Powder metallurgy sprocket tooth strength verification device

Abstract

The utility model relates to the technical field of chain wheels, in particular to a powder metallurgy chain wheel tooth strength verification device. Comprising a bottom plate, a vertical plate, a workpiece positioning assembly and a positioning adjusting assembly, the bottom plate is of a rectangular plate structure, the vertical plate is vertically arranged on the bottom plate, a rectangular notch is formed in one corner of the top of the vertical plate, the workpiece positioning assembly is arranged on one side face of the vertical plate, and a fixing block is arranged at the corner, away from the rectangular notch, of the top of the vertical plate; a movable screw penetrates through the fixing block, one end, close to the rectangular notch, of the movable screw is connected with a positioning adjusting assembly, the positioning adjusting assembly is connected with a pressing strip guide block, and a pressing strip is arranged on the pressing strip guide block. The device is easy to manufacture and high in universality, can be operated on any performance testing machine, and is suitable for switching use of various chain wheels. The device is mainly applied to the aspect of verifying the tooth strength of the powder metallurgy chain wheel.

Description

Technical Field

[0001] The utility model relates to the technical field of sprockets, and more specifically, to a device for verifying the tooth strength of a powder metallurgy sprocket. Background Art

[0002] With the development of the automotive industry, the performance requirements of vehicles are getting higher and higher. Powder metallurgy technology has been popularized in the automotive manufacturing industry. However, due to the multi-void characteristics of powder metallurgy parts, the market pays more attention to the strength comparison between powder metallurgy sprocket products and cast sprocket products.

[0003] As a key component in the transmission system, the performance of the sprocket is directly related to the power transmission efficiency and stability of the vehicle. During use, if the sprocket has failure phenomena such as tooth breakage, tooth chipping, and tooth cracking, it will not only cause the failure of the transmission system, but may also lead to serious traffic accidents, threatening the safety of passengers and road users. Therefore, the single-tooth strength of the sprocket has become one of the important indicators for measuring its overall quality, service life, and evaluating the safety performance of the vehicle. Summary of the Utility Model

[0004] To overcome the deficiencies in the above-mentioned prior art, the utility model provides a device for verifying the tooth strength of a powder metallurgy sprocket. This device is simple to manufacture, has strong versatility, can be operated on any performance testing machine, and is suitable for the switching and use of multiple types of sprockets.

[0005] To solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0006] A device for verifying the tooth strength of a powder metallurgy sprocket includes a bottom plate, a vertical plate, a workpiece positioning component, and a positioning adjustment component. The bottom plate adopts a rectangular plate structure. The vertical plate is vertically arranged on the bottom plate. A rectangular notch is opened at one corner of the top of the vertical plate. The workpiece positioning component is arranged on one side surface of the vertical plate. A fixing block is arranged at one corner of the top of the vertical plate far from the rectangular notch. A moving screw is penetrated through the fixing block. One end of the moving screw close to the rectangular notch is connected with a positioning adjustment component. The positioning adjustment component is connected with a pressing strip guide block, and a pressing strip is arranged on the pressing strip guide block.

[0007] The workpiece positioning component includes a tooth-shaped fixing plate and a center positioning block. The tooth-shaped fixing plate is fixed on the side surface of the vertical plate by bolts. A cut matching the rectangular notch is opened on the tooth-shaped fixing plate. Tooth grooves matching the sprocket teeth are arranged inside the tooth-shaped fixing plate. A sprocket positioning screw is arranged at the center position of the tooth-shaped fixing plate. The center positioning block is threadedly connected to the sprocket positioning screw.

[0008] The positioning and adjusting assembly includes a longitudinal moving block and a transverse moving block. The longitudinal moving block is slidably arranged on the upper edge of the vertical plate. A T-shaped sliding groove is arranged on the longitudinal moving block. A sliding block matching the T-shaped sliding groove is arranged at the bottom of the transverse moving block. The transverse moving block is slidably arranged on the longitudinal moving block. The bead guiding block is arranged on the transverse moving block.

[0009] A strip-shaped groove is penetrated through the transverse moving block. A positioning bolt is arranged in the strip-shaped groove. The bottom of the positioning bolt is fixedly arranged on the longitudinal moving block.

[0010] A limiting nut is threadedly connected to the moving screw rod between the fixed block and the longitudinal moving block. A locking nut is threadedly connected to one end of the moving screw rod extending out of the fixed block.

[0011] A sprocket tooth inspection groove is arranged at the bottom of the bead.

[0012] A slide rail is arranged at the top of the vertical plate. The longitudinal moving block is slidably arranged on the slide rail.

[0013] Positioning holes are arranged at the four corners of the bottom plate.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] By rotating the moving bolt, due to the locking of the nut, during the process of screwing the moving bolt in or out, the longitudinal moving block is pulled to move, realizing the longitudinal movement of the position of the bead. At the same time, the fastening bolt on the transverse moving block can be loosened to finely adjust the transverse moving block, achieving the purpose of finely adjusting the position of the bead. When the pressing end of the bead reaches the predetermined position, the fastening bolt of the transverse moving block and the limiting nut for locking the moving screw rod are respectively tightened to ensure that the position of the bead no longer moves. At the same time, another function of this design is that the locking nut can not be tightened, leaving a certain distance between it and the fixed block, realizing the purpose that the longitudinal moving block can move each time during the test, that is, the pressing end of the bead first avoids the top interference teeth and then presses downward on the sprocket teeth to be measured. By pressing the upper plane of the bead by the testing press to make it move downward, the tooth part is thus broken, and the purpose of detecting the crushing force value is achieved through the instrument or program display of the equipped device.

[0016] This device can make different tooth type positioning plates for the tooth types of different products, realizing the extended application of different product parts. Only the tooth type positioning plate and the center positioning block need to be replaced, and the rest of the parts are used as common parts without repeated manufacturing. Therefore, the cost is low, the manufacturing is simple, the switching efficiency is fast, and the detection needs of more specifications of products are met. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the present utility model;

[0018] Figure 2 This is the front view of the present utility model;

[0019] Figure 3 This is the left view of the present utility model;

[0020] Figure 4 This is the right view of the present utility model;

[0021] Figure 5 This is the top view of the present utility model;

[0022] In the figure: 1 is the bottom plate, 2 is the vertical plate, 3 is the toothed fixing plate, 4 is the center positioning block, 5 is the fixing block, 6 is the moving screw, 7 is the locking nut, 8 is the limiting nut, 9 is the longitudinal moving block, 10 is the transverse moving block, 11 is the positioning bolt, 12 is the pressing strip, 13 is the pressing strip guiding block, and 14 is the workpiece. Specific embodiments

[0023] In order to more clearly understand the above objects, features and advantages of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0024] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present utility model is not limited by the specific embodiments disclosed below.

[0025] As Figures 1 to 5 shown, a powder metallurgy sprocket tooth strength verification device includes a bottom plate 1, a vertical plate 2, a workpiece positioning component and a positioning adjustment component. The bottom plate 1 adopts a rectangular plate structure. The vertical plate 2 is vertically arranged on the bottom plate 1. A rectangular notch is opened at one corner of the top of the vertical plate 2. The workpiece positioning component is arranged on one side surface of the vertical plate 2. A fixing block is arranged at one corner of the top of the vertical plate 2 away from the rectangular notch. A moving screw 6 penetrates through the fixing block 5. One end of the moving screw 6 close to the rectangular notch is connected with a positioning adjustment component. The positioning adjustment component is connected with a pressing strip guiding block 13. A pressing strip 12 is arranged on the pressing strip guiding block 13. The pressing strip guiding block 13 is of an L-shaped structure, and a rectangular through hole is reserved at the long end for guiding the pressing strip 12.

[0026] Preferably, the workpiece positioning assembly includes a toothed fixing plate 3 and a center positioning block 4. The toothed fixing plate 3 is fixed to the side of the vertical plate 2 by bolts. A notch matching the rectangular notch is provided on the toothed fixing plate 3 to reserve a moving space for the pressing strip 12. A tooth groove matching the sprocket teeth is provided inside the toothed fixing plate 3. A sprocket positioning screw is provided at the center position of the toothed fixing plate 3. The center positioning block 4 is threadedly connected to the sprocket positioning screw. There is a circle of threaded holes on the end face of the vertical plate 2 (the number or the number of circles of the threaded holes can also be appropriately increased) for installing the toothed fixing plate 3. The thickness of the toothed fixing plate 3 can be freely made according to the height of the product, and the inner cavity is made into an imitation tooth shape, so that the strength test can be carried out on any tooth shape of the product. After the sprocket is placed on the toothed fixing plate 3, the center positioning block 4 is installed to fix the sprocket.

[0027] Preferably, the positioning and adjusting assembly includes a longitudinal moving block 9 and a transverse moving block 10. The longitudinal moving block 9 is slidably arranged on the upper edge of the vertical plate 2. A T-shaped chute is provided on the longitudinal moving block 9. A slider matching the T-shaped chute is provided at the bottom of the transverse moving block 10. The transverse moving block 10 is slidably arranged on the longitudinal moving block 9. A pressing strip guide block 13 is provided on the transverse moving block 10.

[0028] Preferably, a strip-shaped groove is provided through the transverse moving block 10. A positioning bolt 11 is arranged in the strip-shaped groove. The bottom of the positioning bolt 11 is fixedly arranged on the longitudinal moving block 9. The transverse moving block 10 can move parallel on the longitudinal moving block 9. The position of the transverse moving block 10 can be fixed and positioned through the positioning bolt 11.

[0029] Preferably, a limiting nut 8 is threadedly connected to the moving screw 6 between the fixing block 5 and the longitudinal moving block 9. A locking nut 7 is threadedly connected to the end of the moving screw 6 extending outside the fixing block 5.

[0030] Preferably, a sprocket tooth inspection groove is provided at the bottom of the pressing strip 12.

[0031] Preferably, a slide rail is provided at the top of the vertical plate 2. The longitudinal moving block 9 is slidably arranged on the slide rail.

[0032] Preferably, positioning holes are provided at the four corners of the bottom plate 1.

[0033] In use, first install the appropriate tooth-shaped fixing plate 3 according to the size and model of the sprocket workpiece 14, install the workpiece 14 on the tooth-shaped fixing plate 3, position the workpiece 14 using the central positioning block 4, control the position movement of the moving screw rod 6 to align it with the tooth part of the workpiece. At this time, rotate the locking nut 7 and the limiting nut 8 towards the fixed block 5 to fix the position of the longitudinal moving block 9, translate the position of the transverse fixed block 10, and move the height of the pressing strip 12 until the pressing strip 12 hooks the tooth part of the workpiece 14. Press the upper plane of the pressing strip 12 through the test press to make it move downward, thereby breaking off the tooth part of the workpiece 14, and achieve the purpose of detecting the crushing force value through the display of the instrument or program of the equipped device.

[0034] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present invention, and all such changes should be included within the protection scope of the present invention.

Claims

1. A powder metallurgy sprocket tooth strength verification device, characterized in that: The invention comprises a bottom plate (1), a vertical plate (2), a workpiece positioning assembly and a positioning adjustment assembly, wherein the bottom plate (1) adopts a rectangular plate structure, the vertical plate (2) is vertically arranged on the bottom plate (1), a rectangular notch is provided at a corner of the top of the vertical plate (2), the workpiece positioning assembly is arranged on a side surface of the vertical plate (2), a fixed block is provided at a corner of the top of the vertical plate (2) away from the rectangular notch, a movable screw rod (6) is provided through the fixed block (5), the end of the movable screw rod (6) close to the rectangular notch is connected to the positioning adjustment assembly, the positioning adjustment assembly is connected to a layering strip guide block (13), and a layering strip (12) is provided on the layering strip guide block (13).

2. A powder metallurgy sprocket tooth strength verification device according to claim 1, characterized in that: The workpiece positioning assembly comprises a toothed fixing plate (3) and a center positioning block (4); the toothed fixing plate (3) is fixed to the side of the vertical plate (2) by means of bolts; a notch matching the rectangular notch is provided on the toothed fixing plate (3); a tooth groove matching the sprocket teeth is provided inside the toothed fixing plate (3); a sprocket positioning screw is provided at the center of the toothed fixing plate (3); and the center positioning block (4) is threadedly connected to the sprocket positioning screw.

3. A powder metallurgy sprocket tooth strength verification device according to claim 1, characterized in that: The positioning and adjustment assembly comprises a longitudinal moving block (9) and a transverse moving block (10); the longitudinal moving block (9) is slidably arranged on the upper edge of the vertical plate (2); a T-shaped sliding groove is arranged on the longitudinal moving block (9); a sliding block matching the T-shaped sliding groove is arranged at the bottom of the transverse moving block (10); the transverse moving block (10) is slidably arranged on the longitudinal moving block (9); and the pressure strip guide block (13) is arranged on the transverse moving block (10).

4. A powder metallurgy sprocket tooth strength verification device according to claim 3, characterized in that: The transverse moving block (10) is provided with a strip groove extending therethrough, a positioning bolt (11) is provided in the strip groove, and the bottom of the positioning bolt (11) is fixedly provided on the longitudinal moving block (9).

5. A powder metallurgy sprocket tooth strength verification device according to claim 3, characterized in that: A limiting nut (8) is threadedly connected to the movable screw rod (6) between the fixed block (5) and the longitudinal movable block (9), and a locking nut (7) is threadedly connected to one end of the movable screw rod (6) extending outside the fixed block (5).

6. A powder metallurgy sprocket tooth strength verification device according to claim 1, characterized in that: A sprocket tooth inspection groove is provided at the bottom of the pressure strip (12).

7. A powder metallurgy sprocket tooth strength verification device according to claim 3, characterized in that: A slide rail is arranged on the top of the vertical plate (2), and the longitudinal moving block (9) is slidably arranged on the slide rail.

8. The powder metallurgy sprocket tooth strength verification device according to claim 1, characterized in that: Positioning holes are provided at the four corners of the bottom plate (1).

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