JPS6274539A - Tool magazine of machining center - Google Patents

Abstract

PURPOSE:To enhance the locational accuracy for accommodation of a tool and mounting/removal of a gripper by furnishing an insert and guide for each tool magazine in a divided construction, and by installing them removably in a coupling hollow bin of a chain link plate. CONSTITUTION:In case mounting is made b screwing male screws 11 are formed at the insides of the two ends of a hollow bin 22, and female screws 12 to mate with the screws 11 are formed at an insert 6 and a guide 7 on their sides where the hollow bin 22 is installed, while the other sides are furnished with flanges 6A, 7A. Then the insert 6 and guide 7 are driven until these flanges 6A, 7A join with the end face of hollow bin 22, and are fixed so as to provide a mounting position in which a tool 9 can be fitted in close contact with the guide 7. Thus the hollow bin 22, insert 6 and guide 7 are held concentrically to assure an enhanced locational accuracy for accommodation of tool 9, and further the fitting/removal position of the tool 9 by a gripper can be held precisely.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a tool storage chain for a machining center in which one of a plurality of types of tools can be freely selected and removed, and more particularly to a tool magazine in which tools are primarily stored.

[Conventional technology]

A conventional tool magazine is attached to a tool storage chain as shown in FIG. That is, 1 is the chain link plate, 2
is a cylindrical hollow pin that connects the chain link plates 1. Hollow pin 2 is chain link plate 1
The stop ring 8 is inserted into the hole and attached to the two stepped portions formed on both sides of the outer peripheral surface of the hollow pin 2. In this way, the shite and hollow pin 2 are fixed and constitute the whole Che 7. Tool magazine 6 that removably stores tools 9
The tool magazine 3 is inserted into the hollow pin 2, and has the 7-rank portion 3A at one end of the tool magazine 6 in contact with the end surface of the hollow pin 2, and the other end has a stop ring 8 formed adjacent to the end surface of the hollow pin 2. It is loosely inserted by being attached to the stepped portion 6B on the outer circumferential surface of.

Further, another conventional example is shown in FIG. In this example, the horonipin 2 and the tool magazine 3 of the conventional example are integrally constructed.
It is characterized by being equipped with a tool magazine 10 that also serves as a hollow pin, and the other features are the same as in FIG. 3 shown as the conventional example.

[Problem that the invention seeks to solve]

However, since the conventional tool magazine 3 (Fig. 3) is loosely inserted with a space between the buttons in the hollow pin 2, the tool magazine 3 moves freely within the hollow pin 2, and the tool magazine 3 The tool 9 inserted into the gripper (not shown)
Due to the poor positional accuracy of the gripper, it is difficult to attach and detach the tool 9 using the gripper, and accidents often occur in which the tool 9 falls.

Furthermore, since the tool magazine 5 has an integral structure, even if only one of the guide section 5 or the insert section 4 is worn out or damaged, the entire tool magazine 3 must be replaced. Ta.

Sixth, in the case of conventional example No. 4, since the hollow pin dual-purpose tool magazine 10 is also used as the hollow pin 2 of the tool storage chain, when the guide part 5 or the insert part 4 reaches the end of its life due to wear or damage, etc. , After removing all the tool storage chains from the tool storage device, disassembling the tool storage chain into each part, that is, the link plate 1, the hollow pin tool magazine 10, and the stop ring 8, and replacing the hollow pin tool magazine 10, This has the disadvantage that it requires reassembly and mounting in the tool storage device, and that it takes a long time to replace the hollow pin/tool magazine 10.

[Failure to solve the problem]

Therefore, the present invention solves the above-mentioned drawbacks by making the insert part 4 and guide part 5 of the integrated tool magazine 6 into a separate structure and removably attaching them to the inside of the hollow pin 2 that connects the chain link plate 1. That's what I did. Examples will be described below based on FIGS. 1 and 2.

〔Example〕

In Figures 1 and 2, 1 is a chain link plate;
22 is a cylindrical hollow pin that connects the chain link plates 1. The hollow pin 22 is inserted into the hole in the chain link plate 1, and the stop ring 8 is attached to the stepped portions 22A formed on both sides of the outer surface of the hollow pin 22 to fix the hollow pin 22 and complete the chain as a whole. Configure. The tool magazine section is configured independently of the insert 6 and the guide 7, and fixing elements such as screwed, press-fitted, bonded, screwed, dowel pins, etc. are provided on the inner surfaces of both ends of the hollow pin 22. - As an example, we will explain how to add screws. First, the female threads 11 are formed on the inner surfaces of both ends of the hollow pin 22. This female screw 11 and the same male screw 12
Hollow pin 22 of each insert 6 and guide 7
The attachment is formed on the side, and the other end has 7 rank parts 6A,
Provide 7A. Next, the insert 6 and the guide 7 are screwed in and fastened to a position where the seven rank parts 6A, 7A are joined to the end surface of the hollow pin 22. Needless to say, this attachment should be done so that the tool 9 and the guide 7 are attached in close contact with each other.

〔Effect of the invention〕

In this way, the present invention has an independent configuration of the insert 6 and the guide 7, and by directly fixing them to the inner surfaces of both ends of the hollow pin 2, the hollow pin 2. The insert 6 and the guide 7 are held on the same center, increasing the accuracy of the storage position of the tool 9, and maintaining the attachment/detachment position of the tool 9 with the gripper with high precision, thereby preventing accidents such as the tool 9 falling. It can be prevented.

Another effect is that when the tool magazine 3 reaches the end of its life due to wear or damage, only the insert 6 or guide 7 on the damaged side can be replaced without replacing the entire tool magazine.
It can be easily replaced without disassembling the chain.

Furthermore, if the guide 7 is made of resin, the tool can be prevented from being scratched and can be used for a long time, and if the insert 6 is made of aluminum, the weight of the entire chain can be reduced, making it easier to handle. Needless to say,
This is one of the other effects of the present invention.

[Brief Description of the Drawings] Fig. 1 is a partially omitted plan view showing an embodiment of the present invention, Fig. 2 is a view taken along arrow A-A in Fig. 1, and Figs. 6 and 4 are views of a conventional example. Partially omitted diagrams 1: Chain link plate, 22: Hollow pin. 6: insert, 7: guide, 8 nist spring. 9: Tools

Claims (1)

[Claims] In a tool storage chain for a machining center that has a pair of chain link plates, a hollow pin that connects the chain link plates, and a tool magazine that inserts a tool into the hollow pin, the tool magazine is inserted between the tool guide part and the insert part. A tool magazine for a machining center, characterized in that it is divided into two parts and is detachably attached to the hollow pin.