A grinding machine for machining shaft parts

Abstract

The application relates to a grinder for machining shaft parts, which comprises a machine body, XY-axis moving platforms and a grinding wheel assembly. Two groups of X-axis moving platforms are arranged on the machine body, and a limiting rod is rotatably connected to each of the two groups of X-axis moving platforms. The two limiting rods are used for being inserted into two positioning holes and pressing against a shaft body. A Y-axis moving platform is arranged on the machine body, a rotating shaft one is rotatably connected to the Y-axis moving platform, the rotating shaft one comprises a main shaft and a pipe body one, a non-circular connecting block is arranged at the end of the main shaft, a sliding groove matched with the shape of a sliding block is arranged on the pipe body one, the connecting block is slidably arranged in the sliding groove, and a control mechanism for controlling the rotation of the main shaft is arranged on the Y-axis moving platform. The same specification driving gears and rubber wheels are arranged on the pipe body one, the rubber wheels are used for being aligned and engaged with the gears one before workpiece grinding machining, and a driving mechanism for driving the pipe body one to slide is further arranged on the Y-axis moving platform. The application can reduce the jumping of the shaft body during machining and improve the grinding precision.

Description

Technical Field

[0001] This invention relates to the field of grinding machines, and in particular to a grinding machine for machining shaft-type parts. Background Technology

[0002] A type of shaft part such as Figure 1 As shown, the device includes a shaft 6, with positioning holes 61 on both end faces. Gear 1 62 and Gear 2 63 are integrally formed on the shaft 6. Sidewall 1 64 and Sidewall 2 65 are located at both ends of the shaft 6. Sidewall 1 64 and Sidewall 2 65 are mounting surfaces and need to mate with other components; therefore, sidewall 1 64 and Sidewall 2 65 require grinding to ensure the surface roughness meets requirements.

[0003] The part is prone to runout during machining, which affects the grinding accuracy of the sidewall. Therefore, it is necessary to design a CNC grinding machine based on the shape characteristics of the part to reduce the probability of runout during the grinding process. Summary of the Invention

[0004] This application provides a grinding machine for machining shaft-type parts, which can reduce shaft runout and improve grinding accuracy during machining.

[0005] The grinding machine for machining shaft-type parts provided in this application adopts the following technical solution:

[0006] A grinding machine for machining shaft parts includes a machine body, an XY axis moving platform, and a grinding wheel assembly. The machine body is provided with two sets of X-axis moving platforms. Each of the two sets of X-axis moving platforms is rotatably connected to a limit rod. The two limit rods are used to insert into two positioning holes on both sides of the shaft body, thereby pressing against the shaft body.

[0007] The machine body is equipped with a Y-axis moving platform, and a rotating shaft is rotatably connected to the Y-axis moving platform. The rotating shaft includes a main shaft and a tube. The end of the main shaft is equipped with a non-circular connecting block. The tube is provided with a sliding groove that matches the shape of the connecting block. The connecting block is slidably disposed in the sliding groove, so that the main shaft can drive the tube to rotate, while allowing the tube to slide along the main shaft axis. The Y-axis moving platform is equipped with a control mechanism for controlling the rotation of the main shaft.

[0008] The tube body is provided with a drive gear and a rubber wheel of the same specifications. The rubber wheel is used to align and mesh with the gear one integrally formed on the shaft body before the workpiece is ground. The Y-axis moving platform is also provided with a drive mechanism for driving the tube body to slide. When the rubber wheel and the gear one integrally formed on the shaft body are aligned and meshed and rotate together, the drive mechanism drives the tube body to slide so that the drive gear meshes with the gear one and the rubber wheel disengages from the gear one.

[0009] Preferably, the control mechanism comprises a motor one arranged on the Y-axis moving platform, a belt pulley one arranged on the output shaft of the motor one, a belt pulley two arranged on the main shaft, and a belt used to connect the belt pulley one and the belt pulley two, and the driving gear is arranged on the rotating shaft one.

[0010] Preferably, the driving mechanism comprises a cylinder body, a sliding block slidingly connected in the cylinder body, a connecting rod arranged on the sliding block, a first bearing arranged on the connecting rod and connected with the pipe body one, two air inlet pipes one and two arranged on the cylinder body, a mounting groove one opened on the inner wall of the cylinder body, two air outlet holes opened on the side wall of the mounting groove one, a blocking block slidingly connected in the mounting groove one, two matching blocks arranged on the two ends of the blocking block, and an air injection assembly used to inject gas into the air inlet pipe one and the air inlet pipe two.

[0011] Preferably, the air injection assembly comprises a first inflator and a second inflator arranged on one side of the machine body, two power rods, a power shaft one rotatably connected with the Y-axis moving platform, two one-way bearings respectively arranged on the two ends of the power shaft one, a first rotating disc and a second rotating disc respectively connected with the two one-way bearings, and a power part used to drive the power shaft one to rotate; the air inlet pipe one is connected with the air outlet of the first inflator, and the air inlet pipe two is connected with the air outlet of the second inflator; one end of one of the power rods is hinged with the first rotating disc, and the other end is hinged with the piston rod of the first inflator; one end of the other power rod is hinged with the second rotating disc, and the other end is hinged with the piston rod of the second inflator; the power shaft one drives the first rotating disc to rotate in the forward direction, and drives the second rotating disc to rotate in the reverse direction.

[0012] Preferably, the power part comprises a first transmission gear arranged on the power shaft one, a power shaft two rotatably connected with the Y-axis moving platform, a second transmission gear arranged on the power shaft two and engaged with the first transmission gear, a third transmission gear arranged on the power shaft two, and a fourth transmission gear arranged on the output shaft of the motor one and engaged with the third transmission gear.

[0013] Preferably, the two first inflators and the second inflators are located on the side of the cylinder body away from the XY-axis moving platform, and the motor one is located above the first inflator and the second inflator.

[0014] Preferably, the air injection assembly comprises a first air pump and a second air pump arranged on one side of the machine body, the air inlet pipe one is connected with the air outlet of the first air pump, and the air inlet pipe two is connected with the air outlet of the second air pump.

[0015] The technical effects of the present application mainly embody in the following aspects:

[0016] 1、The present application sets two limiting rods to press the shaft body, improves the stability of the shaft body when rotating, and reduces the jumping of the shaft body;

[0017] 2、The present application sets a rubber gear to align the gear one, prevents the driving gear from directly colliding and wearing when aligning with the gear one;

[0018] 3、The present application starts the motor to drive the pipe body one to slide after the rubber wheel aligns with the gear one, finally makes the driving gear mesh with the gear one and rotates together, so that the driving gear can stably drive the shaft body to rotate. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic view of the shaft part.

[0020] Figure 2 is a structural schematic view of the rubber wheel and the gear one after abutting after the grinder of the first embodiment is started.

[0021] Figure 3 is Figure 2 a partial enlarged view of A in the first embodiment.

[0022] Figure 4 is an exploded view of the main shaft, the pipe body one and other components.

[0023] Figure 5 is a structural schematic view of the cylinder body, the connecting rod, the rotating shaft one and other components.

[0024] Figure 6 is Figure 5 a sectional view of the components along the line B-B in the first embodiment.

[0025] Figure 7 is Figure 6 a partial enlarged view of C in the first embodiment.

[0026] Figure 8 is a partial structural schematic view of the cylinder body, the sliding block and the connecting rod.

[0027] Figure 9 is a structural schematic view of the control mechanism, the driving mechanism, the gas injection mechanism and the power part.

[0028] Figure 10 is Figure 9 a structural schematic view of each component from another angle in the first embodiment.

[0029] Figure 11 is a structural schematic view of the grinder in the second embodiment.

[0030] Label: 1, body; 12, XY axis moving platform; 13, grinding wheel assembly; 14, X axis moving platform; 15, limiting rod; 16, Y axis moving platform; 17, drive gear; 18, rubber wheel; 19, shaft one; 191, main shaft; 192, pipe body one; 193, connecting block; 194, sliding groove; 2, control mechanism; 21, motor one; 22, pulley one; 24, pulley two; 25, belt; 3, drive mechanism; 31, cylinder; 311, chamber one; 312, chamber two; 32, sliding block; 33, connecting rod; 34, first bearing; 35, air inlet pipe one; 36, air inlet pipe two; 37, mounting groove one; 38, air outlet hole; 39, plugging block; 40, matching block; 4, gas injection assembly; 41, first inflator; 42, second inflator; 43, power rod; 44, power shaft one; 45, one-way bearing; 46, first turntable; 47, second turntable; 5, power part; 51, first transmission gear; 52, power shaft two; 53, second transmission gear; 54, third transmission gear; 55, fourth transmission gear; 6, shaft body; 61, positioning hole; 62, gear one; 63, gear two; 64, side wall one; 65, side wall two; 71, first air pump; 72, second air pump. DETAILED DESCRIPTION

[0031] The application will be further described in detail below with reference to the accompanying drawings, so that the technical scheme of the present application is easier to understand and master. Example one

[0032] Referring to Figure 2 The body of the grinder for machining shaft parts of the embodiment comprises a body 1, an XY axis moving platform 12 arranged on the body 1, and a grinding wheel assembly 13. The grinding wheel assembly 13 is installed on the XY axis moving platform 12, and the grinding wheel assembly 13 is composed of a grinding wheel, a mounting shaft, a drive motor and other components. The components of the grinding wheel assembly 13 and the mounting manner are well known in the art, and will not be described in detail in the specification.

[0033] Referring to Figure 2 and Figure 3 Two X axis moving platforms 14 are installed on the body 1, and the limiting rods 15 are rotatably connected to the two X axis moving platforms 14. The axes of the two limiting rods 15 coincide. Before the shaft body 6 is subjected to grinding, the technician places the shaft body 6 between the two limiting rods 15, aligns the two positioning holes 61 with the two limiting rods 15, and then moves the two X axis moving platforms 14 towards each other, so that the two limiting rods 15 are inserted into the two positioning holes 61 and press against the shaft body 6, thereby completing the limiting and fixing of the shaft body 6. Compared with the traditional single limiting rod 15 pressing mode, the two limiting rods 15 of the present application press against the shaft body 6, which can effectively improve the stability of the shaft body 6 during rotation, thereby reducing the runout of the shaft body 6 during grinding.

[0034] Referring toFigures 2-4 The body 1 is provided with a Y-axis moving platform 16, and a rotating shaft one 19 is rotatably connected to the Y-axis moving platform 16. The rotating shaft one 19 comprises a main shaft 191 and a pipe body one 192. The end of the main shaft 191 is provided with a non-circular connecting block 193, and the pipe body one 192 is provided with a sliding groove 194 matched with the shape of the sliding block 32. The connecting block 193 is slidably arranged in the sliding groove 194, so that the main shaft 191 can drive the pipe body one 192 to rotate, and at the same time allows the pipe body one 192 to slide along the main shaft 191 in the axial direction. The connecting block 193 of the embodiment is a hexagonal block.

[0035] Referring to Figure 2 and Figure 3 The Y-axis moving platform 16 is provided with a control mechanism 2 for controlling the rotation of the main shaft 191. The control mechanism 2 comprises a motor one 21 mounted on the top of the Y-axis moving platform 16, a belt pulley one 22 fixed on the output shaft of the motor one 21, a belt pulley two 24 fixed on the end of the main shaft 191, and a belt 25 for connecting the belt pulley one 22 and the belt pulley two 24.

[0036] Referring to Figure 2 and Figure 3 The pipe body one 192 is fixed with a driving gear 17 and a rubber wheel 18 of the same specification. The rubber wheel 18 is used to align and engage with the gear one 62 before the workpiece is ground. When the shaft body 6 is pressed and limited by the two limiting rods 15, the gear one 62 is opposite to the rubber wheel 18 and located on the movement path of the rubber wheel 18 in the Y-axis direction. When the Y-axis moving platform 16 moves to drive the rubber wheel 18 to move in the Y-axis direction, the rubber wheel 18 will collide and engage with the gear one 62.

[0037] Referring to Figure 2 and Figure 3 Meanwhile, the Y-axis moving platform 16 is also provided with a driving mechanism 3 for driving the pipe body one 192 to slide along the length direction thereof (the length direction of the pipe body one 192 is the X-axis direction). When the rubber wheel 18 aligns and engages with the gear one 62 and rotates together, the driving mechanism 3 drives the pipe body one 192 to slide so that the driving gear 17 switches to engage with the gear one 62, and the rubber wheel 18 moves away from the gear one 62.

[0038] Referring to Figures 3-8 The driving mechanism 3 comprises a cylinder body 31 fixed on the Y-axis moving platform 16, a sliding block 32 slidably connected in the cylinder body 31 in the X-axis direction, a connecting rod 33 fixed on the sliding block 32, and a first bearing 34. One end of the connecting rod 33 extends out of the cylinder body 31, the first bearing 34 is sleeved on the end of the connecting rod 33 extending out of the cylinder body 31, and the pipe body one 192 is sleeved on the first bearing 34 and connected with the outer ring of the first bearing 34.

[0039] Referring to Figures 3-8The driving mechanism 3 further comprises an air inlet pipe 35 and an air inlet pipe 36 mounted on the cylinder body 31, a mounting groove 37 formed on the inner wall of the cylinder body 31, two air outlet holes 38 formed on the side wall of the mounting groove 37, a blocking block 39 slidingly connected in the mounting groove 37 along the X-axis direction, and two matching blocks 40 welded on both ends of the blocking block 39.

[0040] With reference to Figures 5-8 The inner cavity of the cylinder body 31 is divided into a chamber 311 and a chamber 312 by the sliding block 32, the chamber 312 is located on the side of the chamber 311 close to the driving gear 17, the air inlet pipe 35 communicates with the chamber 311, the air inlet pipe 36 communicates with the chamber 312, and the two air outlet holes 38 respectively communicate with the chamber 311 and the chamber 312. The two matching blocks 40 are respectively located on both sides of the sliding block 32 and are located on the movement path of the sliding block 32.

[0041] With reference to Figures 5-8 When the motor 21 is not started, the blocking block 39 blocks the air outlet hole 38 communicating with the chamber 311, at this time the chamber 311 cannot communicate with the outside through the perforation, while the chamber 312 can communicate with the outside through the perforation, this initial state ensures that when the chamber 311 is inflated, the pressure can be effectively established to drive the sliding block 32. During the subsequent sliding of the sliding block 32 close to the main shaft 191, the matching block 40 close to the driving gear 17 is collided to drive the blocking block 39 to slide close to the main shaft 191, so that the blocking block 39 no longer blocks the air outlet hole 38 communicating with the chamber 311, and the blocking block 39 blocks the air outlet hole 38 communicating with the chamber 312.

[0042] With reference to Figure 3 , Figure 9 and Figure 10 The air injection assembly 4 comprises a first air pump 41 and a second air pump 42 arranged on the Y-axis moving platform 16, two power rods 43, a power shaft 44 rotatably connected to the Y-axis moving platform 16, two one-way bearings 45 respectively arranged on both ends of the power shaft 44, and a first rotating disc 46 and a second rotating disc 47 respectively connected to the two one-way bearings 45.

[0043] With reference to Figure 3 , Figure 9 and Figure 10 The air inlet pipe 35 is connected to the air outlet of the first air pump 41, and the air inlet pipe 36 is connected to the air outlet of the second air pump 42. One end of one of the power rods 43 is hingedly connected to the first rotating disc 46, and the other end is hingedly connected to the piston rod of the first air pump 41. One end of the other power rod 43 is hingedly connected to the second rotating disc 47, and the other end is hingedly connected to the piston rod of the second air pump 42.

[0044] With reference to Figure 3 ,Figure 9 and Figure 10 , the first air pump 41 and the second air pump 42 are located on the side of the cylinder 31 away from the XY axis moving platform 12, and the motor one 21 is located above the first air pump 41 and the second air pump 42. This embodiment uses an internal air injection assembly 4 instead of an external air source to adapt to factory working environments without external air sources.

[0045] Referring to Figure 3 , Figure 9 and Figure 10 , the air injection assembly 4 further comprises a power part 5 for driving the rotation of the power shaft one 44. The power shaft one 44 drives the rotation of the first turntable 46 in the forward direction, and the power shaft one 44 drives the rotation of the second turntable 47 in the reverse direction. The power shaft one 44 drives the rotation of the first turntable 46 in the forward direction, and the second turntable 47 is not affected. The rotation of the first turntable 46 drives the reciprocating motion of the piston rod of the first air pump 41 through a power rod 43, and the external air is pressed into the chamber one 311 through the air inlet pipe one 35. The power shaft one 44 drives the rotation of the second turntable 47 in the reverse direction, and the first turntable 46 is not affected. The rotation of the second turntable 47 drives the reciprocating motion of the piston rod of the second air pump 42 through a power rod 43, and the external air is pressed into the chamber two 312 through the air inlet pipe two 36.

[0046] Referring to Figure 3 , Figure 9 and Figure 10 , the power part 5 comprises a first transmission gear 51 mounted on the power shaft one 44, a power shaft two 52 rotatably connected to the Y axis moving platform 16, a second transmission gear 53 mounted on the power shaft two 52 and meshing with the first transmission gear 51, a third transmission gear 54 mounted on the power shaft two 52, and a fourth transmission gear 55 mounted on the output shaft of the motor one 21 and meshing with the third transmission gear 54. The power shaft two 52 is located above the power shaft one 44 and below the motor one 21.

[0047] In this application, the XY axis moving platform 12, the Y axis moving platform 16 and the X axis moving platform 14 are all the most common moving platforms on a grinding machine, and the motion directions of the three are distinguished by naming: the XY axis moving platform 12 can reciprocate along the X axis and Y axis directions on the machine tool. The Y axis moving platform 16 can reciprocate along the Y axis direction on the machine tool. The X axis moving platform 14 can reciprocate along the X axis direction on the machine tool.

[0048] Referring to Figures 2-10 , the processing steps of the grinding machine of the present application are as follows:

[0049] First, the technician will put the shaft body 6 between the two limiting rods 15, align the two positioning holes 61 with the two limiting rods 15, and then move the two X-axis moving platforms 14 towards each other, so that the two limiting rods 15 are inserted into the two positioning holes 61 and press against the shaft body 6, completing the limiting and fixing of the shaft body 6.

[0050] Then move the Y-axis moving platform 16 towards the grinding wheel assembly 13, so that the rubber wheel 18 is aligned with the gear one 62 and engaged. Since the shaft body 6 is placed manually, the rubber wheel 18 may not be fully engaged with the gear one 62, and the teeth on the rubber wheel 18 may be deformed and inserted between the teeth of the gear one 62.

[0051] After the rubber wheel 18 collides with the gear one 62, the motor one 21 rotates in the positive direction, which drives the belt pulley one 22 and the fourth transmission gear 55 to rotate in the positive direction. The belt pulley one 22 rotates in the positive direction, which drives the belt pulley two 24 and the main shaft 191 to rotate through the belt 25, and the main shaft 191 rotates, which drives the tube body one 192, the driving gear 17 and the rubber wheel 18 to rotate. The rotation of the rubber wheel 18 causes the teeth of the rubber wheel 18 to slide relative to the teeth of the gear one 62, until the teeth of the two are aligned and fully engaged, thereby driving the gear one 62 to rotate with the shaft body 6.

[0052] The fourth transmission gear 55 rotates in the positive direction, which drives the power shaft two 52, the third transmission gear 54 and the second transmission gear 53 to rotate in the positive direction. The second transmission gear rotates in the positive direction, which drives the first rotating teeth and the power shaft one 44 to rotate in the positive direction, and the power shaft one 44 rotates in the positive direction, which drives the first rotating disc 46 to rotate. The rotation of the first rotating disc 46 drives the piston rod of the first air pump 41 to reciprocate, which pressurizes the air in the chamber one 311 through the air inlet pipe one 35, so that the air pressure in the chamber one 311 increases, thereby driving the sliding block 32 to move towards the main shaft 191.

[0053] When the sliding block 32 moves towards the main shaft 191, it drives the tube body one 192, the driving gear 17 and the rubber wheel 18 to move towards the belt pulley two 24 through the connecting rod 33, so that the driving gear 17 moves to engage with the gear one 62, and the rubber wheel 18 moves away from the gear one 62, ensuring that the power of the tube body one 192 can be effectively transmitted to the shaft body 6, so that the shaft body 6 can rotate at a relatively constant speed.

[0054] Subsequently, the slider 32 will collide with the matching block 40 on the side close to the drive gear 17, thereby driving the blocking block 39 to slide towards the main shaft 191, so that the blocking block 39 no longer blocks the air outlet hole 38 communicating with the chamber one 311, but blocks the air outlet hole 38 communicating with the chamber two 312. The gas pressed into the chamber one 311 will be discharged through the air outlet hole 38, and will no longer push the drive gear 17 to move, ensuring the engagement of the drive gear 17 and the gear one 62. However, the gas source will continue to be pressed into the chamber one 311, preventing the drive gear 17 from being displaced by external force, ensuring the engagement of the drive gear 17 and the gear one 62, and ensuring the stability of power transmission.

[0055] After the stable rotation of the shaft body 6, the XY-axis moving platform 12 moves with the grinding wheel assembly 13, so that the grinding wheel assembly 13 grinds the side wall one 64 and the side wall two 65. After the grinding and polishing of the side wall one 64 and the side wall two 65 are completed, the Y-axis moving platform 16 moves away from the grinding wheel assembly 13, so that the drive gear 17 is no longer engaged with the gear one 62.

[0056] Then the motor reverses, drives the fourth transmission gear 55 to reverse, the fourth transmission gear 55 reverses to drive the power shaft one 44 to reverse, the power shaft one 44 reverses to drive the second rotating disc 47 to rotate, the second rotating disc 47 rotates to drive the piston rod of the second air pump 42 to reciprocate, and the air outside the air pump is pressed into the chamber two 312 through the air inlet pipe two 36, so that the air pressure in the chamber two 312 increases, thereby driving the slider 32 to move away from the main shaft 191.

[0057] When the slider 32 moves away from the main shaft 191, it will push the pipe body one 192, the drive gear 17 and the rubber wheel 18 away from the belt pulley two 24 through the connecting rod 33, thereby moving back to the original position. Finally, the slider 32 will collide with the matching block 40 away from the drive gear 17 and drive the blocking block 39 to move away from the main shaft 191, so that the blocking block 39 no longer blocks the air outlet hole 38 communicating with the chamber two 312, but blocks the air outlet hole 38 communicating with the chamber one 311. In this way, the gas pressed into the chamber two 312 will be discharged through the air outlet hole 38, so that the pressure in the chamber two 312 returns to the normal pressure level, and the gas entering the chamber two 312 will not push the slider 32 to slide. At this time, the slider 32, the drive gear 17, the rubber wheel 18 and the blocking block 39 are all moved to the initial position.

[0058] Then the technician holds the shaft body 6 after the grinding process, and the two X-axis moving platforms 14 move away from each other, canceling the pressure of the two limiting rods 15 on the shaft body 6. The technician can then take down the processed shaft body 6.

[0059] Example two: the difference from example one is the difference of the gas injection assembly 4.

[0060] Referring to Figures 2-8 , Figure 11 , the air injection assembly 4 of the second embodiment includes a first air pump 71 and a second air pump 72 arranged on one side of the machine body 1. The first air pump 71 is connected to the air inlet pipe 1, and the second air pump 72 is connected to the air inlet pipe 2.

[0061] Referring to Figures 2-8 , Figure 11 , after the rubber wheel 18 collides with and engages with the gear 1, and the rubber wheel 18 drives the gear 1 and the shaft body 6 to rotate, the first air pump 71 starts to press air into the chamber 1 through the air inlet pipe 1, driving the sliding block 32, the pipe body 1, the driving gear 17, and the rubber wheel 18 to move close to the main shaft 1, so that the driving gear 17 is switched to the state of engaging with the gear 1. During this process, the first air pump 71 will always press air into the chamber 1, ensuring that the driving gear 17 and the gear 1 are always in synchronous rotation.

[0062] Referring to Figures 2-8 , Figure 11 , after the grinding and polishing of the side wall 1 and the side wall 2 are completed, the Y-axis moving platform 16 moves away from the grinding wheel assembly 13, so that the driving gear 17 is no longer engaged with the gear 1. Then the first air pump 71 stops, and the second air pump 72 starts to press air into the chamber 2 through the air inlet pipe 2, driving the sliding block 32, the pipe body 1, the driving gear 17, and the rubber wheel 18 to reset. Prepare for the grinding and polishing of the next shaft body 6.

[0063] Of course, the above is only a typical example of the present application, in addition to which the present application can have other various specific embodiments, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

Claims

1. A grinding machine for machining shaft-type parts, comprising a machine body (1), an XY-axis moving platform (12), and a grinding wheel assembly (13), characterized in that: The machine body (1) is provided with two sets of X-axis moving platforms (14), and each of the two sets of X-axis moving platforms (14) is rotatably connected with a limit rod (15). The two limit rods (15) are used to insert into the two positioning holes (61) on both sides of the shaft (6) to press against the shaft (6). The machine body (1) is provided with a Y-axis moving platform (16), and a rotating shaft (19) is rotatably connected to the Y-axis moving platform (16). The rotating shaft (19) includes a main shaft (191) and a tube (192). The end of the main shaft (191) is provided with a non-circular connecting block (193). The tube (192) is provided with a sliding groove (194) that matches the shape of the connecting block (193). The connecting block (193) is slidably disposed in the sliding groove (194), so that the main shaft (191) can drive the tube (192) to rotate, while allowing the tube (192) to slide along the axis of the main shaft (191). The Y-axis moving platform (16) is provided with a control mechanism (2) for controlling the rotation of the main shaft (191). The tube body (192) is provided with a drive gear (17) and a rubber wheel (18) of the same specifications. The rubber wheel (18) is used to align and mesh with the gear (62) integrally formed on the shaft (6) before the workpiece is ground. The Y-axis moving platform (16) is also provided with a drive mechanism (3) for driving the tube body (192) to slide. When the rubber wheel (18) aligns and meshes with the gear (62) integrally formed on the shaft (6) and rotates together, the drive mechanism (3) drives the tube body (192) to slide so that the drive gear (17) meshes with the gear (62) and the rubber wheel (18) disengages from the gear (62).

2. The grinding machine for machining shaft-type parts according to claim 1, characterized in that: The control mechanism (2) includes a motor (21) on the Y-axis moving platform (16), a pulley (22) on the output shaft of the motor (21), a pulley (24) on the main shaft (191), and a belt (25) for connecting the pulley (22) and the pulley (24). The drive gear (17) is located on the rotating shaft (19).

3. A grinding machine for machining shaft-type parts according to claim 2, characterized in that: The drive mechanism (3) includes a cylinder (31), a slider (32) slidably connected in the cylinder (31), a connecting rod (33) on the slider (32), a first bearing (34) on the connecting rod (33) and connected to the first pipe (192), an air intake pipe (35) and an air intake pipe (36) on the cylinder (31), a mounting groove (37) on the inner wall of the cylinder (31), two air outlets (38) on the side wall of the mounting groove (37), a sealing block (39) slidably connected in the mounting groove (37), and two air outlets (38) on both ends of the sealing block (39). The assembly includes a mating block (40) and an air injection component (4) for injecting gas into the first intake pipe (35) and the second intake pipe (36). The slider (32) divides the inner cavity of the cylinder (31) into a first chamber (311) and a second chamber (312). The first intake pipe (35) is connected to the first chamber (311), and the second intake pipe (36) is connected to the second chamber (312). The two air outlets (38) are connected to the first chamber (311) and the second chamber (312) respectively. The two mating blocks (40) are located on both sides of the slider (32) and are both located on the movement path of the slider (32).

4. A grinding machine for machining shaft-type parts according to claim 3, characterized in that: The air injection assembly (4) includes a first air pump (41) and a second air pump (42) mounted on the Y-axis moving platform (16), two power rods (43), a power shaft (44) rotatably connected to the Y-axis moving platform (16), two one-way bearings (45) respectively mounted on both ends of the power shaft (44), a first turntable (46) and a second turntable (47) respectively connected to the two one-way bearings (45), and a power unit (5) for driving the power shaft (44) to rotate; the air inlet pipe (35) is connected to the first air pump (41) The air inlet pipe (36) is connected to the air outlet of the second air pump (42); one end of one of the power rods (43) is hinged to the first turntable (46), and the other end is hinged to the piston rod of the first air pump (41); one end of the other power rod (43) is hinged to the second turntable (47), and the other end is hinged to the piston rod of the second air pump (42); the first power shaft (44) rotates forward to drive the first turntable (46) to rotate, and the first power shaft (44) rotates in reverse to drive the second turntable (47) to rotate.

5. A grinding machine for machining shaft-type parts according to claim 4, characterized in that: The power unit (5) includes a first transmission gear (51) mounted on a power shaft (44), a second power shaft (52) rotatably connected to a Y-axis moving platform (16), a second transmission gear (53) mounted on the second power shaft (52) and meshing with the first transmission gear (51), a third transmission gear (54) mounted on the second power shaft (52), and a fourth transmission gear (55) mounted on the output shaft of a motor (21) and meshing with the third transmission gear (54).

6. A grinding machine for machining shaft-type parts according to claim 4, characterized in that: Both the first air pump (41) and the second air pump (42) are located on the side of the cylinder body (31) away from the XY axis moving platform (12), and the motor (21) is located above the first air pump (41) and the second air pump (42).

7. A grinding machine for machining shaft-type parts according to claim 3, characterized in that: The air injection assembly (4) includes a first air pump (71) and a second air pump (72) located on one side of the body (1). The first air inlet pipe (35) is connected to the air outlet of the first air pump (71), and the second air inlet pipe (36) is connected to the air outlet of the second air pump (72).

Images