Air compressor crank double-end synchronous positioning and clamping device

Abstract

The invention provides an air compressor crank double-end synchronous positioning and clamping device. The device comprises a clamping mechanism and a positioning mechanism which are oppositely arranged, the clamping mechanism and the positioning mechanism comprise moving assemblies driven by oil pressure, a clamping jaw assembly is fixedly connected to the moving assembly of the clamping mechanism, an ejector pin is arranged on the moving assembly of the positioning mechanism, the clamping mechanism and the positioning mechanism are driven synchronously, the two ends of a workpiece can be positioned through the positioning mechanism and the clamping mechanism which are arranged respectively, meanwhile, oil can be fed synchronously to drive and adjust the position, it is guaranteed that the two ends act synchronously, in addition, the clamping mechanism is pushed through oil feeding in the middle, and compared with traditional end pushing, the adjusting stroke is greatly increased; andthe device can be used for larger workpieces, the size of the device is kept small, so that the device is suitable for small machine tools.

Description

technical field [0001] The invention relates to the field of machining equipment, in particular to a dual-head synchronous positioning and clamping device for an air compressor crank. Background technique [0002] The crankshaft is subjected to the joint action of the centrifugal force of the rotating mass, the periodically changing gas inertial force and the reciprocating inertial force, so that the crankshaft is subjected to the bending torsional load. [0003] Machining in the prior art is usually a cylindrical milling cutter to process workpieces, but when machining eccentric parts, it can only process a certain center position. When processing multiple eccentric workpieces, it needs to be continuously disassembly and assembly of the parts to be processed, but during the continuous disassembly and assembly process, the position of the parts will change uncontrollably, which will eventually lead to low processing accuracy of the parts and cannot meet the processing requir...

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Problems solved by technology

[0003] Machining in the prior art is usually a cylindrical milling cutter to process workpieces, but when machining eccentric parts, it can only process a certain center position. When processing multiple eccentric workpieces, it needs to be continuously disassembly and assembly of the parts to be processed, but during the continuous disassembly and assembly process, the position of the parts will change uncontrollably, which will eventually lead to low processing accuracy of the parts and cannot meet the processing requirements. The applicant first applied for a crankshaft automatic The eccentric processing device, the publication number is: CN210099538U, the disclosed method is to push the mechanism of the fixed crank through three pushing mechanisms, that is, through the form of an oil cylinder, so as to realize the continuous change of the position in the processing process, but due to the setting of the drawing plate , and the oil cylinder, so that the diameter and length of the entire device are very large. When the applicant targets some small machine tools in the later stage, it is difficult to install and implement. Therefore, it is a big deal to miniaturize the volume of the entire device and ensure its adjustability. In addition, especially for larger crankshafts, the positioning of the crankshaft needs to be positioned at both ends at the same time. In actual use, the position adjustments at both ends are difficult to synchronize

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