CN219686172U

CN219686172U - Wire cutting machine

Info

Publication number: CN219686172U
Application number: CN202223573781.2U
Authority: CN
Inventors: 王鹏; 仇健; 张帅; 李贤东; 王海超
Original assignee: Qingdao Gaoce Technology Co Ltd
Current assignee: Qingdao Gaoce Technology Co Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-09-15
Anticipated expiration: 2032-12-30

Abstract

The embodiment of the utility model provides a wire cutting machine, which comprises a cutting assembly, wherein the cutting assembly comprises a cutting panel, a first cutting wheel and a second cutting wheel which are used for winding a cutting wire are arranged on the cutting panel, the cutting wire is wound on the peripheries of the first cutting wheel and the second cutting wheel, and a cutting area is formed between the first cutting wheel and the second cutting wheel; the cutting line and the vertical surface in the cutting area are provided with a first preset inclination angle; the rotary clamping assembly is used for clamping the workpiece and can drive the workpiece to rotate around the axis of the workpiece. The whole machine deformation of the inclined wire mesh inclined lathe bed in the vertical direction is less influenced by gravity, so that the influence of the structural gravity on cutting is reduced, the rigidity of the mechanism is improved, the stability of the mechanism is improved, and the wire bow is more uniform; the silicon rod automatically rotates through the rotary clamping assembly, so that the cutting efficiency of the silicon rod is further improved; the wire contact length of rotary cutting is even, and the atress is even, is favorable to improving the cutting line bow, improves machining precision.

Description

Wire cutting machine

Technical Field

The utility model relates to the technical field of wire cutting, in particular to a wire cutting machine.

Background

The cutting mechanism of the existing loop wire cutting machine comprises two cutting wheels, a tension wheel and a transition wheel, wherein the two cutting wheels, the transition wheel and the tension wheel are placed at four points on the loop wire cutting machine, and an annular cutting wire is wound on the periphery of each wheel to cut high-hardness and brittle materials to be cut. The two cutting wheels are horizontally or vertically arranged, so that the direction of a diamond wire of a loop line between the cutting wheels is horizontal or vertical, the two cutting wheels are connected with a motor, the annular cutting wheels are driven to rotate through the rotary motion of the motor, and the cutting wheels connected with the motor drag the diamond wire to move at a high speed to cut the monocrystalline silicon rod; the transition wheel is positioned at one side of the cutting wheel and mainly plays a role in guiding; the tension wheel is positioned on one side of the cutting wheel or cutting wheel to provide tension to the annular diamond wire. The cutting direction of the annular diamond wire to the silicon rod is horizontal or vertical. The annular diamond wire with the arrangement mode has poor liquid carrying capacity and poor cutting chip discharging effect.

Disclosure of Invention

The embodiment of the utility model provides a wire cutting machine, which aims to solve the problems that the existing diamond wire has large cutting resultant force, poor liquid carrying capacity and poor cutting chip discharging effect when the cutting direction of a silicon rod is horizontal or vertical.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

a wire cutting machine, comprising: the cutting assembly comprises a cutting panel, a first cutting wheel and a second cutting wheel which are used for winding a cutting line are arranged on the cutting panel, the cutting line is wound on the peripheries of the first cutting wheel and the second cutting wheel, and a cutting area is formed between the first cutting wheel and the second cutting wheel; the cutting line and the vertical surface in the cutting area are provided with a first preset inclination angle;

the rotary clamping assembly is used for clamping the workpiece and can drive the workpiece to rotate around the axis of the workpiece; the rotating axis of the rotating clamping assembly is perpendicular to the plane where the cutting line is located, and the rotating clamping assembly and the cutting assembly can move relatively, so that the cutting line cuts a workpiece.

Optionally, the method further comprises:

the base is provided with a first inclined mounting surface, and a second preset inclination angle is formed between the first inclined mounting surface and the horizontal plane; the cutting assembly and the rotary clamping assembly are both located on the first angled mounting surface.

Optionally, the rotary clamping assembly comprises:

the mounting seat is provided with a mounting inner cavity;

the rotary driving piece is positioned in the installation cavity, and one end of the rotary driving piece protrudes out of the side wall of the installation seat;

and the clamp is used for clamping the workpiece and is fixed at one end of the rotary driving piece protruding out of the mounting seat.

Optionally, the mounting base has an inclined surface, and in an inclined direction of the first inclined mounting surface, the inclined surface is located on a downward side of the mounting base.

Optionally, the method further comprises:

the sliding driving device is positioned on the base and is connected with the cutting assembly and/or the rotary clamping assembly, so that the rotary clamping assembly and the cutting assembly relatively move to drive the cutting line to cut the workpiece.

Optionally, the slip driving device includes:

a first slip drive assembly located on the first inclined mounting surface and extending in an inclined direction of the first inclined mounting surface; the first sliding driving assembly is connected with the cutting assembly to drive the cutting assembly to move along the inclined direction of the first inclined mounting surface;

the second sliding driving assembly is positioned on the first inclined mounting surface and is perpendicular to the first sliding driving assembly; the second sliding driving assembly is connected with the rotary clamping assembly to drive the rotary clamping assembly to move towards the direction close to or far away from the cutting assembly.

Optionally, the first slip drive assembly comprises:

the first sliding power piece is positioned on the first inclined mounting surface;

the first sliding driving piece is respectively connected with the first sliding power piece and the cutting assembly; the first sliding power piece drives the first sliding driving piece to act so as to drive the cutting assembly to slide;

and/or a first sliding guide piece is respectively connected with the cutting assembly and the first inclined mounting surface and guides the movement of the cutting assembly along the first inclined surface.

Optionally, the second slip drive assembly comprises:

the second sliding power piece is positioned on the first inclined mounting surface;

the second sliding driving piece is respectively connected with the second sliding power piece and the rotary clamping assembly; the second sliding power piece drives the second sliding driving piece to act so as to drive the rotary clamping assembly to slide;

and/or a second sliding guide member is respectively connected with the rotary clamping assembly and the first inclined mounting surface and guides the sliding of the rotary clamping assembly.

Optionally, the method further comprises:

the tension wheel is rotationally connected to the cutting panel and is positioned at one side far away from the cutting line;

and/or a transition wheel is rotatably connected to the cutting panel and is used for guiding the cutting line.

Optionally, the first cutting wheel, the second cutting wheel, one tension wheel and one transition wheel form four vertexes of a quadrilateral, and the cutting lines are respectively wound on the peripheries of the first cutting wheel, the second cutting wheel, the tension wheel and the transition wheel to form an annular line.

Optionally, the first preset inclination angle is 30-60 degrees.

The present utility model provides a wire cutting machine, comprising: the cutting assembly comprises a cutting panel, a first cutting wheel, a second cutting wheel and a cutting line, wherein the cutting line is wound in the outer parts Zhou Luncao of the first cutting wheel and the second cutting wheel, and a cutting area is formed between the first cutting wheel and the second cutting wheel; the cutting line and the vertical surface in the cutting area are provided with a first preset inclination angle; the rotary clamping assembly is used for clamping the workpiece and can drive the workpiece to rotate around the axis of the workpiece; the rotation axis of the rotary clamping assembly is perpendicular to the plane of the cutting line, and the rotary clamping assembly and the cutting assembly can move relatively, so that the cutting line cuts the workpiece.

Compared with the prior art, the wire cutting machine provided by the embodiment of the utility model has the following technical effects:

firstly, the whole machine deformation of the oblique line net oblique lathe bed in the vertical direction is less influenced by gravity, which is beneficial to reducing the influence of structural gravity on cutting and improving the rigidity of the mechanism, thereby being beneficial to improving the stability of the mechanism and enabling the line bow to be more uniform; the direction of the screw rod of the horizontal lathe bed in the prior art is horizontally arranged, and the direction of the screw rod which plays a feeding role in the oblique lathe bed oblique line net cutting machine is obliquely arranged, so that the gravity component force acts on the axial direction of the screw rod, and the reverse gap in transmission can be greatly reduced; under the action of gravity component force in the inclined lathe bed structure, the cuttings and cutting fluid can be automatically discharged, so that the cuttings and the cutting fluid are prevented from accumulating on the surface of equipment, and the maintenance of the equipment is facilitated; compared with a flat wire mesh structure, the inclined wire mesh has stronger liquid carrying capacity, better lubrication and cooling effects can be obtained by the cutting wire in the cutting area, and better processing surface quality can be obtained; in the inclined wire mesh inclined lathe bed structure, the lead screw guide rail is obliquely arranged, so that the guide rail travel can be longer and the processable silicon rod size is larger under the condition of the same occupied area;

second, compared with the processing mode that the silicon rod is fixed and not rotated in the prior art, the silicon rod automatically rotates through the rotary clamping assembly, so that the cutting efficiency of the silicon rod is further improved; meanwhile, compared with the change of the contact length of the cutting line and the workpiece when the round silicon rod is cut directly, the contact length of the cutting line in rotary cutting is uniform, the stress is uniform, the cutting line bow is improved, and the machining precision is improved; the point contact processing mode of rotary processing optimizes the material removal effect of the cutting contact area, and can reduce the cutting force of unit materials and improve the processing precision; the rotary motion of the silicon rod can realize finishing processing of the abrasive particles on the cut surface by utilizing the repeated contact of the cut surface and the cutting line; and the cutting line and the silicon rod are in a point contact mode instantaneously, the actual contact length of the cutting line and the silicon rod is half chord length, the contact length is greatly reduced compared with the traditional full chord length, compared with the traditional cutting line which needs to pass through the section of the whole silicon rod, the cutting of the silicon rod can be realized by cutting the rotary cutting diamond line to the center of the silicon rod in theory, the cutting time is half of that of the traditional mode in theory, the cutting time is shortened, and the cutting efficiency is further improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a schematic diagram of an axial measurement structure of a wire cutting machine according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a cutting assembly according to an embodiment of the present utility model;

FIG. 3 is a schematic structural view of a rotary clamping assembly according to an embodiment of the present utility model;

FIG. 4 is a schematic side elevational view of the structure of FIG. 1;

FIG. 5 is a schematic view of cutting a workpiece while rotating according to an embodiment of the present utility model;

FIG. 6 is a schematic cross-sectional view of a silicon rod and diamond wire cut according to an embodiment of the present utility model;

FIG. 7 is a schematic diagram illustrating a force analysis of a diagonal cut provided by an embodiment of the present utility model;

fig. 8 is a schematic diagram of a cutting structure of a wire cutting machine according to an embodiment of the present utility model.

The figures are marked as follows:

a cutting assembly 10, a rotary clamping assembly 20, a first slip drive assembly 30, a second slip drive assembly 40, a base 50, a first angled mounting surface 51;

cutting panel 101, tension wheel 102, transition wheel 103, first cutting wheel 104, second cutting wheel 105, cutting line 106;

a clamp 201, a mounting base 203, and a rotary drive 202.

Detailed Description

The embodiment of the utility model discloses a wire cutting machine, which aims to solve the problems that the existing diamond wire has large cutting resultant force, poor liquid carrying capacity and poor cutting chip discharging effect when the cutting direction of a silicon rod is horizontal or vertical.

In order to make the technical solutions and advantages of the embodiments of the present utility model more apparent, the following detailed description of exemplary embodiments of the present utility model is provided in conjunction with the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present utility model and not exhaustive of all embodiments. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

Referring to fig. 1-2, fig. 1 is a schematic diagram of an axial measurement structure of a wire cutting machine according to an embodiment of the present utility model; fig. 2 is a schematic structural view of a cutting assembly 10 according to an embodiment of the present utility model; in one embodiment, the present utility model provides a wire cutting machine comprising a cutting assembly 10 and a rotary clamping assembly 20. As shown in fig. 2, wherein the cutting assembly 10 comprises a cutting panel 101, a first cutting wheel 104, a second cutting wheel 105 and a cutting line 106. The first cutting wheel 104 and the second cutting wheel 105 are rotatably connected to the cutting panel 101, respectively, to form a cutting zone. One or both of the first cutting wheel 104 and the second cutting wheel 105 may be connected to a motor, respectively, to power the cutting. The first cutting wheel 104 and the second cutting wheel 105 are preferably identical in structure, the peripheral wheel grooves of the first cutting wheel 104 and the second cutting wheel 105 are provided with wire winding grooves, the cutting wire 106 is wound on the peripheral wheel grooves of the first cutting wheel 104 and the second cutting wheel 105, and the cutting wire 106 in the cutting area is provided with a first preset inclined angle with the vertical surface. The arrangement is that the cutting line 106 in the cutting area is inclined by a certain angle, the cutting wheel is driven to rotate through the rotary motion of the motor, and the cutting wheel connected with the motor drags the cutting line 106 to move at a high speed to cut the silicon rod. Compared with the arrangement mode that the cutting lines 106 are arranged vertically in the prior art, the inclined wire net can automatically discharge chips under the action of gravity component force, so that the chip removal effect is better, and the maintenance of equipment is facilitated; compared with the prior art that the cutting line 106 is horizontally arranged, the liquid carrying capacity of the cutting line is stronger, and the cutting line 106 can achieve better lubrication and cooling effects. Preferably, the first preset inclination angle is 30 ° to 60 °.

Wherein, the wire cutting machine further includes a spraying device, and the spraying devices are preferably disposed below the first cutting wheel 104 and above the second cutting wheel 105, respectively, and it is understood that the spraying device is fixed on the cutting panel 101, and the cutting line 106 is obliquely disposed, so that the cutting fluid sprayed by the spraying device can better move along the cutting line 106, and the cutting line 106 can obtain better lubrication and cooling effects.

By adopting the cutting assembly 10, the whole machine deformation of the oblique-line net oblique-line lathe bed in the vertical direction is less influenced by gravity, so that the influence of structural gravity on cutting is reduced, the rigidity of the mechanism is improved, the stability of the mechanism is improved, and the wire bow is more uniform; the direction of the screw rod of the horizontal lathe bed in the prior art is horizontally arranged, and the direction of the screw rod which plays a feeding role in the oblique lathe bed oblique line net cutting machine is obliquely arranged, so that the gravity component force acts on the axial direction of the screw rod, and the reverse gap in transmission can be greatly reduced; under the action of gravity component force in the inclined lathe bed structure, the cuttings and cutting fluid can be automatically discharged, so that the cuttings and the cutting fluid are prevented from accumulating on the surface of equipment, and the maintenance of the equipment is facilitated; compared with a flat wire mesh structure, the inclined wire mesh has stronger liquid carrying capacity, better lubrication and cooling effects can be obtained by the cutting wire 106 in a cutting area, and better processing surface quality can be obtained; in the inclined wire mesh inclined lathe bed structure, the lead screw guide rail is obliquely arranged, so that the guide rail travel can be longer and the processable silicon rod size is larger under the condition of the same occupied area.

Fig. 3 is a schematic structural diagram of a rotary clamping assembly according to an embodiment of the utility model. In one embodiment, the rotary clamping assembly 20 is capable of clamping a workpiece and driving the workpiece to rotate around its own axis, and the rotation axis of the rotary clamping assembly 20 is perpendicular to the plane of the cutting line 106, it being understood that the rotation axis of the rotary clamping assembly 20 may be considered to coincide with the own axis of the workpiece, and the plane of the cutting line 106 should be considered to be a plane formed by the cutting line 106 sleeved on the outer circumferences of the first cutting wheel 104 and the second cutting wheel 105; generally, the cutting assembly 10 may further include a transition wheel 103 and a tension wheel 102, where the first cutting wheel 104, the second cutting wheel 105, one tension wheel 102 and one transition wheel 103 form four vertices of a quadrilateral, and the plane of the cutting line 106 should be a plane in which an annular line sleeved on the peripheries of the first cutting wheel 104, the second cutting wheel 105, the tension wheel 102 and the transition wheel 103 is located; in other embodiments, the plane of the cutting line 106 may be considered parallel to the plane of the cutting panel 101 to ensure vertical feed between the cutting line 106 and the rotary clamping assembly 20, it being understood that relative movement between the rotary clamping assembly 20 and the cutting assembly 10 is possible to effect the cutting of the workpiece by the cutting line 106.

Compared with the processing mode that the silicon rod is fixed and not rotated in the prior art, the silicon rod automatically rotates through the rotary clamping assembly 20, so that the stage efficiency of the silicon rod is further improved; meanwhile, compared with the change of the contact length of the cutting line 106 and the workpiece when the round silicon rod is cut directly, the rotary cutting line has uniform contact length and uniform stress, and is beneficial to improving the line bow and the machining precision; the point contact processing mode of rotary processing optimizes the material removal effect of the cutting contact area, and can reduce the cutting force of unit materials and improve the processing precision; the rotary motion of the silicon rod can realize the finishing processing of the abrasive particles on the cut surface by utilizing the multiple contact of the cut surface and the cutting line 106; fig. 5 is a schematic view of cutting a workpiece while rotating according to an embodiment of the present utility model, as shown in fig. 5 and 6; FIG. 6 is a schematic cross-sectional view of a silicon rod and diamond wire cut according to an embodiment of the present utility model; from the actual dt of unit correspondence buddha's warrior attendant line feed ap, the actual contact length of buddha's warrior attendant line and silicon stick is half chord length in this time, and cutting line 106 is the point contact form with the silicon stick is instantaneous, and contact length compares traditional full chord length and reduces by a wide margin, compares with traditional mode cutting line 106 needs to pass whole silicon stick cross-section, and rotatory cutting buddha's warrior attendant line only need cut to cross the silicon stick center in theory and can realize the cut-off of silicon stick, and cutting time is half in theory only traditional mode, shortens cutting time, further improves cutting efficiency.

The rotary cutting is also different in cutting process because the contact length is much smaller than that of the conventional straight cutting mode. Specifically, in the conventional manner, since the contact length of the diamond wire from cutting into the silicon rod to cutting out the silicon rod varies greatly, a guiding incision is cut at a lower speed in the cutting-in area, that is, the diamond wire is guided and positioned, and then the cutting-in can be performed at a higher feeding speed due to the small contact length; in the central area, when approaching a section of the maximum diameter of the silicon rod in the central area, the wire bow approaches the maximum and has certain speed reduction; in the cutting-out area, the speed is increased after passing through the central maximum contact area, and the speed is continuously reduced when reaching the cutting-off position, so that the whole cutting process is completed.

The rotary cutting is fed at a stable feeding speed in the cutting-in area and the central area, the feeding speed is not so severely changed in the whole course, but is reduced in speed near the middle cutting-off position so as to facilitate the fracture.

When the oblique lathe bed rotates and cuts in the cut-in area, the oblique line is fed by oblique line to carry out rotary cutting, oblique line contacts chord length, the cut-in area and the center area are fed at a stable speed, the rotary cutting and taking-out contact length is small and uniform, and the oblique line component force can balance gravity; in the cutting area, the cutting process is more stable and the stress is more uniform.

Specifically, the cutting line 106 located in the cutting zone is disposed obliquely downward. Fig. 4, 7 and 8 show a schematic diagram of stress analysis of diagonal cutting according to an embodiment of the present utility model; fig. 8 is a schematic view of a cutting structure of a wire cutting machine according to an embodiment of the present utility model; the first cutting wheel 104 is located above in the vertical direction, the second cutting wheel 105 is located below the first cutting wheel 104, the second cutting wheel 105 is taken as an origin, the horizontal direction is taken as an X axis, and a rectangular coordinate system is established for the Y axis in the direction perpendicular to the paper surface, so that the first cutting wheel 104 and the second cutting wheel are known; the included angle between the cutting line 106 between the cutting wheels and the X axis is larger than 90 degrees, and the workpiece is cut in reverse time; the first predetermined inclination angle is an angle between the cutting line 106 in the cutting area and the Y-axis.

It will be appreciated that for better entraining, the direction of movement of the diamond wire is generally set up from top to bottom so that cutting fluid can be carried by the movement of the diamond wire onto the cutting zone within the wire gap. And in order to obtain a better driving effect, the optimal position of the driving wheel of the diamond wire is on the cutting wheel near the workpiece and in front of the linear motion, and the diamond wire is pulled to move by the driving motor, so that, as shown in fig. 8, the optimal position of the motor is on the driving wheel below the silicon rod cutting area, and cutting fluid such as spraying and the like and chips generated by rotary cutting actions can fall to the driving wheel below, and the pollution of the driving wheel and the protection of the motor are adversely affected. However, due to the inclination of the structural arrangement of the inclined wire mesh inclined lathe bed, the driving wheel and the driving motor can effectively avoid the positions where spraying and cutting chips fall, and the inclined wire mesh inclined lathe bed is beneficial to guaranteeing the cleaning of the driving wheel and the driving motor and reducing faults caused by water, dirt and the like. In addition, the workpiece rotating at a low speed can also throw the mixture of cutting fluid, dust, cuttings and the like which are acted on the seam and the outer surface of the silicon rod away from the cutting area to a certain extent under the spin action.

As shown in fig. 7, fc is the tangential cutting force of the cutting line on the round bar of material (i.e., the workpiece) when the cutting mechanism cuts the silicon bar, fr is the radial force of the cutting line on the round bar of material when the cutting mechanism cuts the silicon bar; fc' is the reaction force of Fc; fr' is the reaction force of Fr; g is the gravity of the material, vc is the running speed of the cutting wire net, vf is the feeding speed of the cutting mechanism, n is the rotating speed of the silicon rod, and F is the resultant force; it is known that the inclination of the wire mesh in the cutting zone can be such that the resultant of the cutting and feed forces is in a direction opposite to the direction of gravity of the mechanism, so that the gravity of the mechanism is used to balance out a portion of the resultant of the cutting forces. It will be appreciated that in the wire cutting machine shown in the figures, taking the current direction of the drawing as an example, it is believed that in the preferred embodiment the diamond wire preferably rotates in a counter-clockwise direction, cutting material from top to bottom.

In another embodiment, the cutting line 106 in the cutting area is disposed obliquely upward, that is, in the above-formed rectangular planar coordinate system, the cutting line 106 in the cutting area is disposed at an acute angle to the X-axis, that is, the cutting line 106 is in the first quadrant, and the first inclined mounting surface 51 is in the fourth quadrant, and the cutting assembly 10 is disposed obliquely upward, which is within the scope of the present utility model.

Specifically, in order to facilitate the installation and alignment, the wire cutting machine further includes a base 50, and the cutting assembly 10 and the rotary clamping assembly 20 are disposed on the base 50. The base 50 has a horizontal table top and a first inclined mounting surface 51, the first inclined mounting surface 51 has a second preset inclination angle with a horizontal plane (i.e., a plane where the X axis is located), the horizontal table top is used as a mounting reference, and a liquid draining device is disposed on the horizontal table top, and the liquid draining device is opposite to the bottom of the first inclined mounting surface 51. The inclined lathe bed occupies small space, and the cutting fluid converged on the lathe bed can flow along the inclined plane to be discharged, so that the problem that the service lives of the guide rail and the screw rod are reduced due to the fact that the cutting fluid of the flat lathe bed cannot be discharged due to the fact that the cutting fluid of the flat lathe bed is converged is avoided, and a mounting foundation is provided for the lower arrangement of the guide rail of the cutter head cutting mechanism.

Generally, the second preset inclination angle is equal to the first preset inclination angle, so that the inclined installation of the cutting assembly 10 is facilitated, the installation error is reduced, and the installation accuracy is improved. It is understood that in another embodiment, the rotary clamp assembly 20 may be disposed on a horizontal table and the cutting assembly 10 disposed on the first angled mounting surface 51, while remaining within the scope of the present utility model.

Specifically, to effect clamping and rotational movement of the workpiece, the rotary clamping assembly 20 includes a mount 203, a rotary drive 202, and a clamp 201. The mounting seat 203 is preferably a cuboid structure, and has an inner mounting cavity therein, the rotary driving member 202 is mounted through the inner mounting cavity, and one end of the rotary driving member 202 protrudes from a side wall of the mounting seat 203, so as to optimize the inner structure. The rotary drive 202 may be provided as a combination of motor and gear shaft, and in other embodiments, a specific drive may be provided as desired. Further, the mounting base 203 has an inclined surface, and the inclined surface is located on the downward side of the mounting base 203 in the inclined direction of the first inclined mounting surface 51, that is, the mounting base 203 may have a trapezoid structure, which increases the contact area with the first inclined mounting surface 51, and at the same time, the component force of gravity on the first inclined mounting surface 51 by the trapezoid structure can act on the structure, thereby improving the stability of the apparatus.

In this embodiment, the jig 201 includes a chuck having a plurality of jaws thereon, one end of the workpiece being fixed by the jaws; the shaft end of the chuck is fixedly connected with the rotary driving piece 202 and is driven by the rotary driving piece 202 to rotate; the shaft end of the rotary driving piece 202 can be fixed with the chuck through a coupling; the chuck may be pneumatic, hydraulic, or electric.

In one embodiment, the wire cutting machine further comprises a sliding driving device, which is located on the base 50, and the sliding driving device is connected with the cutting assembly 10 and/or the rotary clamping assembly 20, so that the rotary clamping assembly 20 and the cutting assembly 10 relatively move to drive the cutting line 106 to cut the workpiece.

It will be appreciated that in order to effect relative movement of the rotary clamping assembly 20 and the cutting assembly 10, the above-described slip drive means is provided, and in a first embodiment, is coupled to the cutting assembly 10 to effect cutting of the workpiece by the cutting wire 106 through movement of the cutting assembly 10; in a second embodiment, the slip driving device is connected with the rotary clamping assembly 20, the workpiece is driven to move by the rotary clamping workpiece, and the cutting assembly 10 is kept stationary relative to the rotary clamping assembly 20, so that the relative movement of the two is realized; in a third embodiment, the slip drive means may be connected to the rotary clamping assembly 20 and the cutting assembly 10, respectively; the sliding driving device is arranged on the base 50, so that a guide rail or a screw rod and other kinematic pairs can be arranged at the bottom of the rotary clamping assembly 20 and/or the cutting assembly 10, and the machining precision can be improved and the equipment reliability can be ensured by arranging the cutting mechanism guide rail, the screw rod and other kinematic pairs.

Specifically, the slip drive device includes a first slip drive assembly 30 and a second slip drive assembly 40. Wherein the first sliding driving assembly 30 is located on the first inclined mounting surface 51 and extends in an inclined direction of the first inclined mounting surface 51; the first sliding driving assembly 30 is connected with the cutting assembly 10 to drive the cutting assembly 10 to move along the inclined direction of the first inclined mounting surface 51 so as to realize feeding cutting of the workpiece; the kinematic pair of the cutting assembly 10 is placed under the cutting assembly, so that the movement is more stable, the feeding movement precision is improved, and the machining precision is further improved.

Similarly, the second sliding driving assembly 40 is located on the first inclined mounting surface 51 and is disposed perpendicular to the first sliding driving assembly 30, i.e. the moving direction of the first sliding driving assembly 30 is perpendicular to the moving direction of the second sliding driving assembly 40; the second sliding driving assembly 40 is connected with the rotary clamping assembly 20 to drive the rotary clamping assembly 20 to move towards or away from the cutting assembly 10; the second sliding driving assembly 40 is arranged, so that the cutting of the bar stock can be realized, and after each section of bar stock is cut, the second sliding driving assembly 40 can be driven to move a preset distance in a direction approaching to the cutting assembly 10, so that the section of the next section of bar stock can be realized; meanwhile, the kinematic pair of the rotary clamping assembly 20 is arranged downwards, so that bar feeding is more stable, and meanwhile, shake of the bar in the cutting process is indirectly reduced, so that the cutting precision of the bar section is higher.

In this embodiment, the first slip drive assembly 30 includes a first slip power member, a first slip drive member, and a first slip guide member. The first sliding power member is located on the first inclined mounting surface 51; the first sliding driving piece is respectively connected with the first sliding power piece and the cutting assembly 10; the first sliding power piece drives the first sliding driving piece to act so as to drive the cutting assembly 10 to slide; the first slide guides are connected to the cutting assembly 10 and the first inclined mounting surface 51, respectively, and guide movement of the cutting assembly 10 along the first inclined surface. The first sliding power piece is a motor, the first sliding driving piece is a ball screw, and the first sliding guide piece is a sliding block and sliding rail mechanism. The slide rail and the ball screw are mounted on the first inclined mounting surface 51. A first slider is mounted under the cutting assembly 10, and movement of the cutting assembly 10 on the first inclined mounting surface 51 is accomplished by the cooperation of the first guide rail and the first slider.

Likewise, the second slip drive assembly 40 includes a second slip power member, a second slip drive member, and a second slip guide member. Wherein the second sliding power member is located on the first inclined mounting surface 51; the second slip driving member is respectively connected with the second slip power member and the rotary clamping assembly 20; the second sliding power piece drives the second sliding driving piece to act so as to drive the rotary clamping assembly 20 to slide; the second slide guides are connected to the rotary clamping assembly 20 and the first inclined mounting surface 51, respectively, and guide the sliding movement of the rotary clamping assembly 20.

The second sliding driving assembly 40 drives the rotary clamping assembly 20 to move along the direction vertical to the cutting panel 101, namely, the direction vertical to the cutting line 106 net, and feeding can be performed in time after cutting, so that cutting is continuously performed, feeding and discharging time is shortened, and cutting efficiency is improved; the specific structure of the second slip drive assembly 40 may be set with reference to the first slip drive assembly 30.

The second sliding power piece is a motor, the second sliding driving piece is a ball screw, and the second sliding guide piece is a sliding block and sliding rail mechanism. Preferably, the first and second slip drive assemblies 30 and 40 are identical in construction to facilitate placement. The ball screw and the slide rail are mounted on the first inclined mounting surface 51, the second slider is fixed on the lower section of the rotary clamping assembly 20, and the linear motion of the rotary cutting assembly 10 on the first inclined mounting surface 51 in the axial direction of the workpiece is completed through the cooperation of the second slider and the second slide rail.

Specifically, the wire cutting machine further comprises a tension wheel 102 and/or a transition wheel 103, wherein the tension wheel 102 and the transition wheel 103 are respectively and rotatably connected to the cutting panel 101, and the tension wheel 102 is positioned at one side far away from the cutting wire 106; the transition wheel 103 serves to guide the cutting line 106. The structure and fixing manner of the tension wheel 102 and the transition wheel 103 can be set according to the prior art, and the tension wheel 102 and the transition wheel 103 can be alternatively set according to the needs.

In one embodiment, the present utility model provides a tension wheel 102 and a transition wheel 103. The first cutting wheel 104, the second cutting wheel 105, one tension wheel 102 and one transition wheel 103 form four vertexes of a parallelogram, and cutting lines 106 are respectively wound around circumferential outer walls of the first cutting wheel 104, the second cutting wheel 105, the tension wheel 102 and the transition wheel 103 to form annular lines. In other embodiments, the number of transition wheels 103 may be set as desired or may be eliminated; that is, in the present utility model, only two cutting wheels, or a three-wheel scheme of two cutting wheels and one tension wheel 102, or a five-wheel scheme of two cutting wheels, one tension wheel 102 and two transition wheels 103 may be provided, which is within the scope of the present utility model. Alternatively, in other embodiments, the cutting assembly 10 may be configured as a reciprocating wire process of a take-up roll and a pay-off roll, as well as a process utilizing a ring-shaped diamond wire; the cutting tool can be used for processing a single diamond wire as a cutting tool, and can also be used for processing a plurality of diamond wires simultaneously.

In a specific embodiment, the wire mesh in the cutting area is provided with a certain inclination angle by the inclined arrangement of the first cutting wheel 104 and the second cutting wheel 105, the inclined arrangement of the wire mesh in the cutting area can balance the self gravity of the mechanism by utilizing the resultant force of acting force generated during cutting of a part of the wire mesh in the cutting area, the whole deformation of the inclined wire mesh inclined lathe bed in the vertical direction is less influenced by gravity, the influence of the structure gravity on cutting is reduced, the requirement on the rigidity of the mechanism is improved, the stability of the mechanism is improved, and the wire bow is more uniform. The precision of the mechanism is higher, the oblique line net oblique lathe bed layout can directly influence the clearance of the ball screw below the carriage, the silicon material feeding carriage is obliquely arranged, and gravity acts on the clearance of the ball screw, so that the reverse clearance in transmission is almost zero, the transmission precision of the mechanism can be improved, and the cutting precision is further improved. The rigidity of the mechanism is better, the net cutting force is close to the component force direction of the gravity of the workpiece, the spindle runs more stably, and the cutting vibration is not easy to cause. Under the condition of the same guide rail width, the length of the carriage is longer, the guide rail travel can be longer under the condition of the same occupied area, and the size of the silicon material which can be processed by the oblique line net machine tool is larger. Compared with a flat wire mesh, the annular diamond wire of the inclined wire mesh has stronger liquid carrying capacity, better lubrication and cooling effects can be obtained in a cutting area, and better processing surface quality can be obtained. Compared with the traditional flat bed structure, the inclined bed structure has no application in the fields of diamond wire cutting or other wire cutting, and improves the situation that dust particles in cutting crystalline silicon or other hard and brittle materials such as photovoltaics/semiconductors are too fine to be fused with cutting fluid to form slurry, so that a movement mechanism cannot be placed under. The slurry can cause pollution of guide rails, lead screws and other kinematic pairs, and friction and abrasion to reduce service life and greatly increase failure rate; the inclined lathe bed structure is more convenient for discharging the chips and the cutting fluid, and is not easy to reside on a cutting movement plane, so that pollution is improved, the lower arrangement of guide rails and the like is possible, the corrosion of the chips and the cutting fluid to equipment is avoided, and the maintenance of the equipment is facilitated.

The volume of the material removed in unit time is more than that of the rotary cutting in a relatively straight cutting mode, the average value is close to 2 times that of the straight cutting, the stress of the diamond wire in a cutting area is larger, and the power consumption for driving the rotary cutting mechanism is larger. The inclined lathe bed structure is favorable for utilizing dead weight drive tool bit feed mechanism of mechanisms such as cutting knife head, and lower for the consumption of straight cutting under the long-term service condition to owing to the atress direction of structure utilizes gravity to disperse the direct horizontal effort to tool bit mechanism downwards to one side, tool bit cutting mechanism's stability is higher, and the deformation accumulation of atress is less.

The diagonal mesh is beneficial to maintain cutting fluid on the diagonal, to have higher residence stability of the droplet on the diagonal than the horizontal, and longer residence time of the droplet than the vertical. The rotating action facilitates droplet spreading compared to straight cutting. The inclined line may more facilitate the cutting fluid to remain in the cutting zone for a long period of time and to be diffused into the cutting zone by the rotating action, the cutting zone having a smaller area and more concentrated on the first half chord length of the drop entry than the straight cut. The distribution area and the action effect of the cutting fluid in the kerf of the diamond wire are reduced in a stepwise manner from the entrance of the diamond wire to the exit of the diamond wire, so that the workpiece in the cutting area is not uniform in cooling on the whole contact length of the diamond wire, the cutting area in rotary cutting is mainly concentrated at the entrance end of the diamond wire, the shape of the cutting area is similar to that of an effective cooling area, the cooling effect can be ensured, and the action can be better reflected under the action of the effective fluid carrying effect of the oblique line net.

The utility model also relates to a cutting method of the wire cutting machine, which comprises the following steps:

s11: setting a cutting line 106 in the cutting area at a first preset inclination angle with the vertical plane;

s12: the bar is clamped by the rotary clamping assembly 20, and the rotary clamping assembly 20 can drive the bar to rotate around the axis of the bar;

s13: and driving the bar to rotate around the axis of the bar, and controlling the cutting line 106 in the cutting area to feed along the direction perpendicular to the axis of the bar at a first preset speed so as to cut the bar.

Specifically, the method further comprises the following steps:

s14: when the bar is cut once, controlling the cutting line 106 in the cutting area to retract to the initial position at a second preset speed;

s15: and driving the bar stock to move a preset distance along the axis direction of the bar stock, and repeating the step S13 until the whole bar stock is cut.

Correspondingly, the method adopts the cutting line (or cutting wire net) which is obliquely arranged to cut the bar, and simultaneously drives the bar to rotate, and the core of the scheme substantially corresponds to the scheme of the cutting machine in the embodiment, so that the same effect as the embodiment can be achieved by adopting the method, and the description is omitted.

While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A wire cutting machine, comprising:

the cutting assembly comprises a cutting panel, a first cutting wheel and a second cutting wheel which are used for winding a cutting line are arranged on the cutting panel, the cutting line is wound on the peripheries of the first cutting wheel and the second cutting wheel, and a cutting area is formed between the first cutting wheel and the second cutting wheel; the cutting line and the vertical surface in the cutting area are provided with a first preset inclination angle;

2. The wire cutting machine of claim 1, further comprising:

3. The wire cutting machine of claim 2, wherein the rotary clamping assembly comprises:

the mounting seat is provided with a mounting inner cavity;

4. A wire cutting machine according to claim 3, wherein the mount has an inclined surface on a downward side of the mount in an inclined direction of the first inclined mounting surface.

5. The wire cutting machine of claim 2, further comprising:

6. The wire cutting machine according to claim 5, wherein the slip driving means comprises:

7. The wire cutting machine of claim 6, wherein the first slip drive assembly comprises:

8. The wire cutting machine of claim 6, wherein the second slip drive assembly comprises:

9. The wire cutting machine of claim 1, further comprising:

10. The wire cutting machine of claim 9, wherein the first cutting wheel, the second cutting wheel, one of the tension wheels and one of the transition wheels form four vertices of a quadrilateral, and the cutting wire is wound around the outer circumferences of the first cutting wheel, the second cutting wheel, the tension wheel and the transition wheel, respectively, to form an endless wire.

11. The wire cutting machine according to any one of claims 1-10, wherein the first preset inclination angle is 30 ° to 60 °.