CN113799197B

CN113799197B - Fixing clamp for processing rotary oil seal

Info

Publication number: CN113799197B
Application number: CN202111365344.9A
Authority: CN
Inventors: 杜杰
Original assignee: Yantai Runfuxiang Oil Seal Co ltd
Current assignee: Yantai Runfuxiang Oil Seal Co ltd
Priority date: 2021-11-18
Filing date: 2021-11-18
Publication date: 2022-02-08
Anticipated expiration: 2041-11-18
Also published as: CN113799197A

Abstract

The invention relates to the technical field of fixed fixtures, in particular to a fixed fixture for processing a rotary oil seal, which comprises a bottom shell, wherein the outer surface of the bottom shell is movably connected with a processing seat, a first driving mechanism and a second driving mechanism are arranged inside the bottom shell, the processing seat is linked with the second driving mechanism, an outer clamping block is movably arranged on the outer surface of the processing seat, a transmission mechanism is movably arranged at the center inside the processing seat, the transmission mechanism comprises a connecting sleeve, the bottom end of the connecting sleeve is connected with the output end of the first driving mechanism, the top end of the connecting sleeve is movably connected with a taper sleeve, a movable taper block is movably connected inside the taper sleeve, a connecting rod is fixed at the top end of the movable taper block, and the connecting rod is telescopically connected with the processing seat and fixedly connected with the outer clamping block. The invention has convenient operation, has an internal and external synchronous clamping mechanism, improves the processing qualification rate and is beneficial to automatic production.

Description

Fixing clamp for processing rotary oil seal

Technical Field

The invention relates to the technical field of fixing clamps, in particular to a fixing clamp for machining a rotary oil seal.

Background

The oil blanket is the custom name of general sealing member, and the oil blanket mainly divide into two kinds of static oil blanket and dynamic oil blanket, and rotatory oil blanket is one of dynamic oil blanket, and rotatory oil blanket generally is through the mould direct pressing out semi-manufactured goods, and semi-manufactured goods's inner circle and periphery have the deckle edge of burr and calendering department, need further prune, need use mounting fixture when pruning semi-manufactured goods.

To this end, the patent publication of the chinese utility model: CN212240760U discloses mounting fixture is used in processing of rotatory oil blanket, the on-line screen storage device comprises a base, the intermediate position fixedly connected with disc of base, a plurality of movable grooves have evenly been seted up along the circumference in the inside of base, the inside sliding connection in movable groove has the sliding seat, the bar groove with the upper surface intercommunication in movable groove is seted up to one side lateral wall of base, the inside swing joint in bar groove has the sliding block, the upper end fixedly connected with arc clamp splice of sliding block. The utility model discloses a can fix a position fixedly to the rotatory oil blanket of centre gripping, concentricity when guaranteeing the centre gripping guarantees processingquality, and the centre gripping is adjusted conveniently, and work efficiency is high, reasonable in design, and stable in structure is reliable.

However, the clamping structure has some problems that the rotary oil seal is clamped from the outer side of the rotary oil seal through the arc-shaped clamping block, the movement of the arc-shaped clamping block needs manual operation, and the clamping efficiency is low;

secondly, because the main material of rotary oil seal is rubber, the texture of itself is softer, from outside centre gripping back, want to guarantee that the rotary oil seal is tight, avoid the rotary oil seal to add at the rotating machining, break away from anchor clamps, just need great clamping-force, clamping-force can influence the rotary oil seal, lead to the inner circle of rotary oil seal to the centre of a circle internal contraction, can appear the problem that the inner circle of rotary oil seal upwarps when tightening up, lead to outside cutting knife to cut rotary oil seal itself when cutting burr and deckle edge, influence the processing qualification rate of rotary oil seal.

Therefore, it is desirable to design a fixing clamp for machining a rotary oil seal to solve the above problems.

Disclosure of Invention

The invention aims to provide a fixing clamp for processing a rotary oil seal, which aims to solve the problems that the clamping efficiency is low and the processing qualified rate is influenced in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a fixing clamp for processing a rotary oil seal comprises a bottom shell, wherein the outer surface of the bottom shell is movably connected with a processing seat, a first driving mechanism and a second driving mechanism are arranged in the bottom shell, the processing seat is linked with the second driving mechanism, the outer surface of the processing seat is movably provided with an outer clamping block, the center of the interior of the processing seat is movably provided with a transmission mechanism, the transmission mechanism comprises a connecting sleeve, the bottom end of the connecting sleeve is connected with the output end of the first driving mechanism, the top end of the connecting sleeve is movably connected with a taper sleeve, the interior of the taper sleeve is movably connected with a movable taper block, and the top end of the movable conical block is fixed with a connecting rod which is telescopically connected with the processing seat and fixedly connected with the outer clamping block, the processing seat top is provided with material returned mechanism, fixture in material returned mechanism's inside movable mounting.

Preferably, the second driving mechanism comprises a motor, a driving bevel gear and a driven bevel gear, the processing seat is rotatably connected with the bottom shell through a bearing, an annular bulge is formed in the bottom of the processing seat, the driven bevel gear is sleeved at the annular bulge, the motor is fixed in the bottom shell, the output end of the motor is connected with the driving bevel gear through a coupling, and the driving bevel gear is meshed with the driven bevel gear.

Preferably, the top end of the connecting sleeve is fixed with a limiting pipe cover, the limiting pipe cover is sleeved on the taper sleeve, and the taper sleeve is rotatably connected with the connecting sleeve through a bearing.

Preferably, the movable conical block is composed of four blocks, the bottom of the movable conical block is conical, and the taper sleeve is in interference fit with the movable conical block.

Preferably, the first driving mechanism comprises an outer cylinder barrel, an inner cylinder barrel is fixed at the center of the inner portion of the outer cylinder barrel, a first piston is connected to the inner portion of the inner cylinder barrel in a telescopic mode, the output end of the first piston penetrates through the outer cylinder barrel, a second piston is sleeved on the outer surface of the inner cylinder barrel and is connected with the outer cylinder barrel in a telescopic mode, output shafts are fixed to the left side and the right side of the second piston, the top end of each output shaft penetrates through the outer cylinder barrel, and the top end of each output shaft is fixedly connected with the bottom of the connecting sleeve.

Preferably, the outer surface of the outer cylinder barrel is fixed with a first air inlet pipe, a second air inlet pipe, a third air inlet pipe and a fourth air inlet pipe, the first air inlet pipe is arranged at the same side as the third air inlet pipe, the second air inlet pipe is arranged at the same side as the fourth air inlet pipe, the first air inlet pipe and the second air inlet pipe are respectively communicated with the upper end and the lower end of the inner cavity of the inner cylinder barrel, and the third air inlet pipe and the fourth air inlet pipe are respectively communicated with the upper end and the lower end of the inner cavity of the outer cylinder barrel.

Preferably, the material returning mechanism comprises a connecting shaft, the connecting shaft is formed by rotationally connecting two shafts, the bottom end of the connecting shaft penetrates through the centers of the movable conical block and the conical sleeve and is in telescopic connection with the connecting sleeve, the bottom end of the connecting shaft is fixedly connected with the top end of the first piston, a pushing block is fixed at the top end of the connecting shaft and is embedded in the processing seat, and through grooves are uniformly formed in the outer surface of the pushing block.

Preferably, interior fixture encloses into an interior centre gripping section of thick bamboo by four interior clamp blocks, interior clamp block sets up in leading to the inslot, the inner wall top that leads to the groove is embedded to have dustproof film for clamp block and lead to the dirt-proof between the groove, just dustproof film offsets with interior clamp block, just the bottom both sides of interior clamp block all rotate through pivot and logical inslot wall and be connected, the inboard butt of interior clamp block has the second reed, the one end that interior clamp block was kept away from to the second reed and the inner wall fixed connection who leads to the groove, the outside cover that interior clamp held a section of thick bamboo is equipped with and pushes away a section of thick bamboo, the bottom mounting that pushes away a section of thick bamboo has the sleeve, the muffjoint is located epaxially to the muffjoint, just telescopic bottom mounting is in the center department of taper sleeve, telescopic external surface mounting has first reed, first one end of keeping away from the sleeve offsets with the connecting rod.

Preferably, the top of the processing seat is sleeved with a limiting ring.

Compared with the prior art, the invention has the beneficial effects that: this mounting fixture is used in rotatory oil blanket processing convenient operation has inside and outside synchronous fixture, improves the processing qualification rate, does benefit to automated production.

(1) Through the activity at logical inslot is equipped with interior clamp splice, the activity is equipped with outer clamp splice in the drain pan outside, through first actuating mechanism drive taper sleeve upward movement, can drive the activity taper block and tighten up to linking epaxial, make the outer clamp splice of connecting rod pulling tighten up the pairing rotation oil blanket outside and carry out the centre gripping to drain pan center department, and simultaneously, the taper sleeve is when the upward movement, synchronous drive sleeve promotes the push cylinder and rises, the top that makes the push cylinder promote interior clamp splice outwards expands the pairing rotation oil blanket inner circle and carries out the centre gripping, through inside and outside synchronous centre gripping, the problem that the deformation was tightened up to the solution inner circle, thereby improve the processing qualification rate.

(2) The rotary oil seal only needs to be placed on the processing seat, the outer clamping block and the inner clamping mechanism can be driven to be clamped through the matching of the transmission mechanism and the first driving mechanism, manual operation is not needed, automatic material returning can be completed through the rising of the pushing block after processing is completed, and the automatic material returning is facilitated and the operation is convenient.

Drawings

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

FIG. 2 is a schematic cross-sectional elevation view of the structure of the present invention;

FIG. 3 is a front cross-sectional view of the material returning mechanism and the inner clamping mechanism of FIG. 2 according to the present invention;

FIG. 4 is a schematic view of the first driving mechanism of FIG. 2 according to the present invention;

FIG. 5 is a schematic sectional front view of the first drive mechanism of FIG. 2 according to the present invention;

FIG. 6 is a schematic top cross-sectional view of the structure of FIG. 2 taken along line A-A of the present invention;

fig. 7 is a general schematic view of the structure of the taper sleeve and the movable taper block in fig. 2.

In the figure: 1. a bottom case; 2. processing a base; 3. a transmission mechanism; 31. connecting a sleeve; 32. a limiting pipe cover; 33. a taper sleeve; 34. a first reed; 35. a movable cone block; 36. a connecting rod; 4. an outer clamping block; 5. a first drive mechanism; 51. an outer cylinder barrel; 52. an inner cylinder barrel; 53. a first piston; 54. a second piston; 55. an output shaft; 56. a first intake pipe; 57. a second intake pipe; 58. a third intake pipe; 59. a fourth intake pipe; 6. a material returning mechanism; 61. a connecting shaft; 62. a push block; 63. a through groove; 7. an inner clamping mechanism; 71. an inner clamping block; 72. a second reed; 73. a dustproof film; 74. a push cylinder; 75. a sleeve; 8. a motor; 9. a driving bevel gear; 10. a driven bevel gear; 11. a limit ring.

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. 1-7, the present invention provides an embodiment:

the utility model provides a mounting fixture is used in processing of rotatory oil blanket, includes drain pan 1, and the surface swing joint of drain pan 1 has processing seat 2, and the internally mounted of drain pan 1 has first actuating mechanism 5 and second actuating mechanism, and processing seat 2 links with second actuating mechanism, and the surface swing joint of processing seat 2 has outer clamp splice 4, and the spacing ring 11 has been cup jointed at the top of processing seat 2, changes the spacing ring 11 of different diameters, can restrict the centre gripping diameter scope of outer clamp splice 4, the rotatory oil blanket of the different diameters of adaptation.

As shown in fig. 2 and 7, a transmission mechanism 3 is movably mounted at the center inside the processing seat 2, the transmission mechanism 3 includes a connection sleeve 31, the bottom end of the connection sleeve 31 is connected with the output end of the first driving mechanism 5, the top end of the connection sleeve 31 is movably connected with a taper sleeve 33, the interior of the taper sleeve 33 is movably connected with a movable taper block 35, the movable taper block 35 is composed of four blocks, the bottom of the movable taper block 35 is tapered, the taper sleeve 33 is in interference fit with the movable taper block 35, when the taper sleeve 33 moves up and down, the four movable taper blocks 35 can be pushed to fold inwards, the top end of the movable taper block 35 is fixed with a connecting rod 36, the connecting rod 36 is telescopically connected with the processing seat 2 and is fixedly connected with the outer clamping block 4, the input end of the transmission mechanism 3 is linked with the first driving mechanism 5, the transmission mechanism 3 is driven by the first driving mechanism 5, the output end of the transmission mechanism 3 is used for driving the outer clamping block 4, the outer clamping block 4 is clamped and loosened, the taper sleeve 33 is jacked through the connecting sleeve 31, the taper sleeve 33 moves upwards, the movable taper block 35 can be driven to be tightened towards the center, and the connecting rod 36 pulls the outer clamping block 4 to be tightened towards the center of the bottom shell 1 to clamp the outer side of the rotary oil seal.

The top of the processing seat 2 is provided with a material returning mechanism 6, and an inner clamping mechanism 7 is movably arranged inside the material returning mechanism 6.

Further, as shown in fig. 2, the second driving mechanism is by motor 8, initiative conical gear 9 and driven conical gear 10 are constituteed, processing seat 2 passes through the bearing and rotates with drain pan 1 to be connected, there is annular bulge in the bottom of processing seat 2, and driven conical gear 10 cup joints in annular bulge department, motor 8 fixes in drain pan 1, motor 8's output has initiative conical gear 9 through the coupling joint, and initiative conical gear 9 meshes with driven conical gear 10, through the work of motor 8, can drive initiative conical gear 9 rotatory, initiative conical gear 9 is rotatory through driven conical gear 10 drive processing seat 2, thereby it is rotatory to drive rotatory oil blanket, and thus, external cutting knife keeps motionless, can accomplish the circular cutting motion.

Further, connecting sleeve 31's top is fixed with spacing tube cap 32, and spacing tube cap 32 cover is established at taper sleeve 33, and taper sleeve 33 rotates with connecting sleeve 31 through the bearing to be connected, and spacing tube cap 32 is spacing to the bearing, and taper sleeve 33 rotates with connecting sleeve 31 to be connected, avoids processing seat 2 connecting sleeve 31 to follow taper sleeve 33 rotatory when rotatory.

Further, as shown in fig. 2, 4 and 5, the first driving mechanism 5 includes an outer cylinder 51, an inner cylinder 52 is fixed at the inner center of the outer cylinder 51, a first piston 53 is telescopically connected inside the inner cylinder 52, an output end of the first piston 53 penetrates through the outer cylinder 51, a second piston 54 is sleeved on the outer surface of the inner cylinder 52, the second piston 54 is annular and closely matched with the inner cylinder 52, the second piston 54 is telescopically connected with the outer cylinder 51, output shafts 55 are fixed on the left side and the right side of the second piston 54, the top end of the output shaft 55 penetrates through the outer cylinder 51, the top end of the output shaft 55 is fixedly connected with the bottom of the connecting sleeve 31, and the output shaft 55 can slide in the outer cylinder 51 to drive the output shaft 55 to drive the connecting sleeve 31 to ascend and descend.

Further, as shown in fig. 2, 4 and 5, a first air inlet pipe 56, a second air inlet pipe 57, a third air inlet pipe 58 and a fourth air inlet pipe 59 are fixed on the outer surface of the outer cylinder 51, the first air inlet pipe 56 is on the same side as the third air inlet pipe 58, the second air inlet pipe 57 is on the same side as the fourth air inlet pipe 59, the first air inlet pipe 56 and the second air inlet pipe 57 are respectively communicated with the upper end and the lower end of the inner cavity of the inner cylinder 52, the third air inlet pipe 58 and the fourth air inlet pipe 59 are respectively communicated with the upper end and the lower end of the inner cavity of the outer cylinder 51, the first air inlet pipe 56 is used for driving the first piston 53 to ascend, the second air inlet pipe 57 is used for driving the first piston 53 to descend, the third air inlet pipe 58 is used for driving the second piston 54 to ascend, and the fourth air inlet pipe 59 is used for driving the second piston 54 to descend.

Further, as shown in fig. 2, 4 and 5, the material returning mechanism 6 includes a connecting shaft 61, the connecting shaft 61 is formed by two shafts in a rotating connection manner, the upper half portion of the connecting shaft 61 can rotate along with the processing seat 2, the lower half portion of the connecting shaft 61 is fixed along with the first driving mechanism 5, the bottom end of the connecting shaft 61 penetrates through the centers of the movable conical block 35 and the conical sleeve 33, the connecting shaft 61 is telescopically connected with the connecting sleeve 31, the bottom end of the connecting shaft 61 is fixedly connected with the top end of the first piston 53, the top end of the connecting shaft 61 is fixed with a push block 62, the connecting shaft 61 is driven by the first piston 53 to lift to drive the push block 62 to lift, the push block 62 is embedded in the processing seat 2, the push block 62 is flush with the processing seat 2, and the outer surface of the push block 62 is uniformly provided with through grooves 63 for assembling the inner clamping mechanism 7.

Further, as shown in fig. 1 and 3, the inner clamping mechanism 7 is an inner clamping cylinder surrounded by four inner clamping blocks 71, the inner clamping block 71 is disposed in the through groove 63, a dustproof film 73 is embedded in the top of the inner wall of the through groove 63, the dustproof film 73 abuts against the inner clamping block 71, both sides of the bottom of the inner clamping block 71 are rotatably connected with the inner wall of the through groove 63 through a rotating shaft, the inner side of the inner clamping block 71 abuts against a second spring 72, one end of the second spring 72, which is far away from the inner clamping block 71, is fixedly connected with the inner wall of the through groove 63, a push cylinder 74 is sleeved outside the inner clamping cylinder, the push cylinder 74 is lifted by the push cylinder 74 to rotate counterclockwise, so that the top end of the inner clamping block 71 rotates outward, the push cylinder 74 moves downward, the bottom of the inner clamping block 71 loses contact, the inner clamping block 71 is applied by the resilience force of the second spring 72, so that the inner clamping block 71 can be restored to the original position, a sleeve 75 is fixed at the bottom of the push cylinder 74, the sleeve 75 is sleeved on the connecting shaft 61, and the bottom end of the sleeve 75 is fixed at the center of the taper sleeve 33, the first reed 34 is fixed on the outer surface of the sleeve 75, one end of the first reed 34, which is far away from the sleeve 75, abuts against the connecting rod 36, and the first reed 34 plays a role in providing elasticity for the connecting rod 36, so that when the movable taper block 35 is not acted by the taper sleeve 33, the first reed 34 can push the connecting rod 36 to move outwards, and the outer clamping block 4 is driven to expand outwards.

The working principle is as follows: during the use, put the rotary oil seal on processing seat 2, through for third inlet pipe 58 air feed, atmospheric pressure promotes second piston 54 upward movement, makes output shaft 55 push up the taper sleeve 33 through adapter sleeve 31, through the upward movement of taper sleeve 33, can drive movable taper block 35 and tighten up to even axle 61 in, makes connecting rod 36 pull outer clamp splice 4 and tighten up to the bottom shell 1 center department and carry out the centre gripping to the rotary oil seal outside.

Simultaneously, taper sleeve 33 is when the upward movement, and synchronous drive sleeve 75 promotes a pusher 74 and rises, makes the top that a pusher 74 promoted interior clamp splice 71 expand outwards and carry out the centre gripping to the rotating oil seal inner circle, through inside and outside synchronous centre gripping, fixed completion back, through motor 8 work, motor 8 drives driven bevel gear 10 through initiative bevel gear 9 and drives the processing seat 2 rotatory, can make the rotating oil seal rotatory, the cutting knife decline at rotating oil seal top, can cut off the epitaxial deckle edge of rotating oil seal or inner circle deckle edge.

After the processing is finished, air is supplied through the fourth air inlet pipe 59, the second piston 54 is retracted downwards, the outer clamping block 4 and the inner clamping mechanism 7 are clamped inside and outside, then air is supplied through the first air inlet pipe 56, the first piston 53 is pushed to ascend by air pressure, the connecting shaft 61 can be jacked to push the push block 62 to ascend, the rotary oil seal is jacked, and the material returning is finished.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a mounting fixture is used in processing of rotatory oil blanket, includes drain pan (1), its characterized in that: the outer surface swing joint of drain pan (1) has processing seat (2), the internally mounted of drain pan (1) has first actuating mechanism (5) and second actuating mechanism, processing seat (2) and the linkage of second actuating mechanism, the outer surface swing joint of processing seat (2) has outer clamp splice (4), the inside center department movable mounting of processing seat (2) has drive mechanism (3), drive mechanism (3) include connecting tube (31), the bottom of connecting tube (31) links to each other with the output of first actuating mechanism (5), the top swing joint of connecting tube (31) has taper sleeve (33), the inside swing joint of taper sleeve (33) has movable taper block (35), just the top of movable taper block (35) is fixed with connecting rod (36), connecting rod (36) with processing seat (2) flexible connection and with outer clamp splice (4) fixed connection, the processing seat (2) is provided with a material returning mechanism (6) at the top, and an inner clamping mechanism (7) is movably arranged inside the material returning mechanism (6).

2. The fixing jig for rotary oil seal machining according to claim 1, characterized in that: the second driving mechanism is composed of a motor (8), a driving bevel gear (9) and a driven bevel gear (10), the processing seat (2) is rotatably connected with the bottom shell (1) through a bearing, an annular bulge is arranged at the bottom of the processing seat (2), the driven bevel gear (10) is sleeved at the annular bulge, the motor (8) is fixed in the bottom shell (1), the output end of the motor (8) is connected with the driving bevel gear (9) through a coupler, and the driving bevel gear (9) is meshed with the driven bevel gear (10).

3. The fixing jig for rotary oil seal machining according to claim 1, characterized in that: the top of connecting sleeve (31) is fixed with spacing tube cap (32), just spacing tube cap (32) cover is established on taper sleeve (33), taper sleeve (33) are connected through bearing and connecting sleeve (31) rotation.

4. The fixing jig for rotary oil seal machining according to claim 1, characterized in that: the movable conical block (35) is composed of four blocks, the bottom of the movable conical block (35) is conical, and the taper sleeve (33) is in interference fit with the movable conical block (35).

5. The fixing jig for rotary oil seal machining according to claim 1, characterized in that: the first driving mechanism (5) comprises an outer cylinder barrel (51), an inner cylinder barrel (52) is fixed at the center of the inner portion of the outer cylinder barrel (51), a first piston (53) is connected to the inner portion of the inner cylinder barrel (52) in a telescopic mode, the output end of the first piston (53) penetrates through the outer cylinder barrel (51), a second piston (54) is sleeved on the outer surface of the inner cylinder barrel (52), the second piston (54) is connected with the outer cylinder barrel (51) in a telescopic mode, output shafts (55) are fixed to the left side and the right side of the second piston (54), the top end of each output shaft (55) penetrates through the outer cylinder barrel (51), and the top end of each output shaft (55) is fixedly connected with the bottom of the connecting sleeve (31).

6. The fixing jig for rotary oil seal machining according to claim 5, characterized in that: the outer surface of the outer cylinder barrel (51) is fixed with a first air inlet pipe (56), a second air inlet pipe (57), a third air inlet pipe (58) and a fourth air inlet pipe (59), the first air inlet pipe (56) is arranged at the same side as the third air inlet pipe (58), the second air inlet pipe (57) is arranged at the same side as the fourth air inlet pipe (59), the first air inlet pipe (56) and the second air inlet pipe (57) are respectively communicated with the upper end and the lower end of the inner cavity of the inner cylinder barrel (52), and the third air inlet pipe (58) and the fourth air inlet pipe (59) are respectively communicated with the upper end and the lower end of the inner cavity of the outer cylinder barrel (51).

7. The fixing jig for rotary oil seal machining according to claim 6, characterized in that: material returned mechanism (6) are including linking axle (61), link axle (61) and rotate by two axles and connect and constitute, the center department that activity taper block (35) and taper sleeve (33) are run through to the bottom of linking axle (61), just link axle (61) and connecting tube (31) telescopic connection, the bottom of linking axle (61) and the top fixed connection of first piston (53), the top of linking axle (61) is fixed with ejector pad (62), inlay in processing seat (2) ejector pad (62), logical groove (63) have evenly been seted up to ejector pad (62) surface.

8. The fixing jig for rotary oil seal machining according to claim 7, characterized in that: the inner clamping mechanism (7) is formed by enclosing four inner clamping blocks (71) into an inner clamping barrel, the inner clamping blocks (71) are arranged in the through grooves (63), a dustproof film (73) is embedded in the top of the inner wall of each through groove (63), the dustproof film (73) is abutted to the inner clamping blocks (71), the two sides of the bottom of each inner clamping block (71) are rotatably connected with the inner wall of each through groove (63) through rotating shafts, the inner side of each inner clamping block (71) is abutted to a second reed (72), one end, far away from the inner clamping block (71), of each second reed (72) is fixedly connected with the inner wall of each through groove (63), a push barrel (74) is sleeved outside the inner clamping barrel, a sleeve (75) is fixed at the bottom end of the push barrel (74), the sleeve (75) is sleeved on the connecting shaft (61), the bottom end of the sleeve (75) is fixed at the center of the taper sleeve (33), and a first reed (34) is fixed on the outer surface of the sleeve (75), one end of the first reed (34) far away from the sleeve (75) is abutted against the connecting rod (36).

9. The fixing jig for rotary oil seal machining according to claim 1, characterized in that: the top of the processing seat (2) is sleeved with a limiting ring (11).