JPS6239177A - Feed device for grinding liquid - Google Patents

Abstract

PURPOSE:Pressurize grinding liquid from a supply source and enable the effective feed thereof to a grinding point by leading said liquid to a plurality of outlets open to a grinder processing part via an enclosed delivery passage. CONSTITUTION:A grinding liquid feed plate 10 adhering to the inner bottom of a cup-shaped grinder 2 is fixed to the lower end of a grinder spindle 1. Said plate 10 is radially engraved with a plurality of grooves forming delivery passages 11. Grinding liquid as pressurized at a supply source is effectively fed toward a grinding part via a delivery port 11A open to a grinder processing part 2A.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a grinding fluid supply device for a vertical axis surface grinder.

[Background technology and its problems]

Conventionally, grinding fluid was supplied to the cup-shaped grinding wheel of a vertical axis surface grinder using the equipment shown in Figures 5 and 6, but it was not possible to sufficiently supply the grinding fluid to the surrounding surface. Ta.

In the method shown in FIG. 5, 1 is a grindstone shaft that supports a cup-shaped grindstone 2, 2A is a grindstone processing section consisting of a ring-shaped grindstone fixed to the lower surface of the cup-shaped grindstone head of the cup-shaped grindstone 2,
Grinding is performed on the workpiece 3. In this case, a through hole IA is bored in the axial direction of the grindstone shaft 1, and a nozzle 4 having a grinding fluid discharge hole 4A is fixed to the shaft end of the grindstone shaft weight.

Therefore, the grinding fluid is intended to be discharged from the outlet 4A of the nozzle 4 from a supply source (not shown) through the through hole IA, and to be supplied to the contact surface between the grindstone processing section 2A and the workpiece 3. However, since the grinding fluid is supplied to the grinding point only by the centrifugal force of the grinding fluid, and the position of the discharge port 4A is far from the grinding point, the grinding fluid cannot be effectively supplied to the grinding point. There were drawbacks.

Further, in the method shown in FIG. 6, a guide plate is provided on the bottom surface of the nozzle part.
This shows a method in which the grinding fluid is guided to a position close to the grinding point by fixing the grinding fluid. The same reference numerals and names as in FIG. 5 are used for all the symbols shown in FIG. 6, except for the guide plate 5. In this case as well, the supply of grinding fluid depends on centrifugal force, and since the discharge port position and the grinding point are far apart, even if the pressure from the grinding fluid supply source is increased, the grinding fluid will not reach the grinding point. The drawback was that there was not enough supply.

[Purpose of the invention]

An object of the present invention is to effectively supply grinding fluid to a grinding point by applying discharge pressure from a grinding fluid supply source in addition to centrifugal force.

[Means and effects for solving the problems] The present invention has the following features:
A grinding fluid supply plate is fixed to the lower end of the grinding wheel shaft and is in close contact with the inner bottom surface of the cup grinding wheel. This is a grinding fluid supply device that supplies grinding fluid to a grinding point from a discharge port opened near a processing section.

As a result, the grinding fluid can be effectively supplied to the grinding point using the discharge pressure from the grinding fluid supply source and the centrifugal force accompanying the rotation of the cup-shaped grindstone.

〔Example〕

FIG. 1 is a sectional view showing a first embodiment of the grinding fluid supply device of the present invention. The present invention will be explained below using the same figure.

Since the numbers and names other than those related to the grinding fluid supply plate 10 are the same as those in FIG. 5, explanations thereof will be omitted. The grinding fluid supply plate 10 is connected to the lower end of the grindstone shaft 1 via a threaded portion 10A, and is fixed to the cup-shaped grindstone 2 via a bolt 1OB. A plurality of discharge passages 11 are radially bored in the plate 10 on the grindstone 2 side, and the grinding fluid is discharged from the discharge ports 11A at positions close to the eight grinding points.

Therefore, the grinding fluid supplied from a grinding fluid supply source (not shown) passes through the through hole IA of the grinding wheel shaft 1, passes through the radial discharge path 11 in the grinding fluid supply plate 10, and is discharged from the discharge port 11A.

Therefore, the grinding fluid can be effectively discharged to the grinding point. In addition, when providing the discharge passage 11, no processing was done on the cup-shaped grindstone 2, which would have to be replaced sequentially due to wear of the grindstone processing section 2A, but processing was performed on the grinding fluid supply plate 10 side, which is continuously used together with the grindstone shaft l. from,
The discharge passage 11 only needs to be processed once, and processing costs can be kept low.

The sectional view shown in FIG. 2 is a second embodiment showing the vicinity of the grinding point in FIG. 1, and FIG. 3 is a bottom view of FIG. 2. In these figures, a discharge passage 11 consisting of a plurality of radially carved grooves is provided on the upper surface of a grinding fluid supply plate 10, and the upper surface is covered with a cup-shaped grindstone 2. At this time, the discharge port 11A is provided on the grindstone head side of the cup-shaped grindstone 2.

Note that if the discharge path 11 is formed into a spiral shape, the grinding fluid can be discharged effectively. Further, in this embodiment, the discharge port 11A may also be provided on the plate 10 side.

The sectional view shown in Fig. 4 is the third section showing the vicinity of the grinding point in Fig. 1.
This is an example. In this example, a recess 10A is provided in the center of the upper surface of the grinding fluid supply plate 10, the upper surface of the plate 10 is closely fixed to the cup-shaped grindstone 2, and a discharge path is formed by holes formed in the plate 10 at a radial inclination. An example is shown in which a plurality of 11 and discharge ports 11A are provided facing two people in the grindstone processing section.

〔Effect of the invention〕

As described above, according to the present invention, the grinding fluid is conducted to the plurality of discharge ports opened in the vicinity of the grindstone processing section through the discharge passage which is a closed passage. Therefore, when supplying the abrasive fluid to the grinding point, the grinding fluid can be effectively supplied by applying the pressure of the supply source to the grinding fluid in addition to the centrifugal force caused by the rotation of the grinding wheel.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a first embodiment of a grinding fluid supply device according to the present invention, FIGS. 2 and 3 are sectional views and bottom views of main parts, and FIG. 4 is a sectional view of a main part showing a third embodiment of the present invention, and FIGS. 5 and 6 are sectional views showing different examples of a conventional grinding fluid supply device. DESCRIPTION OF SYMBOLS 1... Grinding wheel shaft, IA... Through hole, 2... Cup-shaped grindstone, 2 people... Grinding wheel processing section, 10... Grinding fluid supply plate, 10A... Recessed part, 11... Discharge path, IIA
...Discharge port.

Claims (5)

[Claims] (1) In a grinding fluid supply device for a vertical-axis surface grinder using a cup-shaped grindstone, a grinding wheel shaft that supports the cup-shaped grinding stone at the lower end of the shaft and a through hole drilled in the axial direction of the grinding wheel shaft, a grinding fluid supply plate fixed to the cup-shaped grindstone at the lower end of the through-hole and provided with a plurality of radial discharge passages connected to the through-hole; A grinding fluid supply device configured with an opened discharge port. (2) The grinding fluid supply device according to claim 1, wherein the discharge path is configured to conduct through the inside of the grinding fluid supply plate. (3) The grinding fluid supply device according to claim 1, wherein the discharge passage is radially carved on the upper surface of the grinding fluid supply plate. (4) The grinding fluid supply device according to claim 3, wherein the discharge path has a spiral shape. (5) The grinding fluid supply device according to claim 1, characterized in that a recess is provided on the upper surface of the grinding fluid supply plate, and a radial discharge path is bored from the recess toward the grinding wheel.