JPS6288570A - Grinding wheel - Google Patents

Abstract

PURPOSE:To carry out securely the supply of grinding liquid and the removal of chips to and from a grinding position by providing an annular grinding liquid reservoir concentric with a grinding wheel body and a plurality of liquid introducing holes communicating to grooves provided on a grinding wheel working surface from said reservoir. CONSTITUTION:A plurality of grooves 2 are provided at proper intervals on the grinding wheel working surface of the peripheral surface of a grinding wheel body 1. These grooves facilitate the supply of grinding liquid and the removal of chips. Also, the grinding wheel body 1 is provided on the side surface with an annular grinding liquid reservoir 3 concentric with the grinding wheel body. Further, liquid intriducing holes 5 are provided which communicate to a plurality of grooves 2 on the grinding wheel working surface from the grinding liquid reservoir 3. As a result, since the grinding liquid poured into said reservoir 3 from the side surface of grinding wheel is intruded directly between the contact surface (grinding points) of the grinding wheel and a workpiece, the supply of grinding liquid and the removal of chips can be sequrely carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a grinding wheel, particularly a grinding wheel effective for deep groove machining by cleave-feed grinding.

[Conventional technology] Deep groove machining by creep feed grinding requires a large grindstone cutting depth and a long grindstone contact arc length between workpieces.

Due to the high grinding resistance, a large amount of grinding heat is generated, and it is difficult for the grinding fluid to enter the grinding point, causing thermal damage such as grinding burn on the workpiece and thermal expansion. Blade wear and fracture.

This causes the bonding agent of the grinding wheel to break, and there is no place for the chips to escape, making the grinding wheel easily clogged.As a result, the finished surface quality and dimensional accuracy of the workpiece deteriorate significantly, and the grinding performance of the grinding wheel rapidly deteriorates.

In order to deal with this kind of problem, it has been known to supply grinding fluid to the grinding action position of the grindstone through the grinding wheel rotating shaft and flange, but in this case, the equipment becomes large-scale. In addition, there is a problem that it cannot be applied to existing grinding machines.

[Problems to be Solved by the Invention] The present invention is a combination of countermeasures for the above-mentioned defects of conventional grinding wheels, and its purpose is to solve the problems without making any changes to the rotation axis of the grinding wheel. , facilitates the supply of grinding fluid to the grinding position, the removal of chips, and adjusts the cutting edge spacing.
The object of the present invention is to obtain a grinding wheel that enables effective grinding.

[Means for Solving the Problems] In order to achieve the above object, the grinding wheel of the present invention has a large number of grooves on the working surface of the grinding wheel around the grinding wheel body, and a grinding fluid supply pipe on the side surface of the grinding wheel body. A grinding fluid reservoir concentric with the grinding wheel body is provided for collecting the grinding fluid supplied from the grinding wheel body, and liquid guide holes are provided that lead from this grinding fluid reservoir into a number of grooves on the working surface of the grinding wheel. That is.

[Function] When performing grinding with the above-mentioned grinding wheel, if the grinding wheel body is rotated while pouring the grinding fluid from the grinding fluid supply pipe into the grinding fluid pool, the centrifugal force accompanying the rotation will force the grinding fluid into the grinding fluid pool. The liquid is discharged from the liquid into the groove on the circumferential surface of the grinding wheel through the guide hole, enters the grinding position where the grinding wheel and workpiece come into contact, cools the grinding wheel and the workpiece, and removes chips.

During such grinding, the grinding fluid is supplied from the grinding fluid reservoir on the side of the grinding wheel through the grinding wheel main body, so this grinding wheel can be used by being attached to an existing grinding machine.

[Example] Figures 1 to 3 show examples of the grinding wheel according to the present invention. In this grinding wheel, a large number of grooves 2 are formed on the working surface of the grinding wheel, which is the circumferential surface of the grinding wheel main body l. ,2. ... are provided at appropriate intervals. Grooves on this grindstone working surface 2.2.・・・
This facilitates the supply of grinding fluid and the removal of chips, and also adjusts the spacing between the cutting edges to ensure effective grinding. For example, it is preferable that the groove 12a shown in FIG.
They can also be formed in a crossed state, as shown in FIG.

Further, the grindstone body 1 is provided with an annular grinding fluid reservoir 3 concentric with the grindstone body on its side surface.

This grinding fluid reservoir 3 is for temporarily holding the grinding fluid supplied from a grinding fluid supply pipe 4 provided separately from the grinding wheel. Alternatively, other members for forming the grinding fluid reservoir 3 may be attached to the side surface of the grindstone main body 1. The grindstone body 1 is provided with liquid guide holes 5 that communicate from the grinding liquid reservoir 3 to the numerous grooves 2 on the grindstone working surface.

The grinding fluid poured into the grinding fluid reservoir 3 from the side of the grinding wheel is configured to directly enter the contact surface (grinding point) between the grinding wheel and the workpiece.

In addition, in the figure, W indicates a workpiece.

In the grinding wheel having the above configuration, when the grinding wheel body l is rotated while pouring the grinding fluid from the grinding fluid supply pipe 4 into the grinding fluid reservoir 3, the centrifugal force accompanying the rotation forces the grinding fluid into the grinding fluid reservoir 3. The liquid is discharged from the liquid into the groove 2 on the circumferential surface of the grinding wheel through the introducing hole 5, and enters the grinding position where the grinding wheel and the workpiece come into contact, cooling the grinding wheel and the workpiece, and removing chips.

During such grinding, the grinding fluid is supplied from the grinding fluid reservoir 3 on the side of the grinding wheel to the grinding action position through the grinding wheel body, without being supplied through a part of the grinding machine such as the inside of the grinding wheel's rotating shaft. This grinding wheel can be used by attaching it to an existing grinding machine.

FIG. 5 shows another embodiment with a different door shape. In the figure, 21 is the grindstone body, 22 is a groove on the circumference of the grindstone, 23 is a grinding liquid reservoir, and 25 is a liquid guide hole. .

The above-mentioned grinding wheel can be manufactured, for example, in a first step. That is, first, groove portions that will become the many grooves 2.12a, 12b, or 22 on the grindstone working surface described above are cut in advance on the outer circumferential cylindrical surface of a disc made of metal or the like that will become the grindstone hub. The groove pattern needs to be designed separately so that the groove ratio and groove distribution can be set appropriately. Next, a grinding wheel liquid reservoir is created on the side surface of the grinding wheel hub, and furthermore, this grinding liquid reservoir and the groove portion are communicated through a liquid guide hole. After that, CBN, diamond, and other abrasives (abrasive grains) are applied.
The grinding abrasive grain layer is fixed to the surface of the hub cylindrical surface other than the grooves by fixing it to the outer circumferential cylindrical surface of the grindstone hub with an electric M or the like, or by fixing or pasting a piece of the grindstone to the outer circumferential cylindrical surface. When the grindstone hub is constructed of a metal disc in this manner, the grinding wheel can be manufactured relatively easily.

[Effects of the Invention] As detailed above, according to the grinding wheel of the present invention, it is possible not only to easily supply the grinding fluid to the grinding position and remove chips, but also to reduce the gap between the cutting blades. It is possible to perform effective grinding by adjusting the iA, and it is sufficient to process only the grindstone hub, etc., without making any changes to the rotation axis of the grindstone.

Therefore, it has excellent features such as being able to be used by attaching it to an existing grinding machine.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the grinding wheel according to the present invention;
Figure 2 is a partial side view, Figure 3 is a front view showing the lower half in cross section, Figures 4A and B are partial front views illustrating the groove shape on the outer circumferential surface of the grindstone, and Figure 5 is another embodiment. It is a front view with the lower half of the example in cross section. 1.21--Whetstone body, 2.12a, 12b, 22*
e groove. 3.23...Grinding fluid pool. 4 pa・Grinding fluid supply pipe, 5.25・・Liquid guide hole. Figure 4■ Figure 5

Claims (1)

[Claims] 1. A large number of grooves are provided on the working surface of the grinding wheel around the grinding wheel body, and an annular grinding fluid reservoir concentric with the grinding wheel body is provided on the side surface of the grinding wheel body to collect the grinding fluid supplied from the grinding fluid supply pipe. 1. A grinding wheel characterized in that a liquid guide hole is provided which communicates from this grinding liquid reservoir into a large number of grooves on the working surface of the grinding wheel.