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CN-121989114-A - Hole grinding device

CN121989114ACN 121989114 ACN121989114 ACN 121989114ACN-121989114-A

Abstract

The application discloses an inner hole polishing device, which relates to the field of machining and comprises a lathe bed and a first eccentric component, wherein the second eccentric component comprises a driving part, a rotating part and a lifting part, the lifting part is arranged on the side surface of the lathe bed, the driving part is arranged on the lifting part, the rotating part is arranged on the output end of the driving part, the first eccentric component and the second eccentric component are in transmission connection through a connecting rod mechanism, an adjusting component for coordinating the distance between the first eccentric component and the second eccentric component is arranged on the end surface of the lathe bed, and a polishing component is arranged on the rotating part and used for polishing and polishing a part of a cross inner hole, wherein the polishing component comprises an expanding part and a linkage part, the linkage part is arranged on the first rotating part, and the expanding part is arranged at one end of the linkage part far away from the rotating part. The application can effectively polish the cross inner hole of the part, can intensify the discharge of scraps during polishing through the movement of the first eccentric assembly, and simultaneously adjusts the distance between the first eccentric assembly and the second eccentric assembly so as to adapt to the technical effects of different working conditions.

Inventors

  • WEI JUE
  • ZHU XINAI
  • XUE FEI
  • ZHOU YUQI
  • Fang Peixi

Assignees

  • 上海建设管理职业技术学院
  • 上海徕木电子股份有限公司
  • 上汽大众汽车有限公司

Dates

Publication Date
20260508
Application Date
20260107

Claims (10)

  1. 1. An inner hole grinding device, comprising: A bed body (1), The first eccentric component (2) is arranged on one side surface of the lathe bed (1) and is used for driving the whole structure to move up and down so as to exacerbate polishing and discharge scraps; The second eccentric assembly (3) is arranged on the other side surface of the lathe bed (1) and is used for polishing a cross inner hole of a part, the second eccentric assembly (3) comprises a driving part (31), a rotating part (32) and a lifting part (33), the lifting part (33) is arranged on the side surface of the lathe bed (1), the driving part (31) is arranged on the lifting part (33), and the rotating part (32) is arranged on the output end of the driving part (31); The first eccentric component (2) and the second eccentric component (3) are in transmission connection through a connecting rod mechanism (4), and an adjusting component (5) for coordinating the distance between the first eccentric component (2) and the second eccentric component (3) is arranged on the end face of the lathe bed (1); A grinding assembly (6) mounted on the rotating part (32) for grinding and polishing the parts of the cross inner hole; The polishing assembly (6) comprises an expanding portion (61) and a linkage portion (62), the linkage portion (62) is mounted on the first rotating portion (32), and the expanding portion (61) is mounted at one end, far away from the rotating portion (32), of the linkage portion (62).
  2. 2. An inner hole polishing device as set forth in claim 1, wherein the first eccentric assembly (2) comprises an eccentric motor (21) and an eccentric structure (22), the eccentric motor (21) is mounted on the side surface of the lathe bed (1), the eccentric structure (22) is mounted on the output end of the eccentric motor (21), and the eccentric structure (22) is connected with a connecting rod structure.
  3. 3. An inner hole polishing device according to claim 2, wherein the lifting part (33) comprises an angle iron (331) arranged at the bottom of the lathe bed (1), an upper moving block (332) arranged on the angle iron (331), and a lower moving block (333) which is in sliding fit with the upper moving block (332), and the lower moving block (333) is connected with the link mechanism (4).
  4. 4. An inner hole polishing device according to claim 1, wherein the driving part (31) comprises a polishing head expansion motor (311) mounted on a lower moving block (333), an upper synchronous pulley (312) mounted on the output end of the polishing head expansion motor (311), and a lower synchronous pulley (313) mounted on the rotating part (32), and the upper synchronous pulley (312) and the lower synchronous pulley (313) are in transmission connection through a toothed belt (314).
  5. 5. The inner hole polishing device as set forth in claim 4, wherein the rotating portion (32) comprises a transmission shaft (321) mounted on the lower synchronous pulley (313), an eccentric shaft disc (322) mounted on the transmission shaft (321), an I-shaped block (323) sleeved on the eccentric shaft disc (322), an expansion head retainer (324) mounted on the lower moving block (333) and an expansion sliding block (325) mounted in the expansion head retainer (324), the expansion sliding block (325) located in the expansion head retainer (324) forms an arc groove (3231), a flange (3232) is formed on the edge of the I-shaped block (323) and is in sliding fit with the arc groove (3231), and the shape specification of the flange (3232) is matched with that of the arc groove (3231).
  6. 6. The hole polishing device as set forth in claim 1, wherein the linkage part (62) comprises an expansion connecting rod (621) mounted on the expansion sliding block (325), a guide cylinder bar (622) mounted on one end of the expansion connecting rod (621) far away from the expansion sliding block (325), an upper sleeve (623) mounted on the guide cylinder bar (622) and a lower stop sleeve (624) mounted on the bottom of the upper sleeve (623), the expansion connecting rod (621) and the expansion head retainer (324) are in sliding fit, the cylinder bars are uniformly distributed on the lower stop sleeve (624), the upper sleeve (623) is of a shell structure, and the lower stop table is of a table structure.
  7. 7. An inner hole polishing device according to claim 3, wherein the connecting rod mechanism (4) comprises a linkage rod (41) arranged on the eccentric wheel structure (22), a lever (42) arranged at one end of the linkage rod (41) far away from the eccentric wheel structure (22) and a large connecting rod (43) arranged at one end of the lever (42) far away from the linkage rod (41), one end of the large connecting rod (43) far away from the lever (42) is hinged and matched with the upper moving block (332), and the linkage rod (41) and the lever (42) are coaxially connected.
  8. 8. The inner hole polishing device as set forth in claim 7, wherein the end face of the lathe bed (1) is provided with a groove (7), the adjusting assembly (5) comprises a lever adjusting screw rod (51) rotatably arranged in the groove (7), a lever adjusting slide block (52) slidably arranged in the groove (7) and a lever fulcrum block (53) arranged on the lever adjusting slide block (52), the lever adjusting slide block (52) is in threaded fit with the lever adjusting screw rod (51), and the lever fulcrum block (53) slides in a hollow groove (54) formed in the lever (42).
  9. 9. The inner hole polishing device as set forth in claim 7, wherein the eccentric wheel structure (22) comprises a circular frame (221) mounted on the output end of the eccentric wheel motor (21), an annular groove (222) is formed in the circular frame (221), the linkage rod (41) swings back and forth in the annular groove (222), a small connecting rod (223) is coaxially connected to one side, away from the linkage rod (41), of the lever (42), and one end, away from the lever (42), of the small connecting rod (223) is connected with the lathe bed (1) through a pin shaft.
  10. 10. The inner hole polishing device as set forth in claim 1, wherein the expanding portion (61) comprises an expanding mechanism connecting rod (611) movably connected to the guiding cylindrical bar (622) and polishing blocks (612) mounted on one end of the expanding mechanism connecting rod (611) far away from the guiding cylindrical bar (622), and the sections of the polishing blocks (612) are trapezoid or triangular and are uniformly distributed.

Description

Hole grinding device Technical Field The application relates to the technical field of machining, in particular to an inner hole polishing device. Background In the fields of machine manufacturing, automobile part processing and the like, the processing quality of parts has a critical influence on the performance and service life of products. Many parts such as engine blocks, hydraulic valve blocks, transmission parts, etc. have a cross-shaped internal bore structure that is subject to burrs, rough surfaces, or dimensional deviations after casting or machining. The improvement of the surface quality of the inner hole has important significance for ensuring the assembly precision, improving the service performance and prolonging the service life of the part. The good inner hole surface quality can reduce friction and abrasion between parts, improve the sealing performance of the parts, reduce energy loss, and further improve the operation efficiency and reliability of the whole mechanical equipment. Therefore, the polishing treatment of the inner holes is an indispensable procedure to meet the use requirements of high precision and high performance. The traditional inner hole polishing mode mainly comprises the following steps that a fixed polishing tool is adopted, a polishing head is directly arranged on a main shaft of a machine tool, and the polishing head is driven to polish an inner hole of a part through rotation of the main shaft. The method is relatively simple and convenient to operate, and the basic polishing action can be completed only by controlling the rotation of the main shaft of the machine tool. The other is to adopt a manual polishing mode, and a worker holds a polishing tool to polish the inner hole of the part. The mode gives the worker greater operation flexibility, and the worker can adjust the polishing force and direction at any time according to the actual condition of the inner hole. There are also some polishing devices driven by hydraulic or pneumatic pressure, in which the movement of the polishing head is controlled by pressure, and the movement and polishing action of the polishing head are achieved by precise control of a hydraulic or pneumatic system. At present, the traditional polishing mode has obvious defects when facing inner holes with complex shapes such as cross inner holes, and the like, the traditional polishing mode only uses a single polishing head to polish one tooth surface or one area, and needs frequent start and stop, indexing and transposition, so that a single processing period is long, high-efficiency and accurate polishing is difficult to realize, and the traditional unidirectional or intermittent polishing mode is not beneficial to timely discharging of abrasive dust, is easy to cause adhesion and blockage of the abrasive dust, and affects polishing quality and efficiency. Meanwhile, the polishing force and time of each area are difficult to be completely consistent due to sectional polishing, so that tool marks and uneven wear are easy to occur, and the overall smoothness and shape accuracy of the inner hole are affected. In addition, the traditional polishing mode depends on a manual or multiple indexing control system, so that accumulated errors are easy to generate, and the precision of the whole product is influenced. Disclosure of Invention In order to improve the problems that the traditional polishing head is single, only a limited area can be polished, the operation is complicated, the processing period is long, the traditional polishing mode is not beneficial to discharging waste scraps, the polishing efficiency and quality are affected, and the polishing product precision is easy to cause for multistage polishing, the application provides an inner hole polishing device. The application provides an inner hole polishing device which adopts the following technical scheme: The inner hole polishing device comprises a lathe bed, a first eccentric assembly, a second eccentric assembly and a polishing assembly, wherein the first eccentric assembly is arranged on one side surface of the lathe bed and used for driving an overall structure to move up and down to exacerbate polishing and discharge scraps, the second eccentric assembly is arranged on the other side surface of the lathe bed and used for polishing a cross inner hole of a part, the second eccentric assembly comprises a driving part, a rotating part and a lifting part, the lifting part is arranged on the side surface of the lathe bed, the driving part is arranged on the lifting part, the rotating part is arranged on the output end of the driving part, the first eccentric assembly and the second eccentric assembly are in transmission connection through a connecting rod mechanism, an adjusting assembly used for coordinating the distance between the first eccentric assembly and the second eccentric assembly is arranged on the end surface of the lathe bed, the polishing assembly is arranged on t