PCBN (Polycrystalline Cubic Boron Nitride) cutter with chip breaker groove

Abstract

The utility model discloses a PCBN cutter with a chip breaker groove, and relates to the technical field of PCBN cutters, the PCBN cutter comprises a cutter handle, a blade and a locking piece, one side of the cutter handle is provided with a convex block, and the convex block is internally provided with a lock hole; a fixing groove is formed in the blade, a chip breaker groove is formed in the blade face of the blade, and the chip breaker groove is formed along the edge of the blade; the locking piece comprises a locking stud and a locking fastener, the locking stud is inserted into the locking hole, a threaded hole is formed in one side of the locking fastener, and the locking stud is in threaded connection with the interior of the threaded hole. According to the utility model, the chip breaker groove arranged on the blade can be used for forcibly breaking chips in the production process, so that the condition that the continuous chips wind the blade, the cutter bar, a workpiece and the like in the machining process can be completely controlled; the locking piece composed of the locking stud and the locking fastener can achieve the stable fixing effect, and the use safety performance of the cutter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of PCBN tool, in particular to a PCBN tool with a chip breaker groove. Background Art

[0002] PCBN (Cubic Boron Nitride Polycrystalline) is a kind of tool material that is currently most suitable for high-speed machining of iron-based metals. It is made by mixing CBN micropowder with a small amount of binder and then artificially synthesized under high temperature and high pressure conditions. It has high hardness and is difficult to process. For a long time, it has only been processed into a flat tool without grooves and widely used in the processing of hard-to-process materials such as hardened steel, high-speed steel, and high-alloy wear-resistant cast iron surface spray welding materials.

[0003] In the existing continuous turning of hardened steel, high-speed steel, etc., due to the characteristics of the cut material, continuous chips will appear during processing. Since the chips cannot be effectively broken, the chips often entangle the tool, the tool bar and the workpiece. Therefore, a PCBN tool with a chip breaker groove is proposed. Utility Model Content

[0004] Technical issues solved

[0005] The utility model aims to make up for the deficiencies of the prior art and provides a PCBN tool with a chip breaker.

[0006] Technical Solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a PCBN tool with a chip breaker, comprising a tool handle, a blade and a locking member.

[0008] A convex block is provided on one side of the knife handle, and a locking hole is provided inside the convex block;

[0009] The blade is provided with a fixing groove, the blade surface is provided with a chip breaker groove, and the chip breaker groove is provided along the edge of the blade;

[0010] The locking member comprises a locking stud and a locking fastener. The locking stud is inserted into the locking hole. A threaded hole is formed on one side of the locking fastener. The locking stud is threadedly connected to the inside of the threaded hole.

[0011] Preferably, a fastener insertion hole is provided on the blade.

[0012] Preferably, the fastener insertion hole is arranged at the center of the fixing groove, and the locking fastener is inserted into the fastener insertion hole.

[0013] Preferably, the fixing groove is matched with the protrusion, and the protrusion is embedded in the fixing groove.

[0014] Preferably, the cross-sectional shapes of the fixing groove and the protrusion are both rhombus-shaped.

[0015] Preferably, the chip breaker groove has a depth of 0.5 to 3 mm.

[0016] Beneficial effects:

[0017] Compared with the prior art, the PCBN tool with chip breaker has the following beneficial effects:

[0018] The utility model provides a chip breaker groove on the blade, which can force the chips to be broken during the production process, so that the occurrence of continuous chips wrapping around the blade, the tool rod and the workpiece during processing can be completely controlled. In addition, the tool handle and the blade of the device are connected by a locking piece, and the locking piece composed of a locking stud and a locking fastener can have a stable fixing effect, thereby improving the safety performance of the tool use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the split structure of the utility model;

[0020] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model;

[0021] Figure 3 It is a side structural schematic diagram of the utility model.

[0022] In the figure:

[0023] 1. Tool handle; 101. Bump; 102. Locking hole; 2. Blade; 201. Fixing groove; 202. Chip breaker groove; 203. Fastener socket; 3. Locking piece; 301. Locking stud; 302. Locking fastener; 3021. Threaded hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 to Figure 3 As shown, the utility model provides a technical solution: a PCBN tool with a chip breaker groove, including a tool handle 1, a blade 2 and a locking member 3.

[0026] A protrusion 101 is provided on one side of the knife handle 1, and a locking hole 102 is provided inside the protrusion 101;

[0027] The blade 2 is provided with a fixing groove 201, and the blade 2 is provided with a chip breaker groove 202 on the blade surface. The chip breaker groove 202 is provided along the edge of the blade 2. The chip breaker groove 202 is provided on the blade 2, and the chips in the production process can be forced to break, so that the occurrence of continuous chips wrapping around the blade, the tool rod and the workpiece during processing can be completely controlled;

[0028] The locking member 3 includes a locking stud 301 and a locking fastener 302. The locking stud 301 is inserted into the locking hole 102. A threaded hole 3021 is provided on one side of the locking fastener 302. The locking stud 301 is threadedly connected to the inside of the threaded hole 3021. The handle 1 and the blade 2 are connected via the locking member 3. When in use, the locking fastener 302 is inserted into the fastener insertion hole 203, and the locking stud 301 is inserted into the locking hole 102. Then, the locking stud 301 can be threadedly connected into the threaded hole 3021 of the locking fastener 302. The locking member 3 can be tightened to fix the handle 1 and the blade 2, thereby improving the safety performance of the tool.

[0029] Please pay attention to Figure 1 and Figure 2 A fastener insertion hole 203 is provided on the blade 2, and the fastener insertion hole 203 is set at the center of the fixing groove 201. The locking fastener 302 is inserted into the fastener insertion hole 203. The fixing groove 201 is adapted to the protrusion 101, and the protrusion 101 is embedded in the inside of the fixing groove 201.

[0030] In the present application, the cross-sectional shape of the fixing groove 201 and the protrusion 101 may be a rhombus, a polygon or an irregular shape, but not a circle.

[0031] Furthermore, the chip breaker groove 202 in the present application has a groove depth of 0.5 to 3 mm.

[0032] Working principle: A chip breaker groove 202 is provided on the blade 2, which can force the chips to be broken during the production process, so that the occurrence of continuous chips entangled with the blade, tool rod and workpiece during processing can be completely controlled. In addition, the tool handle 1 and the blade 2 of the device are connected through a locking piece 3. When in use, the locking fastener 302 is inserted into the fastener socket 203, and the locking stud 301 is inserted into the locking hole 102. Then the locking stud 301 can be threaded into the threaded hole 3021 of the locking fastener 302, and the locking piece 3 can be tightened to fix the tool handle 1 and the blade 2, thereby improving the safety performance of the tool use.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PCBN tool with a chip breaker, comprising a tool handle (1), a blade (2) and a locking member (3), characterized in that: A convex block (101) is provided on one side of the knife handle (1), and a locking hole (102) is provided inside the convex block (101); The blade (2) is provided with a fixing groove (201), the blade surface of the blade (2) is provided with a chip breaker groove (202), and the chip breaker groove (202) is arranged along the edge of the blade (2); The locking member (3) comprises a locking stud (301) and a locking fastener (302); the locking stud (301) is inserted into the locking hole (102); a threaded hole (3021) is formed on one side of the locking fastener (302); and the locking stud (301) is threadedly connected to the inside of the threaded hole (3021).

2. A PCBN tool with a chip breaker according to claim 1, characterized in that: The blade (2) is provided with a fastener insertion hole (203).

3. A PCBN tool with a chip breaker according to claim 2, characterized in that: The fastener insertion hole (203) is arranged at the center of the fixing groove (201), and the locking fastener (302) is inserted into the fastener insertion hole (203).

4. A PCBN tool with a chip breaker according to claim 1, characterized in that: The fixing groove (201) is adapted to the protrusion (101), and the protrusion (101) is embedded in the fixing groove (201).

5. The PCBN tool with a chip breaker according to claim 1, characterized in that: The cross-sectional shapes of the fixing groove (201) and the protrusion (101) are both rhombus-shaped.

6. A PCBN tool with a chip breaker according to claim 1, characterized in that: The chip breaker groove (202) has a groove depth of 0.5 to 3 mm.

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