Positioning tool for milling limit block
By designing a milling and positioning fixture for the limit block that meshes with a rotating motor and a transmission rod, the limit block can be automatically rotated, solving the problem of manual rotation required in existing devices and improving processing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU ZENGRUI INTELLIGENT CONTROL TECHNOLOGY CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-08-04
AI Technical Summary
The current milling and positioning fixture for finite blocks requires manual flipping when machining both sides, which is time-consuming, labor-intensive, and reduces machining efficiency.
A milling and positioning fixture for a limit block was designed. It uses a rotating motor and a transmission rod to achieve 180° automatic rotation of the limit block through the meshing of the first bevel gear and the second bevel gear. It is then combined with a servo motor to drive a bidirectional lead screw for clamping.
The automatic flipping of the limit block is realized, which improves processing efficiency, reduces manual intervention, and enhances the practicality of the device.
Smart Images

Figure CN224587576U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of limit block processing technology, specifically to a limit block milling and positioning fixture. Background Technology
[0002] Limit blocks are functional components widely used in machinery, automation equipment, and engineering structures. Their core function is to limit the travel range of moving parts and prevent excessive displacement or collision, thereby ensuring the safe and stable operation of the equipment. Limit blocks limit the displacement or rotation angle of moving parts (such as sliders, pistons, and rotating shafts) by means of physical blocking or trigger signals. Their functions include: travel control, safety protection, positioning reference, and sequence control.
[0003] As described in announcement number CN219747732U, this positioning fixture facilitates positioning. The device includes a mounting platform, a moving assembly, and a clamping assembly. The upper end of the mounting platform has a moving groove, into which the adjustable positioning moving assembly is located. The moving assembly includes a servo motor, a bidirectional lead screw, a nut seat, and a connecting rod. The right end of the servo motor has the bidirectional lead screw, and the middle of the bidirectional lead screw has the nut seat. This positioning fixture, which facilitates positioning, allows adjustment of the distance between two sets of clamping plates by controlling the nut seat on the bidirectional lead screw via the servo motor.
[0004] The device does not have a flipping function during use. When both sides need to be processed, manual flipping is required, which is time-consuming, labor-intensive, and reduces the processing efficiency of the device. Utility Model Content
[0005] The purpose of this utility model is to provide a milling and positioning fixture for limit blocks, so as to solve the problem mentioned in the background art that the existing device does not have a flipping function, and when both sides need to be processed, manual flipping is required, which is time-consuming, labor-intensive and reduces the processing efficiency of the device.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a milling and positioning fixture for a limiting block, a support platform, a support leg at the lower end of the support platform, and a movable plate at the upper end of the support platform.
[0007] Also includes:
[0008] A slot is formed on the surface of a movable plate. A rotating motor is installed at the upper end of the movable plate and is fixedly connected to the movable plate. A transmission rod is installed inside the slot, and the upper end of the transmission rod is connected to the output end of the rotating motor. A first bevel gear is provided at the lower end of the transmission rod and is fixedly connected to the transmission rod. A connecting piece is connected to the surface of the first bevel gear.
[0009] Preferably, the connector includes a second bevel gear, which meshes with a first bevel gear. A second bearing is connected to one side of the second bevel gear, and the surface of one side of the second bearing is mounted on the inner wall of the slot. A rotating rod is provided on the other side of the second bevel gear, and the rotating rod is connected to the second bevel gear by welding.
[0010] Preferably, the bottom of the support leg is provided with a base plate, and the base plate is fixedly connected to the support leg; the inner side of the support leg is provided with a crossbeam, and the crossbeam is fixedly connected to the support leg.
[0011] Preferably, a positioning sleeve is provided at one end of the rotating rod, and the positioning sleeve is fixedly connected to the rotating rod.
[0012] Preferably, the upper surface of the support platform is provided with an installation groove, a servo motor is installed on one side of the support platform and the servo motor is fixedly connected to the support platform, a bidirectional lead screw is installed inside the installation groove, a lead screw sleeve is installed on the surface of the bidirectional lead screw and two sets of lead screw sleeves are provided, and a first bearing is connected to the end of the bidirectional lead screw.
[0013] Preferably, the surface of the lead screw sleeve is connected to the moving plate.
[0014] Preferably, a controller is mounted on the outer surface of the support platform, and the output terminal of the controller is electrically connected to the input terminal of the rotary motor and the servo motor.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] This invention utilizes a rotating motor and a transmission rod that work together. The rotating motor drives the transmission rod, which in turn drives the first and second bevel gears to rotate the rod and positioning sleeve, thus achieving a 180° automatic rotation of the limiting block. This greatly improves the practicality of the device, enabling rotation without manual intervention. It solves the problem of traditional devices lacking a flipping function, requiring manual rotation when both sides need to be processed, which is time-consuming, labor-intensive, and reduces the processing efficiency of the device. Attached Figure Description
[0017] Figure 1 This is a three-dimensional view of the overall structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 3 This is a schematic diagram of the internal structure of the present invention;
[0020] Figure 4 This is a diagram showing the internal structure of the movable plate of this utility model;
[0021] In the diagram: 1. Support platform; 2. Support leg; 3. Base plate; 4. Crossbeam; 5. Controller; 6. Mounting slot; 7. Servo motor; 8. Two-way lead screw; 9. Lead screw sleeve; 10. First bearing; 11. Moving plate; 12. Slot; 13. Rotating motor; 14. Transmission rod; 15. First bevel gear; 151. Connecting piece; 16. Second bevel gear; 17. Second bearing; 18. Rotating rod; 19. Positioning sleeve. 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] Please see Figure 1-4 An embodiment of this utility model provides: a milling and positioning fixture for a limiting block, a support platform 1, a support leg 2 at the lower end of the support platform 1, and a movable plate 11 at the upper end of the support platform 1.
[0024] Also includes:
[0025] A slot 12 is formed on the surface of a movable plate 11. A rotary motor 13 is installed at the upper end of the movable plate 11 and is fixedly connected to the movable plate 11. A transmission rod 14 is installed inside the slot 12, and the upper end of the transmission rod 14 is connected to the output end of the rotary motor 13. A first bevel gear 15 is provided at the lower end of the transmission rod 14 and is fixedly connected to the transmission rod 14. A connector 151 is connected to the surface of the first bevel gear 15. The connector 151 includes a second bevel gear 16 and the second bevel gear 16 meshes with the first bevel gear 15. A second bearing 17 is connected to one side of the second bevel gear 16, and the surface of one side of the second bearing 17 is installed on the inner wall of the slot 12. A rotating rod 18 is provided on the other side of the second bevel gear 16 and is connected to the second bevel gear 16 by welding.
[0026] The rotating motor 13 is started, which drives the transmission rod 14 connected to it to rotate. The transmission rod 14 then drives the first bevel gear 15 connected to it to rotate. The first bevel gear 15 then drives the second bevel gear 16 connected to it to rotate. The second bevel gear 16 then drives the rotating rod 18 connected to it to rotate. The rotating rod 18 then drives the positioning sleeve 19 connected to it to rotate.
[0027] Please see Figure 2The bottom of the support leg 2 is provided with a base plate 3, and the base plate 3 is fixedly connected to the support leg 2. The inner side of the support leg 2 is provided with a crossbeam 4, and the crossbeam 4 is fixedly connected to the support leg 2. When this product is in use, the crossbeam 4 can evenly distribute the force to various parts of the equipment, avoiding local overload. This balanced force distribution ensures the stability of the equipment structure and can effectively prevent the equipment from being damaged due to concentrated load.
[0028] Please see Figure 4 One end of the rotating rod 18 is provided with a positioning sleeve 19, and the positioning sleeve 19 is fixedly connected to the rotating rod 18. When this product is in use, the positioning sleeve 19 can fix and clamp the limiting block.
[0029] Please see Figure 3 The upper surface of the support platform 1 is provided with an installation groove 6. A servo motor 7 is installed on one side of the support platform 1 and is fixedly connected to the support platform 1. A bidirectional lead screw 8 is installed inside the installation groove 6. A lead screw sleeve 9 is installed on the surface of the bidirectional lead screw 8, and two sets of lead screw sleeves 9 are provided. The end of the bidirectional lead screw 8 is connected to a first bearing 10. The surface of the lead screw sleeve 9 is connected to the moving plate 11. When this product is in use, the servo motor 7 is started, which drives the bidirectional lead screw 8 connected to it to rotate. This causes the bidirectional lead screw 8 to drive the lead screw sleeve 9 connected to it to rotate, thereby causing the lead screw sleeve 9 to move in the horizontal direction. This causes the lead screw sleeve 9 to drive the moving plate 11 connected to it to move, thereby fixing and clamping the limit block. The first bearing 10 can increase the stability of the bidirectional lead screw 8 when rotating.
[0030] Please see Figure 1 A controller 5 is installed on the outer surface of the support platform 1, and the output end of the controller 5 is electrically connected to the input end of the rotary motor 13 and the servo motor 7. When this product is in use, the controller 5 can control the switching of the rotary motor 13 and the servo motor 7.
[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A milling and positioning fixture for a limit block, including a support table (1), a support leg (2) is provided at the lower end of the support table (1), and a movable plate (11) is provided at the upper end of the support table (1). characterized in that Also includes: A slot (12) is formed on the surface of a movable plate (11). A rotating motor (13) is installed at the upper end of the movable plate (11) and the rotating motor (13) is fixedly connected to the movable plate (11). A transmission rod (14) is installed inside the slot (12) and the upper end of the transmission rod (14) is connected to the output end of the rotating motor (13). A first bevel gear (15) is provided at the lower end of the transmission rod (14) and the first bevel gear (15) is fixedly connected to the transmission rod (14). A connector (151) is connected to the surface of the first bevel gear (15).
2. The limit block milling positioning tooling of claim 1, wherein: The connector (151) includes a second bevel gear (16), which meshes with the first bevel gear (15). A second bearing (17) is connected to one side of the second bevel gear (16), and the surface of one side of the second bearing (17) is mounted on the inner wall of the slot (12). A rotating rod (18) is provided on the other side of the second bevel gear (16), and the rotating rod (18) is connected to the second bevel gear (16) by welding.
3. The limit block milling positioning tooling of claim 1, wherein: The bottom of the support leg (2) is provided with a base plate (3), and the base plate (3) is fixedly connected to the support leg (2). The inner side of the support leg (2) is provided with a crossbeam (4), and the crossbeam (4) is fixedly connected to the support leg (2).
4. The limit block milling positioning tooling of claim 2, wherein: One end of the rotating rod (18) is provided with a positioning sleeve (19), and the positioning sleeve (19) is fixedly connected to the rotating rod (18).
5. The limit block milling positioning tooling of claim 1, wherein: The upper surface of the support platform (1) is provided with an installation groove (6). A servo motor (7) is installed on one side of the support platform (1), and the servo motor (7) is fixedly connected to the support platform (1). A bidirectional lead screw (8) is installed inside the installation groove (6). A lead screw sleeve (9) is installed on the surface of the bidirectional lead screw (8), and two sets of lead screw sleeves (9) are provided. The end of the bidirectional lead screw (8) is connected to a first bearing (10).
6. The limit block milling positioning tooling of claim 5, wherein: The surface of the lead screw sleeve (9) is connected to the moving plate (11).
7. The limit block milling positioning tooling of claim 1, wherein: The outer surface of the support platform (1) is equipped with a controller (5), and the output end of the controller (5) is electrically connected to the input end of the rotary motor (13) and the servo motor (7).