TWM560364U - Tool change arm of automatic tool change mechanism - Google Patents

Abstract

A tool changing arm of an automatic tool changing mechanism includes a rotating body, a top abutting member and a restricting member. Wherein, one side of the rotating body is provided with a buckle knife portion for fastening the cutter bar, and a limiting member is provided on the abutting member. When the limiting member moves with the abutting member and stops at a stopping portion on the rotating body, the jacking portion One of the abutting ends of the abutting members can contact the cutter bar located in the knife-cutting portion. For the miniaturized automatic tool changer, which requires a shorter tool changer, the authoring technique can also be used.

Description

Tool changing arm of automatic tool changing mechanism

This creation is related to the automatic tool changing mechanism; in particular, it refers to a tool changing arm used to fasten a tool bar for a tool changing process.

The tool-changing arm of the automatic tool-changing mechanism of the known machine tool is used to quickly exchange the tool holders of the tool magazine and the processing spindle with the tool bars that are respectively combined with the tool, thereby improving the work efficiency. Therefore, the tool-changing arm is used for the buckle The structure of the tool holder must be able to fasten or release the tool holder, and prevent the tool holder from loosening.

As shown in FIG. 1 and FIG. 2, the existing tool changing arm 1 is provided with a knife-receiving part 3 at each end of the rotating body 2, and the knife-receiving part 3 has a side opening 3 a for the knife rod 8 to enter and exit, and A concave snap-in inner edge 3 b cooperates with the cutter bar 8. The tool changing arm 1 is further provided with a long rod-shaped pusher 4 which can be inserted into the shaft hole 2a adjacent to the buckle section 3 of the rotating body 2. The pusher member 4 is pushed by the spring 5 and is maintained toward the buckle section 3 It can move in the direction of one direction and one end can contact the cutter bar 8 located in the buckle section 3, so as to stabilize and prevent the cutter bar 8 from coming loose. In order to prevent the abutting member 4 from detaching from the rotating body 2, a known method is to provide an elongated hole 4 a on the abutting member 4, and then pass a fixing pin 6 through the rotating body 2 and the elongated hole 4 a and fix the same. One end of the pin 6 is inserted into the circular hole 2 b of the rotating body 2, and the other end is blocked by a blocking piece 7 and fixed, so that the abutment piece 4 can only move within the range of the long axis of the elongated hole 4 a.

It is true that the above-mentioned tool changing arm 1 provides the functions of quick buckle, release, and preventing the tool bar 8 from coming loose, but the fixing pin 6 is passed through the body of the rotating body 2 to achieve a way to limit the moving distance of the abutment member 4, The rotating body 2 of the tool changing arm 1 must have a certain length so as to make room for locking the fixing pin 6. However, the total length of the rotating body 2 will be difficult to reduce, which is not conducive to miniaturization by this assembly and combination method. Used by automatic tool change mechanism. Similar assembly and connection structures such as China's patents for M517046 "silent tool changer structure of automatic tool change system", I289088 "tool clamping and loose tool structure of tool magazine tool change mechanism" and so on.

In view of this, the purpose of this creation is to provide a tool changing arm of an automatic tool changing mechanism, which is suitable for use in a miniaturized automatic tool changing mechanism.

In order to achieve the above object, the present invention provides a tool changing arm of an automatic tool changing mechanism, which includes a rotating body, a top abutting member and a restricting member. The rotating body has a rotation center and at least one buckle knife portion is located at one side of the rotation center. The buckle knife portion has a concave buckling inner edge to cooperate with the knife rod; the abutment member is movably coupled to the rotation. A main body, and the abutting member has an abutting end; in addition, the rotating body has at least one stopper; the restricting member is provided on the abutting member, and the restricting member moves with the abutting member and stops at the stopper At this time, the abutting end of the top abutment member can contact the cutter bar located in the knife cutter portion.

In addition, the present invention further provides a tool changing arm of an automatic tool changing mechanism, which includes a rotating body and a top abutment. Wherein, one side of the rotating body is provided with a buckle part for fastening the tool bar. The rotating body has a shaft hole; the abutment piece is movably inserted in the shaft hole, and the abutment piece has a head outside the shaft hole. And the head has an abutting end which can contact the cutter bar located in the buckle section; one of the rotating body and the head of the abutting member has a stopper and the other has a restriction When the restricting member contacts the stopper, the abutting member stops moving outward.

The effect of this creation is that by changing the combined position of the restricting parts, it is not only suitable for miniaturizing the tool changing arm, but also retains the function of abutting the parts.

In order to explain this creation more clearly, a preferred embodiment is described in detail below with reference to the drawings. Please refer to FIG. 3 to FIG. 5, a tool changing arm 100 of an automatic tool changing mechanism according to a preferred embodiment of the present invention includes a rotating body 10, two abutment members 20, two elastic members 30, and two restricting members. 40. The rotating body 10 is connected to a driving device through a rotating shaft (not shown) and is controlled to rotate. The driving device is a conventional technology and will not be described in detail. The rotating body 10 is the center of rotation of the rotating body 10, which is the center of the rotating body 10.

The rotating body 10 has a buckle section 12 on both sides of the rotation center, which are respectively used to fasten the tool bar of the tool magazine and the processing spindle for exchange. The buckle portion 12 has an opening 12 a on one side for the knife bar 200 to enter and exit (refer to FIG. 6), and a concave buckling inner edge 12 b cooperates with the knife bar 200. The rotating body 10 has a recessed space adjacent to each of the buckle portions 12. The space has a first side wall 10 a and a second side wall 10 b which intersect. One end of a shaft hole 14 penetrates the first side wall 10 a. A long slotted hole 16 is located on the second side wall 10b, and two opposite closed ends in the longitudinal direction of the long slotted hole 16 form a first stopper portion 16a and a second stopper portion 16b, respectively. In addition, a positioning key 18 is combined at each of the buckle knife portions 12, and the positioning key 18 protrudes to the inner edge 12 b of the buckle for positioning the knife bar 200.

The two abutment members 20 are movably coupled to the rotating body 10 and each have an abutment end 20 a that can contact the cutter bar 200 located in the buckle portion 12 to prevent the cutter bar 200 from coming loose. In this embodiment, each of the abutment members 20 includes a shaft 22 and a head 24 connected to one end of the shaft 22, and the outer edge of the head 24 constitutes the abutment end 20a; the shaft 22 is opposite to the head The other end of 24 is inserted into the shaft hole 14, and the head 24 is exposed outside the shaft hole 14. In addition, a sliding tube 50 may be provided in each shaft hole 14 in advance. The sliding tube 50 has a ring groove 52 at least, and at least one positioning member 19 penetrates into the rotating body 10 and partially falls in the ring groove 52 to make the sliding tube 50 50 does not slide out relative to the rotating body 10, the shaft 22 of the abutment member 20 is inserted into the sliding tube 50, and the movement of the abutment member 20 is made smoother by reducing the frictional resistance, and the sliding tube 50 It has the effect of stabilizing the movement of the abutment member 20.

The elastic force of the two elastic members 30 is used to push the abutting member 20 to keep the abutting member 20 moving outward. The elastic members 30 in this embodiment are springs and are respectively accommodated in one shaft hole 14. One end of the spring is against the bottom surface of the shaft hole 14, and the other end is against the body of the shaft 22 of the abutment member 20. In the example, the shaft 22 is a round rod body having two sections with different circular diameters, and one end of the spring is a stepped portion 22a formed by abutting on the change of the circular diameter.

The two restricting members 40 are respectively disposed on a corresponding abutting member 20 and are displaced as the abutting member 20 moves. One end of the restricting member 40 extends into the long slotted hole 16 of the rotating body 10, so when one end of the restricting member 40 abuts one of the closed ends of the long slotted hole 16, the first stopper 16 a or the When the second stopper 16b is stopped, the abutment member 20 will stop moving. In this embodiment, the restricting member 40 is detachably coupled to the head 24 of the abutment member 20. In a specific example, the head 24 has a through screw hole 24 a, and the restricting member 40 is A bolt is locked into the screw hole 24 a, and one end of the bolt that penetrates the screw hole 24 a can extend into the long slot hole 16.

In the state shown in FIG. 6, it is shown that the cutter bar 200 is located in the buckle portion 12. At this time, the abutment member 20 is pushed by the elastic member 30 to maintain outward movement, but one end of the restricted member 40 abuts against the first stop. The portion 16 a stops at this moment. At this moment, the abutment end 20 a on the head 24 of the abutment member 20 contacts the cutter bar 200, so that the cutter bar 200 is stably confined between the buckle portion 12 and the abutment member 20.

The state shown in FIG. 7 may indicate that the shank 200 is leaving the knives 12 or the shank 200 is entering the knives 12. At this time, the cutter bar 200 is in contact with the head 24 of the abutment member 20, and when the cutter bar 200 enters or leaves the buckle portion 12, the abutment member 20 is pushed back into the shaft hole 14 and passes through the elastic member 30. Appropriate compression deformation prevents the cutter bar 200 from entering or exiting the buckle section 12 without too much hindrance. Moreover, when the cutter bar 200 has entered or left the buckle section 12, the elastic member 30 releases the compression energy to make it press against the member. 20 returns to the state shown in FIG. 6.

In the above, because the restricting member 40 is provided on the head 24 of the abutment member 20, and one end of the restricting member 40 extends into the long slot 16 provided on the rotating body 10, so that the moving range of the abutting member 20 can be restricted. The purpose of the foregoing structural relationship is to improve the existing tool changer arm ’s difficulty of reducing the total length of the rotating body caused by the assembly method of fixing the pin through the rotating body to limit the moving range of the abutment member. In other words, this creative technique is widely applicable For various types of tool changer arms, this creative technique can also be used without contradiction for a small-sized tool changer arm that requires a short total length of the automatic tool changer mechanism.

Although the second stopper portion 16b of the above-mentioned long slot hole 16 provides a bottom limit for the abutment member 20 to retreat, it is not limited to having the second stopper portion 16b in practice. In addition, the design of the restricting member 40 coupled to the head 24 of the abutment member 20 in a detachable manner has the effect of easy disassembly and assembly, and under the premise that the assembly can be smoothly assembled, the restricting member can be the head of the abutment member. Made in one piece. In addition, although the restricting member of the above embodiment is combined with the abutment member, and the stopper is formed in a long slot of the rotating body, but the restricting member can be provided on the rotation under the premise of no interference during operation. The main body and the stopper can be changed to the top abutment.

The above description is only the preferred and feasible embodiment of this creation. For example, the equivalent changes of applying the description of this creation and the scope of patent application should be included in the scope of patent of this creation.

[This creation]
100‧‧‧tool change arm
10‧‧‧ rotating body
10a‧‧‧first side wall
10b‧‧‧Second sidewall
12‧‧‧Knife Department
12a‧‧‧side opening
12b‧‧‧Inner edge
14‧‧‧shaft hole
16‧‧‧ long slot
16a‧‧‧First stop
16b‧‧‧Second stopper
18‧‧‧ positioning key
19‧‧‧ Positioning piece
20‧‧‧ Top arrival
20a‧‧‧butt
22‧‧‧ shaft
22a‧‧‧stage
24‧‧‧ Head
24a‧‧‧Screw hole
30‧‧‧Elastic piece
40‧‧‧Restrictions
50‧‧‧ sliding tube
52‧‧‧ ring groove
200‧‧‧tool bar

Figure 1 is an exploded perspective view of some components of a known tool change arm; Figure 2 is a partial cross-sectional view of the known tool change arm; Figure 3 is a perspective view of a tool change arm of an automatic tool change mechanism of a preferred embodiment of the invention Figure 4 is a side view of Figure 3; Figure 5 is an exploded perspective view of some components of the tool changing arm of the above-mentioned preferred embodiment of the creation; Figure 6 is a cross-sectional view in the direction of 6-6 of Figure 3, revealing that the tool bar is located in the buckle section ; And FIG. 7 is the same as FIG. 6, revealing that the tool bar is away from the buckle portion.

Claims (10)

A tool-changing arm of an automatic tool-changing mechanism for fastening a tool bar includes: a rotating body having a center of rotation and at least one button-holding portion on one side of the center of rotation, wherein the button-holding portion has a recess The inner edge of the inserted buckle cooperates with the cutter bar; at least one top abutment is movably coupled to the rotating body, and the abutting piece has an abutting end; and the feature is that the rotating body has at least one stop A restricting member is provided on the abutting member, and when the restricting member moves with the abutting member and stops at the stopper portion, the abutting end of the abutting member can contact a knife located in the buckle portion. Pole. The tool changing arm of the automatic tool changing mechanism as described in claim 1, wherein the knife part of the rotating body has an opening on one side for the tool rod to enter and exit, and the rotating body has a shaft hole; the abutment member includes a shaft One end of the shaft is inserted into the shaft hole, and the other end is located outside the shaft hole and connected to a head. The head has the abutting end and is provided with the restricting member. The tool changing arm of the automatic tool changing mechanism according to claim 1 or 2, wherein the rotating body has a long slotted hole adjacent to the tool holding portion, and the at least one stopping portion includes a first stopping portion and a second stopping portion. The moving portion, wherein the first stopping portion and the second stopping portion are two relatively closed ends formed in the longitudinal direction of the long slot hole, respectively; one end of the restricting member extends into the long slot hole. The tool changing arm of the automatic tool changing mechanism according to claim 3, wherein the restricting member is detachably coupled to the head of the pressing member. The tool changing arm of the automatic tool changing mechanism as described in claim 4, wherein the head of the abutment member has a screw hole, the restricting member is a bolt and is locked into the screw hole, and one end of the bolt penetrates the screw Hole and extends into the long slot hole. The tool changing arm of the automatic tool changing mechanism according to claim 3, includes an elastic member, and the elastic force of the elastic member pushes the pressing member to keep the pressing member moving outward. A tool-changing arm of an automatic tool-changing mechanism includes: a rotating body, which is provided at one side with a knife-clamping portion for fastening a knife rod, the rotating body has a shaft hole; a top abutment is movably worn Set in the shaft hole, the top abutment member has a head located outside the shaft hole, and the head has a contact end that can contact a cutter bar located in the buckle section; wherein the rotating body and the top One of the heads of the abutting member has a stopper and the other has a restricting member. When the restricting member contacts the stopper, the top abutment member stops moving outward. The tool changing arm of the automatic tool changing mechanism as described in claim 7, wherein the rotating body has a long slotted hole adjacent to the buckle portion, and a closed end in the longitudinal direction of the long slotted hole forms the stopper portion; the restriction The member is disposed on the head and has one end protruding into the long slot hole. The tool changing arm of the automatic tool changing mechanism according to claim 8, wherein the restricting member is detachably coupled to the head of the pressing member. The tool changing arm of the automatic tool changing mechanism according to claim 9, wherein the head of the abutment member has a screw hole, the limiting member is a bolt and is locked in the screw hole, and one end of the bolt penetrates the screw Hole and extends into the long slot hole.