CN111482754A - Self-reference positioning and clamping device for sheet punching and welding piece - Google Patents

Self-reference positioning and clamping device for sheet punching and welding piece Download PDF

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Publication number
CN111482754A
CN111482754A CN202010416507.0A CN202010416507A CN111482754A CN 111482754 A CN111482754 A CN 111482754A CN 202010416507 A CN202010416507 A CN 202010416507A CN 111482754 A CN111482754 A CN 111482754A
Authority
CN
China
Prior art keywords
supporting
positioning
positioning block
clamp
clamping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010416507.0A
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Chinese (zh)
Inventor
魏伟
马玉梅
苏鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Wangjiang Industry Co Ltd
Original Assignee
Chongqing Wangjiang Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Wangjiang Industry Co Ltd filed Critical Chongqing Wangjiang Industry Co Ltd
Priority to CN202010416507.0A priority Critical patent/CN111482754A/en
Publication of CN111482754A publication Critical patent/CN111482754A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426—Fixtures for other work
    • B23K37/0435—Clamps
    • B23K37/0443—Jigs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups

Abstract

The invention discloses a positioning and clamping device taking a sheet punching and welding piece as a reference, which comprises: the anchor clamps body, support locating piece and bow-shaped clamp. The left and right sides of the clamp body are provided with support bars, the middle section of each support bar on the left side is a abdicating notch, and the top of each support bar is a support positioning reference plane. The supporting and positioning blocks are bridged between the left and right supporting bars. The bow-shaped clamp clamps the top and the bottom of the supporting and positioning block and attaches the surface of the part to the bottom clamping and positioning surface of the supporting and positioning block. The two supporting and positioning blocks on the outer side are clamped firstly, the part of the machined part which is not shielded by the supporting and positioning blocks is taken down, the two supporting and positioning blocks on the inner side are clamped secondly, and the part of the machined part which is not shielded by the two supporting and positioning blocks on the inner side is not shielded.

Description

Self-reference positioning and clamping device for sheet punching and welding piece
Technical Field
The invention relates to mechanical measurement, in particular to a positioning and clamping device taking a sheet punching and welding piece as a reference.
Background
Referring to fig. 1, in some machines, there is a thin plate stamped and welded structure part 6, the flatness of the surface a of which is required to be high, and which requires machining (e.g., milling, etc.). However, the part is a special-shaped structural part formed by welding a thin plate after punch forming, and no good surface of the part surface can be used as a processing reference surface of the processing surface A; the universal cushion block, the screw and the like are adopted for clamping, and the phenomenon that a workpiece is interfered by a clamp is easy to occur in the clamping process due to the uneven surface of the part, so that the clamping is inconvenient and the clamping and positioning are inaccurate; the main body of the part is a thin plate, even if the part is welded into a structural part, the rigidity of the part is poor, the part is extremely easy to deform excessively due to cutting stress in the machining process, and dimensional elements such as flatness and the like are difficult to machine and qualified. In order to effectively solve the above problems, it is necessary to find a machining method suitable for the part. Therefore, it is necessary to select the a surface to be machined as the machining reference surface, and to design a device which can improve the rigidity of the part and can position and clamp the part quickly and accurately.
Disclosure of Invention
The positioning and clamping device with the thin plate punching and welding piece as the reference can quickly and accurately position and clamp the thin plate punching and welding structural part, so that the part can be positioned, clamped and machined by taking the part as the reference, and the machining efficiency is improved.
The invention discloses a positioning and clamping device taking a sheet stamping and welding piece as a reference, which comprises a clamp body, a supporting and positioning block and an arch clamp;
the fixture body is provided with support bars on the left and right, the middle section of the support bar on the left side is an abdicating notch, and the top of the support bar is a support positioning reference plane;
the supporting positioning blocks are bridged between the left and right supporting bars;
the bow-shaped clamp clamps the top and the bottom of the supporting and positioning block and attaches the surface of the part to the bottom clamping and positioning surface of the supporting and positioning block.
Furthermore, a screw hole is formed in the arched clamp, and a screw penetrates through the screw hole to clamp and connect the supporting and positioning block and the part.
Furthermore, a T-shaped groove is formed in the top of the supporting bar of the fixture body, and a nut is placed in the T-shaped groove; two fixing holes are formed in the supporting and positioning block; the screw penetrates through the fixing hole and is screwed into the nut to fix the supporting and positioning block between the supporting bars;
furthermore, the center distance of the T-shaped grooves at the left end and the right end for connecting with the supporting and positioning blocks is the same as the hole distance of the two fixing holes on the supporting and positioning blocks.
Furthermore, the bottom of the supporting and positioning block is provided with a abdicating notch which is adapted to the convex part of the corresponding part on the part.
Further, the distance of the opening in the middle of the arch clamp is greater than the sum of the thickness of the supporting and positioning block and the thickness of the part.
Furthermore, the supporting strips are higher than the parts, and the inner distance between the two supporting strips is greater than the overall length of the parts.
Further, the supporting and positioning reference plane of the fixture body and the bottom clamping and positioning surface of the supporting and positioning block are machined in a grinding mode.
The method for positioning and clamping the thin plate punching and welding piece by taking the thin plate punching and welding piece as the reference comprises the following steps,
firstly, clamping and aligning a clamp body on processing equipment;
step two, arranging a abdicating notch at the bottom of the supporting and positioning block for coarse positioning, detecting the gap between the surface of the part and the bottom clamping and positioning surface of the supporting and positioning block by using a feeler gauge, ensuring effective contact of the two planes and reliable positioning, and enabling a screw to pass through a screw hole to realize clamping connection of the supporting and positioning block and the part;
thirdly, pressing the part which is connected with the two outer supporting and positioning blocks onto the fixture body through the T-shaped groove by using nuts and screws; the clearance between the supporting and positioning reference plane of the fixture body and the bottom clamping and positioning surface of the supporting and positioning block is detected by using the feeler gauge, so that the two planes are ensured to be in effective contact and reliable positioning; using processing equipment to process the part of the surface of the part which is not shielded by the supporting positioning block;
step five, press-fitting the two inner supporting positioning blocks onto the fixture body by using nuts and screws for the T-shaped grooves, then disassembling the arch-shaped clamp from the two outer supporting positioning blocks one by one onto the two inner supporting positioning blocks to clamp the surfaces of the parts processed in the step three, and disassembling the two outer supporting positioning blocks;
and step six, machining the unprocessed part of the surface of the part by using machining equipment.
The beneficial technical effects of the invention are as follows:
1) only the supporting and positioning block and the fixture body are used for positioning and clamping the parts, the structure is simple, the device is easy to manufacture, and the cost is low.
2) The mode of once inboard supporting location, once outside supporting location is adopted, and the part that makes can press from both sides tight processing for the benchmark location certainly, has practiced thrift benchmark timing, contrast frock structure, promotes machining efficiency.
Drawings
FIG. 1 is a schematic structural view of part 6; a
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic structural view of the chuck body 1;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic structural view of the supporting and positioning block 2;
FIG. 6 is a top view of FIG. 5;
fig. 7 is a schematic structural view of the bow clamp 5;
FIG. 8 is a view A-A of FIG. 7;
fig. 9 is a schematic working view of the part 6 being clamped on the positioning and clamping device;
FIG. 10 is a top view of FIG. 9;
the part-6, the surface-A, the external shape length-L6, the height-L7, the clamp body-1, a supporting and positioning reference plane-B, an abdicating notch-X, the center distance-L, the stay height-L1, the inner side distance-L2, a supporting and positioning block-2, a screw-3, a nut-4, a bottom clamping and positioning surface-C, an abdicating notch-P, a hole distance-L3, the thickness-L4, a fixing hole-D1, an arched clamp-5, a screw hole-D2 and an opening distance-L5.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 10, the self-reference positioning and clamping device for sheet metal stamping and welding parts disclosed by the invention comprises: the clamp comprises a clamp body 1, a support positioning block 2 and a bow clamp 5;
the left and right sides of the fixture body 1 are provided with support bars, the middle section of the left support bar is provided with a abdication gap X, and the top of each support bar is provided with a support positioning reference plane B; the supporting and positioning blocks 2 are bridged between the left and right supporting bars; the bow-shaped clamp 5 clamps the top and the bottom of the supporting and positioning block 2 and attaches the surface A of the part 6 to the bottom clamping and positioning surface C of the supporting and positioning block 2. The supporting and positioning reference plane B is mainly used for clamping and positioning with the bottom clamping and positioning surface C of the supporting and positioning block 2 as a supporting and positioning reference plane, has small flatness error and surface precision, and is subjected to finish machining in a grinding mode.
The bow clamp 5 is provided with a screw hole D2, and the screw 3 passes through the screw hole D2 to realize the clamping connection of the support positioning block 2 and the part 6. The specification of the screw hole D2 is matched with that of the screw 3.
The top of the supporting strip of the fixture body 1 is provided with a T-shaped groove, and a nut 4 is placed in the T-shaped groove; two fixing holes D1 are arranged on the supporting and positioning block 2; the screw 3 passes through the fixing hole D1 and is screwed into the nut 4 to fix the support positioning block 2 between the support bars;
the center distance L of the T-shaped grooves at the left end and the right end for connecting with the supporting and positioning block 2 is the same as the hole distance L3 of the two fixing holes D1 on the supporting and positioning block 2.
The bottom of the supporting and positioning block 2 is provided with a abdicating notch P which is adapted to the convex part of the corresponding part on the part 6.
The distance L5 between the middle opening of the bow-shaped clamp 5 is slightly larger than the sum of the thickness L4 of the supporting and positioning block 2 and the thickness of the part 6, so that the bow-shaped clamp 5 can be smoothly assembled and disassembled when the supporting and positioning block 2 is connected with the part 6.
The brace height L1 is greater than the height L7 of the part 6, and the inside distance L2 between the two braces is greater than the overall length L6 of the part 6.
The method for positioning the clamping device by taking the thin plate welding part as the reference comprises the following steps:
firstly, clamping and aligning a clamp body 1 on processing equipment;
step two, a abdicating notch P is arranged at the bottom of the supporting and positioning block 2 for coarse positioning, a clearance between the surface A of the part 6 and a bottom clamping and positioning surface C of the supporting and positioning block 2 is detected by using a feeler gauge, effective contact and reliable positioning of the two planes are ensured, and the screw 3 passes through the screw hole D2 to realize clamping connection of the supporting and positioning block 2 and the part 6;
thirdly, a part 6 which is connected with the two outer supporting and positioning blocks 2 is pressed on the fixture body 1 through a nut 4 and a screw 3 for the T-shaped groove; a clearance between a supporting and positioning reference plane B of the fixture body 1 and a bottom clamping and positioning plane C of the supporting and positioning block 2 is detected by using a feeler gauge, so that the two planes are ensured to be in effective contact and reliable positioning; using processing equipment to process the part of the surface A of the part 6 which is not shielded by the supporting and positioning block 2;
step five, press-fitting the two inner supporting and positioning blocks 2 on the clamp body 1 by using nuts 4 and screws 3 for the T-shaped grooves, then assembling and disassembling the arch-shaped clamp 5 on the two inner supporting and positioning blocks 2 one by one from the two outer supporting and positioning blocks 2 to clamp the surface A of the part 6 which is processed in the step three, and disassembling the two outer supporting and positioning blocks 2;
and step six, machining the unprocessed part of the surface A of the part 6 by using machining equipment.

Claims (9)

1. Sheet metal dashes weldment from positioning clamping device who is the benchmark, its characterized in that: comprises a clamp body (1), a supporting and positioning block (2) and a bow clamp (5);
the clamp body (1) is provided with support bars on the left and right, the middle section of the support bar on the left side is an abdication notch (X), and the top of each support bar is a support positioning reference plane (B);
the supporting positioning blocks (2) are bridged between the left and right supporting bars;
the bow-shaped clamp (5) clamps the top and the bottom of the supporting and positioning block (2) and attaches the surface (A) of the part (6) to the bottom clamping and positioning surface (C) of the supporting and positioning block (2).
2. The sheet metal flash weldment self-referencing indexing clamping assembly of claim 1 wherein: the bow clamp (5) is provided with a screw hole (D2), and the screw (3) penetrates through the screw hole (D2) to realize clamping connection of the supporting positioning block (2) and the part (6).
3. The sheet metal flash weldment self-referencing indexing clamping assembly of claim 2 wherein: the top of the supporting strip of the fixture body (1) is provided with a T-shaped groove, and a nut (4) is placed in the T-shaped groove; two fixing holes (D1) are arranged on the supporting and positioning block (2); the screw (3) passes through the fixing hole (D1) and is screwed into the nut (4) to fix the support positioning block (2) between the support bars.
4. The self-reference positioning and clamping device for the sheet metal stamping and welding piece is characterized in that the center distance (L) of the T-shaped grooves at the left end and the right end for connecting with the supporting and positioning block (2) is the same as the hole distance (L3) of the two fixing holes (D1) on the supporting and positioning block (2).
5. The sheet metal flash weldment self-referencing indexing clamping assembly of claim 4 wherein: the bottom of the supporting and positioning block (2) is provided with a abdicating notch (P), and the abdicating notch (P) is adapted to the convex part of the corresponding part on the part (6).
6. The self-reference positioning and clamping device for the sheet metal blanking welder as recited in claim 5, characterized in that the opening distance (L5) in the middle of the bow clamp (5) is larger than the sum of the thickness (L4) of the supporting and positioning block (2) and the thickness of the part (6).
7. The self-reference positioning and clamping device for the thin plate blanking weldments is characterized in that the supporting strips have supporting strip height (L1) which is larger than the height (L7) of the part (6), and the inner side distance (L2) between the two supporting strips is larger than the overall length (L6) of the part (6).
8. The sheet metal flash weldment self-referencing indexing clamping assembly of claim 7 wherein: and a supporting and positioning reference plane (B) of the fixture body (1) and a bottom clamping and positioning surface (C) of the supporting and positioning block (2) are machined in a grinding mode.
9. A method of using the self-referencing sheet metal piercing and welding fixture of any one of claims 1 through 8, wherein: comprises the following steps of (a) carrying out,
firstly, clamping and aligning a clamp body (1) on processing equipment;
step two, arranging a abdicating notch P at the bottom of the supporting and positioning block (2) for coarse positioning, detecting a gap between the surface (A) of the part (6) and a bottom clamping and positioning surface (C) of the supporting and positioning block (2) by using a feeler gauge, ensuring effective contact and reliable positioning of the two planes, and enabling a screw (3) to penetrate through a screw hole (D2) to realize clamping connection of the supporting and positioning block (2) and the part (6);
thirdly, pressing a part (6) which is connected with the two outer supporting and positioning blocks (2) onto the clamp body (1) through a nut (4) and a screw (3) for the T-shaped groove; a clearance between a supporting and positioning reference plane (B) of the clamp body (1) and a bottom clamping and positioning surface (C) of the supporting and positioning block (2) is detected by using a feeler gauge, so that the two planes are ensured to be in effective contact and reliable positioning; using processing equipment to process the part, which is not covered by the supporting and positioning block (2), of the surface (A) of the part (6);
step five, press-fitting the two inner supporting positioning blocks (2) on the clamp body (1) by using nuts (4) and screws (3) for the T-shaped grooves, then assembling and disassembling the arch-shaped clamp (5) on the two inner supporting positioning blocks (2) one by one from the two outer supporting positioning blocks (2) to clamp the surface (A) of the part (6) which is processed in the step three, and disassembling the two outer supporting positioning blocks (2);
and step six, machining the unprocessed part of the surface (A) of the part (6) by using machining equipment.
CN202010416507.0A 2020-05-18 2020-05-18 Self-reference positioning and clamping device for sheet punching and welding piece Pending CN111482754A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010416507.0A CN111482754A (en) 2020-05-18 2020-05-18 Self-reference positioning and clamping device for sheet punching and welding piece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010416507.0A CN111482754A (en) 2020-05-18 2020-05-18 Self-reference positioning and clamping device for sheet punching and welding piece

Publications (1)

Publication Number Publication Date
CN111482754A true CN111482754A (en) 2020-08-04

Family

ID=71790833

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010416507.0A Pending CN111482754A (en) 2020-05-18 2020-05-18 Self-reference positioning and clamping device for sheet punching and welding piece

Country Status (1)

Country Link
CN (1) CN111482754A (en)

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