Clamping detection device and machine tool

Abstract

The utility model relates to the field of machine tools, and discloses a clamping detection device and a machine tool, the clamping detection device comprises a first electromagnetic valve, a first pipeline, a second pipeline, a switching valve, a third pipeline and a clamp, the first pipeline is connected with the first electromagnetic valve, the second pipeline is connected with the first electromagnetic valve, and a first air pressure detection piece is installed on the first pipeline or the second pipeline; the switching valve is connected with the first pipeline and the second pipeline, the third pipeline is connected with the switching valve, the clamp is provided with a first air port, and the first air port is communicated with the third pipeline. The first pipeline is communicated with the third pipeline, gas can enter the clamp through the third pipeline, and whether the machine tool measuring head is clamped or not at the moment is judged by detecting whether the gas pressure is changed or not through the first gas pressure detection piece on the first pipeline; in addition, before the measuring head is clamped, air can be blown to the clamp through a channel formed by the second pipeline and the third pipeline, dust particles possibly existing in the clamp are blown away, and air leakage during clamping of the measuring head is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of machine tool probe installation, and in particular to a clamping detection device and a machine tool. BACKGROUND

[0002] In modern equipment manufacturing industry, five-axis machine tool probe system plays a vital role, especially in realizing high-precision part processing. Although the traditional probe installation method has certain guarantee in precision, it still has deficiencies in clamping and detection functions. Especially in the application scene of high-precision machine tools, any slight position change may have a significant impact on the accuracy of the coordinate system, and thus affect the machining precision of the parts.

[0003] In the prior art, the position stability and cleanliness detection of the clamped probe are problems to be solved. If the position of the probe deviates during clamping, it will directly lead to inaccurate establishment of the coordinate system, thereby affecting the subsequent machining precision. In addition, if there are dust particles in the probe, it will also adversely affect the measurement accuracy. CONTENT OF THE INVENTION

[0004] Therefore, the purpose of the present application is to overcome the deficiencies in the prior art and provide a clamping detection device and a machine tool.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] The present application provides:

[0007] A clamping detection device, comprising:

[0008] A first electromagnetic valve;

[0009] A first pipeline connected with the first electromagnetic valve;

[0010] A second pipeline connected with the first electromagnetic valve, and a first air pressure detection member is installed on the first pipeline or the second pipeline;

[0011] A switching valve connected with the first pipeline and the second pipeline;

[0012] A third pipeline connected with the switching valve, and the switching valve is used to switch and deliver the gas from the first pipeline or the second pipeline to the third pipeline;

[0013] A clamp having a first air port in communication with the third pipeline.

[0014] Further, the first electromagnetic valve has a first gas outlet and a second gas outlet, the first pipeline is communicated with the first gas outlet, and the second pipeline is communicated with the second gas outlet.

[0015] Further, a pressure reducing valve is installed on the first pipeline or the second pipeline, and the first gas pressure detecting element is located on the same gas path as the pressure reducing valve.

[0016] Further, the switching valve has a first gas inlet, a second gas inlet and a third gas outlet, the first gas inlet is communicated with the end of the first pipeline away from the first electromagnetic valve, the second gas inlet is communicated with the end of the second pipeline away from the first electromagnetic valve, and the third gas outlet is communicated with the end of the third pipeline away from the clamp.

[0017] Further, the switching valve is a shuttle valve.

[0018] Further, the first electromagnetic valve has a first gas source port, and the first electromagnetic valve is used to communicate or disconnect the first gas outlet with the first gas outlet, and to communicate or disconnect the first gas source port with the second gas outlet.

[0019] Further, the clamping detection device further comprises a second electromagnetic valve, the second electromagnetic valve is connected with a fourth pipeline, the clamp has a second gas port, and the end of the fourth pipeline away from the second electromagnetic valve is communicated with the second gas port.

[0020] Further, a second gas pressure detecting element is installed on the fourth pipeline.

[0021] Further, the second electromagnetic valve has a second gas source port, and the second electromagnetic valve is used to control the second gas source port to communicate or disconnect with the fourth pipeline.

[0022] The application also provides a machine tool comprising the clamping detection device.

[0023] The application communicates the gas inlet end of the first pipeline with the external gas source through the first electromagnetic valve, so that the gas enters the switching valve through the first pipeline, the first pipeline is communicated with the third pipeline, the gas enters the clamp through the third pipeline, and the change of the gas pressure is detected through the first gas pressure detecting element on the first pipeline, so that whether the machine tool probe is clamped at this time is judged, and the gas path formed by the second pipeline and the third pipeline can also be used to blow the clamp before clamping the probe, so that the dust particles in the clamp can be blown away, and air leakage of the probe during clamping is prevented.

[0024] In order to make the above-mentioned purposes, characteristics and advantages of the application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some of the embodiments of the present application, and therefore should not be considered as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0026] Figure 1 The overall gas path schematic diagram of the clamping detection device of the present application is shown.

[0027] Main element symbol explanation: 100 - first electromagnetic valve; 1010 - first gas outlet; 1020 - second gas outlet; 1030 - first gas source port; 200 - first pipeline; 300 - second pipeline; 400 - switching valve; 410 - first gas inlet; 420 - second gas inlet; 430 - third gas outlet; 500 - third pipeline; 600 - clamp; 700 - first air pressure detection piece; 800 - pressure reducing valve; 900 - second electromagnetic valve; 910 - second gas source port; 1000 - fourth pipeline; 1100 - second air pressure detection piece. DETAILED DESCRIPTION

[0028] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0029] 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", "axial", "radial", "circumferential" and the like 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, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0030] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0031] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection", "fixed", and the like, should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0032] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0033] The machine tool probe is used for precision detection of parts. If the position of the probe deviates during installation with the machine tool, the coordinate system will be established inaccurately. Therefore, it is necessary to detect whether the position deviates or whether the clamp is tightened after clamping the probe.

[0034] The clamping detection device provided by the embodiments of the present application includes a first electromagnetic valve 100, a first pipeline 200, a second pipeline 300, a switching valve 400, a third pipeline 500, and a clamp 600.

[0035] In some embodiments, the first pipeline 200 is connected with the first electromagnetic valve 100, the second pipeline 300 is connected with the first electromagnetic valve 100, a first gas pressure detection member 700 is installed on the first pipeline 200 or the second pipeline 300, the switching valve 400 is connected with the first pipeline 200 and the second pipeline 300, the third pipeline 500 is connected with the switching valve 400, the switching valve 400 is used for switching and conveying the gas from the first pipeline 200 or the second pipeline 300 to the third pipeline 500, and the clamp 600 has a first gas port in communication with the third pipeline 500.

[0036] In one embodiment, it can be understood that the clamp 600 can use gas pressure as a power source to clamp and fix the probe (not shown in the figure). It can be known that the clamp 600 is a pneumatic clamp, and the specific clamp type can be selected and designed according to the type and model of the probe.

[0037] Specifically, the first gas pressure detecting member 700 is installed on the first pipeline 200, so as to detect the gas pressure in the gas path communicated between the first pipeline 200 and the third pipeline 500.

[0038] Further, the clamp 600 has a first gas port and a second gas port, the first gas port and the second gas port are communicated, the first gas port and the second gas port are connected with the inside of the clamp 600, the first gas port is used for blowing cleaning and air tightness detection of the clamp 600, and the structure can refer to a three-way structure.

[0039] Referring to Figure 1 When the clamp 600 finishes clamping the opposite side head, the first pipeline 200 is communicated with the external gas source through the first electromagnetic valve 100, the gas enters the switching valve 400 through the first pipeline 200, the first pipeline 200 is communicated with the third pipeline 500 through the switching valve 400, the gas pressure value in the gas path communicated with the clamp 600 is detected through the first gas pressure detecting member 700, and whether the probe is clamped is judged by observing whether the first gas pressure detecting member 700 changes. It can be understood that if the value of the first gas pressure detecting member 700 does not change, it means that the gas does not leak, and at this time it can be judged that the clamp 600 completes the clamping of the probe; on the contrary, if the value of the first gas pressure detecting member 700 changes, it means that the gas leaks, and it can be understood that the gas leaks at the clamping position of the probe and the clamp 600, and at this time it can be judged that the clamp 600 does not complete the clamping of the probe, and the clamping operation needs to be re-performed.

[0040] Further, if it is judged that the clamp 600 does not complete the clamping of the probe, the clamp 600 needs to be released first, then the second pipeline 300 is communicated with the external gas source through the first electromagnetic valve 100, the gas enters the switching valve 400 through the second pipeline 300, the switching valve 400 communicates the second pipeline 300 with the third pipeline 500 at this time, the gas enters the clamp 600 through the gas path formed by the second pipeline 300 and the third pipeline 500, so as to blow the dust particles and the like possibly existing at the clamping position of the clamp 600, then the probe is clamped by the clamp 600, and whether the first gas pressure detecting member 700 changes is observed again.

[0041] The first electromagnetic valve 100 has a first gas outlet 1010 and a second gas outlet 1020, the first pipeline 200 is communicated with the first gas outlet 1010, and the second pipeline 300 is communicated with the second gas outlet 1020.

[0042] In one embodiment, the first electromagnetic valve 100 has two gas outlets, i.e. a first gas outlet 1010 and a second gas outlet 1020, the first gas outlet 1010 is in communication with the first pipeline 200, and the second gas outlet 1020 is in communication with the second pipeline 300. When the first electromagnetic valve 100 makes the external gas source communicate with the first gas outlet 1010, the gas will enter the first pipeline 200 through the first gas outlet 1010. Correspondingly, when the first electromagnetic valve 100 makes the external gas source communicate with the second gas outlet 1020, the gas will enter the second pipeline 300 through the second gas outlet 1020.

[0043] In the embodiment, the first electromagnetic valve 100 is a three-position five-way electromagnetic valve.

[0044] Further, the first electromagnetic valve 100 also has a first gas source port 1030, and the first electromagnetic valve 100 is used to make the first gas outlet 1010 communicate with or disconnect from the first gas outlet 1010, and to make the first gas source port 1030 communicate with or disconnect from the second gas outlet 1020.

[0045] Please refer to Figure 1 The first gas source port 1030 is in communication with the external gas pipeline, and the first electromagnetic valve 100 can control the first gas source port 1030 to communicate with or disconnect from the first gas outlet 1010 or the second gas outlet 1020. It can be understood that the first electromagnetic valve 100 can make the first gas source port 1030 disconnect from the first gas outlet 1010 and the second gas outlet 1020. At this time, the gas channel from the outside cannot enter the first gas outlet 1010 or the second gas outlet 1020 through the first gas source port 1030, i.e. the first electromagnetic valve 100 plays a role of switching gas circuit.

[0046] The first pipeline 200 or the second pipeline 300 is provided with a pressure reducing valve 800, and the first gas pressure detection member 700 and the pressure reducing valve 800 are located on the same gas circuit.

[0047] Please continue to refer to Figure 1 In one embodiment, the first gas pressure detection member 700 and the pressure reducing valve 800 are located on the same gas circuit, the first gas pressure detection member 700 and the pressure reducing valve 800 are installed on the first pipeline 200, and the pressure reducing valve 800 is located between the first gas pressure detection member 700 and the switching valve 400.

[0048] It can be understood that the pressure reducing valve 800 can receive high pressure gas input and reduce the gas pressure to the required low pressure level through its internal mechanism, and can keep the outlet pressure stable, even if the inlet pressure changes, the outlet pressure can be kept within the set range through its adjustment mechanism, when the internal pressure of the system is too high, the pressure reducing valve 800 can automatically reduce the opening of the valve to limit the flow of gas, thereby preventing system damage or safety accidents caused by excessive pressure.

[0049] The switching valve 400 has a first gas inlet port 410, a second gas inlet port 420 and a third gas outlet port 430, the first gas inlet port 410 is communicated with the end of the first pipeline 200 away from the first electromagnetic valve 100, the second gas inlet port 420 is communicated with the end of the second pipeline 300 away from the first electromagnetic valve 100, and the third gas outlet port 430 is communicated with the end of the third pipeline 500 away from the clamp 600.

[0050] In order to automatically switch the communication and disconnection of the third pipeline 500 with the first pipeline 200 and the second pipeline 300, the switching valve 400 is used for switching, specifically, when the first pipeline 200 needs to be communicated with the third pipeline 500 to clamp the clamp 600 for detection, the switching valve 400 communicates the first gas inlet port 410 with the third gas outlet port 430, at this time the second pipeline 300 is disconnected with the third pipeline 500, and the gas enters the third pipeline 500 through the passage formed by the first pipeline 200, the first gas inlet port 410 and the third gas outlet port 430; Similarly, when the second pipeline 300 needs to be communicated with the third pipeline 500 to clean the clamping position of the clamp 600, the switching valve 400 controls the second gas inlet port 420 to communicate with the third gas outlet port 430, and the gas enters the third pipeline 500 through the passage formed by the second pipeline 300, the second gas inlet port 420 and the third gas outlet port 430, and then enters the clamp 600 to clean it.

[0051] Further, the switching valve 400 is a shuttle valve.

[0052] In the embodiment, the first electromagnetic valve 100 also has an exhaust port. It can be understood that when the first electromagnetic valve 100 makes the first gas source port 1030 communicate with the first gas outlet port 1010, at this time, the second gas outlet port 1020 communicates with the exhaust port, that is, at this time, the gas pressure in the first pipeline 200 is greater than the gas pressure in the second pipeline 300, according to the characteristics of the shuttle valve, at this time, the gas pressure at the position of the first gas inlet port 410 is greater than the gas pressure at the position of the second gas inlet port 420, so that the first gas inlet port 410 communicates with the third gas outlet port 430, and the first pipeline 200 communicates with the third pipeline 500. Similarly, when the second gas outlet port 1020 communicates with the first gas source port 1030, the first gas outlet port 1010 communicates with the exhaust port, and the gas pressure in the second pipeline 300 is greater than the gas pressure in the first pipeline 200, that is, the gas pressure at the position of the second gas inlet port 420 is greater than the gas pressure at the position of the first gas inlet port 410, so that the second gas inlet port 420 communicates with the third gas outlet port 430, and the second pipeline 300 communicates with the third pipeline 500.

[0053] The clamping detection device also includes a second electromagnetic valve 900, the fourth pipeline 1000 is connected to the second electromagnetic valve 900, the clamp 600 has a second gas port, and the end of the fourth pipeline 1000 away from the second electromagnetic valve 900 communicates with the second gas port; the second electromagnetic valve 900 has a second gas source port 910, and the second electromagnetic valve 900 is used to control the second gas source port 910 to communicate or disconnect with the fourth pipeline 1000.

[0054] Please continue to refer to Figure 1 As shown, the first electromagnetic valve 100 and the second electromagnetic valve 900 are connected to the same gas source pipeline, that is, the first gas source port 1030 and the second gas source port 910 are connected to the same gas pipeline, when it is needed to clamp the probe by the clamp 600, at this time, the first gas source port 1030 is disconnected with the first gas outlet port 1010 and the second gas outlet port 1020, the second electromagnetic valve 900 makes the second gas source port 910 communicate with the fourth pipeline 1000, and the gas entering the fourth pipeline 1000 enters the clamp 600 through the second gas port to realize clamping of the probe.

[0055] Further, after clamping, in order to verify whether the clamping is completed, the first gas source port 1030 can be communicated with the first gas outlet port 1010 by the first electromagnetic valve 100, and the gas enters the first pipeline 200 and the third pipeline 500. Since the first gas port and the second gas port are communicated, the gas pressure in the first pipeline 200, the third pipeline 500 and the fourth pipeline 1000 is the same at this time. The first gas pressure detection member 700 detects the gas pressure at this time, and observes whether the value of the first gas pressure detection member 700 changes. If the value changes, it means that the clamping is not completed. At this time, the second pipeline 300 can be communicated with the third pipeline 500 to blow gas to the clamp 600, so as to blow away the possible particles and dust, and prevent the gas from leaking when the probe head is clamped.

[0056] In one embodiment, the second electromagnetic valve 900 also has an exhaust port. When it is necessary to release the clamping of the probe head, the first gas source port 1030 is disconnected with the first gas outlet port 1010 and the second gas outlet port 1020, and then the second electromagnetic valve 900 communicates the second gas pressure detection member 1100 with the exhaust port, so that the gas is discharged from the exhaust port, thereby releasing the clamping of the probe head.

[0057] The fourth pipeline 1000 is provided with the second gas pressure detection member 1100.

[0058] In the embodiment, the second gas pressure detection member 1100 on the fourth pipeline 1000 can also detect the gas pressure in the fourth pipeline 1000. Whether the value of the second gas pressure detection member 1100 changes can also determine whether the clamping of the probe head is completed.

[0059] In the embodiment, the first gas pressure detection member 700 and the second gas pressure detection member 1100 are both gas pressure detection tables.

[0060] The application also provides a machine tool. Specifically, the machine tool comprises the clamping detection device described above. For example, the machine tool can be a five-axis machine tool. It can be understood that the machine tool has the technical effects of the clamping detection device described above. The specific technical effects will not be described in detail here, and the contents described above can be referred to.

[0061] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0062] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A clamping detection device, characterized in that, include: First solenoid valve (100); The first pipeline (200) is connected to the first solenoid valve (100); The second pipeline (300) is connected to the first solenoid valve (100), and a first air pressure detection device (700) is installed on the first pipeline (200) or the second pipeline (300). A switching valve (400) is connected to the first pipeline (200) and the second pipeline (300); A third pipeline (500) is connected to the switching valve (400), which is used to switch the gas from the first pipeline (200) or the second pipeline (300) to the third pipeline (500). The clamp (600) has a first air port, which is connected to the third pipeline (500).

2. The clamping detection device according to claim 1, characterized in that, The first solenoid valve (100) has a first air outlet (1010) and a second air outlet (1020), the first pipeline (200) is connected to the first air outlet (1010), and the second pipeline (300) is connected to the second air outlet (1020).

3. The clamping detection device according to claim 1, characterized in that, A pressure reducing valve (800) is installed on the first pipeline (200) or the second pipeline (300), and the first air pressure detection element (700) and the pressure reducing valve (800) are located on the same air line.

4. The clamping detection device according to claim 1, characterized in that, The switching valve (400) has a first air inlet (410), a second air inlet (420), and a third air outlet (430). The first air inlet (410) is connected to the end of the first pipeline (200) away from the first solenoid valve (100). The second air inlet (420) is connected to the end of the second pipeline (300) away from the first solenoid valve (100). The third air outlet (430) is connected to the end of the third pipeline (500) away from the clamp (600).

5. The clamping detection device according to claim 1, characterized in that, The switching valve (400) is a shuttle valve.

6. The clamping detection device according to claim 2, characterized in that, The first solenoid valve (100) has a first air source port (1030), and the first solenoid valve (100) is used to connect or disconnect the first air outlet (1010) and the second air outlet (1020), and to connect or disconnect the first air source port (1030) and the second air outlet (1020).

7. The clamping detection device according to claim 1, characterized in that, The clamping detection device further includes a second solenoid valve (900), which is connected to a fourth pipeline (1000). The clamp (600) has a second air port, and the end of the fourth pipeline (1000) away from the second solenoid valve (900) is connected to the second air port.

8. The clamping detection device according to claim 7, characterized in that, The fourth pipeline (1000) is equipped with a second air pressure detection device (1100).

9. The clamping detection device according to claim 7, characterized in that, The second solenoid valve (900) has a second air source port (910), and the second solenoid valve (900) is used to control the connection or disconnection of the second air source port (910) with the fourth pipeline (1000).

10. A machine tool, characterized in that, Includes the clamping detection device as described in any one of claims 1 to 9.

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