Combined jaw special for machining 8-shaped shaft sleeve

Abstract

The utility model discloses a special combined jaw for processing a character shaft sleeve, which comprises two groups of limiting clamps, a driving component is arranged between the two groups of limiting clamps, each limiting clamp comprises a first jaw main body and a second jaw main body, adjacent end surfaces of the first jaw main body and the second jaw main body are respectively provided with at least one row of sawteeth, a clearance is arranged above the sawteeth, and the clearance is arranged above the sawteeth. Arc transition is arranged below the sawteeth, and the sawteeth comprise high teeth and low teeth which are arranged alternately. According to the utility model, the structure is simple, after a product is clamped, the high teeth can be embedded into the product, the clamping force is increased, the low teeth disperse the clamping force and prevent the high teeth from being embedded too much and being not easy to take, the stress area of a blank is reduced by the grooves, the clearance enables a stress point to move downwards and the root of the blank to avoid, the strength of the sawteeth is increased, and the service life of the sawteeth is prolonged. The product can be reliably and firmly clamped, the stress area of the product can be reduced, plastic deformation generated after the product is stressed in the machining process is reduced, and therefore the flatness of the product is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of 8-shaped bushing processing, and particularly relates to a special combined jaw for 8-shaped bushing processing. Background Technique

[0002] The 8-shaped bushing, also known as the eight-shaped bushing, H-shaped bushing or double-hole bushing, is a common connecting component in mechanical engineering. Its shape is similar to the Chinese character "eight", so it gets its name. This kind of bushing is mainly used for the connection between two parallel shafts, especially in the application scenarios where torque needs to be transmitted or radial loads need to be borne. During the processing of the 8-shaped bushing, jaws are required to fix the position of the 8-shaped bushing to prevent the position of the 8-shaped bushing from shifting during the processing. The original jaws are multi-row tooth-shaped horizontally, without high and low teeth and grooves. After long-term use, the teeth are prone to breakage and damage, and the product is deformed after processing, unable to meet the process requirements. Therefore, a special combined jaw for 8-shaped bushing processing is proposed. Content of the Utility Model

[0003] The purpose of the utility model is to provide a special combined jaw for 8-shaped bushing processing to solve the problems put forward in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A special combined jaw for 8-shaped bushing processing, including two groups of limit clamps, a driving component is arranged between the two groups of limit clamps. The limit clamp includes a first jaw body and a second jaw body. At least one row of saw teeth is arranged on the adjacent end faces of the first jaw body and the second jaw body. There is a clearance above the saw teeth, and an arc transition is arranged below the saw teeth. The saw teeth include high teeth and low teeth arranged alternately, and a groove is formed between the high teeth and the low teeth.

[0005] As a further scheme of the utility model: A step groove is formed on the surface of the first jaw body.

[0006] As a further scheme of the utility model: The lower surfaces of the first jaw body and the second jaw body are both connected to the upper surface of the bottom plate.

[0007] As a further scheme of the utility model: A limit strip is arranged on the lower surface of the first jaw body, and a strip-shaped limit groove adapted to the limit strip is formed on the upper surface of the bottom plate.

[0008] As a further scheme of the utility model: A dovetail strip is arranged on the lower surface of the second jaw body, and a dovetail groove adapted to the dovetail strip is formed on the upper surface of the bottom plate.

[0009] As a further solution of the present utility model: The driving assembly includes a connecting plate located between two second jaw bodies. A pull rod is installed on the lower surface of the connecting plate, and the end of the pull rod away from the connecting plate is connected to an oil cylinder.

[0010] Compared with the prior art, the beneficial effects of the present utility model are:

[0011] After the product is clamped in this application, its high teeth can be embedded in the product to increase the clamping force. Its low teeth disperse the clamping force and prevent the high teeth from being embedded too much, which is not easy to take. Its grooves reduce the stress area of the blank. Its clearance allows the stress point to move down and the avoidance at the root of the blank increases the strength of the saw teeth. It can not only clamp the product reliably and firmly, but also reduce the stress area of the product, so that the plastic deformation generated by the product after being stressed during the processing process is reduced, thereby ensuring the flatness of the product. Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of the combined jaw of the present utility model;

[0013] Figure 2 It is a schematic diagram of the first jaw body of the present utility model;

[0014] Figure 3 It is a schematic diagram of the second jaw body of the present utility model;

[0015] Figure 4 It is a schematic side view of the first jaw body of the present utility model;

[0016] In the figure: 1. First jaw body; 2. Second jaw body; 3. Connecting plate; 4. Pull rod; 5. Saw teeth; 5-1. High teeth; 5-2. Low teeth; 5-3. Grooves; 6. Step groove; 7. Limit strip; 8. Bottom plate; 9. Dovetail strip; 10. Clearance; 11. Arc transition. Detailed Embodiment

[0017] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0018] Please refer to Figures 1-4, in the embodiment of the present utility model, a special combined jaw for machining an eight-shaped bushing includes two groups of limit clamps, and a driving component is arranged between the two groups of limit clamps. The limit clamp includes a first jaw body 1 and a second jaw body 2. At least one row of sawteeth 5 is provided on the adjacent end faces of the first jaw body 1 and the second jaw body 2. There is a clearance 10 above the sawteeth 5, and an arc transition 11 is provided below the sawteeth 5. The sawteeth 5 include alternately arranged high teeth 5-1 and low teeth 5-2, and a groove 5-3 is formed between the high teeth 5-1 and the low teeth 5-2.

[0019] Specifically, on the one hand, the sawteeth 5 are arranged such that there is one low tooth 5-2 between every two high teeth 5-1, and a groove 5-3 is provided between each high and low tooth. After clamping, the high teeth 5-1 are embedded in the blank, increasing the clamping force and concentrating the clamping force at the same time, reducing the deformation caused by the extension of the force. The design of the groove 5-3 reduces the stress points of the product. On the other hand, a clearance 10 is provided above the sawteeth 5 to move the stress point downward; an arc transition 11 is provided below the sawteeth 5, and the arc serves to support the sawteeth 5 and increase the strength of the sawteeth 5. Such jaws are used in pairs facing each other.

[0020] Please refer to Figure 1 , in an embodiment, in this embodiment, preferably, a step groove 6 is formed on the surface of the first jaw body 1. The number of step grooves 6 is not limited. In this embodiment, the number of step grooves 6 is two, and both of the two step grooves 6 penetrate from the upper surface of the first jaw body 1 to the lower surface of the first jaw body 1, facilitating the bolt to pass through the step groove 6 to fix the first jaw body 1 on the upper surface of the bottom plate 8.

[0021] Please refer to Figure 1 , in an embodiment, in this embodiment, preferably, the lower surfaces of both the first jaw body 1 and the second jaw body 2 are connected to the upper surface of the bottom plate 8. A limit strip 7 is provided on the lower surface of the first jaw body 1, and a strip-shaped limit groove adapted to the limit strip 7 is formed on the upper surface of the bottom plate 8. With the cooperation of the limit strip 7 and the strip-shaped limit groove, it is convenient to first fix the first jaw body 1 on the upper surface of the bottom plate 8. A dovetail strip 9 is provided on the lower surface of the second jaw body 2, and a dovetail groove adapted to the dovetail strip 9 is formed on the upper surface of the bottom plate 8. Under the action of the dovetail strip 9 and the dovetail groove, when the second jaw body 2 moves, it will be restricted to move only along the length direction of the dovetail groove, and the second jaw body 2 can clamp and release the eight-shaped bushing during the moving process.

[0022] Please refer to Figure 1 , in an embodiment, in this embodiment, preferably, the driving component includes a connecting plate 3 located between the two second jaw bodies 2. A pull rod 4 is installed on the lower surface of the connecting plate 3, and the end of the pull rod 4 away from the connecting plate 3 is connected to an oil cylinder.

[0023] Specifically, the two non-adjacent sides of the connecting plate 3 are inclined inward from top to bottom, and the surfaces of the two second jaw bodies 2 adjacent to the connecting plate 3 are both inclined outward from top to bottom. In this way, when the pull rod 4 drives the connecting plate 3 to move vertically downward, the two second jaw bodies 2 on both sides can be respectively squeezed to clamp the figure-eight bushing, achieving a fixing effect.

[0024] The working principle and usage process of the present utility model are as follows: First, place the product between the first jaw body 1 and the second jaw body 2, and drive the pull rod 4 to move downward by the oil cylinder. At this time, the connecting plate 3 moves synchronously with the pull rod 4, and the connecting plate 3 squeezes the second jaw bodies 2 on both sides to move closer to the product. Since the position of the first jaw body 1 is fixed, when the second jaw body 2 moves closer to the product, the product can be clamped and fixed, thereby completing the fixation of the product.

[0025] Although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0026] Therefore, the above is only the preferred embodiment of the present application, and is not used to limit the scope of implementation of the present application; that is, all equivalent transformations made according to the scope of the claims of the present application are within the protection scope of the claims of the present application.

Claims

1. A special combined jaw for processing 8-shaped sleeves, characterized in that: The invention comprises two groups of limit clamps, a driving assembly is arranged between the two groups of limit clamps, the limit clamps comprise a first jaw body (1) and a second jaw body (2), the adjacent end faces of the first jaw body (1) and the second jaw body (2) are each provided with at least one row of saw teeth (5), a gap (10) is provided above the saw teeth (5), and an arc transition (11) is provided below the saw teeth (5), the saw teeth (5) comprise high teeth (5-1) and low teeth (5-2) which are arranged alternately with each other, and a groove (5-3) is formed between the high teeth (5-1) and the low teeth (5-2).

2. The special combined jaws for processing 8-shaped sleeves according to claim 1 are characterized in that: A step groove (6) is provided on the surface of the first jaw body (1).

3. The special combined jaws for processing 8-shaped sleeves according to claim 1 are characterized in that: The lower surfaces of the first jaw body (1) and the second jaw body (2) are both connected to the upper surface of the bottom plate (8).

4. The special combined jaws for processing 8-shaped sleeves according to claim 3 are characterized in that: A limiting strip (7) is provided on the lower surface of the first jaw body (1), and a strip-shaped limiting groove adapted to the limiting strip (7) is provided on the upper surface of the bottom plate (8).

5. The special combined jaws for processing 8-shaped sleeves according to claim 3 are characterized in that: A dovetail strip (9) is provided on the lower surface of the second jaw body (2), and a dovetail groove adapted to the dovetail strip (9) is provided on the upper surface of the bottom plate (8).

6. The special combined jaws for processing 8-shaped sleeves according to claim 1, characterized in that: The driving assembly comprises a connecting plate (3) located between the two second jaw bodies (2), a pull rod (4) is installed on the lower surface of the connecting plate (3), and the end of the pull rod (4) away from the connecting plate (3) is connected to the oil cylinder.

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