is long and the operation efficiency is low. In order to overcome the defects of the common clamping structure, the patent CN102699839A discloses a clamping mechanism that can advance and retreat quickly. The flat screw neck 034 at the back section rotates forward by 90° and engages with the missing tooth nut 04. When the limit block 032 is limited, the moving rod 03 stops rotating. At this time, continue t...

AI Technical Summary

Problems solved by technology

[0003] 1. When the flat screw 034 is engaged with the missing tooth nut 04, the incomplete threads of the two have sharp angles to engage, so the sharp corners are difficult to engage and are easily damaged; 2. When the flat screw 034 is engaged with the missing tooth nut 04, Because the two have a thread lead angle, relative axial movement will occur when they are engaged. This movement needs to be compensated by the mechanism, which makes the structure of the mechanism complex and the clamping rigidity decreased; 3. The rotation positioning of the moving rod 03 is determined by the limit block of 032 Realized, when the limit block 032 is under force, there will be an additional radial force on the moving rod 03, which will drive the moving rod 03 to deviate from its own centerline, affecting the realization of the action; 4. Because the toothless nut 04 and the rear section of the flat screw 034 are not complete Thread, when the two are loose, the occlusal surface of the thread is from large to small, and the incomplete thread is separated under load, and there will be a setback at the moment of separation, which is easy to damage the thread and cause the action to fail.

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