CN210359463U

CN210359463U - Novel machining tool without regrinding

Info

Publication number: CN210359463U
Application number: CN201921357604.6U
Authority: CN
Inventors: 梁永红; 王应军; 王东; 申旭东; 康小雷
Original assignee: Zhangjiakou No1 Coal Mine Machinery Co ltd
Current assignee: Zhangjiakou No1 Coal Mine Machinery Co ltd
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-04-21
Anticipated expiration: 2029-08-20

Abstract

The utility model provides a novel processing cutter without regrinding, belonging to the technical field of special cutting tools for machining, a cutter bar and a blade; the cutter bar is used for being clamped in a cutter mounting hole of the milling machine spindle, and the lower end part of the cutter bar is provided with a abdicating groove; the blade passes through connecting piece demountable installation on the cutter arbor, is located the inslot of stepping down, and the groove of stepping down is used for providing the space of stepping down of dismantling the blade, and the blade is provided with the cutting edge portion of protrusion cutter arbor lateral wall. The novel knife bar of the non-regrinding processing knife tool provided by the utility model can be reused, and can be reused only by replacing a new knife blade after the knife blade is damaged, and is easy to cut; the blade is installed in the cutter arbor groove of stepping down to compress tightly the effect with the connecting piece implementation, guaranteed the firm connection and the easy to assemble of blade and cutter arbor. The novel non-regrinding machining cutter can also be installed on a milling machine for use, the operation is simple and convenient, the cutter bears smaller cutting load, the loss of the milling machine is reduced, and the application range of the milling machine is expanded.

Description

Novel machining tool without regrinding

Technical Field

The utility model belongs to the technical field of machining special tool, more specifically say, especially, relate to a novel processing cutter of not grinding again.

Background

When the small-size opening or narrow groove of machining, adopt end mill milling process on the milling machine generally, end mill is the integral cutter of stock structure, the cutting edge of cutter includes end sword and along a plurality of week sword of axial spiral distribution, milling process, end sword and week sword participate in the cutting metal simultaneously, the cutter bears huge load, when just beginning to cut into or feed the in-process of milling, because the cutting edge collide with or the wearing and tearing are serious and need repeated whetting a knife, machining efficiency has been reduced, manufacturing cost has been increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel processing cutter of not regrinding aims at solving traditional end mill and when carrying out milling process small-size opening or slot, and the blade part is fragile easily, and need wholly change cutter arbor, complex operation's problem after damaging.

In order to achieve the above object, the utility model adopts the following technical scheme: there is provided a novel throw-away machining tool comprising:

the cutter bar is used for being clamped in a cutter mounting hole of the milling machine spindle, and the lower part of the cutter bar is provided with a abdicating groove;

the blade through connecting piece demountable installation in on the cutter arbor, and be located the inslot of stepping down, the groove of stepping down is used for providing dismantlement the space of stepping down of blade, the blade is provided with the protrusion the cutting edge of cutter arbor lateral wall.

Furthermore, the abdicating groove is an arc-shaped groove, and the opening faces to the lower end of the cutter bar.

Furthermore, a step platform is arranged at the joint of the abdicating groove and the cutter bar.

Further, the blade is of a triangular or rectangular structure, and the cutting edge is arranged at the tip end of the blade.

Further, the blade is provided with a tip arc transition of the cutting edge.

Further, the lower part of cutter arbor is provided with and is used for the dress card the mounting groove of blade, the blade passes through connecting piece demountable installation in the mounting groove.

Further, the connecting piece is a screw, the screw is installed on one side of the installation groove, and a nut of the screw compresses the blade.

Furthermore, a reinforcing sleeve is arranged at the lower part of the cutter bar, and the abdicating groove is formed in the reinforcing sleeve.

Further, the upper end circumference of cutter arbor is provided with the lead angle.

Further, the blade is an alloy material member.

The utility model provides a novel processing cutter without refacing's beneficial effect lies in: compared with the prior art, the novel non-regrinding processing cutter of the utility model adopts the cutter bar to install the blade to form the cutting cutter, compared with the traditional end mill with an integrated structure, the cutter bar can be reused, and the cutting cutter can be reused only by replacing a new blade after the blade is damaged, thereby being easy to cut; the blade is installed in the cutter arbor groove of stepping down to compress tightly the effect with the connecting piece implementation, guaranteed the firm connection and the easy to assemble of blade and cutter arbor. The novel non-regrinding machining cutter can also be arranged on a milling machine for use, and is simple and convenient to operate. The cutter adopts the cutting edge protruding out of the side wall of the cutter bar, so that the cutting edge can conveniently cut into a workpiece when in use, the cutter bears smaller cutting load, higher feeding speed is allowed, loss of the milling machine can be reduced, and the application range of the milling machine is expanded.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a novel throwaway cutting tool according to an embodiment of the present invention;

fig. 2 is a partially enlarged structural view taken along the direction a of fig. 1.

In the figure: 100. a cutter bar; 101. a first stage; 102. a second stage; 103. a third stage; 104. a fourth stage; 105. a stair step; 106. an inner side edge; 107. an outer side edge; 200. a first ring groove; 300. a second ring groove; 400. a connecting member; 500. a blade; 600. a yielding groove.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, a novel throwaway cutting tool according to the present invention will now be described. Novel throw away machining cutter includes: a tool holder 100 and a blade 500; the cutter bar 100 is used for being clamped in a cutter mounting hole of a milling machine spindle, and the lower end part of the cutter bar is provided with a abdicating groove 600; the blade 500 is detachably mounted on the cutter bar 100 through the connecting member 400 and is located in the abdicating groove 600, the abdicating groove 600 is used for providing an abdicating space for detaching the blade 500, and the blade 500 is provided with a cutting edge part protruding out of the side wall of the cutter bar 100.

The utility model provides a novel processing cutter without refacing's beneficial effect lies in: compared with the prior art, the novel non-regrinding processing cutter of the utility model adopts the cutter bar 100 to install the blade 500 to form the cutting cutter, compared with the traditional end mill with an integrated structure, the cutter bar 100 can be reused, and the cutting cutter is easy to cut as long as the blade 500 is replaced with a new blade 500 after being damaged; the blade 500 is installed in the cutter bar 100 receding groove 600, and the connecting piece 400 is used for compressing, so that the blade 500 and the cutter bar 100 are firmly connected and are convenient to install. The novel non-regrinding machining cutter can also be arranged on a milling machine for use, and is simple and convenient to operate. The tool employs a cutting edge that protrudes from the side wall of the tool holder 100. When the milling machine is used, the cutting edge can conveniently cut into a workpiece, the cutter bears smaller cutting load, higher feeding speed is allowed, the loss of the milling machine can be reduced, and the application range of the milling machine is expanded.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1-2, in which the abdicating groove 600 is an arc-shaped groove with an opening facing downward the lower end of the cutter bar 100. The abdicating groove 600 on the cutter bar 100 is processed into an arc-shaped groove, which improves the feasibility of design and processing, provides an operation space for disassembling and installing the blade 500, and the opening of the arc-shaped groove faces to the lower end of the cutter bar 100, thereby playing a role in optimizing the whole stress structure of the cutter and improving the durability.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1-2, a step 105 is disposed at a joint of the abdicating groove 600 and the tool bar 100. On one hand, the step platform 105 is helpful for machining the abdicating groove 600 for installing the blade 500 and installing and clamping the blade 500 on the cutter bar 100 in a layered mode; on the other hand, the structure that a plurality of step platforms 105 can be selectively arranged is more beneficial to optimizing the stress state of the abdicating groove 600 of the cutter bar 100, and the bearing capacity of the cutter bar 100 is improved.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 2, the blade 500 is a triangular or rectangular structure, and the cutting edge is disposed at the tip of the blade 500. When the cutting insert 500 is used, the triangular indexable alloy cutting insert 500 is selected as the cutting insert 500, and two side edges of the cutting insert 500 are completely clamped in the angle grooves, so that the loosening of the cutting insert 500 can be effectively prevented, and the firm clamping of the cutting insert 500 is ensured; the blade 500 can be reused after the angle is changed, so that the use cost of the blade 500 is reduced; the novel non-regrinding machining cutter adopts the cutting edge with the tip, so that the cutting force can be greatly reduced, and the service lives of the blade 500 and the cutter are prolonged as much as possible; allows higher feed rates and reduces wear on the milling machine, extending the range of use of the milling machine. On the contrary, the conventional vertical milling cutter adopts the end edge and the peripheral edge to participate in the cutting process, the blade 500 and the cutter bar 100 bear huge axial, circumferential and radial forces, and the lower end part of the cutter participating in the cutting is a stressed part, so that the whole conventional vertical milling cutter is extremely easy to damage, higher feeding speed cannot be realized, and the processing efficiency is not high.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 2, the blade 500 is provided with a tip arc transition of the cutting edge. When cutting metal, the tip cutting edge of the arc-shaped blade 500 is tangent to the upper molding surface of the processed part, so that the cutting is easy, and the processing quality is improved.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1-2, a mounting groove for mounting the blade 500 is provided at the lower portion of the tool bar 100, and the blade 500 is detachably mounted in the mounting groove through the connecting member 400. The shape of the optional mounting groove is the same as that of the blade 500, so that the blade 500 is convenient to mount, the stability in the milling process can be ensured, and the processing quality is ensured.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 2, wherein the connecting member 400 is a screw, the screw is installed on one side of the mounting groove, and the nut of the screw compresses the blade 500. The blade 500 is fixedly connected to the cutter bar 100 by screws, and the screws are positioned on one side of the mounting groove, so that the damage to the structures of the blade 500 and the mounting groove is avoided, the corresponding bearing capacity of the blade 500 and the mounting groove is improved, and the cutting performance and the durability of the cutter are conveniently exerted.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, a reinforcement sleeve is disposed on the lower portion of the cutter bar 100, and the abdicating groove 600 is disposed on the reinforcement sleeve. The reinforcing sleeve contributes to the bearing strength of the cutter bar 100 where the insert 500 is mounted, and improves the durability of the cutter.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, a guide angle is axially disposed at the upper end of the tool bar 100. The installation of the novel processing cutter of not refacing of being convenient for this application, and the dress card is firm.

As a specific implementation of the embodiment of the present invention, please refer to fig. 1, in which the blade 500 is an alloy member. When the blade 500 is used, the easy cutting performance of the blade made of the alloy material for processing parts is ensured, and the durability is improved.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 2, the mounting groove is provided with an inner side 106 and an outer side 107 coinciding with two side edges of the blade 500, and an included angle θ between the outer side 107 and the lower end surface of the cutter bar 100 is 20 ° or more and 60 ° or less. The cutter bar 100 is reasonably provided with the blades 500 at the mounting angle, so that the optimal cutting angle of the cutting edge is obtained, the optimal cutting effect of the cutter is ensured, and the service life is prolonged.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1-2, in which the axis of the tool bar 100 is coplanar with the bottom surface of the abdicating groove 600. In the milling process, the top surface of the insert 500 is coplanar with the bottom surface of the abdicating groove 600, and the cutting edge is coplanar with the axis of the cutter bar 100, so that metal can be conveniently cut, and the quality of a milling plane is ensured.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, the tool bar 100 is sequentially provided with a first section 101, a second section 102, a third section 103 and a fourth section 104 from top to bottom, a first ring groove 200 is provided between the first section 101 and the second section 102, and a second ring groove 300 is provided between the second section 102 and the third section 103; the fourth section 104 is smaller in diameter than the rest of the tool holder 100; the third section 103 has the largest diameter and the blade 500 is mounted on the fourth section 104. When the tool bar 100 is used, the first section 101 and the second section 102 on the tool bar 100 are inserted into and clamped on a milling machine and are matched with the first ring groove 200 and the second ring groove 300, so that the position of a clamping milling machine can be conveniently judged, and on one hand, the phenomenon that clamping is not firm due to too short clamping length along the axial direction of the tool bar 100 is avoided; on the other hand, the first segment 101 and the second segment 102 can exert better guiding function, and are helpful for forming good posture keeping between the novel notch cutter and the cut part of the machined part. The first ring groove 200 or the second ring groove 300 serves to restrict the occurrence of axial play. In addition, the abdicating groove 600 for installing the blade 500 is arranged on the fourth section 104 and the third section 103, and the bearing capacity of the novel throwaway machining tool can be greatly increased by virtue of the largest third section 103, the whole or partial quenching treatment of the cutter bar 100 can be selected, and the bearing capacity and the impact resistance can be further improved. Compared with the traditional end mill, the novel non-regrinding machining tool has very high advantages in the aspects of high-speed cut-in of workpieces and high feeding, and is favorable for improving the machining efficiency. The second ring groove 300 may be selected to have an axial dimension greater than the axial dimension of the first ring groove 200.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1, the third section 103 is provided with a transition fillet with the joint surface of the second annular groove 300, and the other end of the third section 103 is provided with a chamfer. The junction surface of the third section 103 and the second annular groove 300 is provided with a transition fillet, and the third section 103 and the fourth section 104 are in chamfer transition connection, so that the problem that stress concentration in the cutting process affects the durability of the novel gap cutter is avoided, particularly, the outer diameter of the third section 103 is the largest, the impact resistance of the cutter can be greatly improved, the maximum feeding speed of the cutter is further improved, and the improvement of the machining efficiency is facilitated.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Novel machining cutter without refacing, its characterized in that includes:

2. The novel throw away machining tool of claim 1, wherein: the abdicating groove is an arc-shaped groove, and the opening faces to the lower end of the cutter bar.

3. The novel throw away machining tool of claim 2, wherein: and a step platform is arranged at the joint of the abdicating groove and the cutter bar.

4. The novel throw away machining tool of claim 1, wherein: the blade is a triangular or rectangular structure, and the cutting edge is arranged at the tip end of the blade.

5. The novel throw away machining tool of claim 4, wherein: the blade is provided with a tip arc transition of the cutting edge.

6. The novel throwaway machining tool according to any one of claims 1 to 5, wherein: the lower part of cutter arbor is provided with and is used for the dress card the mounting groove of blade, the blade passes through connecting piece demountable installation in the mounting groove.

7. The novel throw away machining tool of claim 6, wherein: the connecting piece is a screw, the screw is installed on one side of the mounting groove, and a nut of the screw compresses the blade.

8. The novel throw away machining tool of claim 1, wherein: the lower part of the cutter bar is provided with a reinforcing sleeve, and the abdicating groove is arranged on the reinforcing sleeve.

9. The novel throw away machining tool of claim 1, wherein: and a guide angle is circumferentially arranged at the upper end of the cutter bar.

10. The novel throw away machining tool of claim 1, wherein: the blade is an alloy material component.