CN109249171B - Brake shoe welding jig - Google Patents
Brake shoe welding jig Download PDFInfo
- Publication number
- CN109249171B CN109249171B CN201811372684.2A CN201811372684A CN109249171B CN 109249171 B CN109249171 B CN 109249171B CN 201811372684 A CN201811372684 A CN 201811372684A CN 109249171 B CN109249171 B CN 109249171B
- Authority
- CN
- China
- Prior art keywords
- positioning
- clamping
- positioning base
- brake shoe
- matching parts
- 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.)
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Links
- 238000003466 welding Methods 0.000 title claims abstract description 25
- 238000003825 pressing Methods 0.000 claims abstract description 13
- 238000005452 bending Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 abstract description 8
- 238000003754 machining Methods 0.000 abstract description 6
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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 for a procedure covered by only one of the other main groups of this subclass
- B23K37/04—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The brake shoe welding fixture comprises a fixed seat; positioning a base; the two clamping seats and the side surfaces of the positioning base form a clamping mechanism for clamping the brake shoe web plate, the clamping seats are provided with positioning units, and the positioning units comprise two positioning base surfaces; the two adjusting blocks comprise positioning connecting parts, first matching parts and second matching parts, wherein the first matching parts are attached to one of the positioning base surfaces, the second matching parts are attached to the other positioning base surface, the first matching parts and the second matching parts are fixedly connected to the clamping seat through bolts, at least one adjusting gasket is arranged between each of the first matching parts, the second matching parts and the corresponding positioning base surface, and a positioning pin is arranged on each positioning connecting part; and (5) pressing the base. The invention can change the position of the locating pin, so that the locating pin can be accurately inserted into a process hole formed in the brake shoe web plate, and the accurate positioning of the brake shoe web plate is realized, thereby eliminating the influence of inaccurate clamping caused by workpiece machining errors.
Description
Technical Field
The invention relates to a clamp, in particular to a brake shoe welding clamp.
Background
The brake shoe typically includes a bent plate and two webs that are welded to the inside of the bent plate after being machined into an arc conforming to the bent shape of the bent plate. When welding is carried out, the web plate and the bent plate are required to be respectively fixed by using a clamp, so that the web plate and the bent plate can be welded after being butted according to the designed size; however, when the bending plate and the web are machined, tolerances are usually present, and particularly for the bending plate formed by bending, the errors are difficult to accurately control, the size of the existing clamp is fixed, the clamping position of the workpiece is difficult to adjust according to the machining errors of the workpiece, after welding, the errors exist in the welded brake shoes correspondingly due to the machining errors of the bending plate and the web, and in some cases, the errors are amplified, so that the accuracy of the brake shoes is affected, and even the brake shoes are difficult to adapt to the installation of the brake assembly.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a brake shoe welding fixture which can adjust the clamping position of a workpiece according to the machining error of the workpiece and improve the welding precision of the brake shoe.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the brake shoe welding fixture comprises a brake shoe welding head,
a fixing seat;
the positioning base is fixedly connected to the fixed seat, the top of the positioning base is provided with a supporting surface, and the supporting surface is arc-shaped and matched with the brake shoe bending plate;
the clamping bases are respectively positioned at two sides of the positioning base, the clamping bases can move between a position close to the positioning base and a position far away from the positioning base, when the clamping bases are positioned at the position close to the positioning base, the clamping bases and the side surfaces of the positioning base jointly form a clamping mechanism for clamping the brake shoe web, each clamping base is provided with at least one positioning unit, each positioning unit comprises two positioning base surfaces which are perpendicular to the side surfaces of the positioning base, and the two positioning base surfaces are perpendicular to each other;
the adjusting blocks comprise positioning connecting parts, first matching parts and second matching parts, wherein the first matching parts are attached to one of the positioning base surfaces, the second matching parts are attached to the other positioning base surface, the first matching parts and the second matching parts are fixedly connected to the clamping seats through bolts, at least one adjusting gasket is arranged between each of the first matching parts, the second matching parts and the corresponding positioning base surface, and the positioning connecting parts are provided with positioning pins which penetrate into holes of the webs of the brake shoes;
the pressing seat is positioned above the supporting surface and can be movably arranged on the fixing seat up and down.
A plurality of adjusting gaskets are arranged between the first matching part, the second matching part and the corresponding positioning base surface, and the adjusting gaskets are arranged in a stacked mode.
The positioning unit is a positioning groove which is positioned on the outer side surface of the clamping seat and is formed by recessing the edge of the clamping seat towards the middle part of the clamping seat, and the two positioning base surfaces are two side walls of the positioning groove.
Two positioning grooves are arranged on each clamping seat.
The welding fixture further comprises two first driving units which are respectively positioned at the outer sides of the two clamping seats and are respectively used for driving the two clamping seats to move between a position close to the positioning base and a position far away from the positioning base.
The welding fixture further comprises a second driving unit, wherein the second driving unit is used for driving the pressing seat to move up and down relative to the fixing seat.
The welding fixture further comprises a plurality of guide rods, the guide rods are fixedly connected to the positioning base, and the clamping seat is sleeved on the guide rods in a sliding mode.
The invention has the beneficial effects that:
compared with the prior art, the invention can select the first adjusting gasket and the second adjusting gasket with different thicknesses or increase and decrease the vertical beams of the first adjusting gasket and the second adjusting gasket according to actual conditions to change the position of the locating pin, so that the locating pin can be accurately inserted into a process hole formed in the brake shoe web plate, the accurate positioning of the brake shoe web plate is realized, the influence of inaccurate clamping caused by workpiece machining errors is eliminated, and the welding precision of the brake shoe is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is an enlarged view at a in fig. 1.
Detailed Description
The invention is further described below with reference to the drawings and detailed description:
as shown in fig. 1 and 2, the brake shoe welding fixture according to the present invention is used for positioning and clamping a brake shoe bending plate 91 and two brake shoe webs 92 so as to weld the brake shoe bending plate 91 and the brake shoe webs 92, specifically, the brake shoe welding fixture includes a fixing base 10, a positioning base 20, two clamping bases 30 and a pressing base 40, wherein the fixing base 10 is a mounting base portion of the whole welding fixture, may be a generally C-shaped structure, the positioning base 20 is fixedly connected to the fixing base 10, specifically, may be fixed above the bottom of the C-shape of the fixing base 10, the top of the positioning base 20 is a supporting surface, the supporting surface is arc-shaped, and when the brake shoe bending plate 91 is placed on the positioning base 20, the brake shoe bending plate 91 is matched with the supporting surface, and naturally, in order to limit the lateral displacement of the brake shoe bending plate 91, a limiting pin may also be disposed on the positioning base 20, and the limiting pin may be embedded in a process hole formed on the brake shoe bending plate 91 so as to prevent the brake shoe bending plate 91 from moving relatively to the supporting surface. The two clamping holders 30 are respectively arranged at two sides of the positioning base 20, the two clamping holders 30 are respectively matched with two side surfaces of the positioning base 20 to clamp and position the two brake shoe webs 92, the clamping holders 30 can move between a position close to the positioning base 20 and a position far away from the positioning base 20, when the clamping holders 30 are positioned at the position close to the positioning base 20, a clamping mechanism is formed between the clamping holders 30 and the side surfaces of the positioning base 20 to clamp and position the brake shoe webs 92, and when the clamping holders 30 are positioned at the position far away from the positioning base 20, a certain distance exists between the clamping holders 30 and the side surfaces of the positioning base 20, and the brake shoe webs 92 can be arranged between the clamping holders 30 and the positioning base 20. A positioning unit is disposed on each holder 30, the positioning unit may be disposed on an outer surface of the holder 30, in particular, the positioning unit may be a positioning groove 31 formed on the outer surface of the holder 30, the positioning groove 31 is formed by recessing an edge of the holder 30 toward a middle of the holder 30, and a positioning base 311 and a positioning base 312 are formed in the positioning groove 31, which are perpendicular to a side surface of the positioning base 20, and the positioning base 311 and the positioning base 312 are disposed perpendicular to each other; an adjusting block 50 is further mounted on the clamping seat 30, the adjusting block 50 specifically comprises a positioning connecting portion 53, a first matching portion 51 and a second matching portion 52, which can be in an integrally formed structure, the first matching portion 51 is attached to the positioning base surface 311, a first adjusting gasket 55 is arranged between the first matching portion 51 and the positioning base surface 311, and the first matching portion 51 is screwed on the clamping seat 30 through a bolt 57; the second matching part 52 is attached to the positioning base surface 312, and a second adjusting spacer 56 is arranged between the second matching part 52 and the positioning base surface, and the second matching part 52 is screwed on the clamping seat 30 through a bolt 57; the first adjusting pad 55 and the second adjusting pad 56 are set to have specific thicknesses, which are used for adjusting the relative positions of the adjusting block 50 and the clamping seat 30, specifically, when the first adjusting pad 55 is removed or the first adjusting pad 55 with different thickness is replaced, the relative position of the adjusting block 50 along the direction a in the drawing is changed, and when the second adjusting pad 56 is removed or the second adjusting pad 56 with different thickness is replaced, the relative position of the adjusting block 50 along the direction b in the drawing is changed, and the clamping seat 30 is changed; a positioning pin 54 is disposed on the positioning connection portion 53, the positioning pin 54 is used to penetrate into a process hole formed in the brake shoe web 92 to position the brake shoe web 92, and the position of the adjusting block 50 can be changed according to the above adjustment method, so as to ensure that the positioning pin 54 can be accurately inserted into the process hole formed in the brake shoe web 92. The pressing seat 40 is located above the supporting surface, and is movably installed on the C-shaped upper portion of the fixing seat 10, specifically, guide rods 42 may be fixed on two sides of the pressing seat 40, and the guide rods 42 slidably pass through guide sleeves fixed on the fixing seat 10. The lower surface of the pressing seat 40 may be arc-shaped to be provided to match the shape of the brake shoe bending plate 91, and it clamps the brake shoe bending plate 91 together with the positioning base 20 after the pressing seat 40 is pressed down.
In the present invention, the first and second adjustment shims 55 and 56 may be provided in plural, that is, a plurality of first adjustment shims 55 are stacked between the first fitting portion 51 and the positioning base surface 311, and a plurality of second adjustment shims 56 are stacked between the second fitting portion 52 and the positioning base surface 312. Thus, by selecting one or more of the first adjusting shims 55 and the second adjusting shims 56, the position of the adjusting block 50 can be precisely adjusted, and then the position of the positioning pin 54 can be adjusted, so that the positioning pin 54 can be precisely inserted into the process hole on the brake shoe web 92.
In the above-mentioned scheme, the positioning groove 31 is formed on the outer surface of the holder 30 to form the positioning base 311 and the positioning base 312, and in fact, the positioning unit of the present invention may also be a L-shaped baffle protruding from the outer surface of the holder 30, so that two portions of the baffle are respectively matched with the positioning base 311 and the positioning base 312. In the present invention, two positioning grooves 31 may be disposed on each clamping seat 30, and one adjusting block 50 is disposed in each positioning groove 31, however, two baffles may be disposed on the clamping seat 30 and two adjusting blocks 50 may be adapted.
The welding fixture of the invention further comprises two first driving units, wherein the first driving units can be specifically first air cylinders 32, the two first air cylinders 32 are respectively positioned at the outer sides of the two clamping seats 30 and respectively used for driving the two clamping seats 30 to move, specifically, the telescopic rods of the first air cylinders 32 are fixed on the positioning base 20, and the cylinder bodies of the first air cylinders are fixedly connected with the clamping seats 30, so that the first air cylinders 32 drive the clamping seats 30 to move between the positions close to the positioning base 20 and the positions far away from the positioning base 20; of course, the cylinder body of the first cylinder 32 may be fixed on the fixing base 10, and the telescopic rod thereof may be fixedly connected with the clamping base 30.
The up-and-down movement of the pressing seat 40 is driven by a second driving unit, which may be a second cylinder 41, the cylinder body of which is fixed on the fixing seat 10, the telescopic rod passes through the fixing seat 10 to be connected to the pressing seat 40, and after the brake shoe bending plate 91 is placed on the supporting surface, the second cylinder 41 is started to move the pressing seat 40 downwards to a position for pressing the brake shoe bending plate 91.
In order to further improve the clamping precision, the welding fixture further comprises a plurality of guide rods 21, wherein the guide rods 21 are fixed on the positioning base 20, two ends of the guide rods are respectively protruded out of two sides of the positioning base 20, and the clamping seat 30 is slidably sleeved on the guide rods 21.
When the brake shoe welding fixture is used, the first adjusting gaskets 55 and the second adjusting gaskets 56 with different thicknesses or the vertical beams of the first adjusting gaskets 55 and the second adjusting gaskets 56 are increased or decreased according to actual conditions, so that the positions of the positioning pins 54 are changed, the positioning pins 54 can be accurately inserted into the process holes formed in the brake shoe web 92, the accurate positioning of the brake shoe web is realized, the influence of inaccurate clamping caused by workpiece machining errors is eliminated, and the welding precision of the brake shoe is improved.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that modifications may be made to the technical solutions described in the foregoing embodiments or equivalents may be substituted for some of the technical features thereof, and these modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention in essence.
Claims (4)
1. The brake shoe welding fixture is characterized by comprising,
a fixing seat;
the positioning base is fixedly connected to the fixed seat, the top of the positioning base is provided with a supporting surface, and the supporting surface is arc-shaped and matched with the brake shoe bending plate;
the clamping bases are respectively positioned at two sides of the positioning base, the clamping bases can move between a position close to the positioning base and a position far away from the positioning base, when the clamping bases are positioned at the position close to the positioning base, the clamping bases and the side surfaces of the positioning base jointly form a clamping mechanism for clamping the brake shoe web, each clamping base is provided with at least one positioning unit, each positioning unit comprises two positioning base surfaces which are perpendicular to the side surfaces of the positioning base, and the two positioning base surfaces are perpendicular to each other;
the adjusting blocks comprise positioning connecting parts, first matching parts and second matching parts, wherein the first matching parts are attached to one of the positioning base surfaces, the second matching parts are attached to the other positioning base surface, the first matching parts and the second matching parts are fixedly connected to the clamping seats through bolts, at least one adjusting gasket is arranged between each of the first matching parts, the second matching parts and the corresponding positioning base surface, and the positioning connecting parts are provided with positioning pins which penetrate into holes of the webs of the brake shoes;
the pressing seat is positioned above the supporting surface and can be movably arranged on the fixing seat up and down;
a plurality of adjusting gaskets are arranged between the first matching part, the second matching part and the corresponding positioning base surface, and the adjusting gaskets are stacked;
the positioning unit is a positioning groove which is positioned on the outer side surface of the clamping seat and is formed by recessing the edge of the clamping seat towards the middle part of the clamping seat, and the two positioning base surfaces are two side walls of the positioning groove;
two positioning grooves are arranged on each clamping seat.
2. The brake shoe welding jig of claim 1, further comprising two first drive units located outside of the two clamping holders and configured to move the two clamping holders between a position proximate to the positioning base and a position distal from the positioning base, respectively.
3. The brake shoe welding jig of claim 1, further comprising a second drive unit for driving the press seat up and down relative to the fixed seat.
4. The brake shoe welding jig of claim 1, further comprising a plurality of guide bars fixedly attached to the positioning base, the clamping holders slidably sleeved on the guide bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811372684.2A CN109249171B (en) | 2018-11-19 | 2018-11-19 | Brake shoe welding jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811372684.2A CN109249171B (en) | 2018-11-19 | 2018-11-19 | Brake shoe welding jig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109249171A CN109249171A (en) | 2019-01-22 |
| CN109249171B true CN109249171B (en) | 2023-09-15 |
Family
ID=65043505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811372684.2A Active CN109249171B (en) | 2018-11-19 | 2018-11-19 | Brake shoe welding jig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109249171B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112077505B (en) * | 2020-08-03 | 2022-12-13 | 浙江德清精艺汽配有限公司 | Automatic welding device for brake shoe |
| CN113118687B (en) * | 2021-03-22 | 2022-09-02 | 广州瑞松智能科技股份有限公司 | Robot welding device for brake shoe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1177067A (en) * | 1996-09-16 | 1998-03-25 | 尹顿公司 | Brake shoe assembly and method of forming |
| CN102086914A (en) * | 2009-12-04 | 2011-06-08 | 中国第一汽车集团公司 | Stamped and welded block variable-section friction plate brake |
| CN107378348A (en) * | 2017-08-30 | 2017-11-24 | 山东力得制动科技有限公司 | A kind of truck drum brake punching-welding shoe iron welds special fixture |
| CN206702651U (en) * | 2017-03-09 | 2017-12-05 | 襄阳市瑞富达机械有限公司 | A kind of brake shoe iron boring jig |
| CN207710197U (en) * | 2017-12-25 | 2018-08-10 | 山东力得制动科技有限公司 | A kind of welding brake punching-welding shoe iron inclination web swinging built-up jig |
-
2018
- 2018-11-19 CN CN201811372684.2A patent/CN109249171B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1177067A (en) * | 1996-09-16 | 1998-03-25 | 尹顿公司 | Brake shoe assembly and method of forming |
| CN102086914A (en) * | 2009-12-04 | 2011-06-08 | 中国第一汽车集团公司 | Stamped and welded block variable-section friction plate brake |
| CN206702651U (en) * | 2017-03-09 | 2017-12-05 | 襄阳市瑞富达机械有限公司 | A kind of brake shoe iron boring jig |
| CN107378348A (en) * | 2017-08-30 | 2017-11-24 | 山东力得制动科技有限公司 | A kind of truck drum brake punching-welding shoe iron welds special fixture |
| CN207710197U (en) * | 2017-12-25 | 2018-08-10 | 山东力得制动科技有限公司 | A kind of welding brake punching-welding shoe iron inclination web swinging built-up jig |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109249171A (en) | 2019-01-22 |
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