A portable needle gauge

Abstract

The present invention belongs to the technical field of measuring tools, and specifically relates to a portable needle gauge. It comprises a needle, a needle holder, a pin shaft, and a holder. The needle is fixed on the needle holder. The needle holder is L-shaped. The needle holders are stacked in groups of 5. Two groups of needle holders are symmetrically stored in the holder. The pin shaft passes through the axial holes of the holder and the needle holder, and the needle holder can rotate around the pin shaft. The present invention can significantly improve the convenience of using, transporting, and storing the needle gauge.

Description

Technical Field

[0001] The invention belongs to the technical field of measuring tools, and in particular relates to a portable needle gauge. Background Art

[0002] The pin gauge is a round bar with a specific size and high hardness made of stainless steel, tool steel, ceramic, tungsten steel, bearing steel or other materials. It is suitable for measuring the size, hole spacing, hole depth, etc. of holes and is a standardized inspection tool for holes.

[0003] Conventional needle gauge designs have the following disadvantages: small size, inconvenient to use, easy to lose, inconvenient to transport and use when stored in a set of storage boxes, and easy to mix up specifications. Summary of the invention

[0004] The purpose of the present invention is to provide a portable needle gauge, which can significantly improve the convenience of using, transporting and storing the needle gauge.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A portable needle gauge comprises a needle, a needle holder, a pin and a retaining frame. The needle is fixed on the needle holder. The needle holder is L-shaped. The needle holders are stacked in groups of 5. Two groups of needle holders are symmetrically stored in the retaining frame. The pin passes through the axial holes of the retaining frame and the needle holder, and the needle holder can rotate around the pin.

[0007] The needle has a measuring range of 0.1-3 mm, an accuracy of ±1 μm, a size interval of 0.01 mm, and surface roughness, hardness, linear expansion coefficient, and appearance technical parameters refer to JB / T10631-2006.

[0008] The size of the needle is marked on the needle holder.

[0009] The pin shaft is a combination of a rotating shaft and a tool-free locking round nut. The outer surface of the round nut is provided with anti-slip grooves and can be locked without tools.

[0010] 1 set of needle gauges includes 10 needles, 10 needle holders, and 2 pins.

[0011] The needle is made of steel, hard alloy or ceramic lamp material.

[0012] The needle holder is made of steel or high molecular polymer material.

[0013] The pin shaft and the retaining frame are made of steel.

[0014] Select 10 needle and needle holder combinations of required specifications and stack them in groups of 5; install the needle and needle holder combination into the retaining frame, and position and lock it with a pin; when using, the needle and needle holder combination of required specifications can be rotated out for size measurement, and the required needle and needle holder combination can also be removed from the retaining frame for size measurement.

[0015] The beneficial effects achieved by the present invention are:

[0016] Compared with the traditional design, this solution can remove a single needle and needle holder for use, and the holder can also be used as a handle. It is easier to operate and less likely to cause problems such as the measuring tool falling or losing.

[0017] Compared with the traditional design, this solution does not require the whole set of needle gauges to be brought to the site of use. Instead, only a small number of needles to be used need to be freely combined into a set and brought to the site of use, which is easy to carry.

[0018] Compared with the traditional design, the needle in this solution is fixed on the needle holder, which is convenient for size marking and reading on the needle holder. The needle gauge will not be mistakenly installed in the wrong specification storage box, thus avoiding human errors and data recording errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a portable needle gauge;

[0020] In the figure: 1, needle; 2, needle holder; 3, pin; 4, retaining frame. DETAILED DESCRIPTION

[0021] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1 As shown, the portable needle gauge of the present invention comprises a needle 1, a needle holder 2, a pin 3, and a holder 4. The needle 1 is fixed on the needle holder 2, and the size of the needle 1 is marked on the needle holder 2. The needle 1 has a measuring range of 0.1-3mm, an accuracy of ±1μm, a size interval of 0.01mm, and technical parameters such as surface roughness, hardness, linear expansion coefficient, and appearance refer to JB / T10631-2006. The needle holder 2 is L-shaped in design, stacked in groups of 5, and 2 groups of needle holders 2 can be symmetrically accommodated in the holder 4. The pin 3 passes through the axial holes of the holder 4 and the needle holder 2, and can be locked by a tool-free locking nut. The needle holder 2 can rotate around the pin 3. The pin 3 is a combination of a rotating shaft and a tool-free locking round nut. The outer surface of the round nut is provided with anti-slip grooves, which can be locked without tools.

[0023] One set of needle gauges includes: 10 needles 1, 10 needle holders 2, 2 pins 3, and 2 retaining frames 4.

[0024] The needle head 1 is made of steel, hard alloy or ceramic lamp material. The needle holder 2 is made of steel or high molecular polymer material. The pin 3 and the retaining frame 4 are made of steel.

[0025] 1) Select 10 needles 1 and needle holders 2 of required specifications and stack them in groups of 5.

[0026] 2) Assemble the needle 1 and needle holder 2 into the retaining frame 4, and position and lock them with the pin 3.

[0027] 3) When in use, the needle 1 and needle holder 2 combination of the required specifications can be unscrewed for size measurement, or the required needle 1 and needle holder 2 combination can be removed from the retaining frame 4 for size measurement.

[0028] 4) Taking the hole diameter measurement as an example, when the pin gauge of specification A passes through the small hole, the pin gauge of specification A+0.01mm cannot pass through the small hole, then the hole diameter is between A-A+0.01mm. Record the measured dimensions and compare them with the design dimensions on the drawing to confirm whether they meet the requirements.

Claims

1. A portable needle gauge, characterized in that: It includes a needle, a needle holder, a pin and a retaining frame. The needle is fixed on the needle holder. The needle holder is L-shaped. The needle holders are stacked in groups of 5. Two groups of needle holders are symmetrically stored in the retaining frame. The pin passes through the axial holes of the retaining frame and the needle holder, and the needle holder can rotate around the pin.

2. The portable needle gauge according to claim 1, characterized in that: The needle has a measuring range of 0.1-3 mm, an accuracy of ±1 μm, and a size interval of 0.01 mm.

3. The portable needle gauge according to claim 1, characterized in that: The size of the needle is marked on the needle holder.

4. The portable needle gauge according to claim 1, characterized in that: The pin shaft is a combination of a rotating shaft and a tool-free locking round nut. The outer surface of the round nut is provided with anti-slip grooves and can be locked without tools.

5. The portable needle gauge according to claim 1, characterized in that: 1 set of needle gauges includes 10 needles, 10 needle holders, and 2 pins.

6. The portable needle gauge according to claim 1, characterized in that: The needle is made of steel, hard alloy or ceramic material.

7. The portable needle gauge according to claim 1, characterized in that: The needle holder is made of steel or high molecular polymer material.

8. The portable needle gauge according to claim 1, characterized in that: The pin shaft and the retaining frame are made of steel.

9. The portable needle gauge according to claim 1, characterized in that: Select 10 needle and needle holder combinations of required specifications and stack them in groups of 5; install the needle and needle holder combination into the retaining frame, and position and lock it with a pin; when using, the needle and needle holder combination of required specifications can be rotated out for size measurement, and the required needle and needle holder combination can also be removed from the retaining frame for size measurement.

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