JP2001259951A - Tool magazine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tool magazine equipped with a socket receiving member for ensuring reduction of the number of items, manufacturing man-hours, assembling man-hours, reduction in weight and cost, and socket holding. SOLUTION: A seat surface 20a for mounting a socket receiving member 20, which is mounted on a chain 5 at every specified distance for detacbably/ attachably holding a socket 8 having guide grooves 8a on its both side faces for housing a tool, on the chain 5 and both sides of guide plates 20b engaging in the guide grooves 8a of the socket 8 are integrally formed in a U shape by bending with a temporary material. The socket receiving member 20 is mounted on the chain 5 with a plurality of clamp pieces 21 given a rotation preventing means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool magazine for storing a large number of tools and indexing necessary tools to tool change positions.

[0002]

2. Description of the Related Art In a machining center, a tool magazine is known in which tools are stored in a large number of sockets and a required tool is indexed to a tool changing position in accordance with a command from a control device. As shown in FIG. 8, a conventionally known tool magazine has a magazine base 1 on which a sprocket 3 driven by a servomotor 2 and a tension roller 4 are suspended. An orbiting endless chain 5 is hung over these. I have. To the chain 5, socket receiving members 7 holding resin sockets 8 into which a tool holder 11 shown in FIG.

[0003] The socket 8 has guide grooves 8a formed on both side surfaces thereof.
As shown in FIG. 12, a mounting seat 7a for the chain 5 and the socket 8 on both sides of the mounting seat 7a.
A guide plate 7b engaged with the guide groove 8a is mounted, and the socket 8 held by the socket receiving member 7 is fixed to the magazine base 1 by the chain 5 being driven to rotate. 9, the socket 8 is extracted from the socket receiving member 7 by the swivel arm 10 and rotated by 90 ° at the tool exchange position 9 as shown in FIG. Perform a tool exchange operation of holding the tool holder 11 and extracting it from the socket 8 and storing it in the socket 8.

The socket receiving member 7 is attached to the chain 5 so that the thickness T of the seat 7a is such that a dimension G from the center of the chain 5 to the center of the socket 8 is secured. The configuration of the socket receiving member 7 will be described in detail with reference to FIG. As described above, the basic components include the seat 7a for attachment to the chain 5 and the pair of guide plates 7b. The insertion and removal of the socket 8 is repeatedly performed at the tip of the guide plate 7b.
-1, 7b-2 are formed, and a plurality of through holes 7b-3 for mounting bolts 7c are opened at the other end. The mounting seat 7a has a recess 7a-1 for mounting the guide plate 7b on both sides thereof and a plurality of screw holes 7a-2 corresponding to the through holes 7b-3. Are provided with a plurality of screw holes 7a-3 into which the mounting bolts 5a are screwed.

[0005]

The mounting seat 7a and the guide plate 7b constituting the conventional socket receiving member 7 are all manufactured by machining using a machining center or the like. That is, in order to secure the thickness G of the mounting seat portion 7a from the center of the chain 5 to the center of the socket 8, the upper surface and the lower surface are milled, the concave portions 7a-1 on both sides and the screw holes 7a-2 are provided. Is machined, and the guide plate 7
b, both sides and the chamfered portions 7b-1, 7b-
2 is the same, and the other end is machined with a plurality of through-holes 7b-3, requiring a large number of manufacturing steps and parts, and requiring several tens according to the number of tool storages. For this reason, the cost of the tool magazine has been increased.

[0006] Further, since it is composed of a large number of parts, the number of assembling work steps is large, which also increases the cost of the tool magazine.
a is a thickness T over the entire length in order to secure a dimension G from the center of the chain 5 to the center of the socket 8;
As a result, the overall weight of the chain 5 is increased, and the capacity of the servomotor 2 for driving the chain 5 is increased, which also causes an increase in the cost of the tool magazine.

Further, the socket receiving member 7 has a mounting seat portion 7a and a guide plate 7b which are separate components.
Since the guide plate 7b is fastened to both sides of the mounting seat portion 7a by the mounting bolts 7c, the tightening of the guide plate 7b is loosened due to an impact due to the forward / reverse rotation drive of the chain 5, and the guide plate 7b is indexed to the tool changing position 9 or the socket 8
In some cases, there was a problem that the position was shifted.

An object of the present invention is to provide a tool magazine provided with a socket receiving member which ensures the number of components, the number of manufacturing steps and the number of steps of assembly, the weight and cost, and the socket holding.

[0009]

According to the present invention, there is provided an endless chain having guide grooves formed on both sides thereof and surrounding a plurality of sockets for accommodating tools, the guide grooves being attached at required intervals. In a tool magazine, which engages with the guide groove of the socket receiving member in the guide groove, detachably holds the guide groove, and transfers a tool to the socket indexed to a tool change position by a tool changing device, a seat attached to the chain. A socket receiving member in which a portion and guide plates on both sides engaged with the guide grooves of the socket are integrally formed into a U-shape by bending a plate material is attached to the chain.

In addition, guide grooves are formed on both side surfaces, and the guide grooves of the socket receiving member attached at required intervals to an endless chain which surrounds a number of sockets for accommodating tools are engaged with the guide grooves. In a tool magazine that detachably holds and transfers a tool to the socket indexed to a tool changing position by a tool changing device, a seat attached to the chain and guide plates on both sides engaged in a guide groove of the socket. A socket receiving member integrally formed into a U-shape by a bending process using a plate material, and attached to the chain via a plurality of clamp pieces provided with detent means.

The clamp piece comprises a small-diameter portion fitted into a mounting hole formed in the socket receiving member and provided with a rotation preventing means, and a large-diameter portion on the upper surface for receiving the socket receiving member. It is characterized in that it is screwed and attached to the screw hole of the clamp piece by a mounting bolt passing through the through hole.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. The configuration of the entire tool magazine is the same as the conventional one shown in FIG. 1 and 2, 5 is a chain, 20 is a socket receiving member according to the present invention, 8 is a socket for storing a tool,
Guide grooves 8a are formed on both sides thereof.

The socket receiving member 20 includes a chain 5
20a and the guide groove 8 of the socket 8
a of the guide plates 20b on both sides engaged with
These are formed by integrally molding one material into a U-shape.

As shown in FIG. 11, the socket receiving member 20 is provided between the chain 5 and the seat 20a of the socket receiving member 20 in order to secure a dimension G from the center of the chain 5 to the center of the socket 8. Although it is possible to attach to the chain 5 via a spacer, it is attached to the chain 5 through a plurality of clamp pieces 21 provided with a rotation preventing means.

As shown in FIG. 4, the socket receiving member 20 is integrally formed into a U-shape by, for example, punching or cutting from an iron plate by pressing and bending the guide plate 20b as shown in FIG. Are integrally formed in a U-shape so as to form a chamfered portion 20d at the tip end of the. Further, instead of punching or cutting with a press, cutting with a laser processing machine or the like and bending with a press may be performed. Therefore, the socket receiving member 20 can be mass-produced without using a machining center or the like without machine cutting, and the number of parts, the number of manufacturing steps and the number of assembling steps can be reduced, and the weight and cost can be reduced.

A clamp piece 2 provided with the above-mentioned detent means
1 is a socket receiving member 20 as shown in FIGS.
The large diameter portion 21a having a large diameter d1 and a small diameter d2 having a straight chamfered portion 21c formed on the outer peripheral surface so as to be fitted into a mounting hole 20c formed in a seat portion 20a of the socket receiving member 20 described later. And a screw hole 21d at the axis. The thickness H of the large-diameter portion 21a is set to a dimension that secures a dimension G from the center of the chain 5 to the center of the socket 8. This clamp piece 2
1 can be manufactured at a low cost because a small-sized automatic lathe is used to perform one-chucking mass production processing including processing of the chamfered portion 21c by an end mill.

As shown in FIGS. 3 and 4, a small-diameter portion 21b of the clamp piece 21 is fitted in the plane of the seat portion 20a of the socket receiving member 20 in a manner corresponding to the chamfered portion 21c. A plurality of mounting holes 20c having a linear portion 20e formed in the circumference thereof are provided. On the other hand, chain 5
Are provided with a plurality of through holes 23 corresponding to the mounting holes 20c.

To attach the socket receiving member 20 to the chain 5, the small diameter portion 21b of the clamp piece 21 is fitted into the mounting hole 20c formed in the seat portion 20a of the socket receiving member 20 in a non-rotating manner. Screw hole 2
The mounting bolt 22 passed through the through hole 23 is screwed into the screw hole 21 d of the clamp piece 21 so that 1 d matches the through hole 23 formed in the chain 5.

In the above embodiment, a straight chamfered portion 21c is formed on the outer peripheral surface of the small diameter portion 21b as a detent means for the clamp piece 21, and the seat portion 20a of the socket receiving member 20 is formed.
Has a structure in which a small-diameter portion 21b is non-rotatably fitted as a mounting hole 20c having a linear portion 20d formed in the circumference. However, the small-diameter portion 21b of the clamp piece 21 is formed into an elliptical, triangular or quadrangular polygon. , Seat portion 20 of socket receiving member 20
It is also possible to change the design of the mounting hole 20c of (a) to the detent means of the clamp piece 21 which is shaped to fit in correspondence with the shape of the small diameter portion 21b of the clamp piece 21.

[0020]

As described above, according to the present invention, a socket receiving member for detachably holding a socket for accommodating a tool is formed into a U-shape from a single plate material without mechanical cutting by only bending. As a result, the number of parts, the number of manufacturing steps, and the number of assembling steps are significantly reduced as compared with the conventional socket receiving member, so that the weight and cost can be reduced. With the integrated structure described above, the problem that the tool exchange operation is hindered due to the loosening of the mounting bolt as in the guide plate of the conventional socket receiving member is solved.

Further, since the socket receiving member and the chain are connected with each other by using a clamp piece in which the mounting hole formed in the socket receiving member is prevented from rotating.
The mounting bolt can be easily tightened at the time of connection, and strong tightening can be performed. As a result, positioning accuracy up to the center of the socket is guaranteed, and loosening after tightening can be prevented.

Furthermore, since the socket is received on the upper surface of the head of the clamp piece and the dimension from the center of the chain to the center of the socket is secured, the weight of the socket receiving member itself is reduced, and the capacity of the servo motor for driving the chain is reduced. It is possible to reduce the cost of the tool magazine.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of the present invention.

FIG. 2 is a partial cross-sectional view taken along the arrow C in FIG. 1;

FIG. 3 is an exploded perspective view of the present invention.

FIG. 4 is a plan view of a plate material for manufacturing the present invention before bending.

FIG. 5 is a front view of a clamp piece.

FIG. 6 is a view as seen from an arrow E in FIG. 5;

FIG. 7 is a sectional view taken along the line FF of FIG. 5;

FIG. 8 is a front view of the tool magazine.

9 is a cross-sectional view taken along the line BB in FIG.

FIG. 10 is a perspective view of a socket for a tool holder.

FIG. 11 shows a conventional socket receiving member, and FIG.
A section enlarged cross section

FIG. 12 is an exploded perspective view of a conventional socket receiving member.

[Explanation of symbols]

 Reference Signs List 5 chain 5a mounting bolt 8 socket 8a guide groove 20 socket receiving member 20a seat 20b guide plate 20c mounting hole 20d chamfered portion 20e linear portion 21 clamp piece 21a large diameter portion 21b small diameter portion 21c chamfered portion 21d screw hole

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Fumio Suzuki 1-1-1 Asahi-cho, Kariya-shi, Aichi Toyota Machine Works Co., Ltd. (72) Inventor Kenji 1-1-1 Asahi-cho, Kariya-shi, Aichi Prefecture (72) Inventor Keiichi Kiyooka 1-1-1 Asahi-cho, Kariya-shi, Aichi Prefecture Toyota Machine Works Co., Ltd. F-term (reference) 3C002 AA04 AA06 DD01 LL12

Claims (3)

[Claims] 1. A guide groove of a socket receiving member attached to an endless chain around a plurality of sockets accommodating a plurality of sockets for accommodating a tool and having a guide groove formed on both side surfaces thereof. In a tool magazine that detachably holds and transfers a tool to a socket indexed to a tool change position by a tool changing device, a seat portion to be attached to the chain and guide plates on both sides to be engaged in a guide groove of the socket. A tool magazine, wherein a socket receiving member integrally formed into a U-shape by bending a plate material is attached to the chain. 2. A guide plate of a socket receiving member attached at a required interval to an endless chain which has a guide groove formed on both side surfaces and surrounds a plurality of sockets for accommodating tools, and engages with the guide groove. In a tool magazine that detachably holds and transfers a tool to a socket indexed to a tool change position by a tool changing device, a seat portion to be attached to the chain and guide plates on both sides to be engaged in a guide groove of the socket. A tool magazine wherein a socket receiving member integrally formed into a U-shape by bending a plate material is attached to the chain via a plurality of clamp pieces provided with detent means. 3. A clamp piece according to claim 2, wherein the small-diameter portion is fitted in a mounting hole formed in the socket receiving member and provided with a rotation preventing means, and a large-diameter portion on the upper surface for receiving the socket receiving member. A tool magazine characterized by being screwed into a screw hole of a clamp piece with a mounting bolt passing through a through hole formed in a chain.