Machining clamp of automatic adjusting arm

Abstract

The utility model relates to a machining fixture of an automatic adjusting arm, which comprises a base, a positioning block, a pressing assembly, a pressing force adjusting pin and a positioning rod, the adjusting arm is firmly fixed on the base under the action of the positioning block, the pressing assembly and the positioning rod, and the planes are fixed. The adjusting arm can be rapidly and simultaneously positioned in the four directions, relative slippage or displacement between the adjusting arm and the base is prevented, meanwhile, the pressing force adjusting pin can drive the pressing assembly to further press the adjusting arm when a machine tool works, the pressing force is further improved, the anti-slippage and anti-displacement effects are better, and the service life of the machine tool is prolonged. In addition, machining procedures do not need to be added, it is guaranteed that the center distance between the machined worm shaft and the machined worm gear is optimal, the quality of the adjusting arm is improved, and the adjusting arm can eliminate gaps caused by abrasion of a brake pad in time during braking.

Description

[Technical field]

[0002] The utility model relates to the field of fixtures, in particular to a machining fixture for automatically adjusting arms. [Background technology]

[0004] The brake clearance automatic adjustment arm is also called the brake clearance automatic adjustment arm, or simply the automatic adjustment arm. When a car is driving on the road, frequent braking will cause the brake shoe and brake drum to wear continuously, causing the gap between them to begin to increase; eventually, the brake air chamber push rod stroke becomes longer, the thrust decreases, causing brake lag and reduced braking force. The automatic clearance automatic adjustment arm is a device used to adjust and control the gap between the two. It can automatically and timely adjust the gap increased by wear, so that the brake clearance is always kept within the design range.

[0005] The adjustment of the clearance of the automatic adjustment arm is closely related to whether its own structure is reasonable. The center distance between the worm shaft of the adjustment arm and the worm wheel plays a key role. If the center distance between the worm shaft and the worm wheel is too large, it may cause the brake to fail suddenly. If it is too small, the adjustment arm may suddenly get stuck when adjusting the brake clearance, and the clearance caused by the wear of the brake pads cannot be eliminated.

[0006] To this end, the utility model with publication number CN217072153U discloses a fixture for an adjustment arm housing, which belongs to the field of fixture technology. It solves the problems of small processing range and insufficient applicability. It includes a base plate and a plurality of clamping units arranged on the base plate, the clamping unit includes a base fixed on the base plate and for the adjustment arm housing to abut against, the clamping unit also includes two lever-type hydraulic cylinders one fixed on the base plate and located on both sides of the bottom plate, the piston rods of the two lever-type hydraulic cylinders one are arranged upward and the pressure blocks of the two lever-type hydraulic cylinders one are arranged oppositely, and the upper sides of the ends of the pressure blocks of the two lever-type hydraulic cylinders one are provided with a yield surface, and the two pressure blocks can be swung into the two ends of the large worm hole of the adjustment arm housing or swung out from the two ends of the large worm hole of the adjustment arm housing through their respective yield surfaces when the piston rods of the lever-type hydraulic cylinders one are extended or retracted. It has the advantages of large processing range and wide applicability.

[0007] The above patent has the following problems: the fixture is swung into the two ends of the large worm hole of the adjusting arm housing through the end of the pressure block of the two lever-type hydraulic cylinders and pressed down on the inner wall of the two ends of the large worm hole, and the clamping part of the side of the pressure block of the lever-type hydraulic cylinder 2 is pressed down on the convex block on the side of the adjusting arm housing to fix it. The lower end surface of the pressure block is a plane and the large worm hole is a curved surface. The contact between the plane and the curved surface makes it easy for the adjusting arm housing and the fixture to slide relative to each other when the machine tool drives the fixture to rotate, that is, to move forward, backward, left and right. Although the cooperation between the clamping part and the convex block can limit one reverse movement, the movement in the other three directions cannot be limited. The fixation is not firm, and the adjusting arm housing is prone to slippage and displacement, resulting in the inconsistency between the worm shaft and the worm wheel center distance of each adjusting arm housing, thereby affecting the quality of the adjusting arm and the braking effect; at the same time, it is necessary to process the outer side of the adjusting arm housing to form a convex block, which not only increases the process, but also has a certain impact on the adjustment and control of the adjusting arm housing during braking.

[0008] Therefore existing technology can not meet our needs. [Contents of the utility model]

[0010] In order to solve the above problems, the utility model provides a processing fixture for an automatic adjustment arm with high processing quality.

[0011] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0012] A processing fixture for an automatic adjustment arm, comprising:

[0013] Base: used to connect with the machine tool;

[0014] Positioning block: fixed on the base, used for positioning the adjustment arm;

[0015] A clamping assembly: movably arranged on the base, used for clamping and fixing the adjusting arm;

[0016] A clamping force adjusting pin: movably arranged in the base, used to work in conjunction with the clamping assembly to drive the clamping assembly to further clamp the adjusting arm when the machine tool is working;

[0017] Positioning rod: used for being inserted into the adjusting arm and connected with the positioning block to fix the adjusting arm.

[0018] As a preferred embodiment, it is further defined as: the adjusting arm is provided with a worm hole and a worm wheel hole, the positioning rod is detachably connected to the positioning block, and when fixed, the positioning rod passes through the worm hole and is detachably connected to the positioning block.

[0019] As a preferred embodiment, it is further defined as: the adjustment arm is further provided with a slot, the positioning block is provided with an inserting block fixedly inserted in the slot, and the inserting block is provided with a slot for the positioning rod to be inserted into.

[0020] As a preferred embodiment, it is further defined as: a clamping block is also provided on the base, and the positioning block is fixed to the base through the clamping block.

[0021] As a preferred embodiment, it is further defined as: the clamping assembly includes a clamping block that presses against the end surface of the adjusting arm when fixed and a connecting rod rotatably arranged on the base, the clamping block is rotatably arranged at one end of the connecting rod, and the clamping block is rotated when fixed so that the clamping block presses against the end surface of the adjusting arm; when the machine tool is working, the clamping force adjusting pin pushes the other end of the connecting rod so that the connecting rod drives the clamping block to swing toward the adjusting arm, thereby enhancing the clamping force against the end surface of the adjusting arm.

[0022] As a preferred embodiment, it is further defined as: an adjusting bolt and an adjusting nut for adjusting the distance between the adjusting bolt and the clamping force adjusting pin are also provided on the connecting rod, and the adjusting bolt is aligned with the clamping force adjusting pin so that when the machine tool is working, the clamping force adjusting pin drives the connecting rod to swing by pushing the adjusting bolt.

[0023] As a preferred embodiment, it is further defined as: the clamping assembly also includes a connecting pin, and when installed, the connecting pin passes through the connecting rod so that the connecting rod is rotatably arranged on the base through the connecting pin.

[0024] As a preferred embodiment, it is further defined as: a seat body is provided on the connecting pin, a first positioning hole is opened on the seat body, a second positioning hole aligned with the first positioning hole is provided on the base, and plug-ins are provided in the first positioning hole and the second positioning hole to limit the rotation of the connecting pin on the base.

[0025] As a preferred embodiment, it is further defined as: the clamping assembly further includes a mounting block, and the clamping block is rotatably disposed on the base through the mounting block.

[0026] As a preferred embodiment, it is further defined as: a first mounting through hole is provided on the mounting block, and during installation, the connecting pin passes through the first mounting through hole so that the mounting block is fixed on the connecting rod.

[0027] The beneficial effects of the utility model are as follows: the adjusting arm of the utility model is firmly fixed on the base through the fixing of the positioning block, the clamping assembly and the positioning rod. The fixation between the planes can quickly position the adjusting arm in four directions at the same time, preventing relative slippage or displacement between the adjusting arm and the base. At the same time, the clamping force adjusting pin can drive the clamping assembly to further clamp the adjusting arm when the machine tool is working, thereby further improving the clamping force, and achieving better anti-slip and anti-displacement effects. Without adding processing steps, it is ensured that the center distance between the processed worm shaft and the worm wheel is optimal, thereby improving the quality of the adjusting arm, so that the adjusting arm can promptly eliminate the gap caused by brake pad wear when braking.

Brief Description of the Drawings

[0029] Figure 1 It is one of the structural schematic diagrams of the utility model;

[0030] Figure 2 This is the second structural diagram of the utility model;

[0031] Figure 3 It is an exploded view of the utility model;

[0032] Figure 4 It is a transverse cross-sectional view of the utility model;

[0033] Figure 5 It is a partial cross-sectional view of the utility model;

[0034] Figure 6 It is a structural schematic diagram of the utility model with the adjustment arm removed;

[0035] Figure 7 It is one of the structural diagrams of the adjusting arm;

[0036] Figure 8 This is the second structural diagram of the adjusting arm;

[0037] Fig. 9 It is one of the structural diagrams of the base;

[0038] Fig.10 This is the second structural diagram of the base;

[0039] Fig.11 It is a structural diagram of the positioning block;

[0040] Fig.12 It is a structural schematic diagram of the positioning rod;

[0041] Fig.13 is a schematic diagram of the structure of the compression block;

[0042] Fig.14 It is a schematic diagram of the structure of the installation block;

[0043] Fig.15 It is a structural diagram of the connecting rod. [Specific implementation method]

[0045] The present invention is further described in detail below with reference to the accompanying drawings and specific implementations:

[0046] As attached Figure 1 To Attachment Fig.15 As shown, a processing fixture for an automatic adjustment arm comprises:

[0047] Base 1: used to connect with the machine tool;

[0048] Positioning block 2: fixed on the base 1, used for positioning the adjustment arm 9;

[0049] A clamping assembly 100 is movably disposed on the base 1 and is used to clamp and fix the adjusting arm 9;

[0050] The clamping force adjusting pin 3 is movably arranged in the base 1, and is used to work in conjunction with the clamping assembly 100, and drive the clamping assembly 100 to further clamp the adjusting arm 9 when the machine tool is working;

[0051] Positioning rod 4 : used to be inserted into the adjusting arm 9 and connected to the positioning block 2 to fix the adjusting arm 9 .

[0052] The adjusting arm 9 is firmly fixed on the base 1 by the positioning block 2, the clamping assembly 100 and the positioning rod 4. The fixation between the planes can quickly position the adjusting arm 9 in four directions at the same time to prevent relative slippage or displacement between the adjusting arm 9 and the base 1. At the same time, the clamping force adjusting pin 3 can drive the clamping assembly 100 to further clamp the adjusting arm 9 when the machine tool is working, thereby further improving the clamping force, and achieving better anti-slip and anti-displacement effects. There is no need to increase the processing steps, thereby ensuring that the center distance between the processed worm shaft and the worm wheel is optimal, thereby improving the quality of the adjusting arm, and enabling the adjusting arm 9 to eliminate the gap caused by brake pad wear in time during braking.

[0053] As attached Figure 1 To Attachment Figure 8 and attached Fig.12 As shown, in this embodiment, the adjusting arm 9 is provided with a worm hole 91 and a worm wheel hole 92, and the positioning rod 4 is detachably connected to the positioning block 2. When fixed, the positioning rod 4 passes through the worm hole 91 and is detachably connected to the positioning block 2. The positioning rod 4 can not only quickly disassemble and assemble the adjusting arm 9, but also accurately locate the worm hole 91 of the adjusting arm 9 after installation, thereby improving the positioning accuracy, so that the inner hole turning tool can finely turn the worm wheel hole 92 of the adjusting arm 9.

[0054] Furthermore, the worm gear hole 92 is a hole to be processed, and the adjusting arm 9 is firmly fixed on the base 1 by the positioning block 2, the clamping assembly 100 and the positioning rod 4. The fixation between the planes can quickly position the adjusting arm 9 in four directions at the same time, preventing the relative slippage or sliding displacement between the adjusting arm 9 and the base 1, and ensuring that each worm gear hole 92 of the adjusting arm 9 to be processed is accurately positioned on the base 1, so that the inner hole turning tool can fine-tune the worm gear hole 92 of the adjusting arm 9, thereby ensuring that the center distance between the processed worm hole 91 and the worm gear hole 92 is optimal, thereby improving the quality of the adjusting arm, so that the adjusting arm 9 can timely eliminate the gap caused by the wear of the brake pad when braking.

[0055] As attached Figure 1 To Attachment Figure 8 and attached Fig.11 To Attachment Fig.12 As shown, in this embodiment, the adjustment arm 9 is also provided with a slot 93, and the positioning block 2 is provided with an inserting block 21 fixedly inserted in the slot 93, and the inserting block 21 is provided with a slot 211 for the positioning rod 4 to be inserted. The positioning rod 4 is detachably connected to the positioning block 2 by engaging with the slot 211. The positioning rod 4 can not only quickly disassemble and assemble the adjustment arm 9, but also accurately position the worm hole 91 of the adjustment arm 9 after installation. The cooperation between the positioning rod 4 and the slot 211, that is, the coaxial fixation, improves the positioning accuracy between the adjustment arm 9 and the base 1. In addition, the positioning effect of the slot 93 and the inserting block 21, the fixation between the planes, can quickly position the adjustment arm 9 in four directions at the same time, prevent the relative slippage or sliding displacement between the adjustment arm 9 and the base 1, and ensure that the worm wheel hole 92 of each adjustment arm 9 is accurately positioned on the base 1, so that the inner hole turning tool can fine turn the worm wheel hole 92 of the adjustment arm 9.

[0056] Furthermore, a positioning protrusion 41 is provided on the positioning rod 4, which not only allows the insertion position to be known in time when the positioning rod 4 is inserted, but also prevents the positioning rod 4 from moving when the base 1 rotates, that is, the direction in which the positioning rod 4 is acted upon by the centripetal force is toward the insertion block 21.

[0057] As attached Figure 1 To Attachment Figure 8 and attached Fig.11 To Attachment Fig.12As shown, in this embodiment, a clamping block 20 is further provided on the base 1, and the positioning block 2 is fixed to the base 1 through the clamping block 20. Furthermore, the clamping block 20 and the positioning block 2 are in an interference fit manner, so that the positioning block 2 is firmly mounted on the base 1, which facilitates timely replacement of the positioning block 2 to adjust the processing of the adjustment arm 9.

[0058] As attached Figure 1 To Attachment Figure 6 and attached Fig.13 To Attachment Fig.15 As shown, in this embodiment, the clamping assembly 100 includes a clamping block 5 that presses against the end surface of the adjusting arm 9 when fixed and a connecting rod 6 rotatably arranged on the base 1. The clamping block 5 is rotatably arranged at one end of the connecting rod 6. When fixed, the clamping block 5 is rotated so that the clamping block 5 presses against the end surface of the adjusting arm 9; when the machine tool is working, the clamping force adjusting pin 3 pushes the other end of the connecting rod 6 so that the connecting rod 6 drives the clamping block 5 to swing toward the adjusting arm 9, thereby enhancing the clamping force against the end surface of the adjusting arm 9. Furthermore, a movable groove 10 is provided in the base 1 for the clamping force adjusting pin 3 to move. When the machine tool is working, the machine tool drives the base 1 to rotate, and the clamping force adjusting pin 3 movably arranged in the movable groove 10 of the base 1 is subjected to the centripetal force during high-speed rotation, pushing the other end of the connecting rod 6 so that the connecting rod 6 drives the clamping block 5 to swing toward the adjusting arm 9, so that the clamping block 5 is further pressed against the end surface of the adjusting arm 9, thereby enhancing the clamping force against the end surface of the adjusting arm 9, that is, the clamping force adjusting pin 3 converts the centrifugal force into the clamping force, so that the fixing of the adjusting arm 9 is more stable, and the anti-slip and anti-displacement effects are better, the structure is simple, and the design is ingenious.

[0059] As attached Figure 1 To Attachment Figure 6 and attached Fig.13 To Attachment Fig.15 As shown, in this embodiment, the connecting rod 6 is further provided with an adjusting bolt 61 and an adjusting nut 62 for adjusting the distance between the adjusting bolt 61 and the pressing force adjusting pin 3. The adjusting bolt 61 is aligned with the pressing force adjusting pin 3 so that when the machine tool is working, the pressing force adjusting pin 3 drives the connecting rod 6 to swing by pushing the adjusting bolt 61. The cooperation between the adjusting bolt 61 and the adjusting nut 62 can not only be quickly fixed on the connecting rod 6, but also adjust the distance between the adjusting bolt 61 and the pressing force adjusting pin 3, thereby adjusting the swing angle of the connecting rod 6, and then adjusting the size of the pressing force further against the end surface of the adjusting arm 9, with a simple structure and ingenious design.

[0060] As attached Figure 1 To Attachment Figure 6 , Attachment Fig. 9 To Attachment Fig.10 and attached Fig.13 To Attachment Fig.15 As shown, in this embodiment, the clamping assembly 100 further includes a connecting pin 7, which passes through the connecting rod 6 during installation so that the connecting rod 6 is rotatably arranged on the base 1 through the connecting pin 7. The connecting pin 7 not only serves to fix the connecting rod 6 on the base 1, but also enables the connecting rod 6 to be rotatably arranged on the base 1, so that when the clamping force adjusting pin 3 is working, the clamping force adjusting pin 3 pushes the other end of the connecting rod 6 so that the connecting rod 6 drives the clamping block 5 to swing toward the adjusting arm 9, thereby enhancing the clamping force against the end surface of the adjusting arm 9.

[0061] As attached Figure 1 To Attachment Figure 6 , Attachment Fig. 9 To Attachment Fig.10 and attached Fig.13 To Attachment Fig.15 As shown, in this embodiment, a seat body 71 is provided on the connecting pin 7, a first positioning hole 711 is provided on the seat body 71, a second positioning hole 11 aligned with the first positioning hole 711 is provided on the base 1, and plug-ins are provided in the first positioning hole 711 and the second positioning hole 11 to limit the rotation of the connecting pin 7 on the base 1. This prevents the connecting pin 7 from being driven to rotate when the machine tool is working, and prevents the rotation of the connecting pin 7 and the swing of the connecting rod 6 from being offset, and ensures that the tightening force adjustment pin 3 converts the centrifugal force into the clamping force, thereby enhancing the clamping force against the end face of the adjusting arm 9, making the fixing of the adjusting arm 9 more stable, and having better anti-slip and anti-shifting effects, with a simple structure and ingenious design.

[0062] As attached Figure 1 To Attachment Figure 6 , Attachment Fig. 9 To Attachment Fig.10 and attached Fig.13 To Attachment Fig.15As shown, in this embodiment, the clamping assembly 100 further includes a mounting block 8, and the clamping block 5 is rotatably arranged on the base 1 through the mounting block 8. The mounting block 8 is provided with a first mounting through hole 81, and the connecting pin 7 passes through the first mounting through hole 81 during installation so that the mounting block 8 is fixed on the connecting rod 6. The mounting block 8 is installed on the base 1 through the connecting pin 7, so that the clamping block 5 can be rotated, so that the clamping block 5 can be rotated to abut against the end surface of the adjusting arm 9 after the adjusting arm 9 is installed on the positioning block 2, and the adjusting arm 9 can be removed by rotating the clamping block 5 after the processing of the worm gear hole 92 is completed, so that the adjusting arm 9 can be removed and replaced with another adjusting arm 9 to be processed. At the same time, under the action of the centrifugal force of the tightening force adjusting pin 3 being converted into a clamping force, not only the clamping force against the end surface of the adjusting arm 9 is enhanced, but also the clamping block 5 can be prevented from being removed from the end surface of the adjusting arm 9 when rotating.

[0063] Furthermore, the base 1 is provided with a mounting groove 17 for the connecting rod 6 to be inserted into and swing therein, and a socket 18 communicated with the mounting groove 17 and used for the connecting pin 7 to be inserted therein. The connecting rod 6 is movably arranged in the mounting groove 17, and the second positioning hole 11 is arranged on one side of the socket 18; the connecting rod 6 is provided with a mounting hole 63 for one end of the mounting block 8 to be inserted therein, and a second mounting through hole 64 communicated with the mounting hole 63 and for the connecting pin 7 to pass through during installation, so as to facilitate installation.

[0064] Furthermore, the base 1 is also provided with a balancing block 13, the base 1 is provided with a slide slot 14, the balancing block 13 is provided with a slider 15 and a locking bolt 16 for locking the slider 15, the balancing block 13 can move back and forth along the length direction of the tightening force adjustment pin 3 on the base 1 to adjust the rotation balance of the base 1 when the machine tool is working, and prevent the base 1 from shaking and causing the machining accuracy of the worm gear hole 92 to decrease. The locking bolt 16 can lock the balancing block 13 after it is adjusted to a suitable position to prevent the balancing block 13 from moving.

[0065] During installation, first fix the base 1 on the output shaft of the machine tool. Figure 6 As shown, at this time, the clamping block 5 has been rotated to be perpendicular to the axial direction of the tightening force adjustment pin 3, and the installation space 200 for the adjustment arm 9 to be inserted is exposed on the base 1; secondly, the adjustment arm 9 is installed on the positioning block 2 so that the insert block 21 is inserted into the slot 93; then the positioning rod 4 is inserted into the worm hole 91 so that the positioning rod 4 is inserted into the slot 211; finally, the clamping block 5 is rotated so that the clamping block 5 is against the upper end surface of the adjustment arm 9. As shown in the attached figure Figure 1As shown, at this time, the adjusting arm 9 has been clamped, and the machine tool can be turned on so that the inner hole turning tool can finish turning the worm gear hole 92 of the adjusting arm 9; after the processing is completed, the clamping block 5 is rotated to make it perpendicular to the axial direction of the tightening force adjustment pin 3, the processed adjusting arm 9 is taken out, and then the next adjusting arm 9 to be processed is put in, and the next processing cycle is started.

Claims

1. A processing fixture for an automatic adjustment arm, characterized in that: include: Base (1): used for connection with a machine tool; Positioning block (2): fixed on the base (1) and used for positioning the adjustment arm (9); A clamping assembly (100): movably disposed on the base (1) and used for clamping and fixing the adjustment arm (9); A pressing force adjustment pin (3): movably arranged in the base (1), and used to work in conjunction with the pressing assembly (100) to drive the pressing assembly (100) to further press the adjustment arm (9) when the machine tool is working; Positioning rod (4): used for being inserted into the adjusting arm (9) and connected to the positioning block (2) to fix the adjusting arm (9).

2. The processing fixture for the automatic adjustment arm according to claim 1, characterized in that: The adjusting arm (9) is provided with a worm hole (91) and a worm wheel hole (92); the positioning rod (4) is detachably connected to the positioning block (2); when fixed, the positioning rod (4) passes through the worm hole (91) and is detachably connected to the positioning block (2).

3. The processing fixture of the automatic adjustment arm according to claim 2, characterized in that: The adjustment arm (9) is further provided with a slot (93), the positioning block (2) is provided with an inserting block (21) fixedly inserted in the slot (93), and the inserting block (21) is provided with a slot (211) for the positioning rod (4) to be inserted into.

4. The processing fixture for the automatic adjustment arm according to claim 3 is characterized in that: A clamping block (20) is also provided on the base (1), and the positioning block (2) is fixed to the base (1) via the clamping block (20).

5. The processing fixture for the automatic adjustment arm according to claim 1, characterized in that: The clamping assembly (100) comprises a clamping block (5) which abuts against the end surface of the adjusting arm (9) when fixed, and a connecting rod (6) rotatably arranged on the base (1); the clamping block (5) is rotatably arranged at one end of the connecting rod (6); when fixed, the clamping block (5) is rotated so that the clamping block (5) abuts against the end surface of the adjusting arm (9); when the machine tool is working, the clamping force adjustment pin (3) pushes the other end of the connecting rod (6) so that the connecting rod (6) drives the clamping block (5) to swing toward the adjusting arm (9), thereby enhancing the clamping force against the end surface of the adjusting arm (9).

6. The processing fixture for the automatic adjustment arm according to claim 5, characterized in that: The connecting rod (6) is also provided with an adjusting bolt (61) and an adjusting nut (62) for adjusting the distance between the adjusting bolt (61) and the pressing force adjusting pin (3); the adjusting bolt (61) is aligned with the pressing force adjusting pin (3) so that when the machine tool is in operation, the pressing force adjusting pin (3) drives the connecting rod (6) to swing by pushing the adjusting bolt (61).

7. The processing fixture for the automatic adjustment arm according to claim 6, characterized in that: The clamping assembly (100) further comprises a connecting pin (7), and during installation, the connecting pin (7) passes through the connecting rod (6) so that the connecting rod (6) is rotatably arranged on the base (1) via the connecting pin (7).

8. The processing fixture for the automatic adjustment arm according to claim 7, characterized in that: The connecting pin (7) is provided with a seat body (71), the seat body (71) is provided with a first positioning hole (711), the base (1) is provided with a second positioning hole (11) aligned with the first positioning hole (711), and plug-ins are provided in the first positioning hole (711) and the second positioning hole (11) so as to limit the connecting pin (7) from rotating on the base (1).

9. The processing fixture for the automatic adjustment arm according to claim 8, characterized in that: The clamping assembly (100) further comprises a mounting block (8), and the clamping block (5) is rotatably arranged on the base (1) via the mounting block (8).

10. The processing fixture for the automatic adjustment arm according to claim 9, characterized in that: The mounting block (8) is provided with a first mounting through hole (81), and during mounting, the connecting pin (7) passes through the first mounting through hole (81) so that the mounting block (8) is fixed on the connecting rod (6).

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