CN112828616A - Positioning and supporting clamp for thin-wall long-cylinder type part and using method thereof - Google Patents
Positioning and supporting clamp for thin-wall long-cylinder type part and using method thereof Download PDFInfo
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- CN112828616A CN112828616A CN202110095329.0A CN202110095329A CN112828616A CN 112828616 A CN112828616 A CN 112828616A CN 202110095329 A CN202110095329 A CN 202110095329A CN 112828616 A CN112828616 A CN 112828616A
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000006835 compression Effects 0.000 claims abstract description 39
- 238000007906 compression Methods 0.000 claims abstract description 39
- 238000009434 installation Methods 0.000 claims description 7
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 2
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 2
- 241001330002 Bambuseae Species 0.000 claims description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 2
- 239000011425 bamboo Substances 0.000 claims description 2
- 238000003754 machining Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention relates to a positioning and supporting clamp for a thin-wall long-cylinder part and a using method thereof. The matching precision of the thin-wall long-cylinder annular part and the clamp is effectively improved, and the problems that the part is deformed greatly after being processed and the processing precision is low due to the fact that the clamping fit clearance of the part and the clamp is large, or the standard concentricity of the clamp and the thin-wall long-cylinder annular part after clamping is poor are solved or reduced. The technical scheme of the invention comprises a disc-shaped clamp base, wherein the center of the clamp base is provided with a positioning ring, and the clamp base is uniformly provided with 4 supporting columns; 4 ejector blocks are uniformly distributed on the circumference of the positioning ring, the outer side face of each ejector block is compressed through a compression screw, each compression screw penetrates through the corresponding support column, a second screw and a third screw are respectively arranged at the upper end and the lower end of each compression screw of each support column, a first compression spring is arranged between the nut of the second screw and the support column, a second compression spring is arranged between the nut of the third screw and the support column, and the three end parts of each second screw and each third screw are respectively arranged in the corresponding ejector block and connected with the ejector blocks.
Description
Technical Field
The invention relates to the technical field of aeroengine part machining, in particular to a positioning and supporting clamp for a thin-wall long-cylinder part and a using method thereof.
Background
Thin-walled annular parts are widely used in the manufacture of aircraft engine casings, seal rings and combustor related parts. For thin-wall annular parts, a plurality of positioning and processing methods are involved, but for thin-wall long-cylinder parts, because the rigidity of the parts is poor, the reliability of parts clamping and pressing parts is poor, the conventional positioning fixture cannot effectively support and clamp the parts, the thin-wall long-cylinder parts are greatly influenced by the pressing force and the cutting force in the processing process, and particularly in the parts with poor thin walls and rigidity of the parts, the deformation is large after the processing, and the processing precision is low.
Therefore, in order to improve the positioning reliability of the thin-wall long cylindrical part and ensure the part machining precision, the matching reliability of the long cylindrical part and the positioning fixture must be improved by designing a new positioning support fixture, so that the aims of improving the positioning state and meeting the part machining requirement are fulfilled.
Disclosure of Invention
The invention aims to solve the problems, provides a positioning and supporting clamp for a thin-wall long cylindrical part and a using method thereof, effectively improves the matching precision of the thin-wall long cylindrical annular part and the clamp, and avoids or reduces the problems of large deformation and low processing precision of the part after processing caused by large clamping fit clearance between the part and the clamp or poor reference concentricity of the clamp and the thin-wall long cylindrical annular part after clamping.
In order to solve the problems in the prior art, the technical scheme of the invention is as follows: the utility model provides a be used for long section of thick bamboo type part location support fixture of thin wall which characterized in that: the clamp comprises a disc-shaped clamp base, wherein a positioning ring is arranged at the center of the clamp base, and 4 supporting columns are uniformly distributed on the clamp base;
the circumference of holding ring on the equipartition be provided with 4 kicking blocks, every kicking block lateral surface compresses tightly through housing screw, every housing screw passes the pillar setting, the lower extreme is provided with screw two and screw three respectively on the housing screw of every pillar, be provided with pressure spring one between the nut of screw two and the pillar, be provided with pressure spring two between the nut of screw three and the pillar, every screw two and screw three-terminal portion do not set up in the kicking block and are connected with the kicking block.
Furthermore, the center of the clamp base is provided with a lightening hole.
The use method of the positioning and supporting clamp for the thin-wall long cylindrical part comprises the following steps:
1) installing a positioning support clamp on a machine tool, clamping a clamp base by using a four-jaw chuck during installation, and aligning a positioning excircle and a positioning end face of a positioning ring by using a dial indicator during installation;
2) the compression screws are rotated anticlockwise one by one, the first compression spring and the second compression spring automatically expand, the second screw and the third screw are pushed to move along the radial direction, and the second screw and the third screw pull the ejector block to slide outwards, so that the positioning surface at the lower end of the ejector block moves in the direction far away from the circle center of the clamp base;
3) installing a thin-wall long cylinder annular piece, firmly installing the thin-wall long cylinder annular piece on the positioning ring, enabling the rear end face of the thin-wall long cylinder annular piece to be tightly attached to the positioning end face of the positioning ring, and enabling the inner hole positioning face of the thin-wall long cylinder annular piece to be attached to the outer circle positioning face of the positioning ring after the thin-wall long cylinder annular piece is installed on the positioning ring;
4) the compression screw is rotated clockwise, the compression screw pushes the jacking block to move, and the outer circle positioning surface of the thin-wall long cylindrical annular part is tightly attached to the lower end positioning surface of the jacking block;
5) and installing a cutter and processing the thin-wall long cylindrical annular piece.
Compared with the prior art, the invention has the following advantages:
1) according to the invention, the positioning ring is arranged, so that the part is firmly arranged on the positioning ring, the rear end face of the part is tightly attached to the positioning end face of the positioning ring, and the installation gap generated between the rear end face of the part and the positioning face of the positioning ring is eliminated or weakened, thus the axial matching precision of the positioning clamp and the ring-shaped piece is improved, and the deformation of the end face of the part during processing is controlled; after the ring-shaped piece is arranged on the positioning ring, the inner hole positioning surface of the ring-shaped piece is attached to the outer circle positioning surface of the positioning ring, so that the radial matching rigidity of the clamp and the ring-shaped piece is improved, and the deformation of parts during compression is controlled;
2) the invention sets up 4 ejector blocks along the radial direction, the lower end face of the ejector block is in the shape of a circular arc fitted with the excircle of the processed part, the outer circular surface of the part is tightly fitted with the lower end cambered surface of the ejector block by rotating the compression screw, so as to eliminate or weaken the gap between the outer circular surface of the part and the lower end face of the ejector block, thus improving the radial fit precision of the clamp and the part, and controlling the deformation of the excircle of the part when being compressed;
3) according to the invention, the screw and the compression spring are arranged, the compression screw is rotated, the screw pushes the ejector block to stably slide along the radial direction, so that the ejector block is tightly attached to the ring-shaped member, after the compression screw is loosened, the compression spring automatically expands to drive the screw to move outwards along the radial direction, and the screw pulls the ejector block to slide outwards, so that the lower end surface of the ejector block is separated from the excircle of the part, and the assembly and disassembly efficiency of the ring-shaped member is improved.
Drawings
FIG. 1 is a schematic view of a fixture base;
FIG. 2 is a schematic structural view;
FIG. 3 is a schematic view of positioning;
FIG. 4 is a schematic view of a strut;
description of reference numerals: 1-a clamp base, 2-a first positioning hole, 3-a first threaded hole group, 4-a second threaded hole group, 5-a second positioning hole, 6-a lightening hole, 7-a support, 8-a first screw, 9-a compression screw, 10-a second screw, 11-a third screw, 12-a first compression spring, 13-a second compression spring, 14-a top block, 15-a positioning ring, 16-a positioning pin, 17-a fourth screw, 18-a thin-wall long-cylinder annular part, 19-a first connecting hole, 20-a second connecting hole and 21-a third threaded hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment provides a positioning and supporting clamp for a thin-wall long-cylinder part, which comprises a disc-shaped clamp base 1, wherein a lightening hole 6 is formed in the center of the clamp base 1, a first positioning hole 2 and a first threaded hole group 3 are uniformly formed in the disc-shaped clamp base 1 along the circumferential direction, the first threaded hole group 3 is uniformly distributed along the circumferential direction of the first positioning hole 2, a second threaded hole group 4 and a second positioning pin hole 5 are uniformly formed in the disc-shaped clamp base 1 along the circumferential direction, and the second positioning pin holes 5 are uniformly distributed along the circumferential direction 2 of the base 1;
the center of the clamp base 1 is provided with a positioning ring 15, the positioning ring 15 uniformly penetrates through a screw four 17 along the circumferential direction, the other end of the screw four 17 is connected with a threaded hole group two 4, and the positioning ring 15 is further symmetrically provided with positioning pins 16 along the circumferential direction and used for assembling and positioning during clamp manufacturing and ensuring the relative relation between the base 1 and the positioning ring 15.
4 ejector blocks 14 are uniformly distributed on the circumference of the positioning ring 15, the outer side surface of each ejector block 14 is compressed by a compression screw 9, each compression screw 9 penetrates through the corresponding support 7, the lower end of each compression screw 9 is attached to the upper end of the corresponding ejector block 14, each support 7 is fixedly connected with the corresponding clamp base 1 through a first threaded hole group 3 and a screw, the supports 7 are uniformly distributed on the corresponding clamp base 1, the upper end and the lower end of each compression screw of each support 7 are respectively provided with a second screw 10 and a third screw 11, a first compression spring 12 is arranged between the nut of the second screw 10 and the corresponding support 7, a second compression spring 13 is arranged between the nut of the third screw 11 and the corresponding support 7, the end portions of each second screw 10 and the corresponding third screw 11 are respectively arranged in the corresponding ejector block 14 and connected with the corresponding ejector block 14, the corresponding support 7 is arranged in the first positioning hole 2 in a penetrating manner, the first screw 8 is arranged in the corresponding support 7 and the corresponding, A second connecting hole 20 and a third threaded hole 21, as shown in fig. 4; the second screw 10 is inserted into the first connecting hole 19.
The number of the first positioning holes 2 is 4, the number of the first threaded holes 3 is 12, the number of the second threaded holes 4 is 4, and the number of the second positioning holes 5 is 2.
The number of the support columns 7 is 4, the number of the first screws 8 is 12, the number of the compression screws 9 is 4, the number of the second screws 10 is 4, the number of the third screws 11 is 4, the number of the first compression springs 12 is 4, the number of the second compression springs 13 is 4, and the number of the ejector blocks 14 is 4.
The number of the screws 17 is 4, and the number of the pins 16 is 2.
A use method of a positioning and supporting clamp for a thin-wall long-cylinder part comprises the following steps:
the first step is as follows: the clamp is arranged on a machine tool, a four-jaw chuck is used for clamping a clamp base 1 during installation, and a positioning excircle and a positioning end face of a positioning ring 15 need to be aligned during installation;
the second step is that: the compression screws 9 are rotated anticlockwise one by one, the first compression spring 12 and the second compression spring 13 automatically expand, the second screw 10 and the third screw 11 are pushed to move along the radial direction, and the second screw 10 and the third screw 11 pull the ejector block to slide outwards, so that the positioning surface at the lower end of the ejector block moves along the direction far away from the circle center of the clamp base;
the third step: installing a thin-wall long cylinder annular part 18, firmly installing the thin-wall long cylinder annular part 18 on the positioning ring 15, and enabling the rear end face of the thin-wall long cylinder annular part 18 to be tightly attached to the positioning end face of the positioning ring 15, so that a positioning gap generated between the rear end face of a part and the positioning face of the positioning ring 15 is eliminated or weakened, the axial matching precision of a positioning clamp and the thin-wall long cylinder annular part 18 is improved, and the deformation generated when the end face of the thin-wall long cylinder annular part 18 is processed is controlled; after the thin-wall long cylindrical annular part 18 is arranged on the positioning ring 15, the inner hole positioning surface of the thin-wall long cylindrical annular part 18 is attached to the outer circle positioning surface of the positioning ring 15, so that the radial matching rigidity of the clamp and the thin-wall long cylindrical annular part 18 is improved, and the deformation of parts during pressing is controlled;
the fourth step: the compression screw 9 is rotated clockwise, the compression screw pushes the top block 14 to move, so that the excircle positioning surface of the thin-wall long cylindrical annular part 18 is tightly attached to the lower end positioning surface of the top block, and the positioning gap between the excircle positioning surface of the thin-wall long cylindrical annular part and the lower end positioning surface of the top block is eliminated or weakened, so that the radial matching precision of the positioning fixture and the annular part is improved, and the deformation of the thin-wall long cylindrical annular part during compression is controlled;
the fifth step: and installing a cutter and processing the thin-wall long cylindrical annular piece.
It is to be understood that the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make various changes, modifications, additions or substitutions within the spirit and scope of the present invention.
Claims (3)
1. The utility model provides a be used for long section of thick bamboo type part location support fixture of thin wall which characterized in that: the clamp comprises a disc-shaped clamp base (1), wherein a positioning ring (15) is arranged at the center of the clamp base (1), and 4 supporting columns (7) are uniformly distributed on the clamp base (1);
the circumference of holding ring (15) on the equipartition be provided with 4 kicking blocks (14), every kicking block (14) lateral surface compresses tightly through housing screw (9), every housing screw (9) pass pillar (7) and set up, the housing screw upper and lower extreme of every pillar (7) is provided with screw two (10) and screw three (11) respectively, be provided with pressure spring (12) between the nut of screw two (10) and pillar (7), be provided with pressure spring two (13) between the nut of screw three (11) and pillar (7), every screw two (10) and screw three (11) tip set up respectively in kicking block (14) and are connected with kicking block (14).
2. The positioning and supporting clamp for the thin-wall long-cylinder type part as claimed in claim 1, is characterized in that: the center of the clamp base (1) is provided with a lightening hole (6).
3. The use method of the positioning and supporting clamp for the thin-wall long-cylinder part according to claim 1 is characterized in that: the method comprises the following steps:
1) the positioning support clamp is arranged on a machine tool, a four-jaw chuck is used for clamping a clamp base (1) during installation, and a dial indicator is used for centering a positioning excircle and a positioning end face of a positioning ring (15) during installation;
2) the compression screws (9) are rotated anticlockwise one by one, the first compression spring (12) and the second compression spring (13) automatically expand, the second screw (10) and the third screw (11) are pushed to move along the radial direction, and the second screw (10) and the third screw (11) pull the ejector block (14) to slide outwards, so that the positioning surface at the lower end of the ejector block (14) moves along the direction far away from the center of the clamp base;
3) installing a thin-wall long cylinder annular piece (18), firmly installing the thin-wall long cylinder annular piece (18) on a positioning ring (15), enabling the rear end face of the thin-wall long cylinder annular piece (18) to be tightly attached to the positioning end face of the positioning ring (15), and attaching the inner hole positioning face of the thin-wall long cylinder annular piece (18) to the excircle positioning face of the positioning ring (15) after the thin-wall long cylinder annular piece (18) is installed on the positioning ring (15);
4) the compression screw (9) is rotated clockwise, the compression screw pushes the top block (14) to move, and the excircle positioning surface of the thin-wall long cylindrical annular part (18) is tightly attached to the lower end positioning surface of the top block (14);
5) and installing a cutter and processing the thin-wall long cylindrical annular piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110095329.0A CN112828616A (en) | 2021-01-25 | 2021-01-25 | Positioning and supporting clamp for thin-wall long-cylinder type part and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110095329.0A CN112828616A (en) | 2021-01-25 | 2021-01-25 | Positioning and supporting clamp for thin-wall long-cylinder type part and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN112828616A true CN112828616A (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110095329.0A Pending CN112828616A (en) | 2021-01-25 | 2021-01-25 | Positioning and supporting clamp for thin-wall long-cylinder type part and using method thereof |
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| CN (1) | CN112828616A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113695956A (en) * | 2021-08-09 | 2021-11-26 | 哈尔滨电气动力装备有限公司 | Shielded motor supports a section of thick bamboo machining tool |
| CN114309977A (en) * | 2021-12-23 | 2022-04-12 | 上海新力动力设备研究所 | Laser cutting method for ultrahigh-strength porous thin-wall skin |
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| CN212192189U (en) * | 2020-05-27 | 2020-12-22 | 京鸿石油钻采工程技术有限公司 | Auxiliary supporting device for thin-wall workpiece machining |
| CN214816567U (en) * | 2021-01-25 | 2021-11-23 | 西安西航集团莱特航空制造技术有限公司 | Positioning and supporting clamp for thin-wall long-cylinder part |
-
2021
- 2021-01-25 CN CN202110095329.0A patent/CN112828616A/en active Pending
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| CN109877613A (en) * | 2019-02-01 | 2019-06-14 | 吉林化工学院 | A kind of deformation controller in hole for processing aero-engine casing end face lace structure |
| CN210060441U (en) * | 2019-05-27 | 2020-02-14 | 江苏特纳马智能制造有限公司 | Thin metal processing clamp |
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| CN214816567U (en) * | 2021-01-25 | 2021-11-23 | 西安西航集团莱特航空制造技术有限公司 | Positioning and supporting clamp for thin-wall long-cylinder part |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113695956A (en) * | 2021-08-09 | 2021-11-26 | 哈尔滨电气动力装备有限公司 | Shielded motor supports a section of thick bamboo machining tool |
| CN114309977A (en) * | 2021-12-23 | 2022-04-12 | 上海新力动力设备研究所 | Laser cutting method for ultrahigh-strength porous thin-wall skin |
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