V-shaped tool for positioning cross shaft

Abstract

The utility model relates to a V-shaped tool for positioning a universal joint pin, which is used for being matched with an indexing chuck to fix the universal joint pin and comprises a main body, a V-shaped groove is arranged on the main body, a connecting block used for being connected with the indexing chuck is arranged on the lower side of the main body, a concave hole is arranged at the center concave position of the main body, and a cleaning assembly is arranged in the concave hole and comprises a supporting rod coaxial with the main body. A scraping plate is mounted on the supporting rod and can rotate relative to the main body. After the universal joint pin is fixed by the tool and the indexing chuck together, when the universal joint pin rotates and reverses, the scrapers can stir sweeps to enable the sweeps to fall off from a gap between the universal joint pin and the main body, and the situation that the sweeps are accumulated, flow of air and cooling water is affected, and consequently heat dissipation is affected is prevented.

Description

Technical Field

[0001] This utility model relates to the field of cross shaft machining technology, specifically to a V-shaped tooling for cross shaft positioning. Background Technology

[0002] During the turning process, cross shafts require positioning using tooling. Traditional cross shaft positioning tooling typically involves slotting a flat surface on the upper surface of the tooling and setting a protrusion at a corresponding position on the cross shaft, using the protrusion and groove for positioning. Since the protrusion is directly cast, its dimensions are difficult to control, often resulting in inaccurate positioning.

[0003] Improvements to existing technology have led to the development of V-shaped support positioning fixtures, which directly position the root of the shaft diameter, resulting in a larger contact area and more accurate positioning. Furthermore, eliminating the protrusion allows for a lighter cross shaft. However, existing V-shaped support positioning fixtures leave a gap between the fixture and the cross shaft after placement. Waste chips from the turning process can enter the fixture through this gap, and the accumulation of these chips can affect workpiece heat dissipation. Utility Model Content

[0004] To address the problem of waste accumulating inside existing V-shaped support positioning fixtures during use, this utility model proposes a V-shaped fixture for cross-axis positioning, the specific technical solution of which is as follows:

[0005] A V-shaped tooling for positioning a cross shaft, used to fix the cross shaft in conjunction with an indexing chuck, includes a main body with a V-groove, a connecting block for connecting to the indexing chuck on the lower side of the main body, and a recessed hole in the center of the main body. A cleaning component is installed in the recessed hole. The cleaning component includes a support rod arranged coaxially with the main body, and a scraper is installed on the support rod. The scraper can rotate relative to the main body.

[0006] Optionally, the scraper and the support rod are fitted with a clearance, and baffles are provided on the upper and lower sides of the scraper, with the baffles fixedly connected to the support rod.

[0007] Optionally, a movable plate that can slide up and down along the recess is also provided inside the recess. The movable plate is fixedly connected to the support rod. An elastic element is provided on the lower side of the movable plate. After the cross shaft is placed, the movable plate moves down to compress the elastic element. After the cross shaft is removed, the movable plate moves to the upper edge of the recess.

[0008] Optionally, the included angle of the V-groove is 90°.

[0009] Optionally, the elastic element is a spring arranged around the periphery of the support rod.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. After the tooling and indexing chuck together fix the cross shaft, when the cross shaft rotates to change direction, the scraper can move the waste chips and make them fall from the gap between the cross shaft and the main body, preventing the waste chips from accumulating and affecting the flow of air and cooling water, thus affecting heat dissipation.

[0012] 2. The positioning holes during casting can be used as recessed holes, which do not require machining, reducing manufacturing costs. The movable plate makes it easier to clean the waste chips in the recessed holes after turning. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of the V-shaped tooling for cross shaft positioning described in this utility model;

[0015] Figure 2 This is a top view of the V-shaped tooling for cross-axis positioning described in this utility model;

[0016] Figure 3 This is a cross-sectional view of the V-shaped tooling for cross-axis positioning described in this utility model;

[0017] Figure 4 This is a schematic diagram of the use of the V-shaped tooling for cross shaft positioning described in this utility model.

[0018] In the diagram: 1. Main body; 1.1. V-groove; 2. Cleaning assembly; 2.1. Scraper; 2.2. Baffle; 2.3. Movable plate; 2.4. Support rod; 3. Cross shaft; 4. Connecting block. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] The present invention provides the following specific implementation scheme:

[0021] like Figure 1-3 As shown, this utility model provides a V-shaped tooling for positioning a cross shaft, used to fix the cross shaft 3 in conjunction with an indexing chuck. It includes a main body 1, a V-shaped groove on the main body 1, a connecting block 4 on the lower side of the main body 1 for connecting with the indexing chuck, and a recessed hole in the center of the main body 1. A cleaning component 2 is installed in the recessed hole. The cleaning component 2 includes a support rod 2.4 arranged coaxially with the main body 1, and a scraper 2.1 is installed on the support rod 2.4. The scraper 2.1 can rotate relative to the main body 1.

[0022] Optionally, the scraper 2.1 and the support rod 2.4 are fitted with a clearance fit, and baffles 2.2 are provided on the upper and lower sides of the scraper 2.1, with the baffles 2.2 fixedly connected to the support rod 2.4.

[0023] Optionally, a movable plate 2.3 that can slide up and down along the recess is also provided inside the recess. The movable plate 2.3 is fixedly connected to the support rod 2.4. An elastic element is provided on the lower side of the movable plate 2.3. After the cross shaft 3 is placed, the movable plate 2.3 moves down to compress the elastic element. After the cross shaft 3 is removed, the elastic element returns to its original state, and the movable plate 2.3 moves to the upper edge of the recess to prevent debris from accumulating and getting stuck in the recess, making it difficult to clean.

[0024] Optionally, the included angle of the V-groove 1.1 is 90°. Alternatively, the included angle can be 60° or 120°.

[0025] Optionally, the elastic element is a spring arranged around the periphery of the support rod 2.4.

[0026] like Figure 4As shown, during use, the connecting block 4 is placed in the corresponding groove of the indexing chuck, and the root of the cross shaft 3 is placed on the V-groove 1.1. The spring is compressed, the movable plate 2.3 moves down, and the telescopic rod on the indexing chuck is used to press the cross shaft 3. Then, turning is performed. When the cross shaft 3 is reversed, the main body 1 rotates 45° and then 45° under the drive of the indexing chuck to complete the reversal. During this process, the scraper 2.1 rotates under the action of inertia, thereby stirring up the waste chips. Some of the waste chips fall outside the main body 1, and some fall into the concave hole at the bottom. After the turning is completed, the cross shaft 3 is removed, and the movable plate 2.3 is reset.

[0027] After the tooling and indexing chuck together fix the cross shaft 3, when the cross shaft 3 rotates to change direction, the scraper 2.1 can shake the waste chips so that the waste chips fall off from the gap between the cross shaft 3 and the main body 1, preventing the waste chips from accumulating and affecting heat dissipation.

[0028] The positioning holes during the casting of the main body 1 can be used as recessed holes, which do not require machining, thus reducing manufacturing costs.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A V-shaped tooling for positioning a cross shaft, used to fix a cross shaft (3) in conjunction with an indexing chuck, comprising a main body (1), a V-groove on the main body (1), and a connecting block (4) on the lower side of the main body (1) for connecting with the indexing chuck, characterized in that: The main body (1) has a recessed hole in the center, and a cleaning component (2) is installed in the recessed hole. The cleaning component (2) includes a support rod (2.4) arranged coaxially with the main body (1). A scraper (2.1) is installed on the support rod (2.4). The scraper (2.1) can rotate relative to the main body (1).

2. The V-shaped tooling for cross-axis positioning according to claim 1, characterized in that: The scraper (2.1) and the support rod (2.4) are fitted with clearance. The scraper (2.1) has baffles (2.2) on its upper and lower sides, and the baffles (2.2) are fixedly connected to the support rod (2.4).

3. The V-shaped tooling for cross-axis positioning according to claim 1, characterized in that: The recessed hole is also provided with a movable plate (2.3) that can slide up and down along the recessed hole. The movable plate (2.3) is fixedly connected to the support rod (2.4). The lower side of the movable plate (2.3) is provided with an elastic element. After the cross shaft (3) is placed, the movable plate (2.3) moves down to compress the elastic element. After the cross shaft (3) is removed, the movable plate (2.3) moves to the upper edge of the recessed hole.

4. The V-shaped tooling for cross-axis positioning according to claim 1, characterized in that: The included angle of the V-groove (1.1) is 90°.

5. The V-shaped tooling for cross-axis positioning according to claim 3, characterized in that: The elastic element is a spring arranged around the circumference of the support rod (2.4).

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