JPH08216022A - Grinding fluid splash preventing device for use with centerless grinder - Google Patents

Abstract

PURPOSE: To prevent grinding fluid from splashing around and to enable the splashing grinding fluid to be collected effectively by mounting downwardly tilted, flexible shielding plates on the upper portion of a grinding fluid supply pipe when grinding the shaft part of work while supplying the grinding fluid. CONSTITUTION: In a centerless grinder designed to grind the shaft part 3a of work 3, a cover 10 for covering the upper portion of a grinding wheel 1 is secured to a cover 4, and a rear plate 12 covering part of the grinding wheel 1 and part of the rear of a regulating wheel 2 is secured to the rear face of a cover 5. Three shielding plates 13 are secured to the upper surface of a grinding fluid supply pipe 6. Each shielding plate 13 is tilted downwards with its lower end extended above the work 3, its longitudinal width being equal to or slightly longer than the width of the regulating wheel 2. Since the shielding plates 13 have flexibility and are elastically deformed temporarily, during the movements of the work 3 and a work gripping means 8 the shielding plates 13 permit these movements, and during machining surely prevent grinding fluid from splashing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preventing scattering of a grinding fluid in a centerless grinding machine, which prevents the grinding fluid used when grinding a shaft portion of a work from scattering around.

[0002]

2. Description of the Related Art Conventionally, as a centerless grinding machine provided with a grinding fluid supply pipe, there is one shown in FIG. The directions (front, rear, left and right) in the following description are defined with reference to FIG.
(1) is a grinding wheel that rotates downward in the work processing section, and an adjusting wheel (2) that also rotates upward in the work processing section is provided at a position facing the grinding wheel (1). . The grinding wheel (1) and the adjusting wheel (2) can move to the left and right, and the engine valve (hereinafter simply referred to as "workpiece")
When the shaft portion (3a) of (3) is ground, the relative distance between the facing surfaces thereof is set to be slightly smaller than the diameter of the shaft portion (3a) of the work (3).

Reference numerals (4) and (5) respectively denote covers for covering the grinding wheel (1) and the adjusting wheel (2), and a curve is downwardly provided on the front surface of the cover (5) just above the adjusting wheel (2). Grinding fluid supply pipe
(6) is attached, and an opening (6a) facing the width direction of the adjusting wheel (2) and having substantially the same width as that of the adjusting wheel (2) is formed at its lower end. (7) is a blade for supporting the work (3).

Work holding means (8) movable up and down
The workpiece (3) placed on the upper surface of the blade (7)
Is held by the grinding wheel (1) and the adjusting wheel (2), and its shaft portion (3a) is ground by the grinding wheel (1). At this time, by supplying the grinding liquid (9) from the grinding liquid supply pipe (6) toward the shaft portion (3a) of the work (3), the shaft portion (3a) of the work (3) is processed and burned. To prevent the occurrence of.

[0005]

In the above centerless grinding machine, the grinding fluid supplied toward the shaft portion (3a) of the work (3) is rotated by the adjusting wheel (2), It becomes a mist or droplets, and mainly scatters to the right above the center of the work (3), that is, above the adjusting wheel (2). Therefore, the scattered grinding fluid (9) adheres to the base on which the adjusting wheel (2) and the grinding wheel (1) are placed, or to the equipment and the floor surface around them, which results in a work environment. Was aggravating or corroding the metal.

Further, it is necessary to frequently clean the grinding fluid scattered around, which is troublesome and wastes a wasteful working time. Further, the used grinding fluid is recovered and reused. However, if the amount of scattering is large as described above, the amount of recovery decreases, so that the frequency of replenishment of new grinding fluid becomes large.

The present invention has been made in view of the above-mentioned problems, and it is intended to prevent the grinding fluid from scattering to the surroundings and to effectively collect the scattered grinding fluid. It is an object of the present invention to provide a grinding fluid scattering prevention device for a grinding machine.

[0008]

According to the present invention, the above-mentioned problems are solved by holding the shaft portion of the work between the facing surfaces of the grinding wheel that rotates downward and the adjusting wheel that rotates upward in the work processing section. In a centerless grinder in which a grinding fluid is supplied by a grinding fluid supply pipe having a downward opening facing the width direction of the adjustment wheel provided above the adjustment wheel to grind the shaft of the workpiece. By attaching a downwardly inclined flexible shielding plate having a width at least equivalent to that of the adjusting wheel and having a lower end portion extending above the shaft portion of the work to the upper portion of the grinding fluid supply pipe, Will be resolved.

[0009]

The grinding fluid splashed upward by the adjusting wheel rotating upward hits the lower surface of the shield plate and is collected, so that it is prevented from splashing above it. The grinding fluid adhering to the lower surface of the shielding plate flows to the lower end of the shielding plate,
From there, it is dripped downward, supplied again to the shaft of the work, and then recovered.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A centerless grinding machine to which an embodiment of the present invention is applied will be described below with reference to FIG. The same members as those in the conventional example are denoted by the same reference numerals, detailed description thereof will be omitted, and the direction will be defined based on FIG. 1 as in the conventional case.

A cover (10) for covering the upper part of the grinding wheel (1) is fixed to the right side surface of the cover (4) by a bolt (11),
The grinding fluid adhering to the surface of the grinding wheel (1) jumps out tangentially from the upper part of the grinding wheel (1), and the grinding fluid supply pipe on the opposite surface side.
It is prevented from adhering to (6) and the cover (5).

On the rear surface of the cover (5), there is a rear plate (1) which covers a part of the rear portion of the grinding wheel (1) and the adjusting wheel (2) in the work processing section.
2) is fixed, and grinding fluid (9) is placed behind the adjusting wheel (2).
Are prevented from scattering. Although illustration is omitted, a front plate similar to the above is also provided in front of the workpiece processing section to prevent the grinding liquid (9) from scattering forward like the rear plate (12). There is.

Reference numeral (13) designates three shield plates which are fixed to the upper surface of the grinding fluid supply pipe (6) at their upper ends at predetermined intervals, and are made of a flexible material such as plastic. Is used. Each shielding plate (13) is inclined downward and has its lower end extending above the work (3), and its width in the front-rear direction is equal to the width of the adjusting vehicle (2), or It is slightly longer than that. In addition, in this embodiment, the number of the shielding plates 13 is three, but the number may be one.

Work gripping means above the blade (7)
When the work (8) moves downward to place the work (3) on the blade (7), the work (3) and the work holding means are held.
Although the (8) contacts the shield plate (13), the shield plate (13) is flexible and temporarily elastically deformed, so that the work (3) and the work gripping means (8) are moved. It will not hinder the movement of the creatures and will return to their original state immediately after their movement.

Due to the upward rotating action of the adjusting wheel (2), the mist or splashing grinding fluid (9) mainly scattered in the upper right direction.
Are collected by hitting the lower surface of the shielding plate (13). Shield (1
Since 3) is inclined downward, the grinding fluid (9) attached to the lower surface of the shielding plate (13) flows down to the lower end side of the shielding plate (13).
The grinding fluid (9) dripping downward from the lower end of the shielding plate (13) is supplied again to the shaft portion (3a) of the work (3) and then collected and reused.

On the left side of the center of the work (3), a downward airflow is generated by the downward rotational force of the grinding wheel (1), so the amount of the grinding fluid (9) scattered as a mist is small. . However, in rare cases, the mist-like grinding fluid (9) may be scattered on the side of the grinding wheel (1) as well, so that the cover plate (10) covers the cover plate (13) as shown by the phantom line in the figure. If it is provided, the effect of preventing the scattering of the grinding fluid is further enhanced.

[0017]

As described above, according to the present invention, the grinding fluid scattered toward the upper side of the adjusting wheel is collected by the shielding plate, so that it cannot be further scattered upward. In addition, the grinding fluid adhering to the lower surface of the shielding plate flows down to the lower end side of the shielding plate, drops downward from there, is supplied to the shaft of the work again, then is collected and reused. You can

[Brief description of drawings]

FIG. 1 is a front view of a main part of a centerless grinding machine to which the present invention has been applied.

FIG. 2 is a front view of a main part of a conventional centerless grinding machine.

[Explanation of symbols]

 (1) Grinding wheel (2) Adjusting wheel (3) Work (engine valve) (3a) Shaft (4) (5) Cover (6) Grinding liquid supply pipe (6a) Opening (7) Blade (8) Work Gripping means (9) Grinding liquid (10) Cover (11) Bolt (12) Rear plate (13) Blocking plate

Claims (1)

[Claims] 1. An adjusting wheel provided above the adjusting wheel, wherein a shaft portion of the workpiece is held between facing surfaces of a grinding wheel that rotates downward and an adjusting wheel that rotates upward in a workpiece processing section. In a centerless grinding machine configured to supply a grinding fluid by a grinding fluid supply pipe having a downward opening facing the width direction to grind a shaft portion of a work, at least having a width equal to that of the adjusting wheel, Preventing dispersion of grinding fluid in a centerless grinding machine, characterized in that a flexible shielding plate having a lower end extending upwardly above the shaft of the work is attached to the upper portion of the grinding fluid supply pipe. apparatus.