CBN (cubic boron nitride) coating blade with double-sided cutting function

Abstract

The utility model belongs to the technical field of cutting processing, and provides a CBN (Cubic Boron Nitride) coating blade with double-sided cutting, which comprises a CBN coating blade, a tool bit replacement structure is arranged outside the CBN coating blade, and a mounting structure is arranged inside the CBN coating blade. The tool bit replacement structure comprises two tool bit containing grooves formed in the top of one side of the front face of the CBN coating blade and the top of the other side of the back face of the CBN coating blade, two wedging insertion holes are formed in the two tool bit containing grooves at equal intervals, and the ends, away from each other, of the four wedging insertion holes are installed on wedging insertion rods correspondingly and fixedly arranged on the two tool bits in an inserted mode. First buffering pads are arranged on one sides of the interiors of the two tool bit containing grooves correspondingly, and second buffering pads are arranged on the other sides of the interiors of the two tool bit containing grooves correspondingly. The problems that according to existing equipment, rigid connection is adopted between a tool bit and a base, impact force cannot be buffered during cutting, and then the tool bit displaces to damage the base are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of cutting processing especially relates to a CBN coating blade with double-face cutting. BACKGROUND

[0002] CBN blade is synthesized under high temperature and high pressure by cubic boron nitride micro powder and a small amount of binder by artificial method, and the hardness thereof is only inferior to diamond and far higher than other materials, so it is collectively called superhard cutter with diamond cutter, and the thermal stability thereof is far higher than diamond, and has great chemical stability to iron series metal elements.

[0003] Through the retrieval, the patent with the publication number CN215033709U discloses a CBN coating blade with double-face cutting, which comprises a base, opposite two side faces of the base are provided with mounting grooves, detachable connection is achieved between the mounting grooves and tool bits, a plurality of first grooves and a plurality of second grooves are formed on the mounting grooves, the first grooves and the second grooves are perpendicular to each other, a plurality of first clamping keys and a plurality of second clamping keys are fixedly connected to the tool bits, the first clamping keys and the second clamping keys are perpendicular to each other, the cross-sectional areas of the first clamping keys and the second clamping keys gradually increase in the direction from the tool bits to the direction away from the tool bits, the first clamping keys are matched with the first grooves, the second clamping keys are matched with the second grooves, a first threaded hole is formed on the mounting groove, a second threaded hole is formed on the tool bit, and a bolt is arranged between the first threaded hole and the second threaded hole.

[0004] The existing equipment adopts rigid connection between the tool bit and the base, and the cutting cannot buffer the impact force, so that the problem of base damage caused by tool bit displacement occurs.

[0005] Therefore, it is necessary to provide a CBN coating blade with double-face cutting to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0006] In order to solve the above technical problems, the utility model provides a CBN coating blade with double-face cutting.

[0007] The utility model provides a CBN coating blade with double-face cutting, which comprises a CBN coating blade, a tool bit replacement structure is arranged outside the CBN coating blade, and a mounting structure is arranged inside the CBN coating blade.

[0008] The tool bit replacement structure comprises two tool bit placing grooves formed on the top of the front side and the top of the back side of the CBN coating blade, two wedge insertion holes are equidistantly formed in the inside of the two tool bit placing grooves, four wedge insertion holes are away from each other, and the one end of the four wedge insertion holes is connected to the wedge insertion rod fixedly arranged on the two tool bits through insertion, a buffer pad one is arranged on one side of the inside of the two tool bit placing grooves, and a buffer pad two is arranged on the other side of the inside of the two tool bit placing grooves.

[0009] In order to achieve the effect of rapid positioning, the utility model provides a CBN coating blade with double-sided cutting, preferably, the inside of two said tool head placing grooves and between said buffer pad one and said buffer pad two are provided with positioning chamfers.

[0010] In order to achieve the effect of double-sided cutting, the utility model provides a CBN coating blade with double-sided cutting, preferably, two said tool heads are provided with cutting edges away from one end of said CBN coating blade.

[0011] In order to achieve the effect of fixed installation, the utility model provides a CBN coating blade with double-sided cutting, preferably, said installation structure includes installation through hole provided in the center of said CBN coating blade.

[0012] In order to achieve the effect of avoiding the exposure of connecting bolts, the utility model provides a CBN coating blade with double-sided cutting, preferably, the both ends of said installation through hole are provided with countersunk grooves.

[0013] In order to achieve the effect of buffering the connecting part, the utility model provides a CBN coating blade with double-sided cutting, preferably, the inside of said installation through hole is fixedly provided with clamping ring through the slot opening and the outside circumferential side of buffer ring.

[0014] In order to achieve the effect of increasing the external wear resistance, the utility model provides a CBN coating blade with double-sided cutting, preferably, the outer surfaces of said CBN coating blade and two said tool heads are sprayed with wear-resistant coating.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The CBN coating blade with double-sided cutting solves the problem that the existing equipment cannot buffer the impact force in the cutting behavior because of the rigid connection between the tool head and the base, resulting in the displacement of the tool head and the damage of the base.

[0017] The CBN coating blade with double-sided cutting solves the problem that the existing equipment is inconvenient to align the two sides and the base during the installation of the tool head. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structure diagram of a preferred embodiment of the CBN coating blade with double-sided cutting provided by the utility model is shown;

[0019] Figure 2 The utility model discloses a CBN coating blade with double-sided cuttingFigure 1 The diagram shows the structure of the front side of the CBN-coated blade.

[0020] Figure 3 for Figure 1 The diagram shows the structure of the cutting head;

[0021] Figure 4 for Figure 1 The diagram shows the structure of structure A.

[0022] The following are the labeling elements in the diagram: 1. CBN coated insert; 2. Insert head replacement structure; 201. Insert head placement groove; 202. Wedged insertion hole; 203. Insert head; 204. Wedged insertion rod; 205. Positioning chamfer; 206. Buffer pad one; 207. Buffer pad two; 3. Mounting structure; 301. Mounting through hole; 302. Countersunk groove; 303. Buffer ring; 4. Cutting edge. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4 ,in, Figure 1 A schematic diagram of a preferred embodiment of a CBN-coated cutting blade with double-sided cutting capability provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the front side of the CBN-coated blade. Figure 3 for Figure 1 The diagram shows the structure of the cutting head;

[0025] Figure 4 for Figure 1 The schematic diagram of structure A shown includes a CBN-coated insert with double-sided cutting capability, including a CBN-coated insert 1, a tool head replacement structure 2 on the outside of the CBN-coated insert 1, and an installation structure 3 on the inside of the CBN-coated insert 1.

[0026] The cutting head replacement structure 2 includes two cutting head placement slots 201 located on the top of one side of the front and the top of the other side of the back of the CBN coated cutting head 1. Each of the two cutting head placement slots 201 has two wedge insertion holes 202 equidistantly arranged inside. The ends of the four wedge insertion holes 202 that are far apart from each other are connected to the wedge insertion rods 204 that are fixedly arranged on the two cutting heads 203 through insertion. Each of the two cutting head placement slots 201 has a buffer pad 206 on one side inside and a buffer pad 207 on the other side inside.

[0027] In the specific implementation process, refer to Figure 1As shown, the inside of the two cutter head placing grooves 201 between the buffer pad one 206 and the buffer pad two 207 is provided with a positioning chamfer 205.

[0028] It should be noted that the positioning chamfer 205 provided in the inside of the two cutter head placing grooves 201 can avoid the incomplete cutting or burr at the corner of the inside of the two cutter head placing grooves 201, so that the gap or jamming occurs when the two cutter head placing grooves 201 and the corresponding cutter head 203 are aligned, and the corner of the cutter head 203 can be clamped by the positioning chamfer 205, so that the misalignment problem does not easily occur during installation and use.

[0029] In the specific implementation process, referring to Figure 2 and Figure 3 As shown, the two cutter heads 203 away from one end of the CBN coated blade 1 are provided with cutting edges 4.

[0030] It should be noted that the two cutting edges 4 are provided on the outside, so that no matter the CBN coated blade 1 is installed in the forward or reverse direction, the orientations of the two cutting edges 4 are consistent outward, which can reduce the time for workers to distinguish the front and back surfaces during installation, and improve the installation efficiency.

[0031] In the specific implementation process, referring to Figure 2 and Figure 4 As shown, the mounting structure 3 includes a mounting through hole 301 provided through the center of the CBN coated blade 1.

[0032] It should be noted that the mounting through hole 301 is provided in the center of the CBN coated blade 1, and the pressure during cutting will be concentrated in the thickest position in the middle, which increases the ability of the CBN coated blade 1 to resist external impact force and reduces the problem of deformation. Moreover, the mounting through hole 301 can be inserted with a bolt for bolt installation at the working position, which avoids the problems of loose connection, tool breakage, misalignment and abnormal noise.

[0033] In the specific implementation process, referring to Figure 2 and Figure 4 As shown, the two ends of the mounting through hole 301 are provided with a counterbore groove 302.

[0034] It should be noted that the counterbore groove 302 at the two ends of the mounting through hole 301 can sink the nuts at the two ends of the bolt, which avoids the problem that the bolt is accidentally bent and damaged when the tool is hit.

[0035] In the specific implementation process, referring to Figure 1 and Figure 4 As shown, the inside of the mounting through hole 301 is provided with a slot and is fixedly provided with a clamping ring on the outer circumferential side of the buffer ring 303.

[0036] It should be noted that the inner center of the mounting through hole 301 is provided with a circular ring clasp, which realizes uniform and comprehensive stress behavior, and the buffer ring 303 is made of rubber material, which can buffer the impact force generated in the cutting behavior of the CBN coating blade 1, improve the connection tightness of the inner part of the mounting through hole 301 and the bolt, and not easy to appear the connection activity.

[0037] In the specific implementation process, referring to Figure 2 and Figure 3 It is shown that the CBN coating blade 1 and the outer surfaces of the two tool bits 203 are sprayed with wear-resistant coating.

[0038] It should be noted that the wear-resistant coating is made of nitriding metal, the thickness of the wear-resistant coating is 0.1-0.5mm, and the wear-resistant coating can increase the corrosion resistance and friction resistance of the CBN coating blade 1 and the outer surfaces of the two tool bits 203, and increase the service life of the CBN coating blade 1 and the two tool bits 203.

[0039] The working principle of the CBN coating blade with double-face cutting provided by the utility model is as follows:

[0040] In use, one end of the two tool bits 203 is aligned with the positioning chamfer 205 for positioning, then the wedge insertion rod 204 at the bottom end of the two tool bits 203 is inserted into the wedge insertion hole 202 inside the tool bit placing groove 201, and the interference fit between the two is realized by external impact, the rear end of the CBN coating blade 1 is aligned with the installation position, and the fixed positioning behavior is performed, the bolt penetrates the mounting through hole 301 and the installation position, and the nut is tightened for fixed setting, the tool bit 203 will bear impact force in multiple directions during cutting, and the corresponding buffer pad one 206 and buffer pad two 207 perform buffering behavior respectively, reducing the problem that the tool bit 203 directly impacts the CBN coating blade 1 during cutting.

[0041] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A CBN coated insert with double-sided cutting, comprising a CBN coated insert (1), characterized in that, The CBN-coated blade (1) is externally provided with a tool bit replacement structure (2), and internally provided with a mounting structure (3); The tool bit replacement structure (2) comprises two tool bit placing grooves (201) opened at the top of the front side and the top of the back side of the CBN-coated blade (1), two wedge insertion holes (202) are equidistantly opened in the interiors of the two tool bit placing grooves (201), four wedge insertion rods (204) are inserted and mounted at the corresponding fixed positions of the two tool bits (203) at the ends of the four wedge insertion holes (202) away from each other, a buffer pad one (206) is arranged at one side of the interior of each of the two tool bit placing grooves (201), and a buffer pad two (207) is arranged at the other side of the interior of each of the two tool bit placing grooves (201).

2. The CBN coated cutting tool with double-sided cutting according to claim 1, characterized in that, A positioning chamfer (205) is opened between the buffer pad one (206) and the buffer pad two (207) in the interiors of the two tool bit placing grooves (201).

3. The CBN coated cutting tool with double-sided cutting according to claim 1, wherein The two tool bits (203) are provided with cutting edges (4) at the ends away from the CBN-coated blade (1).

4. The CBN coated cutting tool having double-sided cutting according to claim 1, wherein, The mounting structure (3) comprises a mounting through hole (301) opened through the center of the CBN-coated blade (1).

5. A CBN coated cutting tool tip having double-sided cutting according to claim 4, wherein The mounting through hole (301) is provided with a countersunk groove (302) at each end.

6. The CBN coated cutting tool having double-sided cutting according to claim 4, wherein The mounting through hole (301) is internally connected with the clamping ring fixedly arranged on the outer circumferential side of the buffer ring (303) through the opening of the slot.

7. The CBN coated cutting tool having double-sided cutting according to claim 1, wherein The outer surfaces of the CBN-coated blade (1) and the two tool bits (203) are sprayed with wear-resistant coating.

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