KR20220076425A - Milling machine for titanium - Google Patents

Abstract

The present invention provides a cutting device for titanium processing that can automatically adjust the focus of a laser by configuring a laser module for preheating a workpiece using a laser to be fed in the vertical direction and in the radial direction of the rotation and rotation axis in the same way as the rotation axis of the tool. for that purpose
In order to achieve the above object, the present invention provides a cutting apparatus for processing titanium for processing by heating and irradiating a surface of a processing portion of a titanium or titanium alloy workpiece with a laser, comprising: a fixed frame supporting other members and serving as a structure; a main shaft frame coupled to the fixed frame; a main shaft which rotates about a rotation axis and is equipped with a tool and is rotatably coupled to the main shaft frame; a table for holding and transferring the workpiece; and a preheating device for heating the surface of the workpiece, wherein the preheating device rotates the laser module with respect to a laser module irradiating a laser to the surface of the workpiece and the spindle frame about the rotation axis, and in a radial direction of the rotation axis It is characterized in that it comprises a control module for transporting and moving up and down based on the direction of the rotation axis.

Description

Cutting device for titanium processing {Milling machine for titanium}

The present invention relates to a cutting device for processing titanium, and more particularly, to a cutting device for processing titanium including a laser preheating device for preheating a workpiece before processing.

In general, titanium or titanium alloy has characteristics such as high specific strength, high toughness, high corrosion resistance, and lightness, and is widely used in industrial fields such as aerospace industry, electronics industry, marine industry, biomedical industry, sports industry, etc. used, and the demand for it is gradually increasing.

In particular, titanium or titanium alloy material is harmless to the human body and has excellent biocompatibility, and is currently widely used in the manufacture of medical products.

However, titanium or titanium alloy material has disadvantages such as high melting point and easy oxidation at high temperature, and there are technical limitations and difficulties in manufacturing titanium materials or mechanical parts in a form that maintains excellent mechanical strength. is in

In addition, titanium or titanium alloy is classified as a difficult-to-cut material because it is not easy to cut. In companies that use titanium alloy to process aircraft parts or turbine blades for power generation, most of them do not cut under accurate machining conditions, but rather have the experience of skilled workers. It is the general reality that the process is performed based on.

For example, Patent Registration No. 1986184 discloses a method of processing a material made of titanium and titanium alloy using a device consisting of a material supply unit, a CNC machining unit, and a post-processing unit made sequentially, and the material is transferred to the CNC machining unit through the material supply unit. passing to; cutting the material in the CNC machining unit; and post-processing the processed material in a post-processing unit, wherein the CNC machining unit includes a housing having a working space therein, a fixed chuck provided in the working space inside the housing, a tip member, a back spindle, a cutter, a fluid injection member, and a material inlet hole provided on one side of the housing and comprising an opening through which the material delivered from the material supply unit is introduced, the fixing chuck fixes the material, and the tip member holds the material cutting, and the back spindle is provided to face the fixed chuck to receive the material from the fixed chuck to fix the material, the cutter cuts the material, and the fluid spray member sprays water to the material Titanium and a titanium alloy processing method provided so as to be disclosed.

In addition, Patent Publication No. 2004-0086027 discloses that titanium and titanium alloys, which have excellent material properties but poor workability, deviate from the existing method of using lubricants to improve workability and surface treatment of the titanium material itself. A method of improving the workability of a titanium material by only the method has been disclosed.

In addition, according to Patent Registration No. 2084206, the present invention enables optimized processing for each use by processing titanium into various shapes as needed, and titanium cutting processing that can obtain high-quality workpieces by minimizing the deviation of processing errors during the processing process A system is disclosed.

On the other hand, a method of processing after raising the temperature by irradiating a laser to a target workpiece in a cutting device for cutting titanium or titanium alloy has been proposed. The method has the advantage of providing high processing efficiency, including the configuration of continuously cutting a high-temperature object by adjusting the direction of the laser according to the processing direction of the tool.

However, the laser irradiation must be controlled differently depending on the transfer of the tool, but in the conventional method, only the irradiation direction of the laser is adjusted so that the focus of the laser cannot be precisely adjusted on the surface of the object.

The present invention has been devised to overcome the disadvantages of the prior art of preheating a workpiece using a laser as described above. The laser module for preheating a workpiece using a laser is rotated in the vertical direction, in the same way as the rotation axis of the tool. An object of the present invention is to provide a cutting device for processing titanium that can be configured to be fed in a radial direction and can automatically adjust the focus of a laser.

In order to achieve the above object, the present invention provides a cutting apparatus for processing titanium for processing by heating and irradiating a surface of a processing portion of a titanium or titanium alloy workpiece with a laser, comprising: a fixed frame supporting other members and serving as a structure; a main shaft frame coupled to the fixed frame; a main shaft which rotates about a rotation axis and is equipped with a tool and is rotatably coupled to the main shaft frame; a table for holding and transferring the workpiece; and a preheating device for heating the surface of the workpiece, wherein the preheating device rotates the laser module with respect to a laser module irradiating a laser to the surface of the workpiece and the spindle frame about the rotation axis, and in a radial direction of the rotation axis It is characterized in that it comprises a control module for transporting and moving up and down based on the direction of the rotation axis.

Preferably, the control module comprises a linear guide fixed to the main shaft frame in a vertical direction, a base coupled to the linear guide to be transported in the linear guide direction, and a vertical actuator configured to transport the base in the vertical direction. do it with

More preferably, the vertical actuator comprises a lead screw, a nut coupled to the lead screw and fixed to the base, and an electric motor for rotating the lead screw.

More preferably, a rotation guide of a circular shape that coincides with the rotation shaft and the center is mounted on the upper end of the base, a rotation carrier is coupled to the rotation guide and transferred onto the rotation guide, and the upper end of the rotation carrier has a radial direction It is characterized in that the radial transfer body is coupled to the transport, and the laser module is rotatably coupled to the radial transfer body.

More preferably, the rotation guide includes an inner diameter through which the main shaft passes and an outer diameter through which a gear is formed, and the rotary carrier includes a driving gear coupled to the gear, a roller rotating in contact with the inner diameter and the driving gear. It is characterized in that it includes a driving motor for rotating.

More preferably, the rotary transfer body is characterized in that it further comprises an idle gear coupled to the gear.

Preferably, the rotation guide further comprises a guide end protruding from the inner diameter and the lower end of the gear.

Preferably, the upper end of the rotary transfer member includes a radial guide disposed in a radial direction, and the radial transfer member is transported according to the radial guide.

More preferably, a rack is formed on one surface of the radius guide, and the rotary carrier further comprises a driving pinion coupled to the rack and a radius motor driving the driving pinion.

More preferably, the rotary transfer member is characterized in that it comprises an idle pinion coupled to the rack and a radius roller in contact with the radial guide opposite to the rack.

Preferably, the radius guide is characterized in that it further comprises a step protruding in both directions at the bottom of the rack.

The cutting apparatus for processing titanium according to the present invention includes a laser module for heating the surface of a workpiece and a control module capable of adjusting the irradiation position of the laser module, wherein the control module moves the laser module up and down with respect to the axis of rotation of the tool. By feeding in the direction of rotation and in the radial direction of the tool axis of rotation, the laser focus can be precisely aligned with the surface of any workpiece, thereby effectively preheating the workpiece in conjunction with the feeding direction of the tool.

1 is a block diagram of a cutting device for processing titanium according to the present invention,
Figure 2 is a block diagram of the tool part shown in Figure 1,
3 is a block diagram of a preheating device of a cutting device for processing titanium according to the present invention;
Figure 4 is a block diagram of the control module shown in Figure 3,
Figure 5 is a configuration diagram of the rotary transfer body included in Figure 3,
Figure 6 is a block diagram of the radius guide included in Figure 3,
7 is a configuration diagram of the radial transfer member included in FIG. 3 .

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but between each component another component It should be understood that may be “connected”, “coupled” or “connected”.

The cutting device 100 for machining titanium according to the present invention is mounted on the machining device 10 shown in FIG. 1 and includes a preheating device 20 for preheating the workpiece 1 made of titanium or titanium alloy.

The processing apparatus 10 includes a fixed frame 11 and a main spindle frame 12 coupled to the fixed frame 11, a main shaft 13 rotatably coupled to the main shaft frame 12, and the work piece 1 It is fixed and is configured to include a table (14) coupled to the fixed frame (11).

The processing device 10 is configured as a CNC device, preferably implemented as a machining center.

Here, the fixed frame 11 serves as a structure supporting the entire processing apparatus 10, and is preferably implemented with a strength that can prevent a decrease in precision due to deformation and vibration caused by cutting force generated by cutting, etc. .

The main shaft frame 12 is coupled differently from the fixed frame 11 according to whether the main shaft 13 and the table 14 are transported.

For example, when the table 14 moves three-axis in the vertical, horizontal, and front-rear directions, the main shaft frame 12 is integrally coupled with the fixed frame 11 .

When the table 14 is implemented with three axes that are transported in the left and right and front and rear directions, and the main shaft 13 is transported in the vertical direction, the main shaft frame 12 is transported up and down with respect to the fixed frame 11 combine in the form

When implemented as a 5-axis device, the main shaft frame 12 includes two rotatable coupling structures with respect to the fixed frame 11 .

On the other hand, as shown in FIG. 2 , the main shaft 13 rotates with a rotation shaft 15 , and the rotation shaft 15 is vertically disposed. The tool 2 is mounted on the center. That is, the tool 2 rotates about the rotation shaft 15 to cut the workpiece 1 .

In addition, the tool 2 may be implemented as a drill in the hole drilling operation, but is implemented as an end mill in the case of flat, lateral or curved surface processing.

The table 13 may be implemented to fix the workpiece 2 and to be transferred up and down, left and right, or forward and backward depending on the implementation method.

In addition, the processing apparatus 10 is configured to include a control module for controlling the overall operation, the control module includes a program and data for processing the workpiece.

On the other hand, as shown in FIG. 3 , the preheating device 20 is coupled to the spindle frame 12 and irradiates a laser on the surface of the workpiece 1 according to the relative transport direction of the tool 2 and the workpiece 1 . and a laser module 30 for increasing the temperature of the workpiece 1 and a control module 40 to which the laser module 30 is fixed to adjust the position of the laser module 30 .

First, the laser module 30 generates a laser by a separate power source to irradiate the laser on the surface of the workpiece 1 without interference with other parts, and the shape thereof may be implemented in various forms.

The control module 40 adjusts the vertical position of the laser module 30 and the rotation angle around the rotation shaft 15 and the radial position of the rotation shaft 15 .

That is, as shown in FIG. 4 , the control module 40 includes a linear guide 41 vertically coupled to the spindle frame 12 , and a base 42 coupled to the linear guide 41 and transported up and down. ), it is mounted on the main shaft frame 12 and includes a vertical actuator 43 for moving the base 42 up and down.

That is, the base 42 serves to support the laser module 30 and the members performing the transfer of the laser module 30 , and the base 42 is moved by the operation of the vertical actuator 43 . It moves up and down in the direction of the rotation shaft 15 .

The base 42 has a circular hole formed in the center to avoid interference with the main shaft 13, and is implemented with rigidity sufficient to support other members, and if necessary, a structure such as ribs for increasing rigidity may include

The vertical actuator 43 is attached to the main shaft frame 12 and serves to move the base 42 up and down, and includes a lead screw, a nut, and an electric motor for driving the lead screw. However, if necessary, it may be implemented as a linear actuator of another method, such as an electric motor is disposed at a location spaced apart by a predetermined distance by using an electric device such as a belt for a lead screw.

A rotation guide 44 is attached to the upper end of the base 42 .

An inner diameter 45 is also formed at the center of the rotation guide 44 , and a gear 46 is formed on the outer diameter.

In addition, a guide end 47 having a larger diameter than the rotation guide 44 is attached to the lower end of the rotation guide 44 to prevent separation of the transfer unit coupled to the outer diameter.

And the inner diameter portion of the guide end (47) is configured to have a smaller diameter than the inner diameter (45).

Of course, the guide end 47 may be manufactured separately and implemented in a form attached to the rotation guide 44 , but may also be implemented in a form integrally formed with the rotation guide 44 .

As shown in FIG. 5 , the rotational transfer body 50 for transporting in the circumferential direction is coupled to the upper end of the rotation guide 44 .

The rotary transfer body 50 includes a body 51 and a driving gear 52 meshed with the gear 46 of the rotation guide 44, and the gear 46 at a position spaced apart from the driving gear 52 by a predetermined distance. ) and an idle gear 53 meshing with and a roller 54 coupled to the inner diameter 45 .

Here, the driving gear 52 , the idle gear 53 , and the lower side of the roller 54 come into contact with one surface of the guide end 47 so that the rotary carrier 50 is not separated from the rotary guide 44 . does not

In addition, the driving gear 52 is operated by power and is connected to the rotation shaft of a rotation motor 55 fixed to the body 51 , and according to the driving of the rotation motor 55 , the rotation transfer body 50 is It is transported along the rotation guide 44 .

Therefore, if the driving of the rotary motor 55 is controlled, the position of the rotary transfer body 50 on the rotation guide 44 can be adjusted.

In addition, the roller 54 may be configured in plurality if necessary.

The rotary transfer body 50 may be configured in such a way that the lower surface of the driving gear 52, the idle gear 53, and the roller 54 are in contact with and supported on the upper surface of the guide end 47, If necessary, the guide end 47 may be omitted, and the lower surface of the body 51 may be implemented in a form in which the lower surface is supported in contact with the upper surface of the rotation guide 44 .

On the other hand, as shown in Fig. 6, the rotary transfer member 50 includes a radial guide 57 disposed on the upper end in the radial direction.

The radius guide 57 has a rack 58 formed on at least one side of both surfaces, and may further include a step 59 at the lower end of the rack 58 if necessary.

As shown in FIG. 7 , a radius transfer member 60 is coupled to the radius guide 57 and transported along the radius guide 57 .

The radial transfer body 60 is a drive pinion 62 that meshes with the rack 58 of the radial body 61 and the radius guide 57, and the drive pinion 62 is spaced apart from the rack by a predetermined distance. It is configured to include an idle pinion 63 meshed with 58, a radius roller 64 contacting the opposite side of the radius guide 57 rack, and a radius motor 65 for driving the driving pinion 62.

Here, the idle pinion 63 and the radius roller 64 are rotatably coupled to the radius body 61 , and the driving pinion 62 is a rotation shaft of the radius motor 65 fixed to the radius body 61 . bind to

Accordingly, according to the rotation of the driving motor 65 , the radial transfer body 60 is transferred in the radial direction of the rotary transfer body 50 .

If necessary, a stopper may be formed on the radius guide 57 to physically limit the transfer of the radius transfer member 60 .

In addition, the radius roller 64 may be composed of a plurality.

The radial transfer member 60 may be configured to be supported by the contact between the lower side of the driving pinion 62, the idle pinion 63 and the radial roller 64 and the step 59, but if necessary, the The step 59 may be omitted, and the lower surface of the radius body 61 may be embodied in a form that is seated on the upper end of the rotation body 51 of the rotation transfer body 50 and slides.

On the other hand, the laser module 30 is attached to the radial transfer member 60 in a rotatable form.

At this time, the rotation direction of the laser module 30 is located on the plane of the rotary carrier 50, and is preferably set perpendicular to the radial direction, and the attitude change of the laser module 30 in the rotation direction is configured to be manually adjusted. do.

What has been described above is only an embodiment for implementing the cutting device for titanium processing according to the present invention, and the present invention is not limited to the above embodiment, and the present invention is provided without departing from the gist of the present invention as claimed in the following claims. Anyone with ordinary knowledge in the technical field to which the invention pertains will say that the technical spirit of the present invention exists to the extent that it can be implemented with various modifications.

1: Workpiece 2: Tool
10: processing device 11: fixed frame
12: spindle frame 13: spindle
14: table 15: axis of rotation
20: preheating device 30: laser module
40: control module 41: linear guide
42: base 43: vertical actuator
44: rotation guide 45: inner diameter
46: gear 47: guide stage
50: rotary transfer body 51: body
52: drive gear 53: idle gear
54: roller 55: rotation motor
57: radius guide 58: rack
59: step 60: radius transfer body
61: radius body 62: drive pinion
63: idle pinion 64: radius roller
65: radius motor 100: cutting device

Claims (11)

In the cutting device for processing titanium, the surface of the processing part of the titanium or titanium alloy workpiece is irradiated with a laser and processed by heating,
a fixed frame supporting other members and serving as a structure;
a main shaft frame coupled to the fixed frame;
a main shaft which rotates about a rotation axis and is equipped with a tool and is rotatably coupled to the main shaft frame; a table for holding and transferring the workpiece; and
a preheating device for heating the surface of the workpiece;
The preheating device is a laser module irradiating a laser to the surface of the workpiece and the main shaft frame by rotating the laser module about the rotation axis, transferring the laser module in the radial direction of the rotation axis, and moving the laser module up and down based on the rotation axis direction. Cutting device for machining titanium, characterized in that it comprises a module.
The method according to claim 1, wherein the control module comprises a linear guide fixed in the vertical direction to the main shaft frame, a base coupled to the linear guide and transported in the linear guide direction, and a vertical actuator configured to transport the base in the vertical direction A cutting device for machining titanium characterized by its features.
The cutting device for titanium machining according to claim 2, wherein the vertical actuator includes a lead screw, a nut coupled to the lead screw and fixed to the base, and an electric motor for rotating the lead screw.
The method according to claim 3, The upper end of the base is equipped with a circular-shaped rotation guide coincident with the axis of rotation, a rotary carrier is coupled to the rotary guide and transferred onto the rotary guide, and the upper end of the rotary carrier has a radial direction. A cutting device for titanium processing, characterized in that the radial transfer body is coupled to the transport, and the laser module is rotatably coupled to the radial transfer body.
The method according to claim 4, wherein the rotation guide includes an inner diameter through which the main shaft passes and an outer diameter through which a gear is formed, and the rotary carrier includes a driving gear coupled to the gear, a roller rotating in contact with the inner diameter and the driving gear. Cutting device for titanium processing, characterized in that it comprises a driving motor for rotating.
The cutting device for machining titanium according to claim 5, wherein the rotary transfer body further comprises an idle gear coupled to the gear.
[Claim 5] The cutting device for machining titanium according to claim 4, wherein the rotation guide further comprises a guide end protruding from the inner diameter and the lower end of the gear.
The method according to claim 4, The upper end of the rotary transfer member includes a radial guide disposed in the radial direction, the radial transfer member is a cutting device for titanium processing, characterized in that the feed according to the radial guide.
[Claim 9] The cutting device for titanium processing according to claim 8, wherein a rack is formed on one surface of the radius guide, and the rotary carrier further comprises a driving pinion coupled to the rack and a radius motor driving the driving pinion.
[10] The cutting device for titanium processing according to claim 9, wherein the rotary transfer member comprises an idle pinion coupled to the rack and a radius roller in contact with a radius guide opposite to the rack.
The method according to claim 9, wherein the radius guide is titanium machining cutting device, characterized in that it further comprises a step protruding in both directions at the lower end of the rack.

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