Device for measuring straightness of micrometer holder

Abstract

The utility model discloses a micrometer holder straightness measuring device, which comprises a holder body, a mounting sleeve is mounted on the inner side of one end of the holder body, a calibrator is mounted on the inner side of the mounting sleeve, the calibrator comprises a protective shell, a positioning shaft is fixedly mounted at one end of the protective shell, and the other end of the protective shell is provided with a positioning pin. External threads are arranged on the outer surface of one end of the positioning shaft, a wire mounting port is formed in one side of the protective shell, a laser light source body is mounted on the inner side of the protective shell, and three adjusting screw holes are formed in the outer side of the end, away from the positioning shaft, of the protective shell; the inner wall of the other end of the ruler frame main body is provided with a plurality of guide raised lines, and the inner sides of the plurality of guide raised lines are provided with an adjustable measured anvil. According to the utility model, the calibrator and the micrometer are assembled, and a laser beam is emitted from the center shaft of the micrometer to the tail end of the micrometer frame, so that the straightness is intuitively determined, the measurement time is short, the measurement distance is long, the precision is high, and the efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of micrometers, in particular to a device for measuring the straightness of a micrometer frame. Background Art

[0002] Micrometer, also known as micrometer screw, is a tool for measuring length more accurately than vernier caliper. It can measure length with an accuracy of 0.001mm. The structure of micrometer consists of a fixed scale frame, anvil, micrometer screw, fixed sleeve, differential cylinder, force measuring device, locking device, etc. It is now mainly divided into two categories: mechanical micrometer and digital (electronic) micrometer. It is widely used in various industries such as processing and manufacturing, installation of metalworking, woodworking, water and electricity equipment, measurement institutions and scientific research institutes. The accuracy of micrometer is particularly important for mechanical production and processing, scientific research and manufacturing. The straightness of the micrometer needs to be tested before the micrometer measures the measured part.

[0003] When measuring the straightness of a micrometer, the main measuring method is to use a ruler to lean against the central axis of the ruler frame to measure the straightness of the tail end of the ruler frame. The measuring time is long, the accuracy is low, the measuring distance is small, and the measuring efficiency is low; therefore, it does not meet the existing needs. In this regard, we propose a measuring device for the straightness of a micrometer frame. Utility Model Content

[0004] The utility model aims to provide a device for measuring the straightness of a micrometer frame, so as to solve the problems raised in the above-mentioned background technology that when measuring the straightness of a micrometer, the main measuring method is to use a ruler against the central axis of the frame to measure the straightness of the tail end of the frame, which results in long measuring time, low precision, small measuring distance and low measuring efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for measuring the straightness of a micrometer frame, comprising a frame body, a mounting sleeve is installed on the inner side of one end of the frame body, a calibrator is installed on the inner side of the mounting sleeve, the calibrator comprises a protective shell, a positioning shaft is fixedly installed on one end of the protective shell, an outer surface of one end of the positioning shaft is provided with an external thread, a wire installation port is provided on one side of the protective shell, a laser light source body is installed on the inner side of the protective shell, and three adjustment screw holes are provided on the outer side of one end of the protective shell away from the positioning shaft;

[0006] The inner wall of the other end of the ruler frame body is provided with a plurality of guide ridges, and an adjustable anvil to be measured is installed on the inner side of the plurality of guide ridges.

[0007] Preferably, the adjustable anvil to be measured includes an anvil body to be measured, an elastic support ring is movably installed on the outer side of the anvil body to be measured, a locking cover is installed on one side of the elastic support ring, a transmission threaded sleeve is movably installed on one end of the anvil body to be measured, and an adjustment knob is rotatably connected to the inner side of the transmission threaded sleeve.

[0008] Preferably, the locking cover is sleeved and installed on the outside of the measured anvil body and is connected to the ruler frame body through threads, and the measured anvil body and the locking cover are slidably connected through an elastic support ring.

[0009] Preferably, the transmission thread sleeve is embedded and installed with a plurality of guide ridges, the transmission thread sleeve is slidably connected to the ruler frame body through a plurality of guide ridges, and one end of the adjustment knob passes through the ruler frame body and is threadedly connected to the transmission thread sleeve.

[0010] Preferably, a light spot reference mark is provided at the center of the end of the anvil body to be measured facing the laser light source body.

[0011] Preferably, a nut is provided on the outer side of the external thread, one end of the positioning shaft passes through the mounting sleeve and the ruler frame body in sequence and is threadedly connected to the nut, and the positioning shaft is fixedly connected to the ruler frame body by the nut.

[0012] Preferably, a screw is provided on the inner side of the adjusting screw hole, the screw is connected to the protective shell by a thread, and the laser light source body is movably connected to the protective shell by three screws.

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

[0014] 1. The utility model is provided with three adjusting screw holes on the outer side of the protective housing away from the end of the positioning shaft, and screws are provided in the adjusting screw holes, so that the laser light source body is connected to the protective housing through the three screws. By rotating the three screws, the laser light source body can be adjusted on the inner side of the protective housing, so that the laser light of the laser light source body is coaxial with the positioning shaft, and the laser is irradiated to the end of the anvil body to be measured through the laser light source body, so that the straightness of the ruler frame body can be measured intuitively;

[0015] 2. The utility model rotates the adjusting knob so that the adjusting knob drives the transmission thread sleeve to slide horizontally between multiple guide convex strips, and the transmission thread sleeve pushes the measured anvil body to be adjusted horizontally on the inner side of the elastic support ring and the locking cover, thereby being able to accurately adjust the distance between the measured anvil body and the calibrator, thereby realizing the zeroing operation of the measured anvil body inside the ruler frame body. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model as a whole;

[0018] Figure 3 It is a structural schematic diagram of the calibrator of the utility model;

[0019] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the adjustable anvil to be tested of the utility model.

[0020] In the figure: 1. ruler frame body; 2. calibrator; 3. adjustable anvil to be measured; 4. mounting sleeve; 5. positioning shaft; 6. protective shell; 7. laser light source body; 8. wire mounting port; 9. external thread; 10. adjusting screw hole; 11. adjusting knob; 12. anvil to be measured body; 13. transmission thread sleeve; 14. elastic support ring; 15. locking cover; 16. guide convex strip. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figures 1 to 3 The utility model provides an embodiment: a device for measuring the straightness of a micrometer frame, comprising a frame body 1, a mounting sleeve 4 is installed on the inner side of one end of the frame body 1, a calibrator 2 is installed on the inner side of the mounting sleeve 4, the calibrator 2 comprises a protective shell 6, a positioning shaft 5 is fixedly installed on one end of the protective shell 6, an outer surface of one end of the positioning shaft 5 is provided with an external thread 9, a nut is provided on the outer side of the external thread 9, one end of the positioning shaft 5 passes through the mounting sleeve 4 and the frame body 1 in sequence and is connected to the nut by a thread, the positioning shaft 5 is fixedly connected to the frame body 1 by a nut, and the calibrator 2 and the frame body 1 are conveniently disassembled and assembled by the nut;

[0023] A wire installation port 8 is provided on one side of the protective shell 6, and a laser light source body 7 is installed on the inner side of the protective shell 6. Three adjustment screw holes 10 are provided on the outer side of the end of the protective shell 6 away from the positioning axis 5, and screws are provided on the inner side of the adjustment screw holes 10. The screws are connected to the protective shell 6 through threads, and the laser light source body 7 is movably connected to the protective shell 6 through the three screws. By rotating the three screws, the laser light source body 7 can be adjusted on the inner side of the protective shell 6 to achieve the coaxiality of the laser light of the laser light source body 7 and the positioning axis 5.

[0024] See also Figure 1 , Figure 2 and Figure 4The inner wall of the other end of the ruler frame body 1 is provided with a plurality of guide ridges 16, and an adjustable anvil 3 to be measured is installed on the inner side of the plurality of guide ridges 16. The adjustable anvil 3 to be measured includes a measured anvil body 12, and an elastic support ring 14 is movably installed on the outer side of the measured anvil body 12. A transmission thread sleeve 13 is movably installed on one end of the measured anvil body 12, and an adjusting knob 11 is rotatably connected to the inner side of the transmission thread sleeve 13. The transmission thread sleeve 13 is embedded and installed with the plurality of guide ridges 16. The transmission thread sleeve 13 is slidably connected to the ruler frame body 1 through the plurality of guide ridges 16. One end of the adjusting knob 11 penetrates the ruler frame body 1 and is threadedly connected to the transmission thread sleeve 13. When the adjusting knob 11 is rotated, the transmission thread sleeve 13 can be driven to slide horizontally between the plurality of guide ridges 16;

[0025] A locking cover 15 is installed on one side of the elastic support ring 14. The locking cover 15 is installed on the outer side of the anvil body 12 to be measured and is connected to the ruler frame body 1 through a thread. The anvil body 12 to be measured and the locking cover 15 are slidably connected through the elastic support ring 14, so that the transmission threaded sleeve 13 pushes the anvil body 12 to be measured to be adjusted laterally on the inner side of the elastic support ring 14 and the locking cover 15, thereby being able to accurately adjust the distance between the anvil body 12 to be measured and the calibrator 2.

[0026] Three adjusting screw holes 10 are provided on the outer side of the end of the protective shell 6 away from the positioning axis 5, and screws are provided in the adjusting screw holes 10, so that the laser light source body 7 is connected to the protective shell 6 by three screws, and the laser light source body 7 can be adjusted on the inner side of the protective shell 6 by rotating the three screws, so that the coaxiality of the laser light of the laser light source body 7 of the calibrator 2 and the positioning axis 5 is 1:1000; then the calibrator 2 and the adjustable anvil 3 to be measured are respectively installed on the two ends of the ruler frame body 1, specifically, one end of the positioning axis 5 passes through the mounting sleeve 4 and the ruler frame body 1 and is locked and installed with the ruler frame body 1 by a nut, and a wire installation port 8 is provided on one side of the protective shell 6, and the laser light source body 7 is connected to the power supply through the wire installation port 8, and the laser is irradiated to the end of the anvil body 12 to be measured through the laser light source body 7, so that the straightness of the ruler frame body 1 can be measured intuitively.

[0027] A light spot reference mark (not shown in the figure) is provided at the center of the end of the anvil body 12 to be measured facing the laser light source body 7. When the laser light source body 7 irradiates the laser to the end of the anvil body 12 to be measured, the relative offset direction of the actual straightness and the ideal straightness of the ruler frame body 1 can be directly obtained. The light spot reference mark can be a simple circular target, a cross-shaped target or a target of other shapes, and can also be used to set an angle parameter of a circle with the center of the target as the center of the circle. Therefore, while obtaining the relative offset direction of the actual straightness and the ideal straightness of the ruler frame body 1, it is also possible to know whether the specific offset angle is within the error range; further, the distance parameter can be marked along each angle parameter line with the center of the target as the starting point, so that the actual straightness offset distance of the ruler frame body 1 can also be known.

[0028] The measured anvil body 12 is adjusted according to the distance displayed by the irradiation, and the transmission threaded sleeve 13 is slidably connected to the ruler frame body 1 through the guide ridges 16. By rotating the adjusting knob 11, the adjusting knob 11 drives the transmission threaded sleeve 13 to slide horizontally between multiple guide ridges 16. The measured anvil body 12 is connected to the locking cover 15 through the elastic support ring 14, so that the transmission threaded sleeve 13 pushes the measured anvil body 12 to be horizontally adjusted on the inner side of the elastic support ring 14 and the locking cover 15, thereby meeting the precise adjustment of the distance between the measured anvil body 12 and the calibrator 2, thereby realizing the zeroing operation of the measured anvil body 12 on the inner side of the ruler frame body 1.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A device for measuring the straightness of a micrometer frame, comprising a frame body (1), characterized in that: A mounting sleeve (4) is installed on the inner side of one end of the ruler frame body (1), a calibrator (2) is installed on the inner side of the mounting sleeve (4), the calibrator (2) comprises a protective shell (6), a positioning shaft (5) is fixedly installed on one end of the protective shell (6), an outer surface of one end of the positioning shaft (5) is provided with an external thread (9), a wire installation port (8) is provided on one side of the protective shell (6), a laser light source body (7) is installed on the inner side of the protective shell (6), and three adjustment screw holes (10) are provided on the outer side of one end of the protective shell (6) away from the positioning shaft (5); The inner wall of the other end of the ruler frame body (1) is provided with a plurality of guide ridges (16), and an adjustable anvil (3) to be measured is installed on the inner side of the plurality of guide ridges (16).

2. A device for measuring the straightness of a micrometer frame according to claim 1, characterized in that: The adjustable anvil (3) comprises an anvil body (12), an elastic support ring (14) is movably mounted on the outer side of the anvil body (12), a locking cover (15) is mounted on one side of the elastic support ring (14), a transmission thread sleeve (13) is movably mounted on one end of the anvil body (12), and an adjusting knob (11) is rotatably connected to the inner side of the transmission thread sleeve (13).

3. A device for measuring the straightness of a micrometer frame according to claim 2, characterized in that: The locking cover (15) is sleeved and installed on the outside of the measured anvil body (12) and is connected to the ruler frame body (1) through threads. The measured anvil body (12) and the locking cover (15) are slidably connected through an elastic support ring (14).

4. A device for measuring the straightness of a micrometer frame according to claim 2, characterized in that: The transmission threaded sleeve (13) is mounted in a chimeric pattern with a plurality of guide ridges (16); the transmission threaded sleeve (13) is slidably connected to the ruler frame body (1) via the plurality of guide ridges (16); one end of the adjustment knob (11) passes through the ruler frame body (1) and is threadedly connected to the transmission threaded sleeve (13).

5. The device for measuring the straightness of a micrometer frame according to claim 2, characterized in that: A light spot reference mark is provided at the center of the end of the anvil body (12) to be measured facing the laser light source body (7).

6. The device for measuring the straightness of a micrometer frame according to claim 1, characterized in that: A nut is provided on the outside of the external thread (9); one end of the positioning shaft (5) passes through the mounting sleeve (4) and the ruler frame body (1) in sequence and is connected to the nut via a thread; the positioning shaft (5) is fixedly connected to the ruler frame body (1) via the nut.

7. The device for measuring the straightness of a micrometer frame according to claim 1, characterized in that: A screw is provided on the inner side of the adjusting screw hole (10), and the screw is connected to the protective shell (6) via a thread, and the laser light source body (7) is movably connected to the protective shell (6) via three screws.

Images