A fixture for triangular arm processing

Abstract

A fixture for processing a triangular arm includes a base and a first, second, and third fixed support seat, a floating support seat, a ball pin seat limiting mechanism, a connecting arm limiting mechanism, and a clamping device corresponding to each support seat, wherein the first, second, and third fixed support seats are distributed in a triangle, the floating support seat is located between the first and second fixed support seats / the third fixed support seat, the floating support seat includes a seat body and a floating column that is clearance-fitted in the seat body, a compression spring is arranged between the floating column and the seat body, driving the floating column to move in a vertical direction, and locked by a locking mechanism, the clamping device includes a column, and a slider that is slidably fitted on the column, each slider is located above the corresponding support seat, and is positioned by a clamping nut on the column. The present invention has a simple structure and is easy to use, and can efficiently and stably clamp a triangular arm that is slightly deformed during the forming process, facilitate subsequent processing, and effectively ensure the processing accuracy of the triangular arm.

Description

Technical Field

[0001] The invention relates to the field of tooling fixtures, and in particular to a fixture for processing triangular arms. Background Art

[0002] See also Figure 1 , is a schematic diagram of the structure of a triangular arm, including a ball pin seat, a first connecting arm, and a second connecting arm, wherein a reinforcing beam is arranged between the first connecting arm and the second connecting arm, wherein the first connecting arm / the second connecting arm is bent in an L shape. The triangular arm of this structure has two types, left type and right type. After the triangular arm of each type is cast, it needs to be further processed for installing the ball pin, bushing and other auxiliary parts.

[0003] At present, when the commonly used clamp is used to clamp the triangular arm, the ball pin seat of the triangular arm and the extended ends of the two connecting arms need to be supported on the corresponding support seats of the clamp respectively, and then fixed by pressing with a pressing block. Since the triangular arm will be slightly deformed during the cooling process of casting, the plane where the ball pin seat of the triangular arm and the extended ends of the connecting arm are located will have deviations. After the pressing block is pressed, one corner of the triangular arm cannot be effectively supported on the corresponding support seat, and cannot form effective support, which seriously affects the accuracy of subsequent processing.

[0004] Therefore, how to design a clamp that can stably clamp the triangular arm of this structure is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0005] The purpose of the present invention is to provide a fixture for processing triangular arms in view of the deficiencies in the prior art. The fixture has a simple structure and is easy to use. It can efficiently and stably clamp triangular arms that are slightly deformed during the forming process, facilitate subsequent processing, and effectively ensure the processing accuracy of the triangular arms.

[0006] The technical solution of the present invention is: a fixture for processing a triangular arm, comprising a base, and a vertical positioning mechanism and a horizontal positioning mechanism arranged on the base, the vertical positioning mechanism comprising a first fixed support seat, a second fixed support seat, a third fixed support seat, a floating support seat, and a clamping device corresponding to each support seat, the first fixed support seat, the second fixed support seat, and the third fixed support seat are distributed in a triangular shape, corresponding to the ball pin seat of the triangular arm, the extended end of the first connecting arm, and the extended end of the second connecting arm, respectively, the floating support seat is located between the first fixed support seat and the second fixed support seat / the third fixed support seat, corresponding to the L-shaped bending section of the first connecting arm / the second connecting arm, The floating support seat includes a seat body and a floating column with a clearance fit in the seat body. A compression spring is arranged between the floating column and the seat body to drive the floating column to move in the vertical direction and lock it through a locking mechanism. The clamping device includes a column and a slider slidably fitted on the column. Each slider is located above the corresponding support seat and is positioned by a clamping nut on the column. The horizontal positioning mechanism includes a ball pin seat limiting mechanism and a connecting arm limiting mechanism. The ball pin seat limiting mechanism corresponds to the ball pin seat of the triangular arm. The ball pin seat limiting mechanism includes a V-shaped positioning groove opening toward the first fixed support seat and a reinforcing beam top rod for horizontally extruding the triangular arm reinforcing beam. The reinforcing beam top rod extends toward the V-shaped positioning groove. The connecting arm limiting mechanism corresponds to the connecting arm of the triangular arm. The connecting arm limiting mechanism includes a left top rod and a right top rod for horizontally extruding the connecting arm. The left top rod and the right top rod are respectively located on the left and right sides of the first connecting arm / the second connecting arm of the triangular arm, extend toward each other, and are vertically distributed with the reinforcing beam top rod.

[0007] The base is rotatably supported on the turntable seat, and a latch passes through the base and the turntable to form a circumferential locking.

[0008] There are two floating support seats, which are respectively located between the first fixed support seat and the second fixed support seat, and between the first fixed support seat and the third fixed support seat.

[0009] The seat body is provided with an upwardly opening mounting hole, the mounting hole is a stepped hole, the floating column is a stepped shaft, the large diameter section of the floating column is clearance-fitted in the small diameter section of the mounting hole, a compression spring is provided between the lower end of the floating column and the bottom of the mounting hole, driving the floating column to have an upward movement tendency, and a pressure cover threadedly fits in the large diameter section of the mounting hole to form an axial limit for the floating column.

[0010] The large diameter section of the floating column is provided with an axially extending strip groove, and the locking mechanism is a locking bolt, the screw thread of which is engaged with the seat body and radially extends into the strip groove of the floating column to lock the position of the floating column.

[0011] It also includes stabilizing columns, the number of which is adapted to the number of the sliders.

[0012] The slider is provided with a strip hole extending along the length direction of the slider, and the lower end surface of the slider is provided with an open groove extending along the length direction of the slider. The column is located between the stabilizing column and the corresponding supporting seat. One end of the slider is supported on the upper end of the corresponding stabilizing column through the open groove, and the other end is used to clamp the triangular arm.

[0013] The number of the connecting arm limiting mechanisms is two, corresponding to the first connecting arm and the second connecting arm of the triangular arm respectively.

[0014] Two mounting seats are fixedly provided on the base, which are respectively located on both sides of the connecting arm of the triangular arm. The left push rod and the right push rod are threadedly matched on the corresponding mounting seats and are locked in position by a locking nut.

[0015] A plurality of hanging rings are fixedly arranged on the base.

[0016] The above technical solution has the following beneficial effects:

[0017] 1. A fixture for processing a triangular arm includes a base, and a vertical positioning mechanism and a horizontal positioning mechanism arranged on the base, wherein the vertical positioning mechanism is used to position the triangular arm in the vertical direction, and the horizontal positioning mechanism is used to position the triangular arm in the horizontal direction. The vertical positioning mechanism includes a first fixed support seat, a second fixed support seat, a third fixed support seat, a floating support seat, and a clamping device corresponding to each support seat, wherein the first fixed support seat, the second fixed support seat, and the third fixed support seat are distributed in a triangular shape, corresponding to the ball pin seat of the triangular arm, the extension end of the first connecting arm, and the extension end of the second connecting arm, respectively, that is, under normal circumstances, the ball pin seat of the triangular arm is supported on the first fixed support seat, the extension end of the first connecting arm is supported on the second fixed support seat, and the extension end of the second connecting arm is supported on the third fixed support seat. The floating support seat is located between the first fixed support seat and the second fixed support seat / the third fixed support seat, corresponding to the L-shaped bending section of the first connecting arm / the second connecting arm, the floating support seat includes a seat body and a floating column with a clearance fit in the seat body, a compression spring is arranged between the floating column and the seat body, driving the floating column to move in the vertical direction and locked by a locking mechanism, that is, when the triangular arm is slightly deformed, resulting in the inability of the ball pin seat of the triangular arm, the extended end of the first connecting arm and the extended end of the second connecting arm to be accurately supported on the corresponding fixed support seat at three points, the fixed support seat corresponding to the deformation of the triangular arm is selectively removed, so that two points of the triangular arm are accurately supported on the corresponding fixed support seat, the L-shaped bending section of the triangular arm is floatingly supported on the floating support seat, and after the supporting position is stable, the locking mechanism is used to lock the floating support seat, and the remaining two fixed support seats and the floating support seat are still distributed in a triangle. On the premise of ensuring the accurate positioning of the triangular arm, the stability of the triangular arm in the vertical direction can also be effectively guaranteed, and the accuracy of subsequent processing of the triangular arm can be guaranteed. The clamping device includes a column and a slider that is slidably matched on the column. Each slider is located above the corresponding support seat and is positioned by a clamping nut on the column. When the triangular arm is stably supported on the corresponding support seat, the pressure block is used to clamp the corresponding position of the triangular arm so that the three points of the triangular arm can be stably supported on the corresponding fixed support seat and floating support seat, and the triangular arm is positioned in the vertical direction. The horizontal positioning mechanism includes a ball pin seat limiting mechanism and a connecting arm limiting mechanism, wherein the ball pin seat limiting mechanism is used to limit the ball pin seat of the triangular arm in the horizontal direction, and the connecting arm limiting mechanism is used to limit the connecting arm of the triangular arm in the horizontal direction.The ball pin seat limiting mechanism corresponds to the ball pin seat of the triangular arm, the ball pin seat limiting mechanism includes a V-shaped positioning groove opening toward the first fixed support seat, and a reinforcing beam top rod for horizontally extruding the triangular arm reinforcing beam, the reinforcing beam top rod extends toward the V-shaped positioning groove, the connecting arm limiting mechanism corresponds to the connecting arm of the triangular arm, the connecting arm limiting mechanism includes a left top rod and a right top rod for horizontally extruding the connecting arm, the left top rod and the right top rod are respectively located on the left side and the right side of the first connecting arm / the second connecting arm of the triangular arm, extend toward each other, and are vertically distributed with the reinforcing beam top rod. After the triangular arm is supported on the corresponding support seat, the reinforcing beam top rod and the V-shaped positioning groove are used to position the triangular arm along the Y-axis direction on the horizontal plane, and the left top rod and the right top rod are used to position the triangular arm along the X-axis direction on the horizontal plane, so that the triangular arm is stably positioned on the fixture, effectively ensuring the processing accuracy of the triangular arm.

[0018] 2. The base is rotatably supported on the turntable seat, and a latch passes through the base and the turntable to form a circumferential lock, so that the base can rotate to meet actual needs.

[0019] 3. There are two floating support seats, which are respectively located between the first fixed support seat and the second fixed support seat, and between the first fixed support seat and the third fixed support seat, which can meet the positioning requirements of the left-type triangular arm and the right-type triangular arm at the same time.

[0020] 4. It also includes stabilizing columns, the number of which is adapted to the number of sliders. The slider is provided with a strip hole extending along the length direction of the slider, and the lower end surface of the slider is provided with an open groove extending along the length direction of the slider. The column is located between the stabilizing column and the corresponding support seat. One end of the slider is supported on the upper end of the corresponding stabilizing column through the open groove, and the other end is used to clamp the triangular arm. The horizontal position of the slider along the extension direction of the open groove is adjustable to meet the requirements of clamping and positioning. One end of the slider is supported by the stabilizing column, and the other end is supported by the triangular arm to ensure the stability of the pressing block, thereby effectively ensuring the stability of the triangular arm.

[0021] Further description is given below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a triangular arm in the background technology;

[0023] Figure 2 is an axonometric view of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the floating support seat of the present invention;

[0026] Figure 5 It is a schematic diagram of the clamping triangular arm of the present invention;

[0027] Figure 6 It is an axonometric view of the clamping triangle arm of the present invention.

[0028] In the accompanying drawings, 1 is a base, 2 is a vertical positioning mechanism, 21 is a first fixed support seat, 22 is a second fixed support seat, 23 is a third fixed support seat, 24 is a floating support seat, 241 is a seat body, 2411 is a mounting hole, 242 is a floating column, 2421 is a strip groove, 243 is a compression spring, 244 is a locking mechanism, 245 is a pressure cover, 25 is a clamping device, 251 is a column, 252 is a slider, 2521 is a strip hole, 253 is a clamping nut, 26 is a stabilizing column, 3 is a horizontal positioning mechanism, 31 is a ball pin seat limiting mechanism, 311 is a V-shaped positioning groove, 312 is a reinforcing beam top rod, 32 is a connecting arm limiting mechanism, 321 is a left top rod, 322 is a right top rod, 33 is a mounting seat, 34 is a locking nut, 4 is a latch, and 5 is a lifting ring. DETAILED DESCRIPTION

[0029] In the present invention, components without indicating specific structures or connection methods are generally conventional components or connection methods.

[0030] See also Figures 2 to 6, which is a specific embodiment of a fixture for triangular arm processing. The fixture for triangular arm processing includes a base 1, and a vertical positioning mechanism 2 and a horizontal positioning mechanism 3 arranged on the base 1. In this embodiment, the base is rotatably supported on the turntable seat, and a latch 4 passes through the base and the turntable to form a circumferential lock. In order to facilitate transfer, a plurality of lifting rings 5 ​​are fixedly provided on the base 1. The vertical positioning mechanism 2 includes a first fixed support seat 21, a second fixed support seat 22, a third fixed support seat 23, a floating support seat 24, and a clamping device 25 corresponding to each support seat. The first fixed support seat 21, the second fixed support seat 22, and the third fixed support seat 23 are distributed in a triangular shape, corresponding to the ball pin seat of the triangular arm, the extended end of the first connecting arm, and the extended end of the second connecting arm, respectively. Specifically, the lower ends of the first fixed support seat, the second fixed support seat, and the third fixed support seat are respectively engaged with the base through threads and locked by nuts. For the convenience of installation, there is a notch on the circumferential surface of each fixed support seat for cooperating with a wrench. In order to increase the friction against the triangular arm, a plurality of fine teeth are provided on the top of each fixed support seat. The floating support seat 24 is located between the first fixed support seat 21 and the second fixed support seat 22 / the third fixed support seat 23, corresponding to the L-shaped bending section of the first connecting arm / the second connecting arm. In this embodiment, there are two floating support seats 24, which are respectively located between the first fixed support seat 21 and the second fixed support seat 22 and between the first fixed support seat 21 and the third fixed support seat 23. Among them, the floating support seat located between the first fixed support seat 21 and the second fixed support seat 22 corresponds to the L-shaped bending section of the left triangular arm, and the floating support seat located between the first fixed support seat 21 and the third fixed support seat 23 corresponds to the L-shaped bending section of the right triangular arm. The floating support seat 24 includes a seat body 241, and a floating column 242 with a clearance fit in the seat body 241. A compression spring 243 is arranged between the floating column 242 and the seat body 241 to drive the floating column 242 to move in the vertical direction, and through the locking mechanism 244 Locking, in this embodiment, a mounting hole 2411 which opens upward is provided in the seat body 241, and the mounting hole 2411 is a stepped hole. The floating column 242 is a stepped shaft, and the large diameter section of the floating column 242 is clearance-fitted in the small diameter section of the mounting hole 2411. A compression spring 243 is provided between the lower end of the floating column 242 and the bottom of the mounting hole 2411, which drives the floating column 242 to have an upward movement tendency. A pressure cover 245 is threadedly fitted in the large diameter section of the mounting hole 2411 to form an axial limit for the floating column 242. A strip groove 2421 extending axially is provided on the large diameter section of the floating column 242. The locking mechanism 244 is a locking bolt, and the screw thread of the locking bolt is fitted on the seat body 241 and radially extends into the strip groove 2421 of the floating column 242 to lock the position of the floating column 242.The clamping device 25 includes a column 251 and a slider 252 that is slidably fitted on the column 251. Each slider 252 is located above the corresponding support seat and is positioned by a clamping nut 253 on the column 251. In this embodiment, it also includes a stabilizing column 26. The number of the stabilizing columns 26 is adapted to the number of the sliders 252. The slider 252 is provided with a strip hole 2521 extending along the length direction of the slider. The lower end surface of the slider 252 is provided with an open groove extending along the length direction of the slider. The column 251 is located between the stabilizing column 26 and the corresponding support seat. One end of the slider 252 is supported on the upper end of the corresponding stabilizing column 26 through the open groove, and the other end is used to clamp the triangular arm. The horizontal positioning mechanism 3 includes a ball pin seat limiting mechanism 31 and a connecting arm limiting mechanism 32. The ball pin seat limiting mechanism 31 corresponds to the ball pin seat of the triangular arm, and the ball pin seat limiting mechanism 31 includes a V-shaped positioning groove 311 opening toward the first fixed support seat 21, and a reinforcing beam top rod 312 for horizontally extruding the triangular arm reinforcing beam, and the reinforcing beam top rod 312 extends toward the V-shaped positioning groove 311. The connecting arm limiting mechanism 32 corresponds to the connecting arm of the triangular arm, and the connecting arm limiting mechanism 32 includes a left top rod 321 and a right top rod 322 for horizontally extruding the connecting arm, and the left top rod 321 and the right top rod 322 are respectively located on the left side and the right side of the first connecting arm / the second connecting arm of the triangular arm, extend toward each other, and are vertically distributed with the reinforcing beam top rod 312. Specifically, two mounting seats 33 are fixedly provided on the base 1, which are respectively located on both sides of the connecting arm of the triangular arm, and the left top rod 321 and the right top rod 322 are threadedly engaged on the corresponding mounting seats 33, and the position is locked by a locking nut 34. In this embodiment, in order to enhance the horizontal limiting effect of the triangular arm, the number of the connecting arm limiting mechanisms 32 is two, which respectively correspond to the first connecting arm and the second connecting arm of the triangular arm.

[0031] The working principle of the clamping triangular arm of the present invention is that, under normal circumstances, the ball pin seat of the triangular arm is supported on the first fixed support seat, the extended end of the first connecting arm is supported on the second fixed support seat, and the extended end of the second connecting arm is supported on the third fixed support seat. The triangular arm is positioned along the Y-axis direction on the horizontal plane by using the reinforcing beam top rod and the V-shaped positioning groove, and the triangular arm is positioned along the X-axis direction on the horizontal plane by using the left top rod and the right top rod. The ball pin seat position of the triangular arm, the extended end position of the first connecting arm, and the extended end position of the second connecting arm are pressed by a pressure block, so that the triangular arm is stably supported on the first fixed support seat, the second fixed support seat, and the third fixed support seat, and subsequent processing can be carried out. When the triangular arm is slightly deformed, resulting in the inability of the three points of the ball pin seat, the extended end of the first connecting arm, and the extended end of the second connecting arm to be accurately supported on the corresponding fixed support seat, the fixed support seat corresponding to the deformation of the triangular arm is selectively removed, so that two points of the triangular arm are accurately supported on the corresponding fixed support seat, and the L-shaped curved section of the triangular arm is floatingly supported on the floating support seat. After the supporting position is stable, the floating support seat is locked by a locking mechanism, and then the reinforcing beam top rod and the V-shaped positioning groove are used to position the triangular arm along the Y-axis direction on the horizontal plane, and the left top rod and the right top rod are used to position the triangular arm along the X-axis direction on the horizontal plane, and the L-shaped curved section of the triangular arm, the ball pin seat position and the extended end position of the first connecting arm or the extended end position of the second connecting arm are pressed by a pressure block, so that the triangular arm is stably supported on the floating support seat, the first fixed support seat, the second fixed support seat, or the third fixed support seat, and subsequent processing can be carried out.

Claims

1. A fixture for triangular arm processing, characterized in that: The invention comprises a base (1), and a vertical positioning mechanism (2) and a horizontal positioning mechanism (3) arranged on the base (1); the base (1) is rotatably supported on a turntable seat, and a latch (4) passes through the base and the turntable seat to form a circumferential locking. The vertical positioning mechanism (2) comprises a first fixed support seat (21), a second fixed support seat (22), a third fixed support seat (23), a floating support seat (24), and a clamping device (25) corresponding to each support seat. The first fixed support seat (21), the second fixed support seat (22), and the third fixed support seat (23) are distributed in a triangular shape, corresponding to the ball pin seat of the triangular arm, the extended end of the first connecting arm, and the extended end of the second connecting arm, respectively. The floating support seat (24) is located between the first fixed support seat (21) and the second fixed support seat (22) / the third fixed support seat (23), corresponding to the L-shaped bending section of the first connecting arm / the second connecting arm. The floating support seat (24) comprises a seat body (241) and a floating column (242). The seat body (241) is provided with a The mounting hole (2411) is open at the top, the mounting hole (2411) is a stepped hole, the floating column (242) is a stepped shaft, the large diameter section of the floating column (242) is clearance-fitted in the small diameter section of the mounting hole (2411), a compression spring (243) is provided between the lower end of the floating column (242) and the bottom of the mounting hole (2411), driving the floating column (242) to have an upward movement tendency, and is locked by a locking mechanism (244), a pressure cover (245) is threadedly fitted in the large diameter section of the mounting hole (2411), forming an axial limit for the floating column (242), The clamping device (25) comprises a column (251) and a slider (252) slidably fitted on the column (251), each slider (252) being located above a corresponding support seat and positioned by a clamping nut (253) on the column (251). The horizontal positioning mechanism (3) comprises a ball pin seat limiting mechanism (31) and a connecting arm limiting mechanism (32). The ball pin seat limiting mechanism (31) corresponds to the ball pin seat of the triangular arm, and the ball pin seat limiting mechanism (31) comprises a V-shaped positioning groove (311) opening toward the first fixed support seat (21), and a reinforcing beam top rod (312) for horizontally extruding the triangular arm reinforcing beam, and the reinforcing beam top rod (312) extends toward the V-shaped positioning groove (311). The connecting arm limiting mechanism (32) corresponds to the connecting arm of the triangular arm, and the connecting arm limiting mechanism (32) comprises a left top rod (321) and a right top rod (322) for horizontally squeezing the connecting arm, the left top rod (321) and the right top rod (322) being respectively located on the left side and the right side of the first connecting arm / the second connecting arm of the triangular arm, extending towards each other, and being vertically distributed with the reinforcing beam top rod (312).

2. The fixture for triangular arm processing according to claim 1, characterized in that: There are two floating support seats (24), which are respectively located between the first fixed support seat (21) and the second fixed support seat (22), and between the first fixed support seat (21) and the third fixed support seat (23).

3. The fixture for triangular arm processing according to claim 1, characterized in that: The large diameter section of the floating column (242) is provided with a strip groove (2421) extending in the axial direction. The locking mechanism (244) is a locking bolt. The screw thread of the locking bolt is engaged with the seat body (241) and extends radially into the strip groove (2421) of the floating column (242) to lock the position of the floating column (242).

4. The fixture for processing the triangular arm according to claim 1, characterized in that: It also includes stabilizing columns (26), the number of which is adapted to the number of the sliding blocks (252).

5. The fixture for triangular arm processing according to claim 4, characterized in that: The slider (252) is provided with a strip hole (2521) extending in the length direction of the slider, and the lower end surface of the slider (252) is provided with an open groove extending in the length direction of the slider. The column (251) is located between the stabilizing column (26) and the corresponding support seat. One end of the slider (252) is supported on the upper end of the corresponding stabilizing column (26) through the open groove, and the other end is used to press the triangular arm.

6. The fixture for processing a triangular arm according to claim 1, characterized in that: The number of the connecting arm limiting mechanisms (32) is two, corresponding to the first connecting arm and the second connecting arm of the triangular arm respectively.

7. The fixture for processing a triangular arm according to claim 1, characterized in that: Two mounting seats (33) are fixedly provided on the base (1), respectively located on both sides of the connecting arm of the triangular arm; the left top rod (321) and the right top rod (322) are threadedly engaged with the corresponding mounting seats (33) and are locked in position by a locking nut (34).

8. The fixture for processing a triangular arm according to claim 1, characterized in that: A plurality of lifting rings (5) are fixedly provided on the base (1).

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