JPH09295246A - Device for feeding cutting oil to tap in tapping, and tapping method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting oil feeding device to a tap in tapping in which the tapping to a work can be appropriately performed without any trouble only by cooling the tap, and feeding the cutting oil of extremely small amount capable of preventing the abrasion, a cleaning process with the fluorocarbon cleaning solution to the work after the tapping can completely be dispensed with, and the workability and efficiency are excellent. SOLUTION: A cutting oil feeding device to a tap to pierce a work in the vertical direction comprises an approximately parallelepiped work supporting body, and the work supporting body is provided with a longitudinal cavity part 2 in which an elastic porous material is filled, and a cutting oil storage part 5. The cavity part 2 is communicated with a part in the vicinity of a bottom part of the cutting oil storage part, a cap having a thorough hole of the tap is attachably/detachably covered over an upper end part of the cavity part 2, an upper surface of the cap forms a horizontal work loading surface, and a magnet is provided on a bottom part of the supporting body 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supplying cutting oil to taps in tapping, and more particularly to a device for supplying cutting oil to taps when tapping by vertically penetrating a work. is there.

[0002]

2. Description of the Related Art Conventionally, when tapping a work, cutting oil is used to reduce friction generated between the tap and the work and remove heat generated by the friction. I have. The cutting oil prevents the tap from wearing due to its lubricating properties, and its fluidity serves as a coolant that removes the generated heat.However, when the cutting oil is supplied to the tap from the oiling device equipped on the tapping machine, the tapping During the operation, the cutting oil adheres to the work at any time and spreads over the entire surface. Therefore, in the next step, the cutting oil adhering to the work must be removed with a cleaning liquid. It is actually used.

On the other hand, in recent years, the problem of preserving the global environment has been attracting attention due to the destruction of the ozone layer by Freon. As a result, the use of Freon in the industrial world has been taken up severely. There is a tendency to be abolished due to regulations, and it is necessary to use cleaning technology with substitutes for CFCs.However, if substitutes for CFCs are used, costs will naturally increase, so as a processor, Is no longer allowed for easy use,
There is a strong demand for the emergence of new technologies corresponding to this.

In order to meet such a demand, the present applicant has proposed in Japanese Patent Application Nos. 4-235376 and 4-350333 a device for supplying a cutting oil to a tap in tapping. By supplying a very small amount of cutting oil that can cool the tap and prevent wear,
It is excellent in that tapping to the work can be performed properly without any trouble, and after the tapping, a cleaning step using a Freon-based cleaning solution can be completely eliminated, but alignment of the tapping is troublesome. Workability,
Further improvements in efficiency have been desired.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and is intended to supply cutting oil necessary for tapping to such an extent that the tap can be cooled and wear can be prevented. With a very small amount of supply, tapping to the work can be performed properly without hindrance, and after tapping, a cleaning process using a Freon-based cleaning solution can be completely eliminated for the work. It is an object of the present invention to provide a device for supplying cutting oil to a tap in tapping with good efficiency.

[0006]

In order to solve the above-mentioned problems, a first technical means adopted by the present invention is to provide a cutting oil supply device to a tap which penetrates a work up and down by a substantially rectangular parallelepiped work. The work support, the work support is provided with a vertical cavity in which an elastic porous member is inserted, and a cutting oil reservoir having a predetermined capacity, and the cavity and the cutting oil reservoir are provided. Parts near the bottom of the cavity are communicated with each other, and a cap having a tap insertion hole is removably covered at the upper end of the cavity, and the upper surface of the cap forms a horizontal work mounting surface; A magnet is provided at the bottom of the support.

Conventionally, the cutting oil is supplied from a separately provided cutting oil tank to the cutting oil supply device via a flexible pipe. However, a primary object of the present invention is to supply a very small amount of cutting oil to a tap. Thus, it was found that tapping work for about one day can be performed with the amount stored in the support without the need for much cutting oil. Further, since the cavity is filled with the elastic porous member and the cavity and the vicinity of the bottom of the cutting oil reservoir are communicated with each other, the cutting oil is gradually supplied to the cavity and absorbed by the elastic porous member. The held and held taps are wiped to remove the chips adhering to the taps and to attach an appropriate amount of cutting oil. Furthermore,
Most of the mounts used for tapping are magnetic,
Paying special attention to the fact that it is made of iron, by providing a magnet at the bottom of the support, the support can be attached to and detached from the pedestal without requiring any other members, and fixed with screws etc. as in the past Without this, it is possible to provide the support at an arbitrary position corresponding to the elevating position of the tap.

A second technical means employed in the present invention relates to an improvement of the first technical means, wherein a device for supplying a cutting oil to a tap vertically penetrating the work is provided by a substantially rectangular parallelepiped work support. And a first vertical cavity portion into which an elastic porous member is inserted is provided at one end in the length direction of the work support, and is formed low at the other end in the length direction. A step portion is provided and a vertical second cavity portion is provided in the step portion, and a cutting oil storage portion having a predetermined capacity is provided between the two cavity portions and between the two cavity portions through a partition wall. A supply path is formed at a lower end portion of the partition wall to communicate the two cavity portions with the cutting oil storage portion, and a cap having a tap insertion hole is detachably attached to an upper end portion of the first cavity portion. And a top surface of the cap forms a horizontal work mounting surface, and a magnet is provided at a bottom portion of the support. Is shall.

According to this structure, since the second cavity formed in the step is provided and the cutting oil reservoir and the two cavities communicate with each other, the upper limit of the height of the cutting oil is limited to the second cavity. That is, the second cavity regulates the amount of oil so that the cutting oil does not overflow from the cutting oil reservoir or the first cavity and adhere to the lower surface of the work. Has become. Further, even in the case where the configuration in which the cutting oil reservoir is cup-shaped and the cover is removably covered at the upper opening is adopted, the provision of the second cavity allows the inside of the second cavity to be formed. The remaining amount of the cutting oil can be known from the height of the cutting oil, and the second oil can be obtained without overflowing the cutting oil.
Cutting oil can also be supplied from the cavity.

A third technical means employed in the present invention relates to a tapping method, which has a shape corresponding to the planar shape of the bottom of the work support and receives the bottom. A plate-like body having a required number of notches having dimensions is prepared at a desired position, the plate-like body is placed on a gantry, and a work support is fitted to the notch of the plate-like body placed on the gantry. The work support is positioned by providing the work support, and the work is placed on the upper surface of the work support to perform tapping.

In the support of the present invention, it is necessary to provide the support so that the insertion hole of the tap provided in the cap of the support faces the ascending / descending position of the tap. Therefore, a notch is provided in advance in a portion corresponding to the mounting position of the support on the plate-like body, such a plate-like body is placed on a gantry, and the support is easily positioned by mounting the support in the notch. It can be carried out. Therefore,
If several types of plate-like bodies having cutouts at predetermined tap positions corresponding to the respective tapping processes are prepared in advance, it is possible to easily adjust the position of the support when changing work.

[0012]

Embodiments of the present invention will be described in detail with reference to the accompanying drawings. The cutting oil supply device according to the present invention is used for both a single-axis tap and a multi-axis tap, but is preferably used for a multi-axis tap. The tapping operation itself is performed by a conventional tapping machine (not shown), and tapping is performed by tapping a predetermined portion of the placed work vertically. A cutting oil supply device according to the present invention is provided below a work and at a position where a tap is moved up and down so as to supply a necessary and minimum amount of cutting oil to a tip portion of a tap penetrating the work. It was done.

FIG. 1 is a perspective view of a cutting oil supply device according to the present invention, FIG. 2 (a) is a plan view of the device, FIG. 2 (b) is a plan view of a state in which a cap and a cover described later are removed, and FIG. ) Is a bottom view. The cutting oil supply device has a roughly rectangular parallelepiped shape.
A first vertical cylindrical portion 2 having an opening upward is provided on the upper surface at one end in the longitudinal direction of the work support, and the other end in the longitudinal direction is provided. On the side, a step portion 3 constituting a lower surface than the other upper surface is formed, and the step portion 3 is provided with a cylindrical vertical second hollow portion 4 having an opening at an upper side.

A cutting oil reservoir having a predetermined capacity is provided between the first cavity 2 and the second cavity 4 via partition walls 6 and 7 between the two cavities 2 and 3. . In the embodiment, a vertical cutting oil cup 5 having an upper opening is shown as a cutting oil reservoir. As is clear from FIG.
The bottom of the cavity 2, the second cavity 4, and the bottom of the cutting oil cup 5 are substantially on the same plane, but since the second cavity 4 is provided in the step 3, the upper end of the second cavity 4 has 1 is located at a position lower than the upper end of the cavity 2 and the cutting oil cup 5.

At the lower end portions of the partition walls 6 and 7, there are provided supply passages 8 and 9 in the form of fine holes, and the first cavity 2, the second cavity 4,
The portions near the bottom of the cutting oil cup 5 communicate with each other. Therefore, when the cutting oil is supplied to the cutting oil cup 5 or the second cavity 4, the supplied cutting oil flows through the supply paths 8, 9 provided in the partition walls 6, 7, and is shown in FIG. As described above, the height L of the cutting oil in the first cavity 2, the second cavity 4, and the cutting oil cup 5 becomes equal.

As described above, since the upper end of the second cavity 4 is set at a low position, the upper limit of the amount of cutting oil is restricted by checking the amount of oil in the second cavity 4. ,
When the cutting oil is supplied, the oil does not overflow. Therefore, the cutting oil cup 5 can always contain a proper level of cutting oil, and the adhesion of the cutting oil to the lower surface of the work can be prevented.

An elastic porous member 10 such as a sponge is removably inserted into the first hollow portion 2 so as to absorb and hold cutting oil supplied from a supply passage 8 provided in the partition wall 6. Has become. The elastic porous member 10 is not limited to a sponge, but may be any material that absorbs and retains cutting oil, and removes and retains cuttings attached to the tap. A cap 12 having an insertion hole 11 for a tap T at the center thereof is removably covered at the upper end of the first hollow portion 2, and a top surface of the cap 12 supports a work W in a horizontal shape. -The mounting surface is formed.

More specifically, the upper end edge of the cylindrical first hollow portion 2 provided in the longitudinal direction extends slightly upward from the upper surface at one end side in the length direction of the support 1 so as to extend in a circular shape. A piece 13 is formed, and a circular cap 12 having a diameter slightly larger than the diameter of the extension locking piece 13 is attached from above. However, the shape of the cavity or the shape of the cap is not limited to the circular shape in the embodiment. As shown in FIG. 4, the upper end of the sponge 10 filled in the first hollow portion 2 extends to near the upper end of the extension locking piece 13, and the tap descends from the insertion hole 11 provided in the cap 12. The tip of T is ensured to enter the sponge 10.

The cavity of the cutting oil cup 5 exemplified as a cutting oil reservoir has a substantially rectangular parallelepiped shape, and has dimensions of about 1.5 cm × 4 cm × 2 cm in height, width and height. Of course, the size of the cutting oil storage section is not particularly limited, but it is considered that a sufficient amount of cutting oil can be stored for tapping for one day with such a capacity.

The outer wall at the upper end of the cutting oil cup 5 is formed in a concave shape, and the engaging portion 14 of the cover 15 is formed so that the cover 15 can be detachably mounted. By attaching the cover 15, dust and dirt do not enter the cutting oil. The amount of cutting oil in the cutting oil cup 5 cannot be seen because the cover 15 is provided.
The second cavity 4 is communicated with the second cavity 4 at its bottom, so that the amount of oil in the cutting oil cup 5 can be known by checking the height of the oil in the second cavity 4. The second hollow portion 4 is not usually provided with a cover, but the second hollow portion 4 and the cutting oil cup 5 are provided with a fine supply passage 9 provided at a lower end portion of the partition wall 7.
Therefore, even if dust or dirt enters the second hollow portion 4, movement to the cutting oil cup is prevented as much as possible.

In the embodiment, the cutting oil reservoir is constituted by a cutting oil cup 5 having an opening at the top, and the opening is formed by a cover 15.
The cutting oil storage portion may be formed from a hollow portion provided inside the main body of the support 1, and the cutting oil is supplied from the second hollow portion in this case. Will be done.

A groove 16 is provided in the bottom of the support 1 in the longitudinal direction, and a rectangular plate-shaped magnet 17 is provided in the groove 16. Bottom of support 1 and cap 12
Has a horizontal surface so that the work W can be placed horizontally. Usually, the gantry 18 used for tapping is made of a magnetic material such as iron.
By providing the magnet 17 on the bottom surface of the support 1, the support 1 can be detachably provided at an arbitrary position on the gantry 18 as illustrated in FIG. 5. The shape of the magnet or the configuration for providing the magnet is not limited to that of the embodiment, but the point is that the magnet may be provided on the support so that it can be detachably mounted on the gantry. The phrase "provided with a magnet at the site" means that the lower part of the support itself or the whole including the lower part is constituted by magnets.
The material of the support body itself is not particularly limited, but is made of, for example, iron or aluminum.

FIG. 6 shows a work prior to the tapping operation.
FIG. 4 is a schematic plan view of a member for positioning the support. The positioning member is composed of a plate-like body 19, and the plate-like body 19 is provided with a notch 20 having a shape corresponding to the planar shape of the bottom of the work support 1. The shape of the notch does not have to be exactly the same as the shape of the bottom of the support, but may be any shape that can be positioned, and may be, for example, a rectangle in plan view. The notch 20 is formed to be substantially the same as or slightly larger than the bottom surface of the work support 1, so that the work support 1 can be positioned by receiving the work 1 support and mounted on the gantry at the same time. Has become. A required number of notches 20 are provided in a predetermined portion so that when the plate-shaped body 19 is mounted on the gantry, the support attached to the notch corresponds to a predetermined tapping operation. Is mounted or fixed at a predetermined position on a gantry, for example.

In order to perform tapping by using the cutting oil supply device configured as described above, first, as shown in FIG.
The desired number of supports 1 are magnetically attached to a predetermined portion of the gantry 18 with the insertion hole 11 provided in the cap 12 facing the elevation position of the desired number of taps T. The support 1 may be directly disposed on the gantry, but the plate-like body 19 provided with the desired notch 20 as described above is placed on the gantry, and the notch 20 of the plate-like body placed on the gantry is placed. If the support 1 is mounted on the support, positioning can be performed efficiently. The plate-shaped body 19 may be placed on the cradle as it is, or may be removed after positioning the support.

The supply of the cutting oil to the cutting oil reservoir of the support may be performed before the support 1 is mounted on the gantry 18 or may be performed after the support 1 is mounted on the gantry. . The cutting oil may be supplied directly to the cutting oil cup 5 with the cover 15 removed, or may be supplied from the second cavity 4. In any case, since the upper end of the second cavity 4 becomes the upper limit of the amount of the cutting oil, if the cutting oil is supplied in accordance with the second cavity 4, the cutting oil will not overflow. Absent.

Next, the work W is placed on the cap 1 of the support 1.
2 and fixed using a jig or the like. However, when a plurality of supports are provided, the upper surfaces of the caps of the plurality of supports support the work. There is no need to provide a support member for the workpiece. However, when the mounting portion of the support is unevenly distributed, it is optional to provide a support member to support the work.

Then, tapping is performed. Cutting oil is supplied from a cutting oil storage unit to the first cavity 2 of the work support 1 fixed to the gantry, and is accommodated therein. Since the elastic porous member 10 as shown in FIG.
Tap T penetrating work W and entering first cavity 2
Since only a small amount of cutting oil that cools the tap and prevents wear and that does not interfere with tapping adheres to the tip of And a small amount of cutting oil adhering to the machined screw hole dries quickly because the cutting oil used is volatile. For this reason, after tapping, the step of cleaning the work with a chlorofluorocarbon-based cleaning solution becomes unnecessary.

[0028]

Since the present invention has the above-described configuration, it has advantageous effects as compared with the conventional one described below. (1) By providing the magnet on the bottom surface of the support, the support can be easily attached to and detached from the gantry, and the support can be easily provided at any position corresponding to the tapping position. So, corresponding to the tap mounting position,
There is no need to adjust and fix the support through the mounting screws,
Work can be performed efficiently. (2) Since the cutting oil reservoir is provided in the support body and the bottom of the cavity filled with the elastic porous member and the reservoir communicate with each other, the cutting oil is supplied from the reservoir to the cavity. An appropriate amount of cutting oil is held in the elastic porous member, and there is no need to separately provide a cutting oil tank or a cutting oil supply pipe as in the related art. (3) Further, since the cutting oil reservoir and the first cavity are communicated with the second cavity provided in the stepped portion, the upper end of the second cavity becomes the upper limit of the amount of cutting oil, and the second cavity becomes the upper limit. The amount of cutting oil is regulated by the cavity, and by adjusting the amount of oil to the second cavity, it is possible to prevent the cutting oil from overflowing. In addition, since the position of the upper surface of the oil in the second cavity is equal to the position of the oil in the first cavity and the cutting oil reservoir, the remaining amount of the cutting oil can be known from the amount of oil in the second cavity, which is necessary. The cutting oil can also be supplied from the second cavity according to. (4) In the processing method using the plate-shaped body provided with the notch, the support can be easily positioned, and the work efficiency at the time of mounting the support can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view of a cutting oil supply device.

2 (a) is a plan view of a cutting oil supply device, FIG. 2 (b) is a plan view of the same with a cap and a cover removed,
(C) is a bottom view of the same.

FIG. 3 is a side view of the cutting oil supply device.

FIG. 4 is a side view of the cutting oil supply device with a cap and a cover removed, showing a part of the inside;

FIG. 5 is a schematic plan view showing a state where a plurality of cutting oil supply devices are mounted on a gantry.

FIG. 6 is a plan view of a plate-like body.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 work support 2 first cavity 3 stepped portion 4 second cavity 5 cutting oil supply cup 6 partition wall 7 partition wall 8 supply path 9 supply path 10 elastic porous member 11 insertion hole 12 cap 17 magnet 18 mount 19 Plate-shaped body 20 Notch T tap W Work

Claims (3)

[Claims] An apparatus for supplying cutting oil to a tap vertically penetrating a work is constituted by a substantially rectangular parallelepiped work support.
The support has a vertical cavity in which an elastic porous member is inserted, and a cutting oil reservoir. The cavity and the vicinity of the bottom of the cutting oil reservoir communicate with each other. A cap having a tap insertion hole is removably covered with the cap, an upper surface of the cap forms a horizontal work mounting surface, and a magnet is provided at a bottom of the support. For supplying cutting oil to taps during tapping. 2. A device for supplying cutting oil to a tap vertically penetrating the work, comprising a substantially rectangular parallelepiped work support.
A first vertical cavity portion in which an elastic porous member is inserted is provided on the upper surface at one end in the length direction of the support, and the upper surface at the other end in the length direction is formed lower to form a step. A stepped portion is provided with a second vertical cavity portion, a cutting oil storage portion is provided between the two cavity portions and between the two cavity portions via a partition wall, and is supplied to a lower end portion of the partition wall. A path is formed to communicate the two cavity portions with the cutting oil storage portion. A cap having a tap insertion hole is removably covered at the upper end portion of the first cavity portion, and the upper surface of the cap is horizontal. A cutting oil supply device for tapping in tapping, wherein a work mounting surface is formed, and a magnet is provided at the bottom of the support. 3. A plate-like body having a shape corresponding to the planar shape of the bottom of the work support according to claim 1 and having a required number of cutouts in a desired portion having dimensions for receiving the bottom. The work piece is placed on a gantry, and a work support is provided on the gantry in accordance with the notch of the work piece placed on the gantry, thereby positioning the work support. A tapping method wherein a work is placed on an upper surface of a cap provided on a work support to perform tapping;