Double-end internal measurement micrometer convenient to overhaul

Abstract

The utility model discloses a double-end internal measuring micrometer convenient for maintenance, which comprises a microdrum, a fixed sleeve, a fixed ring, a guide tube, a measuring claw and a fixed sleeve, one end of the fixed sleeve is sleeved with the microdrum, and the other end of the fixed sleeve is provided with the measuring claw and the guide tube. The guide pipe is detachably installed on the fixing sleeve through the fixing ring and the fixing sleeve, the two sets of measuring claws are arranged on the upper side and the lower side of the guide pipe respectively, the upper side wall, the lower side wall and the front side wall of the guide pipe are each provided with a guide groove, and the measuring claws are correspondingly arranged in the guide grooves in the upper side and the lower side of the guide pipe. A stop screw and a fastening screw are arranged in a guide groove in the front side of the guide pipe. According to the guide pipe structure convenient to disassemble, the fixed connection structure of the measuring claw can be protected, the guide pipe can be disassembled conveniently, the guide pipe can be disassembled and assembled without other tools, worn parts can be checked, repaired or replaced after disassembly, and later maintenance work is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of micrometers, in particular to a double-head internal measuring micrometer which is convenient for maintenance. Background Art

[0002] A double-head internal micrometer is a measuring instrument used for the precise measurement of internal dimensions. It is primarily used to measure internal dimensions such as apertures and slot widths, with an accuracy of up to one thousandth of a millimeter. A double-head internal micrometer has two probes: one fixed and one movable. The movable probe can be adjusted by rotating the differential cylinder to accommodate measurements of varying sizes. While a double-head internal micrometer offers high precision, it can also be affected by a variety of factors, leading to errors in actual measurements. Regular inspection, maintenance, and calibration are required, but current internal micrometers have outer casings that are fixed or screwed together, making them difficult to disassemble for inspection and maintenance. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings of the prior art and to provide a double-head internal measuring micrometer which is easy to repair.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A double-head internal micrometer that is easy to maintain, includes a differential cylinder, a fixed sleeve, a fixed ring, a guide tube, a measuring claw and a fixed sleeve, wherein the differential cylinder is sleeved on one end of the fixed sleeve, and the measuring claw and the guide tube are provided at the other end of the fixed sleeve, and the guide tube is detachably mounted on the fixed sleeve through the fixed ring and the fixed sleeve, and two groups of measuring claws are provided, which are respectively arranged on the upper and lower sides of the guide tube, and guide grooves are provided on the upper and lower sides and the front side wall of the guide tube, and measuring claws are correspondingly provided in the guide grooves on the upper and lower sides of the guide tube, and a stop screw and a fastening screw are provided in the guide groove on the front side of the guide tube.

[0006] One end of the guide tube is provided with an external threaded opening, which is threadedly connected to the end cap; the inner wall of the other end of the guide tube is provided with an internal thread, the internal threaded end of the guide tube is sleeved in the fixing ring, and the internal threaded end of the guide tube is threadedly connected to the fixing sleeve.

[0007] The fixing sleeve is provided with a threaded sleeve corresponding to the internal thread of the guide tube.

[0008] One side of the guide groove is closed, and the other side of the guide groove is open. The open side of the guide groove is arranged at one end of the internal thread of the guide groove; it is convenient to disassemble and install the entire guide pipe.

[0009] The measuring jaws include a fixed measuring jaw and a movable measuring jaw. The fixed measuring jaw is connected to a shaft sleeve connected to a fixed sleeve through a fastening screw, and the movable measuring jaw is connected to a threaded bushing at the front end of a micrometer screw connected to a differential cylinder.

[0010] The beneficial effects of the utility model are as follows: the guide tube structure is easy to disassemble, which not only protects the fixed connection structure of the measuring claw, but also allows for easy disassembly. The guide tube can be disassembled and installed without the aid of other tools. After disassembly, worn parts can be inspected, repaired or replaced, which facilitates subsequent maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front structural diagram of the present utility model;

[0012] Figure 2 This is a rear structural diagram of the utility model;

[0013] Figure 3 It is a partial structural diagram of the utility model;

[0014] In the figure: 1. Differential cylinder; 2. Fixed sleeve; 3. Fixed ring; 4. Guide tube; 41. Guide groove A; 42. Guide groove B; 43. Guide groove C; 44. Internal thread; 45. External thread mouth; 5. Fixed sleeve; 6. End cap; 7. Fixed measuring jaw A; 8. Movable measuring jaw A; 9. Fixed measuring jaw B; 10. Movable measuring jaw B; 11. Stop screw; 12. Fastening screw. DETAILED DESCRIPTION

[0015] The following is a clear and complete description of the technical solution of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0016] Example 1

[0017] In conjunction with the drawings and description of the drawings, the utility model provides a double-head internal micrometer that is easy to maintain, and its structure is as follows: it includes a differential cylinder 1, a fixed sleeve 5 tube 2, a fixed ring 3, a guide tube 4, a measuring claw and a fixed sleeve 5, one end of the fixed sleeve 5 tube 2 is sleeved with the differential cylinder 1, and the other end of the fixed sleeve 5 tube 2 is provided with a measuring claw and a guide tube 4, the guide tube 4 is detachably mounted on the fixed sleeve 5 tube 2 through the fixed ring 3 and the fixed sleeve 5, two groups of measuring claws are provided, respectively, which are arranged on the upper and lower sides of the guide tube 4, and guide grooves are provided on the upper and lower sides and the front side wall of the guide tube 4, the front side of the guide tube 4 is a guide groove A41, the upper side of the guide tube 4 is a guide groove B42, and the lower side of the guide tube 4 is a guide groove C43, and measuring claws are respectively provided in the guide grooves B42 and C43 on the upper and lower sides of the guide tube 4, and a stop screw 11 and a fastening screw 12 are provided in the guide groove A41 on the front side of the guide tube 4;

[0018] One end of the guide tube 4 is provided with an external threaded opening 45, which is threadedly connected to the end cap 6; the other end of the guide tube 4 is provided with an internal thread 44 on the inner wall, and the internal thread 44 end of the guide tube 4 is sleeved in the fixing ring 3, and the internal thread 44 end of the guide tube 4 is threadedly connected to the fixing sleeve 5;

[0019] The fixing sleeve 5 is provided with a threaded sleeve corresponding to the internal thread 44 of the guide tube 4;

[0020] One side of the guide groove is closed, and the other side of the guide groove is open. The open side of the guide groove is arranged at one end of the internal thread 44 of the guide groove; it is convenient to disassemble and install the entire guide tube 4;

[0021] The measuring jaws include a fixed measuring jaw and a movable measuring jaw. The fixed measuring jaw is connected to the shaft sleeve connected to the fixed sleeve 5 and the tube 2 by a fastening screw 12, and the movable measuring jaw is connected to the threaded bushing at the front end of the micrometer screw connected to the differential cylinder 1;

[0022] The guide groove B42 is equipped with a fixed measuring jaw A7 and a movable measuring jaw A8, and the guide groove C43 is equipped with a fixed measuring jaw B9 and a movable measuring jaw B10. The fixed measuring jaw A7 and the movable measuring jaw A8 are small-range measuring jaws with a measuring range of 5-30mm, and the fixed measuring jaw B9 and the movable measuring jaw B10 are large-range measuring jaws with a measuring range of 30-55mm.

[0023] Specifically, when the double-head internal micrometer needs to be inspected, repaired or maintained, first unscrew the fixing sleeve 5 and pull the guide tube 4 backward for inspection, repair or maintenance. After completion, align the guide groove of the guide tube 4 with the measuring claw and the stop screw 11 respectively, insert the front end of the guide tube 4 into the fixing ring 3, and tighten it with the fixing sleeve 5.

Claims

1. A double-head internal micrometer that is easy to maintain, characterized by: It includes a differential cylinder, a fixed sleeve, a fixed ring, a guide tube, a measuring claw and a fixed sleeve. The differential cylinder is sleeved on one end of the fixed sleeve, and the measuring claw and the guide tube are provided at the other end of the fixed sleeve. The guide tube is detachably mounted on the fixed sleeve through the fixed ring and the fixed sleeve. There are two groups of measuring claws, which are respectively arranged on the upper and lower sides of the guide tube. Guide grooves are provided on the upper and lower sides and the front side wall of the guide tube. Measuring claws are correspondingly arranged in the guide grooves on the upper and lower sides of the guide tube. A stop screw and a fastening screw are provided in the guide groove on the front side of the guide tube.

2. A double-head internal micrometer easy to maintain according to claim 1, characterized in that: One end of the guide tube is provided with an external threaded opening, which is threadedly connected to the end cap; the inner wall of the other end of the guide tube is provided with an internal thread, the internal threaded end of the guide tube is sleeved in the fixing ring, and the internal threaded end of the guide tube is threadedly connected to the fixing sleeve.

3. The double-head internal micrometer easy to maintain according to claim 2, characterized in that: The fixing sleeve is provided with a threaded sleeve corresponding to the internal thread of the guide tube.

4. The double-head internal micrometer easy to maintain according to claim 3, characterized in that: One side of the guide groove is closed, and the other side of the guide groove is open. The open side of the guide groove is arranged at one end of the internal thread of the guide groove.

5. The double-head internal micrometer easy to maintain according to claim 4, characterized in that: The measuring jaws include a fixed measuring jaw and a movable measuring jaw. The fixed measuring jaw is connected to a shaft sleeve connected to a fixed sleeve through a fastening screw, and the movable measuring jaw is connected to a threaded bushing at the front end of a micrometer screw connected to a differential cylinder.

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