CN211012810U - Plane measuring tool - Google Patents

Abstract

The utility model relates to a flatness measuring tool relates to part flatness measuring tool technical field. A flatness measuring tool comprises a rail fixing frame; the through hole is arranged on the fixed rail frame and penetrates through the upper end face and the lower end face of the fixed rail frame; the marking pen is internally provided with a cavity, the lower part of the marking pen is conical, the size of the lower end of the marking pen is minimized, and the upper end surface of the marking pen is provided with a threaded hole extending to the cavity; the push rod is inserted into the threaded hole in a threaded matching mode; and the marking pigment is arranged in the cavity of the marking pen and is positioned below the push rod. The technical scheme of the application particularly uses a cuboid (long strip-shaped) rail fixing frame as a support, pertinently solves the problem of low precision measurement precision of long-distance rails, and avoids the problem of large plane or large length size which is necessary to be adopted for ensuring precision; in the laminating scope as little as possible, make the measuring basis unified, guarantee track structure's measurement accuracy.

Description

Plane measuring tool

Technical Field

The utility model relates to a part flatness measures utensil technical field, specifically, relates to a flatness measuring tool.

Background

After the parts are machined and formed, precision measurement is required. In the measurement of planar pieces, the most common measurement direction is flatness measurement, i.e. measurement of the surface roughness of a part relative to a horizontal plane.

A common flatness measuring method is a feeler gauge measuring method, i.e. a machining error range is determined by placing a plane to be measured on a reference plane and by a ruler size which can be inserted into a gap between the plane and the reference plane. However, this method is not suitable for narrow and long parts such as rails, and is not easy to implement because the length of the part is too long and the reference surface required is larger. And if the size of the reference surface is smaller than that of the track, the measurement result based on the uniform reference surface is difficult to obtain, so that the test error is larger.

Another common measurement method is to use a dial gauge in conjunction with a reference platform to perform the measurement. Specifically, a plurality of points are selected on the platform to be measured for value taking, then the numerical values among the points are obtained, and the planeness is summarized through a calculation formula. The accuracy of the result obviously still takes the relative position relationship between the reference surface and the plane to be measured as the measurement basis, and the reference surface needs to continuously move on the long track, so that the measurement basis is not uniform, and the accuracy of the measurement result is still influenced.

In addition, the two planeness can only obtain numerical values, and direct guidance or reference basis cannot be provided for correction processing of parts, so that in actual use, whether a more accurate subsequent processing process is performed needs to be determined again according to whether the result meets the requirement or not.

Disclosure of Invention

1. Problems to be solved

Can not directly provide reference and guide to correction error to current plane degree measurement method, can not conveniently assist the problem of carrying out the course of working of higher accuracy, the technical scheme of the utility model adopt the mode that directly shows the error degree on spare part, directly guide follow-up processing region, realize not can better the purpose of correcting spare part machining error with the equipment of higher accuracy.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

A flatness measuring tool comprises a rail fixing frame;

the through hole is arranged on the fixed rail frame and penetrates through the upper end face and the lower end face of the fixed rail frame;

the marking pen is internally provided with a cavity, the lower part of the marking pen is conical, the size of the lower end of the marking pen is minimized, and the upper end surface of the marking pen is provided with a threaded hole extending to the cavity;

the push rod is inserted into the threaded hole in a threaded matching mode;

and the marking pigment is arranged in the cavity of the marking pen and is positioned below the push rod.

Preferably, a slide way is arranged on the upper surface of the rail fixing frame, and the slide way extends along the extending direction of the through hole; the marking pen slides along the slide way.

Preferably, the outer part of the marking pen extends outwards to form a sliding block, and the sliding block is in sliding fit with the sliding way.

Preferably, a C-shaped clamping portion is arranged on the sliding block and clamped on the sliding way, and sliding clamping of the sliding block and the sliding way is achieved.

Preferably, the number of the slide ways is two, and the slide ways are respectively positioned at two sides of the through hole;

the number of the sliding blocks extending outwards from the outer part of the marking pen is two;

the sliding block and the slideway are respectively matched correspondingly to realize the guiding sliding of the marking pen.

Preferably, the lower part of the marking pen is of a conical structure, the cross-sectional dimension of the outlet at the lower end is gradually reduced from top to bottom, and the inner diameter of the outlet at the lowest end is not less than 3 mm.

Preferably, the marking pigment is a talc pen.

Preferably, at least three height-adjusting bolts are arranged on the lower end face of the fixed rail frame; the height-adjusting bolt is screwed into the fixed rail frame from bottom to top in a thread matching mode.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a mark stroke shape is surveyed to planar straight line and is drawn, surveys based on a plurality of straight lines and draw the result that the vestige shows, summarizes the convex-concave condition of the straight line orbit of a plurality of parallels on the plane, utilizes the plane degree condition of a plurality of straight line models that are parallel to each other, shows whole planar plane degree. The technical scheme of the application particularly uses a cuboid (long strip-shaped) rail fixing frame as a support, pertinently solves the problem of low precision measurement precision of long-distance rails, and avoids the problem of large plane or large length size which is necessary to be adopted for ensuring precision; in the laminating scope as little as possible, make the measuring basis unified, guarantee track structure's measurement accuracy.

(2) The utility model discloses a C type card portion realizes from the multidimension degree that the abundant cohesion of slider and slide combines with firmly to confirm the mobile location benchmark of marker pen on the slide, only need guarantee the machining precision of slide rail, can guarantee the precision of marking process, be favorable to reducing the processing cost.

(3) The utility model arranges a push rod on the marking pen, and utilizes the push rod to flexibly push out the talc pen in the marking pen; when the marking pen is used, the talc pen protruding out of the marking pen is cut to be flush with the lower end part of the marking pen or slightly extend out of the marking pen by the blade, and then marking is carried out; after the stone pen is used, the push rod is rotated to continuously push the stone pen downwards so that the stone pen can be stretched out again, the length of the stretched stone pen can be flexibly adjusted, the holding force is provided for the stone pen during scribing, and the talc pen is prevented from automatically retracting upwards in the scribing process (the friction force between the talc pen and the marking pen shell is small).

Drawings

FIG. 1 is a perspective view of an embodiment;

FIG. 2 is a top view of the embodiment;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a perspective view of a marker pen of an embodiment;

FIG. 5 is a top view of an embodiment of a marker pen;

fig. 6 is a cross-sectional view of the marker pen of fig. 5 taken along line B-B.

In the figure:

1. a rail fixing frame; 101. a through hole; 102. a slideway;

2. a marking pen; 201. a cavity; 202. a threaded hole; 203. a slider;

3. a push rod; 4. marking pigment; 5. a level gauge; 6. a knob post; 7. and (5) heightening the bolt.

Detailed Description

In order to make the utility model realize, the technical means, the creation characteristics, the achievement purpose and the efficacy are easy to understand and understand, and the utility model is further explained below.

Example 1

As shown in fig. 1 to 6, a flatness gauge includes:

a rail fixing frame 1;

the through hole 101 is arranged on the fixed rail frame 1, and the through hole 101 penetrates through the upper end surface and the lower end surface of the fixed rail frame 1;

the marking pen 2 is provided with two slide ways 102 on the upper surface of the rail fixing frame 1, and the slide ways 102 are all along the extending direction of the through hole 101 and are respectively positioned at two sides of the through hole 101; correspondingly, two sliding blocks 203 extend outwards from the exterior of the marking pen 2, the sliding blocks 203 are respectively in corresponding sliding fit with the sliding ways 102, and the marking pen 2 slides along the sliding ways 102.

In order to keep the position of the lower end of the marking pen constant and the marking effect stable, the embodiment adopts the following technical scheme:

the marking pen 2 is internally provided with a cavity 201, the lower part of the marking pen 2 is conical, the size of the lower end of the marking pen 2 is minimized, and the inner diameter of an outlet at the lowermost end of the marking pen 2 is not less than 3 mm. This bundle mouthful structure is favorable to tieing the talcum pen in cavity 201, and the export size is too big leads to the stone pen to deviate from cavity 201 easily, perhaps makes the piece drop, influences the effect of ruling, and talcum pen lower extreme diameter undersize leads to ruling unclear, consumes too fast, is difficult to clearly mark out the plane state of undulation, and talcum pen stretches out a lot earlier, and it is clear to rule, and the later stage is because consuming the effect of ruling unclear more outstanding, influences the mark accuracy.

In order to solve the above problems, in use, after the fixed rail frame 1 and the marking pen 2 are initialized, the fixed rail frame and the marking pen are sequentially arranged on a plurality of marking slideways along the postures which are arranged in parallel, and the concave-convex change condition of the plane to be measured in the horizontal plane and in the direction perpendicular to the extending direction of the marking line is displayed according to the definition change rule displayed by a plurality of marks drawn in parallel. Namely, the reference value displayed by the stitch in the extending direction of the marking line is weakened, so that the defects that the marking accuracy is influenced due to unclear marking caused by the consumption of the coating at the lower end of the talc pen in the later period of the marking line are weakened.

The upper end face of the marking pen 2 is provided with a threaded hole 202 extending to the cavity 201; the threaded hole is internally matched with a push rod 3, the push rod 3 is inserted into the threaded hole 202 in a threaded matching mode, the feeding of the talc pen by the push rod 3 is adjusted, the lower end of the talc pen is always kept parallel and level with the initially set position as far as possible, and the scribing uniformity is guaranteed.

A talc pen for marking a mark on the metal track is arranged below the push rod 3, and the talc pen is arranged in the cavity 201 of the marking pen 2.

The knob column 6 is arranged at one end, located outside the cavity 201, of the push rod 3, the anti-skid grains are arranged on the outer peripheral face of the knob column 6, and when the talc pen is used, the push rod 3 can be pushed to one side close to the talc pen by rotating the push rod 3 through the knob column 6, so that the requirement of scribing of the talc pen is met.

The sliding block is pushed, the marking pen draws a plurality of lines on the track, and when a certain area of the track is sunken relative to the horizontal plane, the marking trace of the marking pen is weakened or disappears; when an area is raised relative to a horizontal plane, the score lines will tend to be sharp, deep and thickened. In the subsequent processing process, the deeply scribed area is emphatically ground, so that the flatness area of the whole track is uniform, and the purpose of providing direct reference for the subsequent fine processing is realized.

Example 2

The C-shaped clamping portion is arranged on the sliding block 203 and clamped on the sliding rail 102, sliding clamping of the sliding block 203 and the sliding rail 102 is achieved, limitation of the sliding rail 102 on the sliding block 203 can be achieved in more dimensions by means of the C-shaped clamping portion, stable matching of the sliding block 203 and the sliding rail 102 is firmly guaranteed, and marking result accuracy of the marking pen is guaranteed.

In order to avoid the track fixing frame 1 that the plane levelness that awaits measuring leads to inadequately to place insecurely, influence the mark precision of marker pen, set up four bolts in the bottom in this embodiment, realize stable support, high accuracy location to track fixing frame 1 through adjusting bolt position.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, but rather that the principles of the invention are described in the above embodiments and the description, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and these changes and modifications are intended to be included within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. A flatness gauge, comprising: comprises that

A rail fixing frame (1);

the through hole (101) is arranged on the fixed rail frame (1), and the through hole (101) penetrates through the upper end surface and the lower end surface of the fixed rail frame (1);

the marking pen comprises a marking pen (2), wherein a cavity (201) is formed in the marking pen (2), the lower part of the marking pen (2) is conical, the size of the lower end of the marking pen (2) is minimized, and a threaded hole (202) extending to the cavity (201) is formed in the upper end face of the marking pen (2);

the push rod (3) is inserted into the threaded hole (202) in a thread matching mode;

and the marking pigment (4) is arranged in the cavity (201) of the marking pen (2) and is positioned below the push rod (3).

2. A flatness gauge according to claim 1, wherein:

a slide way (102) is arranged on the upper surface of the rail fixing frame (1), and the slide way (102) extends along the extending direction of the through hole (101); the marking pen (2) slides along the slideway (102).

3. A flatness gauge according to claim 2, wherein:

the outside of the marking pen (2) extends outwards to form a sliding block (203), and the sliding block (203) is in sliding fit with the sliding way (102).

4. A flatness gauge according to claim 3, wherein:

the C-shaped clamping portion is arranged on the sliding block (203) and clamped on the sliding way (102), and sliding clamping of the sliding block (203) and the sliding way (102) is achieved.

5. A flatness gauge according to claim 3, wherein:

the number of the slide ways (102) is two, and the slide ways are respectively positioned on two sides of the through hole (101);

the number of the sliding blocks (203) extending outwards from the outer part of the marking pen (2) is two;

the sliding block (203) is correspondingly matched with the sliding way (102) respectively to realize the guiding sliding of the marking pen (2).

6. A flatness gauge according to claim 1, wherein:

the inner diameter of an outlet at the lowermost end of the marking pen (2) is not less than 3 mm.

7. A flatness gauge according to any of claims 1-6, wherein:

the marking pigment (4) is a talc pen.

8. A flatness gauge according to any of claims 1-6, wherein:

at least three height-adjusting bolts (7) are arranged on the lower end face of the fixed rail frame (1); the height-adjusting bolt (7) is screwed into the fixed rail frame (1) from bottom to top in a thread matching mode.

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