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CN-120421926-B - Processing method of crankcase of electric air compressor

CN120421926BCN 120421926 BCN120421926 BCN 120421926BCN-120421926-B

Abstract

The invention discloses a processing method of a crankcase of an electric air compressor, which comprises the following processing steps of S1, material preparation, S2, blank forming, S3, rough processing and finish processing, S4, heat treatment and surface strengthening, S5, quality detection, namely detecting the tightness and flatness of the inner wall of a cylinder body of the crankcase body in the step S4 through detection equipment, screening out unqualified products, wherein the detection equipment in the step comprises a mounting seat, a plugging mechanism and an air cylinder detection mechanism, the plugging mechanism is mounted on a mounting frame, and the air cylinder detection mechanism is mounted on the mounting frame. The invention produces the high-quality crankcase box body through the processing technology, detects the produced crankcase box body, seals the mounting hole except the cylinder body on the crankcase box body through the sealing mechanism, is convenient for detecting the sealing performance of the cylinder body, and detects the sealing performance and the flatness of the inner wall of the cylinder body through the cylinder detection mechanism.

Inventors

  • ZHANG WENGANG
  • ZHENG ZIHAO
  • YAN JIANYU
  • LIN YONGZHEN

Assignees

  • 宁波合力制动系统有限公司

Dates

Publication Date
20260512
Application Date
20250604

Claims (5)

  1. 1. The processing method of the crankcase of the electric air compressor is characterized by comprising the following processing steps: s1, preparing a material, namely selecting an aluminum alloy raw material as a processing raw material; S2, blank forming, namely adopting extrusion forming equipment to extrude and form raw materials to prepare a crankcase box body (1); S3, rough machining and finish machining, namely, machining a reference surface of the crankcase body (1), tapping a mounting hole, and boring a bearing hole and a cylinder mounting surface; S4, heat treatment and surface strengthening, namely performing heat treatment and surface treatment on the crankcase body (1) in the step S3; s5, quality detection, namely detecting the tightness and flatness of the inner wall of the cylinder body (3) of the crankcase box body (1) in the step S4 through detection equipment, and screening out unqualified products; The detection equipment in the step comprises a mounting seat (4), a plugging mechanism (6) and a cylinder detection mechanism (9), wherein the mounting seat (4) is provided with a mounting frame (2), and the plugging mechanism (6) is arranged on the mounting frame (2) and corresponds to a mounting hole site on the crankcase box body (1), and the cylinder detection mechanism (9) is arranged on the mounting frame (2) and corresponds to a cylinder body (3) on the crankcase box body (1); The cylinder detection mechanism (9) comprises a detection cylinder (14) installed on the crankcase box (1), an outer piston stop rod (15) spliced with the inner cavity of the detection cylinder (14), and an inner detection rod (17) vertically spliced with the middle part of the outer piston stop rod (15), wherein the detection cylinder (14) is provided with a detection air pipe (10), the bottom outer ring of the outer piston stop rod (15) is abutted with the outer end of the plugging mechanism (6) on the crankcase box (1), the lower end of the inner detection rod (17) extends into the cylinder body (3), the bottom of the inner detection rod (17) is provided with a detection head (18), the outer ring of the detection head (18) is abutted with the outer ring of the cylinder body (3), and the outer piston stop rod (15) is provided with a distance sensor (21) corresponding to the top of the inner detection rod (17); The detecting head (18) comprises a detecting chamber (23) communicated with the end part of an inner detecting rod (17), blocking flaps (24) fixed on the upper part and the lower part of the outer ring of the detecting chamber (23), and an elastic membrane (25) encircling the outer ring of the detecting chamber (23), wherein the upper end of the elastic membrane (25) is connected with the blocking flaps (24) positioned on the upper part of the detecting chamber (23), the lower end of the elastic membrane (25) is connected with the blocking flaps (24) positioned on the lower part of the detecting chamber (23), a plurality of adjusting pistons (26) are inserted into the outer layer of the detecting chamber (23), the outer ends of the adjusting pistons (26) are connected with the inner wall of the elastic membrane (25), a solenoid valve II (19) is arranged on the upper part of the inner cavity of the outer piston stop lever (15), a solenoid valve III (22) is arranged in the inner cavity of the inner detecting rod (17), a pneumatic sensor I (16) is arranged in the inner cavity of the detecting chamber (23), and an air pump is externally connected with the detecting cylinder (14); Still be provided with on mount pad (4) and detect intelligent controller (5), detect intelligent controller (5) and be provided with shutoff module, detection module and early warning module on, shutoff module respectively with detection module, air pump, solenoid valve two (19) and solenoid valve three (22) signal connection, detection module respectively with early warning module, distance sensor (21), solenoid valve three (22) and air pressure sensor one (16) signal connection, reset spring is installed to the inner chamber of detecting section of thick bamboo (14), reset spring's bottom and the top looks butt of outer piston pin (15), the guide bar that peg graft with outer piston pin (15) top is installed to the inner chamber of detecting section of thick bamboo (14), electromagnet (20) corresponding with the guide bar are installed at the top of outer piston pin (15), the guide bar is ferromagnetic metal material, shutoff module and electromagnet (20) signal connection.
  2. 2. The method for processing the crankcase of the electric air compressor according to claim 1, wherein the sealing flap (24) is made of elastic rubber, the elastic membrane (25) is made of elastic plastic, and the end part of the elastic membrane (25) is connected with the middle part of the sealing flap (24).
  3. 3. The processing method of the crankcase of the electric air compressor according to claim 1, wherein the plugging mechanism (6) comprises a plugging cylinder (11) installed with the installation frame (2), and a plugging piston rod (12) plugged with the inner cavity of the plugging cylinder (11), the front end of the plugging piston rod (12) corresponds to an installation hole site on the crankcase body (1), and a plurality of plugging cylinders (11) are connected in series through a plugging air pipe (7).
  4. 4. A method for processing a crankcase of an electric air compressor according to claim 3, wherein the input end of the plugging air pipe (7) is connected with the output end of the air pump, the plugging air pipe (7) is internally provided with a second air pressure sensor (13), and the plugging module is respectively connected with the first electromagnetic valve (8) and the second air pressure sensor (13) in a signal manner.
  5. 5. A method of machining a crankcase for an electric air compressor according to claim 1, wherein the sensing chamber (23) is of disc-shaped construction.

Description

Processing method of crankcase of electric air compressor Technical Field The invention relates to the technical field of crankcase production, in particular to a processing method of an electric air compressor crankcase. Background An electric air compressor is a device for compressing a gas. Most air compressors are of the reciprocating piston type, rotary vane or rotary screw type, wherein in operation of the piston type air compressor, a crankshaft rotates in a crankcase, and the rotating crankshaft drives a piston to move up and down in a piston cylinder on the crankcase, with the up and down moving piston repeatedly compressing air. In the prior art, china patent with publication number CN101737303A discloses an air compressor crankcase design, which comprises a motor stator, a motor rotor, a crankcase and a cylinder, wherein the motor stator and the cylinder are fixedly connected with the crankcase, a crankshaft is driven to rotate in the crankcase mainly through the motor rotor, and a piston is driven to move up and down in the cylinder on the crankcase in the crankshaft rotation process, so that the inner wall of the cylinder in the crankcase needs to be kept smooth to ensure the smooth movement of the piston in the cylinder in the crankcase, the existing crankcase processing technology is usually implemented by casting technology or forging technology, and the crankcase is processed and produced by utilizing a mechanical processing mode to process the cylinder in the crankcase. Disclosure of Invention In view of the foregoing, it is desirable to provide a method of machining a crankcase of an electric air compressor. In order to achieve the above purpose, the present invention adopts the following technical scheme: A processing method of an electric air compressor crankcase comprises the following processing steps: s1, preparing a material, namely selecting an aluminum alloy raw material as a processing raw material; S2, blank forming, namely adopting extrusion forming equipment to extrude and form raw materials to prepare a crankcase box body; S3, rough machining and finish machining, namely, machining a reference surface of the crankcase body, tapping a mounting hole, and boring a bearing seat hole and a cylinder mounting surface; s4, heat treatment and surface strengthening, namely performing heat treatment and surface treatment on the crankcase body in the step S3; S5, quality detection, namely detecting the tightness and flatness of the inner wall of the cylinder body of the crankcase body in the step S4 through detection equipment, and screening out unqualified products; The detection equipment in the steps comprises a mounting seat, a plugging mechanism and a cylinder detection mechanism, wherein a mounting frame is mounted on the mounting seat, the plugging mechanism is mounted on the mounting frame and corresponds to a mounting hole site on a crankcase body, and the cylinder detection mechanism is mounted on the mounting frame and corresponds to a cylinder body on the crankcase body. As a preferred embodiment of the processing method of the crankcase of the electric air compressor, the invention provides that the cylinder detection mechanism comprises a detection cylinder installed with a crankcase body, an outer piston stop lever spliced with the inner cavity of the detection cylinder, and an inner detection lever vertically spliced with the middle part of the outer piston stop lever, wherein the detection cylinder is provided with a detection air pipe, the bottom outer ring of the outer piston stop lever is abutted with the outer end of a plugging mechanism on the crankcase body, the lower end of the inner detection lever extends into a cylinder body, the bottom of the inner detection lever is provided with a detection head, the outer ring of the detection head is abutted with the outer ring of the cylinder body, the outer piston stop lever is provided with a distance sensor corresponding to the top of the inner detection lever, high-pressure air is flushed into the inner cavity of the detection cylinder through the detection air pipe, so that the outer piston stop lever is pushed down and plugs the installation hole of the cylinder body, the inner detection rod is driven to slide along the inner wall of the cylinder body at the moment by controlling the air pressure of the inner cavity of the detection cylinder to increase or decrease, and the displacement distance of the inner detection rod is detected in real time by the distance sensor, when the flatness of the inner wall of the cylinder body is higher, the distance sensor can detect uniform displacement of the inner detection rod at the moment, and when the uniformity of the detection head is lower, the detection head can bear certain resistance when moving along the inner wall of the cylinder body, and the distance sensor detects that the inner detection rod does not have uniform displacement, therefore, the flatness of the inner