Simple quick-change cutter

Abstract

The utility model provides a simple quick-change cutter, which comprises a cutter handle and a cutter head arranged at the end part of the cutter handle, a first semicircular convex ring is arranged on the butt joint end face of the cutter head along the axial direction, a second semicircular convex ring is arranged on the butt joint end face of the cutter handle along the axial direction, and the first semicircular convex ring and the second semicircular convex ring are integrally formed. The circle center of the first semicircular protruding ring and the circle center of the second semicircular protruding ring are located on the axis of the cutter, and after the cutter handle and the cutter head are in butt joint, the first semicircular protruding ring and the second semicircular protruding ring are spliced to form a circular ring. According to the cutter convenient to machine, only the semicircular convex rings need to be arranged on the cutter head and the cutter handle in the axial direction, and the structure of the cutter convenient to machine is relatively simple. The machining of the semicircular convex ring can be completed by using common machining equipment, the butt-joint end face of the tool bit and the tool handle in the shape of the semicircular convex ring can be conveniently machined, the dependence on high-precision machining equipment is reduced, and the machining cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of mechanical design, and more particularly to a simple quick-change tool. Background Art

[0002] The description in this section merely provides background information related to the disclosure of the present utility model and does not constitute prior art.

[0003] In the prior art, when a tool is in operation, a toolholder is required to transmit the torque from the power source to the cutter head to achieve cutting of the workpiece. The tool structure requires that the torque between the toolholder and the cutter head be transmitted evenly and stably along the torque transmission path.

[0004] In the utility model patent application with application number 2025200884735, the tool handle and the tool head are connected by a straight-insert structure. That is, one of the two end faces where the tool handle meets the tool head is provided with two opposing curved petals, with two grooves between them. The other end face is provided with two protrusions that match the grooves and are inserted into the grooves. The tight fit between the curved petals and the protrusions ensures that torque can be evenly and stably transmitted from the tool handle to the tool head.

[0005] However, the structure in which the arc-shaped petal and the cam are matched has high requirements for machining accuracy, which makes it difficult to machine. Therefore, it is urgent to invent a tool that can achieve stable torque transmission and is easy to machine.

[0006] It should be noted that the above technical background is merely for the purpose of providing a clear and complete description of the technical solutions of the present invention and to facilitate understanding by those skilled in the art. It should not be assumed that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present invention. Summary of the Invention

[0007] The technical problem to be solved by the utility model is to provide a simple quick-change tool.

[0008] In order to solve the above technical problems, the utility model provides a simple quick-change tool, which includes a tool handle and a tool head installed at the end of the tool handle. The docking end face of the tool head is axially provided with a first semicircular convex ring, and the docking end face of the tool handle is axially provided with a second semicircular convex ring. The centers of the first semicircular convex ring and the second semicircular convex ring are located on the axis of the tool. When the tool handle and the tool head are docked, the first semicircular convex ring and the second semicircular convex ring are spliced ​​together to form a circular ring.

[0009] Preferably, the surfaces where the first semicircular convex ring and the second semicircular convex ring contact each other are respectively a first contact surface and a second contact surface.

[0010] Preferably, the first contact surface and the second contact surface are parallel to the axis of the tool.

[0011] Preferably, the first contact surface and the second contact surface form an angle with the axis of the tool.

[0012] Preferably, there is a gap at the joint between the first semicircular convex ring and the second semicircular convex ring, and the gap is 0.3±0.1 mm.

[0013] Preferably, the tool also includes a screw, the cutter head is axially provided with a through hole, the head of the cutter head is also provided with a countersunk hole, the countersunk hole is connected to the channel and is coaxially arranged, the butt end of the tool handle is axially provided with a screw hole, the screw includes a screw head and a rod, the rod includes a threaded portion, the rod passes through the through hole, the threaded portion of the rod is threadedly connected to the screw hole, a screw hole is provided on the end face of the screw head, the screw head is located in the countersunk hole, and the screw hole is used to be inserted and tightened by an external tool.

[0014] Preferably, the cutter head includes a cutter head body, the connecting end of the cutter head body is provided with a conical boss protruding along the axial direction, the first semicircular boss ring is located on the conical boss, the connecting end face of the tool handle is provided with a first boss protruding along the axial direction, the second semicircular boss ring is provided on the end face of the first boss, the tool also includes a ring, one end of the ring is sleeved on the first boss and welded to the first boss, and the other end of the ring is sleeved outside the conical boss.

[0015] Preferably, the center hole of the collar includes a tapered section and a cylindrical section, and the tapered section cooperates with the tapered boss for insertion of the tapered boss.

[0016] Preferably, after the screw locks the cutter head and the cutter handle, the end face of the collar that abuts the cutter head is pressed against the abutting end face of the cutter head body.

[0017] By means of the above technical solution, the beneficial effects of the present invention are as follows:

[0018] The utility model provides a simple quick-change tool. The tool head and tool handle only require a semicircular convex ring to be provided along the axial direction. The structure is relatively simple. The semicircular convex ring can be processed using common processing equipment. The tool head and tool handle butt joint end faces in the shape of a semicircular convex ring can be easily processed, reducing reliance on high-precision processing equipment and lowering processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a cutting tool of the present utility model.

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the tool of the present utility model.

[0021] Figure 3 It is a partial structural schematic diagram of the tool of the present utility model.

[0022] Figure 4 yes Figure 3 A partial enlarged view of part A.

[0023] Figure 5 It is a structural schematic diagram of the cutter head and the screw rod of the present utility model.

[0024] Figure 6 It is a structural schematic diagram of the cutter head of the present utility model.

[0025] Figure 7 It is a structural schematic diagram of the handle of the tool of the utility model.

[0026] Figure 8 It is a structural schematic diagram of the screw of the present utility model.

[0027] Figure 9 It is a schematic diagram of the cross-sectional structure of the cutter head of the present utility model.

[0028] Figure 10 It is a structural schematic diagram of the cross section of the tool of the present invention.

[0029] Figure 11 It is a partial structural schematic diagram of a tool according to another embodiment of the present utility model.

[0030] Figure 12 yes Figure 11 A partial enlarged view of part A.

[0031] Figure 13 It is a structural schematic diagram of a cutter head and a screw rod according to another embodiment of the present invention.

[0032] Figure 14 It is a structural schematic diagram of a knife handle according to another embodiment of the present utility model.

[0033] Among them: 1. Cutting head; 2. Cutting handle; 3. Ring; 4. Screw; 11. Cutting head body; 12. Conical boss; 13. First semicircular convex ring; 14. Gap; 15. Through hole; 16. Countersunk hole; 21. Screw hole; 22. First boss; 23. Second semicircular convex ring; 41. Threaded portion; 42. Rod portion; 43. Screw head; 44. Screw hole; 131. First contact surface; 231. Second contact surface. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] It should be noted that, in the description of this utility model, the terms "first," "second," etc., are used solely for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0036] like Figure 1-10 The figure shows a cutting tool according to the first embodiment of the present application. The present invention provides a cutting tool that is easy to process. The cutting tool comprises a handle 2 and a cutting head 1 mounted at the end of the handle 2. A first semicircular raised ring 13 is axially disposed on the mating end face of the cutter head 1, and a second semicircular raised ring 23 is axially disposed on the mating end face of the handle 2. The centers of the first and second semicircular raised rings 13 and 23 are located on the axis of the cutter. When the handle 2 and cutter head 1 are mated, the first and second semicircular raised rings 13 and 23 are joined to form a circular ring. The cutter head 1 and handle 2 only require the semicircular raised rings to be disposed axially, resulting in a relatively simple structure. The semicircular raised rings can be machined using common machining equipment, making it relatively easy to produce the mating end faces of the cutter head 1 and handle 2 in a semicircular ring shape, reducing reliance on high-precision machining equipment and lowering machining costs. The contact surfaces of the first and second semicircular raised rings 13 and 23 are respectively a first contact surface 131 and a second contact surface. The first contact surface 131 and the second contact surface 231 are straight surfaces, parallel to the axis of the tool. Since the contact surfaces are straight surfaces, the geometric shape of the semicircular convex ring has a high degree of symmetry and regularity, and its size and shape are easy to measure and control, making processing more convenient. Preferably, there is a gap 14 at the joint of the first semicircular convex ring 13 and the second semicircular convex ring 23, and the gap 14 is 0.3±0.1mm. This gap 14 allows a certain degree of position adjustment, making it easier to align the semicircular convex rings on the tool head 1 and the tool handle 2, thereby facilitating the assembly personnel to accurately splice them together, improving assembly efficiency and reducing assembly difficulty.

[0037] The tool also includes a screw 4, the cutter head 1 is axially provided with a through hole 15, the head of the cutter head 1 is also provided with a countersunk hole 16, the countersunk hole 16 is connected to the channel and is coaxially arranged, the butt end of the tool handle 2 is axially provided with a screw hole 21, the screw 4 includes a screw head 43 and a rod 42, the rod 42 includes a threaded portion 41, the rod 42 passes through the through hole 15, the threaded portion 41 of the rod 42 is threadedly connected to the screw hole 21, a screw hole 44 is provided on the end face of the screw head 43, the screw head 43 is located in the countersunk hole 16, and the screw hole 44 is used to be inserted and tightened by an external tool.

[0038] The cutter head 1 includes a cutter head 1 body, the connecting end of the cutter head 1 body is provided with a conical boss 12 protruding along the axial direction, the first semicircular convex ring 13 is located on the conical boss 12, the connecting end face of the shank 2 is provided with a first boss 22 protruding along the axial direction, the second semicircular convex ring 23 is provided on the end face of the first boss 22, the tool also includes a ring 3, one end of the ring 3 is sleeved on the first boss 22 and welded to the first boss 22, and the other end of the ring 3 is sleeved outside the conical boss 12.

[0039] The center hole of the collar 3 includes a tapered section and a cylindrical section. The tapered section cooperates with the tapered boss 12, allowing it to be inserted. When the screw 4 secures the cutter head 1 to the handle 2, the end face of the collar 3 that abuts the cutter head 1 abuts the end face of the cutter head 1 body. When the cutter head 1 and handle 2 are mated, the tapered boss 12 can be inserted into the tapered section of the collar 3, ensuring that the cutter head 1 and handle 2 remain coaxial during initial mating, improving assembly accuracy and efficiency.

[0040] like Figure 11-14 The figure shows a tool according to a second embodiment of the present application. The first contact surface 131 and the second contact surface are inclined surfaces, forming an angle with the axis of the tool. Compared to planar contact surfaces, inclined surfaces provide a larger actual contact area for the same axial length and radial dimensions. Furthermore, the inclined contact surfaces of the first and second semicircular raised rings 13, 23 can better mate with each other. When subjected to cutting forces, these forces are more evenly distributed across the contact surfaces, reducing stress concentration and improving the overall structural reliability of the tool.

[0041] The above-described embodiments are merely preferred embodiments for the purpose of fully illustrating the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are within the scope of protection of the present invention. The scope of protection of the present invention shall be subject to the claims.

Claims

1. A simple quick-change tool, characterized in that: The tool comprises a handle and a cutter head mounted on the end of the handle. The butt end face of the cutter head is provided with a first semicircular convex ring along the axial direction. The butt joint end face of the handle is provided with a second semicircular convex ring along the axial direction. The centers of the first semicircular convex ring and the second semicircular convex ring are located on the axis of the tool. When the tool handle and the tool head are connected, the first semicircular convex ring and the second semicircular convex ring are spliced ​​together to form a circular ring.

2. The tool according to claim 1, characterized in that The surfaces where the first semicircular convex ring and the second semicircular convex ring contact each other are respectively a first contact surface and a second contact surface.

3. The tool according to claim 2, characterized in that The first contact surface and the second contact surface are parallel to the axis of the tool.

4. The tool according to claim 2, characterized in that The first contact surface and the second contact surface form an angle with the axis of the tool.

5. The tool according to claim 2, characterized in that There is a gap at the joint of the first semicircular convex ring and the second semicircular convex ring, and the gap is 0.3±0.1 mm.

6. The cutting tool according to claim 1, wherein The tool further comprises a screw, the tool head is provided with a through hole along the axial direction, the head of the tool head is further provided with a countersunk hole, the countersunk hole is connected to the channel and is coaxially arranged, and the butt end of the tool handle is provided with a screw hole along the axial direction. The screw comprises a screw head and a rod, wherein the rod comprises a threaded portion. The rod passes through the through hole, and the threaded portion of the rod is threadedly connected to the screw hole. A screw hole is provided on the end surface of the screw head, the screw head is located in the countersunk hole, and the screw hole is used for being inserted and tightened by an external tool.

7. The tool according to claim 6, characterized in that The cutter head includes a cutter head body, the connecting end of the cutter head body is provided with a conical boss protruding in the axial direction, the first semicircular convex ring is located on the conical boss, the connecting end surface of the handle is provided with a first boss protruding in the axial direction, and the second semicircular convex ring is provided on the end surface of the first boss. The tool further comprises a collar, one end of which is sleeved on the first boss and fixedly welded to the first boss, and the other end of which is sleeved outside the conical boss.

8. The tool according to claim 7, characterized in that The center hole of the collar comprises a tapered section and a cylindrical section. The tapered section matches the tapered boss and is inserted into the tapered boss.

9. The tool according to claim 8, characterized in that When the screw locks the cutter head and the cutter handle, the end face of the collar that is butted against the cutter head is pressed against the butted end face of the cutter head body.

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