JPS59152041A - Switching device for machining liquid path - Google Patents

Abstract

PURPOSE:To make a switching device for machining liquid path in simple construction and small size by constituting it with No.1 pressure means, which presses a valve seat mouth on the coupling outlet side to the block position, and No.2 pressure means, which provides a greater pressure than No.1 pressure means. CONSTITUTION:A reception hole 8, pour-out hole 9, communication outlet 10 and path changing means 11 are fixed to the bottom surface of the spindle head as in a lump with a spindle head addition device 28 formed as in a single piece. No.1 pressure means 25 operates a valve element 24 so as to the valve seat mouth 23 on the couling outlet side to the block position. No.2 pressure means 27 housed between this and a lid 50 presses a transmission member 26 upward. In normal holding/fitting condition, pressed by No.1 pressure means 25 to open the valve seat mouth 22, so that the machining liquid is introduced to the pour- out hole 9. In the condition fitted with a holder with hole, against the means 25 to No.2 pressure means 27 through the transmission member 26 open the valve seat mouth 23 to introduce the machining oil to the hole 3. Thus automatic switching is accomplished.

Description

DETAILED DESCRIPTION OF THE INVENTION (Related Technical Field) The present invention provides a method for directing cutting fluid near the blade, as in an embodiment of the present invention shown in FIG. 1 as a partial sectional view and as shown in FIG. 2 as a partial plan view. A cutter with a hole (2) that has a through hole (1) for guiding and pouring.
) and a holder (4) with a hole (3) that guides the cutting fluid to the through hole (1), and a holder (5) with a hole that holds a regular cutting tool (5) that does not have a through hole (1) and leads the cutting fluid to the through hole (1). ) In a machine tool equipped with a mounting part (7) that can be mounted interchangeably for processing using each cutting tool (2) and (5) with a normal holder (6) that does not have a
A holder with a hole (4) and a regular holder (6) are attached to the attachment part (7).
), the cutting fluid path switching device automatically switches the path for supplying the cutting fluid depending on which one is installed.

(Prior Art) In this type of device known in the past, similar to the conventional example whose route diagram is shown in FIG. There is a receiving port (8) for receiving cutting fluid from a fluid source, and a spout (8) that opens toward the position of the normal cutting tool (5) held by the normal holder (6) attached to the mounting part (7). 9), a connecting outlet OQ to be connected to the connecting inlet (described later), and the cutting fluid received in the receiving inlet (8) is guided to the connecting outlet α0 only during the time when it is engaged with the controlling means described later, and is connected to the spout (9) during other times. ), and is attached to the holed holder (4) to connect it to the mounting part (7
), which is the state in which the holed holder is attached, connects the connection inlet (2) that communicates with the connection outlet OQ and maintains airtightness to the outside, and connects this connection inlet @ to the liquid hole (3). It is provided with a liquid hole communication path α■ communicating with the liquid hole, and a control means a41 that engages with the path changing means 0η only when the holder with holes is attached, thereby, when the holder (4) or (6) is attached. Some devices automatically switch the cutting fluid path to suit each holder.

As for the specific structure of the path changing means αυ and the control means α, conventionally, as shown in the cutting fluid path diagram in FIG. (9) and the connecting outlet 00, the branching path (g), the path leading to the spout (9), when the normally open solenoid valve a is closed only when energized, and the path leading to the connecting outlet 00, when energizing. It is equipped with a normally closed solenoid valve αη that only opens only, and a control switch (g) and α rit that shuts off energization to both solenoid valves rs and α in normal times and energizes them only when they are engaged with the control means (b). As a specific structure of means a4, the surface control switch (
Some valves were equipped with a protrusion that engaged with the M and α forces of the solenoid valves and energized both the M and α forces.

However, according to this conventional method, both solenoid valves 0→・σ
Since the size of η is large and expensive, and both switches (G), θ and electric wires for power supply are involved, the vicinity of the mounting portion (7) is complicated and the overall cost is high.

(Object of the Invention) The present invention provides a cutting fluid path that does not have any of the drawbacks of the conventional ones, by using something completely different from the conventional ones as the path changing means αη and the controlling means α→. The purpose is to obtain a switching device.

(Structure of the Invention) In order to achieve the above object, the cutting fluid path switching device of the present invention, as in the embodiment shown in FIGS. (8), and a spout-side valve seat opening (A) that faces each other and opens into the valve chamber (C) and communicates with the spout (9) and the connecting outlet QO, respectively. Connection outlet side valve seat opening (goods) and valve chamber Q]
), the valve body (c) can reciprocate between the positions that respectively close the spout side valve seat opening ■ and the connected outlet side valve seat opening (goods), and the valve body (c) is connected to the outlet side valve seat opening ( C), and a first biasing means (A) which biases the fluid hole towards the position where it is blocked, and the control means α4 is located within the fluid hole communication path (to) and in the state where the holed holder is attached. The transmission member (E) that engages with the valve body Qυ through the connection port @ and the connection outlet αO, and the valve body (goods) via the transmission member (E) to a position that blocks the spout side valve seat opening (A). The second biasing means (e) biases toward the
It is characterized in that it includes a biasing means.

In this embodiment, the mounting part (7) is provided at the lower end of the main shaft which can freely rotate around a vertical line, and the main shaft head supporting the main shaft and the main shaft head supporting the main shaft horizontally and reciprocatingly in the radial direction are attached to the center of the vertical column. The present invention is applied to a radial drilling machine equipped with an arm that can reciprocate in the horizontal rotational direction and in the vertical direction, and the holders (4) and (6) are attached to the attachment part (7) by approaching from below. By this attachment, the connecting outlet a1 and the connecting inlet (2) are connected, and the route change means ση and the control means α are engaged with each other.

The receiving port (8), the pouring port (9), the connecting port 00, and the route changing means (6) are integrated into an integrated spindle head adding device holder.
It is fixed to the lower end surface of the spindle head. In the path changing means αυ, the valve chamber e◇ has a downward hole in the valve chamber body 01J (
7) to maintain airtightness to the outside and block the valve chamber with a valve chamber lid 0]), and connect the intake passage (
8). The spout side valve seat opening (goods) is the valve chamber (c)
It opens at the upper end of the valve chamber body and communicates with the spout (9) via a vertical passage (toward), a horizontal passage (toward), and a spout pipe (2). In the valve chamber lid clη, a connecting outlet side valve seat opening is opened at the lower end portion of the valve chamber Q◇, and a connecting outlet α1 is connected thereto. The valve body (C) is a plastic sphere that can freely reciprocate up and down within the valve chamber Q◇. The first biasing means (c) is housed in the vertical step and biases the valve body (c) toward a position where it closes the valve seat opening (2) on the connection outlet side. There is an O-ring on the inner periphery of the connection outlet αQ that is interposed between the outer periphery of the connection inlet (6) in a connected state and maintains airtightness from the outside.

The control device α fathom and the liquid hole communication path (to) are combined into an integrated holed holder attachment device (b), and rotated concentrically with the rotation center line in the installed state. It is attached freely. The attached device for the holder with a hole @ is the holder with a hole (
4), and two O-rings (to) are provided between the opposing concentric rotating surfaces of the communication passage (to) and the holed holder (4). A first airtight space (2) is created between the two intervening portions by interposing the airtight space (2) in an airtight manner, and the liquid hole (3) is communicated with this, thereby creating a first airtight space within the communication passage (to). The rear communication passage (6) communicating with 0η is connected to the liquid hole communication passage (
(to) as part of the The communication passage body) is equipped with a cylindrical guide tube inserted from below by vertically penetrating the part directly below the connection outlet QO when the holed holder is attached, and the upper end of the guide tube is inserted into the connection entrance QO. (2) The 0 ring (to) is sandwiched between the 0 ring and the connecting outlet 00 in an airtight manner to the outside. Two O-rings are interposed between the opposing fitting surfaces of the guide tube and the communication passage body to maintain airtightness, and a second airtight seal is created between the two intervening parts. A space) is created, and this second airtight space is communicated with the inside of the guide tube through a number of communication holes @η drilled in the guide tube.

The guide tube (goods) is fixed by placing its shoulder circumference against the stage ■ of the communication passage body (to) and sandwiching it between the clasp ring fixed to the lower surface of the communication passage (to).

The Fusagibuta So is 01Jng←ρ to keep the airtightness to the outside and close the lower end of the guide tube.

The transmission member (2) has a cylindrical shape, fits vertically freely within a limited area inside the guide tube, and is biased upward by the second biasing means (b) housed between the lid and the lid. Forced,
With the holed holder shown in the figure attached, the valve body (c) is pushed against the first biasing means (c) toward a position where it closes the spout side valve seat opening.

At the upper end of the transmission member (e), there are four notches □□□ that serve as passages for cutting fluid in the illustrated state. In the transmission member (e), a large cutout ring is provided near the communication hole 071 of the guide tube (material) to communicate between the inside and outside. The internal space of the transmission member (e) from the incision (e), the missing part, the communication hole (b), the second airtight space), and the subsequent communication path (6) collectively constitute the liquid hole communication path (to). do.

According to the cutting fluid path switching device of the present invention, the valve body of the path changing means (b) normally has a holder attached to it.
The first biasing means (c) closes the valve seat on the connection ratio side and opens the valve seat on the spout side. ), and when the holed holder is attached, the second urging means (c) resists the first urging means (c).
The valve seat opening on the spout side is closed and the valve seat opening on the connecting outlet side is opened (to) by being biased via the transmission member holder, and the cutting fluid is transferred to the connecting outlet 00. The cutting fluid is guided to the fluid hole (3) through the fluid hole communication path θ, and in this way, depending on whether the cutting tool used is a regular cutting tool or a cutting tool with a hole, the original cutting fluid path is automatically switched to the appropriate one. In addition to the performance of the function, the structure of the path changing means αυ and the control means Q4) is much simpler, smaller, and cheaper than the conventional example, and is much superior to the conventional example. The above-mentioned drawbacks, such as those mentioned above, are completely eliminated.

In the embodiments shown in Figs. 1 and 2, the holed holder attachment device (b) is not fixed to the holed holder (4) and is made rotatable because the main shaft is rotating. The holder with a hole (4) rotates through the attachment part (7), while the holder attachment device (b)
This is because it is necessary to maintain a constant position relative to the spindle head addition device (c) fixed to the stationary spindle head through the connection to the spindle head. When using an automatic tool changer that automatically exchanges multiple holders including the holder with holes (4) in a fixed order, the connection entrance (6) and the holder with holes (4) are installed. A special device is required to ensure the connection with the connection outlet αQ.

When attaching the holder (4) or (6) to the attachment part (7), the arm and spindle head, and therefore the direction of the spindle head and the position of the spindle center, should be kept constant, and the spindle and the attachment part (7) should be fixed when the rotation is stopped. ) direction is also constant. There is a protrusion protruding downward on the attachment part (7). The parts of the holder with a hole (4) and the normal holder (6) that engage with the mounting part (7) have exactly the same shape and dimensions, and are located close to the mounting part (7) and have a protrusion in the mounted state. - is provided with a recessed part into which - is fitted, and below it there is a groove 67) extending all around the circumference concentrically with the rotation center line. When attaching and detaching, grasp the Mizosuke and move it upward and downward.

Below the six grooves, there is a notch that engages with the rotation stopper described later.

Place a vertical guide gel (M) on the upper side of the communication channel (to) of the holder accessory (b), and attach the headed guide bolt (to).
and the guide tube (■), and is non-rotatable and can freely reciprocate within a certain range limited by the head of the guide bolt (to) and the communicating passage body (to) in the vertical direction; This is urged upward by a spring 6I), and can be fitted into the notch at the upper limit position where it hits the head of the guide bolt (E).
Guide cylinder (Treasury) with the retaining ring stuck in the notch
The connection entrance at the upper end protrudes slightly from the upper surface of the detent. In the illustrated state in which the holed holder is attached, the rotation stopper is pressed down against the spring Oυ by the lower surface of the valve chamber cover η of the spindle head addition device (c), and is prevented from fitting with the notch. It's off.

The four parts - hold the holed holder (4) with the holder attachment device (b) in which the rotation stopper is stuck in the notch.
The position of the notch is determined so that the connection inlet (6) fits in with the connection outlet OQ when keeping it in the direction in which it fits into the protrusion of the mounting part (7) in the fixed direction.

With this structure, the holed holder (4) to be attached is firmly grasped by its groove 6''i), and the concave portion is oriented so that it directly faces and fits into the protrusion of the attachment portion (7) in the fixed position. When holding the retainer and attaching it, the connection inlet @ connects smoothly to the connection outlet 00, and when the attachment is completed, the notch and the retaining ring are disengaged, and the hole opens against the retainer attachment device (b). The attached holder (4) can now be rotated freely.

[Brief explanation of the drawing]

1 and 2 relate to one embodiment of the present invention, FIG. 1 is a sectional view taken along the line A-A in FIG. 2, and FIG. 2 is a cross-sectional view taken along the line B-B in FIG.
FIG. FIG. 3 is a cutting fluid path diagram of a conventional example. (2)...Cutter with hole (3)...Liquid hole (4)...Holder with hole (5)...Normal cutter (6)...Normal holder (7) ... Mounting part (8) ... Inlet port (9) ... Outlet α0 ... Connection outlet αυ ... Route changing means (6) ... Connection entrance (to) ... Liquid hole connection Passage α→... Control means (goods)... Valve chamber (a)... Outlet side valve seat mouthpiece... Connection outlet side valve seat mouth (c)... Valve body (c)... ...First biasing means (1)...Transmission member (foundation)...Second biasing means Patent applicant Aichi Tokei Denki Co., Ltd. Commissioner of the Japan Patent Office Examiner of the Japan Patent Office 1. Display of case Showa S Patent Application No. 2tgO1 No. 2,
Title of the invention v1f Rei Sumibushi Nishi 9 Todore Keidan 3, Relationship with the case of the person making the amendment Patent applicant 4, Agent 5, Date of notice of reasons for refusal Showa Year Month
Day 6, number of inventions increased due to amendment 7, drawings subject to amendment

Claims (1)

[Claims] In a machine tool equipped with a mounting part that can be attached interchangeably with a holder with a hole that holds a cutting tool with a hole and has a liquid hole for guiding cutting fluid thereto, and a normal holder that holds a normal cutting tool and has no liquid hole. , a receiving port for receiving cutting fluid from a fluid source near the mounting part; a spout opening toward the position of the normal cutting tool held by the normal holder mounted on the mounting part; and a connection described below. A connecting outlet to be connected to the inlet, and a route changing means for guiding the cutting fluid received in the receiving opening to the connecting outlet only during the time when it is engaged with the control means described later, and guiding it to the spout during other times, and , attached to the holed holder,
Only when the holder with a hole is attached, which is a state in which this is attached to the attachment part, is a connection inlet that communicates with the connection outlet and is airtightly connected to the outside, and communicates the connection inlet with the liquid hole. A cutting fluid path switching device comprising: a fluid hole communication path; and a control means that interacts with the path changing means only when the holed holder is attached, the path changing device communicating with the receiving port. a spout-side valve seat opening and a connecting outlet-side valve seat opening that face each other and open into the valve chamber and communicate with the spout and the connecting outlet, respectively; a valve body that can reciprocate between positions that respectively close the valve seat opening and the connection outlet side valve seat opening; and a first attachment that urges the valve body toward a position that closes the connection outlet side valve seat opening. a transmission member that is located in the liquid hole communication path and engages with the valve body through the connection inlet and the connection outlet when the holed holder is attached; A cutting device characterized by comprising a second biasing means for biasing the valve body through a transmission member toward a position where it closes the spout-side valve port with a force greater than that of the first biasing means. Liquid path switching device.