Brake drum and HUB type pressing bolt lower die tool

Abstract

The utility model relates to the technical field of brake drum assembly, in particular to a brake drum and HUB type pressing bolt lower die tool which enables a hub bolt to be always kept in a vertical state in the pressing process, prevents the hub bolt or a brake drum body from being damaged in the pressing process due to the fact that the hub bolt is inclined, and is convenient to use and high in efficiency. The reliability and the practicability are high; comprising a baseplate; the tool further comprises a positioning mandrel and a limiting mechanism, the positioning mandrel is fixedly installed at the upper end of the bottom plate, and the limiting mechanism is installed at the upper end of the bottom plate and used for limiting a hub bolt.

Description

Technical Field

[0001] The utility model relates to the technical field of brake drum assembly, in particular to a brake drum and a HUB type pressure bolt lower die tooling. Background Art

[0002] During the wheel assembly process, the connection between the rim and the brake drum is a key step. Because the rim is to be installed on the outside of the brake drum, the hub bolts must be pre-pressed into the mounting holes of the brake drum. Currently, when press-fitting the hub bolts to the brake drum, the bolts are first placed in the mounting holes of the brake drum, and then pressure is applied to the hub bolts by an external pressing mechanism, so that the hub bolts are pressed into the brake drum. However, since the hub bolts cannot be kept in a vertical position when pressed into the mounting holes during the process of pressing the bolts into the brake drum, if the hub bolts become skewed, they can easily be damaged during the pressing process, or the mounting holes on the brake drum body can be crushed by the hub bolts, resulting in defective products or even scrapped workpieces, affecting assembly efficiency. Therefore, a tooling is needed that can ensure that the hub bolts are always in a vertical position during the pressing process. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a brake drum and HUB type pressing bolt lower die tooling which can keep the wheel hub bolt in a vertical state at all times during the pressing process, thereby preventing damage to the wheel hub bolt or the brake drum body during the pressing process due to the skewness of the wheel hub bolt. The utility model is easy to use and has high reliability and practicality.

[0004] The brake drum and HUB type pressure bolt lower die tooling of the present invention comprises a base plate; further comprising a positioning mandrel and a limiting mechanism, wherein the positioning mandrel is fixedly mounted on the upper end of the base plate, the limiting mechanism is mounted on the upper end of the base plate, and the limiting mechanism is used to limit the wheel hub bolts; when the wheel hub bolts are press-fitted on the brake drum body, the brake drum body is first placed on the upper end of the limiting mechanism, and then a worker inserts a plurality of wheel hub bolts into the plurality of mounting holes of the brake drum body respectively, and makes the lower parts of the plurality of wheel hub bolts all located in the limiting mechanism, and the wheel hub bolts are positioned and limited by the limiting mechanism so that the lower parts of the wheel hub bolts are in a vertical state, and then the plurality of wheel hub bolts are pressed by an external pressing mechanism so that the plurality of wheel hub bolts are press-fitted into the plurality of mounting holes on the brake drum body; since the lower parts of the wheel hub bolts are limited by the limiting mechanism during the process of press-fitting the wheel hub bolts on the brake drum body, the wheel hub bolts can always be kept in a vertical state when being pressed, thereby preventing the wheel hub bolts or the brake drum body from being damaged during the press-fitting process due to the skewness of the wheel hub bolts, and the utility model is convenient to use and has high reliability and practicality.

[0005] Preferably, the limiting mechanism includes an upper positioning plate, a lower positioning plate, multiple groups of movable positioning sleeves and multiple groups of elastic mechanisms. The lower positioning plate is fixedly mounted on the upper end of the bottom plate, and the upper positioning plate is fixedly mounted on the upper end of the lower positioning plate. Both the upper positioning plate and the lower positioning plate are provided with multiple groups of positioning holes that are connected to each other from top to bottom. The multiple groups of positioning holes on the upper positioning plate are coaxial with the multiple groups of positioning holes on the lower positioning plate respectively. The multiple groups of movable positioning sleeves are slid up and down in the multiple groups of positioning holes of the lower positioning plate respectively. The lower part of the multiple groups of movable positioning sleeves is fixedly mounted on the positioning core shaft through the elastic mechanism, and the elastic mechanism is elastic. When the wheel hub bolts are pressed on the brake drum body, the brake drum body is placed on the upper positioning plate, and the multiple groups of mounting holes on the brake drum body are aligned with the multiple groups of positioning holes on the upper positioning plate respectively. At the same time, the positioning core shaft is inserted into the lower part of the brake drum body, and the positioning core shaft is loosely matched with the lower part of the positioning core shaft. Then, multiple wheel hub bolts are respectively passed through the multiple groups of mounting holes on the brake drum body, and the lower parts of the multiple wheel hub bolts are respectively passed through the positioning holes of the upper positioning plate and the lower positioning plate, so that the lower parts of the multiple wheel hub bolts are respectively inserted into the multiple groups of movable positioning sleeves. Then, the multiple wheel hub bolts are pressed by an external pressing mechanism so that the upper parts of the multiple wheel hub bolts are press-fitted into the mounting holes of the brake drum body. Since the lower part of the wheel hub bolt is always in the movable positioning sleeve during the process of pressing the wheel hub bolts, the positioning effect of the movable positioning sleeve on the lower part of the wheel hub bolt can ensure that the wheel hub bolt is kept in a vertical state when pressed, which is easy to use and has high reliability.

[0006] Preferably, the elastic mechanism is a spring, the lower end of the spring is fixedly mounted on the base plate, and the movable positioning sleeve is fixedly mounted on the upper end of the spring; through the above arrangement, after the wheel hub bolt is pressed into place in the brake drum body, the brake drum body is removed from the upper positioning plate, and then the movable positioning sleeve can be restored to its initial position under the left and right elastic force of the spring; convenience is improved.

[0007] Preferably, there are multiple positioning core shafts with different specifications, and one of the positioning core shafts is fixed on the base plate by bolts; through the above arrangement, positioning core shafts of different specifications can be replaced on the base plate according to the different specifications of the brake drum body and installed on the base plate, which is easy to use and has few limitations.

[0008] Preferably, the lower positioning plate is fixedly mounted on the upper end of the base plate by means of bolts; the above arrangement facilitates the disassembly and replacement of the lower positioning plate and the base plate.

[0009] Preferably, the upper positioning plate is fixedly mounted on the lower positioning plate by bolts; the above arrangement facilitates the disassembly and replacement of the upper positioning plate and the lower positioning plate.

[0010] Compared with the prior art, the beneficial effects of the present invention are: the wheel hub bolt is always kept in a vertical state during the press-fitting process, thereby preventing damage to the wheel hub bolt or the brake drum body during the press-fitting process due to the skewness of the wheel hub bolt. It is easy to use and has high reliability and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is an axonometric structural diagram of the present utility model;

[0012] Figure 2 It is a schematic cross-sectional structural diagram of the present utility model;

[0013] Figure 3 It is a schematic structural diagram of the brake drum body when assembled on the utility model;

[0014] Figure 4 It is a schematic diagram of the main structure of the brake solid and the rim;

[0015] Figure 5 yes Figure 4 Schematic diagram of the cross-sectional structure of AA.

[0016] Markings in the accompanying drawings: 1. brake drum body; 2. wheel hub bolt; 3. upper positioning plate; 4. lower positioning plate; 5. movable positioning sleeve; 6. spring; 7. positioning core shaft; 8. bottom plate; 9. rim. DETAILED DESCRIPTION

[0017] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0018] It should be noted in advance that the mounting hole on the brake drum body 1 is in a stepped shape. Figure 3 In the middle state, the diameter of the upper hole of the mounting hole on the brake drum body 1 is larger than the diameter of the lower hole. Example

[0019] like Figures 1 to 5The brake drum and HUB type bolt lower die tooling of the present invention includes a base plate 8, a positioning mandrel 7 and a limiting mechanism. The positioning mandrel 7 is fixedly mounted on the upper end of the base plate 8, and the limiting mechanism is mounted on the upper end of the base plate 8. The limiting mechanism is used to limit the wheel hub bolts. When the wheel hub bolts 2 are press-fitted on the brake drum body 1, the brake drum body 1 is first placed on the upper end of the limiting mechanism. Then, the staff inserts multiple wheel hub bolts 2 into multiple mounting holes of the brake drum body 1 respectively, and makes the lower parts of the multiple wheel hub bolts 2 all located in the limiting mechanism. The wheel hub bolts 2 are pressed by the limiting mechanism. The positioning limit is performed so that the lower part of the wheel hub bolt 2 is in a vertical state, and then the multiple wheel hub bolts 2 are pressed by an external pressing mechanism so that the multiple wheel hub bolts 2 are pressed into the multiple mounting holes on the brake drum body 1; since the lower part of the wheel hub bolt 2 is limited by the limiting mechanism during the process of press-fitting the wheel hub bolt 2 on the brake drum body 1, the wheel hub bolt 2 can always be kept in a vertical state when pressed, thereby preventing the wheel hub bolt 2 or the brake drum body 1 from being damaged during the press-fitting process due to the skewness of the wheel hub bolt 2. The method is easy to use and has high reliability and practicality.

[0020] like Figure 1 and Figure 2 The limiting mechanism includes an upper positioning plate 3, a lower positioning plate 4, multiple groups of movable positioning sleeves 5 and multiple groups of elastic mechanisms. The lower positioning plate 4 is fixedly mounted on the upper end of the base plate 8, and the upper positioning plate 3 is fixedly mounted on the upper end of the lower positioning plate 4. Both the upper positioning plate 3 and the lower positioning plate 4 are provided with multiple groups of positioning holes that communicate with each other up and down. The multiple groups of positioning holes on the upper positioning plate 3 are coaxial with the multiple groups of positioning holes on the lower positioning plate 4. The multiple groups of movable positioning sleeves 5 are slid up and down in the multiple groups of positioning holes of the lower positioning plate 4 respectively. The lower part of the multiple groups of movable positioning sleeves 5 is fixedly mounted on the positioning core shaft 7 through an elastic mechanism, and the elastic mechanism is elastic; when the wheel hub bolt 2 is pressed on the brake drum body 1, the brake drum body 1 is placed on the upper positioning plate 3, and the multiple groups of mounting holes on the brake drum body 1 are aligned with the multiple groups of positioning holes on the upper positioning plate 3, respectively. When the wheel hub bolts 2 are pressed, the upper ends of the wheel hub bolts 2 are pressed into the mounting holes of the brake drum body 1. When the wheel hub bolts 2 are pressed, the upper ends of the wheel hub bolts 2 are pressed into the mounting holes of the brake drum body 1. When the wheel hub bolts 2 are pressed, the lower ends of the wheel hub bolts 2 are pressed into the mounting holes of the brake drum body 1. When the wheel hub bolts 2 are pressed, the lower ends of the wheel hub bolts 2 are pressed into the mounting holes of the brake drum body 1. When the wheel hub bolts 2 are pressed, the lower ends of the wheel hub bolts 2 are pressed into the mounting holes of the brake drum body 1. When the wheel hub bolts 2 are pressed, the lower ends of the wheel hub bolts 2 are always in the movable positioning sleeves 5. The positioning effect of the movable positioning sleeves 5 on the lower ends of the wheel hub bolts 2 can ensure that the wheel hub bolts 2 are kept in a vertical state when being pressed. The wheel hub bolts 2 are easy to use and have high reliability.

[0021] like Figure 1 and Figure 2The elastic mechanism is a spring 6, the lower end of the spring 6 is fixedly mounted on the base plate 8, and the movable positioning sleeve 5 is fixedly mounted on the upper end of the spring 6; through the above arrangement, after the wheel hub bolt 2 is pressed into place in the brake drum body 1, the brake drum body 1 is removed from the upper positioning plate 3, and then the movable positioning sleeve 5 is restored to its initial position under the elastic force of the spring 6; convenience is improved.

[0022] There are multiple positioning mandrels 7 with different specifications, and one positioning mandrel 7 is fixedly mounted on the base plate 8 by bolts. The lower positioning plate 4 is fixedly mounted on the upper end of the base plate 8 by bolts, and the upper positioning plate 3 is fixedly mounted on the lower positioning plate 4 by bolts.

[0023] The movable positioning sleeve 5, spring 6 and positioning core shaft 7 of the brake drum and HUB type pressure bolt lower die tooling of the utility model are all purchased on the market. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without the need for technical personnel in this field to make creative labor.

[0024] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A brake drum and HUB type pressure bolt lower die tooling, comprising a bottom plate (8); characterized in that, It also includes a positioning mandrel (7) and a limiting mechanism, wherein the positioning mandrel (7) is fixedly mounted on the upper end of the base plate (8), and the limiting mechanism is mounted on the upper end of the base plate (8), and the limiting mechanism is used to limit the wheel hub bolt; The limiting mechanism comprises an upper positioning plate (3), a lower positioning plate (4), a plurality of groups of movable positioning sleeves (5) and a plurality of groups of elastic mechanisms. The lower positioning plate (4) is fixedly mounted on the upper end of the bottom plate (8). The upper positioning plate (3) is fixedly mounted on the upper end of the lower positioning plate (4). The upper positioning plate (3) and the lower positioning plate (4) are both provided with a plurality of groups of positioning holes communicating with each other from top to bottom. The plurality of groups of positioning holes on the upper positioning plate (3) are respectively coaxial with the plurality of groups of positioning holes on the lower positioning plate (4). The plurality of groups of movable positioning sleeves (5) are respectively slidably mounted in the plurality of groups of positioning holes on the lower positioning plate (4). The lower portion of the plurality of groups of movable positioning sleeves (5) is fixedly mounted on the positioning core shaft (7) through the elastic mechanism. The elastic mechanism has elasticity.

2. A brake drum and HUB type pressure bolt lower die tooling as claimed in claim 1, characterized in that: The elastic mechanism is a spring (6), the lower end of the spring (6) is fixedly mounted on the bottom plate (8), and the movable positioning sleeve (5) is fixedly mounted on the upper end of the spring (6).

3. A brake drum and HUB type pressure bolt lower die tooling as claimed in claim 1, characterized in that: There are multiple positioning core shafts (7), and the specifications of the multiple positioning core shafts (7) are different. One of the positioning core shafts (7) is fixedly mounted on the base plate (8) by means of bolts.

4. A brake drum and HUB type pressure bolt lower die tooling as claimed in claim 2, characterized in that: The lower positioning plate (4) is fixedly mounted on the upper end of the base plate (8) by means of bolts.

5. A brake drum and HUB type pressure bolt lower die tooling as claimed in claim 2, characterized in that: The upper positioning plate (3) is fixedly mounted on the lower positioning plate (4) by means of bolts.

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