JPS60146638A - Automatic changing device for tool housed in magazine - Google Patents

Abstract

PURPOSE:To effect an change work of tool during operation of a machine by arranging the captioned device so as to automatically change a tool contained in the main tool magazine of a machine tool with a tool in a tool sub-magazine placed near the machine. CONSTITUTION:For tool change, a pot 23 including a tool to be changed therein is indexed to an A position by a chain 21, while for the sub-magazine 15 side, a blank pot holder 22 is indexed to the A position. Then, the pot 23 held by the pot holder 22 of a main magazine 14 is delivered to the pot holder 22 of the magazine 15. Subsequently a disc 25 is rotated such that the pot holder 22 holding the pot 23 including the pot 23 including therein the tool to be changed of the sub-magazine 15 is indexed to the A position, and the pot 23 is delivered to the pot holder 22 of the main magazine 14. By effecting the above operation in succession, the pot 23 not required in the main magazine 14 is transferred to the sub-magazine, while the pot 23 required in the sub-magazine 15 is transferred to the main magazine 14.

Description

DETAILED DESCRIPTION OF THE INVENTION C. Technical Field to which the Invention Pertains The present invention E relates to a device for automatically exchanging tools stored in a magazine of a machine tool with an automatic tool changer.

[Prior art]

In machine tools equipped with an automatic tool changer, tools are often replaced to prevent wear and tear on the tools stored in the magazine or to accommodate a new workpiece. The replacement tools were brought to the vicinity of the tool magazine and replaced manually one by one. For this reason, it took a lot of time to replace all the tools, and during that time the machine tool stopped working, resulting in low productivity. In addition, workers had to replace heavy tools manually, which was dangerous and required a lot of effort.

[Purpose of the invention]

The present invention eliminates these drawbacks, and its purpose is to:
By automatically exchanging the tools in the magazine while the machine tool is in operation or stopped, the tools stored in the magazine can be exchanged automatically, which increases productivity, saves labor, and improves safety. The purpose is to provide an automatic exchange device.

[Structure of the Invention] The automatic exchange device for tools stored in a magazine according to the present invention includes a main tool magazine provided in a machine tool, a sub tool magazine that is close to or separated from the main tool magazine, and a tool that is mounted and guided on the underside of the main tool magazine. A plurality of tool pots having grooves and pull studs on both sides, a pot holder each attached to both magazines and holding the tool pots, and a hole drilled in a direction perpendicular to the pull studs;
It is characterized by consisting of a clamp piece provided in the hole of the tool holder for clamping or unclamping the pull stud, and a tool pot transfer mechanism for transferring the tool pot between the main tool magazine and the sub tool magazine. .

[Embodiments of the invention]

The present invention will be explained below with reference to figures showing one embodiment. FIG. 1 and FIG. 2 are overall side views and plan views, in which a spindle 11 with a tool (not shown) for machining a workpiece is rotatably inserted through a spindle head (not shown). The supporting column 12-B is placed on a bed 13 so as to be slidable in a direction perpendicular to the plane of the paper in FIG. A main tool magazine 14 (hereinafter referred to as the main magazine) that stores a large number of tools is installed near the column 12, and a plurality of sub-tool magazines 15 (hereinafter referred to as the sub-magazines) are placed in standby positions along the longitudinal direction of the bed 13. (position 17 in the figure), when exchanging tools in the main magazine 14 and tools in the sub-magazine 15, move the column 12 to the bed 13 so that the sub-magazine 15 containing the necessary tools and the main magazine 14 are aligned.
move it above. The sub-magazine 15 is placed on a cart 17 and is transported from a tool preparation room (not shown) to a standby position on rails 18.

The present invention includes tools in the main magazine 14 and sub-magazine 15.
This invention was developed for a device for changing tools. Assuming that the sub-magazine 15f in which the necessary tools are stored prior to tool exchange is selected, and as a result, the upper sub-magazine 15 is selected as shown in FIG. 16.

Next, tool exchange will be explained. Note that in reality, rather than replacing the tool, the tool pot containing the tool is replaced together with the tool. Fig. 3 is a side view of the main magazine 14 and sub-magazine 15 aligned, and position A in the figure is called the tool exchange position. Fig. 4 is an enlarged side view of the main parts of position A seen from above in the paper, and Fig. 5. is its plan view. As shown in FIG. 8, the chain 721 of the main magazine 14 has a pull stud 24 with a small diameter part 24A and a large diameter part 24B on both sides, and a hole 23A in the center into which a tool is inserted.
And guide groove 23BK on the lower surface = tool pot 23 provided
A pot holder 22 is attached that clamps a pull stud 24 on the right side of the pot.

It is assumed that the main magazine 14 holds the bots 23 at all positions of the pot holder 22, and the sub-magazine 15
A pot holder 22 attached to a disc 25 holds the bot 23, and one pot holder 22 does not hold the bot 23 and is empty. It is also assumed that the main magazine 14 rotates clockwise and the sub magazine 15 rotates counterclockwise.

When replacing tools, first use the bot 23 that stores the tools to be replaced.
is indexed to the A position by the checker 721, and the sub magazine 1
On the 5th side, the vacant pot holder 22 is indexed to the A position. Next, the pot 23 held in the bot holder 22 of the main magazine 14 is transferred to the bot holder 22 of the sub magazine 15. (The details will be explained in the next section) Next, the pot holder 22 holding the pot 23 containing the tool to be replaced in the sub-magazine 15 rotates the disk 25 so that it is indexed to the A position. The Shikobot 23 is delivered to the pot holder 22 of the main magazine 14. By doing this sequentially, unnecessary bots 23 in the main magazine 14 can be removed.
are transferred to the sub-magazine 14, and the necessary pots 23 of the sub-magazine 15 are transferred to the main magazine 14.

From the pot holder 22 of the main magazine 14 to the pot 23
When moving the pot 23 to the sub-magazine 15 side, it is necessary to completely release the clamp of the pull stud 24 of the pot 23. This will be explained with reference to FIGS. 6 and 7. Pot holder 2
2 has a hole 31 formed in the direction perpendicular to the plane of the paper in FIG. 4, and a clamp piece 32 shown in FIG. 7 is slidably inserted into the hole 31. The clamp piece 32 has a central part attached to a plate 33.
A small hole 34 and a large hole 35 are continuously provided in the plate 33. Since there is a spring 37 between one side of the clamp piece 32 and the lid 36 attached to the pot holder 22, the clamp piece 32 is always pressed upward in FIG. 6, and its position is regulated by the presser foot 38. . A shaft 39 is provided on the other side of the clamp piece 32, and this shaft 39 is connected to a cylinder A4 attached to a frame (not shown) fixed to the floor.
It faces the piston rod 41 of 0.

When the clamp piece 32 is in the raised position shown in FIG.
The pull stud 24 has a small diameter portion 24A inside the small hole 34 of the clamp piece 32, and the width of the small hole 34 is larger than that of the pull stud 24.
The pull stud 24 or pot 23 is clamped because it is slightly larger than the diameter of the small diameter portion 24A. Here, when pressurized fluid is sent to the chamber 40A on the head side of the cylinder A40, the clamp piece 32 descends via the piston rod 41.
(fftL・”92 Since the width of the large hole 35 is larger than the large diameter portion 24B, it becomes unclamped.

When the pot 23 is unclamped from the pot holder 22 of the main magazine 14, the pot 23 is transferred to the pot holder 22 of the sub magazine 15. That is, tools are replaced. This tool bot transfer mechanism will be explained below with reference to FIGS. 4 and 5. Even when the pot 23 is unclamped from the pot holder 22, it is still held because the protrusion 51 on the side surface and the pull stud 24 have entered the recess 22A in the pot holder 22. Here, the two guides 53 that are slidably placed on the base 52 are connected to the cylinder B5.
When the guide 53 is moved forward and lowered in FIG.
are inserted into the two guide grooves 23B provided on the lower surface of the pot 23, so the base 52 and the bot 23 are engaged.

The base 52 then moves to the left in FIG.
5, the base 52 moves to the left while being guided by a rail 57 on a support stand 56 attached via a frame (not shown) installed on the floor, and moves to the left side of the bot 23. The pull stud 24 enters the bot holding stand 22 of the Sapmagazine 15. At this time, the clamp piece 32 in the bot holding base 22 is attached to the cylinder A in advance.
40 and is in the lowered position (see FIG. 6), the pull stud 24 enters into the large hole 35. Next, when the cylinder A40 is released, the clamp piece 32 is raised by the spring 37, the small diameter portion 24A of the pull stud 24 engages with the small hole 34, and the bot 23 is clamped to the pot holder 22 of the sub-magazine 15. Note that when the base 52 is moved to the left by the cylinder 55C and positioned on the side of the sub-magazine 15, the base 52 remains at this position and is kept on standby.

When the bot 23 has finished clamping the pot holder 22 of the submagazine 5, the pot holder 22 containing the necessary tools of the submagazine 15 is moved to the tool exchange position A.
It is cut out to the position (see FIG. 3) via the disc 25. Subsequently, in the same manner as described above, the clamp piece 32 in the pot holder 22 is lowered by the cylinder A40 to release the pull stud 2.
4, the bot 23 is unclamped, and since the base 52 is at the standby position of the sub-magazine 150111, the guide 53 is lowered by the cylinder h154 (the fifth
(See figure) Engage the base 52 and pot 23.

Next, the base 52 is moved to the main magazine 14 @Il by the cylinder C55. At this time, since the clamp piece 32 in the pot holder 22 on the main magazine 14 side is pre-caulked and lowered, the pull stud 24 on the right side of the pot 23 enters the large hole 35 of the clamp piece 32, and then if the cylinder A40e is released, The small diameter portion 24A of the pull stud 24 is clamped by the small hole 34. That is, the pot 23 is held by the pot holder 22 of the main magazine 14. With the above operations, one tool has been replaced. Replace the necessary tools in the same manner. Note that this replacement work can be performed even while the machine is in operation.

〔Effect of the invention〕

As explained above, the automatic exchange unit for tools stored in a magazine according to the present invention is designed to automatically exchange tools in the main tool magazine of a machine tool and tools in a sub-tool magazine placed near the machine tool. As a result, replacement time is short and replacement work can be done while the machine tool is running, increasing productivity. Furthermore, since the machine tool operator does not have to touch heavy tools with his/her hand, there are advantages such as safety and labor saving.

[Brief explanation of drawings]

Each figure shows an embodiment of the present invention. Figures 1 and 2 are an overall side view and a plan view, Figure 3 is a side view when the main magazine and sub magazine are close together, and Figure 4 is a side view of the main magazine and sub magazine. An enlarged side view of the pot holder, etc. when both magazines are in the exchange position, Fig. 5 is a plan view of Fig. 4, and Fig. 6
The figures are a sectional view taken along the line 6-6 in FIG. 4, FIG. 7 is a perspective view of the clamp piece, and FIG. 8 is a side view of the tool pot. 14...Main magazine, 15...Sub magazine, 2
2. Pot holder, 23. Pot, 32. Clamp piece, 33. Plate, 34. Small hole, 35. Large hole, 4.
0...Cylinder A154...Cylinder B155...
・Cylinder C152...Base, 53...Guide, 5
6... Support stand, 57... Rail, : 4V1 item 2 Figure 71-3 spear 50 ;F 6 [21 Piece 7I ¥1 78 (¥1 24B 24A 238 23A Procedural amendment (voluntary) 1985 2 May 72, 1, Display of the case 1972 Patent Application No. 22658b 2 Name of the invention Automatic changing device for tools stored in a magazine 3 Person making the amendment Relationship to the case Applicant 104 Address Tokyo 4-2-11, Ginza, Chuo-ku, Column 5 of "Detailed Description of the Invention", Contents of Amendment (1) On page 5, line 10 of the specification, "Replace the tool" with "Replace the tool with a tool bot" (2) On page 6, lines 6 to 8, the words ``and the guide groove 2313 on the bottom surface have been removed.'' were deleted, and ``was added.'' (3) On page 9, line 5 to line 177, ``Botton 3...'' is guided, moves to the left, deletes 1 and 1, and adds the following explanation. 1. A moving table 50 is located behind the tool exchange position A.
The lower surface of the base 52 engages with a pair of rails 57 provided on the movable table 50, and a hydraulic cylinder 55 provided on the base 52 enables reciprocating movement between the bot holders 22 and 22. A pair of guide rails 53 of the base 52'' are disposed perpendicular to the rail 57.
The bottom surface 59A of the bot holder 58 is movably engaged with the top. The front part of the tool bot holder 58 has an attachment/detachment mechanism (known in the art), and the reciprocating movement of the bot holder 58 is capable of attachment/detachment to/from the tool pot 23 via the installation 23C on the base 52. . Next, the operation of attaching and detaching the bot 23 will be described. ■ The tool bot holder 5 is fixed by the hydraulic cylinder 54.
8 and move the rear part of the tool bot 23 forward I1. ．． s, f
7 Connect all 23C. ■ Release the clamp of the main magazine side bot holder 22. ■ Operate the oil field cylinder 55, move the base 52 to the left,
The bot 22 is held by the bot holder 22 on the Zabu magazine side.
to the pull stand 24. (n) While retracting the tool bot holder 58 using the hydraulic cylinder 54, the connection between the tool bot holder 58 and the tool bot 23 is released, and the tool bot holder 58 is retracted. The movement of the tool pot 23 is completed by the above operations ①-②. Conversely, when transferring the tool bot 23 from the sub-magazine 15 to the main magazine 14, the operation Q-No-2 is performed. Next, the operation of the bot holder 22 will be explained! When the tool bot 23 moves to the left, 1. "Shh..." :: Figure 4 Figure 8 Figure 5

Claims (1)

[Scope of Claims] 1) A main tool magazine provided in a machine tool, a sub-tool magazine adjacent to or isolated from the main tool magazine, and a tool magazine having a guide groove on its lower surface and pull studs on both sides. a plurality of tool pots, each of which is attached to both magazines and holds the tool pot; and a pot holder provided in a hole of the pot holder that is drilled in a direction perpendicular to the pull stud and that holds the pull stud. An automatic exchange device for tools completely stored in a magazine, comprising a clamp piece for clamping or unclamping, and a tool pot transfer mechanism for transporting the tools between the main tool magazine and the sub-tool magazine. 2) Both ends of the clamp piece are shaft-shaped, and a small hole for clamping the small diameter portion of the pull stud and a large hole with a width larger than the diameter of the large diameter portion of the pull stud are continuously provided in the intermediate plate. An automatic tool exchange device for tools stored in a magazine according to claim 1. A pace that allows cylinder B to engage or separate the guide from the guide sakaki of the tool pot, and a cylinder C that connects the base between the main tool magazine and the sub tool magazine via the rail on its upper surface. Claim 1, characterized in that it consists of a carriage for reciprocating. ~I paid $8 for Cassia□. Self 1,7 conversion device.