Multi-angle grinding mechanism for large-pitch internal thread blade corner chamfering
By designing a multi-angle grinding mechanism for chamfering the cutting edge of large-pitch internal threads, the problems of complex grinding head replacement and imprecise adjustment were solved, enabling rapid replacement and precise adjustment, thereby improving production efficiency and processing quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI SIWEIKE WHORL TOOL CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-05-29
AI Technical Summary
The existing thread cutting tool chamfering and grinding device is complicated to operate when changing the grinding head, which affects production efficiency and is not precise enough, resulting in unstable processing quality.
A multi-angle grinding mechanism for chamfering the cutting edge of a large-pitch internal thread was designed. By setting up a connecting structure and a fixing structure, the grinding device can be quickly replaced and precisely adjusted. The design of friction ring and limit rod enhances connection stability, and the use of anti-slip pad and limit block improves clamping and fixing effect.
It enables quick replacement and precise adjustment of the grinding head, improving production efficiency and ensuring consistent and accurate processing quality.
Smart Images
Figure CN224295417U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thread chamfering grinding mechanism, and in particular to a multi-angle grinding mechanism for chamfering the cutting edge of a large pitch internal thread. Background Technology
[0002] A thread cutting tool chamfering and grinding device is a specialized piece of equipment used for chamfering thread cutting tools. Chamfering refers to grinding the cutting edge of a cutting tool, typically used to improve the tool's cutting performance, extend its lifespan, and ensure accuracy and quality during machining.
[0003] Existing technologies, such as the utility model patent with publication number CN220881329U, disclose a chamfering and grinding device. This patent uses a frame and an injection mold body. A mounting bracket is fixedly connected to the top left side of the frame, and an inclined guide rail is fixedly connected between the mounting bracket and the frame. The injection mold body is placed in a limiting groove at the top of the frame, and the injection mold body is located to the lower left of the inclined guide rail. In this utility model, a servo motor drives a reciprocating screw to rotate, allowing the first and second mounting seats to slide synchronously within the rail cavity. Subsequently, the chamfering assembly and the grinding assembly move towards the injection mold body. A first working motor drives the chamfering cutter to rotate, and a second working motor drives the grinding head to rotate. The chamfering cutter first cuts the edges and corners of the injection mold body to form a chamfer. Then, the grinding head moves to the chamfer position to remove burrs at the chamfer. The entire process is simple to operate, and the chamfering and grinding action is smooth.
[0004] The inventors discovered in daily use that the design of existing chamfering and grinding devices makes changing grinding heads cumbersome. Replacement often requires disassembling complex structures or using specialized tools, making the operation inconvenient. This increases production downtime, reduces overall work efficiency, and after grinding head replacement, the device's adjustment mechanism is not precise enough, resulting in the grinding head's position or angle not accurately aligned with the original settings. This affects subsequent processing quality, such as inconsistent chamfer angles or substandard precision. Different types of grinding heads have different interface or specification requirements. If the equipment has poor compatibility with different grinding heads, additional adapters or adjustments are needed during replacement, making the process even more complex and time-consuming. Utility Model Content
[0005] The purpose of this invention is to address the shortcomings of existing technologies.
[0006] To solve the above technical problems, this utility model provides a multi-angle grinding mechanism for chamfering the cutting edge of a large-pitch internal thread, comprising: four supports and a connecting structure. A worktable is fixedly connected to the upper end of each support. Two guide rails are fixedly connected to the upper surface of the worktable. A three-axis transmission device is mounted on the surface of the guide rails. A transmission rod is fixedly connected to the lower end of the three-axis transmission device. A grinding device is provided at the lower end of the transmission rod. The grinding device is connected to the transmission rod via a connecting structure. The lower end of the transmission rod is provided with a connecting structure. The connecting structure includes... The device includes a connecting rod, which is fixedly connected to a drive shaft. A connecting ring is fixedly connected to the arc surface of the drive shaft. The connecting ring is fixedly connected to a grinding device. Two slots are formed on the inner wall of the connecting ring. Two sliding grooves are formed on the arc surface of the connecting rod. A locking block is slidably connected to the inner wall of the sliding groove. The locking block engages with the slot. A spring is installed inside the sliding groove. The two ends of the spring are fixedly connected to the sliding groove and the locking block, respectively. Several friction rings are fixedly connected to the arc surface of the connecting rod. Several friction grooves are formed on the inner wall of the connecting ring.
[0007] The effect achieved by the above components is as follows: when it is necessary to connect the grinding device and the transmission rod, the connecting ring is pulled to move, the connecting ring drives the slot and the grinding device to move, then the connecting ring is aligned with the connecting rod, then the connecting ring is inserted into the connecting rod, then the connecting ring presses the locking block, the locking block slides on the inner wall of the slide groove, after moving to the appropriate position, the spring is stretched to drive the locking block into the slot for fixation, the friction ring retracts, and then the friction ring is locked into the friction groove for fixation.
[0008] Preferably, the friction ring has an annular cross-section and is a rubber ring.
[0009] The effect achieved by the above components is that the friction ring can increase the friction between the connecting rod and the connecting ring, preventing slippage when the connecting rod and the connecting ring are connected.
[0010] Preferably, a limiting rod is fixedly connected inside the slide groove, and the limiting rod is slidably connected to the locking block.
[0011] The effect achieved by the above components is that the limiting rod can limit the movement of the locking block, preventing the locking block from shifting during use.
[0012] Preferably, the limiting rod has a circular cross-section, and the spring is sleeved on the arc surface of the limiting rod.
[0013] The effect achieved by the above components is that the limiting rod can limit the spring, prevent the spring from deforming during use, and improve the service life of the spring.
[0014] Preferably, a fixed structure is provided on one side of the worktable. The fixed structure includes a slide rail, which is fixedly connected to the worktable. Two slide rods are slidably connected to the inner wall of the slide rail. A connecting block is fixedly connected to the arc surface of the slide rod. A screw is fixedly connected to the side of the two connecting blocks that are close to each other. A threaded tube is threaded to the end of the two screws that are close to each other. Opposite threads are formed on the inner walls of the two ends of the threaded tube. A fixing block is fixedly connected to the side of the slide rail that is close to the threaded tube. The fixing block is rotatably connected to the threaded tube. A connecting rod is fixedly connected to the upper end of the slide rod. A limit block is fixedly connected to the end of the connecting rod that is away from the slide rod.
[0015] The effect achieved by the above components is as follows: when it is necessary to clamp and fix the threaded cutting tool, the threaded tube is rotated and moved. The threaded tube rotates on the inner wall of the fixing block, the threaded tube drives the screw to move, the screw drives the connecting block to move, the connecting block drives the slide rod to move, the slide rod slides on the inner wall of the slide rail, and the connecting rod drives the connecting rod to move. The connecting rod drives the limiting block to move, and the limiting block clamps and fixes the threaded cutting tool.
[0016] Preferably, anti-slip pads are fixedly connected to the sides of the two limiting blocks that are close to each other, and the anti-slip pads are rubber pads.
[0017] The effect achieved by the above components is that the anti-slip pad can increase the friction between the limiting block and the threaded cutting tool, and prevent the limiting block from sliding when clamping the threaded cutting tool.
[0018] Preferably, a round rod is fixedly connected inside the slide rail, and the round rod is slidably connected to the slide bar.
[0019] The effect achieved by the above components is that the round rod can limit the sliding rod, prevent the sliding rod from deviating during sliding, and improve the stability of the sliding rod.
[0020] Compared with related technologies, the multi-angle grinding mechanism for chamfering the cutting edge of a large-pitch internal thread provided by this utility model has the following beneficial effects:
[0021] This invention provides a multi-angle grinding mechanism for chamfering the cutting edge of large-pitch internal threads. By setting up a connection structure, it addresses the issue that existing chamfering grinding devices often result in cumbersome grinding head replacements. Replacement often requires disassembling complex structures or using specialized tools, making operation inconvenient. This increases production downtime, reduces overall work efficiency, and after grinding head replacement, the device's adjustment mechanism may not be precise enough, leading to inaccurate alignment of the grinding head's position or angle with the original settings. This affects subsequent processing quality, such as inconsistent chamfer angles or substandard precision. Different types of grinding heads have different interface or specification requirements. If the equipment has poor compatibility with different grinding heads, additional adapters or adjustments are needed during replacement, making the process more complex and time-consuming. This device allows for convenient and rapid grinding head replacement, not only improving replacement efficiency but also facilitating the replacement of grinding heads with arbitrary angles.
[0022] By setting up a fixed structure, it is possible to easily fix different types of threaded cutting tools and prevent them from moving during grinding. Attached Figure Description
[0023] Figure 1 A schematic diagram of a multi-angle grinding mechanism for chamfering the cutting edge of a large-pitch internal thread provided by this utility model;
[0024] Figure 2 for Figure 1 The diagram shows the connection structure.
[0025] Figure 3 for Figure 1 The diagram shows the fixed structure.
[0026] Figure 4 for Figure 3 The enlarged view of point A shown.
[0027] The diagram is labeled as follows: 1. Support; 2. Workbench; 3. Guide rail; 4. Three-axis transmission device; 5. Grinding device; 6. Connecting structure; 61. Connecting rod; 62. Connecting ring; 63. Locking block; 64. Locking groove; 65. Slide groove; 66. Spring; 67. Limiting rod; 68. Friction ring; 69. Friction groove; 7. Fixing structure; 701. Limiting block; 702. Slide rail; 703. Anti-slip pad; 704. Connecting rod; 705. Slide rod; 706. Fixing block; 707. Threaded pipe; 708. Screw; 709. Round rod; 710. Connecting block; 8. Transmission rod. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0029] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0030] Please see Figures 1 to 4 This utility model provides a multi-angle grinding mechanism for chamfering the cutting edge of a large-pitch internal thread, comprising: four supports 1 and a connecting structure 6. A worktable 2 is fixedly connected to the upper end of the support 1. Two guide rails 3 are fixedly connected to the upper surface of the worktable 2. A three-axis transmission device 4 is installed on the surface of the guide rails 3. A transmission rod 8 is fixedly connected to the lower end of the three-axis transmission device 4. A grinding device 5 is provided at the lower end of the transmission rod 8. The grinding device 5 is connected to the transmission rod 8 by means of the connecting structure 6. A fixed structure 7 is provided on one side of the worktable 2.
[0031] In the embodiments of this utility model, please refer to Figure 1 and Figure 2The connecting structure 6 includes a connecting rod 61, which is fixedly connected to the drive shaft. A connecting ring 62 is fixedly connected to the arc surface of the drive shaft. The connecting ring 62 is fixedly connected to the grinding device 5. Two slots 64 are opened on the inner wall of the connecting ring 62. Two sliding grooves 65 are opened on the arc surface of the connecting rod 61. A locking block 63 is slidably connected to the inner wall of the sliding groove 65. The locking block 63 engages with the slot 64. A spring 66 is installed inside the sliding groove 65. The two ends of the spring 66 are fixedly connected to the sliding groove 65 and the locking block 63, respectively. Several friction rings 68 are fixedly connected to the arc surface of the connecting rod 61. Several friction grooves 69 are opened on the inner wall of the connecting ring 62. When the grinding device 5 needs to be connected to the transmission rod 8, the connecting ring 62 is pulled to move, causing the slot 64 and the grinding device 5 to move. The connecting ring 62 is then aligned with the connecting rod 61 and inserted into the connecting rod 61. The connecting ring 62 then presses against the locking block 63, causing the locking block 63 to slide along the inner wall of the slide groove 65. After moving to the appropriate position, the spring 66 stretches, causing the locking block 63 to engage in the slot 64 for fixation. The friction ring 68 retracts and engages in the friction groove 69 for fixation. The friction ring 68 has an annular cross-section and is made of rubber. The friction ring 68 increases the friction between the connecting rod 61 and the connecting ring 62, preventing slippage during connection. A limit rod 67 is fixedly connected inside the slide groove 65, and the limit rod 67 is slidably connected to the locking block 63. The limiting rod 67 can limit the locking block 63 to prevent it from shifting during use. The limiting rod 67 has a circular cross-section, and the spring 66 is fitted onto the arc surface of the limiting rod 67. The limiting rod 67 can also limit the spring 66 to prevent it from deforming during use, thus improving the service life of the spring 66.
[0032] In the embodiments of this utility model, please refer to Figure 3 and Figure 4The fixed structure 7 includes a slide rail 702, which is fixedly connected to the worktable 2. Two slide rods 705 are slidably connected to the inner wall of the slide rail 702. A connecting block 710 is fixedly connected to the arc surface of the slide rod 705. A screw 708 is fixedly connected to the side of the two connecting blocks 710 that are close to each other. A threaded tube 707 is threaded to the end of the two screws 708 that are close to each other. Opposite threads are opened on the inner walls of the two ends of the threaded tube 707. A fixing block 706 is fixedly connected to the side of the slide rail 702 that is close to the threaded tube 707. The fixing block 706 is rotatably connected to the threaded tube 707. A connecting rod 704 is fixedly connected to the upper end of the slide rod 705. A limit block 701 is fixedly connected to the end of the connecting rod 704 that is away from the slide rod 705. When it is necessary to clamp and fix the threaded cutting tool, the threaded tube 707 is rotated and moved. The threaded tube 707 rotates on the inner wall of the fixing block 706, which drives the screw 708 to move. The screw 708 drives the connecting block 710 to move, and the connecting block 710 drives the slide rod 705 to move. The slide rod 705 slides on the inner wall of the slide rail 702, which in turn drives the connecting rod 704 to move. The connecting rod 704 drives the limiting block 701 to move, and the limiting block 701 clamps and fixes the threaded cutting tool. Anti-slip pads 703 are fixedly connected to the sides of the two limiting blocks 701 that are close to each other. The anti-slip pads 703 are rubber pads. The anti-slip pads 703 can increase the friction between the limiting block 701 and the threaded cutting tool and prevent the limiting block 701 from sliding when clamping the threaded cutting tool. A round rod 709 is fixedly connected inside the slide rail 702, and the round rod 709 is slidably connected to the slide rod 705. The round rod 709 can limit the sliding rod 705, preventing the sliding rod 705 from deviating during sliding and improving the sliding stability of the sliding rod 705;
[0033] The working principle of the multi-angle grinding mechanism for chamfering the cutting edge of a large-pitch internal thread provided by this utility model is as follows: When it is necessary to connect the grinding device 5 with the transmission rod 8, the connecting ring 62 is pulled to move. The connecting ring 62 drives the slot 64 and the grinding device 5 to move. Then, the connecting ring 62 is aligned with the connecting rod 61, and then the connecting ring 62 is inserted into the connecting rod 61. Then, the connecting ring 62 presses the locking block 63, and the locking block 63 slides on the inner wall of the slide groove 65. After moving to the appropriate position, the spring 66 is stretched to drive the locking block 63. The stretching action causes the locking block 63 to engage with the locking groove 64 for fixation. The friction ring 68 then contracts and engages with the friction groove 69 for fixation. The friction ring 68 increases the friction between the connecting rod 61 and the connecting ring 62, preventing slippage when they are connected. The limiting rod 67 limits the locking block 63 to prevent it from shifting during use. The limiting rod 67 also limits the spring 66 to prevent it from deforming during use, thus improving its service life.
[0034] When it is necessary to clamp and fix the threaded cutting tool, the threaded tube 707 is rotated and moved. The threaded tube 707 rotates on the inner wall of the fixing block 706, which drives the screw 708 to move. The screw 708 drives the connecting block 710 to move, and the connecting block 710 drives the slide rod 705 to move. The slide rod 705 slides on the inner wall of the slide rail 702, which drives the connecting rod 704 to move. The connecting rod 704 drives the limiting block 701 to move, and the limiting block 701 clamps and fixes the threaded cutting tool. The anti-slip pad 703 can increase the friction between the limiting block 701 and the threaded cutting tool, preventing the limiting block 701 from sliding when clamping the threaded cutting tool. The round rod 709 can limit the slide rod 705, preventing the slide rod 705 from deviating when sliding, and improving the stability of the slide rod 705.
[0035] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.
[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A multi-angle grinding mechanism for chamfering the cutting edge of a large-pitch internal thread, characterized in that, include: Four supports (1) and a connecting structure (6) are provided. A workbench (2) is fixedly connected to the upper end of the support (1). Two guide rails (3) are fixedly connected to the upper surface of the workbench (2). A three-axis transmission device (4) is installed on the surface of the guide rails (3). A transmission rod (8) is fixedly connected to the lower end of the three-axis transmission device (4). A grinding device (5) is provided at the lower end of the transmission rod (8). The grinding device (5) is connected to the transmission rod (8) by means of the connecting structure (6). The lower end of the transmission rod (8) is provided with a connecting structure (6). The connecting structure (6) includes a connecting rod (61). The connecting rod (61) is fixedly connected to the transmission shaft. The arc surface of the transmission shaft is fixed. A connecting ring (62) is fixedly connected to the grinding device (5). The inner wall of the connecting ring (62) has two slots (64). The arc surface of the connecting rod (61) has two sliding grooves (65). The inner wall of the sliding groove (65) is slidably connected to a locking block (63). The locking block (63) engages with the slot (64). A spring (66) is provided inside the sliding groove (65). The two ends of the spring (66) are fixedly connected to the sliding groove (65) and the locking block (63) respectively. Several friction rings (68) are fixedly connected to the arc surface of the connecting rod (61). Several friction grooves (69) are provided on the inner wall of the connecting ring (62).
2. The multi-angle grinding mechanism for chamfering the cutting edge of a large-pitch internal thread according to claim 1, characterized in that, The friction ring (68) has a circular cross-section and is a rubber ring.
3. The multi-angle grinding mechanism for chamfering the cutting edge of a large-pitch internal thread according to claim 1, characterized in that, The sliding groove (65) is fixedly connected to a limiting rod (67), and the limiting rod (67) is slidably connected to the locking block (63).
4. The multi-angle grinding mechanism for chamfering the cutting edge of a large-pitch internal thread according to claim 3, characterized in that, The limiting rod (67) has a circular cross-section, and the spring (66) is sleeved on the arc surface of the limiting rod (67).
5. A multi-angle grinding mechanism for chamfering the cutting edge of a large-pitch internal thread according to claim 1, characterized in that, A fixed structure (7) is provided on one side of the workbench (2). The fixed structure (7) includes a slide rail (702). The slide rail (702) is fixedly connected to the workbench (2). Two slide rods (705) are slidably connected to the inner wall of the slide rail (702). A connecting block (710) is fixedly connected to the arc surface of the slide rod (705). A screw (708) is fixedly connected to the side of the two connecting blocks (710) that are close to each other. The two screws (708) are close to each other. One end of the slide rail (702) is threaded to a threaded tube (707), and the inner walls of both ends of the threaded tube (707) are provided with opposite threads. A fixing block (706) is fixedly connected to the side of the slide rail (702) near the threaded tube (707). The fixing block (706) is rotatably connected to the threaded tube (707). The upper end of the slide rod (705) is fixedly connected to a connecting rod (704), and a limit block (701) is fixedly connected to the end of the connecting rod (704) away from the slide rod (705).
6. A multi-angle grinding mechanism for chamfering the cutting edge of a large-pitch internal thread according to claim 5, characterized in that, The two limiting blocks (701) are fixedly connected to anti-slip pads (703) on the side that is close to each other. The anti-slip pads (703) are rubber pads.
7. A multi-angle grinding mechanism for chamfering the cutting edge of a large-pitch internal thread according to claim 5, characterized in that, A round rod (709) is fixedly connected inside the slide rail (702), and the round rod (709) is slidably connected to the slide rod (705).