An eccentric grinding processing device

Abstract

This invention relates to the field of grinding technology, specifically to an eccentric grinding apparatus. It includes a machine tool body and a chuck on the left support of the machine tool body. The machine tool body is slidably connected along a track to a right support located to the right of the chuck. The chuck is used to clamp eccentric parts. A hole plate corresponding to the chuck is installed on the left side of the right support. A telescopic cylinder is fixedly connected to the upper surface of the right support. A grinding rod is horizontally fixedly connected to the upper end of the telescopic cylinder. The grinding rod extends to the left and is fitted with a grinding frame. This invention utilizes gravity to press the grinding blocks against the upper outer wall of the eccentric part, ensuring consistent grinding force on the outer diameter of the eccentric part regardless of its rotation angle. This maintains the uniformity of grinding even when multiple outer diameters of the eccentric part are simultaneously ground by multiple grinding blocks.

Description

Technical Field

[0001] This invention relates to the field of grinding technology, specifically to an eccentric grinding apparatus. Background Technology

[0002] Eccentric grinding is a specialized grinding process for eccentric parts, which are mechanical parts whose center of rotation is not collinear with the center of their outer diameter. Typical applications include crankshafts in automobile engines (where the journal center of the connecting rod is offset from the center of the main journal) and eccentric shafts in various mechanical transmissions (such as core components in pumps, compressors, and other equipment used to transmit eccentric motion).

[0003] The core requirement of this type of machining lies in precisely controlling the relative position of the part and the grinding wheel to ensure that the center of the machined surface and the center of rotation of the part form a preset offset (i.e., "eccentricity"), thereby achieving an eccentric structure that meets design requirements. In specific machining processes, taking crankshaft machining as an example, specialized equipment is needed to accurately position the eccentric journal to be ground, ensuring that the grinding wheel precisely controls the eccentricity between the journal center and the spindle center during grinding, thus meeting the functional requirement of driving piston movement through the eccentric structure when the engine is running.

[0004] Currently, eccentric grinding mainly relies on specialized equipment such as CNC follow-up eccentric shaft grinding machines and eccentric grinding CNC machining tools. Its technical principle is to precisely control the relative movement between the grinding head and the workpiece through the CNC system, and combine the follow-up mechanism to adjust the position of the grinding head in real time according to the eccentric characteristics of the workpiece, so as to ensure that the grinding head always maintains a suitable position and angle with the workpiece surface to be processed during the grinding process, thereby achieving high-precision machining of eccentric shafts.

[0005] However, for parts with multiple eccentric outer circles, each eccentric outer circle usually needs to be ground sequentially. Since different eccentric outer circles often have different eccentricity parameters and phase angle requirements, parameter calibration and phase adjustment must be performed every time the machining location is switched, resulting in an excessively high proportion of non-grinding auxiliary time, which restricts machining efficiency. Summary of the Invention

[0006] To overcome the shortcomings of existing technologies, this invention proposes an eccentric grinding processing device. This invention uses the grinding block to press against the upper outer wall of the eccentric part by gravity, so that the grinding force of the grinding block on the outer circle of the eccentric part is consistent regardless of the rotation angle of the eccentric part. Thus, even when multiple outer circles of the eccentric part are ground by multiple grinding blocks at the same time, the uniformity of grinding of the outer circle of the eccentric part can still be maintained.

[0007] The technical solution adopted by the present invention to solve its technical problem is as follows: An eccentric grinding processing device of the present invention includes a machine tool body and a chuck on the left support of the machine tool body; the machine tool body is slidably connected to a right support located to the right of the chuck along a track; the chuck is used to clamp the eccentric part; a hole plate corresponding to the chuck is installed on the left side of the right support; a telescopic cylinder is fixedly connected to the upper surface of the right support; a grinding rod is horizontally fixedly connected to the upper end of the telescopic cylinder; the grinding rod extends to the left; a grinding frame is sleeved on the grinding rod; the front and rear inner width of the grinding frame is adapted to the front and rear width of the grinding rod; guide strips are provided protruding from the front and rear of the grinding rod; the grinding frame moves up and down under the guidance of the guide strips; a grinding block is connected to the lower end of the grinding frame by bolts; the upper and lower inner height of the grinding frame is greater than the upper and lower thickness of the grinding rod; multiple grinding frames can drive the grinding blocks to be staggered in the vertical direction; multiple grinding blocks are located directly above the eccentric part.

[0008] Preferably, the grinding rod has strip-shaped driven grooves on its front and rear outer walls; the length direction of the driven groove is consistent with the left and right direction; multiple guide strips are slidably and sealingly connected inside the driven groove, and adjacent guide strips are slidably and sealingly connected; a drive groove is provided inside the grinding rod; the drive groove is located directly above the telescopic cylinder; a drive plate is slidably and sealingly connected to the drive groove; a screw is rotatably connected to the upper surface of the drive plate; the upper end of the screw passes through the grinding rod and is threadedly connected to the grinding rod; the bottom of the drive groove is connected to the bottom of the driven groove through a first liquid hole.

[0009] Preferably, the guide bar is connected to the bottom of the driven groove via a first limiting rope; the cross-section of the outward end of the guide bar is triangular; and the grinding frame has triangular grooves on its vertical front and rear inner walls.

[0010] Preferably, a counterweight rod is vertically provided on the upper surface of the grinding frame; a counterweight block is sleeved on the outer wall of the counterweight rod; the counterweight groove at the center of the counterweight block is movably connected to the counterweight rod; and the cross-sections of the counterweight groove and the counterweight rod are both square.

[0011] Preferably, the upper surface of the grinding frame is provided with a rod groove; the lower end of the counterweight rod is slidably and sealed within the rod groove; the lower end of the counterweight rod is connected to the rod groove via a first tension spring; a locking groove is provided on the rear side of the counterweight rod; a locking block is slidably and sealed within the locking groove; the locking block is connected to the bottom of the locking groove via a second limiting rope; the locking groove communicates with the rod groove via a second liquid hole; and a guide surface is provided at the end of the locking block that is inclined upwards away from the bottom of the locking groove.

[0012] Preferably, a first slot and a second slot are respectively provided on the left and right sides of the front side of the grinding frame; the first slot and the second slot on adjacent grinding frames are aligned and correspond to each other; an L-shaped insert is slidably and sealingly connected in the second slot; the insert can be inserted into the first slot of the adjacent grinding frame along the second slot.

[0013] Preferably, the outer wall of the insert is provided with a spring slot; one end of an arc-shaped spring is fixedly connected in the spring slot; the inner wall of the first slot is provided with a first arc-shaped groove for the arc-shaped spring to enter; the inner wall of the second slot is provided with a second arc-shaped groove for the arc-shaped spring to enter.

[0014] Preferably, the left side of the orifice plate is provided with an insertion hole; the inner wall of the insertion hole is slidably and sealingly connected to the insertion plate; the insertion plate and the bottom of the insertion hole are connected by a spring; the arc-shaped inner wall of the insertion hole is uniformly provided with clamping grooves around the circumference; the clamping groove is slidably and sealingly connected to a clamping block; the bottom of the clamping groove and the bottom of the insertion hole are connected by a third liquid hole.

[0015] Preferably, a rotating groove is provided on the left side of the perforated plate; a turntable is rotatably connected in the rotating groove; and the insertion hole is located on the left side of the turntable.

[0016] Preferably, the turntable has an offset groove inside; the offset groove disconnects the third liquid hole; an offset block is slidably and sealingly connected inside the offset groove; one end of the offset block near the center of the turntable is connected to the offset groove via a second tension spring; the offset block has a vent hole and an offset hole through it; the offset hole is aligned with and connected to the third liquid hole when the turntable is stopped rotating.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The present invention uses the grinding block to press against the upper outer wall of the eccentric part by gravity, so that the grinding force of the grinding block on the outer circle of the eccentric part is consistent regardless of the rotation angle of the eccentric part. Thus, even when multiple outer circles of the eccentric part are ground by multiple grinding blocks at the same time, the uniformity of grinding of the outer circle of the eccentric part can be maintained.

[0019] 2. This invention unlocks the grinding frame in the left and right directions. The operator then controls the grinding frame to fit on the outer wall of the grinding rod and can adjust the position of the grinding frame in the left and right directions. This allows the position of the grinding block to be adjusted in the left and right directions to suit the grinding requirements of the eccentric parts, making the grinding position more flexible.

[0020] 3. In this invention, the force of the grinding block against the outer circle of the eccentric part is generated by the weight of the grinding block and the grinding frame. Therefore, by setting a counterweight rod on the upper surface of the grinding frame and fitting a counterweight block on the counterweight rod, the force of the grinding block against the eccentric part is increased to meet the different grinding requirements of the eccentric part grinding process. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 yes Figure 1 A stereoscopic view from another angle;

[0024] Figure 3 This is a perspective view of the grinding rod and grinding frame in this invention;

[0025] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 This is a cross-sectional view of the drive groove in this invention;

[0027] Figure 6 yes Figure 3 Sectional view at point DD;

[0028] Figure 7 yes Figure 6 Enlarged view of point B in the middle;

[0029] Figure 8 This is a perspective view of the grinding frame and counterweight block in this invention;

[0030] Figure 9 yes Figure 8 Enlarged view of point C in the middle;

[0031] Figure 10 This is a cross-sectional view of the first slot and the second slot in this invention;

[0032] Figure 11 This is a cross-sectional view of the perforated disk and the turntable in this invention;

[0033] Figure 12 This is a cross-sectional view of the staggered blocks in this invention.

[0034] In the diagram: 1. Machine tool body; 11. Rail; 2. Chuck; 3. Right support; 31. Telescopic cylinder; 4. Hole plate; 41. Insertion hole; 42. Insertion plate; 43. Spring; 44. Clamping groove; 45. Clamping block; 46. Third liquid hole; 47. Rotary groove; 48. Rotary table; 49. Offset groove; 5. Grinding rod; 51. Guide bar; 52. Drive groove; 53. Drive plate; 54. Screw; 55. First liquid hole; 56. First limit rope; 57. Grinding frame; 6. Grinding block. 61. Triangular groove; 62. Rod groove; 63. First slot; 64. Second slot; 65. First arc-shaped groove; 66. Second arc-shaped groove; 67. Counterweight rod; 78. Counterweight block; 79. Counterweight groove; 70. First tension spring; 71. Lock groove; 72. Lock block; 73. Second limiting rope; 74. Guide surface; 75. Second liquid hole; 76. Insert bar; 87. Spring groove; 88. Arc-shaped spring; 99. Offset block; 90. Second tension spring; 91. Vent hole; 92. Offset hole; 93. Detailed Implementation

[0035] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0036] like Figures 1 to 12 As shown, the present invention includes the following embodiments:

[0037] Example 1: An eccentric grinding apparatus includes a machine tool body 1 and a chuck 2 on the left support of the machine tool body 1; the machine tool body 1 is slidably connected to a right support 3 located to the right of the chuck 2 along a track 11; the chuck 2 is used to clamp eccentric parts; a hole plate 4 corresponding to the chuck 2 is installed on the left side of the right support 3; a telescopic cylinder 31 is fixedly connected to the upper surface of the right support 3; a grinding rod 5 is horizontally fixedly connected to the upper end of the telescopic cylinder 31; the grinding rod 5 extends to the left; the grinding rod A grinding frame 6 is mounted on a 5-piece set; the front and rear inner width of the grinding frame 6 is adapted to the front and rear width of the grinding rod 5; the grinding rod 5 is provided with guide strips 51 protruding from the front and rear; the grinding frame 6 moves up and down under the guidance of the guide strips 51; the lower end of the grinding frame 6 is connected to the grinding block 61 by bolts; the height of the upper and lower inner sides of the grinding frame 6 is greater than the upper and lower thickness of the grinding rod 5; multiple grinding frames 6 can drive their respective grinding blocks 61 to be staggered in the vertical direction; multiple grinding blocks 61 are located directly above the eccentric part.

[0038] Before using the device to grind the eccentric part, first select the corresponding specification of the hole plate 4 to install on the right support 3 according to the outer diameter of the end of the eccentric part. Then, insert one end of the eccentric part into the chuck 2 and clamp it with the chuck 2. Align the other end of the eccentric part with the hole plate 4. Then control the right support 3 to move to the left along the track 11. During the leftward movement of the right support 3, the hole plate 4 will move to the left. The outer diameter of the insertion hole 41 on the left side of the hole plate 4 is adapted to the outer diameter of the end of the eccentric part. In this way, the other end of the eccentric part can be inserted into the insertion hole 41 on the hole plate 4, so as to position and support the other end of the eccentric part. The leftward movement of the right support 3 will also cause the grinding rod 5 to move multiple grinding blocks 61 to directly above the eccentric part.

[0039] Subsequently, the telescopic cylinder 31 is shortened. During the shortening process, the telescopic cylinder 31 will drive the grinding rod 5 to move downward. During the downward movement of the grinding rod 5, multiple grinding frames 6 will move downward synchronously. The lower end of the grinding frame 6 is connected to the grinding block 61 by bolts. Therefore, the grinding frame 6 will drive the grinding block 61 to move downward synchronously. The grinding block 61 will contact the arc-shaped outer wall of the eccentric part. Since the outer circle on the eccentric part is eccentric, after a portion of the grinding blocks 61 abuts against some protruding outer walls of the eccentric part, that portion of the grinding blocks 61 cannot move downward further. The other grinding blocks 61 abut against other outer walls of the eccentric part as the grinding rod 5 moves downward, until all outer circles of the eccentric part are abutted by grinding blocks 61 that are evenly arranged and adjacent to each other on the left and right.

[0040] Subsequently, the machine tool body 1 drives the chuck 2 to rotate. During the rotation of the chuck 2, the clamped eccentric part will also rotate. During the rotation of the eccentric part, static friction will be generated with the grinding block 61, thereby achieving grinding of the outer wall of the eccentric part. Since the eccentric part is eccentric, the rotation of the eccentric part will drive the grinding block 61 to move up and down cyclically. The grinding block 61 will drive the grinding frame 6 to move up and down synchronously. The grinding frame 6 moves back and forth up and down under the guidance of the guide strip 51 set in the left and right directions. The grinding frame 6 will move back and forth up and down along the grinding rod 5. The difference is that the existing technology Some grinding blocks 61 use elastic elements to press against the outer wall of eccentric parts for grinding. However, this method is only suitable for grinding concentric parts. For eccentric parts, the distance from the outer circle to the center varies. Therefore, when the eccentric part protrudes significantly from the outer circle, the elastic element exerts a greater grinding force on the outer circle of the eccentric part through the grinding block 61. When the eccentric part protrudes less significantly from the outer circle, the elastic element exerts a smaller grinding force on the outer circle of the eccentric part through the grinding block 61. This will cause uneven grinding force on the outer circle of the eccentric part, ultimately affecting the uniformity of grinding the eccentric part.

[0041] The present invention utilizes the gravity of the grinding block 61 to press against the upper outer wall of the eccentric part, so that the grinding force of the grinding block 61 on the outer circle of the eccentric part is consistent regardless of the rotation angle of the eccentric part. Thus, even when multiple outer circles of the eccentric part are ground by multiple grinding blocks 61 at the same time, the uniformity of grinding of the outer circles of the eccentric part can be maintained. After the outer circle of the eccentric part is ground, the telescopic cylinder 31 is extended to move the grinding rod 5 upward. The grinding rod 5 will move multiple grinding frames 6 upward synchronously. During the upward movement of the grinding frames 6, the grinding block 61 will disengage from the outer circle of the eccentric part. Finally, the right support 3 is moved to the right to release the chuck 2 and remove the eccentric part.

[0042] Example 2: The grinding rod 5 has strip-shaped driven grooves 52 on its front and rear outer walls; the length direction of the driven grooves 52 is consistent with the left and right direction; multiple guide strips 51 are slidably and sealingly connected inside the driven grooves 52, and adjacent guide strips 51 are slidably and sealingly connected; a drive groove 53 is provided inside the grinding rod 5; the drive groove 53 is located directly above the telescopic cylinder 31; a drive plate 54 is slidably and sealingly connected inside the drive groove 53; a screw 55 is rotatably connected to the upper surface of the drive plate 54; the upper end of the screw 55 passes through the grinding rod 5 and is threadedly connected to the grinding rod 5; the bottom of the drive groove 53 is connected to the bottom of the driven grooves 52 through a first liquid hole 56.

[0043] The guide bar 51 is connected to the bottom of the driven groove 52 via the first limiting rope 57; the cross-section of the outward end of the guide bar 51 is triangular; the grinding frame 6 has triangular grooves 62 on its vertical front and rear inner walls.

[0044] After one end of the eccentric part is clamped on the chuck 2, the right support 3 is moved to the left, and the other end of the eccentric part is inserted into the insertion hole 41 on the hole plate 4. The leftward movement of the right support 3 will also cause the grinding rod 5 to move directly above the eccentric part. Then, grinding blocks 61 of different thicknesses are selected according to the axial width of the outer circle of the eccentric part so that the outer circle of the eccentric part can be ground. The operator can replace the grinding blocks 61.

[0045] The operator reverses the screw 55, causing the grinding rod 5 to move. This moves the drive plate 54 upwards inside the drive groove 53, dividing the internal space of the drive groove 53 into an upper and lower chamber. The upper chamber is connected to the outside gas, so it does not affect the up-and-down movement of the drive plate 54. During the upward movement of the drive plate 54, the space in the lower chamber increases, creating a negative pressure. The liquid medium in the driven groove 52 enters the lower chamber along the first liquid hole 56. The guide bar 51 retracts into the driven groove 52 under the negative pressure, thus unlocking the left-right movement of the grinding frame 6. Subsequently, the operator controls the grinding frame 6 to fit on the outer wall of the grinding rod 5 and can adjust the position of the grinding frame 6 in the left-right direction, thereby adjusting the position of the grinding block 61 in the left-right direction to suit the grinding requirements of eccentric parts. The position allows for greater flexibility in the grinding process. After adjusting the left and right positions of the grinding block 61 and the grinding frame 6, the screw 55 is turned forward. The screw 55, when turned, will cause the drive plate 54 to move downward. During the downward movement of the drive plate 54, the liquid medium in the lower cavity will be squeezed. The liquid medium in the lower cavity, under pressure, will flow into the driven groove 52 along the first liquid hole 56. This will cause the guide bar 51 in the driven groove 52 to be pressed out of the driven groove 52. When the guide bar 51 extends from the front and rear sides of the grinding rod 5, the guide bar 51 will be stuck on the left and right sides of the front and rear parts of the grinding frame 6, thereby enabling the grinding frame 6 to move left and right, and thus achieving the purpose of positioning the grinding frame 6 in the left and right directions. Under the left and right direction restriction of the guide bar 51, the grinding frame 6 can only move up and down under the guidance of the guide bar 51, so as to meet the requirement that the grinding block 61 moves up and down with the rotation of the eccentric part.

[0046] Furthermore, the guide bar 51 will be pulled by the first limiting rope 57 during the process of extending out of the driven groove 52, so as to prevent the guide bar 51 from disengaging from the driven groove 52. Since the grinding frame 6 has triangular grooves 62 on its vertical front and rear inner walls, the outward end of the guide bar 51 can be inserted into the triangular grooves 62, so as to further improve the stability of the left and right direction restriction of the grinding frame 6, and enable the grinding frame 6 to move up and down smoothly.

[0047] Example 3: A counterweight rod 7 is vertically provided on the upper surface of the grinding frame 6; a counterweight block 71 is sleeved on the outer wall of the counterweight rod 7; the counterweight groove 72 at the center of the counterweight block 71 is movably connected to the counterweight rod 7; the cross-section of the counterweight groove 72 and the counterweight rod 7 are both square.

[0048] The upper surface of the grinding frame 6 is provided with a rod groove 63; the lower end of the counterweight rod 7 is slidably and sealed within the rod groove 63; the lower end of the counterweight rod 7 is connected to the rod groove 63 via a first tension spring 73; a locking groove 74 is provided on the rear side of the counterweight rod 7; a locking block 75 is slidably and sealed within the locking groove 74; the locking block 75 is connected to the bottom of the locking groove 74 via a second limiting rope 76; the locking groove 74 communicates with the rod groove 63 via a second liquid hole 78; the end of the locking block 75 away from the bottom of the locking groove 74 is provided with a guide surface 77 that is inclined upwards.

[0049] In the grinding process of eccentric parts, the force of the grinding block 61 against the outer circle of the eccentric part directly affects the grinding efficiency. The force of the grinding block 61 against the outer circle of the eccentric part is generated by the weight of the grinding block 61 and the grinding frame 6. Therefore, by setting a counterweight rod 7 on the upper surface of the grinding frame 6 and fitting a counterweight block 71 on the counterweight rod 7, the force of the grinding block 61 against the eccentric part is increased to meet the different grinding requirements of eccentric parts grinding.

[0050] Furthermore, to prevent the counterweight 71 from shifting relative to the grinding block 61 as it moves up and down, a locking block 75 is provided on the rear side of the counterweight rod 7. When counterweighting is required, the counterweight groove 72 of the counterweight 71 is aligned with the upper end of the counterweight rod 7, and then the counterweight 71 is fitted onto the outer wall of the counterweight rod 7. As the counterweight 71 moves down, it will cause the lower end of the counterweight groove 72 to press against the guide surface 77 on the locking block 75, thereby causing the locking block 75 to be compressed back into the locking block 75 under pressure, overcoming the liquid compression in the locking groove 74. The liquid in the locking groove 74 is squeezed by the locking block 75 and flows into the rod groove 63 along the second liquid hole 78. As the liquid in the rod groove 63 increases, it drives the counterweight rod 7 to move up, thus successfully completing the assembly process of multiple counterweights 71.

[0051] After the counterweight 71 moves down along the outer wall of the counterweight rod 7, it will move away from the corresponding locking groove 74. The first tension spring 73 gives the counterweight rod 7 a downward force, thereby squeezing the liquid in the rod groove 63 into the locking groove 74 through the second liquid hole 78, and then pushing the locking block 75, which is not blocked by the counterweight 71, to extend out of the locking groove 74. The second limiting rope 76 in the locking groove 74 serves to prevent the locking block 75 from falling off and to limit its movement. The locking block 75 extending out of the locking groove 74 can lock the counterweight 71 mounted on the counterweight rod 7, so that the counterweight 71 can move synchronously with the up and down movement of the grinding frame 6, avoiding the situation where the counterweight 71 falls off, and making the grinding process more stable.

[0052] Example 4: The grinding frame 6 is provided with a first slot 64 and a second slot 65 on the left and right sides of the front side respectively; the first slot 64 and the second slot 65 on adjacent grinding frames 6 are aligned and correspond to each other; an L-shaped insert 8 is slidably and sealingly connected in the second slot 65; the insert 8 can be inserted into the first slot 64 of the adjacent grinding frame 6 along the second slot 65.

[0053] The outer wall of the insert 8 is provided with a spring slot 81; one end of the arc-shaped spring 82 is fixedly connected in the spring slot 81; the inner wall of the first slot 64 is provided with a first arc-shaped groove 66 for the arc-shaped spring 82 to enter; the inner wall of the second slot 65 is provided with a second arc-shaped groove 67 for the arc-shaped spring 82 to enter.

[0054] The adjacent grinding frames 6 in the left and right directions can selectively move up and down independently, or they can move up and down in combination. If the adjacent grinding blocks 61 are against the same height outer circle of the eccentric part, the L-shaped insert 8 can be moved into the first slot 64 of the adjacent grinding frames 6, so that the grinding blocks 61 against the same height outer circle can move up and down synchronously to ensure the uniformity of grinding the outer circle of the eccentric part. If the adjacent grinding blocks 61 are against the outer circles of the eccentric part at different heights, the insert 8 is kept in the second slot 65 where it slides, so that the grinding blocks 61 against the outer circles at different heights can move up and down on their own to meet the different requirements. To meet the grinding requirements of the outer diameter, after the insert 8 is inserted into the first slot 64 on the adjacent grinding frame 6, the spring slot 81 on the insert 8 aligns with the first arc-shaped slot 66, so that the arc-shaped spring 82 in the spring slot 81 enters the first arc-shaped slot 66 under the action of elastic force, realizing the engagement of the insert 8 with the corresponding first slot 64, and improving the stability of the connection between the adjacent grinding frames 6; while the insert 8 located in the second slot 65, the spring slot 81 on the insert 8 aligns with the second arc-shaped slot 67, and the arc-shaped spring 82 is engaged in the second arc-shaped slot 67 under its own elastic force, so that the insert 8 will not shift in the second arc-shaped slot 67, making the separation state of the adjacent grinding frames 6 more stable.

[0055] Example 5: An insertion hole 41 is provided on the left side of the perforated plate 4; the inner wall of the insertion hole 41 is slidably and sealingly connected to the insertion plate 42; the insertion plate 42 and the bottom of the insertion hole 41 are connected by a spring 43; the arc-shaped inner wall of the insertion hole 41 is uniformly provided with clamping grooves 44 around the circumference; the clamping grooves 44 are slidably and sealingly connected to clamping blocks 45; the bottom of the clamping grooves 44 and the bottom of the insertion hole 41 are connected by a third liquid hole 46.

[0056] A rotating groove 47 is provided on the left side of the perforated plate 4; a turntable 48 is rotatably connected in the rotating groove 47; and an insertion hole 41 is provided on the left side of the turntable 48.

[0057] After the left end of the eccentric part is clamped by the chuck 2, the right support 3 is moved to the left. During the leftward movement of the right support 3, the hole plate 4 will move to the left, and the hole plate 4 will move to the left, which will in turn move the turntable 48 to the left. The insertion hole 41 on the left side of the turntable 48 is aligned with the right end of the eccentric part. The right end of the eccentric part will enter the insertion hole 41 and squeeze the insertion plate 42. As the insertion plate 42 approaches the bottom of the insertion hole 41, it will overcome the elastic force of the spring 43 and squeeze the liquid in the insertion hole 41 to flow into the clamping groove 44 along the third liquid hole 46. The clamping block 45 in the clamping groove 44 is pressed out and abuts against the outer wall of the right end of the eccentric part, realizing the clamping and support of the right end of the eccentric part with different outer diameters. During the rotation of the eccentric part, the eccentric part will drive the clamping block 45 and the turntable 48 to rotate. The turntable 48 will rotate in the rotating groove 47 to ensure the dual requirements of clamping and rotating the right end of the eccentric part.

[0058] Example 6: The turntable 48 is provided with a staggered groove 49 inside; the staggered groove 49 disconnects the third liquid hole 46; a staggered block 9 is slidably and sealingly connected inside the staggered groove 49; the staggered block 9 is connected to the staggered groove 49 at one end near the center of the turntable 48 through a second tension spring 91; the staggered block 9 is provided with a vent hole 92 and a staggered hole 93 through it; the staggered hole 93 is aligned with and connected to the third liquid hole 46 when the turntable 48 is not rotating.

[0059] Before the turntable 48 rotates, the right end of the eccentric part will squeeze the liquid in the insertion plate 42 and the insertion hole 41, so that the liquid can flow smoothly along the third liquid hole 46 and the staggered hole 93 and enter the clamping groove 44, completing the rotation process of the eccentric part. Then, as the turntable 48 rotates with the eccentric part, it will drive the staggered block 9 to generate centrifugal force. Under the action of centrifugal force, the staggered block 9 will drive the staggered hole 93 to disconnect from the third liquid hole 46, realizing the closure of the clamping groove 44, so that the liquid in the clamping groove 44 cannot flow out, thus locking the clamping block 45. This improves the support and clamping stability of the right end of the eccentric part. More importantly, all the clamping grooves 44 are independently sealed to ensure the centered clamping of the right end of the eccentric part.

[0060] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An eccentric grinding apparatus, comprising a machine tool body and a chuck on the left support of the machine tool body; the machine tool body is slidably connected along a track to a right support located to the right of the chuck; the chuck is used to clamp eccentric parts; characterized in that: A hole plate corresponding to the chuck is installed on the left side of the right support; a telescopic cylinder is fixedly connected to the upper surface of the right support; a grinding rod is horizontally fixedly connected to the upper end of the telescopic cylinder; the grinding rod extends to the left; a grinding frame is fitted onto the grinding rod; the front and rear inner width of the grinding frame is adapted to the front and rear width of the grinding rod; guide strips are provided on the front and rear protruding parts of the grinding rod; the grinding frame moves up and down under the guidance of the guide strips; a grinding block is connected to the lower end of the grinding frame by bolts; the height of the upper and lower inner sides of the grinding frame is greater than the upper and lower thickness of the grinding rod; multiple grinding frames can drive the grinding blocks to be staggered in the vertical direction; multiple grinding blocks are located directly above the eccentric part. The grinding rod has strip-shaped driven grooves on its front and rear outer walls; the length direction of the driven groove is consistent with the left and right direction; multiple guide strips are slidably and sealingly connected inside the driven groove, and adjacent guide strips are slidably and sealingly connected; a drive groove is provided inside the grinding rod; the drive groove is located directly above the telescopic cylinder; a drive plate is slidably and sealingly connected to the drive groove; a screw is rotatably connected to the upper surface of the drive plate; the upper end of the screw passes through the grinding rod and is threadedly connected to the grinding rod; the bottom of the drive groove is connected to the bottom of the driven groove through a first liquid hole; The guide bar is connected to the bottom of the driven groove via a first limiting rope; the cross-section of the outward end of the guide bar is triangular; the grinding frame has triangular grooves on its vertical front and rear inner walls; A counterweight rod is vertically provided on the upper surface of the grinding frame; a counterweight block is sleeved on the outer wall of the counterweight rod; the counterweight groove at the center of the counterweight block is movably connected to the counterweight rod; both the counterweight groove and the counterweight rod have square cross-sections. The upper surface of the grinding frame is provided with a rod groove; the lower end of the counterweight rod is slidably and sealed within the rod groove; the lower end of the counterweight rod is connected to the rod groove via a first tension spring; a locking groove is provided on the rear side of the counterweight rod; a locking block is slidably and sealed within the locking groove; the locking block is connected to the bottom of the locking groove via a second limiting rope; the locking groove communicates with the rod groove via a second liquid hole; the end of the locking block away from the bottom of the locking groove is provided with a guide surface that is inclined upwards.

2. The eccentric grinding apparatus according to claim 1, characterized in that: The grinding frame has a first slot and a second slot on the left and right sides of its front side, respectively; the first slot and the second slot on adjacent grinding frames are aligned and correspond to each other; an L-shaped insert is slidably and sealingly connected in the second slot; the insert can be inserted into the first slot of the adjacent grinding frame along the second slot.

3. The eccentric grinding apparatus according to claim 2, characterized in that: The outer wall of the insert is provided with a spring slot; one end of an arc-shaped spring is fixedly connected in the spring slot; the inner wall of the first slot is provided with a first arc-shaped groove for the arc-shaped spring to enter; the inner wall of the second slot is provided with a second arc-shaped groove for the arc-shaped spring to enter.

4. The eccentric grinding apparatus according to claim 1, characterized in that: The left side of the orifice plate is provided with an insertion hole; the inner wall of the insertion hole is slidably and sealed to the insertion plate; the insertion plate and the bottom of the insertion hole are connected by a spring; the arc-shaped inner wall of the insertion hole is uniformly provided with clamping grooves around the circumference; the clamping groove is slidably and sealed to a clamping block; the bottom of the clamping groove and the bottom of the insertion hole are connected by a third liquid hole.

5. The eccentric grinding apparatus according to claim 4, characterized in that: A rotating groove is provided on the left side of the perforated plate; a turntable is rotatably connected in the rotating groove; the insertion hole is located on the left side of the turntable.

6. The eccentric grinding apparatus according to claim 5, characterized in that: The turntable has an internal offset groove that disconnects the third liquid hole. An offset block is slidably and sealingly connected inside the offset groove. The offset block is connected to the offset groove via a second tension spring at one end near the center of the turntable. The offset block has a vent hole and an offset hole through it. The offset hole is aligned with and connected to the third liquid hole when the turntable is stopped rotating.

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