Novel combined outside micrometer

Abstract

The utility model belongs to the technical field of measuring instruments, and particularly discloses a novel combined outside micrometer, which comprises a fixed ruler frame, a digital display meter is mounted on the fixed ruler frame, a micrometric screw is rotatably connected onto the digital display meter, a fixed sleeve is sleeved on the rear side of the micrometric screw, and a microdrum and a force measuring knob are arranged on the rear side of the fixed sleeve. The front side of the micrometric screw is detachably connected with the rear measuring anvil, the front side of the fixed ruler frame is detachably connected with the front measuring anvil, and the rear measuring anvil and the front measuring anvil are coaxially arranged, so that the measuring range of the micrometer is more flexible, and the micrometer is suitable for measuring workpieces of different sizes. Specifically, the micrometric screw is connected to the rear measuring anvil head in a magnetic attraction mode, and the fixed ruler frame is connected to the front measuring anvil head in a magnetic attraction mode, so that the measuring anvil heads can be rapidly installed and detached, and the measuring efficiency and convenience are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of measuring instruments, in particular to a novel combined outside diameter micrometer. Background Art

[0002] As a high-precision measuring tool, the outside micrometer is widely used in industrial production. In actual industrial production, it is often necessary to measure the size of special-shaped workpieces, but due to the limitations of the measuring anvil, ruler frame structure and size, some special-shaped workpieces cannot be measured, and there are large errors when measuring arc workpieces.

[0003] In order to solve these problems, different measuring anvils are usually used to meet the measurement requirements of special-shaped workpieces. However, there are many difficulties in replacing the measuring anvil of the existing outside diameter micrometer. On the one hand, due to the limitations of the scale frame structure, replacing the measuring anvil becomes extremely complicated and even requires professional tools and technical support. On the other hand, the measuring anvils used by different models of micrometers may not be universal, resulting in users having to purchase specific models of measuring anvils when replacing them, which increases the cost of use. Utility Model Content

[0004] In view of the problem that the external diameter micrometer in the prior art is difficult to adapt to the measurement requirements of special-shaped workpieces and it is inconvenient to replace the measuring anvil head, a new type of combined external diameter micrometer is proposed. The utility model provides the following technical solutions:

[0005] A novel combined outside micrometer comprises a fixed scale frame, on which a digital display is mounted, on which a micrometer screw is rotatably connected, a fixed sleeve is sleeved on the rear side of the micrometer screw, a differential cylinder and a force measuring knob are arranged on the rear side of the fixed sleeve, a rear measuring anvil is detachably connected to the front side of the micrometer screw, a front measuring anvil is detachably connected to the front side of the fixed scale frame, and the rear measuring anvil and the front measuring anvil are coaxially arranged.

[0006] Preferably, the micrometer screw is magnetically connected to the rear measuring anvil, and the fixed ruler frame is magnetically connected to the front measuring anvil.

[0007] Preferably, a positioning hole is provided in the fixed ruler frame, a first magnetic ring is provided outside the positioning hole, a second magnetic ring is provided outside the first magnetic ring, and a first plug which is plugged into the positioning hole is fixedly connected to the end of the front measuring anvil.

[0008] Preferably, a first annular mounting groove and a second annular mounting groove are provided on the fixed ruler frame, the first magnetic ring is embedded and installed in the first annular mounting groove, and the second magnetic ring is embedded and installed in the second annular mounting groove.

[0009] Preferably, the end surface of the first magnetic ring is arranged flush with the outer side surface of the first annular mounting groove.

[0010] Preferably, the end face of the second magnetic ring is arranged on the inner side of the second annular mounting groove, and a first positioning ring for being inserted into the second annular mounting groove and closely attached to the second magnetic ring is arranged on the outer side of the first plug.

[0011] Preferably, the notch of the second annular mounting groove is chamfered.

[0012] Preferably, the first plug comprises a head, a rod and a base, the head and the base are conical, the rod is cylindrical, and the maximum diameter of the head is equal to the minimum diameter of the base.

[0013] Preferably, the digital display is slidably connected to the fixed scale frame and a fixed knob for locking the digital display is threadedly connected to the digital display.

[0014] Preferably, the micrometer screw is connected to one side of the digital display, and the other side of the digital display is connected to the rear measuring anvil through a magnetic connection rod.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The micrometer screw is magnetically connected to the rear measuring anvil, and the fixed scale frame is magnetically connected to the front measuring anvil, so that the measuring anvil can be quickly installed and disassembled, which greatly improves the efficiency and convenience of measurement; a positioning hole is provided in the fixed scale frame, a first magnetic ring is provided on the outside of the positioning hole, and a second magnetic ring is provided on the outside of the first magnetic ring; a first plug that is plugged into the positioning hole is fixedly connected to the end of the front measuring anvil, ensuring a stable connection between the front measuring anvil and the fixed scale frame, while improving the measurement accuracy; a first positioning ring is provided on the outside of the first plug, and the first positioning ring can be more stably inserted into the second annular mounting groove to achieve accurate coaxial positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the connection structure of the fixed ruler frame and the front measuring anvil head of the utility model;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the connection structure of the fixed ruler frame and the front measuring anvil head of the utility model;

[0020] In the accompanying drawings, 1, front measuring anvil; 2, measured workpiece; 3, rear measuring anvil; 4, micrometer screw; 5, fixed sleeve; 6, differential cylinder; 7, force measuring knob; 8, fixed knob; 9, digital display; 10, fixed scale frame; 101, positioning hole; 102, second annular mounting groove; 11, first positioning ring; 12, first plug; 121, head; 122, rod; 123, base; 13, first magnetic ring; 14, second magnetic ring; 15, magnetic connecting rod. DETAILED DESCRIPTION

[0021] The directional words mentioned in the following embodiments, such as "up", "down", "left", "right", etc., are only referenced to the directions of the drawings. Therefore, the directional words used are used to illustrate rather than limit the invention of the utility model.

[0022] like Figure 1-3 As shown, a novel combined outside diameter micrometer includes a fixed scale frame 10, a digital display 9 is installed on the fixed scale frame 10, a micrometer screw 4 is rotatably connected to the digital display 9, a fixed sleeve 5 is sleeved on the rear side of the micrometer screw 4, and a differential cylinder 6 and a force measuring knob 7 are arranged on the rear side of the fixed sleeve 5. The front side of the micrometer screw 4 is detachably connected to the rear measuring anvil 3, and the front side of the fixed scale frame 10 is detachably connected to the front measuring anvil 1. The rear measuring anvil 3 and the front measuring anvil 1 are coaxially arranged, so that the measuring range of the micrometer is more flexible and suitable for measuring workpieces of different sizes. Specifically, the micrometer screw 4 is magnetically connected to the rear measuring anvil 3, and the fixed scale frame 10 is magnetically connected to the front measuring anvil 1, so that the measuring anvil can be quickly installed and disassembled, which greatly improves the efficiency and convenience of measurement.

[0023] Specifically, a positioning hole 101 is provided in the fixed ruler frame 10, a first magnetic ring 13 is provided outside the positioning hole 101, a second magnetic ring 14 is provided outside the first magnetic ring 13, and a first plug 12 is fixedly connected to the end of the front measuring anvil 1 and plugged into the positioning hole 101, thereby ensuring a stable connection between the front measuring anvil 1 and the fixed ruler frame 10 and improving the measurement accuracy.

[0024] Specifically, a first annular mounting groove and a second annular mounting groove 102 are provided on the fixed ruler frame 10, the first magnetic ring 13 is embedded and installed in the first annular mounting groove, and the second magnetic ring 14 is embedded and installed in the second annular mounting groove 102, which is both stable and convenient for maintenance, making the magnetic connection more reliable.

[0025] Specifically, the end surface of the first magnetic ring 13 is flush with the outer side surface of the first annular mounting groove. Such a design can ensure a close fit between the magnetic ring and the mounting groove, thereby avoiding loss of magnetic attraction.

[0026] Specifically, the end face of the second magnetic ring 14 is arranged on the inner side of the second annular mounting groove 102, and the outer side of the first plug 12 is provided with a first positioning ring 11 for being inserted into the second annular mounting groove 102 and tightly attached to the second magnetic ring 14, so that the first positioning ring 11 can be more stably inserted into the second annular mounting groove 102 to achieve accurate coaxial positioning. At the same time, the first positioning ring 11 can ensure the close fit between the plug and the second magnetic ring 14, thereby improving the magnetic attraction strength. At the same time, the first plug 12 and the first positioning ring 11 can improve the radial impact resistance and realize radial limitation.

[0027] Specifically, the notch of the second annular installation groove 102 is chamfered, which can facilitate the insertion of the first positioning ring 11 and reduce wear and resistance.

[0028] Specifically, the first plug 12 includes a head 121, a rod 122 and a base 123. The head 121 and the base 123 are conical, the rod 122 is cylindrical, and the maximum diameter of the head 121 is equal to the minimum diameter of the base 123, which can ensure a close fit between the first plug 12 and the positioning hole 101 and improve the stability of the connection.

[0029] Specifically, the digital display 9 is slidably connected to the fixed ruler frame 10 and a fixed knob 8 for locking the digital display 9 is threadedly connected to the digital display 9. This design enables the digital display 9 to adjust its position as needed and be locked in a suitable position by the fixed knob 8, which is convenient for reading and measuring.

[0030] Specifically, the micrometer screw 4 is connected to one side of the digital display 9, and the other side of the digital display 9 is connected to the rear measuring anvil 3 through the magnetic connecting rod 15, so that the connection between the digital display 9 and the rear measuring anvil 3 is more stable, and it is convenient for measurement and adjustment; and specifically, the connection method adopted by the magnetic connecting rod 15 and the rear measuring anvil 3 is the same as the connection method adopted by the fixed ruler frame 10 and the front measuring anvil 1, and both can achieve quick and accurate connection.

[0031] The workpiece 2 to be measured is located between the front measuring anvil 1 and the rear measuring anvil 3. The front measuring anvil 1 and the rear measuring anvil 3 can be selected with appropriate specifications according to the needs. The measuring anvils of various specifications adopt the same connection structure, so they can be quickly replaced. When in use, select and replace the appropriate front measuring anvil 1 and the rear measuring anvil 3, and adsorb them on the fixed ruler frame 10 and the magnetic connection rod 15 respectively; pull open the digital display 9, and put the workpiece 2 to be measured between the front measuring anvil 1 and the rear measuring anvil 3. Push the digital display 9 close to the workpiece 2 to be measured; twist the force measuring knob 7 until the front measuring anvil 1 and the rear measuring anvil 3 clamp the workpiece 2 to be measured, and the force measuring knob 7 makes a clicking sound, and lock the fixed knob 8 to read the value displayed on the digital display 9 minus the length of the measuring anvils on both sides, which is the thickness of the workpiece 2 to be measured.

Claims

1. A novel combined outside micrometer comprises a fixed scale frame (10), a digital display (9) is mounted on the fixed scale frame (10), a micrometer screw (4) is rotatably connected to the digital display (9), a fixed sleeve (5) is sleeved on the rear side of the micrometer screw (4), a differential cylinder (6) and a force measuring knob (7) are arranged on the rear side of the fixed sleeve (5), and the characteristic is that: The front side of the micrometer screw (4) is detachably connected to a rear measuring anvil (3), the front side of the fixed ruler frame (10) is detachably connected to a front measuring anvil (1), and the rear measuring anvil (3) and the front measuring anvil (1) are coaxially arranged.

2. The novel combined outside micrometer according to claim 1 is characterized in that: The micrometer screw (4) is magnetically connected to the rear measuring anvil (3), and the fixed ruler frame (10) is magnetically connected to the front measuring anvil (1).

3. The novel combined outside micrometer according to claim 2 is characterized in that: A positioning hole (101) is provided in the fixed ruler frame (10), a first magnetic ring (13) is provided outside the positioning hole (101), a second magnetic ring (14) is provided outside the first magnetic ring (13), and a first plug (12) pluggably mated with the positioning hole (101) is fixedly connected to the end of the front measuring anvil head (1).

4. The novel combined outside micrometer according to claim 3 is characterized in that: The fixed ruler frame (10) is provided with a first annular mounting groove and a second annular mounting groove (102), the first magnetic ring (13) is embedded and mounted in the first annular mounting groove, and the second magnetic ring (14) is embedded and mounted in the second annular mounting groove (102).

5. The novel combined outside micrometer according to claim 4 is characterized in that: The end surface of the first magnetic attraction ring (13) is arranged flush with the outer side surface of the first annular installation groove.

6. The novel combined outside micrometer according to claim 4 or 5, characterized in that: The end surface of the second magnetic ring (14) is arranged inside the second annular installation groove (102), and the outside of the first plug (12) is provided with a first positioning ring (11) for being inserted into the second annular installation groove (102) and closely attached to the second magnetic ring (14).

7. The novel combined outside micrometer according to claim 6 is characterized in that: The notch of the second annular mounting groove (102) is chamfered.

8. The novel combined outside micrometer according to claim 3 is characterized in that: The first plug (12) comprises a head (121), a rod (122) and a base (123); the head (121) and the base (123) are conical, the rod (122) is cylindrical, and the maximum diameter of the head (121) is equal to the minimum diameter of the base (123).

9. The novel combined outside micrometer according to claim 1 is characterized in that: The digital display (9) is slidably connected to the fixed ruler frame (10), and a fixed knob (8) for locking the digital display (9) is threadedly connected to the digital display (9).

10. The novel combined outside micrometer according to claim 1 is characterized in that: The micrometer screw (4) is connected to one side of the digital display (9), and the other side of the digital display (9) is connected to the rear measuring anvil (3) via a magnetic connection rod (15).

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