JPH018293Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a coolant scattering prevention cover device that prevents coolant from scattering between a grinding wheel guard and a dressing ram inserted into the grinding wheel guard.

<Prior Art> Generally, a wheel guard 1 surrounding a grinding wheel G has an elongated hole 4 formed therein, into which a dresser 2 is inserted, as shown in FIG. Therefore, conventionally, in order to prevent the coolant from scattering to the outside of the grinding wheel guard 1, a cover plate 3 that fits with the dresser ram 2 is placed on top of the grinding wheel guard 1, and the elongated hole 4 is opened with this cover plate 3. It's becoming blocked.

<Problems to be solved by the invention> In such a conventional cover device, the dressing ram 2 is moved from the position shown by the imaginary line to the position shown by the solid line so that the grinding wheel G and the dressing tool 5 do not interfere with each other when the grinding wheel is replaced. The grinding wheel G is raised to a position of dimension A from the tip of the grinding wheel G. In this upper position the cover plate 3
In order to prevent the dressing ram 2 from coming off, it is necessary to make the L dimension (the dimension from the outer circumference of the grinding wheel G to the cover plate 3) larger than the A dimension, which causes the problem of the grinding wheel guard 1 becoming larger. It was hot.

<Means for Solving the Problems> The present invention has been made in order to solve the problems of the conventional art. A guide hole is formed in the cover plate, and a cylindrical cover sleeve is inserted into the guide hole to guide the movement of the dressing plate. are slidably fitted in the direction,
The cover sleeve is formed with an inner flange that is locked to a locking flange of the dresser ram as the dresser ram rises, and an outer flange that abuts the periphery of the guide hole of the cover plate as the dresser ram descends. There are some features.

<Operation> In the above configuration, the dressing tool is moved in a direction parallel to the grinding wheel axis and is also moved vertically by a copying device (not shown),
The grinding wheel is dressed. In addition, with this dressing operation, the cover plate slides on the grinding wheel guard, and at the same time, the cover sleeve moves up and down within the guide hole while being supported by the dressing ram, surrounding the gap between this dressing ram and the grinding wheel guard, and This prevents coolant from scattering outward through the gap.

<Example> Hereinafter, an example of the present invention will be described based on the drawings. In FIGS. 1 and 2, G is a grinding wheel, and 10 is a wheel guard surrounding this grinding wheel G. An elongated hole 14 is formed in the upper part of the grinding wheel guard 10 in a direction parallel to the axis of the grinding wheel, and a dressing ram 12 is inserted into the grinding wheel guard 10 through this elongated hole 14. This dresser ram 12 is provided with a copying device (not shown) behind it, and this copying device allows the dresser ram 12 to
The grinding wheel G is transversely fed in a direction parallel to the axis of the grinding wheel and moved up and down in the radial direction, and the dressing tool G is dressed with a dressing tool 15 attached to its tip.

On the other hand, a cover plate 13 for closing the elongated hole 14 is provided on the upper part of the grinding wheel guard 10.
is slidably guided and supported by the guide groove 16 in a direction parallel to the axis of the grinding wheel. This cover plate 13 has a guide hole 18 at its center, and a cylindrical cover sleeve 19 is fitted into this guide hole 18 so as to be slidable in the vertical direction. The cover sleeve 19 has an inner flange 20 on the inner periphery of its end and an outer flange 21 on the outer periphery of its end.

The inner flange 20 is set to have an inner diameter smaller than the outer diameter of the locking flange 23 of the dresser ram 12, and as the dresser ram 12 rises, the locking flange 23 engages with this inner flange 20, and the cover sleeve 19 is attached to the dresser ram 12. It is designed to be lifted up along with it. Also, the outer flange 21
is set to have a larger outer diameter than the guide hole 18,
This outer flange 21 comes into contact with the peripheral edge of the guide hole 18 to prevent the cover sleeve 19 from descending.

In the above configuration, the grinding wheel ram 12 is transversely fed in a direction parallel to the axis of the grinding wheel, and the grinding wheel 12 is moved in the radial direction of the grinding wheel by a copying device (not shown).
is dressed by the dressing tool 15.

Due to this lateral movement of the dresser ram 12, the cover plate 13 slides on the guide groove 16.
This cover plate 13 is longer than the elongated hole 13, so that the elongated hole 13 is always kept closed by the cover plate 13.

At the same time, as the dresser ram 12 moves, the locking flange 23 on the dresser ram 12 engages and disengages from the inner flange 20 of the cover sleeve 19, causing the cover sleeve 19 to move up and down, thereby causing the coolant to scatter from the guide hole 18. is prevented.

Furthermore, when replacing the grinding wheel in the apparatus of the present invention, it is necessary to raise the dressing ram 12 from the tip of the grinding wheel G to the position of dimension A, as shown by the solid line in FIG. However, in the present invention, since the cover sleeve 19 is used, this cover sleeve 1
The cover plate 13 can be provided below by the length of 9, and as a result, the dimension L from the tip of the grinding wheel G to the cover plate 13 is shortened, and the grinding wheel guard 10 can be made smaller.

<Effects of the invention> As detailed above, the device of the present invention has a guide hole formed in the cover plate, a cylindrical cover sleeve fitted into the guide hole so as to be slidable in the forward and backward direction of the dresser ram, and the cover plate. The sleeve has an inner flange that is locked to a locking flange of the dresser ram as the dresser ram rises, and an outer flange that comes into contact with the circular edge of the guide hole of the cover plate as the dresser ram descends. Therefore, the cover plate can be installed downward by the length of this cover sleeve, and the cover plate can be installed closer to the grinding wheel, which has the advantage of making the grinding wheel guard smaller. have

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of the device of the present invention;
FIG. 2 is a plan view taken in the direction of the arrows in FIG. 1, and FIG. 3 is a longitudinal sectional view showing the conventional device. G... Grinding wheel, 10... Wheel guard, 12... Dressing ram, 13... Cover plate, 14... Elongated hole, 15... Dressing tool, 18... Guide hole,
19...cover sleeve, 20...inner flange, 2
1...outer flange, 23...locking flange.

Claims (1)

[Scope of utility model registration request] A long elongated hole is formed in the wheel guard surrounding the grinding wheel in a direction parallel to the axis of the grinder, and a cover plate that closes this elongated hole can be slid on the wheel guard in the longitudinal direction of the elongated hole. A guide hole is formed in this cover plate, and a cylindrical cover sleeve is fitted into this guide hole so as to be slidable in the direction of advance and retreat of the dresser ram. A coolant scattering prevention cover device comprising: an inner flange that is locked to the locking flange of the cover plate; and an outer flange that comes into contact with the peripheral edge of the guide hole of the cover plate as the dressing ram is lowered.