Detection device

Abstract

The utility model provides a detection device which is suitable for a positioning tool, the positioning tool is used for positioning a workpiece to be positioned, and the detection device comprises a first cavity; the positioning piece has a positioning state in which the positioning piece is connected with the workpiece to be positioned and a separation state in which the positioning piece is separated from the workpiece to be positioned, the positioning piece is movably arranged in the first cavity so that the positioning piece can be switched between the positioning state and the separation state, and an air outlet communicated with the outside is formed in the positioning piece; the detection mechanism comprises a first air inlet channel and a second air inlet channel, so that when the positioning piece is in the positioning state, the first air inlet channel is communicated with the air outlet, and the second air inlet channel is disconnected from the air outlet; when the positioning piece is in a separated state, the second air inlet channel is communicated with the air outlet, and the first air inlet channel is disconnected from the air outlet; air is introduced into the first air inlet channel and the second air inlet channel, and air pressure in the first air inlet channel and the second air inlet channel is detected, so that whether the positioning piece is in a positioning state or a separation state is judged. According to the utility model, the problem of poor detection accuracy of a positioning detection mode in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining latch positioning, in particular to a detection device. Background Art

[0002] During the machining process of the product, a locating pin is provided on the locating surface of the tooling, and the positioning of the workpiece is achieved by inserting the locating pin into the locating hole of the workpiece to be processed; an air detection hole is added next to the locating pin, and a pressure sensor is provided in the air detection hole. When the locating pin is inserted into the locating hole, the locating surface of the tooling fits with the surface of the workpiece, and the air detection hole is closed by the workpiece, and the pressure change in the air detection hole is small. Otherwise, the pressure change in the air detection hole is large.

[0003] Therefore, the pressure change in the air inspection hole is used to detect whether the positioning surface of the tooling is fully fitted with the surface of the workpiece, that is, whether the tooling is properly positioned on the workpiece; however, this positioning detection method requires that the surface of the workpiece fully closes the air inspection hole. When the shape of the workpiece is irregular and the air inspection hole cannot be completely closed, there will be errors in the detection result of whether the tooling is properly positioned on the workpiece. Utility Model Content

[0004] The main purpose of the utility model is to provide a detection device to solve the problem of poor detection accuracy of the positioning detection method in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a detection device, which is suitable for a positioning tool, and the positioning tool is used to position a workpiece to be positioned. The detection device includes: a first cavity; a positioning member, the positioning member has a positioning state connected to the workpiece to be positioned and a separation state separated from the workpiece to be positioned, and the positioning member can be movably arranged in the first cavity to enable the positioning member to switch between the positioning state and the separation state, and the positioning member is provided with an air outlet connected to the outside; a detection mechanism, the detection mechanism includes a first air inlet channel and a second air inlet channel, so that when the positioning member is in the positioning state, the first air inlet channel is connected to the air outlet, and the second air inlet channel is disconnected from the air outlet; when the positioning member is in the separation state, the second air inlet channel is connected to the air outlet, and the first air inlet channel is disconnected from the air outlet; by ventilating the first air inlet channel and the second air inlet channel, and detecting the air pressure in the first air inlet channel and the second air inlet channel, it is possible to judge whether the positioning member is in the positioning state or the separation state.

[0006] Furthermore, the first air inlet channel and the second air inlet channel are arranged at intervals along the circumferential direction of the first cavity, and the positioning member is arranged to be reciprocatingly movable along a preset direction, and the preset direction is arranged parallel to the axial direction of the first cavity; wherein the first cavity is cylindrical.

[0007] Furthermore, the detection mechanism also includes a third air inlet channel arranged in the positioning member, one end of the third air inlet channel forms an air outlet, and the other end of the third air inlet channel is used to communicate with the first air inlet channel or the second air inlet channel.

[0008] Furthermore, the detection device also includes a connecting piece arranged in the first cavity, and the circumferential side wall of the connecting piece abuts against the cavity wall of the first cavity; the connecting piece has a guide groove extending along the axial direction of the first cavity, and the positioning piece can be movably inserted into the guide groove along the extension direction of the guide groove.

[0009] Furthermore, the connecting piece has a first annular groove and a second annular groove on the circumferential side wall, and the first annular groove and the second annular groove are both arranged to penetrate the groove wall of the guide groove in the radial direction of the first cavity, so that the first annular groove is used to connect the first air inlet channel and the third air inlet channel of the detection mechanism, and the second annular groove is used to connect the second air inlet channel and the third air inlet channel of the detection mechanism.

[0010] Furthermore, at least a portion of the circumferential side wall of the positioning member is recessed in a direction away from the connecting member, so that at least a portion of the circumferential side wall and the groove wall of the guide groove together form a gas delivery space, and a first connecting hole is provided on at least a portion of the circumferential side wall, and the two ends of the first connecting hole are respectively connected to the gas delivery space and the third air inlet channel; and / or, the gas delivery space is connected to the first annular groove or the second annular groove, so that the gas in the first annular groove or the second annular groove flows through the gas delivery space into the first connecting hole.

[0011] Further, the first air inlet channel includes a first air inlet channel section and a second air inlet channel section, two ends of the first air inlet channel section are respectively connected to an external air source and one end of the second air inlet channel section, and the other end of the second air inlet channel section is connected to the first annular groove; and / or, the second air inlet channel includes a third air inlet channel section and a fourth air inlet channel section, two ends of the third air inlet channel section are respectively connected to an external air source and one end of the fourth air inlet channel section, and the other end of the fourth air inlet channel section is connected to the second annular groove; and / or, the third air inlet channel includes a fifth air inlet channel section and a sixth air inlet channel section, two ends of the fifth air inlet channel section are respectively connected to the first connecting hole and one end of the sixth air inlet channel section, and the other end of the sixth air inlet channel section is used to form an air outlet.

[0012] Furthermore, the detection device also includes a first sealed cavity and a second sealed cavity arranged at intervals along a preset direction; the outer peripheral wall on one side of the positioning member and the cavity wall of the first cavity form the first sealed cavity, and the outer peripheral wall on the opposite side of the positioning member and the cavity wall of the first cavity form the second sealed cavity; by inputting a preset medium into the first sealed cavity and causing the preset medium in the second sealed cavity to flow out, or by inputting a preset medium into the second sealed cavity and causing the preset medium in the first sealed cavity to flow out, the positioning member is driven to move along a preset direction.

[0013] Furthermore, the detection device also includes a first medium flow channel and a second medium flow channel, the first medium flow channel is connected to the first sealed cavity so that the preset medium in the first medium flow channel flows into the first sealed cavity; the second medium flow channel is connected to the second sealed cavity so that the preset medium in the second medium flow channel flows into the second sealed cavity.

[0014] Furthermore, a limiting groove is provided at the end of the positioning member, and the limiting groove extends along the axial direction of the first cavity. The limiting groove has a first groove wall and a second groove wall arranged at intervals along its extending direction, and the second groove wall is arranged away from the air outlet relative to the first groove wall; the detection device also includes a limiting member, at least part of which is passed through the connecting member, and the end of the limiting member abuts against the second groove wall to limit the positioning member.

[0015] By applying the technical solution of the utility model, the detection device includes a first cavity, a positioning member and a detection mechanism, the positioning member is provided with an air outlet, and the detection mechanism includes a first air inlet channel and a second air inlet channel. By ventilating the first air inlet channel and the second air inlet channel and detecting the air pressure in the first air inlet channel and the second air inlet channel, it is determined whether the positioning member is in a positioned state or a separated state, so that the positioning detection of the positioning member no longer depends on the pressure change in the air detection hole, and the positioning detection accuracy of the positioning member is improved, thereby solving the problem of poor detection accuracy of the positioning detection method in the prior art. At the same time, the detection device of the present application has the advantages of simple and compact structure, and realizes the positioning detection of the positioning member by using the airway instead of electronic components, and no longer needs to connect wires, avoiding the difficulty of wiring inside the positioning tooling, and improving the detection convenience of the detection device.

[0016] By ventilating the first air inlet channel and the second air inlet channel and detecting the air pressure in the first air inlet channel and the second air inlet channel, when the air pressure in the first air inlet channel is greater than the preset pressure and the air pressure in the second air inlet channel is less than the preset pressure, it can be judged that the second air inlet channel is connected to the air outlet, and the first air inlet channel is disconnected from the air outlet, that is, the positioning member is in a separated state; when the air pressure in the first air inlet channel is less than the preset pressure and the air pressure in the second air inlet channel is greater than the preset pressure, it can be judged that the second air inlet channel is disconnected from the air outlet, and the first air inlet channel is connected to the air outlet, that is, the positioning member is in a positioned state. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 A schematic structural diagram of a first angle (including a first air intake passage and a second air intake passage) of an embodiment of a detection device according to the utility model is shown;

[0019] Figure 2 A schematic structural diagram showing a second angle of an embodiment of a detection device according to the utility model (including a first medium flow channel and a second medium flow channel);

[0020] Figure 3 A schematic structural diagram of the detection device according to the embodiment of the utility model from a third angle (including the water outlet pipe) is shown.

[0021] The above drawings include the following reference numerals:

[0022] 1. air outlet; 11. first connecting hole; 6. first cavity; 8. second cavity; 10. positioning member; 20. detection mechanism; 21. first air inlet channel; 22. second air inlet channel; 23. third air inlet channel; 30. connecting member; 31. guide groove; 32. first annular groove; 33. second annular groove; 35. air delivery space; 211. first air inlet channel section; 212. second air inlet channel section; 221. third air inlet channel section; 222. fourth air inlet channel section; 7 1. First sealing cavity; 72. Second sealing cavity; 51. First medium flow channel; 52. Second medium flow channel; 114. Limiting groove; 1141. Second groove wall; 115. Limiting member; 80. First shell; 90. Second shell; 81. First air pipe; 91. Second air pipe; 17. Liquid containing cavity; 96. Water outlet pipe; 19. Annular protrusion; 111. First positioning portion; 112. Second positioning portion; 113. Third positioning portion; 92. O-ring; 93. Gray ring. DETAILED DESCRIPTION

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0025] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0026] Please refer to Figures 1 to 3 The utility model provides a detection device, which is suitable for a positioning tool, and the positioning tool is used to position a workpiece to be positioned. The detection device includes: a first cavity 6; a positioning member 10, the positioning member 10 has a positioning state connected with the workpiece to be positioned and a separation state separated from the workpiece to be positioned, the positioning member 10 can be movably arranged in the first cavity 6, so that the positioning member 10 can switch between the positioning state and the separation state, and the positioning member 10 is provided with an air outlet 1 connected to the outside; a detection mechanism 20, the detection mechanism 20 includes a first air inlet Channel 21 and the second air inlet channel 22, so that when the positioning member 10 is in the positioning state, the first air inlet channel 21 is connected with the air outlet 1, and the second air inlet channel 22 is disconnected from the air outlet 1; when the positioning member 10 is in the separation state, the second air inlet channel 22 is connected with the air outlet 1, and the first air inlet channel 21 is disconnected from the air outlet 1; by ventilating the first air inlet channel 21 and the second air inlet channel 22, and detecting the air pressure in the first air inlet channel 21 and the second air inlet channel 22, it can be judged whether the positioning member 10 is in the positioning state or the separation state.

[0027] The detection device of the utility model includes a first cavity 6, a positioning member 10 and a detection mechanism 20. The positioning member 10 is provided with an air outlet 1. The detection mechanism 20 includes a first air inlet channel 21 and a second air inlet channel 22. By ventilating the first air inlet channel 21 and the second air inlet channel 22 and detecting the air pressure in the first air inlet channel 21 and the second air inlet channel 22, it is determined whether the positioning member 10 is in a positioned state or a separated state, so that the positioning detection of the positioning member 10 no longer depends on the pressure change in the air detection hole, and the positioning detection accuracy of the positioning member 10 is improved, thereby solving the problem of poor detection accuracy of the positioning detection method in the prior art. At the same time, the detection device of the present application has the advantages of simple and compact structure, and realizes the positioning detection of the positioning member 10 by using the airway instead of electronic components, and no longer needs to connect wires, avoiding the difficulty of wiring inside the positioning tooling, and improving the detection convenience of the detection device.

[0028] By ventilating the first air inlet channel 21 and the second air inlet channel 22 and detecting the air pressure in the first air inlet channel 21 and the second air inlet channel 22, when the air pressure in the first air inlet channel 21 is greater than the preset pressure and the air pressure in the second air inlet channel 22 is less than the preset pressure, it can be judged that the second air inlet channel 22 is connected with the air outlet 1, and the first air inlet channel 21 is disconnected from the air outlet 1, that is, the positioning member 10 is in a separated state; when the air pressure in the first air inlet channel 21 is less than the preset pressure and the air pressure in the second air inlet channel 22 is greater than the preset pressure, it can be judged that the second air inlet channel 22 is disconnected from the air outlet 1, and the first air inlet channel 21 is connected with the air outlet 1, that is, the positioning member 10 is in a positioned state.

[0029] In this embodiment, if Figure 1 As shown, the first air inlet channel 21 and the second air inlet channel 22 are arranged at intervals along the circumferential direction of the first cavity 6, and the positioning member 10 is arranged to be reciprocatingly movable along a preset direction, and the preset direction is arranged parallel to the axial direction of the first cavity 6; wherein the first cavity 6 is cylindrical.

[0030] Specifically, when the positioning member 10 is arranged to be reciprocatingly movable along a preset direction, the positioning member 10 at different positions inside the first cavity 6 can be connected to the first air inlet channel 21 or the second air inlet channel 22, thereby ensuring that it is possible to accurately judge whether the positioning member 10 is in a separated state or a positioned state based on the air pressure in the first air inlet channel 21 and the second air inlet channel 22.

[0031] In this embodiment, if Figure 1 As shown, the detection mechanism 20 also includes a third air inlet channel 23 disposed in the positioning member 10 , one end of the third air inlet channel 23 forms an air outlet 1 , and the other end of the third air inlet channel 23 is used to communicate with the first air inlet channel 21 or the second air inlet channel 22 .

[0032] Specifically, the third air inlet channel 23 is used to connect the first air inlet channel 21 or the second air inlet channel 22 and the air outlet 1, so that when the positioning member 10 is in a positioned state, the gas in the first air inlet channel 21 can be smoothly discharged from the air outlet 1 through the third air inlet channel 23; when the positioning member 10 is in a separated state, the gas in the second air inlet channel 22 can be smoothly discharged from the air outlet 1 through the third air inlet channel 23, thereby ensuring the detection reliability of the detection device.

[0033] In this embodiment, if Figure 1 As shown, the detection device also includes a connecting member 30 arranged in the first cavity 6, and the circumferential side wall of the connecting member 30 abuts against the cavity wall of the first cavity 6; the connecting member 30 has a guide groove 31 extending along the axial direction of the first cavity 6, and the positioning member 10 is movably arranged in the guide groove 31 along the extension direction of the guide groove 31.

[0034] Specifically, the guide groove 31 is used to guide the positioning member 10, ensuring that the positioning member 10 can only reciprocate along a preset direction, i.e., the axial direction of the first cavity 6, ensuring that the positioning member 10 can smoothly switch between the positioning state and the separation state, thereby ensuring that when the positioning member 10 is in different states, the air pressure in the first air inlet channel 21 and the second air inlet channel 22 are different, further ensuring the detection reliability of the detection device.

[0035] In this embodiment, if Figure 1 As shown, the circumferential side wall of the connecting member 30 is provided with a first annular groove 32 and a second annular groove 33, and the first annular groove 32 and the second annular groove 33 are both arranged to penetrate the groove wall of the guide groove 31 along the radial direction of the first cavity 6, so that the first annular groove 32 is used to connect the first air inlet channel 21 and the third air inlet channel 23 of the detection mechanism 20, and the second annular groove 33 is used to connect the second air inlet channel 22 and the third air inlet channel 23 of the detection mechanism 20.

[0036] Specifically, such a configuration enables, when the positioning member 10 is in a positioned state, the gas in the first air inlet channel 21 to enter the third air inlet channel 23 through the first annular groove 32 and then be smoothly discharged from the air outlet 1; and enables, when the positioning member 10 is in a separated state, the gas in the second air inlet channel 22 to enter the third air inlet channel 23 through the second annular groove 33 and then be smoothly discharged from the air outlet 1, thereby ensuring the detection reliability of the detection device.

[0037] In this embodiment, if Figure 1As shown, at least part of the circumferential side wall of the positioning member 10 is recessed in the radial direction of the first cavity 6, so that at least part of the circumferential side wall and the groove wall of the guide groove 31 together form a gas delivery space 35, and a first connecting hole 11 is provided on at least part of the circumferential side wall, and the two ends of the first connecting hole 11 are respectively connected to the gas delivery space 35 and the third air inlet channel 23; and / or, the gas delivery space 35 is connected to the first annular groove 32 or the second annular groove 33, so that the gas in the first annular groove 32 or the second annular groove 33 flows through the gas delivery space 35 and enters the first connecting hole 11.

[0038] Specifically, the gas delivery space 35 is configured to store part of the gas flowing in from the first annular groove 32 or the second annular groove 33, so as to avoid gas accumulation in the first annular groove 32 or the second annular groove 33 due to the small flow area of ​​the first connecting hole 11, resulting in too slow a gas flow rate and affecting the accuracy of air pressure measurement in the first air inlet channel 21 and the second air inlet channel 22.

[0039] Specifically, a second connecting hole and a third connecting hole are provided on the cavity wall of the first cavity 6 , the first annular groove 32 is connected to the first air inlet passage 21 through the second connecting hole, and the second annular groove 33 is connected to the second air inlet passage 22 through the third connecting hole.

[0040] In this embodiment, if Figure 1 As shown, the first air intake channel 21 includes a first air intake channel section 211 and a second air intake channel section 212, and the two ends of the first air intake channel section 211 are respectively connected to the external air source and one end of the second air intake channel section 212, and the other end of the second air intake channel section 212 is connected to the first annular groove 32; and / or, the second air intake channel 22 includes a third air intake channel section 221 and a fourth air intake channel section 222, and the two ends of the third air intake channel section 221 are respectively connected to the external air source and one end of the fourth air intake channel section 222, and the other end of the fourth air intake channel section 222 is connected to the second annular groove 33; and / or, the third air intake channel 23 includes a fifth air intake channel section and a sixth air intake channel section, and the two ends of the fifth air intake channel section are respectively connected to the first connecting hole 11 and one end of the sixth air intake channel section, and the other end of the sixth air intake channel section is used to form the air outlet 1.

[0041] Specifically, the first air intake channel segment 211, the sixth air intake channel segment and the third air intake channel segment 221 all extend along a preset direction, i.e., the axial direction of the first cavity 6, and the second air intake channel segment 212, the fifth air intake channel segment and the fourth air intake channel segment 222 all extend along the radial direction of the first cavity 6.

[0042] Specifically, Figure 1As shown, the detection device also includes a first shell 80 and a second shell 90. The second shell 90 is sleeved on the first shell 80 and forms a second cavity 8 with the first shell 80. The first shell 80 has a first cavity 6. The connecting piece 30 and the second shell 90 are sealed by an O-ring 92; the positioning piece 10 and the second shell 90 or the connecting piece 30 are sealed by a Gly ring 93.

[0043] Specifically, Figure 1 As shown, the detection device also includes a first gas pipe 81 and a second gas pipe 91, both of which are arranged in the second cavity 8. The first gas pipe 81 and the second gas pipe 91 are respectively arranged on both sides of the connecting piece 30. The first gas pipe 81 has a first air intake channel 21, and the second gas pipe 91 has a second air intake channel 22. The first ends of the first gas pipe 81 and the second gas pipe 91 are connected to an external gas source, and the second ends of the first gas pipe 81 and the second gas pipe 91 are connected to the first shell 80.

[0044] Specifically, Figure 3 As shown, a liquid chamber 17 is provided at one end of the positioning member 10 close to the workpiece to be positioned, and the detection device also includes a water outlet pipe 96 arranged in the second cavity 8, and the two ends of the water outlet pipe 96 are respectively connected to the outside and the liquid chamber 17, so that the cutting fluid and other liquids in the liquid chamber 17 can flow out from the water outlet pipe 96.

[0045] In this embodiment, if Figure 2 As shown, the detection device also includes a first sealed cavity 71 and a second sealed cavity 72 arranged at intervals along a preset direction; the outer peripheral wall on one side of the positioning member 10 and the cavity wall of the first cavity 6 form the first sealed cavity 71, and the outer peripheral wall on the opposite side of the positioning member 10 and the cavity wall of the first cavity 6 form the second sealed cavity 72; by inputting a preset medium into the first sealed cavity 71 and causing the preset medium in the second sealed cavity 72 to flow out, or by inputting a preset medium into the second sealed cavity 72 and causing the preset medium in the first sealed cavity 71 to flow out, the positioning member 10 is driven to move along a preset direction.

[0046] Specifically, the first sealed cavity 71 is arranged near the gas outlet 1 relative to the second sealed cavity 72, and an annular protrusion 19 is arranged on at least part of the circumferential side wall of the positioning member 10, and the circumferential side wall of the annular protrusion 19 abuts against the cavity wall of the first cavity 6, and the outer circumferential wall of the positioning member 10 above the annular protrusion 19 and the cavity wall of the first cavity 6 enclose the first sealed cavity 71, and the outer circumferential wall of the positioning member 10 below the annular protrusion 19 and the cavity wall of the first cavity 6 enclose the second sealed cavity 72. By inputting a preset medium into the first sealed cavity 71 and causing the preset medium in the second sealed cavity 72 to flow out, the positioning member 10 moves along a preset direction toward the direction close to the workpiece to be positioned, so that the positioning member switches from a separated state to a positioned state; by inputting a preset medium into the second sealed cavity 72 and causing the preset medium in the first sealed cavity 71 to flow out, the positioning member 10 moves along a preset direction toward the direction away from the workpiece to be positioned, so that the positioning member switches from a positioned state to a separated state, and the preset medium is used to drive the movement of the positioning member 10.

[0047] In this embodiment, if Figure 2 As shown, the detection device also includes a first medium flow channel 51 and a second medium flow channel 52. The first medium flow channel 51 is connected to the first sealed cavity 71 so that the preset medium in the first medium flow channel 51 flows into the first sealed cavity 71; the second medium flow channel 52 is connected to the second sealed cavity 72 so that the preset medium in the second medium flow channel 52 flows into the second sealed cavity 72.

[0048] Specifically, the first medium flow channel 51 is used to connect the external medium source and the first sealed cavity 71, and the second medium flow channel 52 is used to connect the external medium source and the second sealed cavity 72, ensuring that the preset medium flows smoothly into the first sealed cavity 71 or the second sealed cavity 72, and ensuring the smooth switching of the positioning member 10 between the positioning state and the separation state.

[0049] Specifically, the preset medium is hydraulic oil, and the external medium source is a hydraulic oil tank.

[0050] Specifically, the detection mechanism 20 also includes an air pressure sensor, which is arranged in the first air pipe 81 and the second air pipe 91 to detect the air pressure in the first air intake channel 21 and the second air intake channel 22, and convert the air pressure signal into an electrical signal and transmit it to the controller, so that the controller can control the opening and closing of the solenoid valve according to the detection result, and then control the first medium flow channel 51 and the second medium flow channel 52, and then control the movement of the positioning member 10. At the same time, converting the air pressure signal into an electrical signal provides conditions for subsequent automatic control.

[0051] In this embodiment, if Figure 1As shown, a limiting groove 114 is provided at the end of the positioning member 10, and the limiting groove 114 extends along the axial direction of the first cavity 6. The limiting groove 114 has a first groove wall and a second groove wall 1141 spaced apart along its extension direction, and the second groove wall 1141 is arranged away from the air outlet 1 relative to the first groove wall; the detection device also includes a limiting member 115, at least part of which is passed through the connecting member 30, and the end of the limiting member 115 abuts against the second groove wall 1141 to limit the positioning member 10. Such a setting can prevent the positioning member 10 from continuing to move in a preset direction away from the workpiece to be positioned after switching to the separation state, resulting in the separation of the positioning member 10 from the first cavity 6.

[0052] Specifically, Figure 1 As shown, the positioning member 10 includes a first positioning portion 111, a second positioning portion 112 and a third positioning portion 113 which are sequentially arranged along the axial direction thereof, and the axial cross-sectional areas of the third positioning portion 113, the first positioning portion 111 and the second positioning portion 112 gradually increase, a first connecting hole 11 is arranged on the circumferential side wall of the third positioning portion 113, and an annular protrusion 19 is arranged on the circumferential side wall of the second positioning portion 112, and the first positioning portion 111 is used for inserting and connecting with the workpiece to be positioned so that the positioning member 10 can position the workpiece to be positioned. The axial end face of the second positioning portion 112 abuts against the cavity wall of the first cavity 6 to limit the positioning member 10, so as to prevent the positioning member 10 from continuing to move in a preset direction toward the direction close to the workpiece to be positioned after switching to the positioning state, causing the positioning member 10 to impact the workpiece to be positioned.

[0053] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0054] The detection device of the present invention has a simple structure and is easy to install. It can be installed in an embedded manner on a positioning tool such as a hydraulic clamp, without taking up the space of the hydraulic clamp, thus facilitating the layout of the hydraulic clamp. The present application replaces electronic components with air ducts, and there is no need to connect wires, which helps to improve the measurement reliability of the detection device. The present application utilizes an air pressure sensor to convert an air detection signal into an electrical signal, which can satisfy the signal interaction between hydraulic clamps and equipment such as truss manipulators, laying the foundation for the subsequent realization of automatic loading of workpieces, automatic tightening and positioning, and in-place detection, thus meeting the needs of automatic processing and production.

[0055] The detection device of the utility model includes a first cavity 6, a positioning member 10 and a detection mechanism 20. The positioning member 10 is provided with an air outlet 1. The detection mechanism 20 includes a first air inlet channel 21 and a second air inlet channel 22. By ventilating the first air inlet channel 21 and the second air inlet channel 22 and detecting the air pressure in the first air inlet channel 21 and the second air inlet channel 22, it is determined whether the positioning member 10 is in a positioned state or a separated state, so that the positioning detection of the positioning member 10 no longer depends on the pressure change in the air detection hole, and the positioning detection accuracy of the positioning member 10 is improved, thereby solving the problem of poor detection accuracy of the positioning detection method in the prior art. At the same time, the detection device of the present application has the advantages of simple and compact structure, and realizes the positioning detection of the positioning member 10 by using the airway instead of electronic components, and no longer needs to connect wires, avoiding the difficulty of wiring inside the positioning tooling, and improving the detection convenience of the detection device.

[0056] By ventilating the first air inlet channel 21 and the second air inlet channel 22 and detecting the air pressure in the first air inlet channel 21 and the second air inlet channel 22, when the air pressure in the first air inlet channel 21 is greater than the preset pressure and the air pressure in the second air inlet channel 22 is less than the preset pressure, it can be judged that the second air inlet channel 22 is connected with the air outlet 1, and the first air inlet channel 21 is disconnected from the air outlet 1, that is, the positioning member 10 is in a separated state; when the air pressure in the first air inlet channel 21 is less than the preset pressure and the air pressure in the second air inlet channel 22 is greater than the preset pressure, it can be judged that the second air inlet channel 22 is disconnected from the air outlet 1, and the first air inlet channel 21 is connected with the air outlet 1, that is, the positioning member 10 is in a positioned state.

[0057] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0058] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0059] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A detection device, suitable for a positioning tool, wherein the positioning tool is used to position a workpiece to be positioned, characterized in that: The detection device comprises: A first cavity (6); a positioning member (10), the positioning member (10) having a positioning state in which the positioning member is connected to the workpiece to be positioned and a separation state in which the positioning member is separated from the workpiece to be positioned, the positioning member (10) being movably arranged in the first cavity (6) so that the positioning member (10) can switch between the positioning state and the separation state, and the positioning member (10) is provided with an air outlet (1) communicating with the outside; A detection mechanism (20), the detection mechanism (20) comprising a first air inlet channel (21) and a second air inlet channel (22), so that when the positioning member (10) is in the positioning state, the first air inlet channel (21) is connected to the air outlet (1), and the second air inlet channel (22) is disconnected from the air outlet (1); and when the positioning member (10) is in the separation state, the second air inlet channel (22) is connected to the air outlet (1), and the first air inlet channel (21) is disconnected from the air outlet (1); By ventilating the first air intake passage (21) and the second air intake passage (22), and detecting the air pressure in the first air intake passage (21) and the second air intake passage (22), it is determined whether the positioning member (10) is in the positioning state or the separation state.

2. The detection device according to claim 1, characterized in that: The first air inlet channel (21) and the second air inlet channel (22) are arranged at intervals along the circumferential direction of the first cavity (6), and the positioning member (10) is arranged to be reciprocatingly movable along a preset direction, and the preset direction is arranged parallel to the axial direction of the first cavity (6); wherein the first cavity (6) is cylindrical.

3. The detection device according to claim 1, characterized in that: The detection mechanism (20) further comprises a third air inlet channel (23) arranged in the positioning member (10), one end of the third air inlet channel (23) forming the air outlet (1), and the other end of the third air inlet channel (23) being used for communicating with the first air inlet channel (21) or the second air inlet channel (22).

4. The detection device according to claim 1, characterized in that: The detection device further comprises a connecting piece (30) arranged in the first cavity (6), wherein a circumferential side wall of the connecting piece (30) abuts against a cavity wall of the first cavity (6); The connecting member (30) has a guide groove (31) extending along the axial direction of the first cavity (6), and the positioning member (10) is movably arranged in the guide groove (31) along the extension direction of the guide groove (31).

5. The detection device according to claim 4, characterized in that: The connecting member (30) has a first annular groove (32) and a second annular groove (33) on its circumferential side wall. The first annular groove (32) and the second annular groove (33) are both arranged along the radial direction of the first cavity (6) and penetrate the groove wall of the guide groove (31), so that the first annular groove (32) is used to connect the first air inlet channel (21) and the third air inlet channel (23) of the detection mechanism (20), and the second annular groove (33) is used to connect the second air inlet channel (22) and the third air inlet channel (23) of the detection mechanism (20).

6. The detection device according to claim 5, characterized in that: At least part of the circumferential side wall of the positioning member (10) is recessed in a direction away from the connecting member (30), so that the at least part of the circumferential side wall and the groove wall of the guide groove (31) together form a gas delivery space (35), and the at least part of the circumferential side wall is provided with a first connecting hole (11), and the two ends of the first connecting hole (11) are respectively connected to the gas delivery space (35) and the third air inlet channel (23); and / or The gas delivery space (35) is in communication with the first annular groove (32) or the second annular groove (33), so that the gas in the first annular groove (32) or the second annular groove (33) flows through the gas delivery space (35) and enters the first communicating hole (11).

7. The detection device according to claim 6, characterized in that: The first air inlet channel (21) comprises a first air inlet channel section (211) and a second air inlet channel section (212), two ends of the first air inlet channel section (211) are respectively connected to an external air source and one end of the second air inlet channel section (212), and the other end of the second air inlet channel section (212) is connected to the first annular groove (32); and / or The second air inlet channel (22) comprises a third air inlet channel section (221) and a fourth air inlet channel section (222), two ends of the third air inlet channel section (221) are respectively connected to an external air source and one end of the fourth air inlet channel section (222), and the other end of the fourth air inlet channel section (222) is connected to the second annular groove (33); and / or The third air inlet channel (23) comprises a fifth air inlet channel section and a sixth air inlet channel section, the two ends of the fifth air inlet channel section are respectively connected to the first connecting hole (11) and one end of the sixth air inlet channel section, and the other end of the sixth air inlet channel section is used to form the air outlet (1).

8. The detection device according to claim 2, characterized in that: The detection device further comprises a first sealed cavity (71) and a second sealed cavity (72) arranged at intervals along the preset direction; the outer peripheral wall on one side of the positioning member (10) and the cavity wall of the first cavity (6) form the first sealed cavity (71), and the outer peripheral wall on the opposite side of the positioning member (10) and the cavity wall of the first cavity (6) form the second sealed cavity (72); The positioning member (10) is driven to move along the preset direction by inputting a preset medium into the first sealed cavity (71) and causing the preset medium in the second sealed cavity (72) to flow out, or by inputting a preset medium into the second sealed cavity (72) and causing the preset medium in the first sealed cavity (71) to flow out.

9. The detection device according to claim 8, characterized in that: The detection device further comprises a first medium flow channel (51) and a second medium flow channel (52), wherein the first medium flow channel (51) is in communication with the first sealed cavity (71), so that the preset medium in the first medium flow channel (51) flows into the first sealed cavity (71); The second medium flow channel (52) is in communication with the second sealed cavity (72), so that the preset medium in the second medium flow channel (52) flows into the second sealed cavity (72).

10. The detection device according to claim 4, characterized in that: A limiting groove (114) is provided at the end of the positioning member (10), the limiting groove (114) extending along the axial direction of the first cavity (6), the limiting groove (114) comprising a first groove wall and a second groove wall (1141) arranged at intervals along the extending direction thereof, the second groove wall (1141) being arranged away from the air outlet (1) relative to the first groove wall; The detection device further comprises a limiting member (115), at least a portion of which is inserted into the connecting member (30), and the end of the limiting member (115) abuts against the second groove wall (1141) to limit the positioning member (10).

Images