TWI488709B - Tool changing system of tool machine and tool changing method thereof - Google Patents

Description

Tool changing system of tool machine and tool changing method thereof

The invention relates to a tool change system, in particular to a tool change system of a machine tool and a tool change method thereof.

Press, the machine tool is one of the indispensable important equipments in the development of the whole machinery industry, and each machine tool will be equipped with a tool magazine and an automatic tool change system. Through the tool change action of the automatic tool change system, the tool can be used. The library is exchanged with the tools on the spindle of the machine tool.

However, the conventional tool change program, respectively, rotary knife, straight broach, rotary tool change, embedded insert knife and rotary reset, but the operation of these programs is more, making the tool change speed slow, so that the machine tool The processing efficiency will be limited and cannot be improved. Moreover, due to the large number of program actions, the drive structure of the tool change arm needs to use more sensors and the complicated cam structure, which not only causes an increase in the overall cost, but also the machine tool. The volume cannot be reduced, resulting in limited design of the spindle or other functional structure.

Furthermore, as in the case of China's patent number M433259 "tool-tool changer structure", it mainly uses a special-shaped tool magazine to cooperate with the tool change arm to drive the tool magazine during the tool change operation, so that the machining tool to be exchanged slides. Go to the tool change position, and then use the tool change arm to execute the knives to exchange the tool of the tool magazine and the tool of the sipe, so as to achieve the tool change directly at the tool change position without adjacent The machining tool interferes, reducing the time required for tool change and the tool change structure.

However, the patented tool library has been specially designed so that the size of the machine tool cannot be reduced, and the track of the tool magazine is not a normal rectangle or a circle, so that the tool does not run smoothly in the track, which may affect the tool change. Time, as well as the problem of wear and tear on the parts.

In order to solve the above problems, the present invention discloses a tool changing system of a machine tool and a tool changing method thereof, which can directly clamp a knife by using a fixed point position, thereby eliminating the knives program and working time, thereby improving the efficiency of the machine tool.

In order to achieve the above object, the present invention provides a tool changer system for a machine tool, which is disposed on a machine tool having a spindle, the spindle device having a first tool, the tool change system comprising: a tool magazine having a plurality of tool pockets thereon Each tool holder can accommodate a second tool; a tool change arm is disposed between the main shaft and the tool magazine, and the two ends of the tool change arm respectively have a first clamping port and a second clamping port for selectively clamping Holding the first tool and the second tool, and the tool change arm can generate lifting and rotating motion relative to the machine tool for performing the tool change; and a tool shifting device is disposed between the tool magazine and the tool change arm for One of the tool pockets of the tool magazine is removed for the tool changer to clamp the first tool at the fixed position, or after the two tool exchanges are performed from the tool change arm, the first tool is taken and moved into the tool magazine.

Therefore, the present invention provides a tool changing method for a machine tool, comprising the steps of: pushing a knife, wherein the first tool and the second tool are respectively moved in the direction of the tool change arm by the autonomous axis and the tool magazine to be placed in the tool change arm The two ends; the clamping knife, the tool changing arm holds the first tool and the second tool at a fixed position; the lifting tool, the tool changing arm is pulled relative to the machine tool; the rotary tool changing, the tool changing arm is rotated relative to the machine tool, so that The first tool exchanges a position with the second tool; the tool insert, the tool change arm is reset relative to the machine tool to insert the first tool and the second tool into the exchanged position, respectively.

Thereby, the tool change arm of the invention directly clamps the tool to be exchanged at a fixed point position, and the tool change program is small, the tool change speed is fast, the machining efficiency of the machine tool can be effectively improved, and the unnecessary work can be reduced. The cam device and the sensor make the overall cost low, and the volume of the machine tool can be relatively reduced, thereby increasing the design space of other functions of the machine tool.

For the convenience of the description, the central idea expressed by the present invention in the column of the above summary of the invention is expressed by the specific embodiments. The various items in the embodiments are set forth in proportion to the description and not in the

Referring to FIG. 1 to FIG. 3, the tool change system of the machine tool of the present invention is disposed on a work tool 100. The machine tool 100 has at least one spindle 101 for mounting a first tool A, and the spindle 101 can be The tool machine 100 generates a lifting displacement, and the tool change system includes:

A tool magazine 10 is a ring shape having a plurality of knife sleeves 11 thereon, and each knife sleeve can accommodate a second tool B, and the tool magazine 10 is driven by a driving motor 12 to enable the knife pockets 10 11 moves in a ring shape, and the magazine 10 has a knife change port 13.

A tool change arm 20 is disposed between the main shaft 101 and the tool magazine 10. The two ends of the tool change arm 20 respectively have a first pinch 21 and a second pinch 22 for selectively clamping the first tool A and the second tool B, and the tool change arm 20 is subjected to a lifting and rotating action with respect to the machine tool 100 by a cam device (not shown) for performing a tool change operation program, wherein the first jaw 21 is The second clamping port 22 is elastically pivoted with a clamping member 23, respectively, so that the outer end of the clamping member 23 is normally closed to the two clamping openings 21, 22. In the preferred embodiment, the inner end of the clamping member 23 can be subjected to a spring. The clip member 23 is elastically disposed at the two jaws 21, 22 by being held (not shown).

A transfer device 30 is slidably disposed between the tool magazine 10 and the tool change arm 20. The transfer device 30 includes a pusher seat 31 for holding the cutter sleeve 11 and a pneumatic cylinder 32 for driving the pusher seat 31. 4, as shown in FIG. 5, the sliding seat 31 is slidably disposed on the knife changing port 13, and the sliding base 31 has a movable plate 311 and a corresponding fixing plate 312, and a spring element is disposed between the movable plate 311 and the fixed plate 312. 313, the movable plate 311 is extended by the pneumatic cylinder 32 and moved toward the fixed plate 312 to jointly clamp the knife sleeve 11, so that the driving seat 31 can be reciprocated by the driving of the pneumatic cylinder 32. Between the tool magazine 10 and the tool change arm 20, the tool pocket 11 of the tool magazine 10 is moved out of the tool magazine 10 in the direction of the tool change arm 20 (as shown in FIG. 5) for the tool change arm 20 to be clamped at the fixed position. After holding the second tool B or exchanging the tool from the tool change arm 20, the first tool A is taken and moved into the tool magazine 10.

As shown in FIG. 6 to FIG. 8 , the tool changing step of the tool change system of the present invention is illustrated. As shown in FIG. 4 , when the tool change operation is performed, the spindle 101 is first displaced toward the tool change arm 20 to make the first tool of the spindle 101 . A is placed in the first jaw 21 of the tool change arm 20, so that the first tool A is clamped and fixed by the clamp member 23. Synchronously, the knife transfer device 30 corresponds the tool magazine 10 to one of the tool changers 20. The sleeve 11 is removed in the direction of the tool change arm 20, so that the second tool B on the knife sleeve 11 is placed in the second jaw 22 of the tool change arm 20, so that the second tool B is clamped and fixed by the clamp member 23, The action of pushing the knife and the clamping knife is completed, wherein the changing arm 20 completes the action of clamping the tool at the fixed position, and the action and time of the holding tool are removed from the position of the conventional structure from the standby position to the position of the buckle.

As shown in FIG. 7 , after the tool change arm 20 clamps the tool, the tool change arm 20 can perform a knife lift operation with respect to the machine tool 100 to respectively remove the first tool A and the second tool B from the original position, so that For subsequent rotary tool change operations.

As shown in FIG. 8, the tool change arm 20 is rotated 180 degrees with respect to the machine tool after the tool is lifted to perform a rotary tool change, so that the first tool A and the second tool B exchange positions, and after the rotary tool change, change The tool arm 20 can be reset relative to the machine tool 100 to insert the first tool A into the tool holder 11 and the second tool B is inserted into the spindle 101 to complete the knife insertion operation, which can then be performed by the spindle 101 and the knife shifting device. The second tool B and the first tool A are respectively moved away from the tool change arm 20 in opposite directions, and the first tool A is brought into the tool magazine 10, thereby completing the entire tool change operation.

As described above, and referring to FIG. 9, it is a tool changing method of the machine tool of the present invention, and the steps thereof include:

Pushing the knife S01, the first tool A and the second tool B are respectively moved in the direction of the tool change arm 20 by the autonomous axis 101 and the tool magazine 10 to move the first tool A toward the tool change arm 20, and the second tool B is self-knife. The magazine 10 is removed and moved in the direction of the change arm 20 and corresponds to both ends of the change arm 20.

The clamping knife S02, the tool changing arm 20 is fixed at a fixed point position, receives the first tool A and the second tool B at both ends thereof, and clamps and fixes the first tool A and the second tool B.

The blade S03, the tool change arm 20 is pulled up relative to the machine tool 100 to pull the first tool A and the second tool B away from the original position, respectively.

Rotating the tool change S04, the tool change arm 20 is rotated 180 degrees with respect to the power tool 100 to allow the first tool A and the second tool B to exchange positions with each other.

The inserting knife S05, the tool changing arm 20 is reset relative to the power tool 100 to insert the first tool A and the second tool B into the exchanged position, respectively, and synchronously, the second tool B is displaced with the spindle 101 and is away from the change. The cutter arm 20, the first cutter A, is carried into the magazine 10 by the transfer tool unit 30.

Thereby, the tool changing system of the machine tool of the present invention and the tool changing method thereof eliminate the action and time of the rotary knives compared with the conventional structure, so that the tool to be exchanged directly performs the knife clamping action, and the tool change speed is fast. The utility model can effectively improve the processing efficiency of the machine tool; furthermore, since the tool changing program of the invention is small, the use of components such as the cam device and the inductor can be reduced, so that the overall cost is low, competitive, and the driver is changed. The arm cam device eliminates some of the parts, so that the size of the machine tool can be reduced, and the design space of other functions of the machine tool can be increased.

Moreover, the tool change arm of the present invention directly clamps the knife at a fixed position for subsequent tool change operations, so that the length of the tool change arm can be shortened, thereby reducing the swing space, and also facilitating the volume reduction and enhancement of the machine tool. Design space.

In addition, the tool magazine of the present invention does not need to be designed into a special shape and a non-rectangular or circular trajectory, so that the tool sleeve is smoother during the rotation process, and the machining efficiency of the machine tool can also be improved.

While the invention has been described in terms of a preferred embodiment, the various embodiments may The above embodiments are merely illustrative of the invention and are not intended to limit the scope of the invention. All modifications or changes made without departing from the spirit of the invention are within the scope of the invention.

10. . . Tool magazine

11. . . Knife cover

12. . . Drive motor

13. . . Tool change

20. . . Tool change arm

twenty one. . . First jaw

twenty two. . . Second jaw

twenty three. . . Clamp

30. . . Knife shifting device

31. . . Shift seat

311. . . Activity board

312. . . Fixed plate

313. . . Spring element

32. . . Pneumatic cylinder

100. . . Machine tool

101. . . Spindle

A. . . First tool

B. . . Second cutter

S01~S05. . . step

Fig. 1 is a schematic view showing the appearance of the present invention. Fig. 2 is a side view (1) of the present invention. Fig. 3 is a side view (2) of the present invention. [Fig. 4] is a schematic view showing the shifting seat of the present invention without moving out of the magazine. [Fig. 5] is a schematic view of the shifting block of the present invention. Fig. 6 is a schematic view showing the action of the push knife and the clamp knife of the present invention. [Fig. 7] Fig. 7 is a schematic view showing the action of the blade of the present invention. FIG. 8 is a schematic view of the rotary tool changing operation of the present invention. 9 is a flow chart of a tool changing method of the present invention.

S01~S05. . . step

Claims (7)

A tool changer system is provided on a machine tool having a spindle, the spindle device having a first tool, the tool change system comprising: a tool magazine having a plurality of knife sleeves thereon, each knife sleeve being accommodating a second tool; a tool change arm is disposed between the main shaft and the tool magazine, the tool change arm has a first clamping port and a second clamping port respectively for selectively clamping the first tool a cutter and the second cutter, wherein the cutter arm can generate a lifting and rotating motion relative to the machine tool for performing a tool change; and a knife shifting device is disposed between the tool magazine and the tool change arm, Used to remove a tool holder of the tool magazine for the tool change arm to clamp the second tool at a fixed point position, or after the two tool exchanges from the tool change arm, take the first tool and move it into the knife a transfer device disposed between the tool magazine and the tool change arm, the transfer device includes a pusher seat for clamping the cutter sleeve, and a pneumatic cylinder for driving the shift seat; the shift seat has a movable plate and a corresponding fixing plate, between the movable plate and the fixed plate A spring member for holding the pocket. The tool changing system of the machine tool according to claim 1, wherein the first clamping port and the second clamping port are respectively elastically pivoted with a clamping member, so that the clamping member is normally closed to the two clamping mouths. The tool change system of the machine tool of claim 1, wherein the spindle is capable of generating a lifting displacement relative to the machine tool. The tool change system of the machine tool according to claim 1, wherein the tool change arm is horizontally disposed on the machine tool. A tool changing method for a machine tool, which is used in a tool change system of the machine tool according to claim 1, which comprises the following steps: Pushing the knife, respectively, the first tool and the second tool are moved from the main shaft and the tool magazine toward the tool change arm to be placed at two ends of the tool change arm; and the tool changer is at a fixed point Positioning the first tool and the second tool; lifting the tool, the tool change arm is pulled up relative to the machine tool; rotating the tool change, the tool change arm is rotated relative to the machine tool, so that the first tool and the tool a second tool exchange position; a cutting tool, the tool change arm being reset relative to the machine tool to insert the first tool and the second tool into the exchanged position, respectively. The tool changing method of the machine tool according to claim 5, wherein the first tool is pushed into the tool magazine after the tool is inserted. The tool changing method of the machine tool according to claim 5, wherein after the inserting, the second tool is moved away from the tool change arm with the spindle displacement.