Automatic chuck for small hardware grinding machine

Abstract

The invention discloses an automatic chuck for a small hardware grinding machine. The automatic chuck for the small hardware grinding machine comprises a support frame; the support frame is connectedwith a middle swing cylinder by a copper sleeve; an extension shaft of the middle swing cylinder is connected with an extension rod; a mounting frame is arranged on the outer side of the extension rod; the end part of the extension rod is in threaded connection with a rod head; multiple mounting steps are uniformly distributed on the outer side of the rod head; the outer sides of all the mountingsteps are rotationally connected with first connecting rods; the end parts of the first connecting rods are connected with second connecting rods by pin shafts; the end parts of the second connectingrods are connected with clamping plates; the other ends of the clamping plates are rotationally connected to the mounting frame; butterfly springs, positioned between the first connecting rods and thesecond connecting rods, are arranged at the middle parts of the pin shafts; and electromagnets, fixed on the outer sides of the first connecting rods and the second connecting rods, are arranged at the two ends of the pin shafts. The automatic chuck for the small hardware grinding machine has the characteristics of wide application range, high positioning precision and good clamping stability.

Description

technical field [0001] The invention relates to an automatic chuck for a grinding machine, in particular to an automatic chuck for a small hardware grinding machine. Background technique [0002] The function of the small hardware grinding machine is to clamp and fix the small workpiece, and then grind the surface or sharp corners of the workpiece through the grinding head, so as to complete the shape of the small workpiece and make the grinding surface have a high degree of smoothness. However, because the current grinding machine generally uses a three-jaw chuck to fix the workpiece, the grinding machine cannot fix some workpieces with unconventional shapes, and it will also cause asymmetrical parts such as oval parts and eccentric tubes when fixing The three jaws of the chuck cannot form a tight fit on the workpiece at the same time, thereby reducing the clamping stability of the grinding machine to the workpiece. In addition, because the conventional grinding machine ca...

AI Technical Summary

Problems solved by technology

However, because the current grinding machine generally uses a three-jaw chuck to fix the workpiece, the grinding machine cannot fix some workpieces with unconventional shapes, and it will also cause asymmetrical parts such as oval parts and eccentric tubes when fixing The three jaws of the chuck cannot form a tight fit on the workpiece at the same time, thus reducing the clamping stability of the grinding machine to the workpiece

In addition, because the conventional grinding machine cannot rotate and tilt the workpiece after clamping, the grinding machine needs to repeatedly position the workpiece during the multiple grinding process of a workpiece. When the workpiece needs to be ground in an inclined position It can only be done by changing the clamping position of the workpiece. This positioning and adjustment method will not only reduce the accuracy of the workpiece after grinding, but also reduce the clamping stability of the grinding machine by tilting the clamping, so that the workpiece will In the process, there will be force deviation or drop, which is poor in safety

Therefore, the clamping method of the existing grinding machine to the workpiece has the problems of small application range, low positioning accuracy, and poor clamping stability

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