Tool changing device of numerical control machine tool

Abstract

The utility model relates to the technical field of numerical control machine tools, and provides a tool changer of a numerical control machine tool. The cutterhead is rotationally arranged on the machining table top, and the cutterhead is provided with a plurality of cutter clamping grooves; the cutter clamping assembly is arranged on the cutter clamping groove, the cutter clamping assembly comprises two cutter clamping pieces, the two cutter clamping pieces are movably arranged on the cutter clamping groove, and the two cutter clamping pieces get close to each other or get away from each other after moving and are used for clamping a cutter. According to the technical scheme, the problems that time and labor are consumed, personal errors are increased, the production efficiency is limited, and operation risks possibly exist due to the fact that tools are manually replaced in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled machine tools, and in particular to a tool changing device for numerically controlled machine tools. Background Art

[0002] Automatic tool changer is one of the key technologies in CNC machine tools to improve production efficiency, reduce auxiliary time and enhance processing flexibility. The traditional manual tool change method requires the operator to interrupt the operation between different processing steps and manually change the tool, which is not only time-consuming and labor-intensive, but also increases human errors, limits production efficiency, and may have operational risks. Utility Model Content

[0003] The utility model provides a tool changing device for a CNC machine tool, which solves the problem of manual tool changing in the related art, which is not only time-consuming and labor-intensive, but also increases human errors, limits production efficiency, and may have operational risks.

[0004] The technical solution of the utility model is as follows: A tool changing device for a CNC machine tool comprises:

[0005] Processing table tops;

[0006] A cutter disc, the cutter disc is rotatably arranged on the processing table, and the cutter disc has a plurality of cutter clamping grooves;

[0007] A knife clamping assembly, wherein the knife clamping assembly is arranged on the knife clamping groove, and the knife clamping assembly includes a knife clamping member, wherein the knife clamping member has two knife clamping members, and the two knife clamping members are movably arranged on the knife clamping groove, and the two knife clamping members move closer to or farther from each other to clamp the knife;

[0008] An elastic member is arranged on the cutter disc and located in the cutter clamping groove, one end of which acts on the cutter clamping member to provide a force for bringing the two cutter clamping members closer to each other.

[0009] Optionally, the knife clamping member has an abutment slope, and further comprises:

[0010] A first linear driving member, wherein the first linear driving member is disposed on the processing table;

[0011] An abutment block is arranged at the moving end of the first linear drive member, and after the abutment block moves, it abuts against or cancels the abutment with the two abutment inclined surfaces.

[0012] Optionally, it also includes:

[0013] A first transmission gear, the first transmission gear is rotatably disposed on the processing table,

[0014] A second transmission gear, wherein the second transmission gear is disposed on the cutter disc and is coaxial with the cutter disc, and the second transmission gear is meshed with the first transmission gear.

[0015] Optionally, it also includes:

[0016] a second linear drive member, the second linear drive member being disposed on the processing table;

[0017] A connecting head is arranged at the moving end of the second linear drive member, and after the connecting head moves, it approaches or moves away from the cutter disc, and is used to connect with one of the cutters.

[0018] Optionally, the cutter disc is fan-shaped, and the cutter disc moves closer to or away from the second linear drive member after rotation.

[0019] Optionally, the knife clamping member has a clamping portion, and the clamping portion is arc-shaped.

[0020] Optionally, a gear ratio between the first transmission gear and the second transmission gear is less than 1.

[0021] Optionally, it also includes: a processing lathe, which has a loading station, a processing station and an unloading station arranged in a circle; and a clamping assembly, which is rotatably arranged on the processing lathe and passes through the loading station, the processing station and the unloading station in sequence after rotation.

[0022] The working principle and beneficial effects of the utility model are:

[0023] In the utility model, the motor drives the cutter disc to rotate and aligns the specific tool clamping groove on the cutter disc to the tool changing position. Two tool clamping parts are located in the tool clamping groove and are driven by the elastic part to approach each other. It is used to clamp tools of different sizes. The automated tool changing process is fast and accurate, which reduces manual intervention and significantly improves the overall operating efficiency of the machine tool. It is suitable for multiple types of tools, and tool changing can quickly adapt to various processing requirements and improve flexibility. The elastic element reduces wear, prolongs service life, simplifies maintenance, and reduces operating costs. It reduces manual operation, improves the safety factor of the workshop, reduces the risk of work-related injuries, and meets the requirements of modern safe production. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0025] Figure 1 It is a schematic diagram of the structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the processing lathe of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the knife clamping assembly of the utility model;

[0028] In the figure: 1. processing lathe; 101. loading station; 102. processing station; 103. unloading station; 2. clamping assembly; 3. processing table; 4. tool disc; 401. tool clamping groove; 5. tool clamping assembly; 501. tool clamping member; 5011. abutting slope; 5012. clamping part; 502. elastic member; 6. first linear drive member; 7. abutting block; 8. first transmission gear; 9. second transmission gear; 10. second linear drive member; 11. connector. DETAILED DESCRIPTION

[0029] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0030] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0031] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0032] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0033] Reference Figure 1~Figure 3A tool changing device for a numerical control machine tool is proposed, comprising: a processing table 3; a tool disk 4, which is rotatably arranged on the processing table 3, and has a plurality of tool clamping grooves 401; a tool clamping assembly 5, which is arranged on the tool clamping groove 401, and the tool clamping assembly 5 includes a tool clamping member 501, and the tool clamping member 501 has two, and the two tool clamping members 501 are movably arranged on the tool clamping groove 401, and the two tool clamping members 501 move closer to or away from each other to clamp the tool. The tool clamping member 501 has an abutting inclined surface 5011, and also comprises: a first linear driving member 6, which is arranged on the processing table 3; an abutting block 7, which is arranged at the moving end of the first linear driving member 6, and the abutting block 7 abuts or cancels the abutting with the two abutting inclined surfaces 5011 after moving.

[0034] In this embodiment, the processing table 3 is the basic platform of the machine tool, providing a stable support environment to ensure the precise installation and operation of the cutter disc 4 and other components. The cutter disc 4 is rotatably arranged on the processing table 3, and is provided with a plurality of tool clamping grooves 401 (tool installation positions) to facilitate accommodating different tools, and is positioned to the tool changing position by rotation for tool changing operation. The tool clamping assembly is directly located in the tool clamping groove 401, including a tool clamping member 501, each tool clamping groove 401 has two tool clamping members 501, and the tool clamping members 501 can move and can approach or move away from each other to achieve a tight grip or release of the tool. This design ensures the stable clamping of the tool and reduces the offset position during processing. The elastic member 502 is located in the tool clamping groove 401, acts on the tool clamping member 501, and promotes the tool clamping member 501 to approach through elastic force, ensuring the stability of the clamping force, while providing a certain adaptability, reducing vibration, and improving processing accuracy. Workflow and advantages: The CNC instruction controls the rotation of the cutter disc 4, positioning it to the target groove, and the tool clamping member 501 automatically clamps or releases the tool, reducing manual intervention. The tool clamping member 501 is correctly installed in the tool clamping groove 401 to ensure processing consistency. The elastic member 502 is adjusted to automatically adjust the clamping force according to different tool sizes and is suitable for a wide range of tools. The operation process is simplified, downtime is reduced, production efficiency is improved, and maintenance is simple.

[0035] The cutter disc 4 is rotatably arranged on the processing table 3, and contains a plurality of tool clamping grooves 401, which are precisely distributed. Two tool clamping members 501 are movably arranged in each tool clamping groove 401, and an elastic member 502 is arranged on each tool clamping member 501. The elastic member 502 can be a spring or other element with elastic force, telescopic force, and the ability to provide a resetting elastic force. One end of the elastic member 502 is arranged on the groove wall of the tool clamping groove 401, and the other end acts on the tool clamping member 501 to provide a force for the two tool clamping members 501 to approach each other. The tool clamping member 501 has a clamping portion 5012, and the clamping portion 5012 is arc-shaped. Through the mutual approach and distance of the two tool clamping members 501, it can adapt to the clamping of tools of various sizes, thereby improving adaptability. The arc-shaped clamping portion 5012 improves the stability of clamping. When the tool needs to be changed, the first linear drive member 6 moves, driving the abutment block 7 to abut against the two abutment slopes 5011, so that the two tool clamping members 501 move away from each other, thereby releasing the clamped tool.

[0036] Furthermore, it also includes:

[0037] The first transmission gear 8 is rotatably arranged on the processing table 3.

[0038] The second transmission gear 9 is arranged on the cutter disc 4 and is coaxial with the cutter disc 4 . The second transmission gear 9 is meshed with the first transmission gear 8 .

[0039] In this embodiment, the first transmission gear 8 serves as the starting point of power transmission. The second transmission gear 9 is arranged on the cutter disc 4, coaxial with the cutter disc 4, ensuring synchronous rotation and tightly meshing with the first transmission gear 8. The gear ratio of the first transmission gear 8 to the second transmission gear 9 is less than 1, which means that the number of teeth of the driving gear (first transmission gear 8) is less than that of the driven gear (second transmission gear 9). The design of the gear ratio less than 1 increases the speed of the driven gear and reduces the torque, which is suitable for precise positioning operations with fast tool change without a large amount of torque. Through the meshing of the gears, the power transmission is stable, ensuring that the cutter disc 4 rotates accurately and the tool change position is accurate. The setting of the gear ratio optimizes the tool change process, reduces power loss, improves the overall machine tool work efficiency, and speeds up the tool change speed. A lower gear ratio also means a small demand for power, reduces the burden on the drive system, and helps to protect the long-term operation and maintenance of the machine tool. In summary, this embodiment not only enhances the accuracy and efficiency of tool change of the CNC machine tool through a carefully designed gear transmission system, especially the setting of the gear ratio, but also takes into account the stability and maintainability of the system.

[0040] Furthermore, it also includes:

[0041] A second linear drive member 10, the second linear drive member 10 is arranged on the processing table 3;

[0042] The connecting head 11 is arranged at the moving end of the second linear driving member 10. After moving, the connecting head 11 moves closer to or away from the cutter disc 4 and is used to connect with a cutter.

[0043] In this embodiment, the second linear drive 10 added to the processing table 3, as a new component for power transmission, provides a power source for the tool changing process and realizes precise control. The connector 11 is located at the moving end of the second linear drive 10. This design enables the connector 11 to move precisely, and to approach or move away from the cutter disc 4 through control instructions to complete the engagement or separation operation with the tool. Working principle and advantages: Through the combination of the second linear drive 10 and the connector 11, the degree of automation is greatly improved, no manual intervention is required, and the tool changing process is faster. The precise movement of the connector 11, approaching or moving away from the cutter disc 4, realizes precise docking or disengagement with the tool, and improves the tool changing accuracy. It is suitable for multiple types of tools, and can easily meet the tool changing requirements of tools of different specifications by adjusting the linear drive control. Reduce manual operation, reduce the risk of misoperation, improve production efficiency, and simplify maintenance, and reduce long-term operating costs. The tool changing device of the CNC machine tool of this embodiment further realizes efficient and precise automatic replacement of the tool by introducing the second linear drive 10 and the connector 11, which reflects the intelligence and flexibility of CNC machine tool technology. Specifically: the second linear drive member 10 drives the connecting head 11 to move, and the connecting head 11 is used to connect different tools to meet different processing requirements. After the tool disc 4 rotates, it drives the appropriate tool toward the second linear drive member 10. The second linear drive member 10 moves, driving the connecting head 11 to approach and connect with the relative tool to achieve tool installation.

[0044] Furthermore, the cutter disc 4 is fan-shaped, and the cutter disc 4 moves closer to or farther away from the second linear drive member 10 after rotation.

[0045] In this embodiment, the fan-shaped cutter disc 4 is designed to utilize space more compactly and can effectively accommodate more cutting tools. At the same time, the tool positions are arranged in an orderly manner, which is conducive to quick positioning. After rotation, it is close to the second linear drive member 10 for tool changing operations, and after rotation, it is away from the second linear drive member 10 to free up more space to provide the second linear drive member 10 and the connecting head 11 installed thereon for normal processing operations. Through the above layout, the overall design of the CNC machine tool is more compact and space-saving.

[0046] Furthermore, the processing lathe 1 has a loading station 101, a processing station 102, and an unloading station 103 arranged in a circle; it also includes a clamping assembly 2, which is rotatably arranged on the processing lathe 1, and after rotation, passes through the loading station 101, the processing station 102 and the unloading station 103 in sequence.

[0047] In this embodiment, the processing lathe 1 is designed as a circular layout, with four workstations distributed around a circle: a loading station 101, a processing station 102 and an unloading station 103, forming an efficient material flow path. The clamping assembly is used to clamp the material and drive the material to pass through the three workstations in sequence. The loading station 101 is used to place the material, the processing station 102 is used to process the material, and the unloading station 103 is used to release the processed material, thereby improving automation and production efficiency.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A tool changing device for a CNC machine tool, characterized in that: include: Processing table (3); A cutter disc (4), the cutter disc (4) being rotatably disposed on the processing table (3), the cutter disc (4) having a plurality of cutter clamping grooves (401); A knife clamping assembly (5), the knife clamping assembly (5) being arranged on the knife clamping groove (401), the knife clamping assembly (5) comprising: A knife clamping member (501), wherein the knife clamping member (501) has two members, and the two knife clamping members (501) are movably arranged on the knife clamping groove (401). After the two knife clamping members (501) move, they move closer to or farther from each other, and are used to clamp the knife; An elastic member (502) is arranged on the knife disc (4) and is located in the knife clamping groove (401), with one end acting on the knife clamping member (501) to provide a force for bringing the two knife clamping members (501) closer to each other.

2. A tool changing device for a CNC machine tool according to claim 1, characterized in that: The knife clamping member (501) has an abutting inclined surface (5011), and further comprises: A first linear driving member (6), wherein the first linear driving member (6) is arranged on the processing table (3); An abutment block (7), wherein the abutment block (7) is arranged at the moving end of the first linear drive member (6), and after the abutment block (7) moves, it abuts against or cancels the abutment with the two abutment inclined surfaces (5011).

3. A tool changing device for a CNC machine tool according to claim 1, characterized in that: Also includes: A first transmission gear (8), the first transmission gear (8) being rotatably disposed on the processing table (3); A second transmission gear (9), the second transmission gear (9) is arranged on the cutter disc (4) and is coaxial with the cutter disc (4), and the second transmission gear (9) is meshed with the first transmission gear (8).

4. A tool changing device for a CNC machine tool according to claim 1, characterized in that: Also includes: A second linear driving member (10), wherein the second linear driving member (10) is arranged on the processing table (3); A connecting head (11), wherein the connecting head (11) is arranged at the moving end of the second linear drive member (10), and after moving, the connecting head (11) moves closer to or farther away from the cutter disc (4) and is used to connect with one of the cutters.

5. A tool changing device for a CNC machine tool according to claim 4, characterized in that: The cutter disc (4) is fan-shaped, and after rotating, the cutter disc (4) moves closer to or farther from the second linear drive member (10).

6. The tool changing device for a CNC machine tool according to claim 1, characterized in that: The knife clamping member (501) has a clamping portion (5012), and the clamping portion (5012) is arc-shaped.

7. A tool changing device for a CNC machine tool according to claim 3, characterized in that: The gear ratio between the first transmission gear (8) and the second transmission gear (9) is less than 1.

8. The tool changing device for a CNC machine tool according to claim 1, characterized in that: It also includes a processing lathe (1), the processing lathe (1) having a loading station (101), a processing station (102) and a unloading station (103) arranged in a circle; it also includes a clamping assembly (2), the clamping assembly (2) is rotatably arranged on the processing lathe (1), and after rotation, it passes through the loading station (101), the processing station (102) and the unloading station (103) in sequence.

Images