Special fixture and shot blasting machine for connecting rod shot blasting
By designing a special fixture for shot peening with connecting rods, and utilizing the vertical space to place long connecting rods at an angle, the problems of low shot peening efficiency and safety hazards were solved, achieving efficient and safe shot peening treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DALIAN JINGUO LOCOMOTIVE PARTS CO LTD
- Filing Date
- 2025-08-26
- Publication Date
- 2026-07-21
AI Technical Summary
The existing shot peening method requires manual repositioning of both ends of the long connecting rod, resulting in low shot peening efficiency and the door cannot be fully closed during shot peening, posing a safety hazard.
A special fixture for shot peening with a connecting rod was designed, including a vertical base, a limiting block and a baffle. By placing the long connecting rod at an angle, the vertical space of the shot peening working chamber is utilized to avoid the two ends of the long connecting rod from changing position and to ensure that the shot peening working chamber door can be closed.
It improves shot peening efficiency, ensures operator safety, and prevents the untreated end faces of the connecting rod from being affected during shot peening.
Smart Images
Figure CN224526910U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shot peening fixtures, specifically to a connecting rod shot peening fixture and a shot peening machine. Background Technology
[0002] Shot peening is a widely used surface strengthening process in factories. It involves using shot to bombard the surface of a workpiece and implant residual compressive stress, thereby improving the fatigue strength of the workpiece. To improve the mechanical strength and wear resistance of connecting rods, companies often perform shot peening on the walls of the large and small holes in the connecting rod. The horizontal space occupied by the shot peening chamber is relatively small, while the vertical space is relatively large. In related technologies, the operator places the connecting rod on the horizontal worktable of the shot peening chamber, and the shot peening mechanism performs shot peening on the walls of the large and small holes of the connecting rod. However, some connecting rods are too long, making it impossible to place them completely on the horizontal worktable. In such cases, the operator opens the door of the shot peening chamber, then places one end of the long connecting rod onto the horizontal worktable, and the shot peening mechanism performs shot peening on that end. This end is then removed, and the other end of the long connecting rod is placed onto the horizontal worktable, and the shot peening mechanism performs shot peening on that end. This shot peening method requires manual repositioning of the two ends of the long connecting rod, resulting in low shot peening efficiency. Furthermore, because the door cannot be completely closed during shot peening, it may pose a danger to the operators. Summary of the Invention
[0003] To overcome the shortcomings of existing shot peening methods that require manual repositioning of both ends of a long connecting rod, resulting in low shot peening efficiency, and the potential danger to operators due to the door not being able to close completely during shot peening, this invention provides a special clamp for connecting rod shot peening and a shot peening machine.
[0004] To achieve the above objectives, in a first aspect, this disclosure provides a special fixture for connecting rod shot peening, comprising: Vertical base, installed on a horizontal workbench; Two first limiting blocks are detachably connected to the vertical base and are located at the lower and side parts of the small ring of the long connecting rod. The first limiting blocks are used to limit the position of one end of the long connecting rod. The second limiting block is detachably connected to the vertical base and is located diagonally below the large ring of the long connecting rod. The height of the second limiting block on the vertical base is higher than that of the two first limiting blocks. The second limiting block is used to limit the position of the other end of the long connecting rod. A large circular baffle and a small circular baffle are provided. The large circular baffle is connected to the second limiting block and is used to block the end face of the large ring of the long connecting rod that is close to the shot peening mechanism. The small circular baffle is connected to one of the two first limiting blocks and is used to block the end face of the small ring of the long connecting rod that is close to the shot peening mechanism.
[0005] Optionally, three screws are installed on the vertical base, and the second limiting block and the two first limiting blocks are respectively provided with threaded holes at the ends near the vertical base, and the screws are screwed into the threaded holes.
[0006] Optionally, the vertical base includes a front base and a rear base, which are arranged opposite to each other. The rear base includes a first horizontal bar, a second horizontal bar, and two first vertical bars. The two first vertical bars are spaced apart along the left-right direction of the horizontal worktable. The two ends of the first horizontal bar are respectively connected to the two first vertical bars. One end of the second horizontal bar is connected to the first vertical bar, and the other end extends away from the large ring end of the connecting rod. The three screws are respectively installed on the first horizontal bar and the two first vertical bars.
[0007] Optionally, the first horizontal bar has a plurality of mounting holes spaced apart in the horizontal direction, and the first vertical bar has a plurality of mounting holes in the vertical direction, and the screw is used to connect to one of the plurality of mounting holes.
[0008] Optionally, the front base includes two second vertical rods, which are arranged opposite to each other and are respectively used to support the second limiting block of the large ring of the long connecting rod and the first limiting block of the lower part of the small ring.
[0009] Secondly, this disclosure provides a shot peening machine, including a connecting rod shot peening fixture according to any of the above embodiments.
[0010] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects: The entire connecting rod shot peening fixture is installed on the horizontal worktable of the shot peening chamber. The second limiting block on the vertical base is higher than the two first limiting blocks. The operator can place the long connecting rod at an angle into the space enclosed by the second and two first limiting blocks. At this time, one end of the long connecting rod abuts against the two first limiting blocks, and the other end abuts against the second limiting block. The three limiting blocks are used to restrict the position of the left and right ends of the long connecting rod and to support the long connecting rod in the vertical direction. By making reasonable use of the vertical space of the shot peening chamber, the long connecting rod can be placed at an angle in the vertical direction, ensuring that the long connecting rod can be completely inserted into the shot peening chamber. There is no need to change the position of the two ends of the long connecting rod during shot peening, thus improving shot peening efficiency. At the same time, it ensures that the door of the shot peening chamber can be closed during shot peening, ensuring the safety of the external operators.
[0011] Furthermore, the large and small circular baffles are used to shield the end faces of the large and small rings of the connecting rod that are close to the shot peening mechanism, respectively, to prevent the shot peening mechanism from affecting the front end faces of the two rings when it peens the ring walls of the large and small rings. Attached Figure Description
[0012] Figure 1This is a front view of a connecting rod shot peening fixture according to an exemplary embodiment of the present disclosure.
[0013] Figure 2 This is a left view of a shot peening machine according to an exemplary embodiment of the present disclosure.
[0014] Explanation of reference numerals: 1. Long connecting rod; 2. Shot peening mechanism; 3. Horizontal worktable; 10. Vertical base; 11. Rear base; 111. First horizontal bar; 112. Second horizontal bar; 113. First vertical bar; 12. Front base; 121. Second vertical bar; 13. Screw; 21. First limiting block; 22. Second limiting block; 31. Large circular baffle; 32. Small circular baffle. Detailed Implementation
[0015] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.
[0016] In this disclosure, unless otherwise stated, directional terms such as "upper," "lower," "front," "rear," "left," and "right" are used for ease of description based on the drawing orientations of the corresponding figures, while "inner" and "outer" are defined based on the contours of the corresponding components themselves. Terms such as "first" and "second" used in this disclosure are used to distinguish one element from another and do not have sequential or importance implications. Furthermore, when the following description refers to the figures, unless otherwise indicated, the same numbers in different figures represent the same or similar elements.
[0017] Please see Figure 1 and Figure 2 This disclosure provides a special fixture for shot peening a connecting rod, including a vertical base 10, two first limiting blocks 21, a second limiting block 22, a large circular baffle 31, and a small circular baffle 32. The vertical base 10 is mounted on a horizontal worktable 3. The two first limiting blocks 21 are detachably connected to the vertical base 10 and are located at the lower and side portions of the small ring of the long connecting rod 1, respectively. The first limiting blocks 21 restrict the position of one end of the long connecting rod 1. The second limiting blocks 22 are detachably connected to the vertical base 10 and are located diagonally below the large ring of the long connecting rod 1. The height of the second limiting blocks 22 on the vertical base 10 is higher than that of the two first limiting blocks 21. The second limiting blocks 22 restrict the position of the other end of the long connecting rod 1. The large circular baffle 31 and the small circular baffle 32 are connected to the second limiting block 22 and are used to block the end face of the large ring of the long connecting rod 1 that is close to the shot peening mechanism 2. The small circular baffle 32 is connected to one of the two first limiting blocks 21 and is used to block the end face of the small ring of the long connecting rod 1 that is close to the shot peening mechanism 2.
[0018] Understandably, the entire connecting rod shot peening fixture is installed on the horizontal worktable 3 of the shot peening chamber. The second limiting block 22 is higher than the two first limiting blocks 21 on the vertical base 10. The operator can place the long connecting rod 1 at an angle into the space enclosed by the second limiting block 22 and the two first limiting blocks 21. At this time, one end of the long connecting rod 1 abuts against the two first limiting blocks 21, and the other end abuts against the second limiting block 22. The three limiting blocks are used to restrict the position of the left and right ends of the long connecting rod 1 and to support the long connecting rod 1 in the vertical direction. By making reasonable use of the vertical space of the shot peening chamber, the long connecting rod 1 can be placed at an angle in the vertical direction, ensuring that the long connecting rod 1 can be completely inserted into the shot peening chamber. There is no need to change the position of the two ends of the long connecting rod 1 during shot peening, thus improving the shot peening efficiency. At the same time, it ensures that the door of the shot peening chamber can be closed during shot peening, ensuring the safety of the external operators.
[0019] Furthermore, the large circular baffle 31 and the small circular baffle 32 are used to shield the end faces of the large and small rings of the connecting rod that are close to the shot peening mechanism 2, so as to prevent the front end faces of the two rings from being affected when the shot peening mechanism 2 peens shot onto the ring walls of the large and small rings.
[0020] In one embodiment, three screws 13 are installed on the vertical base 10. The second limiting block 22 and the two first limiting blocks 21 are respectively provided with threaded holes at the ends near the vertical base 10, and the screws 13 are screwed into the threaded holes.
[0021] In one embodiment, the vertical base 10 includes a front base 12 and a rear base 11, which are arranged opposite to each other. The rear base 11 includes a first horizontal bar 111, a second horizontal bar 112, and two first vertical bars 113. The two first vertical bars 113 are spaced apart along the left and right direction of the horizontal worktable 3. The two ends of the first horizontal bar 111 are respectively connected to the two first vertical bars 113. One end of the second horizontal bar 112 is connected to the first vertical bar 113, and the other end extends away from the large ring end of the connecting rod. Three screws 13 are respectively installed on the first horizontal bar 111 and the two first vertical bars 113.
[0022] In one embodiment, the first horizontal bar 111 is provided with a plurality of mounting holes spaced apart in the horizontal direction, the first vertical bar 113 is provided with a plurality of mounting holes in the vertical direction, and the screw 13 is used to connect to one of the plurality of mounting holes.
[0023] In one embodiment, the front base 12 includes two second vertical rods 121, which are arranged opposite to each other and are respectively used to support the second limiting block 22 of the large ring of the long connecting rod 1 and the first limiting block 21 of the lower part of the small ring.
[0024] Secondly, this disclosure provides a shot peening machine, including a connecting rod shot peening fixture according to any of the above embodiments.
[0025] This invention has been described through embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of this invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, this invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this invention.
Claims
1. A special fixture for shot peening connecting rods, characterized in that, include: Vertical base (10) is installed on horizontal workbench (3); Two first limiting blocks (21) are detachably connected to the vertical base (10) respectively, and are located at the lower part and side of the small ring of the long connecting rod (1). The first limiting blocks (21) are used to limit the position of one end of the long connecting rod (1). The second limiting block (22) is detachably connected to the vertical base (10) and is located diagonally below the large ring of the long connecting rod (1). The height of the second limiting block (22) on the vertical base (10) is higher than that of the two first limiting blocks (21). The second limiting block (22) is used to limit the position of the other end of the long connecting rod (1); and A large circular ring baffle (31) and a small circular ring baffle (32) are provided. The large circular ring baffle (31) is connected to the second limiting block (22) and is used to block the end face of the large ring of the long connecting rod (1) that is close to the shot peening mechanism (2). The small circular ring baffle (32) is connected to one of the two first limiting blocks (21) and is used to block the end face of the small ring of the long connecting rod (1) that is close to the shot peening mechanism (2).
2. The special fixture for shot peening of connecting rods according to claim 1, characterized in that, Three screws (13) are installed on the vertical base (10). The second limiting block (22) and the two first limiting blocks (21) are respectively provided with threaded holes at the ends near the vertical base (10). The screws (13) are screwed into the threaded holes.
3. The connecting rod shot peening fixture according to claim 2, characterized in that, The vertical base (10) includes a front base (12) and a rear base (11), which are arranged opposite to each other. The rear base (11) includes a first horizontal bar (111), a second horizontal bar (112), and two first vertical bars (113). The two first vertical bars (113) are spaced apart along the left and right directions of the horizontal worktable (3). The two ends of the first horizontal bar (111) are respectively connected to the two first vertical bars (113). One end of the second horizontal bar (112) is connected to the first vertical bar (113), and the other end extends away from the large ring end of the connecting rod. The three screws (13) are respectively installed on the first horizontal bar (111) and the two first vertical bars (113).
4. The connecting rod shot peening fixture according to claim 3, characterized in that, The first horizontal bar (111) has a plurality of mounting holes spaced apart in the horizontal direction, and the first vertical bar (113) has a plurality of mounting holes in the vertical direction. The screw (13) is used to connect to one of the plurality of mounting holes.
5. The connecting rod shot peening fixture according to claim 4, characterized in that, The front base (12) includes two second vertical rods (121), which are arranged opposite to each other and are respectively used to support the second limiting block (22) of the large ring of the long connecting rod (1) and the first limiting block (21) of the lower part of the small ring.
6. A shot peening machine, characterized in that, The connecting rod shot peening fixture includes any one of claims 1-5.