A tool bit that is easy to replace and calibrate

Abstract

The utility model relates to processing field, concretely is a tool bit convenient to replace and calibrate, including cutting head, locking mechanism and adjusting ring. Cutting head one end is equipped with the cutting edge, and the other end is connected cutting seat, connecting seat, plug -in rod, arc clamping block and a plurality of limit insert rods in proper order. The inner wall of locking mechanism is provided with plug -in groove and three installation slots, and the installation slot is inserted and connected the telescopic rod, and the telescopic rod one end extends into the plug -in groove and welds the sliding block, and the other end extends the mechanism outer wall and is equipped with the mounting head, the inner wall of plug -in groove is equipped with the annular slot and the sector slot matched with the sliding block, and the top is equipped with the insertion hole matched with the limit insert rod. The tool bit realizes radial fixed through the plug -in rod and the arc clamping block cooperation annular slot, and the limit insert rod and insertion hole inlay ensure axial positioning, and push telescopic rod can realize the quick dismounting without tools, has the advantages such as convenient replacement, accurate calibration, stable connection, reliability etc.

Description

Technical Field

[0001] This utility model relates to the field of machining, specifically to a tool head that is easy to replace and calibrate. Background Technology

[0002] In the field of machining, cutting tools, as a key component of machine tools, are widely used in various precision machining operations, such as milling, drilling, and turning. These tools require frequent changes of the cutting head to adapt to different machining tasks; therefore, the connection and fixing mechanism of the cutting head is crucial to machining efficiency and accuracy.

[0003] Traditional tool head connection methods often rely on threaded structures or similar mechanical fixing methods. Changing tool heads often requires additional tools, making the process cumbersome and time-consuming, thus reducing production efficiency. At the same time, threaded connections are prone to damage to components due to overtightening during the tightening process, or loosening under vibration, increasing calibration difficulty and maintenance costs, and limiting the improvement of overall machining performance. Utility Model Content

[0004] The purpose of this invention is to address the above-mentioned shortcomings and provide a tool head that is easy to replace and calibrate. This tool head achieves quick replacement through a unique plug-in and locking structure, solving the technical problem that existing tool head connection methods often rely on threaded structures or similar mechanical fixing methods, and that tool head replacement often requires additional tools, making the operation cumbersome and time-consuming, thus reducing production efficiency.

[0005] The purpose of this utility model is achieved through the following means: a tool head that is easy to replace and calibrate, comprising a cutting head, a locking mechanism, and an adjusting ring. The cutting head is installed at the bottom of the locking mechanism, and the adjusting ring is disposed on the outer wall of the locking mechanism. One end of the cutting head is provided with a cutting edge, and one end of the cutting edge is connected to a tool holder. The end of the tool holder away from the cutting edge is provided with a connecting seat, and the end of the connecting seat away from the tool holder is provided with a plug rod. An arc-shaped locking block is provided on the plug rod away from the connecting seat, and a limit plug rod is provided on the end of the arc-shaped locking block away from the plug rod. Several limit plug rods are provided. The inner wall of the locking mechanism has slots. The locking mechanism has three sets of mounting slots evenly distributed on the inner wall near the top. A telescopic rod is movably inserted into the mounting slot on the inner wall of the locking mechanism. The telescopic rod passes through the slot and the outer wall of the locking mechanism. A return spring is fixedly installed at one end of the mounting slot, and the other end of the return spring is fixedly connected to the telescopic rod. The locking mechanism has a socket at the top of the slot that matches the limiting rod. A sliding block is welded to one end of the telescopic rod inside the slot. An installation head is provided at one end of the telescopic rod on the outer wall of the locking mechanism. An annular slot that matches the sliding block is opened on the inner wall of the slot. A fan-shaped slot is opened at the top of the slot.

[0006] The curved surface of the arc-shaped locking block engages with the fan-shaped slot on the inner wall of the locking mechanism to achieve initial radial positioning and alignment, ensuring smooth insertion of the cutting head. Multiple limiting rods provide multiple fixing points in the circumferential direction, significantly enhancing the cutting head's torsional resistance and overall connection rigidity after installation, preventing rotation or loosening under cutting force. The preload provided by the return spring ensures the telescopic rod and its end sliding block always tend to move inward into the slot. When the cutting head's insertion rod is inserted into the slot, the inclined surface of the arc-shaped locking block overcomes the spring force, squeezing the sliding block outward to make room for insertion. After the arc-shaped locking block passes the sliding block, the return spring causes the sliding block to quickly rebound and engage in the space behind the arc-shaped locking block, forming an axial lock. This achieves rapid and reliable locking of the cutting head, with a self-locking characteristic and simple, intuitive operation. The annular slot provides space and track for the radial movement of the sliding block, while the fan-shaped slot ensures that the limiting rod can pass through unimpeded and eventually be inserted into the top hole, achieving the synergistic effect of circumferential limiting and axial locking.

[0007] Furthermore, the inner wall of the adjusting ring is evenly provided with three sets of sliders, and the outer wall of the locking mechanism is evenly provided with three sets of slides. The slides are movably installed with the sliders. The top of the slider is installed with an installation shaft, and a push rod is movably installed on the installation shaft. The end of the push rod away from the installation shaft is connected to the installation head through a rotating shaft.

[0008] When the operator rotates the adjusting ring, the rotational motion of the ring is converted into its own axial movement through the guide of the slider and the slide rail. The axial movement of the ring then pushes the mounting head through the push rod. The mounting head drives the telescopic rod to move radially outward against the elastic force of the return spring, thereby forcing the sliding block to disengage from the annular slot. This provides an external, centralized, and labor-saving unlocking control method. Simply rotating the ring can simultaneously control the unlocking of three locking points, greatly facilitating the disassembly process of the cutting head.

[0009] Furthermore, a reinforcing rib is provided at the connection between the tool holder and the connecting seat. The reinforcing rib has a triangular structure and is integrally formed with the tool holder and the connecting seat. The number of reinforcing ribs is 1, which is evenly distributed along the circumference of the tool holder.

[0010] The structural design principle of reinforcing ribs is to utilize the superior stability of a triangular structure to enhance the rigidity of critical load-bearing areas. Through a one-piece molding manufacturing process, potential weak points at the joints are eliminated.

[0011] Furthermore, the top of the sliding block is set as a flat surface, and the bottom of the sliding block is set as an inclined surface.

[0012] The inclined surface at the bottom of the sliding block forms an inlet ramp, allowing the arc-shaped block to smoothly press against this ramp and push the sliding block backward during cutting head insertion. This significantly reduces the force required for insertion and achieves a smooth insertion experience. Meanwhile, the flat top provides maximum contact area when engaging and locking with the corresponding plane of the arc-shaped block, ensuring reliable and stable locking and effectively preventing accidental disengagement under axial impact.

[0013] Furthermore, the outer wall of the locking mechanism is provided with scale lines, which are evenly distributed along the circumference of the locking mechanism.

[0014] After changing the cutting head, the operator can precisely adjust and calibrate the circumferential angle of the cutting edge by observing the relative position of a certain mark on the cutting head and the scale line, ensuring that it is completely consistent with the machining requirements or the angle used last time.

[0015] Furthermore, the top of the limiting rod is provided with a hemispherical guide head, and the guide head and the limiting rod are integrally formed.

[0016] Utilizing the excellent guiding properties of the spherical surface, even with slight alignment deviations, the hemispherical head can easily slide into the socket entrance when the limiting probe approaches the socket, automatically correcting minor positional errors and achieving fast and accurate alignment and insertion.

[0017] The beneficial effects of this invention are as follows: the cutting head achieves rapid replacement and precise calibration through a unique plug-in and locking structure. The cutting head is radially fixed by the annular groove of the locking mechanism, which engages with the plug rod and the arc-shaped locking block, while the fitting of the limiting plug rod and the insertion hole ensures accurate axial positioning. During operation, simply pushing the telescopic rod releases the constraint on the arc-shaped locking block via the sliding block, eliminating the need for tools during cutting head disassembly and significantly improving replacement efficiency. The return spring maintains a constant thrust on the telescopic rod, ensuring the stability of the locked state and preventing loosening during processing. This structure ensures assembly repeatability and reduces maintenance costs, while avoiding the problems of easy wear or excessive tightness associated with traditional threaded connections. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the cutting head structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the locking mechanism;

[0021] Figure 4 This utility model Figure 3 Enlarged view of the structure at point A.

[0022] In the diagram: 100, cutting head; 101, tool holder; 102, cutting edge; 103, connecting seat; 104, insertion rod; 105, arc-shaped locking block; 106, limiting insertion rod; 200, locking mechanism; 201, slot; 202, mounting groove; 203, insertion hole; 204, slide rail; 205, mounting head; 206, fan-shaped slot; 207, telescopic rod; 208, return spring; 209, annular slot; 210, sliding block; 300, adjusting ring; 301, slider; 302, mounting shaft; 303, push rod. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] In this embodiment, refer to Figures 1-4 The present invention relates to a tool head that is easy to replace and calibrate, comprising a cutting head 100, a locking mechanism 200, and an adjusting ring 300. The cutting head 100 is mounted on the bottom of the locking mechanism 200, and the adjusting ring 300 is disposed on the outer wall of the locking mechanism 200. One end of the cutting head 100 is provided with a cutting edge 102, and one end of the cutting edge 102 is connected to a tool holder 101. The end of the tool holder 101 away from the cutting edge 102 is provided with a connecting seat 103. The end of the connecting seat 103 away from the tool holder 101 is provided with a plug rod 104. The plug rod 104 away from the connecting seat 103 is provided with an arc-shaped locking block 105. The end of the arc-shaped locking block 105 away from the plug rod 104 is provided with a limit plug rod 106, and several limit plug rods 106 are provided. The inner wall of the locking mechanism 200 is provided with a slot 201. Three sets of mounting slots 202 are evenly provided on the inner wall near the top. A telescopic rod 207 is movably inserted into the inner wall of the locking mechanism 200 in the mounting slot 202. The telescopic rod 207 passes through the slot 201 and the outer wall of the locking mechanism 200. A return spring 208 is fixedly installed at one end inside the mounting slot 202. The other end of the return spring 208 is fixedly connected to the telescopic rod 207. The locking mechanism 200 has a socket 203 at the top of the slot 201 that matches the limiting plug 106. A sliding block 210 is welded to one end of the telescopic rod 207 in the slot 201. An installation head 205 is provided at one end of the telescopic rod 207 on the outer wall of the locking mechanism 200. An annular slot 209 matching the sliding block 210 is provided on the inner wall of the slot 201. A fan-shaped slot 206 is provided at the top of the slot 201.

[0025] The curved surface of the arc-shaped locking block 105 engages with the fan-shaped slot 206 on the inner wall of the locking mechanism 200 to achieve initial radial positioning and alignment, ensuring that the cutting head 100 can be smoothly inserted into place. The design of multiple limiting rods 106 provides multiple fixing points in the circumferential direction, which greatly enhances the torsional resistance and overall connection rigidity of the cutting head 100 after installation, preventing rotation or loosening under cutting force. The preload provided by the return spring 208 pushes the telescopic rod 207 and its end sliding locking block 210 to always tend to move into the slot 201. When the insertion rod 104 of the cutting head 100 is inserted into the slot 201, the inclined surface of the arc-shaped locking block 105 on it overcomes the spring force and squeezes the sliding locking block 210 outward to make room for insertion. After the arc-shaped locking block 105 slides past the sliding locking block 210, under the action of the return spring 208, the sliding locking block 210 will quickly rebound and lock into the empty space behind the arc-shaped locking block 105, forming an axial lock. This achieves rapid and reliable locking of the cutting head 100, and the process has a self-locking characteristic, making operation simple and intuitive. The annular slot 209 provides movement space and a track for the radial movement of the sliding locking block 210, while the fan-shaped slot 206 ensures that the limiting rod 106 can pass through unobstructed and ultimately insert into the top insertion hole 203, achieving a synergistic effect of circumferential limiting and axial locking.

[0026] Three sets of sliders 301 are evenly arranged on the inner wall of the adjusting ring 300, and three sets of slides 204 are evenly opened on the outer wall of the locking mechanism 200. The slides 204 are movably installed with the sliders 301. The top of the sliders 301 is equipped with an installation shaft 302, and a push rod 303 is movably installed on the installation shaft 302. The end of the push rod 303 away from the installation shaft 302 is connected to the installation head 205 through a rotating shaft.

[0027] When the operator rotates the adjusting ring 300, the rotational motion of the ring is converted into its axial movement through the guidance of the slider 301 and the slide rail 204. The axial movement of the ring then pushes the mounting head 205 through the push rod 303. The mounting head 205 drives the telescopic rod 207 to move radially outward against the elastic force of the return spring 208, thereby forcing the sliding block 210 to disengage from the annular slot 209. This provides an external, centralized, and labor-saving unlocking control method, which allows for simultaneous unlocking of three locking points with a simple rotation of the ring, greatly facilitating the disassembly process of the cutting head 100.

[0028] A reinforcing rib is provided at the connection between the tool holder 101 and the connecting seat 103. The reinforcing rib has a triangular structure and is integrally formed with the tool holder 101 and the connecting seat 103. There are 4 reinforcing ribs, which are evenly distributed around the circumference of the tool holder 101.

[0029] The reinforcing rib's structural design utilizes the superior stability of a triangular structure to enhance the rigidity of critical stress areas. Through a one-piece molding manufacturing process, potential weak points at the connection are eliminated, significantly improving the structural strength and resistance to bending and deformation at the connection between the tool holder 101 and the connecting seat 103. This ensures that cutting forces are effectively transmitted from the cutting edge 102 to the entire tool holder, reducing stress concentration, extending the service life of the cutting head 100, and guaranteeing machining accuracy.

[0030] The top of the sliding block 210 is set to a flat surface, and the bottom of the sliding block 210 is set to an inclined surface.

[0031] The inclined surface at the bottom of the sliding block 210 forms an inlet ramp, allowing the arc-shaped block 105 to smoothly press against this ramp and push the sliding block 210 backward during insertion of the cutting head 100. This significantly reduces the force required for insertion and achieves a smooth insertion experience. The flat top of the sliding block 210 provides maximum contact area when engaging and locking with the corresponding plane of the arc-shaped block 105, ensuring reliable and stable locking and effectively preventing accidental disengagement under axial impact.

[0032] The outer wall of the locking mechanism 200 is provided with scale lines, which are evenly distributed around the circumference of the locking mechanism 200, and the accuracy of the scale lines is 1°.

[0033] After changing the cutting head, the operator can precisely adjust and calibrate the circumferential angle of the cutting edge 102 by observing the relative position of a certain mark on the cutting head 100 and the scale line, ensuring that it is completely consistent with the machining requirements or the angle used last time.

[0034] The top of the limiting rod 106 is provided with a hemispherical guide head, and the guide head and the limiting rod 106 are integrally formed.

[0035] Utilizing the excellent guiding characteristics of the spherical surface, when the limiting insertion rod 106 approaches the insertion hole 203, even with a slight centering deviation, the hemispherical head can easily slide into the entrance of the insertion hole 203, automatically correcting the slight positional error, achieving fast and accurate alignment and insertion, reducing assembly difficulty and the requirements for operational precision, and making the operation of changing the cutting head smoother and faster.

[0036] The working process of a tool head that is easy to replace and calibrate in this embodiment is as follows: During installation, the insertion rod 104 of the cutting head 100 is inserted into the slot 201 of the locking mechanism 200. The arc-shaped locking block 105 on the insertion rod uses its inclined surface to press against the bottom inclined surface of the sliding locking block 210, forcing the telescopic rod 207 connected to the sliding locking block to move outward radially against the elastic force of the return spring 208, making room for the passage. After the arc-shaped locking block slides past the sliding locking block, the telescopic rod quickly rebounds under the action of the return spring, pushing the sliding locking block into the empty space behind the arc-shaped locking block, realizing axial automatic locking and preventing the cutting head from falling off. The limiting insertion rod 106 is then inserted into the corresponding insertion hole 203 on the inner wall of the locking mechanism. This multi-point mating design forms multiple fixed points in the circumferential direction, which greatly enhances the anti-torsion ability and overall rigidity after connection, preventing the tool head from rotating or loosening during cutting. During disassembly, the adjusting ring 300 is pushed. The slider 301 inside the ring moves along the slide 204, converting the pushing motion into axial displacement. Simultaneously, the push rod 303 pushes the mounting heads 205 of the three telescopic rods 207, overcoming the spring force and causing all sliding blocks to exit from the locking position synchronously. This allows the cutting head to be easily pulled out, achieving one-click centralized unlocking. After replacing the cutting head, the circumferential angle of the cutting edge can be quickly and accurately restored or set by rotating the cutting head to align the markings with the required scale, ensuring machining consistency.

[0037] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A tool head that is easy to replace and calibrate, comprising a cutting head (100), a locking mechanism (200), and an adjusting ring (300), wherein the cutting head (100) is mounted on the bottom of the locking mechanism (200), and the adjusting ring (300) is disposed on the outer wall of the locking mechanism (200), characterized in that: One end of the cutting head (100) is provided with a cutting edge (102), and one end of the cutting edge (102) is connected to a tool holder (101). The end of the tool holder (101) away from the cutting edge (102) is provided with a connecting seat (103). The end of the connecting seat (103) away from the tool holder (101) is provided with a plug rod (104). The plug rod (104) away from the connecting seat (103) is provided with an arc-shaped locking block (105). The end of the arc-shaped locking block (105) away from the plug rod (104) is provided with a limiting plug rod (106). Several limiting plug rods (106) are provided. The locking mechanism (200) has a slot (201) on its inner wall. Three sets of mounting slots (202) are evenly distributed on the inner wall of the locking mechanism (200) near the top. A telescopic rod (207) is movably inserted into the mounting slot (202) on the inner wall of the locking mechanism (200). The telescopic rod (207) passes through the slot (201) and the outer wall of the locking mechanism (200). A return spring (208) is fixedly installed at one end inside the mounting slot (202), and the other end of the return spring (208) is fixed to the telescopic rod (207). The locking mechanism (200) is located at the top of the slot (201) and has a socket (203) that matches the limiting plug (106). The telescopic rod (207) is located inside the slot (201) and has a sliding block (210) welded to one end. The telescopic rod (207) is located at the outer wall of the locking mechanism (200) and has an installation head (205). The inner wall of the slot (201) has an annular slot (209) that matches the sliding block (210). The top of the slot (201) has a fan-shaped slot (206).

2. The tool head that is easy to replace and calibrate according to claim 1, characterized in that: The inner wall of the adjusting ring (300) is evenly provided with three sets of sliders (301), and the outer wall of the locking mechanism (200) is evenly provided with three sets of slides (204). The slides (204) are movably installed with the sliders (301). The top of the sliders (301) is equipped with an installation shaft (302), and the installation shaft (302) is movably equipped with a push rod (303). The end of the push rod (303) away from the installation shaft (302) is connected to the installation head (205) through a rotating shaft.

3. The tool head that is easy to replace and calibrate according to claim 1, characterized in that: A reinforcing rib is provided at the connection between the tool holder (101) and the connecting seat (103). The reinforcing rib has a triangular structure and is integrally formed with the tool holder (101) and the connecting seat (103). There are 4 reinforcing ribs, which are evenly distributed along the circumference of the tool holder (101).

4. The tool head that is easy to replace and calibrate according to claim 1, characterized in that: The top of the sliding block (210) is set as a flat surface, and the bottom of the sliding block (210) is set as an inclined surface.

5. The tool tip that is easy to replace and calibrate according to claim 1, characterized in that: The outer wall of the locking mechanism (200) is provided with scale lines, which are evenly distributed around the circumference of the locking mechanism (200) and the accuracy of the scale lines is 1°.

6. The tool head that is easy to replace and calibrate according to claim 1, characterized in that: The top of the limiting rod (106) is provided with a hemispherical guide head, and the guide head and the limiting rod (106) are integrally formed.

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