JPH11138434A - Scatter preventive method for grinding fluid of centerless grinder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent scattering of grinding fluid to the outside with certainty by covering peripheries and upper sides of a grinding wheel and a regulating wheel of a centerless grinder with a cover, which grinder grinds a work while supplying the grinding fluid, opening and closing a hole for passing a finger holding the work by means of a shutter plate. SOLUTION: A grinding wheel 1, a regulating wheel 2, and peripheral members of a grinder are covered with one cover 11. A rectangular hole 12 through which a finger 5 holding a work 5 can pass is formed on an upper surface of the cover 11, at its portion faced to a work supporter 3. A pair of guide plates 13 are arranged on both sides of the hole 12 in parallel. A shutter plate 14 is arranged between the guide plates 13 and 13 for opening and closing the hole 12. The hole 12 is opened or closed by reciprocating the shutter plate 14 through contraction/extension of an air cylinder 15. A mist sucking tube 16 is connected to a left side surface of the cover 11, which tube is connected to a cyclon mist removal device.

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 splashes of grinding fluid from splashing outside when grinding a round bar-shaped workpiece with a centerless grinding machine.

[0002]

2. Description of the Related Art FIG. 2 schematically shows a main part of a grinding machine for grinding a shaft portion of a work (hereinafter simply referred to as a work) such as an engine valve.

[0003] (1) is a grinding wheel that rotates in the direction of the arrow, (2)
Is an adjusting wheel which is close to the outer peripheral surface of the grinding wheel (1) and rotates in the direction of the arrow around an axis parallel to the axis thereof, and (3) is a work support. The grinding wheel (1) and the adjusting wheel (2) can be adjusted to the left and right positions (hereinafter, the direction is referred to in the drawing)
The support 3 can be adjusted vertically.

[0004] Above the peripheral surface of the adjusting wheel (2), there is a supply port at the lower end.
A grinding fluid supply pipe (4) with (4a) facing directly above the support (3) is bent, and the supply port (4a) is widened to the same width as the adjusting wheel (2). (5) is a finger for supplying the work (6).

Most of the grinding wheel (1) and the adjusting wheel (2) are covered by covers (7) and (8), respectively, and both covers (7) and (8)
Are open and separated from each other.

In the above-mentioned centerless grinding machine, the work (6)
Is gripped by a finger (5) and placed on a support (3). A grinding wheel is supplied while a grinding fluid (9) is supplied from a grinding fluid supply pipe (4).
By rotating (1) and the adjusting wheel (2), the work (6) is ground.

[0007]

However, in the above-described centerless grinding machine, the grinding fluid supplied to the grinding portion of the work (6) is used to grind the work (6) with the grinding wheel (1) or the adjusting wheel.
Mist or droplets are formed by the rotating action of (2), which scatter outside from between the two covers (7) and (8), thereby deteriorating the working environment and contaminating the surroundings. Further, the used grinding fluid is collected and reused. However, since the scattered amount is large, there is a problem that the recovery rate is reduced and the consumption of the grinding fluid is increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problem, and has as its object to provide an apparatus capable of almost completely preventing the grinding fluid from scattering to the outside.

[0009]

According to the present invention, the above object is to provide a rod-shaped work supported between a grinding wheel and an adjusting wheel,
In a centerless grinding machine that grinds while supplying a grinding fluid, the periphery and the upper side of the grinding wheel and the adjustment wheel are covered with a single cover, and the upper and lower surfaces of the cover are provided with opening / closing holes for fingers that grip the work. This problem can be solved by opening and closing the access hole by a shutter plate connected to the reciprocating drive means.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a centerless grinding machine to which the present invention is applied. Omitted.

In the centerless grinding machine to which the present invention is applied, the periphery and the upper part of the grinding wheel (1), the adjusting wheel (2), and the nearby members attached thereto are covered by one cover (11). ing.

Work support on the upper surface of the cover (11)
A rectangular entrance / exit hole (12) through which a finger (5) gripping a work (6) can pass through is cut out at a portion facing (3).
On both sides thereof, a pair of guide plates (13) which are parallel to each other in the left-right direction are provided.

A shutter plate (14) capable of opening and closing the access hole (12) with a margin is loosely fitted between the two guide plates (13), and an upward piece (14a) is bent at the left end. .

The shutter plate (14) on the upper surface of the cover (11)
An air cylinder (15) facing right is mounted on the left of
The tip of the piston rod (15a) is connected to the upward piece (14a) of the shutter plate (14). This allows the shutter plate
(14) is moved left and right by the expansion and contraction movement of the air cylinder (15) to open and close the access hole (12).

A mist suction pipe (1) is provided on the left side of the cover (11).
6) is connected, and its tip is connected to a cyclone type mist removal device (not shown).

The work held by the finger (5)
(6) is replaced with the access hole (12) opened by the air cylinder (15).
Through the work support (3), and then through the access hole (12)
And work (6) is ground by grinding wheel (1),
Since the surroundings of the grinding wheel (1) and the adjusting wheel (2) are almost completely closed by the cover (11), the mist generated during grinding does not scatter around, and the mist suction pipe (16) It is sucked and collected and removed.

[0017]

According to the grinding machine to which the present invention is applied, since the periphery and the upper part of the grinding wheel and the adjusting wheel are almost completely covered, splashes and mist of the grinding fluid generated at the time of grinding the work are prevented. It does not scatter and contaminate the surrounding floor or drift in the air to degrade the working environment.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a centerless grinding machine to which the present invention is applied.

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

[Explanation of symbols]

 (1) Grinding wheel (2) Adjustment wheel (3) Work support (4) Grinding fluid supply pipe (4a) Supply port (5) Finger (6) Work (9) Grinding fluid (10) Splash (11) Cover ( 12) Access hole (13) Guide plate (14) Shutter plate (14a) Upward piece (15) Air cylinder (15a) Piston rod (16) Mist suction pipe

Claims (1)

[Claims] 1. A centerless grinding machine that grinds a rod-shaped work supported between a grinding wheel and an adjusting wheel while supplying a grinding liquid, wherein a single cover covers the periphery and the upper side of the grinding wheel and the adjusting wheel. The centerless grinding machine is characterized in that, at the same time as covering, an access hole of a finger holding the work is opened on the upper surface of the cover, and the access hole is opened and closed by a shutter plate connected to a reciprocating drive means. Grinding fluid scattering prevention device.