Shaping tool for drum brake pad

Abstract

The utility model relates to a drum brake pad shaping tool which is composed of a workbench, a mounting base rotationally mounted on the workbench, a driving assembly driving the mounting base to rotate, a supporting assembly located on the mounting base and a polishing assembly located on the workbench and located on the rotating track of the supporting assembly. The supporting assembly comprises a mounting frame, a lead screw, a left sliding block in threaded fit with the lead screw and a right sliding block allowing the lead screw to rotate, the right sliding block is fixedly mounted on the mounting frame, a first bevel gear is fixedly mounted on the lead screw and located on the right sliding block, a second bevel gear meshed with the first bevel gear is rotationally mounted on the mounting frame, and a rotary disc is fixedly mounted below the second bevel gear. The scheme is adopted; according to the shaping tool for the drum type brake pad, a rotating disc is rotated to drive a second bevel gear to be meshed with a first bevel gear so as to achieve rotation of a lead screw, a right sliding block is driven to slide in the length direction of the lead screw, and then the shaping tool is matched with brake shoes of different sizes to achieve supporting of one ends of the brake shoes.

Description

Technical Field

[0001] The utility model relates to a shaping tool for a drum brake pad. Background Art

[0002] Compared with disc brakes, circular drum brake pads have lower manufacturing costs. This is mainly because their structure is relatively simple and they use less materials. They are now more commonly used on the rear wheels of small cars. Drum brakes can provide a larger braking torque, especially during the first braking, because the brake pads surround the brake drum and can provide a larger friction area. This is especially important for heavy-loaded or large vehicles. When braking, the drum brake pads are pressed close to the driving wheel to achieve braking.

[0003] Chinese Patent No.: CN202320275272.7 discloses a shaping tool for a drum brake pad, which is formed by putting the brake shoe of the drum brake pad on the inner ring grinding block, and then driving the slide plate to expand through the first electric steel to support the two ends of the brake shoe and then grind the outer ring of the brake shoe. Since the spacing between the two slide plates is adjustable, it can cooperate with more brake shoes of different sizes. However, since the cylinder drive relies on gas pressure control, there may be a situation where the positioning accuracy and repeated positioning accuracy of the slide plate are low after starting the cylinder, which makes it inconvenient to adjust the spacing of the slide plates. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a drum brake pad shaping tool that drives the second bevel gear to engage with the first bevel gear by rotating a turntable, thereby realizing the rotation of the screw rod and driving the right slider to slide along the length direction of the screw rod, thereby realizing cooperation with brake shoes of different sizes to achieve support for one end of the brake shoe.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: it consists of a workbench, a mounting base rotatably mounted on the workbench, a driving assembly driving the mounting base to rotate, a supporting assembly located on the mounting base, and a grinding assembly located on the workbench and on the rotation track of the supporting assembly, the supporting assembly includes a mounting frame, a screw rod, a left slider matched with the screw rod thread, and a right slider for the screw rod to rotate, the right slider is fixedly mounted on the mounting frame, the screw rod is located on the right slider and a first bevel gear is fixedly mounted thereon, a second bevel gear meshing with the first bevel gear is rotatably mounted on the mounting frame, and a turntable is fixedly mounted below the second bevel gear.

[0006] The utility model is further configured as follows: the right sliding block comprises a right vertical plate, and the right side end surface of the right vertical plate abuts against the first bevel gear.

[0007] The utility model is further configured as follows: the left sliding block includes a left vertical plate and a left matching plate, the left matching plate is located above the left vertical plate, the width of the left matching plate is smaller than the width of the left vertical plate, and the mounting frame includes a matching groove for the left matching plate to slide left and right and a limiting groove for the left vertical plate to slide.

[0008] The utility model is further configured as follows: the rotating disk is provided with a plurality of contact convex strips at intervals along the circumferential direction, and the installation frame is provided with a contact groove at the front side of the rotating disk.

[0009] The utility model is further configured as follows: the workbench is provided with a rear collecting trough below the mounting frame, the workbench is provided with a front collecting trough in front of the rear collecting trough, the front collecting trough and the rear collecting trough are connected to each other, the front collecting trough is inclined from top to bottom and from back to front, and the workbench is provided with a detachable baffle at the front collecting trough.

[0010] The utility model is further configured as follows: the baffle is rotatably mounted on the workbench, and disassembly plates are fixedly mounted on both left and right sides of the baffle, each of the disassembly plates is protruding rearwards with a mounting block, and each of the mounting blocks is interference fit with the workbench.

[0011] The utility model is further configured as follows: each installation block is recessed inwardly with a matching slot, the workbench is provided with an installation slot corresponding to each installation block, and the workbench is located in each installation slot and a matching block is protrudingly provided.

[0012] By adopting the above technical solution, since the first bevel gear is meshed with the second bevel gear, and the first bevel gear is fixedly installed on the screw rod, the second bevel gear can be rotated by rotating the turntable fixed under the second bevel gear, thereby driving the first bevel gear to rotate and then driving the screw rod to rotate to realize the movement of the left slider along the length direction of the screw rod, that is, changing the spacing between the left slider and the right slider so that it can cooperate with more brake shoes of different sizes to realize support on both sides. Compared with the cylinder driving the left slider to move, the cylinder drive relies on gas pressure control. After starting the cylinder, there may be a situation where the positioning accuracy and repeatability of the slide plate are low, thereby causing inconvenience to the spacing adjustment of the slide plate. The meshing of the first bevel gear and the second bevel gear drives the left slider located on the screw rod to move left and right, which can make the left slider more accurately move and adjust according to the spacing requirements, thereby more efficiently realizing the change of the spacing between the left slider and the right slider. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is an assembly diagram of the utility model in which the baffle is not rotated;

[0015] Figure 2 This is a three-dimensional diagram of the utility model after the middle baffle is turned downward;

[0016] Figure 3 It is a cross-sectional view of the utility model;

[0017] Figure 4 for Figure 3 A magnified view of middle;

[0018] Figure 5 for Figure 4 Enlarged view of middle B;

[0019] Figure 6 for Figure 4 Enlarged view of middle C;

[0020] Figure 7 for Figure 4 Enlarged view of D in the middle.

[0021] In the figure: 1-working table, 11-rear collecting tank, 12-front collecting tank, 13-baffle, 131-disassembly plate, 1311-installation plug-in block, 13111-matching slot, 14-installation slot, 141-matching plug-in block;

[0022] 2-Mounting seat;

[0023] 3-driving assembly, 31-motor, 32-driving gear, 33-driven gear;

[0024] 4-support assembly, 41-installation frame, 411-second bevel gear, 412-contact groove, 413-matching groove, 414-limiting groove, 415-limiting plug, 42-screw rod, 421-first bevel gear, 43-left slider, 431-left vertical plate, 432-left matching plate, 44-right slider, 45-turntable, 451-contact convex strip;

[0025] 5-grinding assembly, 51-hydraulic cylinder, 52-grinding block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1-Figure 7As shown, the utility model discloses a shaping tool for drum brake pads, which consists of a workbench 1, a mounting seat 2 rotatably mounted on the workbench 1, a driving component 3 driving the mounting seat 2 to rotate, a supporting component 4 located on the mounting seat 2, and a grinding component 5 located on the workbench 1 and on the rotation track of the supporting component 4. The driving component 3 includes a motor 31, a driving gear 32 fixedly mounted on the motor 31 by a key connection or the like, and a driven gear 33 fixedly mounted on the mounting seat 2 by a key connection or the like and meshing with the driving gear 32. After the inner ends of the supporting member are respectively sleeved on the brake shoes to be shaped, the grinding component 5 includes a hydraulic cylinder 5 1 and the grinding block 52, the hydraulic cylinder 51 is fixed with the grinding block 52, the hydraulic cylinder 51 is started so that the grinding block 52 is close to the support assembly 4 and abuts against it, and the motor 31 is started at this time. At this time, the driving gear 32 rotates, thereby driving the driven gear 33 to rotate and causing the mounting seat 2 to rotate, so that the support assembly 4 on the mounting seat 2 can rotate, so that the grinding block 52 grinds the outer ring of the brake shoe, and the support assembly 4 includes a mounting frame 41, a screw rod 42, a left slider 43 threadedly matched with the screw rod 42, and a right slider 44 for the screw rod 42 to rotate, the right slider 44 is fixedly installed on the mounting frame 41, and the screw rod 42 is located on the right slider 44 through A first bevel gear 421 is fixedly installed by key connection, welding, etc., and a second bevel gear 411 meshing with the first bevel gear 421 is rotatably installed on the installation frame 41. A turntable 45 is fixedly installed below the second bevel gear 411 by welding, etc. Since the first bevel gear 421 meshes with the second bevel gear 411, and the first bevel gear 421 is fixedly installed on the screw rod 42, the turntable 45 fixed below the second bevel gear 411 can be rotated to realize the rotation of the second bevel gear 411, thereby driving the first bevel gear 421 to rotate, and then driving the screw rod 42 to rotate, so that the left slider 43 can be moved along the length direction of the screw rod 42. Movement, that is, changing the distance between the left slider 43 and the right slider 44 so that it can cooperate with more brake shoes of different sizes to support both sides. Compared with the cylinder driving the left slider 43 to move, the cylinder drive relies on gas pressure control. After starting the cylinder, there may be a situation where the positioning accuracy and repeated positioning accuracy of the slide plate are low, which causes inconvenience to the adjustment of the distance between the slide plates. The engagement of the first bevel gear 421 and the second bevel gear 411 drives the left slider 43 located on the screw rod 42 to move left and right. The left slider 43 can be moved and adjusted more accurately according to the distance requirements, thereby more efficiently realizing the change of the distance between the left slider 43 and the right slider 44.

[0028] Among them, the right slider 44 includes a right vertical plate, and the right side end face of the right vertical plate abuts against the first bevel gear 421. Since the right vertical plate abuts against the first bevel gear 421, when the support assembly 4 is assembled, when the first bevel gear 421 is fixed on the screw rod 42, the right side end face of the first bevel gear 421 abuts against the right vertical plate, thereby providing positioning and convenience for the first bevel gear 421 to be fixed on the screw rod 42.

[0029] Preferably, the left slider 43 includes a left vertical plate 431 and a left matching plate 432, the left matching plate 432 is located above the left vertical plate 431, the width of the left matching plate 432 is smaller than the width of the left vertical plate 431, the installation frame 41 includes a matching groove 413 for the left matching plate 432 to slide left and right and a limiting groove 414 for the left vertical plate 431 to slide, and the installation frame 41 is provided with a limiting plug block 415 above the limiting groove 414. It is larger than the left matching plate 432. Therefore, when the left slider 43 is installed in the installation frame 41, the left vertical plate 431 needs to forcibly pass over the limiting plugs 415 and the matching grooves 413 to be able to be located in the limiting grooves 414. At this time, the limiting plugs 415 are located above the left vertical plate 431. Therefore, in the absence of external force, the left vertical plate 431 will not move upward, thereby making the left vertical plate 431 stably located in the limiting groove 414 and the matching plate stably located in the matching groove 413, that is, the moving path of the left slider 43 is limited.

[0030] Preferably, the turntable 45 is provided with a plurality of contact ridges 451 at intervals along the circumferential direction, and the mounting frame 41 is provided with a contact groove 412 on the front side of the turntable 45. Since the mounting frame 41 is provided with the contact groove 412 on the front side of the turntable 45, the user can more smoothly and directly put his hand into the contact groove 412 and apply torque to the turntable 45 to realize the rotation of the second bevel gear 411 to drive the first bevel gear 421 and the screw rod 42 to rotate. Since the turntable 45 is provided with a plurality of contact ridges 451 on the circumference, the roughness of the turntable 45 on the circumference is increased, so that the hand is not easy to slip on the turntable 45 when the torque is applied to the turntable 45.

[0031] In addition, the workbench 1 is provided with a rear collecting groove 11 below the mounting frame 41, and the workbench 1 is provided with a front collecting groove 12 on the front side of the rear collecting groove 11, the front collecting groove 12 is connected with the rear collecting groove 11, and the front collecting groove 12 is inclined from top to bottom and from back to front, and the workbench 1 is provided with a baffle 13 detachably installed at the front collecting groove 12 by means of snaps, magnetic attraction, etc., and in the process of shaping by contact and friction between the grinding block 52 and the outer ring of the brake shoe, the uneven part of the brake shoe will be removed by force grinding, and in this process, the wave-divided friction material will fall off to form debris, so after completing the shaping operation, it is necessary to thoroughly clean the workbench 1 surface to prevent the debris from contaminating other parts or affecting subsequent processes, and when the debris falls on the workbench 1 At the same time, since the front collecting trough 12 is connected with the rear collecting trough 11 and the front collecting trough 12 is inclined, the debris falling into the rear collecting trough 11 can fall and accumulate along the inclined direction of the front collecting trough 12 due to its own gravity, so that the operator can collect the debris more conveniently. Because the workbench 1 is located in the front collecting trough 12 and is detachably equipped with a baffle 13, the debris falling and accumulating in the front collecting trough 12 will be restricted by the baffle 13 and will not fall forward out of the workbench 1. When the baffle 13 is removed from the workbench 1 and contacts the front collecting trough 12, the debris in the front collecting trough 12 can be collected and cleaned.

[0032] Among them, the baffle 13 is rotatably installed on the workbench 1, and the left and right sides of the baffle 13 are fixedly installed with a disassembly plate 131 by means of integral molding, etc., and each of the disassembly plates 131 is provided with a mounting block 1311 protruding rearward, and each of the mounting blocks 1311 is interference fit with the workbench 1. Since the mounting blocks 1311 on the disassembly plates 131 on the left and right sides of the baffle 13 are interference fit with the workbench 1, after the mounting plate is installed on the workbench 1, the disassembly plate 131 is stably connected to the workbench 1 in the absence of external force, so that the baffle 13 is stably located in the front collecting trough 12, so that the debris accumulated in the front collecting trough 12 can be blocked by the baffle 13 and will not fall forward out of the workbench 1.

[0033] Preferably, each mounting block 1311 is recessed inwardly and provided with a matching slot 13111, and the workbench 1 is provided with a mounting slot 14 corresponding to each mounting block 1311, and the workbench 1 is provided with a matching block 141 protruding from each mounting slot 14. Since each mounting block 1311 has a matching slot 13111, when each mounting block 1311 is installed into the corresponding mounting slot 14 on the workbench 1, the portion located at the rear side of each matching slot 13111 needs to forcibly pass over the corresponding matching block 141 to achieve the matching block 14. 1 cooperates with the matching slot 13111, thereby realizing the connection between the disassembly plates 131 on the left and right sides of the baffle 13 and the workbench 1, and realizing that the baffle 13 is stably located at the front side of the front matching slot 413. When the baffle 13 needs to be flipped downward, each disassembly plate 131 is applied with a forward movement so that the corresponding installation plug block 1311 is applied with a forward force. At this time, the matching slot 13111 can forcibly pass over the corresponding matching plug block 141 forward to realize the separation of the installation plug block 1311 and the corresponding installation slot 14, thereby separating the disassembly plate 131 from the workbench 1.

[0034] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A drum brake pad shaping tool, comprising a workbench, a mounting seat rotatably mounted on the workbench, a driving assembly for driving the mounting seat to rotate, a supporting assembly located on the mounting seat, and a grinding assembly located on the workbench and on the rotation track of the supporting assembly, characterized in that: The support assembly includes a mounting frame, a screw rod, a left slider matched with the screw rod thread, and a right slider for the screw rod to rotate. The right slider is fixedly mounted on the mounting frame, the screw rod is located on the right slider and a first bevel gear is fixedly mounted thereon, a second bevel gear meshing with the first bevel gear is rotatably mounted on the mounting frame, and a turntable is fixedly mounted below the second bevel gear.

2. The drum brake pad shaping tool according to claim 1, characterized in that: The right sliding block comprises a right vertical plate, and the right end surface of the right vertical plate abuts against the first bevel gear.

3. A drum brake pad shaping tool according to claim 1 or 2, characterized in that: The left slider includes a left vertical plate and a left matching plate, wherein the left matching plate is located above the left vertical plate, and the width of the left matching plate is smaller than the width of the left vertical plate. The mounting frame includes a matching groove for the left matching plate to slide left and right and a limiting groove for the left vertical plate to slide.

4. The drum brake pad shaping tool according to claim 3, characterized in that: The rotating disk is provided with a plurality of contact convex strips at intervals along the circumferential direction, and the mounting frame is provided with a contact groove at the front side of the rotating disk.

5. The drum brake pad shaping tool according to claim 1, characterized in that: The workbench is provided with a rear collecting trough below the installation frame, and the workbench is provided with a front collecting trough in front of the rear collecting trough. The front collecting trough and the rear collecting trough are connected to each other, and the front collecting trough is inclined from top to bottom and from back to front, and the workbench is provided with a detachable baffle at the front collecting trough.

6. The drum brake pad shaping tool according to claim 5, characterized in that: The baffle is rotatably mounted on the workbench, and disassembly plates are fixedly mounted on both left and right sides of the baffle, and each of the disassembly plates is provided with a mounting plug protruding backwards, and each of the mounting plug is interference-fitted with the workbench.

7. A drum brake pad shaping tool according to claim 6, characterized in that: Each installation plug block is recessed inwardly and provided with a matching slot, and the workbench is provided with an installation slot corresponding to each installation plug block, and the workbench is located in each installation slot and is provided with a matching plug block protruding therein.

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