A tool changing arm and a tool changing mechanism

Abstract

The utility model discloses a kind of tool changing arms, including tool changing arm main body, at least one tool changing claw, at least one lock tool rod and at least one pusher assembly, lock tool rod is movably arranged in tool changing arm main body along first direction and with tool changing claw constitute a clamping space of clamping tool, pusher assembly is movably arranged in tool changing arm main body, pusher assembly includes the moving block of being detachably connected with lock tool rod, the pusher of being movably arranged in tool changing arm main body along second direction and push moving block along first direction moves, the first elastic member of making pusher reset and the second elastic member of making moving block reset, pusher has the pusher portion of inclined arrangement, when moving block and low position contact of pusher portion, tool changing arm is in locked state, when moving block and high position contact of pusher portion, tool changing arm is in unlocked state, the state of tool changing arm is switched by actuating pusher, wherein, second direction is perpendicular to first direction. The tool changing arm of the utility model is simple structure, and it is convenient to assemble and disassemble.

Description

Technical Field

[0001] This utility model relates to the technical field of automatic tool changing devices, specifically to a tool changing arm and a tool changing mechanism. Background Technology

[0002] The automatic tool changer of a machine tool is used to quickly exchange tool holders located in the tool magazine and the machining spindle to improve work efficiency. Therefore, the part of the tool changer used to engage the tool holder must have the function of quickly engaging or releasing the tool holder, and prevent the tool holder from coming loose when engaged.

[0003] Chinese utility model patent with publication number CN208231376U discloses a tool changing arm of a tool changing device for a machining machine, which includes two arms, a tool-stopping bar, a longitudinal displacement block, and a transverse displacement block. The longitudinal displacement block and the transverse displacement block are embedded together so that the longitudinal displacement block can move up and down in the transverse displacement block. There are multiple abutting surfaces between the longitudinal displacement block and the transverse displacement block. Each abutting surface is in parallel inclined contact with each other. The vertical displacement of each longitudinal displacement block causes each transverse displacement block to move closer to or away from the joint by the traction of the multiple abutting surfaces, so that the other end of each tool-stopping bar can reliably enter the set position inside the joint or reliably leave the inside of the joint.

[0004] Admittedly, this tool changing arm, through the cooperation of the longitudinal and transverse displacement blocks, can move the locking rod to achieve the purpose of tool release and locking. However, the longitudinal and transverse displacement blocks have complex structures, require many assembly and disassembly steps, and have high manufacturing costs. In addition, the two arms are respectively provided with through holes, channels, a first chamber, a second chamber, and perforations, making the machining process complex. Utility Model Content

[0005] To solve at least one technical problem of the prior art, this utility model provides a tool changer arm.

[0006] To achieve the aforementioned objectives, the present invention employs the following technical solution: a tool changing arm, comprising a tool arm body, at least one tool changing claw, at least one tool locking rod, and at least one pushing assembly. The tool locking rod is movably disposed within the tool arm body along a first direction and forms a tool-clamping space with the tool changing claw. The pushing assembly is movably disposed within the tool arm body.

[0007] The pushing assembly includes a movable block detachably connected to the locking lever, a pushing member movably disposed in the cutter arm body along a second direction and pushing the movable block to move along the first direction, a first elastic member for resetting the pushing member, and a second elastic member for resetting the movable block. The pushing member has an inclined pushing portion. When the movable block contacts the lower position of the pushing portion, the cutter arm is in a locked state. When the movable block contacts the upper position of the pushing portion, the cutter arm is in an unlocked state. The state of the cutter arm is switched by actuating the pushing member, wherein the second direction is perpendicular to the first direction.

[0008] In some embodiments, the movable block is provided with a reset groove for receiving the second elastic element;

[0009] The tool changing arm also includes a stop block disposed in the reset groove. The stop block is fixed in the tool arm body and contacts the second elastic member.

[0010] In some embodiments, the cutter arm body is provided with a receiving groove extending along the length direction of the cutter arm body and a moving hole communicating with the receiving groove, the pushing component is movably disposed in the receiving groove, and the locking rod is movably disposed in the moving hole.

[0011] In some embodiments, the stop is a protrusion fixed to the bottom wall of the receiving groove and protruding from the bottom wall.

[0012] In some embodiments, the tool changer arm further includes a cover plate that locks the push assembly within the tool arm body;

[0013] The stop block is a metal block with threaded holes, and the stop block is fixed to the inside of the cover plate by bolts passing through the cover plate.

[0014] In some embodiments, the pusher includes a push block and a pressing pin fixed on the top surface of the push block, the push portion being an inclined groove formed in the push block along a second direction, one end of the moving block being movably disposed in the inclined groove, and the other end of the moving block being connected to the locking lever.

[0015] In some embodiments, the push block has limit grooves formed on the two side walls opposite to the inclined groove;

[0016] Limiting protrusions are provided on both sides of the end face of the moving block that contacts the pushing block, and the limiting protrusions are slidably arranged in the limiting groove.

[0017] In some embodiments, the cover plate is provided with a through hole, through which the pressing pin extends to the outside of the blade arm body.

[0018] In some embodiments, the cutter arm body is provided with a shaft connection hole, and the cutter changing arm is mounted on the output shaft through the shaft connection hole.

[0019] A tool changing mechanism, including the tool changing arm described above.

[0020] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0021] This invention only has a moving hole and a receiving groove on the main body of the cutter arm, which has a simple structure and fewer processing steps, reducing the processing difficulty of changing the cutter arm. At the same time, the pushing component of this invention has a simple structure, fewer assembly and disassembly steps, and low manufacturing cost. Attached Figure Description

[0022] Fig. 1 This is an exploded view of the components of the tool changing arm of this utility model;

[0023] Fig. 2 This is a perspective view of the pushing component of this utility model;

[0024] Fig. 3 This is a perspective view of the movable block of this utility model. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing the present invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0028] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0029] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] Reference Figs. 1 to 3 The present invention provides a tool changing arm, including a tool changing arm body 1, at least one tool changing claw 2, at least one tool locking rod 3 and at least one pushing component. The tool locking rod 3 is movably disposed in the tool changing arm body 1 along a first direction D1 and forms a tool clamping space 20 with the tool changing claw 2. The pushing component is movably disposed in the tool changing arm body 1.

[0032] In some embodiments, the pushing assembly includes a movable block 42 detachably connected to the locking lever 3, a pushing member 41 movably disposed in the cutter arm body 1 along the second direction D2 and pushing the movable block 42 to move along the first direction D1, a first elastic member 43 for resetting the pushing member 41, and a second elastic member 44 for resetting the movable block 42. The pushing member 41 has an inclined pushing portion 4121. When the movable block 42 contacts the lower position of the pushing portion 4121, the cutter arm is in a locked state. When the movable block 42 contacts the upper position of the pushing portion 4121, the cutter arm is in an unlocked state. The state of the cutter arm is switched by actuating the pushing member 41. The first direction D1 is the length direction of the cutter arm body 1, and the second direction D2 is perpendicular to the first direction D1.

[0033] In some embodiments, the main body 1 of the cutter arm is generally a rectangular plate with a certain thickness. The main body 1 of the cutter arm has at least one movable hole 12 extending along the first direction D1. The movable hole 11 communicates with the clamping space 20. The locking bar 3 passes through the movable hole 12 and can move along the first direction D1 through the movable hole 11.

[0034] In some embodiments, the cutter arm body 1 is further provided with at least one receiving groove 11 communicating with the moving hole 12 along the thickness direction. The pusher 41 is disposed in the receiving groove 11, and by actuating the pusher 41, the pusher 41 can move in the receiving groove 11 along the second direction D2. The first elastic member 43 is disposed at the bottom of the pusher 41. When the pusher 41 is pressed and moves along the second direction D2, the first elastic member 43 is compressed. At this time, the high position of the pusher 41 contacts the moving block 42, and the cutter arm is in the unlocked state. When the pressing force applied to the pusher 41 is removed, the pusher 41 is reset under the action of the first elastic member 43. At this time, the low position of the pusher 41 contacts the moving block 42, and the cutter arm is in the locked state.

[0035] In some embodiments, the movable block 42 is disposed in the receiving groove 11 and is movable in the receiving groove 11 along a first direction D1 under the action of the pushing member 41. The movable block 42 is provided with a reset groove 422 for accommodating the second elastic member 44, which is disposed in the reset groove 422. The tool changing arm also includes a stop 5 disposed in the reset groove 422, which is fixed in the tool arm body 1 and contacts the second elastic member 44. After the pushing member 41 is pressed, the second elastic member 44 is compressed, and after the pressing force on the pushing member 41 is removed, the elastic restoring force of the second elastic member 44 forces the movable block 42 to reset.

[0036] Preferably, the first elastic element 43 and the second elastic element 44 are springs.

[0037] In a preferred embodiment, the stop block 5 is a protrusion fixed to the bottom wall of the receiving groove 11 and protruding from the bottom wall.

[0038] In some embodiments, the tool changer also includes a cover plate 6 that encloses the push assembly within the tool arm body 1. The cover plate 6 is bolted to the tool arm body 1 and seals the receiving groove 11. The stop block 5 is a metal block with threaded holes, and the stop block 5 is fixed to the inside of the cover plate 6 by bolts 7 passing through the cover plate 6.

[0039] In some embodiments, the pushing member 41 includes a pushing block 412 and a pressing pin 411 fixed to the top surface of the pushing block 412. The pushing part 4121 is an inclined groove opened in the pushing block 412 along the second direction D2. One end of the moving block 42 is movably disposed in the inclined groove, and the other end of the moving block 42 is connected to the locking rod 3. The cover plate 6 is provided with a through hole, and the pressing pin 411 extends through the through hole to the outside of the blade arm body 1.

[0040] In some embodiments, the push block 412 has limit grooves 4122 on the two side walls opposite to the inclined groove; the moving block 42 has limit protrusions 421 on both sides of the end face that contacts the push block 412, and the limit protrusions 421 are slidably arranged in the limit grooves 4122.

[0041] In some embodiments, the cutter arm body 1 is provided with a shaft connection hole 10, and the cutter arm is mounted on the output shaft through the shaft connection hole 10.

[0042] This utility model only provides a moving hole 12 and a receiving groove 11 on the main body 1 of the cutter arm. The structure is simple and the processing steps are few, which reduces the processing difficulty of changing the cutter arm. At the same time, the pushing component of this utility model has a simple structure, fewer assembly and disassembly steps, and low manufacturing cost.

[0043] This utility model also provides a tool changing mechanism, including the aforementioned tool changing arm.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to the above embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tool changing arm, comprising a tool arm body (1), at least one tool changing claw (2), at least one tool locking rod (3), and at least one pushing assembly, characterized in that, The locking lever (3) is movably disposed within the cutter arm body (1) along the first direction (D1) and forms a clamping space (20) for clamping the cutter with the tool changing claw (2). The pushing assembly is movably disposed within the cutter arm body (1). The pushing assembly includes a movable block (42) detachably connected to the locking lever (3), a pushing member (41) movably disposed in the cutter arm body (1) along a second direction (D2) and pushing the movable block (42) to move along the first direction (D1), a first elastic member (43) for resetting the pushing member (41), and a second elastic member (44) for resetting the movable block (42). The pushing member (41) has an inclined pushing part (4121). When the movable block (42) is in low contact with the pushing part (4121), the cutter arm is in a locked state. When the movable block (42) is in high contact with the pushing part (4121), the cutter arm is in an unlocked state. The state of the cutter arm is switched by actuating the pushing member (41). The second direction (D2) is perpendicular to the first direction (D1).

2. The tool changer arm as described in claim 1, characterized in that, The movable block (42) is provided with a reset groove (422) for accommodating the second elastic member (44). The tool changing arm also includes a stop (5) disposed in the reset groove (422), the stop (5) being fixed in the tool arm body (1), and the stop (5) contacting the second elastic member (44).

3. The tool changer arm as described in claim 2, characterized in that, The blade arm body (1) is provided with a receiving groove (11) extending along the length direction of the blade arm body (1) and a moving hole (12) communicating with the receiving groove (11). The pushing component is movably disposed in the receiving groove (11), and the locking bar (3) is movably disposed in the moving hole (12).

4. The tool changer arm as described in claim 3, characterized in that, The stop block (5) is a protrusion fixed on the bottom wall of the receiving groove (11) and protruding from the bottom wall.

5. The tool changer arm as described in claim 2, characterized in that, The tool changer also includes a cover plate (6) that locks the push assembly in the tool arm body (1). The stop block (5) is a metal block with a threaded hole, and the stop block (5) is fixed to the inside of the cover plate (6) by bolts (7) passing through the cover plate (6).

6. The tool changer arm as described in claim 5, characterized in that, The pusher (41) includes a push block (412) and a pressing pin (411) fixed on the top surface of the push block (412). The push part (4121) is an inclined groove opened by the push block (412) along the second direction (D2). One end of the moving block (42) is movably disposed in the inclined groove, and the other end of the moving block (42) is connected to the locking bar (3).

7. The tool changer arm as described in claim 6, characterized in that, The push block (412) has limit grooves (4122) on the two side walls opposite to the inclined groove. Limiting protrusions (421) are provided on both sides of the end face of the moving block (42) that contacts the pushing block (412), and the limiting protrusions (421) are slidably arranged in the limiting groove (4122).

8. The tool changer arm as described in claim 6, characterized in that, The cover plate (6) is provided with a through hole, and the pressing pin (411) extends through the through hole to the outside of the blade arm body (1).

9. The tool changer arm as described in claim 1, characterized in that, The cutter arm body (1) is provided with a shaft connection hole (10), and the cutter arm is installed on the output shaft through the shaft connection hole (10).

10. A tool changing mechanism, characterized in that, Includes the tool changer arm as described in any one of claims 1 to 9.

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