JPH09253968A - Tool changing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the number of part items to be reduced with a simple mechanism, cause a control of these component parts to be easily carried out and then to enable a tool to be fixed or removed in a short time. SOLUTION: As a main spindle 110 is caused to approach a tool changing device 10, a tool holder 108 is engaged with holding claws 90a, 90b at a first fixing or removing section 52a. In addition, as the main spindle 110 approaches the tool changing device 10, a slider 54 slides in a direction indicated by an arrow D, a connector member 74 is displaced in a direction of an arrow G, the tool holder 108 is removed from the main spindle 110. As the engaging claw 70 is displaced upwardly above an abutting surface 28 of the groove section 26, a sliding base 38 is slid under a biasing action of a first cylinder 16 and then a second fixing or removing section 52b is displaced to a position where it is biased by a second cylinder 18. Then, the second cylinder 18 is biased in advance in a direction of an arrow E, a connecting member 74 is displaced in a direction of arrow F and the tool holder 108 is installed at the main spindle 110.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tool changing device for easily changing a tool of a processing device.

[0002]

2. Description of the Related Art A tool changing device is, for example, the actual machine shovel 63.
There is a technical idea disclosed in Japanese Patent Laid-Open No. 133945. In this tool changer, the drive shaft has a parallel cam,
With a cylindrical cam, the arm shaft is intermittently rotated and moved forward and backward, the pawl of the arm is opened and closed by a cam ring arranged on the arm shaft, and the cam ring is intermittently driven by a front cam arranged on the drive shaft. To do. Further, the tool is unclamped by the second link which is intermittently driven via the second cylindrical cam provided on the drive shaft.

Further, in the tool changer for machine tools disclosed in Japanese Utility Model Laid-Open No. 63-70840, a tool magazine which rotates in an inclined state is fixedly provided at the tip of a magazine fixing arm above the column, and the tool is provided. The magazine is provided with a large number of tool changing arm units radially. In this tool changing device, the tool changing arm unit is provided with a link mechanism, the link mechanism is provided with an arm block, and the arm block is moved forward and backward with respect to the spindle head by the displacement of the link mechanism. Therefore, when the spindle head is moved up and down on the side surface of the column, the link mechanism is displaced and the clamp claw provided on the arm block holds the tool, and the arm block is displaced, so that the tool is replaced. .

Further, in the tool exchanging mechanism disclosed in JP-A-3-221341, a rotatable turret attached to a machine tool, a four-bar linkage mechanism arranged around the turret, and a four-bar linkage. It has a gripper attached to the link mechanism, a spindle head that is linearly movable in the mounting direction of the tool holder, and a cam fixed to the spindle head. In this mechanism, the link mechanism is displaced by the cam under the linear motion of the spindle head, the tool is attached to and detached from the spindle head by the gripper, and the tool is exchanged by rotating the turret.

Furthermore, in the machine tool disclosed in Japanese Unexamined Patent Publication No. 5-8142, a sleeve that is slidable in the axial direction relative to the main shaft and a tool holder fixed to the sleeve are carried. The selected tool holder is configured to be inserted into the receiving portion in the spindle from the magazine position by the gripping arm carrying the selected gripping arm.

[0006]

However, the automatic tool changer disclosed in Japanese Patent Laid-Open No. 63-133945 requires a large number of drive sources such as cams and motors, and has a large number of parts. It has been pointed out that the mechanism becomes complicated and large, and the price rises. Further, since the drive source is sequentially energized to sequentially actuate the mechanism such as the cam, the control itself becomes complicated and it is substantially difficult to shorten the time required for exchanging the tool. Therefore, this automatic tool changer cannot significantly increase the production efficiency.

A tool changing device disclosed in Japanese Utility Model Laid-Open No. 63-70840, Japanese Patent Laid-Open No. 22134/1993.
Since the tool changing mechanism disclosed in Japanese Patent Publication No. 1 or the machine tool disclosed in Japanese Patent Laid-Open No. 5-8142 is attached to the spindle of the processing apparatus, the processing apparatus itself becomes large and the occupied space becomes large. There is an inconvenience that the space in the factory cannot be used effectively.

The present invention has been made to solve the above various problems, and has a simple mechanism and a small number of parts,
It is an object of the present invention to provide a tool changer that is easy to control, allows a tool to be attached and detached in a short time, and occupies a small space.

[0009]

In order to achieve the above-mentioned object, the present invention is a tool changing device for attaching and detaching a tool to and from a spindle of a processing device, wherein the frame member is provided on the frame member, and A slide base that is displaceable in a direction relatively orthogonal to the axial direction of the main shaft, a cam portion provided on the slide base, and a first biasing means that biases the slide base in the displacement direction, Two sliders provided on the slide base and capable of being displaced in a direction relatively approaching or separating from the main shaft, and one of the sliders is biased in a direction relatively approaching or separating from the main shaft. Second urging means, a crank mechanism provided on each slider, and a crank mechanism provided on the crank mechanism and engaged with the cam portion to control rotation of the crank mechanism and the slider. An engaging claw that performs displacement control and engages an abutment surface provided on the frame member to control displacement of the slide base; a connecting member configured to be displaceable by the crank mechanism; and the connecting member. And a pressing member that is provided on the connecting member and that abuts and presses against the main shaft.

According to the present invention, when the tool is removed from the spindle, the first biasing means is first biased. At this time,
The engaging claw is engaged with the contact surface, and the slide base does not slide. When the main spindle relatively approaches the tool changer, the tool attached to the main spindle engages the gripping claw, the main spindle presses the pressing member fixed to the connecting member, and one slider slides on the slide base. Move. When the slider slides to a predetermined position, the engagement claw is rotationally controlled by the cam portion, the crank mechanism rotates, the coupling member is displaced, and the tool engaged with the grip claw is removed from the spindle. At this time, the engagement between the engaging claw and the contact surface is released, and the slide base is displaced in the direction orthogonal to the axial direction of the main shaft under the urging action of the first urging means, and the other slider is moved. Is displaced to a position biased by the second biasing means. Next, when the second urging means is urged to displace the main shaft in the direction in which it is relatively separated from the tool changing device, the crank mechanism provided on the other slider rotates and another tool is moved. The engaging claws are displaced and the tool is mounted on the spindle. And
The link rotates together with the crank mechanism, the engaging claw is controlled by the cam portion, and the slider becomes displaceable, and the slider slides on the slide base under the urging action of the first urging means.
Then, a tool is attached to the spindle and is separated from the tool changer.

In this case, the abutment surface of the frame member is provided with a cam portion, and when either one of the two sliders is in a position to be urged by the second urging means, If the cam portions of the slide base and the cam portion of the frame member form a continuous surface, the cam portion with which the engaging claws engage increases the rotation control of the crank mechanism and displacement control of the slider. It is easy and preferable.

Further, in this case, when a roller is axially attached to the pressing member, the connecting member is smooth when the main shaft comes into contact with the pressing member and the connecting member is displaced in the axial direction of the main shaft. It is preferable because it can be displaced.

Further, in this case, when a spring for pulling the crank mechanism in a predetermined direction is suspended from the crank mechanism to the connecting member, when the spindle is displaced in the direction away from the tool changing device, It is preferable that the crank mechanism rotates by being pulled by a spring.

Furthermore, in this case, an adjusting screw is provided on the crank mechanism so that the adjusting screw can be screwed into the crank mechanism, and a stopper on which the adjusting screw abuts when the crank mechanism rotates is provided on the connecting member. When the position of the grip claw is determined by adjusting the angle of rotation of the grip by the adjusting screw, the position of the grip claw is adjusted according to the tool that engages with the spindle, which is preferable.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION A tool changing device according to the present invention will be described below in detail with reference to the accompanying drawings, by way of preferred embodiments.

1 and 2, reference numeral 10 indicates a tool changing device according to this embodiment. The tool changing device 10 includes a base 12 that is rotatable around a point A, and a substantially rectangular frame member 14 is fixed to the upper portion of the base 12. A first cylinder 16 is fixed to the short-side wall portion of the frame member 14, and a second cylinder 18 is fixed to the long-side wall portion of the frame member 14, and the cylinder rods 20 and 22 of the respective cylinders 16 and 18 are fixed. It is inside the frame member 14 and can move back and forth. As shown in FIGS. 2 and 3, on the bottom surface of the frame member 14, the hole portion 2 is provided immediately below the axis of the second cylinder 18.
4 is defined, and the bottom of the hole 24 is closed by the upper surface of the base 12 to form a groove 26. A wall portion along the longitudinal direction of the groove portion 26 has a contact surface 28 on which an engaging claw described later engages.
Cam portions 30a and 30b are formed on the corresponding contact surface 28 from one end portion of the groove portion 26 to substantially the center portion. Horizontal surfaces 32 are formed on the lower surfaces of the cam portions 30a and 30b, and inclined surfaces 34 are formed on the ends of the cam portions 30a and 30b. The inclined surface 34 is shown as a straight line in the present embodiment, but may be curved. A concave portion 36 is defined at a position facing the second cylinder 18 fixed to the frame member 14.

A slide base 38 is provided inside the frame member 14 so as to be slidable in the longitudinal direction (directions of arrows B and C), and the slide base 38 is a flange portion formed on the upper portion of the frame member 14. It is retained by 40 (see FIG. 3). A groove 41 having a substantially T-shaped cross section is defined in one wall portion of the slide base 38 in the lateral direction, and the groove 41 has a cylinder rod 20 of the first cylinder 16 therein.
The flange-shaped tip 43 of the
When the cylinder 16 is urged, the slide base 38 slides in the arrow B or C direction. The slide base 38 has grooves 42a, 4a extending in the urging direction of the second cylinder 18, that is, in the lateral direction of the frame member 14.
2b is defined, and substantially rectangular hole portions 44a, 44b are defined on the bottom surface forming the groove portions 42a, 42b. The wall portion forming the holes 44a and 44b has the hole 44
The cam portion 4 extends from one end of each of a and 44b to the substantially central portion.
6a and 46b are formed. An inclined surface 48 is formed at the end of each of the cam portions 46a and 46b.
When 8 slides and one of the hole portions 44a and 44b communicates with the groove portion 26, the inclined surface 48 and the inclined surface 34 form a continuous surface as shown in FIG. Is composed of. Although the inclined surface 48 is a linear surface, it may be a curved surface like the inclined surface 34.

A first attaching / detaching portion 52a and a second attaching / detaching portion 52b are respectively fitted in the groove portions 42a, 42b so as to be displaceable in the directions of arrows D and E. Explaining the first attachment / detachment portion 52a, the attachment / detachment portion 52a includes a rectangular slider 54 that is slidable in the groove portion 42a, and the slider 54 is a flange formed on an upper portion of a wall portion forming the groove portion 42a. The part 56 prevents the upward movement. A rectangular hole 58 is defined in the center of the slider 54, and an inclined surface 59 is formed on one of the short-side walls forming the hole 58. Shaft members 60 and 62 are bridged in parallel with each other on a wall portion along the longitudinal direction of the hole portion 58. One shaft member 60 has a first link member 64 bent in an L shape.
The corners of the are pivotally supported in the directions of arrows F and G. The short arm 68 of the first link member 64 has the cam portion 46.
It is formed narrow so that the gap between a and the cam portion 46b can be displaced. An engaging claw 70 having one curved surface is formed at an end of the arm 68 of the first link member 64, and the engaging claw 70 is engaged with the cam portions 30a, 30b, 46a, 46b. The rotation control of the first link member 64 is performed. On the other shaft member 62, one end portion of a second link member 66 formed in a substantially U-shape is rotatably supported in the directions of arrows F and G. In fact, the second link member 66 has two parallel arm members 6
6a, 66b. When the second link member 66 is rotated in the direction of arrow F, the second link member 66 comes into contact with the inclined surface 59 and the second
The rotation of the link member 66 is restricted. A curved plate member 72 is fixed between the two arm members 66a and 66b of the second link member 66 (see FIG. 3).

A substantially U-shaped connecting member 74 is axially supported by shaft members 76 and 78 at the other ends of the first link member 64 and the second link member 66, respectively.
Link member 64, second link member 66, and connecting member 7
A crank mechanism is constituted by 4. The connecting member 7
4 includes a pin member 80 between the shaft member 76 and the shaft member 78.
Is bridged, and a spring 82 is provided inside the U-shape of the second link member 66 from the pin member 80 to the shaft member 62.
Is suspended. Therefore, the spring 82 causes the slider 5 to move.
4 and the connecting member 74 are urged in a direction of approaching each other. A mounting member 84 is provided below the connecting member 74 so as to extend downward, and a roller 86 is rotatably attached to the lower end of the mounting member 84.

On the upper end side of the connecting member 74, as shown in FIG. 4, a wide supporting portion 88a extending in the horizontal direction,
88b is formed, and the support portion 88a and the support portion 88b are separated from each other by a predetermined distance. The supporting portions 88a, 8
A pair of grip claws 90a in a space defined by 8b,
90b is inserted, and the substantially central portions of the gripping claws 90a and 90b are rotatably supported by pin members 91a and 91b. One end side of the gripping claws 90a and 90b is curved, and a convex portion 93 having a substantially triangular cross section is formed on the curved inner surface along the longitudinal direction of the gripping claws 90a and 90b. Has been done. The grip claws 90a and 90b
The other ends of the plate-like member 7 are bent so that they approach each other, and their end surfaces 95a and 95b are slightly separated from each other.
It is configured so that the tip end of 2 faces.

A spring 92 is provided in the gap between the support portions 88a and 88b, and the grip claws 90a and 90b are provided in the spring 9.
The tip ends of the gripping claws 90a and 90b on the curved side are urged in a direction in which they approach each other by the two. A substantially T-shaped pressing member 94 is provided in the gap between the supporting portions 88a and 88b so that the curved-side tips of the gripping claws 90a and 90b are supported with a predetermined gap therebetween. A hole 96 is defined in the support portion 88b, and when the second link member 66 rotates, the tip end of the plate member 72 enters the hole 96, and the end surfaces of the grip claws 90a and 90b. The gripping claws 90a, 90b are arranged so that the curved tip ends of the gripping claws 90a, 90b are not separated from each other by a predetermined distance by intervening in the 95a, 95b.
Hold.

The detachable portion 52b is the detachable portion 52b.
Since the structure is the same as that of a, the same components are designated by the same reference numerals, and detailed description thereof will be omitted.

The tool changer 10 according to this embodiment is
Basically, it is configured as above,
Tool holder 10 which is detached by the tool changer 10
8 will be described.

As shown in FIG. 2, the tool holder 108 holds one end of the tool body 102 of the cutting tool 100. The tool holder 108 includes an engagement portion 104 formed in a substantially cylindrical shape, and a groove portion 10 defined on an outer circumference of the engagement portion 104.
6 and a tapered portion 1 formed at one end of the engaging portion 104 and having a diameter smaller than that of the engaging portion 104 and gradually tapering.
And 09.

This cutting tool 100 comprises a spindle 1 of a processing apparatus.
10, the taper portion 109 of the tool holder 108 engages with the mounting portion 112 of the spindle 110.
Also, when the tool holder 108 holding the cutting tool 100 is mounted on the magazine 116, the tapered portion 109 of the tool holder 108 is also engaged with the mounting portion 118 of the magazine 116. A pressing portion 120 is provided on the outer surface of the spindle 110 or the magazine 116 so as to face the tool changing device 10. The magazine 11
As shown in FIG. 5, 6 is disposed with a predetermined angle deviation with respect to the spindle 110 about a point A of the tool exchanging device 10, and the spindle 110 and the magazine 116 are respectively arranged in the tool exchanging device 10. It is configured so that it can freely approach and separate from.

Next, the tool changing device 1 according to the present embodiment.
The operation of 0 will be described.

First, the tool holder 108 is removed from the main shaft 110 by the first attaching / detaching portion 52a, and the second attaching / detaching portion 52b.
The case where another tool holder 108 is mounted on the spindle 110 will be described.

As shown in FIG. 1, the second cylinder 18 expands to displace the first attachment / detachment portion 52a in the direction of arrow E, so that the connecting member 74 approaches the main shaft 110. On the other hand, as shown in FIG. 2, the first link member 64 and the second link member 66 are rotated in the direction of arrow F, and the grip claws 90 a and 90 b are displaced to the same height as the groove portion 106 of the tool holder 108. ing.
At this time, the engaging claw 70 slides on the end of the groove 26 and is in contact with the horizontal surfaces 32 of the cams 30a and 30b. Also,
Although the first cylinder 16 is biased in the direction of arrow B, since the engaging claw 70 is in contact with the contact surface 28 of the groove 26,
The slide base 38 cannot slide in the frame member 14 in the arrow B direction.

After the above preparation steps, the spindle 110
When the tool is moved closer to the tool changer 10, the tool holder 108
The engaging claws 90a, 9 of the first attaching / detaching part 52a
0b abuts against each other and displaces the gripping claws 90a and 90b in a direction in which they are separated from each other against the elastic force of the spring 92, so that the engaging portion 104 enters the gap between the gripping claws 90a and 90b, and The convex portions 93 of the gripping claws 90a and 90b are engaged with the groove portions 106 of the joining portion 104. Further, the spindle 110 is the tool changer 1
When displaced to the 0 side, the pressing portion 120 of the main shaft 110 contacts the roller 86 and presses the connecting member 74 in the arrow D direction.
At this time, since the engaging claw 70 is engaged with the horizontal surface 32 of the cam portions 30a and 30b, the first link member 64 and the second link member 66 do not rotate in the arrow G direction, and as shown in FIG. Then, the second cylinder 18 retracts under the pressing action of the main shaft 110, and the slider 54 slides in the direction of arrow D.

When the slider 54 slides inside the groove portion 42a to the end, the engagement between the engaging claw 70 and the horizontal surface 32 of the cam portions 30a and 30b is released, and the first link member 64 becomes rotatable. Therefore, as shown in FIGS. 7 and 8, the roller 86 is pressed by the pressing portion 120, the connecting member 74 is displaced in the direction of arrow G against the tensile force of the spring 82, and the tool holder 108 is rotated by the spindle 110. Removed from. At this time,
The plate-shaped member 72 enters the hole portion 96, and the grip claws 90a, 90
It intervenes in the gap between the end faces 95a and 95b of b. Therefore,
The tips of the gripping claws 90a and 90b are not separated by a predetermined distance or more, and the tool holder 108 is prevented from falling off.

When the engaging claw 70 is displaced upward from the contact surface 28 of the groove portion 26 under the rotating action of the second link member 66, the slide base 38 moves the first cylinder 16 as shown in FIGS. Slide in the direction of arrow B under the urging action of. Therefore, the first attaching / detaching portion 52a and the second attaching / detaching portion 52b are displaced,
The second attaching / detaching portion 52b is displaced on the axis of the second cylinder 18. At this time, since the engaging claw 70 of the second attaching / detaching portion 52b is in contact with the inclined surface 48 of the cam portions 46a and 46b,
The slider 54 is prevented from sliding in the arrow E direction.

Next, when the main shaft 110 is displaced in the direction of arrow E, as shown in FIG. 6, the tension of the spring 82 and the pressing force of the second cylinder 18 cause the first link member 64,
The second link member 66 rotates in the arrow F direction, and the connecting member 7
4 is displaced and the tool holder 108 is mounted on the spindle 110. Then, the engaging claw 70 and the cam portions 30a, 30b, 46
The engagement with the inclined surfaces 34 and 48 of a and 46b is released.

When the main shaft 110 is further displaced in the direction of arrow E, the slider 54 is subjected to the biasing action of the second cylinder 18 as shown in FIGS.
2b, the engaging claw 70 engages with the horizontal surface 32 and slides on the end of the groove 26. When the main shaft 110 is separated from the tool changing device 10, the ends of the gripping claws 90a and 90b are separated from each other against the elastic force of the spring 92, and the tool holder 108 is opened.
Gripping claws 90a, 90b with the main body mounted on the spindle 110.
Removed from

As described above, when the tool holder 108 mounted on the tool changing device 10 is replaced with another tool holder 108 mounted on the magazine 116, the tool changing device 1
The 0 is rotated about the point A to direct the second attachment / detachment portion 52b toward the magazine 116, and the first cylinder 16 is biased in the direction of arrow C. The magazine 116 is brought closer to the tool changing device 10, and the tool holder 108 is attached to the second attaching / detaching part 52b in the same manner as described above (see FIGS. 8 and 9), and the first cylinder 1
The slide base 38 is slid under the urging action of 6, and the first
The attachment / detachment portion 52a is displaced on the axis of the second cylinder 18 (see FIG. 7). Then, when the magazine 116 is separated from the tool changing device 10, the first attaching / detaching portion 52a is formed as described above.
The tool holder 108 mounted on the magazine is mounted on the magazine 116 (see FIG. 1).

Next, the tool changing device 10 is rotated again about the point A to direct the first attaching / detaching portion 52a to the spindle 110, and the tool holder 108 mounted on the spindle 110 is replaced.

In the tool changing device 10 of the present embodiment, the pin members 91a and 91b are located at substantially the centers of the gripping claws 90a and 90b.
Is rotatably supported by a spring, and a spring 92 holds a gripping claw 90a,
Although the tip ends of 90b are biased toward each other, as shown in FIGS. 11A and 11B, elastic plate-like members 124a and 124b are fixed to the tip ends of the connecting members 74 with screws 126, Projections 128a and 128b that engage with the groove 106 of the tool holder 108 may be fixed to the tips of the plate-shaped members 124a and 124b with nuts 130.

As shown in FIGS. 12A and 12B,
The grip claws 132a and 123b may be formed of a member having elasticity such as a synthetic resin and fixed to the connecting member 74 with a screw 134. In this case, the engaging portions 136a and 136b that engage with the groove portion 106 of the tool holder 108 are formed of metal or hard synthetic resin, and the gripping claws 132a and 132a are formed with screws 138.
It may be fixed to 32b.

Further, the tool changing device 10 of the present embodiment.
Then, the spring 82 is the pin member 8 provided on the connecting member 74.
0 to the shaft member 62 provided on the slider 54, but as shown in FIGS. 13 and 14, from the first supporting portion 140 formed at the end of the first link member 64 to the connecting member 74. You may suspend on the provided 2nd support part 142.

In this case, the first support portion 140 is formed by bending with respect to the first link member 64, and when the first link member 64 is rotated to the position shown in FIG. Extend to point. The first support portion 14
The end portion of 0 projects to one side and is formed as a protruding portion 144, and a hole portion 146 is defined in the protruding portion 144. The second supporting portion 14 is provided on the connecting member 74 above the mounting member 84.
2 is fixed, and a hole 152 is defined in the second support portion 142. A spring 154 is suspended from the hole 152 of the second support part 142 to the hole 146 of the first support part 140, and the spring 154 causes the first support part 140 and the second support part 142 to approach each other. A tensile force acts in the direction.

An adjusting screw 148 is screwed into the first support 140 through the first support 140. On the other hand, a stopper 150 is fixed to the connecting member 74, and the stopper 150 can come into contact with the end portion of the adjusting screw 148. When the first link member 64 rotates in the direction of arrow F and the adjustment screw 148 contacts the stopper 150,
With the shaft member 76 as the center, the first supporting portion 140 and the connecting member 7
The angle of 4 is displaced by adjusting the protruding amount of the adjusting screw 148, and thereby the angle between the first link member 64 and the slider 54 is changed. In this case, as shown in FIG. 15, the gap between the upper portion of the base 12 and the horizontal surfaces 32 of the cam portions 30a and 30b is formed to be larger than the thickness of the engaging claw 70,
When the angle of the first link member 64 is changed, the engaging claw 70 is displaced between the base 12 and the horizontal plane 32, and the angle of the first link member 64 can be adjusted within this range. Is. Therefore, the connecting member 74 is the first link member 6
4. Since the slider 54 is always held in parallel with the slider 54 by the second link member 66, the height of the grip claws 90a and 90b can be adjusted by adjusting the protrusion amount of the adjusting screw 148. . In this case, the adjusting screw 148 has a height of the gripping claws 90a and 90b which is equal to that of the tool holder 1.
It is adjusted to match the groove portion 106 of 08.

When the spindle 110 is brought close to the tool changer 10, the heights of the gripping claws 90a and 90b are set to the tool holder 108.
Since it matches the groove portion 106 of the
b can easily hold the tool holder 108.

When the spindle 110 is further brought closer to the tool changer 10, as shown in FIG. 14, the first link member 64
Rotates in the direction of arrow G against the tensile force of the spring 154, and the tool holder 108 is held by the gripping claws 90a and 90b.
Removed from 10.

[0043]

According to the tool changer of the present invention, the following effects and advantages can be obtained.

Since the cutting tool can be exchanged by simply urging the first urging means and the second urging means as necessary and moving the spindle or the magazine closer to or further from the tool changer, the control can be performed. The cutting tool can be easily attached and detached in a short time, and the production efficiency of the cutting process using this tool changer is improved. Further, since the driving source is small and the mechanism is simple, the number of parts is small, and the cost of the tool changer can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing a tool changing device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II showing the tool changing device of FIG.

3 is an exploded perspective view showing a part of a frame member, a slide base, a first attaching / detaching portion and a second attaching / detaching portion of the tool changing device of FIG. 1. FIG.

FIG. 4 is a partially omitted perspective view showing a grip claw of the tool changing device of FIG. 1.

5 is a plan view showing an arrangement state of the tool changing device of FIG. 1, a spindle and a magazine. FIG.

FIG. 6 is a vertical cross-sectional view showing a method of using the tool changing device of FIG. 1 and showing a state in which the cutting tool is engaged with the grip claws.

FIG. 7 is a plan view showing a method of using the tool changing device of FIG. 6 in a state where the cutting tool is removed from the spindle.

8 is a vertical cross-sectional view showing a method of using the tool changing device of FIG. 1 in a state where the cutting tool is removed from the spindle.

9 is a plan view showing a method of using the tool changing device of FIG. 1 in a state where the second attaching / detaching portion is displaced on the axis of the second cylinder.

10 is a plan view showing a method of using the tool changing device of FIG. 1 in a state where a cutting tool is mounted on a spindle.

11 shows a tool changing device according to another embodiment of the present invention, FIG. 11A is a partially enlarged plan view of a grip claw, FIG.
B is a side view of the cutting tool engaging with the gripping claw.

FIG. 12 shows a tool changing device according to still another embodiment of the present invention, FIG. 12A is a partially enlarged plan view of a grip claw,
FIG. 12B is a side view of the cutting tool engaged with the grip claws.

FIG. 13 is a vertical cross-sectional view showing a tool changing device according to still another embodiment of the present invention.

FIG. 14 is a vertical cross-sectional view showing a method of using the tool changing device of FIG. 13, with the cutting tool removed from the spindle.

15 is a partially cutaway enlarged vertical sectional view showing an engaging claw of the tool changing device of FIG.

[Explanation of symbols]

10 ... Tool changing device 14 ... Frame member 16, 18 ... Cylinder 30a, 30b, 46a, 46b ... Cam part 38 ... Slide base 52a, 52b ... Attachment / detachment part 54 ... Slider 64, 66 ... Link member 70 ... Engaging claw 74 ... Connection member 86 ... Rollers 90a, 90b, 132a, 132b ... Gripping claws 100 ... Cutting tool 108 ... Tool holder 110 ... Spindle 116 ... Magazine

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Dai Arai 1-10-1 Shin-Sayama, Sayama-shi, Saitama Honda Engineering Co., Ltd.

Claims (5)

[Claims] 1. A tool exchanging device for attaching and detaching a tool to and from a spindle of a processing apparatus, comprising: a frame member; and a frame member, which is displaceable in a direction relatively orthogonal to an axial direction of the spindle. A slide base; a cam portion provided on the slide base; a first biasing means for biasing the slide base in its displacement direction; and a slide portion provided on the slide base and relatively approaching or separating from the main shaft. Direction, two sliders that can be displaced in any direction, a second urging means that urges one of the sliders toward or away from the main shaft, and a crank mechanism provided on each slider. And a rotation control of the crank mechanism and a displacement control of the slider, which are provided on the crank mechanism, engage with the cam portion, and are controlled by the contact surface provided on the frame member. An engaging pawl that controls displacement of the slide base in combination, a connecting member configured to be displaceable by the crank mechanism, a gripping pawl provided on the connecting member and engageable with a tool, the connecting member And a pressing member that is provided on the main shaft and is pressed against the main shaft. 2. The tool changer according to claim 1, wherein a cam portion is provided on an abutting surface of the frame member, and one of the two sliders is urged by the second urging means. The tool changing device, wherein the cam portions of the slide base and the cam portion of the frame member form a continuous surface when in the closed position. 3. The tool changing device according to claim 1, wherein a roller is axially attached to the pressing member. 4. The tool changing device according to claim 1, wherein a spring for pulling the crank mechanism in a predetermined direction is suspended from the crank mechanism to the connecting member. Characteristic tool changer. 5. The tool changing device according to claim 1, wherein an adjusting screw is provided in the crank mechanism so that the adjusting screw can be screwed into the crank mechanism.
By providing the connecting member with a stopper with which the adjustment screw abuts when the crank mechanism rotates, and adjusting the angle at which the crank mechanism rotates with the adjustment screw,
A tool exchanging device for determining the position of the grip claw.