An assembly fixture for processing a steering column

Abstract

The present invention relates to the field of fixture technology, and specifically to an assembly fixture for steering column processing, comprising a base plate, a limit assembly, a clamping assembly and a steering column body, wherein the limit assembly is installed on both sides of the top of the base plate, the limit assembly is used to limit the two ends of the steering column body, the clamping assembly is installed above the base plate, the clamping assembly is used to fix the steering column body, the clamping assembly includes a flexible clamp, the flexible clamp is movable and arranged on the outside of the steering column body, the flexible clamp includes a flexible clamping head, and the flexible clamping head can be telescopically moved. The present invention adopts a flexible clamp, and the flexible clamp has a plurality of movable flexible clamping heads, and the flexible clamping heads can move after contacting the surface of the column, and can adapt to different sizes and shapes of the column, and the flexible clamping heads have a certain elasticity and will not damage the column.

Description

Technical Field

[0001] The invention relates to the technical field of fixtures, in particular to an assembly fixture for machining a steering column. Background Art

[0002] The steering column is an important part of the car's steering system. The steering column is a tubular component that connects the steering wheel and the steering gear. Its main function is to transmit the torque applied by the driver to the steering wheel, thereby controlling the direction of the car. In addition to transmitting torque, the steering column can also absorb part of the energy generated by the car during a collision, reducing the impact on the occupants. The steering column also has an anti-theft locking function. When the driver pulls out the key, the steering column will be locked to prevent the vehicle from being stolen. When assembling the steering column, the steering column needs to be fixed to prevent the steering column from moving and affecting the assembly.

[0003] Chinese patent CN219189460U discloses a vehicle steering column clamp tooling, which relates to the field of clamp technology, including a base, a limiting assembly for limiting the position of the vehicle steering column, a head end clamping assembly for clamping the head of the vehicle steering column, and a tail end clamping assembly for clamping the tail of the vehicle steering column, and the limiting assembly limits the vehicle steering column perpendicular to the clamping direction of the head end clamping assembly and the tail end clamping assembly, and the limiting assembly, the head end clamping assembly and the tail end clamping assembly are all installed on the base.

[0004] In the above structure, the limit assembly limits the clamping direction perpendicular to the steering column, and the head end clamping assembly and the tail end clamping assembly clamp and limit the head end and the tail end of the steering column respectively. However, the steering column has different shapes and sizes according to different types of cars, resulting in the inability of traditional clamps to adapt to the shape and size of the column. In addition, since the clamping force of the traditional clamp is large, it is easy to leave clamping marks on the surface of the column, thereby affecting the quality of the column. Summary of the invention

[0005] The object of the present invention is to provide an assembly fixture for steering column processing using a flexible clamp, wherein the flexible clamp has a plurality of movable flexible clamping heads, and the flexible clamping heads can move after contacting the surface of the column, and can adapt to different sizes and shapes of the column, and the flexible clamping heads have a certain elasticity and will not damage the column.

[0006] In order to solve the problems of the prior art, the present invention provides an assembly fixture for steering column processing, comprising a base plate, a limit assembly, a clamping assembly and a steering column body, wherein the limit assembly is installed on both sides of the top of the base plate, and the limit assembly and the clamping assembly are used in combination to ensure that the steering column body will not be displaced during the assembly process, thereby ensuring the assembly quality. The limit assembly is used to limit the two ends of the steering column body, the clamping assembly is installed above the base plate, and the clamping assembly is used to fix the steering column body. The clamping assembly includes a flexible clamp, which can be moved and arranged on the outside of the steering column body, and the flexible clamp includes a flexible clamping head, and the flexible clamping head can be telescopically moved, and one end of the flexible clamping head is in contact with the surface of the steering column body. The telescopic function of the flexible clamping head enables the fixture to clamp a wider range of steering columns and adapt to steering column bodies of different diameters.

[0007] Preferably, the flexible clamp also includes a telescopic rod, one end of the telescopic rod is fixedly connected to the flexible clamping head, the flexible clamp is provided with a hole for inserting the telescopic rod, the other end of the telescopic rod is slidably arranged in the hole in the flexible clamp, and a piston is also arranged at the other end of the telescopic rod, and the piston on the telescopic rod slides in the hole in the flexible clamp; through the flexible adjustment of the telescopic rod, the flexible clamp can clamp steering columns of different diameters to meet diverse processing requirements.

[0008] Preferably, a cavity is provided on one side inside the flexible clamp, and the flexible clamp also includes two air pipe interfaces, which are respectively provided on the upper and lower sides of the flexible clamp, and the other ends of the air pipe interfaces extend into the flexible clamp, and the air pipe interfaces are used to connect to an external air pipe and pass gas into the cavity in the flexible clamp, and by adjusting the amount and pressure of gas passed into the cavity, precise control of the clamping force can be achieved to meet different processing and assembly requirements.

[0009] Preferably, the holes on the flexible clamp are stepped holes and are evenly distributed on the flexible clamp, and a return spring is provided in the hole on the flexible clamp, and the return spring is sleeved on the outside of the telescopic rod, and one end of the return spring is fixedly connected to the flexible clamping head, and the return spring is used to reset the flexible clamping head.

[0010] Preferably, a plurality of the flexible clamping heads, the return springs and the telescopic rods are distributed on the flexible clamp, and the flexible clamping heads are made of elastic material.

[0011] Preferably, the clamping assembly also includes a mounting plate, a connecting plate and a centering clamp, the mounting plate is fixed to the bottom of the connecting plate, a groove is provided on the connecting plate, one end of the centering clamp is fixedly connected to the flexible clamp, and the centering clamp is movably arranged on the groove through an axis, and a limiting roller is movably arranged on the other end of the centering clamp.

[0012] Preferably, the clamping assembly also includes a second telescopic driving member and a lifting block, the second telescopic driving member is fixed on the mounting plate, and the output end of the mounting plate is fixedly connected to the bottom of the lifting block, and the second telescopic driving member is used to drive the lifting block to vertically reciprocate, a sliding member is connected to the lifting block, two limit blocks are fixed on both sides of the outside of the groove, and a sliding groove for the sliding member to move is formed between the two limit blocks, and the top of the sliding member is connected to a support block that can be lifted up and down, and the support block is in contact with the steering column body.

[0013] Preferably, both sides of the lifting block are arranged as inclined surfaces, and the outer side of the lifting block contacts the outer side of the limiting roller, and when the lifting block moves, the limiting roller moves along the outer side of the lifting block.

[0014] Preferably, a "V"-shaped groove is formed on the support block for supporting the steering column body, and the support block ensures its stability and accuracy during the assembly process.

[0015] Preferably, the limiting assembly includes a first telescopic driving member, a connecting frame and a limiting pressure member, the limiting pressure member is movably arranged in the connecting frame through an axis, and a pressure pad is fixed on one side of the limiting pressure member, and the pressure pad is pressed on the steering column body, and the pressure pad is made of elastic material, the limiting assembly also includes a support plate, and the connecting frame is fixed on the support plate, and a hinge seat is fixed on the support plate, and the first telescopic driving member is movably arranged on the hinge seat, the output end of the first telescopic driving member is movably connected to one end of the limiting pressure member, and the first telescopic driving member drives the limiting pressure member to move; the limiting assembly also includes a support frame, and the support frame is fixed on the bottom plate, and a support platform is also fixed on one group of the support frames, and a "V"-shaped groove is also provided on the support platform, and a plurality of mounting grooves are also provided on the bottom plate, and the limiting pressure member is driven to move by the first telescopic driving member, and the stable limiting of the steering column body is achieved by cooperating with the pressure pad, and the pressure pad is made of elastic material to ensure that the steering column body will not be scratched or damaged during the limiting process.

[0016] Compared with the prior art, the beneficial effects of the present invention are: the assembly fixture for processing the steering column has a reasonable structure and has the following advantages:

[0017] A flexible clamp is provided, and the flexible clamp also includes a flexible clamping head, a return spring and a telescopic rod, and the telescopic rod slides in the flexible clamp. When the flexible clamp moves to make the flexible clamping head contact with the outer surface of the steering column body, the telescopic rod moves in the flexible clamp. At this time, the return spring provides an opposite force. At the same time, the air pipe interface is also connected to the air pipe to pass compressed air into the cavity in the flexible clamp, so that the compressed air moves the piston, so that the telescopic rod drives the flexible clamping head to be tightly pressed against the outer surface of the steering column body, and through multiple The function of the flexible clamping head is to adapt to different shapes and sizes of the steering column body, and the flexible clamping head is made of elastic material to avoid scratches on the surface of the steering column body. In order to make the flexible clamper move synchronously, the second telescopic drive member is started, and the second telescopic drive member moves the lifting block, and the outside of the lifting block is set as an inclined surface, and then the limiting roller moves on the inclined surface of the lifting block, so that the flexible clamper can move synchronously, and the slide can rise, so that the support block contacts the bottom surface of the steering column body, thereby playing a supporting role. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a schematic diagram of the first stereoscopic structure of an assembly fixture for machining a steering column.

[0019] Figure 2 The present invention is a schematic diagram of the second three-dimensional structure of an assembly fixture for machining a steering column.

[0020] Figure 3 The third stereoscopic structure schematic diagram of an assembly fixture for steering column processing is shown.

[0021] Figure 4 The present invention is a schematic diagram of the top view structure of an assembly fixture for processing a steering column.

[0022] Figure 5 The present invention is a schematic diagram of the first stereoscopic structure of an assembly fixture limit component for steering column processing.

[0023] Figure 6 The present invention is a schematic diagram of the second three-dimensional structure of an assembly fixture limit component for machining a steering column.

[0024] Figure 7 The invention discloses a schematic diagram of a three-dimensional structure of an assembly fixture clamping component and a steering column body for processing a steering column.

[0025] Figure 8 The present invention is a schematic diagram of the first stereoscopic structure of an assembly fixture clamping component for machining a steering column.

[0026] Fig. 9 The present invention is a schematic diagram of the second three-dimensional structure of a clamping assembly of an assembly fixture for machining a steering column.

[0027] Fig.10 The present invention is a schematic diagram of the front view structure of a clamping assembly of an assembly fixture for machining a steering column.

[0028] Fig.11 It is an assembly fixture clamping component for steering column processing Fig.10 Enlarged structural diagram at A in the middle.

[0029] Fig.12 The present invention is a schematic diagram of the exploded structure of an assembly fixture clamping component for steering column processing.

[0030] The numbers in the figure are: 1. base plate; 11. mounting groove; 12. limit assembly; 121. support frame; 122. support plate; 123. hinged seat; 124. first telescopic drive member; 125. connecting frame; 126. limit pressure member; 127. pressure pad; 13. clamping assembly; 131. mounting plate; 132. connecting plate; 1321. groove; 133. second telescopic drive member; 134. lifting block; 1341. slide; 1342. support block; 135. centering clamping member; 1351. limit roller; 136. flexible clamp; 1361. trachea interface; 1362. flexible clamping head; 1363. reset spring; 1364. telescopic rod; 14. support platform; 2. steering column body. DETAILED DESCRIPTION

[0031] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Reference Figure 1-Figure 12As shown, the present invention provides: an assembly fixture for steering column processing, including a base plate 1, a limit assembly 12, a clamping assembly 13 and a steering column body 2, wherein the base plate 1 is the foundation and support structure of the entire fixture. It provides a stable platform, so that other components of the fixture can be installed thereon and maintain a relatively stable position. The limit assembly 12 is installed on both sides of the top of the base plate 1, and the limit assembly 12 is used to limit the two ends of the steering column body 2. The limit assembly 12 ensures that the steering column body 2 will not be displaced during the assembly process, thereby ensuring the assembly quality. The clamping assembly 13 is installed above the base plate 1, and the clamping assembly 13 is used to fix the steering column body 2. The clamping assembly 13 includes a flexible clamp 136, and the flexible clamp 136 can be moved and arranged on the outside of the steering column body 2 to meet the clamping requirements of different positions. The flexible clamp 136 includes a flexible clamp head 1362, and the flexible clamp head 1362 can be telescopically moved, one end of the flexible clamp head 1362 contacts the surface of the steering column body 2, and the flexible clamp head 1362 is a key part of the flexible clamp 136, which can be telescopically moved to adapt to steering column bodies 2 of different diameters. This telescopic function enables the clamp to clamp a wider range of steering columns.

[0033] In this embodiment, the telescopic function of the flexible clamping head 1362 enables the clamp to clamp a wider range of steering columns and adapt to steering column bodies 2 of different diameters, making the clamp more adaptable. The coordinated use of the limit assembly 12 and the clamping assembly 13 ensures that the steering column will not be displaced during assembly, thereby ensuring the assembly quality and making the clamp more stable. The design of the flexible clamp 136 and the flexible clamping head 1362 makes the operation of the clamp easier and improves work efficiency, making the clamp have important application value in the assembly process of the steering column body 2.

[0034] The flexible clamp 136 also includes a telescopic rod 1364, one end of which is fixedly connected to the flexible clamping head 1362, and the flexible clamping head 1362 is directly in contact with the steering column body 2 and is responsible for clamping. The flexible clamp 136 is provided with a hole for the telescopic rod 1364 to be inserted. The telescopic rod 1364 is an important component of the flexible clamp 136, which is responsible for adjusting the distance between the flexible clamping head 1362 and the steering column body 2, so as to achieve the clamping of steering columns of different diameters. The other end of the telescopic rod 1364 is slidably arranged in the hole in the flexible clamp 136, and the other end of the telescopic rod 1364 is also provided with a piston, and the piston on the telescopic rod 1364 slides in the hole in the flexible clamp 136, and the piston slides in the hole in the flexible clamp 136. This design allows the telescopic rod 1364 to extend and retract more smoothly, and also enhances the stability of clamping. When gas is introduced into the flexible clamp 136, the compressed gas moves the piston, thereby causing the telescopic rod 1364 to drive the flexible clamping head 1362 to clamp the steering column body 2.

[0035] A cavity is provided on one side inside the flexible clamp 136. The flexible clamp 136 also includes two air pipe interfaces 1361, which are respectively provided on the upper and lower sides of the flexible clamp 136, and the other end of the air pipe interface 1361 extends into the flexible clamp 136. The air pipe interface 1361 is used to connect an external air pipe and pass gas into the cavity in the flexible clamp 136. By controlling the amount and pressure of gas passed into the cavity, precise adjustment of the clamping force can be achieved. A larger air pressure may cause the flexible clamping head 1362 to fit the steering column more closely, providing a greater clamping force. On the contrary, reducing the air pressure may loosen the flexible clamping head 1362, reducing the clamping force. The clamp is easy to operate, and the clamping force can be adjusted by controlling the air pressure through an external air pipe, thereby improving work efficiency.

[0036] The holes on the flexible clamp 136 are stepped holes and are evenly distributed on the flexible clamp 136. A return spring 1363 is arranged in the hole on the flexible clamp 136. The return spring 1363 is sleeved on the outside of the telescopic rod 1364. One end of the return spring 1363 is fixedly connected to the flexible clamp head 1362. The return spring 1363 is used to reset the flexible clamp head 1362. When the flexible clamp head 1362 changes position, the return spring 1363 will be in a compressed state. Once the external force disappears, the return spring 1363 will use its elastic force to push the telescopic rod 1364 back to the initial position, thereby driving the flexible clamp head 1362 to reset.

[0037] There are several flexible clamping heads 1362, return springs 1363 and telescopic rods 1364 distributed on the flexible clamp 136, and the flexible clamping heads 1362 are made of elastic materials, such as rubber, silicone or highly elastic plastic. The selection of elastic materials ensures that the clamping heads have certain elasticity and adaptability when contacting the steering column, and can closely fit steering columns of different shapes and sizes, while avoiding scratches on the surface of the steering column body 2.

[0038] In this embodiment, when the flexible clamp 136 moves so that the flexible clamp head 1362 contacts the outer surface of the steering column body 2, the telescopic rod 1364 moves in the flexible clamp 136. At this time, the return spring 1363 provides an opposite force. At the same time, the air pipe interface 1361 is also connected to the air pipe to pass compressed air into the cavity in the flexible clamp 136. The compressed air moves the piston, so that the telescopic rod 1364 drives the flexible clamp head 1362 to be tightly pressed against the outer surface of the steering column body 2. Through the action of multiple flexible clamp heads 1362, it can adapt to different shapes and sizes of the steering column body 2, and the flexible clamp head 1362 is made of elastic material to avoid scratches on the surface of the steering column body 2.

[0039] The clamping assembly 13 also includes a mounting plate 131, a connecting plate 132 and a centering clamp 135. The mounting plate 131 is fixed to the bottom of the connecting plate 132. The mounting plate 131 serves as the basic support structure of the clamping assembly 13 and provides a stable installation platform. A groove 1321 is provided on the connecting plate 132. One end of the centering clamp 135 is fixedly connected to the flexible clamp 136. The centering clamp 135 is movably arranged on the groove 1321 through an axis, so that the flexible clamp 136 can move in a specific direction, thereby adapting to steering column bodies 2 of different sizes and shapes. A limit roller 1351 is movably arranged on the other end of the centering clamp 135.

[0040] In this embodiment, the clamping assembly 13 can adapt to steering column bodies 2 of different sizes and shapes through the coordinated work of the flexible clamp 136 and the centering clamp 135 .

[0041] The clamping assembly 13 also includes a second telescopic driving member 133 and a lifting block 134. The second telescopic driving member 133 is fixed on the mounting plate 131, and the output end of the mounting plate 131 is fixedly connected to the bottom of the lifting block 134. The second telescopic driving member 133 is used to drive the lifting block 134 to reciprocate vertically. The vertical reciprocating motion is achieved by the driving of the second telescopic driving member 133, thereby adjusting the contact state with the steering column body 2. The lifting block 134 is connected with a slide 1341, and two limit blocks are fixed on both sides of the outside of the groove 1321. A slide groove for the slide 1341 to move is formed between the two limit blocks, so as to ensure the stability and accuracy of the slide 1341 during the vertical lifting process. The top of the slide 1341 is connected to a support block 1342 that can be lifted up and down, and the support block 1342 is in contact with the steering column body 2. Driven by the second telescopic drive member 133, the lifting block 134, the slide 1341 and the support block 1342 can realize vertical reciprocating motion, and the support block 1342 is in contact with the steering column body 2 to play a supporting role.

[0042] The two sides of the lifting block 134 are arranged as inclined surfaces, and the outer side of the lifting block 134 contacts with the outer side of the limiting roller 1351, and when the lifting block 134 moves, the limiting roller 1351 moves along the outer side of the lifting block 134. When the second telescopic driving member 133 causes the lifting block 134 to rise and fall, since the two sides of the lifting block 134 are arranged as inclined surfaces, the limiting roller 1351 can move along the outside of the lifting block 134, thereby enabling the flexible clamp 136 to move. A "V"-shaped groove is provided on the support block 1342 for supporting the steering column body 2.

[0043] In this embodiment, by starting the second telescopic driving member 133, the second telescopic driving member 133 moves the lifting block 134, and the outside of the lifting block 134 is set to an inclined surface, so that the limiting roller 1351 moves on the inclined surface of the lifting block 134, so that the flexible clamp 136 can move synchronously, and the slide 1341 can rise, so that the support block 1342 contacts the bottom surface of the steering column body 2, thereby playing a role in supporting the steering column body 2.

[0044] The limiting assembly 12 includes a first telescopic driving member 124, a connecting frame 125 and a limiting pressure member 126. The limiting pressure member 126 is movably arranged in the connecting frame 125 through an axis, and a pressure pad 127 is fixed on one side of the limiting pressure member 126, which is made of elastic material, such as rubber, silicone, etc. It ensures that the steering column body 2 will not be scratched or damaged during the limiting process, and at the same time provides a stable limiting force. The pressure pad 127 is pressed on the steering column body 2, and the pressure pad 127 is made of elastic material. The limiting assembly 12 also includes a support plate 122, and the connecting frame 125 is fixed on the support plate 122, and a hinge seat 123 is fixed on the support plate 122, and a first telescopic driving member 124 is movably arranged on the hinge seat 123, providing a hinge point for the first telescopic driving member 124, so that it can rotate and retract freely. The output end of the first telescopic driving member 124 is movably connected to one end of the limiting pressure member 126, and the first telescopic driving member 124 drives the limiting pressure member 126 to move; the limiting pressure member 126 is driven to move by the telescopic action to limit the steering column body 2. The connecting frame 125 provides a movable space for the limiting pressure member 126 to ensure that it can move smoothly. The limiting assembly 12 also includes a support frame 121, and the support frame 121 is fixed on the base plate 1, and a support platform 14 is also fixed on one group of the support frames 121, and the support platform 14 is also provided with a "V"-shaped groove for auxiliary support of the steering column. A plurality of mounting grooves 11 are also provided on the base plate 1.

[0045] In this embodiment, by starting the first telescopic driving member 124, the first telescopic driving member 124 moves one end of the limiting pressure member 126, and the limiting pressure member 126 presses the pressure pad 127 onto the steering column body 2 for limiting and positioning, and the pressure pad 127 is supported by elastic material to avoid damage to the steering column body 2.

[0046] Working principle: When in use, the bottom plate 1 is placed on the transfer equipment workbench for fixing, and then the steering column body 2 is placed on the fixture, and the support platform 14 is used to support one end of the steering column body 2 to maintain the balance of the steering column body 2. Subsequently, by starting the first telescopic driving member 124, the first telescopic driving member 124 moves one end of the limiting pressure member 126, and the limiting pressure member 126 presses the pressure pad 127 onto the steering column body 2 for limiting and positioning, and the pressure pad 127 is supported by elastic material to avoid damage to the steering column body 2. Subsequently, by starting the second telescopic driving member 133, the second telescopic driving member 133 moves the lifting block 134, and the outer part of the lifting block 134 is set to an inclined surface, and then the limiting roller 1351 moves on the inclined surface of the lifting block 134, so that the flexible clamp 136 can move synchronously, and the slide 1341 can rise, so that the support block 1342 contacts the bottom surface of the steering column body 2, thereby playing a role in supporting the steering column body 2. At this time, when the flexible clamp 136 moves to make the flexible clamp head 1362 contact with the outer surface of the steering column body 2, the telescopic rod 1364 moves in the flexible clamp 136, and the return spring 1363 provides an opposite force. At the same time, the air pipe interface 1361 is also connected to the air pipe to pass compressed air into the cavity in the flexible clamp 136, so that the compressed air moves the piston, so that the telescopic rod 1364 drives the flexible clamp head 1362 to press tightly against the outer surface of the steering column body 2. Through the action of multiple flexible clamp heads 1362, it can adapt to different shapes and sizes of the steering column body 2, and the flexible clamp head 1362 is made of elastic material to avoid scratches on the surface of the steering column body 2. Through the coordinated use of the limit assembly 12 and the clamp assembly 13, it is ensured that the steering column body 2 will not be displaced during the assembly process, and the assembly quality is guaranteed. Its strong adaptability, good stability and easy operation make the clamp have important application value in the processing and assembly process of the steering column.

[0047] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An assembly fixture for steering column processing, characterized in that: The invention comprises a base plate (1), a limit assembly (12), a clamping assembly (13) and a steering column body (2), wherein the limit assembly (12) is mounted on both sides of the top of the base plate (1), and the limit assembly (12) is used to limit the two ends of the steering column body (2); the clamping assembly (13) is mounted above the base plate (1), and the clamping assembly (13) is used to fix the steering column body (2); the clamping assembly (13) comprises a flexible clamp (136), and the flexible clamp (136) is movable and arranged on the steering column body (2 ), the flexible clamp (136) comprising a flexible clamp head (1362), and the flexible clamp head (1362) can be telescopically moved, and one end of the flexible clamp head (1362) is in contact with the surface of the steering column body (2); the flexible clamp (136) also comprises a telescopic rod (1364), one end of the telescopic rod (1364) is fixedly connected to the flexible clamp head (1362), the flexible clamp (136) is provided with a hole for inserting the telescopic rod (1364), and the other end of the telescopic rod (1364) is slidably arranged The flexible clamp (136) is provided with a piston at the other end of the telescopic rod (1364), and the piston on the telescopic rod (1364) slides in the hole in the flexible clamp (136); a cavity is provided on one side inside the flexible clamp (136), and the flexible clamp (136) further includes two air pipe interfaces (1361), which are respectively provided on the upper and lower sides of the flexible clamp (136), and the other end of the air pipe interface (1361) extends into the flexible clamp (136), and the air pipe The interface (1361) is used to connect to an external air pipe and pass gas into the cavity in the flexible clamp (136); the holes on the flexible clamp (136) are stepped holes and are evenly distributed on the flexible clamp (136), and a return spring (1363) is provided in the hole on the flexible clamp (136), and the return spring (1363) is sleeved on the outside of the telescopic rod (1364), and one end of the return spring (1363) is fixedly connected to the flexible clamp head (1362), and the return spring (1363) is used to reset the flexible clamp head (1362); The position limiting assembly (12) comprises a first telescopic driving member (124), a connecting frame (125) and a position limiting pressing member (126); the position limiting pressing member (126) is movably arranged in the connecting frame (125) via an axis, a pressure pad (127) is fixed to one side of the position limiting pressing member (126), the pressure pad (127) is pressed on the steering column body (2), and the pressure pad (127) is made of elastic material; the position limiting assembly (12) further comprises a support plate (122), the connecting frame (125) is fixed on the support plate (122), and a hinge seat (123) is fixed on the support plate (122). , and a first telescopic driving member (124) is movably provided on the hinge seat (123), the output end of the first telescopic driving member (124) is movably connected to one end of the limit pressure member (126), and the first telescopic driving member (124) drives the limit pressure member (126) to move; the limit assembly (12) also includes a support frame (121), and the support frame (121) is fixed on the bottom plate (1), and a support platform (14) is also fixed on one group of the support frames (121), and the support platform (14) is also provided with a "V"-shaped groove, and the bottom plate (1) is also provided with a plurality of mounting grooves (11).

2. The assembly fixture for steering column processing according to claim 1, characterized in that: A plurality of the flexible clamping heads (1362), the return springs (1363) and the telescopic rods (1364) are distributed on the flexible clamp (136), and the flexible clamping heads (1362) are made of elastic material.

3. The assembly fixture for steering column processing according to claim 2, characterized in that: The clamping assembly (13) further comprises a mounting plate (131), a connecting plate (132) and a centering clamping member (135); the mounting plate (131) is fixed to the bottom of the connecting plate (132); a groove (1321) is provided on the connecting plate (132); one end of the centering clamping member (135) is fixedly connected to the flexible clamp (136); the centering clamping member (135) is movably arranged on the groove (1321) via an axis; and a limiting roller (1351) is movably arranged on the other end of the centering clamping member (135).

4. The assembly fixture for steering column processing according to claim 3, characterized in that: The clamping assembly (13) further comprises a second telescopic driving member (133) and a lifting block (134); the second telescopic driving member (133) is fixed on the mounting plate (131), and the output end of the mounting plate (131) is fixedly connected to the bottom of the lifting block (134); the second telescopic driving member (133) is used to drive the lifting block (134) to vertically reciprocate; a sliding member (1341) is connected to the lifting block (134); two limit blocks are fixed on both sides of the outside of the groove (1321); a sliding groove for the sliding member (1341) to move is formed between the two limit blocks; a support block (1342) that can be lifted up and down is connected to the top of the sliding member (1341), and the support block (1342) is in contact with the steering column body (2).

5. The assembly fixture for steering column processing according to claim 4, characterized in that: Both sides of the lifting block (134) are arranged to form inclined surfaces, and the outer side of the lifting block (134) and the outer side of the limiting roller (1351) are in contact with each other, and when the lifting block (134) moves, the limiting roller (1351) moves along the outer side of the lifting block (134).

6. The assembly fixture for steering column machining according to claim 5, characterized in that: The support block (1342) is provided with a V-shaped groove for supporting the steering column body (2).

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