Pneumatic positioning and clamping device for processing crankshaft connecting rod

Abstract

The invention relates to a pneumatic positioning and clamping device for processing a crankshaft connecting rod. The pneumatic positioning and clamping device comprises two eccentric clamping devices with the same structure, wherein one eccentric clamping device is arranged on a main shaft of a lathe gear box; the other eccentric clamping device is arranged on a tailstock sleeve; an air cylinder is arranged above the eccentric clamping device on the tailstock sleeve and is arranged on a tailstock through a mounting and fixing plate; a rotary positioning block is arranged on a piston rod of the air cylinder and is matched with positioning grooves in chucks; a piston sleeve is arranged on the lathe gear box; a piston rod is arranged in the piston sleeve; one end of the piston rod is connected with a positioning rod; the other end of the piston rod is matched with the positioning grooves in the chucks; and a pneumatic positioning device is arranged above the eccentric clamping device on the main shaft of the lathe gear box. According to the pneumatic positioning and clamping device disclosed by the invention, the axial and radial positioning of the connecting rod is realized by a connecting rod positioning device; and the two clamping devices are used for realizing the clamping and ensuring the eccentric distance; and the pneumatic positioning and clamping device is simple in structure and is convenient to operate, and the processing efficiency is greatly increased and the requirement on processing quality is ensured.

Description

[0001] technical field [0002] The invention belongs to a part of mechanical processing equipment, and in particular relates to a pneumatic positioning and clamping device for processing crankshaft connecting rods. Background technique [0003] In engine crankshaft machining, traditional special-purpose lathes have been used for the machining of connecting rods, which are large in size, consume a lot of energy, and have frequent failures in the hydraulic system. The quality requirements of rod shape and position, imported equipment are expensive, and for the single process of connecting rod processing, the investment is huge, and small and medium-sized enterprises cannot afford it, which will lead to loss-making operations. The crankshaft processing does not meet the actual production situation in our country. Contents of the invention [0004] The technical problem to be solved by the present invention is to overcome the above disadvantages and provide a pneumatic positi...

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Problems solved by technology

[0003] In engine crankshaft machining, traditional special-purpose lathes have been used for the machining of connecting rods, which are large in size, consume a lot of energy, and have frequent failures in the hydraulic system. The quality requirements of the rod shape and position, imported equipment are expensive, and for the single process of connecting rod processing, the investment is huge, and small and medium-sized enterprises cannot afford it, which will lead to loss-making operations. The crankshaft processing does not meet the actual production situation in our country.

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