Outer circle cutter handle capable of meeting fast feeding of super-hard blade and cutter with outer circle cutter handle

Abstract

The utility model relates to an outer circle cutter handle capable of meeting fast feeding of a superhard blade and a cutter thereof, the outer circle cutter handle comprises a cutter handle part and a cutting part fixed at one end of the cutter handle part, a blade fixing groove and a fixing screw mounting groove are formed in the cutting part, and the blade fixing groove is communicated with the fixing screw mounting groove. The blade fixing groove is an open groove defined by a positioning bottom face, a first combination side face and a second combination side face, the positioning bottom face is an inclined face forming an included angle with the horizontal plane, and the positioning bottom face is used for being combined with the superhard blade to enable a cutting edge of the superhard blade to form an included angle with the horizontal plane. According to the tool, the superhard blade is obliquely fixed in the blade fixing groove, so that the included angle is formed between the superhard blade and the horizontal plane, the impact resultant force borne by the superhard blade is converted into two impact component forces, and the effects of improving the impact resistance of the tool and reducing impact heat gathered at the tool nose are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of tool design, and in particular to an external cylindrical tool holder and a tool thereof that can meet the requirements of fast-feeding super-hard blades. Background Art

[0002] Superhard materials are widely used in cutting tools due to their high hardness and high wear resistance. Superhard cutting tools are mainly used for finishing and semi-finishing of materials such as hardened steel, cast iron, powder metallurgy, and non-ferrous metals. With the development of the manufacturing industry and the advancement of manufacturing technology, the requirements for cutting tools are getting higher and higher, and the application of superhard cutting tools is becoming more and more extensive.

[0003] During high-speed cutting, the back face of the superhard tool is in direct contact with the workpiece and is mainly subject to mechanical and physical wear; while the front face is mainly subject to chemical and thermal wear, resulting in the surface of the superhard material being extremely susceptible to oxidative wear during the processing process, which is reflected in the tool as blade chipping, resulting in a reduction in its life and an increase in cost. Utility Model Content

[0004] In order to improve the efficiency of superhard cutting tools during the machining process and make the blades have excellent impact resistance, the present application provides an external cylindrical tool holder and a tool thereof that can meet the requirements of fast feed superhard cutting blades.

[0005] In the first aspect, the present application provides an external cylindrical tool holder that meets the requirements of fast-feed superhard blades, which adopts the following technical solutions:

[0006] A cylindrical tool holder that meets the requirements of fast-feeding superhard blades, comprising a tool holder portion and a cutting portion fixed to one end of the tool holder portion, wherein a blade fixing groove and a fixing screw mounting groove are provided on the cutting portion, wherein the blade fixing groove is connected to the fixing screw mounting groove, wherein the blade fixing groove is an open groove surrounded by a positioning bottom surface, a first combining side surface and a second combining side surface, wherein the positioning bottom surface is an inclined surface that forms an angle with a horizontal plane, and wherein the positioning bottom surface is used to combine with a superhard blade so that the cutting edge of the superhard blade forms an angle with the horizontal plane.

[0007] By adopting the above technical solution and setting an inclined bottom positioning surface, when the superhard blade is installed in the blade fixing groove, the cutting edge of the superhard blade forms an angle with the horizontal plane. When the superhard blade is turned, the impact force is split into two impact components, thereby improving the impact resistance of the superhard blade during fast feed turning and reducing the probability of edge chipping caused by straight impact during turning of the superhard blade. On the other hand, the position where the cutting edge of the blade is installed can also have a heat distribution effect, which will not cause local heat concentration on the tool head, reduce thermal wear, and thus increase the tool life.

[0008] Preferably, the cutting portion includes two upper and lower traveling planes, a plurality of air-avoiding surfaces enclosed to form a side surface, and an inclined surface, the inclined surface is parallel to the positioning bottom surface, and the first combining side surface and the second combining side surface are combined to form an angle.

[0009] By adopting the above technical solution, an inclined surface parallel to the positioning bottom surface is provided, so that the superhard blade can avoid air during the feeding and cutting process.

[0010] Preferably, the blade fixing groove is provided at the junction of the inclined surface and the air avoidance surface.

[0011] By adopting the above technical solution, the installation of the superhard blade and the feeding and cutting of the superhard blade are facilitated.

[0012] Preferably, the cutting portion is further provided with three avoidance grooves connected to the blade fixing groove, and the three avoidance grooves are respectively opened at the junction of the positioning bottom surface and the first combining side surface, the junction of the positioning bottom surface and the second combining side surface, and the junction of the first combining side surface and the second combining side surface, and the three avoidance grooves extend and intersect.

[0013] By adopting the above technical solution, three avoidance grooves connected to the blade fixing groove are opened to avoid interference between the superhard blade and the workpiece during turning.

[0014] In the second aspect, the present application provides a superhard tool that meets the requirements of fast feeding, adopting the following technical solution:

[0015] A superhard tool that meets the requirements of fast feeding: comprising an outer cylindrical tool handle for a superhard blade that meets the requirements of fast feeding, a superhard blade and a blade fixing screw, wherein the superhard blade is tiltedly arranged in the blade fixing groove, the cutting edge of the superhard blade forms an angle α with the horizontal plane, and the angle α is 10° to 80°, and a screw mounting hole for mounting the blade fixing screw is provided on the superhard blade.

[0016] By adopting the above technical solution, the cutting edge of the superhard blade forms an angle α with the horizontal plane. When the superhard blade is turned, the impact force is split into two impact components, thereby improving the impact resistance of the superhard blade during fast feed turning, reducing the probability of edge chipping caused by direct impact during the turning process of the superhard blade, and improving the problem of cutting heat concentration.

[0017] Preferably, the superhard blade includes a cutter head base and a cutter head, and the cutter head is arranged on both sides of the cutter head base.

[0018] By adopting the above technical solution, by arranging blades on both sides of the front and back sides of the cutter head base, it is convenient for bidirectional use, reduces the frequency of tool change, improves turning efficiency, and is more economical.

[0019] Preferably, four of the cutter heads are provided, two of which are provided on each side of the cutter head base, the two cutter heads on the same side are arranged opposite to each other, and the two cutter heads on different sides are arranged in a staggered manner.

[0020] By adopting the above technical solution, four cutter heads are provided, which is more conducive to improving the turning efficiency. The two cutter heads on the same side are staggered, and the two cutter heads on different sides are staggered. When the cutter head on one side is used for feed turning, the cutting edges of the two cutter heads on the other side will not affect the turning of the workpiece.

[0021] Preferably, the cutting edge of the cutter head is a straight edge or an arc edge.

[0022] By adopting the above technical solution, the cutting edge of the cutter head can be a straight edge or an arc edge, and can be projected onto the processing surface during the processing to achieve finishing effect and meet the fast feed requirements.

[0023] Preferably, the superhard blade includes a first bottom positioning surface, a second bottom positioning surface, two oppositely disposed first mounting surfaces and two oppositely disposed second mounting surfaces, the cross-section of the first bottom positioning surface is a first parallelogram, the cross-section of the second bottom positioning surface is a second parallelogram, the length of the first parallelogram is greater than the second parallelogram, and the width of the first parallelogram is smaller than the second parallelogram.

[0024] By adopting the above technical solution, the shape of the superhard blade is a special-shaped blade, which is convenient for installation on both sides of the superhard blade and ensures that the cutting force is the same when the front and back sides are installed.

[0025] Preferably, a first positioning surface is processed on the first mounting surface, and a second positioning surface is processed on the second mounting surface. Both the first positioning surface and the second positioning surface are arched surfaces, and the cutting shapes of the first positioning surface and the second positioning surface are opposite.

[0026] By adopting the above technical solution and processing the first positioning surface and the second positioning surface, the installation of the superhard blade in the blade fixing groove is facilitated.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The present invention fixes the superhard blade in a blade fixing groove at an angle so that the superhard blade forms an angle with the horizontal plane. When turning, the combined impact force on the superhard blade can be converted into two impact components, thereby improving the impact resistance of the tool, reducing the probability of chipping of the superhard blade under high impact, reducing the impact heat accumulated at the tool tip during turning, and reducing the probability of damage to the superhard blade;

[0029] 2. By setting four cutter heads on both sides of the superhard blade, it is convenient for bidirectional use, reduces the frequency of tool change, and is more economical;

[0030] 3. By providing the first positioning surface and the second positioning surface, it is easy to install and position the superhard blade in the blade fixing groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 The present application is to provide a structural schematic diagram showing that the cutting edge of a superhard blade forms an angle α with a horizontal plane.

[0032] Figure 2 This is a schematic structural diagram of an external cylindrical tool holder that meets the requirements of fast feed of superhard blades in the present application.

[0033] Figure 3 It is a schematic diagram of the structure of a superhard tool that meets the requirements of fast feed in this application.

[0034] Figure 4 It is a schematic diagram of the structure of a superhard blade.

[0035] Figure 5 It is a front view of the first bottom positioning surface of the superhard blade.

[0036] Figure 6 It is a front view of the second bottom positioning surface of the superhard blade.

[0037] Explanation of the accompanying drawings: 1. Tool body; 101. Blade fixing groove; 102. Fixing screw mounting groove; 103. Air avoidance groove; 11. Handle portion; 12. Cutting portion; 121. Air avoidance surface; 122. Inclined surface; 123. Positioning bottom surface; 124. First combining side surface; 125. Second combining side surface; 2. Superhard blade; 21. Cutting head base; 211. Screw mounting hole; 22. Cutting head; 201. First bottom positioning surface; 202. Second bottom positioning surface; 203. First mounting surface; 204. Second mounting surface; 205. First positioning surface; 206. Second positioning surface; 3. Blade fixing screw. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-6 This application is described in further detail.

[0039] The present application embodiment discloses an external cylindrical tool holder that meets the requirements of fast feed superhard blades. Figure 1 and Figure 2The outer cylindrical tool holder that meets the requirements of fast-feed superhard blades includes a tool holder portion 11 and a cutting portion 12 fixed at one end of the tool holder portion 11. The cutting portion 12 is provided with a blade fixing groove 101 and a fixing screw installation groove 102, and the blade fixing groove 101 is connected to the fixing screw installation groove 102. The blade fixing groove 101 is an open groove surrounded by a positioning bottom surface 123, a first combining side surface 124 and a second combining side surface 125. The positioning bottom surface 123 is an inclined surface 122 that forms an angle with the horizontal plane, and the positioning bottom surface 123 is used to combine with the superhard blade 2 so that the cutting edge of the superhard blade 2 forms an angle with the horizontal plane. When the superhard blade 22 is turned, the impact force is split into two impact components, thereby improving the impact resistance of the superhard blade 2 during fast-feed turning and reducing the probability of chipping caused by direct impact during the turning process of the superhard blade 2; on the other hand, it can also make the position where the blade cutting edge is installed also have a heat distribution effect, which will not cause local heat concentration of the tool head 22, reduce thermal wear, and thus improve the tool life.

[0040] Reference Figure 2 The cutting portion 12 includes two upper and lower traveling planes, a plurality of air-avoiding surfaces 121 enclosing and forming a side surface, and an inclined surface 122. The inclined surface 122 is parallel to the positioning bottom surface 123, and the first combining side surface 124 and the second combining side surface 125 are combined to form an angle. When the superhard blade 2 is installed in the blade fixing groove 101, the inclined surface 122 and the first bottom positioning surface 201 and the second bottom positioning surface 202 are in the same plane. And the blade fixing groove 101 is opened at the junction of the inclined surface 122 and the air-avoiding surface 121, so as to facilitate the installation of the superhard blade 2 and the feeding and cutting of the superhard blade 2.

[0041] Further, see Figure 2 The cutting portion 12 is also provided with three avoidance grooves 103 connected to the blade fixing groove 101, and the three avoidance grooves 103 are respectively provided at the junction of the positioning bottom surface 123 and the first combination side surface 124, the junction of the positioning bottom surface 123 and the second combination side surface 125, and the junction of the first combination side surface 124 and the second combination side surface 125. The three avoidance grooves 103 extend and intersect to prevent the superhard blade 2 from interfering with the workpiece during turning.

[0042] The present application also discloses a superhard tool that meets the requirements of fast feeding. Figure 1 and Figure 3, a superhard tool that meets the requirements of fast feed includes an outer cylindrical tool holder for a superhard blade that meets the requirements of fast feed in the embodiment of the present application, and also includes a superhard blade 2 installed in a blade fixing groove 101 and a blade fixing screw 3 for fixing the superhard blade 2. The superhard blade 2 is tilted in the blade fixing groove 101 so that the cutting edge of the superhard blade 2 forms an angle α with the horizontal plane. And the angle α can be any angle from 10° to 80°. This application takes the angle α of 45° as an example for explanation. Thereby, the impact force of the superhard blade 2 during turning is split into two impact components, reducing the probability of chipping caused by direct impact during the turning process of the superhard blade. A through screw mounting hole 211 is provided on the superhard blade 2.

[0043] Reference Figure 4 , Figure 5 and Figure 6 The superhard blade 2 includes a cutter head base 21 and a cutter head 22. Four cutter heads 22 are arranged on both sides of the cutter head base 21, which is convenient for bidirectional use, reduces the frequency of replacing the cutter head 22, improves turning efficiency, and is more economical.

[0044] Furthermore, two of the four cutter heads 22 are arranged on each side of the cutter head base 21, and the two cutter heads 22 on the same side are arranged opposite to each other, and the two cutter heads 22 on different sides are arranged in a staggered manner, so as to avoid the cutting edges of the two cutter heads 22 on the other side affecting the turning of the workpiece when the cutter head 22 on one side is used for cutting.

[0045] The cutting edge of the cutter head 22 can be a straight cutting edge or a circular arc cutting edge, and can be projected onto the processing surface during the processing to achieve a finishing effect and meet the fast feed requirement.

[0046] The superhard blade 2 includes a first bottom positioning surface 201, a second bottom positioning surface 202, two oppositely disposed first mounting surfaces 203, and two oppositely disposed second mounting surfaces 204. The cross section of the first bottom positioning surface 201 is a first parallelogram, the cross section of the second bottom positioning surface 202 is a second parallelogram, the length of the first parallelogram is greater than the second parallelogram, and the width of the first parallelogram is less than the second parallelogram.

[0047] Reference Figure 4 In order to facilitate the positioning of the superhard blade 2 in the blade fixing groove 101, a first positioning surface 205 is processed on the first mounting surface 203, and a second positioning surface 206 is processed on the second mounting surface 204. The first positioning surface 205 and the second positioning surface 206 are both arched surfaces, and the cutting shapes of the first positioning surface 205 and the second positioning surface 206 are opposite, so as to facilitate positioning in both positive and negative directions and cooperate with the installation position of the cutter head 22.

[0048] The implementation principle of the superhard tool that meets the requirement of fast feed in the embodiment of the present application is as follows: the present application provides a blade fixing groove with an inclined positioning bottom surface on the outer cylindrical tool handle, and when the superhard blade 2 is tilted and fixed in the blade fixing groove 101, the superhard blade 2 forms an angle with the horizontal plane. When the tool is turning, the impact force received by the superhard blade 2 can be converted into two impact component forces, thereby improving the impact resistance of the tool, reducing the probability of chipping of the superhard blade 2 under high impact force, reducing the impact heat gathered at the tool tip during turning, and reducing the probability of damage to the superhard blade 2.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An external cylindrical tool holder for a superhard blade that meets the requirements of fast feed, characterized in that: The invention comprises a shank portion (11) and a cutting portion (12) fixed at one end of the shank portion (11); a blade fixing groove (101) and a fixing screw installation groove (102) are provided on the cutting portion (12); the blade fixing groove (101) is connected to the fixing screw installation groove (102); the blade fixing groove (101) is an open groove surrounded by a positioning bottom surface (123), a first combining side surface (124) and a second combining side surface (125); the positioning bottom surface (123) is an inclined surface forming an angle with a horizontal plane; the positioning bottom surface (123) is used to combine with a superhard blade (2) so that the cutting edge of the superhard blade (2) forms an angle with the horizontal plane.

2. The external cylindrical tool holder for superhard blades that can meet the requirements of fast feed according to claim 1, characterized in that: The cutting portion (12) comprises two upper and lower running planes, a plurality of clearance surfaces (121) enclosing and forming side surfaces, and an inclined surface (122); the inclined surface (122) is parallel to the positioning bottom surface (123); and the first combined side surface (124) and the second combined side surface (125) are combined to form an angle.

3. The outer cylindrical tool holder for superhard blades that can meet the requirements of fast feed according to claim 2 is characterized in that: The blade fixing groove (101) is provided at the junction of the inclined surface (122) and the clearance surface (121).

4. The external cylindrical tool holder for superhard blades that can meet the requirements of fast feed according to claim 1, characterized in that: The cutting portion (12) is also provided with three avoidance grooves (103) connected to the blade fixing groove (101); the three avoidance grooves (103) are respectively provided at the junction of the positioning bottom surface (123) and the first combining side surface (124), the junction of the positioning bottom surface (123) and the second combining side surface (125), and the junction of the first combining side surface (124) and the second combining side surface (125); the three avoidance grooves (103) extend and intersect.

5. A superhard tool that meets fast feed requirements, characterized in that: The invention comprises an external cylindrical tool holder for a fast-feed superhard blade as described in any one of claims 1 to 4, and also comprises a superhard blade (2) and a blade fixing screw (3), wherein the superhard blade (2) is tiltedly arranged in the blade fixing groove (101), and the cutting edge of the superhard blade (2) forms an angle α with the horizontal plane, and the angle α is 10° to 80°, and a screw mounting hole (211) for mounting the blade fixing screw (3) is provided on the superhard blade (2).

6. The superhard cutting tool for fast feeding according to claim 5, characterized in that: The superhard blade (2) comprises a cutter head base (21) and a cutter head (22), wherein the cutter head (22) is arranged on both sides of the cutter head base (21).

7. The superhard cutting tool for fast feeding according to claim 6, characterized in that: Four of the cutter heads (22) are provided, two of which are provided on each side of the cutter head base (21), the two cutter heads (22) on the same side are arranged opposite to each other, and the two cutter heads (22) on different sides are arranged in a staggered manner.

8. The superhard cutting tool capable of fast feeding according to claim 6, characterized in that: The cutting edge of the cutter head (22) is a straight cutting edge or a circular arc cutting edge.

9. The superhard cutting tool capable of fast feeding according to claim 5, characterized in that: The superhard blade (2) comprises a first bottom positioning surface (201), a second bottom positioning surface (202), two oppositely arranged first mounting surfaces (203) and two oppositely arranged second mounting surfaces (204), the cross section of the first bottom positioning surface (201) being a first parallelogram, the cross section of the second bottom positioning surface (202) being a second parallelogram, the length of the first parallelogram being greater than the second parallelogram, and the width of the first parallelogram being less than the second parallelogram.

10. The superhard cutting tool for fast feeding according to claim 9, characterized in that: A first positioning surface (205) is machined on the first mounting surface (203), and a second positioning surface (206) is machined on the second mounting surface (204); the first positioning surface (205) and the second positioning surface (206) are both arched surfaces, and the cutting shapes of the first positioning surface (205) and the second positioning surface (206) are opposite.

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