High-speed positioning jig for machining holes
By employing a coordinated clamping mechanism of positioning blocks, limit blocks, and movable blocks, combined with motor drive and sliding structure, the problems of low efficiency, insufficient precision, and vibration in traditional hole machining are solved, achieving efficient and precise hole machining.
Patent Information
- Application Number
- CN202522426831.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-17
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-11-17
AI Technical Summary
In traditional hole machining methods, frequent workpiece changes lead to low equipment utilization, insufficient machining efficiency and precision, and the lack of rigidity of traditional fixtures causes vibration and drill bit damage.
It adopts a three-way coordinated clamping mechanism consisting of positioning blocks, limit blocks, movable blocks, and motor drive, combined with a stable sliding structure and adjustable front limit components, to achieve rapid and accurate positioning and fixing of workpieces. The anti-slip design and the material drop groove protect the workpiece surface.
It improves the accuracy and efficiency of hole machining, reduces vibration and offset, enhances equipment utilization, and protects the workpiece surface, making it suitable for high-efficiency production lines.
Smart Images
Figure CN224939563U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining technology, specifically to a high-speed positioning fixture for machining holes. Background Technology
[0002] In industries such as machinery manufacturing, automotive parts, aerospace, and precision molds, hole machining is one of the most common and crucial processes. The accuracy, efficiency, and consistency of hole machining directly affect the assembly quality, performance, and production costs of products. In traditional hole machining methods, the workpiece is clamped on a general-purpose fixture, the workpiece datum is aligned, and the origin of the machining coordinate system is set. After each workpiece change, tedious edge finding, tool setting, and coordinate setting operations need to be performed again, which greatly reduces the effective cutting time of the machine tool, resulting in low equipment utilization. Moreover, during machining, traditional fixtures may vibrate due to insufficient rigidity or stability, affecting the surface quality of the hole and even causing damage to the drill bit. Utility Model Content
[0003] The purpose of this utility model is to address the shortcomings and deficiencies of existing technologies by providing a high-speed positioning fixture for machining holes that is simple in structure, reasonably designed, and easy to use. Through a three-way coordinated clamping mechanism consisting of a positioning block, a limiting block, a movable block, and a motor drive, it achieves rapid and accurate positioning and fixing of the workpiece. Its stable sliding structure and adjustable front limit component effectively improve machining accuracy and efficiency. At the same time, the anti-slip design and the material drop chute take into account both workpiece surface protection and operation cleanliness. The overall structure has a high degree of automation and is suitable for high-efficiency production lines.
[0004] To achieve the above objectives, this utility model adopts the following technical solution: it includes an operating platform; and further includes: A positioning block, which is fixedly installed on the upper side of the operating platform; The limiting block is fixedly installed on the left front side of the positioning block and on the operating platform. The movable block is located on the right side of the limiting block and is in contact with the operating platform; a sliding block is fixedly provided on the rear side of the movable block and slides through the sliding groove opened in the positioning block. The movable block is fixedly disposed on the rear side of the sliding block, and the movable block is slidably disposed on the slide rail of the operating platform on the rear side of the positioning block through the slide groove; The mobile motor is fixedly mounted on the rear side of the positioning block by a motor bracket, and a lead screw is provided on the output end of the mobile motor. The lead screw is threaded through the mobile block. The front limiting components consist of two components, which are respectively disposed on the front side of the limiting block and the movable block; The above technical solution involves placing the workpiece with the hole to be processed on the operating platform, with the left rear corner of the workpiece pressed against the angle between the positioning block and the limiting block. By starting the moving motor, the lead screw rotates to drive the moving block, causing the movable block to move and clamp the right side of the workpiece. Finally, the front side of the workpiece is clamped by the limiting block and the front limiting component on the front side of the movable block.
[0005] As a further improvement of this utility model, the front limiting component includes: A rotating shaft is screwed onto the front side of the limiting block and the movable block via a bearing, and a rotating platform is fixedly mounted on the front end of the rotating shaft. A rotating gear, wherein the rotating gear is sleeved and fixed on a rotating shaft; The drive motor is fixedly mounted on the outside of the limiting block and the movable block by a motor bracket, and a drive gear is connected to the output end of the drive motor, and the drive gear is meshed with the rotating gear. With the above technical solution design, after the workpiece is placed, the drive motor is started, causing the drive gear to mesh with the rotating gear and rotate, thus rotating the turntable and limiting the front side of the workpiece.
[0006] As a further improvement of this utility model, a support frame is fixedly provided on the rear side of the rotating table, and the support frame is a "U" shaped structure. A driving block is slidably passed through the support frame. A clamping block is fixedly provided on the rear side of the driving block. A driving motor is fixedly provided on the front side of the rotating table. After the output end of the driving motor passes through the rotating table, a screw is provided, and the screw is threaded through the driving block. By designing the above technical solution, starting the drive motor causes the screw to rotate and drive the drive block in a threaded manner, causing the clamping block to move backward and clamp the workpiece.
[0007] As a further improvement of this utility model, a connecting block is fixedly provided on the upper rear side of the movable block, the connecting block is in contact with the upper side of the positioning block, and the rear side of the connecting block is fixed to the movable block. Through the above technical solution design, the connecting block connects the movable block and the moving block, thereby strengthening the stability during movement.
[0008] As a further improvement of this utility model, anti-slip pads are provided on the inner walls of the limiting block and the movable block. Through the above technical solution design, the anti-slip pad can effectively increase friction and prevent scratches on the workpiece surface during clamping.
[0009] As a further improvement of this utility model, the operating platform is provided with a material discharge chute, and the material discharge chute is located between the limiting block and the movable block. Through the above technical solution design, the debris and coolant generated during the hole machining process can be directly discharged through the discharge chute, avoiding accumulation on the surface of the workpiece and the operating platform.
[0010] The working principle of this utility model is as follows: The workpiece to be machined is placed on the operating platform, with its left rear corner tightly abutting against the angle between the positioning block and the limiting block; this angle serves as the initial positioning reference, ensuring accurate workpiece positioning; the moving motor is started, and its output drives the lead screw to rotate; the lead screw is connected to the moving block via a thread, causing the moving block to slide along the slide rail on the rear side of the operating platform; the moving block is connected to the movable block via a sliding block, thereby driving the movable block to move horizontally; the movable block cooperates with the limiting block to apply pressure from the right side of the workpiece, clamping the workpiece between the positioning block and the limiting block; after the right side of the workpiece is clamped, two front limiting components limit the front side of the workpiece and... Clamping; the front limit components are located on the front side of the limit block and the movable block respectively; the working process of each front limit component is as follows: start the drive motor, the output end of the drive motor drives the drive gear to rotate; the drive gear meshes with the rotating gear, driving the rotating shaft to rotate; the rotating shaft is mounted on the limit block or movable block through bearings, and a rotating table is fixed at its front end; the rotating table rotates with the rotating shaft and is adjusted to the position of contacting the front side of the workpiece; further, start the drive motor, the output end of the drive motor drives the screw to rotate; the screw is connected to the drive block through threads, causing the drive block to move backward; a clamping block is fixed on the rear side of the drive block, the clamping block moves backward and presses the front side of the workpiece, achieving final clamping.
[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. By utilizing the cooperation of positioning blocks, limiting blocks, and movable blocks, combined with the front limiting component, the workpiece can be quickly and accurately clamped in the left, right, and front directions, improving processing efficiency and accuracy. 2. The moving block is driven by a slide rail and a lead screw, and the movable block is connected to the positioning block through a sliding block, ensuring smooth movement; the connecting block further strengthens the connection between the movable block and the moving block, reducing vibration and offset; 3. The front limit assembly adopts gear transmission and screw drive, which makes the turntable and clamping block adjustable to adapt to workpieces of different shapes and sizes, thus enhancing versatility. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model.
[0013] Figure 2 yes Figure 1 Enlarged view of part A.
[0014] Figure 3 yes Figure 1 A schematic diagram of the isometric structure in the northwest region.
[0015] Figure 4 yes Figure 3 Enlarged view of part B.
[0016] Figure 5 This is a schematic diagram of the workpiece clamping structure in a specific implementation method.
[0017] Explanation of reference numerals in the attached drawings: 1. Operating platform; 1-1. Material chute; 2. Positioning block; 3. Limiting block; 4. Movable block; 5. Sliding block; 6. Moving block; 7. Moving motor; 8. Lead screw; 9. Front limit assembly; 9-1. Rotating shaft; 9-2. Rotating table; 9-3. Rotating gear; 9-4. Transmission motor; 9-5. Transmission gear; 10. Support frame; 11. Drive block; 12. Clamping block; 13. Drive motor; 14. Screw; 15. Connecting block; 16. Anti-slip pad. Detailed Implementation
[0018] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Example
[0019] Please see Figures 1-5 This embodiment includes an operating platform 1; and also includes: Positioning block 2, which is fixedly disposed on the upper side of the operating platform 1; Limiting block 3 is fixedly disposed on the left front side of positioning block 2 and fixedly disposed on operating platform 1. Movable block 4 is located on the right side of limiting block 3 and is in contact with operating platform 1; a sliding block 5 is fixedly provided on the rear side of movable block 4 and slides through the sliding groove opened in positioning block 2; anti-slip pads 16 are provided on the inner walls of limiting block 3 and movable block 4; a material discharge chute 1-1 is provided in operating platform 1 and is located between limiting block 3 and movable block 4; The movable block 6 is fixedly disposed on the rear side of the sliding block 5, and the movable block 6 is slidably disposed on the slide rail of the operating platform 1 on the rear side of the positioning block 2 through the slide groove; a connecting block 15 is fixedly disposed on the upper rear side of the movable block 4, the connecting block 15 is in contact with the upper side of the positioning block 2, and the rear side of the connecting block 15 is fixed on the movable block 6. The mobile motor 7 is fixedly mounted on the rear side of the positioning block 2 via a motor bracket. The specific model of the mobile motor 7 is purchased directly from the market and installed and used according to actual usage requirements. The output end of the mobile motor 7 is provided with a lead screw 8, which is threadedly screwed into the mobile block 6. Two front limiting components 9 are respectively disposed in front of the limiting block 3 and the movable block 4; Through the above technical solution design, the workpiece with the hole to be processed is placed on the operating platform 1, and the left rear corner of the workpiece is pressed against the angle between the positioning block 2 and the limiting block 3. By starting the moving motor 7, the lead screw 8 is rotated to drive the moving block 6, so that the movable block 4 moves to clamp the right side of the workpiece. Finally, the front side of the workpiece is clamped by the limiting block 3 and the front limiting component 9 on the front side of the movable block 4. Example
[0020] Please see Figures 1-5 Based on Embodiment 1, a further improvement is made, wherein the front limiting component 9 includes: Rotating shaft 9-1 is screwed onto the front side of limiting block 3 and movable block 4 via bearings, and a rotating platform 9-2 is fixedly installed at the front end of rotating shaft 9-1. Rotating gear 9-3, wherein the rotating gear 9-3 is sleeved and fixed on the rotating shaft 9-1; The drive motor 9-4 is fixedly mounted on the outside of the limiting block 3 and the movable block 4 via a motor bracket. The specific model of the drive motor 9-4 is purchased and installed directly from the market according to actual usage requirements. A drive gear 9-5 is connected to the output end of the drive motor 9-4, and the drive gear 9-5 meshes with the rotating gear 9-3. With the above technical solution design, after the workpiece is placed, the drive motor 9-4 is started, which causes the drive gear 9-5 to mesh with the rotating gear 9-3 to rotate, causing the rotating table 9-2 to rotate and limit the front side of the workpiece. Example
[0021] Please see Figures 1-5 Based on Embodiment 1, a further improvement is made: a support frame 10 is fixedly installed on the rear side of the rotating platform 9-2, and the support frame 10 is U-shaped. A drive block 11 is slidably inserted inside the support frame 10. A clamping block 12 is fixedly installed on the rear side of the drive block 11. A drive motor 13 is fixedly installed on the front side of the rotating platform 9-2. The specific model of the drive motor 13 is purchased and installed directly from the market according to the actual usage requirements. After the output end of the drive motor 13 passes through the rotating platform 9-2, a screw 14 is provided, and the screw 14 is threadedly inserted into the drive block 11. With the above technical solution design, the drive motor 13 is started and the screw 14 rotates to drive the drive block 11 by thread, causing the clamping block 12 to move backward and clamp the workpiece.
[0022] When using this utility model, the workpiece with the hole to be processed is placed on the operating platform 1, so that the left rear corner of the workpiece is tightly abutted against the angle between the positioning block 2 and the limiting block 3; this angle serves as the initial positioning reference to ensure the accurate position of the workpiece; the moving motor 7 is started, and the output end of the moving motor 7 drives the lead screw 8 to rotate; the lead screw 8 is connected to the moving block 6 through a thread, so that the moving block 6 slides along the slide rail on the rear side of the operating platform 1; the moving block 6 is connected to the movable block 4 through the sliding block 5, thereby driving the movable block 4 to move horizontally; the movable block 4 cooperates with the limiting block 3 to apply pressure from the right side of the workpiece, clamping the workpiece between the positioning block 2 and the limiting block 3; after the right side of the workpiece is clamped, the front side of the workpiece is limited and clamped by two front limiting components 9; the front limiting components 9 are respectively located on the limiting block 3 and the limiting block 3. The front side of the movable block 4; the working process of each front limit component 9 is as follows: start the transmission motor 9-4, the output end of the transmission motor 9-4 drives the transmission gear 9-5 to rotate; the transmission gear 9-5 meshes with the rotating gear 9-3, driving the rotating shaft 9-1 to rotate; the rotating shaft 9-1 is mounted on the limit block 3 or the movable block 4 through the bearing, and a rotating table 9-2 is fixed at its front end; the rotating table 9-2 rotates with the rotating shaft 9-1 and is adjusted to a position in contact with the front side of the workpiece. Further, start the drive motor 13, the output end of the drive motor 13 drives the screw 14 to rotate; the screw 14 is connected to the drive block 11 through the thread, causing the drive block 11 to move backward; a clamping block 12 is fixed on the rear side of the drive block 11, the clamping block 12 moves backward and presses the front side of the workpiece, achieving final clamping.
[0023] Compared with the prior art, the beneficial effects of this utility model are: By utilizing the cooperation of positioning block 2, limiting block 3 and movable block 4, combined with front limiting component 9, the workpiece can be quickly and accurately clamped in the left and right and front directions, improving processing efficiency and accuracy. The movable block 6 is driven by the slide rail and the lead screw 8, and the moving block 4 is connected to the positioning block 2 through the sliding block 5, which ensures smooth movement; the connecting block 15 further strengthens the connection between the moving block 4 and the movable block 6, reducing vibration and offset; The front limit assembly 9 uses gear transmission and screw 14 drive, making the rotating table 9-2 and clamping block 12 adjustable to adapt to workpieces of different shapes and sizes, thus enhancing versatility.
[0024] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A high-speed positioning fixture for machining holes, comprising an operating platform (1); Its features are, Also includes: Positioning block (2), the positioning block (2) is fixedly set on the upper side of the operating platform (1); Limiting block (3), the limiting block (3) is fixedly set on the left front side of the positioning block (2), and the limiting block (3) is fixedly set on the operating platform (1); The movable block (4) is located on the right side of the limiting block (3) and is in contact with the operating platform (1); a sliding block (5) is fixedly provided on the rear side of the movable block (4) and slides through the sliding groove opened in the positioning block (2). The movable block (6) is fixedly disposed on the rear side of the sliding block (5), and the movable block (6) is slidably disposed on the slide rail of the operating platform (1) on the rear side of the positioning block (2) through the slide groove; The mobile motor (7) is fixedly mounted on the rear side of the positioning block (2) by a motor bracket, and a lead screw (8) is provided on the output end of the mobile motor (7). The lead screw (8) is threaded through the mobile block (6). Two front limit components (9) are provided, which are respectively located on the front side of the limit block (3) and the movable block (4).
2. The high-speed positioning fixture for machining holes according to claim 1, characterized in that: The aforementioned front limiting component (9) includes: Rotating shaft (9-1), the rotating shaft (9-1) is screwed to the front side of the limiting block (3) and the movable block (4) by bearings, and a rotating table (9-2) is fixedly provided at the front end of the rotating shaft (9-1). A rotating gear (9-3) is sleeved and fixed on a rotating shaft (9-1); The drive motor (9-4) is fixedly mounted on the outside of the limiting block (3) and the movable block (4) by a motor bracket, and a drive gear (9-5) is connected to the output end of the drive motor (9-4), and the drive gear (9-5) meshes with the rotating gear (9-3).
3. The high-speed positioning fixture for machining holes according to claim 2, characterized in that: A support frame (10) is fixedly installed on the rear side of the rotating platform (9-2), and the support frame (10) is a "U" shaped structure. A drive block (11) is slidably inserted inside the support frame (10). A clamping block (12) is fixedly installed on the rear side of the drive block (11). A drive motor (13) is fixedly installed on the front side of the rotating platform (9-2). After the output end of the drive motor (13) passes through the rotating platform (9-2), a screw (14) is installed. The screw (14) is threadedly inserted into the drive block (11).
4. The high-speed positioning fixture for machining holes according to claim 1, characterized in that: A connecting block (15) is fixedly provided on the upper rear side of the movable block (4). The connecting block (15) is in contact with the upper side of the positioning block (2), and the rear side of the connecting block (15) is fixed on the moving block (6).
5. A high-speed positioning fixture for machining holes according to claim 1, characterized in that: Anti-slip pads (16) are provided on the inner walls of the limiting block (3) and the movable block (4).
6. A high-speed positioning fixture for machining holes according to claim 1, characterized in that: The operating platform (1) is provided with a material discharge chute (1-1), and the material discharge chute (1-1) is located between the limiting block (3) and the movable block (4).