JPS58171236A - Tool storing magazine - Google Patents

Abstract

PURPOSE:To simplify an exchanger and prevent a tool from coming off, by providing a preventing rail for tool coming off and a gate mechanism for tool exchange on a circumambulating route of a tool pot having an opening through which the tool can be attached and detached in a right angle direction with a spindle line of the tool. CONSTITUTION:A tool pot 110 is so constituted that it is circumambulated and driven along guide plates 105 and 106 of a tool storing magazine through a chain 104, which is formed in a U-shaped state, attachment and detachment of a tool is done at its open part and attachment and detachment actions are done is a right angle direction with a spindle line of the tool. A gate mechanism is provided at a tool exchanging position, which prevents normally the tool from coming off by lowering the gate 125 having rails 126 and 127 and turns a device into an exchangeable state of the tool by lifting the gate 125 at the time of exchange of the tool through action of a cylinder 123. A fixed coming off prevention rail is provided on the circumference other than the gate mechanism of the gate magazine.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tool storage magazine for storing tools used in a machine tool, such as a machining machine, in which tools of different shapes are sequentially replaced.

Conventional tool storage magazines use cylindrical tool pots,
The tool is inserted into and removed from the cylindrical tool pot in the axial direction of the tool. Therefore, when changing tools, two types of movement are required: vertical movement for attaching and removing the tool, and horizontal movement for conveying the tool, or a vertical movement different from the above-mentioned vertical movement, which has the disadvantage that controlling the movement of each part becomes complicated. be.

SUMMARY OF THE INVENTION An object of the present invention is to provide a tool storage magazine in which the tool exchange operation is simplified, the movement of each part can be easily controlled, and there is no risk of tools falling out.

According to the present invention, when a tool pot is formed with a tool support portion that is opened in a direction intersecting the tool axis so that the tool can be attached and detached, the tool support portion is formed opposite to the tool attachment/detachment opening of the tool pot, A rail to prevent tools from falling out inside the pot is provided along the pot circulation route, and a rail for tool exchange is provided along the pot circulation route.
f-) The rail of the mechanism section is separated from other parts and fixed to f-), which opens and closes when changing the tool, so that it opens and closes at the same time as the dart, thereby allowing the tool to be attached and removed in a direction that intersects the tool axis. In this way, the tool can be attached and detached using the movement of the tool that is sent in the direction that intersects the tool axis.
This objective is achieved by simplifying tool exchange operations and preventing tools from falling out of the magazine.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In FIG. 1, a tool storage magazine 100 is arranged on one side of a machine tool 11 that requires a large number of tools 90, and a tool changer 19 is arranged between these machine tools 11 and the magazine 100. . This tool changer w19 includes a column 21 for the tool changer, and a saddle 23 provided on the column 21 so as to be movable up and down is moved up and down by a motor 26. An arm support frame 34 is supported on the saddle 23 so as to be able to move left and right and rotate, and on both sides of the upper end of this frame 34 are tool holding arms 7, respectively.
0 is provided to be able to rise and fall.

The magazine 100 includes a base 101, and this base 10
At both longitudinal ends of 1, drive-side and driven-side grooves 102, 103 are rotatably supported, and a chain 104 is hung between these grooves 102, 103. 104 has a large number of tool pots 1
10 is attached.The rotation of this cheno 104 is as follows.
It is detected by a rotary encoder 107 provided on the drive side sprocket 102.

The pot 110 has a pot body 111 which is an integral body with a U-shaped side surface, as shown in enlarged form in FIGS. 2 to 4.
A small U-shaped groove 113 for locking the neck of the pull stud 91 of the tool 90 is formed on one side of the upper protrusion 112 of this pot body 111, and a small U-shaped groove 113 is formed within this U-shaped groove 113. A pair of pole plungers 114 are screwed in so that a portion thereof protrudes, thereby preventing the Solstud 91 from being removed. In addition, the lower protrusion 1 of the pot body 111
15 is formed with a large U-shaped groove 116 having a tapered surface that locks the taper shank 92 of the tool 90, and a key 117 is fixed so as to partially protrude into this U-shaped groove 116. The key 117 is engaged with a keyway (not shown) of the tool 90 to prevent the tool 90 from rotating. Here, the U-shaped groove 113 of the upper protrusion 112
and the U-shaped groove 116 of the lower protrusion 115 form a tool support portion, and this tool support portion is opened in a direction intersecting the central axis of the tool 90, that is, in the horizontal direction. Furthermore, cam followers 118 each consisting of a roller are provided at two locations on the upper surface and three locations on the lower surface of the pot body 111, and these cam followers 118 are connected to the base 10.
It is engaged with and guided by upper and lower guide plates 105 and 106 attached to the chino 104 along the chino 104. At this time, among the cam followers 118, especially the three cam followers 118 attached to the lower protrusion 115 are placed in positions where neither the straight portion 106A nor the curved portion 106B of the guide plate 106 impairs its role as a guide. It is located in

In FIG. 1, a dart mechanism 120 that opens and closes when exchanging a tool 90 is provided in a portion of the magazine 100 that faces the arm 70 of the tool changer 19, and a tool set opening and closing mechanism is provided near the center on the opposite side. 140
Further, a heavy tool setting mechanism 160 is provided on the opposite side of the opening/closing mechanism 140, that is, on the same side as the r-) mechanism 120 and on the other end side.

As shown in Figure 5, the dart mechanism 120 includes an r-) frame 121 erected on a base 101, and a dart opening/closing mechanism whose end is attached to the dart frame 121 via a stand 122. Cylinder 123 and the tip V of the piston rod 124 of this cylinder 123
r, a fixed goo) 125, and a tool attached to the upper and lower parts of this f-) 125 and facing the peripheral surface of the pull stud 91 and the lower part of the taper shank 92 of the tool 90, which is housed in the tool 90 (b) 110. Upper and lower rails 126, 127 for preventing the slider 90 from falling off, and the upper guide plate 1
A positioning cylinder 128 is fixed on the pot 1. The positioning cylinder 128 is slidably housed in the cylinder 128 and has one end protruding from the cylinder 128.
A piston 129 that can be inserted into the positioning bush 119 of No. 10 and that positions the pot 110 when inserted.
and a drag 131 attached to the other end of the piston 129 protruding from the head canopy f-130 of the cylinder 12B.
and was confronted by this Dog 131 and Platan)
The piston position detecting head 135 includes a pair of piston position detecting heads 133 fixed to the cylinder 128 via a mounting plate 132, and a tool presence/absence detecting head 135 mounted to the cylinder 128 via a mounting plate 134 and disposed opposite to the upper surface of the tool pull stud 91. , Knee J ([f-) 125 can be opened and closed by activating the cylinder 123 after positioning the tool pot 110 with the piston 129 when replacing [0].

As shown in FIG. 6, the tool set opening/closing mechanism 140 includes a cylinder 142 supported by a trunnion on a base 101 via a bracket 141, and a bearing 144 at the tip of a piston rod 143 of the cylinder 142. The upper guide plate 10 is rotatably connected through the
a substantially R-shaped turning cover 147 whose one end is rotatably supported via a shaft 146 on a mounting plate 145 fixed to the mounting plate 145;
Upper and lower rails 148 and 149 are fixed to the middle and lower end of the cover 147 and are opposed to the outer peripheral surfaces of the Solstud 91 and flange 93 of the tool 90 to prevent the workpiece A 90 from falling off, and are provided protruding from the outer surface of the cover 147. and a dog 151 that operates a limit switch 150 fixed to the mounting plate 145 when the cover 147 is rotated upward, and the cover 147 can be opened and closed by operating the cylinder 142.

The heavy tool setting machine 111160 has a base 161
A slider 162 is slidably supported on this base 161 and is allowed to advance toward each tool pot 110 by a cylinder (not shown); a rotating arm 163 that is driven to rotate between the moving direction of the slider 162 and a direction orthogonal thereto by an independent driving source and grips a heavy tool 90; and the tool set opening/closing machine @1.
It is composed of a cover 164 similar to the swivel cover 147 of No. 40, and a cylinder 165 that drives the cover 164 to swivel.The swivel arm 163 receives a heavy tool 90 that cannot be mounted by hand and is transported by a crane or the like. It can be attached to the pot 110.

In addition, in the magazine 100, the dart mechanism 120 is arranged around each barrel 110 connected to the cheno 104.
and each rail 126, 1 of the tool set opening/closing mechanism 140
Rail 108, 109 corresponding to 27, 148, 149
is provided on the side of the tool pot 110 facing the tool attachment/detachment opening to prevent each tool 90 from falling off from the pot 110 while the chino 104 is rotating. Also, code 1
Reference numeral 70 denotes a tool removal/removal device for a horizontal axis attachment attached to the machine tool 11, and is supported by the saddle 23 via a bracket 171.

Next, the operation of this embodiment will be explained.

At the start of the tool change operation, a new tool 90 to be used next is placed on the left arm 70 of the tool change device 19 in FIG.
is attached, while the right arm 70 is left empty. In this state, the main shaft (not shown) of the machine tool 11 moves to the position of the right arm 7o, and the used tool 90
is transferred from the main shaft to the arm 70. During this transition, the left arm 70 is rotated 90 degrees downward from the horizontal position shown in the drawing to be in a vertical position so that it does not interfere with the 180 degree rotation of the frame 34 in the counterclockwise direction in the drawing. . By this rotation, the new tool 90 is moved to the old tool side, that is, the spindle side of the machine tool 11, the old tool 90 is moved to the new tool side, and the new tool 90 is further transferred to the spindle.

On the other hand, the new tool 90 is removed, and the frame 34 in which only the old tool 90 remains is moved to the left together with the saddle 23, and a tool exchange operation is performed between the frame 34 and the tool storage magazine 100. In this operation, first, the cylinder 123 of the dart mechanism 120 is actuated to raise the gate 125.
f-) 125 is opened, and the saddle 23 is moved to connect the arm 70 and the pot 11 in the magazine 100.
Alignment with 0 is performed. At this time, an empty pot 110 for storing the old tool 90 is placed in the part f-) 125.
has been placed in advance and is ready to receive the old work 490.

Next, a cylinder (not shown) installed in the saddle 23 and the frame 34 is driven, and the frame 34 moves into the magazine 1.
00 side, and the old tool 90 supported by the arm 70 is inserted into the empty pot 110. After this, arm 7
0 are brought into an unclamped state, the cylinder 123 of the dart mechanism 120 is operated in the opposite direction to the above, the gate 125 is closed, and the tool 90 is moved by the upper and lower rails 126 and 127 fixed to the dart 125. Escape prevention will be carried out. In this state, when the frame 34 is moved away from the magazine 100, the tool 90
comes off from the arm 70 and remains in the I seat 110.

Next, the positioning piston 129 of the dart mechanism 120
is raised to make the pot 110 movable, and the chino 104 of the magazine 100 is automatically driven to search for a new tool 90 to be used next, and this new tool 90 is placed in the position of the dart mechanism 120. Kuru and Cheno 10
4 is stopped and cylinder 128 is actuated to move piston 1
The tip of the pot 110 is inserted into the positioning bush 119 of the pot 110 to position and fix the pot 110.

When the selection of the new gavotte 110 is completed, the frame 34 is moved to the magazine 100 side again, and the new tool 90 is clamped by the hands of the arm 70, and in this state, both hands of the arm 70 are clamped. When the clamping of the hand is completed, the dart 125 is released, and the frame 34 is then moved in a direction away from the magazine 100.

After this, f-) 125 is closed and again Cheno 104
is driven to search for an empty pot 110 in which to store the tool 90 currently attached to the spindle 14.
110 is stopped at the position of the gate 125, fixed in position, and prepared for the next operation described above.

The above operations are automatically performed by a program installed in a computer or the like based on signals from the position detection mechanisms of each part, and by repeating these operations, the tool 90 is sequentially automatically replaced.

Note that the tool 90 is installed in the magazine 100 using the tool 90.
0 can be installed by hand, the tool set opening/closing mechanism 14
This is done manually by operating the cylinder 142 of 0 and opening the swing cover 147. On the other hand, if the heavy tool 900 is too large to be installed by hand, the tool 90 is hoisted with a crane or the like and the heavy tool setting mechanism 140 is Swivel arm 143
Attach mechanically using

As described above, this embodiment has the following effects.

The tool pot 110 is U-shaped and is supported by the U-shaped grooves 113 and 116 of the upper protrusion 112 and the lower protrusion 115. Compared to a device in which a pull stud is locked with a sol-like stopper, the gripping structure and attachment/detachment are easier, and the device can be made smaller, lighter, and less expensive. In addition, in conventional pots with a cylindrical structure, tools are inserted and removed in the direction of the tool axis, so two systems of control are required: an elevator mechanism for vertically moving the changer and a vertically moving mechanism for attaching and removing tools. Since the tool 90 can be attached and detached using the horizontal movement of the tool 34, control becomes simple. At this time, there is a method in which the vertical movement is controlled in one system using a conventional device, but in this case, the accuracy of the control becomes a problem, and complex control is required to improve the accuracy. It doesn't come close to that.

The magazine 100 is provided with a dart mechanism 120, and in conjunction with the adoption of a bolt 110 that can be attached and detached in a direction intersecting the tool axis, that is, in a horizontal direction, the tool 90 can be attached and detached using a gate 125. Therefore, the chino 104 can be driven immediately after the tool 900 is attached or detached, and the working time can be shortened. Also, around the ceno 104 are rails 108, 1.
09,126°127,148,149 are provided, and among these, the rails 126,127 and 148,14 of the c-toe mechanism 125 and tool set mechanism 140 portion are provided.
9 is separated from other parts and fixed to f-)125 or turning force/amount-147, so the tool 90 can be reliably prevented from falling off, and it will not get in the way when replacing or setting the tool 90. It never becomes. Furthermore, since the tool setting opening/closing mechanism 140 and the heavy tool setting mechanism 160 are provided for manual setting, the tool 90 can be installed optimally depending on the size of the tool 90, etc. Work time can be shortened.

As described above, according to the present invention, it is possible to simplify the tool exchange operation and effectively prevent tools from falling off.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of the present invention installed in a tool storage magazine, FIG. 2 is a perspective view of a tool pot used in the tool storage magazine of FIG. 1, and FIGS. 3 and 4. 2 are a plan view and a bottom view of the tool pot shown in FIG. 2, and FIGS. 5 and 6 are enlarged sectional views of a dart mechanism and a tool set opening/closing mechanism of the tool storage magazine, respectively. 11... Machine tool, 19... Tool changing device, 90.
...Tool, 100...Tool storage magazine, 104...
・Cheno, 108.109...Rail, 110...
Tool pot, 111... Pot body, 113, 116
...U-shaped groove constituting the tool support part, 120...f-
) mechanism, 125... dart, 126, 127 river rail, 140... opening/closing mechanism for tool set, 148, 149
...Rail, 160...Large heavy tool set mechanism. Agent Patent attorney Sanzo Kinoshita (and 1 other person) Ward Otsu faction δ = 52 Yo =

Claims (1)

[Claims] (1) A tool support part is formed that is open in a direction intersecting the tool axis so that the tool can be attached to and removed from the tool pot rotated in a predetermined direction, and the tool support part is opened in the direction that intersects the tool axis. A rail for preventing tools from falling out inside the pot is provided on the side of the pot opposite to the tool attachment/detaching opening, and this rail is separated from other parts of the tool exchange mechanism section and serves as a gate that opens and closes during tool exchange. Tool storage magazine that is fixed.