A single and double circulation supply device for extrusion abrasive flow processing medium and its working method

Abstract

The invention discloses an extrusion abrasive flow machining medium single-double circulation supply device and a working method thereof. The device comprises a material pushing device A, a material pushing device B and a abrasive medium circulating device; the material pushing device A consists of a material cylinder A, a piston A and a piston driving mechanism A, the material pushing device B consists of a material cylinder B, a piston B and a piston driving mechanism B, and the abrasive medium circulating device comprises two three-way valves, two motors, a bend pipe A, a bend pipe B, a sealing ring and a motor controller. By additionally arranging the three-way valves, the motors and the telescopic combined bend pipes at the front end of the material cylinders, the abrasive medium supply device achieves the one-way circulation processing and two-way circulation processing functions simultaneously, and the research and development cost is greatly reduced compared with independentlyresearching and developing abrasive flow machining equipment with a single function. The piston driving devices are adopted to push the pistons to re-collect the abrasive medium in the mode of one-waycirculation, and the processing efficiency of one-way circulation is improved.

Description

technical field [0001] The invention relates to the field of fluid polishing in non-traditional finishing processing, in particular to a single-double circulation supply device for extrusion abrasive flow processing media and a working method thereof. Background technique [0002] Abrasive flow machining is a non-traditional finishing method that forces a viscoelastic abrasive medium (a flowable mixture mixed with abrasive grains) to flow under a certain pressure over the surface of the workpiece to be machined. The particles remove the rough peaks on the surface that flow through, thereby reducing the roughness of the workpiece surface. It has the advantages of good processing accessibility and controllable processing process, especially suitable for difficult to complete by traditional finishing methods (such as polishing, grinding, etc.). Deburring, polishing, and rounding of complex curved surfaces and inner cavity surfaces. [0003] Common abrasive flow processing equi...

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Problems solved by technology

[0004] Chinese patent CN1137768A provides a one-way abrasive flow processing device, which requires that the material cylinder must be placed vertically, and the abrasive medium flowing through the workpiece is returned to the material cylinder by gravity. The disadvantage is that: because the abrasive medium has a high viscosity, Relying on gravity to recollect abrasive media reduces process efficiency

[0005] Chinese patents CN101602182A, CN104526531A, CN204935404U, etc. disclose a variety of vertical bidirectional abrasive flow processing devices, and patent CN107350957A discloses a mechanical structure of a horizontal reciprocating abrasive flow polishing machine. These patents have preferably realized the bidirectional reciprocation of abrasive media circulation, but the common problem is that only two-way abrasive flow processing can be completed, and one-way circulation processing cannot be realized

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