Cutting tool

Abstract

The utility model discloses a cutting tool which comprises a clamping tool handle and a tool body installed on the clamping tool handle, the tool body further comprises a square column body and a cutting edge arranged at the lower end of the square column body, a square installation hole is formed in the lower surface of the clamping tool handle, and containing grooves are formed in at least two inner walls of the square installation hole. A plurality of containing grooves are formed in the clamping knife handle, a pressing block is arranged in each containing groove, the surface of the side, opposite to the square column body, of each pressing block is in abutting contact with the end face of a first screw, the clamping knife handle is further provided with at least two second screws corresponding to the pressing blocks, a flange part is arranged at one end of each second screw, and an elastic piece is arranged between each flange part and the side surface of the clamping knife handle. According to the milling cutter, the machining yield and efficiency of the cutter are improved, meanwhile, the stress balance of the cutter can be guaranteed in the milling machining process, the bad conditions of white points, line marks, male and female faces and the like can be effectively avoided in the machining process, the surface yield of one-time machining is improved, and the cutter is convenient to replace.

Description

Technical Field

[0001] The utility model relates to a cutting tool and belongs to the technical field of milling processing. Background Art

[0002] CNC is the abbreviation of computer digital control, or CNC for short. It is the enabling technology and the most basic equipment for the development of emerging high-tech industries and cutting-edge industries. PCD tools are usually clamped on machine tools, and then milling is performed on the workpiece to be processed. The PCD tools used in the prior art usually use round-shank tools to facilitate the clamping of the tool handle by the CNC lathe, but it is difficult to calibrate the tool when grinding it, the tool processing yield and efficiency are low, and the tool is subjected to uneven force during milling, which can easily cause tool vibration due to tool shaking, resulting in white spots, line marks, and negative and positive surfaces during processing. Utility Model Content

[0003] The purpose of the utility model is to provide a cutting tool, which can improve the processing yield and efficiency of the tool itself, ensure the balance of the force on the tool during the milling process, and can also effectively avoid the formation of white spots, line marks, yin and yang surfaces and other undesirable conditions during the processing, thereby improving the surface yield of a single processing and facilitating the replacement of the tool.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a cutting tool, comprising: a clamping handle and a tool mounted on the clamping handle, the tool further comprising: a vertically extending square column and a blade arranged at the lower end of the square column, the lower surface of the clamping handle is provided with a square mounting hole, the upper part of the square column is embedded in the square mounting hole, at least two inner walls of the square mounting hole are provided with accommodating grooves, each of the accommodating grooves is provided with a pressing block, and the surface of each pressing block opposite to the side of the square column is in contact with the end of a horizontally arranged first screw The surfaces of the pressing block are pressed and contacted, so that the surface of the other side of the pressing block is pressed and contacted with the side surface of the square cylinder, each of the first screws correspondingly passes through a threaded through hole opened on the side surface of the clamping handle and is threadedly connected with the inner wall of the threaded through hole, and at least two second screws corresponding to the pressing block are provided, one end of each of the second screws extending horizontally passes through a through hole opened on the side surface of the clamping handle and is connected to the corresponding pressing block, and the other end of the second screw is provided with a flange portion radially outward, and an elastic member in an extruded state is provided between the flange portion and the side surface of the clamping handle.

[0005] The further improved scheme in the above technical scheme is as follows:

[0006] 1. In the above solution, accommodating grooves are provided on two opposite inner walls of the square mounting hole.

[0007] 2. In the above solution, the elastic member is a butterfly spring mounted on the outside of the second screw.

[0008] 3. In the above solution, the second screw is embedded in the pressing block and connected to the pressing block through threads.

[0009] 4. In the above solution, each of the pressing blocks is in pressing contact with the end faces of one end of two first screws spaced apart in the vertical direction.

[0010] 5. In the above solution, the second screw is arranged between two first screws that are spaced apart in the vertical direction.

[0011] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0012] The utility model cutting tool, the tool further comprises: a vertically extending square column and a blade arranged at the lower end of the square column, the lower surface of the clamping handle is provided with a square mounting hole, the upper part of the square column is embedded in the square mounting hole, at least two inner walls of the square mounting hole are provided with accommodating grooves, each of the accommodating grooves is provided with a pressing block, the surface of each of the pressing blocks opposite to the side of the square column is pressed and contacted with the end face of a horizontally arranged first screw, so that the surface of the other side of the pressing block is pressed and contacted with the side surface of the square column, each of the first screws correspondingly passes through a threaded through hole opened on the side surface of the clamping handle and is threadedly connected to the inner wall of the threaded through hole, and at least two second screws corresponding to the pressing block are also provided, one end of each of the second screws extending horizontally passes through the opening A through hole is arranged on the side surface of the clamping tool handle and is connected to the corresponding pressure block. The other end of the second screw is provided with a flange portion extending radially outward. An elastic member in an extruded state is arranged between the flange portion and the side surface of the clamping tool handle. While improving the processing yield and efficiency of the tool itself, the tool can be stably clamped on the surface and the force balance of the tool can be ensured during the milling process of the blade on the workpiece. The local clamping gap caused by the thrust attenuation of the first screw during long-term use can be compensated through adaptive adjustment, and the square column of the tool and each pressure block are always kept in parallel fit without gaps, thereby effectively avoiding the formation of white spots, line marks, yin and yang surfaces and other defects on the processing surface due to the vibration of the tool during the processing, thereby improving the surface yield of one-time processing and facilitating the replacement of the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Attached Figure 1 It is a schematic diagram of the structure of the cutting tool of the utility model;

[0014] Attached Figure 2 For attachment Figure 1 Schematic diagram of the cross section along AA;

[0015] Attached Figure 3 For the utility model Figure 2 The enlarged schematic diagram of point B in the middle;

[0016] Attached Figure 4 It is a schematic structural diagram of the clamping handle of the cutting tool of the utility model;

[0017] Attached Figure 5 It is a structural sectional view of the clamping handle of the cutting tool of the utility model.

[0018] In the above figures: 1. Clamping handle; 2. Cutting tool; 3. Elastic member; 4. Square cylinder; 5. Blade; 6. Square mounting hole; 7. Receiving groove; 8. Press block; 91. First screw; 92. Threaded through hole; 10. Second screw; 11. Through hole; 12. Flange. DETAILED DESCRIPTION

[0019] The present invention can be further understood through the specific embodiments given below, but they are not intended to limit the present invention.

[0020] Embodiment 1: A cutting tool, comprising: a clamping handle 1 and a tool 2 mounted on the clamping handle 1, the tool 2 further comprising: a vertically extending square column 4 and a blade 5 arranged at the lower end of the square column 4, the lower surface of the clamping handle 1 is provided with a square mounting hole 6, the upper part of the square column 4 is embedded in the square mounting hole 6, at least two inner walls of the square mounting hole 6 are provided with a receiving groove 7, each of the receiving grooves 7 is provided with a pressing block 8, the surface of each pressing block 8 opposite to the side of the square column 4 is pressed against the end face of a horizontally arranged first screw 91, so that the pressing block 8, the surface on the other side is pressed and contacted with the side surface of the square cylinder 4, each of the first screws 91 passes through the threaded through hole 92 opened on the side surface of the clamping handle 1 and is threadedly connected with the inner wall of the threaded through hole 92, and at least two second screws 10 corresponding to the pressure block 8 are provided, and one end of each of the second screws 10 extending horizontally passes through the through hole 11 opened on the side surface of the clamping handle 1 and is connected to the corresponding pressure block 8, and the other end of the second screw 10 has a flange portion 12 radially outward, and an elastic member 3 in an extruded state is provided between the flange portion 12 and the side surface of the clamping handle 1.

[0021] Accommodating grooves 7 are formed on two opposite inner walls of the square mounting hole 6 .

[0022] The elastic member 3 is a butterfly spring sleeved on the outside of the second screw 10 .

[0023] The second screw 10 is embedded in the pressing block 8 and connected to the pressing block 8 via threads.

[0024] Each of the pressing blocks 8 is in pressing contact with the end surfaces of one end of two first screws 91 spaced apart in the vertical direction.

[0025] The second screw 10 is disposed between two first screws 91 that are spaced apart in the vertical direction.

[0026] Embodiment 2: A cutting tool, comprising: a clamping handle 1 and a tool 2 mounted on the clamping handle 1, the tool 2 further comprising: a vertically extending square column 4 and a blade 5 arranged at the lower end of the square column 4, the lower surface of the clamping handle 1 is provided with a square mounting hole 6, the upper part of the square column 4 is embedded in the square mounting hole 6, at least two inner walls of the square mounting hole 6 are provided with accommodating grooves 7, each of the accommodating grooves 7 is provided with a pressing block 8, and the surface of each pressing block 8 opposite to the side of the square column 4 is pressed against the end face of a horizontally arranged first screw 91, so that the pressing block 8, the surface on the other side is pressed and contacted with the side surface of the square cylinder 4, each of the first screws 91 passes through the threaded through hole 92 opened on the side surface of the clamping handle 1 and is threadedly connected with the inner wall of the threaded through hole 92, and at least two second screws 10 corresponding to the pressure block 8 are provided, and one end of each of the second screws 10 extending horizontally passes through the through hole 11 opened on the side surface of the clamping handle 1 and is connected to the corresponding pressure block 8, and the other end of the second screw 10 has a flange portion 12 radially outward, and an elastic member 3 in an extruded state is provided between the flange portion 12 and the side surface of the clamping handle 1.

[0027] Accommodating grooves 7 are formed on two opposite inner walls of the square mounting hole 6 .

[0028] The elastic member 3 is a butterfly spring sleeved on the outside of the second screw 10 .

[0029] Each of the pressing blocks 8 is in pressing contact with the end surfaces of one end of two first screws 91 spaced apart in the vertical direction.

[0030] The pressing block 8 is a vertically extending strip-shaped pressing block.

[0031] The threaded through hole 92 and the through hole 11 extending in the horizontal direction are both communicated with the accommodating groove 7 .

[0032] The cutting edge 5 is a PCD cutting edge.

[0033] When installing or replacing a tool, first loosen the first screw to form a gap between its end face and the pressing block, so that no tight pressure is applied to the pressing block, thereby reducing the pressure applied by the pressing block on the square cylinder of the tool, making it easier to remove the old tool and install a new one. During this process, each pressing block will not be displaced or deflected under the action of the second bolt and the butterfly spring, so as to facilitate the subsequent clamping of the newly installed tool.

[0034] After the new tool is inserted into the square mounting hole, the first screw is tightened, and the tool is stably clamped on the surface through multiple pressure blocks to ensure the balance of force on the tool. The local clamping gap caused by the thrust attenuation of the first screw during long-term use can also be compensated through adaptive adjustment, and the square column of the tool and each pressure block are always kept in parallel fit without gaps, thereby effectively avoiding the formation of white spots, line marks, yin-yang surfaces and other defects on the processing surface due to tool shaking during processing, thereby improving the surface yield of one-time processing and facilitating the replacement of the tool.

[0035] This project is an electronic product appearance part. Since the product surface is not allowed to have knife marks and other defects, the best choice is planing technology.

[0036] As the project also requires subsequent CNC machining of the shape, round-shank tools are used to facilitate CNC clamping of the tool holder. However, tool manufacturers have difficulty in making corrections when grinding PCD tools, and the tool yield is always unsatisfactory. Production has been temporarily suspended several times due to the low tool yield. Against this background, a special square-shank PCD planer and matching tool holder were developed.

[0037] When the above-mentioned cutting tool is used, while improving the processing yield and efficiency of the tool itself, the tool can be stably clamped on the surface and the force balance of the tool can be ensured during the milling process of the workpiece by the blade. The local clamping gap caused by the thrust attenuation of the first screw during long-term use can be compensated through adaptive adjustment, and the square column of the tool and each pressure block can always be kept in parallel fit without gaps, thereby effectively avoiding the formation of white spots, line marks, yin-yang surfaces and other defects on the processing surface due to tool shaking and vibration during processing, thereby improving the surface yield of one-time processing and facilitating the replacement of the tool.

[0038] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A cutting tool comprising: A clamping handle (1) and a tool (2) mounted on the clamping handle (1), characterized in that the tool (2) further comprises: a vertically extending square column (4) and a blade (5) arranged at the lower end of the square column (4); a square mounting hole (6) is provided on the lower surface of the clamping handle (1); the upper part of the square column (4) is embedded in the square mounting hole (6); at least two inner walls of the square mounting hole (6) are provided with accommodating grooves (7); each of the accommodating grooves (7) is provided with a pressing block (8); the surface of each pressing block (8) opposite to the side of the square column (4) is pressed against the end face of a horizontally arranged first screw (91), so that the pressing block (8) is pressed against the end face of the first screw (91) arranged horizontally. The surface of one side is in pressure contact with the side surface of the square column (4), each of the first screws (91) correspondingly passes through a threaded through hole (92) opened on the side surface of the clamping handle (1) and is threadedly connected to the inner wall of the threaded through hole (92), and at least two second screws (10) corresponding to the pressure block (8) are also provided, one end of each of the second screws (10) extending horizontally passes through a through hole (11) opened on the side surface of the clamping handle (1) and is connected to the corresponding pressure block (8), and the other end of the second screw (10) has a flange portion (12) extending radially outward, and an elastic member (3) in a squeezed state is provided between the flange portion (12) and the side surface of the clamping handle (1).

2. The cutting tool according to claim 1, characterized in that: Accommodation grooves (7) are provided on two opposite inner walls of the square mounting hole (6).

3. The cutting tool according to claim 1, characterized in that: The elastic member (3) is a butterfly spring sleeved on the outside of the second screw (10).

4. The cutting tool according to claim 1, characterized in that: The second screw (10) is embedded in the pressing block (8) and connected to the pressing block (8) via a thread.

5. The cutting tool according to claim 1, characterized in that: Each of the pressing blocks (8) is in pressing contact with the end surfaces of one end of two first screws (91) spaced apart in the vertical direction.

6. The cutting tool according to claim 5, characterized in that: The second screw (10) is arranged between two first screws (91) that are spaced apart in the vertical direction.

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