JP2000117143A - Separation apparatus of cut powder and cutting solution of magnet separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively separate a cutting soln. from the cut powder attracted to a magnet drum regardless of the size or shape of the cut powder in a magnet separator used in the removal of the cut powder (ground iron pieces) contained in the cutting soln. (coolant). SOLUTION: The leading end edge 5a of a separation blade 5 is brought into contact with a magnet drum 3 at the position almost just above the center O of the magnet drum 3 and the separation blade 5 is attached in a state upwardly inclined at a predetermined angle θwith respect to the tangential direction (almost horizontal direction) P-Q passing the contact point P in a side view. By this constitution, the cut powder 9 attracted to the magnet drum 3 is scraped off on the separation blade 5 and the cutting soln. is dammed up by the contact part of the leading end edge 5a of the separation blade 5 and the magnet drum 3 to separate the cut powder and the cutting soln.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for separating chips and cutting fluid in a magnet separator used for removing chips contained in cutting fluid (coolant) in cutting or grinding. Things.

[0002]

2. Description of the Related Art For example, in the grinding of an iron material or the like, a magnet separator has conventionally been used for removing chips (ground iron pieces) contained in a cutting fluid (coolant).

Conventionally used magnet separators include a magnet drum for adsorbing chips containing cutting fluid (coolant), as disclosed in, for example, Japanese Patent Application Laid-Open No. 58-174211, and the magnet separator. Cutting fluid (coolant) by pressing chips adsorbed on the drum
And a rubber squeezing roller that squeezes and removes the cutting fluid from the magnet drum by a scraper after the cutting fluid is squeezed and removed by the squeezing roller.

[0004]

The above-mentioned conventional magnet separator is considerably effective in removing relatively fine ground chips and the like contained in the cutting fluid. Unlike grinding chips, the shape of the chips is ejected in the form of relatively elongated needles, so press the rubber squeeze roller against the magnet drum that has absorbed such elongated needle-shaped chips. When squeezed, the chips pierce the rubber squeeze roller, which reduces the squeezing function and increases the maintenance cost of the roller.
And the replenishment amount of the cutting fluid increases.

In order to protect the squeeze roller and prevent the above-mentioned problems from occurring, a special magnet roller is required, which causes a problem that the cost of the entire apparatus increases.

An object of the present invention is to solve the above-mentioned problems of the magnet separator.

[0007]

According to the present invention, the conventional rubber squeezing roller is eliminated, and the separation blade is brought into contact with the magnet drum at a position where the leading edge of the separation blade is almost directly above the center of the magnet drum. And scraping the chips adsorbed on the magnet drum onto the separation blade,
By cutting off the cutting fluid at the contact portion between the leading edge of the separation blade and the magnet drum, the cutting fluid and the cutting fluid are separated.

[0008] Thus, the separation ability of the cutting fluid does not change depending on the size and shape of the cutting chips, and even if foreign matter or chips are mixed in the cutting fluid, the cutting fluids can be prevented without any problem. It is possible to maintain the effective cutting fluid separation action.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic perspective view showing an example of a magnet separator according to the present invention. Reference numeral 1 denotes a tank body, for example, a cutting fluid (coolant) containing cutting chips from a processing machine body such as a gear shaving machine. ) Is the cutting fluid inlet 2
The fluid flows into the tank main body 1. 8
Is a cutting fluid outlet, and the cutting fluid flowing out of the cutting fluid outlet 8 is returned to a coolant tank (not shown).

Reference numeral 3 denotes a magnet drum rotatably mounted in the tank main body 1. Reference numeral 4 denotes a driving means 4 such as a drive motor.
Are driven to rotate.

Reference numeral 5 denotes a separation blade made of a metal plate such as an iron plate. As shown in FIG. 2, the leading edge 5a of the separation blade 5 is positioned almost directly above the center O of the magnet drum 3. And a tangent line (almost horizontal direction) P passing through the contact point (contact point P) in a side view.
The structure is such that the separation blade 5 is inclined upward so as to have a predetermined angle θ with respect to −Q. The other end 5b of the separation blade 5 is connected to a separation discharge plate 6 inclined downward. 7 is a chip receiver.

In the above description, a cutting fluid (coolant) containing cutting chips is supplied from the machining machine main body into the tank main body 1 through the cutting fluid inflow port 2, and when the magnet drum 3 rotates therein, the magnet drum 3 Chips 9 in cutting fluid
The adsorbed chips 9 move upward with the rotation of the magnet drum 3 in a state containing the cutting fluid. When the chips 9 reach almost right above the center O of the magnet drum 3, the chips 9 are removed. The chips 9 are scraped off on the separation blade 5 against the leading edge 5 a of the separation blade 5, and the chips 9 rise on the separation blade 5, and the other end portion 5 b It is extruded little by little in the direction, falls from the separation / discharge plate 6, and is discharged and collected in the chip receiver 7.

As described above, the weight of the swarf 9 scraped off and raised on the separation blade 5 makes the separation blade 5
As the contact pressure and the contact area between the leading edge 5a of the cutting blade 9 and the magnet drum 3 increase, the cutting fluid contained in the chips 9 is effectively dammed at the leading edge 5a of the separation blade 5, and As shown by the arrow 10 of 2, the gas flows downward on the magnet drum 3 and is returned into the tank body 1. Further, while the chip 9 rises on the separation blade 5 and is extruded little by little in the direction of the other end 5b, a small amount of cutting fluid remaining on the chip 9 is separated by the inclination angle θ of the separation blade 5 and separated. Flows down onto the magnet drum 3,
It is returned into the tank body 1 as shown by the arrow 10.

In this manner, the cutting fluid in the tank body 1 is purified by removing the chips, and then is returned to the coolant tank (not shown) from the cutting fluid outlet 8, and is repeatedly used for cutting. .

In the above description, the length L and the inclination angle θ of the separation blade 5 are, for example, the length L for relatively fine chips.
It is effective to determine the size of the chips, such as setting the inclination and the inclination angle θ to be smaller, and setting the length and the inclination angle θ to be larger as the chips become larger. L is selected and set in a range of approximately 3 to 10 cm, and the inclination angle θ
Is selected and set in a range of approximately 2 ° to 10 °.

[0017]

As described above, according to the present invention, as a means for separating the cutting fluid (coolant) from the swarf adsorbed on the magnet drum, a conventional rubber squeezing roller is not used and the leading edge is formed. By using a separation blade that contacts the magnet drum, the cutting fluid is damped at the contact portion between the leading edge of the separation blade and the magnet drum, and the chips are scraped off onto the separation blade. The separation performance does not change (decrease), and even if foreign matter or cuttings are mixed in the cutting fluid, the separation performance can be maintained. Is simple and has few failures, so it is very advantageous in terms of price. Furthermore, it can be easily and inexpensively applied to magnet separators currently in use. It is those that can lead to the effect of the above great.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an example of a magnet separator according to the present invention.

FIG. 2 is a longitudinal sectional view showing details of a relational structure between a magnet drum and a separation blade of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tank main body 2 Cutting fluid inlet 3 Magnet drum 4 Driving means 5 Separation blade 6 Separation discharge plate 7 Chip receiver 8 Cutting fluid outlet 9 Chip

Claims (3)

[Claims] 1. A magnet separator provided with a magnet drum which is rotated by a driving means and adsorbs chips in a cutting fluid, wherein a separation blade is provided with a leading edge of the separation blade substantially directly above the center of the magnet drum. The separation blade is attached in a state where it is brought into contact with the magnetic drum, and the chips adsorbed on the magnet drum are scraped off on the separation blade, and the cutting fluid is stopped at a contact portion between the leading edge of the separation blade and the magnet drum, whereby the chips are removed. And a cutting fluid, wherein the cutting fluid and the cutting fluid are separated from each other. 2. The apparatus according to claim 1, wherein the separation blade is attached in a state of being inclined upward at a predetermined inclination angle from the leading edge to the other end. A separator for separating cutting fluid and cutting fluid of a magnetic separator. 3. The apparatus for separating chips and cutting fluid of a magnetic separator according to claim 2, wherein the inclination angle of the separation blade is small when the chips are fine, and increases as the size of the chips increases. An apparatus for separating chips and cutting fluid of a magnetic separator, wherein the apparatus is set at an inclination angle.