JPH0325896Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device that prevents grinding powder from a material to be ground from clogging a grindstone during grinding.

[Conventional technology]

2. Description of the Related Art Conventionally, an apparatus having a configuration shown in FIG. 3 has been known as an apparatus for grinding an object to be ground. FIG. 3 is a schematic diagram of a conventional grinding device using a porous grindstone.

In FIG. 3, 1a is a porous grindstone and is fitted into a support jig 2a. The grindstone 1a is a support jig 2
The center of the object 6 to be ground is pressed with a constant force by the pressure of the air sent into the air cylinder 3 through the a. Reference numeral 4 denotes a grinding oil supply pipe whose opening is provided close to the contact area between the object to be ground 6 and the grinding wheel 1a, and the grinding oil is discharged from the grinding oil supply pipe 4 toward the contact area between the object to be ground 6 and the grinding wheel 1a. so that
The so-called grinding powder generated during grinding, such as chips cut from the workpiece 6 or abrasive grains taken from the grinding wheel 1a, is washed away, and the so-called grinding dust is properly penetrated between the workpiece and the grinding wheel to clean the surface of the workpiece. Make sure to grind it smoothly. The object to be ground 6 rotates, and the grindstone 1a is moved in the axial direction of the object to be ground 6 to perform grinding.

Although not shown, other conventional examples include a superfinishing device that performs grinding while vibrating the grinding wheel back and forth in the direction of movement, or a cylindrical porous grinding wheel that is pressed against the object to be ground with a constant load to create a porous 2. Description of the Related Art A cylindrical grinding mirror finishing device is known that performs grinding while rotating a grindstone.

[Problem that the invention attempts to solve]

However, in conventional grinding equipment such as these, a porous grinding wheel with pores is used to prevent the grinding wheel from clogging with grinding powder, or the grinding wheel is moved in the direction of movement. Grinding was carried out by vibrating back and forth or by rotating a cylindrical grindstone, but in either case, if multiple objects to be ground were ground in succession, the grinding wheel would become clogged with grinding powder, causing damage to the objects. Not only does this cause local scratches on the grinding object, but it also takes time to stop the device and clean it in order to remove the grinding powder adhering to the grindstone. Further, since the grinding oil does not spread over the entire surface of the grinding wheel, there are problems such as scratches on the object to be ground due to the parts of the grinding wheel that are not covered with the grinding oil.

[Means for solving problems]

In the present invention, the rear end surface of a porous grinding wheel 1 through which a fluid flows is fitted into the support jig 2 via the packing 7, and the other end surface opposite to the rear end surface of the grinding wheel 1 is brought into contact with the object to be ground 6. Then, the remaining surface of the grindstone 1 is sealed with an organic or inorganic coating material such as epoxy resin to prevent fluid flowing inside from leaking, and a fluid passage 8 provided in the support jig 2 is sealed. By supplying the fluid to the object to be ground 6 through the inside of the grindstone 1, clogging of the grindstone 1 with grinding powder is prevented.

[Effect]

According to the present invention, when grinding the object 6 to be ground, the porous grinding wheel 1 sealed with a coating material is used.
Fluid is constantly ejected towards the object to be ground 6 without leaking out of the grinding wheel along the way through the pores inside the grinding wheel, thereby pushing out the grinding powder clogged in the grinding wheel 1 with the fluid and eliminating clogging of the grinding powder in the grinding wheel 1. This eliminates the need for cleaning the grindstone 1.

〔Example〕

FIGS. 1 and 2 are configuration diagrams showing an embodiment of the present invention. FIG. 1 is a schematic diagram of a grinding device using a porous grindstone, which is an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a porous grindstone, which is fitted into the support jig 2 through a packing 7. A fluid passage 8 passing through the support jig 2 is provided at the fitting portion of the support jig 2, and a fluid supply pipe 5 is connected to the fluid passage 8.
is connected. The grindstone 1 is pressed with a constant force toward the center of the object to be ground 6 through the support jig 2 by the pressure of air sent into the air cylinder 3. Reference numeral 4 denotes a grinding oil supply pipe, the opening of which is provided close to the contact area between the object to be ground 6 and the grinding wheel 1.
The grinding oil is released from the workpiece 6 toward the contact area between the grinding wheel 1 and the so-called so-called grinding oil that is generated during grinding. The grinding powder is washed away and is appropriately penetrated between the object to be ground 6 and the grindstone 1, so that the surface of the object to be ground is ground smoothly. The object to be ground 6 rotates, and the grindstone 1 is fed and moved in the axial direction of the object to be ground 6 to perform grinding. At this time, air or grinding oil is sent to the grindstone 1 via the fluid supply pipe 5 so that it is ejected from the contact surface of the grindstone 1 with the object 6 to be ground.

In FIG. 1, the grinding oil supply pipe 4 is removed,
A configuration may also be adopted in which grinding oil is supplied from the fluid supply pipe 5 to the grindstone 1.

FIG. 2 is a partially enlarged view of the grindstone section used in FIG. 1.

In FIG. 2, the rear end surface of the grindstone 1 is fitted into the support jig 2 via the packing 7, and the front end surface opposite to the rear end surface of the grindstone 1 is used as the surface on which the object to be ground is ground. Then, coat the remaining surface with an organic or inorganic material such as epoxy resin to form a film 9.
is formed to seal the side surface of the grindstone 1. Support jig 2
A fluid passage 8 is provided from a portion connected to the grindstone 1, and the fluid supply pipe 5 is connected to the fluid passage 8.

The material of the coating 9 that covers the side surface of the grinding wheel 1 may be any material as long as it does not allow the fluid passing through the grinding wheel 1 to leak to the side surface and that it will be scraped off as the grinding wheel 1 wears and decreases. It is applicable even if the

FIG. 4 is a diagram showing the change in surface roughness with respect to the number of consecutively processed pieces. In Fig. 4, (a) shows the case where the object to be ground is continuously ground with a conventional grinding device,
As the number of grinding wheels increases, the finished surface of the object to be ground becomes rougher, and cleaning of the grindstone becomes necessary. On the other hand, (b) shows the case where the object to be ground is continuously ground using the grinding device of the embodiment of the present invention. The surface will not become extremely rough after finishing.

[Effect of idea]

This invention coats the side surface of a porous grinding wheel, and when grinding an object, the fluid passes through the pores in the grinding wheel and is always directed towards the object without leaking to the side surface of the grinding wheel. Prevents grinding powder from clogging, eliminates the need to clean the grinding wheel,
The effect of preventing scratches on the surface to be ground can be obtained. Furthermore, since the fluid does not leak to the side surface of the grinding wheel, the fluid can be ejected efficiently, and the fluid supply pressure can be lowered compared to conventional ones. These provide the effect of increasing work efficiency. In addition, since the coating material decreases as the grindstone wears, there is no fear that the coating material will scratch the surface of the object to be ground.

Further, although the present invention has been described with reference to an example using a square grindstone, it is applicable to any type of grinding device that uses a grindstone.

[Brief explanation of the drawing]

Figure 1 is a schematic configuration diagram of a grinding device using a porous grinding wheel that is an embodiment of the present invention, Figure 2 is a partially enlarged view of the grinding wheel used in Figure 1, and Figure 3 is a grinding device using a conventional porous grinding wheel. FIG. 4 is a schematic configuration diagram of the grinding device, and shows a change in surface roughness with respect to the number of consecutively processed pieces. 1, 1a... Grindstone, 2, 2a... Support jig, 3
...Air cylinder, 4...Grinding oil supply pipe, 5...
...fluid supply pipe, 6... object to be ground, 7... packing, 8... fluid passage, 9... film.

Claims (1)

[Scope of utility model registration request] In a device that performs grinding by rotating a cylindrical workpiece around its axis and bringing a grindstone into contact with the surface of the workpiece, the rear end surface of the grindstone is porous through which fluid can flow. The grinding wheel is fitted into a support jig so that the other end surface opposite to the rear end surface of the grinding wheel comes into contact with the object to be ground, and the remaining surface of the grinding wheel is sealed with a coating material to prevent fluid flowing inside from leaking. A clogging prevention device for a grindstone, characterized in that fluid is supplied from a fluid passage provided in a support jig to an object to be ground through holes in the grindstone.