CN211540117U

CN211540117U - Rolling cutter and machine tool

Info

Publication number: CN211540117U
Application number: CN201921596804.7U
Authority: CN
Inventors: 艾海风; 李树云; 李成水; 赵凯
Original assignee: Gaobuneng Shandong Nanotechnology Co Ltd
Current assignee: Gaobuneng Shandong Nanotechnology Co Ltd
Priority date: 2019-09-24
Filing date: 2019-09-24
Publication date: 2020-09-22
Anticipated expiration: 2029-09-24

Abstract

The invention relates to a rolling cutter and a machine tool. The cutter bar is connected with the cutter holder through a connecting seat; the connecting seat with leave the clearance between the cutter arbor, add man-hour, roll extrusion cutter blade holder part can receive the work piece to the equal reaction force of blade holder part when exerting pressure to the work piece, blade holder part gives the work piece through the partial effect of tool bit to the extrusion force, blade holder part receives the promotion of reaction force, the cutter arbor under the effect of reaction force, there is the clearance between the blade holder, extrude metal surface convex part to other positions under the extrusion force effect, elastic displacement takes place to the cutter arbor side for preventing pressure interference cutter holder simultaneously, improve the smooth finish of metal surface.

Description

Rolling cutter and machine tool

Technical Field

The invention relates to the technical field of metal processing, in particular to a rolling cutter and application of a machine tool.

Background

The rolling cutter utilizes the cold plasticity characteristic of a metal workpiece at a normal temperature state, and applies certain pressure to the workpiece to enable the surface metal of the workpiece to generate plastic deformation so as to prevent: 1. the rolling head and a workpiece have rigid friction resistance, so that vibration lines are generated on the surface of the workpiece; 2. the rolling cutter is in contact interference with a workpiece to cause a scraping phenomenon on the surface of the workpiece, the original dimensional tolerance of the workpiece is damaged, and the workpiece is scrapped;

the existing rolling cutter mostly provides elasticity for the cutter holder through hydraulic pressure, air pressure and a spring, wherein the spring structural type rolling cutter is widely applied, generally comprises a cylinder body, a piston and a spring structural mode, and has strict requirements on the precision of fit tolerance: if the fit tolerance precision is too small, the tolerance gap is small, the friction heat generated in the work can cause the rolling cutter body to thermally expand, so that the cutter body cannot slide flexibly in the cutter groove, and the rolling process belongs to ultra-precision machining and generally belongs to nano-scale machining, so that the machining effect of a workpiece cannot be influenced even if a cooling mode is adopted; if the matching tolerance precision is too large, the problem of thermal expansion of the cutter body is solved, the matching clearance between the cylinder body and the piston is vibrated to be enlarged due to the swinging of a processed workpiece and the lack of machine tool rigidity in the working process, the processing precision and the processing effect are seriously influenced, the rejection rate of the workpiece is obviously increased, and the elasticity is unstable;

other methods, such as hydraulic and pneumatic rolling cutters, have complex structure and poor stability, and hydraulic and pneumatic rolling cutters have large volume, poor rigidity, easy leakage and low safety in use, and are almost rarely used, so that a rolling cutter with high safety and stable elasticity is urgently needed.

Disclosure of Invention

In order to solve the above-mentioned technical problems, an object of the present invention is to provide a rolling cutter and a machine tool.

According to one aspect of the present invention, there is provided a rolling knife comprising: a cutter bar and a cutter seat;

the cutter bar is connected with the cutter holder through a connecting seat;

and a gap is reserved between the connecting seat and the cutter bar and/or the cutter holder so that the cutter holder can generate elastic displacement according to different bearing pressures.

Compared with the prior art, the invention has the following beneficial effects: the cutter bar is connected with the cutter holder through a connecting seat; a gap is reserved between the connecting seat and the cutter bar, when in processing, the rolling cutter holder part can bear the equal reaction force of the workpiece to the cutter holder part while exerting pressure on the workpiece, the cutter holder 2 gives the extrusion force to the workpiece through the cutter head 21, the cutter holder part is pushed by the reaction force, a gap is reserved between the cutter bar and the cutter holder under the action of the reaction force, the metal surface convex part is extruded to other parts under the action of the extrusion force, meanwhile, in order to prevent the pressure interference cutter holder from elastically displacing towards the cutter bar side, the smoothness of the metal surface is improved, when the cutter holder moves to the concave part of the metal surface, the rebound occurs when the cutter holder bears the reaction force in hours, the generation of workpiece apparent vibration lines is prevented in the rolling process, the convex-concave tolerance of the workpiece surface is kept or reduced, the finishing effect of the workpiece is enhanced, and a spring device and a hydraulic device, The air pressure device has the characteristics of good stability, high precision, good safety, simple structure and the like.

Further, the cutter bar and the cutter holder are integrally formed.

The beneficial effects of adopting above-mentioned further technical characteristics lie in, on the one hand simple structure can increase the life of roll extrusion sword, and on the other hand integrated into one piece can reduce blade holder and cutter arbor spare because of being connected the error that produces, has solved because of clearance fit between the cutter arbor blade holder, and the rigidity effect is poor and has appeared the horizontal hunting and influence the machining precision man-hour, can improve the stability of elasticity, makes the tool bit keep or reduce the convex-concave tolerance on work piece surface man-hour.

Further, the gap is arranged along the radial direction of the cutter bar;

the width of the cutter holder is larger than that of the cutter bar, a protrusion is formed on one side of the cutter holder relative to the cutter bar, and the opening direction of the gap faces to or is far away from the protrusion.

The beneficial effect who adopts above-mentioned further technical characteristic lies in that, adds man-hour, the reaction force that the blade holder received generally distributes along the cutter arbor axial, and bellied direction is the direction of motion of the relative workpiece surface of blade holder generally, and the radial clearance along the direction of motion can be favorable to the blade holder to the cutter arbor side to take place elastic displacement.

Further, the connecting seat includes the base member, the tip of base member one side sets up first connecting seat, leave first clearance between cutter arbor, first connecting seat, the blade holder.

The beneficial effect who adopts above-mentioned further technical characteristic lies in that, one side and the blade holder of connecting seat are connected, and the opposite side passes through the connecting seat to be connected with the cutter arbor and forms the clearance, can conveniently process, reduction in manufacturing cost.

Furthermore, a second connecting seat is arranged on the other side of the base body, and a second gap is reserved among the cutter bar, the second connecting seat and the cutter holder.

The beneficial effect of adopting above-mentioned further technical characteristics lies in, first clearance, second clearance cooperate, can increase buffering effect

Furthermore, the first gap and the second gap are centrosymmetric.

Adopt above-mentioned further technical characteristic's beneficial effect to lie in, the both sides of base are connected through connecting seat and cutter arbor, blade holder respectively and are formed two clearances that become centrosymmetric, can further increase buffering effect.

Furthermore, a buffer groove is arranged at one end of the gap close to the first connecting seat and/or the second connecting seat, and the cross section of the buffer groove is of a semicircular structure, a circular structure or an arched structure.

The tool post has the advantages that after the tool post is subjected to acting force, the tool post can deviate towards the side of the tool post due to the reacting force, and the buffer groove can increase the deviation space and increase the elastic effect; for the arch structure, when the arch is pressed, the force is transmitted to the adjacent part to abut against the arch foot, so that the force emitted by the arch foot can bear larger pressure, and the arch can bear heavier force, thereby being beneficial to prolonging the service life of the rolling knife.

Further, the cutter arbor includes the body and follows the cushion of body axial setting, cushion and body detachable construction.

The tool bar pressing block has the beneficial effects that the tool bar can adapt to tool bar pressing blocks of different models by disassembling and assembling the cushion block.

Further, the connecting seat is made of spring steel.

The beneficial effect who adopts above-mentioned further technical characteristics lies in, spring steel indicates the alloy steel of making all kinds of springs and other elastic element, can increase the hardness and the toughness of connecting seat strong, can effectively prevent to break and the precision that the damage leads to when using is low.

According to another aspect of the invention, there is provided a machine tool comprising a stitching knife as described in any one of the above.

Drawings

Fig. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural view of the present invention;

FIG. 3 is a third schematic structural diagram of the present invention;

FIG. 4 is a schematic view of a connecting socket;

fig. 5 is another structure diagram of the connecting seat.

Reference numerals shown in the drawings: 1-a cutter bar; 2-a tool apron; 21-a cutter head; 3-a connecting seat; 31-a substrate; 32-a first connection seat; 33-a second connection seat; 34. a supporting seat; 4-a buffer tank; 5, cushion blocks; 51-bolt; 6-gap.

Detailed Description

In order to better understand the technical scheme of the invention, the invention is further explained by combining the specific embodiment and the attached drawings of the specification.

Example 1:

the utility model provides a rolling cutter, includes cutter arbor 1, blade holder 2, cutter arbor 1 and blade holder 2 are connected through connecting seat 3, the clearance is along the radial setting of cutter arbor, the width of blade holder is greater than the width of cutter arbor and forms protrudingly at the relative cutter arbor in one side of blade holder, the opening direction in clearance perhaps keeps away from protrudingly, and during processing, the reaction force that the blade holder received generally distributes along the cutter arbor axial, and bellied direction generally is the direction of motion of the relative workpiece surface of blade holder, and the radial clearance along the direction of motion can be favorable to the blade holder to take place elastic displacement to the cutter arbor side. As the alternative, cutter arbor 1, connecting seat 3 integrated into one piece, simple structure on the one hand can increase the life of roll extrusion sword, and the two integrated into one piece of on the other hand has strengthened the rigidity on possessing the elasticity basis, reduces blade holder 2 and cutter arbor 1 and increases the processing effect because of being connected the precision fit error that produces, cutter arbor 1 and connecting seat 3 are prepared by spring steel, and spring steel indicates the alloy steel of making all kinds of springs and other elastic component, increases the stability that cutter arbor 1, blade holder 2 are connected.

In this embodiment, the connecting seat 3 includes a base 31, a first connecting seat 32 is disposed at an end of one side of the base 31, as shown in fig. 4, the connecting member 3 is integrally L-shaped, one side of the base is connected to the tool bar 1, and the other side of the base is connected to the tool apron 2 through the first connecting seat 32, a first gap 6 is left between the tool bar, the first connecting seat, and the tool apron, as a further preferable scheme, a second connecting seat is disposed at the other side of the base, and a second gap 7 is left between the tool bar, the second connecting seat, and the tool apron, at this time, as shown in fig. 5, the connecting member 3 is integrally Z-shaped, which not only improves the buffering capacity compared with one gap 6 at one side, but also enables the connecting seat to deform to generate stronger elastic force; the first gap and the second gap can be centrosymmetric, the widths of the first gap 6 and the second gap 7 are 0.1-5mm, a buffer groove is arranged at one end of the gap close to the first connecting seat and/or the second connecting seat, the cross section of the buffer groove is of a semicircular structure, a circular structure or an arched structure, as a preferable scheme, as shown in fig. 5, in order to conveniently form the buffer groove, the tool apron 2 and the tool bar 1 are provided with a supporting seat 34 matched with the first connecting seat 32 and the second connecting seat 33, the first connecting seat 32, the second connecting seat 33 and the supporting seat 34 are respectively provided with an arc-shaped groove, and the buffer groove 4 is formed after the arc-shaped grooves are buckled; after the tool apron 2 is subjected to acting force, the tool apron 2 can deviate towards the tool bar 1 side due to the reacting force, and the buffer groove can increase the deviation space and increase the elastic effect; for the arch structure, when the arch is pressed, the force is transmitted to the adjacent part to abut against the arch foot to emit force, so that the force born by the arch is heavier, and the service life of the rolling knife is prolonged;

in the embodiment, a gap is reserved between the connecting seat 3 and the cutter bar 1, and when a workpiece is machined, the cutter bar is connected with the cutter holder through the connecting seat; when the rolling cutter holder part applies pressure to the workpiece and is simultaneously subjected to equal reaction force of the workpiece to the holder part, the holder part applies extrusion force to the workpiece through the cutter head part and is pushed by the reaction force, a gap is reserved between the cutter holder and the cutter holder under the action of the reaction force, the metal surface convex part is extruded to other parts under the action of the extrusion force, meanwhile, in order to prevent the pressure interference cutter holder from generating elastic displacement towards the cutter bar side and improve the smoothness of the metal surface, when the cutter holder moves to the concave part of the metal surface, the cutter holder is reduced by the reaction force, the cutter holder rebounds to generate elastic displacement to adapt to the concave-convex unevenness of the metal surface, the effect of preventing the appearance vibration lines of the workpiece in the rolling extrusion process is achieved, and the convex-concave tolerance of the surface of the workpiece is kept or reduced, the polishing effect on the workpiece is enhanced, a spring device, a hydraulic device and a pneumatic device are not needed, the tool apron 2 does not need to be in sliding connection with the tool bar 1, and the polishing device has the advantages of being good in stability, high in precision, good in safety, simple in structure and the like.

The cutter arbor 1 includes the body and follows the cushion 5 of body axial setting, the cushion 5 can be dismantled with the body and be connected, as shown in fig. 3, this embodiment cushion 5 can be dismantled with cutter arbor 1 through bolt 51 and be connected, makes the cutter arbor can adapt to the cutter arbor briquetting of different models through the dismantlement and the installation of cushion.

The rolling cutter is mounted on the machine tool, a tool rest is needed during mounting, and the machine tool provided with the rolling cutter provided by the embodiment is high in safety and stable in elasticity when used for machining a metal workpiece.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the features described above have similar functions to (but are not limited to) those disclosed in this application.

Claims

1. A rolling knife, comprising: a cutter bar and a cutter seat;

the cutter bar is connected with the cutter holder through a connecting seat;

2. The rolling cutter according to claim 1, wherein the connecting seat comprises a base body, a first connecting seat is arranged at one end of the base body, and a first gap is reserved among the cutter bar, the first connecting seat and the cutter seat.

3. The rolling cutter according to claim 2, wherein a second connecting seat is provided on the other side of the base, and a second gap is left between the cutter bar, the second connecting seat and the cutter seat.

4. The stitching knife of claim 3 wherein the first and second gaps are centrosymmetric.

5. The rolling cutter according to claim 3, wherein a buffer groove is formed in one end of the gap adjacent to the first connecting seat and/or the second connecting seat, and the cross section of the buffer groove is in a semicircular structure, a circular structure or an arched structure.

6. The rolling cutter according to claim 1, wherein the cutter bar and the connecting seat are integrally formed.

7. The rolling knife of claim 1 wherein the gap is disposed radially of the knife bar;

8. The rolling knife of claim 1 wherein the knife bar includes a body and a block axially disposed along the body, the block being removably connected to the body.

9. The rolling knife of claim 1 wherein the connecting seat is fabricated from spring steel.

10. A machine tool comprising a stitching knife as claimed in any one of claims 1 to 9.