阅读说明：本技术 毂刹制动蹄块限位弧槽铣加工装置 (Hub brake shoe limiting arc groove milling device ) 是由 吴玉荣 于 2021-08-23 设计创作，主要内容包括：本发明涉及摩托车配件加工技术领域,特别涉及一种毂刹制动蹄块限位弧槽铣加工装置,包括：基座、送料限位座、固定压块、铣刀轮、弹性压板,所述弹性压板包括压板本体和弹簧,所述压板本体位于送料限位座的另一侧的上方,所述压板本体靠近送料限位座始端的一端铰接于基座,所述压板本体靠近送料限位座末端的一端的上部通过弹簧连接于基座,通过设计特定结构的送料限位座、固定压块和弹性压板结构,通过其特定的位置关系,既能通过连续送料方式以提高毂刹制动蹄块限位弧槽的加工效率,又能使毂刹制动蹄块在输送并铣加工限位弧槽时,使毂刹制动蹄块得到充分稳定的定位,从而提高毂刹制动蹄块限位弧槽的加工精度。(The invention relates to the technical field of motorcycle accessory processing, in particular to a hub brake shoe limiting arc groove milling device, which comprises: the base, the spacing seat of pay-off, the fixed briquetting, the milling cutter wheel, the elastic pressing plate includes clamp plate body and spring, the clamp plate body is located the top of the opposite side of the spacing seat of pay-off, the clamp plate body is close to the one end at the spacing seat top of pay-off and articulates in the base, spring coupling is passed through on the upper portion that the clamp plate body is close to the terminal one end of the spacing seat of pay-off in the base, through the spacing seat of pay-off, fixed briquetting and the elastic pressing plate structure of design specific structure, through its specific position relation, can be through continuous pay-off mode in order to improve the machining efficiency in the spacing arc groove of hub braking shoe, can make hub braking shoe obtain fully stable location when carrying and milling the spacing arc groove again, thereby improve the machining precision in the spacing arc groove of hub braking shoe.)

1. Hub braking shoe spacing arc groove mills processingequipment, its characterized in that includes:

a base;

the feeding limiting seat is fixed on the base, a minor arc-shaped groove is formed in the upper portion of the feeding limiting seat, and the axial direction of the minor arc-shaped groove is parallel to the feeding direction;

the fixed pressing block is fixed on the base, the fixed pressing block is positioned above one side of the feeding limiting seat, and the middle of the fixed pressing block is provided with a strip-shaped hole;

the plane where the milling cutter wheel is located in the radial direction is parallel to the feeding direction, and the lower edge of the milling cutter wheel penetrates through the strip-shaped hole in a suspended mode and extends to the position below the strip-shaped hole;

the elastic pressing plate comprises a pressing plate body and a spring, the pressing plate body is located above the other side of the feeding limiting seat, one end, close to the starting end of the feeding limiting seat, of the pressing plate body is hinged to the base, and the upper portion, close to the tail end of the feeding limiting seat, of the pressing plate body is connected to the base through the spring.

2. The hub brake shoe limit arc groove milling device according to claim 1, wherein the minimum distance between the pressing plate body and the beginning end of the feeding limit seat is larger than the minimum distance between the pressing plate body and the end of the feeding limit seat when the elastic pressing plate is in a free state.

3. The hub brake shoe limit arc groove milling device according to claim 1, further comprising a limit screw, wherein the lower end of the limit screw is connected to the pressure plate body, the base is provided with a connecting plate, the upper end of the limit screw penetrates through the connecting plate, the limit screw is connected with an adjusting nut, the adjusting nut is located on the upper portion of the connecting plate, the spring is sleeved on the limit screw, the upper end of the spring abuts against the connecting plate, and the lower end of the spring abuts against the pressure plate body.

4. The hub brake shoe limit arc groove milling device according to claim 1, wherein the number of the springs is 2, and the two springs are arranged and distributed along the feeding direction.

5. The hub brake shoe limit arc groove milling device according to claim 1, wherein the distance between the pressure plate body and the fixed pressure block is less than 1 cm.

6. The hub brake shoe limiting arc groove milling device according to claim 1, further comprising a material pushing mechanism arranged at the beginning of the feeding limiting seat, wherein the material pushing mechanism comprises a guide rail, a sliding block, a cam and a tension spring, the guide rail is fixed on the base, the sliding block is connected to the guide rail in a sliding mode, the curved surface of the cam is in sliding fit with the beginning of the sliding block, a pushing block used for pushing the hub brake shoe is arranged at the tail end of the sliding block, one end of the tension spring is connected to the sliding block, the other end of the tension spring is connected to the base, and the sliding block moves back and forth along the guide rail under the action of the pushing force of the cam and the resilience force of the tension spring.

7. The hub brake shoe limit arc groove milling device according to claim 6, wherein a roller is arranged at the beginning end of the slider, and the slider is connected with the curved surface of the cam in a rolling manner through the roller.

8. The hub brake shoe limit arc groove milling device according to claim 1, wherein a clamping and conveying mechanism is further arranged on the base, the clamping and conveying mechanism comprises an XZ biaxial module and a pneumatic clamp connected to the XZ biaxial module, the XZ biaxial module is used for driving the pneumatic clamp to move in biaxial directions along a horizontal X axis and a vertical Z axis, and the X axis is perpendicular to the axial direction of the feeding limit seat.

9. The hub brake shoe limit arc groove milling device according to claim 8, wherein a conveying chain mechanism is further connected to the base, the conveying chain mechanism comprises two rotary conveying chains which are parallel to each other, and the tail end of the conveying chain mechanism is located below the clamping conveying mechanism.

Technical Field

The invention relates to the technical field of motorcycle accessory processing, in particular to a hub brake shoe limiting arc groove milling device.

Background

The hub brake shoe is one of the most important security parts of the motorcycle, and plays a key braking role in the braking process; the contact surface between the brake pad and the wheel hub and the friction force of the brake pad directly influence the braking performance. Therefore, in the limiting arc processing technology of the hub brake shoe, one process is to mill a limiting arc groove at one end of the hub brake shoe.

In the prior art, in order to achieve the high precision of the milling of the limiting arc groove, each hub brake shoe to be processed needs to be clamped on the base independently, then the hub brake shoe to be processed is milled one by one, the milling precision is guaranteed, the production efficiency is low, the hub brake shoe to be clamped needs to be replaced manually and repeatedly, and continuous assembly line operation cannot be achieved.

And if the limiting arc groove of the hub brake shoe is processed in a pipeline operation mode, the hub brake shoe is difficult to be stably positioned, so that the requirement on the processing precision of the limiting arc groove can not be met.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: how can improve the machining efficiency in hub braking shoe spacing arc groove, can improve the machining precision in hub braking shoe spacing arc groove again.

In order to solve the technical problems, the invention adopts the technical scheme that:

the utility model provides a hub braking shoe spacing arc groove mills processingequipment, includes:

a base;

the feeding limiting seat is fixed on the base, a minor arc-shaped groove is formed in the upper portion of the feeding limiting seat, and the axial direction of the minor arc-shaped groove is parallel to the feeding direction;

the fixed pressing block is fixed on the base, the fixed pressing block is positioned above one side of the feeding limiting seat, and the middle of the fixed pressing block is provided with a strip-shaped hole;

the plane where the milling cutter wheel is located in the radial direction is parallel to the feeding direction, and the lower edge of the milling cutter wheel penetrates through the strip-shaped hole in a suspended mode and extends to the position below the strip-shaped hole;

the elastic pressing plate comprises a pressing plate body and a spring, the pressing plate body is located above the other side of the feeding limiting seat, one end, close to the starting end of the feeding limiting seat, of the pressing plate body is hinged to the base, and the upper portion, close to the tail end of the feeding limiting seat, of the pressing plate body is connected to the base through the spring.

Further, when the elastic pressing plate is in a free state, the minimum distance between the pressing plate body and the starting end of the feeding limiting seat is larger than the minimum distance between the pressing plate body and the tail end of the feeding limiting seat.

Further, the lower end of the limiting screw is connected to the pressing plate body, the base is provided with a connecting plate, the upper end of the limiting screw penetrates through the connecting plate, the limiting screw is connected with an adjusting nut, the adjusting nut is located on the upper portion of the connecting plate, the spring is sleeved on the limiting screw, the upper end of the spring abuts against the connecting plate, and the lower end of the spring abuts against the pressing plate body.

Furthermore, the number of the springs is 2, and the two springs are arranged and distributed along the feeding direction.

Further, the distance between the pressing plate body and the fixed pressing block is smaller than 1 cm.

Further, still including setting up the pushing equipment at the spacing seat top of pay-off, pushing equipment includes guide rail, slider, cam and extension spring, the guide rail is fixed in the base, slider sliding connection is in the guide rail, the curved surface of cam and the top sliding fit of slider, the end of slider is equipped with the ejector pad that is used for promoting hub braking shoe, the one end of extension spring is connected in the slider, and the other end is connected in the base for the slider is along guide rail reciprocating motion under the driving force of cam and the resilience force effect of extension spring.

Furthermore, the starting end of the sliding block is provided with a roller, and the sliding block is in rolling connection with the curved surface of the cam through the roller.

Further, still be equipped with centre gripping conveying mechanism on the base, centre gripping conveying mechanism includes XZ biax module and connects in the air jig of XZ biax module, XZ biax module is used for driving air jig and carries out the biax direction along horizontally X axle and vertical Z axle and remove, the axial of the spacing seat of X axle perpendicular to pay-off.

Further, the base is further connected with a conveying chain mechanism, the conveying chain mechanism comprises two rotary conveying chains which are parallel to each other, and the tail end of the conveying chain mechanism is located below the clamping conveying mechanism.

The invention has the beneficial effects that: according to the milling device structure for the limiting arc groove of the hub brake shoe, the feeding limiting seat, the fixed pressing block and the elastic pressing plate structure with specific structures are designed, and the specific position relation of the feeding limiting seat, the fixed pressing block and the elastic pressing plate structure can improve the processing efficiency of the limiting arc groove of the hub brake shoe through a continuous feeding mode, and the hub brake shoe can be positioned fully and stably when the limiting arc groove is conveyed and milled, so that the processing precision of the limiting arc groove of the hub brake shoe is improved.

Drawings

Fig. 1 is a schematic structural view of a hub brake shoe limit arc groove milling device according to an embodiment of the present invention;

fig. 2 is a top view of a hub brake shoe limit arc groove milling device according to an embodiment of the present invention;

FIG. 3 is a side view of a hub brake shoe limit arc groove milling device according to an embodiment of the present invention;

description of reference numerals:

1. a base; 11. a connecting plate; 2. a feeding limiting seat; 21. a minor arc groove; 3. fixing a pressing block; 31. a strip-shaped hole; 4. milling a cutter wheel; 5. an elastic pressure plate; 51. a pressing plate body; 52. a spring; 53. a limit screw; 54. adjusting the nut; 6. a material pushing mechanism; 61. a guide rail; 62. a slider; 621. a roller; 63. a cam; 64. a tension spring; 7. a clamping and conveying mechanism; 71. an XZ biaxial module; 72. a pneumatic clamp; 8. a conveying chain mechanism; 81. and (4) rotating the conveying chain.

Detailed Description

In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Referring to fig. 1 to 3, the present invention relates to a hub brake shoe limit arc groove milling device, which includes:

a base 1;

the feeding limiting seat 2 is fixed on the base 1, a minor arc-shaped groove 21 is formed in the upper portion of the feeding limiting seat 2, and the axial direction of the minor arc-shaped groove 21 is parallel to the feeding direction;

the fixed pressing block 3 is fixed on the base 1, the fixed pressing block 3 is positioned above one side of the feeding limiting seat 2, and the middle of the fixed pressing block 3 is provided with a strip-shaped hole 31;

the plane where the milling cutter wheel 4 is located in the radial direction is parallel to the feeding direction, and the lower edge of the milling cutter wheel 4 penetrates through the strip-shaped hole 31 in a suspended mode and extends to the position below the strip-shaped hole 31;

the elastic pressing plate 5, the elastic pressing plate 5 includes a pressing plate body 51 and a spring 52, the pressing plate body 51 is located above the other side of the feeding limiting seat 2, one end of the pressing plate body 51 close to the beginning of the feeding limiting seat 2 is hinged to the base 1, and the upper portion of one end of the pressing plate body 51 close to the end of the feeding limiting seat 2 is connected to the base 1 through the spring 52.

The working principle of the hub brake shoe limiting arc groove milling device is as follows: the hub brake shoe is continuously pushed along the feeding limiting seat 2 by a pushing mechanism, the hub brake shoe is conveyed in the feeding limiting seat 2 in a straight line shape in the feeding direction (axial direction of the minor arc-shaped groove 21) with an opening upwards, the radian of the minor arc-shaped groove 21 is designed to be consistent with the radian of the outer arc surface of the hub brake shoe, the hub brake shoe can be regularly distributed on the feeding limiting seat 2 and conveyed in the feeding direction, one end of the hub brake shoe is a plane, the other end of the hub brake shoe needs to be milled to form a limiting arc groove, when the hub brake shoe is conveyed in the feeding limiting seat 2, one end needing to be processed with the limiting arc groove is tightly attached to the lower part of the fixed pressing block 3, the other end (plane end) is gradually changed from a free state to a pressing state under the action of the elastic pressing plate 5, when the hub brake shoe moves to the milling cutter wheel 4, the milling cutter wheel 4 is just aligned to the limiting arc groove of the hub brake shoe, the limit arc groove is milled, and at the moment, the other end (plane end) of the brake shoe of the hub brake is fully positioned under the pressure of the rebound potential energy generated by the compression of the spring 52 of the elastic pressing block, so that the milling precision of the limit arc groove is ensured.

Among the above-mentioned spacing arc groove of hub braking shoe mills processingequipment structure, pay-off spacing seat 2 through designing specific structure, briquetting 3 and elastic pressing plate 5 structure, through its specific position relation, can be through the machining efficiency of continuous pay-off mode in order to improve the spacing arc groove of hub braking shoe, can make the hub braking shoe of braking again carry and mill when processing spacing arc groove, make the hub braking shoe of braking obtain abundant stable location, thereby improve the machining precision of the spacing arc groove of hub braking shoe of braking.

Further, in the hub brake shoe limiting arc groove milling device structure, the elastic pressing plate 5 is in a free state, and the minimum distance between the pressing plate body 51 and the beginning end of the feeding limiting seat 2 is larger than the minimum distance between the pressing plate body 51 and the tail end of the feeding limiting seat 2.

In the structure, namely the pressing plate body 51 is in a free state, the height of the starting end is higher than that of the tail end, in the structure, when a hub brake shoe just enters the starting end of the feeding limiting seat 2, the plane end of the hub brake shoe does not contact the pressing plate body 51 to generate limitation, and when the hub brake shoe is conveyed in the feeding direction continuously, the distance between the plane end of the hub brake shoe and the pressing plate body 51 is gradually reduced until the hub brake shoe is contacted, then the pressing plate body 51 is forced to move upwards, the spring 52 is contracted, and the elastic potential energy of the spring 52 is utilized to apply pressure to the plane end of the hub brake shoe below, so that the limiting purpose is achieved.

Further, in the hub brake shoe limiting arc groove milling device structure, the lower end of a limiting screw 53 is connected to the pressing plate body 51, the base 1 is provided with the connecting plate 11, the upper end of the limiting screw 53 penetrates through the connecting plate 11, the limiting screw 53 is connected with an adjusting nut 54, the adjusting nut 54 is located on the upper portion of the connecting plate 11, the spring 52 is sleeved on the limiting screw 53, the upper end of the spring 52 abuts against the connecting plate 11, and the lower end of the spring 52 abuts against the pressing plate body 51.

In the structure, the connecting position of the connecting plate 11 and the pressing plate body 51 can be changed by rotating the adjusting nut 54, the distance between the connecting plate 11 and the pressing plate body 51 can be adjusted, the other end of the pressing plate body 51 is hinged to the rack, and the connecting plate 11 is directly fixed on the base 1, so that the inclination angle of the pressing plate can be adjusted by rotating the adjusting nut 54, the best inclination angle is achieved, and the limit arc groove milling machining precision of the hub brake shoe is enabled to reach the best state.

Further, in the structure of the hub brake shoe limiting arc groove milling device, the number of the springs 52 is 2, and the two springs 52 are arranged and distributed along the feeding direction.

Above-mentioned structure can further improve the hub braking shoe spacing arc groove and mill the course of working, the spacing stability of its plane end to further improve and mill the machining precision.

Further, in the hub brake shoe limiting arc groove milling device structure, the distance between the pressing plate body 51 and the fixed pressing block 3 is less than 1 cm.

The structure can improve the limit stability of the plane end of the brake shoe of the hub brake on one hand.

Further, among the spacing arc groove of above-mentioned hub brake shoe mills processingequipment structure, still including setting up the pushing equipment 6 at the 2 top of the spacing seat of pay-off, pushing equipment 6 includes guide rail 61, slider 62, cam 63 and extension spring 64, guide rail 61 is fixed in base 1, slider 62 sliding connection is in guide rail 61, the curved surface of cam 63 and the top sliding fit of slider 62, the end of slider 62 is equipped with the ejector pad that is used for promoting hub brake shoe, the one end of extension spring 64 is connected in slider 62, and the other end is connected in base 1 for slider 62 follows guide rail 61 reciprocating motion under the impetus of the driving force of cam 63 and extension spring 64.

As can be seen from the above description, the XZ biaxial module 71 drives the pneumatic clamp 72 to move in the biaxial direction along the horizontal X axis and the vertical Z axis, so as to clamp the brake shoe of the hub brake to be milled to the beginning of the feeding limit seat 2 through the pneumatic clamp 72.

Further, in the hub brake shoe limiting arc groove milling device structure, the starting end of the slider 62 is provided with a roller 621, and the slider 62 is connected with the curved surface of the cam 63 through the roller 621 in a rolling manner.

As can be seen from the above description, the sliding block 62 is connected with the curved surface of the cam 63 via the roller 621 in a rolling manner, so as to reduce the friction resistance between the sliding block 62 and the cam 63.

Further, among the above-mentioned hub brake shoe spacing arc groove milling process device structure, still be equipped with centre gripping conveying mechanism 7 on the base 1, centre gripping conveying mechanism 7 includes XZ biax module 71 and connects in the air jig 72 of XZ biax module 71, XZ biax module 71 is used for driving air jig 72 and carries out biax direction along horizontally X axle and vertical Z axle and remove, the axial of the spacing seat 2 of X axle perpendicular to pay-off.

As can be seen from the above description, the XZ biaxial module 71 drives the pneumatic clamp 72 to move in the biaxial direction along the horizontal X axis and the vertical Z axis, so as to clamp the brake shoe of the hub brake to be milled to the beginning of the feeding limit seat 2 through the pneumatic clamp 72.

Further, in the hub brake shoe limiting arc groove milling device structure, the base 1 is further connected with a conveying chain mechanism 8, the conveying chain mechanism comprises two mutually parallel rotary conveying chains 81, and the tail end of the conveying chain mechanism 8 is located below the clamping conveying mechanism 7.

It can be known from the above description that the hub brake shoe to be milled can be manually erected between the two rotary conveying chains 81 in advance, the hub brake shoe can be conveyed to the lower part of the clamping conveying mechanism 7 by the rotary conveying chains 81 and then blocked by the baffle of the base 1, the conveying is stopped, and a plurality of hub brake shoes at the rear part form a neat stack in the horizontal direction, when the hub brake shoe blocked by the baffle is conveyed to the starting end of the feeding limiting seat 2 by the clamping conveying mechanism 7, the next hub brake shoe moves to the baffle, so as to complete the automatic assembly line feeding, the structure that the two rotary conveying chains 81 are parallel to each other is designed to erect the hub brake shoe can not only ensure that the two ends of the hub brake shoe are upward in the conveying process, but also can reduce the contact area between the rotary conveying chains 81 and the hub brake shoe, and reduce the friction force, the rotary conveying chain 81 can rotate continuously, and when the hub brake shoe blocks are blocked by the baffle plates and stop being conveyed forwards, the sliding friction force between the rotary conveying chain 81 and the hub brake shoe blocks cannot influence the orderly arrangement of the hub brake shoe blocks on the rotary conveying chain 81.

Example 1

The utility model provides a hub braking shoe spacing arc groove mills processingequipment, includes: a base 1; the feeding limiting seat 2 is fixed on the base 1, a minor arc-shaped groove 21 is formed in the upper portion of the feeding limiting seat 2, and the axial direction of the minor arc-shaped groove 21 is parallel to the feeding direction; the fixed pressing block 3 is fixed on the base 1, the fixed pressing block 3 is positioned above one side of the feeding limiting seat 2, and the middle of the fixed pressing block 3 is provided with a strip-shaped hole 31; the plane where the milling cutter wheel 4 is located in the radial direction is parallel to the feeding direction, and the lower edge of the milling cutter wheel 4 penetrates through the strip-shaped hole 31 in a suspended mode and extends to the position below the strip-shaped hole 31; the elastic pressing plate 5, the elastic pressing plate 5 includes a pressing plate body 51 and a spring 52, the pressing plate body 51 is located above the other side of the feeding limiting seat 2, one end of the pressing plate body 51 close to the beginning of the feeding limiting seat 2 is hinged to the base 1, and the upper portion of one end of the pressing plate body 51 close to the end of the feeding limiting seat 2 is connected to the base 1 through the spring 52.

The minimum distance between the pressure plate body 51 and the starting end of the feeding limiting seat 2 is larger than the minimum distance between the pressure plate body 51 and the tail end of the feeding limiting seat 2. The lower end of a limit screw 53 is connected to the pressing plate body 51, the base 1 is provided with the connecting plate 11, the upper end of the limit screw 53 penetrates through the connecting plate 11, the limit screw 53 is connected with an adjusting nut 54, the adjusting nut 54 is positioned on the upper portion of the connecting plate 11, the spring 52 is sleeved on the limit screw 53, the upper end of the spring 52 abuts against the connecting plate 11, and the lower end of the spring 52 abuts against the pressing plate body 51. The number of the springs 52 is 2, and two springs 52 are arranged and distributed along the feeding direction. The distance between the pressure plate body 51 and the fixed pressure block 3 is less than 1 cm. Still including setting up the pushing equipment 6 at the 2 top of the spacing seat of pay-off, pushing equipment 6 includes guide rail 61, slider 62, cam 63 and extension spring 64, guide rail 61 is fixed in base 1, slider 62 sliding connection is in guide rail 61, the curved surface of cam 63 and the top sliding fit of slider 62, slider 62's end is equipped with the ejector pad that is used for promoting hub braking shoe, the one end of extension spring 64 is connected in slider 62, and the other end is connected in base 1 for slider 62 is along guide rail 61 reciprocating motion under the impetus of the driving force of cam 63 and extension spring 64. The starting end of the slide block 62 is provided with a roller 621, and the slide block 62 is connected with the curved surface of the cam 63 in a rolling manner through the roller 621. Still be equipped with centre gripping conveying mechanism 7 on the base 1, centre gripping conveying mechanism 7 includes XZ biax module 71 and connects in the air jig 72 of XZ biax module 71, XZ biax module 71 is used for driving air jig 72 and carries out the biax direction along horizontally X axle and vertical Z axle and remove, the axial of the spacing seat 2 of X axle perpendicular to pay-off. The base 1 is further connected with a conveying chain mechanism 8, the conveying chain mechanism comprises two mutually parallel rotary conveying chains 81, and the tail end of the conveying chain mechanism 8 is located below the clamping conveying mechanism 7.

In summary, in the milling device structure for the limiting arc groove of the hub brake shoe provided by the invention, by designing the feeding limiting seat, the fixed pressing block and the elastic pressing plate structure with the specific structure and by the specific position relationship, the processing efficiency of the limiting arc groove of the hub brake shoe can be improved by a continuous feeding mode, and the hub brake shoe can be positioned sufficiently and stably when the limiting arc groove is conveyed and milled, so that the processing precision of the limiting arc groove of the hub brake shoe is improved. The structure is characterized in that the pressing plate body is in a free state, the height of the starting end is higher than that of the tail end, when a hub brake shoe just enters the starting end of the feeding limiting seat, the plane end of the hub brake shoe does not contact the pressing plate body to limit, when the hub brake shoe is conveyed in the feeding direction continuously, the distance between the plane end of the hub brake shoe and the pressing plate body is gradually reduced until the hub brake shoe is contacted, the pressing plate body is forced to move upwards, the spring is contracted, and the elastic potential energy of the spring is utilized to apply pressure to the plane end of the hub brake shoe below the pressing plate body to achieve the limiting purpose. The accessible rotation regulation nut makes its and the hookup location of screw change, can adjust the interval between connecting plate and the clamp plate body, because the other end of clamp plate body articulates in the frame, and the connecting plate is the snap-on in the base, therefore the inclination of adjustable clamp plate is adjusted in the rotation of adjusting nut to make it reach best inclination, make the spacing arc groove of hub braking shoe mill the machining precision and reach the optimum state.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.