TWM492223U - Grinding fluid supplying device - Google Patents

Description

Grinding fluid supply device

The present invention relates to a device for supplying a grinding fluid to a rotating grinding wheel having a plurality of grinding regions (portions for grinding) in the axial direction, in particular to a grinding fluid supply device particularly suitable for a grinding device, the grinding machine The cutting device processes the workpiece by changing the relative position of the rotating grinding wheel and the workpiece (ground material) in the axial direction of the grinding wheel, thereby selecting one of the plurality of grinding regions.

The particle size of the rotating grinding wheel used when grinding the workpiece in two steps, rough grinding and fine grinding, or three steps of rough grinding, semi-finishing, and fine grinding. ) varies according to each process. When grinding the inner surface of the groove provided on the workpiece or grinding the periphery of the plate-like workpiece such that the ground surface is narrower than the axial length of the rotary grinding wheel, the outer circumference of one rotating grinding wheel is set. A plurality of grinding regions having different particle sizes, which are divided according to the steps of coarse grinding, semi-finishing, and fine grinding, and changing the position of the grinding wheel in the axial direction with respect to the workpiece, thereby performing multiple using one rotating grinding wheel Grinding of the process.

In addition, when the ground surface of the workpiece is narrower than the axial length of the rotating grinding wheel, if the workpiece and the rotating grinding wheel are fixed in the axial direction for grinding, only a part of the grinding wheel is worn, and therefore, by making the grinding wheel relative to The position of the workpiece is moved axially along the grinding wheel, thereby also grinding the wear of the grinding wheel evenly. In the present specification, a rotating grinding wheel in which a plurality of grinding regions are provided on the outer circumferential surface of the grinding wheel is referred to as a multi-zone grinding wheel.

The rotary grinding wheel 3 shown in FIG. 4 is a grinding wheel having a plurality of groove-shaped grinding regions 31 to 36 on the outer circumference, and is an edge for performing the peripheral edge 21 of the plate material 2 as shown in FIG. The edge of the chamfer 22, 23 of the machined grinding wheel. The rotary grinding wheel 3 is provided with groove-shaped grinding regions 31 and 32 for rough grinding, groove-shaped grinding regions 33 and 34 for semi-finishing, and groove-shaped grinding regions 35 and 36 for fine grinding in the axial direction. . The rotating grinding wheel 3 is moved in the axial direction (up and down direction of the drawing) with respect to the sheet material 2, and the sheet material 2 is ground by the grinding area 31→33→35, thereby performing three steps from coarse grinding to fine grinding. The movement of the grinding zone 31 → 33 → 35 and the movement of the grinding zone 32 → 34 → 36 are alternately performed, whereby the six grinding zones are uniformly worn. In general, the wear of the grinding area for fine grinding is larger than that of the grinding area for rough grinding, and therefore a multi-zone grinding wheel which is designed to have a grinding area for fine grinding larger than a grinding area for rough grinding is also used. .

It is desirable to perform grinding processing while supplying the grinding fluid to the machining point (the contact point between the grinding wheel and the workpiece). In the grinding of a hard brittle plate such as a glass plate, pure water is used as the grinding liquid. The grinding fluid supply device provided in the grinding device includes a nozzle that sprays the grinding fluid toward the machining point. In the past, the nozzle was mounted on a wheel holder that supported the grinding wheel or a wheel cover that covered the grinding wheel, and moved together with the grinding wheel to ascend and descend.

In the case where the multi-zone grinding wheel is attached to the grinding wheel shaft of the grinding device of the grinding fluid supply device having the conventional structure, the grinding process is performed even in the case where only one of the plurality of grinding regions is used. In the grinding, the grinding fluid is also supplied to the entire circumference of the grinding wheel, so that the amount of the grinding fluid supplied is wasted. Although it is also conceivable to reduce the amount of the grinding fluid flowing out from the nozzle to reduce waste, it is not known how much the grinding fluid is being supplied to the grinding region in use, and thus the supply amount of the grinding fluid cannot be accurately managed. In particular, as shown in FIG. 4, in the case of grinding by a groove-shaped or annular grinding region (grinding groove or grinding ring) provided on the outer peripheral surface, it is practically impossible to grasp that the pair is being carried out. The extent to which the grinding fluid is supplied to the inner surface of the ground groove or the surface of the ring.

Further, in the case of the grinding wheel for rough grinding and the grinding wheel for fine grinding, the amount of the grinding fluid required is different, and the supply amount of the grinding fluid supplied to each grinding groove or the grinding ring cannot be grasped, and therefore, The optimum amount of grinding fluid is supplied corresponding to the particle size of the grinding wheel in each grinding zone.

The disadvantage of the processing caused by the excessive supply of the grinding fluid is almost non-existent. On the other hand, the disadvantages caused by the shortage of the grinding fluid are large, and as a result, there is a problem in that the grinding fluid must be supplied sufficiently at all times. Thus, the grinding fluid is supplied in excess.

In order to solve the problems and deficiencies of the prior art grinding fluid supply device, the present invention proposes a grinding fluid supply device suitable for a grinding device equipped with a multi-zone grinding wheel, which can supply an appropriate amount of grinding fluid, thereby avoiding grinding. Excessive consumption of liquid.

The present invention solves the technical problem and provides a grinding fluid supply device having a nozzle for supplying a grinding fluid to a circumferential surface of the rotating grinding wheel. The nozzle rotates in the vertical direction of the shaft together with the rotating grinding wheel. Movement, for the movement of the rotating grinding wheel in the axial direction, the positional relationship of the nozzle to the workpiece remains fixed.

In the multi-zone grinding wheel, one of the plurality of grinding regions formed on the grinding wheel is selected by changing the relative positional relationship between the workpiece and the grinding wheel in the axial direction of the grinding wheel, and the workpiece is processed by the selected grinding region. . Therefore, the nozzle of the grinding fluid supply device of the present invention is characterized in that, for the movement of the rotary grinding wheel in the vertical direction of the shaft, the nozzle moves together with the rotating grinding wheel, and the nozzle moves with respect to the axial movement of the rotating grinding wheel. The positional relationship of the workpiece remains fixed.

Regarding the rotary grinding wheel that grinds the circumference of the workpiece of the grinding device, the grinding wheel seat that moves in the axial direction of the grinding wheel shaft is disposed on the lateral feeding seat, and the lateral feeding seat is in a direction perpendicular to the grinding wheel axis, that is, The cutting wheel moves in the cutting feed direction, and the rotating grinding wheel is axially supported on the grinding wheel seat. In the grinding apparatus having such a configuration, the nozzle of the grinding fluid supply device may be attached to a fixed position of the lateral feed seat.

In the case where the machining point in contact with the workpiece on the circumferential surface of the grinding wheel varies along the circumferential direction of the grinding wheel, a plurality of nozzles for jetting the grinding fluid along the tangential direction of the circumferential surface of the grinding wheel are provided: the angles of the tangential directions thereof are different, thereby processing The entire range of point movements is supplied to the grinding fluid. Further, in the nozzle that ejects the grinding fluid from the outer side of the grinding wheel in the radial direction of the grinding wheel, a plurality of slit-shaped nozzle holes are provided in the circumferential direction of the grinding wheel, and the machining liquid is supplied without missing the entire range of the machining point movement.

In a grinding device including a conventional grinding fluid supply device, when a multi-zone grinding wheel is attached to a grinding wheel shaft and a grinding region is used depending on the purpose of processing, it is difficult to manage the grinding fluid to the currently used grinding region. The amount of supply. On the other hand, in the grinding device including the grinding fluid supply device of the present invention, the grinding fluid can be always supplied to the grinding region being processed regardless of the change of the grinding region, and the grinding of the machining point can be managed. Since the amount of liquid is supplied, it is possible to prevent excessive consumption of the grinding fluid.

In the present invention, the axial position of the grinding fluid supply nozzle is fixed with respect to the movement of the grinding wheel in the grinding region in the axial direction. Therefore, in the grinding process by the grinding wheel having a plurality of grinding regions, An amount of grinding fluid that can be supplied to the grinding zone currently in use. Therefore, it is possible to measure the amount of the grinding fluid required for each step to determine whether it is excessive or insufficient, and it is possible to adjust and manage the amount of the grinding fluid in each step, thereby suppressing waste or supply of the grinding fluid supply. Uniform effect. .

In order to understand the technical features and practical effects of the present invention in detail, and in accordance with the novel content, the following further describes the preferred embodiment as shown in the following figure:

1 to 6 show a preferred embodiment of the present invention, and a grinding apparatus having the grinding fluid supply device of the present invention is shown. As shown in Fig. 6, the grinding apparatus in the drawing is a multi-zone rotating grinding wheel 3 (see Fig. 4) provided with a plurality of groove-shaped grinding regions 31 to 36 on the outer circumference, and is adsorbed on the vertical by means of a negative pressure. The peripheral edge 21 of the sheet 2 (workpiece) on the table 1 on which the axis rotates is subjected to a grinding process, and the rotation of the table 1 and the rotation of the grinding wheel 3 in the vertical direction of the shaft (close to and away from the table 1) The polar motion type grinding device that performs the grinding motion of the upper movement. In such a grinding apparatus, as shown in FIG. 6, when the plate material 2 is a shape other than a circular plate (the rectangular embodiment is shown in FIG. 6), the contact point of the outer periphery of the rotating grinding wheel 3 and the periphery of the plate material 2 becomes the contact point. The machining point p reciprocates in the circumferential direction of the rotary grinding wheel 3 as the plate 2 rotates.

Fig. 1 is a plan view showing a positional relationship between the rotary grinding wheel 3, the table 1, and the nozzles 4 (4a to 4g) of the grinding fluid supply device. The grinding fluid supply device shown in the drawing includes seven nozzles of six nozzles 4a to 4f and four nozzles 4g, and the nozzles 4a to 4f are on the both sides of the grinding wheel from both sides of the movement range of the machining point p sandwiching the rotary grinding wheel 3. The grinding liquid is jetted in the tangential direction of the surface, and the nozzle 4g sprays the grinding fluid from the workpiece side toward the machining point. The nozzle 4g is set to be higher than the table 1 in order to avoid interference with the plate material 2 adsorbed on the table 1, and to eject the grinding liquid from the obliquely upward direction toward the machining point.

As shown in Figures 1 and 2, the table 1 is pivotally supported by a device frame (not shown) and is driven at a fixed position to rotate about a vertical axis. The rotary grinding wheel 3 is mounted on a grinding wheel shaft 51 which is axially supported on the wheel head 5 in the vertical direction. The grinding wheel shaft 51 is driven to rotate by a grinding wheel motor 52 mounted on the wheel head 5 . The wheel head 5 is mounted on the lateral feed seat 55 in a freely movable manner, and the lateral feed base 55 moves the rotary grinding wheel 3 in the vertical direction (the X-axis direction of FIG. 6) close to and away from the table 1, through The lifting position of the wheel head 5 is controlled based on the rotation of the feed screw 54 of the lift motor 53. The lateral feed holder 55 is movably supported on a guide rail (not shown) in the X-axis direction of the apparatus frame, and is screwed to the feed screw 57 that is driven to rotate by the feed motor 56 to be controlled by the X-axis. The position of the direction.

As shown in FIG. 2, FIG. 3, FIG. 4 and FIG. 6, the feed motor 56 and the spindle motor (not shown) that rotates the drive table 1 are synchronously controlled by the controller, and the rotation angle θ of the table 1 is The center of the grinding wheel is controlled in association with the distance x of the center of the table, thereby grinding the peripheral edge of the sheet 2 of a predetermined shape. In this processing, the machining point p (contact point) of the rotating grinding wheel 3 and the peripheral edge 21 of the plate material 2 (workpiece) reciprocates along the circumference of the rotating grinding wheel 3 on both sides of the line s connecting the center of the grinding wheel and the center of the table.

As shown in Fig. 1, Fig. 2, and Fig. 5, the nozzle 4 of the grinding fluid supply device has three movements on both sides of the movement range of the machining point p in consideration of the range of movement of the machining point p on the circumferential surface of the grinding wheel. The nozzles 4a to 4c, 4d to 4f of the grinding fluid are sprayed in the tangential direction on the circumferential surface of the grinding wheel so as to supply the grinding fluid over the entire moving range of the machining point p, and the grinding fluid is supplied from the sheet 2 side toward the rotating grinding wheel 3. Nozzle 4g. A plurality of nozzle holes 41 are provided in the nozzle 4g to supply the grinding fluid throughout the entire range of movement of the machining point p. The nozzles 4a to 4f are supported by a bracket 42 extending from the opposite side of the table of the rotary grinding wheel 3 to both sides of the rotary grinding wheel 3, and the base end 43 of the bracket 42 on the opposite side of the table is fixed by the bolt 45 via the partition 44. At the lower surface of the lateral feed seat 55.

The lateral feed base 55 is supported by the guide rail in the vertical direction of the grinding wheel shaft 51 so as to be movable, and the table 1 is pivotally supported at a fixed position, so that the plate 2 (workpiece) and the nozzle 4 held on the table 1 are in the grinding wheel. The relative position in the axial direction does not change. By adjusting the thickness of the partition 44, the nozzle 4 is adjusted so that the grinding fluid is sprayed to the height of the peripheral surface of the grinding wheel at the height of the sheet 2 held on the table 1.

In the present invention, the flow rate switching unit 6 shown in Fig. 5 is provided in the piping of the grinding fluid supply device. In the embodiment shown in FIGS. 3 to 5, the grinding fluid discharged from the grinding fluid pump 61 passes through the solenoid valves 62 to 64 which are opened and closed according to the controller, and the flow rate adjusting valve 65 connected in series with the respective solenoid valves. One of the flow paths 67 is branched and supplied to the nozzle 4. The flow rate adjustment valves 65 to 67 are adjusted to flow rates different from each other. When the controller selects one of the grinding regions 31 to 36 by the lifting of the wheel head 5, the solenoid valves 62 to 64 are opened and closed to allow the grinding fluid to pass through the machining in the selected grinding region. A required amount of the flow regulating valve is supplied to the nozzle 4. By providing such a member, it is possible to supply an appropriate amount of grinding liquid to each of the grinding regions 31 to 36.

In the case where the multi-zone rotating grinding wheel 3 shown in FIG. 4 is attached to the grinding wheel shaft 51 of the grinding apparatus to machine the peripheral edge 21 of the sheet material 2, as shown in FIGS. 3 to 5, the controller first makes coarse grinding. The grinding wheel holder 5 is moved to perform rough grinding in such a manner that the grinding area 31 or 32 is at the height of the sheet 2, and then the grinding wheel holder 5 is moved in such a manner that the grinding area 33 or 34 for semi-finishing is at the height of the sheet 2. The semi-finishing is carried out, and finally, the grinding wheel holder 5 is moved in such a manner that the grinding area 35 or 36 for refining is at the height of the sheet 2 for fine grinding.

In the rough grinding, semi-finishing, and fine grinding processes, the grinding fluid is supplied from the nozzle 4, but the grinding fluid sprayed from the nozzle 4 and the rotary grinding wheel 3 are axially moved based on the lifting operation of the wheel head 5 Irrespectively, it is sprayed toward the machining point of the grinding zone used in each process, and the supply of the grinding fluid to the unused grinding zone is prevented from being wasted.

The present invention can manage the amount of grinding fluid required for the machining of each grinding zone, for example, by opening and closing the solenoid valves 62-64 provided in the grinding fluid supply circuit in association with the position of the wheel head 5, This also makes it possible to appropriately adjust the amount of the grinding fluid in the rough grinding, the semi-finishing, and the fine grinding.

As described above, according to the grinding fluid supply device of the present invention, in the grinding process by the grinding wheel having the grinding zones for a plurality of processes, the grinding fluid can be collectively supplied to the currently used grinding zone. Therefore, the supply amount of the grinding fluid can be separately managed corresponding to each of the grinding regions, so that the required amount of the grinding fluid can be adjusted and managed for each region, thereby preventing waste or unevenness in the supply of the grinding fluid. Effect.

1‧‧‧Workbench
2‧‧‧ plates
21‧‧‧ Periphery
3‧‧‧Rotary grinding wheel
31~36‧‧‧ Grinding area
4 (4a~4g) ‧‧‧ nozzle
41‧‧‧Nozzle hole
42‧‧‧ bracket
43‧‧‧ base
44‧‧‧Baffle
45‧‧‧ bolt
5‧‧‧ wheel seat
51‧‧‧ grinding wheel shaft
52‧‧‧Wheel motor
53‧‧‧ Lift motor
54‧‧‧feed screw
55‧‧‧Horizontal feed seat
56‧‧‧Feed motor
57‧‧‧feed screw
6‧‧‧Flow switching unit
61‧‧‧ grinding fluid pump
62~64‧‧‧ solenoid valve
65~67‧‧‧Flow adjustment valve
p‧‧‧Processing point
S‧‧‧ line
x‧‧‧Distance angle θ‧‧‧

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a plan view showing a preferred embodiment of the present invention. Fig. 2 is a side view showing a standby state of the grinding wheel. Fig. 3 is a side view showing the machining state of the grinding wheel. 4 is an enlarged side elevational view showing a portion of a multi-zone grinding wheel and a grinding fluid supply device. Fig. 5 is a view showing a supply pipe of a grinding fluid. Fig. 6 is a schematic plan view of a grinding device for machining point swinging. Fig. 7 is an enlarged view of the periphery of the workpiece after chamfering.

1‧‧‧Workbench

2‧‧‧ plates

21‧‧‧ Periphery

3‧‧‧Rotary grinding wheel

4a~4g‧‧‧ nozzle

42‧‧‧ bracket

43‧‧‧ base

5‧‧‧ wheel seat

52‧‧‧Wheel motor

54‧‧‧feed screw

55‧‧‧Horizontal feed seat

56‧‧‧Feed motor

57‧‧‧feed screw

Claims (3)

A grinding fluid supply device is provided in a grinding device, the grinding device is provided with a rotating grinding wheel, the rotating grinding wheel has a plurality of grinding regions on the circumferential surface, and the grinding device is opposite to the workpiece through the rotating grinding wheel Moving the grinding wheel in the axial direction to grind the workpiece by one of the plurality of grinding regions; the grinding fluid supply device is provided with a nozzle for supplying the grinding fluid to the circumferential surface of the rotating grinding wheel, and the rotating grinding wheel is perpendicular to the axis In the upper movement, the nozzle moves together with the rotating grinding wheel, and the positional relationship between the nozzle and the workpiece remains fixed for the axial movement of the rotating grinding wheel. The grinding fluid supply device according to claim 1, wherein the rotary grinding wheel is axially supported on a grinding wheel holder that is mounted in a lateral direction that moves in a direction perpendicular to a grinding wheel axis of the rotating grinding wheel. The seat is moved axially along the grinding wheel; the nozzle is mounted on the lateral feed seat. The grinding fluid supply device according to claim 1, wherein the rotary grinding wheel is axially supported on a grinding wheel holder that is mounted in a lateral direction that moves in a direction perpendicular to a grinding wheel axis of the rotating grinding wheel. Abutting on the seat and moving axially along the grinding wheel; the grinding fluid supply device is provided with a plurality of the nozzles, the plurality of nozzles being mounted on the lateral feed seat and comprising: a peripheral surface of the rotating grinding wheel A plurality of nozzles for jetting the grinding fluid in the tangential direction, and nozzles for jetting the grinding fluid to the circumferential surface of the grinding wheel from the workpiece side in the radial direction.