Micrometer for testing thickness of part

Abstract

The utility model discloses a micrometer for measuring the thickness of a part, which comprises a measuring base and a ruler body fixed on the right side of the measuring base, the ruler body is provided with an accurate measuring mechanism, and the accurate measuring mechanism comprises a measuring assembly, a calibration assembly and a laser distance measuring sensor; the measuring assembly comprises an outer shell, the outer shell is in sliding connection with the surface of the ruler body, the bottom of the outer shell is fixedly connected with a clamping jaw, the laser distance measuring sensor is installed in the clamping jaw through the installation assembly, the calibration assembly is arranged on the outer shell, and the laser distance measuring sensor detects the distance between the clamping jaw and a part. The utility model relates to the technical field of micrometers. According to the micrometer for testing the thickness of the part, after the clamping jaw is moved to clamp a workpiece, preliminary measurement is completed at the moment, measurement data can be obtained through manual reading and a displayer, meanwhile, the position of the clamping jaw subjected to preliminary measurement is adjusted through cooperation of the laser distance measuring sensor and the correction assembly, and then more accurate data are obtained.

Description

Technical Field

[0001] This utility model relates to the field of micrometer technology, specifically a micrometer for testing the thickness of parts. Background Technology

[0002] With the development of precision measurement technology, micrometers, as high-precision length measuring tools, have been widely used in mechanical manufacturing, quality inspection and other fields. However, traditional micrometers still have certain limitations in specific application scenarios, especially when it comes to the rapid and accurate measurement of part thickness, where existing technical solutions cannot fully meet the actual needs.

[0003] The patent publication number “CN103196341B” discloses a cap thickness micrometer, which uses a detachable measuring block on the micrometer body and a positioning hole on the measuring block to measure the thickness of parts with rod structures such as bolt heads.

[0004] As shown in the above technology, although the existing technology has solved the measurement problem of specific types of parts, it mainly relies on manual calibration and reading during the measurement process, which is prone to human error and affects the consistency and accuracy of the measurement results. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a micrometer for testing the thickness of parts, which solves the problem of inaccurate readings in existing micrometers for testing the thickness of parts.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: A micrometer for testing the thickness of parts includes a measuring base and a ruler body fixed on the right side of the measuring base. The ruler body is provided with a precision measuring mechanism, which includes a measuring component, a calibration component, and a laser rangefinder sensor.

[0007] The measuring component includes a housing that is slidably connected to the surface of a ruler. A gripper is fixedly connected to the bottom of the housing. A laser rangefinder is mounted inside the gripper via a mounting assembly. A calibration assembly is mounted on the housing. The laser rangefinder detects the distance between the gripper and the part and, in conjunction with the calibration assembly, calibrates the position of the gripper.

[0008] Preferably, the calibration component includes a protective box, which is fixedly connected to the back of the outer casing. A stepper motor is fixedly connected to the top of the inner wall of the protective box, and an electromagnetic clutch is fixedly connected to the back of the measurement component. The output end of the stepper motor is fixedly connected to the output end of the electromagnetic clutch.

[0009] Preferably, the output end of the electromagnetic clutch is fixedly connected to a drive shaft, the surface of the drive shaft is fixedly connected to a precision gear, an encoder is fixedly installed at the bottom of the inner wall of the protective box, one end of the drive shaft is fixedly connected to the input end of the encoder, and a precision rack is fixedly connected to the back of the measuring base, the precision gear meshes with the precision rack for transmission.

[0010] Preferably, the mounting assembly includes a groove and a mounting plate on the right side of the gripper, a measuring hole is provided on the left side of the inner wall of the groove, and a stop block is fixedly connected to both the front and back sides of the inner wall of the groove. The mounting plate has a threaded hole, and the laser rangefinder is screwed into the threaded hole.

[0011] Preferably, the right side of the mounting plate is fixedly connected to two front and rear fixed seats, and a middle rod is fixedly connected between the two fixed seats. A limiting plate for cooperating with the stop block is rotatably connected to the surface of the middle rod. A torsion spring is sleeved on the surface of the middle rod inside the limiting plate. One end of the torsion spring is fixedly connected to the surface of the middle rod, and the other end of the torsion spring is fixedly connected to the limiting plate.

[0012] Preferably, a display is embedded in the housing, and a computing unit is provided inside the housing. The computing unit is connected to the laser rangefinder, stepper motor and encoder respectively. Locking bolts are threaded on the front of the housing.

[0013] Beneficial effects

[0014] This invention provides a micrometer for testing the thickness of parts. Compared with the prior art, it has the following advantages:

[0015] 1. The micrometer used for testing the thickness of this part, through the calibration component including a protective box, is fixedly connected to the back of the outer shell. A stepper motor is fixedly connected to the top of the inner wall of the protective box, and an electromagnetic clutch is fixedly connected to the back of the measuring component. After the moving jaws clamp the workpiece, the preliminary measurement is completed. The measurement data can be obtained by manual reading and display. At the same time, the position of the jaws after the preliminary measurement is adjusted by the cooperation of the laser range sensor and the calibration component, so as to obtain more accurate data and improve the practicality of the device.

[0016] 2. The micrometer used for testing the thickness of this part is mounted on a mounting assembly consisting of a groove on the right side of the gripper and a mounting plate. A measuring hole is provided on the left side of the inner wall of the groove. Stops are fixedly connected to both the front and back sides of the inner wall of the groove. The laser rangefinder is installed through the mounting assembly. During installation, the laser rangefinder is screwed into the mounting plate and can be quickly installed into the gripper through the cooperation of the limiting plate, torsion spring and stop structure, which improves the convenience of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the appearance of the present utility model;

[0018] Figure 2 This is a side view diagram of the rear of this utility model;

[0019] Figure 3 This is a schematic diagram of the calibration component of this utility model;

[0020] Figure 4 This is a schematic diagram of the measuring component of this utility model;

[0021] Figure 5 This is a schematic diagram of the mounting components of this utility model.

[0022] In the diagram: 1. Measuring base; 2. Ruler body; 3. Measuring assembly; 31. Housing; 32. Gripper; 33. Locking bolt; 34. Display; 4. Calibration assembly; 41. Protective box; 42. Stepper motor; 43. Electromagnetic clutch; 44. Drive shaft; 45. Precision gear; 46. Encoder; 47. Precision rack; 5. Laser rangefinder sensor; 6. Mounting assembly; 61. Groove; 62. Measuring hole; 63. Stop; 64. Mounting plate; 65. Fixing base; 66. Intermediate rod; 67. Limiting plate; 68. Torsion spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-5 The micrometer used for thickness testing of this part offers two technical solutions:

[0025] The first embodiment includes a measuring base 1 and a ruler 2 fixed to the right side of the measuring base 1. The ruler 2 is provided with a precision measuring mechanism, which includes a measuring component 3, a calibration component 4 and a laser rangefinder 5.

[0026] The measuring component 3 includes a housing 31, which is slidably connected to the surface of the ruler 2. A gripper 32 is fixedly connected to the bottom of the housing 31. A display 34 is embedded in the housing 31. A calculation unit is set inside the housing 31, and the calculation unit is connected to the laser range sensor 5, the stepper motor 42 and the encoder 46 respectively. A locking bolt 33 is threaded on the front of the housing 31. The laser range sensor 5 is installed inside the gripper 32 through the mounting component 6. The calibration component 4 is set on the housing 31. The laser range sensor 5 detects the distance between the gripper 32 and the part, and works with the calibration component 4 to calibrate the position of the gripper 32.

[0027] The calibration component 4 includes a protective box 41, which is fixedly connected to the back of the outer shell 31. A stepper motor 42 is fixedly connected to the top of the inner wall of the protective box 41. An electromagnetic clutch 43 is fixedly connected to the back of the measuring component 3. The output end of the stepper motor 42 is fixedly connected to the output end of the electromagnetic clutch 43. A drive shaft 44 is fixedly connected to the output end of the electromagnetic clutch 43. A precision gear 45 is fixedly connected to the surface of the drive shaft 44. An encoder 46 is fixedly installed at the bottom of the inner wall of the protective box 41. One end of the drive shaft 44 is fixedly connected to the input end of the encoder 46. A precision rack 47 is fixedly connected to the back of the measuring base 1. The precision gear 45 and the precision rack 47 mesh and transmit power.

[0028] After the moving gripper 32 clamps the workpiece, the preliminary measurement is completed. The measurement data can be obtained by manual reading and display. At the same time, the position of the gripper 32 after the preliminary measurement is adjusted by the cooperation of the laser range sensor 5 and the calibration component 4, so as to obtain more accurate data and improve the practicality of the device.

[0029] The second embodiment differs from the first embodiment in that: the mounting assembly 6 includes a groove 61 on the right side of the gripper 32 and a mounting plate 64. A measuring hole 62 is provided on the left side of the inner wall of the groove 61. A stop block 63 is fixedly connected to both the front and back sides of the inner wall of the groove 61. A threaded hole is provided on the mounting plate 64, and the laser rangefinder sensor 5 is screwed into the threaded hole. Two fixing seats 65 are fixedly connected to the right side of the mounting plate 64. An intermediate rod 66 is fixedly connected between the two fixing seats 65. A limiting plate 67 that cooperates with the stop block 63 is rotatably connected to the surface of the intermediate rod 66. A torsion spring 68 is sleeved on the surface of the intermediate rod 66 inside the limiting plate 67. One end of the torsion spring 68 is fixedly connected to the surface of the intermediate rod 66, and the other end of the torsion spring 68 is fixedly connected to the limiting plate 67.

[0030] The laser rangefinder sensor 5 is installed via the mounting assembly 6. During installation, the laser rangefinder sensor 5 is screwed into the mounting plate 64, and through the cooperation of the limiting plate 67, the torsion spring 68 and the stop block 63, it can be quickly installed into the gripper, which improves the convenience of using the device.

[0031] In use, the part is placed in front of the measuring base 1, and the housing 31 is pushed to move, causing the gripper 32 to contact the part. After clamping, the movement of the housing 31 drives the precision gear 45 to move. The precision gear 45 rotates in conjunction with the precision rack 47. The rotation of the precision gear 45 drives the encoder 46 to rotate. The encoder 46 rotates and transmits the displacement data to the calculation unit. After calculation, the measurement result is displayed on the display 34. In addition, after the preliminary measurement, the laser range sensor 5 works and detects the distance between the gripper 32 and the workpiece. When the detected distance is not zero, the electromagnetic clutch 43 and the stepper motor 42 are activated. The stepper motor 42 starts and drives the transmission shaft 44 to rotate through the electromagnetic clutch 43. The rotation of the transmission shaft 44 causes the precision gear 45 to rotate, and then the position of the housing 31 is calibrated under the action of the precision rack 47, thereby obtaining accurate measurement results.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A micrometer for testing the thickness of parts, comprising a measuring base (1) and a ruler body (2) fixed to the right side of the measuring base (1), characterized in that: The ruler (2) is provided with a precision measuring mechanism, which includes a measuring component (3), a calibration component (4) and a laser rangefinder (5); The measuring component (3) includes a housing (31), which is slidably connected to the surface of the ruler (2). A gripper (32) is fixedly connected to the bottom of the housing (31). The laser range sensor (5) is installed inside the gripper (32) through the mounting component (6). The calibration component (4) is set on the housing (31). The laser range sensor (5) detects the distance between the gripper (32) and the part, and works with the calibration component (4) to calibrate the position of the gripper (32).

2. A micrometer for testing the thickness of a part according to claim 1, characterized in that: The calibration component (4) includes a protective box (41), which is fixedly connected to the back of the outer shell (31). A stepper motor (42) is fixedly connected to the top of the inner wall of the protective box (41). An electromagnetic clutch (43) is fixedly connected to the back of the measurement component (3). The output end of the stepper motor (42) is fixedly connected to the output end of the electromagnetic clutch (43).

3. A micrometer for testing the thickness of a part according to claim 2, characterized in that: The output end of the electromagnetic clutch (43) is fixedly connected to a drive shaft (44), and a precision gear (45) is fixedly connected to the surface of the drive shaft (44). An encoder (46) is fixedly installed at the bottom of the inner wall of the protective box (41). One end of the drive shaft (44) is fixedly connected to the input end of the encoder (46). A precision rack (47) is fixedly connected to the back of the measuring base (1). The precision gear (45) meshes with the precision rack (47) for transmission.

4. A micrometer for testing the thickness of a part according to claim 1, characterized in that: The mounting assembly (6) includes a groove (61) and a mounting plate (64) on the right side of the gripper (32). A measuring hole (62) is provided on the left side of the inner wall of the groove (61). A stop block (63) is fixedly connected to both the front and back sides of the inner wall of the groove (61). A threaded hole is provided on the mounting plate (64), and the laser rangefinder (5) is screwed into the threaded hole.

5. A micrometer for testing the thickness of a part according to claim 4, characterized in that: The mounting plate (64) is fixedly connected to two front and rear fixed seats (65) on its right side. A middle rod (66) is fixedly connected between the two fixed seats (65). A limiting plate (67) for cooperating with the stop block (63) is rotatably connected to the surface of the middle rod (66). A torsion spring (68) is sleeved on the surface of the middle rod (66) inside the limiting plate (67). One end of the torsion spring (68) is fixedly connected to the surface of the middle rod (66), and the other end of the torsion spring (68) is fixedly connected to the limiting plate (67).

6. A micrometer for testing the thickness of a part according to claim 1, characterized in that: The outer casing (31) is fitted with a display (34), and the interior of the outer casing (31) is equipped with a computing unit. The computing unit is connected to the laser rangefinder (5), the stepper motor (42) and the encoder (46) respectively. The front of the outer casing (31) is threaded with a locking bolt (33).

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