CN-121848222-B - Centreless grinder

CN121848222BCN 121848222 BCN121848222 BCN 121848222BCN-121848222-B

Abstract

The application belongs to the technical field of intelligent centerless grinding machines, and particularly relates to a centerless grinding machine which is used for grinding an air inlet and outlet cam shaft. The application relates to a device for grinding a rotating surface of a workpiece, which is characterized in that an auxiliary grinding wheel and an auxiliary guide wheel capable of asynchronously rotating are arranged, so that the same equipment can adapt to grinding of two different types of air inlet and outlet camshafts of EB6.2 and EB6.2LTx, the universality and the utilization rate of the equipment are improved, and the problem of functional limitation is solved.

Inventors

WANG SHENGYUN
Dai Zhengcao
HU PENGCHENG
ZHENG RENZHONG
YUAN XIANZHONG
TU LEI
YOU CHENGMING
ZENG QILIN

Assignees

中汽成都配件有限公司

Dates

Publication Date: 20260508
Application Date: 20260319

Claims (6)

1. A centerless grinder for grinding intake and exhaust camshafts (500) of different models is characterized in that, Comprising the following steps: a grinder housing (100), the grinder housing (100) having a work table; Grinding device (300), the grinding device (300) comprising a main grinding wheel (310), an auxiliary grinding wheel (320), a main transmission guide wheel (340) and an auxiliary guide wheel (350), wherein: Main grinding wheel (310), auxiliary grinding wheel (320), main drive guide pulley (340) and auxiliary guide pulley (350) all rotate connect in on the workstation of grinding machine shell (100), to the two types grinding of advance exhaust camshaft (500), two auxiliary grinding wheel (320) coaxial set up in main grinding wheel (310) both sides, two auxiliary guide pulley (350) coaxial set up in main drive guide pulley (340) both sides, main grinding wheel (310), advance exhaust camshaft (500) with the center pin parallel arrangement of main drive guide pulley (340), advance exhaust camshaft (500) set up between main grinding wheel (310) and main drive guide pulley (340), wherein: For different types of air inlet and outlet camshafts (500), controlling one pair of opposite auxiliary guide wheels (350) and auxiliary grinding wheels (320) to rotate, wherein the other pair of opposite auxiliary guide wheels (350) and auxiliary grinding wheels (320) do not rotate; The polishing device (300) further comprises a moving device (360), two moving devices (360) are connected between the main grinding wheel (310) and the auxiliary grinding wheel (320), the other two moving devices (360) are connected between the main transmission guide wheel (340) and the auxiliary guide wheel (350), the moving devices (360) comprise a transmission part (362), a length changing part (361) and a driving part (364), the positions between the transmission part (362) and the main transmission guide wheel (340) of the main grinding wheel (310) can be adjusted by the two length changing parts (361), the positions between the transmission part (362) and the main transmission guide wheel (340) of the main grinding wheel (310) can be adjusted by the other two length changing parts (361), the transmission part (362) is used for transmitting rotary power to drive the auxiliary guide wheel (350) to rotate, the transmission part (362) is used for transmitting rotary power to drive the auxiliary guide wheel (320) to rotate, the driving part (364) is used for driving the auxiliary guide wheel (320) to change positions, and the driving part (364) is used for driving the auxiliary guide wheel (350) to change positions; The polishing device (300) further comprises a first connecting rod (363), the length changing piece (361) comprises a first staggered rod (3611), a second staggered rod (3612) and a first bolt (3613), the first staggered rod (3611) is connected to the first connecting rod (363), two first connecting rods (363) are respectively connected to the auxiliary guide wheel (350), the other two first connecting rods (363) are respectively connected to the auxiliary grinding wheel (320), the second staggered rod (3612) is slidably connected to the first staggered rod (3611), and the first bolt (3613) is in threaded connection with the second staggered rod (3612) and the first staggered rod (3611); The transmission piece (362) comprises transmission teeth (3621), driven teeth (3622) and a driven rod (3623), the transmission teeth (3621) are connected with the second staggered rod (3612), two driven teeth (3622) are respectively connected to two sides of the main grinding wheel (310), the other two driven teeth (3622) are connected to the main transmission guide wheel (340), the driven teeth (3622) are respectively connected with the driven rod (3623), and the transmission teeth (3621) are respectively connected with the driven teeth (3622) and the driven rod (3623) in a meshed mode; the centerless grinder (10) further comprises a bracket device (400), the bracket device (400) comprises a bracket piece (410), an axial positioner (440) and an adjusting piece (430), the axial positioner (440) is connected to a workbench of the grinder shell (100), the adjusting piece (430) is connected to the bracket piece (410), the bracket piece (410) and the adjusting piece (430) are provided with a plurality of groups, and the adjusting piece (430) can drive the bracket piece (410) to lift.
2. The centerless grinding machine according to claim 1, wherein the grinding device (300) further comprises a second connecting rod (365) and a first bearing (366), the driver (364) comprises a cross plate (3641), a screw (3642), a moving block (3643) and a first motor (3644), the cross plate (3641) is connected in a workbench of the grinding machine housing (100), the screw (3642) is rotatably connected to the cross plate (3641), the first motor (3644) is connected to the screw (3642) through a rotating shaft, a threaded hole is formed in the moving block (3643), the screw (3642) is inserted into the threaded hole of the moving block (3643), the second connecting rod (365) is connected to the moving block (3643), the first bearing (366) has an outer ring and an inner ring, the second connecting rod (3642) is rotatably connected to the cross plate (3641), the first bearing (3644) is connected to the inner ring (366), and the second bearing (36320) is connected to the outer ring (366).
3. The centerless grinding machine according to claim 2, wherein the grinding device (300) further comprises a starting device (330), the starting device (330) comprises a second motor (331), a power shaft (332), a transmission chain (333), a transmission gear (334), a second bearing (335) and a first bracket (336), the two power shafts (332) are respectively connected to the main transmission guide wheel (340) and the main grinding wheel (310), the end parts of the power shafts (332) are fixedly connected with second bearings (335), the second bearings (335) are rotatably connected to the workbench of the grinding machine shell (100) through the first bracket (336), the positions, close to the end parts, of the power shafts (332) are respectively connected with the transmission gear (334), the second motor (331) is connected to the workbench of the grinding machine shell (100), and the transmission chain (333) is sleeved on the rotating shaft of the second motor (331) and the two transmission gears (334).
4. A centerless grinder according to claim 3, wherein the bracket member (410) comprises a small bracket (411), a limit groove (412) and a limit hole (413), the small bracket (411) is connected to the adjusting member (430), the limit hole (413) is formed in the small bracket (411), the limit groove (412) is formed in the limit hole (413) of the small bracket (411), the bracket device (400) further comprises a limit member (420), the limit member (420) comprises a limit rod (421), a limit groove (422), a torsion spring (423) and a bump block (424), the limit rod (421) is connected to the workbench of the grinder housing (100), the limit rod (421) is provided with the limit groove (422), the bump blocks (424) are inserted into the limit groove (422) of the limit rod (421), and a torsion spring (423) is connected between the bump block (424) and the limit rod (421).
5. The centerless grinder of claim 4 wherein the adjustment member (430) includes a threaded seat (431), a second bolt (432), a stop collar (433) and a stop circle (434), the threaded seat (431) is connected to the table of the grinder housing (100), the second bolt (432) is threaded into the threaded seat (431), the stop circle (434) is connected to the top of the second bolt (432), the stop collar (433) is connected to the small bracket (411), and the second bolt (432) is inserted into the stop collar (433) through the stop circle (434).
6. The centerless grinder of claim 1 wherein the centerless grinder (10) further includes a liquid spraying device (200), the liquid spraying device (200) including a water tank (210), a water pump (220), a water pipe (230) and a water spray nozzle (240), the water pump (220) being connected to the water tank (210), one end of the water pipe (230) being connected to the water pump (220), the other end of the water pipe (230) being connected to the water spray nozzle (240), the water spray nozzle (240) being for spraying a liquid.

Description

Centreless grinder Technical Field The application belongs to the technical field of intelligent centerless grinding machines, and particularly relates to a centerless grinding machine. Background The centerless grinder is a key device for carrying out high-precision cylindrical grinding on shaft parts such as an air inlet camshaft and an air outlet camshaft of an automobile engine. In modern automobile parts production, in order to meet market diversity and order flexibility requirements, the same production line is often required to have the capability of rapidly switching and compatibly processing various different types of workpieces. An intake and exhaust camshaft of EB6.2 model and EB6.2LTx model is taken as an example. In carrying out the present application, the applicant has found that at least the following disadvantages exist in the related art: in the prior art, the structure of the grinding wheel, the guide wheel and the bracket is difficult to adapt to the grinding of two camshafts with different structures, and the use has functional limitations. Disclosure of Invention Based on the technical problems, the application provides a centerless grinder, which aims to solve the technical problems that the guide wheel and bracket structure has functional limitations to at least a certain extent. In a first aspect of the application, the application provides a centerless grinding machine for grinding air intake and exhaust camshafts of different types, a grinding machine shell and a grinding device, wherein the grinding machine shell is provided with a workbench, the grinding device comprises a main grinding wheel, an auxiliary grinding wheel, a main transmission guide wheel and an auxiliary guide wheel, the main grinding wheel, the auxiliary grinding wheel, the main transmission guide wheel and the auxiliary guide wheel are all rotationally connected to the workbench of the grinding machine shell, for grinding of two types of air intake and exhaust camshafts, two auxiliary grinding wheels are coaxially arranged on two sides of the main grinding wheel, two auxiliary guide wheels are coaxially arranged on two sides of the main transmission guide wheel, the main grinding wheel, the air intake and exhaust camshafts are parallel to the central shaft of the main transmission guide wheel, the air intake and exhaust camshafts are arranged between the main grinding wheel and the main transmission guide wheel, one pair of opposite auxiliary guide wheels and the auxiliary grinding wheel are controlled to rotate for different types of air intake and exhaust camshafts, and the other pair of opposite auxiliary guide wheels and auxiliary grinding wheels are not rotated. In some embodiments, the polishing device further comprises a moving device, two moving devices are connected between the main grinding wheel and the auxiliary grinding wheel, the other two moving devices are connected between the main transmission guide wheel and the auxiliary guide wheel, the moving device comprises a transmission part, a length changing part and a driving part, the two length changing parts can adjust the position between the transmission part and the main transmission guide wheel of the main grinding wheel, the other two length changing parts can also adjust the position between the transmission part and the main transmission guide wheel of the main grinding wheel, the transmission part is used for transmitting rotary power to drive the auxiliary guide wheel to rotate, the transmission part is used for transmitting rotary power to drive the auxiliary grinding wheel to rotate, the driving part is used for driving the auxiliary grinding wheel to change the position, and the driving part is used for driving the auxiliary guide wheel to change the position. In some embodiments, the polishing device further comprises a first connecting rod, the length changing member comprises a first staggered rod, a second staggered rod and a first bolt, the first staggered rod is connected to the first connecting rod, two first connecting rods are respectively connected to the auxiliary guide wheels, the other two first connecting rods are respectively connected to the auxiliary guide wheels, the second staggered rod is slidably connected to the first staggered rod, and the first bolt is in threaded connection with the second staggered rod and the first staggered rod. In some embodiments, the driving member includes a driving tooth, a driven tooth and a driven rod, the driving tooth is connected with the second staggered rod, two driven teeth are respectively connected with two sides of the main grinding wheel, two other driven teeth are connected with the main driving guide wheel, the driven teeth are respectively connected with the driven rod, and the driving tooth is respectively connected with the driven tooth and the driven rod in a meshed manner. In some embodiments, the polishing device further comprises a second connecting rod and a first