Cutting tool

Abstract

The utility model relates to the technical field of cutters, in particular to a cutting tool. According to the utility model, through the rotation of the supporting piece in the locking assembly, the upper pressing part and the lower support are separated, so that the blade groove is expanded, the blade can be inserted into the blade groove, then the supporting piece is rotated, the upper pressing part and the lower support are retracted, and the blade groove is tightened, so that the blade is clamped by the blade groove; according to the utility model, the supporting piece is of a rotary body structure, the manufacturing cost is low, the service life is long, and the problem of high requirement on the height manufacturing precision between the blade and the cutter body is solved as the blade is clamped by operating the supporting piece, so that the lower manufacturing cost of the cutter is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of tool tools, in particular to a cutting tool. Background Art

[0002] There are many cutting tools in the field of groove processing tools used in existing grooving, cutting and grooving. The blade of the cutting tool is clamped in the blade groove of the head of the tool body. The blade groove has an upper jaw and a lower jaw. The middle parts of the clamping surfaces of the upper jaw and the lower jaw are convex outward or concave inward, and the upper end face and the lower end face of the blade have corresponding concave or convex. Therefore, through the cooperation of the above-mentioned protrusions and concave, and through external locking force or self-clamping, the blade is not easy to deviate during cutting operation and is firmly fixed in the clamping of the upper jaw and the lower jaw.

[0003] At present, due to the self-clamping design of the tool rod, the blade receiving port of the blade groove between the upper jaw and the lower jaw of the tool rod is smaller than the height of the blade, so that the blade cannot be clamped normally. In addition, there are manufacturing errors of the blade and the tool rod. In addition, when the blade is clamped, the upper and lower jaws and the blade may undergo micro-deformation, resulting in a gap between the blade and the upper and lower jaws, making it impossible for the blade to be clamped stably, and then vibration, jitter and other adverse phenomena occur during cutting, affecting the processing accuracy. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings, the purpose of the utility model is to provide a cutting tool, by rotating the support member in the locking assembly, the upper clamping part and the lower support are separated further, thereby enlarging the blade slot so that the blade can be inserted into the blade slot, and then rotating the support member to retract the upper clamping part and the lower support, tighten the blade slot, and thus the blade slot clamps the blade.

[0005] The technical solution of the utility model to solve the technical problem is:

[0006] A cutting tool comprises a tool body and a blade, wherein the tool body comprises a tool rod and a clamping head, the clamping head is provided with a blade slot and a clamping mechanism for clamping the blade, the clamping mechanism comprises an upper jaw and a lower jaw respectively located at the upper and lower sides of the blade slot, wherein the clamping mechanism also comprises an upper clamping portion, a lower support portion and a locking assembly, the upper jaw is connected to the upper clamping portion, the lower jaw is connected to the lower support portion, the locking assembly comprises a support member, the support member is connected to the upper clamping portion or the lower support portion, and the blade slot can be expanded or tightened by rotating the pull section of the support member so that the support member rotates.

[0007] As an improvement of the present invention, the locking assembly further comprises a locking screw, and the locking screw is connected to the upper pressing portion and the lower supporting portion.

[0008] As a further improvement of the present invention, the clamping surface of the upper jaw is concave inward, the clamping surface of the lower jaw is convex outward, the upper end surface of the blade is convex outward, the lower end of the blade is concave inward, the upper end surface of the blade is clamped in the clamping surface of the upper jaw, and the clamping surface of the lower jaw is clamped in the lower end surface of the blade.

[0009] As a further improvement of the utility model, the support member includes a pull segment, a threaded segment and a spherical segment which are connected in sequence.

[0010] As a further improvement of the present invention, when the support member is connected to the upper pressing portion, the spherical section of the support member presses against the lower supporting portion.

[0011] As a further improvement of the present invention, when the support member is connected to the lower support portion, the spherical section of the support member presses against the upper pressing portion.

[0012] As a further improvement of the utility model, the upper end surface of the pull section is provided with a hexagonal hole.

[0013] As a further improvement of the present invention, the length of the threaded segment is greater than the length of the spherical segment.

[0014] As a further improvement of the utility model, the upper end surface of the locking screw is provided with a hexagonal hole.

[0015] In the utility model, the upper clamping part and the lower support are separated further by rotating the support member in the locking assembly, thereby expanding the blade slot so that the blade can be inserted into the blade slot, and then the support member is rotated to retract the upper clamping part and the lower support, tighten the blade slot, and thus the blade slot clamps the blade; in the utility model, the support member is a rotating body structure with low manufacturing cost and long service life, and because the blade is clamped by operating the support member, the problem of high manufacturing precision requirements between the blade and the tool body is solved, thereby achieving lower manufacturing cost of the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] For ease of explanation, the present invention is described in detail with reference to the following preferred embodiments and accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of the utility model when the blade is not clamped;

[0018] Figure 2 This is a schematic diagram of the structure of the blade when it is clamped in the utility model;

[0019] Figure 3 It is a structural schematic diagram of the support member in the utility model;

[0020] Figure 4This is a schematic diagram of the structure of the utility model when the support member is screwed downward;

[0021] Figure 5 for Figure 4 A magnified view of middle;

[0022] Figure 6 This is a schematic diagram of the structure of the support member of the utility model when it is screwed upward;

[0023] Figure 7 for Figure 6 Enlarged view of middle B;

[0024] Figure markings: 1-blade body, 2-blade, 11-blade rod, 12-clamping head, 13-blade slot, 14-clamping mechanism, 141-upper jaw, 142-lower jaw, 143-upper clamping part, 144-lower supporting part, 145-locking assembly, 3-support member, 31-pushing section, 32-threaded section, 33-spherical section, 4-locking screw. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] like Figures 1 to 7 As shown, a cutting tool of the utility model comprises a tool body 1 and a blade 2 . The tool body 1 comprises a tool rod 11 and a clamping head 12 . The clamping head 12 is provided with a blade groove 13 for clamping the blade 2 and a clamping mechanism 14 .

[0027] In the utility model, the clamping mechanism 14 includes an upper jaw 141 and a lower jaw 142 respectively located on the upper and lower sides of the blade slot 13, an upper clamping portion 143, a lower support portion 144 and a locking assembly 145. The upper jaw 141 is connected to the upper clamping portion 143, and the lower jaw 142 is connected to the lower support portion 144. The locking assembly 145 includes a support member 3 and a locking screw 4. The support member 3 includes a pull section 31, a threaded section 32 and a spherical section 33 connected in sequence. The support member 3 is connected to the upper clamping portion 143 or the lower support portion 144. By rotating the pull section 31 of the support member 3 to rotate the support member 3, the blade slot 13 can be expanded or tightened; the locking screw 4 is connected to the upper clamping portion 143 and the lower support portion 144.

[0028] In the utility model, by rotating the support member 3 in the locking assembly 145, the upper clamping portion 143 and the lower support 144 are separated further apart, thereby expanding the blade slot 13 so that the blade 2 can be inserted into the blade slot 13, and then the support member 3 is rotated to retract the upper clamping portion 143 and the lower support 144, tightening the blade slot 13, so that the blade slot 13 clamps the blade 2.

[0029] In the utility model, the clamping surface of the upper jaw 141 is convex outward, the clamping surface of the lower jaw 142 is convex outward, the upper end surface of the blade 2 is concave inward, the lower end of the blade 2 is concave inward, the upper end surface of the blade 2 is clamped in the clamping surface of the upper jaw 141, and the clamping surface of the lower jaw 142 is clamped in the lower end surface of the blade 2.

[0030] In the present invention, the upper end surface of the pull section 31 of the support member 3 is provided with a hexagonal hole to facilitate the rotation of the support member 3 .

[0031] In the present invention, the length of the threaded section 32 of the support member 3 is greater than the length of the spherical section 33 thereof.

[0032] In the utility model, the upper end surface of the locking screw 4 is provided with a hexagonal hole to facilitate locking.

[0033] In the present invention, when the support member 3 is connected to the upper clamping portion 143, the spherical section 33 of the support member 3 is pressed against the lower support portion 144; specifically, when the support member 3 is located at the upper clamping portion 143, the clamping head 12 is in a state where the blade 2 is not clamped, because the height of the blade receiving opening of the blade groove 13 in a natural state is less than the height of the blade 2, the blade 2 cannot be directly inserted into the blade receiving opening; when the clamping head 12 is in a state where the blade 2 is clamped, a wrench is used to rotate the support member 3 through the thread on the support member 3, forcing it to move downward, so that the support member 3 pushes the upper clamping portion 143 and the upper jaw 141 upward, forcing the blade receiving opening to increase to a size where the blade 2 can be inserted. Insert it, and at this time directly insert the blade 2 into the blade receiving port; when the clamping head 12 is in the state of clamping the blade 2, use a wrench to rotate the support 3 in the opposite direction and unscrew it through the thread on the support 3, forcing it to move upward. Since the upper clamping part 143 of the tool head loses the upward force of the support 3 on it, under the action of the elastic deformation of the blade 2, the front end points of the upper clamping part 143 and the upper jaw 142 move downward and contact the blade 2. Since the height of the blade groove 13 is less than the height of the blade 2 in the free state, the upper clamping part 143 uses its elastic self-locking ability to stably clamp the blade 2, and then the locking screw 4 is screwed downward to lock it, thereby strengthening the clamping force on the blade 2.

[0034] When the support member 3 is connected to the lower support portion 144, the spherical section 33 of the support member 3 presses against the upper clamping portion 143. Specifically, when the support member 3 is located at the lower support portion 144, the clamping head 12 is in a state where the blade 2 is not clamped. Since the blade receiving opening of the blade groove 13 is naturally smaller than the height of the blade 2, the blade 2 cannot be directly inserted into the blade receiving opening. When the clamping head 12 is in a state where the blade 2 is clamped, a wrench is used to rotate the support member 3 through the thread on the support member 3, forcing it to move upward, so that the support member 3 pushes the upper clamping portion 143 and the upper jaw 141 upward, forcing the blade 2 receiving opening to increase to a size that allows the blade 2 to be inserted. At this time, the blade 2 is directly inserted into the blade receiving port; when the clamping head 12 is in the state of clamping the blade 2, a wrench is used to rotate the support member 3 in the opposite direction and unscrew it through the thread on the support member 3, forcing it to move downward. Since the upper clamping portion 143 loses the upward force of the support member 3 on it, under the action of the elastic deformation of the knife body, the upper clamping portion 143 and the front end point of the upper jaw 141 move downward and contact the blade 2. Since the height of the blade groove 13 is less than the height of the blade 2 in the free state, the upper clamping portion 143 uses its elastic self-locking ability to stably clamp the blade 2, and then the locking screw 4 is screwed downward to lock it, thereby strengthening the clamping force on the blade 2.

[0035] The utility model is an elastic self-clamping tool, whose main body is not in the shape of a thin sheet, the tool rod has strong rigidity, and the auxiliary clamping mechanism 14 is not a deformation hole, so there is no problem of clamping being affected by wear of the deformation hole. The clamping mechanism 14 has a simple structure, especially the support member 3 is a rotating body structure, the manufacturing cost is low, and the service life is long. Moreover, since the blade 2 is clamped by operating the support member 3, the problem of high manufacturing precision requirement between the blade 2 and the tool body 1 is solved, and a lower manufacturing cost of the tool is achieved.

[0036] In the utility model, a more stable and stronger clamping force effect is achieved through a self-locking and screw-locking clamping method.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cutting tool, comprising a tool body and a blade, wherein the tool body comprises a tool rod and a clamping head, wherein the clamping head is provided with a blade slot and a clamping mechanism for clamping the blade, wherein the clamping mechanism comprises an upper jaw and a lower jaw respectively located at the upper and lower sides of the blade slot, wherein: The clamping mechanism also includes an upper clamping part, a lower support part and a locking assembly, the upper jaw is connected to the upper clamping part, the lower jaw is connected to the lower support part, and the locking assembly includes a support member, which is connected to the upper clamping part or the lower support part. The blade slot can be expanded or tightened by rotating the pulling section of the support member so that the support member is rotated.

2. A cutting tool according to claim 1, characterized in that: The locking assembly also includes a locking screw connected to the upper pressing portion and the lower supporting portion.

3. A cutting tool according to claim 1 or 2, characterized in that: The clamping surface of the upper jaw is convex outward, the clamping surface of the lower jaw is convex outward, the upper end surface of the blade is concave inward, the lower end of the blade is concave inward, the upper end surface of the blade is clamped in the clamping surface of the upper jaw, and the clamping surface of the lower jaw is clamped in the lower end surface of the blade.

4. A cutting tool according to claim 1, characterized in that: The support member comprises a pull segment, a threaded segment and a spherical segment which are connected in sequence.

5. A cutting tool according to claim 4, characterized in that: When the support member is connected to the upper pressing portion, the spherical section of the support member presses against the lower support portion.

6. A cutting tool according to claim 4, characterized in that: When the support member is connected to the lower support portion, the spherical section of the support member presses against the upper pressing portion.

7. A cutting tool according to claim 4, characterized in that: The upper end surface of the pull section is provided with a hexagonal hole.

8. A cutting tool according to claim 4, characterized in that: The length of the threaded segment is greater than the length of the spherical segment.

9. A cutting tool according to claim 2, characterized in that: The upper end surface of the locking screw is provided with a hexagonal hole.

Images