Positioning and clamping device for machining of self-adjusting arm shell

Abstract

The utility model discloses a self-adjusting arm shell machining positioning and clamping device which comprises a base plate. The supporting table is installed on the base plate through a connecting disc fixed to the bottom of the supporting table, and a positioning plate matched with a cover plate installation groove of the self-adjusting arm shell is installed on the supporting table; the positioning mandrel is arranged on one side of the supporting table and is matched with a connecting hole of the self-adjusting arm shell so as to position the connecting hole; and the three pressing plates are distributed on the periphery of the supporting table and are arranged in a triangular shape so as to press the mounting part. According to the positioning and clamping device for machining of the self-adjusting arm shell, the self-adjusting arm shell is horizontally limited through cooperation of the supporting table, the positioning plate and the positioning mandrel, the self-adjusting arm shell is vertically limited through cooperation of the pressing plate, the supporting table and the base plate, and therefore the self-adjusting arm shell is clamped and positioned; and it is guaranteed that displacement is avoided in the machining process, and the machining precision is improved.

Description

Technical Field

[0001] The utility model relates to a machining auxiliary device for a self-adjusting arm shell, in particular to a machining positioning clamping device for a self-adjusting arm shell. Background Art

[0002] The self-adjusting arm, also known as the brake clearance automatic adjustment wall, consists of a housing, worm gear, clutch and other parts. It can automatically and timely adjust the gap increased by wear, so that the brake clearance is always kept within the design range. It is mainly used in buses, trailers, trucks and other vehicles. The worm gear is installed in the worm gear chamber and worm gear of the housing respectively, so the worm gear chamber and worm gear chamber of the self-adjusting arm housing need to be processed, generally using a CNC machining center to process them.

[0003] Due to the irregular shape of the self-adjusting arm shell, it cannot be firmly fixed on the workbench of the machining center. It may shake or even shift during the machining process, affecting the machining quality. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects and shortcomings of the above-mentioned background technology and to provide a self-adjusting arm shell machining positioning clamping device which can effectively fix the self-adjusting arm shell to prevent it from shaking or even shifting during the machining process of the self-adjusting arm shell.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a self-adjusting arm shell machining positioning clamping device, which includes: a base plate; a support table, which is installed on the base plate through a connecting plate fixed at the bottom thereof, and a positioning plate adapted to the cover plate mounting groove of the self-adjusting arm shell is installed on the support table; a positioning mandrel, which is arranged on one side of the support table and adapted to the connecting hole of the self-adjusting arm shell to position the connecting hole; a clamping plate, three clamping plates are distributed around the support table and arranged in a triangle to clamp the mounting part. The above-mentioned technical scheme horizontally limits the self-adjusting arm shell through the cooperation of the support table, the positioning plate and the positioning mandrel, and vertically limits the self-adjusting arm shell through the cooperation of the pressure plate, the support table and the pad, thereby clamping and positioning the self-adjusting arm shell to ensure that it will not be displaced during the processing and improve the processing accuracy.

[0006] Furthermore, a mounting hole is provided at the center of the positioning plate, a fixing column is installed in the mounting hole, and the fixing column is connected to the support platform by fixing screws. This structure allows the positioning plate and the support platform to be detachably connected, which is convenient for replacing the positioning plate as needed, improves the versatility of the positioning clamping device, reduces the cost of manufacturing positioning clamping devices suitable for different models of self-adjusting arm housings, and further reduces the processing cost of the self-adjusting arm, thereby improving economic benefits.

[0007] Furthermore, a fixing sleeve coaxially arranged with the mounting hole is arranged on the positioning plate, the fixing sleeve is fixedly connected to the positioning plate, and the fixing column is tightly matched with the fixing sleeve. The fixing sleeve is arranged to improve the stability of the connection between the positioning plate and the fixing column, thereby ensuring the working stability and durability.

[0008] Furthermore, the positioning mandrel is installed on the base plate through a pad, and the positioning mandrel is detachably connected to the pad. Such a design can adjust the position of the positioning mandrel as needed to improve the versatility of the utility model.

[0009] Furthermore, the pressing plate is installed on the corner cylinder.

[0010] The self-adjusting arm housing machining positioning clamping device of the above technical solution also includes: a connecting piece, which is provided at both ends of the base plate, and the base plate is rotatably mounted on the workbench of the machine tool through the connecting piece and the mounting seat. The angle of the base plate can be adjusted as needed to improve the convenience of use.

[0011] In a further embodiment, mounting grooves are respectively provided at both ends of the bottom surface of the substrate, and the connecting member comprises:

[0012] An L-shaped connecting plate, the connecting plate is installed in the installation groove, and the midline of the projection of the connecting plate on the horizontal plane coincides with the midline of the projection of the base plate on the horizontal plane; and a connecting shaft, a connecting shaft is fixed to the middle part of the outer side of the connecting plate, and the axis of the connecting shaft coincides with the midline of the connecting plate.

[0013] In a further improvement, the mounting seat is a dividing head chuck, and the connecting shaft is clamped with the dividing head chuck.

[0014] Compared with the prior art, the utility model has the following technical effects:

[0015] 1. The utility model limits the self-adjusting arm housing horizontally through the cooperation of the support platform, the positioning plate and the positioning mandrel, and limits the self-adjusting arm housing vertically through the cooperation of the pressure plate, the support platform and the pad, so as to clamp and position the self-adjusting arm housing, ensure that it will not be displaced during the processing, and improve the machining accuracy of the housing;

[0016] 2. The positioning mandrel and the pad shell of the utility model are detachably connected, which makes it easy to adjust the distance between the mandrel and the positioning plate as needed, so that it is suitable for the processing of different types of self-adjusting shells, improving its versatility. A set of positioning clamping devices is suitable for the processing of multiple types of self-adjusting arm shells, reducing the cost of manufacturing the positioning clamping devices, and thereby reducing the processing cost of the self-adjusting arms. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which constitute a part of this specification and are used to further understand the present utility model, illustrate preferred embodiments of the present utility model and are used together with the specification to illustrate the principles of the present utility model. In the drawings:

[0018] Figure 1 It is a schematic structural diagram of the self-adjusting arm housing involved in the utility model;

[0019] Figure 2 This is one of the schematic structural diagrams of the machining positioning clamping device of the self-adjusting arm housing of the utility model;

[0020] Figure 3 yes Figure 2 A schematic diagram of a top view structure;

[0021] Figure 4 This is the second schematic structural diagram of the machining positioning clamping device of the self-adjusting arm housing of the utility model;

[0022] Figure 5 yes Figure 4 Schematic diagram of the main structure.

[0023] Numbers in the figure: Figure 1 In the figure, 100, self-adjusting arm housing, 110, mounting portion, 120, connecting portion, 130, cavity, 140, cover plate mounting groove, 150, worm gear chamber, 160, worm gear chamber, 170, connecting hole;

[0024] Figures 2 to 3 Among them, 1. base plate, 2. positioning plate, 3. connecting plate, 4. positioning mandrel, 5. clamping screw, 501, screw head, 6. countersunk hole, 7. pad, 8. pressure plate, 9. angle cylinder, 10. fixing column, 11. support table, 12. fixing sleeve, 13. connecting plate, 14. mounting seat, 15. mounting groove. DETAILED DESCRIPTION

[0025] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0026] The present invention is a self-adjusting arm housing machining positioning clamping device, which is used to position and clamp the self-adjusting arm housing to ensure the machining accuracy of the worm gear chamber and the worm shaft chamber of the self-adjusting arm housing. The structure of the self-adjusting arm housing is as follows: Figure 1 As shown, the self-adjusting arm housing 100 includes a mounting portion 110 and a connecting portion 120 , the mounting portion 110 has a cavity 130 , a worm gear chamber 150 and a worm shaft chamber 160 are provided in the cavity 130 , a cover plate mounting groove 140 for mounting a cover plate is provided at one end of the cavity 130 , and the connecting portion 120 has a connecting hole 170 .

[0027] Please refer to the attached Figures 2 to 5The self-adjusting arm housing machining positioning clamping device of the preferred embodiment of the utility model is described in detail:

[0028] Example: Figure 2 and 3 The self-adjusting arm housing machining positioning clamping device shown includes a base plate 1, a support platform 11 arranged on the base plate 1, a positioning mandrel 4 and a pressure plate 8. The support platform 11 is installed on the base plate 1 through a connecting plate 3 fixed at the bottom thereof, and the connecting plate 3 is installed on the base plate 1 through a fixing bolt. A positioning plate 2 adapted to the cover plate mounting groove 140 of the self-adjusting arm housing is installed on the support platform 11. The positioning mandrel 4 is arranged on one side of the support platform 11. The positioning mandrel 4 is adapted to the connecting hole 170 of the self-adjusting arm housing to position the connecting hole 170. Three pressure plates 8 are distributed around the support platform 11 and arranged in a triangular shape to press the mounting portion 110. When in use, the mounting portion 110 is placed on the support platform 11, the positioning plate 2 is located in the cover plate mounting groove 140, the connecting hole 170 is sleeved on the positioning mandrel 4, and the horizontal direction is limited. The pressure plate 8 limits the adjustment arm housing 100 in the vertical direction. The pressing plate 8 of this embodiment is installed on the angular cylinder. When in use, the base plate 1 is installed on the workbench of the CNC machining center by screwing, and the mounting part 110 of the self-adjusting arm shell is placed on the support platform 11. At the same time, the connecting hole 170 is mounted on the positioning core shaft 4, and then the angular cylinder is driven to make the pressing plate 8 turn to press the mounting part 110 of the self-adjusting arm shell to limit it. The machining positioning and clamping device of the self-adjusting arm shell limits the self-adjusting arm shell horizontally through the cooperation of the support platform 11, the positioning plate 2 and the positioning core shaft 4, and limits the self-adjusting arm shell vertically through the cooperation of the pressing plate, the support platform 11 and the pad 7, so as to clamp and position the self-adjusting arm shell to ensure that it will not be displaced during the processing, thereby improving the processing accuracy.

[0029] In this embodiment, a mounting hole is opened at the center of the positioning plate 2, and a fixing column 10 is installed in the mounting hole. The fixing column 10 is connected to the support platform 11 by a fixing screw. The detachable connection method of the screw is adopted. The positioning plate 2 can be replaced as needed to be suitable for the processing of different types of self-adjusting arm shells, thereby improving its versatility and reducing the processing cost of the self-adjusting arm.

[0030] In order to improve the connection stability between the positioning plate 2 and the fixing column 10 and ensure the stability and durability of its use, as Figure 1 As shown, a fixing sleeve 12 coaxially arranged with the mounting hole is provided on the positioning plate 2, and the fixing column 10 is tightly matched with the fixing sleeve 12. When the positioning plate 2 needs to be replaced, the fixing sleeve 12 and the fixing column 10 are replaced together.

[0031] In this embodiment, the positioning mandrel 4 is installed on the base plate 1 through the pad 7, and the pad 7 is fixedly installed on the base plate 1 through screws. The positioning mandrel 4 is detachably connected to the pad 7, and the pad 7 is connected to the pad 7 through the positioning mandrel 4 in the following manner: the positioning mandrel 4 is installed on the pad 7 through the clamping screw 5, and the clamping screw 5 includes a stud and a screw head 501 that are threadedly connected to the pad 7. The screw head 501 is a cylinder, and the peripheral wall of the cylinder has two oppositely arranged straight portions. The structure of the screw head 501 is designed in this way to facilitate hand-screwing of the screw, thereby facilitating installation and removal. A countersunk hole 6 connected to a tightening tool is set at the top center of the screw head 501, and the countersunk hole 6 is a hexagonal hole or a plum blossom hole. When installing, the clamping screw 5 is connected to the pad 7 by hand-screwing, and then tightened by a tool such as a screwdriver. A plurality of fixing screw holes (not shown in the figure) are set on the pad 7 to adjust the position of the positioning mandrel 4, so as to meet the machining of different models of adjustment arm housings. The fixing screw hole is arranged near the positioning mandrel 4 and around the positioning mandrel 4. During implementation, two sets of positioning plates 2, positioning mandrels 4 and pressing plates 8 for vertical positioning can be provided to clamp two self-adjusting arm housings on the base plate 1 at the same time, and the processing of the two self-adjusting arm housings can be completed at the same time, thereby improving the processing efficiency and the point utilization rate of the positioning clamping device.

[0032] As other embodiments of the present invention, Figure 4 and 5 As shown, this embodiment adds a connecting piece and a mounting seat on the basis of the above embodiment, so as to make the positioning and clamping device more convenient to use. The self-adjusting arm shell machining positioning and clamping device of this embodiment also includes a connecting piece, and connecting pieces are provided at both ends of the substrate 1. The substrate 1 is rotatably mounted on the workbench of the machine tool through the connecting piece and the mounting seat 14, so that the angle of the substrate 1 can be adjusted according to the processing needs, so as to facilitate use and improve its practicality.

[0033] Mounting grooves 15 are provided at both ends of the bottom surface of the base plate 1, and the connecting parts include an L-shaped connecting plate 13 and a connecting shaft (not shown in the figure). The horizontal part of the connecting plate 13 is installed in the mounting groove 15, and the vertical part is located at both ends of the base plate 1. The center line of the projection of the connecting plate 13 on the horizontal plane coincides with the center line of the projection of the base plate 1 on the horizontal plane. A connecting shaft is fixed to the middle part of the outer side of the connecting plate 13, and the axis of the connecting shaft coincides with the center line of the connecting plate 13. The mounting seat 14 is a dividing head chuck, and the connecting shaft is clamped with the dividing head chuck. The upper side of the horizontal part of the connecting plate 13 is in contact with the ground of the mounting groove 15, and the base plate 1 is connected to the horizontal part of the connecting plate 13 by a plurality of countersunk screws. When in use, the base is tilted outward by the dividing head chuck to facilitate clamping and removing the adjustment arm housing, thereby improving the convenience of use.

[0034] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A self-adjusting arm housing machining positioning clamping device, characterized in that: include: substrate; A support platform is mounted on the base plate via a connection plate fixed at the bottom thereof, and a positioning plate adapted to fit the cover plate mounting groove of the self-adjusting arm housing is mounted on the support platform; A positioning mandrel, the positioning mandrel is arranged on one side of the support platform and is matched with the connecting hole of the self-adjusting arm housing to position the connecting hole; The three clamping plates are distributed around the support platform and arranged in a triangle to clamp the mounting portion.

2. The self-adjusting arm housing machining positioning clamping device according to claim 1, characterized in that: A mounting hole is provided at the center of the positioning plate, a fixing column is installed in the mounting hole, and the fixing column is connected to the support platform via fixing screws.

3. The self-adjusting arm housing machining positioning clamping device according to claim 2, characterized in that: A fixing sleeve coaxially arranged with the mounting hole is arranged on the positioning plate, and the fixing column is tightly matched with the fixing sleeve.

4. The self-adjusting arm housing machining positioning clamping device according to claim 1, characterized in that: The positioning mandrel is installed on the base plate through a pad, and the positioning mandrel is detachably connected to the pad.

5. The self-adjusting arm housing machining positioning clamping device according to claim 4, characterized in that: The pressing plate is installed on the corner cylinder.

6. The self-adjusting arm housing machining positioning clamping device according to any one of claims 1 to 5, characterized in that: The self-adjusting arm housing machining positioning clamping device also includes: Connecting pieces are provided at both ends of the base plate, and the base plate is rotatably mounted on the working table of the machine tool through the connecting pieces and the mounting seat.

7. The self-adjusting arm housing machining positioning clamping device according to claim 6, characterized in that: Mounting grooves are respectively provided at both ends of the bottom surface of the substrate, and the connecting member comprises: An L-shaped connecting plate, the connecting plate being installed in the installation groove, the center line of the projection of the connecting plate on the horizontal plane coincides with the center line of the projection of the base plate on the horizontal plane; and A connecting shaft is fixed to the middle part of the outer side of the connecting plate, and the axis of the connecting shaft coincides with the center line of the connecting plate.

8. The self-adjusting arm housing machining positioning clamping device according to claim 7, characterized in that: The mounting seat is a dividing head chuck, and the connecting shaft is clamped with the dividing head chuck.

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