CN220818837U - Aperture center distance measuring tool - Google Patents

Abstract

The utility model provides a tool for measuring the center distance of an aperture, which relates to the field of measuring the center distance of the aperture, and adopts the following scheme: the measuring device comprises a main scale, wherein an inner clamping claw I and an outer clamping claw I are respectively arranged on the upper side and the lower side of one end of the main scale, a measuring surface of the inner clamping claw I and a measuring surface of the outer clamping claw I are coplanar, an inner clamping claw II and an outer clamping claw II are also movably arranged at corresponding positions of the main scale, locking pieces are respectively arranged on the inner clamping claw II and the outer clamping claw II, the inner clamping claw II and the outer clamping claw II are connected through a swing arm, the swing arm is movably connected with the inner clamping claw II and the outer clamping claw II, a vernier scale is movably arranged on the swing arm, and the vernier scale can also move along the main scale, and a connecting point of the inner clamping claw II and the swing arm and a connecting point of the outer clamping claw II and the swing arm are symmetrical about a zero scale line center of the vernier scale. The utility model can improve the measurement efficiency and the measurement precision.

Description

Aperture center distance measuring tool

Technical Field

The utility model relates to the field of aperture center distance measurement, in particular to an aperture center distance measuring tool.

Background

The aperture center distance plays an important role in the assembly, installation and debugging processes of various mechanical equipment and production lines, and in the processes, future functional faults and losses are often caused by errors, such as a thrust rod, as shown in fig. 1, the aperture center distance dimension L directly relates to the loading precision requirement of the whole vehicle, so that strict measurement methods and fixed standards are required to ensure the accurate positions of all components; in addition, the aperture center distance has very important application value in the manufacturing fields of die manufacturing, part processing and the like, for example, in the die manufacturing process, factories need to ensure accurate positions among holes according to production requirements and manufacturing process schemes, and the drift of the aperture center distance can cause defects of die castings, so that the production efficiency and quality of products are affected.

In the prior art, as shown in fig. 1, the aperture center distance cannot be obtained by direct measurement, and the distance L1 between two adjacent sides of two round holes is measured first, then the distance L2 between two farthest sides is measured, and then the calculation is performed in a mode of L1+ (L2-L1)/2.

By adopting the method to measure the aperture center distance, on one hand, the recording and calculating workload is large, the time consumption is long, the production efficiency of the whole line is reduced, and on the other hand, the measurement errors exist in each measurement of L1 and L2, so that the final aperture center distance error is larger, and the accuracy of the measurement result is not high.

Disclosure of utility model

In order to solve the technical problems of low efficiency and low precision of aperture center distance measurement in the prior art, the utility model provides an aperture center distance measurement tool which can improve measurement efficiency and measurement precision.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides an aperture centre-to-centre spacing measuring tool, includes the main scale, both sides are provided with interior clamping jaw one and outer clamping jaw one respectively about the main scale one end, interior clamping jaw one's measuring surface and outer clamping jaw one's measuring surface coplane, still movably be provided with interior clamping jaw two and outer clamping jaw two on the main scale relevant position, interior clamping jaw two and outer clamping jaw two are gone up and all be provided with the retaining member, interior clamping jaw two and outer clamping jaw two pass through the swing arm and connect, the swing arm with interior clamping jaw two with the equal swing joint of outer clamping jaw, movably be provided with the vernier scale on the swing arm, the vernier scale can also be followed the main scale removes, interior clamping jaw two with the tie point of swing arm with outer clamping jaw two the tie point of swing arm is about the zero scale line central symmetry of vernier scale. The inner clamping jaw II and the outer clamping jaw II are connected through the swing arm, the connecting points of the inner clamping jaw II and the outer clamping jaw II are symmetrically arranged about the vernier zero scale mark, the zero scale mark corresponding value of the vernier scale is L after L1/L2 is measured, the direct measurement of the aperture center distance is realized, the efficiency is high, and the error is small.

Further, the second outer clamping claw is rotatably connected with one end of the swing arm, and the other end of the swing arm is movably connected with the second inner clamping claw.

Further, the second inner clamping claw is rotatably connected with one end of the swing arm, and the other end of the swing arm is movably connected with the second outer clamping claw.

Further, the second inner clamping claw is connected with the swing arm through a pin shaft, a guide groove is formed in the swing arm, the length direction of the guide groove is identical to that of the swing arm, a limiting pin is arranged on the second outer clamping claw and extends into the guide groove, the limiting pin can move in the guide groove, and the pin shaft and the limiting pin are symmetrical with respect to the zero scale mark center of the vernier scale.

Further, a sliding groove is formed in the main scale, the length direction of the sliding groove is parallel to the extending direction of the scales, a connecting pin is vertically arranged on the vernier scale, the connecting pin penetrates through the sliding groove and the guide groove, and a limiting part is arranged at one end, close to the swing arm, of the connecting pin.

Further, one end of the limiting part, which is close to the swing arm, is provided with a guiding part, and the guiding part is positioned on the inner wall of the guiding groove and has sliding friction force with the guiding groove. The vernier scale can be prevented from moving slightly after the inner clamping claw II and the outer clamping claw II are fixed through the guide piece, and the accuracy of measurement reading is affected.

Further, the locking piece adopts the bolt, the axis of locking piece with the length direction of main scale is perpendicular, the bottom of locking piece can with main scale butt.

Further, the second inner clamping claw comprises an inner clamping claw part and a first connecting part, the first connecting part is of a C-shaped structure, the first connecting part is movably arranged at the upper end of the main scale, the locking piece is arranged on the first connecting part, and the inner clamping claw part is rotatably connected with the swing arm.

Further, the second outer clamping claw comprises an outer clamping claw part and a second connecting part, the second connecting part is of a C-shaped structure, the second connecting part is movably arranged at the lower end of the main scale, the locking piece is arranged on the second connecting part, and the outer clamping claw part is movably connected with the swing arm.

Further, the inner clamping claw I, the outer clamping claw I and the main ruler are of an integrated structure.

From the above technical scheme, the utility model has the following advantages:

The utility model provides a measuring tool for the center distance of an aperture, which is characterized in that an inner clamping jaw II and an outer clamping jaw II are connected through a swing arm, and the connection points of the inner clamping jaw II and the outer clamping jaw II are symmetrically arranged about zero graduation marks of a vernier, so that the corresponding value of the zero graduation marks of the vernier after L1/L2 is measured is L, the direct measurement of the center distance of the aperture is realized, the efficiency is high, and the error is small; the vernier scale can be prevented from moving slightly after the inner clamping claw II and the outer clamping claw II are fixed through the guide piece, and the accuracy of measurement reading is affected.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a thrust rod.

Fig. 2 is a schematic structural diagram of a specific embodiment of the present utility model.

Fig. 3 is a schematic structural diagram of a second embodiment of the present utility model.

Fig. 4 is a schematic structural view of the main scale in the embodiment of the present utility model.

Fig. 5 is a schematic structural view of a swing arm according to an embodiment of the present utility model.

Fig. 6 is a schematic structural view of a connecting pin according to an embodiment of the present utility model.

Fig. 7 is a schematic structural view of a limiting member according to an embodiment of the present utility model.

Fig. 8 is a schematic structural view of the inner jaw two in the embodiment of the utility model.

Fig. 9 is a schematic structural view of the outer jaw two in the embodiment of the present utility model.

In the figure, 1, a main scale; 11. a chute; 2. an inner claw II; 21. a pin shaft; 3. an outer claw II; 4. vernier scale; 5. swing arms; 52. a guide groove; 6. a locking member; 7. a connecting pin; 8. a limiting piece; 81. a guide member; 9. an outer claw I; 10. and an inner claw I.

Detailed Description

In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.

As shown in fig. 2 to 4, the present embodiment provides an aperture center distance measuring tool, which includes a main scale 1, an inner clamping claw 10, an inner clamping claw 2, an outer clamping claw 9, an outer clamping claw 3, a swing arm 5 and a vernier 4; the two sides are provided with interior claw first 10 and outer claw first 9 respectively about main scale 1 one end, the measuring surface of interior claw first 10 and the measuring surface of outer claw first 9 are coplanar, still movably be provided with interior claw second 2 and outer claw second 3 on the main scale 1 relevant position, interior claw second 2 can remove relative interior claw first 10, outer claw second 3 can remove relative outer claw first 9, all be provided with retaining member 6 on interior claw second 2 and the outer claw second 3, retaining member 6 can lock interior claw second 2 and outer claw second 3 on main scale 1, interior claw second 2 and outer claw second 3 are connected through swing arm 5, swing arm 5 and interior claw second 2 and outer claw second 3 all swing joint, movably be provided with vernier scale 4 on the swing arm 5, vernier scale 4 can also follow main scale 1 and remove, the tie point of interior claw second 2 and swing arm 5 and tie point of outer claw second 3 and swing arm 5 are symmetrical about the zero scale line center of vernier scale 4. The inner clamping jaw two 2 and the outer clamping jaw two 3 are connected through the swing arm 5, and the connecting points of the inner clamping jaw two and the swing arm 5 are symmetrically arranged about zero scale marks of the vernier, so that the zero scale mark corresponding value of the vernier 4 is the aperture center distance L after L1 and L2 are measured, the aperture center distance is directly measured, the efficiency is high, and the error is small.

As shown in fig. 2 to 5, in order to ensure that the swing arm 5 swings smoothly in the measurement process, the outer jaw two 3 is rotatably connected with one end of the swing arm 5, the other end of the swing arm 5 is movably connected with the inner jaw two 2, in this embodiment, in order to measure L1 and then L2 first, the inner jaw two 2 is rotatably connected with one end of the swing arm 5, the other end of the swing arm 5 is movably connected with the outer jaw two 3, specifically, a pin hole is provided on the inner jaw two 2, a pin shaft 21 is provided in the pin hole, the pin shaft 21 is rotatably connected with one end of the swing arm 5, the inner jaw two 2 is connected with the swing arm 5 through the pin shaft 21, a guide groove 52 is provided on the swing arm 5, the length direction of the guide groove 52 is the same as the length direction of the swing arm 5, a limiting pin is provided on the outer jaw two 3, the limiting pin stretches into the guide groove 52, the limiting pin can move in the guide groove 52, and the pin shaft 21 and the limiting pin are symmetrical about the zero scale line center of the vernier 4.

As shown in fig. 2 to 6, in order to ensure smooth movement of the vernier 4 on the main scale 1 and the swing arm 5, a chute 11 is provided on the main scale 1, the length direction of the chute 11 is parallel to the extending direction of the scale, the chute 11 is located below the scale, a connecting pin 7 is vertically provided on the vernier 4, the connecting pin 7 penetrates through the chute 11 and the guide slot 52, one end of the connecting pin 7, which is close to the swing arm 5, is provided with a limiting piece 8 to prevent the vernier 4 from falling off, and in this embodiment, the limiting piece 8 is of an oval structure; the connecting pin 7 is in threaded connection with the vernier 4 and the limiting piece 8.

As shown in fig. 7, in order to avoid that when the inner jaw two 2 and the outer jaw two 3 are fixed, the vernier 4 moves slightly to influence the accuracy of measurement reading, one end of the limiting piece 8, which is close to the swing arm 5, is provided with a guiding piece 81, and the guiding piece 81 is located on the inner wall of the guiding groove 52 and has sliding friction force with the guiding groove 52.

As shown in fig. 8 to 9, in this embodiment, in order to facilitate moving the inner jaw two 2 and the outer jaw two 3, the inner jaw two 2 and the outer jaw two 3 may adopt the following specific structures: the inner clamping claw II 2 comprises an inner clamping claw part and a connecting part I, the connecting part I is of a C-shaped structure, the connecting part I is movably arranged at the upper end of the main scale 1, the locking piece 6 is arranged on the connecting part I, and the inner clamping claw part is provided with a pin shaft 21 which is rotatably connected with the swing arm 5; the outer clamping claw II 3 comprises an outer clamping claw part and a connecting part II, the connecting part II is of a C-shaped structure, the connecting part II is movably arranged at the lower end of the main scale 1, the locking piece 6 is arranged on the connecting part II, and the outer clamping claw part is provided with a limiting pin and is movably connected with the swing arm 5.

In this embodiment, the inner jaw 10, the outer jaw 9 and the main scale 1 are of an integrated structure.

As shown in fig. 3, the measurement principle of this embodiment is:

L=L1+R1+R2

L=L2-R1-R2

Δ=L2-L1=2R1+2R2

To sum up, l=l1+Δ/2=l2- Δ/2

Because the connection point of the inner claw second 2 and the swing arm 5 and the connection point of the outer claw second 3 and the swing arm 5 are centrally symmetrical with respect to the zero scale line of the vernier 4, the triangle ABC is congruent with the triangle ADE, and the zero scale line is positioned at the central position of the length of L2-L1, and then the corresponding size of the zero scale line on the vernier 4 is L.

The working process of the aperture center distance measuring tool is as follows:

Firstly, measuring L1, locking an inner clamping jaw II 2, then sliding an outer clamping jaw II 3 to measure L2, locking the outer clamping jaw II 3, and reading the center hole distance of the aperture according to a reading method of a vernier caliper.

From the above detailed description, it can be seen that the present utility model has the following advantages:

1. The inner clamping claw II 2 and the outer clamping claw II 3 are connected through the swing arm 5, and the connection points of the inner clamping claw II and the swing arm 5 are symmetrically arranged about the zero scale mark of the vernier, so that the corresponding value of the zero scale mark of the vernier 4 is L after L1/L2 is measured, the direct measurement of the aperture center distance is realized, the efficiency is high, and the error is small;

2. through the effect of guide 81 can avoid when interior claw two 2 and outer claw two 3 are fixed after, vernier 4 has the small removal, influences the precision of measurement reading.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides an aperture centre-to-centre spacing measuring tool, including main scale (1), its characterized in that, main scale (1) one end upper and lower both sides are provided with interior clamping jaw (10) and outer clamping jaw (9) respectively, the measuring surface of interior clamping jaw (10) and the measuring surface of outer clamping jaw (9) are coplanar, still movably be provided with interior clamping jaw two (2) and outer clamping jaw two (3) on main scale (1) relevant position, all be provided with retaining member (6) on interior clamping jaw two (2) and the outer clamping jaw two (3), interior clamping jaw two (2) and outer clamping jaw two (3) are connected through swing arm (5), swing arm (5) and interior clamping jaw two (2) and the equal swing joint of outer clamping jaw two (3), movably be provided with on swing arm (5) vernier scale (4) can also follow main scale (1) and remove, the tie point of interior clamping jaw two (2) and swing arm (5) and the tie point of outer clamping jaw two (3) and swing arm (5) about zero scale (4) the symmetry line.

2. The aperture center distance measuring tool according to claim 1, wherein the outer claw second (3) is rotatably connected to one end of the swing arm (5), and the other end of the swing arm (5) is movably connected to the inner claw second (2).

3. The aperture center distance measuring tool according to claim 1, wherein the inner claw second (2) is rotatably connected to one end of the swing arm (5), and the other end of the swing arm (5) is movably connected to the outer claw second (3).

4. A tool for measuring the aperture center distance as claimed in claim 3, characterized in that the inner clamping jaw two (2) is connected with the swing arm (5) through a pin shaft (21), a guide groove (52) is arranged on the swing arm (5), the length direction of the guide groove (52) is the same as the length direction of the swing arm (5), a limiting pin is arranged on the outer clamping jaw two (3), the limiting pin stretches into the guide groove (52), the limiting pin can move in the guide groove (52), and the pin shaft (21) and the limiting pin are centrally symmetrical about a zero scale line of the vernier scale (4).

5. The aperture center distance measuring tool according to claim 4, wherein a chute (11) is arranged on the main scale (1), the length direction of the chute (11) is parallel to the extending direction of the scale, a connecting pin (7) is vertically arranged on the vernier scale (4), the connecting pin (7) penetrates through the chute (11) and the guide groove (52), and a limiting part (8) is arranged at one end, close to the swing arm (5), of the connecting pin (7).

6. The aperture center distance measuring tool according to claim 5, wherein a guide member (81) is arranged at one end of the limiting member (8) close to the swing arm (5), and the guide member (81) is positioned on the inner wall of the guide groove (52) and has sliding friction force with the guide groove (52).

7. The tool for measuring the aperture center distance according to claim 1, wherein the locking member (6) is a bolt, the axis of the locking member (6) is perpendicular to the length direction of the main scale (1), and the bottom end of the locking member (6) can be abutted to the main scale (1).

8. The tool for measuring the center distance of the aperture according to claim 7, wherein the second inner clamping claw (2) comprises a first inner clamping claw part and a first connecting part, the first connecting part is of a C-shaped structure, the first connecting part is movably arranged at the upper end of the main scale (1), the locking piece (6) is arranged on the first connecting part, and the first inner clamping claw part is rotatably connected with the swing arm (5).

9. The tool for measuring the aperture center distance according to claim 7, wherein the second outer claw (3) comprises an outer claw portion and a second connecting portion, the second connecting portion is of a C-shaped structure, the second connecting portion is movably arranged at the lower end of the main scale (1), the locking piece (6) is arranged on the second connecting portion, and the outer claw portion is movably connected with the swing arm (5).

10. The tool for measuring the aperture center distance according to claim 1, wherein the inner clamping claw I (10), the outer clamping claw I (9) and the main scale (1) are of an integrated structure.