Cutting tool and clamping device thereof

Abstract

The utility model provides a cutting tool and a clamping device thereof. The clamping device comprises a clamping handle. A fastener; the tool bit part is arranged at one end of the clamping handle and comprises an upper clamping jaw, a lower clamping jaw, a deformation groove, a deformation hole and a fastening hole; the upper clamping palate and the lower clamping palate are oppositely arranged at the front end at an interval of the deformation groove and are connected at the rear end, and the deformation hole is formed in the joint of the upper clamping palate and the lower clamping palate and is communicated with the deformation groove; wherein the upper clamping palate is provided with a first narrow part and a first protruding part protruding relative to the side face of the first narrow part, the lower clamping palate is provided with a second narrow part and a second protruding part protruding relative to the side face of the second narrow part, and the first protruding part and the second protruding part are clamped and limited to form a blade seat; the fastening hole penetrates through the first narrow portion from top to bottom and extends to the upper portion of the second narrow portion through the deformation groove, and the fastener is arranged in the fastening hole to connect and press the upper clamping palate and the lower clamping palate. According to the cutting tool and the clamping device thereof, cutting is more stable.

Description

Technical Field

[0001] The present invention relates to a cutting insert, and in particular to a cutting tool. Background Art

[0002] During the turning process, when faced with a groove with an interfering part, the control of the blade length becomes particularly critical due to the need for overhanging operation, large cutting depth and limited working space. The blade length should be shortened as much as possible to ensure the cutting depth while maintaining cutting stability. However, the traditional clamping method often extends the deformation groove of the cutter head to the tool bar clamping part, and uses the lever effect formed by the deformation groove and the fastening screw to fix the cutting blade. Although this method can achieve the fixation of the blade, it often leads to a reduction in the length of the tool bar clamping handle, which in turn causes the vibration of the cutting tool to increase during processing, which not only affects the processing quality, but also shortens the service life of the tool. Summary of the invention

[0003] Based on this, the utility model aims to overcome the defects of the prior art and provide a cutting tool and a clamping device thereof that make cutting more stable.

[0004] The present application provides a clamping device for a cutting tool, comprising:

[0005] Clamping handle;

[0006] fastener;

[0007] The cutter head portion provided at one end of the clamping handle comprises an upper clamping jaw, a lower clamping jaw, a deformation groove, a deformation hole and a fastening hole; the upper clamping jaw and the lower clamping jaw are arranged opposite to each other at the front end with the deformation groove in between, and are connected at the rear end; the deformation hole is provided at the connection between the upper clamping jaw and the lower clamping jaw and is connected to the deformation groove;

[0008] Among them, the upper clamping palate has a first narrow portion and a first protrusion protruding from the side of the first narrow portion, the lower clamping palate has a second narrow portion and a second protrusion protruding from the side of the second narrow portion, and the first protrusion and the second protrusion are clamped to form a blade seat; the fastening hole passes through the first narrow portion from top to bottom and extends to the upper part of the second narrow portion through the deformation groove, and the fastener is placed in the fastening hole to connect and press the upper clamping palate and the lower clamping palate.

[0009] Specifically, the distance between the fastening hole and the blade seat is smaller than the distance between the fastening hole and the deformation hole.

[0010] Furthermore, the side surface of the second narrow portion on the same side as the blade seat is a first concave arc-shaped side surface, and a first air avoidance area is formed in front of the first arc-shaped side surface.

[0011] Furthermore, the side surface of the second narrow portion on the side opposite to the blade seat is a second concave arc-shaped side surface, and a second air avoidance area is formed in front of the second arc-shaped side surface.

[0012] Specifically, the lower end surface of the first protrusion and the upper end surface of the second protrusion respectively form two opposite upper clamping surfaces and a lower clamping surface of the blade seat.

[0013] Specifically, the middle parts of the upper clamping surface of the knife holder and the lower clamping surface of the knife holder are respectively raised.

[0014] Furthermore, a cooling structure is also included, and the cooling structure includes:

[0015] A main channel is provided in the clamping handle, is in fluid communication with the first water channel and the second water channel, and is in fluid communication with a cooling water interface provided on the clamping handle;

[0016] The first water channel is disposed in the upper clamping jaw and is in fluid communication with a first water outlet disposed on the first protrusion;

[0017] The second water channel is arranged in the lower clamping jaw and is in fluid communication with a second water outlet arranged on the second protrusion.

[0018] Specifically, the fastening hole forms a blind hole at an upper portion of the second narrow portion.

[0019] Furthermore, the second water channel maintains a certain distance from the blind hole.

[0020] A cutting tool is also provided, comprising a cutting blade and the clamping device described in any one of the above technical solutions, wherein the cutting blade is accommodated and clamped in the blade seat.

[0021] The advantages of the present application over the prior art are that an embodiment of the present application provides a clamping device for a cutting tool, the size of the cutting head of which is relatively reduced. When the clamping handle has a conventional size, the size of the clamping handle can be increased, thereby providing more stable support and fixation for the cutting blade and effectively reducing cutting vibration during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a three-dimensional structural schematic diagram of a cutting tool of the present application;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of a cutting tool of the present application from another angle;

[0024] Figure 3 A schematic exploded isometric elevation view of a cutting tool for the present application;

[0025] Figure 4 for Figure 3 Cross-sectional view of PP;

[0026] Among them: 1. clamping device; 2. cutting blade; 3. fastener; 11. clamping handle; 12. cutter head; 101. upper clamping jaw; 102. lower clamping jaw; 103. blade seat; 104. first protrusion; 105. second protrusion; 107. deformation groove; 108. deformation hole; 109. fastening hole; 110. cooling water interface; 111. first water channel; 112. second water channel; 113. first water outlet; 114. second water outlet; 115. third water channel; 116. main channel; 117. first narrow part; 118. second narrow part; 121. first arc-shaped side; 122. second arc-shaped side; 123. first air avoidance area; 124. second air avoidance area; 201. upper blade clamping surface; 202. lower blade clamping surface. DETAILED DESCRIPTION

[0027] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0028] See also Figure 1-4 In the first embodiment of the present application, a clamping device 1 for a cutting tool comprises: a clamping handle 11, a tool head 12 arranged at one end of the clamping handle 11, and a fastener 3.

[0029] The cutter head 12 includes an upper clamping jaw 101, a lower clamping jaw 102, a deformation groove 107, a deformation hole 108 and a fastening hole 109. The upper clamping jaw 101 and the lower clamping jaw 102 are arranged at intervals at the front end and connected at the rear end. The deformation groove 107 is arranged between the upper clamping jaw 101 and the lower clamping jaw 102, and is defined by the upper clamping jaw 101 and the lower clamping jaw 102. The deformation hole 108 is arranged at the connection between the upper clamping jaw 101 and the lower clamping jaw 102, and is connected to the deformation groove 107.

[0030] In the present application, the end of the cutter head 12 away from the clamping handle 11 is regarded as the front, and the end of the clamping handle 11 away from the cutter head 12 is regarded as the rear.

[0031] The upper clamping jaw 101 includes a first wide portion, a first narrow portion 117 and a first protruding portion 104 in sequence from the rear end to the front end. The first protruding portion 104 protrudes outward relative to the side of the first narrow portion 117 .

[0032] The lower clamping jaw 102 includes a second wide portion, a second narrow portion 118 and a second protruding portion 105 in sequence from the rear end to the front end. The second protruding portion 105 protrudes outward relative to the side of the second narrow portion 118.

[0033] In the present application, the side surface of the first narrow portion 117 is the side surface relative to the upper and lower end surfaces and the front end surface of the first narrow portion 117 , and the side surface of the second narrow portion 118 is the same.

[0034] The fastening hole 109 penetrates the first narrow portion 117 from top to bottom, and extends to the upper portion of the second narrow portion 118 through the deformation groove 107 .

[0035] The fastener 3 is placed in the fastening hole 109 to connect and compress the upper clamping jaw 101 and the lower clamping jaw 102, that is, to compress the distance between the upper clamping jaw 101 and the lower clamping jaw 102 to provide a part of the clamping force for clamping the cutting insert 2.

[0036] A blade seat 103 for receiving the blade 2 is defined between the first protrusion 104 and the second protrusion 105 .

[0037] Since the fastening holes of the present application are arranged in the narrow part, while the fastening holes of the prior art are arranged in the wide part, the present embodiment can make the size of the cutter head 12 smaller than that of the prior art, so that the size of the clamping handle 11 can be increased, and a better lever effect can be formed, achieving elastic deformation rather than plastic deformation, thereby achieving the effect of reducing cutting vibration.

[0038] Optionally, the fastener 3 is a fastening screw, and the fastening hole 109 is a threaded hole.

[0039] Optionally, the upper clamping jaw 101 and the lower clamping jaw 102 are connected at the rear ends of the first wide portion and the second wide portion, and the deformation hole 108 is arranged between the first wide portion and the second wide portion.

[0040] Based on the second embodiment of any embodiment of the present application, a cutting tool clamping device 1

[0041] Optionally, the side surface of the second narrow portion 118 on the same side as the blade seat 103 is a concave first arc-shaped side surface 121 , and a first air-avoiding area 123 is formed in front of the first arc-shaped side surface 121 .

[0042] Optionally, the side surface of the second narrow portion 118 on the side opposite to the blade seat 103 is a concave second arc-shaped side surface 122 , and a second air avoidance area 124 is formed in front of the second arc-shaped side surface 122 .

[0043] A first clearance area 123 and a second clearance area 124 are formed on the side surfaces of the first narrow portion 117 and the second narrow portion 118 , so as to reduce the size of the tool head 12 and avoid interference between the tool and the workpiece during machining.

[0044] Optionally, the side surface of the first narrow portion 117 on the same side as the blade seat 103 is a concave third arc-shaped side surface (not shown in the figure), and a third air avoidance area (not shown in the figure) is formed in front of the third arc-shaped side surface.

[0045] Optionally, the side surface of the first narrow portion 117 on the side opposite to the blade seat 103 is a concave fourth arc-shaped side surface (not shown in the figure), and a fourth air avoidance area (not shown in the figure) is formed in front of the second arc-shaped side surface.

[0046] Optionally, in Figure 3 In the cross section shown, the distance between the fastening hole 109 and the blade seat 103 is smaller than the distance between the fastening hole 109 and the deformation hole 108 .

[0047] Optionally, the lower end surface of the first protrusion 104 and the upper end surface of the second protrusion 105 respectively form two opposite upper and lower clamping surfaces 106 and 107 of the blade seat 103 (not shown in the figure). Specifically, the middle parts of the upper and lower clamping surfaces 106 and 107 are respectively raised.

[0048] Based on the third embodiment of any embodiment of the present application, a cutting tool clamping device 1

[0049] Optionally, a cooling structure is further included, including a main channel 116, a first water channel 111 and a second water channel 112;

[0050] The main channel 116 is disposed in the clamping handle 11 , and is in fluid communication with the first water channel 111 and the second water channel 112 , and is in fluid communication with the cooling water interface 110 disposed on the clamping handle 11 ;

[0051] The first water channel 111 is disposed in the upper clamping jaw 101 and is in fluid communication with the first water outlet 113 disposed on the first protrusion 104;

[0052] The second water channel 112 is disposed in the lower clamping jaw 102 and is in fluid communication with a second water outlet 114 disposed on the second protrusion 105 .

[0053] Optionally, the fastening hole 109 forms a blind hole at the upper portion of the second narrow portion 118. Specifically, the second water channel 112 maintains a certain distance from the blind hole.

[0054] A cooling water passage is formed inside the clamping handle 11 and the cutter head 12, so as to cool and lubricate the cutting blade 2, reduce the cutting resistance of the tool, and extend the service life of the tool.

[0055] Optionally, the cooling structure further includes a third waterway 115 disposed in the cutter head portion 12 , and the third waterway 115 is fluidically connected to the main channel 116 , the first waterway 111 , and the second waterway 112 .

[0056] Example 4, please refer to Figure 1-4 A cutting tool comprises a cutting blade 2 and the clamping device 1 described in embodiments 1 to 3, wherein the cutting blade 2 is accommodated and clamped in a blade seat 103.

[0057] Optionally, the cutting blade 2 is configured as a single-head cutting edge, and the cutting blade 2 has an upper blade clamping surface 201 and a lower blade clamping surface 202, the upper blade clamping surface 201 of the cutting blade 2 contacts the upper clamping surface 106 of the tool holder, and the lower blade clamping surface 202 of the cutting blade 2 contacts the lower clamping surface of the tool holder.

[0058] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A cutting tool clamping device, characterized in that: include: Clamping handle; fastener; The cutter head portion provided at one end of the clamping handle comprises an upper clamping jaw, a lower clamping jaw, a deformation groove, a deformation hole and a fastening hole; the upper clamping jaw and the lower clamping jaw are arranged opposite to each other at the front end with the deformation groove in between, and are connected at the rear end; the deformation hole is provided at the connection between the upper clamping jaw and the lower clamping jaw and is connected to the deformation groove; The upper clamping jaw has a first narrow portion and a first protrusion protruding from the side of the first narrow portion, the lower clamping jaw has a second narrow portion and a second protrusion protruding from the side of the second narrow portion, and the first protrusion and the second protrusion are sandwiched to define a blade seat; The fastening hole passes through the first narrow portion from top to bottom and extends to the upper portion of the second narrow portion through the deformation groove. The fastener is inserted into the fastening hole to connect and compress the upper clamping jaw and the lower clamping jaw. The distance between the fastening hole and the blade seat is smaller than the distance between the fastening hole and the deformation hole.

2. The clamping device according to claim 1, characterized in that: The side surface of the second narrow portion on the same side as the blade seat is a first concave arc-shaped side surface, and a first air avoidance area is formed in front of the first arc-shaped side surface.

3. The clamping device according to claim 2, characterized in that: The side surface of the second narrow portion opposite to the blade seat is a second concave arc-shaped side surface, and a second air-avoiding area is formed in front of the second arc-shaped side surface.

4. The clamping device according to claim 1, characterized in that: The lower end surface of the first protrusion and the upper end surface of the second protrusion respectively form two opposite upper clamping surfaces and a lower clamping surface of the blade seat.

5. The clamping device according to claim 4, characterized in that: The middle parts of the upper clamping surface of the knife seat and the lower clamping surface of the knife seat are respectively raised.

6. The clamping device according to claim 1, characterized in that: Also included is a cooling structure, the cooling structure comprising: A main channel is provided in the clamping handle, is in fluid communication with the first water channel and the second water channel, and is in fluid communication with a cooling water interface provided on the clamping handle; The first water channel is disposed in the upper clamping jaw and is in fluid communication with a first water outlet disposed on the first protrusion; The second water channel is arranged in the lower clamping jaw and is in fluid communication with a second water outlet arranged on the second protrusion.

7. The clamping device according to claim 6, characterized in that: The fastening hole forms a blind hole at an upper portion of the second narrow portion.

8. The clamping device according to claim 7, characterized in that: The second water channel maintains a certain distance from the blind hole.

9. A cutting tool, characterized in that: The invention comprises a cutting insert and the clamping device according to any one of claims 1 to 8, wherein the cutting insert is accommodated and clamped in the insert seat.

Images