Fixture for machining inner diameter of multi-valve ring

Abstract

The utility model discloses a fixture for processing the inner diameter of a multi-valve ring, which comprises a base, a clamping mechanism, a clamping disc, a guide disc and a fixed disc, the clamping disc is installed at the top of the base, the guide disc is rotatably sleeved on the base, the fixed disc is slidably sleeved on the base, the base is provided with a threaded ring, and the threaded ring is sleeved on the fixed disc. The top of the threaded ring abuts against the fixing disc. A plurality of pre-clamping seats are arranged on the peripheral side of the clamping disc in a sliding manner; a plurality of clamping mechanisms are arranged on the peripheral side between the guide disc and the fixed disc; the clamping mechanism comprises a seat body and a linear driving mechanism arranged on the seat body, the linear driving mechanism is used for driving the two clamping arms to move towards each other or back to back, and a multi-valve ring is clamped between the adjacent clamping arms. When the clamping device is used, the position of the pre-clamping seat and the positions of the adjacent clamping arms can be adjusted according to the inner diameter sizes of different multi-valve rings, the multi-valve rings can be rapidly clamped, and the clamping device has good practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of graphite multi-petal ring clamping tooling, in particular to a clamp used for machining the inner diameter of a multi-petal ring. Background Art

[0002] For graphite rings with multi-petal structures, it is necessary to clamp and fix each petal ring. The existing patent CN209774009U discloses a fixture for processing the inner diameter of a multi-petal ring, including an open tire, a multi-petal tire and a clamp. One end face of the open tire is provided with a groove matching the multi-petal ring, and the multi-petal ring is embedded in the groove. The inner diameter of the open tire is a through hole, and the inner and outer diameters are cut through to form an opening. The open tire is embedded in the multi-petal tire with adjustable opening, and the clamp is clamped on the outer circumference of the multi-petal tire. Compared with the prior art, the fixture designed by the utility model utilizes the opening contraction, opening and the action of the clamp to clamp and press the petal ring. The inner diameter processing of the product petal ring after assembly can be realized on ordinary turning, milling, boring and grinding machines, and the coaxiality of the product can be better controlled after controlling the matching dimensions of each part, thereby improving the processability. However, the existing clamps need to be tightened and installed manually multiple times, and each person's operating level is different, and the clamping size is relatively fixed; secondly, the clamp tightening operation is complicated, and sometimes it is difficult for the operator to complete it independently, the clamping operation is inconvenient, and the clamping efficiency is low. Utility Model Content

[0003] The utility model aims to provide a fixture for machining the inner diameter of a multi-petal ring, aiming to solve the above-mentioned problem.

[0004] The utility model is mainly realized through the following technical solutions:

[0005] The clamp for processing the inner diameter of a multi-petal ring comprises a base, a clamping mechanism, and a clamping plate, a guide plate and a fixed plate arranged in sequence from top to bottom, wherein the clamping plate is installed on the top of the base, the guide plate is rotatably sleeved on the base, and the fixed plate is slidably sleeved on the base, the base is provided with a threaded ring, the top of the threaded ring abuts against the fixed plate; a plurality of pre-clamping seats sliding along the radial direction are arranged on the circumferential side of the clamping plate, a hollow structure is formed between adjacent pre-clamping seats, and an arc groove is arranged on the top of the pre-clamping seat; a plurality of clamping mechanisms are arranged on the circumferential side between the guide plate and the fixed plate; the clamping mechanism comprises a seat body and a linear drive mechanism arranged on the seat body, two clamping arms are arranged on the linear drive mechanism, the linear drive mechanism is used to drive the two clamping arms to move toward or away from each other, the bottom of the clamping arm passes through the guide groove on the guide plate and is connected to the linear drive mechanism, and a multi-petal ring is clamped between adjacent clamping arms.

[0006] In order to better realize the utility model, further, the clamping plate includes a positioning seat and a plurality of sliding arms, the positioning seat is connected to the top of the base, a plurality of sliding arms are arranged on the peripheral side of the positioning seat, a sliding seat is slidably arranged on the sliding arm, and the sliding seat is hinged to the pre-clamping seat.

[0007] In order to better realize the utility model, further, an elastic clamping layer is provided on the inner side wall of the arc-shaped groove.

[0008] In order to better realize the utility model, further, a bearing seat is mounted on the base, the guide plate is mounted on the bearing seat, and a plurality of guide grooves are arranged along the circumference of the guide plate, one end of the seat body is clamped with the bearing seat, the bottom of the seat body is detachably connected with the fixed plate, and the top side wall is clamped with the bottom of the guide groove.

[0009] In order to better realize the utility model, further, the side wall of the bearing seat is provided with a plurality of snap-in grooves along the circumferential direction, and a snap-in protrusion is correspondingly provided at one end of the seat body; and the fixing plate is provided with a plurality of groups of threaded holes along the circumferential side corresponding to the seat body.

[0010] In order to better realize the utility model, further, the linear drive mechanism includes a threaded rod and a crank, the top of the seat body is rotatably provided with a threaded rod, one end of the threaded rod extends out of the seat body and is connected to the crank; the threaded rod is provided with two nut seats with opposite thread rotation directions, and a clamping arm is installed on the nut seat.

[0011] In order to better realize the utility model, further, the top of the nut seat passes through the guide groove on the guide plate and is connected to the clamping arm, and the top of the nut seat is slidably connected to the guide groove.

[0012] In order to better realize the utility model, further, the clamping arm is a columnar structure, and an elastic rubber layer is provided on the clamping side.

[0013] When the utility model is used, the multi-petal ring is respectively inserted into the pre-clamping seat on the clamping disk, and the multi-petal ring is pre-fixed by the pre-clamping seat; then the guide disk is rotated so that the guide groove is located at the hollow part between adjacent pre-clamping seats, and the clamping mechanism is fixed on the fixed disk. At this time, the clamping arms on the seat body pass through the guide groove and are located on both sides of the multi-petal ring. The threaded ring is rotated to make the fixed disk close to the guide disk, and finally the seat body is pressed and fixed between the guide disk and the fixed disk. At this time, the linear mechanism is driven so that the two adjacent clamping arms clamp and fix the multi-petal ring, and finally the overall clamping position of the multi-petal ring is accurately fixed.

[0014] The beneficial effects of the utility model are as follows:

[0015] (1) When the utility model is in use, the positions of the clamping plate, the guide plate, the fixing plate and the clamping mechanism can be fixed in advance. When in use, the position of the pre-clamping seat and the position of the adjacent clamping arm can be adjusted according to the inner diameter size of different multi-petal rings, so that the multi-petal ring can be clamped quickly and the operation is simple. The linear drive mechanism can be uniformly controlled by a micro motor to realize automation, effectively improve the clamping efficiency of the multi-petal ring, and has good practicality.

[0016] (2) The utility model can adjust the position of the sliding seat through the sliding arm, thereby adjusting the radial position and steering angle of the pre-clamping seat. The elastic clamping layer is provided to facilitate clamping of multi-petal rings of different thicknesses and curvatures, while also protecting the multi-petal rings and ensuring the stability of the inner diameter processing of the multi-petal rings;

[0017] (3) The utility model is connected to the bearing seat by the seat body, and the top of the seat body is connected to the bottom of the guide groove, so that the seat body and the guide groove can move synchronously. At this time, the top of the nut seat extends into the guide groove and is slidably connected to the guide groove. The fixing plate and the guide plate are fastened by the threaded ring, and the seat body is installed in a limited position. Then the clamping arm is hingedly installed with the top of the nut seat, and the clamping arm is driven to move closer by the linear drive mechanism to fix and clamp the multi-petal ring. The utility model has a simple structure, convenient operation, and good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the clamping plate, the guide plate and the fixed plate;

[0019] Figure 2 It is a top view of the fixture used for machining the inner diameter of a multi-petal ring of the utility model;

[0020] Figure 3 It is a schematic diagram of the connection structure between the base body and the clamping arm of the clamping mechanism;

[0021] Figure 4 It is a schematic diagram of the connection structure between the bearing seat and the base;

[0022] Figure 5 It is a schematic diagram of the connection structure between the positioning seat and the sliding arm.

[0023] Wherein: 1-base, 2-clamping plate, 3-guide plate, 4-fixed plate, 5-clamping mechanism, 6-bearing seat, 7-pre-clamping seat, 8-positioning seat, 9-sliding arm, 10-guide groove, 11-clamping arm, 12-seat body, 13-threaded ring. DETAILED DESCRIPTION

[0024] Embodiment 1:

[0025] Fixtures for machining the inner diameter of multi-valve rings, such as Figure 1-Figure 4As shown, it includes a base 1, a clamping mechanism 5, and a clamping disk 2, a guide disk 3, and a fixed disk 4 arranged in sequence from top to bottom. The peripheral side of the clamping disk 2 is provided with a plurality of pre-clamping seats 7 that slide in the radial direction, and there is a hollow structure between adjacent pre-clamping seats 7. The top of the pre-clamping seat 7 is provided with an arc groove. The top of the base 1 is fixedly mounted with a clamping disk 2 by screws, and the middle part of the base 1 is sleeved with a guide disk 3 and a fixed disk 4, and a clamping mechanism 5 is fixedly arranged between the guide disk 3 and the fixed disk 4. The clamping mechanism 5 includes a seat body 12 and a linear drive mechanism arranged on the seat body 12, and two clamping arms 11 are arranged on the linear drive mechanism, and the linear drive mechanism is used to drive the two clamping arms 11 to move toward or away from each other, and the top of the clamping arm 11 passes through the guide groove 10 on the guide disk 3 and extends into the hollow part of the clamping disk 2, and a multi-petal ring is clamped between adjacent clamping arms 11.

[0026] Preferably, if Figure 5 As shown, the clamping plate 2 includes a positioning seat 8 and a plurality of sliding arms 9. The positioning seat 8 is provided with a plurality of sliding arms 9 on its circumferential side. The positioning seat 8 can be integrally formed with the sliding arms 9 or detachably connected. Further, the positioning seat 8 is provided with a plurality of clamping grooves on its circumferential side, and the sliding arms 9 are clamped with the clamping grooves. The position and number of the sliding arms 9 can be set according to the segmentation of the multi-petal ring. And the position and number of the clamping mechanism 5 are set accordingly.

[0027] Preferably, the middle part of the base 1 is sleeved with a bearing seat 6, and the guide plate 3 is sleeved and installed on the bearing seat 6. The guide plate 3 can be rotated to make the guide groove 10 located in the hollow part between the adjacent pre-clamping seats 7, so as to facilitate the clamping arm 11 to clamp the multi-petal ring. At this time, the seat body 12 is fixedly installed on the fixed plate 4, and the clamping arm 11 passes through the guide groove 10 and is located in the hollow part. By rotating the threaded ring 13, the seat body 12 is fastened and installed between the guide plate 3 and the fixed plate 4. When rotating the threaded ring 13, it is necessary to pre-fix the position of the clamping arm 11 so that the fixed plate 4 can be stably lifted and lowered.

[0028] Preferably, the linear drive mechanism includes a threaded rod and a crank, a threaded rod is rotatably provided on the top of the seat body 12, one end of the threaded rod extends out of the seat body 12 and is connected to the crank; two nut seats with opposite thread rotation directions are provided on the threaded rod, and a clamping arm 11 is installed on the nut seat.

[0029] Preferably, the inner side wall of the arc-shaped groove is provided with an elastic clamping layer. The clamping arm 11 is a columnar structure, and an elastic rubber layer is provided on the clamping side. Figure 3 As shown, the clamping arm 11 includes a clamping seat, and a clamping column is arranged on one side of the clamping seat. A mounting cavity is arranged inside the clamping seat, and a clamping column is arranged outside the mounting cavity. The clamping column is made of elastic material.

[0030] When the utility model is used, the multi-petal ring is respectively inserted into the pre-clamping seat 7 on the clamping plate 2, and the multi-petal ring is pre-fixed by the pre-clamping seat 7; then the guide plate 3 is rotated so that the guide groove 10 is located in the hollow part between the adjacent pre-clamping seats 7, and the clamping mechanism 5 is fixed on the fixed plate 4, at which time the clamping arms 11 on the seat body 12 pass through the guide groove 10 and are located on both sides of the multi-petal ring. The threaded ring 13 is rotated so that the fixed plate 4 is close to the guide plate 3, and finally the seat body 12 is pressed and fixed between the guide plate 3 and the fixed plate 4, and the linear mechanism is driven at this time so that the two adjacent clamping arms 11 clamp and fix the multi-petal ring, and finally the overall clamping position of the multi-petal ring is accurately fixed.

[0031] When the utility model is in use, the positions of the clamping plate 2, the guide plate 3, the fixed plate 4 and the clamping mechanism 5 can be pre-fixed. When in use, the position of the pre-clamping seat 7 and the position of the adjacent clamping arm 11 can be adjusted according to the inner diameter size of different multi-petal rings. The multi-petal rings can be clamped quickly and the operation is simple. The linear drive mechanism can be uniformly controlled and driven by a micro motor to achieve automation, effectively improve the clamping efficiency of the multi-petal rings, and have good practicality.

[0032] Embodiment 2:

[0033] Fixtures for machining the inner diameter of multi-valve rings, such as Figure 1-Figure 5 As shown, it includes a base 1, a clamping mechanism 5, and a clamping plate 2, a guide plate 3, and a fixed plate 4 arranged in sequence from top to bottom. The clamping plate 2 is detachably mounted on the top of the base 1, and a plurality of radially sliding pre-clamping seats 7 are arranged on the circumference of the clamping plate 2. There is a hollow structure between adjacent pre-clamping seats 7, and an arc-shaped groove is arranged on the top of the pre-clamping seat 7. A bearing seat 6 is sleeved and installed in the middle of the base 1, and a guide plate 3 is sleeved and installed on the outer side of the bearing seat 6. A fixed plate 4 is slidably mounted on the base 1, and a threaded ring 13 is arranged at the bottom of the fixed plate 4. The threaded ring 13 is threadedly connected to the base 1 for realizing the lifting and lowering of the fixed plate 4.

[0034] The bearing seat 6 is provided with a plurality of engaging grooves along the circumference thereof, and one end of the seat body 12 is provided with an engaging protrusion correspondingly, and the top of the seat body 12 is engaged with the bottom of the guide groove 10. Figure 1 and Figure 3 As shown, a threaded rod is rotatably mounted on the top of the seat body 12, and one end of the threaded rod extends out of the seat body 12 and is connected to the driving mechanism. The threaded rod is provided with two nut seats with opposite thread rotation directions, and the nut seats slide through the guide groove 10 and are connected to the clamping arm 11. Preferably, the driving mechanism can be a micro drive motor or a crank. The clamping arm 11 is hinged or clamped to the top of the nut seat.

[0035] Preferably, the bottom of the seat body 12 is detachably connected to the fixing plate 4, and the fixing plate 4 is provided with a plurality of groups of threaded holes arranged in a radial direction along the circumference thereof.

[0036] Preferably, the clamping plate 2 includes a positioning seat 8 and a plurality of sliding arms 9, the positioning seat 8 is connected to the top of the base 1, and a plurality of sliding arms 9 are arranged on the circumference of the base 1, and a sliding seat is slidably arranged on the sliding arm 9, and the sliding seat is hinged to the pre-clamping seat 7. Preferably, an elastic clamping layer is arranged on the inner side wall of the arc-shaped groove. The clamping arm 11 is a columnar structure, and an elastic rubber layer is arranged on the clamping side.

[0037] When the utility model is in use, the multi-petal ring is respectively inserted into the arc groove of the pre-clamping seat 7 on the clamping plate 2, and the multi-petal ring is pre-fixed by the pre-clamping seat 7. Then the guide plate 3 is rotated so that the guide groove 10 is located in the hollow part between the adjacent pre-clamping seats 7, one end of the clamping mechanism 5 is clamped with the bearing seat 6, and the top is clamped with the bottom of the guide groove 10, and then the threaded ring 13 is rotated so that the fixed plate 4 tightens the seat body 12 of the clamping mechanism 5. Then the seat body 12 is fixed to the fixed plate 4 by bolts, at which time the top of the nut seat on the seat body 12 slides through the guide groove 10 and is connected to the clamping arm 11, and the two clamping arms 11 are located on both sides of the multi-petal ring. At this time, the linear mechanism is driven so that the two adjacent clamping arms 11 clamp and fix the multi-petal ring, and finally the overall clamping position of the multi-petal ring is accurately fixed.

[0038] When the utility model is in use, the positions of the clamping plate 2, the guide plate 3, the fixed plate 4 and the clamping mechanism 5 can be pre-fixed. When in use, the position of the pre-clamping seat 7 and the position of the adjacent clamping arm 11 can be adjusted according to the inner diameter size of different multi-petal rings. The multi-petal rings can be clamped quickly and the operation is simple. The linear drive mechanism can be uniformly controlled and driven by a micro motor to achieve automation, effectively improve the clamping efficiency of the multi-petal rings, and have good practicality.

[0039] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A fixture for machining the inner diameter of a multi-petal ring, characterized in that: The invention comprises a base (1), a clamping mechanism (5), and a clamping plate (2), a guide plate (3), and a fixed plate (4) which are arranged in sequence from top to bottom, wherein the clamping plate (2) is mounted on the top of the base (1), the guide plate (3) is rotatably sleeved on the base (1), and the fixed plate (4) is slidably sleeved on the base (1), and a threaded ring (13) is arranged on the base (1), and the top of the threaded ring (13) abuts against the fixed plate (4); a plurality of radially sliding pre-clamping seats (7) are arranged on the circumferential side of the clamping plate (2), and a hollow structure is formed between adjacent pre-clamping seats (7). The top of the pre-clamping seat (7) is provided with an arc-shaped groove; a plurality of clamping mechanisms (5) are provided on the circumferential side between the guide plate (3) and the fixed plate (4); the clamping mechanism (5) comprises a seat body (12) and a linear drive mechanism provided on the seat body (12); two clamping arms (11) are provided on the linear drive mechanism, and the linear drive mechanism is used to drive the two clamping arms (11) to move towards or away from each other; the bottom of the clamping arm (11) passes through the guide groove (10) on the guide plate (3) and is connected to the linear drive mechanism; a multi-petal ring is clamped between adjacent clamping arms (11).

2. The fixture for machining the inner diameter of a multi-petal ring according to claim 1, characterized in that: The clamping plate (2) comprises a positioning seat (8) and a plurality of sliding arms (9); the positioning seat (8) is connected to the top of the base (1); a plurality of sliding arms (9) are arranged on the circumference of the positioning seat (8); a sliding seat is slidably arranged on the sliding arm (9); and the sliding seat is hinged to the pre-clamping seat (7).

3. The fixture for machining the inner diameter of a multi-petal ring according to claim 1 or 2, characterized in that: The inner side wall of the arc-shaped groove is provided with an elastic clamping layer.

4. The fixture for machining the inner diameter of a multi-petal ring according to claim 1, characterized in that: A bearing seat (6) is sleeved and mounted on the base (1), the guide plate (3) is sleeved and mounted on the bearing seat (6), and a plurality of guide grooves (10) are provided along the circumference of the guide plate (3), one end of the seat body (12) is clamped with the bearing seat (6), the bottom of the seat body (12) is detachably connected to the fixed plate (4), and the top side wall is clamped with the bottom of the guide groove (10).

5. The fixture for machining the inner diameter of a multi-petal ring according to claim 4, characterized in that: The side wall of the bearing seat (6) is provided with a plurality of snap-fit ​​grooves along the circumferential direction, and one end of the seat body (12) is correspondingly provided with a snap-fit ​​protrusion; and the fixing plate (4) is provided with a plurality of groups of threaded holes along the circumferential side corresponding to the seat body (12).

6. The fixture for machining the inner diameter of a multi-petal ring according to claim 1, characterized in that: The linear drive mechanism comprises a threaded rod and a crank; the threaded rod is rotatably arranged on the top of the seat body (12); one end of the threaded rod extends out of the seat body (12) and is connected to the crank; two nut seats with opposite thread rotation directions are arranged on the threaded rod, and a clamping arm (11) is installed on the nut seat.

7. The fixture for machining the inner diameter of a multi-petal ring according to claim 6, characterized in that: The top of the nut seat passes through the guide groove (10) on the guide plate (3) and is connected to the clamping arm (11), and the top of the nut seat is slidably connected to the guide groove (10).

8. The fixture for machining the inner diameter of a multi-petal ring according to claim 6 or 7, characterized in that: The clamping arm (11) is a columnar structure, and an elastic rubber layer is provided on the clamping side.

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