A positioning device suitable for one-time machining of a chain wheel

Abstract

A kind of positioning device suitable for chain wheel once processing completion, including machine tool chuck, several slides are evenly arranged in the form of from center to periphery radiation on machine tool chuck, several slides are slidably arranged with slider, clamping assembly is arranged on the upper portion of slider, and several clamping assemblies are cooperated to clamp chain wheel;New processing clamping tool is set, new clamping mode is used, excessive holding force leading to stress deformation after processing is avoided, and simultaneously, operation is simple, chain wheel can be processed once, efficiency is improved, and labor intensity is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sprocket manufacturing technology, and more specifically to a positioning device suitable for one-time processing of sprockets. Background Technology

[0002] A sprocket is a wheel with interlocking teeth for meshing with precisely pitched blocks on a chain link or cable. Sprockets are widely used in mechanical transmissions in industries such as chemical engineering, textile machinery, escalators, wood processing, automated parking systems, agricultural machinery, food processing, instrumentation, and petroleum.

[0003] During the production process, the process route is relatively complicated due to the unsuitable processing tooling. It includes machining one end face of the horizontal lathe, machining the other side of the horizontal lathe, drilling, painting, finishing and warehousing, which takes a long time. At the same time, the sprocket may be deformed in size. Utility Model Content

[0004] One advantage of this invention is that it provides a positioning device suitable for one-time processing of sprockets. It sets up a new processing clamping fixture and adopts a new clamping method, which avoids stress deformation after processing due to excessive clamping force. At the same time, it is easy to operate, and the sprocket can be processed in one go, which improves efficiency and reduces labor intensity.

[0005] To achieve at least one of the above advantages of this utility model, this utility model provides a positioning device suitable for one-time machining of sprockets, including a machine tool chuck. The machine tool chuck has a plurality of slides evenly arranged in a radial pattern from the center to the periphery. Each of the slides has a slider that can be slidably arranged. A clamping component is arranged on the upper part of the slider. The plurality of clamping components cooperate with each other to clamp the sprocket.

[0006] According to one embodiment of the present invention, a threaded hole is provided through the slider from top to bottom, and a bolt is coupled inside the threaded hole. The lower end of the bolt is brought into contact with the slide rail by the up and down movement of the bolt to limit the slider.

[0007] According to one embodiment of the present invention, the clamping assembly has a stepped structure, including a relatively wide primary clamping block and a relatively narrow secondary clamping block located above it. The secondary clamping block is provided with an arc-shaped component, and a pressure plate is bolted to the upper end of the secondary clamping block.

[0008] According to one embodiment of the present invention, the arc surface on the arc-shaped component is adapted to the concave surface of the sprocket.

[0009] According to one embodiment of the present invention, a foolproof block is provided on the lower surface of the pressure plate. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the novel structure in Embodiment 1 of this utility model. Figure 1 ; Figure 2 This is a schematic diagram of the novel structure in Embodiment 1 of this utility model. Figure 2 ; Figure 3 This is a partially enlarged schematic diagram of the novel embodiment one of this utility model; Figure 4 This is a schematic diagram of the novel structure in Embodiment 2 of this utility model. Figure 1 ; Figure 5 This is a schematic diagram of the novel structure in Embodiment 2 of this utility model. Figure 2 ; Figure 6 This is a partially enlarged schematic diagram of the novel embodiment two of this utility model; In the attached diagram: 1. Machine tool chuck, 2. Clamping assembly, 3. Sprocket, 4. Slide rail, 5. Slider, 6. Primary clamping block, 7. Curved surface component, 8. Pressure plate, 9. Anti-fooling block, 10. Secondary clamping block, 11. Connecting block. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this utility model clearer, the following description will be provided in conjunction with the appendix of this utility model. Figure 1 ~Appendix Figure 6 The present invention will be described in more detail below.

[0012] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0013] Those skilled in the art should understand that, in the disclosure of this specification, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, the above terms should not be construed as limitations on this utility model.

[0014] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0015] This utility model provides a positioning device suitable for one-time machining of a sprocket 3, including a machine tool chuck 1. The machine tool chuck 1 has several slides 4 evenly arranged radially from the center outwards. Each slide 4 has a sliding block 5. A clamping assembly 2 is provided on the upper part of the sliding block 5. The clamping assemblies 2 cooperate with each other to clamp the sprocket 3. A threaded hole is provided vertically through the sliding block 5, and a bolt is coupled inside the threaded hole. The bolt moves up and down to make its lower end contact the slide 4, thus limiting the movement of the sliding block 5. The clamping assembly 2 has a stepped structure, including a relatively wide primary clamping block 6 and a relatively narrow secondary clamping block 10 located above it. An arc-shaped component 7 is provided on the secondary clamping block 10, and a pressure plate 8 is bolted to the upper end of the secondary clamping block 10. The arc surface of the arc-shaped component 7 is adapted to the concave surface of the sprocket 3. An anti-fooling block 9 is provided on the lower surface of the pressure plate 8.

[0016] The first embodiment of this utility model is as follows: The sprocket 3 is a single integral part, referring to the drive wheel used in engineering main units (such as excavators). It transmits power and motion by meshing with the tracks to ensure the operation of the engineering machinery main unit. It is made from forged or cast blanks through various processes such as rough turning, heat treatment, flaw detection, and precision machining. Its inner hole size needs to be matched with the motor of the engineering machinery main unit to ensure the operation of the main unit chassis and the movement of the main unit.

[0017] In order to achieve the one-step processing of sprocket 3, avoid deformation due to clamping force, improve product quality, and prevent defective products from being shipped out, this technical solution is designed. It has several advantages, including the use of tooth bottom positioning to ensure that the positioning reference is appropriate, tooth bottom loose clamping to ensure that the precision machining dimensions are not deformed after blanking, and pressure cap tightening to ensure that the product is firmly positioned during the processing.

[0018] A positioning device suitable for one-time machining of sprocket 3 includes a machine tool chuck 1. Three slides 4 are evenly arranged on the machine tool chuck 1 in a radial pattern from the center. The angle between adjacent slides 4 is 120 degrees. Each of the three slides 4 has a slider 5 that can slide. The slider 5 has a threaded hole running through it. Bolts are coupled inside the threaded hole. The lower end of the bolt is brought into contact with the slide 4 by moving up and down, thereby limiting the slider 5. After the slider 5 is moved to a suitable position on the slide 4, the bolt is tightened to fix the slider 5 relative to the slide 4 by the static friction between the bolt and the bottom surface of the slide 4.

[0019] To achieve further fixation, further embodiments can be adopted, including setting friction texture on the bottom surface of the slide 4, or setting positioning holes at predetermined positions according to predetermined dimensions, and screwing bolts into the positioning holes to directly achieve the positioning of the slider 5.

[0020] The upper part of the slider 5 is provided with a clamping component 2. The three clamping components 2 cooperate with each other to clamp the sprocket 3. The clamping component 2 has a stepped structure, including a relatively wide primary clamping block 6 and a relatively narrow secondary clamping block 10 located above it. The primary clamping block 6 is connected to the slider 5 by bolts. The secondary clamping block 10 is provided with an arc surface part 7. The arc surface on the arc surface part 7 is adapted to the concave surface of the sprocket 3. The tooth bottom positioning is adopted to ensure that the positioning reference is appropriate, and it can achieve virtual clamping to ensure that the precision machining dimensions are not deformed after blanking. The upper end of the secondary clamping block 10 is also connected to a pressure plate 8 by bolts. The product is firmly positioned during the processing by clamping with the pressure plate 8.

[0021] The specific shape of the clamping component 2 can be set in two forms, as follows: Figure 3 or Figure 6 As shown, the arc-shaped parts 7 of the two structures have different lengths, which can be applied to sprockets 3 of different sizes.

[0022] In Embodiment 1, a foolproof block 9 is provided on the lower surface of the pressure plate 8. The cross-section of the foolproof block 9 is the same as and corresponds to the arc surface part 7. When the pressure plate 8 is installed in place, the foolproof block 9 can be inserted into the concave arc groove of the sprocket 3. If the pressure plate 8 is not installed before the clamping assembly 2 clamps, after clamping, because the pressure plate 8 has the foolproof block 9, the interference between the foolproof block 9 and the sprocket 3 will prevent the pressure plate 8 from being installed, thus realizing the foolproof function.

[0023] In the second embodiment, the anti-mistake block 9 has another structure, namely a beam structure. The pressure plate 8 in the second embodiment includes a connecting block 11 at the rear end, which is connected to the arc-shaped part 7 through the connecting block 11. The anti-mistake block 9 is set in the middle of the lower surface of the pressure plate 8. Through the same principle, the pressure plate 8 cannot be installed after the sprocket 3 is clamped, and can only be installed before clamping, thus realizing the anti-mistake function.

[0024] It should be noted that the terms "first, second, and third" used in this utility model are for descriptive purposes only and do not indicate any order. They should not be construed as indicating or implying relative importance, and can be interpreted as names.

[0025] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the principles, the implementation of the present invention may have any modifications or variations.

Claims

1. A positioning device suitable for one-time machining of sprockets, characterized in that: The machine tool includes a machine tool chuck, on which a plurality of slides are evenly arranged in a radial pattern from the center outwards. Each of the slides is provided with a slider in a slidable manner. A clamping component is provided on the upper part of the slider. The plurality of clamping components cooperate with each other to clamp the sprocket.

2. The positioning device for one-time machining of sprockets according to claim 1, characterized in that: The slider has through holes running vertically, and bolts are coupled inside the through holes. The lower end of the bolts contacts the slide rail to limit the slider's movement.

3. The positioning device for one-time machining of sprockets according to claim 1, characterized in that: The clamping assembly has a stepped structure, including a relatively wide primary clamping block and a relatively narrow secondary clamping block located above it. The secondary clamping block is provided with an arc-shaped component, and a pressure plate is bolted to the upper end of the secondary clamping block.

4. The positioning device for one-time machining of sprockets according to claim 3, characterized in that: The arc surface on the arc-shaped component is adapted to the concave surface of the sprocket.

5. The positioning device for one-time machining of sprockets according to claim 3, characterized in that: A foolproof block is provided on the lower surface of the pressure plate.

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