Multipurpose caliper

Abstract

The utility model relates to the technical field of measuring tool detection, and provides a multipurpose caliper, which comprises a vernier caliper, a first measuring part, a measured part and a second measuring part, the fixed foot end of the vernier caliper is clamped and connected with a first measuring part; the movable foot end of the vernier caliper is clamped and connected with a second measuring part; the first measuring part and the second measuring part abut against and are connected with a middle measured part. The first measuring part and the second measuring part are symmetrically arranged and located on the same axis. According to the utility model, the detachable measuring part is arranged on the jaw of the vernier caliper, so that the use function and shape of the conventional caliper do not need to be changed and damaged; the improved ruler can measure the size of a groove on an outer circle and various wall thickness sizes, and the measurement precision is equal to the precision of a caliper. The size of the groove in the inner hole can be measured by turning the measuring head of the measuring part, the dismounting is convenient, the precision is the same, the cost is saved, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a multipurpose caliper belongs to measuring instrument detection technical field. BACKGROUND

[0002] Vernier caliper is the most commonly used length measuring instrument in industrial manufacturing. Vernier caliper is composed of a main ruler and a vernier that can slide on the main ruler. The main ruler is generally in millimeter units, and according to the different vernier divisions, the vernier caliper can be divided into ten-degree vernier caliper, twenty-degree vernier caliper, fifty-degree vernier caliper, etc. The Chinese utility model patent with patent number CN201420121828.8 discloses a vernier caliper with improved measuring claw, which can solve the problem that the resolution of the existing digital vernier caliper is not accurate enough for fine measurement, which is not conducive to actual measurement.

[0003] However, the inventors of the utility model find that the prior art has the following problems: many products need special rulers to measure, such as wall thickness, deep hole and groove inside the hole. Previously, employees often use old rulers to modify and weld measuring heads, which only solves the current measurement needs, but also damages the original function. The welded ruler has great limitations and cannot restore the previous measurement function. Moreover, it can only measure one type of product. The company needs to purchase various special measuring instruments at a large cost, which wastes time and money and greatly reduces efficiency. Therefore, improvement is needed. SUMMARY

[0004] To solve the above technical problems, the utility model provides a multipurpose caliper, which does not change and damage the use function and shape of the previous caliper, saves cost and improves production quality efficiency.

[0005] The utility model is realized through the following technical schemes.

[0006] The utility model provides a multipurpose caliper, which includes a vernier caliper, a first measuring component, a measured part and a second measuring component. The first measuring component is clamped and connected to the end of the fixed foot of the vernier caliper. The second measuring component is clamped and connected to the end of the moving foot of the vernier caliper. The first measuring component and the second measuring component are connected to the measured part in the middle. The first measuring component and the second measuring component are symmetrically arranged on the same axis. The measured part has a circular ring shape, and one side surface is provided with a cut edge notch, and the other side surface is provided with a circular counterbore. The end surface of the first measuring component is vertically in contact with the surface of the cut edge notch. The end surface of the second measuring component is vertically in contact with the bottom surface of the circular counterbore. The first measuring component includes a clamping block, a fastening bolt and a contact rod. The fastening bolt is locked and connected to the surface of the clamping block. The clamping block end surface is fixedly connected with the contact rod.

[0007] The clamping block comprises a conical through hole, a threaded hole and a rectangular through slot; the rectangular through slot is arranged in the middle of the clamping block; the conical through hole is arranged on one side surface of the clamping block, and the threaded hole is arranged on the other side surface; and the conical through hole and the threaded hole are coaxially arranged.

[0008] The end surface of the clamping block is provided with a second threaded hole, and the second threaded hole is threadedly connected with the end of the contact rod.

[0009] The connecting position of the end surface and the circular arc side surface of the clamping block is symmetrically provided with a circular arc surface.

[0010] The contact rod comprises a threaded rod, a tightening section and a smooth rod; the tightening section is arranged in the middle of the contact rod; the threaded rod is arranged on one side of the tightening section, and the smooth rod is arranged on the other side.

[0011] The transition zone of the surface and the end surface of the smooth rod is provided with a second circular arc surface.

[0012] The first measuring component and the second measuring component are of the same structure.

[0013] The utility model discloses the beneficial effect lies in: through the claw installation detachable measuring component of vernier caliper, need not change and destroy the use function and shape of previous caliper, the improved ruler can measure the recess size on the external circle and various wall thickness size, and the measuring precision is equivalent with the precision of the caliper, and the measuring component turns the measuring head and can also measure the recess size in the hole, convenient to disassemble, the precision is same, can save the cost and improve production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall structure diagram of the utility model;

[0015] Figure 2 It is Figure 1 The structure diagram of the first measuring component in it;

[0016] Figure 3 It is Figure 2 The structure diagram of the clamping block in it;

[0017] Figure 4 It is Figure 1 The structure diagram of the measured part in it.

[0018] In the drawing: 1-vernier caliper, 2-first measuring component, 21-clamping block, 211-conical through hole, 212-threaded hole, 213-rectangular through slot, 214-second threaded hole, 215-circular arc surface, 22-fastening bolt, 23-contact rod, 231-threaded rod, 232-tightening section, 233-smooth rod, 234-second circular arc surface, 3-measured part, 31-kerf notch, 32-circular counterbore, 4-second measuring component. DETAILED DESCRIPTION

[0019] The technical scheme of the utility model is further described below, but the scope of protection is not limited to the description.

[0020] The first embodiment of the utility model relates to Figures 1-4 As shown in a kind of multipurpose caliper, including vernier caliper 1, first measuring component 2, measured part 3 and second measuring component 4;Vernier caliper 1 fixed foot end clamping connection has first measuring component 2;Vernier caliper 1 mobile foot end clamping connection has second measuring component 4;First measuring component 2 and second measuring component 4 are connected to the measured part 3 in middle;First measuring component 2 and second measuring component 4 are symmetrically arranged and located on the same axis;Measured part 3 appearance is circular ring, and one side surface is equipped with cutting edge gap 31, and the other side surface is equipped with circular counterbore 32;The end surface of first measuring component 2 is vertically contacted with the surface of cutting edge gap 31;The end surface of second measuring component 4 is vertically contacted with the bottom surface of circular counterbore 32;First measuring component 2 includes clamping block 21, fastening bolt 22 and contact rod 23;Fastening bolt 22 is locked and connected on the surface of clamping block 21;Clamping block 21 end surface fixedly connected with contact rod 23;Vernier caliper 1 is used to measure the size of measured part 3;First measuring component 2 and second measuring component 4 are mainly used to realize the size that ordinary vernier caliper 1 is difficult to measure, for example, groove size on outer circle;The size of measured part 3 is generally difficult to measure;First measuring component 2 contacts with cutting edge gap 31;Second measuring component 4 can easily enter the bottom surface of circular counterbore 32, and the measurement of difficult-to-measure size is completed;Clamping block 21 is used to clamp the jaw of vernier caliper 1;Fastening bolt 22 is used to lock clamping block 21;Contact rod 23 is directly contacted with measured part 3.

[0021] Clamping block 21 includes tapered through hole 211, threaded hole 212 and rectangular through slot 213;Rectangular through slot 213 is arranged in the middle of clamping block 21;One side surface of clamping block 21 is provided with tapered through hole 211, and the other side surface is provided with threaded hole 212, and tapered through hole 211 and threaded hole 212 are coaxially arranged;Tapered through hole 211 is used for placing through fastening bolt 22;Threaded hole 212 is used for threaded connection with fastening bolt 22;Rectangular through slot 213 is used for placing the jaw of vernier caliper 1.

[0022] Second threaded hole 214 is arranged on the end surface of clamping block 21, and is used for fixing contact rod 23;Second threaded hole 214 is threadedly connected with the end part of contact rod 23.

[0023] Arc surface 215 is symmetrically arranged at the connection between the end surface of clamping block 21 and arc side surface, to avoid interference with measured part 3, and better detect measured size.

[0024] The contact rod 23 comprises a threaded rod 231, a tightening section 232 and a light rod 233; the contact rod 23 is provided with the tightening section 232 in the middle; the tightening section 232 is provided with the threaded rod 231 on one side and the light rod 233 on the other side; the threaded rod 231 is used for fixedly connecting the contact rod 23; the tightening section 232 is a torque force point of the contact rod 23, and the light rod 233 is a measuring part.

[0025] The transition zone between the surface and the end face of the light rod 233 is provided with a second circular surface 234, so that the measured surface inside the small hole can be better measured, and interference and measurement failure can be avoided.

[0026] The first measuring component 2 and the second measuring component 4 are the same in structure and are located on the same axis, so that the authenticity and stability of the measurement data can be ensured.

[0027] According to the shape change of the measured part 3, the shape of the contact rod 23 can also change, including the length, thickness and shape of the light rod 233 and the diameter of the second circular surface 234; meanwhile, the clamping blocks 21 in the first measuring component 2 and the second measuring component 4 can be reversely installed, so as to measure the difficult-to-measure size of the measured part 3 with other shapes.

[0028] Based on this, a typical working process of the utility model is as follows:

[0029] When the utility model is implemented, as shown in the figure, Figures 1-4 the rectangular through slot 213 at the clamping block 21 in the first measuring component 2 is placed on the fixed jaw of the vernier caliper 1, and the clamping block 21 is locked by the fastening bolt 22 at the same time; similarly, the second measuring component 4 is also locked, so that the contact rods 23 in the first measuring component 2 and the second measuring component 4 are located on the same axis, the end face of one contact rod 23 is tightly abutted against the surface of the cut edge gap 31, and the end face of the other contact rod 23 is tightly abutted against the bottom surface of the circular counterbore 32; the value displayed on the vernier caliper is the value to be measured.

Claims

1. A multi-purpose caliper, characterized in that: The invention comprises a vernier caliper (1), a first measuring component (2), a measured part (3) and a second measuring component (4); the fixed foot end of the vernier caliper (1) is clamped and connected to the first measuring component (2); the movable foot end of the vernier caliper (1) is clamped and connected to the second measuring component (4); the first measuring component (2) and the second measuring component (4) are tightly connected to the measured part (3) in the middle; the first measuring component (2) and the second measuring component (4) are symmetrically arranged and located on the same axis; the measured part (3) has a circular shape, A cutting notch (31) is provided on one side surface, and a circular countersunk hole (32) is provided on the other side surface; the end surface of the first measuring component (2) is in vertical contact with the surface of the cutting notch (31); the end surface of the second measuring component (4) is in vertical contact with the bottom surface of the circular countersunk hole (32); the first measuring component (2) includes a clamping block (21), a fastening bolt (22) and a contact rod (23); the fastening bolt (22) is locked and connected to the surface of the clamping block (21); and the end surface of the clamping block (21) is fixedly connected to the contact rod (23).

2. The multi-purpose caliper according to claim 1, wherein: The clamping block (21) comprises a tapered through hole (211), a threaded hole (212) and a rectangular through slot (213); a rectangular through slot (213) is provided in the middle of the clamping block (21); a tapered through hole (211) is provided on one side surface of the clamping block (21), and a threaded hole (212) is provided on the other side surface, and the tapered through hole (211) and the threaded hole (212) are coaxially arranged.

3. The multi-purpose caliper according to claim 2, wherein: The end surface of the clamping block (21) is provided with a second threaded hole (214), and the second threaded hole (214) is threadedly connected to the end of the contact rod (23).

4. The multi-purpose caliper according to claim 2, wherein: A circular arc surface (215) is symmetrically provided at the connection between the end surface of the clamping block (21) and the circular arc side surface.

5. The multi-purpose caliper according to claim 1, wherein: The contact rod (23) comprises a threaded rod (231), a tightening section (232) and a polished rod (233); the tightening section (232) is provided in the middle of the contact rod (23); the threaded rod (231) is provided on one side of the tightening section (232), and the polished rod (233) is provided on the other side.

6. The multi-purpose caliper according to claim 5, wherein: A second arc surface (234) is provided in the transition zone between the surface of the polished rod (233) and the end face.

7. The multi-purpose caliper according to claim 1, wherein: The first measuring component (2) and the second measuring component (4) have the same structure.

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