Platform for testing automatic tool changing mechanism of tool magazine

Abstract

The embodiment of the utility model discloses a platform for testing an automatic tool changing mechanism of a tool magazine. The platform comprises a base; the fixing mechanisms are arranged on the base, and each fixing mechanism is used for fixing the tool magazine to the base; the three dial indicators correspond to the fixing mechanisms respectively and are arranged to be fixed relative to the base, and when the tool changing arm rotates around the rotating axis to be converted from the tool taking position to the tool installing position, the positioning surface of the tool changing arm abuts against the three corresponding dial indicators to generate three actual readings; the calculation unit is used for calculating an actual included angle between an actual plane determined by the three actual readings and a reference plane determined by the three reference readings, and when the positioning surface of the tool changing arm in the tool mounting position is located in an expected plane, the three corresponding dial indicators are pressed against and generate the three reference readings; and the judging unit is used for judging that the spatial orientation of the positioning surface of the tool changing arm in the tool mounting position does not meet the requirement when the actual included angle is greater than the threshold included angle.

Description

Technical Field

[0001] The utility model relates to the field of numerical control machine tools, in particular to a platform for testing an automatic tool changing mechanism of a tool magazine. Background Art

[0002] CNC machine tools are an important infrastructure of the machinery manufacturing industry. Their precision, automation level and reliability reflect the level of a country's manufacturing industry.

[0003] The tool magazine and its automatic tool changing mechanism are one of the core functional components of CNC machine tools. They are responsible for storing tools during the machining process and accurately delivering the tools to be used to the tool changing device under the control of the CNC system to complete the tool changing action. This process is crucial to improving machining accuracy, reducing tooling time, reducing measurement and machine tool adjustment auxiliary time, and reducing positioning errors caused by multiple installations. With the improvement of the degree of automation, the disc-type tool magazine has developed into a complex system integrating mechanical, electrical, and pneumatic (hydraulic). Due to its complex structure, fast tool changing action, and high positioning accuracy requirements, the disc-type tool magazine has become one of the components with a high failure rate in the machining center. Therefore, the tool magazine and automatic tool changing mechanism need to undergo component inspection, matching inspection, and long-term status monitoring before leaving the factory.

[0004] However, the factory inspection of tool magazines and automatic tool change mechanisms on the market mainly uses the simulated working state of the machining center to manually troubleshoot the faults one by one. This method is inefficient and time-consuming. Therefore, a new type of inspection equipment is urgently needed to improve the efficiency and accuracy of tool magazine inspection. Utility Model Content

[0005] In order to solve the above technical problems, the embodiments of the utility model are expected to provide a platform for testing the automatic tool changing mechanism of the tool magazine, which can improve the efficiency and accuracy of the tool magazine detection.

[0006] The technical solution of the utility model is achieved in this way:

[0007] The embodiment of the utility model provides a platform for testing an automatic tool changing mechanism of a tool magazine, the platform comprising:

[0008] Pedestal;

[0009] A plurality of fixing mechanisms are arranged on the base, each fixing mechanism is used to fix the tool magazine to the base;

[0010] three micrometers corresponding to each fixing mechanism, the three micrometers being arranged to remain fixed relative to the base, wherein when the tool changing arm of the automatic tool changing mechanism rotates about the rotation axis to switch from the tool taking position to the tool loading position, the positioning surface of the tool changing arm presses against the corresponding three micrometers to produce three actual readings;

[0011] a calculation unit for calculating actual angles between actual planes determined by the three actual readings and reference planes determined by three reference readings, wherein when the positioning surface of the tool change arm in the tool loading position is in a desired plane, the corresponding three dial indicators are pressed against and produce the three reference readings;

[0012] A determination unit is used to determine that the spatial orientation of the positioning surface of the tool changing arm in the tool mounting position does not meet the requirements when the actual angle is greater than a threshold angle.

[0013] For the above-mentioned platform according to the embodiment of the utility model: using three micrometers to compare the positioning surfaces of the tool changing arm face to face can greatly improve the positioning accuracy of the tool changing arm. This setting allows the platform to accurately measure the spatial orientation of the tool changing arm, ensuring that the tool changing arm can accurately install the tool to the spindle of the CNC machine tool. This improvement in accuracy is crucial to improving machining quality and reducing tool wear; the platform is designed with multiple fixing mechanisms, allowing multiple tool magazines to be fixed at the same time for inspection. This design significantly improves the inspection efficiency and can complete the inspection of the automatic tool changing mechanisms of multiple tool magazines in a shorter time, greatly improving the efficiency of production and maintenance; the calculation unit calculates The actual angle between the actual plane and the reference plane obtained, the judgment unit can accurately determine whether the spatial orientation of the positioning surface of the tool change arm meets the requirements. This precise fault diagnosis can ensure that the automatic tool change mechanism of each tool magazine operates in the best state and reduce the adverse effects caused by inaccurate tool change; by setting different threshold angles, different levels of accuracy requirements can be put forward for the tool change arm, which provides users with a high degree of flexibility, allowing the platform to adapt to application scenarios with different accuracy requirements, from high-precision processing to ordinary processing; because the positioning accuracy of the tool change arm is very high, it can effectively reduce tool alignment errors during the processing process, thereby improving processing efficiency and product quality. Reduced repeated processing and scrap rates caused by tool change errors, significantly improved production efficiency; by timely and accurate diagnosis and correction of tool change arm positioning errors, it can reduce machine tool failures and tool wear, thereby reducing maintenance and operating costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view schematic diagram of a platform for testing an automatic tool changing mechanism of a tool magazine according to an embodiment of the utility model;

[0015] Figure 2 It is a three-dimensional schematic diagram of a simulated axis of a platform and a corresponding tool changing arm according to an embodiment of the utility model;

[0016] Figure 3 It is a schematic top view of a simulated axis of a platform and a corresponding tool changing arm according to an embodiment of the utility model;

[0017] Figure 4 For along Figure 3 A schematic cross-sectional view taken along line BB in FIG.

[0018] Figure 5 is a three-dimensional schematic diagram of a platform according to another embodiment of the utility model;

[0019] Figure 6 It is a three-dimensional schematic diagram of the air pipe and oil pipe groove of the platform and the corresponding air pipe and oil pipe according to an embodiment of the utility model;

[0020] Figure 7 for Figure 5 An enlarged three-dimensional schematic diagram of the components in the dotted box in FIG.

[0021] Figure 8 A schematic diagram of a detection switch button and a signal alarm light of an operation interface of a platform according to an embodiment of the utility model;

[0022] Fig. 9 For along Figure 5 Schematic cross-sectional view taken along line CC in FIG. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] See also Figure 1 Combined with Figure 5 The embodiment of the utility model provides a platform 1 for testing the automatic tool changing mechanism M of the tool magazine TS. Figure 1 The tool magazine TS is schematically shown by an unfilled box, which is a place for storing tools used by CNC machine tools (not shown in the drawings). It can be in various forms such as circular, chain or ramped. The capacity of the tool magazine TS can be designed according to needs, ranging from a few tool positions to dozens of tool positions. In addition, the tool magazine TS is equipped with an automatic tool changing mechanism M, whose main component is a tool changing arm A, which is used to transfer tools between the tool magazine TS and the spindle of the CNC machine tool. It can accurately grab the tool and safely place it on the spindle or retrieve it from the spindle. The platform 1 may include:

[0025] Base 10, as in Figure 1 Schematically shown by a box filled with dots;

[0026] A plurality of fixing mechanisms 20 are provided on the base 10, such as Figure 1 In the figure, the cross-hatching box is schematically shown, and in the figure, Figure 1 Only two fixing mechanisms 20 are shown as examples, but the present invention is not limited thereto. Each fixing mechanism 20 is used to fix the tool magazine TS to the base 10.

[0027] Three micrometers 30 corresponding to each fixing mechanism 20 are arranged to remain fixed relative to the base 10, wherein when the tool changing arm A of the automatic tool changing mechanism M rotates around the rotation axis X to switch from the tool taking position to the tool loading position, the positioning surface LS of the tool changing arm A presses against the corresponding three micrometers 30 to produce three actual readings, wherein Figure 1 In the figure, the tool changing arm A in the tool taking position is shown by the dotted line, and the tool changing arm A in the tool loading position is shown by the solid line. In addition, it should be noted that: Figure 1 The probes of the three micrometers 30 shown in FIG. 3 are not in the same straight line;

[0028] The calculation unit 40 is used to calculate the actual angle AA between the actual plane AS determined by the three actual readings and the reference plane RS determined by the three reference readings, wherein when the positioning surface LS of the tool change arm A in the tool mounting position is in the expected plane, the corresponding three micrometers 30 are pressed against and generate the above three reference readings, and the expected plane here means that when the positioning surface LS of the tool change arm A in the tool mounting position is in the expected plane, it indicates that the spatial orientation of the positioning surface LS is correct, or in this case the tool change arm A can accurately install the tool to the spindle of the CNC machine tool, or the automatic tool change mechanism M does not have a fault;

[0029] The determination unit 50 is used to determine that the spatial orientation of the positioning surface LS of the tool changing arm A in the tool loading position does not meet the requirements when the actual angle AA is greater than the threshold angle. It is easy to understand that if higher precision requirements are required for the tool changing arm A, the threshold angle can be set to be smaller, and if lower precision requirements are required for the tool changing arm A, the threshold angle can be set to be larger.

[0030] For the above-mentioned platform 1 according to the embodiment of the utility model: using three micrometers 30 to compare the positioning surface LS of the tool change arm A face to face can greatly improve the positioning accuracy of the tool change arm A. This setting allows the platform 1 to accurately measure the spatial orientation of the tool change arm A, ensuring that the tool change arm A can accurately install the tool to the spindle of the CNC machine tool. This improvement in accuracy is crucial to improving machining quality and reducing tool wear; the platform 1 is designed with multiple fixing mechanisms 20, allowing multiple tool magazines TS to be fixed at the same time for detection. This design significantly improves the detection efficiency and can complete the detection of the automatic tool change mechanism M of multiple tool magazines TS in a shorter time, greatly improving the efficiency of production and maintenance; through the calculation unit 40 The actual angle AA between the calculated actual plane AS and the reference plane RS, the judgment unit 50 can accurately determine whether the spatial orientation of the positioning surface LS of the tool change arm A meets the requirements. This precise fault diagnosis can ensure that the automatic tool change mechanism M of each tool magazine TS operates in the best state and reduce the adverse effects caused by inaccurate tool change; by setting different threshold angles, different levels of accuracy requirements can be put forward for the tool change arm A, which provides users with a high degree of flexibility, so that the platform can adapt to application scenarios with different accuracy requirements, from high-precision processing to ordinary processing; because the positioning accuracy of the tool change arm A is very high, it can effectively reduce tool alignment errors during the processing process, thereby improving processing efficiency and product quality. Reduced repeated processing and scrap rate caused by tool change errors, significantly improved production efficiency; by timely and accurate diagnosis and correction of positioning errors of the tool change arm A, it can reduce machine tool failures and tool wear, thereby reducing maintenance and operating costs. In summary, through high-precision positioning detection, the ability to detect multiple tool magazines TS at the same time, accurate fault diagnosis, flexible adjustment of accuracy requirements, and improved processing efficiency and quality, it provides an efficient, reliable and economical solution for the CNC machine tool industry, greatly improving the performance and reliability of the automatic tool changing mechanism M.

[0031] In the preferred embodiment of the present invention, see Figures 2 to 4 Combined with Figure 5 , the platform 1 may also include:

[0032] A simulation axis 60 corresponding to each fixing mechanism 20 is fixedly arranged on the base 10 to simulate the spindle of the CNC machine tool, such as in Figure 3 and Figure 5 As shown in FIG. 1 , a flange F is formed on one of the simulation shaft 60 and the tool change arm A, and a groove G is formed on the other of the simulation shaft 60 and the tool change arm A. Figure 3 and Figure 4 It is specifically shown that the flange F is formed on the dummy shaft 60, and the groove G is formed on the tool change arm A, and wherein, in the tool loading position, the groove G is partially inserted by the flange F;

[0033] As in Figure 4 The measuring unit 70 shown in the figure is used to measure the actual gap AC between the bottom of the groove G and the top of the flange F;

[0034] The judging unit 50 is also used to judge that the concentricity between the tool changing center C of the tool changing arm A in the tool loading position and the simulation axis 60 does not meet the requirement when the difference between the actual gap AC and the reference gap is greater than the set value, or in other words, Figure 2 The degree of coincidence between the tool changing center C shown in the figure and the longitudinal axis 60X of the simulated shaft 60 does not meet the requirements, wherein, when the tool changing center C of the tool changing arm A in the tool loading position is in the expected position, the above-mentioned reference gap is formed between the bottom of the groove G and the top of the flange F. The expected position here means that when the tool changing center C of the tool changing arm A in the tool loading position is in the expected position, it indicates that the position of the tool changing center C is correct, or in this case the tool changing arm A can accurately install the tool to the spindle of the CNC machine tool, or there is no fault in the automatic tool changing mechanism M.

[0035] In this way, through the mutual cooperation of the flange F and the groove G between the simulated shaft 60 and the tool change arm A, the platform 1 can determine whether the tool change arm A has been rotated to the required angle. When the tool change arm A is rotated to the tool loading position, the groove G is partially inserted by the flange F to form a physical fit. This design enables the platform to detect the angular position of the tool change arm A with high precision. By measuring the actual gap AC between the bottom of the groove G and the top of the flange F, the measuring unit 70 can provide accurate data on the concentricity of the tool change center C of the tool change arm A and the simulated shaft 60. This measurement can not only determine whether the tool change arm has reached the desired tool loading position, but also ensure the precise alignment of the tool change center, which is crucial for tool changing accuracy. The judgment unit 50 can automatically determine whether the position and concentricity of the tool change arm A meet the requirements based on the difference between the actual gap AC and the reference gap. If the difference is greater than the set value, the judgment unit will diagnose that the concentricity of the tool change center C of the tool change arm A and the simulated shaft 60 does not meet the requirements, indicating a possible fault or inaccuracy.

[0036] In the preferred embodiment of the present invention, see Figure 3 The simulation shaft 60 is fixed to the base 10 through a retractable rod 61 so that the automatic tool changing mechanism M of tool magazines TS of different specifications can be tested.

[0037] In the preferred embodiment of the present invention, see Figure 5 The base 10 may include a base 11, a vertical support 12 disposed on the base 11, and a horizontal support 13 disposed on the vertical support 12, and the platform 1 also includes:

[0038] An electric control cabinet 80 is disposed above the horizontal support 13, wherein the electric control cabinet 80 is provided with an operation interface 81;

[0039] A cable trough 90, an air pipe and an oil pipe trough 110 are arranged above the electric control cabinet 80;

[0040] An expansion module 120 of the operation interface 81 disposed below the horizontal support 13;

[0041] The fixing mechanism 20 includes a mounting bracket 21 and a mounting plate 22 . The mounting bracket 21 is connected to the transverse bracket 13 and is located above the transverse bracket 13 . The mounting plate 22 is disposed on the mounting bracket 21 .

[0042] In the preferred embodiment of the present utility model, still refer to Figure 5 A triangular reinforcement plate 130 may be installed at the intersection of the base 11 and the vertical bracket 12 .

[0043] In the preferred embodiment of the present invention, see Figure 6 The platform 1 may further include an air pipe 140 disposed in the air pipe and oil pipe groove 110, which may be connected to the solenoid valve V of the cylinder of the tool magazine TS so as to operate the cylinder through air pressure.

[0044] In the preferred embodiment of the present utility model, still refer to Figure 6 The platform 1 may further include an oil pipe 150 disposed in the air pipe and oil pipe groove 110, and the oil pipe may be connected to the oil filling port O of the automatic tool changing mechanism M so as to operate the automatic tool changing mechanism M through oil pressure.

[0045] In the preferred embodiment of the present invention, see Figure 7 The mounting plate 22 may be provided with a positioning groove 220 and a plurality of connecting holes 221 for disassembling and assembling the tool magazine TS.

[0046] In the preferred embodiment of the present invention, see Figure 8 The operation interface 81 may be provided with a variety of detection switch buttons 810 and a variety of signal warning lights 811 .

[0047] Specifically, the detection switch button 810 includes a sensor signal switching button, a power selection button, a tool magazine forward and reverse button, automatic and manual buttons, an ATC switch button, etc. The signal alarm light 811 mainly includes three aspects: tool magazine cam fault alarm, cylinder fault alarm, and ATC fault alarm. In the platform 1 of the utility model, the above three fault alarm signals can be further subdivided. For example, the cylinder fault can be divided into a cylinder advance fault and a cylinder retraction fault, and the ATC fault can be subdivided into ATC brake, origin, and tool buckle faults, and a corresponding alarm light can be set for each subdivided fault.

[0048] In the preferred embodiment of the present invention, see Fig. 9 The tops of the cable trough 90, the air pipe and the oil pipe trough 110 can be processed with baffles B extending inwards.

[0049] It should be noted that the technical solutions described in the embodiments of the present utility model can be combined arbitrarily without conflict.

[0050] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A platform for testing the automatic tool changing mechanism of a tool magazine, characterized in that: The platform includes: Pedestal; A plurality of fixing mechanisms are arranged on the base, each fixing mechanism is used to fix the tool magazine to the base; three micrometers corresponding to each fixing mechanism, the three micrometers being arranged to remain fixed relative to the base, wherein when the tool changing arm of the automatic tool changing mechanism rotates about the rotation axis to switch from the tool taking position to the tool loading position, the positioning surface of the tool changing arm presses against the corresponding three micrometers to produce three actual readings; a calculation unit for calculating actual angles between actual planes determined by the three actual readings and reference planes determined by three reference readings, wherein when the positioning surface of the tool change arm in the tool loading position is in a desired plane, the corresponding three dial indicators are pressed against and produce the three reference readings; A determination unit is used to determine that the spatial orientation of the positioning surface of the tool changing arm in the tool mounting position does not meet the requirements when the actual angle is greater than a threshold angle.

2. The platform according to claim 1, characterized in that The platform also includes: a simulation shaft corresponding to each fixing mechanism, the simulation shaft being fixedly arranged on the base to simulate a spindle of a numerically controlled machine tool, wherein a flange is formed on one of the simulation shaft and the tool changing arm, a groove is formed on the other of the simulation shaft and the tool changing arm, and wherein, in the tool loading position, the groove is partially inserted by the flange; a measuring unit for measuring an actual gap between a bottom of the groove and a top of the flange; The determination unit is further configured to determine that the concentricity between the tool changing center of the tool changing arm in the tool loading position and the simulated axis does not meet the requirements when the difference between the actual gap and the reference gap is greater than a set value, wherein when the tool changing center of the tool changing arm in the tool loading position is in an expected position, the reference gap is formed between the bottom of the groove and the flange.

3. The platform according to claim 2, characterized in that: The simulation axis is fixed to the base through a telescopic rod, so that the automatic tool changing mechanism of tool magazines of different specifications can be tested.

4. The platform according to any one of claims 1 to 3, characterized in that The base includes a base, a vertical support arranged on the base, and a horizontal support arranged on the vertical support, and the platform also includes: An electric control cabinet is arranged above the horizontal support, wherein the electric control cabinet is provided with an operation interface; Cable troughs, air pipes and oil pipe troughs are arranged above the electric control cabinet; An expansion module of the operation interface disposed below the horizontal support; Wherein, the fixing mechanism comprises a mounting bracket and a mounting plate, wherein the mounting bracket is connected to the transverse bracket and is located above the transverse bracket, and the mounting plate is arranged on the mounting bracket.

5. The platform according to claim 4, characterized in that A triangular reinforcement plate is installed at the intersection of the base and the vertical bracket.

6. The platform according to claim 4, characterized in that The platform also includes an air pipe arranged in the air pipe and oil pipe groove, and the air pipe is connected to the electromagnetic valve of the cylinder of the tool magazine so as to operate the cylinder through air pressure.

7. The platform according to claim 4, characterized in that The platform further comprises an oil pipe arranged in the air pipe and the oil pipe groove, and the oil pipe is connected to the oil filling port of the automatic tool changing mechanism so as to operate the automatic tool changing mechanism through oil pressure.

8. The platform according to claim 4, characterized in that The mounting plate is provided with a positioning groove and a plurality of connecting holes for disassembling and assembling the tool magazine.

9. The platform according to claim 4, characterized in that: The operation interface is provided with a variety of detection switch buttons and a variety of signal alarm lights.

10. The platform according to claim 4, characterized in that The tops of the cable trough, the air pipe and the oil pipe trough are all processed with baffles extending inwards.

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