Tool magazine structure facilitating quick tool changing

Abstract

The tool magazine structure comprises a cutter head and a plurality of jigs arranged on the cutter head, the cutter head is obliquely arranged on the radial side of a main shaft, the larger end of the cutter head faces the main shaft, the lower end of the cutter head can extend to the axial lower portion of the main shaft, a rotating shaft is arranged in the center of the cutter head, the end of the rotating shaft is slidably connected with a pulling plate, one end of the pulling plate is hinged to a rack, and the other end of the pulling plate is hinged to a rotating shaft. And the plurality of jigs are uniformly arrayed on the outline edge of the cutter head along the circumferential direction. The cutter head can be pushed to rotate relative to the machine frame in the vertical moving process of the main shaft, a jig at the lowermost end of the cutter head is conveyed to the position below the main shaft, automatic cutter installing and replacing actions can be directly carried out on a tool magazine in cooperation with the action of a clamping piece in the main shaft, the structure is simple, layout is compact, the cutter replacing efficiency is high, and cost is low. And the overall occupied space of the mechanism is small.

Description

Technical Field

[0001] The utility model relates to the technical field of tool changing of machining centers, in particular to a tool magazine structure facilitating rapid tool changing. Background Art

[0002] Most machining centers are equipped with a tool magazine, which stores the tools required in machining. During tool changing, the tool changing mechanism clamps the tools on the spindle and the tool magazine for replacement. The tool changing mechanism is mostly arranged between the spindle and the tool magazine, and some also need to cooperate with the tool setting mechanism, which not only occupies space, resulting in a relatively large floor area of the machining center, but also takes a relatively long time in its operation process and has low efficiency. Content of the Utility Model

[0003] Aiming at the problems existing in the above-mentioned prior art, the utility model provides a tool magazine structure facilitating rapid tool changing, which can push the tool disc to rotate relative to the machine frame during the up-and-down movement of the spindle and send the fixture at the lowermost end of the tool disc directly below the spindle. Cooperating with the action of the clamping member in the spindle, automatic tool loading and tool changing actions can be realized directly on the tool magazine. The structure is relatively simple and the layout is compact, the tool changing efficiency is relatively high, and the overall mechanism occupies a relatively small space.

[0004] To solve the above technical problems, a technical solution adopted by the utility model is as follows:

[0005] A tool magazine structure facilitating rapid tool changing, which is arranged on a machine frame. The machine frame is provided with a tool magazine and a spindle capable of moving along the Z direction. The tool magazine includes a tool disc and a plurality of fixtures installed thereon for clamping tools, wherein:

[0006] The tool disc is a disc structure obliquely arranged beside the radial direction of the spindle, its larger end faces the spindle, and its lower end can extend to the axial lower part of the spindle. A rotating shaft in transmission connection therewith is arranged at the center of the tool disc. The rotating shaft is in transmission connection with a driving device and can drive the tool disc to rotate under its drive. A pull plate is rotatably connected to the end of the rotating shaft facing the spindle. One end of the pull plate is hinged to the machine frame. The pull plate can deflect relative to the machine frame under the action of an external force to pull the rotating shaft and the tool disc to deflect relative to the spindle, so as to send one of the fixtures at the lowermost end of the tool disc to the lowermost end of the spindle.

[0007] The plurality of fixtures are evenly arranged in a circumferential array on the contour edge of the tool disc, one end of each of them extends towards the rotating shaft, and the other end of each of them extends obliquely towards the outside of the tool disc.

[0008] As a further elaboration of the above technical solution:

[0009] In the above technical solution, an elastic pull rod is further arranged at the other end of the pull plate, and the other end of the elastic pull rod is detachably fixed on the machine frame.

[0010] In the above technical solution, the elastic tension rod is a spring.

[0011] In the above technical solution, two guiding plates are further provided on the pull plate. The two guiding plates are arranged to cover the periphery of the larger end of the cutter head in a matching manner and are slidably connected thereto. One end portions of the two guiding plates respectively extend to the radial two sides of the main shaft and are arranged to abut against the side walls thereof in a matching manner. Avoidance spaces for avoiding the cutter head and the fixtures thereon are formed in the lower portions of the two guiding plates.

[0012] In the above technical solution, the cutter head includes a bottom plate and a plurality of fixture plates. The bottom plate is of an annular structure, is arranged to sleeved on the periphery of the rotating shaft in a matching manner and is in driving connection therewith. The outer contour edge thereof is uniformly provided with a plurality of the fixture plates extending radially outward. The end portion of each fixture plate is bent outward and extends to the side of the guiding plate. A fixture is vertically installed at the end portion of each fixture plate.

[0013] In the above technical solution, a guiding ring extending away from the main shaft is provided in the middle of the pull plate. A bearing is arranged in the guiding ring, and the rotating shaft is arranged in the bearing.

[0014] In the above technical solution, a mounting plate is hinged to one end portion of the pull plate. The mounting plate is detachably fixed to and integrally formed with the frame.

[0015] Compared with the prior art, the beneficial effect of the present utility model is that: by hinging the cutter head on the frame and obliquely arranging it on the radial side of the main shaft, and arranging a pull plate and guiding plates between the cutter head and the main shaft, and arranging an elastic tension rod between the cutter head and the frame, the cutter head can be pushed to rotate relative to the frame during the up and down movement of the main shaft, and the fixture at the lowermost end of the cutter head can be sent directly below the main shaft. Cooperating with the action of the clamping member in the main shaft, the automatic tool loading and tool changing actions can be realized directly on the tool magazine. The structure is relatively simple and the layout is compact. The tool changing efficiency is relatively high, and the overall space occupied by the mechanism is relatively small. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of this embodiment;

[0017] Figure 2 is a schematic structural diagram of this embodiment from another perspective;

[0018] Figure 3 is an assembly structural diagram of the pull plate, the guiding plate and the rotating shaft in this embodiment

[0019] Figure 4 is Figure 3 a schematic structural diagram of another perspective;

[0020] Figure 5 is a schematic structural diagram of the pull plate in this embodiment;

[0021] Figure 6 It is a schematic diagram of the internal structure of the cutter head in this embodiment.

[0022] In the figure: 10, mounting plate; 20, main shaft; 30, cutter head; 31, bottom plate; 32, jig plate; 40, jig; 50, rotating shaft; 60, pull plate; 61, guide ring; 62, slewing structure; 70, elastic pull rod; 80, guiding plate; 81, avoidance space; 82, connecting plate; 90, bearing; 100, frame. Specific embodiments

[0023] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] The embodiments described with reference to the accompanying drawings are exemplary and are intended to explain the present application, and should not be construed as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a number of" and "a plurality of" is two or more, unless otherwise specifically defined. In the present application, unless otherwise clearly defined and limited, the terms such as "mounted", "connected", "connected to", "fixed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is at a higher horizontal level than the second feature. The first feature being "under", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the first feature is at a lower horizontal level than the second feature.

[0025] As Figure 1-2 shown, a tool magazine structure for facilitating quick tool change is provided on a machine frame 100. A tool magazine and a main shaft 20 movable in the Z direction are provided on the machine frame 100. The tool magazine includes a tool disc 30 and a number of jigs 40 mounted thereon and used for clamping tools, where:

[0026] The cutter head 30 is a disc structure inclined and arranged beside the radial direction of the main shaft 20, with its larger end facing the main shaft 20 and its lower end extending below the axial direction of the main shaft 20. A rotating shaft 50 is arranged at the center of the cutter head 30 and is in transmission connection with it. The rotating shaft 50 is in transmission connection with the driving device and can drive the cutter head 30 to rotate under its drive. A pull plate 60 is rotatably connected to the end of the rotating shaft 50 facing the main shaft 20. One end of the pull plate 60 is hinged to the frame 10. The pull plate 60 can deflect relative to the frame 10 under the action of an external force to pull the rotating shaft 50 and the cutter head to deflect relative to the main shaft 20, so as to send a fixture 40 at the lowermost end of the cutter head 30 to the lowermost end of the main shaft 20. A plurality of fixtures 40 are evenly arranged along the circumferential direction on the contour edge of the cutter head 30, with one end of each extending towards the rotating shaft 50 and the other end of each extending obliquely towards the outside of the cutter head 30. An elastic pull rod 70 is also arranged at the other end of the pull plate 60, and the other end of the elastic pull rod 70 is detachably fixed on the frame 100. In this embodiment, the elastic pull rod 70 is a spring.

[0027] As Figure 3-5 shown, a guide ring 61 extending away from the main shaft 20 is arranged in the middle of the pull plate 60. A bearing 90 is arranged in the guide ring 61, and the rotating shaft 50 is arranged in the bearing 90. Two guide plates 80 are also arranged on the pull plate 60. The two guide plates 80 are arranged to cover the periphery of the larger end of the cutter head 30 and are in sliding connection with it. One ends of the two guide plates 80 respectively extend to both sides of the radial direction of the main shaft 20 and are in matching abutment against its side walls. Avoidance spaces 81 for avoiding the cutter head 30 and the fixtures 40 thereon are formed at the lower parts of the two guide plates 80. In this embodiment, the two guide plates 80 are both arc-shaped structures adapted to the frame 100 and are respectively fixed on the two side walls of the pull plate 60 through a connecting plate 82. A rotary part 62 is arranged at one end of the pull plate 60. The rotary part 62 is hinged to the mounting plate 10, and the mounting plate 10 is integrally formed with the frame 100. In application, it can also be set according to the actual structure, and the mounting plate 10 is detachably fixed on the frame 100 so as to arrange the cutter head 30 at an appropriate position relative to the main shaft 20.

[0028] As Figure 1 、 5 shown, during operation, the frame 100 pulls the pull plate 60 through the mounting plate 10. During the process of the main shaft 20 moving up and down to change the tool, the main shaft 20 pushes the two guide plates 80 to drive the pull plate 60 to deflect relative to the frame 100. At the same time, the driving device drives the rotating shaft 50 in the guide ring 61 to rotate and drives the cutter head 30 to rotate. The rotating shaft 50 is in sliding connection with the pull plate through the bearing 90, ensuring that the turntable 30 thereon can rotate synchronously during the deflection process.

[0029] As Figure 6As shown in the figure, the tool disc 30 includes a bottom plate 31 and a number of fixture plates 32. The bottom plate 31 is of an annular structure, which is fitted around the outer periphery of the rotating shaft 50 and is in driving connection with it. A number of fixture plates 32 extending radially outward are evenly arranged along the outer contour edge of the bottom plate 31. The end part of each fixture plate 32 is bent outward and extends to the side of the guiding plate 80. A fixture 40 is vertically installed at the end part of each fixture plate 32.

[0030] When loading the tool, the driving mechanism on the machining center drives the belt to move the main shaft 20 upward, pushing the two guiding plates 80 to drive the pulling plate 60 to deflect relative to the machine frame 100. Under the action of the elastic pull rod 70, the lower end of the tool disc 30 is pulled to the lower part of the main shaft 20; after reaching the position, the main shaft 20 moves downward, and the two guiding plates 80 further finely adjust the position of the tool disc 30 so that the lowermost fixture 40 on it is exactly located directly below the main shaft 20. The tool shank in the fixture 40 is inserted into the main shaft 20, and the clamping parts in the main shaft 20 act synchronously to clamp the shank and tighten and fix the tool on the main shaft 20. At the same time, the guiding plate 80 is pushed to drive the pulling plate 60 to continuously deflect, so that the lower part of the tool disc 30 moves away from the main shaft 20, completing the automatic tool loading. The main shaft 20 drives the tool on it to rotate for cutting processing.

[0031] When changing the tool, the main shaft 20 moves upward, and the guiding plate 80 pushes the lower part of the tool disc 30 to deflect toward the main shaft 20. The elastic pull rod 70 pulls the tool disc and makes the lowermost fixture 40 on it clamp the tool shank. Cooperating with the relaxation action of the clamping parts in the main shaft 20, the tool is clamped on the fixture 40. The main shaft 20 continues to move upward, and the driving device drives the rotating shaft 50 to rotate, turning the fixture clamping the required tool to the lowermost part of the tool disc 30. Repeat the above tool loading action process.

[0032] The machine tool spindle is a functional component, which is internally provided with a clamping mechanism and is in driving connection with a linear motion driving device to clamp or relax the tool or workpiece, and its outer wall is in driving connection with a circular motion driving device to drive the tool or workpiece to rotate. The basic structure of the spindle belongs to the common knowledge of those skilled in the art, and its structure will not be described in detail here.

[0033] In the present utility model, by hinging the tool disc 30 on the machine frame 100 and arranging it obliquely on the radial side of the main shaft 20, and providing a pulling plate 60 and a guiding plate 80 between the tool disc 30 and the main shaft 20, and providing an elastic pull rod 70 between the tool disc 30 and the machine frame 100, it is possible to push the tool disc to rotate relative to the machine frame 100 during the up and down movement of the main shaft 20 and send the lowermost fixture 40 on the tool disc 30 directly below the main shaft 20. Cooperating with the action of the clamping parts in the main shaft 20, it is possible to realize the automatic tool loading and tool changing actions directly on the tool magazine. The structure is relatively simple and the layout is compact. The tool changing efficiency is relatively high, and the overall space occupied by the mechanism is small.

[0034] The above does not impose any limitation on the technical scope of the present utility model. Any modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A tool magazine structure facilitating quick tool change, which is arranged on a machine frame. A tool magazine and a spindle capable of moving along the Z direction are arranged on the machine frame. The tool magazine includes a tool disc and a plurality of jigs mounted thereon and used for clamping tools. The characteristics are as follows: The tool disc is a disc structure obliquely arranged beside the radial direction of the spindle. Its larger end faces the spindle and its lower end can extend below the axial direction of the spindle. A rotating shaft drivingly connected thereto is arranged at the center of the tool disc. The rotating shaft is drivingly connected to a driving device and can be driven by it to drive the tool disc to rotate; a pulling plate is rotatably connected to the end of the rotating shaft facing the spindle. One end of the pulling plate is hinged to the machine frame. The pulling plate can deflect relative to the machine frame under the action of an external force to pull the rotating shaft and the tool disc to deflect relative to the spindle, so as to send one of the jigs at the lowermost end of the tool disc to the lowermost end of the spindle; A plurality of the jigs are evenly arranged in a circumferential array on the contour edge of the tool disc. One end of each of them extends towards the rotating shaft, and the other end of each of them extends obliquely towards the outside of the tool disc.

2. The tool magazine structure facilitating quick tool change according to claim 1, wherein, An elastic pull rod is further arranged at the other end of the pulling plate. The other end of the elastic pull rod is detachably fixed on the machine frame.

3. The tool magazine structure for facilitating quick tool change according to claim 2, wherein The elastic pull rod is a spring.

4. The tool magazine structure facilitating quick tool change according to claim 1, characterized in that, Two guiding plates are further arranged on the pulling plate. The two guiding plates are matched to cover the periphery of the larger end of the tool disc and are slidably connected thereto. One ends of the two guiding plates respectively extend to both sides of the radial direction of the spindle and are matched to abut against the side walls thereof. Avoidance spaces for avoiding the tool disc and the jigs thereon are formed at the lower parts of the two guiding plates.

5. The tool magazine structure for facilitating quick tool change according to claim 4, wherein The tool disc includes a bottom plate and a plurality of jig plates. The bottom plate is an annular structure, which is sleeved around the rotating shaft and drivingly connected thereto. A plurality of jig plates extending radially towards the outside are evenly arranged on the outer contour edge thereof. The end of each jig plate bends towards the outside and extends to the side of the guiding plate. One jig is vertically installed at the end of each jig plate.

6. The tool magazine structure facilitating quick tool change according to claim 1, characterized in that, A guide ring extending away from the spindle is arranged in the middle of the pulling plate. A bearing is arranged in the guide ring, and the rotating shaft is arranged in the bearing.

7. The tool magazine structure facilitating quick tool change according to any one of claims 1-6, characterized in that One end of the pulling plate is hinged with a mounting plate, and the mounting plate is detachably fixed to and integrally formed with the machine frame.

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