JP2014180744A - Processing device of machine tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multifunctional machine tool capable of conducting aluminum processing, small work piece processing, carbonization prevention of a diamond tool, and magnesium processing.SOLUTION: A processing device 10 includes: a dish type table 3 which opens on an upper surface and is placed on a base 2 of a processor 1; jig means K which clamps a processing material W and is located on the upper surface of the dish type table; a coolant supply/discharge mechanism 20 which is located at a lower part of the base, supplies a coolant liquid C1 to the dish type table, and discharges the coolant liquid C1; a foam supply/discharge mechanism 30 which uses an inactive gas G to supply a coolant liquid C2 to the dish type table as a foam body A and discharges the coolant liquid C2; and an inactive gas supply mechanism 40.

Description

  The present invention is such that small workpieces vibrate at high pressure of direct injection cooling of ultra-high pressure coolant liquid and machining accuracy is lowered, aluminum machining that causes severe thermal displacement due to machining heat, intense thermal oxidation reaction by machining heat and carbonization wear A machine tool that eliminates many problems such as diamond tools that cause cracking and magnesium processing that causes fire hazards due to the ignition of chips that occur during cutting, so that it can be implemented with a single machine tool. The present invention relates to a processing apparatus.

  In recent years, in the cutting and grinding fields, a cutting fluid or grinding fluid is sprayed and cooled on the workpiece from an external spray nozzle, and a work material is ejected from an injection hole in a tool or a grindstone. A method for directly and efficiently injecting a cutting fluid or a grinding fluid toward a cutting surface or a grinding surface is provided. In addition, in magnesium processing that causes a fire hazard due to ignition of chips that occur during cutting processing, technology to process in a nitrogen atmosphere with the processing point made oxygen-free to prevent ignition and nitrogen that makes the processing point oxygen-free A processing device for processing by wrapping with foam is provided.

  Bubble grinding is provided in which a contact portion between the processing tool and the workpiece is covered with a foam-like processing liquid for processing. This bubble grinding has the merit that dry grinding, sludge suction, and oxygen can be cut off to prevent oxidation. One of the specific known configurations is that the cutting fluid is foamed by a foaming device, the foam is supplied to the workpiece, and the contact portion between the workpiece and the cutting blade is covered with foam. Cutting is performed. Dust-like chips generated at the time of cutting are trapped by the bubbles and scattering is avoided. The foam has better retention than the liquid, and even if the amount of the cutting fluid used is reduced, the lubricity between them can be kept good, and the cost can be reduced. Moreover, since foam does not cool the cutting edge abruptly, it is possible to suppress the occurrence of thermal cracks and to increase the life of the milling cutter (for example, see Patent Document 1).

  Furthermore, there is provided a machining fluid that can be used in a small amount and that can suppress a chemical reaction of a machining tool or a workpiece. The configuration is obtained by removing a defoaming agent from a water-soluble coolant that is a kind of processing liquid, and bubbling with argon gas that is a kind of inert gas to obtain a foamy coolant. If this foamed coolant is supplied around the workpiece and the throwaway tip, the part that becomes hot due to the cutting heat is covered with argon gas to suppress chemical reactions such as oxidation, and the life of the throwaway tip And the processing quality of the workpiece is improved. Further, since the foamed coolant is likely to adhere to and stay on the workpiece or the like, the purpose of lubrication and cooling can be achieved with a small amount of coolant (see, for example, Patent Document 2).

  Furthermore, while capturing fine powder such as chips and dust discharged by cutting and grinding, it can be safely transported and collected and processed to improve the working tool and surrounding work environment. A recovery device and method are provided. The configuration is that the first liquid is stored and an inert gas is introduced to generate a large amount of bubbles to form a foam lump, and a portion that is connected to the bubble generating portion and generates fine powder The foam filling part that collects and transports fine powder while moving the foam lump that is installed around the foam generating part, and the foam lump that is connected to this foam filling part and collects the fine powder is guided It consists of the fine powder collection | recovery part which stores the 2nd liquid defoamed (for example, refer patent document 3).

  JP-A-5-104393   JP-A-5-329742   JP 2003-236730 A

  JP-A-5-104393 discloses that a contact portion between a machining tool and a workpiece is covered with a foam-like machining liquid, dust-like chips generated during cutting can be captured and scattered, and bubbles are retained. The amount of cutting fluid is small and the lubricity is good. However, since the cutting fluid is mixed with air in the foaming device and foamed, the equipment is increased, the running cost is increased, and the maintenance of the foaming device is increased. And since the gas mixed with the cutting fluid is oxygen-containing air, it comes into contact with the processing point in a state where the oxygen in the bubble is stagnant, and promotes oxidation of the processing point to reduce rust prevention at the processing point, processing point There is a phenomenon of poor cleaning and poor separation of foam after processing and cutting waste. Furthermore, in magnesium processing, it cannot react with the water in the foam and suppress the ignition phenomenon of chips.

  In the above-mentioned JP-A-5-329742, the anti-foaming agent is removed from the water-soluble coolant and the foamed coolant is made by bubbling with an inert argon gas. As a result, when foam coolant is supplied to the periphery of the workpiece and the throwaway tip, the portion that becomes hot due to the cutting heat is covered with argon gas, and chemical reactions such as oxidation are suppressed. The service life is extended and the processing quality of the workpiece is improved. However, equipment such as a foaming device is essential, and this increases the equipment cost, the running cost, and the maintenance of the foaming device. Furthermore, since the processing fluid is a water-soluble coolant, even if it is bubbled with an inert gas, argon gas, it is a mixed foam with the water-soluble coolant, so it remains weakly acidic, and is expected to have high antirust, cleaning, and anti-corruption effects. Can not. Furthermore, in magnesium processing, it cannot react with the water in the foam and suppress the ignition phenomenon of chips.

  JP-A-2003-236730 discloses a foam generation unit that stores a first liquid and introduces an inert gas to form a large amount of foam and foam mass, and is installed around a place where fine powder is generated. The foam filling part that moves the foam from the foam generation part and collects and transports the fine powder and the second liquid that is connected to the foam filling part and guides the foam that collects the fine powder and defoams are stored. A fine powder recovery unit is required, resulting in an increase in equipment cost, running cost, and maintenance of the foaming device. Furthermore, the mixed foam with the liquid remains weakly acidic, and high antirust, cleaning, and anticorruption effects cannot be expected. And in magnesium processing, it reacts with the water in a bubble and cannot suppress the ignition phenomenon of a chip.

  The problem of the above-mentioned known technique is that (1) bubbles are supplied to the tool cutting edge and the outer periphery of the grindstone, which causes clogging inside the grindstone. (2) It is difficult to reliably supply foam to the processing point, and it is difficult to completely surround the outer peripheral surface of the grindstone with foam containing an inert gas. (3) If the grindstone moves vigorously, the foam completely surrounds the outer periphery of the grindstone and cannot follow and move, and the cooling of the work surface and the oxygen-free state tend to be incomplete. (4) Since the entire inside of the grinding machine or processing machine cannot be filled with foam, the cooling of the processing surface and the oxygen-free state are likely to be incomplete, and the grinding and cutting waste recovery processing is incomplete. (5) Since a large cooling effect cannot be expected, it cannot cope with aluminum processing that causes severe thermal displacement due to processing heat. Furthermore, there is a problem of diamond tools that cause carbonization wear due to intense thermal oxidation reaction due to processing heat. (6) Furthermore, since it is a single-function machine equipped only with a foam foaming device, it cannot be used for magnesium processing that causes a fire hazard due to ignition of chips occurring during cutting processing.

  As described above, small workpieces vibrate at a high pressure of direct injection cooling of ultra-high pressure coolant liquid to reduce machining accuracy, aluminum machining that causes severe thermal displacement due to machining heat, intense thermal oxidation reaction due to machining heat, and carbonization Occupancy rate because a single machine tool cannot be used as a multi-function machine to solve a number of problems, such as diamond tools that cause wear and magnesium machining that causes fire hazards due to ignition of chips during cutting As equipment declines, it must have a lot of equipment.

  The present invention has been made in view of the problems of the above-described processing techniques. In one machine tool, small workpieces can be processed underwater with coolant liquid to improve processing accuracy without vibration, and underwater processing with coolant liquid. In addition, aluminum processing that prevents welding of the tool edge by the erosion effect caused by cavitation that occurs in the water while suppressing the heat generated by machining, and underwater processing of the diamond tool and diamond by the inert gas in the foam Reduction of carbonization wear due to suppression of thermal oxidation reaction of the tool, and magnesium processing made an oxygen-free environment in which inert gas was injected at the processing point and surrounded the outer periphery with foam to completely prevent chip ignition Safe processing is possible. This provides a machine tool for a new machine tool that can switch multi-function machining with a single machine tool, improve the operating rate, and minimize equipment.

  In order to achieve the above object, a machine tool processing apparatus according to claim 1 of the present invention is equipped with a dish-shaped table having an open upper surface on a base of a processing machine, and a work material is placed on the upper surface of the dish-shaped table. A jig means for clamping is provided, a machining head is provided above the dish-shaped table, and a coolant supply is supplied to the lower part of the base from the coolant tank and is collected in the coolant tank in the dish-shaped table. A discharge mechanism, a foam supply and discharge mechanism for mixing the inert gas and the coolant liquid from the coolant tank into the dish-type table and filling and supplying the foamed foam as a foam, and collecting the inert gas into the coolant tank Inert gas injection means provided with an injection nozzle that injects the cutting tool of the processing head and the processing point of the workpiece.

  A machine tool processing apparatus according to a second aspect of the present invention is the machine tool processing apparatus according to the first aspect, wherein the coolant supply and discharge mechanism includes a coolant tank, a coolant pump, the coolant pump, and a dish-shaped table. An on-off valve for discharging the used coolant liquid in the dish-type table, a filter for separating chips in the coolant liquid, and the coolant liquid discharged from the separator in the coolant tank. And a pipe for returning to the main body.

  The machine tool processing apparatus according to claim 3 of the present invention is the machine tool processing apparatus according to claim 1, wherein the foam supply / discharge mechanism includes a coolant tank, a coolant pump connected to the coolant tank, and an inertness. A gas supply source of gas, a coolant liquid from the coolant pump and an inert gas from the gas supply source are made into a foam in a mixer that functions on the principle of a vaporizer, and the foam is placed in the dish-type table. An on-off valve that discharges the used foam in the dish-shaped table, a separator that separates the foamed coolant liquid and foam from the foam, and the separation And a pipe for returning the coolant liquid of the filter for removing chips from the coolant liquid discharged from the vessel to the coolant tank.

  A machine tool processing apparatus according to a fourth aspect of the present invention is the machine tool processing apparatus according to the first aspect, wherein the inert gas injection means is processed through a gas supply source of an inert gas, an on-off valve, and a pipe. It is characterized in that an injection nozzle for injecting an inert gas to the cutting tool tip is provided at the machining head while being connected to the cutting tool tip of the head through a center through coolant hole.

  The machine tool processing apparatus according to claim 5 of the present invention is the machine tool processing apparatus according to any one of claims 1 to 4, wherein the coolant supply / discharge mechanism and the bubble supply / discharge mechanism are each a coolant tank, a filter, Only one set of each coolant pump is provided in a common usage form via a switching valve.

  According to the machine tool processing apparatus of the present invention, a dish-shaped table having an open upper surface is mounted on a base of the machine tool, and jig means for clamping a workpiece is provided on the upper surface of the dish-shaped table, Since the lower part of the base is equipped with a coolant supply / discharge mechanism that feeds the coolant liquid into the dish-type table, if the coolant supply / discharge mechanism is operated by a single machine tool, the coolant is processed underwater. Precise machining can be performed with high efficiency by suppressing heat generation of metal materials and other workpieces that dislike processing heat, including aluminum processing that causes severe thermal displacement due to heat. Furthermore, machining accuracy can be improved without vibration in small workpieces underwater machining of coolant. Aluminum processing that prevents welding of the tool edge due to the erosion effect due to cavitation caused by high-speed rotation of the cutting tool that occurs in water and suppresses heat by underwater processing of coolant liquid, and due to underwater processing of diamond tools Carbonized wear can be reduced by suppressing the thermal oxidation reaction of the diamond tool.

  Further, the coolant supply / discharge mechanism provided in the machining device of the machine tool includes a coolant tank, a coolant pump, and a pipe connecting the coolant pump and the dish mold table, and the used coolant liquid in the dish mold table is supplied. Since the on-off valve for discharging, the filter for separating the chips in the coolant liquid, and the piping for returning the coolant liquid discharged from the separator to the coolant tank are provided, the coolant liquid is always in the dish-type table. Efficiently absorbs the heat energy generated from the workpieces, suppresses vibrations of small workpieces, and efficiently suppresses the heat generation of metal tools and other tool blades that dislike processing heat such as aluminum machining, enabling high precision machining. It can be carried out with high efficiency and the coolant can be reused.

  Further, if a strong alkaline liquid is used as the coolant liquid, a high effect of rust prevention, cleaning and anti-corruption can be obtained. In addition, if natural soap-based foaming agent water is used, it is possible to expect post-treatment separation of cutting waste and maintenance of the cleanliness of the coolant due to the high cutting waste adsorption effect and high gas-liquid separation, and the coolant is used repeatedly. it can.

  Furthermore, according to the foam supply / discharge mechanism provided in the processing device of the machine tool, the foam of the foam can obtain an effect of suppressing the carbonization wear particularly by preventing the thermal oxidation reaction of the diamond tool (during cutting and grinding). In addition, due to the formation of microbubbles in the foam, the interface is formed between two phases of a gas phase and a liquid phase, a liquid phase and a liquid phase, a liquid phase and a solid phase, and a solid phase and a solid phase. As a result, pressure is generated between the interfaces due to the interfacial tension, and the pressure applied to the bubbles increases in inverse proportion to the size of the bubbles. As a result, the fine bubbles are further reduced by the pressure, and the pressure is further increased to obtain a theoretically infinite pressure.

  Furthermore, magnesium processing that causes a fire hazard due to ignition of chips that occur during cutting processing by the foam supply and discharge mechanism and inert gas supply mechanism provided in the processing device of the machine tool is an inert gas around the processing point of magnesium. The foam is inflated and surrounded by injection of magnesium, and an inert gas is accurately injected and filled into magnesium and blades to expand the oxygen-free space like a balloon. As a result, the swollen foam wraps around the dish-shaped table and the upper processing head, and even if the processing head in the oxygen-free space moves in three directions, the foam does not break and follows the non-resistance completely. Can be blocked. The perfect shut-off protection of the oxygen-free space enables safe and highly efficient implementation that completely suppresses the ignition action of magnesium chips filled with inert gas.

  Further, the foam supply / discharge mechanism provided in the processing device of the machine tool includes a coolant tank, a coolant pump connected to the coolant tank, a gas supply source of an inert gas, and a coolant liquid and a gas tank from the coolant pump. The inert gas is made into a foam with a mixer that functions on the principle of a vaporizer, and is provided with a pipe for supplying the foam into the dish-shaped table, and the used foam in the dish-shaped table is discharged. An on-off valve, a separator that separates foam from coolant containing foam, and a filter that removes chips from the coolant discharged from the separator are supplied to the coolant tank. The foam (foam coolant liquid) can be supplied to the blade and magnesium, and after use, the filtered coolant liquid can be collected again in the coolant tank. It can be used repeatedly.

  Furthermore, the coolant supply / discharge machine and the foam supply / discharge mechanism provided in the machine tool processing device use a coolant tank, a filter, and a coolant pump via a switching valve in common. Many advantages such as simplification of down and maintenance.

BRIEF DESCRIPTION OF THE DRAWINGS It is the whole piping diagram of the processing apparatus of a machine tool which shows the 1st Embodiment of this invention. It is a piping diagram which shows the 1st Embodiment of this invention and produces | generates a foam with a processing apparatus. 1 is a cross-sectional view of a foam mixer according to a first embodiment of the present invention. It is a piping diagram of the processing apparatus of a machine tool, showing the second embodiment of the present invention.

  Hereinafter, a machine tool processing apparatus according to each embodiment of the present invention will be sequentially described with reference to FIGS. 1 to 4.

  The machine tool processing apparatus 10 according to the first embodiment of the present invention is shown in FIGS. On the base 2 of the processing machine 1, there is mounted a bottomed dish-shaped table 3 whose upper surface is open and can be filled with liquid or foam. On the upper surface of the dish-shaped table, there is provided jig means K for clamping aluminum W1 and other workpieces W that cause severe thermal displacement due to machining heat, and a coolant tank in the dish-shaped table 3 at the bottom of the base. 4 is provided with a coolant supply / discharge mechanism 20 that fills and supplies the coolant liquid C <b> 1 from the coolant 4 and collects the coolant in the coolant tank 4. Further, in the dish-shaped table, an inert gas G from a gas supply source (including a gas tank and a nitrogen gas generation device) 5 and a coolant C2 from the coolant tank 6 are mixed with a foam A by a mixer 7. The foam supply / discharge mechanism 30 is also provided for charging and supplying to the coolant tank 6 again. That is, the coolant supply / discharge mechanism 20 that submerses the workpiece W of the aluminum W1, the foam supply / discharge mechanism 30 that performs oxygen-free foam processing of the magnesium W2, and the inert gas supply mechanism 40 are combined into a single machine. Equipped on machine tools.

  Hereinafter, each configuration of the coolant supply / discharge mechanism 20 for submerging the aluminum W1 and the small work W3 will be described. A coolant tank 4, a coolant pump P 1, a pipe P connecting the coolant pump and the dish-shaped table 3, an on-off valve V 1 for discharging the used coolant liquid C 1 in the dish-shaped table, and the coolant liquid The filter 11 which isolate | separates the chips of this, and the piping P3 which returns the coolant C1 discharged | emitted from the said filter to the said coolant tank 4 is comprised. If the coolant solution C1 is a general alkaline solution or a strong alkaline solution, a high rust prevention / cleaning / anti-corruption effect can be obtained. In addition, if natural soap-based foaming agent water is used, it is possible to expect post-treatment separation of cutting waste and maintenance of the cleanliness of the coolant due to the high cutting waste adsorption effect and high gas-liquid separation, and the coolant is used repeatedly. it can.

  Furthermore, each structure of the said foam supply / discharge mechanism 30 and the inert gas supply mechanism 40 which processes magnesium W2 in an oxygen-free foam is demonstrated. A coolant tank 6, a coolant pump P2 connected to the coolant tank, a gas supply source (including a gas tank and a nitrogen gas generator) 5 of an inert gas G, a coolant C2 and a gas supply source from the coolant pump The inert gas G (including gas tank and nitrogen gas generator) is made into a foam A with a mixer 7 that functions in accordance with the principle of a vaporizer, and the foam is filled into the dish-shaped table 3 P4. The inert gas supply mechanism 40 includes a cutting tool tip of the processing head H of the processing machine 1 through an inert gas G gas supply source (gas tank 5 or nitrogen gas generator, etc.) 5, an on-off valve V4, and a pipe P6. An injection nozzle N1 for injecting an inert gas G to the cutting tool tip is provided at the machining head H while being in communication with the center through coolant hole CS.

  The used foam A in the dish-shaped table includes an on-off valve V2 for discharging the separator, a separator 8 for separating the coolant A2 containing chips from the foam and the foam A, and the separator. The coolant is recovered by a pipe P5 that returns the coolant C2 of the filter 12 that removes chips from the coolant C2 discharged from the coolant to the coolant tank 6. If the coolant liquid C2 uses a strong alkaline liquid as a coolant liquid in addition to a general one, a high rust prevention / cleaning / anti-corruption effect can be obtained. In addition, if natural soap-based foaming agent water is used, it is possible to expect post-treatment separation of cutting waste and maintenance of the cleanliness of the coolant due to the high cutting waste adsorption effect and high gas-liquid separation, and the coolant is used repeatedly. it can.

  The mixer 7 generates a foam A by using the coolant C2 from the coolant pump and the inert gas G from the gas supply source (gas tank 5 or nitrogen gas generator, etc.) 5 according to the principle of the vaporizer. To do. One embodiment of the configuration is shown in FIG. Of course, the present invention is not limited to the above embodiment, and various types of mixers can be employed. In the mixer 7, the coolant C2 from the coolant tank 6 is guided to the nozzle N by the coolant pump P2. Further, the inert gas G is blown from the gas supply source (gas tank 5 or nitrogen gas generator or the like) 5 to the inlet side of the venturi 7A of the mixer. As a result, the pressure at the tip of the nozzle becomes negative, and the coolant C2 becomes a foam A from the discharge port and is ejected downstream of the cylinder 7B. The foam A is introduced into the dish-shaped table 3 from the pipe P4 and filled with the jig means K and the entire magnesium W2 in the dish-shaped table 3 as shown in FIG. Then, the inert gas supply mechanism 40 is installed in the center through coolant hole CS and the processing head H from the gas supply source 5 of the inert gas G to the blade tip C of the processing head H of the processing machine 1, and the blade tip. An inert gas G is injected from the injection nozzle N1 of the part, and the cutting tool C, the jig means K, and the entire magnesium W2 are sealed with a foam A on the outer periphery to form an oxygen-free gas space GS. Protects against oxidation of W2 and burning of chips.

  The machine tool processing apparatus 10 of the present invention is configured as described above, and includes a coolant supply / discharge mechanism 20 for submerging the aluminum workpiece W1 and a foam supply / discharge for processing the magnesium workpiece W2 with oxygen-free foam. Two actions of the mechanism 30 will be described.

  First, as shown in FIG. 1, the submerged machining of the aluminum W1 by the coolant supply / discharge mechanism 20 is performed by attaching a cutting tool C to the rotating spindle of the processing machine 1 and opening the upper surface on the base 2. 3 and a workpiece W (aluminum W1) is fastened to the jig means K on the upper surface of the dish-shaped table. Since the coolant supply / discharge mechanism 20 for sending the coolant liquid C1 into the dish-shaped table 3 is provided at the lower part of the base, the coolant liquid C1 in the coolant tank 4 is filled in the dish-shaped table 3 by the coolant pump P1. Supplied. As a result, the aluminum W1 is submerged in the coolant C1, and, in addition to aluminum processing that causes severe thermal displacement due to processing heat, heat generation of a metal material that dislikes processing heat is suppressed and precision processing is performed with high efficiency. Furthermore, machining accuracy can be improved without vibration in small workpieces underwater machining of coolant. Aluminum processing that prevents welding of the tool edge due to the erosion effect due to cavitation caused by high-speed rotation of the cutting tool that occurs in water and suppresses heat by underwater processing of coolant liquid, and due to underwater processing of diamond tools Carbonized wear can be reduced by suppressing the thermal oxidation reaction of the diamond tool. The coolant liquid C1 mixed with chips is fed from the on-off valve V1 to the filter 11 that separates chips in the coolant liquid, and the coolant liquid C1 discharged from the filter is returned to the coolant tank 4. Used for recycling.

  In addition, the coolant supply and discharge mechanism provided in the machine tool processing device efficiently absorbs the heat energy that the coolant always generates heat from the workpiece in the dish-type table. Heat generation of metal tool and other tool blades that dislike processing heat such as tools can be efficiently suppressed, high precision machining can be carried out with high efficiency, and coolant liquid can be reused.

  Furthermore, by forming the bubbles into microbubbles, an interface is formed between the two phases of the gas phase and the liquid phase, the liquid phase and the liquid phase, the liquid phase and the solid phase, and the solid phase and the solid phase. As a result, pressure is generated between the interfaces due to the interfacial tension, and the pressure applied to the bubbles increases in inverse proportion to the size of the bubbles. As a result, the fine bubbles are further reduced by the pressure, and the pressure is further increased to obtain a theoretically infinite pressure.

  Subsequently, the oxygen-free foaming of magnesium W2 by the foam supply / discharge mechanism 30 and the inert gas supply mechanism 40 is performed as shown in FIG. A cutting tool C is attached to the rotation main shaft of the processing head H of the processing machine 1, and a dish-shaped table 3 having an open upper surface is mounted on the base, and a workpiece W (magnesium) is mounted on the upper surface of the dish-shaped table. W2) is fastened to the jig means K. At the bottom of the base, from the foam supply / discharge mechanism 30 for sending the coolant C2 into the dish-shaped table 3, the coolant C2 from the coolant pump P2 connected to the coolant tank 6 and the inertness from the gas supply source 5 The gas G becomes the foam A in the mixer 7 that functions on the principle of a vaporizer. The foam A is filled and supplied from the pipe P4 into the dish-shaped table. At the same time, the inert gas supply mechanism 40 is installed in the center through coolant hole CS and the processing head H from the gas supply source 5 of the inert gas G to the blade tip C of the processing head H of the processing machine 1. The inert gas G is injected into the foam A from the injection nozzle N1 at the tip of the blade. Thus, the entire cutting tool C, jig means K and magnesium W2 form a gas space GS in which the outer side is sealed with foam A inside the dish-shaped table and the inert gas G filled inside is in an oxygen-free state. To do. Thereby, the magnesium process which protected the oxidation of magnesium W2 and the combustion of a chip is processed safely. Furthermore, even if the machining head in the oxygen-free space moves three-dimensionally, the foam is not broken and can be completely blocked following the non-resistance. Safe and highly efficient implementation with complete suppression of the ignition action of magnesium chips filled with inert gas is achieved by perfect shut-off protection of the oxygen-free space.

  If a strong alkaline liquid is used for the foam (foam coolant liquid) A, there is a high anti-rust / cleaning / anti-rot effect. In addition, if natural soap-based foaming agent water is used, it is possible to expect post-treatment separation of cutting waste and maintenance of the cleanliness of the coolant due to the high cutting waste adsorption effect and high gas-liquid separation, and the coolant is used repeatedly. it can. That is, the on-off valve V2 for discharging the used foam A in the dish-shaped table 3, the coolant liquid C2 containing chips from the foam and the separator 8 for separating the foam, and the separator 8 for discharging. Then, the coolant C2 of the filter 12 that removes chips from the coolant is returned to the coolant tank 6 and recycled.

  As described above, according to the machine tool processing apparatus 10 according to the first embodiment, the coolant supply / discharge mechanism 20, the bubble supply / discharge mechanism 30, and the inert gas supply mechanism 40 are provided in one machine tool. If the coolant supply / discharge mechanism 20 is operated, the aluminum W1 is submerged with the coolant C1, and the aluminum processing that causes severe thermal displacement due to processing heat is suppressed in heat generation and precision processing is performed with high efficiency. . Underwater machining of diamond tools can reduce carbonization wear by suppressing thermal oxidation reaction of diamond tools. In addition, if the foam supply / discharge mechanism 30 and the inert gas supply mechanism 40 are functioned, magnesium processing that causes a fire hazard due to the ignition of chips during the cutting process can be carried out safely and efficiently with the ignition action completely suppressed. Is done.

  Further, the entire outer peripheral surface of the blade and magnesium forms a gas space GS in which the inert gas G sealed inside with a foam A inside the dish-shaped table and filled inside forms an oxygen-free state. Cooling and ignition prevention and chip adsorption can be demonstrated. In addition, if a strong alkaline solution is used as the coolant, a high rust prevention, cleaning, and anti-corruption effect can be obtained. Further, due to the high grinding scrap adsorbing effect by the natural soap-based foaming agent water and the high gas-liquid separation property, it is possible to expect the separation of the cutting scraps as the post-treatment and the maintenance of the cleanliness of the coolant, and the coolant can be used repeatedly.

  Furthermore, the present invention is not limited to the above embodiment. The design may be changed as in the second embodiment shown in FIG. A processing apparatus 100 for a machine tool is equipped with a dish-shaped table 3 having an open upper surface on a base 2 of a processing machine 1, and a workpiece C (W1, W2) is clamped on the upper surface of the dish-shaped table. Means K are provided. The lower part of the base is provided with a coolant tank 4, a coolant pump P1, and a switching valve V3 for supplying the coolant liquid C1 with the pipe P in the dish-shaped table, and the coolant liquid C1 in the dish-shaped table is disposed at the bottom. A coolant supply / discharge mechanism 20 that collects from the filter 11 to the coolant tank 4 via the pipe P3 from the on-off valve V1 arranged in the above is configured. And the structure which supplies the foam A to the said plate-type table is the mixer 7 with the inert gas G of the gas tank 5, and the coolant liquid C1 of the coolant tank 4 via the switching valve V3 from the coolant pump P1. Mix to make foam A. The foam A is supplied to the dish-shaped table 3 through the pipe P4, and only the coolant C1 is supplied from the on-off valve V2 arranged at the bottom through the separator 8 and the filter 11 to the coolant tank 6 through the pipe P5. The foam supply / discharge mechanism 30 to be collected is configured. The coolant tank 4, the filter 11, and the coolant pump P1 via the switching valve V3 are configured to be used in common with the coolant supply / discharge mechanism 20 and the foam supply / discharge mechanism 30. The inert gas supply mechanism 40 communicates with the cutting tool tip C of the processing head 1 through the center through coolant hole CS via the gas tank 5 serving as a gas supply source of the inert gas G, the on-off valve V4, and the pipe P6. An injection nozzle N1 that is installed on the processing head and injects the inert gas G onto the blade tip is provided independently.

  According to the second embodiment shown in FIG. 4, the coolant supply / discharge mechanism 20 and the foam supply / discharge mechanism 30 provided in the machining device 100 of the machine tool include the coolant tank 4 (6), the filter 11 (12), and the switching valve. Since the coolant pump P1 (P2) via V3 is used in common, the same effects as the first embodiment can be obtained, the processing apparatus 100 can be configured in a small space, and the manufacturing cost can be reduced and the maintenance can be simplified. And many other benefits.

  The present invention has been described in the embodiment in which the object is used in a processing device for machine tools, but various machine tools such as a grinding machine, a drilling machine, a milling machine, etc. The present invention can be applied as a processing apparatus provided in various processing machines for processing small workpieces and the like.

DESCRIPTION OF SYMBOLS 1 Processing machine 2 Base 3 Dish-type table 4, 6 Coolant tank 5 Gas supply source 7 Mixer 7A Venturi 7B Cylindrical body 8 Separator 10,100 Processing apparatus 11, 12 Filter 20 Coolant supply discharge mechanism 30 Foam supply discharge mechanism 40 Inert gas supply mechanism A Foam body B Foam C Cutting tool CD Diamond tool C1, C2 Coolant liquid CS Center through coolant hole G Inert gas GS Anoxic gas space H Processing head K Jig means N Nozzle N1 Injection nozzle P, P3 to P6 piping P1, P2 Coolant pumps V1, V2 On-off valve V3 Switching valve V4 On-off valve W Work material W1 Aluminum W2 Magnesium W3 Small work

Claims (5)

  A dish-shaped table with an open upper surface is mounted on the base of the processing machine, the upper surface in the dish-shaped table is provided with jig means for clamping a work material, and a processing head is provided above the dish-shaped table, In the lower part of the base, a coolant supply / discharge mechanism for supplying and supplying the coolant liquid from the coolant tank to the dish-shaped table and collecting the coolant in the coolant tank, and an inert gas and coolant liquid from the coolant tank in the dish-shaped table. And a foam supply / discharge mechanism for collecting and supplying the mixture as a foam and recovering it to the coolant tank, and an injection nozzle for injecting an inert gas toward the cutting tool of the processing head and the processing point of the processing material. A machine tool processing apparatus comprising: an inert gas injection unit.   The coolant supply / discharge mechanism includes a coolant tank, a coolant pump, a pipe connecting the coolant pump and the dish-shaped table, an on-off valve for discharging the used coolant liquid in the dish-shaped table, and a coolant liquid. The machine tool processing apparatus according to claim 1, further comprising: a filter that separates chips therein; and a pipe that returns the coolant discharged from the separator to the coolant tank.   The foam supply / discharge mechanism includes a coolant tank, a coolant pump connected to the coolant tank, a gas supply source of an inert gas, a coolant liquid from the coolant pump, and an inert gas from the gas supply source. An on-off valve for discharging the used foam in the dish-shaped table, comprising: a foam functioning with a mixer that functions on the principle of A separator that separates foam from the coolant liquid containing chips from the foam, and a pipe that returns the coolant liquid of the filter that removes chips from the coolant liquid discharged from the separator to the coolant tank. The machine tool processing apparatus according to claim 1, comprising:   The inert gas injection means is connected to the cutting tool tip of the machining head through a center through coolant hole via an inert gas supply source, an on-off valve, and a pipe, and is installed on the machining head and is not connected to the cutting tool tip. 2. The machine tool processing apparatus according to claim 1, further comprising an injection nozzle for injecting an active gas.   5. The machine tool processing apparatus according to claim 1, wherein the coolant supply / discharge mechanism and the foam supply / discharge mechanism are commonly used through a switching valve for each coolant tank, each filter, and each coolant pump. Machine tool processing apparatus characterized in that only one set is provided for each.

Images