A device for detecting the straightness of a bore of a pneumatic actuator

Abstract

The utility model discloses a pneumatic actuator inner hole straightness detection device, including device frame, the lower end fixed setting of device frame has the undercarriage, the upper end fixed setting of undercarriage has the support frame, the upper end of support frame penetrates and is connected with the lead screw of rotation, the lower extreme of lead screw and first motor output shaft are connected, the mobile seat is set up in the upper extreme of lead screw and is close to the left fixed setting of cleaning and adjusting frame, before detection, through third electric telescopic handle and push the screw rod, through the cleaning cylinder to the pneumatic actuator inner hole carries out the cleaning, and under the action of fourth motor, third pivot, meshing gear set and transmission shaft, drives the support cylinder rotation, thereby drive the cleaning cylinder rotation, is helpful to the cleaning processing, avoids the influence of the stain to the detection, through second electric telescopic handle and push the clamping frame for pneumatic probe clamping support fixed, under the action of first electric telescopic handle, drives detection adjusting frame to move on the slide rail, is used for the adjustment of pneumatic probe.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic actuator testing technology, specifically a device for testing the straightness of the inner hole of a pneumatic actuator. Background Technology

[0002] The straightness inspection of the inner bore of pneumatic actuators is a key quality control step to ensure the smooth operation of its moving parts (such as pistons or valve stems) and reduce friction and leakage. Common methods for inspecting the straightness of the inner bore of pneumatic actuators include the go / no-go gauge method, the cylindricity / profilometer method, the dial indicator + mandrel method, and the pneumatic inspection method. Among them, the principle of the pneumatic inspection instrument is to detect the gap between the measuring nozzle (probe) and the inner bore of the workpiece by the flow of compressed air, thereby indirectly measuring the dimensional or shape error by detecting the change in air pressure or flow rate. However, since the pneumatic probe (single-point contact) can only measure a local area, it cannot effectively reflect the straightness of the entire inner bore. The pneumatic probe needs to be adjusted. Most existing pneumatic probes are adjusted by operators, which makes it easy to make errors during the inspection. In addition, the inner bore of the pneumatic actuator is prone to residues during processing, which can affect the inspection results. Utility Model Content

[0003] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0004] In view of the problems existing in the above and / or existing pneumatic actuator inner hole straightness detection devices, this utility model is proposed.

[0005] Therefore, the purpose of this utility model is to provide a device for detecting the straightness of the inner hole of a pneumatic actuator. Before testing, a screw is pushed by a third electric telescopic rod to clean the inner hole of the pneumatic actuator through a cleaning cylinder to avoid the influence of dirt on the test. A clamp is pushed by a second electric telescopic rod to hold and support the pneumatic probe. Under the action of the first electric telescopic rod, the test adjustment frame is moved on the slide rail for adjusting the pneumatic probe. At the same time, the rotating cylinder can be driven to rotate under the action of the second motor, the first rotating shaft, the gear and the gear ring, thereby driving the pneumatic probe to rotate and fully test the inner hole of the pneumatic actuator.

[0006] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0007] A pneumatic actuator inner hole straightness detection device includes a device frame, a base frame fixedly mounted at the lower end of the device frame, a support frame fixedly mounted at the upper end of the base frame, a lead screw rotatably connected through the upper end of the support frame, the lower end of the lead screw being connected to the output shaft of a first motor, a movable seat being mounted through the lead screw, opening slots being provided on the upper end of the device frame near both the left and right sides, a cleaning adjustment frame being fixedly mounted on the upper end of the movable seat near the left side, the cleaning adjustment frame passing through the opening slot, a clamping adjustment frame being fixedly mounted on the upper end of the device frame near the center, and a slide rail being installed on the upper end of the movable seat near the right side, with the detection adjustment frame slidably mounted on the slide rail.

[0008] The testing frame includes a rotating cylinder that is rotatably connected to the testing frame. A gear ring is fixedly provided on the outer ring of the rotating cylinder near the right side. The gear ring meshes with a gear. The gear is provided on the outer side of a first rotating shaft. The first rotating shaft is connected to the output shaft of a second motor. The second motor is located at the upper end of the testing frame.

[0009] The cleaning rack includes a second rotating shaft rotatably connected to the top of the cleaning rack. The lower end of the second rotating shaft is connected to the output shaft of a third motor. The third motor is located inside the cleaning rack. A rotating frame is fixedly connected to the upper end of the second rotating shaft. A drive shaft is rotatably connected to the inner wall of the rotating frame. A support cylinder is fixedly connected to the outer end of the drive shaft. A third electric telescopic rod is installed inside the support cylinder. A screw is fixedly connected to the outer end of the third electric telescopic rod. The screw is threadedly connected to the cleaning cylinder through a screw hole. The screw hole is located on the cleaning cylinder.

[0010] In a preferred embodiment of the pneumatic actuator bore straightness detection device of this utility model, a first electric telescopic rod is fixedly connected to the left side of the detection frame, and the first electric telescopic rod is installed through the device frame.

[0011] As a preferred embodiment of the pneumatic actuator inner hole straightness detection device of the present invention, a second electric telescopic rod is installed on the upper and lower sides of the inner wall of the rotating drum, and a clamp is fixedly connected to the inner end of the second electric telescopic rod. A pneumatic probe is clamped and fixed between the upper and lower clamps.

[0012] In a preferred embodiment of the pneumatic actuator inner hole straightness detection device of this utility model, the transmission shaft is connected to the third rotating shaft through a meshing gear set, the third rotating shaft is connected to the output shaft of the fourth motor, and the fourth motor is mounted on the rotating frame.

[0013] As a preferred embodiment of the pneumatic actuator inner hole straightness detection device of the present invention, the clamping adjustment frame includes a fourth electric telescopic rod fixedly disposed through the front and rear sides of the clamping adjustment frame, and a limit plate is fixedly connected to the inner end of the fourth electric telescopic rod.

[0014] As a preferred embodiment of the pneumatic actuator inner hole straightness detection device of the present invention, the clamping and adjusting frame further includes an extension plate fixedly disposed on the left side of the limiting plate, and a laser rangefinder is installed on the front side of the extension plate on the rear side.

[0015] As a preferred embodiment of the pneumatic actuator inner hole straightness detection device of the present invention, the clamping adjustment frame further includes a fixed frame fixedly installed on the upper end of the clamping adjustment frame near the rear side, a fifth electric telescopic rod is fixedly installed through the upper end of the fixed frame, and a pressure plate is fixedly connected to the lower end of the fifth electric telescopic rod.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: Before testing, the screw is pushed by the third electric telescopic rod, and the inner hole of the pneumatic actuator is cleaned by the cleaning cylinder. At the same time, the support cylinder is driven to rotate under the action of the fourth motor, the third rotating shaft, the meshing gear set and the transmission shaft, thereby driving the cleaning cylinder to rotate, which helps with cleaning and avoids the influence of dirt on the test. The clamp is pushed by the second electric telescopic rod for clamping and supporting the pneumatic probe. Under the action of the first electric telescopic rod, the test adjustment frame is driven to move on the slide rail for adjusting the pneumatic probe. At the same time, the rotating cylinder can be driven to rotate under the action of the second motor, the first rotating shaft, the gear and the gear ring, thereby driving the pneumatic probe to rotate, and fully testing the inner hole of the pneumatic actuator. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the base frame, support frame, and lead screw structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the testing and adjustment frame structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the transmission shaft, meshing gear set, third rotating shaft, and fourth motor structure of this utility model.

[0022] Figure 5 This is a schematic diagram of the support cylinder, the third electric telescopic rod, and the screw structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the clamping and adjusting frame structure of this utility model.

[0024] In the diagram: 1. Device frame; 2. Base frame; 3. Support frame; 4. Lead screw; 5. First motor; 6. Moving seat; 7. Opening slot; 8. Slide rail; 9. Detection and adjustment frame; 901. Rotary drum; 902. Second electric telescopic rod; 903. Clamp; 904. Gear ring; 905. Gear; 906. First rotating shaft; 907. Second motor; 908. Pneumatic probe; 10. First electric telescopic rod; 11. Cleaning and adjustment frame; 1101. Second rotating shaft; 1102. Third motor; 1103. Rotary drum. Frame; 1104, Drive shaft; 1105, Meshing gear set; 1106, Third rotating shaft; 1107, Fourth motor; 1108, Support cylinder; 1109, Third electric telescopic rod; 1110, Screw; 1111, Screw hole; 1112, Cleaning cylinder; 12, Clamping adjustment frame; 1201, Fourth electric telescopic rod; 1202, Limiting plate; 1203, Extension plate; 1204, Laser rangefinder; 1205, Fixing frame; 1206, Fifth electric telescopic rod; 1207, Pressure plate. Detailed Implementation

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views showing the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, in actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0028] This utility model provides a device for detecting the straightness of the inner hole of a pneumatic actuator. Before testing, a screw is pushed by a third electric telescopic rod to clean the inner hole of the pneumatic actuator through a cleaning cylinder to avoid the influence of dirt on the test. A clamp is pushed by a second electric telescopic rod to hold and support the pneumatic probe. Under the action of the first electric telescopic rod, the test adjustment frame moves on the slide rail for adjusting the pneumatic probe. At the same time, the rotating cylinder can be driven to rotate under the action of the second motor, the first rotating shaft, the gear and the gear ring, thereby driving the pneumatic probe to rotate and fully test the inner hole of the pneumatic actuator.

[0029] Figures 1-6 The diagram shown is an overall structural schematic of one embodiment of the pneumatic actuator inner bore straightness detection device of this utility model. Please refer to [link / reference]. Figures 1-6 This embodiment of a pneumatic actuator inner hole straightness detection device includes a device frame 1, a base frame 2 fixedly mounted at the lower end of the device frame 1, a support frame 3 fixedly mounted at the upper end of the base frame 2, a lead screw 4 rotatably connected through the upper end of the support frame 3, the lower end of the lead screw 4 being connected to the output shaft of a first motor 5, a movable seat 6 being mounted through the lead screw 4, an opening slot 7 being provided on the upper end of the device frame 1 near both the left and right sides, a cleaning adjustment frame 11 being fixedly mounted on the upper end of the movable seat 6 near the left side, the cleaning adjustment frame 11 passing through the opening slot 7, a clamping adjustment frame 12 being fixedly mounted on the upper end of the device frame 1 near the center, a slide rail 8 being installed on the upper end of the movable seat 6 near the right side, a detection adjustment frame 9 being slidably mounted on the slide rail 8, a first electric telescopic rod 10 being fixedly connected to the left side of the detection adjustment frame 9, the first electric telescopic rod 10 being installed through the device frame 1;

[0030] Depending on the different sizes of the pneumatic actuators being tested in the batch, the moving seat 6 is moved and adjusted to an appropriate position on the lead screw 4 via the first motor 5 and the lead screw 4, so that the pneumatic probe 908 and the cleaning cylinder 1112 are aligned with the center of the inner hole of the pneumatic actuator after the adjustment. The positioning method used for position adjustment is to use the existing endoscope + image processing method or laser displacement rotation scanning to fit the center coordinates of the hole using the least squares method. The above positioning methods are existing methods for aligning the center point of the inner hole. They are not specifically drawn in this solution and belong to the positioning and debugging steps before testing, so they will not be described in detail here. Under the action of the first electric telescopic rod 10, the testing adjustment frame 9 is moved on the slide rail 8 for adjusting the pneumatic probe 908.

[0031] The testing frame 9 includes a rotating drum 901 that is rotatably connected to the testing frame 9. A gear ring 904 is fixedly installed on the outer ring of the rotating drum 901 near the right side. The gear ring 904 is meshed with a gear 905. The gear 905 is installed on the outer side of the first rotating shaft 906. The first rotating shaft 906 is connected to the output shaft of the second motor 907. The second motor 907 is located at the upper end of the testing frame 9. A second electric telescopic rod 902 is installed on the upper and lower sides of the inner wall of the rotating drum 901. A clamp 903 is fixedly connected to the inner end of the second electric telescopic rod 902. A pneumatic probe 908 is clamped and fixed between the upper and lower clamps 903.

[0032] The second motor 907, the first rotating shaft 906, the gear 905, and the gear ring 904 drive the rotating drum 901 to rotate, thereby driving the pneumatic probe 908 to rotate, fully detecting the inner hole of the pneumatic actuator. The pneumatic probe 908 is connected to an external pneumatic measuring instrument through an air supply pipe. Under the action of the set time relay, the second motor 907 controls the pneumatic probe 908 to rotate forward a certain number of times and then reverse, repeating the forward and reverse cycles. The specific parameters depend on the situation. The time relay is an existing technology structure, model DH48S-S. The pneumatic probe 908 can be replaced with the appropriate one depending on the inner hole size.

[0033] The cleaning rack 11 includes a second rotating shaft 1101 rotatably connected to the top of the cleaning rack 11. The lower end of the second rotating shaft 1101 is connected to the output shaft of a third motor 1102, which is located inside the cleaning rack 11. A rotating frame 1103 is fixedly connected to the upper end of the second rotating shaft 1101. A drive shaft 1104 is rotatably connected to the inner wall of the rotating frame 1103. A support cylinder 1108 is fixedly connected to the outer end of the drive shaft 1104. A through-hole is located inside the support cylinder 1108. A third electric telescopic rod 1109 is installed, and a screw 1110 is fixedly connected to the outer end of the third electric telescopic rod 1109. The screw 1110 is threadedly connected to a cleaning cylinder 1112 through a screw hole 1111. The screw hole 1111 is opened on the cleaning cylinder 1112. The drive shaft 1104 is connected to the third rotating shaft 1106 through a meshing gear set 1105. The third rotating shaft 1106 is connected to the output shaft of the fourth motor 1107. The fourth motor 1107 is mounted on the rotating frame 1103.

[0034] Before testing, the screw 1110 is pushed by the third electric telescopic rod 1109, and the inner hole of the pneumatic actuator is cleaned by the cleaning cylinder 1112. At the same time, the support cylinder 1108 is rotated by the fourth motor 1107, the third rotating shaft 1106, the meshing gear set 1105 and the transmission shaft 1104, which in turn drives the cleaning cylinder 1112 to rotate, which helps with the cleaning process. The outer ring of the cleaning cylinder 1112 is wrapped with non-woven fabric. The cleaning cylinder 1112 is easily disassembled and installed on the screw 1110 through the screw hole 1111, which facilitates disassembly and replacement. When disassembly is required, the rotating frame 1103 is rotated by the third motor 1102 and the second rotating shaft 1101, so that the clean cleaning cylinder 1112 and the dirty cleaning cylinder 1112 on the other side are swapped for cleaning. The dirty cleaning cylinder 1112 can be threaded off and replaced for maintenance.

[0035] The clamping and adjusting frame 12 includes a fourth electric telescopic rod 1201 fixedly disposed through the front and rear sides of the clamping and adjusting frame 12. The inner end of the fourth electric telescopic rod 1201 is fixedly connected to a limiting plate 1202. The clamping and adjusting frame 12 also includes an extension plate 1203 fixedly disposed on the left side of the limiting plate 1202. A laser rangefinder 1204 is installed on the front side of the extension plate 1203 on the rear side.

[0036] Based on the outer dimensions of the pneumatic actuator, the distance between the two limiting plates 1202 is adjusted under the action of the fourth electric telescopic rod 1201 to facilitate the limiting placement of the pneumatic actuator. The distance between the laser rangefinder 1204 and the front extension plate 1203 is measured to control the adjusted distance position. When the distance between the laser rangefinder 1204 and the extension plate 1203 is equal to the distance between the front and rear limiting plates 1202, or when the distance between the laser rangefinder 1204 and the extension plate 1203 is not equal to the distance between the front and rear limiting plates 1202, the laser rangefinder 1204 detects a difference between the distance between the extension plate 1203 and the distance between the front and rear limiting plates 1202, and this difference is a fixed value. It can also indirectly measure and adjust the distance between the front and rear limiting plates 1202.

[0037] The clamping and adjusting frame 12 also includes a fixed frame 1205 fixedly installed on the upper end of the clamping and adjusting frame 12 near the rear side. A fifth electric telescopic rod 1206 is fixedly installed through the upper end of the fixed frame 1205, and a pressure plate 1207 is fixedly connected to the lower end of the fifth electric telescopic rod 1206.

[0038] The fifth electric telescopic rod 1206 pushes the pressure plate 1207 to press and fix the pneumatic actuator, enhancing stability during testing.

[0039] Combination Figures 1-6The following is a specific usage process of a pneumatic actuator inner bore straightness detection device according to the outer dimensions of the pneumatic actuator: The distance between the two limiting plates 1202 is adjusted under the action of the fourth electric telescopic rod 1201 to facilitate the limiting placement of the pneumatic actuator. The fifth electric telescopic rod 1206 pushes the pressure plate 1207 to press and fix the pneumatic actuator, enhancing stability during detection. The moving seat 6 is moved and adjusted to an appropriate position on the lead screw 4 via the first motor 5 and the lead screw 4. Before detection, the screw 1110 is pushed by the third electric telescopic rod 1109, and the inner bore of the pneumatic actuator is cleaned by the cleaning cylinder 1112. Simultaneously, the fourth motor 1107, the third rotating shaft 1106, the meshing gear set 1105, and the transmission... The moving shaft 1104 drives the support cylinder 1108 to rotate, thereby driving the cleaning cylinder 1112 to rotate, which helps with cleaning. The second electric telescopic rod 902 pushes the clamp 903 to clamp and support the pneumatic probe 908. The pneumatic probe 908 is connected to an external pneumatic measuring instrument through an air supply pipe. The first electric telescopic rod 10 drives the detection adjustment frame 9 to move on the slide rail 8 for adjusting the pneumatic probe 908. The second motor 907, the first rotating shaft 906, the gear 905 and the gear ring 904 drive the rotating cylinder 901 to rotate, thereby driving the pneumatic probe 908 to rotate, fully detecting the inner hole of the pneumatic actuator. The device is equipped with a central processing unit for control and processing. The central processing unit model is S7-1500.

[0040] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A device for detecting the straightness of the inner bore of a pneumatic actuator, comprising a device frame (1), characterized in that: The lower end of the device frame (1) is fixedly provided with a base frame (2), the upper end of the base frame (2) is fixedly provided with a support frame (3), the upper end of the support frame (3) is rotatably connected with a lead screw (4), the lower end of the lead screw (4) is connected to the output shaft of the first motor (5), a movable seat (6) is provided through the lead screw (4), the upper end of the device frame (1) is provided with opening slots (7) near the left and right sides, the upper end of the movable seat (6) is fixedly provided with a cleaning adjustment frame (11) near the left side, the cleaning adjustment frame (11) passes through the opening slot (7), the upper end of the device frame (1) is fixedly provided with a clamping adjustment frame (12) near the center, the upper end of the movable seat (6) is installed with a slide rail (8) near the right side, and a detection adjustment frame (9) is slidably provided on the slide rail (8); The testing frame (9) includes a rotating drum (901) that is rotatably connected to the testing frame (9). A gear ring (904) is fixedly provided on the outer ring of the rotating drum (901) near the right side. The gear ring (904) is meshed with a gear (905). The gear (905) is provided on the outside of a first rotating shaft (906). The first rotating shaft (906) is connected to the output shaft of a second motor (907). The second motor (907) is located at the upper end of the testing frame (9). The cleaning rack (11) includes a second rotating shaft (1101) rotatably connected to the top of the cleaning rack (11). The lower end of the second rotating shaft (1101) is connected to the output shaft of a third motor (1102). The third motor (1102) is located inside the cleaning rack (11). A rotating frame (1103) is fixedly connected to the upper end of the second rotating shaft (1101). A drive shaft (11) rotatably connects to the inner wall of the rotating frame (1103). 04), the outer end of the drive shaft (1104) is fixedly connected to a support cylinder (1108), a third electric telescopic rod (1109) is installed through the support cylinder (1108), the outer end of the third electric telescopic rod (1109) is fixedly connected to a screw (1110), the screw (1110) is threadedly connected to a cleaning cylinder (1112) through a screw hole (1111), and the screw hole (1111) is opened on the cleaning cylinder (1112).

2. The pneumatic actuator inner bore straightness detection device according to claim 1, characterized in that: The first electric telescopic rod (10) is fixedly connected to the left side of the detection frame (9), and the first electric telescopic rod (10) is installed inside the device frame (1).

3. The pneumatic actuator inner bore straightness detection device according to claim 1, characterized in that: The inner wall of the rotating drum (901) is provided with a second electric telescopic rod (902) installed on the upper and lower sides. The inner end of the second electric telescopic rod (902) is fixedly connected to a clamp (903), and a pneumatic probe (908) is clamped and fixed between the upper and lower clamps (903).

4. The pneumatic actuator inner bore straightness detection device according to claim 1, characterized in that: The drive shaft (1104) is connected to the third rotating shaft (1106) via a meshing gear set (1105). The third rotating shaft (1106) is connected to the output shaft of the fourth motor (1107). The fourth motor (1107) is mounted on the rotating frame (1103).

5. The pneumatic actuator inner bore straightness detection device according to claim 1, characterized in that: The clamping adjustment frame (12) includes a fourth electric telescopic rod (1201) fixedly installed through the front and rear sides of the clamping adjustment frame (12), and a limit plate (1202) is fixedly connected to the inner end of the fourth electric telescopic rod (1201).

6. The pneumatic actuator inner bore straightness detection device according to claim 5, characterized in that: The clamping and adjusting frame (12) also includes an extension plate (1203) fixedly disposed on the left side of the limiting plate (1202), and a laser rangefinder (1204) is installed on the front side of the extension plate (1203) on the rear side.

7. The pneumatic actuator inner bore straightness detection device according to claim 1, characterized in that: The clamping adjustment frame (12) also includes a fixed frame (1205) fixedly installed on the upper end of the clamping adjustment frame (12) near the rear side. A fifth electric telescopic rod (1206) is fixedly installed through the upper end of the fixed frame (1205), and a pressure plate (1207) is fixedly connected to the lower end of the fifth electric telescopic rod (1206).

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