A positioning fixture for pin shaft machining
By designing a combination of worktable, slide rail, adjustment plate, clamping rod and flusher, the inconvenience of changing and cleaning problems when the pin machining positioning fixture is adapted to different specifications of pins is solved, realizing rapid positioning and waste liquid recycling, and improving the degree of automation and cleaning efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGZHOU ZIGUANG NEEDLE ROLLER BEARING CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-07
AI Technical Summary
Existing pin machining positioning fixtures are inconvenient to replace when adapting to pins of different specifications, and the cleaning plate is difficult to handle coolant or lubricant, resulting in cleaning difficulties.
A positioning fixture was designed, comprising a worktable, slide rail, adjusting plate, clamping rod, movable pressure plate, and flushing device. The movement of the clamping rod is controlled by a cylinder, and the clamping deviation is detected by a telescopic rod and spring. Combined with the ramp plate and flushing device, automated clamping and waste liquid recycling are achieved.
It enables quick and easy positioning and clamping of pins of different sizes, reduces manual operation, improves the automation level of the device, can adapt to pins of different sizes, and can effectively collect and recycle waste liquid, reducing cleaning difficulty.
Smart Images
Figure CN224464227U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pin positioning technology, and in particular to a positioning fixture for pin machining. Background Technology
[0002] A pin is a common mechanical connecting element, mainly used to connect two or more parts, allowing them to rotate or be fixed relative to each other. During the machining of a pin, a positioning fixture is usually required to assist in positioning.
[0003] Chinese patent CN216178552U discloses a positioning fixture for pin machining. The device clamps the pin through a first T-shaped part and a second T-shaped part. A cleaning plate can clean the debris generated during machining. The device has a simple structure and is easy to use. However, although the design of the inner arc plate can adapt to some pins of different specifications, it is still difficult to change them. The cleaning plate can only move in a straight line. During the drilling process, coolant or lubricant is usually used. The cleaning plate is difficult to clean the liquid. Therefore, a positioning fixture for pin machining is proposed. Summary of the Invention
[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a positioning fixture for pin machining.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A positioning fixture for pin machining includes a worktable, a slide rail mounted on the worktable, an adjusting plate slidably connected to the slide rail, a first clamping rod mounted on one side of the adjusting plate, a second clamping rod disposed on one side of the first clamping rod, a movable pressure plate connected to one side of the second clamping rod, a telescopic rod disposed on the outer side of the second clamping rod, a baffle mounted on the worktable, a ramp plate disposed between the baffles, a lower drain groove opened at one end of the ramp plate, and a collection box mounted on the bottom side of the lower drain groove.
[0007] Preferably, two slide rails are symmetrically installed on the worktable, the adjusting plate is slidably connected to the two slide rails, a first cylinder is provided between the slide rails, the telescopic end of the first cylinder is connected to the rear side of the adjusting plate, and multiple first clamping rods are provided, all of which are screwed onto the front side of the adjusting plate.
[0008] Preferably, the movable pressure plate is slidably connected to the top of the worktable, and limit blocks are provided on both sides of the top of the worktable. The two ends of the movable pressure plate are spring-connected to the limit blocks. A rotating rod is threadedly connected to the top surface of the limit block, and a pressing block is connected to the bottom end of the rotating rod. A slider is provided on one side of the pressing block, and the slider moves vertically on the inner wall of the limit block. The bottom end of the pressing block is movably connected to both ends of the movable pressure plate.
[0009] Preferably, the top of the workbench is provided with a plurality of "T"-shaped slots, the tail end of the second clamping rod is inserted into the slots, the top and bottom sides of the front end of the second clamping rod are both equipped with a first V-shaped frame, a second V-shaped frame is installed on one end of the first clamping rod, and the second V-shaped frame is located in the middle of the first V-shaped frame.
[0010] Preferably, a horizontal plate is installed on both ends of the second V-shaped frame, and a hook is fixed on each horizontal plate. A telescopic rod is installed on both sides of the first V-shaped frame, and one end of each telescopic rod is fixedly installed on the workbench. The telescopic rod includes an outer rod and an inner rod. The outer rod is fixed on the workbench, and a pressure sensing block is installed inside the outer rod. The pressure sensing block and the inner rod are connected by a spring. A retaining ring is installed on the outer end of the inner rod, and the retaining ring is connected to the hook.
[0011] Preferably, a sinking trough is provided on the workbench, baffles are installed on both sides of the sinking trough, the ramp is installed on the top surface of the sinking trough, a flushing device is provided on one of the baffles, a conveying pipe is connected between the flushing device and the collection box, a liquid pump is installed on the conveying pipe, the flushing device is located at the high point of the ramp, and a filter screen frame is movably connected to one side of the collection box.
[0012] The beneficial effects of this utility model are:
[0013] This solution uses a first clamping rod and a second clamping rod to clamp pins of different sizes within a certain range. A telescopic rod can be connected to the first clamping rod, and the tension of a spring can quickly and easily detect whether there is a large deviation in the size of each clamping. A movable pressure plate facilitates the installation and removal of the second clamping rod. A rotating rod and a squeezing block help position the movable pressure plate. A flushing device can recycle waste liquid to wash away residual debris on the slope plate.
[0014] This solution reduces the possibility of continuous manual operation during the clamping and positioning of pins of different sizes, reduces the situation where waste liquid and debris cannot be handled during equipment cleaning, improves the automated clamping effect of the device, can adapt to the positioning of pins of different sizes, is easy to operate, and also improves the centralized collection effect of the device, which can collect waste liquid and use the collected waste liquid for circulation rinsing. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of a positioning fixture for pin machining proposed in this utility model when it is clamped.
[0016] Figure 2 This is a top view of a positioning fixture for pin machining proposed in this utility model.
[0017] Figure 3 This is a schematic diagram of the structure of a positioning fixture for pin machining proposed in this utility model when it is opened;
[0018] Figure 4 This is a front view schematic diagram of the positioning fixture for pin machining proposed in this utility model when it is opened;
[0019] Figure 5 This is a structural diagram of the ramp and collection box section.
[0020] Figure 6 This is a schematic diagram of the main structure of the ramp and collection box.
[0021] In the diagram: 1. Workbench; 2. First cylinder; 3. Slide rail; 4. Adjusting plate; 5. First clamping rod; 6. Movable pressure plate; 7. Second clamping rod; 8. Rotating rod; 9. Baffle; 10. Conveying pipe; 11. Telescopic rod; 12. Lower drain trough; 13. Hook; 14. Flushing device; 15. Squeezing block; 16. Collection box; 17. Liquid pump; 18. Slot; 19. Inclined plate; 20. Filter screen frame. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0023] Example: Refer to Figure 1-6 A positioning fixture for pin machining includes a worktable 1, a slide rail 3 mounted on the worktable 1, an adjusting plate 4 slidably connected to the slide rail 3, a first clamping rod 5 mounted on one side of the adjusting plate 4, a second clamping rod 7 provided on one side of the first clamping rod 5, a movable pressure plate 6 connected to one side of the second clamping rod 7, a telescopic rod 11 provided on the outer side of the second clamping rod 7, a baffle 9 also mounted on the worktable 1, a ramp 19 provided between the baffles 9, a lower drain trough 12 opened at one end of the ramp 19, and a collection box 16 installed on the bottom side of the lower drain trough 12.
[0024] Specifically, two slide rails 3 are symmetrically installed on the workbench 1. The adjusting plate 4 is slidably connected to the two slide rails 3. A first cylinder 2 is set between the slide rails 3. The telescopic end of the first cylinder 2 is connected to the rear side of the adjusting plate 4 to facilitate the telescopic control of the first clamping rod 5. The first clamping rod 5 is provided with multiple screws installed on the front side of the adjusting plate 4 to facilitate the disassembly and replacement of the first clamping rod 5.
[0025] Furthermore, the movable pressure plate 6 is slidably connected to the top of the worktable 1 to limit the position of the second clamping rod 7 and prevent it from moving. Limiting blocks are provided on both sides of the top of the worktable 1. The two ends of the movable pressure plate 6 are spring-connected to the limiting blocks for easy automatic return. A rotating rod 8 is also threadedly connected to the top surface of the limiting block to facilitate adjustment of the height of the rotating rod 8. A pressing block 15 is connected to the bottom end of the rotating rod 8 to prevent the pressing block 15 from rotating along with the rotating rod 8. A slider is provided on one side of the pressing block 15. The slider moves vertically on the inner wall of the limiting block to ensure its vertical movement in the up and down direction. The bottom end of the pressing block 15 is movably connected to both ends of the movable pressure plate 6 to clamp the movable pressure plate 6.
[0026] Furthermore, multiple "T"-shaped slots 18 are provided on the top of the workbench 1. The tail end of the second clamping rod 7 is inserted into the slot 18 to achieve a supporting effect. The top and bottom sides of the front end of the second clamping rod 7 are equipped with first V-shaped frames. There is a gap between the two first V-shaped frames to facilitate the connection of the second V-shaped frames. A second V-shaped frame is installed on one end of the first clamping rod 5. The second V-shaped frame is located in the middle of the first V-shaped frame to avoid collision during the clamping process.
[0027] In this embodiment, transverse plates are installed on both ends of the second V-shaped frame, and hooks 13 are fixed on both transverse plates. Telescopic rods 11 are installed on both sides of the first V-shaped frame, and one end of each telescopic rod 11 is fixed on the workbench 1. The telescopic rod 11 includes an outer rod and an inner rod. The outer rod is fixed on the workbench 1, and a pressure sensing block is installed inside the outer rod. The pressure sensing block and the inner rod are connected by a spring. A retaining ring is installed on the outer end of the inner rod. The retaining ring is connected in the hook 13 and acts to detect the position of both ends of the second V-shaped frame, reducing the phenomenon of uneven applied force. The pressure sensing block can detect the problem of large clamping deviation in time.
[0028] A settling trough is provided on the workbench 1. Baffles 9 are installed on both sides of the settling trough. A ramp 19 is installed on the top surface of the settling trough to act on the waste liquid to flow in a uniform direction. A flusher 14 is provided on one of the baffles 9 to flush the impurities on the ramp 19 down. A conveying pipe 10 is connected between the flusher 14 and the collection box 16. A liquid pump 17 is installed on the conveying pipe 10 to facilitate the extraction and reuse of the filtered waste liquid. The flusher 14 is located at the high point of the ramp 19. A filter screen frame 20 is movably connected to one side of the collection box 16 to facilitate the collection and removal of waste debris.
[0029] Working principle: When the device is working, the second clamping rod 7 is placed into the slot 18, and then the rotating rod 8 is rotated upward. At this time, the pressing block 15 will gradually disengage from the movable pressure plate 6. Under the action of the spring, the movable pressure plate 6 will move to the upper side of the second clamping rod 7. After moving to the designated position, the rotating rod 8 is rotated again, and the pressing block 15 is used to position the movable pressure plate 6. Then, the first cylinder 2 is controlled to extend forward, and the first clamping rod 5 will gradually approach the second clamping rod 7. When the first clamping rod 5 moves to the designated position, one end of the telescopic rod 11 is pulled forward, so that the retaining ring is put on the retaining hook 13.
[0030] When the pin needs to be positioned, the first cylinder 2 is retracted and the first clamping rod 5 is opened. At this time, the pin is placed between the first clamping rod 5 and the second clamping rod 7 using the feeding device. Then the first cylinder 2 extends again until the pin is clamped. After clamping, observe whether there is a large deviation between the readings of the pressure sensor. If there is no deviation, it can continue to be used. If the deviation is large, it needs to be repaired in time to avoid deviation in the drilling position.
[0031] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0032] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.
[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A positioning jig for pin shaft machining, characterized by, include: A workbench (1) is provided with a slide rail (3), an adjustment plate (4) is slidably connected to the slide rail (3), a first clamping rod (5) is installed on one side of the adjustment plate (4), a second clamping rod (7) is provided on one side of the first clamping rod (5), a movable pressure plate (6) is connected to one side of the second clamping rod (7), a telescopic rod (11) is provided on the outside of the second clamping rod (7), a baffle (9) is also installed on the workbench (1), a ramp plate (19) is provided between the baffles (9), a lower drain groove (12) is opened at one end of the ramp plate (19), and a collection box (16) is installed on the bottom side of the lower drain groove (12).
2. A positioning fixture for pin shaft machining according to claim 1, characterized in that, Two slide rails (3) are symmetrically installed on the workbench (1). The adjusting plate (4) is slidably connected to the two slide rails (3). A first cylinder (2) is provided between the slide rails (3). The telescopic end of the first cylinder (2) is connected to the rear side of the adjusting plate (4). Multiple first clamping rods (5) are provided, all of which are screwed on the front side of the adjusting plate (4).
3. A positioning fixture for pin shaft machining according to claim 2, characterized in that, The movable pressure plate (6) is slidably connected to the top of the workbench (1). Limiting blocks are mounted on both sides of the top of the workbench (1). The two ends of the movable pressure plate (6) are spring-connected to the limiting blocks. A rotating rod (8) is threadedly connected to the top surface of the limiting block. A pressing block (15) is connected to the bottom end of the rotating rod (8). A slider is provided on one side of the pressing block (15). The slider moves vertically on the inner wall of the limiting block. The bottom end of the pressing block (15) is movably connected to both ends of the movable pressure plate (6).
4. The positioning fixture for pin shaft machining according to claim 3, characterized in that, The top of the workbench (1) is provided with a number of "T"-shaped slots (18). The tail end of the second clamping rod (7) is inserted into the slot (18). The top and bottom sides of the front end of the second clamping rod (7) are both equipped with a first V-shaped frame. A second V-shaped frame is installed on one end of the first clamping rod (5). The second V-shaped frame is located in the middle of the first V-shaped frame.
5. A positioning fixture for pin shaft machining according to claim 4, characterized in that, A horizontal plate is installed on both ends of the second V-shaped frame, and a hook (13) is fixed on each horizontal plate. A telescopic rod (11) is installed on both sides of the first V-shaped frame. One end of the telescopic rod (11) is fixed on the workbench (1). The telescopic rod (11) includes an outer rod and an inner rod. The outer rod is fixed on the workbench (1). A pressure sensing block is installed inside the outer rod. The pressure sensing block and the inner rod are connected by a spring. A retaining ring is installed on the outer end of the inner rod. The retaining ring is connected inside the hook (13).
6. A positioning fixture for pin shaft machining according to claim 5, characterized in that, The workbench (1) is provided with a sinking trough, and baffles (9) are installed on both sides of the sinking trough. The ramp (19) is installed on the top surface of the sinking trough. A flusher (14) is provided on one of the baffles (9). A conveying pipe (10) is connected between the flusher (14) and the collection box (16). A liquid pump (17) is installed on the conveying pipe (10). The flusher (14) is located at the high point of the ramp (19). A filter screen frame (20) is movably connected to one side of the collection box (16).