JP2623306B2 - Multi-unit surface grinder - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-unit surface grinder that includes a plurality of grinding units on a common plane such as a cross rail and grinds a work on a work table.

"Prior art" A multi-unit plane having a cross rail provided on a gate-shaped column across a work table on which a work is placed and moved, and a plurality of grinding units on the cross rail serving as a common guide surface. A grinder is used for grinding a long bed sliding surface of a machine tool, for example. In such a multi-unit surface grinder, in order to process a plurality of ground surfaces,
A plurality of grinding units were provided on the cross rail, and each unit had its own NC unit.

In addition, it is difficult to bring each grinding unit close to each other in order to simultaneously process all the restricted sliding surfaces of a work having a large number of restricted sliding surfaces. And processed several times individually.

[Problems to be Solved by the Invention] However, it is wasteful to provide individual NC units for units that are on the cross rail and are not used at the same time, which not only increases the cost but also uses one unit. Sometimes, it must be moved out of the processing area to avoid interference of other units. This unit has a function that can be processed independently but is not used at all.

When the same type of work is processed at intervals, it is time-consuming and inefficient.

Also, when machining each sliding surface of a work having a large number of constrained sliding surfaces, if each sliding surface is separately machined as in the past, the grinding heat, grinding fluid, ambient temperature, etc. will elapse over time. There is a problem that a minute displacement occurs in the workpiece due to the minute difference in the above. Therefore, a long processing time was required to secure high shape accuracy.

The present invention has been made in view of such problems in the related art, and at least two sets of grinding units that are not used at the same time on a cross rail are timely separated from each other and interfere with each other. No configuration and same NC
Is an inexpensive multi-unit surface grinder. It is another object of the present invention to provide a multi-unit surface grinding machine capable of simultaneously grinding each sliding surface of a work having a large number of restricted sliding surfaces.

Means for Solving the Problems The gist of the present invention for achieving the object is a multi-unit surface grinding machine having at least two sets of grinding units provided on a common guide surface and not used at the same time. Wherein the at least two sets of grinding units that are not used at the same time are provided on the common guide surface by a hydraulic cylinder,
A multi-unit surface grinder characterized by being able to be separated and approached in a timely manner so that both units can be positioned and controlled by the same NC device, and formed into a grinding surface in which the profile shape of the grinding wheel forms at least one right angle A plurality of grinding units having a formed grindstone are provided on a common guide surface, and adjacent ground surfaces form a right angle with each other, and the ground surfaces of the workpieces moving in a direction perpendicular to the common guide surface are simultaneously formed. A multi-unit surface grinder for grinding.

"Operation" Since two sets of grinding units that are not used at the same time on the same cross rail are connected by a hydraulic cylinder, one of the grinding units is positioned to process a certain surface of the workpiece, and then the other is ground. The other grinding unit is applied to the surface. Both grinding units are identical
Since the two grinding surfaces are controlled by the NC device, the positioning can be performed continuously.

When using the two sets of grinding units for different workpieces, one of them is retracted to a position where it does not interfere with the other. The whetstone can be left as it is,
When the workpiece is replaced with the same one that has been processed before, the grinding unit that has been retracted can be used immediately, and the trouble such as setup change is not required.

In the case of the apparatus provided with the grinding unit having the forming grindstone having at least one right angle profile, it is possible to grind all the sliding surfaces of the work having the multiple constrained sliding surfaces at a time. Then, since each sliding surface is processed at a time, a ground plane with high shape accuracy can be obtained in a short time without being affected by the environmental temperature, the grinding fluid, the grinding heat and the like.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

 1 to 6 show an embodiment of the present invention.

As shown in FIG. 1, the multi-unit surface grinding machine 10 includes a plurality of grinding wheels and a plurality of grinding wheels on a cross rail 12 provided across a work table 11 provided movably in a direction penetrating the paper surface. A grindstone table that is controlled and moved above is provided, and a grinding unit is mounted on each grindstone table.

The first grindstone table 15 has a first grindstone table 16 that can be controlled and moved on the cross rail 12 in the left and right direction (Z direction) with a driving source and can be controlled and moved in the up and down direction (Y direction). First and second grinding units 17 and 18 are mounted on the first grindstone table 16.

The second grindstone table 20 is mounted on the cross rail 12 so as to be movable in the Z direction. A second grindstone table 21 is provided on the second grindstone table 20 so as to be movable in the Y-axis direction. A single third grinding unit 22 is provided thereon. It is placed.

The third grindstone table 25 is disposed on the opposite side of the first grindstone table 15 across the second grindstone table 20, and has a drive source in the Z direction and is mounted on the cross rail 12 so as to be controllably movable. Have been.

The third grindstone table 25 has a third grindstone table 26 that can be controlled and moved in the vertical direction (Y direction).
Fourth and fifth grinding units 27 and 28 are disposed on the top.

The third grinding wheel head 25 has a hydraulic cylinder in the Z direction.
A piston rod 31 of the hydraulic cylinder 30 is fixed to the second grindstone table 20. Therefore the second
The Z direction movement of the wheel head 20 is performed integrally with the third wheel head 25.

First, second, fourth and fifth grinding units 17, 18, 27, 2
As shown in FIG. 1, the whetstones 17a, 18a, 27a, and 28a have at least one right-angled profile, and have a plurality of constrained sliding surfaces as shown in FIG. The grinding surface of A can be machined at the same time.

Further, in the third grinding unit 22, as shown in FIG. 2, a different work B is subjected to grinding, for example, on the surface a or b in FIG.

A dressing unit shown in FIGS. 3 and 5 that can be attached and removed near the rear end of the work table 11.
40,50 are provided.

In each of the dressing units 40 and 50, rotary dressers 42 and 52 having diamond cup wheels 43 and 53 are mounted on cross tables 41 and 51, respectively, and a box as shown by an arrow in FIG. 4 or FIG. By the movement, the dressing of the ground surface of, for example, the first grinding wheel 17a having a right angle profile can be accurately performed.

 Next, the operation will be described.

When processing a work A having a large number of sliding surfaces as shown in FIG. 1, the first and third grindstone stands 15, 25 are closer to the center than the center, and as shown in FIG. It is ground by the grinding units 17, 18, 27, 28 having.

During such machining, when a workpiece B requiring single-side machining as shown in FIG. 2 enters and is machined, the first, second, fourth, and fifth grinding units 17, 18 for multi-surface machining are performed. , 2
The set 7 and 28 are left as they are, and the first grindstone stand 15 is retracted rightward in FIG. Then, the third grindstone head 25 extends the piston rod 31 of the hydraulic cylinder 30, and retracts the third grindstone head 25 leftward in FIG.

The second grindstone table 21 can independently control the Y axis,
The axis is controlled by an NC device common to the third wheel head.

After finishing the grinding by the third grinding unit 22, the first grinding
And the grinding units 17, 18, 27, 28 on the third wheel head 15, 25
When the workpiece A having a large number of constrained sliding surfaces is machined by the third grinding unit 22 on the second grindstone table 21,
Is retracted upward, the piston rod 31 of the hydraulic cylinder 30 is retracted, and the third grindstone table 25 is drawn from the center to move the work A to the first grinding unit as shown in FIG.
Process with 17. At this time, Y of the third grindstone table 26
The axis control is performed by a motor on the third grindstone stand 25. Since the cross rail 12 itself can be moved up and down separately, it operates when targeting all three units.

In order to dress a polygonal grinding wheel having a right angle profile, as shown in FIG. 4 or FIG. 6, each cup wheel is precisely moved by making a box movement as indicated by arrows in each figure. I can do it. In other words, for the dressing action, the grinding wheel is rotated, and the dressing is performed while the cup wheel is also rotating. In this way, the right-angle corner of the grinding wheel is dressed without being rounded.

According to the multi-unit surface grinder according to the present invention, at least two sets of grinding units that are not used at the same time on the common guide surface are connected to each other by a hydraulic cylinder so that they can be separated and approached, and the same NC is used. Since the positioning can be performed by the device, it can be manufactured at low cost, and the positioning of two sets of grinding units can be continuously performed by a single common NC device, and the two positions can be controlled. Further, in the case of using a multi-surface grinding wheel having at least one right-angle profile, it is possible to simultaneously process all of these sliding surfaces of a work having a large number of constrained sliding surfaces. It is hardly affected by the time change of the liquid and the like, and the grinding process with high shape accuracy can be performed.

[Brief description of the drawings]

1 to 6 show one embodiment of the present invention.
FIG. 2 is a front view showing a main part of the multi-unit surface grinder, FIG. 2 is an explanatory view of an operation during processing of a different work, FIG. 3 is a front view of a dressing unit, and FIG. 4 is an operation by the dressing unit. FIG. 5 is a front view of a dressing unit for another dressing surface corresponding to the dressing surface shown in FIG. 4, and FIG. 6 is an operation explanatory view of the dressing unit. A: Work with a large number of constrained sliding surfaces B: Work of another type 10: Multi-unit surface grinder 12: Cross rail (common guide surface) 15: 1st grindstone table, 16 ... 1 grinding wheel table 17 first grinding unit 18 second grinding unit 20 second grinding wheel table 21 second grinding stone table 22 third grinding unit 25 25 third grinding wheel table 26 Third grinding wheel table 27 Fourth grinding unit 28 Fifth grinding unit 30 Hydraulic cylinder, 31 Piston rod 40, 50 Dressing unit 42, 52 Rotary dresser 43, 53 Cup wheel

Claims (3)

(57) [Claims] 1. A multi-unit surface grinder provided on a common guide surface and having at least two sets of grinding units that are not used at the same time, wherein the at least two sets of grinding units that are not used at the same time are shared by a hydraulic cylinder. On the surface,
A multi-unit surface grinder characterized by being able to be separated and approached at appropriate times and positioning control of both units by the same NC device. 2. A plurality of grinding units each having a grinding wheel formed on a grinding surface in which the profile shape of the grinding wheel is at least one right angle is provided on a common guide surface, and adjacent grinding surfaces are perpendicular to each other. A multi-unit surface grinder for simultaneously grinding the surface to be ground of a workpiece moving in a direction perpendicular to the common guide surface. 3. The multi-unit surface grinding machine according to claim 2, further comprising a rotary dresser mounted on the cross table and dressing a right angle profile of the grinding wheel by box movement.