CN113334103A

CN113334103A - Eccentric turning tool for machining oil suction pump cover and eccentric machining method

Info

Publication number: CN113334103A
Application number: CN202110711748.2A
Authority: CN
Inventors: 吕煜斐
Original assignee: Jiaxing Xiuer Network Technology Co ltd
Current assignee: Jiaxing Xiuer Network Technology Co ltd
Priority date: 2021-06-25
Filing date: 2021-06-25
Publication date: 2021-09-03

Abstract

The invention relates to the technical field of eccentric turning, and discloses an eccentric turning tool for machining an oil suction pump cover, which comprises a lathe, a clamping assembly and a moving assembly, wherein a rotating machine is fixedly arranged at the top end of the lathe, an output shaft is fixedly arranged on the right side of the rotating machine, the moving assembly is fixedly arranged at the right end of the output shaft, the clamping assembly is movably arranged on the right side of the moving assembly, the equipment is used for clamping and fixing the pump cover to be machined through the clamping assembly, after the clamping is finished, the moving assembly is used for completing the movement and the eccentricity of the pump cover to complete the preparation work, the pump cover is driven to rotate when the machining is started, the moving assembly is fixed by using the inertia generated by the rotation, the faster the larger the rotation speed, the firmer the inertia is, and the pump cover can be prevented from being fixed due to the fact that the rotation axis does not move the center of the pump cover when the eccentric turning is carried out, causing the pump cover to shift when rotated.

Description

Eccentric turning tool for machining oil suction pump cover and eccentric machining method

Technical Field

The invention relates to the technical field of eccentric turning, in particular to an eccentric turning tool for machining a pump cover of an oil suction pump.

Background

The oil suction pump is a tool for sucking liquid in a pipeline, the pump cover is one of important component parts of the oil suction pump, when the oil suction pump cover is machined, an eccentric turning method is generally used, the pump cover needs to be clamped in an offset center axis and then machined, the asymmetric axis is fixed, the turning needs to drive a workpiece to rotate and machine, under the action of rotating inertia, the workpiece can be possibly offset, and the machined pump cover cannot meet the use standard.

Aiming at the defects of the prior art, the invention provides an eccentric turning tool for machining an oil suction pump cover, which can prevent the pump cover from deviating during rotation due to the fact that the rotation axis does not exceed the center of the pump cover when the pump cover is subjected to eccentric turning by means of inertia generated during rotation, the faster the rotation speed is, the larger the inertia is, the firmer the fixation is, has the advantage of preventing the clamped pump cover from deviating, and solves the problem of workpiece deviation.

Disclosure of Invention

In order to achieve the purpose of preventing the clamped pump cover from deviating, the invention provides the following technical scheme: the eccentric turning tool for machining the oil suction pump cover comprises a lathe, a clamping assembly and a moving assembly, wherein a rotating machine is fixedly mounted at the top end of the lathe, an output shaft is fixedly mounted on the right side of the rotating machine, the moving assembly is fixedly mounted at the right end of the output shaft, and the clamping assembly is movably mounted on the right side of the moving assembly; the clamping assembly comprises a clamping plate, a threaded rod is inserted into the bottom of the clamping plate, a rotating wheel is fixedly mounted at the bottom end of the threaded rod, a connecting block is movably embedded in the clamping plate, a pushing block is fixedly mounted at the top end of the connecting block, a sliding rod is fixedly mounted on the front face of the pushing block, a connecting plate is sleeved on the outer side of the sliding rod, a positioning shaft is inserted into the bottom of the connecting plate, a clamping plate is movably mounted in the clamping plate, and a rotating shaft is inserted into the clamping plate; the movable assembly comprises a connecting rod, the connecting rod is inserted into one end of the clamping plate and fixedly provided with an insert plate, the bottom end of the connecting rod is fixedly provided with a movable plate, a rotating rod is inserted into the movable plate, the rotating rod is inserted into one end of the movable plate and fixedly provided with a gear set, a fixed shaft is fixedly arranged at the top of the gear set, an inserting shaft is fixedly arranged at the left end and the right end of the fixed shaft, an outer shaft is fixedly arranged at the other end of the inserting shaft, a fixed sliding block is sleeved on the outer side of the inserting shaft, a sleeve frame is fixedly arranged at the top end of the movable plate, a sleeve ring is fixedly arranged inside the sleeve frame, a push rod is fixedly arranged at the top end of the fixed shaft, an inner rod is fixedly arranged at the top end of the push rod, and a support is fixedly arranged at the top of the inner rod.

As optimization, the bottom end of the clamping disc is fixedly provided with a socket, a through hole is formed in the socket, threads are formed in the inner wall of the through hole, the threaded rod is connected with the socket through the threads, the top end of the threaded rod is fixedly provided with a baffle, the threaded rod is inserted into the connecting block, the baffle is movably arranged in the connecting block, the diameter of the baffle is larger than that of the threaded rod, and the pushing block can move up and down by rotating the threaded rod.

As the optimization, the connecting plate has been inside to have seted up the spout, and the spout is totally two, the slide bar is totally two sets of, and each group is two, and fixed mounting is on the top of ejector pad and splint respectively, the slide bar scarf joint is inside the spout, splint one side fixed mounting that is relative has the backing plate, pivot fixed mounting drives the slide bar through the ejector pad and removes inside the dress chuck, and the slide bar slides in the spout to promote the connecting plate and rotate, the rethread connecting plate drives another slide bar and removes, reaches swivel splint's purpose.

As optimization, the spacing groove has all been seted up at both ends about the ejector pad, the straight flute has been seted up to the chuck inside, the ejector pad scarf joint is inside the straight flute, the left and right sides inner wall fixed surface of straight flute installs the limiting plate, the limiting plate scarf joint is inside the spacing groove, and spacing groove and limiting plate can prevent that the ejector pad from removing and surpassing the distance, avoid the inside damage of equipment.

As an optimization, the positioning groove is formed in the clamping disc, the embedded plate is embedded in the positioning groove, the support is fixedly installed at the bottom end of the clamping disc, the push rod is a telescopic rod, the rotating groove is formed in the top end of the sleeve frame, the push rod is embedded in the rotating groove, and the push rod rotates to push the inner rod to move left and right.

As optimization, the fixed sliding block movable mounting is inside the lantern ring, the inside fixed mounting of lantern ring has the fixed block, the cross recess has been seted up to the fixed block inside, fixed sliding block outer fringe fixed mounting has the cross plate, the cross plate scarf joint is inside the cross recess, and cross plate and cross recess can prevent fixed sliding block rotatory, prescribe a limit to that fixed sliding block only can remove about.

As the optimization, one side fixed mounting that fixed slider and outer axle are close to each other has fixed friction disc, fixed axle movable mounting is inside the cover frame, fixed slider weight is greater than the outer axle, utilizes the inertia that produces when removing the dish rotation, and fixed slider moves to the outside to laminate mutually with the outer axle, through the huge frictional force that fixed friction disc produced between outer axle and the fixed slider, come to fix the outer axle, reach and fix the fixed axle through inserting the axle, come to the fixed purpose of interior pole.

A use method of an eccentric turning tool for machining a pump cover of an oil suction pump comprises the following steps:

s1: inserting an oil suction pump cover to be processed between two clamping plates of the clamping plate, rotating the rotating wheel and the threaded rod, and pushing the push block to ascend through the connecting block;

s2: on the basis of S1, the push block drives the slide bar to rise, so as to push the connecting plate to rotate, and the connecting plate pushes the clamping plates to rotate through the other slide bar, so that the clamping plates on the two sides are close to each other, and the pump cover is clamped tightly;

s3: on the basis of S2, after the pump cover is clamped, the rotating rod is rotated, the fixed shaft is driven to rotate by the gear set, and the push rod is driven to rotate by the fixed shaft;

s4: on the basis of S3, the rotation of the push rod drives the inner rod to move left and right, and the clamping disc is driven to translate due to the fact that the inner rod is fixedly connected with the clamping disc through the support, so that the purpose of moving the pump cover is achieved, the center of the pump cover is enabled to deviate, and eccentric machining is facilitated;

s5: on the basis of S4, the machine is started, the output shaft starts to drive the movable disc to start rotating, and the movable disc is connected with the clamping disc through two connecting rods, so that the clamping disc and the pump cover are driven to rotate together to start eccentric machining of the pump cover;

s6: on the basis of S5, the movable disk starts to rotate, and under the action of inertia, the fixed slide block slides outwards and is attached to the outer shaft on the outer side, and the fixed friction plates are also attached to each other;

s7: on the basis of S6, the outer shaft is fixed through the huge friction force generated by fixing the friction plate between the outer shaft and the fixed sliding block, the fixed shaft is fixed through the inserting shaft, the inner rod is fixed, the fixed shaft is prevented from rotating, and the clamping disc is fixed.

The invention has the beneficial effects that: after an oil suction pump cover to be processed is inserted into a clamping plate, a rotating wheel and a threaded rod are rotated, the threaded rod pushes a push block upwards through a connecting block, the connecting plate is pushed to rotate around a positioning shaft through the movement of a sliding rod in a sliding groove, so that the clamping plate is pushed to start rotating, the purpose that the clamping plates are close to each other is achieved, the oil suction pump cover is clamped and fixed by the clamping plates and is prevented from falling off, after the pump cover is clamped, the rotating rod is rotated and drives a fixed shaft to rotate through a gear set, a push rod is fixedly arranged at the top end of the fixed shaft and is driven to rotate, so that an inner rod is driven to rotate to move left and right, the effect of moving the clamping plate left and right is achieved, the clamping plate drives the pump cover to move, the eccentric processing effect is achieved, an output shaft drives a movable plate to rotate, and a fixed sliding block moves outwards by utilizing inertia generated when the movable plate rotates, so as to be attached to an outer shaft, the outer shaft is fixed through huge friction force generated by fixing the friction plate between the outer shaft and the fixed sliding block, the purpose of fixing the fixed shaft through the inserted shaft and fixing the inner rod is achieved, the fixed shaft is prevented from rotating, the clamping disc is fixed, and the pump cover is prevented from deviating during rotating processing.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a clamping assembly of the present invention;

FIG. 3 is an enlarged schematic view of the threaded rod of FIG. 2 at A in accordance with the present invention;

FIG. 4 is a schematic view of a moving assembly of the present invention;

FIG. 5 is an enlarged view of the fixed slide block at B of FIG. 4 according to the present invention;

FIG. 6 is a schematic view of a stent of the present invention.

In the figure: 1. turning a lathe; 2. clamping the assembly; 201. a clamping disc is arranged; 202. a threaded rod; 203. a rotating wheel; 204. connecting blocks; 205. a push block; 206. a slide bar; 207. a connecting plate; 208. positioning the shaft; 209. a splint; 210. a rotating shaft; 3. a moving assembly; 301. a connecting rod; 302. a panel; 303. a movable tray; 304. a rotating rod; 305. a gear set; 306. a fixed shaft; 307. inserting a shaft; 308. an outer shaft; 309. fixing the sliding block; 310. sleeving a frame; 311. a collar; 312. a push rod; 313. an inner rod; 314. a support; 4. turning the machine; 5. and an output shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, an eccentric turning tool for machining a pump cover of an oil suction pump comprises a lathe 1, a clamping assembly 2 and a moving assembly 3, wherein a rotating machine 4 is fixedly installed at the top end of the lathe 1, an output shaft 5 is fixedly installed on the right side of the rotating machine 4, the moving assembly 3 is fixedly installed at the right end of the output shaft 5, and the clamping assembly 2 is movably installed on the right side of the moving assembly 3; the clamping assembly 2 comprises a clamping disc 201, a threaded rod 202 is inserted into the bottom of the clamping disc 201, a rotating wheel 203 is fixedly mounted at the bottom end of the threaded rod 202, a connecting block 204 is movably embedded in the clamping disc 201, a pushing block 205 is fixedly mounted at the top end of the connecting block 204, a sliding rod 206 is fixedly mounted on the front face of the pushing block 205, a connecting plate 207 is sleeved on the outer side of the sliding rod 206, a positioning shaft 208 is inserted into the bottom of the connecting plate 207, a clamping plate 209 is movably mounted in the clamping disc 201, and a rotating shaft 210 is inserted into the clamping plate 209; the moving assembly 3 comprises a connecting rod 301, the connecting rod 301 is inserted into one end of the clamping disc 201 and fixedly provided with an insert plate 302, the bottom end of the connecting rod 301 is fixedly provided with a moving disc 303, a rotating rod 304 is inserted into the moving disc 303, the rotating rod 304 is inserted into one end of the moving disc 303 and fixedly provided with a gear set 305, the top of the gear set 305 is fixedly provided with a fixed shaft 306, the left end and the right end of the fixed shaft 306 are fixedly provided with an insert shaft 307, the other end of the insert shaft 307 is fixedly provided with an outer shaft 308, the outer side of the insert shaft 307 is sleeved with a fixed sliding block 309, the top of the moving disc 303 is fixedly provided with a sleeve frame 310, the inner part of the sleeve frame 310 is fixedly provided with a sleeve ring 311, the top of the fixed shaft 306 is fixedly provided with a push rod 312, the inner rod 313 is inserted into the inner side of the push rod 312, and the top of the inner rod 313 is fixedly provided with a support 314.

Referring to fig. 2-3, a socket is fixedly installed at the bottom end of the clamping plate 201, a through hole is formed in the socket, threads are formed in the inner wall of the through hole, the threaded rod 202 is connected with the socket through the threads, a baffle threaded rod 202 is fixedly installed at the top end of the threaded rod 202 and is inserted into the connecting block 204, the baffle is movably installed in the connecting block 204, the diameter of the baffle is larger than that of the threaded rod 202, and the push block 205 can move up and down by rotating the threaded rod 202.

Referring to fig. 2, the connecting plate 207 is provided with two sliding grooves, and the two sliding grooves are provided, and the two sliding rods 206 are provided in two groups, each two groups are respectively and fixedly mounted at the top ends of the pushing block 205 and the clamping plate 209, the sliding rod 206 is embedded inside the sliding groove, the opposite side of the clamping plate 209 is fixedly mounted with a backing plate, the rotating shaft 210 is fixedly mounted inside the clamping plate 201, the pushing block 205 drives the sliding rod 206 to move, the sliding rod 206 slides in the sliding groove, so as to push the connecting plate 207 to rotate, and then the connecting plate 207 drives the other sliding rod 206 to move, thereby achieving the purpose of rotating the clamping plate 209.

Referring to fig. 2, the left end and the right end of the push block 205 are both provided with a limiting groove, the clamping disc 201 is internally provided with a straight groove, the push block 205 is embedded inside the straight groove, the inner wall surfaces of the left side and the right side of the straight groove are fixedly provided with a limiting plate, the limiting plate is embedded inside the limiting groove, and the limiting groove and the limiting plate can prevent the push block 205 from moving beyond a distance and avoid the internal damage of the equipment.

Referring to fig. 2, a positioning groove is formed in the clamping plate 201, the insert plate 302 is embedded in the positioning groove, the bracket 314 is fixedly installed at the bottom end of the clamping plate 201, the push rod 312 is a telescopic rod, a rotating groove is formed at the top end of the sleeve frame 310, the push rod 312 is embedded in the rotating groove, and the inner rod 313 is pushed to move left and right by rotation of the push rod 312.

Referring to fig. 4-5, the fixed slider 309 is movably mounted inside the collar 311, the fixed block is fixedly mounted inside the collar 311, a cross groove is formed inside the fixed block, a cross plate is fixedly mounted on the outer edge of the fixed slider 309, the cross plate is embedded inside the cross groove, the cross plate and the cross groove can prevent the fixed slider 309 from rotating, and the fixed slider 309 is limited to move left and right.

Referring to fig. 4-5, a fixed friction plate is fixedly installed on a side where the fixed slider 309 and the outer shaft 308 are close to each other, the fixed shaft 306 is movably installed inside the sleeve frame 310, the fixed slider 309 has a larger weight than the outer shaft 308, the fixed slider 309 moves outward by using inertia generated when the moving plate 303 rotates, so as to be attached to the outer shaft 308, the outer shaft 308 is fixed by a large friction force generated by the fixed friction plate between the outer shaft 308 and the fixed slider 309, and the purpose of fixing the fixed shaft 306 by the insertion shaft 307 and fixing the inner rod 313 is achieved.

s1: inserting a pump cover of an oil suction pump to be processed between two clamping plates 209 of the clamping plate 201, rotating the rotating wheel 203 and the threaded rod 202, and pushing the push block 205 to ascend through the connecting block 204;

s2: on the basis of S1, the push block 205 drives the slide bar 206 to rise, thereby pushing the connecting plate 207 to rotate, and the connecting plate 207 then pushes the clamping plates 209 to rotate through the other slide bar 206, so that the clamping plates 209 at the two sides are close to each other, and the pump cover is clamped;

s3: on the basis of S2, after the pump cover is clamped, the rotating rod 304 is rotated, the fixed shaft 306 is driven to rotate by the gear set 305, and the push rod 312 is driven to rotate by the fixed shaft 306;

s4: on the basis of S3, the rotation of the push rod 312 drives the inner rod 313 to move left and right, and as the inner rod 313 is fixedly connected with the clamping disc 201 through the bracket 314, the clamping disc 201 is driven to translate, so that the purpose of moving the pump cover is achieved, the center of the pump cover is deviated, and eccentric processing is facilitated;

s5: on the basis of S4, the machine is started, the output shaft 5 starts to drive the movable disc 303 to start rotating, and the movable disc 303 is connected with the clamping disc 201 through the two connecting rods 301, so that the clamping disc 201 and the pump cover are driven to rotate together, and the pump cover starts to be eccentrically machined;

s6: on the basis of S5, the movable disk 303 starts to rotate, and under the action of inertia, the fixed slider 309 slides outward, and is attached to the outer shaft 308 on the outer side, and the fixed friction plates are also attached to each other;

s7: in S6, the outer shaft 308 is fixed by a large friction force generated by fixing the friction plate between the outer shaft 308 and the fixed slider 309, the fixed shaft 306 is fixed by the insertion shaft 307, the inner rod 313 is fixed, the fixed shaft 306 is prevented from rotating, and the chucking plate 201 is fixed.

To sum up, after an oil suction pump cover to be machined is inserted into the clamping disc 201, the rotating wheel 203 and the threaded rod 202 are rotated, the threaded rod 202 pushes the push block 205 upwards through the connecting block 204, the connecting plate 207 is pushed to rotate around the positioning shaft 208 through the movement of the sliding rod 206 in the sliding groove, so that the clamping plate 209 is pushed to start rotating, the purpose that the clamping plates 209 approach each other is achieved, the oil suction pump cover is clamped and fixed through the clamping plates 209 to prevent falling off, after the pump cover is clamped, the rotating rod 304 is rotated to drive the fixed shaft 306 to rotate through the gear set 305, because the top end of the fixed shaft 306 is fixedly provided with the push rod 312, the push rod 312 is driven to rotate, the inner rod 313 is driven to move left and right to achieve the effect of moving the clamping disc 201, the clamping disc 201 drives the pump cover to move to complete the machining effect, when eccentric machining is started, the output shaft 5 drives the movable disc 303 to rotate, and inertia generated when the movable disc 303 rotates is utilized, the fixed slider 309 moves outward to be attached to the outer shaft 308, the outer shaft 308 is fixed by a large friction force generated by fixing a friction plate between the outer shaft 308 and the fixed slider 309, the fixed shaft 306 is fixed by the insertion shaft 307, and the inner rod 313 is fixed, so that the fixed shaft 306 is prevented from rotating, the clamping disc 201 is fixed, and the pump cover is prevented from deviating during rotating.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The utility model provides an eccentric car frock for processing oil suction pump cover, includes lathe (1), clamping subassembly (2) and removal subassembly (3), its characterized in that: the top end of the lathe (1) is fixedly provided with a rotating machine (4), the right side of the rotating machine (4) is fixedly provided with an output shaft (5), the moving component (3) is fixedly arranged at the right end of the output shaft (5), and the clamping component (2) is movably arranged at the right side of the moving component (3);

the clamping assembly (2) comprises a clamping plate (201), a threaded rod (202) is inserted into the bottom of the clamping plate (201), a rotating wheel (203) is fixedly mounted at the bottom end of the threaded rod (202), a connecting block (204) is movably embedded in the clamping plate (201), a pushing block (205) is fixedly mounted at the top end of the connecting block (204), a sliding rod (206) is fixedly mounted on the front surface of the pushing block (205), a connecting plate (207) is sleeved on the outer side of the sliding rod (206), a positioning shaft (208) is inserted into the bottom of the connecting plate (207), a clamping plate (209) is movably mounted in the clamping plate (201), and a rotating shaft (210) is inserted into the clamping plate (209);

the movable assembly (3) comprises a connecting rod (301), one end of the connecting rod (301) inserted in the clamping disc (201) is fixedly provided with a panel (302), the bottom end of the connecting rod (301) is fixedly provided with a movable disc (303), a rotating rod (304) is inserted in the movable disc (303), one end of the rotating rod (304) inserted in the movable disc (303) is fixedly provided with a gear set (305), the top of the gear set (305) is fixedly provided with a fixed shaft (306), the left end and the right end of the fixed shaft (306) are both fixedly provided with an inserting shaft (307), the other end of the inserting shaft (307) is fixedly provided with an outer shaft (308), the outer side of the inserting shaft (307) is sleeved with a fixed sliding block (309), the top end of the movable disc (303) is fixedly provided with a sleeve frame (310), the inner part of the sleeve frame (310) is fixedly provided with a sleeve ring (311), the top end of the fixed shaft (306) is fixedly provided with a push rod (312), an inner rod (313) is fixedly mounted at the top end of the push rod (312), and a support (314) is fixedly mounted at the top of the inner rod (313).

2. The eccentric turning tool for machining the pump cover of the oil suction pump according to claim 2, and is characterized in that: the clamping plate is characterized in that a socket is fixedly mounted at the bottom end of the clamping plate (201), a through hole is formed in the socket, threads are formed in the inner wall of the through hole, the threaded rod (202) is connected with the socket through the threads, a baffle is fixedly mounted at the top end of the threaded rod (202), the threaded rod (202) is connected with the connecting block (204) in an inserting mode, the baffle is movably mounted in the connecting block (204), and the diameter of the baffle is larger than that of the threaded rod (202).

3. The eccentric turning tool for machining the pump cover of the oil suction pump according to claim 2, and is characterized in that: the connecting plate (207) is inside to be seted up the spout, and the spout is totally two, slide bar (206) are totally two sets ofly, and each group is two, and fixed mounting is respectively on the top of ejector pad (205) and splint (209), slide bar (206) scarf joint is inside the spout, splint (209) relative one side fixed mounting has the backing plate, pivot (210) fixed mounting is inside dress (201).

4. The eccentric turning tool for machining the pump cover of the oil suction pump according to claim 2, and is characterized in that: the limiting groove has all been seted up at both ends about ejector pad (205), the straight flute has been seted up to clamping dish (201) inside, ejector pad (205) scarf joint is inside the straight flute, the left and right sides inner wall fixed surface of straight flute installs the limiting plate, the limiting plate scarf joint is inside the limiting groove.

5. The eccentric turning tool for machining the pump cover of the oil suction pump according to claim 3, characterized in that: the locating slot is formed in the clamping disc (201), the embedded plate (302) is embedded in the locating slot, the support (314) is fixedly installed at the bottom end of the clamping disc (201), the push rod (312) is a telescopic rod, the top end of the sleeve frame (310) is provided with a rotating slot, and the push rod (312) is embedded in the rotating slot.

6. The eccentric turning tool for machining the pump cover of the oil suction pump according to claim 3, characterized in that: fixed slider (309) movable mounting is inside lantern ring (311), the inside fixed mounting of lantern ring (311) has the fixed block, the cross recess has been seted up to the fixed block inside, fixed slider (309) outer fringe fixed mounting has the cross plate, the cross plate scarf joint is inside the cross recess.

7. The eccentric turning tool for machining the pump cover of the oil suction pump according to claim 3, characterized in that: one side fixed mounting that fixed slider (309) and outer axle (308) are close to each other has fixed friction disc, fixed axle (306) movable mounting is inside cover frame (310), fixed slider (309) weight is greater than outer axle (308).

8. The use method of the eccentric lathe tool for machining the oil suction pump cover according to the claim 1 is characterized by comprising the following steps:

s1: inserting a pump cover of an oil suction pump to be processed between two clamping plates (209) of an installing clamping plate (201), rotating a rotating wheel (203) and a threaded rod (202), and pushing a push block (205) to ascend through a connecting block (204);

s2: on the basis of S1, the push block (205) drives the slide bar (206) to rise, so as to push the connecting plate (207) to rotate, the connecting plate (207) pushes the clamping plates (209) to rotate through the other slide bar (206), so that the clamping plates (209) on the two sides are close to each other, and the pump cover is clamped;

s3: on the basis of S2, after the pump cover is clamped, the rotating rod (304) is rotated, the gear set (305) is used for driving the fixed shaft (306) to rotate, and the fixed shaft (306) drives the push rod (312) to rotate;

s4: on the basis of S3, the rotation of the push rod (312) drives the inner rod (313) to move left and right, and the inner rod (313) is fixedly connected with the clamping disc (201) through the bracket (314), so that the clamping disc (201) is driven to translate, the purpose of moving the pump cover is achieved, the center of the pump cover is deviated, and eccentric processing is facilitated;

s5: on the basis of S4, the machine is started, the output shaft (5) starts to drive the movable disc (303) to start rotating, and the movable disc (303) is connected with the clamping disc (201) through two connecting rods (301), so that the clamping disc (201) and the pump cover are driven to rotate together, and the pump cover starts to be eccentrically machined;

s6: on the basis of S5, the movable disk (303) starts to rotate, and under the action of inertia, the fixed slide block (309) slides outwards and is attached to the outer shaft (308) on the outer side, and the fixed friction plates are also attached to each other;

s7: based on S6, the outer shaft (308) is fixed by the huge friction force generated by fixing the friction plate between the outer shaft (308) and the fixed slide block (309), the fixed shaft (306) is fixed by the inserting shaft (307), the inner rod (313) is fixed, thereby preventing the fixed shaft (306) from rotating and fixing the clamping disc (201).