Showing papers on "Cutting fluid published in 1993"

Device for supplying fluid to tool

Abstract: A device for accurately supplying a fluid such as a cutting fluid to the cutting portion of a tool of any of a wide variety of tools includes a tool holder having an internal fluid passageway and a forward end formed to include an annular fluid supply groove in communication with the fluid passageway, a nozzle ring having nozzles communicating with the annular fluid supply groove, and a coupling ring, which is screwed onto the forward end of the tool holder, for fixedly fastening the nozzle ring to the tool holder in an attachable and detachable manner. A cutting fluid from a fluid supply source is fed under pressure to the nozzles of the nozzle ring through the fluid passageway and the annular fluid supply groove, and the cutting fluid is jetted from the nozzles toward the cutting portion of the tool, such as a drill, held by the tool holder. The number of nozzles in the nozzle ring and the direction thereof can be changed to make it possible to supply the fluid to the cutting portions of a wide variety of tools.

Contact allergy to a fatty acid ester component of cutting fluids

Abstract: 6 patients employed in the metalworking industry developed a hand dermatitis after exposure to a vegetable-oil-based cutting fluid. After thorough investigation, including patch testing with components in the cutting fluid as well as an oil and cutting fluid series, contact allergy was demonstrated to a fatty acid ester EM-550 in the cutting fluid.

Method of fabricating articles

Abstract: A method of fabricating articles, such as an oxide ceramic article, is disclosed. The method includes cutting an oxide ceramic workpiece in a cutting zone and applying a cutting fluid to the cutting zone. The cutting fluid includes an aqueous solution which contains a sufficient amount of a boron compound to effectively provide lubrication. The boron compound is selected from the group consisting of boric acid, alkali metal borates, aluminum borate, and mixtures thereof. A method of fabricating articles, which includes cutting a workpiece in a cutting zone with an oxide ceramic cutting point and applying a cutting fluid to the cutting zone is also disclosed.

Arrangement and plant for fluid jet cutting of food products

Abstract: An arrangement for fluid jet cutting, especially for food products, comprises a nozzle (6) which is movable on a frame (3, 7). The arrangement includes an angled pipe (5), one end of which is fixedly connected to and in fluid communication with one end of the shaft (4), which is hollow, of a reversible rotary motor (3), the other end of the shaft (4) being connected by means of a rotary coupling (5b) to a conduit (5a) for cutting fluid, and the other end of the pipe (5) being connected to said nozzle (6). A plant for fluid jet cutting, especially for food products comprises a belt conveyor (1) for carrying said products, a device (8) for analysing quality and/or quantity characteristics of the products to be cut, and a device (9) for controlling the operation of the fluid jet arrangement (2) for cutting the products on the conveyor (1) in response to commands from the analysing device.

Method and device for cooling the machine zone using an ionized gaseous cutting fluid

Abstract: The method and device are used for cooling the machining zone of a machine tool. According to a method for cooling the machining zone a gaseous cutting to a method for cooling the machining zone a gaseous cutting fluid that has previously been treated with in the field of a corona discharge initiated in an ionizer is fed to the machining zone at a rate not below the cutting speed, a controlled stabilized electric current being used for initiating a corona discharge, the intensity of the electric current is changed in accordance with a change in the rate of flow of the gaseous cutting fluid. A device for carrying the method into effect comprises an ionizer (1) having a housing (7) provided with an outlet nozzle (8) and communicating, through a piping (9), with a source (3) of the gaseous cutting fluid, a corona-discharge electrode (2) accommodated in the housing (1), and a power source (4) electrically connected to the corona-discharge electrode (2) is also provided with a regulator (5) connected in the gaseous cutting fluid feed piping (9) and with a controlled stabilizer (6) of the output electric current intensity connected to the supply circuit of the corona-discharge electrode (2).

Method of controlling wire cut discharge machine

Abstract: A method of controlling a wire cut discharge machine which improves machining accuracy when a corner portion is machined. When a portion to be machined is a corner portion, the pressure and/or quantity of cutting fluid to be fed to a gap between a work and a wire electrode is reduced for only a specific zone. Setting of this zone and feed regulation of cutting fluid are determined on the basis of an allowable radius and the shape and dimension of the corner portion. The discharge energy to be supplied between the work and the wire electrode is decreased simultaneously with the feed regulation of the machining liquid in the zone described above.

Characteristic properties of cutting fluid additives derived from the adducts of diamines and acid chlorides

Abstract: A number of N,N′-diacylalkyldiamines were prepared from the reaction of acid chlorides with 1,8-diaminooctane and 1,12-diaminododecane and screened for anti-rust properties and antimicrobial activity in spent coolants of water-based cutting fluids. Aqueous solutions of N,N′-dihexanoyl-1,8-diaminooctane and N,N′-isobutyroyl-1,12-diaminododecane showed good anti-rust properties for water-based cutting fluids. Aqueous emulsions of N,N′-dibutyroyl-, dipentanoyl-, dihexanoyl- and dioctanoyl-1,12-diaminododecane showed good lubricities and antimicrobial activity for water-based cutting fluids.

High Speed Machining of Inconel 718 with Ceramic Tools. Suppression of Notch Wear.

Abstract: High speed machining of Inconel 718 with SiC whisker reinforced alumina, silicon nitride and TiC added alumina ceramic tools was carried out. All the ceramic tools tested showed the maximal value of the notch wear around the cutting speed of 100 m/min. SiC whisker and silicon nitride ceramic tools showed good performance compared to TiC added alumina ceramic tool in respect of the notch wear under the low cutting speed or low feed rate. However, over the cutting speed of 400 m/min, not only the notch wear but also the flank wear of these tool became large, while TiC added ceramic tools showed the smallest wear compared to other tools. Notch wear of these tools can be suppressed by pouring the cutting fluid at the depth of cut line.

Board finishing machine and dust collector thereof

Abstract: PURPOSE:To clean a cutting fluid by improving the machining quality and efficiency of a workpiece through a supply of the cutting fluid, while circulating the cutting fluid by means of a dust collector. CONSTITUTION:A pressure foot 6 is installed in a spindle 2 attached to a machine body 1 and, in turn, a dust collector 8 is connected to this pressure foot 6 via a pump 7 and an exhaust pipe 10 through a feed pipe 9, and the pump 7 and the dust collector 8 are connected to each other by a feed pipe 18. The dust collector 8, consisting of a blower part 11, a dust box part 12 and a tank part 13, is partitioned off by a filter 14. Chips sucked into the dust box part 12 are accumulated on the filter 14, while a cutting fluid is run past and fed into the tank part 13.

Cutting head for cutting pipes from inside - consists of revolving nozzle supplied with mixture of water and abrasive material and clamp to fix it to inside of pipe

Abstract: The nozzle (24) can revolve about the middle axis of the cutting head, and is held in a holder (23) which has to be turned to remove it. The axle has a removable part (19) which central boring (20) into which several radial borings (21,22) are linked to feed the cutting fluid to the nozzle (24). The removable part (19) is in a removable guideway (26) which also has a boring (30) connected to one side of the cutting fluid line (31), and on the other side it ends in a ring channel (27) at the level of the radial borings, and is sealed with sealing material (28,29). USE/ADVANTAGE - Machine can cut pipes from inside, eliminating danger of explosions.

Water-soluble cutting fluid

Abstract: The present invention relates to a transparent water soluble synthesis cutting fluid composition which is prepared from a plurality of ingredients such as anti-rust agents, cleaning agents, antifoaming agents, antiabrasive agents, etc. and water. The cutting fluid is characterized in that a reacting substance of a morpholine derivative and orthoboric acid is used as the anti-rust agent for completely replacing a sodium nitrite anti-rust agent generally used at present. Consequently, the toxicity problem and the pollution problem of the cutting fluid are solved. The present invention has the advantages of easy acquirement of raw materials, simple preparation process and good actually cutting effect.