A special machining fixture for crank parts

Abstract

The utility model relates to the technical field of crank class parts, disclose a special machining fixture of crank class parts, including base, the base top fixedly connected with support seat at both sides, the support seat inner wall fixedly connected with slide rod at front side, the slide rod outer wall both sides slide connection has the moving plate, the support seat inner wall is provided with adjusting assembly at back side, the moving plate top fixedly connected support frame, support frame inner wall fixedly connected with fixed peg, the fixed peg inner wall is provided with fixed component. In the utility model, the second knob drives the threaded rod to rotate, drives the conical block to move up, the conical block will extrude the arc roof when moving up to make the arc roof move to the outside, the arc roof will drive the slide rod and fixed plate to move to the outside when moving to the outside, fixes the hole of crank both sides to fix the crank on the support frame, can adapt to the fixed demand of different size's crank class parts, improves production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of crank-type parts, and in particular to a special machining fixture for crank-type parts. Background Technology

[0002] The crank is one of the most basic and core components in mechanical transmission and motion conversion. It is a rod that rotates a full revolution around a fixed axis. It usually works in conjunction with connecting rods, sliders, or rockers to convert rotational motion into reciprocating linear motion or oscillation, or to convert reciprocating motion into rotational motion.

[0003] In the existing technology, if crank-type parts need to be cut and ground, special fixtures are required to fix them. However, existing fixtures can usually only be used to process cranks of fixed size. For crank-type parts of different sizes and shapes, different fixtures are often required, which not only increases production costs but also reduces production efficiency.

[0004] In response to this technical problem, this application proposes a special machining fixture for crank-type parts. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a special machining fixture for crank-type parts. The second knob drives the threaded rod to rotate, causing the conical block to move upward. When the conical block moves upward, it presses against the arc-shaped top plate, causing the arc-shaped top plate to move outward. When the arc-shaped top plate moves outward, it drives the sliding rod and the fixing plate to move outward, fixing the holes on both sides of the crank, thereby fixing the crank to the support frame. This fixture can adapt to the fixing requirements of crank-type parts of different sizes and improve production efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A special machining fixture for crank-type parts includes a base, with support seats fixedly connected to both sides of the top of the base. A slide rod is fixedly connected to the inner wall of the front support seat, and a movable plate is slidably connected to both sides of the outer wall of the slide rod. An adjustment component is provided on the inner wall of the rear support seat. A support frame is fixedly connected to the top of the movable plate, and a fixing bolt is fixedly connected to the inner wall of the support frame. A fixing component is provided on the inner wall of the fixing bolt, and a spreading component is provided on the inner wall of the bottom end of the fixing bolt. A collecting component is provided on the inner wall of the bottom end of the base.

[0007] Furthermore, the adjustment assembly includes a bidirectional screw fixedly connected to the inner wall of the rear support base, a first knob fixedly connected to the left end of the bidirectional screw, and the inner wall of the rear end of the movable plate threadedly connected to the outer wall of the bidirectional screw.

[0008] Furthermore, the fixing assembly includes a sliding rod slidably connected to the inner wall of the fixing bolt, a fixing plate is fixedly connected to one outer end of the sliding rod, and an arc-shaped top plate is fixedly connected to one inner end of the sliding rod. The arc-shaped top plate is connected to the inner wall of the fixing bolt by a spring.

[0009] Furthermore, one end of the spring is connected to the inner wall of the fixing bolt, and the other end of the spring is connected to the arc-shaped top plate.

[0010] Furthermore, the spreading assembly includes a threaded rod threaded to the inner wall of the bottom end of the fixing bolt, a second knob fixedly connected to the bottom end of the threaded rod, and a conical block rotatably connected to the top end of the threaded rod.

[0011] Furthermore, one end of the inner side of the arc-shaped top plate is arc-shaped, and the outer wall of the conical block is in contact with one end of the inner side of the arc-shaped top plate.

[0012] Furthermore, the collection component includes a collection groove located on the inner wall of the bottom end of the base, a filter screen is fixedly connected to the inner wall of the collection groove, a through groove is provided in the middle of the inner wall of the base, a collection box is slidably connected to the inner wall of the bottom end of the base, and a handle is fixedly connected to the front end of the collection box.

[0013] Furthermore, the inner wall of the collection tank and the inner wall of the collection box are connected by a through groove.

[0014] This utility model has the following beneficial effects: 1. In this utility model, the second knob drives the threaded rod to rotate, which in turn drives the conical block to move upward. When the conical block moves upward, it will press the arc-shaped top plate, causing the arc-shaped top plate to move outward. When the arc-shaped top plate moves outward, it will drive the sliding rod and the fixing plate to move outward, thereby fixing the holes on both sides of the crank and fixing the crank to the support frame. This can adapt to the fixing requirements of crank-type parts of different sizes and improve production efficiency.

[0015] 2. In this utility model, the filter screen on the collection tank filters the debris, preventing other workpieces and debris from entering the collection box. When the debris in the collection box accumulates to a certain extent, the collection box can be pulled out by the handle to clean the debris. This allows for the collection and cleaning of debris generated during the processing, maintaining a clean working environment. Attached Figure Description

[0016] Figure 1 This is a perspective view of a special machining fixture for crank-type parts proposed in this utility model; Figure 2 This is a schematic diagram of the structure of the first threaded rod in a special machining fixture for crank-type parts proposed in this utility model; Figure 3This is a schematic diagram of the fixing bolt in a special machining fixture for crank-type parts proposed in this utility model; Figure 4 This is a schematic diagram of the collecting groove in a special machining fixture for crank-type parts proposed in this utility model.

[0017] Legend: 1. Base; 2. Support base; 3. Slide rod; 4. Moving plate; 5. Two-way screw; 6. First knob; 7. Support frame; 8. Fixing bolt; 9. Slide rod; 10. Fixing plate; 11. Arc-shaped top plate; 12. Spring; 13. Threaded rod; 14. Conical block; 15. Second knob; 16. Collection trough; 17. Filter screen; 18. Through groove; 19. Collection box; 20. Handle. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Reference Figures 1-3 This utility model provides an embodiment of a special machining fixture for crank-type parts, including a base 1, with support seats 2 fixedly connected to both sides of the top of the base 1, a slide rod 3 fixedly connected to the inner wall of the front support seat 2, and movable plates 4 slidably connected to both sides of the outer wall of the slide rod 3, a bidirectional screw 5 fixedly connected to the inner wall of the rear support seat 2, a first knob 6 fixedly connected to the left end of the bidirectional screw 5, the inner wall of the rear end of the movable plate 4 threadedly connected to the outer wall of the bidirectional screw 5, a support frame 7 fixedly connected to the top of the movable plate 4, a fixing bolt 8 fixedly connected to the inner wall of the support frame 7, and a slide rod slidably connected to the inner wall of the fixing bolt 8. 9. A fixed plate 10 is fixedly connected to one outer end of the sliding rod 9, and an arc-shaped top plate 11 is fixedly connected to one inner end of the sliding rod 9. The arc-shaped top plate 11 is connected to the inner wall of the fixing bolt 8 by a spring 12. One end of the spring 12 is connected to the inner wall of the fixing bolt 8, and the other end of the spring 12 is connected to the arc-shaped top plate 11. A threaded rod 13 is threadedly connected to the inner wall of the bottom end of the fixing bolt 8. A second knob 15 is fixedly connected to the bottom end of the threaded rod 13. A conical block 14 is rotatably connected to the top end of the threaded rod 13. One inner end of the arc-shaped top plate 11 is arc-shaped, and the outer wall of the conical block 14 fits against one inner end of the arc-shaped top plate 11. Specifically, before machining the crank, the part is first placed on two support frames 7. Next, operating the first knob 6 drives the double-ended screw 5 to rotate, causing the two movable plates 4 to move relative to each other on the slide rod 3, adjusting the distance between the fixed plates 10. This allows the holes on both sides of the crank to be fitted over the fixing bolts 8. Then, rotating the second knob 15 drives the threaded rod 13 to rotate, causing the conical block 14 to move upwards. As the conical block 14 rises, it presses against the arc-shaped top plate 11, causing it to move outwards. The outward movement of the arc-shaped top plate 11 moves the slide rod 9 and the fixed plate 10 outwards together, thus fixing the holes on both sides of the crank. This process securely fixes the crank on the support frame 7, facilitating machining and adapting to crank-type parts of various sizes.

[0020] Reference Figure 1 , Figure 2 and Figure 4 A collection groove 16 is opened on the inner wall of the bottom end of the base 1. A filter screen 17 is fixedly connected to the inner wall of the collection groove 16. A through groove 18 is opened in the middle of the inner wall of the base 1. A collection box 19 is slidably connected to the inner wall of the bottom end of the base 1. A handle 20 is fixedly connected to the front end of the collection box 19. The inner wall of the collection groove 16 and the inner wall of the collection box 19 are connected through the through groove 18. Specifically, during the processing, the generated debris falls into the collection tank 16 through the through groove 18 on the base 1. The filter screen 17 on the collection tank 16 filters the debris, preventing other workpiece debris from entering the collection box 19. When the debris in the collection box 19 accumulates to a certain level, the collection box 19 can be pulled out using the handle 20 to clean the debris. In this way, the debris generated during processing can be effectively collected and cleaned, maintaining a clean working environment.

[0021] Working principle: When machining the crank, first place the part on the two support frames 7, then turn the first knob 6. The first knob 6 drives the double-ended screw 5 to rotate, causing the two moving plates 4 to move closer or further apart on the slide rod 3, thereby adjusting the distance between the two fixed plates 10, so that the holes on both sides of the crank are fitted outside the fixing bolts 8. Then, by turning the second knob 15, the second knob 15 drives the threaded rod 13 to rotate, causing the conical block 14 to move upward. When the conical block 14 moves upward, it will press the arc-shaped top plate 11, causing the arc-shaped top plate 11 to move outward. When the arc-shaped top plate 11 moves outward, it will drive the sliding rod 9 and the fixed plate 10 to move outward, fixing the holes on both sides of the crank, thereby fixing the crank on the support frame 7, which is convenient for machining and can adapt to crank-type parts of different sizes. During the processing, the generated debris falls into the collection tank 16 through the through groove 18 on the base 1. The filter screen 17 on the collection tank 16 filters the debris to prevent other workpieces and debris from entering the collection box 19. When the debris in the collection box 19 accumulates to a certain extent, the collection box 19 can be pulled out by the handle 20 to clean the debris. This allows for the collection and cleaning of debris generated during the processing, maintaining a clean working environment.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A special machining fixture for crank-type parts, characterized in that: The base includes a base (1), with support seats (2) fixedly connected to both sides of the top of the base (1). A sliding rod (3) is fixedly connected to the inner wall of the front support seat (2). A movable plate (4) is slidably connected to both sides of the outer wall of the sliding rod (3). An adjustment component is provided on the inner wall of the rear support seat (2). A support frame (7) is fixedly connected to the top of the movable plate (4). A fixing bolt (8) is fixedly connected to the inner wall of the support frame (7). A fixing component is provided on the inner wall of the fixing bolt (8). A spreading component is provided on the inner wall of the bottom end of the fixing bolt (8). A collecting component is provided on the inner wall of the bottom end of the base (1).

2. The special machining fixture for crank-type parts according to claim 1, characterized in that: The adjustment assembly includes a bidirectional screw (5) fixedly connected to the inner wall of the rear support (2), a first knob (6) fixedly connected to the left end of the bidirectional screw (5), and the inner wall of the rear end of the moving plate (4) threadedly connected to the outer wall of the bidirectional screw (5).

3. A special machining fixture for crank-type parts according to claim 1, characterized in that: The fixing assembly includes a sliding rod (9) that is slidably connected to the inner wall of the fixing bolt (8). A fixing plate (10) is fixedly connected to one end of the outer side of the sliding rod (9), and an arc-shaped top plate (11) is fixedly connected to one end of the inner side of the sliding rod (9). The arc-shaped top plate (11) is connected to the inner wall of the fixing bolt (8) by a spring (12).

4. A special machining fixture for crank-type parts according to claim 3, characterized in that: One end of the spring (12) is connected to the inner wall of the fixing bolt (8), and the other end of the spring (12) is connected to the arc-shaped top plate (11).

5. A special machining fixture for crank-type parts according to claim 3, characterized in that: The opening assembly includes a threaded rod (13) threaded to the inner wall of the bottom end of the fixing bolt (8), a second knob (15) fixedly connected to the bottom end of the threaded rod (13), and a conical block (14) rotatably connected to the top end of the threaded rod (13).

6. A special machining fixture for crank-type parts according to claim 5, characterized in that: The inner end of the arc-shaped top plate (11) is arc-shaped, and the outer wall of the cone-shaped block (14) is in contact with the inner end of the arc-shaped top plate (11).

7. A special machining fixture for crank-type parts according to claim 1, characterized in that: The collection assembly includes a collection groove (16) located on the inner wall of the bottom end of the base (1), a filter screen (17) is fixedly connected to the inner wall of the collection groove (16), a through groove (18) is provided in the middle of the inner wall of the base (1), a collection box (19) is slidably connected to the inner wall of the bottom end of the base (1), and a handle (20) is fixedly connected to the front end of the collection box (19).

8. A special machining fixture for crank-type parts according to claim 7, characterized in that: The inner wall of the collection trough (16) and the inner wall of the collection box (19) are connected by a through groove (18).

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