JP2002307307A - Table top type three head diamond dresser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase dressing formation speed of a grinding wheel by a table top dresser. SOLUTION: This table top type three head diamond dresser 100 is constituted such that it has one set of block 102 parts holding single grindstone dressers 104, 105 dressing a side face of the grinding wheel on an upper part inclined face of a base 101 having a recessed shape, one set of single grindstone dressers are provided at symmetrical positions for block by inclining on an inner side so that an angle αat which virtual extension lines of head top parts of these single grindstone dressers cross is 90 to 150 degrees and in such a way that a height of the head top part of the single grindstone dresser becomes the same height for a slide table reference face, a distance between head top parts of one set of single grindstone dressers dressing the side face of the grinding wheel and a width of a block recessed part are larger than a width of the grinding wheel to be dressed, a block part 107 holding a single grindstone dresser 106 dressing an outer peripheral face of the grinding wheel is provided on a side face of either 102 of the block parts, and a height of the single grindstone dresser head top part for the slide table reference face is the same as or slightly larger than a height of the head top part of the single grindstone dresser dressing the side face of the grinding wheel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tabletop type dressing machine for grinding a side surface and an outer peripheral surface of a grindstone when a grindstone of a grinding device for grinding a work such as metal, ceramic, glass or the like with a rotating grindstone is worn. Regarding three diamond dresser.

[0002]

2. Description of the Related Art For example, there are known grinding devices for grinding a work provided on a table with a grindstone (JP-A-55-83567, JP-A-59-59349 and JP-A-61-59349).
173851, JP-A-4-13552, JP-A-200
No. 1-9718). 5 and 6 show an example of the surface grinding apparatus. In the figure, 1 is a surface grinding device, 2 is a work, 3
Is a grindstone, 4 is a table that can reciprocate in the horizontal direction (X-axis direction), 5 is a worktable, 6 is an electromagnetic chuck, 7 is a saddle that can reciprocate in the front-rear direction (Z-axis direction), 8 is Operation board,
8b is a button for a manual pulse generator for cutting the grinding wheel up and down, 9 is a column, 10 is a grinding wheel shaft head, 11 is a grinding wheel shaft, and 12 is a grinding wheel 3.
, A vertically moving mechanism (Y-axis direction), 13 a motor, 14 a screw body, 15 a screw shaft, 16 a bearing, 1
7 is a safety protection cover, 18 is a grinding fluid supply nozzle, 19 is a bed, 20 is a tank, 21 is a filter, 22 is a pump, and 23 is a grindstone shaft motor.

The table 4 has a saddle 7 which can slide on a pair of guide surfaces provided on a bed 19 as shown in FIG.
Is positioned by the V-shaped orbital portion provided in the first position. Te
The table is moved by a hydraulic cylinder in the grinding apparatus shown in FIG. 5, but may be of a linear motor type, a belt driven type or a cam driven type.

[0004] The table 4 can be driven in the X-axis direction. In the grinding device 1 shown in FIG. 8, a saddle 7 is supported by a frame so as to be able to reciprocate in the Z direction, and a table 4 is provided on the saddle 7 in the left-right direction (X-axis direction). Are provided movably in the vertical direction (Y-axis direction). In this surface grinding machine, the work 2 is fixed to the chuck on the table 4, the saddle 7 is moved to determine the position in the Z-axis direction, and the table 4 is reciprocated in the X-axis direction. The rotating grindstone of the grindstone head is brought into contact with the work, and the grindstone shaft head is fed in the Y-axis direction to grind the work.

When the grindstone is worn by the grinding of the work, the grindstone is dressed by a diamond dresser to repair the dressing (Japanese Patent Publication No. 64-3624, Japanese Patent Publication No. Hei 5-5-264).
No. 45387, JP-A-2-53560, and 10-55
No. 6).

As a dresser, an NC rotary dresser, an NC overhead dresser, a desktop dresser, and the like are used. Tabletop diamond dressers have the advantage of being inexpensive and easy to install, store and replace. The tabletop diamond dresser is used fixedly at the left or right end of the front of the table, at the center of the table, before or after the table.

As a tabletop diamond dresser for dressing both side surfaces and an outer peripheral edge of a grindstone, a hydraulic type in which an arm holding one single stone diamond dresser can be indexed forward, vertical and rearward by a hydraulic drive system. A three-stage swing dresser and a three-head diamond dresser of Okamoto Machine Tool Works shown in FIG. 4A have been put to practical use.

This three-headed diamond dresser 70 is provided with a single-stone diamond dresser 73 for dressing the outer peripheral edge of the grinding stone on the central top parallel portion 71a of the mountain-shaped base block 71.
A base block holding a pair of single stone diamond dressers 74 and 75 for dressing the side surface of the grindstone 3 on the left and right inclined portions 71b and 71c of the central top parallel portion is mounted on the front surface of the table 4 of the grinding device 1. Support block 7 fixed to the left end
(A CNC precision surface grinder PSG-D issued by Okamoto Machine Tool Works, Ltd. in April 2000).
See page 4 of the XNC catalog).

[0009]

The three-head diamond dresser 70 is inexpensive, compact, and excellent in performance. Recently, there has been a demand from the industry to further increase the dressing speed. The present inventors have found that it is possible to meet the demands of the industry by shortening the movement trajectory of the grindstone 3 when dressing the side surface of the grindstone, and reached the present invention.

[Means for Solving the Problems]

A first aspect of the present invention is a table-type three-head diamond dresser that is installed on a sliding table of a grinding device and dresses a grindstone. On the upper inclined surface of the table, there is a set of blocks for holding a single stone dresser for dressing the side surface of the grindstone. Are provided in such a manner that they incline inward so as to intersect with each other, so that the height of the tops of both the single-stone dressers is the same as the height of the sliding table reference surface, and The distance between the top of the single stone dresser head and the width of the block concave portion for dressing is larger than the width of the grinding stone to be dressed, and the outside of the grinding stone is provided on one side surface of the block portion. A block for holding a single stone dresser for dressing a surface is provided. A tabletop three-head diamond dresser characterized by being equal to or slightly higher than the top of the dresser.

The width of movement of the grinding wheel in the Z-axis direction at the time of dressing the side surface of the grinding wheel is between a pair of monolithic diamond dressers provided at a slant, so that it is shorter than that of a conventional three-head diamond dresser. Time is reduced.

Further, according to the invention of claim 2, in the table type three-headed diamond dresser, the base of the three-headed diamond dresser is provided with a sliding guide extending vertically on a back surface thereof, and a sliding table of a grinding device. The height of the crown of the single stone dresser with respect to the grindstone can be adjusted by fixing it with bolts to the guide rail provided on the side of the support that is bolted to the left end of the front. I do.

By loosening the fixing bolt, sliding the base upward or downward, and again tightening the base to the support block with the fixing bolt, the top height of the single-stone diamond dresser can be adjusted.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the drawings. FIG. 1 is a perspective view of a table-type three-head diamond dresser of the present invention, FIG. 2 is a partial side view showing a state in which the table-type three-head diamond dresser is fixed to the left end of the front of a table of a grinding device, and FIG. FIG. 4 is a partial front view of a table-top three-head diamond dresser fixed to the left end of the table front of the grinding device.

1, 2 and 3, reference numeral 100 denotes a table-top three-head diamond dresser, 101 denotes a concave base, and 102 and 103 denote block portions provided on the concave base 101 and inclined. It has surfaces 102a and 103a. 104 and 105 are single-stone dressers for dressing the side surfaces 3b and 3c of the grindstone.
02a, 103a, and a pair of single-stone dressers is provided at the top 104a, 1 of these single-stone dressers.
05a The angle α at which the virtual extension line intersects is 30 to 150
Degrees, preferably 45 to 120 degrees, inwardly inclined at the block portion at the target position, and the tops 104a, 105a of the single-stone dresser are the same height as the sliding table 4 reference plane. It is provided so that it becomes. The distance L between the tops of the set of single stone dressers for dressing the side surface of the grinding wheel and the width W of the block recess are larger than the width of the grinding wheel to be dressed.

Reference numeral 107 denotes a block portion for holding a single stone dresser 106 for dressing the outer peripheral surface 3a of the grindstone provided on the side surface of one of the block portions. The height of the single-stone dresser crown 106a for dressing the outer peripheral surface of the grindstone with respect to the reference surface of the sliding table 4 is equal to or slightly higher than the height of the top of the single-stone dressers 104 and 105 for dressing the side surfaces of the grindstone. 1-5 mm) high.

The base 101 of the table-type three-head diamond dresser 100 has a sliding guide 10 extending vertically on the back.
1a, and a single stone dresser for the grindstone 3 by being fixed with bolts 110 to guide rails 109a provided on the side of a support 109 fixed with bolts 108 at the left end of the front of the sliding table of the grinding device. 104, 105, 106
The height of the crown can be adjusted.

The dressing of the grindstone is carried out by simultaneous two-axis control of saddle back and forth feed and grinding head vertical feed. In the present invention, a single stone dresser 106 for dressing the outer peripheral surface of the grindstone is not provided in the center of the concave portion of the base 101, but a block 107 provided on the side surface of the block 102 for supporting the single stone dresser 104 for dressing the side surface of the grindstone. On the top of a single-stone dresser to dress the outer surface of the grindstone
The reason that the height with respect to the bull reference plane is set to be equal to or slightly higher than the top of the single-stone dressers 104 and 105 for dressing the side surface of the grinding stone is that the vertical movement (Y-axis direction) during dressing of the grinding stone. In order to shorten the trajectory and to raise and lower the grindstone in the Y-axis direction in the conventional method, it is necessary to carefully work so that the grindstone does not contact the single stone dressers 104 and 105. This is because the diamond dresser 100 does not need to worry.

[0019]

The tabletop three-head diamond dresser of the present invention can increase the dressing speed because the moving trajectory of the grindstone when dressing the grindstone is short. In addition, since the movement trajectory of the grindstone when dressing the outer peripheral surface of the grindstone deviates from the line connecting the tops of the single stone dressers 104 and 105 that dress the side surface of the grindstone,
Dressing work is easy.

[Brief description of the drawings]

FIG. 1 is a perspective view of a tabletop three-head diamond dresser.

FIG. 2 is a partial side view showing a state in which a tabletop three-head diamond dresser is fixed to the left end of the front of a table of a grinding device.

FIG. 3 is a partial front view of a table-type three-head diamond dresser fixed to the left end of the table front of the grinding device.

FIG. 4 is a perspective view a of a known tabletop type three-head diamond dresser and a view b showing the movement of grinding stone dressing.

FIG. 5 is a perspective view of a surface grinding device.

FIG. 6 is a side view of the surface grinding device.

FIG. 7 is a perspective view of a saddle having a guide surface including a V-shaped track on which a table moves.

FIG. 8 is a perspective view of a surface grinding apparatus showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Grinding device 2 Work 3 Grinding stone 4 Table 7 Saddle 9 Column 10 Grinding stone shaft head 100 3 heads Diamond dresser 101 Base 102, 107 Block part 104, 105 Single stone dresser for grinding wheel side surface 106 Single stone for grinding wheel peripheral edge Dresser 109 support

Claims (2)

[Claims] Claims: 1. A grinding device is provided on a sliding table of a grinding device,
A tabletop three-headed diamond dresser for dressing a grindstone, wherein the tabletop three-headed diamond dresser is a set of block parts for holding a single stone dresser for dressing a side surface of a grindstone on an upper inclined surface of a concave base. A set of single-stone dressers for dressing the side surfaces of the grindstones is inclined inward so that the imaginary extensions of the tops of these single-stone dressers intersect, and are positioned at the target positions in the block portion, and both single-stone dressers. The distance between the top of the set of single-stone dressers that dresses the side surface of the grindstone and the width of the block recess are dressed so that the height of the top of the head is the same as the height of the sliding table reference surface. And a block portion for holding a single-stone dresser for dressing the outer peripheral surface of the grindstone is provided on one side surface of the block portion. The height of the top of the single stone dresser for dressing the outer peripheral surface of the grindstone with respect to the sliding table reference plane is equal to or slightly higher than the height of the top of the single stone dresser for dressing the side surface of the whetstone. Three tabletop diamond dresser. 2. The base of a table-top three-headed diamond dresser is provided with a sliding guide extending vertically on the back, and on the side of a support fixed to the left end of the front of the sliding table of the grinding device with bolts. 2. The tabletop three-head diamond dresser according to claim 1, wherein the head height of the single-stone dresser with respect to the grindstone can be adjusted by fixing the head to the provided guide rail with bolts. .