Showing papers on "Cutting fluid published in 1982"

Aqueous cutting fluid for machining fissionable materials

Abstract: The present invention is directed to a cutting fluid for machining fissionable material. The cutting fluid is formed of glycol, water and boron compound in an adequate concentration for effective neutron attenuation so as to inhibit criticality incidents during machining.

The Wear of High Speed Steel Cutting Tools Under the Action of Several Different Cutting Fluids

Abstract: A study of the influence of soluble and straight cutting oils when turning on alloy steel with high speed steel tools is reported. The results indicate that under practical cutting conditions the straight oils did not penetrate to the chip-tool interface and hence did not exhibit a lubricating action, whilst the soluble oils showed considerable penetration. In all cases, the dominating wear form is shown to be the groove wear at the trailing edge, in that this wear controlled the complete failure of the tools. A neat oil is shown to be the best all round cutting fluid, increasing tool life in both roughing and finishing situations, whilst E.P. additives to the neat oil produce a consistent reduction in life. The soluble oils, with and without E.P. additives are shown to be effective only under roughing conditions.

Method and apparatus for cutting hard and brittle material using system for applying vibration in two directions

Abstract: A method and apparatus for cutting a hard and brittle material using a system for applying vibration in two directions with a strip-shaped flat cutting tool. The material to be cut is caused to make a reciprocating motion of a given stroke length together with a first small-amplitude, low frequency vibration in directions parallel to the reciprocating motion. Concurrently with this, a second small-amplitude vibration is applied also to the material to be cut in directions parallel to the cutting direction of the cutting tool into the material and in synchronism with the first small-amplitude vibration. Meanwhile, cutting pressure is applied to the cutting tool to a desired degree with a cutting fluid containing abrasive grain supplied to the cutting part of the material during the process of cutting.

Jetting device of cutting fluid in numerically controlled machine tool

Abstract: PURPOSE:To eliminate the necessity for position adjusting work of a cutting fluid hose at each replacement of a tool and perform unmanned operation, by switching a feed of cutting fluid to plural cutting fluid hose with valves and controlling the valves through a selective control command of the tool. CONSTITUTION:Plural cutting fluid hoses 10a-10d are constituted and arranged in such a manner that jetting direction set nozzles 11 are mounted to their point ends and jetted cutting fluid can reach a different position of a tool 5 mounted to a main spindle 1. The cutting fluid is fed to the hoses 10a-10d through solenoid valves 15, 16 and pipes 17a-17d, selected with flow passages by solenoid coils 15a, 15b and 16a, 16b, and jetted from each nozzle 11. A selective control command of the cutting fluid hose, for selecting the hoses 10a-10d, is stored with a machining command, and a command tape is selected in accordance with length of the tool 5, then the solenoid valve is excited on the basis of the command from a numerical control device 25.

Supply device of cutting fluid or the like

Abstract: PURPOSE:To enable to keep the cutting fluid at constant level and to effectively collect floating substance by a method wherein a make-up device to make up the reduced amount of the cutting fluid and a scraping device to collect the floating substance are provided in the circulating storage tank of the cutting fluid and in addition both the above-mentioned devices are operated coupled with the stopping action of the device. CONSTITUTION:When the fluid level a, which ascends at the stoppage of supply of the cutting fluid, in the storage tank 10 is lower than the detecting position of a level gage 21, make-up water is supplied through a make-up pipe 23. When the fluid level a reaches to the detecting position of the level gage 21, a guide roller 12a is caused to rotate so as to run a raking-up scraper 14 toward the direction as indicated with an arrow. Owing to the running of the scraper 14, the floating substance B on the fluid level a is collected rightward to the partition wall 15 side and in succession adsorbed with an adsorption belt 18 in order to be discharged through a scraping board 19 to a discharge tray 20. In addition, sediment C is discharged from the opening 10c of a bottom surface 10a.

The effect of a cutting-fluid filter on tool life and surface finish.

Abstract: Cutting fluids are used to improve performance in machining operations. In general, the benefits include increased tool life; reduced cutting forces and power consumption; reduced distortion due to the temperature rise in the workpiece; etc. In order for these benefits to occur, the cutting fluids must be properly selected and maintained. To maintain the quality of a cutting fluid, the use of a filtration device is necessary. The cutting-fluid filters are used to separate out unwanted foreign materials such as tramp oils, chips or swarf from the cutting fluids. An experiment was conducted to investigate the benefits to be gained by using a cutting-fluid filter. The type of filter used was a coalescing plate filter. The type of machining operation was turning. The results of the experiment showed that the use of the coalescing plate filter improved tool life significantly for a variety of work materials and cutting conditions. Tool life increases ranged from 16% to 120%. Surface finish was not significantly influenced by the use of the filter except that the same tool could be used longer to generate the same finish. iv