JPH0839380A - Tool replacing device - Google Patents

Abstract

PURPOSE:To provide a tool replacing device, by which many replacing tools can be stored in such a manner as to be freely replaced without taking up lateral space, and a desired replacing tool can be taken out efficiently by a simple method in a simple constitution. CONSTITUTION:Rotators 1 holding plural replacing tools 3 are rotatably disposed at designated spaces in the superposing state in plural stages, and an elevating pass part for permitting passing and lowering of a tool applied body 5 which descends in place of a tool holding part 2 is formed on a designated position of the peripheral edge of each rotator 1 on the upper stage side except the lowermost stage at least.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool exchanging device for exchanging various exchanging tools in a tool holder in accordance with machining contents in turning or milling.

[0002]

2. Description of the Related Art A conventional tool changing device is generally provided on the side of a processing machine such as a lathe or a boring machine, and its structure is, for example, a peripheral edge of a disk-shaped rotating body. A C-shaped cutout recess is formed at a predetermined interval on the base, and a locking claw is pivotally attached to the cutout recess so as to be openable and closable to provide a tool holding part. The locking claw is provided in the cutout recess of each tool holding part. A tool mounting body having a mounting portion (tool holder) at the lower end, which holds the predetermined replacement tool in a suspended and supported state in a retaining state and chucks the supported and supported replacement tool from above Ram) is installed horizontally and vertically via a cross rail,
This tool mounting body is moved to rotate the rotating body by a predetermined angle to position a desired replacement tool below the tool mounting body, and then, for example, when taking out, the tool mounting body is lowered and the replacement tool is mounted by the mounting portion. The exchanging tool is taken out from the rotating body by chucking from above, horizontally sliding to engage and disengage from the locking claw, pulling out from the notch concave portion, and further raising upward.

In the case of complicated machining, various machining tools are required according to the machining content, and it is necessary to store a large number of exchangeable tools in a replaceable manner.

It is conceivable to provide a large number of tool holding portions by accommodating a large number of replacement tools by enlarging the diameter of the rotating body and increasing the peripheral length thereof, but that much space is required. Is not practically preferable.

It is also conceivable to arrange a plurality of rotating tools having different diameters in a line up and down so that the diameter becomes larger toward the lower side so as not to hinder the removal of the replacement tools. Although a large number of tools can be stored using the upper and lower spaces, the diameter of the rotating body increases as it goes downward, and the left and right spaces take up space, which is not preferable in practical use. On the other hand, for example, it is conceivable to provide a tool holding portion on a moving body moving in a belt shape to accommodate a large number of replacement tools and to design so as not to take up space, but adopt this structure so as not to take up left and right space. Doing so requires a very complicated structure, is not suitable for mass production, and is not practical.

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem, and allows a large number of replacement tools to be interchangeably stored without taking up space, and to efficiently take out a desired replacement tool by a simple method with a simple configuration. The purpose of the present invention is to provide an excellent tool changer capable of performing the above.

[0007]

The gist of the present invention will be described with reference to the accompanying drawings.

A tool holding portion 2 is provided at a predetermined interval on the periphery of the rotating body 1, and a predetermined replacement tool 3 is provided on each tool holding portion 2.
Respectively, and a tool mounting body 5 having a mounting portion 4 capable of detachably taking out and mounting the exchange tool 3 held in the tool holding portion 2 is provided for horizontal movement and vertical movement,
The tool mounting body 5 is moved to rotate the rotating body 1 by a predetermined angle to position the desired replacement tool 3 below the tool mounting body 5, and then the tool mounting body 5 is lowered to the mounting portion 4. In the tool exchanging device for removing the desired exchange tool 3 from the rotating body 1 by mounting the exchange tool 3 and moving the tool attaching body 5, the rotating body 1 holding the plurality of exchange tools 3 is moved at a predetermined interval. A tool mounting body 5 which is placed in a stacked state in the vertical direction so as to be rotatable in a plurality of stages and descends at a predetermined position on the peripheral edge of each rotating body 1 on the upper stage side except at least the lowermost stage in place of the tool holding section 2. Elevating / passing unit 6 through which a vehicle can pass and descend
The present invention relates to a tool changing device characterized in that

Further, the rotary drive sources of the plurality of stages of rotary bodies 1 are common, and each rotary body 1 is configured to be rotatable via a rotary shaft 8 rotated by one rotary drive source 7, and at least the lowermost stage is provided. A clutch device 9 capable of releasing transmission of the rotational drive from the rotary shaft 8 is provided on each rotating body 1 on the upper stage side except for the raising / lowering passage portion 6 when the tool mounting body 5 is positioned on the raising / lowering passage portion 6. The tool changer according to claim 1, wherein the clutch device 9 of the rotating body 1 having the above is operated to release the transmission so that the rotating body 1 does not rotate.

[0010]

The tool mounting body 5 is moved horizontally and vertically to move from the machining position to the replacement mounting position, and for example, the used replacement tool 3 once mounted on the mounting portion 4 of the tool mounting body 5 is rotated. When holding the tool holder 1 of the
The rotating body 1 is rotated by a predetermined angle so that the empty tool holding portion 2 that is not held is positioned below the tool mounting body 5, and then the tool mounting body 5 is lowered to engage the mounting of the mounting portion 4. The exchange tool 3 that has been detached and removed is supported and held by the tool holder 2.

Then, for example, the tool mounting body 5 is once moved upward and retracted, the rotary body 1 is rotated by a predetermined angle, and a desired replacement tool 3 to be used for the next machining is positioned below the tool mounting body 5. Then, the tool mounting body 5 is lowered to mount the replacement tool 3 on the mounting portion 4, and the replacement tool 3 is taken out of the rotating body 1 and replaced.

At this time, for example, when the uppermost rotary body 1 does not have the desired replacement tool 3 and the lower rotary body 1 has the desired replacement tool 3, the uppermost rotary body 1 is once designated. It is rotated by an angle to position the elevating / lowering passage portion 6 below the tool mounting body 5 or on the side of the lowered tool mounting body 5.

Then, the tool mounting body 5 is lowered or slid to move the tool mounting body 5
Is disposed, the tool mounting body 5 is lowered to pass through the elevating passage portion 6, and the lower rotating body 1 is similarly rotated to position the desired replacement tool 3 below, and the tool mounting body 5 is moved. The replacement tool 3 is mounted on the mounting body 4 by lowering.

Similarly, when the exchange tool 3 of the lower rotating body 1 is to be taken out, the upper rotating body 1 is rotated as described above, and the lifting / lowering passage 6 is provided below the tool mounting body 5 respectively. The tool mounting body 5 is desired to be above the lower rotating body 1 through the elevating passage portion 6 held at the vertically communicating position, and the rotating body 1 is rotated by a predetermined angle. Then, the desired replacement tool 3 is taken out in the same manner.

Further, each rotating body 1 is rotatably constituted via a rotating shaft 8 which is rotated by one rotating drive source 7, and at least each of the upper rotating bodies 1 excluding the lowest stage is provided with the rotating shaft 8 from the rotating shaft 8. Device 9 capable of releasing transmission of rotational drive of the clutch
If the tool mounting body 5 is positioned in the elevating / passing portion 6, the rotating body 1 does not rotate due to the release operation of the clutch device 9, and in this state the rotating shaft 8 is rotated by the rotary drive source 7. By rotating, only the rotating body 1 below the rotating body 1 is rotated by a desired angle.

Therefore, the above-mentioned take-out can be performed only by controlling the rotational drive of one rotational drive source 7.

Further, the replacement tool 3 can be removed (installed on the empty tool holder 2) in the same manner.

[0018]

Embodiment In this embodiment, a rotating body 1 in which a plurality of exchange tools 3 are suspended and held by respective tool holding portions 2 provided on the periphery (illustration of many exchange tools 3 is omitted in the drawings).
Are superposed at predetermined intervals in the vertical direction, and are arranged in a three-stage rotatable manner.

Since the rotating bodies 1 have substantially the same diameter,
As compared with the conventional one-step example, the left and right spaces are not occupied at all, and the available upper and lower spaces can be used to store three times as many exchange tools 3 as the conventional example.

In this embodiment, when the three stages of the rotating body 1 are referred to as an upper stage, a middle stage, and a lower stage from the top, the tool holding unit 2 is provided at one position on the periphery of each of the upper and middle rotating bodies 1. Instead, a large notch portion through which the tool mounting body 5 (ram) that goes up and down can pass is formed to form the up / down passing section 6.

Further, in this embodiment, one rotary drive source 7 is provided on the upper part, and the rotary shaft 8 which is rotated by the rotary drive source 7 via the transmission gear 10 passes through the center of each rotary body 1. As described above, the rotating body 1 is configured to be able to rotate via the transmission gear 10 by the rotation of the rotating shaft 8.

Further, in this embodiment, the upper and middle rotary members 1 having the elevating passage 6 are provided with a clutch device 9 capable of releasing the transmission of the rotational drive from the rotary shaft 8. Normally, the clutch device 9 is configured such that the rotation of the rotating shaft 8 is transmitted to the rotating body 1 so that the rotating body 1 is rotated by the rotating shaft 8, and when the tool mounting body 5 is positioned at the elevating passage 6. The rotation transmission is released by the operation of the clutch device 9 and the rotating body 1 provided with the released clutch device 9
Are configured not to rotate even if the rotation shaft 8 is controlled to rotate.

As in the conventional construction, the rotating body 1 employs a disk-shaped rotating body 1 and is arranged at predetermined intervals around the periphery of the rotating body 1.
A notch recess 2A is formed, and a retaining claw 2B for retaining is pivotally connected to the notch recess 2A in a freely openable and closable manner to provide a tool holding portion 2. Instead, the elevating passage 6 is formed.

A predetermined type of replacement tool 3 is suspended and retained on each of the tool holders 2 by a retaining claw 2B.

The tool mounting body 5 is provided on the cross rail 11 so as to be horizontally slidable left and right. The tool mounting body 5 moves up and down or expands and contracts, and the mounting portion 4 provided at the lower end of the tool mounting body 5 moves horizontally. In addition, it is configured to be able to move up and down.

The mounting portion 4 can be mounted by suspending the replacement tool 3 by chucking the upper end of the replacement tool 3. The mounting portion 4 is slightly slid horizontally so as to be locked from within the cutout recess 2A of the tool holding portion 2. The exchange tool 3 is configured to be disengaged from the claw 2B to be taken out and mounted.

Further, the clutch device 9 engages an engaging pin 13 erected on the rotating body 1 side with an engaging portion 12 which rotates integrally with the rotating shaft 8, and the rotation of the rotating shaft 8 is controlled. The rotating body 1 is configured to be rotated by being transmitted to the rotating body 1 through the engaging pin 13, and an operator 14 for disengaging and disengaging the engaging pin 13 from the engaging position is provided inside the elevating passage portion 6. Provided in a protruding state, when the tool mounting body 5 is slid and inserted into the elevating passage part 6, the operator 14 is pushed inward, and when the operator 14 is pushed,
The engagement pin 13 slides against the return spring 15 and moves out of the engagement position 16 so that the rotation drive of the rotation shaft 8 is not transmitted to the rotating body 1 and does not rotate.

The operator 14 is pushed by the side surface of the tool mounting body 5, and a roller is provided at the tip end so that the tool mounting body 5 can move up and down in this pushed state.

Therefore, the present embodiment operates as follows.

A procedure for removing the replacement tool 3 from the mounting portion 4 of the tool mounting body 5 when replacing the replacement tool 3 will be described as an example.

The tool mounting body 5 is moved horizontally and vertically to move from the machining position to the replacement mounting position, and the rotary body 1 is rotated by a predetermined angle to mount the desired replacement tool 3 to be used for the next machining. After positioning it below the body 5,
The tool mounting body 5 is lowered to mount the replacement tool 3 on the mounting portion 4, and the replacement tool 3 is taken out from the rotating body 1. At this time, all the rotating bodies 1 are rotated via the rotating shaft 8 by the operation control of the rotation driving source 7.

At this time, if there is no desired replacement tool 3 in the uppermost rotating body 1 and there is a desired replacement tool 3 in the next lower rotating body 1, the uppermost rotating body 1 is once set to the predetermined position. By rotating the shaft by an angle, the elevating passage 6 is positioned below the tool mounting body 5 or beside the tool mounting body 5 that has descended.

Then, the tool mounting body 5 is lowered or horizontally slid to be placed in the elevating / passing section 6, and then the tool mounting body 5 is further slid inwardly of the elevating / passing section 6 to move the tool mounting body 5. When they are fitted and arranged in the lifting / lowering passage portion 6, the operator 14 is pushed by the tool mounting body 5 and the engagement pin
13 disengages from the engaging position 16 of the engaging portion 12, and the clutch device 9 is released. When the rotary drive source 7 is actuated again to rotate the rotary shaft 8, the upper rotary body 1 does not rotate, and only the interruption and the lower rotary body 1 rotate. In this manner, the rotating body 1 in the middle stage is similarly rotated to position the desired replacement tool 3 below, and the tool mounting body 5 is lowered to mount the replacement tool 3 on the mounting body 4. Similarly, when the replacement tool 3 of the lowermost rotary body 1 is taken out, the middle rotary body 1 is rotated as described above to lower the tool mount body 5 or further lower the tool mount body 5.
Position the lifting / lowering passage portion 6 to the side,
Is lowered or horizontally slid, the tool mounting body 5 is disposed in the elevating passage part 6, and then the tool mounting body 5 is further slid inward into the elevating passage part 6 to hold the tool mounting body 5 in the vertically communicated position. The upper and lower clutch devices 9 are disengaged as described above, and the rotation drive source 7 is again turned on. Is operated to rotate the rotating shaft 8, so that only the lower rotating body 1 rotates. In this way, the lowermost rotary body 1 is rotated by a predetermined angle, and the desired replacement tool 3 is taken out in the same manner.

Therefore, the above-mentioned removal can be performed only by controlling the rotation drive of one rotation drive source 7 while controlling the movement of the tool mounting body 5.

The replacement tool 3 can be removed in the same manner.

[0036]

Since the present invention is constructed as described above, it does not occupy much left and right spaces as compared with the conventional example.
It is possible to store a large number of exchange tools by effectively utilizing the upper and lower spaces, and moreover, it is possible to easily attach a desired exchange tool from the rotating body in the lower stage via the elevating passage part based on the conventional method, It is an excellent tool changer that can be easily replaced and can efficiently perform the work required for replacement.

Further, the rotary drive sources of the plurality of stages of rotary bodies are common, and each rotary body is configured to be rotatable through a rotary shaft rotated by one rotary drive source, and at least the upper stage side except the lowermost stage is arranged. Each rotating body is provided with a clutch device capable of canceling transmission of rotational drive transmission from the rotating shaft, and when the tool mounting body is positioned in the elevating passage part, the clutch device of the rotating body having the elevating passage part is activated. If transmission is canceled and the rotating body is prevented from rotating, even if the rotating bodies are arranged in a plurality of upper and lower stages, the replacement work can be performed by the rotation drive control of one rotation drive source, which is efficient. A tool changer that can be replaced, has a simple structure, is excellent in mass productivity, and is extremely practical without increasing costs.

[Brief description of drawings]

FIG. 1 is a schematic configuration front view of the present embodiment.

FIG. 2 is a front view of an enlarged configuration of a main part of this embodiment.

FIG. 3 is a schematic sectional view of the configuration of the present embodiment.

FIG. 4 is a schematic explanatory plan view of the present embodiment.

FIG. 5 is an enlarged plan view of a main part of FIG. 4;

FIG. 6 is an explanatory cross-sectional view of the clutch device according to the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rotating body 2 Tool holding part 3 Exchange tool 4 Mounting part 5 Tool holding body 6 Elevating passage part 7 Rotation drive source 8 Rotation axis 9 Clutch device

Front page continuation (72) Inventor Fumio Suzuki 2-1 Kitazonocho, Nagaoka City, Niigata Nagaoka Plant, OM Co., Ltd. (72) Inventor Tetsuya Yanagisawa 2-1, Kitazonocho, Nagaoka, Niigata Prefecture OM Factory Nagaoka Factory

Claims (2)

[Claims] 1. A tool holding portion is provided at a predetermined interval on a periphery of a rotating body, and a predetermined replacement tool is held in each of the tool holding portions, and a replacement tool held by the tool holding portion is detachable. A tool mounting body having a mounting portion which can be taken out and mounted on the tool mounting body is provided so as to be movable horizontally and vertically, and the tool mounting body is moved to rotate the rotating body by a predetermined angle to position a desired replacement tool below the tool mounting body. In the tool changing apparatus, after lowering the tool mounting body to mount a desired replacement tool on the mounting portion and moving the tool mounting body to remove the desired replacement tool from the rotating body, the plurality of replacement tools The rotating body holding the, in a vertically stacked state at a predetermined interval and arranged to be freely rotatable in a plurality of stages, the tool holding portion at a predetermined position on the peripheral edge of each rotating body of the upper stage except at least the lowest stage. Descend instead A tool changing device, characterized in that an up-and-down passage portion through which a tool mounting body can pass and descend is formed. 2. A rotary drive source for a plurality of stages of rotary bodies is common, and each rotary body is configured to be rotatable via a rotary shaft that is rotated by one rotary drive source. Each rotating body is provided with a clutch device capable of canceling transmission of rotational drive transmission from the rotating shaft, and when the tool mounting body is positioned in the elevating passage part, the clutch device of the rotating body having the elevating passage part is activated. 2. The tool changer according to claim 1, wherein the transmission is canceled by the transmission so that the rotating body does not rotate.