阅读说明：本技术 一种螺簧座、横摆臂定位销与轴管总成拼装焊接夹具及其使用方法 (Assembling and welding fixture for spiral spring seat, transverse swing arm positioning pin and shaft tube assembly and using method thereof ) 是由 胥燕国 欧长高 雷兴伟 何荣 支强 章来 范波 于 2021-10-28 设计创作，主要内容包括：本发明涉及一种螺簧座、横摆臂定位销与轴管总成拼装焊接夹具及其使用方法,拼装焊接夹具包括底架、底板、导轨、U型体、第一插销、挡销、螺簧座、横摆臂定位销定位装置、螺簧座定位装置、T形螺母,所述底板固定在底架上,导轨通过螺钉固定连接在所述底板上,所述第一插销安装在U型体上；挡销通过过盈配合连接在U型体上、U型体、螺簧座、横摆臂定位销定位装置、螺簧座定位装置通过螺栓与T型螺母连接并安装在工装平台的导轨上,保证两U型体同轴。本发明操作简单,效果稳定,保证螺簧座、横摆臂定位销与轴管总成拼装焊接的尺寸精度及稳定性,保证产品质量,大大提高了加工效率,减轻了工人的劳动强度。(The invention relates to a welding fixture for assembling a spiral spring seat, a transverse swing arm positioning pin and a shaft tube assembly and a using method thereof, wherein the welding fixture for assembling comprises an underframe, a bottom plate, a guide rail, a U-shaped body, a first bolt, a stop pin, a spiral spring seat, a transverse swing arm positioning pin positioning device, a spiral spring seat positioning device and a T-shaped nut, wherein the bottom plate is fixed on the underframe, the guide rail is fixedly connected on the bottom plate through a screw, and the first bolt is arranged on the U-shaped body; the stop pin is connected to the U-shaped body through interference fit, the U-shaped body, the spiral spring seat, the transverse swing arm positioning pin positioning device and the spiral spring seat positioning device are connected with the T-shaped nut through bolts and are installed on a guide rail of the tooling platform, and the two U-shaped bodies are guaranteed to be coaxial. The invention has simple operation and stable effect, ensures the size precision and stability of the assembly welding of the spring seat, the transverse swing arm positioning pin and the shaft tube assembly, ensures the product quality, greatly improves the processing efficiency and lightens the labor intensity of workers.)

1. A welding fixture for assembling a spiral spring seat, a transverse swing arm positioning pin and an axle tube assembly is characterized by comprising an underframe (1), a bottom plate (2), a guide rail (3), a U-shaped body (4), a first bolt (5), a stop pin (6), a spiral spring seat, a transverse swing arm positioning pin positioning device (7), a spiral spring seat positioning device (8) and a T-shaped nut (9), wherein the bottom plate (2) is fixed on the underframe (1), the guide rail (3) is fixedly connected to the bottom plate (2) through a screw, and the first bolt (5) is installed on the U-shaped body (4);

the stop pin (6) is connected to the U-shaped body (4) through interference fit, the U-shaped body (4), the spiral spring seat, the transverse swing arm positioning pin positioning device (7) and the spiral spring seat positioning device (8) are connected with the T-shaped nut (9) through bolts and are installed on the guide rail (3) of the tooling platform, and the two U-shaped bodies (4) are guaranteed to be coaxial.

2. The splicing and welding fixture for the spiral spring seat, the transverse swing arm positioning pin and the shaft tube assembly according to claim 1, wherein the spiral spring seat and the transverse swing arm positioning pin positioning device (7) comprises a bottom plate (10), a first supporting plate (11), a connecting plate (12), a positioning block connecting plate (13), a first positioning block (14), a first positioning pin (15), a first copper sleeve (16), a first magnet (17), a first rotating pin (18), a second pin (19), a second supporting plate (20), a U-shaped positioning block (21), a press hook (22), a second rotating pin (23) and a press bolt (24).

3. The assembling and welding fixture for the spiral spring seat, the transverse swing arm positioning pin and the shaft tube assembly according to claim 2, it is characterized in that the first supporting plate (11) is fixedly connected on the bottom plate (10), the connecting plate (12) is fixedly connected to the first supporting plate (11), the positioning block connecting plate (13) is connected to the connecting plate (12) through a first rotating pin (18), the second bolt (19) connects the positioning block connecting plate (13) with the connecting plate (12), the first positioning block (14) is fixedly connected to the positioning block connecting plate (13), the first locating pin (15) is connected to the first locating block (14) through interference fit, the first magnet (17) is connected to the first red copper sleeve (16) in an interference fit manner, and the first red copper sleeve (16) is connected to the first positioning block (14) in an interference fit manner;

the second supporting plate (20) is fixedly connected to the base plate (10), the U-shaped positioning block (21) is fixedly connected to the second supporting plate (20), the pressing hook (22) is connected to the U-shaped positioning block (21) through a second rotating pin (23), and the pressing bolt (24) is in threaded connection with the pressing hook (22).

4. The splicing and welding fixture for the spiral spring seat, the transverse swing arm positioning pin and the shaft tube assembly according to claim 2, wherein the spiral spring seat positioning device (8) comprises a bottom plate (25), a supporting plate (26), a connecting plate (27), a positioning block connecting plate (28), a second positioning block (29), a second positioning pin (30), a second red copper sleeve (31), a second magnet (32), a third rotating pin (33) and a third plug pin (34).

5. The splicing and welding fixture for the spiral spring seat, the transverse swing arm positioning pin and the shaft tube assembly is characterized in that the supporting plate (26) is fixedly connected to the bottom plate (25), the connecting plate (27) is fixedly connected to the supporting plate (26), the positioning block connecting plate (18) is connected to the connecting plate (27) through a third rotating pin (33), the third bolt (34) connects the positioning block connecting plate (28) and the connecting plate (27), the second positioning block (29) is fixedly connected to the positioning block connecting plate (28), the second positioning pin (30) is connected to the second positioning block (29) through interference fit, the second magnet (32) is connected to the second red copper sleeve (31) through interference fit, and the second red copper sleeve (31) is connected to the second positioning block (29) through interference fit.

6. The utility model provides a welding jig's application method is assembled with central siphon assembly to spiral spring seat, horizontal swing arm locating pin which characterized in that includes following step:

step 1: firstly, shaft heads at two ends of a shaft tube assembly (35) are placed in a U-shaped groove on a U-shaped body (4), one side of a flange on the shaft head leans against a stop pin (6), and a first bolt (5) is inserted into a hole of the U-shaped body (4) and a flange hole on the shaft tube assembly (35);

step 2: a workpiece transverse swing arm positioning pin (37) is arranged in a U-shaped groove on a U-shaped positioning block (21) of a spiral spring seat and transverse swing arm positioning pin positioning device (7), the end face of the transverse swing arm positioning pin (37) is tightly attached to the end face of the U-shaped positioning block (21), a pressing hook (22) is rotated, and a pressing bolt (24) is screwed, so that the pressing bolt (24) presses the transverse swing arm positioning pin (37) in the U-shaped groove on the U-shaped positioning block (21);

and 3, step 3: a workpiece spring seat (36) is arranged in a first positioning pin (15) on a first positioning block (14) of a spring seat and transverse swing arm positioning pin positioning device (7), a first magnet (17) automatically attracts the spring seat (36), a positioning block connecting plate (13) is turned to enable the spring seat (36) to be in contact with an axle tube assembly (35), and a second bolt (19) is inserted into connecting holes of the positioning block connecting plate (13) and the connecting plate (12);

and 4, step 4: a workpiece spring seat (36) is arranged in a second positioning pin (30) on a second positioning block (29) of the spring seat positioning device (8), a second magnet (32) automatically attracts the spring seat (36), a positioning block connecting plate (28) is turned to enable the spring seat (36) to be in contact with an axle tube assembly (35), and a third bolt (34) is inserted into connecting holes of the positioning block connecting plate (28) and the connecting plate (27);

and 5, step 5: welding, wherein the welding parameters comprise current 220-280A, voltage 24-28V and air flow 20-25L/Min, the welding is carried out according to the process requirements, and the relevant dimensions of the transverse swing arm positioning pin (37) and the spiral spring seat (36) are consistent with those of the drawing through welding;

and 6, step 6: after welding, pulling out a second bolt (19) on the spring seat and the transverse swing arm positioning pin positioning device (7), and turning the positioning block connecting plate (13) to separate the first positioning block (14) from the spring seat (36);

pulling out a third bolt (34) on the spring seat positioning device (8), and turning the positioning block connecting plate (28) to separate the second positioning block (29) from the spring seat (36);

and (3) loosening the compression bolts (24) on the spring seat and transverse swing arm positioning pin positioning devices (7), and taking out the welded shaft tube assembly (35) through a lifting appliance.

Technical Field

The invention relates to the technical field of automobile welding fixtures, in particular to an assembling and welding fixture for a rear axle type spiral spring seat, a transverse swing arm positioning pin and a shaft tube assembly of a new energy electric automobile and a using method of the assembling and welding fixture.

Background

Various supports on the rear axle of the new energy electric automobile are important connecting parts for bearing the rear axle and the frame or balancing the stability and the safety of the frame, and the assembling size of the supports directly influences various performances of the automobile.

For example, the invention is an invention patent with the application number of 201910831171.1 and the patent name of a welding clamp for assembling an SUV-type spiral spring seat and stabilizer bar bracket assembly, an oil pipe bracket assembly and an axle housing body assembly, and comprises a tool platform, a head and tail seat assembly, a spiral spring seat positioning device, a transverse stabilizer bar bracket assembly positioning device, an oil pipe bracket assembly positioning device and a T-shaped nut; the head-tail seat assembly, the spiral spring seat positioning device, the transverse stabilizer bar support assembly positioning device and the oil pipe support assembly positioning device are respectively connected with a T-shaped nut through bolts and are respectively installed on a first guide rail and a second guide rail of the tooling platform, so that the centers of the two head-tail seat assembly and the central positioning device are coaxial. The traditional rear axle housing assembly assembling and welding clamp of the company cannot meet the technological requirements of assembling and forming multiple accessories and axle tubes.

As another example, the patent application No. 202021912441.6 entitled positioning mechanism and system includes a positioning bracket, and further includes: a positioning pin including a positioning portion and a fixing portion integrally provided with the positioning portion, the fixing portion including a fixing block; the connecting module is arranged on the positioning support and comprises an oblong mounting hole; the fixing block is inserted in the mounting hole and comprises at least two mounting positions, when the mounting positions are different, the connecting module is fixedly connected with the positioning pin, and the center lines of the positioning parts are not overlapped with each other. The positioning mechanism has the advantages of complex structure, high requirement on manufacturing precision and high cost, is generally adopted on an automatic welding fixture, and cannot adapt to the assembly requirement of multiple accessories and shaft tubes.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a clamp for assembling and welding a spiral spring seat, a transverse swing arm positioning pin and an axle tube assembly and a using method thereof.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

a welding fixture for assembling a spiral spring seat, a transverse swing arm positioning pin and a shaft tube assembly comprises an underframe, a bottom plate, a guide rail, a U-shaped body, a first bolt, a stop pin, a spiral spring seat, a transverse swing arm positioning pin positioning device, a spiral spring seat positioning device and a T-shaped nut, wherein the bottom plate is fixed on the underframe, the guide rail is fixedly connected to the bottom plate through a screw, and the first bolt is installed on the U-shaped body;

the stop pin is connected to the U-shaped body through interference fit, the U-shaped body, the spiral spring seat, the transverse swing arm positioning pin positioning device and the spiral spring seat positioning device are connected with the T-shaped nut through bolts and are installed on a guide rail of the tooling platform, and the two U-shaped bodies are guaranteed to be coaxial.

Furthermore, the positioning device for the spring seat and the transverse swing arm positioning pin comprises a bottom plate, a first supporting plate, a connecting plate, a positioning block connecting plate, a first positioning block, a first positioning pin, a red copper sleeve, a first magnet, a first rotating pin, a second bolt, a second supporting plate, a U-shaped positioning block, a pressing hook, a second rotating pin and a pressing bolt.

Further, the first support plate is fixedly connected to the bottom plate, the connecting plate is fixedly connected to the first support plate, the locating block connecting plate is connected to the connecting plate through a first rotating pin, the locating block connecting plate is connected to the connecting plate through a second bolt, the first locating block is fixedly connected to the locating block connecting plate, the first locating pin is connected to the first locating block through interference fit, the first magnet is connected to the red copper sleeve through interference fit, and the red copper sleeve is connected to the first locating block through interference fit;

the second bearing plate is fixedly connected to the bottom plate, the U-shaped positioning block is fixedly connected to the second bearing plate, the pressing hook is connected to the U-shaped positioning block through a second rotating pin, and the pressing bolt is in threaded connection with the pressing hook.

Further, the spiral spring seat positioning device comprises a bottom plate, a supporting plate, a connecting plate, a positioning block connecting plate, a second positioning block, a second positioning pin, a red copper sleeve, a second magnet, a third rotating pin and a third bolt.

Further, the support plate is fixedly connected to the base plate, the connecting plate is fixedly connected to the support plate, the positioning block connecting plate is connected to the connecting plate through a third rotating pin, the third bolt connects the positioning block connecting plate to the connecting plate, the second positioning block is fixedly connected to the positioning block connecting plate, the second positioning pin is connected to the second positioning block through interference fit, the second magnet is connected to the second red copper sleeve through interference fit, and the second red copper sleeve is connected to the second positioning block through interference fit.

A use method of a welding fixture for assembling a spiral spring seat, a transverse swing arm positioning pin and an axle tube assembly comprises the following steps:

step 1: firstly, shaft heads at two ends of a shaft tube assembly are placed in a U-shaped groove on a U-shaped body, one side of a flange on the shaft head leans against a stop pin, and a first bolt is inserted into a hole of the U-shaped body and a flange hole on the shaft tube assembly;

step 2: a workpiece transverse swing arm positioning pin is arranged in a U-shaped groove on a U-shaped positioning block of a spiral spring seat and transverse swing arm positioning pin positioning device, the end face of the transverse swing arm positioning pin is tightly attached to the end face of the U-shaped positioning block, a pressing hook is rotated, and a pressing bolt is screwed tightly, so that the pressing bolt presses the transverse swing arm positioning pin in the U-shaped groove on the U-shaped positioning block;

and 3, step 3: a workpiece spiral spring seat is arranged in a first positioning pin on a first positioning block of a spiral spring seat and transverse swing arm positioning pin positioning device, a first magnet automatically attracts the spiral spring seat, a positioning block connecting plate is pulled to enable the spiral spring seat to be in contact with an axle tube assembly, and a second bolt is inserted into connecting holes of the positioning block connecting plate and the connecting plate;

and 4, step 4: a workpiece spiral spring seat is arranged in a second positioning pin on a second positioning block of the spiral spring seat positioning device, a second magnet automatically attracts the spiral spring seat, a positioning block connecting plate is turned to enable the spiral spring seat to be in contact with the shaft tube assembly, and a third bolt is inserted into connecting holes of the positioning block connecting plate and the connecting plate;

and 5, step 5: welding, wherein welding parameters comprise current-A, voltage-V and gas flow-L/Min, welding is carried out according to the process requirements, and the relevant dimensions of the transverse swing arm positioning pin and the spiral spring seat are consistent with the relevant dimensions of a drawing through welding;

and 6, step 6: after welding, pulling out a second bolt on the positioning device of the spring seat and the transverse swing arm positioning pin, and turning the positioning block connecting plate to separate the first positioning block from the spring seat;

pulling out a third bolt on the spring seat positioning device, and turning the positioning block connecting plate to separate the second positioning block from the spring seat;

and loosening the compression bolts on the positioning devices of the spring seat and the transverse swing arm positioning pin, and taking out the welded shaft tube assembly through the lifting appliance.

The invention has the beneficial effects that: the invention respectively and independently installs and fixes the spring seat, the transverse swing arm positioning pin and the shaft tube assembly, has simple operation and stable effect, ensures the size precision and the stability of the splicing and welding of the spring seat, the transverse swing arm positioning pin and the shaft tube assembly through the ingenious structural design of the clamp in the assembling process, ensures the product quality, greatly improves the processing efficiency and lightens the labor intensity of workers. The clamp has wide application range of products, and stable quality due to the splicing and welding of the clamp spiral spring seat, the transverse swing arm positioning pin and the shaft tube assembly.

Drawings

FIG. 1 is a general schematic diagram of an embodiment of the present invention;

FIG. 1a is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 1B is a schematic cross-sectional view taken along line B-B of FIG. 1;

FIG. 1C is a schematic cross-sectional view taken along line C-C of FIG. 1;

FIG. 2 is a schematic front view of a U-shaped body according to an embodiment of the present invention;

FIG. 3a is a schematic front view of a positioning device for a spring seat and a positioning pin of a lateral swing arm according to an embodiment of the present invention;

FIG. 3b is a schematic side view of a positioning device for a spring seat and a positioning pin of a lateral swing arm according to an embodiment of the present invention;

FIG. 4a is a schematic front view of a positioning device of a spring seat according to an embodiment of the present invention;

FIG. 4b is a schematic side view of a positioning device for a coil spring seat according to an embodiment of the present invention;

FIG. 5a is a schematic diagram of a workpiece structure according to an embodiment of the present invention;

FIG. 5b is a side schematic view of FIG. 5 a;

FIG. 5c is a schematic cross-sectional view taken along line A-A of FIG. 5 a;

fig. 5d is a schematic cross-sectional view taken along line B-B in fig. 5 c.

Description of reference numerals: the device comprises an underframe 1, a bottom plate 2, a guide rail 3, a U-shaped body 4, a first bolt 5, a stop pin 6, a spring seat, a transverse swing arm positioning pin positioning device 7, a spring seat positioning device 8, a T-shaped nut 9, a bottom plate 10, a first supporting plate 11, a connecting plate 12, a positioning block connecting plate 13, a first positioning block 14, a first positioning pin 15, a first red copper sleeve 16, a first magnet 17, a first rotating pin 18, a second bolt 19, a second supporting plate 20, a U-shaped positioning block 21, a press hook 22, a second rotating pin 23, a press bolt 24, a bottom plate 25, a supporting plate 26, a connecting plate 27, a positioning block connecting plate 28, a second positioning block 29, a second positioning pin 30, a second red copper sleeve 31, a second magnet 32, a third rotating pin 33, a third bolt 34, an axle tube assembly 35, a spring seat 36 and a transverse swing arm positioning pin 37.

Detailed Description

The present invention can be embodied by the techniques explained in the summary of the invention, and the present invention will be further described by the following examples, to which the scope of the present invention is not limited.

As shown in fig. 1 to 5d, an assembling and welding fixture for a coil spring seat, a transverse swing arm positioning pin and an axle tube assembly comprises an underframe 1, a bottom plate 2, a guide rail 3, a U-shaped body 4, a first bolt 5, a stop pin 6, a coil spring seat, a transverse swing arm positioning pin positioning device 7, a coil spring seat positioning device 8 and a T-shaped nut 9; wherein, chassis 1 adopts the bugle steel welding to form, and bottom plate 2 is fixed on chassis 1, and guide rail 3 passes through screw fixed connection and is in on bottom plate 2, first bolt 5 is installed on U type body 4.

The stop pin 6 is connected to the U-shaped body 4 through interference fit, and the U-shaped body 4, the spiral spring seat, the transverse swing arm positioning pin positioning device 7 and the spiral spring seat positioning device 8 are connected with the T-shaped nut 9 through bolts and are respectively installed on the guide rail 3 of the tooling platform, so that the two U-shaped bodies 4 are coaxial.

The spring seat and transverse swing arm positioning pin positioning device 7 comprises a bottom plate 10, a first supporting plate 11, a connecting plate 12, a positioning block connecting plate 13, a first positioning block 14, a first positioning pin 15, a first copper sleeve 16, a first magnet 17, a first rotating pin 18, a second bolt 19, a second supporting plate 20, a U-shaped positioning block 21, a press hook 22, a second rotating pin 23 and a pressing bolt 24. The first supporting plate 11 is fixedly connected to the bottom plate 10 through clamping groove positioning and screws, the connecting plate 12 is fixedly connected to the first supporting plate 11 through clamping groove positioning and screws, the positioning block connecting plate 13 is connected to the connecting plate 12 through a first rotating pin 18, the second bolt 19 connects the positioning block connecting plate 13 with the connecting plate 12, the first positioning block 14 is fixedly connected to the positioning block connecting plate 13 through clamping groove positioning and screws, the first positioning pin 15 is connected to the first positioning block 14 through interference fit, the first magnet 17 is connected to the first red copper sleeve 16 through interference fit, and the first red copper sleeve 16 is connected to the first positioning block 14 through interference fit; the second support plate 20 is fixedly connected to the base plate 10 through a clamping groove positioning and a screw, the U-shaped positioning block 21 is fixedly connected to the second support plate 20 through a clamping groove positioning and a screw, the press hook 22 is connected to the U-shaped positioning block 21 through a second rotating pin 23, and the press bolt 24 is connected to the press hook 22 through a thread.

Further, the coil spring seat positioning device 8 includes a bottom plate 25, a support plate 26, a connecting plate 27, a positioning block connecting plate 28, a second positioning block 29, a second positioning pin 30, a second copper jacket 31, a second magnet 32, a third rotation pin 33, and a third plug pin 34. Bearing plate 26 is through draw-in groove location and screw fixed connection on bottom plate 25, connecting plate 27 is through draw-in groove location and screw fixed connection on bearing plate 26, locating piece connecting plate 18 is connected on connecting plate 27 through third swivel pin 33, third bolt 34 is connected locating piece connecting plate 28 and connecting plate 27, second locating piece 29 is through draw-in groove location and screw fixed connection on locating piece connecting plate 28, second locating pin 30 is connected on second locating piece 29 through interference fit, second magnet 32 is connected on second red copper cover 31 through interference fit, second red copper cover 31 is connected on second locating piece 29 through interference fit.

The specific welding process of the clamp is as follows:

step 1: the shaft heads at two ends of the shaft tube assembly 35 are placed in a U-shaped groove in the U-shaped body 4, one side of a flange on the shaft head leans against the stop pin 6, and the first bolt 5 is inserted into a hole in the U-shaped body 4 and a flange hole in the shaft tube assembly 35.

Step 2: a workpiece transverse swing arm positioning pin 37 is arranged in a U-shaped groove in a U-shaped positioning block 21 of a spiral spring seat and transverse swing arm positioning pin positioning device 7, the end face of the transverse swing arm positioning pin 37 is tightly attached to the end face of the U-shaped positioning block 21, a pressing hook 22 is rotated, and a pressing bolt 24 is screwed down, so that the pressing bolt 24 presses the transverse swing arm positioning pin 37 in the U-shaped groove in the U-shaped positioning block 21.

And 3, step 3: the workpiece spring seat 36 is arranged in the first positioning pin 15 on the first positioning block 14 of the spring seat and transverse swing arm positioning pin positioning device 7, the first magnet 17 automatically attracts the spring seat 36, the positioning block connecting plate 13 is rotated to enable the spring seat 36 to be in contact with the shaft tube assembly 35, and the second bolt 19 is inserted into connecting holes of the positioning block connecting plate 13 and the connecting plate 12.

And 4, step 4: the workpiece spring seat 36 is arranged in the second positioning pin 30 on the second positioning block 29 of the spring seat positioning device 8, the second magnet 32 automatically attracts the spring seat 36, the positioning block connecting plate 28 is rotated to enable the spring seat 36 to be in contact with the shaft tube assembly 35, and the third bolt 34 is inserted into the connecting holes of the positioning block connecting plate 28 and the connecting plate 27.

And 5, step 5: welding, wherein the welding parameters comprise current 220-280A, voltage 24-28V and gas flow 20-25L/Min, and the welding is carried out according to the process requirements. Through welding, the relevant dimensions of the transverse swing arm positioning pin 37 and the spiral spring seat 36 are consistent with those of the drawing.

And 6, step 6: after welding, pulling out the second bolt 19 on the spring seat and the transverse swing arm positioning pin positioning device 7, and turning the positioning block connecting plate 13 to separate the first positioning block 14 from the spring seat 36; pulling out the third bolt 34 on the spring seat positioning device 8, and turning the positioning block connecting plate 28 to separate the second positioning block 29 from the spring seat 36; loosening the compression bolt 24 on the positioning device 7 of the spring seat and the transverse swing arm positioning pin; and then the welded axle tube assembly 35 is taken out through the lifting appliance.

The invention respectively and independently installs and fixes the spring seat, the transverse swing arm positioning pin and the shaft tube assembly, has simple operation and stable effect, ensures the size precision and the stability of the splicing and welding of the spring seat, the transverse swing arm positioning pin and the shaft tube assembly through the ingenious structural design of the clamp in the assembling process, ensures the product quality, greatly improves the processing efficiency and lightens the labor intensity of workers. The clamp has wide application range of products, and stable quality due to the splicing and welding of the clamp spiral spring seat, the transverse swing arm positioning pin and the shaft tube assembly.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.