Lever indicator measuring device
The utility model is related to field of measuring technique, especially a kind of lever indicator measuring device.
Dial gauge be the B.C. Ames in the U.S. in made of 1890, be usually used in Geometrical Error and thin tail sheep
Linear measure longimetry (as further subdivision round dial scale, can be made into amesdial.Amesdial is substantially equal with dial gauge, therefore this
Patent no longer repeats amesdial).Change gauge head shape and be equipped with corresponding stent, the deformation product of dial gauge can be made
Kind, such as thickness dial gauge, depth dial gauge and dial bore gage.Such as rack is replaced to can be made into lever indicator with lever,
Indication range is smaller, but sensitivity is higher.In addition, its gauge head can rotate in certain angle, the survey of different directions is adapted to
Amount, it is compact-sized.Therefore, shape and the position of the outer circle measured, aperture and groove etc. are difficult to suitable for measuring common dial gauge
In actual use, the measurement for specific workpiece generally requires and is equipped with dedicated tooling lever indicator.Such as
Publication No. CN205079687 utility model patent " lever indicator measure tooling ", using extension rod, fixing sleeve and height
It spends the components such as ruler and forms tooling, increase detection range, the flatness and height of detection of complex inner cavity more inside platform can be extended.
The for another example utility model patent " cutting edge precision consistency device for fast detecting " of Publication No. CN202470946, using unified base
Certainly position tool section, fixed axial position according to detection cutting edge height change, realize that cutting edge roundness multiple spot quickly detects.
Various toolings of the prior art have considerable restraint when carrying out the measurement of planeness, main performance be precision not
Foot：Lever indicator slides on the sliding block of tooling, and the variation of reading reflects the flatness error on surface to be measured, full-scale reading with
Difference between least count is flatness error.It must be ensured, however, that it is between the extending direction of sliding block and surface to be measured
Parallel, reading is just credible.If the extending direction of sliding block has certain angle with surface to be measured, then sliding block is located at stroke both ends
When can not ignore with the distance between surface to be measured difference, which is even more than flatness error.And lever indicator is in work
2 points of reading difference is actually the sum of flatness error and above-mentioned range difference on part, if range difference is excessive, lever percentage
The reading of table no longer reflects the flatness error of workpiece, insincere.
Utility model content
The utility model provides a kind of lever indicator measuring device, is put down to solve existing lever indicator
The problem of precision is insufficient when face degree measures.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：A kind of lever indicator measuring device, packet
Slide bar is included, the sliding block being slidably arranged on the slide bar and the lever indicator being connected on the sliding block further include：Two
Root column positioned opposite is fixed on the reference block of each column bottom, the datum level positioned at the reference block bottom, two bases
The datum level of quasi- block is located on same datum plane；The both ends of the slide bar are separately fixed on the column described in one, and sliding
Glide direction of the block on slide bar is parallel to the datum plane.
Further, the reference block is magnetic block.
Further, the top of the lever indicator has grip shank, has and the grip shank on the sliding block
The receiving hole matched, the grip shank are plugged in the receiving hole；First intersected with receiving hole is additionally provided on the sliding block
Tapped through hole, the first tapped through hole internal thread rotation set the first trip bolt, and the bar portion free end of first trip bolt is supported
It leans against in the grip shank.
Further, the receiving hole is through-hole.
Further, have on the column and be plugged in the mounting hole with the matched mounting hole of slide bar, slide bar, installed
The second tapped through hole of setting in column above hole, the second tapped through hole internal thread rotation set the second trip bolt, the second fastening
The bar portion free end of screw is resisted against on the slide bar.
Further, two second tapped through holes of setting, each second spiral shell in the column of the top of each mounting hole
Screw thread rotation sets second trip bolt respectively in line through-hole.
Further, it is provided with cushion block between the bottom surface of the mounting hole and slide bar.
Further, the cushion block is U-shaped of the opening towards reference block.
Further, there is the stage portion for positioning the slide bar at the top of the cushion block.
The precision of lever indicator measuring device greatly improved in above structure, disclosure satisfy that precision surface, large scale table
The measurement of planeness in face；The device can be directly placed on workpiece and use, and without fixture, measurement efficiency greatly improves；
And the measurement on the surfaces such as the surface to be measured of horizontal direction, the surface to be measured of inclined direction, groove surface, the scope of application can be suitable for
Extensively；Its is simple in structure, cost input is low, easy to operate, reduces the cost of enterprise.
Description of the drawings
Fig. 1 is the utility model structural front view, and wherein right side uprights are broken section；
Fig. 2 is the left view of column；
Fig. 3 is sliding block and the left view of lever indicator package assembly；
Shown in figure：1st, column, 2, reference block, 20, datum level, 3, slide bar, 4, sliding block, 40, receiving hole, the 41, first spiral shell
Line through-hole, the 42, first trip bolt, 5, lever indicator, 50, grip shank；
10th, mounting hole, the 11, second tapped through hole, the 12, second trip bolt, 13, cushion block, 130, stage portion.
For the ease of understanding the above-mentioned purpose of the utility model, feature and advantage, it is illustrated with reference to embodiment.It should
Understand, these embodiments are merely to illustrate the utility model rather than limitation the scope of the utility model.For these implementations
A variety of modifications of example will be apparent to those skilled in the art, the general principles defined herein,
It can be achieved in other embodiments without departing from the spirit or scope of the present utility model.
The front view of the utility model shown in Figure 1, on the whole for, the lever indicator measuring device packet
It includes：Two columns 1 positioned opposite are fixed on the reference block 2 of 1 bottom of each column, the benchmark positioned at 2 bottom of reference block
Face 20, the datum level 20 of two reference blocks 2 are located on same datum plane A；Slide bar 3, the both ends of slide bar 3 are separately fixed at one
On root post 1, and the extending direction of slide bar 3 is parallel to the datum plane A；The sliding block 4 being slidably arranged on slide bar 3, sliding block 4
Glide direction on slide bar 3 is parallel to the datum plane A；And it is connected to the lever indicator 5 on sliding block 4.
The basic operation process of the lever indicator measuring device is：Reference block 2 is placed on surface to be measured, along cunning
3 sliding slider 4 of bar, lever indicator 5 are slided with sliding block 4.
When surface to be measured has bumps, the pointer of lever indicator 5 will be swung therewith, record the maximum value of pointer
Max and minimum M in, the two is subtracted each other, and difference is the flatness error on surface to be measured.Operation is very simple, main suitable
Together in the situation that surface to be measured is strip, such as tool section sharpening coherence measurement.
When surface to be detected is sheet, operating process is：
The measuring device is positioned over first side on surface to be measured by S1；Basic operation process is carried out, records lever percentage
The maximum value Max 1 of 5 pointer of table and minimum M in 1；
S2 moves the measuring device along perpendicular to the direction of 3 extending direction of slide bar；Basic operation process is carried out, is recorded
The maximum value Max 2 of 5 pointer of lever indicator and minimum M in 2；
S3 continues to move the measuring device along perpendicular to the direction of 3 extending direction of slide bar；Carry out basic operation process, note
The maximum value Max 3 and minimum M in 3 of lower 5 pointer of lever indicator of record；
Sn continues along the measuring device is moved perpendicular to the direction of 3 extending direction of slide bar, and the measuring device has been moved at this time
It moves to the second side on surface to be measured, the second side and the first side are positioned opposite；Basic operation process is carried out, records lever percentage
Maximum value Max n and minimum M the in n of 5 pointer of table；
Send finds out a maximum value Max max, from Min 1, Min from Max 1, Max 2, Max 3 ... Max n
2nd, a minimum M in min is found out in Min 3 ... Min n, the two is subtracted each other, difference is that the flatness on surface to be measured is missed
In said structure, since glide direction of the sliding block 4 on slide bar 3 is parallel to datum plane A, ensure sliding block
Zero is theoretically with the distance between surface to be measured difference during positioned at stroke both ends, even if lever indicator 2 points of reading on workpiece
Number difference is actually the sum of flatness error and range difference, since range difference is zero, the reading difference of lever indicator
It being capable of true reflection planes degree error.The precision of lever indicator measuring device, energy greatly improved in the structure of the utility model
Enough meet the measurement of planeness of precision surface, large scale surface.Compared to optical measurement such as existing optical flat interferometry, laser optical methods
Method has many advantages, such as that equipment is simple, cost input is low, easy to operate.The device can be directly placed on workpiece and use, and
Without fixture, measurement efficiency greatly improves.
The device it is applied widely, be not only suitable for surface to be measured be horizontal direction situation, for inclined to be measured
Surface can be equally applicable in, it is only necessary to device be obliquely fitted in surface to be measured, do not need to increase equipment.The benchmark
Block 2 can be magnetic block, then further facilitates behaviour in use, using magnetic automatic absorbing on workpiece on the sloped surface
Make.The reference block 2 can have higher hardness, prevent from wearing through Overheating Treatment.
The present apparatus can both be directed to plane and carry out the measurement of planeness, can also be directed to groove surface and carry out the measurement of planeness.Knot
Fig. 1 and Fig. 3 is closed, the top of the lever indicator 5 has grip shank 50, has on the sliding block 4 matched with grip shank 50
Receiving hole 40, the grip shank 50 are plugged in the receiving hole 40.And it is additionally provided on the sliding block 4 and intersects with receiving hole 40
The first tapped through hole 41,41 internal thread of the first tapped through hole rotation sets the first trip bolt 42, first trip bolt 42
Bar portion free end be resisted against in the grip shank 50, so that lever indicator 5 is fixed on sliding block 4.By unscrewing first
Trip bolt 42, grip shank 50 can slide up and down in receiving hole 40, until meeting the requirements, then screw the first trip bolt 42
It is fixed.The receiving hole 40 can be through-hole, therefore the movement of grip shank 50 will not be caused to hinder.It is recessed when needing to measure
During groove face so that grip shank 50 moves down the distance of depth of groove in receiving hole 40.Since the measurement of flatness is
One relative value, therefore the displacement distance of grip shank 50 does not need to be very accurate, as long as so that the finger of lever indicator 50
Needle keeps touching plane to be measured within range.
Have with reference to Fig. 1 and Fig. 2, on the column 1 and be plugged in the installation with 3 matched mounting hole 10 of slide bar, slide bar 3
In hole 10, the second tapped through hole 11 of setting in the column 1 of 10 top of mounting hole, 11 internal thread of the second tapped through hole rotation sets second
Trip bolt 12, the bar portion free end of the second trip bolt 12 are resisted against on the slide bar 3, therefore slide bar 3 is fixed on installation
In hole 10.Two second tapped through holes 11 of setting, each second tapped through hole in the column 1 of the top of each mounting hole 10
Screw thread rotation sets second trip bolt 12 respectively in 11, it is possible thereby to which so that the clamping of slide bar 3 is more secured.
In order to ensure the extending direction of slide bar 3 is parallel to datum plane A, which needs after used a period of time
It is calibrated.For the ease of calibration, cushion block 13 is set between the bottom surface of mounting hole 10 and slide bar 3.It finds to slide when calibrated
The extending direction of bar 3 and datum plane A and it is not parallel when, appropriate grinding is carried out by the cushion block 13 to higher side so that
Slide bar 3 comes back to parastate.
The grinding degree of cushion block 13 is related to the structure of the departure degree and device of slide bar 3 in itself.So that the cunning of sliding block 4
Stroke is moved as L1, the length of the slide bar 3 between two root posts 1 is L2.The device is positioned in calibration plane, sliding block 4 is located at
The difference of 5 reading of lever indicator during stroke both ends is D, is ground degree=D*L2/L1.
Cushion block 13, towards the U-shaped of reference block 2, is fastened on column 1 preferably in opening.And the top of cushion block 13 has step
Portion 130, for positioning the slide bar 3.During grinding, only 13 top of cushion block of 130 lower section of stage portion is ground.