JPS6254670A - Grindstone exchange device of grindstone cutter - Google Patents

Abstract

PURPOSE:To automate exchange of an used grindstone with a fresh one thereby to simplify an exchange job and to enable labor saving by providing a grindstone mounting/dismounting mechanism having a flange clamper and a nut runner, and a transfer mechanism that controls the transfer of the mounting/dismounting mechanism. CONSTITUTION:With the operation of an oil hydraulic cylinder 34, a grindstone mounting/dismounting mechanism K at the top end of a slantly moving arm 33 is transferred to the first exchange position facing an used grindstone 17. Then with the operations of the 9th cylinder 40 and the 8th cylinder 36, a clamper 35 and a nut runner 39 advance to clamp the outside flange 18, unfasten a nut 19, remove the grindstone 17, and then retreat. And then with the operation of the 7th cylinder 34, the grindstone mounting/dismounting mechanism K is transferred to the second exchange position of an exchange stand 28 through the slant movement of the arm 33, and the used grindstone 17 is inserted onto an upper insertion axis 29a, and when a fresh grindstone 17' goes up to the facing position with the operation of the 6th cylinder 30, the 9th cylinder 40 operates again, the clamper 35 holds the fresh grindstone 17' and retreats. And the fresh grindstone 17' is mounted onto the grindstone axis 16, while each of the operations is carried out in order reverse to the previous one.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a grindstone changing device for automatically changing old and new grindstones in a grindstone cutting machine equipped with a grindstone for cutting.

(Conventional technology) In the past, replacing the old and new grindstones was done manually.

(Problems to be Solved by the Invention) Therefore, there is a problem in that the task of replacing the grindstone is complicated and requires labor.

SUMMARY OF THE INVENTION An object of the present invention is to provide a grindstone changing device for a grindstone cutting machine that can simplify the work of changing the grindstone and save labor.

(Means for Solving the Problems) The present invention is an exchange device for exchanging a grindstone which is sandwiched between a pair of flanges and fastened to a grindstone shaft with a nut,
a flange clamper whose operation is controlled to grip and release the flange on one side; a nut runner whose rotational drive is controlled to fit the nut and make it screw forward and backward; the flange clamper and the nut runner'; a grindstone attachment/detachment mechanism including an actuating member for controlling forward and backward movement of the grindstone shaft in the axial direction; a first exchange position for attaching and detaching a new and old whetstone to and from the whetstone shaft; No. 2 equipped with an exchange stand for receiving grindstones.
The gist of the present invention is to provide a grindstone changing device which is also equipped with a shifting mechanism for controlling the movement of the grindstone attachment/detachment mechanism to an exchange position.

(Function) The device of the present invention grasps the seven flange of the old whetstone fitted on the whetstone shaft, releases the tightened state of the whetstone, removes the old whetstone from the whetstone shaft, and removes the old whetstone from the whetstone shaft. After leaving the old whetstone at the displaced position, grasp the 7 lunges of the rough whetstone and move the rough whetstone again to a position facing the whetstone axis. The system is configured to automatically exchange the old and new grindstones by following a series of fitting and tightening operations.

(Example) Next, an example of the present invention will be explained according to the drawings.

A first hydraulic cylinder 2 installed upright near the front of the bed 1 under the grindstone cutting machine controls up and down drive.
A table 3 is installed, and above the table 3 there is a lifting base 4 placed horizontally for mounting the workpiece W, and a lifting base 4 for releasably clamping the workpiece W between the lifting base 4. An upper and lower clamper 5 placed horizontally is installed in parallel on the table 3, and a clamper 5 is connected to a second hydraulic cylinder 6 to control the horizontal movement in the front-rear direction in order to releasably clamp the workpiece W in the horizontal direction. A pair of front and rear horizontal clampers 8, 8 are placed opposite each other.

A rail 9 is provided protruding from the rear of the table 3 on the bed 1, and this rail 9 is connected to a third hydraulic cylinder 10 installed horizontally on the bed 1 to control its horizontal movement in the front-rear direction. A saddle 11 is slidably mounted, and a swing base 13 whose rear end is connected to a fourth hydraulic cylinder 14 swings via a support shaft 15 to a bracket 12 attached to the saddle 11. is movably supported.

A disc-shaped grindstone 17 rotatably supported on the front end of the swing base 13 via a grindstone shaft 16 has a pair of left and right flanges 18 .
The motor 2 is sandwiched between 18 and fastened to the grinding wheel shaft 16 with a nut 19, and is mounted on the rear part of the swing base 13.
It is rotationally driven via the belt 21 at zero rotation. During cutting of the workpiece W, the third hydraulic cylinder 10 is actuated to move this grindstone 17 forward together with the saddle 11, and the fourth hydraulic cylinder 14 is actuated to move the whetstone 17 to the swing base 13.
At the same time, it moves in an arc in the vertical direction, and while waiting for cutting, it moves to the rearward end together with the saddle 11 and moves to the upwardly inclined end together with the swing base 13, and is held at the cutting standby position.

The whetstone 1 is mounted on one side of the cover 22 for covering the whetstone 17.
A movable cover 25 is vertically installed, which is rotatably controlled by a fifth hydraulic cylinder 24 about a support shaft 23 disposed at the rear of the hydraulic cylinder 7. It rotates upward as a fulcrum, and one side of the grindstone 17 is opened.

A pair of left and right rails 27 are arranged side by side on the bottom surface of the bit 26 excavated below the bed 1, and on this rail 27 is a collection box for receiving and discharging chips generated when cutting the workpiece W. 41 is mounted so as to be movable in the front and rear directions.

The replacement stand 28 is erected on the extension 1a at the rear end of the bed 1 in order to support the worn out old whetstone 17 and the rough whetstone 17' worn in place of the old whetstone 17. On the other hand, the lifting member 29, which is vertically slidable and connected to the sixth hydraulic cylinder 30, has an old grindstone 1.
A lower push shaft 29a for inserting the rough grindstone 17' and a lower push shaft 29b for inserting the coarse grindstone 17' in advance and waiting are arranged side by side. It is displaced up and down by the operation of 30.

A tilting arm 33 is tiltably supported via a support shaft 32 with respect to a bracket 31 attached to the rear part of the bed 1 on the side of the rail 9, and is connected to a seventh hydraulic cylinder 34 and is pivoted about a vertical line. The tilting arm 33 is tilted over a range of approximately 90°, and the old whetstone 17 is removed from the whetstone shaft 16 and a new whetstone 1 is installed in place of the old whetstone 17 at the tip of the tilting arm 33.
A grindstone detachment mechanism K for fitting the grindstone 7' to the grindstone shaft 16 is installed, and the seventh hydraulic cylinder 34 is actuated to move the grindstone detachment mechanism K to the grindstone 17 facing the old grindstone 17 fitted to the grindstone shaft 16. 1
The new grindstone 17' can be moved to an exchange position and a second exchange position opposite to the exchange stand 28 on which the new grindstone 17' on standby is supported.

The grindstone removal@faM4K includes a pair of flange clampers 35 that are installed oppositely to releasably grip the outer flange 18 of the grindstone 17 and are controlled to swing around a support shaft 37.37 by an eighth hydraulic cylinder 36. and a nut runner 39 which is fitted onto the motor shaft of a motor 38 which is biased forward by a spring 42 and driven to rotate in forward and reverse directions in order to insert, screw back and advance the nut 19. 44 so that they can move together in the axial direction of the grinding wheel shaft 16, and a flange clamper 35 and a nut runner 39 are arranged so that the outer flange 18 of the grinding wheel 17 is gripped by the flange clamper 35, and the nut runner 39 is inserted into the nut runner 39. The forward position for inserting the nut 19 and attaching/detaching the whetstone 17, and the whetstone 1
A ninth hydraulic cylinder 40 is provided for controlling the forward and backward movement of the 7 and the 7 flange 18 in the front-rear direction and the backward movement of the 7 and the 7 flange 18.

Next, the operation and effects of the embodiment having the above configuration will be explained.

Now, when replacing the old and new grindstones 17 and 17-, first, the fifth hydraulic cylinder 24 is activated, the movable cover 25 is rotated upward, and one side of the old grindstone 17 in the cutting standby position is released. Meanwhile, the seventh hydraulic cylinder 34 is operated, the tilting arm 33 is tilted to the front tilting end, and the grindstone detachment mechanism K is moved to the first exchange position facing the old grindstone 17. Next, the ninth hydraulic cylinder 40 in the grinding wheel attachment/detachment mechanism is operated, and the flange clamper 35 and nut runner 39 move toward the old grinding wheel 17, so that the flange clamper 35 is opposed to the outer seven flange 18, and is placed inside the nut runner 39. The nut 19 is inserted. Subsequently, the eighth hydraulic cylinder 36 is operated, and the flange clamper 35 grips the outer flange 18. In this state, the motor 38 is started and the nut runner 39 is rotated in the direction in which the nut 19 is screwed back. It is screwed back and removed from the grinding wheel shaft 16. Further, the ninth hydraulic cylinder 40 is activated, and the flange clamper 35 and the nut runner 39 leave work together with the old grindstone 17 while the outer flange 18 is gripped by the flange clamper 35 and the nut 19 is held in the nut runner 39. The old grindstone 17 is removed from the grindstone shaft 16. Next, the seventh hydraulic cylinder 34 is actuated, the tilting arm 33 is tilted to the rear tilting end, and the grindstone attachment/detachment mechanism K is moved to the second exchange position facing the upper insertion shaft 29a of the exchange stand 28. Further, at this second exchange position, the ninth hydraulic cylinder 40 operates, and the flange clamper 35 and the nut runner 39 move toward the upper fitting insertion shaft 29a, and the flange clamper 35 grips the outer flange 18 while holding the old grinding wheel. 17
is inserted into the upper insertion shaft 29ak of the exchange stand 28.

Next, after the eighth hydraulic cylinder 36 is activated and the flange clamper 35 releases the outer flange 18, the ninth hydraulic cylinder 40 is activated, the flange clamper 35 and the nut runner 39 are removed, and the old grindstone 17 is fitted over the top. It remains on the insert shaft 29a. Subsequently, the sixth hydraulic cylinder 30 of the replacement stand 28 is operated to move the lower fitting insertion shaft 29b, which has previously attached the new grindstone 17-, to a position facing the grindstone detachment mechanism K, and then the ninth hydraulic cylinder 30 is operated again. The cylinder 40 is activated and the flange clamper 35 moves to grip the outer flange 18 of the new grindstone 17'. Next, the eighth hydraulic cylinder 36 is activated and the flange clamper 35 grips the outer seven flange 18 of the new whetstone 17', and then the ninth hydraulic cylinder 40 is activated and the flange clamper 35 is moved together with the new whetstone 17'. Move forward. Next, the seventh hydraulic cylinder 34 is actuated to drive the tilting arm 33 to the front tilting end, and the grindstone removal mechanism K is again moved to the first exchange position where the new grindstone 17' is opposed to the grindstone shaft 16. Note that the nut 19 is held within the nut runner 39 while being moved to the grindstone attachment/detachment mechanism. The grindstone detachment mechanism that has moved to the first replacement position is gradually operated in the reverse procedure to the detachment procedure for the old grindstone 17, and the new grindstone 17- is inserted into the grindstone shaft 16 together with the 7 flange 18, and the nut 19 is used to tighten the grindstone. It is fastened to the shaft 16. Then, the fifth hydraulic cylinder 24 is actuated to close the movable cover 25, and the tilting arm 33 returns to the rear tilting end, completing the series of grindstone replacement operations. In addition,
The operating order and timing of each operating member are set based on a program created in advance.

Therefore, the series of operations for exchanging the old and new whetstones can be carried out smoothly and the old and new whetstones 17.17- can be accurately and automatically exchanged, which has the effect of simplifying and labor-saving the work of exchanging the old and new whetstones. .

In the above-mentioned embodiment, the grindstone detacher IK may be configured to be moved horizontally on the rail to the first exchange position and the second exchange position.

(Effects of the Invention) That is, the present invention is an exchange device for exchanging a grindstone which is sandwiched between a pair of flanges and fastened to a grindstone shaft with a nut, and which includes gripping and releasing of one flange. a flange clamper whose operation is controlled in order to engage the nut, a nut runner whose rotational drive is controlled in order to insert and screw the nut in, and a nut runner whose movement is controlled to move the flange clamper and the nut runner back and forth in the axial direction of the grindstone shaft. A grindstone attachment/detachment mechanism including an operating member for attaching and detaching the old and new grindstones to and from the grindstone shaft, a first exchange position for attaching and detaching the old and new whetstones to the whetstone shaft, and an exchange stand for waiting the new whetstone and receiving the old whetstone. By providing a displacement mechanism for controlling the movement of the grindstone l152?2 mechanism to the second exchange position,
A series of grindstone exchange operations are carried out smoothly, and the old and new grindstones are accurately and automatically exchanged, which has the effect of simplifying and labor-saving the work of exchanging the old and new whetstones.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a plan view, Fig. 2 is a side view, Fig. 3 is a front view, and Fig. 4 is a grindstone IB.
A large side view of the 2B two-groove mechanism, and FIG. 5 is an enlarged front view as well. 16...Whetstone Axis 17.17°...Whetstone 18...Flange 19...Sut 28...Replacement stand 35...Flange clamper 39...Nut runner K...Whetstone Detachment mechanism applicant Nagoya Elastic Grinding Co., Ltd. Agent
Patent Attorney Oka 1) Hidehiko (2 others) Figure 3 ■ Figure 4 17 No rear drawing/'' Figure 5

Claims (1)

[Claims] A replacement device for replacing a grindstone that is sandwiched between a pair of flanges and fastened to a grindstone shaft with a nut, comprising: a flange clamper whose operation is controlled to grip and release one flange; , a whetstone comprising: a nut runner whose rotational drive is controlled to insert the nut and screw it forward and backward; and an actuating member that controls the forward and backward movement of the flange clamper and the nut runner in the axial direction of the whetstone shaft. A detachment mechanism, and a first exchange position for attaching and detaching the old and new whetstones to the whetstone shaft, and a second exchange position where an exchange stand for waiting the new whetstone and receiving the old whetstone is installed. A grindstone changing device for a grindstone cutting machine, characterized in that it is also equipped with a displacement mechanism for controlling the movement of the mechanism.