JPH07290333A - Automatic drill interchanging method for drilling machine - Google Patents

Abstract

PURPOSE:To store many drills in a small space by moving a tool via an auxiliary collet picking up the tool between a tool cassette and a tool post. CONSTITUTION:After prescribed machining is made, a drill Db fitted to a spindle 103 and requiring to be interchanged is removed and fitted via a tool post 115b. The spindle 103 requiring an interchange is lowered, and it discharges the fitted drill Db to another tool post 103 moved on X, Y axes. The spindle 103 is then lifted. The drill Db on the tool post 115b is moved via an auxiliary collet 109 picking up a tool. The lowered auxiliary collet 109 picks up the drill Db on the tool post 115b. The drill Db is discharged into a drill magazine 102b moved on the X, Y-axes.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a Z for holding a rotary tool.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an axially movable machine tool, and more particularly, to an automatic drill replacement method for a drilling machine for a printed circuit board or the like.

[0002]

2. Description of the Prior Art It is common practice in industrial machines to exchange new and old packages or objects or tools via intermediate stations. For example,
In spinning machines, as in Japanese Patent Application No. 45-60029, there are many examples in which they are exchanged in the Z-axis direction via an intermediate station. Further, it is known that the intermediate station is provided with one or more posts or pedestals for accommodating new and old packages or objects or tools with a space for moving in the Z-axis direction.

In order to replace a new / old package or an object or a tool, an auxiliary collet to be picked up and a pair of a collet and an auxiliary collet to be picked up are used. 9
It is usually practiced like 3408.

Further, in a machine tool, a collet to be picked up is connected to the spindle itself, and a tool is held by the picked up spindle to perform a working operation. It is, for example, a drilling machine that mounts a rotary tool on a machine tool that can move in the Z-axis direction for machining. Also, XY
A plurality of tools are stored in the tool cassette installed on the table, and the tool corresponding to the machining hole of the workpiece is moved to the position of the machining spindle by the XY table, and the tool is moved to Z
An automatic tool changer that is attached to and detached from an axially movable spindle has been a well-known technique by at least 1984. Further, it has been customary for a pair of a colleting spindle and an auxiliary collet to welcome a tool on a corresponding tool magazine in the Z-axis direction by an XY table.

[0005]

SUMMARY OF THE INVENTION An automatic exchanging device for new and old packages or objects originating from a textile machine such as the one described above is used for automatic tool exchanging of machine tools, and particularly for automatic drilling in printed circuit board drilling machines. It is intended to be applied to.

In exchanging the drill, the working table is moved, the required drill in the cassette is gripped by the auxiliary collet, this is supplied to one tool post, and then the working table is moved again to move the spindle to the other side. Position it on the tool post, release the gripping drill, then transfer to another tool post to grip the supplied drill and place the used drill on the other tool post in place in the cassette with the auxiliary collet. To supply.

[0007]

As a device for realizing an automatic drill changing method in a drilling machine of the present invention for achieving the above object, a processing table for moving a workpiece in a forward and backward direction and placing a workpiece thereon, In a drilling machine equipped with a spindle that moves in the right-and-left direction orthogonal to the processing table and is moved up and down by an elevating mechanism, a drill cassette placed in parallel with the processing table and a transition line of the spindle. A reciprocatingly mountable carrier having at least two tool posts for accommodating a drill, which are provided in the above, and an auxiliary collet for picking up a drill between the drill cassette (drill magazine) and the tool post, The spindle moves back and forth with respect to the tool post to attach and detach the drill.

An example of the printed board punching machine will be described with reference to FIG. In this punching machine 100, a magazine 102 for accommodating a processing drill D is attached to a processing table 101 on which a printed circuit board P is placed, and a processing spindle 10 is installed.
The required drill D is gripped by 3 and drilling is performed according to a predetermined machining program, and similarly, the used drill D is moved in and out according to the machining program.
Reference numeral 104 is an X-axis drive servomotor that moves the machining table 101 in the front-back direction, that is, the X-axis direction, 105 is a lateral drive servomotor that moves the spindle 103 in the orthogonal direction, that is, the Y-axis direction, and 106 is the spindle 103. It is a Z-axis drive servo motor for moving the attached saddle 107 up and down.

The drilling machine 100 is provided with an automatic tool changer, and a pressure foot constituted by surrounding the tip portion of the spindle 103 to remove cutting chips generated when drilling is performed in accordance with a machining program by the NC device. 108 is attached. Therefore, the pressure foot 108 has a large diameter, and in order for the spindle 103 to directly receive or return the drill D of the magazine 102, the drill interval accommodated in the magazine 102 must be larger than the tip diameter of the pressure foot. This limits the number of drills that can be stored in a limited magazine area. That is, since a large amount of space is required to store a large number of tools, the solution to this is as described above.

The intermediate station described in

The operation is performed via the auxiliary collet for picking up as described above, and the operation is further performed by the pair of the collet and the auxiliary collet for picking up. For this reason, the auxiliary collet 1 having a small diameter on the spindle 103
09 is attached, a drill exchange table 111 is provided in the vicinity of the magazine 102, the drill D on the magazine 102 is transferred to the exchange table 111 by the auxiliary collet 109, and the drill D on the exchange table 111 is gripped by the spindle 103. Is taken. In the figure, 110 is an auxiliary collet lifting cylinder.

Drill exchange table 1 of a drill exchange device for a drilling machine
The details around 11, the spindle 103, and the auxiliary collet 109 are shown in FIG. Two drill magazines 102 are provided on a receiving table (magazine mounting table) 112 in which a processing table 101 for mounting the printed circuit board P is provided in series.
Reference numeral 102a denotes a drill magazine on which a new or usable drill Da is placed, and 102b, a used drill Db on the other drill magazine. Drill magazine 102
A drill exchange table 111 is provided between a and 102b. The spindle 103 and the auxiliary collet 109 are provided in parallel. The exchange table 111 includes at least two tool posts 115a and 115b. The auxiliary collet 109 moves up and down in the Z-axis direction together with the spindle 103, and is further moved up and down by the cylinder 110. Reference numeral 108 denotes a pressure foot for sucking cutting waste, which is slightly moved up and down by an appropriate means to facilitate the attachment and detachment of the spindle 103. Since the attachment of the spindle 103 is a well-known structure, its explanation is omitted.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 3 to 12 show a drill replacement method for a drilling machine for a printed circuit board to which the present invention is applied. First, the method when the drills Da and Db are not attached to the spindle 103 before the start of operation will be described. (1) The tool (drill) Da is moved between the tool cassette (drill magazine) 102a and the tool post 115a via the auxiliary collet 109 that picks up the tool (drill) Da. That is, (1-1) a tool magazine (drill magazine) (also called a tool cassette) 102 according to a predetermined program
a and 102b are placed. A drill Da to be used is mounted on 102a, and a space for a used drill is reserved on 102b. (1-2) As shown in FIG. 3, the magazine mount 11
2 is moved below the auxiliary collet 109, which is determined by moving the machining table 101 along the XY axes. (1-3) As shown in FIG. 4, the auxiliary collet 109 for picking up the tool comes down, and the drill magazine 1
Pick up the No. 02 drill Da. (1-4) As shown in FIG. 5, the magazine mount 11
2 moves in the XY axes and is placed below the auxiliary collet 109. (1-5) As shown in FIG. 6, the auxiliary collet 109 is
Use the drilled Da that was picked up by the tool post 11
Leave at 5a and rise. (2) The tool (drill) Da is mounted on the spindle 103 via the post (drill exchange table) 115a, and the tool (drill) Da is used to perform a working operation.
(2-1) As shown in FIG. 7, the magazine mount 11
2 moves in the XY axes and is placed below the spindle 103. (2-2) As shown in FIG. 8, the spindle 103 descends and grips the drill Da on the tool post 115a. (2-3) A working operation is performed using the tool (drill) Da. (3) After performing the predetermined processing, the spindle 103
The tool (drill) Db that needs to be replaced is
It is attached and detached via the tool post 115b. That is, (3-1) as shown in FIG. 9, the spindle 103, which has been required to be replaced, is lowered and the attached drill Db is attached to the other tool post 115b which has moved along the XY axes. . (3-2) As shown in FIG. 10, the spindle 103 moves up. (4) Tool (drill) D on the tool post 115b
b moves via the auxiliary collet 109 that picks up the tool. That is, (4-1) as shown in FIG. 11, the tool post 11
Auxiliary collet 10 descending the drill Db on 5b
9 picks up. (4-2) As shown in FIG. 12, the drill Db is mounted on the drill magazine 102b that has moved in the XY axes.

[0013]

As described above, by the time of at least 1984, a new or old package or an object or a tool, which has been a known technique, is exchanged through a pair of a collet to be picked up and an auxiliary collet. It was possible to apply the spinning machine technology that had been performed via the intermediate station to the tool changer for the printed board drilling machine. According to the present invention, the tool is moved and exchanged via the auxiliary collet and two or more tool posts, and the tool interval accommodated in the tool magazine can be made smaller than that of the conventional apparatus, so that the space can be reduced. It can accommodate a large number of tools. Also, since the tools are exchanged via two or more tool posts, two or more tool magazines can be installed, and the tools can be classified.

[Brief description of drawings]

FIG. 1 is a side view of a punching machine showing an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of a drill exchanging device for a drilling machine showing an embodiment of the present invention.

FIG. 3 is a vertical cross-sectional view of a drill replacement device showing a drill replacement method according to an embodiment of the present invention.

FIG. 4 is a vertical cross-sectional view of a drill replacement device showing a drill replacement method according to an embodiment of the present invention.

FIG. 5 is a vertical cross-sectional view of a drill replacement device showing a drill replacement method according to an embodiment of the present invention.

FIG. 6 is a vertical cross-sectional view of a drill replacement device showing a drill replacement method according to an embodiment of the present invention.

FIG. 7 is a vertical cross-sectional view of a drill replacement device showing a drill replacement method according to an embodiment of the present invention.

FIG. 8 is a vertical cross-sectional view of a drill replacement device showing a drill replacement method according to an embodiment of the present invention.

FIG. 9 is a vertical cross-sectional view of a drill replacement device showing a drill replacement method according to an embodiment of the present invention.

FIG. 10 is a vertical cross-sectional view of a drill replacement device showing a drill replacement method according to an embodiment of the present invention.

FIG. 11 is a vertical cross-sectional view of a drill replacement device showing a drill replacement method according to an embodiment of the present invention.

FIG. 12 is a vertical cross-sectional view of a drill replacement device showing a drill replacement method according to an embodiment of the present invention.

[Explanation of symbols]

 100 drilling machine 101 processing table 111 drill exchange table 112 magazine mounting table 103 spindle 102 drill cassette 109 auxiliary collet 115a tool post 115b tool post Da, Db drill P printed circuit board

Claims (1)

[Claims] 1. A method for attaching and detaching a tool by means of a spindle that moves in the Z-axis direction and an auxiliary collet that picks up, a machining table that moves in the X- and Y-axis directions and places a workpiece, and the machining. Place the tool cassette on the table for
At least two tool posts for accommodating a drill are provided on the transition line of the spindle, and (1) the tool is moved between the tool cassette and the tool post via an auxiliary collet for picking up the tool, (2) ) The spindle is fitted with the tool via the post (drill exchange table), the tool is used to perform a machining operation, and (3) the predetermined machining is performed, and then the spindle is mounted on the spindle. The tool that requires is attached and detached via the above post,
(4) An automatic drill replacement method for a drilling machine, characterized in that the tools on the post are replaced in the order in which they move via an auxiliary collet that picks up the tools.