A device for polishing the circular arc surface of connecting rod

Abstract

The invention provides a device for polishing the circular arc surface of a connecting rod, which includes a base, on which a workpiece fixing unit and a load-bearing frame are arranged, and a lifting unit is arranged on the load-bearing frame; the polishing belt operation unit is arranged on the fixed rod of the polishing mechanism Below, including the motor arranged under the inner section of the fixed rod of the polishing mechanism; the hinge release unit is arranged in the middle of the fixed rod of the polishing mechanism, including the hinge release cylinder arranged above the polishing belt elastic cylinder; the piston rod of the hinge release cylinder A hinged loose clip connecting seat is arranged below, a rotatable flap is arranged at the front end of the hinged loose clip connected seat, and a hinge clamp arm is arranged below the flap. The device provided by the invention can realize the polishing of the outer surface of the connecting rod arc with an included angle of about 200°, and the device has simple structure, fast clamping, convenient use, high processing efficiency, high polishing precision, time-saving and labor-saving, and a wide range of applications. It can realize the polishing of wide arc surface.

Description

technical field [0001] The invention relates to a device for polishing the circular arc surface of a connecting rod, which belongs to the technical field of mechanical processing. Background technique [0002] The connecting rod is a part that connects the piston and the crankshaft. Its function is to convert the reciprocating motion of the piston into the rotational motion of the crankshaft, and transmit the force acting on the piston to the crankshaft to output power. The stress situation of the connecting rod in the work is relatively complicated, which is not only affected by the alternating tensile stress and compressive stress, but also subjected to the bending stress. Because of the complex stress situation of the connecting rod, there are strict requirements for the accuracy of the connecting rod shape. [0003] The roundness and roughness of the outer surface of the arc at the big end of the connecting rod are very high. For a connecting rod currently produced by o...

AI Technical Summary

Problems solved by technology

The existing polishing method is to add fixtures on the milling machine, clamp the connecting rod on the milling machine, and perform polishing by rotating the workpiece of the connecting rod. Because the product itself is relatively heavy, and the rotation and polishing are controlled manually, the operation is time-consuming Laborious, and the polishing accuracy is difficult to guarantee

Moreover, the surface to be polished of this special connecting rod workpiece is not a complete cylindrical surface, but an arc surface with an included angle of about 200°. Since the included angle exceeds 180°, some of the arc surface to be polished is located at the big end of the connecting rod. Below the center line, it is more difficult to grind and polish

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