CN112338603A - Auxiliary machining clamp and machining method for open thin-wall ring piece - Google Patents
Auxiliary machining clamp and machining method for open thin-wall ring piece Download PDFInfo
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- CN112338603A CN112338603A CN202011294445.7A CN202011294445A CN112338603A CN 112338603 A CN112338603 A CN 112338603A CN 202011294445 A CN202011294445 A CN 202011294445A CN 112338603 A CN112338603 A CN 112338603A
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- ring
- open thin
- machine tool
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- main shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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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
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
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Abstract
The invention provides an auxiliary processing clamp for an open thin-wall ring piece and a processing method thereof. The machining method comprises the steps of using the auxiliary machining clamp and clamping a plurality of blanks, and machining the blanks into the closed ring piece through a machine tool; then cutting off the closed ring piece from the radial direction of the closed ring piece to obtain a plurality of open thin-walled ring pieces; by adopting the technical scheme of the invention, the blank is clamped and fixed by adopting the special clamp, the integral rigidity of the blank is improved, the processing difficulty is reduced, a pair of clamps can clamp a plurality of blanks, the yield is improved, the clamp can also be applied to the vacuum heat treatment process, the thermal deformation of a workpiece is reduced, and the quality of a finished product is improved.
Description
Technical Field
The invention relates to the technical field of machining processes, in particular to an auxiliary machining clamp for an open thin-wall ring piece and a machining method of the auxiliary machining clamp.
Background
With the continuous development of machining process technology, people have higher and higher requirements on the aspects of the shape, the performance and the like of mechanical parts, in the machining process of a certain type of opening thin-wall ring piece, the overall outline shape and the size of the part are extremely large, the width size of the opening end of the part under the constrained condition is required to be 3.56 +/-0.25, in a free state, the width size of the opening end of the part is required to be 49.022 +/-12.7, and the overall outline size needs to reach phi 889.524 +/-0.127. Due to the fact that the parts are large in overall dimension, thin in wall, poor in rigidity and poor in machining stability, the machining precision of the dimension is difficult to guarantee by adopting a conventional cutting machining method, and the rejection rate of products is high, a novel process auxiliary clamp and a novel machining process method are urgently needed to be developed.
Disclosure of Invention
In order to solve the technical problem, the invention provides an auxiliary processing clamp for an open thin-wall ring piece and a processing method thereof.
The invention is realized by the following technical scheme.
The invention provides an auxiliary processing clamp for an open thin-walled ring piece, which comprises a base and a cover plate, wherein the base is in a closed circular ring shape integrally, a flange is arranged on the peripheral surface of the base, the cover plate is in a closed circular ring shape integrally, a flange is arranged on the peripheral surface of the cover plate, and when the base and the cover plate are connected together through a fastening piece, the flange and the flange are oppositely arranged, so that a plurality of open thin-walled ring pieces can be clamped between the flange and the flange in a superposition manner.
The number of the fasteners is multiple, and the multiple fasteners are arranged in a circumferential array mode by taking the central axis of the base or the cover plate as a rotation center.
The number of the fasteners is more than 6.
The fastener is a bolt.
The projection of the axial section of the cover plate is integrally L-shaped, and when the base and the cover plate are connected together through a fastener, the flange is also surrounded on the peripheral surface of the base.
The projection of the axial section of the base is L-shaped as a whole.
The base is made of stainless steel.
In addition, the invention also provides a processing method of the open thin-wall ring piece, which comprises the following steps:
the method comprises the following steps: the auxiliary processing fixture for the open thin-walled ring part is used, a plurality of blanks corresponding to the open thin-walled ring part are provided, the whole blank is in a closed circular ring shape, and the plurality of blanks are clamped between the flange and the flange in an overlapping mode;
step two: fixedly mounting the auxiliary processing clamp of the open thin-wall ring piece and a plurality of blanks on a main shaft of a machine tool in a fixed manner, starting the machine tool, and cutting and processing the blanks one by one into closed ring pieces through the machine tool;
step three: taking the closed ring pieces in the step two off the auxiliary processing fixture of the open thin-wall ring pieces one by one, and cutting the closed ring pieces along the radial direction of the auxiliary processing fixture to obtain a plurality of open thin-wall ring pieces;
the processing method of the open thin-wall ring piece further comprises the following steps:
after the third step is completed, the plurality of open thin-walled ring pieces in the third step are clamped between the flange and the flange in an overlapped mode, the auxiliary machining clamp of the open thin-walled ring pieces and the plurality of open thin-walled ring pieces are subjected to heat treatment simultaneously, and then the open thin-walled ring pieces are taken down one by one from the auxiliary machining clamp of the open thin-walled ring pieces.
The process of cutting and processing the blank into the closed ring piece one by one in the step two comprises the following steps:
step 1: providing a square head slotting cutter, wherein the tail end of the square head slotting cutter is provided with a square cutter head, the edge of the square cutter head is provided with a straight cutting edge, starting a machine tool to enable the blank to rotate along with a main shaft of the machine tool, and simultaneously enabling the straight cutting edge to reciprocate for a plurality of times along the radial direction of the main shaft of the machine tool, cutting to remove partial materials on the blank and reserving proper rough machining allowance, and obtaining a longitudinal ring groove on the blank;
step 2: starting the machine tool, enabling the blank to rotate along with the main shaft of the machine tool, enabling the straight cutting edge to move into the longitudinal ring groove in the step 1 along the radial direction of the main shaft of the machine tool, and after the straight cutting edge swings for a plurality of times in a reciprocating mode along the axial direction of the main shaft of the machine tool, enabling the straight cutting edge to move out of the longitudinal ring groove along the radial direction of the main shaft of the machine tool, cutting and removing the material of the inner wall part of the longitudinal ring groove, and reserving;
and step 3: providing a T-shaped groove cutter, wherein the tail end of the T-shaped groove cutter is provided with a T-shaped cutter head, the edge of the T-shaped cutter head is provided with a composite cutting edge, starting a machine tool to enable a blank to rotate along with a main shaft of the machine tool, simultaneously enabling the composite cutting edge to move into the longitudinal ring groove in the step 1 along the main shaft of the machine tool in the radial direction, and after the composite cutting edge swings for a plurality of times in the axial direction of the main shaft of the machine tool in a reciprocating manner, then enabling the straight cutting edge to move out of the longitudinal ring groove along the main shaft of the machine tool in the radial direction, cutting to remove partial materials on the blank and finishing allowance reserved on the inner wall of the longitudinal ring groove, obtaining a transverse ring groove communicated;
and 4, step 4: and (4) repeating the steps 1 to 3 for a plurality of times, and cutting the blank one by one to form the closed ring piece.
The invention has the beneficial effects that: by adopting the technical scheme of the invention, the blank is clamped and fixed by adopting the special clamp, the integral rigidity of the blank is improved, so that required shape elements can be conveniently processed on the blank, and one pair of clamps can clamp a plurality of blanks, thereby laying a foundation for improving the yield, in addition, the clamp can be also applied to the heat treatment process, so that the open thin-wall ring can be subjected to heat treatment in a vacuum state and a restrained state, the open thin-wall ring and the auxiliary clamp synchronously deform under the restraint of the auxiliary clamp in the heat treatment process, the deformation of the open thin-wall ring along any other direction is prevented under the condition of optimizing the metallographic structure of the open thin-wall ring, the quality of a finished product is favorably improved, in addition, in the cutting process, the rough machining is carried out by adopting a square-head groove cutter, and then the T-shaped groove cutter is adopted for carrying out the finish machining and the profile modeling machining, the swing amplitude of the T-shaped groove cutter in the finish machining process is reduced, and the machining precision is guaranteed.
Drawings
FIG. 1 is a schematic structural diagram of an auxiliary machining fixture for an open thin-walled ring member according to the present invention;
FIG. 2 is a schematic structural view of the square-head slot cutter of the present invention;
fig. 3 is a schematic structural view of the T-slot knife of the present invention.
In the figure: 1-base, 2-cover plate, 11-flange, 21-flange, 3-fastener, 4-open thin-wall ring piece, 5-square-head slot knife, 51-straight blade, 6-T-shaped slot knife, 61-arc blade and 62-transverse blade (62).
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
As shown in fig. 1, 2 and 3, the present invention provides an auxiliary processing fixture for split thin-walled ring members and a processing method thereof, including a base 1 and a cover plate 2, wherein the base 1 is of a closed circular ring shape as a whole and is provided with a flange 11 on its outer circumferential surface, the cover plate 2 is of a closed circular ring shape as a whole and is provided with a flange 21 on its outer circumferential surface, when the base 1 and the cover plate 2 are connected together by a fastening member 3, the flange 21 and the flange 11 are relatively arranged facing each other, so that a plurality of split thin-walled ring members 4 can be overlapped and clamped between the flange 21 and the flange 11.
Further, the number of the fastening members 3 is plural, and the plural fastening members 3 are arranged in a circumferential array with the central axis of the base 1 or the cover plate 2 as a rotation center. The number of the fasteners 3 is more than 6. The fastener 3 is a bolt.
In addition, the axial section projection of the cover plate 2 is L-shaped, and when the base 1 and the cover plate 2 are connected together through the fastening piece 3, the flange 21 also surrounds the outer peripheral surface of the base 1. The projection of the axial section of the base 1 is L-shaped as a whole. The base 1 is made of stainless steel. The cover plate 2 is made of stainless steel.
In addition, the invention also provides a processing method of the open thin-wall ring piece, which comprises the following steps:
the method comprises the following steps: the auxiliary processing fixture of the open thin-wall ring piece is used, a plurality of blanks corresponding to the open thin-wall ring piece 4 are provided, the whole blank is in a closed circular ring shape, and the blanks are clamped between the flange 21 and the flange 11 in an overlapping mode;
step two: fixedly mounting the auxiliary processing clamp of the open thin-walled ring piece and a plurality of blanks on a main shaft of a machine tool, starting the machine tool, and cutting the blanks one by one into closed ring pieces through the machine tool;
step three: taking the closed ring pieces in the step two off the auxiliary processing fixture of the open thin-wall ring pieces one by one, and cutting off the closed ring pieces along the radial direction of the auxiliary processing fixture to obtain a plurality of open thin-wall ring pieces 4; and in the third step, the closed ring pieces are cut off along the radial direction after being taken off one by one from the auxiliary processing fixture of the open thin-wall ring pieces by adopting a linear cutting machine.
In addition, the processing method of the open thin-wall ring piece further comprises the following steps:
after the third step is completed, the plurality of open thin-walled ring members 4 in the third step are clamped between the flange 21 and the flange 11 in an overlapping manner, the auxiliary processing fixture of the open thin-walled ring members and the plurality of open thin-walled ring members 4 are subjected to heat treatment simultaneously, and then the open thin-walled ring members 4 are taken down one by one from the auxiliary processing fixture of the open thin-walled ring members. The process of simultaneously carrying out heat treatment on the auxiliary processing fixture of the open thin-walled ring piece and the plurality of open thin-walled ring pieces 4 is carried out under the vacuum condition.
In addition, the processing method of the open thin-wall ring piece further comprises the following steps:
after the open thin-walled ring member 4 is taken down one by one from the auxiliary processing fixture of the open thin-walled ring member, the width of the open end of the open thin-walled ring member 4 is detected, if the width of the open end is 50.18 mm-54.26 mm, the open end is marked as a qualified member, and the rest are unqualified members.
In addition, the process of cutting and processing the blank into the closed ring piece one by one in the step two comprises the following steps:
step 1: providing a square head slotting tool 5, arranging a square tool bit at the tail end of the square head slotting tool 5, arranging a straight cutting edge 51 at the edge of the square tool bit, starting a machine tool, enabling a blank to rotate along with a main shaft of the machine tool, enabling the straight cutting edge 51 to reciprocate for a plurality of times along the main shaft of the machine tool in the radial direction, cutting to remove partial materials on the blank, reserving proper rough machining allowance, and obtaining a longitudinal ring groove on the blank; the rough machining allowance in the step 1 is 0.5mm to 1 mm.
Step 2: starting the machine tool, enabling the blank to rotate along with the main shaft of the machine tool, simultaneously enabling the straight cutting edge 51 to move into the longitudinal ring groove in the step 1 along the radial direction of the main shaft of the machine tool, and then after the straight cutting edge 51 swings for a plurality of times in a reciprocating mode along the axial direction of the main shaft of the machine tool, enabling the straight cutting edge 51 to move out of the longitudinal ring groove along the radial direction of the main shaft of the machine tool, cutting and removing the material of the inner wall; and 2, finishing the blank sheet to a finishing allowance of 0.1 mm-0.2 mm.
And step 3: providing a T-shaped groove cutter 6, wherein the tail end of the T-shaped groove cutter 6 is provided with a T-shaped cutter head, the edge of the T-shaped cutter head is provided with a composite cutting edge, starting the machine tool, enabling the blank to rotate along with the main shaft of the machine tool, simultaneously enabling the composite cutting edge to move into the longitudinal ring groove in the step 1 along the radial direction of the main shaft of the machine tool, and then after the composite cutting edge swings for a plurality of times in a reciprocating manner along the axial direction of the main shaft of the machine tool, then enabling a straight cutting edge 51 to move out of the longitudinal ring groove along the radial direction of the main shaft of the machine tool, cutting to remove partial materials on the blank and finishing allowance reserved on the inner; the composite blade in step 3 comprises arc blades 61 arranged on the left side and the right side of the T-shaped cutter head and a cross blade 62 arranged on the edge of the tail end of the T-shaped cutter head.
And 4, step 4: and (5) repeating the steps 1 to 3 for a plurality of times, and cutting the blank one by one to form the closed ring piece.
By adopting the technical scheme of the invention, the blank is clamped and fixed by adopting the special clamp, the integral rigidity of the blank is improved, so that required shape elements can be conveniently processed on the blank, and one pair of clamps can clamp a plurality of blanks, thereby laying a foundation for improving the yield, in addition, the clamp can be also applied to the heat treatment process, so that the open thin-wall ring can be subjected to heat treatment in a vacuum state and a restrained state, the open thin-wall ring and the auxiliary clamp synchronously deform under the restraint of the auxiliary clamp in the heat treatment process, the deformation of the open thin-wall ring along any other direction is prevented under the condition of optimizing the metallographic structure of the open thin-wall ring, the quality of a finished product is favorably improved, in addition, in the cutting process, the rough machining is carried out by adopting a square-head groove cutter, and then the T-shaped groove cutter is adopted for carrying out the finish machining and the profile modeling machining, the swing amplitude of the T-shaped groove cutter in the finish machining process is reduced, and the machining precision is guaranteed.
Claims (10)
1. The utility model provides an supplementary adds clamping apparatus of opening thin wall ring spare which characterized in that: the clamping device comprises a base (1) and a cover plate (2), wherein the base (1) is in a closed circular ring shape on the whole, a flange (11) is arranged on the outer peripheral surface of the base, the cover plate (2) is in a closed circular ring shape on the whole, a flange (21) is arranged on the outer peripheral surface of the cover plate, when the base (1) and the cover plate (2) are connected together through a fastening piece (3), the flange (21) and the flange (11) are oppositely arranged, and a plurality of opening thin-wall ring pieces (4) can be clamped between the flange (21) and the flange (11) in a folding mode.
2. The auxiliary processing fixture for the open thin-walled ring member as claimed in claim 1, wherein: the number of the fasteners (3) is multiple, and the fasteners (3) are arranged in a circumferential array mode by taking the central axis of the base (1) or the cover plate (2) as a rotation center.
3. The auxiliary processing fixture for the open thin-walled ring part as claimed in claim 2, wherein: the number of the fasteners (3) is more than 6.
4. The auxiliary processing fixture for the open thin-walled ring member as claimed in claim 1, wherein: the fastening member (3) is a bolt.
5. The auxiliary processing fixture for the open thin-walled ring member as claimed in claim 1, wherein: the axial section projection of the cover plate (2) is integrally L-shaped, and when the base (1) and the cover plate (2) are connected together through the fastening piece (3), the flange (21) also surrounds the outer peripheral surface of the base (1).
6. The auxiliary processing fixture for the open thin-walled ring member as claimed in claim 1, wherein: the projection of the axial section of the base (1) is L-shaped as a whole.
7. The auxiliary processing fixture for the open thin-walled ring member as claimed in claim 1, wherein: the base (1) is made of stainless steel.
8. A processing method of an open thin-wall ring piece is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: using the auxiliary processing fixture of the open thin-walled ring member according to any one of claims 1 to 7, and providing a plurality of blanks corresponding to the open thin-walled ring member (4), wherein the blanks are integrally in a closed circular ring shape, and the blanks are clamped between the flange (21) and the flange (11) in an overlapped manner;
step two: fixedly mounting the auxiliary processing clamp of the open thin-wall ring piece and a plurality of blanks on a main shaft of a machine tool in a fixed manner, starting the machine tool, and cutting and processing the blanks one by one into closed ring pieces through the machine tool;
step three: and taking off the closed ring pieces from the auxiliary processing fixture of the open thin-wall ring pieces one by one in the step two, and cutting off the closed ring pieces along the radial direction of the open thin-wall ring pieces to obtain a plurality of open thin-wall ring pieces (4).
9. The method for manufacturing an open thin-walled ring according to claim 8, wherein: the processing method of the open thin-wall ring piece further comprises the following steps:
after the third step is finished, the plurality of open thin-wall ring pieces (4) in the third step are clamped between the flange (21) and the flange (11) in an overlapped mode, after the auxiliary machining fixture of the open thin-wall ring pieces and the plurality of open thin-wall ring pieces (4) are subjected to heat treatment simultaneously, the open thin-wall ring pieces (4) are taken down one by one from the auxiliary machining fixture of the open thin-wall ring pieces.
10. The method for manufacturing an open thin-walled ring according to claim 8, wherein: the process of cutting and processing the blank into the closed ring piece one by one in the step two comprises the following steps:
step 1: providing a square head groove cutter (5), wherein the tail end of the square head groove cutter (5) is provided with a square cutter head, the edge of the square cutter head is provided with a straight cutting edge (51), a machine tool is started, the blank rotates along with a main shaft of the machine tool, the straight cutting edge (51) moves in a reciprocating mode for a plurality of times along the main shaft of the machine tool in the radial direction, partial materials on the blank are removed through cutting, proper rough machining allowance is reserved, and a longitudinal ring groove is obtained on the blank;
step 2: starting the machine tool, enabling the blank to rotate along with the main shaft of the machine tool, simultaneously enabling the straight cutting edge (51) to move into the longitudinal ring groove in the step 1 along the radial direction of the main shaft of the machine tool, then enabling the straight cutting edge (51) to move out of the longitudinal ring groove along the radial direction of the main shaft of the machine tool after reciprocating and swinging for a plurality of times along the axial direction of the main shaft of the machine tool, cutting and removing the material of the inner wall part of the longitudinal ring groove, and reserving proper finishing allowance;
and step 3: providing a T-shaped groove cutter (6), wherein the tail end of the T-shaped groove cutter (6) is provided with a T-shaped cutter head, the edge of the T-shaped cutter head is provided with a composite cutting edge, a machine tool is started, the blank rotates along with a main shaft of the machine tool, meanwhile, the composite cutting edge is firstly moved into the longitudinal ring groove in the step 1 along the radial direction of the main shaft of the machine tool and then axially and reciprocally swings for a plurality of times along the main shaft of the machine tool, then the straight cutting edge (51) is radially moved out of the longitudinal ring groove along the main shaft of the machine tool, the upper part of the blank and the reserved finish machining allowance on the inner wall of the longitudinal ring groove are cut and removed, a transverse ring groove communicated with the longitudinal ring groove is obtained on the blank, and;
and 4, step 4: and (4) repeating the steps 1 to 3 for a plurality of times, and cutting the blank one by one to form the closed ring piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011294445.7A CN112338603A (en) | 2020-11-18 | 2020-11-18 | Auxiliary machining clamp and machining method for open thin-wall ring piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011294445.7A CN112338603A (en) | 2020-11-18 | 2020-11-18 | Auxiliary machining clamp and machining method for open thin-wall ring piece |
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| Publication Number | Publication Date |
|---|---|
| CN112338603A true CN112338603A (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011294445.7A Pending CN112338603A (en) | 2020-11-18 | 2020-11-18 | Auxiliary machining clamp and machining method for open thin-wall ring piece |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319653A (en) * | 2021-04-25 | 2021-08-31 | 航天材料及工艺研究所 | Machining method for large-size thin-wall ceramic matrix composite wing component |
-
2020
- 2020-11-18 CN CN202011294445.7A patent/CN112338603A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113319653A (en) * | 2021-04-25 | 2021-08-31 | 航天材料及工艺研究所 | Machining method for large-size thin-wall ceramic matrix composite wing component |
| CN113319653B (en) * | 2021-04-25 | 2022-03-04 | 航天材料及工艺研究所 | Machining method for large-size thin-wall ceramic matrix composite wing component |
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