TWM508404U - Grinder and chamfering device for processing periphery of board - Google Patents

Description

Peripheral processing tool and chamfering device for sheet metal

The present invention relates to an abrasive tool for grinding a periphery of a glass plate or other plate material, and a device for chamfering the same, and particularly to a plate material having a curved plate surface (hereinafter referred to as "3D panel". ") The peripheral edge of the processed sheet and the chamfering device.

The general method of cutting the glass plate is to use the brittleness of the glass to scribe the surface of the glass plate with a sharp-shaped cutter head or roller, and to develop a micro-crack in the vertical direction caused by the scribe by heat or impact. Cut off. In the cut edge of the glass sheet cut in such a manner, a sharp ridge line is formed. Therefore, it is necessary to chamfer the ridge line portion so as not to scratch the operator's finger or remove the ridge line crack or crack.

The existing chamfering method is carried out using a composite grinding tool having a plurality of disc grinding tools that rotate around an axis substantially parallel to the ridge line to be chamfered, and the forming abrasive. A circumferential groove corresponding to the cross-sectional shape of the periphery of the processed glass plate is provided.

FIG. 6 is a partial enlarged view of a conventional shaped abrasive article 30 and a glass plate w chamfered by the shaped abrasive article 30. The shaped abrasive article 30 is provided with a circumferential groove 70 formed of a cylindrical abrasive face 6 and upper and lower conical abrasive faces 8, 9, and an end face u of the periphery of the glass plate w is ground by a cylindrical abrasive face 6. The chamfered surfaces s and t of the upper and lower sides are ground by the conical abrasive surfaces 8, 9 respectively, and the chamfering (inclination angle) θ of the chamfered surfaces s and t with respect to the surface of the glass plate w is conventionally set. Although it is 45 degrees, the chamfering angle θ tends to become small (for example, θ=15 degrees to 35 degrees), and a in the figure is the rotation center axis of the shaped grindstone 30.

In recent years, in the display panel, its glass cover, mirror and other products, 3D (three-dimensional) of the glass plate has been started, for example, in order to make the image appear stereoscopic or to obtain a projection surface with the image (equivalent to the screen) A glass plate in which the surface is formed into a curved surface is used as the reflecting surface corresponding to the unevenness of the surface. In a 3D panel having a curved plate surface, in order to remove cracks and notches of the ridge line, it is necessary to perform chamfering of the periphery.

The chamfering process of the existing glass plate is performed by moving the shaped abrasive tool and the composite abrasive tool along the circumference of the glass plate to be processed, and the central axis of rotation of the shaped abrasive tool is at right angles to the plate surface of the glass, and the composite abrasive article The center axis of rotation is parallel to the face of the glass sheet. Since the circumference of the flat glass plate is on a 2-dimensional plane, by moving the chamfering tool relative to the circumference of the glass plate in the XY plane in the Cartesian coordinate system or the θ-r plane in the polar coordinate system, It is possible to perform chamfering of the circumference.

In the peripheral processing of the 3D panel, it is necessary to relatively move the abrasive tool relative to the panel in a 2-dimensional plane, and also need to move relative to the Z-direction perpendicular to the 2-dimensional plane, and the control of the position of the abrasive tool in the Z-direction can It is carried out by providing a lifting device that moves the grinding tool in the direction of its central axis of rotation, and controls the lifting device by an NC device that reads CAD data of the 3D panel.

However, as shown in FIG. 6, since the chamfering is performed by the circumferential groove 70 provided on the outer periphery of the shaped grindstone 30, and the circumferential groove 70 is rotated in a two-dimensional plane perpendicular to the rotational center axis a of the shaped grindstone 30, Therefore, in the portion where the periphery of the 3D panel changes in the Z-axis direction, the direction of the periphery of the 3D panel and the direction of the circumferential groove 70 of the grindstone intersect. The circumferential groove 70 of the conventional shaped abrasive article 30 is a groove having a trapezoidal cross section, and the inclination angle θ of the conical abrasive faces 8 and 9 becomes a shallow angle of 15 to 35 degrees with the thinning of the glass plate, so When the direction of the peripheral edge of the panel subjected to the chamfering process is deviated from the direction of the circumferential groove 70 of the grindstone, the conical grinder surfaces 8, 9 of the shaped grindstone 30 will be deeply cut into the peripheral edge of the panel to cause damage to the processed shape, in order to avoid this. In this case, it is necessary to incline the central axis of rotation a of the shaped abrasive article 30 such that the direction of the circumference of the 3D panel is parallel to the direction of the circumferential groove 70 of the shaped abrasive article 30, but this causes the structure and control of the chamfering device to become Extremely complicated.

In order to solve the above-mentioned deficiencies and limitations of the peripheral edge grinding tool of the existing plate, the present invention proposes a peripheral edge grinding of the plate which can perform the chamfering of the periphery of the 3D panel without performing the control of tilting the axis of rotation of the forming tool. Further, there is provided a chamfering device capable of performing cutting and chamfering of a periphery of a 3D panel on the same apparatus.

The present invention solves the technical problem of the peripheral machining tool for a sheet material, comprising: a central axis of rotation, and two spherical abrasive surfaces disposed opposite to each other with the central axis of the rotation as a central axis.

The spherical abrasive surface includes a spherical shape, a rotating circular shape, and the like, and the ball centered on the rotation center axis of the grinding tool or the surface equivalent to the ball is oriented toward the processed plate on the entire surface ( Since the workpiece is formed into a convex abrasive surface, the chamfered surface of the 3D panel which is chamfered by the present invention has a concave curved surface.

In the above-mentioned peripheral edge of the plate material, the cylindrical abrasive surface is connected to the inner diameter end of the two spherical abrasive surfaces.

The present invention can simultaneously perform the grinding of the end faces of the 3D panel and the chamfered surfaces of the upper and lower sides by means of a lifting device provided with a peripheral grinding tool moving in the direction of the central axis of rotation and an NC device for controlling the lifting device.

The present invention solves the technical problem of the chamfering device for a sheet material, comprising: a peripheral edge grinding tool comprising a center axis of rotation and two spherical abrasive surfaces disposed opposite the center axis of rotation; a table that moves the peripheral processing tool in a direction perpendicular to a face of the processed 3D panel; and a control device that controls the longitudinal feed table and the peripheral edge machining tool to be processed as a 3D machined The movement of the periphery of the panel rises and falls in association.

The chamfering device can perform chamfering of the periphery of the 3D panel using the novel peripheral grinding tool of the present invention.

The chamfering device of the above-mentioned sheet material, further comprising: an abrasive shaft supported by the longitudinal feeding table, wherein the peripheral processing tool is mounted at a lower end of the grinding tool shaft; and a cutting The shaft of the grinding tool is supported by a lifting table provided on the longitudinal feeding table so as to be movable up and down, and a cylindrical cutting surface having a circumferential surface as a grinding surface is attached to a lower end of the cutting tool shaft. Abrasives.

The chamfering device can continuously cut and chamfer the 3D panel on the same device.

The enhancements that can be obtained by the novel techniques include:

1. The peripheral edge grinding tool of the present invention proposes that in the chamfering process of the periphery of the 3D panel, it is not necessary to tilt the grinding tool axis correspondingly with the inclination of the periphery of the panel, and the peripheral edge grinding tool is used to surround the 3D panel. The control of up and down movement in a manner in which the Z direction is aligned is capable of performing an appearance and substantially uniform chamfering.

2. The chamfering device of the sheet material proposed by the present invention can provide chamfering processing for a 3D panel by using a conventional control device for performing NC control of the axial movement of the grinding tool shaft.

1‧‧‧ spindle

3 (3a, 3b) ‧‧‧ Abrasives

4(4a, 4b)‧‧‧Spherical abrasive surface

5(5a, 5b)‧‧‧Spherical abrasive surface

6‧‧‧Cylinder Abrasive Surface

7‧‧‧ week slot

8, 9‧‧‧ Conical Abrasive Surface

11‧‧‧ bearing

12‧‧‧ Keeper

13‧‧‧ upper surface

15‧‧‧Spindle motor

21‧‧‧Horizontal feed table

23‧‧‧Horizontal feed motor

24‧‧‧Transverse feed screw

25‧‧‧Longitudinal feed table

26‧‧‧ longitudinal feed motor

27‧‧‧ longitudinal feed screw

28‧‧‧ Lifting platform

29‧‧‧lifting cylinder

30‧‧‧Shaping tools

41‧‧‧Abrasive shaft

42‧‧‧With toothed belt

43‧‧‧Abrasive motor

44‧‧‧ bearing

45‧‧‧cutting abrasives

46‧‧‧Brushless motor

47‧‧‧Cut the shaft of the grinding tool

60‧‧‧NC device

61, 62, 63‧‧‧ servo amplifier

70‧‧‧ week slot

a‧‧‧Rotation center axis

b‧‧‧Chamfer width

C4, c5‧‧‧ contact points of the plate and the spherical abrasive surface

d‧‧‧The interval between curves e and f

The intersection of e, fm, n‧‧‧ and spherical abrasive surfaces

g‧‧‧Mobile

m, n‧‧‧ parallel to the face of p through p, q

P‧‧‧ Edge of the end face

Q‧‧‧ Edge of the end face

s, t‧‧‧ chamfered surface

U‧‧‧ end face

w‧‧‧Sheet workpiece (3D panel)

θ‧‧‧Chamfering (tilt angle)

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a side elevational view of a first embodiment of a peripheral edged abrasive article of the present invention.

2 is a side elevational view of a second embodiment of the peripherally-machined abrasive article of the present invention.

Figure 3 is a partial enlarged view of the main part of the peripherally-machined grinding tool and the processed plate of the present invention.

Fig. 4 is an explanatory view of a chamfering action when the periphery of the sheet material is inclined.

Figure 5 is a schematic illustration of the chamfering device of the present invention.

Fig. 6 is a partial enlarged view of a main part of a conventional peripheral processing tool and a processed plate.

A first embodiment of the peripheral edge grinding tool of the present invention is as shown in Fig. 1. The peripheral edge machining tool 3a has a half ball abrasive face 4a and a ball abrasive face 5a disposed opposite each other, and a joint in the same place. The cylindrical abrasive face 6 between the inner diameter ends of the spherical abrasive faces 4a, 5a.

A second embodiment of the peripheral processing tool for a sheet material of the present invention is shown in FIG. 2. The peripheral edge grinding tool 3b is provided with a cylindrical abrasive surface 6 and two oppositely disposed across the cylindrical abrasive surface 6. Ball-shaped abrasive surfaces 4b, 5b.

The spherical abrasive surfaces 4 (4a, 4b) and 5 (5a, 5b) are perfectly convex curved surfaces centered on a line perpendicular to a plane perpendicular to the central axis of rotation of the peripheral grinding tool, the balls The inner diameter ends of the abrasive grinds 4, 5, that is, the bus bars at the positions where the spherical grindstone faces 4, 5 are joined to the cylindrical grinder face 6, and the bus bars of the cylindrical grinder face 6 (with the central axis of rotation) The angle formed by a parallel line is 105 degrees to 135 degrees.

As shown in Figs. 3 and 4, the lines e and f where the faces m, n and the spherical abrasive faces 4, 5 intersect are a circular curve or a circle which approximates a circle, and the interval d between the two curves e and f is substantially Constantly, wherein the faces m and n are parallel to the central axis of rotation a of the peripherally-grinding abrasive, and respectively include the chamfered surface s when grinding with the spherical abrasive faces 4, 5, and the ridgeline p of the end face side of t and The ridge line q on the side of the board. When the peripheral edge of the plate workpiece w is obliquely contacted with the spherical abrasive faces 4, 5, the contact points c4, c5 of the plate workpiece w and the spherical abrasive faces 4, 5 are directed to the relative movement direction of the plate workpiece w and the grinding tool 3 (Fig. The right direction of 4 is moved back and forth. In the circumferential machining tool of the present invention in which the spherical abrasive faces 4, 5 are formed in a spherical shape, the movement amount g of the contact points c4, c5 is small, and the interval d of the curves e, f in the position after the movement thereof It also hardly changes, so the chamfer width b and the chamfer θ hardly change. On the other hand, in the conventional peripheral edge grinding tool in which the chamfering grinder surfaces 8 and 9 are formed into a conical surface as shown in Fig. 6, the lines corresponding to the curves e and f are formed in a hyperbola, and therefore are inclined at the periphery of the 3D panel. In part, the chamfer width b and the chamfer θ greatly vary. As shown in FIGS. 3 and 4, in the case where the upper and lower chamfered surfaces s and t are simultaneously chamfered by the spherical abrasive surfaces 4 and 5, when the 3D panel w is inclined, the end surface u is The width is narrowed, but the degree of narrowing is also smaller than that of the conventional structure, and it hardly becomes a problem in chamfering of a commonly used 3D panel.

The embodiment of the chamfering device of the present invention is as shown in FIG. 5, wherein the main shaft 1 is a hollow shaft in the vertical direction, and is rotatably supported by the fixed frame 11 to the device frame, and the upper end of the main shaft 1 is fixed. The holder 12 is formed, and the upper surface 13 of the holder 12 is formed as a workpiece holding surface corresponding to the curved surface of the sheet workpiece w. The sheet material workpiece w conveyed to the holder 12 is held by the upper surface 13 by vacuum suction, for example, by a negative pressure supplied through a hollow hole of the main shaft 1. A spindle motor (servo motor) 15 is coupled to the lower end of the main shaft 1. The spindle motor 15 is connected to the NC device 60 via the servo amplifier 61, and the rotation angle of the spindle 1 is controlled by the command of the NC device 60.

The lateral feed table 21 is located above the main shaft 1, and the lateral feed table 21 is movably guided on a lateral guide (not shown) provided in the horizontal direction of the apparatus frame, and screwed into the lateral feed. A motor (servo motor) 23 is a rotationally driven transverse feed screw 24. The infeed motor 23 is connected to the NC device 60 via a servo amplifier 62, and the moving position of the infeed table 21 is controlled by the NC device 60.

The longitudinal feed table 25 is movably mounted on a longitudinal guide (not shown) fixed in the vertical direction of the lateral feed table 21, that is, in a direction parallel to the main shaft 1, and screwed into the longitudinal feed The motor (servo motor) 26 rotationally drives the longitudinal feed screw 27, which is connected to the NC device 60 via a servo amplifier 63, and the moving position of the longitudinal feed table 21 is controlled by the NC device 60.

The elevating table 28 is slidably attached to a guide rail provided in the vertical direction of the longitudinal feed table 25, and the upper end of the elevating table 28 is coupled to the cylinder rod of the lift cylinder 29 mounted on the longitudinal feed table 25.

The peripheral processing tool 3 (3a, 3b) is mounted on the lower end of the grinding tool shaft 41 which is axially supported by the bearing 44 in the longitudinal direction of the longitudinal feed table 25, that is, in the direction parallel to the main shaft 1, the upper end of the grinding tool shaft 41 The toothed belt 42 is coupled to the grinder motor 43.

The cutting grindstone 45 is attached to the lower end of the cutting grindstone shaft 47 in the vertical direction directly coupled to the rotor shaft of the brushless motor 46 attached to the elevating table 28. The axial center of the main shaft 1, the axial center of the grindstone shaft 41, and the axial center of the cutting grinder shaft 47 are located on the same vertical plane parallel to the moving direction of the lateral feed table 21.

As shown in FIG. 5, when the workpiece is machined by the peripheral edge grinding tool 3, the lift table 28 is raised by the lift cylinder 29, and the cut tool 45 is retracted to an upper position that does not interfere with the sheet workpiece w held by the holder 12. . On the other hand, when the sheet workpiece w is to be cut by the cutting grinder 45, the lifting table 28 is lowered by the lifting cylinder 29, and the cutting tool 45 is lowered to the processing position by the longitudinal feeding table 25 to plate the workpiece w Cut off. At this time, the peripheral processing grindstone 3 is retracted to an upper position that does not interfere with the sheet material workpiece w held by the holder 12 by the relative rise of the longitudinal feed table 25 with respect to the elevating table 28. In any of the machining programs, synchronous control is performed by associating the moving position of the infeed table 21 with the rotation angle of the main shaft 1, thereby performing cutting and peripheral processing of a desired planar shape.

The chamfering device of the present invention includes the cutting grindstone 45 and the peripheral edge grinding tool 3, and can cut the grinding tool by cutting the 3D panel w fed to the holder 12 into a predetermined shape by the cutting grinder 45. 45 is retracted upward, and the peripheral edge of the cut 3D panel w is chamfered by the peripheral edge grinding tool 3d. In this case, the peripheral edge grinding tool 3 which does not have the cylindrical grindstone surface 6 can be used.

According to the present invention, when the peripheral grinding tool 3 having the cylindrical grindstone surface 6 is used, when the 3D panel w cut into a predetermined shape in the previous machining program is fed to the holder 12, the peripheral edge can be utilized. The processing tool 3 performs chamfering processing including finishing grinding of the end surface of the 3D panel w.

Referring to FIG. 3, FIG. 4 and FIG. 5, the operation of the chamfering device in the case of cutting and chamfering the fed 3D panel w will be described, and the 3D panel w is fed and fixed to the holder. After that, the elevating table 28 is lowered, and the rotation of the main shaft 1 is synchronized with the rotation of the infeed motor 23 by the NC device 60, and the peripheral edge of the 3D panel w is cut into a predetermined shape.

Next, the cutting grindstone 45 is retracted upward, and the rotation of the main shaft 1 and the rotation of the infeed motor 23 are synchronously controlled by the NC device 60 in accordance with the planar shape of the 3D panel w, and the portion according to the grinding is The height of the periphery of the 3D panel w on the holder 12 is changed, and the rotation angle of the main shaft 1 and the rotation of the longitudinal feed motor 26 are synchronously controlled by the NC device 60, and the main shaft 1 is rotated, thereby the periphery of the 3D panel w. The upper and lower chamfered surfaces s and t are simultaneously processed.

At the time of grinding of the chamfered surface, the end surface of the periphery of the 3D panel w can be finished by the cylindrical grindstone surface 6 provided between the opposed spherical grind surfaces 4 and 5, and can be performed. The rough grinding tool is used as an operation for cutting the grinding tool 45 to increase the cutting speed.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention in any way. Any one of ordinary skill in the art may use the present invention without departing from the technical features of the present invention. Equivalent embodiments that reveal local variations or modifications made by the technical content are still within the scope of the novel features.

3a‧‧‧Abrasive tools

4a‧‧‧Spherical abrasive surface

5a‧‧‧Spherical abrasive surface

6‧‧‧Cylinder Abrasive Surface

7‧‧‧ week slot

a‧‧‧Rotation center axis

Claims (5)

A peripheral edge grinding tool for a sheet material, comprising: a center axis of rotation, and two spherical abrasive surfaces disposed opposite to each other with the central axis of the rotation as a central axis. The peripheral edge grinding tool of the sheet material according to claim 1, wherein a cylindrical grinding tool surface is coupled to an inner diameter end of the two spherical abrasive surfaces. A chamfering device for a sheet material, comprising: a peripheral edge grinding tool comprising a central axis of rotation and two spherical abrasive surfaces disposed opposite the central axis of rotation; a longitudinal feed table that actuates the periphery The processing tool moves up and down in a direction perpendicular to the face of the 3D panel being machined; and a control device that controls the longitudinal feed table and the peripheral edge machining tool to be associated with the movement of the periphery of the processed 3D panel Lifting and lowering. The chamfering device of the sheet material according to claim 3, wherein a cylindrical grinding tool surface is coupled to an inner diameter end of the two spherical abrasive surfaces of the peripheral processing abrasive. The chamfering device of the sheet material according to claim 3 or 4, further comprising: a grinding tool shaft axially supported by the longitudinal feeding table, the peripheral edge being mounted at a lower end of the grinding tool shaft a grinding tool; and a cutting tool shaft, wherein the shaft is supported by a lifting platform provided on the longitudinal feeding table in a manner capable of lifting and lowering, and a circumferential surface is used as a grinding surface at a lower end of the cutting tool shaft The cylindrical cutting tool.