Aerodynamic measuring instrument

Abstract

This utility model discloses a pneumatic measuring instrument, including a support plate. The main body of the pneumatic measuring instrument is placed on the rear side of the support plate. Bolts are threaded at the four corners of the support plate, and a support column is fixedly installed at the bottom of each bolt. A switching mechanism is set in the middle of the support plate, and several clamping mechanisms are set on the top of the switching mechanism, with the clamping mechanisms arranged in a circle about the center of the switching mechanism. This utility model, through the setting of the switching mechanism, controls the measuring head to rise and reset after completing the reading recording of a single workpiece. Then, the motor starts, and through the meshing transmission of the worm gear and worm wheel, the T-shaped column, the top disk, and the multiple clamping mechanisms on the disk rotate synchronously, realizing automatic workpiece switching, allowing the workpiece to be tested to be accurately moved directly under the measuring head. Subsequently, the measuring head repeats the actions of lowering for measurement and rising to reset. This linkage system shortens the workpiece change interval, improves measurement efficiency, and also reduces the ineffective consumption of compressed gas.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic measuring instrument technology, and more specifically, to a pneumatic measuring instrument. Background Technology

[0002] A pneumatic measuring instrument is a high-precision measuring device based on aerodynamic principles. It assesses the size, shape, or positional deviations of a workpiece by detecting changes in gas flow rate, pressure, or velocity. When the gap between the object being measured and the measuring head changes, the change in airflow resistance causes a change in the air pressure signal, which is then converted into an electrical signal by a sensor to achieve micron-level measurement.

[0003] A search revealed CN215725770U, which discloses an aperture pneumatic measuring instrument, including a balance base. The specification states that: a positioning mechanism can position the workpiece to be measured; an arc plate can fit against the outer wall of the cylindrical workpiece to increase its stability; a miniature cylinder can drive the arc plates to move closer together to clamp and position the workpiece through a telescopic rod; a disassembly screw can facilitate the disassembly of the measuring instrument housing, thereby facilitating the disassembly and replacement of the internal tapered glass tube; and a filter element can filter the gas passing through the airflow pipe.

[0004] However, this pneumatic measuring instrument still has certain limitations in practical applications. Specifically, the device only supports sequential inspection of a single workpiece during the measurement process, and the workpiece to be measured needs to be manually replaced after each measurement. During this interval, the continuous jetting of the measuring head not only results in the ineffective consumption of compressed gas and increases the energy consumption of the equipment, but also reduces the detection efficiency due to frequent loading and unloading operations, making it difficult to meet the high-efficiency inspection requirements of batch workpieces. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a pneumatic measuring instrument to solve the problem that some pneumatic measuring instruments in the prior art can only measure a single piece at a time, and the measuring head continuously sprays air when changing workpieces, resulting in gas waste, increased energy consumption, and reduced batch testing efficiency.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a pneumatic measuring instrument, comprising...

[0007] A support plate is provided, on the rear side of which the main body of the pneumatic measuring instrument is placed. Bolts are threadedly connected to the four corners of the support plate, and a support column is fixedly installed at the bottom of each bolt. A switching mechanism is provided in the middle of the support plate, and several clamping mechanisms are provided on the top of the switching mechanism, and the several clamping mechanisms are arranged in a circle about the center of the switching mechanism.

[0008] The switching mechanism includes a disc, a T-shaped column is fixedly installed on the lower surface of the middle part of the disc, the outer surface of the intersection of the disc and the T-shaped column is rotatably installed with the inner surface of the middle part of the support plate, a motor is fixedly installed on the lower surface of the support plate, a worm gear is fixedly sleeved at the output end of the motor, a worm wheel meshes with the outer edge of the worm gear, and the middle part of the worm wheel is fixedly sleeved with the outer surface of the T-shaped column.

[0009] The clamping mechanism includes a fixed plate and a clamping plate 1. The bottom of the fixed plate is fixedly mounted to the upper surface of the disc. An electric telescopic rod 1 is fixedly mounted on the surface of the fixed plate. A clamping plate 2 is fixedly mounted at the end of the electric telescopic rod 1. The lower surface of the clamping plate 2 is slidably mounted to the upper surface of the disc. The bottom of the clamping plate 1 is fixedly mounted to the upper surface of the disc.

[0010] The support plate has a lifting detection mechanism fixedly installed on the upper surface of the left side, and an auxiliary ejection mechanism is provided in the middle of the front side of the support plate.

[0011] The lifting and detection mechanism includes a frame, the bottom of which is fixedly installed on the upper surface of a support plate, a second electric telescopic rod fixedly installed on the top of the frame, a lifting plate fixedly installed at the bottom of the second electric telescopic rod, the inner surface of the left end of the lifting plate slidingly installed on the outer surface of the frame, and a bidirectional lead screw rotatably installed on the inner surface of the right end of the lifting plate. Two clamps are threadedly connected to the outer surface of the middle part of the bidirectional lead screw, and the two clamps are symmetrically arranged.

[0012] The auxiliary ejection mechanism includes a first connecting rod and a sliding groove. A connecting plate is fixedly installed at the bottom of the first connecting rod. A spring is provided on the outside of the bottom end of the first connecting rod. The two ends of the spring are fixedly connected to the inner surface of the support plate and the upper surface of the connecting plate, respectively. A second connecting rod is fixedly installed on the upper surface of the end of the connecting plate away from the spring. A push plate is fixedly installed on the top of the second connecting rod. The outer surfaces of the first connecting rod, the second connecting rod, and the push plate are all slidably installed with the inner surface of the support plate. Several sliding grooves are provided on the disc and are located between the first clamping plate and the second clamping plate. The inner surface of the sliding groove is slidably installed with the outer surface of the push plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] In the above scheme, a switching mechanism is incorporated. In actual measurement operations, the measurement process relies on the coordinated operation of the lifting detection mechanism and the pneumatic measuring instrument: the lifting detection mechanism first drives the measuring head downwards to insert into the middle of the workpiece below to complete the measurement, records the reading, and then drives the measuring head upwards to reset. Next, the motor starts, and through the meshing transmission of the worm gear and worm wheel, the T-shaped column, the top disc, and multiple clamping mechanisms on the disc rotate synchronously, achieving automatic workpiece switching. This allows the workpiece to be measured to be accurately moved directly below the measuring head, and then the measuring head repeats the downward measurement and upward reset actions. This linkage system shortens the workpiece change interval, improves measurement efficiency, and reduces ineffective consumption of compressed gas.

[0015] In the above scheme, an auxiliary ejection mechanism is set up. When the measured workpiece rotates to directly above the auxiliary ejection mechanism, the operator can change the workpiece in parallel during the measurement gap: first, release the clamping mechanism from the workpiece, then pull the first connecting rod upward, causing the connecting plate to move upward and the spring to contract. At the same time, the second connecting rod pushes the push plate to extend from the disc slide groove and lift the workpiece, making it easy to pick up and put down. After releasing, the parts reset under the action of the spring force, and the operator puts in the new workpiece and lets the clamping mechanism re-fix. The auxiliary ejection mechanism reduces the difficulty of manual operation and improves the convenience and efficiency of material changing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the switching mechanism and other structures of this utility model;

[0018] Figure 3 This is a schematic diagram of the lifting and detection mechanism of this utility model;

[0019] Figure 4 This is a schematic diagram of the auxiliary ejection mechanism and other structures of this utility model.

[0020] [Figure Labels]

[0021] 1. Support plate; 2. Bolt; 3. Column; 4. Main body of pneumatic measuring instrument; 5. Switching mechanism; 50. Disc; 51. T-shaped column; 52. Motor; 53. Worm gear; 54. Worm wheel; 6. Clamping mechanism; 60. Fixing plate; 61. Clamping plate one; 62. Electric telescopic rod one; 63. Clamping plate two; 7. Lifting and detection mechanism; 70. Frame; 71. Electric telescopic rod two; 72. Lifting plate; 73. Two-way lead screw; 74. Fixture; 8. Auxiliary ejection mechanism; 80. Connecting rod one; 81. Spring; 82. Connecting plate; 83. Connecting rod two; 84. Push plate; 85. Slide groove. Detailed Implementation

[0022] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0023] As attached Figure 1 To be continued Figure 4 An embodiment of this utility model provides a pneumatic measuring instrument, including...

[0024] Support plate 1, pneumatic measuring instrument body 4 is placed on the rear side of support plate 1, bolts 2 are threadedly connected to the four corners of support plate 1, and support columns 3 are fixedly installed at the bottom of bolts 2. A switching mechanism 5 is set in the middle of support plate 1, and several clamping mechanisms 6 are set on the top of switching mechanism 5, and the several clamping mechanisms 6 are arranged in a circle about the center of switching mechanism 5.

[0025] The switching mechanism 5 includes a disc 50, a T-shaped column 51 is fixedly installed on the lower surface of the middle part of the disc 50, the outer surface of the junction of the disc 50 and the T-shaped column 51 is rotatably installed with the inner surface of the middle part of the support plate 1, a motor 52 is fixedly installed on the lower surface of the support plate 1, a worm 53 is fixedly sleeved at the output end of the motor 52, a worm wheel 54 is meshed with the outer edge of the worm 53, and the middle part of the worm wheel 54 is fixedly sleeved with the outer surface of the T-shaped column 51.

[0026] The clamping mechanism 6 includes a fixed plate 60 and a clamping plate 61. The bottom of the fixed plate 60 is fixedly mounted on the upper surface of the disc 50. An electric telescopic rod 62 is fixedly mounted on the surface of the fixed plate 60. A clamping plate 63 is fixedly mounted on the end of the electric telescopic rod 62. The lower surface of the clamping plate 63 is slidably mounted on the upper surface of the disc 50. The bottom of the clamping plate 61 is fixedly mounted on the upper surface of the disc 50.

[0027] When a workpiece needs to be fixed by setting the clamping mechanism 6, the workpiece can be placed on top of the disc 50 and positioned between clamping plate 61 and clamping plate 63. Then, the electric telescopic rod 62 is extended to push the clamping plate 63 connected at the end to slide along the surface of the disc 50 and move closer to clamping plate 61, thus clamping the workpiece.

[0028] Among them, a lifting detection mechanism 7 is fixedly installed on the upper surface of the left side of the support plate 1, and an auxiliary ejection mechanism 8 is provided in the middle of the front of the support plate 1.

[0029] The lifting detection mechanism 7 includes a frame 70, the bottom of which is fixedly installed on the upper surface of the support plate 1, an electric telescopic rod 71 fixedly installed on the top of the frame 70, a lifting plate 72 fixedly installed at the bottom of the electric telescopic rod 71, the inner surface of the left end of the lifting plate 72 is slidably installed on the outer surface of the frame 70, and a bidirectional lead screw 73 is rotatably installed on the inner surface of the right end of the lifting plate 72. Two clamps 74 are threadedly connected to the outer surface of the middle part of the bidirectional lead screw 73, and the two clamps 74 are symmetrically arranged.

[0030] By setting up the lifting detection mechanism 7, when fixing the measuring head of the pneumatic measuring instrument body 4, it can pass through the hole at the end of the lifting plate 72 away from the frame 70. Then, rotate the adjustment knob exposed on the bidirectional lead screw 73 to make the bidirectional lead screw 73 rotate. The two clamps 74 connected in the middle thread approach each other and clamp the top of the measuring head. When the measuring head is inserted for subsequent lifting and lowering, the electric telescopic rod 71 can be extended to push the lifting plate 72 to slide up and down along the outer surface of the frame 70, thereby driving the measuring head to move up and down.

[0031] The auxiliary ejection mechanism 8 includes a first connecting rod 80 and a sliding groove 85. A connecting plate 82 is fixedly installed at the bottom of the first connecting rod 80. A spring 81 is provided on the outside of the bottom end of the first connecting rod 80. The two ends of the spring 81 are fixedly connected to the inner surface of the support plate 1 and the upper surface of the connecting plate 82, respectively. A second connecting rod 83 is fixedly installed on the upper surface of the end of the connecting plate 82 away from the spring 81. A push plate 84 is fixedly installed on the top of the second connecting rod 83. The outer surfaces of the first connecting rod 80, the second connecting rod 83, and the push plate 84 are all slidably installed with the inner surface of the support plate 1. Several sliding grooves 85 are provided on the disc 50 and are located between the first clamping plate 61 and the second clamping plate 63. The inner surface of the sliding groove 85 is slidably installed with the outer surface of the push plate 84.

[0032] The working process of this utility model is as follows:

[0033] During measurement, the pneumatic measuring instrument body 4 is first placed in the frame on the back of the support plate 1, and the measuring head is clamped to the end of the lifting detection mechanism 7. Then, the workpiece to be measured is fixed between the clamping plates 61 and 63 of several clamping mechanisms 6, thus completing the preparatory operation.

[0034] During actual measurement, the lifting detection mechanism 7 controls the measuring head of the pneumatic measuring instrument body 4 to move downward and insert it into the middle of the workpiece directly below for measurement. After reading and recording, the lifting detection mechanism 7 can be controlled to drive the measuring head upward. Then, the motor 52 is controlled to drive the worm gear 53 to rotate at a suitable angle, further driving the meshing worm wheel 54 to rotate. This causes the connected T-shaped column 51 and the disc 50 connected to the top of the T-shaped column 51 to rotate along the inner surface of the middle of the support plate 1. At this time, several clamping mechanisms 6 installed on the disc 50 rotate with it. As the disc 50 rotates, the workpiece that has been measured can be rotated away from the measuring head and directly below it, and a new workpiece to be measured can be rotated directly below the measuring head. At this time, the lifting detection mechanism 7 is controlled again to insert the measuring head into the interior of the workpiece for measurement and then rises. Thus, through the setting of the switching mechanism 5 and the multiple clamping mechanisms 6 on the top of the switching mechanism 5, the conversion of the workpiece to be measured can be facilitated quickly, which can improve the actual measurement efficiency of the pneumatic measuring instrument body 4 and reduce the idle time of the measuring head to a certain extent, thus reducing the ineffective consumption of compressed gas.

[0035] When the measured workpiece is rotated directly above the auxiliary ejection mechanism 8, the operator can change the workpiece while measuring the workpiece located below the measuring head. During operation, the clamping mechanism 6 can be controlled to unlock the workpiece first. Then, the connecting rod 80 is pulled upward, causing the connected plate 82 to move upward and the spring 81 sleeved at the bottom of the connecting rod 80 to contract. At the same time, the connecting rod 83 connected to the other end of the connecting plate 82 will push the push plate 84 to slide upward along the inner surface of the support plate 1 and slide out from the inner surface of the groove 85 opened on the disc 50, pushing the top workpiece to protrude, making it easier to pick up the workpiece. After releasing, the push plate 84 and other structures will return to their original position under the reset of the spring 81. At this time, the new workpiece is placed on the disc 50 and the clamping mechanism 6 is controlled to clamp it. Thus, the auxiliary ejection mechanism 8 assists in the workpiece changing operation, which can improve the convenience of operation.

[0036] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0037] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0038] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pneumatic measuring instrument, characterized in that include A support plate (1) is provided with a pneumatic measuring instrument body (4) placed on the rear side of the support plate (1). Bolts (2) are threadedly connected to the four corners of the support plate (1), and a support column (3) is fixedly installed at the bottom of each bolt (2). A switching mechanism (5) is provided in the middle of the support plate (1). Several clamping mechanisms (6) are provided on the top of the switching mechanism (5), and the several clamping mechanisms (6) are arranged in a circle around the center of the switching mechanism (5). The switching mechanism (5) includes a disc (50), a T-shaped column (51) is fixedly installed on the lower surface of the middle part of the disc (50), the outer surface of the junction of the disc (50) and the T-shaped column (51) is rotatably installed with the inner surface of the middle part of the support plate (1), a motor (52) is fixedly installed on the lower surface of the support plate (1), a worm (53) is fixedly sleeved on the output end of the motor (52), a worm wheel (54) is meshed on the outer edge of the worm (53), and the middle part of the worm wheel (54) is fixedly sleeved with the outer surface of the T-shaped column (51).

2. The pneumatic gauge of claim 1, wherein, The clamping mechanism (6) includes a fixed plate (60) and a clamping plate (61). The bottom of the fixed plate (60) is fixedly mounted on the upper surface of the disc (50). An electric telescopic rod (62) is fixedly mounted on the surface of the fixed plate (60). A clamping plate (63) is fixedly mounted on the end of the electric telescopic rod (62). The lower surface of the clamping plate (63) is slidably mounted on the upper surface of the disc (50). The bottom of the clamping plate (61) is fixedly mounted on the upper surface of the disc (50).

3. The pneumatic gauge of claim 1, wherein, A lifting detection mechanism (7) is fixedly installed on the upper surface of the left side of the support plate (1), and an auxiliary ejection mechanism (8) is provided in the middle of the front side of the support plate (1).

4. The pneumatic gauge of claim 3, wherein, The lifting detection mechanism (7) includes a frame (70), the bottom of the frame (70) is fixedly installed on the upper surface of the support plate (1), the top of the frame (70) is fixedly installed with an electric telescopic rod (71), the bottom end of the electric telescopic rod (71) is fixedly installed with a lifting plate (72), the inner surface of the left end of the lifting plate (72) is slidably installed with the outer surface of the frame (70), the inner surface of the right end of the lifting plate (72) is rotatably installed with a two-way screw (73), the outer surface of the middle part of the two-way screw (73) is threaded with two clamps (74), and the two clamps (74) are symmetrically arranged.

5. The pneumatic gauge of claim 3, wherein, The auxiliary ejection mechanism (8) includes a connecting rod (80) and a sliding groove (85). A connecting plate (82) is fixedly installed at the bottom of the connecting rod (80). A spring (81) is provided on the outside of the bottom end of the connecting rod (80). The two ends of the spring (81) are fixedly connected to the inner surface of the support plate (1) and the upper surface of the connecting plate (82) respectively. A connecting rod (83) is fixedly installed on the upper surface of the end of the connecting plate (82) away from the spring (81). A push plate (84) is fixedly installed on the top of the connecting rod (83). The outer surfaces of the connecting rod (80), the connecting rod (83), and the push plate (84) are all slidably installed with the inner surface of the support plate (1). Several sliding grooves (85) are provided on the disc (50) and are located between the clamping plate (61) and the clamping plate (63). The inner surface of the sliding groove (85) is slidably installed with the outer surface of the push plate (84).

Images