JPS6035571Y2 - Cutting agent supply mechanism to the pressure head of a deep hole drilling machine - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] The present invention relates to a deep hole drilling machine, and in particular, a deep hole drilling machine that performs deep hole drilling while supplying high-pressure cutting agent to the vicinity of the outer periphery of the tip of a tubular saw-shaped boring bit through a pressure device. This invention relates to improvements in the pressure head cutting agent supply mechanism of the plate.

[Technical background of the invention and its problems]

As a device for machining deep holes where the hole depth is larger than the hole diameter,
A deep hole drilling machine is known that uses a hollow tubular serrated boring tool, supplies high-pressure cutting fluid near the outer periphery of the tip of the tool, and performs deep hole drilling while expelling chips along with the cutting fluid through a passage inside the tool. It is being

In this way, in a deep hole drilling machine, high-pressure cutting fluid is supplied through pressure units arranged so as to come into contact with the end surface of the workpiece.

FIGS. 1 and 2 are diagrams showing an example of pressure types conventionally used in deep hole drilling machines.

The pressure class 10 has a saddle 21 and a pressure table 22 divided into two parts.
It has a pressure chamber 11 into which a cutting agent such as cutting oil is supplied, and a hollow pipe-shaped boring bar 12 is inserted through the pressure chamber 11.

A boring tool 13 for drilling holes is attached to the tip of the boring bar 12.

The boring tool 13 has a hollow cylindrical shape, and has a so-called tube saw shape with a cutting blade 13a attached to the tip.

A cylindrical sealing member 14 is attached to the tip 10a of the pressure unit 10, and by bringing this sealing member 14 into contact with the machining side end surface of the workpiece W to be drilled, high pressure from the pressure chamber 11 is removed. The cutting agent can be supplied to the vicinity of the outer periphery of the tip of the cutting tool 13.

Cutting fluid is supplied to the pressure chamber 11 of the pressure class 10 from an external cutting fluid supply source (not shown). and the other end of this hollow pipe 16 is connected and fixed using a flange 19 and bolts 20 to a block 18 in which a cutting fluid communication passage 17 communicating with a cutting fluid supply source is formed. It is carried out by

However, according to such a cutting agent supply mechanism, there is a problem in that when replacing the pressure type 10 according to the diameter of the boring tool 13, it is difficult to connect the pressure type 10 and the cutting agent supply mechanism.

That is, the tip of the pipe 16 is connected to the supply port 15 of the pressure class 10.
The saddle 21 is screwed into the rear stage using the flange 19.
Since the structure is such that the bolts are tightened to the block 18 fixed to the saddle 21, due to squareness error of the screw, error to the flange end face, etc., the supply of the pressure class 10 fixed to the saddle 21 by the pressure table 22 divided in two may be affected. It was difficult to perform accurate alignment with the opening 15, and it took a long time to set up the pressure equipment 10 when replacing it.

[Purpose of invention]

This invention was made with these points in mind,
The purpose of this invention is to provide a cutting agent supply mechanism for the pressure parts of a deep hole drilling machine, which can be easily connected and shorten the setup time when replacing the pressure parts.

[Summary of the idea]

In the cutting fluid supply mechanism to the pressure equipment of a deep hole drilling machine according to the present invention, the cutting fluid supply port is opened at the bottom of the pressure equipment, and the cutting fluid supply passage opening communicating with the cutting fluid supply source is opened at the top surface of the saddle. Additionally, the supply port and the supply passage port are connected by a removably inserted hollow pipe.

With this structure, when replacing pressure equipment and installing it on the top of the saddle, the supply port of the pressure equipment and the supply passage opening on the top of the saddle can be connected simply by inserting a hollow pipe. The processing time can be significantly reduced.

[Example of idea]

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 3 and 4.

The pressure unit 30 has a pressure chamber 31 inside which a cutting agent is supplied, and a hollow pipe-shaped boring bar 12 is inserted through the pressure chamber 31.

A tube-serrated boring tool 13 is attached to the tip of the boring bar 12.

A seal member 34 is disposed circumferentially at the tip 30a of the pressure table 30a.
is attached, and this seal member 34 is brought into contact with the end surface of the workpiece W to be drilled.

Further, the front side of the pressure chamber 31 opens into a region surrounded by a seal member 34, and the rear side is sealed by a seal member 35 that slides into contact with the outer periphery of the boring bar 12.

A cutting agent supply port 36 is bored in the bottom of the pressure unit 30,
A rear portion of a hollow pipe 37 is screwed into this supply port 36 .

A cutting fluid supply passage port 39 is opened in the upper surface of the saddle 38 on which the pressure type 30 is placed, and this supply passage port 39 is a cutting fluid supply passage port connected to a cutting fluid supply source (not shown). It communicates with 40.

The front portion of the hollow pipe 37 is removably inserted into the supply passage opening 39, thereby connecting the supply opening 36 and the supply passage opening 39.

A sealing O-ring 41 is installed between the hollow pipe 37 and the supply passage port 39.

According to the cutting fluid supply mechanism for the pressure class having such a configuration, when the pressure class 30 is placed on the saddle 38, such as when replacing the pressure class 30, the pressure class 30 is divided into two parts. The pressure table 42 is assembled into the pressure table 42, and the pressure table 42 is lowered straight from above the saddle 38, and the front part of the hollow pipe 37 is inserted into the supply passage port 39, and the pressure type 30
It can be connected to the supply port 36 of.

As a result, high-pressure cutting fluid is transferred from the cutting fluid supply source to the supply passage 4.
0, it is supplied into the pressure chamber 31 through the supply passage port 39, the hollow pipe 37, and the supply port 36, and is sent to the outer periphery of the tip of the boring tool during deep hole drilling.

[Effect of idea]

As explained above, according to the present invention, when replacing the pressure equipment, the pressure chamber of the pressure equipment and the cutting fluid supply passage can be simply and easily connected, and the setup time can be significantly shortened. can.

In addition, since the cutting fluid supply passage is formed inside the table,
There is no need for piping around pressure equipment, and the operability of the deep hole drilling machine can be improved.

In addition, in this embodiment, the hollow pipe 37 is connected to the pressure class 3.
Although the example is shown in which it is fixed on the 0 side, it is fixed on the saddle 38 side,
It may be detachable from the supply port 36.

[Brief explanation of the drawing]

Figure 1 is a side sectional view showing the cutting agent supply mechanism to the pressure head of a conventional deep hole drilling machine, Figure 2 is a sectional view taken along the line ■-■ in Figure 1, and Figure 3
The figure is a side sectional view showing the cutting agent supply mechanism to the pressure head of the deep hole drilling machine according to the present invention, and FIG. 4 is a sectional view taken along the line TV-rV in FIG. 3. 12... Boring bar, 13... Boring bite, 30... Pressure head, 31...
... Pressure chamber, 36 ... Cutting agent supply port, 37.
...Hollow pipe, 38 ...Saddle, 39
... Cutting agent supply passage opening, 40... Cutting agent supply passage.

Claims (1)

[Claims for Utility Model Registration] 1. Pressure equipment is installed in a pressure chamber placed on a saddle and divided into upper and lower halves, and a high-pressure cutting agent is applied to the vicinity of the outer periphery of the tip of a tubular saw-shaped boring tool through this pressure equipment. In a mechanism for supplying cutting fluid to the pressure components of a deep hole drilling machine that performs deep hole drilling while supplying the cutting fluid, a cutting fluid supply passage opening communicating with a cutting fluid supply source is opened on the top surface of the saddle, and a cutting fluid supply passage opening communicating with a cutting fluid supply source is opened on the bottom surface of the pressure component. The cutting agent supply port is opened, and the supply passage port and the supply port are removable by a hollow pipe that passes through the lower part of the pressure table and is inserted into the supply passage port on one side and the supply port on the other side, respectively. A cutting agent supply mechanism for pressure products, characterized in that: 2. Utility model registration claim 1, characterized in that one side of the hollow pipe is fixed to a cutting fluid supply port of a pressurized type, and the other side is removably inserted into a cutting fluid supply port opened on the top surface of the saddle. Cutting fluid supply mechanism described in Section 2.