Eccentric grinding machining device

Abstract

The invention relates to the technical field of grinding machining, in particular to an eccentric grinding machining device. Comprising a machine tool body and a chuck on a left support of the machine tool body. The machine tool body is slidably connected with a right support located on the right side of the chuck along the rail. The chuck is used for clamping an eccentric part; a hole disc corresponding to the chuck is mounted on the left side of the right support; the upper surface of the right support is fixedly connected with a telescopic cylinder; the upper end of the telescopic cylinder is transversely and fixedly connected with a grinding rod; the grinding rod extends leftwards; the grinding rod is sleeved with a grinding frame; the grinding blocks abut against the upper outer wall of the eccentric part through gravity, so that under the condition that the eccentric part rotates by any angle, the grinding force of the grinding blocks on the outer circles of the eccentric part is consistent, and under the condition that the multiple outer circles of the eccentric part are ground by the multiple grinding blocks at the same time, the grinding efficiency of the eccentric part is improved. And the grinding uniformity of the outer circle of the eccentric part can be kept.

Description

Technical Field

[0001] The invention relates to the technical field of grinding processing, in particular to an eccentric grinding processing device. Background Art

[0002] Eccentric grinding is a specialized grinding process for eccentric parts—machine parts whose rotational center is not aligned with the center of their outer diameter. Typical applications include crankshafts in automotive engines (where the connecting rod journal center is offset from the main journal center) and eccentric shafts in various mechanical transmissions (such as pumps and compressors, which are core components for eccentric motion transmission).

[0003] The core requirement of this type of machining is to precisely control the relative position of the part and the grinding wheel, ensuring that the center of the machined surface forms a predetermined offset (i.e., "eccentricity") from the part's center of rotation, thereby achieving an eccentric structure that meets design requirements. During the specific machining process, taking crankshaft machining as an example, specialized equipment is required to accurately position the eccentric journal to be ground. This ensures that the grinding wheel precisely controls the eccentricity between the journal center and the spindle center during the grinding process, thereby meeting the functional requirement of the eccentric structure driving the piston movement during engine operation.

[0004] At present, eccentric grinding mainly relies on special equipment such as CNC follow-up eccentric shaft grinders and eccentric grinding CNC processing machines. Its technical principle is to accurately control the relative movement of 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, ensuring that the grinding head always maintains an adaptive position and angle with the workpiece surface to be processed during the grinding process, thereby achieving high-precision processing of the eccentric shaft.

[0005] However, for parts with multiple eccentric outer circles, each eccentric outer circle typically needs to be ground sequentially. Because different eccentric outer circles often have different eccentricity parameters and phase angle requirements, parameter calibration and phase adjustment must be performed again each time the processing part is switched. This results in a high proportion of non-grinding auxiliary time, which restricts processing efficiency. Summary of the Invention

[0006] In order to make up for the shortcomings of the existing technology, the present invention proposes an eccentric grinding processing device. The present invention uses gravity to press the grinding block against the upper outer wall of the eccentric part, so that no matter what angle the eccentric part rotates, the grinding force of the grinding block on the outer circle of the eccentric part is consistent. In this way, when multiple outer circles of the eccentric part are ground by multiple grinding blocks at the same time, the uniformity of the outer circle grinding of the eccentric part can also be maintained.

[0007] The technical solution adopted by the present invention to solve its technical problems is: an eccentric grinding processing device described in the present invention comprises a machine tool body and a chuck on the left support of the machine tool body; the machine tool body is slidably connected to the right support located on the right side of the chuck along a track; the chuck is used to clamp the eccentric part; a hole disk corresponding to the chuck is installed on the left side of the right support; the upper surface of the right support is fixedly connected to the telescopic cylinder; the upper end of the telescopic cylinder is laterally fixedly connected to the grinding rod; the grinding rod extends to the left; the grinding rod is sleeved with a grinding frame; the front and rear inner widths of the grinding frame are adapted to the front and rear widths of the grinding rod; the grinding rod is protruded with guide strips at the front and rear; the grinding frame moves up and down under the guidance of the guide strip; the lower end of the grinding frame is connected to the grinding block by bolts; the upper and lower inner heights of the grinding frame are greater than the upper and lower thicknesses 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 front and rear outer walls of the grinding rod are provided with strip-shaped driven grooves; the length direction of the driven groove is consistent with the left and right direction; a plurality of guide bars are connected in a sliding seal in the driven groove, and adjacent guide bars are connected in a sliding seal; a driving groove is provided inside the grinding rod; the driving groove is located directly above the telescopic cylinder; the driving plate is connected in an upper and lower sliding seal in the driving groove; the upper surface of the driving plate is rotatably connected to the screw; the upper end of the screw passes through the grinding rod and is threadedly connected to the grinding rod; the bottom of the driving groove is connected through the bottom of the driven groove through the first liquid hole.

[0009] Preferably, the guide bar is connected to the bottom of the driven groove through a first limiting rope; the cross section of the outward end of the guide bar is triangular; and the vertical front and rear inner walls of the grinding frame are provided with triangular grooves.

[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; a counterweight groove in the center of the counterweight block is movably connected to the counterweight rod up and down; and the cross sections of the counterweight groove and the counterweight rod are both square.

[0011] Preferably, a rod groove is provided on the upper surface of the grinding frame; the counterweight rod is slidingly and sealedly connected to the rod groove at the lower end; the counterweight rod is connected to the rod groove by a first tension spring at the lower end; a lock groove is provided on the rear side of the counterweight rod; a lock block is slidingly and sealably connected to the lock groove; the lock block is connected to the bottom of the lock groove through a second limiting rope; the lock groove is connected to the rod groove through a second liquid hole; a guide surface is provided on the end of the lock block away from the bottom of the lock groove and inclined upward.

[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 the adjacent grinding frame are aligned and correspond to each other; an L-shaped insertion strip is sealed and connected in a sliding manner to the left and right in the second slot; the insertion strip 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 clip groove; one end of the arc-shaped spring clip is fixedly connected in the spring clip groove; the inner wall of the first slot is provided with a first arc-shaped groove for the arc-shaped spring clip to enter; the inner wall of the second slot is provided with a second arc-shaped groove for the arc-shaped spring clip to enter.

[0014] Preferably, a socket is provided on the left side of the orifice plate; the inner wall of the socket is slidingly sealed and connected to the socket plate; the socket plate and the bottom of the socket are connected by a spring; the arc-shaped inner wall of the socket is evenly provided with clamping grooves around the circumference; the clamping groove is slidingly sealed and connected to the clamping block; the bottom of the clamping groove and the bottom of the socket are connected through a third liquid hole.

[0015] Preferably, a rotating groove is provided on the left side of the orifice plate; the rotating groove is rotatably connected to the turntable; and the jack is provided on the left side of the turntable.

[0016] Preferably, a staggered groove is provided inside the turntable; the staggered groove disconnects the third liquid hole; the sliding seal in the staggered groove is connected to the staggered block; the end of the staggered block close to the center of the turntable is connected to the staggered groove through a second tension spring; the staggered block is penetrated by air holes and staggered holes; the staggered holes are aligned with and connected to the third liquid hole when the turntable stops rotating.

[0017] The beneficial effects of the present invention are as follows: 1. The present invention uses gravity to press the grinding block against the upper outer wall of the eccentric part. Therefore, no matter what angle the eccentric part rotates, the grinding force of the grinding block on the outer circle of the eccentric part is consistent. In this way, when multiple outer circles of the eccentric part are ground by multiple grinding blocks at the same time, the uniformity of the outer circle grinding of the eccentric part can be maintained.

[0018] 2. The present invention realizes unlocking of the left and right movement of the grinding frame. Then the operator controls the grinding frame to be sleeved on the outer wall of the grinding rod and can adjust the position of the grinding frame in the left and right directions, so that the position of the grinding block can be adjusted in the left and right directions to adapt to the position where the eccentric part needs to be ground according to the grinding requirements, making the grinding position more flexible.

[0019] 3. In the present invention, the force of the grinding block against the outer circle of the eccentric part is generated by the gravity of the grinding block and the grinding frame. Therefore, a counterweight rod is provided on the upper surface of the grinding frame, and a counterweight block is mounted on the counterweight rod to increase the force of the grinding block against the eccentric part, so as to meet the different grinding requirements of the eccentric part grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 is a perspective view of the present invention; Figure 2 yes Figure 1 A three-dimensional image from another angle; Figure 3 is a perspective view of the grinding rod and the grinding frame of the present invention; Figure 4 yes Figure 3 Enlarged view of point A in the middle; Figure 5 is a cross-sectional view of the driving groove of the present invention; Figure 6 yes Figure 3 Cross-sectional view at DD in the middle; Figure 7 yes Figure 6 Enlarged view of point B in the middle; Figure 8 It is a three-dimensional diagram of the grinding frame and the counterweight block in the present invention; Figure 9 yes Figure 8 Enlarged view of point C in the middle; Figure 10 is a cross-sectional view of the first slot and the second slot in the present invention; Figure 11 is a cross-sectional view of the orifice plate and the rotary plate of the present invention; Figure 12 It is a cross-sectional view of the staggered block in the present invention.

[0022] In the figure: machine tool body 1, track 11, chuck 2, right support 3, telescopic cylinder 31, hole plate 4, socket 41, plug plate 42, spring 43, clamping groove 44, clamping block 45, third fluid hole 46, rotating groove 47, rotating plate 48, staggered groove 49, grinding rod 5, guide bar 51, driven groove 52, driving groove 53, driving plate 54, screw 55, first fluid 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 arcuate groove 66, second arcuate groove 67, counterweight rod 7, counterweight block 71, counterweight groove 72, first tension spring 73, lock groove 74, lock block 75, second limiting rope 76, guide surface 77, second liquid hole 78, insertion strip 8, spring clip groove 81, arcuate spring clip 82, staggered block 9, second tension spring 91, air vent 92, staggered hole 93. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figures 1 to 12 As shown, the present invention includes the following embodiments: Example 1: An eccentric grinding device, comprising 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 on the right side 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; the upper surface of the right support 3 is fixedly connected to a telescopic cylinder 31; the upper end of the telescopic cylinder 31 is laterally fixedly connected to a grinding rod 5; the grinding rod 5 extends to the left; the grinding rod 5 is provided with a grinding frame 6; the front and rear inner widths of the grinding frame 6 are adapted to the front and rear widths of the grinding rod 5; the grinding rod 5 is provided with guide bars 51 protruding from the front and rear; the grinding frame 6 moves up and down under the guidance of the guide bars 51; the lower end of the grinding frame 6 is connected to the grinding block 61 by bolts; the upper and lower inner heights of the grinding frame 6 are greater than the upper and lower thicknesses of the grinding rod 5; multiple grinding frames 6 can drive their respective grinding blocks 61 to stagger in the vertical direction; multiple grinding blocks 61 are located directly above the eccentric part.

[0025] Before using the device to grind the eccentric part, first choose to install a hole plate 4 of corresponding specifications 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 be clamped by the chuck 2, and align the other end of the eccentric part with the hole plate 4, and then control the right support 3 to move left along the track 11. During the left movement of the right support 3, the hole plate 4 will be driven to move left, and the outer diameter of the socket 41 on the left side of the hole plate 4 is adapted to the outer diameter of the end of the eccentric part, so that the other end of the eccentric part can be inserted into the socket 41 on the hole plate 4, so as to realize the positioning and support of the other end of the eccentric part. The left movement of the right support 3 will also cause the grinding rod 5 to drive multiple grinding blocks 61 to move to the top of the eccentric part.

[0026] Then the telescopic cylinder 31 is controlled to shorten. During the shortening process of the telescopic cylinder 31, the grinding rod 5 will be driven to move downward. During the downward movement of the grinding rod 5, multiple grinding frames 6 will be driven to move downward synchronously. The lower end of the grinding frame 6 is connected to the grinding block 61 by a bolt, so 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 some of the grinding blocks 61 abut against some protruding outer walls of the eccentric part, this part of the grinding block 61 cannot continue to move downward, while the other grinding blocks 61 abut against other outer walls of the eccentric part as the grinding rod 5 moves downward, until all the axial outer circles of the eccentric part are abutted by the grinding blocks 61 that are evenly and adjacently arranged on the left and right.

[0027] Then, the chuck 2 is driven to rotate by the machine tool body 1, and the rotation of the chuck 2 will drive the clamped eccentric part to rotate. During the rotation of the eccentric part, static friction will be generated with the grinding block 61, thereby realizing the grinding of the outer wall of the eccentric part. Since the eccentric part is eccentric, the grinding block 61 will be driven to move up and down cyclically during the rotation of the eccentric part, and the grinding block 61 will drive the grinding frame 6 to move up and down synchronously. The grinding frame 6 moves up and down under the guidance of the guide strips 51 set in the left and right directions, and the grinding frame 6 moves up and down along the grinding rod 5. The difference is that the existing technology There are some grinding blocks 61 in the art that utilize elastic parts to press against the outer wall of the eccentric part for grinding, but this method is only applicable to the grinding of concentric parts. For eccentric parts, the distance from the outer circle to the center is variable. Therefore, when the eccentric part protrudes from the outer circle to a greater extent, the elastic part grinds the outer circle of the eccentric part with a greater force through the grinding block 61. When the eccentric part protrudes from the outer circle to a lesser extent, the elastic part grinds the outer circle of the eccentric part with a lesser force through the grinding block 61. This will cause uneven grinding force on the outer circle of the eccentric part, and ultimately affect the uniformity of the grinding of the eccentric part.

[0028] The present invention uses gravity to press the grinding block 61 against the upper outer wall of the eccentric part, so that no matter what angle the eccentric part rotates, the grinding force of the grinding block 61 on the outer circle of the eccentric part is consistent. In this way, when multiple outer circles of the eccentric part are ground by multiple grinding blocks 61 at the same time, the uniformity of the grinding of the outer circle of the eccentric part can be maintained; after the outer circle of the eccentric part is ground, the telescopic cylinder 31 is controlled to extend to drive the grinding rod 5 to move upward, and the grinding rod 5 will drive multiple grinding frames 6 to move upward synchronously. During the upward movement of the grinding frame 6, the grinding block 61 will be driven to break away from the contact with the outer circle of the eccentric part, and finally the right support 3 is controlled to move right, and the chuck 2 is released to remove the eccentric part.

[0029] Example 2: The front and rear outer walls of the grinding rod 5 are provided with strip-shaped driven grooves 52; the length direction of the driven groove 52 is consistent with the left and right direction; a plurality of guide bars 51 are connected in a sliding seal in the driven groove 52, and adjacent guide bars 51 are connected in a sliding seal; a driving groove 53 is provided inside the grinding rod 5; the driving groove 53 is located directly above the telescopic cylinder 31; the driving plate 54 is connected in an upward and downward sliding seal in the driving groove 53; the upper surface of the driving plate 54 is rotatably connected to the screw 55; 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 driving groove 53 is connected through the bottom of the driven groove 52 through the first liquid hole 56.

[0030] The guide bar 51 is connected to the bottom of the driven groove 52 through a first limiting rope 57; the cross section of the outward end of the guide bar 51 is triangular; the vertical front and rear inner walls of the grinding frame 6 are provided with triangular grooves 62.

[0031] After one end of the eccentric part is clamped on the chuck 2, the right support 3 is controlled to move left, and the other end of the eccentric part is inserted into the socket 41 on the hole plate 4. The left movement of the right support 3 will also move the grinding rod 5 to the top of 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 block 61.

[0032] The operator turns the screw 55 in the opposite direction. When the screw 55 is turned, the grinding rod 5 moves, so that the driving plate 54 moves upward on the inner side of the driving groove 53. The driving plate 54 divides the internal space of the driving groove 53 into an upper chamber and a lower chamber. The upper chamber is connected to the external air, so it will not affect the up and down movement of the driving plate 54. During the upward movement of the driving plate 54, the space in the lower chamber becomes larger to form 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 action of the negative pressure, thereby unlocking the left and right movement of the grinding frame 6. Then the operator controls the grinding frame 6 to be sleeved on the outer wall of the grinding rod 5, and can adjust the position of the grinding frame 6 in the left and right directions, so that the position of the grinding block 61 can be adjusted in the left and right directions to adapt to the grinding of eccentric parts according to grinding requirements. The position makes the grinding position more flexible; after completing the left and right position adjustment of the grinding block 61 and the grinding frame 6, the screw 55 is turned forward. After the screw 55 is turned, the driving plate 54 is driven to move downward. During the downward movement of the driving plate 54, the liquid medium in the lower chamber is squeezed. The liquid medium in the lower chamber is pressurized and flows into the driven groove 52 along the first liquid hole 56, so that the guide bar 51 in the driven groove 52 is pressed and extends out of the driven groove 52. When the guide bar 51 is extended from the front and rear sides of the grinding rod 5, the guide bar 51 is stuck on the left and right sides of the front and rear parts of the grinding frame 6, thereby realizing the left and right movement of the grinding frame 6, and then achieving the purpose of left and right positioning of the grinding frame 6. 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 as the eccentric part rotates.

[0033] 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 to prevent the guide bar 51 from detaching from the driven groove 52. Since the vertical front and rear inner walls of the grinding frame 6 are provided with triangular grooves 62, the outward end of the guide bar 51 can be stuck in the triangular groove 62 to further improve the stability of the left and right direction restrictions of the grinding frame 6, so that the grinding frame 6 can move up and down smoothly.

[0034] 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; a counterweight groove 72 in the center of the counterweight block 71 is movably connected to the counterweight rod 7 up and down; the cross-sections of the counterweight groove 72 and the counterweight rod 7 are both square.

[0035] A rod groove 63 is provided on the upper surface of the grinding frame 6; the counterweight rod 7 is slidingly and sealedly connected to the rod groove 63 at its lower end; the counterweight rod 7 is connected to the rod groove 63 at its lower end through a first tension spring 73; a lock groove 74 is provided on the rear side of the counterweight rod 7; a lock block 75 is slidingly and sealably connected to the lock groove 74; the lock block 75 is connected to the bottom of the lock groove 74 through a second limiting rope 76; the lock groove 74 is connected to the rod groove 63 through a second liquid hole 78; the lock block 75 is provided with a guide surface 77 at one end away from the bottom of the lock groove 74 and tilted upward.

[0036] During 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, and the force of the grinding block 61 against the outer circle of the eccentric part is generated by the gravity of the grinding block 61 and the grinding frame 6. Therefore, a counterweight rod 7 is provided on the upper surface of the grinding frame 6, and a counterweight block 71 is mounted on the counterweight rod 7 to increase the force of the grinding block 61 against the eccentric part to meet the different grinding requirements of the eccentric part grinding process.

[0037] When the cam 72 is in the unlock position, the locking block 75 is in the unlock position, and the locking block 75 is in the unlock position, so that the cam 72 can be unlocked and the locking block 75 is unlocked.

[0038] When the locking cam 75 is in the unlocking state, the locking cam 76 can be locked directly, so that the locking cam 76 can be locked in the unlocking state, and the locking cam 76 can be locked in the unlocking state, so that the locking cam 76 can be locked in the unlocking state, and the locking cam 76 can be locked in the unlocking state, so that the locking cam 76 can be locked in the unlocking state, and the locking cam 76 can be locked in the unlocking state, so that the locking cam 76 can be locked in the unlocking state, and the locking cam 76 can be locked in the unlocking state, so that the locking cam 76 can be locked in the unlocking state, and the locking cam 76 can be locked in the unlocking state, so that the locking cam 76 can be locked in the unlocking state,

[0039] Embodiment 4: A first slot 64 and a second slot 65 are respectively provided on the left and right sides of the front side of the grinding frame 6; the first slot 64 and the second slot 65 on adjacent grinding frames 6 are aligned and correspond to each other; an L-shaped insertion strip 8 is sealed and connected in a sliding manner to the left and right inside the second slot 65; the insertion strip 8 can be inserted into the first slot 64 of the adjacent grinding frame 6 along the second slot 65.

[0040] The outer wall of the insert 8 is provided with a spring slot 81; one end of the arc-shaped spring piece 82 is fixedly connected to the spring slot 81; the inner wall of the first slot 64 is provided with a first arc-shaped slot 66 for the arc-shaped spring piece 82 to enter; the inner wall of the second slot 65 is provided with a second arc-shaped slot 67 for the arc-shaped spring piece 82 to enter.

[0041] The adjacent grinding frames 6 in the left and right directions can selectively move up and down independently of each other, or can move up and down in combination. If the adjacent grinding blocks 61 on the left and right sides are against the outer circle of the eccentric part at the same height, the L-shaped inserting strip 8 can be toggled to insert into the first slot 64 of the adjacent grinding frame 6, so that the grinding blocks 61 abutting on the outer circle of the same height can move up and down synchronously to ensure the uniformity of the outer circle grinding of the eccentric part. If the adjacent grinding blocks 61 on the left and right sides are against the outer circles of the eccentric part at different heights, the inserting strip 8 is kept in the second sliding slot 65 of itself, so that the grinding blocks 61 abutting on the outer circles of different heights can move up and down by themselves to meet the requirements of different grinding heights. The same outer circle grinding processing requirements; further, after the inserting strip 8 is inserted into the first slot 64 on the adjacent grinding frame 6, the spring clip groove 81 on the inserting strip 8 is aligned with the first arc groove 66, so that the arc spring piece 82 in the spring clip groove 81 enters the first arc groove 66 under the action of elastic force, thereby realizing the engagement between the inserting strip 8 and the corresponding first slot 64, thereby improving the stability of the connection between the adjacent grinding frames 6; and the inserting strip 8 located in the second slot 65, the spring clip groove 81 on the inserting strip 8 is aligned with the second arc groove 67, and the arc spring piece 82 is engaged in the second arc groove 67 under the action of its own elastic force, so that the inserting strip 8 is located in the second arc groove 67 and will not shift, so that the separation state of the adjacent grinding frames 6 is more stable.

[0042] Example 5: A socket 41 is provided on the left side of the orifice plate 4; the inner wall of the socket 41 is slidingly sealed and connected to the insert plate 42; the insert plate 42 and the bottom of the socket 41 are connected by a spring 43; the arc-shaped inner wall of the socket 41 is evenly provided with clamping grooves 44 around the circumference; the clamping groove 44 is slidingly sealed and connected to the clamping block 45; the bottom of the clamping groove 44 and the bottom of the socket 41 are connected through a third liquid hole 46.

[0043] A rotation groove 47 is provided on the left side of the orifice plate 4 ; a rotation disk 48 is rotatably connected in the rotation groove 47 ; and the insertion hole 41 is provided on the left side of the rotation disk 48 .

[0044] When the left end of the eccentric part is clamped by the chuck 2, the right support 3 is controlled to move left. During the left movement of the right support 3, the hole plate 4 is driven to move left. During the left movement of the hole plate 4, the turntable 48 is driven to move left. The socket 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 enters the socket 41 and squeezes the insert disk 42. When the insert disk 42 approaches the bottom of the socket 41, it overcomes the elastic force of the spring 43 and squeezes the liquid in the socket 41 along the third liquid hole 46 to flow into the clamping groove 44. The clamping block 45 in the clamping groove 44 is pressed out and rests against the outer wall of the right end of the eccentric part, realizing clamping and support of different outer diameters of the right end of the eccentric part. During the rotation of the eccentric part, the eccentric part will drive the clamping block 45 and the turntable 48 to rotate, and the turntable 48 will rotate in the rotating groove 47 to ensure the dual needs of clamping and rotation of the right end of the eccentric part.

[0045] Example 6: A staggered groove 49 is provided inside the turntable 48; the staggered groove 49 disconnects the third liquid hole 46; the staggered groove 49 is slidingly sealed and connected to the staggered block 9; the staggered block 9 is connected to the staggered groove 49 at one end close to the center of the turntable 48 through a second tension spring 91; the staggered block 9 is penetrated by a vent hole 92 and a staggered hole 93; the staggered hole 93 is aligned with and connected to the third liquid hole 46 when the turntable 48 stops rotating.

[0046] Before the turntable 48 rotates, the right end of the eccentric part will squeeze the insert disk 42 to squeeze the liquid in the insert 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. Subsequently, 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 be disconnected from the third liquid hole 46, thereby closing the clamping groove 44 and preventing the liquid in the clamping groove 44 from flowing out, thereby locking the clamping block 45. In this way, the support and clamping stability of the right end of the eccentric part are improved; more importantly, all the clamping grooves 44 are independently sealed to ensure the centered clamping of the right end of the eccentric part.

[0047] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood 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 cannot be understood as indicating or implying relative importance.

[0048] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An eccentric grinding device comprising a machine tool body and a chuck on a 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 an eccentric part; and characterized in that: A hole disk corresponding to the chuck is installed on the left side of the right support; the upper surface of the right support is fixedly connected to the telescopic cylinder; the upper end of the telescopic cylinder is laterally fixedly connected to the grinding rod; the grinding rod extends to the left; the grinding rod is sleeved with a grinding frame; the front and rear inner widths of the grinding frame are adapted to the front and rear widths of the grinding rod; the grinding rod is protruded with guide strips at the front and rear; the grinding frame moves up and down under the guidance of the guide strips; the lower end of the grinding frame is connected to the grinding block by bolts; the upper and lower inner heights of the grinding frame are greater than the upper and lower thicknesses 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.

2. The eccentric grinding device according to claim 1, characterized in that: The front and rear outer walls of the grinding rod are provided with strip-shaped driven grooves; the length direction of the driven groove is consistent with the left and right direction; a plurality of guide bars are connected in a sliding seal in the driven groove, and adjacent guide bars are connected in a sliding seal; a driving groove is provided inside the grinding rod; the driving groove is located directly above the telescopic cylinder; the driving plate is connected in an upper and lower sliding seal in the driving groove; the upper surface of the driving plate is rotatably connected to the screw; the upper end of the screw passes through the grinding rod and is threadedly connected to the grinding rod; the bottom of the driving groove is connected through the bottom of the driven groove through the first liquid hole.

3. The eccentric grinding device according to claim 2, characterized in that: The guide bar is connected to the bottom of the driven groove through a first limiting rope; the cross section of the outward end of the guide bar is triangular; and the vertical front and rear inner walls of the grinding frame are provided with triangular grooves.

4. The eccentric grinding device according to claim 1, characterized in that: 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; a counterweight groove in the center of the counterweight block is movably connected to the counterweight rod up and down; the cross sections of the counterweight groove and the counterweight rod are both square.

5. The eccentric grinding device according to claim 4, characterized in that: A rod groove is provided on the upper surface of the grinding frame; the counterweight rod is slidingly and sealedly connected to the rod groove at its lower end; the counterweight rod is connected to the rod groove at its lower end through a first tension spring; a lock groove is provided on the rear side of the counterweight rod; a lock block is slidingly and sealably connected to the lock groove; the lock block is connected to the bottom of the lock groove through a second limiting rope; the lock groove is connected to the rod groove through a second liquid hole; a guide surface is provided on the end of the lock block away from the bottom of the lock groove and inclined upward.

6. The eccentric grinding device according to claim 1, characterized in that: The grinding frame is provided with a first slot and a second slot on the left and right sides of the front side respectively; the first slot and the second slot on the adjacent grinding frame are aligned and correspond to each other; an L-shaped insert is sealed and connected in a sliding manner in the second slot; the insert can be inserted into the first slot of the adjacent grinding frame along the second slot.

7. The eccentric grinding device according to claim 6, characterized in that: The outer wall of the insert is provided with a spring slot; one end of the arc-shaped spring is fixedly connected in the spring slot; the inner wall of the first slot is provided with a first arc-shaped slot for the arc-shaped spring to enter; the inner wall of the second slot is provided with a second arc-shaped slot for the arc-shaped spring to enter.

8. The eccentric grinding device according to claim 1, characterized in that: A socket is provided on the left side of the orifice plate; the inner wall of the socket is slidingly sealed and connected to the socket plate; the socket plate and the bottom of the socket are connected by a spring; the arc-shaped inner wall of the socket is evenly provided with clamping grooves around the circumference; the clamping groove is slidingly sealed and connected to the clamping block; the bottom of the clamping groove and the bottom of the socket are connected through a third liquid hole.

9. The eccentric grinding device according to claim 8, characterized in that: A rotating groove is provided on the left side of the hole plate; a rotating plate is rotatably connected in the rotating groove; and the jack is provided on the left side of the rotating plate.

10. The eccentric grinding device according to claim 9, characterized in that: A staggered groove is provided inside the turntable; the staggered groove disconnects the third liquid hole; the staggered groove is slidingly sealed and connected to a staggered block; the staggered block is connected to the staggered groove at one end close to the center of the turntable through a second tension spring; the staggered block is penetrated by air holes and staggered holes; the staggered holes are aligned with and connected to the third liquid hole when the turntable stops rotating.

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