JP3023018B2 - Surface grinder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface grinder provided with a dressing device for dressing a grindstone.

[0002]

2. Description of the Related Art Conventionally, the following are known as this type of surface grinder. That is, as shown in FIG. 4, a saddle 33 is provided on the upper surface of the main body 32 of the surface grinding machine 31 so as to be able to move back and forth (in a direction perpendicular to the paper surface) by a rail (not shown). A work table 35 is movably supported on a rail 34 provided on the upper surface of the saddle 33 so as to extend left and right, and a work W such as a massive metal material is held on the upper surface by magnetic force or the like. At the rear of the main body 32, a square box-shaped column 36 is erected,
A grindstone head 37 is supported on the front surface of the column 36 so as to be vertically movable. A grindstone 38 is rotatably mounted on the grindstone head 37 so that the work W can be ground.

On the work table 35, a dresser 39 having a diamond at its tip is mounted via a support 40. When dressing the grindstone 38, the worktable 35 is first moved to the left and the grindstone 38 is lowered, and the dresser 39 is positioned immediately below the rotation axis of the grindstone 38 as shown in FIG. . Next, the grindstone 38 is dressed by rotating the grindstone 38 in this state. Further, as shown in FIG. 6, by moving the saddle 33 back and forth to move the dresser 39 back and forth, the entire outer peripheral surface of the grindstone 38 is dressed.

[0004]

The work table 3
Since there is only one dresser 39 (single point) provided on 5, for example, if the dresser 39 is for a general grindstone, the dressing grindstone 38 becomes a general grindstone correspondingly. Therefore, when the grindstone 38 is a superabrasive grindstone, the dresser 39 must be replaced with a superabrasive grindstone [for example, cubic boron nitride (CBN), a diamond grindstone]. However, there is a problem that the work of replacing the dresser 39 according to the purpose of use is troublesome, and furthermore, the work of adjusting the verticality of the dresser 39 is required.

The present invention has been made to solve this problem, and an object of the present invention is to provide a surface grinder in which dresser replacement work is reduced and workability associated with dressing is improved. is there.

[0006]

In order to achieve the above object, according to a first aspect of the present invention, there is provided a work table supported reciprocally forward and backward and left and right with respect to a main body, and a work held on the work table. left, right, and the grindstone for machining consists of a dresser for dressing said grinding wheel provided on the work table, with pre-Symbol dresser are a plurality, in the body of the work table
A cylinder mechanism for reciprocating the
Multiple dressers on the table are
Stone rod reaches forward and backward stroke end positions
The gist of the present invention is a surface grinder set at a position where the grindstone can be dressed .

[0007] In the second aspect of the invention, the in the first aspect
A plurality of dressers are placed on the left and right
The gist is a surface grinder installed in the company.

[0008]

According to the first aspect of the present invention, since a plurality of dressers are provided on the work table, when dressing the outer peripheral surface of the grindstone, the dresser is moved by moving a predetermined dresser to a position where the dresser is in sliding contact with the grindstone. Is performed. Also, multiple dressers on the worktable
Is the piston rod of the cylinder mechanism provided in the main body.
When the forward and backward stroke end positions are reached,
Each dresser is set at a position where it can be dressed.
Is drain based on the piston stroke end position.
The position at the time of dressing is easily determined, and the dressing is circular.
It is performed smoothly.

In the second invention, the plurality of dressers are
Because it is installed on the left and right so as to sandwich the
Multiple dressers are set apart from each other.
You. Therefore, they may interfere with each other during dressing.
And the dressing work becomes easy.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 1, a saddle 3 is provided on the upper surface of the main body 2 of the surface grinding machine 1 so as to be able to move back and forth by a slide rail (not shown). A work table 5 is supported on a rail 4 provided on the upper surface of the saddle 3 so as to extend left and right, so that the work table 5 can move left and right. A hydraulic cylinder 6 is disposed in the upper center of the main body 2.

A pair of piston rods 8 extending left and right are attached to a piston 7 in the hydraulic cylinder 6, and the distal ends of the piston rods 8 are fastened and fixed to a mounting plate 9 suspended from the work table 5. I have. The hydraulic cylinder 6 has two cylinder chambers 10 defined by a piston 7.
The operation is performed by supplying or extracting oil from the hydraulic device 11 through the pipe 12 into the a and 10b. When the piston 7 reciprocates left and right by the oil pressure, the worktable 5 moves left and right via the piston rod 8 and the mounting plate 9.

In the present invention, a cylinder mechanism C is constituted by the hydraulic cylinder 6, the piston 7, the hydraulic device 11, and the like. A column 13 is provided upright at a rear portion of the main body 2, and a grindstone head 14 is supported on a front surface of the column 13 so as to be vertically movable. A grindstone 15 is rotatably mounted on the grindstone head 14 by driving means (not shown) so that the work W on the worktable 5 can be ground.

Dressers 16, 17 are mounted on the left and right sides of the work table 5 via support bases 18a, 18b. The dresser 16 on the left side is a dresser 16 for a general whetstone having a diamond at the tip formed in a pointed shape. The dresser 17 on the right is a rotary dresser 17 for a superabrasive grindstone. That is, as shown in FIG. 3, a disk-shaped rotary dresser 17 is rotatably supported on a rotating shaft 20 of a motor 19 on a support base 18a, and the outer peripheral surface of the rotary dresser 17 is
The dressing of the grindstone 15 can be performed in sliding contact with the outer peripheral surface of the grinding wheel 15.

The positions of the dressers 16 and 17 at the time of dressing are set as follows. That is, as shown in FIG. 2, when the piston 7 in the hydraulic cylinder 6 moves to the left end, that is, the stroke end position of the piston 7, the rotary dresser 17 is located immediately below the rotation axis of the grindstone 15, and the piston 7 The general grindstone dresser 16 is positioned so as to be located immediately below the rotation axis of the grindstone 15 when moved to the right end, that is, to the stroke end position of the piston 7. Then, at those positions, the grindstone 15
Dressing is performed.

A control device 21 is provided in the main body 2, and the control device 21 previously stores the amount of movement of the worktable 5, the grindstone 15, the saddle 3, etc., the rotational speed of the grindstone 15, and the like. The device 21 drives the hydraulic device 11 to reciprocate the worktable 5 left and right, drives the grindstone head 14 to move the grindstone 15 up and down, rotates it, and moves the saddle 3 back and forth. It has become.

The operation of the surface grinding machine 1 constructed as described above will now be described. In the state shown in FIG.
When the work W is ground by the grindstone 15, the control device 21 rotates the grindstone 15 by the driving means based on the rotational speed stored in advance, and drives the hydraulic device 11 of the cylinder mechanism C to move the piston 7 left and right. Thereby, the work table 5 is reciprocated right and left. And
The work W held on the work table 5 is ground into a predetermined shape by moving the grindstone head 14 downward.

Due to the grinding of the work W, the outer peripheral surface of the grindstone 15 needs to be dressed due to wear and clogging of the abrasive grains of the grindstone 15. Therefore, dressing of the grindstone 15 is performed by the dressers 16 and 17.

That is, when the grindstone 15 is a superabrasive grindstone, FIG.
When the oil is supplied to the cylinder chamber 10a of the hydraulic cylinder 6 to move the piston 7 to the left end in the cylinder 6, the worktable 5 moves leftward via the piston rod 8 and the mounting plate 9 as shown in FIG. As a result, the rotary dresser 17 moves to just below the grindstone 15. At this position, the grindstone head 14 is lowered to bring the outer peripheral surface of the grindstone 15 into sliding contact with the outer peripheral surface of the rotary dresser 17, and the grindstone 15 and the rotary dresser 17 are synchronously rotated in opposite directions. Then, the outer peripheral surface of the grindstone 15 for the super hard worn during the grinding operation is dressed, and a new ground surface is cut out. Further, by moving the saddle 3 back and forth, the entire outer peripheral surface of the grindstone 15 is dressed.

When the grindstone 15 is a general grindstone, the cylinder chamber 1 of the hydraulic cylinder 6 is reversed in contrast to the case of the super-abrasive grindstone.
When the oil is supplied to Ob and the piston 7 is moved to the right end in the cylinder 6, the worktable 5 moves rightward, so that the dresser 16 for a general grindstone moves to just below the grindstone 15. At this position, the outer peripheral surface of the grindstone 15 is dressed by lowering the grindstone head 14 to bring the outer peripheral surface of the grindstone 15 into sliding contact with the dresser 16 and rotating the grindstone 15.

As described above, in this embodiment, the dresser 16 for general use is provided on the left side of the work table 5 and the rotary dresser 17 for superabrasive grindstone is provided on the right side of the work table 5. Therefore, when dressing the outer peripheral surface of the general whetstone, the work table 5 is moved and the general dresser 16 is used.
Is positioned directly below the grindstone 15, and when dressing the outer peripheral surface of the superabrasive grindstone, dressing of the grindstone 15 is easily performed by positioning the rotary dresser 17 for the superabrasive grindstone directly below the grindstone 15. be able to. Therefore, it is possible to omit the complicated work of replacing the dresser each time according to the grindstone as in the related art,
Workability associated with dresser replacement can be improved.

The hydraulic cylinder 6 provided on the main body 2
Since the plurality of dressers 16 and 17 on the work table 5 are positioned directly below the grindstone 15 at the left end position or the right end position of the piston 7 in the inner side, that is, at the stroke end position, the positions of the dressers 16 and 17 at the time of dressing. Is easily and reliably positioned by the stroke end position of the piston 7, and the dressing is performed smoothly.

Since the two dressers 16 and 17 are not provided before and after the work table 5 but are provided one by one on the left and right, the depth of the work table 5 is not required. Therefore, the surface grinder of this embodiment can be applied to a small surface grinder. In addition, when the dressers 16 and 17 are provided in front and rear, the distance between the dressers 16 and 17 becomes small, so that they may interfere with each other at the time of dressing. However, in the case of the present embodiment, there is no such fear and the dressing work is facilitated.

The present invention is not limited to the above embodiment, but may be modified as appropriate, for example, by combining a dresser for rough cutting and a dresser for finishing as two dressers.

[0024]

According to the first aspect of the present invention, the dresser replacement work can be reduced, the workability associated with dressing can be improved , and the positions of a plurality of dressers at the time of dressing can be improved.
Is at the stroke end position of the piston of the cylinder mechanism.
Dressing can be performed smoothly because positioning is easy.
It has an excellent effect that it can be performed .

According to the second invention, the plurality of dressers are
Dressing because it is installed left and right away
Dressing work without the risk of interference
It has an excellent effect that it can be easily performed .

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of the present invention and showing a state where two dressers are provided on a work table of a surface grinder.

FIG. 2 is a partially broken front view of the surface grinder showing the operation of the embodiment.

FIG. 3 is a main part perspective view showing a state in which a grindstone is being dressed by a rotary dresser.

FIG. 4 is a front view showing a conventional surface grinder.

FIG. 5 is a main part front view showing a state in which the grinding wheel is dressing with a dresser.

FIG. 6 is a main part side view showing a state in which the grinding wheel is dressing with a dresser.

[Explanation of symbols]

2 ... Main body, 5 ... Work table, 15 ... Whetstone, 16 ... Dresser for general whetstone, 17 ... Rotary dresser,
C: Cylinder mechanism, W: Work.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-281871 (JP, A) JP-A-63-114877 (JP, A) JP-A-62-130177 (JP, A) 63962 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B24B 53/00 B24B 53/053

Claims (2)

(57) [Claims] A work table (5) supported reciprocally forward and backward and left and right with respect to a main body (2), and a grindstone for processing a work (W) held on the work table (5). and (15), the result from the work table (5) dresser for dressing said grinding wheel (15) provided on the (16, 17), when said dresser (16, 17) are provided a plurality
In both cases, the work table (5) is left and right on the body (2).
Provided with a cylinder mechanism (C) for reciprocating the
Multiple dressers (16, 1) on the work table (5)
7) replaces the piston rod (8) of the cylinder mechanism (C).
When the wheels reach the forward and backward stroke end positions
(15) A surface grinding machine characterized in that it is set at a position where it can be dressed . 2. The plurality of dressers (16, 17).
Are installed on the left and right so as to sandwich the work (W).
Surface grinding machine according to claim 1, characterized in that it is.