CN213729608U

CN213729608U - Milling cutter with replaceable cutter

Info

Publication number: CN213729608U
Application number: CN202022352560.7U
Authority: CN
Inventors: 郑龙朝; 董坤
Original assignee: Zhejiang Longwei Precision Industry Co ltd
Current assignee: Zhejiang Longwei Precision Industry Co ltd
Priority date: 2020-10-21
Filing date: 2020-10-21
Publication date: 2021-07-20
Anticipated expiration: 2030-10-21

Abstract

A milling cutter with replaceable cutters comprises a cutter handle, a cutter head and a cutter. The tool bit includes a tool pocket and a first mounting hole. The cutter comprises a cutter holder, a second mounting hole, a locking piece and a blade. The positions of the first mounting hole and the second mounting hole are corresponding, the locking piece penetrates through the first mounting hole and the second mounting hole, the cutter is fixed in the cutter groove, and therefore the cutter is fixed and detached through the locking piece. One of the inserts protrudes out of the tool pocket and is a working insert for milling, and the other two inserts are replacement inserts in the tool pocket. When one the blade is worn, will retaining member unscrews, through rotatory the cutter change not worn and torn the blade to can continue to use, when three when the blade all is worn and torn, direct change the cutter can, avoid changing whole milling cutter, thereby material saving and cost.

Description

Milling cutter with replaceable cutter

Technical Field

The utility model relates to a lathe cutter technical field, in particular to milling cutter of removable cutter.

Background

A milling cutter is a rotating tool with one or more cutter teeth for milling. When in work, each cutter tooth cuts off the allowance of the workpiece intermittently. The milling cutter is mainly used for processing planes, steps, grooves, formed surfaces, cut-off workpieces and the like on a milling machine. The milling cutter has the advantages that the materials of the blades of the milling cutter are different from those of the milling cutter, the blades are made of materials with higher strength, such as diamond and the like, at present, most of cutters are integrally formed, and when the blades of the milling cutter are milled for many times, the blades of the milling cutter are worn or even scrapped. Once the blade is worn, the milling quality and efficiency are affected, so that the production efficiency and quality of the product are reduced, the milling cutter needs to be frequently replaced, and the integrally formed milling cutter causes material waste and cost increase when being replaced.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a milling cutter with replaceable cutter to solve the above technical problems.

A replaceable cutting tool milling cutter includes a cutting head and a cutting tool disposed on the cutting head. The tool bit comprises a first mounting hole arranged on the tool bit and a tool groove arranged on the tool bit. The cutter groove comprises a first avoiding surface arranged on the cutter head, a second avoiding surface arranged on the cutter head and an arc-shaped surface arranged between the first avoiding surface and the second avoiding surface. The first and second avoidance surfaces have an acute angle in the extension direction, the first and second avoidance surfaces have a gradually decreasing distance between the surfaces, and the two ends of the arc surface are respectively connected with one end of the first and second avoidance surfaces and are located between the first and second avoidance surfaces. The cutter comprises a cutter holder arranged in the cutter groove, a second mounting hole arranged at the center of the cutter holder, a locking piece arranged in the second mounting hole in a penetrating mode, and three blades arranged on the cutter holder. The plane of two side surfaces of the tool apron, which is close to the first avoiding surface and the second avoiding surface, is parallel to the plane of the first avoiding surface and the plane of the second avoiding surface, the positions of the first mounting hole and the second mounting hole are corresponding, and the locking piece penetrates through the first mounting hole and the second mounting hole, so that the tool is fixed or detached. The three blades are arranged on the cutter seat at intervals, the arrangement directions of the three blades are the same, one blade extends out of the cutter groove, and the other two blades are positioned in the cutter groove.

Further, the milling cutter with the replaceable cutter also comprises a cutter handle which is integrally formed with the cutter head.

Further, the length of the first avoidance surface is smaller than that of the second avoidance surface.

Furthermore, the blade is connected with the cutter holder in a welding mode.

Further, the cross section of the blade is V-shaped.

Further, a certain clearance is formed between the tool apron and the tool groove, and the clearance is an avoiding groove.

Further, the tool bit further comprises an abutting block arranged on the tool bit, and the abutting block is arranged on the side edge of the top end of the tool bit and is attached to the cutter.

Further, the cutter also comprises three discharge grooves arranged between the blade and the blade holder.

Further, the discharge groove is in arc transition.

Compared with the prior art, the utility model provides a pair of removable cutter's milling cutter is through the design the tool bit with the cutter structure, specifically, the tool bit includes that one is seted up cutter groove on the tool bit, and one sets up first mounting hole on the tool bit. The cutter comprises a cutter holder arranged in the cutter groove, a second mounting hole arranged on the cutter holder, a locking piece arranged in the second mounting hole in a penetrating mode, and three blades arranged on the cutter holder at intervals. The retaining member penetrates through the first mounting hole and the second mounting hole, and the cutter is fixed in the cutter groove, so that the cutter is fixed and detached through the retaining member. The three blades are arranged on the tool apron at intervals, the arrangement directions of the three blades are the same, one blade extends out of the tool groove and is used for milling for a working blade, and the other two blades are positioned in the tool groove and are used as replacement blades. When one the blade is worn, will retaining member unscrews, through rotatory the cutter change not worn and torn the blade to can continue to use, when three when the blade all is worn and torn, direct change the cutter can, avoid changing whole milling cutter, thereby material saving and cost.

Drawings

Fig. 1 is an exploded schematic view of a milling cutter with replaceable cutting tools according to the present invention.

Fig. 2 is a schematic view of the milling cutter of fig. 1 with replaceable cutting tools.

Fig. 3 is an enlarged schematic view at a of the replaceable tool milling cutter of fig. 2.

Fig. 4 is a schematic view of another angular configuration of the replaceable cutting tool milling cutter of fig. 2.

Detailed Description

Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

As shown in fig. 1 to 4, it is a schematic structural diagram of the milling cutter with replaceable cutter according to the present invention. The replaceable cutting tool milling cutter comprises a shank 10, a cutting head 20 arranged on the shank, and a cutting tool 30 arranged on the cutting head 20. It is contemplated that the replaceable cutting insert milling cutter includes other functional modules, such as a milling cutter clamping assembly, a rotating motor, etc., which are well known to those skilled in the art and will not be described herein.

The tool shank 10 is used for accommodating the tool head 20 and is connected to a holding device (not shown). In order to better clamp the tool shank 10 in the clamping device, the tool shank 10 is provided with profiled columns. And fixing the milling cutter by the clamping device and driving the milling cutter to rotate so as to mill. Which is per se prior art and will not be described in further detail herein.

The cutting head 20 comprises an abutting block 21 arranged on the cutting head 20, a cutter groove 22 arranged on the cutting head 20, and a first mounting hole 23 arranged on the cutting head 20. The shank 10 and the cutting head 20 may be integrally formed. The abutting block 21 is arranged on the side edge of the top end of the cutter head 20, the cutter 30 is attached, and the abutting block 21 is used for abutting against the cutter 30 during milling of the milling cutter, so that the strength of the cutter 30 is enhanced. The tool groove 22 is formed in a side surface of the tool bit 20, and is used for accommodating the tool 30. The tool pocket 22 includes a first relief surface 221 provided on the tool tip 20, a second relief surface 222 provided on the tool tip 20, and an arcuate surface 223 provided between the first and

second relief surfaces

221, 222. The length of the first avoidance surface 221 is smaller than the length of the second avoidance surface 222. The included angle between the extending directions of the first and second avoiding

surfaces

221 and 222 is an acute angle, and the distance between the first and second avoiding

surfaces

221 and 222 gradually decreases toward the arc surface 223. The two ends of the arc surface 223 are respectively connected with one ends of the first and second avoiding

surfaces

221, 222 and located between the first and second avoiding

surfaces

221, 222, so as to form the tool seat 20 capable of accommodating the tool 30.

The cutter 30 comprises a cutter seat 31 arranged in the cutter groove 22, a second mounting hole 32 arranged on the cutter seat 31, a locking member 33 arranged in the second mounting hole 32 in a penetrating manner, three blades 34 arranged on the cutter seat 31, and three discharge grooves 35 arranged between the blades 34 and the cutter seat 31.

The second mounting hole 32 is disposed at the center of the tool holder 31, and the locking member 33 penetrates through the first and

second mounting holes

21 and 32 to fix the tool 30 in the tool slot 22, so that the tool 30 can be fixed and disassembled by the locking member 33. The planes of the two side surfaces of the tool seat 31 close to the first and second avoiding

surfaces

221 and 222 are parallel to the planes of the first and second avoiding

surfaces

221 and 222, respectively, and have a certain gap, so that the tool 30 can be disposed in the tool pocket 22 without touching the tool pocket 22. The clearance between the tool holder 31 and the tool groove 29 is a relief groove, and the tool 30 is prevented from contacting the tool groove 20 when being mounted, thereby improving the assembling accuracy.

The three inserts 34 are arranged on the tool seat 31 at intervals, the arrangement directions of the three inserts 34 are the same, one of the inserts 34 extends out of the tool slot 20 and the abutting block 21 is attached, and is used for milling for a working insert, and the other two inserts 34 are located in the tool slot 20 and are used as replacement inserts, so that when the milling cutter works, the two inserts 34 located in the tool slot 20 cannot affect milling. When one of the blades 34 is worn, the locking member 33 is unscrewed, and the blade 34, which is not worn, is replaced by rotating the cutter 30, so that it can be used continuously. When all three of the blades 34 are worn, the cutter 30 can be directly replaced, and the whole milling cutter is not replaced, so that the material and the cost are saved. The blade 34 and the blade holder 31 are connected by welding. The insert 34 is V-shaped in cross-section and can be varied according to the actual shape to be milled. The discharge groove 35 is arranged between the insert 34 and the insert seat 31, and is used for discharging waste materials during rotary milling of the milling cutter, so that excessive waste materials are prevented from influencing milling. The discharge groove 35 is in a circular arc transition, so that stress concentration at the connection part of the blade 34 and the blade holder 31 is prevented.

Compared with the prior art, the utility model provides a pair of removable cutter's milling cutter is through the design tool bit 20 with the cutter 30 structure, specifically, tool bit 20 includes that one is seted up tool groove 22 on tool bit 20, and one sets up first mounting hole 23 on tool bit 20. The cutter 30 includes a cutter seat 31 disposed in the cutter slot 22, a second mounting hole 32 disposed on the cutter seat 31, a locking member 33 inserted into the second mounting hole 32, and three blades 34 spaced apart from each other on the cutter seat 31. The locking member 33 penetrates through the first and second mounting holes 21 and 32 to fix the cutter 30 in the cutter groove 22, so that the fixing and detaching of the cutter 30 are realized through the locking member 33. The three inserts 34 are arranged on the tool seat 31 at intervals, and the three inserts 34 are arranged in the same direction, wherein one insert 34 extends out of the tool groove 20 and is used for milling for a working insert, and the other two inserts 34 are arranged in the tool groove 20 and are used as replacement inserts. When one blade 34 is worn, the locking piece 33 is screwed out, the blade 34 which is not worn is replaced by rotating the cutter 30, so that the cutter can be continuously used, when three blades 34 are worn, the cutter 30 can be directly replaced, the whole milling cutter is not replaced, and the material and the cost are saved.

The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.

Claims

1. A milling cutter with a replaceable cutting tool, characterized in that: the milling cutter with the replaceable cutter comprises a cutter head and a cutter arranged on the cutter head, wherein the cutter head comprises a first mounting hole arranged on the cutter head and a cutter groove arranged on the cutter head, the cutter groove comprises a first avoiding surface arranged on the cutter head, a second avoiding surface arranged on the cutter head and an arc-shaped surface arranged between the first avoiding surface and the second avoiding surface, the included angle of the extending direction of the first avoiding surface and the second avoiding surface is an acute angle, the distance between the first avoiding surface and the second avoiding surface is gradually reduced towards the arc-shaped surface, two ends of the arc-shaped surface are respectively connected with one end of the first avoiding surface and one end of the second avoiding surface and are positioned between the first avoiding surface and the second avoiding surface, the cutter comprises a cutter seat arranged in the cutter groove and a second mounting hole arranged at the central position of the cutter seat, one wears to establish retaining member in the second mounting hole to and three setting is in blade on the blade holder, the blade holder is close to first, second dodge two side surface place planes of face respectively in first, second dodge the face place plane parallel, the position of first, second mounting hole is corresponding, the retaining member wears to establish first, second mounting hole, so that the cutter is fixed or dismantles, three the blade interval sets up on the blade holder, and three the direction that sets up of blade is the same, one of them the blade stretches out the cutter groove, two in addition the blade is located the cutter inslot.

2. The replaceable cutting tool milling cutter as set forth in claim 1, wherein: the milling cutter with the replaceable cutter also comprises a cutter handle which is integrally formed with the cutter head.

3. The replaceable cutting tool milling cutter as set forth in claim 1, wherein: the length of the first avoidance surface is smaller than that of the second avoidance surface.

4. The replaceable cutting tool milling cutter as set forth in claim 1, wherein: the blade is connected with the cutter holder in a welding mode.

5. The replaceable cutting tool milling cutter as set forth in claim 1, wherein: the cross section of the blade is V-shaped.

6. The replaceable cutting tool milling cutter as set forth in claim 1, wherein: a certain clearance is arranged between the tool apron and the tool groove, and the clearance is an avoiding groove.

7. The replaceable cutting tool milling cutter as set forth in claim 1, wherein: the tool bit further comprises an abutting block arranged on the tool bit, and the abutting block is arranged on the side edge of the top end of the tool bit and is attached to the tool.

8. The replaceable cutting tool milling cutter as set forth in claim 1, wherein: the cutter still includes three setting in the blade with the discharge chute between the blade holder.

9. The replaceable cutting tool milling cutter as set forth in claim 8, wherein: the discharge groove is in arc transition.