KR20030008980A - V-groove cutting machine, cutting tool mounter and method for producing v-cut lens of light transferring panel using the same - Google Patents

Abstract

PURPOSE: A V-groove cutter, a tool mounting device, and a method of manufacturing V-cut lenses are provided to manufacture the V-cut lenses for a light guide plates by using a conventional milling machine as the V-groove cutter. CONSTITUTION: A V-groove cutter includes a tool table(11) for mounting a milling tool and a working table(12) for fixing a workpiece to be processed. The tool table(11) is relatively moved with respect to the working table(12) in a three-dimensional manner. The three-dimensional movement of the tool table(11) is controlled by a controller(13). A tool mounting device includes a fixing chassis fixed to the tool table(11) and a mounting panel vertically extended from the fixing chassis. Bolt holes are formed on the fixing chassis to fix the tool mounting device to the tool table(11) by stud bolts.

Description

V-GROOVE CUTTING MACHINE, CUTTING TOOL MOUNTER AND METHOD FOR PRODUCING V-CUT LENS OF LIGHT TRANSFERRING PANEL USING THE SAME}

The present invention relates to a machine tool and a machining method using such a machine tool, and more particularly, to a V-cut lens using a cutter used to machine a V-groove on a surface of a workpiece and such a V-groove cutter. It relates to a processing method. The invention also relates to a tool mounting apparatus for converting a numerically controlled milling machine into a V-groove cutter.

Machine tools vary, but are broadly divided into lathes, milling machines, boring machines, drilling machines, planning machines, slotting machines, grinding machines and cutters. Among them, lathes, milling machines, boring machines, drilling machines and grinding machines are configured to rotate at least one of the workpiece and the tool, and the planning machine and the slotting machine have a relative reciprocating motion without the rotation of the workpiece and the tool. It is configured to perform cutting. Some machine tools, such as lathes, among rotary machine tools can perform cutting while stopping the rotary motion and making only the reciprocating motion.

Meanwhile, V-cut lenses L1 and L2 are illustrated in FIGS. 1 to 4. These V-cut lenses (L1, L2) are in the spotlight as an essential component in the manufacture of the next-generation light guide plate, the pitch (P) is about 100 ㎛ and the depth (D) is about 50 on the surface of the lens (L1, L2) The grooves having a V-shaped cross section of 占 퐉 are arranged continuously. The approximate shape of the V-cut lenses L1 and L2 varies from flat lenses to curved lenses.

In the case where the V-cut lens L1 is a flat lens, the V-groove can be cut by attaching a bite having a tip of a suitable shape to the planning machine to perform a linear reciprocating motion on the lens surface. However, when the V-cut lens L2 is a curved lens, the curved reciprocating motion must be performed along the curved surface of the lens rather than linearly reciprocating the bite on the lens surface. none.

Milling machines can control these reciprocating curves, but the grinding tools mounted on such milling machines are not only able to achieve adequate machining quality but also are very slow. In other words, in order to process the V-cut lenses L1 and L2 with the milling machine, a grinding tool having a conical tip is mounted on the milling machine and rotated so as to be progressively moved in the direction of the V-groove while being formed by the rotary grinding tool. Conical recesses are continuously formed to form a V-groove. However, the optical properties exhibited by the V-grooves formed by successively forming the conical recesses are somewhat different from the optical properties exhibited by the V-grooves formed by pushing out the bite having the V-shaped tip, and the optical properties of the V-cut lens for the light guide plate. It is not desirable in nature. Moreover, the cutting speed of pushing the bite with the V-shaped tip hardly affects the machining precision, while the cutting speed of the method of continuously forming the conical recesses is closely related to the machining precision. Therefore, the speed of processing the V-cut lens by the grinding method is limited compared to the speed of processing the V-cut lens by the cutting method.

This invention is made | formed in view of the above problem, and it aims at the proposal of the machine tool which can process the light guide plate V-cut lens for quick and high quality, whether planar or curved.

This invention also proposes a method of manufacturing a V-cut lens for a light guide plate using such a machine tool.

The invention also aims to propose a tool mounting apparatus used to divert a milling machine to a V-cut lens cutter according to the invention.

1 shows a top view of a V-cut lens for a flat light guide plate,

FIG. 2 shows a front view of the V-cut lens shown in FIG. 1,

3 shows a front view of a V-cut lens for a curved light guide plate,

4 shows a side view of the V-cut lens shown in FIG. 3,

5 is a perspective view showing a typical milling machine,

Figure 6 is an enlarged view of the tool post of the milling machine shown in Figure 5,

FIG. 7 illustrates a state in which the milling tool and its adapter are removed from the tool post shown in FIG. 6 with different viewing directions.

8 is a perspective view of a tool mounting apparatus used to be used as a V-groove cutter according to an embodiment of the present invention;

9 is a front view of the tool mounting apparatus shown in FIG.

10 is a side view of the tool mounting apparatus shown in FIG. 8,

11 is a top view of the tool mounting apparatus shown in FIG. 8;

FIG. 12 is a front view illustrating an example of a bite installed in the tool mounting groove of the tool mounting apparatus shown in FIG. 8.

According to this invention for achieving the above object, there is provided a V-groove cutter for cutting V-grooves on the surface of the workpiece. The cutting machine includes a workbench for fixing a work piece, a tool stand capable of three-dimensional relative movement with respect to the work stand, a bite having a V-shaped cutting tip mounted to the tool stand, and a work piece between the work table and the tool stand. It includes a controller that can control the three-dimensional relative motion.

According to another aspect of the invention, it is possible to control the worktable for fixing the work piece, the tool table capable of three-dimensional relative motion with respect to the work table, and the three-dimensional relative motion between the work table and the tool table. A tool mounting apparatus is provided for use in converting a milling machine comprising a controller into a V-groove cutter. The tool mounting apparatus includes a fixed chassis that can be fixed to the tool bar by a bolting method, and a mounting panel extending vertically downward from the fixed chassis, wherein the mounting panel is equipped with a bite having a V-shaped cutting tip. The mounting groove is formed.

The lower surface of the fixed chassis is preferably formed with an extension for extending the length of the support for supporting the cutting reaction of the mounting panel.

Preferably, it includes a triangular support member comprising two sides joined to the bottom surface of the fixed chassis and the back surface of the mounting panel, respectively.

According to another aspect of the present invention, there is provided a tool stage capable of three-dimensional relative motion with respect to a work bench, and a controller for controlling the relative motion, wherein the tool stand is equipped with a bite having a V-shaped cutting tip. Provided is a method of manufacturing a V-cut lens for a light guide plate. The manufacturing method includes the steps of fixing the workpiece on the work table, inputting the shape and position of the workpiece to the controller, inputting the position of the cutting line in the input workpiece shape, and final cutting depth for each cutting line. And inputting a cutting depth to be cut in one stroke, and cutting each input depth by moving the cutting tip of the bite along the cutting line.

According to another aspect of the invention, it is possible to control the worktable for fixing the work piece, the tool table capable of three-dimensional relative motion with respect to the work table, and the three-dimensional relative motion between the work table and the tool table. A method of manufacturing a V-cut lens for a light guide plate using a milling machine including a controller is provided. The manufacturing method includes the steps of attaching a tool mounting device to a tool stand of a milling machine, mounting a bite having a V-shaped cutting tip in a mounting groove of the tool mounting device, fixing a workpiece on a work table, Inputting the shape and position of the workpiece to the controller, inputting the position of the cutting line in the input workpiece shape, inputting the final cutting depth for each cutting line and the cutting depth to be cut in one stroke; Cutting by the input cutting depth while moving the cutting tip of the bite along the cutting line.

In the cutting step, cutting the cutting depth by one cutting depth in order from the first cutting line to the final cutting line is repeated two or more times, or cutting the cutting depth by one cutting depth in the order from the first cutting line to the final cutting line. Steps and cutting the cutting depth by one cutting depth in order from the final cutting line to the first cutting line are alternately repeated two or more times, or in the cutting step, each step is sequentially performed from the first cutting line to the final cutting line. The cutting depth can be cut two or more times by one cutting depth until the final cutting depth is reached.

Hereinafter, a V-groove cutter according to a preferred embodiment of the present invention and a method of manufacturing a V-cut lens using such a V-groove cutter will be described in detail with reference to the accompanying drawings.

The V-groove cutter according to this embodiment is made by applying the conventional milling machine 10 in FIGS. 5 to 7 with a numerical controller.

As shown in FIGS. 5 to 7, the milling machine 10 includes a workbench 11 for mounting a milling tool and a workbench 12 for fixing a work piece. The tool post 11 is capable of three-dimensional relative motion with respect to the work table 12, which is controlled by the numerical controller 13 implemented by a programmable logic controller (PLC) or the like.

The detailed configuration of the driving mechanism for implementing the relative motion between the worktable 12 and the tool rest 11 by the numerical controller 13 and the control of the numerical controller 13 has been variously used in commercial milling machines, Since there is no direct connection with the core technical idea of this invention, detailed description is omitted here.

The tool stand 11 of the milling machine 10 is provided with a rotating shaft 112 for rotating the milling tool 111, and the work table 12 and the tool stand 11 are avoided during the three-dimensional relative motion. The rotating milling tool 111 in contact with the workpiece forms the desired shape by grinding the workpiece.

The V-groove cutter according to this embodiment removes the milling tool 111 mounted on the rotating shaft 112 and the adapter 113 used for such mounting in the milling machine 10 configured as described above and shown in FIGS. 8 to 11. The tool mounting device 14 shown in the drawings is mounted, and such tool mounting device 14 is used to mount a bite 15 having a V-shaped cutting tip as shown in FIG.

Looking at the main configuration of the V-groove cutting machine configured as described above, the worktable 12 for fixing the workpiece, the tool stand 11 capable of three-dimensional relative movement with respect to the work table 12, and such a tool stand ( A bite 15 having a V-shaped cutting tip mounted at 11) and a controller 13 capable of controlling the three-dimensional relative motion between the worktable 12 and the tool rest 11.

In the following, the configuration of the tool mounting apparatus shown in Figures 8 to 11 will be described in detail.

The tool mounting device 14 includes a fixed chassis 141 to be fixed to the tool post 11 and a mounting panel 142 extending vertically downward from the fixed chassis 141. In this embodiment, the mounting panel 142 is fixed to the fixed chassis 141 by two fixing bolts, the cutting panel 142 is subjected to the cutting reaction in the direction of the arrow A transmitted from the bite 15 during cutting do. If the mounting panel 142 is deformed by this cutting reaction force, such deformation may seriously affect the machining precision of the V-groove on the workpiece to be cut. Therefore, an extension portion 143 is formed on the bottom surface of the fixed chassis 141 to enlarge the length of the support portion supporting the cutting reaction force of the mounting panel 142. If it is insufficient to support the cutting reaction force only by the extension portion 143, it is preferable to weld the support member 144 formed to form a substantially right triangle as indicated by a dotted line in FIG.

As shown in FIGS. 8 and 11, a plurality of bolt holes 145 and 146 are formed in the fixed chassis 141. A stud bolt (not shown) is inserted through the bolt holes 145 and 146 to insert a tool post ( 11), the tool mounting device 14 is firmly fixed to the tool rest 11. The stud bolt may be tightened by inserting a hole or the like drilled into the tool post 11, and if it is difficult to find an appropriate nut hole in the tool post, the nut hole should be machined at an appropriate position of the tool post.

The mounting panel 142 is provided with a mounting groove 147 to insert and fix the bite 15 as shown in FIG. As for the configuration in which the bite 15 is inserted and fixed, a conventional configuration used in a general cutting device can be utilized, and thus detailed description thereof is omitted here.

The cutting tip 151 of the bite 15 is formed in a V shape having the same angle as the internal angle of the V-groove to be processed, and the cutting tip 151 is formed of a high hardness material such as diamond.

Hereinafter, a method of manufacturing the light guide plate V-cut lenses L1 and L2 by the above V-groove cutter will be described in detail.

Here, as shown in Figs. 3 and 4, the top perspective shape is rectangular, and a pair of opposite sides S1 and S2 of the rectangle are straight, and the other pair of sides S3 and S4 are curved. On the upper surface, a method of processing the light guide plate V-cut lens L2 in which a plurality of V-grooves are displayed in parallel with the curved sides will be described.

First, as shown in FIGS. 3 and 4, a workpiece formed on the work table 12 having a top perspective shape formed into a rectangle, a pair of opposite sides of the rectangle forming a straight line, and a pair of other sides forming a curved line. Fix firmly using the auxiliary 121. After inputting the shape and the position of the workpiece to the controller 13 of the V-groove cutter, the positions of the cutting lines C1, C2, C3, ..., CL are input to the input workpiece. After inputting the final cutting depth D for each cutting line C1, C2, C3, ..., CL and the cutting depth to be cut in one stroke, cutting processing is started. At the position of the first cutting line C1, the tool post 11 moves from one of the pair of straight sides S1 and S2 to the other in the negative direction of the Z axis, ie from the rear to the front in the orientation shown in FIG. 5. After advancing and performing one cutting operation at the position of the first cutting line C1, it retreats from the front to the rear in both directions of the Z axis, that is, the orientation shown in FIG. 5, and is moved in both directions of the X axis, that is, the orientation shown in FIG. 5. The cutting process is performed at the position of the second cutting line C2 by moving by one pitch from left to right. In this way, after cutting to the position of the final cutting line (CL), after moving from the right to the left in the negative direction of the X axis, that is, the orientation shown in Figure 5 to return to the position of the first cutting line (C1) The cutting process is completed by repeating the described process a set number of times. While the tool post 11 moves in the negative direction of the Z axis, it moves up and down in the Y axis direction, that is, the orientation shown in FIG. 5, so that the cutting tip 151 of the bite 15 moves while scratching the surface of the workpiece. While moving in both directions of the Z-axis, both directions of the Y-axis, i.e., sufficiently from the lower side to the upper side in the orientation shown in FIG. 5, so that the cutting tip 151 of the bite 15 moves away from the surface of the workpiece. do.

In the manufacturing method exemplified above, the V-cut is completed by repeating one cutting operation from the first cutting line to the final cutting line and then repeating two or less cutting operations from the first cutting line to the final cutting line. Although the processing of the lens has been described, the manufacturing method according to the present invention is not limited thereto, and after performing all the previous cutting operations from one cutting operation to the final cutting operation on the first cutting line, the second cutting operation is performed. The V-cut lens is machined in such a way that the cutting line is moved from the cutting line to the position of the final cutting line in order to perform all the previous cutting processes, or after completing one cutting process from the first cutting line to the final cutting line, By cutting twice from the cutting line to the first cutting line, and then cutting the cutting line from the first cutting line to the final cutting line in order. The V-cut lens may be machined by repeating three or fewer cuts.

Above, based on the preferred embodiment of the present invention, a V-groove cutting machine according to the present invention, a manufacturing method of a light guide plate V-cut lens using such a V-groove cutting machine, and a machine for converting a milling machine to a V-groove cutter Although a tool mounting apparatus has been described, these are merely exemplary and are not intended to limit the invention.

It will be apparent to those skilled in the art that changes, modifications, or adjustments from the above-described embodiments are possible, and therefore, the scope of the appended claims is intended to cover such modifications, changes, or adjustments. will be.

When using the V-groove cutting machine according to the present invention, the manufacturing method of the V-cut lens for the light guide plate using such a V-groove cutter, and the tool mounting apparatus for converting the milling machine to the V-groove cutter, the V-cut for the light guide plate The V-groove cutting machine used in the manufacture of the lens can be easily implemented by applying a conventional milling machine, and using such a V-groove cutting machine, whether a flat or curved type, the V-cut lens for the light guide plate can be quickly and high quality. Can be processed into

Claims (9)

In a V-groove cutter for cutting V-grooves at the surface of the workpiece, A workbench for fixing a work piece, a tool stand capable of three-dimensional relative movement with respect to the work table, a bite having a V-shaped cutting tip mounted on the tool stand, and a three-dimensional space between the work table and the tool stand. V-groove cutting machine comprising a controller for controlling the relative motion. V milling machine comprising a worktable for fixing the workpiece, a tooltable capable of three-dimensional relative motion with respect to the worktable, and a controller for controlling three-dimensional relative motion between the worktable and the tool rest. In a tool mounting device used to convert to a groove cutter, A fixed chassis which can be fixed to the tool stand by a bolt tightening method, It includes a mounting panel extending vertically downward from the fixed chassis, Tool mounting device, characterized in that the mounting panel is formed in the mounting panel for mounting the bite having a V-shaped cutting tip. The method according to claim 2, Tool mounting device, characterized in that the lower surface of the fixed chassis is formed with an extension for extending the length of the support for supporting the cutting reaction of the mounting panel. The method according to claim 2 or 3, And a triangular support member comprising two sides joined to a lower surface of the fixed chassis and a rear surface of the mounting panel. V-cut lens for light guide plate using a tool stage capable of three-dimensional relative motion with respect to the work table and a controller for controlling such relative motion, wherein the tool stand is equipped with a bite with a bite having a V-shaped cutting tip. In the method for producing Securing the workpiece to a workbench; Inputting the shape and position of the workpiece to the controller; Inputting the position of the cutting line in the input workpiece shape; Inputting the final cutting depth for each cutting line and the cutting depth to be cut in one stroke, The cutting method of the V-cut lens characterized in that it comprises the step of cutting by one cutting depth input while moving the cutting tip of the bite along the cutting line. Using a milling machine including a work table for fixing a work piece, a tool table capable of three-dimensional relative motion with respect to the work table, and a controller capable of controlling three-dimensional relative motion between the work table and the tool table. In the method for manufacturing a light guide plate V-cut lens, Attaching the tool mounting device to the tool post of the milling machine; Mounting a bite having a V-shaped cutting tip in the mounting groove of the tool mounting apparatus; Securing the workpiece to a workbench; Inputting the shape and position of the workpiece to the controller; Inputting the position of the cutting line in the input workpiece shape; Inputting the final cutting depth for each cutting line and the cutting depth to be cut in one stroke, The cutting method of the V-cut lens characterized in that it comprises the step of cutting by one cutting depth input while moving the cutting tip of the bite along the cutting line. The method according to claim 5 or 6, In the cutting step, V-cut lens manufacturing method characterized in that for repeating the step of cutting at least one cutting depth in order from the first cutting line to the final cutting line. The method according to claim 5 or 6, In the cutting step, Alternately repeating the step of cutting one cutting depth in order from the first cutting line to the final cutting line and the step of cutting one cutting depth in order from the last cutting line to the first cutting line in an alternating two or more times V-cut lens manufacturing method characterized in that. The method according to claim 5 or 6, In the cutting step, the V-cut lens manufacturing method characterized in that for each cutting line in order from the first cutting line to the final cutting line to cut at least twice by one cutting depth until reaching the final cutting depth.