Large-diameter internal thread measuring head capable of being horizontally adjusted
By introducing adjustable screw and limit column structure into the internal threaded probe, combined with the turntable driven by stepper motor, the problems of instability and measurement error during the probe detection process are solved, achieving higher stability and Flexibility ensures the accuracy and versatility of the test results.
Patent Information
- Application Number
- CN202421122081.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2024-12-24
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing internal thread probe lacks adjustment function, which leads to unstable detection process and manual rotation causes the probe to shift, affecting the measurement accuracy.
A large diameter internal thread probe with horizontal adjustment is designed, using a fixed base, screw, limiting column, stepper motor and spring structure. The probe is adjusted in two directions through screw and limiting column. Stepper motor The drive dial achieves precise rotation to ensure a stable fit between the probe and the inner wall of the workpiece.
It improves the stability and flexibility of the probe, avoids measurement errors caused by manual operation, and ensures the accuracy and versatility of the detection results.
Smart Images
Figure CN222231610U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ring gauge detectors, in particular to a horizontally adjustable large-diameter internal thread measuring head. Background Art
[0002] A ring gauge is a device used to measure and detect the size, shape or surface features of a workpiece. It is commonly used in industrial production, especially in the fields of machining, manufacturing and assembly. Ring gauges can be used to measure parameters such as the inner diameter, outer diameter, roundness, cylindricity of cylindrical workpieces, as well as various dimensions and features of workpieces of other shapes. The working principle of a ring gauge is usually based on sensor technology, such as optical sensors, laser sensors, contact sensors, etc.
[0003] Ring gauge testers usually need to be equipped with appropriate probes to achieve measurement. The internal thread probe is a device used to measure the size and shape of the internal thread of the workpiece. A sensor element is provided on its surface. It collects the geometric features of the thread, such as the inner diameter, pitch, thread depth, etc., in real time through contact or non-contact with the internal thread surface of the workpiece, and then transmits these data to the measuring instrument.
[0004] In the process of realizing the utility model, the inventors found that the prior art has the following problems: 1. Most of the current detection probes are of a two-petal structure and lack an adjustment function, resulting in a small range of use. They lack stability during use, and the lack of a structure on the outside of the workpiece for fixing will cause the workpiece to become unstable during the detection process, thereby affecting the detection effect of the probe; 2. Since the probe needs to fit the inner wall of the workpiece in a surrounding manner for detection, the process needs to be carried out by manual rotation, and manual operation will cause the top probe to be offset due to different forces, thereby affecting the detection results. Utility Model Content
[0005] The utility model aims to provide a horizontally adjustable large-diameter internal thread probe, so as to solve the problems of the lack of stability of the probe in the detection process and the deviation caused by manual rotation in the above-mentioned background technology. To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the horizontally adjustable large-diameter internal thread probe comprises a fixed base, the internal rotation of the fixed base is connected with a screw rod, the screw rod is connected with a limit column through a nut and bolt provided on its surface, the limit column is fitted and connected to the two ends of the outer wall of the fixed base, the top of the fixed base is provided with a rotating base, a stepping motor is provided between the rotating bases, the stepping motor is connected to the surface of the fixed base through bolts, a spring is provided inside the rotating base, one end of the spring is welded to one side of the inner wall of the rotating base, the other end of the spring is welded with a slider, the top of the slider is welded with a connecting column, the top of the connecting column is provided with a probe, the bottom of the fixed base is connected with a detector through bolts, a turntable is installed at the output end of the stepping motor, and the turntable is respectively connected to the bottom of the rotating base through a connecting rod provided on its surface.
[0006] Further preferably, the screw rods are provided with four groups respectively located at the four corner edges of the fixed base, and every two groups of screw rods are connected by belts, and the limiting columns are respectively slidably connected to the slide grooves on both sides of the fixed base through the screw rods.
[0007] Further preferably, the surface of the probe is threaded, and a plurality of balls are provided on the surface of the probe, and the probe is electrically connected to a detector via a sensor at the bottom thereof.
[0008] Further preferably, the fixed base is concave, and the turntable is rotatably connected to the lower side of the fixed base surface through a stepper motor, and the connecting rods are distributed parallel to the axis of the turntable, and the rotating base forms a reciprocating rotational motion on the surface of the fixed base through the connecting rods and the turntable.
[0009] Further preferably, two ends of the bottom of the fixed base are rotatably connected to bogies respectively.
[0010] Further preferably, the measuring head forms an elastic reset structure through a spring and a slider, and a lever is glued to the surface of the slider, and one end of the lever is slidably connected to a slide groove provided on the surface of the rotating base.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] In the utility model, four limit posts whose distances can be adjusted by screws are added to the outside of the probe. The probe is used to fit on the inner wall of the workpiece, and the limit posts are used to fit on the outer wall of the workpiece. The workpiece is fixed from both the inside and the outside to ensure the smooth progress of the detection process. The telescopic structure between the probes through the springs is not only convenient for docking with the inside of the workpiece, but also can be adapted to workpieces of different diameters by adjusting the distance. The limit posts are adjustable through the screws, and the internal and external bidirectional adjustability improves the flexibility and versatility of detection.
[0013] In the utility model, the probe adopts a bilateral type, which can provide higher stability. At the same time, the turntable is driven by a stepper motor. During the rotation, the rotating base is made to move in a circular motion accordingly through a connecting rod, so that the probe can be fitted to the inner wall of the workpiece for rotation detection. Compared with the manual rotation method, the mechanical type can ensure consistency and rotate the probe at a precise speed and force, thereby ensuring the accuracy of the measurement and avoiding the problem of measurement results being affected by interference from human factors. In addition, a foldable bogie is added so that the probe can operate vertically or horizontally, thereby increasing the versatility of detection. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0015] Figure 2 This is a schematic diagram of the internal structure of the fixed base of the utility model;
[0016] Figure 3 This is a schematic diagram of the structure of the turntable and the rotating base of the utility model;
[0017] Figure 4 It is a schematic diagram of the internal structure of the rotating base of the utility model.
[0018] In the figure: 1. fixed base; 2. screw; 3. limit column; 4. rotating base; 5. stepper motor; 6. spring; 7. slider; 8. connecting column; 9. probe; 10. detector; 11. turntable; 12. connecting rod; 13. bogie; 14. lever. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.
[0020] See also Figures 1 to 4The utility model provides a technical solution: a horizontally adjustable large-diameter internal thread probe, comprising a fixed base 1, a screw 2 is rotatably connected inside the fixed base 1, the screw 2 is connected to a limit column 3 through a nut and bolt provided on its surface, the limit column 3 is fitted and connected to the two ends of the outer wall of the fixed base 1, a rotating base 4 is provided on the top of the fixed base 1, a stepping motor 5 is provided between the rotating bases 4, the stepping motor 5 is connected to the surface of the fixed base 1 through bolts, a spring 6 is provided inside the rotating base 4, one end of the spring 6 is welded to one side of the inner wall of the rotating base 4, a slider 7 is welded to the other end of the spring 6, a connecting column 8 is welded to the top of the slider 7, a probe 9 is provided on the top of the connecting column 8, a detector 10 is connected to the bottom of the fixed base 1 through bolts, a turntable 11 is installed at the output end of the stepping motor 5, and the turntable 11 is respectively connected to the bottom of the rotating base 4 through a connecting rod 12 provided on its surface.
[0021] In this embodiment, Figure 2 As shown, four groups of screw rods 2 are respectively located at the four corner edges of the fixed base 1, and every two groups of screw rods 2 are connected by belts, and the limit columns 3 are respectively slidably connected to the slide grooves on both sides of the fixed base 1 through the screw rods 2; currently, when detecting the internal thread of the workpiece, it may be necessary to manually fix the workpiece or add auxiliary clamps on the outside to fix the workpiece to maintain the stability of the detection of the probe 9, but the external clamp may not be compatible with the probe 9 and affect the operation of the detection process. Four limit columns 3 whose distances can be adjusted by the screw rods 2 are added to the outside of the probe 9. The probe 9 is used to fit the inner wall of the workpiece, and the limit columns 3 are used to fit the outer wall of the workpiece. The workpiece is fixed from both the inside and the outside to ensure the smooth progress of the detection process.
[0022] In this embodiment, Figure 1 As shown, the surface of the probe 9 is threaded, and a plurality of ball bearings are provided on the surface of the probe 9, and the probe 9 is electrically connected to the detector 10 through the sensor at the bottom thereof; the detector 10 (model: 421O-01), the probe 9 equipped with the ball bearing and the sensor is the prior art, and its principle is that when the ball bearing rolls on the surface of the internal thread, it is subjected to forces from the changes in the thread profile, and these force changes will cause the contact force between the ball bearing and the sensor to change, and when the contact force changes, the sensor will generate a corresponding electrical signal, which is processed and amplified by the signal processing circuit, and then converted into a readable measurement value and displayed by the detector 10, while the probe 9 adopts a bilateral type, and compared with the current single-sided probe 9 measurement method, the measurement result will be inaccurate due to the uneven surface of the workpiece, and the bilateral probe 9 can provide higher stability and make up for the shortcomings through simultaneous measurement.
[0023] In this embodiment, Figure 1 and Figure 3As shown, the fixed base 1 is concave, and the turntable 11 is rotatably connected to the lower side of the surface of the fixed base 1 through the stepper motor 5, and the connecting rods 12 are parallelly distributed about the axis of the turntable 11, and the rotating base 4 forms a reciprocating rotational motion on the surface of the fixed base 1 through the connecting rod 12 and the turntable 11; it should be noted that the probe 9 is suitable for measuring the internal threads on the workpiece with a nominal diameter greater than or equal to 31 mm. In order to ensure the maximum applicable range of the probe 9, the diameter of the turntable 11 is larger than this specification. The turntable 11 driven by the stepper motor 5 rotates during the rotation process, so that the rotating base 4 makes a circular motion along it accordingly through the connecting rod 12, so as to achieve the purpose of the probe 9 fitting on the inner wall of the workpiece for rotation detection. Compared with the manual rotation method, the mechanical method can ensure consistency and rotate the probe 9 at a precise speed and force, thereby ensuring the accuracy of the measurement and avoiding the problem of the measurement result being affected by the interference of human factors.
[0024] In this embodiment, Figure 1 As shown, the two ends of the bottom of the fixed base 1 are rotatably connected with bogies 13 respectively; through the foldable bogies 13, the probe 9 can operate vertically or horizontally, which increases the versatility of detection.
[0025] In this embodiment, Figure 4 As shown, the probe 9 forms an elastic reset structure through the spring 6 and the slider 7, and the surface of the slider 7 is glued with a lever 14, and one end of the lever 14 is slidably connected to the slide groove opened on the surface of the rotating base 4; since the probe 9 is suitable for measuring the internal threads on the workpiece with a nominal diameter greater than or equal to 31 mm, in order to ensure the maximum use range of the probe 9 and its convenience in docking with the inner wall of the workpiece, through the external lever 14 and the slider 7 and due to the elastic characteristics of the spring 6, the distance between the two probes 9 can be reduced, and it is easier to insert into the inner wall of the workpiece, and after the external force is lost, the spring 6 resets again to make the probes 9 respectively adhere to the inner wall of the workpiece. This structure is not only convenient for docking with the workpiece, but also because of the characteristics of the spring 6, the distance between the probes 9 can be adjusted, so that the inner diameter specifications of the workpiece to be inspected are not limited, thereby improving the flexibility and versatility of inspection.
[0026] The use method and advantages of the utility model: When the horizontally adjustable large-diameter internal thread probe is used, the working process is as follows:
[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, first, the working angle of the probe 9 is selected according to the specific size of the workpiece to be inspected. If the probe 9 needs to be inspected horizontally, the bogie 13 can be turned over to make the fixed base 1 perpendicular to the desktop. If the probe 9 needs to be inspected vertically, the bogie 13 can be placed on the desktop. The operator pushes the two levers 14 closer to each other, thereby shortening the distance between the probes 9 and inserting the probe 9 into the inside of the workpiece to be inspected. When the lever 14 is released again, the probe 9 is reset to fit the inner wall of the workpiece under the structure of the spring 6. The screw 2 is shaken by the handles at both ends of the outside of the fixed base 1. The rotation of the screw 2 causes the nut to drive the limit column 3 to transmit accordingly and then fit the outer wall of the workpiece to fix the workpiece. After the power is turned on, the stepper motor 5 rotates. The turntable 11 is rotated, and then the connecting rod 12 drives the rotating base 4 to move in a circular motion along the surface of the turntable 11. At the same time, the probe 9 rotates on the inner wall of the workpiece while the workpiece is attached. During the detection process, the internal thread of the workpiece is in contact with the ball on the probe 9. If there are scratches on the thread slope, collapse of the screw peak and cracks in the screw valley inside the workpiece, the ball will jump, and the jumping of the ball will change the contact force between it and the sensor. When the contact force changes, the sensor will generate a corresponding electrical signal, which is processed and amplified by the signal processing circuit, and then converted into a readable measurement value and displayed by the detector 10. By reading the reading on the upper end of the detector 10, the precision size of the processed or detected arc internal thread can be obtained.
[0028] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.
Claims
1. A horizontally adjustable large-diameter internal thread probe, comprising a fixed base (1), characterized in that: The fixed base (1) is internally rotatably connected with a screw rod (2), the screw rod (2) is connected to a limiting column (3) via nuts and bolts provided on the surface thereof, the limiting column (3) is closely connected to the two ends of the outer wall of the fixed base (1), the top of the fixed base (1) is provided with a rotating base (4), a stepping motor (5) is provided between the rotating bases (4), the stepping motor (5) is connected to the surface of the fixed base (1) via bolts, the rotating base (4) is internally provided with a spring (6), the One end of the spring (6) is welded to one side of the inner wall of the rotating base (4), the other end of the spring (6) is welded with a slider (7), the top of the slider (7) is welded with a connecting column (8), the top of the connecting column (8) is provided with a probe (9), the bottom of the fixed base (1) is connected to a detector (10) by bolts, the output end of the stepping motor (5) is installed with a turntable (11), and the turntable (11) is connected to the bottom of the rotating base (4) through a connecting rod (12) provided on its surface.
2. The horizontally adjustable large-diameter internal thread probe according to claim 1, characterized in that: The screw rods (2) are provided with four groups respectively located at the four corner edges of the fixed base (1), and every two groups of screw rods (2) are connected by belts, and the limiting columns (3) are respectively slidably connected to the slide grooves on both sides of the fixed base (1) through the screw rods (2).
3. The horizontally adjustable large-diameter internal thread probe according to claim 1, characterized in that: The surface of the measuring head (9) is threaded, and a plurality of balls are provided on the surface of the measuring head (9), and the measuring head (9) is electrically connected to a detector (10) via a sensor at the bottom thereof.
4. The horizontally adjustable large-diameter internal thread probe according to claim 1, characterized in that: The fixed base (1) is concave, and the turntable (11) is rotatably connected to the lower side of the surface of the fixed base (1) through a stepping motor (5), and the connecting rods (12) are arranged parallel to the axis of the turntable (11), and the rotating base (4) forms a reciprocating rotation motion on the surface of the fixed base (1) through the connecting rod (12) and the turntable (11).
5. The horizontally adjustable large-diameter internal thread probe according to claim 1, characterized in that: Both ends of the bottom of the fixed base (1) are rotatably connected to bogies (13) respectively.
6. The horizontally adjustable large-diameter internal thread probe according to claim 1, characterized in that: The measuring head (9) forms an elastic reset structure through a spring (6) and a slider (7), and a lever (14) is glued to the surface of the slider (7), and one end of the lever (14) is slidably connected to a slide groove provided on the surface of the rotating base (4).