Automatic cutter replacing device of numerical control milling machine

Abstract

The utility model is suitable for the technical field of milling machine cutter replacement, and provides an automatic cutter replacement device of a numerical control milling machine. The cutter clamping cavity is formed in the cutter fixing table; the cutter dismounting sleeve is arranged at the top of the cutter fixing table and is close to the upper part of the cutter clamping cavity; the tool chuck is arranged at the top of the tool fixing table; the cutter is embedded into the cutter chuck; the locking nut is spirally screwed on the outer side wall of the cutter; the limiting block is arranged on the outer side wall of the tool chuck; the limiting groove is formed in the inner side wall of the cutter dismounting sleeve; the dismounting assembly is arranged on the outer side wall of the cutter dismounting sleeve; disassembly and assembly between the cutter and the cutter chuck can be achieved through the disassembly assembly, so that automatic replacement of the cutter is achieved, cutter storage is achieved through the cutter clamping cavity and the cutter disassembly sleeve, different types of cutters can be used subsequently according to requirements, subsequent disassembly and assembly operation is achieved, and workers do not need to conduct disassembly and assembly operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of tool replacement for milling machines, in particular to an automatic tool replacement device for numerically controlled milling machines. Background Art

[0002] CNC milling machine is an automatic processing equipment developed on the basis of general milling machine. The processing technology of the two is basically the same, and the structure is somewhat similar. CNC milling machine is divided into two categories: without tool magazine and with tool magazine. CNC milling machine with tool magazine is also called machining center. The milling head on the CNC milling machine is mostly connected to the milling machine spindle through a chuck to realize the processing of the workpiece.

[0003] When replacing the tool of the current CNC milling machine, the staff needs to remove the locking nut first. The whole replacement process is complicated, the labor intensity of the staff is high, the replacement is slow, and the use efficiency is reduced.

[0004] Therefore, an automatic tool changing device for a CNC milling machine is proposed. Utility Model Content

[0005] The utility model provides an automatic tool replacement device for a numerically controlled milling machine, aiming to solve the problem that the manual tool replacement operation of the existing numerically controlled milling machine is complicated and inefficient.

[0006] The utility model is implemented as follows: an automatic tool changing device for a numerically controlled milling machine comprises: a tool fixing platform; a tool holding cavity provided inside the tool fixing platform; and a tool disassembly sleeve provided at a position above the tool holding cavity on the top of the tool fixing platform; a tool chuck provided at the top of the tool fixing platform; a tool embedded in the tool chuck; a locking nut spirally screwed on the outer wall of the tool; a limiting block provided on the outer wall of the tool chuck; a limiting groove provided on the inner wall of the tool disassembly sleeve; a disassembly component provided on the outer wall of the tool disassembly sleeve; wherein the disassembly component comprises: a fixing sleeve provided on the outer wall of the tool disassembly sleeve; a cylinder provided on the outer wall of the fixing sleeve; a motor cover provided at the output end of the cylinder; a servo motor provided inside the motor cover; and a screwdriver provided at the output end of the servo motor.

[0007] Preferably, the automatic tool changing device for a CNC milling machine further includes an inner cavity opened inside the tool fixing platform close to the outside of the tool clamping cavity; a hydraulic cylinder arranged on the inner side wall of the inner cavity; and a clamp head arranged at the output end of the hydraulic cylinder.

[0008] Preferably, there are eight tool clamping cavities in total, and the eight tool clamping cavities are symmetrically arranged inside the tool fixing platform, and the tool clamping cavities are communicated with the tool disassembly sleeve.

[0009] Preferably, the limit block and the limit slot match and fit together, and the limit block and the limit slot are slidably connected.

[0010] Preferably, the locking nut passes through the tool chuck, and the locking nut and the screwdriver match and fit.

[0011] Preferably, the tool and the tool chuck are slidably connected.

[0012] Preferably, the clamp head extends through the tool holding cavity.

[0013] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0014] The disassembly assembly can be used to disassemble and install the tool and the tool chuck, thereby realizing automatic replacement of the tool, and the tool can be stored through the tool holding cavity and the tool disassembly sleeve, so that different types of tools can be used according to needs in the future. The guide limit between the limit block and the limit groove can achieve precise positioning of the locking nut and the screwdriver, thereby realizing subsequent disassembly and assembly operations, without the need for staff to perform disassembly and assembly operations, and with high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the tool disassembly sleeve, tool chuck and tool structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the disassembly assembly structure of the utility model;

[0018] Figure 4 This is a cross-sectional view of the tool fixing table of the utility model;

[0019] Figure 5 This utility model Figure 4 Enlarged view of point A in .

[0020] In the figure: 1. tool fixing table; 2. tool clamping cavity; 3. tool disassembly sleeve; 4. tool chuck; 5. tool; 6. locking nut; 7. limit block; 8. limit groove; 9. disassembly assembly; 91. fixing sleeve; 92. cylinder; 93. motor cover; 94. servo motor; 95. screwdriver; 10. inner cavity; 11. hydraulic cylinder; 12. fixture head. DETAILED DESCRIPTION

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0022] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] The utility model provides an automatic tool replacement device for a CNC milling machine. Figure 1-5 As shown, it includes a tool fixing platform 1, a tool holding cavity 2 is provided inside the tool fixing platform 1, there are eight tool holding cavities 2 in total, and the eight tool holding cavities 2 are symmetrically arranged inside the tool fixing platform 1, the tool holding cavity 2 is communicated with the tool disassembly sleeve 3, a tool disassembly sleeve 3 is provided at the top of the tool fixing platform 1 near the upper position of the tool holding cavity 2, a tool chuck 4 is provided at the upper position of the tool disassembly sleeve 3, a tool 5 is embedded in the tool chuck 4, the tool 5 and the tool chuck 4 are slidably connected, a locking nut 6 is penetrated on one side of the outer wall of the tool chuck 4, the locking nut 6 penetrates through the tool chuck 4, a limiting block 7 is provided on one side of the outer wall of the tool chuck 4, a limiting groove 8 is provided on one side of the inner wall of the tool disassembly sleeve 3, A fixing sleeve 91 in the disassembly assembly 9 is provided on the outer wall of one side of the tool disassembly sleeve 3, and a cylinder 92 is fixedly connected to the fixing sleeve 91 at a central position of the outer wall on one side away from the tool disassembly sleeve 3 by bolts, and a motor cover 93 is fixedly connected to the cylinder 92 through an output end on one side, and a servo motor 94 is fixedly connected to the central position of the inner wall on one side of the motor cover 93 by bolts, and a screwdriver 95 is fixedly connected to the servo motor 94 through an output end on one side, and the locking nut 6 and the screwdriver 95 match and fit each other. An inner cavity 10 is opened inside the tool fixing table 1 at an outer position close to the tool clamping cavity 2, and a hydraulic cylinder 11 is fixedly connected to the inner wall of one side of the inner cavity 10 by bolts, and a clamp head 12 is fixedly connected to the hydraulic cylinder 11 through an output end on one side.

[0024] It should be noted that, when replacing the tool on the existing CNC milling machine, the staff needs to remove the locking nut first, and the whole replacement process is complicated. The staff has high labor intensity when operating, and the replacement is slow, which reduces the efficiency of use. In this embodiment, the disassembly component 9 can realize the disassembly and installation between the tool 5 and the tool chuck 4, so as to realize the automatic replacement of the tool 5, and the tool 5 can be stored through the tool clamping cavity 2 and the tool disassembly sleeve 3, so that different types of tools 5 can be used according to needs in the future. Through the guide limit between the limit block 7 and the limit groove 8, the locking nut 6 and the screwdriver 95 can be accurately positioned, thereby realizing the subsequent disassembly and assembly operations, without the need for staff to perform disassembly and assembly operations, and the efficiency is high.

[0025] Specifically, in this embodiment, this scheme mainly includes a disassembly component 9, the tool fixing table 1 is installed inside the CNC milling machine, and the tool chuck 4 is installed on the mechanical arm of the CNC machine tool. When the tool 5 is replaced, the mechanical arm drives the tool chuck 4 to move to one side of the tool disassembly sleeve 3, and inserts the tool 5 into the empty tool clamping cavity 2. Under the limit guidance of the limit block 7 and the limit groove 8, after the tool 5 is inserted into the tool clamping cavity 2, the cylinder 92 drives the motor cover 93 to move through the output end on one side thereof, and the motor cover 93 moves inside the fixed sleeve 91, and the servo motor 94 drives the motor cover 93 to move through the output end on one side thereof. The output end on one side drives the screwdriver 95 to rotate slowly, and as the screwdriver 95 moves, the screwdriver 95 is inserted into the locking nut 6, and as the screwdriver 95 rotates, the locking nut 6 is loosened, the tool 5 and the tool chuck 4 are separated, and the hydraulic cylinder 11 drives the clamp head 12 to move through the output end on one side thereof, and the clamp head 12 clamps and fixes the tool 5 inside the tool clamping cavity 2. When using other tools 5, the robot arm drives the tool chuck 4 to be sleeved on the tool 5, and the disassembly component 9 is used to realize the locking nut 6 to lock the tool chuck 4 and the tool 5, so as to realize automatic replacement of the tool 5.

[0026] In a further preferred embodiment of the present invention, Figure 1-2 As shown, the limiting block 7 and the limiting groove 8 match and fit together, and the limiting block 7 and the limiting groove 8 are slidably connected.

[0027] In this embodiment, the tool chuck 4 can be positioned and inserted into the tool disassembly sleeve 3 by limiting the limiting block 7 and the limiting groove 8, so that the disassembly component 9 can be conveniently used to tighten or loosen the locking nut 6, thereby realizing the disassembly and assembly of the tool 5.

[0028] In a further preferred embodiment of the present invention, Figure 5 As shown, the clamping head 12 passes through the tool holding cavity 2 .

[0029] In this embodiment, the tool 5 can be clamped and fixed by the clamp head 12 to ensure that the tool 5 is fixed inside the tool fixing platform 1 .

[0030] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0031] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0032] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0033] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. Automatic tool changing device for CNC milling machine, characterized in that: include: Tool fixing table (1); A tool clamping cavity (2) provided inside the tool fixing platform (1); and A tool disassembly sleeve (3) is arranged on the top of the tool fixing platform (1) near the upper position of the tool clamping cavity (2); A tool chuck (4) arranged on the top of the tool fixing platform (1); A tool (5) embedded in the tool chuck (4); A locking nut (6) screwed onto the outer side wall of the tool (5); A limit block (7) provided on the outer side wall of the tool chuck (4); A limiting groove (8) is provided on the inner side wall of the tool disassembly sleeve (3); A disassembly component (9) disposed on the outer side wall of the tool disassembly sleeve (3); Wherein, the disassembly assembly (9) comprises: A fixing sleeve (91) disposed on the outer side wall of the tool disassembly sleeve (3); A cylinder (92) disposed on the outer side wall of the fixing sleeve (91); A motor cover (93) provided at the output end of the cylinder (92); A servo motor (94) disposed inside the motor cover (93); A screwdriver (95) is arranged at the output end of the servo motor (94).

2. The automatic tool changing device for a CNC milling machine according to claim 1, characterized in that: It also includes an inner cavity (10) opened inside the tool fixing platform (1) and close to the outer side of the tool clamping cavity (2); A hydraulic cylinder (11) disposed on the inner wall of the inner cavity (10); A clamp head (12) is arranged at the output end of the hydraulic cylinder (11).

3. The automatic tool changing device for a CNC milling machine according to claim 1, characterized in that: A total of eight tool clamping cavities (2) are provided, and the eight tool clamping cavities (2) are symmetrically arranged inside the tool fixing platform (1), and the tool clamping cavities (2) are connected to the tool disassembly sleeve (3).

4. The automatic tool changing device for a CNC milling machine according to claim 1, characterized in that: The limiting block (7) and the limiting groove (8) are matched and fit together, and the limiting block (7) and the limiting groove (8) are slidably connected.

5. The automatic tool changing device for a CNC milling machine according to claim 1, characterized in that: The locking nut (6) passes through the tool chuck (4), and the locking nut (6) and the screwdriver (95) match and fit together.

6. The automatic tool changing device for a CNC milling machine according to claim 1, characterized in that: The tool (5) and the tool chuck (4) are slidably connected.

7. The automatic tool changing device for a CNC milling machine according to claim 2, characterized in that: The clamp head (12) passes through the tool clamping cavity (2).

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