TWM526459U - Tool change mechanism with safety locking device - Google Patents

Description

Tool change mechanism with safety locking device

The present invention relates to a tool change mechanism, and more particularly to a tool change mechanism with a safety lock device, which can be applied to a tool change operation of a turret type milling machine.

According to the traditional turret milling machine, the main shaft can be lifted and lowered relative to the machine head in order to reduce the machining and cutting.

However, most of the tools used in turret milling machines are NT tools, and NT tools cannot be applied to the jaw clamping of the automatic tool change system because they do not have the ring clamping groove of the BT tool, so the automatic tool change on the CNC machine The system cannot be applied to a turret type milling machine. If the automatic tool change system is applied to a turret type milling machine, there will be doubts about accidental slippage when the entire spindle is subjected to a tool change operation in the tool cylinder.

To this end, the present invention aims to solve the aforementioned problems, and mainly provides a tool change mechanism with a safety locking device.

In order to solve the above problems, the present invention discloses a tool change mechanism with a safety locking device, which pre-locks the spindle during the knife operation, thereby avoiding accidental sliding of the spindle when the knife stroke is performed.

In order to achieve the above object, the present invention provides a tool changing mechanism with a safety locking device, which comprises: a body; a spindle, which is arranged in the body of the lifting and lowering, a pull rod is arranged axially in the spindle; The utility model is disposed on the seat body to drive the linear displacement of the pull rod; and a safety locking device is disposed between the seat body and the main shaft for pre-locking the main shaft when the knife unit is actuated to prevent the spindle from being displaced. This avoids accidental slippage of the spindle during the stroke of the tool.

Further, the safety locking device comprises a pushing member and a clamping member, the pushing member is connected to the knife unit, and the clamping member is disposed on the outer circumference of the spindle. When the knife unit is actuated, the pushing member is pushed Press the clamp to hold the clamping spindle.

Further, a peripheral portion of the outer circumference of the main shaft is provided with a first clamping portion, and the clamping member is provided with a second clamping portion and the first clamping portion is configured to be concave-convex.

Further, the first clamping portion is a groove, and the second clamping portion is a convex block.

Further, the clamping member is provided with a fixing portion different from the direction of the second clamping portion, and the fixing portion extends toward the main shaft displacement direction and is fixed to the base body.

Further, the clamping member is provided with a fixing portion different from the direction of the second clamping portion, and the fixing portion extends in a direction opposite to the displacement direction of the main shaft and is fixed to the seat body.

Further, the pushing member has a penetrating portion for the fixing portion to pass through and is fixed to the seat body.

Further, the pushing member and the clamping member are pushed against each other by a slope.

Further, the knife unit has a dozen cutter shafts, and the pusher members are fixed to the ends of the cutter shafts.

Further, the knife unit has a cylinder body having a piston, and the cutter shaft is coupled to the piston.

Therefore, in the process of the knife cutting, before the knife shaft contacts the rod, the safety locking device is actuated first, so that the spindle is locked and locked by pushing the pressing member and the clamping member, thereby ensuring that the spindle does not accident. Swipe.

For the convenience of the description, the central idea expressed in the above-mentioned creation content column is expressed by a specific embodiment. The various items in the embodiments are set forth in proportion to the description and not in the

Please refer to FIG. 1 to FIG. 3 , which is a first embodiment of the present invention. The tool change mechanism with the safety locking device is applied to a turret milling machine for performing a tool change operation. The tool change mechanism having the safety locking device includes a body 10, a spindle 20, a cutter unit 30 and a safety locking device 40.

The base 10 is mounted on a turret type milling machine, and the base 10 has an inner space 11.

The main shaft 20 is disposed in the base body 10 in an up-and-down manner, and a pull rod 21 is axially disposed in the main shaft 20. The one end of the pull rod 21 has a contact end 211 facing the inner space 11 and the other end is connected with a jaw (not shown). The jaws are used to clamp or loosen the tool.

The knife unit 30 is disposed on the seat body 10 and is located on the opposite side of the inner space 11 for driving the rod 21 to linearly displace. The cutter unit 30 has a cylinder block 31. The cylinder block 31 has a piston 32 that can be driven by a pressure source, and the piston 32 is connected with a cutter shaft 33. When the cutter unit 30 is actuated, the cutter shaft 33 is extended. The inner space 11 is inserted to perform a knife punching action on the tie rod 21.

The safety locking device 40 is disposed between the base 10 and the main shaft 20 for locking the main shaft 20 when the knife unit 30 is actuated, so as to prevent the spindle 20 from being displaced. In the present invention, the safety locking device 40 includes a pushing member 41 and a clamping member 42. The pushing member 41 is fixed to the end of the cutter shaft 33 of the knife unit 30, and is matched with the cutter shaft. 33 moves to the inner space 11 of the seat body 10, and the clamping member 42 is disposed on the outer periphery of the end portion of the main shaft 20 at the inner space 11, and a slope 43 is formed between the pushing member 41 and the clamping member 42. Push against each other. When the knife unit 30 is actuated, the pushing member 41 can push the clamping member 42 during the movement so as to buckle the locking spindle 20 to generate displacement.

Further, a first clamping portion 22 is disposed around the outer circumference of the main shaft 20, and the first clamping portion 22 is coupled to the end portion of the main shaft 20 in a locking manner, and the clamping member 42 is disposed corresponding to the first clamping portion 22. There is a second clamping portion 421, and the second clamping portion 421 is matched with the first clamping portion 22, and in the present creation, the first clamping portion 22 is a groove, and the second clamping portion 421 is a convex block. .

Further, in the embodiment, the fixing member 422 is disposed in a direction different from the direction of the second clamping portion 421, and the fixing portion 422 extends in the direction of displacement of the main shaft 20 and is fixed to the base 10.

As shown in FIGS. 2 and 3, when the knife operation is performed, the knife unit 30 is actuated to cause the cutter shaft 33 to move the pusher 41 in the moving direction of the spindle 20, and move through the pusher 41 by the slope. 43, the clamping member 42 is pushed to force the clamping member 42 to push against the outer periphery of the main shaft 20, and then the second clamping portion 421 and the first clamping portion 22 are coupled to each other to reach the buckle. For the purpose of holding and clamping the spindle 20, at this time, the cutter shaft 33 continues to be pressed down, and finally can be pressed against the contact end 211 of the tie rod 21, so that the pull rod 21 is linearly displaced, and the knife change operation is performed. In this way, before the cutter shaft 33 contacts the rod 21, the pushing member 41 and the clamping member 42 of the safety locking device 40 are actuated first, so that the spindle 20 is locked and locked in advance, thereby ensuring that the cutter shaft 33 contacts the rod 21 After the knife stroke, the spindle 20 will not accidentally slide.

As shown in Figures 4, 5 and 6, it is the second embodiment of the creation. The difference in the first embodiment is that the pusher 41 has a through portion 411 which is in the shape of a hole. The fixing portion 422 of the clamping member 42 extends in a direction opposite to the displacement of the main shaft 20 and is fixed to the inner space 11 of the base 10 through the through portion 411 and is adjacent to the knife unit 30.

In the present embodiment, in the tool change operation, before the cutter shaft 33 contacts the pull rod 21, the pushing member 41 and the clamping member 42 of the safety locking device 40 act first to lock the spindle 20 to avoid the knife. When the motion is in progress, the spindle 20 is accidentally slipped.

In summary, the tool changing mechanism of the present invention has a safety locking device in the process of the knife. Before the blade 33 is in contact with the rod 21, the safety locking device 40 is actuated first, that is, the pushing member 41 follows the tool shaft. 33 acts to push the clamping member 42 to cause the clamping member 42 to be snapped to the spindle 20, so that the spindle 20 is previously locked and locked, ensuring that the spindle 20 does not accidentally slide in order to perform subsequent tool changing operations.

Although the present invention has been described in terms of a preferred embodiment, it is obvious to those skilled in the art that various changes can be made without departing from the spirit and scope of the invention. The above embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Any modification or change that is not in violation of the spirit of this creation is the scope of patent application for this creation.

10‧‧‧ body
20‧‧‧ Spindle
211‧‧‧Contact end
30‧‧‧Cutter unit
32‧‧‧Piston
40‧‧‧Safety locking device
411‧‧‧ Department of Wear
421‧‧‧Second gripping section
43‧‧‧Bevel
11‧‧‧Internal space
21‧‧‧ lever
22‧‧‧First clamping section
31‧‧‧Cylinder
33‧‧‧Cutter shaft
41‧‧‧Pushing parts
42‧‧‧Clamping parts
422‧‧‧Fixed Department

[Fig. 1] is a schematic view showing the structure of the first embodiment of the present invention, showing that the cutter shaft is in an initial state. 2 is a schematic view showing the structure of the locking main shaft of the safety locking device of the first embodiment. [Fig. 3] is a schematic view showing the state in which the cutter shaft of the first embodiment causes the rod to be displaced. [Fig. 4] is a schematic view showing the structure of the second embodiment of the present invention, showing that the cutter shaft is in an initial state. [Fig. 5] is a schematic view showing the structure of the locking main shaft of the safety locking device of the second embodiment. Fig. 6 is a schematic view showing the state in which the cutter shaft of the second embodiment causes the rod to be displaced.

10‧‧‧ body

11‧‧‧Internal space

20‧‧‧ Spindle

21‧‧‧ lever

211‧‧‧Contact end

22‧‧‧First clamping section

30‧‧‧Cutter unit

31‧‧‧Cylinder

32‧‧‧Piston

33‧‧‧Cutter shaft

40‧‧‧Safety locking device

41‧‧‧Pushing parts

42‧‧‧Clamping parts

421‧‧‧Second gripping section

422‧‧‧Fixed Department

43‧‧‧Bevel

Claims (10)

A tool changing mechanism with a safety locking device, comprising: a body; a spindle, which is disposed in the body of the lifting and lowering, wherein a shaft is axially disposed; a cutter unit is disposed on the seat body, The driving rod is driven to generate a linear displacement; and a safety locking device is disposed between the seat body and the main shaft for pre-locking the main shaft to prevent displacement of the main shaft when the working unit is actuated. The tool changing mechanism of the safety locking device according to claim 1, wherein the safety locking device comprises a pushing member and a clamping member, the pushing member is coupled to the cutting unit, the clamping The piece is disposed on a periphery of the main shaft, and when the knife unit is actuated, the pushing member pushes the clamping member to buckle the spindle. The tool change mechanism of claim 2, wherein the outer circumference of the main shaft is provided with a first clamping portion, and the clamping member is provided with a second clamping portion and the first clamping portion. The department is set for bump matching. The tool changing mechanism of claim 3, wherein the first clamping portion is a groove and the second clamping portion is a convex block. The tool change mechanism of claim 3, wherein the clamping member is provided with a fixing portion different from the direction of the second clamping portion, and the fixing portion extends toward the spindle displacement direction and is fixed on the spindle The seat. The tool changing mechanism of claim 3, wherein the clamping member is provided with a fixing portion different from the direction of the second clamping portion, and the fixing portion extends and is fixed in a direction opposite to the displacement of the main shaft. Located in the body. The tool changing mechanism of the safety locking device according to claim 6, wherein the pushing member has a penetrating portion for the fixing portion to pass through and fix to the seat body. The knife changing mechanism of the safety locking device according to any one of claims 2 to 6, wherein the pushing member and the clamping member are pushed against each other by a slope. The tool changing mechanism of claim 2, wherein the tooling unit has a cutter shaft, and the pusher is fixed to an end of the cutter shaft. The tool changing mechanism of claim 9, wherein the knife unit has a cylinder having a piston, and the cutter shaft is coupled to the piston.