CN112504096A - Measuring device for measuring flatness of workpiece - Google Patents
Measuring device for measuring flatness of workpiece Download PDFInfo
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- CN112504096A CN112504096A CN202011249574.4A CN202011249574A CN112504096A CN 112504096 A CN112504096 A CN 112504096A CN 202011249574 A CN202011249574 A CN 202011249574A CN 112504096 A CN112504096 A CN 112504096A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/28—Measuring arrangements characterised by the use of mechanical techniques for measuring roughness or irregularity of surfaces
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a measuring device for measuring the flatness of a workpiece, and belongs to the technical field of flatness measurement. The measuring device comprises a bottom plate, a measuring assembly and three supporting column adjusting pieces. The measuring assembly comprises a measuring rod, a measuring piece and a side plate. Each support column regulating part comprises a slide rod and at least one support column, the slide rod is arranged on the bottom plate in a sliding mode, the sliding direction of the slide rod is parallel to the surface of the side plate, each support column comprises a general support column and a special support column, the general support columns are vertically arranged, the bottom ends of the general support columns are inserted in the slide rod in a sliding mode along the axial direction of the slide rod, the top ends of the general support columns extend towards the bottom plate in a back mode, the bottom ends of the special support columns are coaxially detachably inserted in the top ends of the general support columns, and the special support. The measuring device provided by the disclosure can be suitable for flatness measurement of different workpieces to be measured.
Description
Technical Field
The invention belongs to the technical field of flatness measurement, and particularly relates to a measuring device for measuring flatness of a workpiece.
Background
The flatness detection is required to be carried out on the die casting after the die casting is machined, so that the machining precision of a workpiece is ensured, and the installation precision of the workpiece is ensured.
In the related art, firstly, three support columns with equal height are fixed on a bottom plate to support a workpiece to be measured, so that the horizontal arrangement of the surface to be measured of the workpiece is ensured. And then, detecting the planeness of different positions of the surface to be detected on the workpiece to be detected by using a dial indicator.
However, the positions of the supporting points of different workpieces to be measured are different, and the thicknesses (the distance from the supporting points to the surface to be measured of the workpiece to be measured) are different, the supporting columns in the above method are fixedly arranged, and the length is fixed, so that the method cannot be applied to the measurement of different workpieces to be measured.
Disclosure of Invention
In view of the above drawbacks and needs of the prior art, the present invention provides a measuring device for measuring flatness of workpieces, which is to perform measurement on different workpieces to be measured, thereby solving the technical problem that the device cannot be applied to measurement of different workpieces to be measured.
In order to achieve the above object, the present invention provides a measuring apparatus for measuring flatness of a workpiece, the measuring apparatus comprising a base plate, a measuring assembly and three support post adjusting pieces;
the measuring assembly comprises a measuring rod, a measuring part and two side plates, the measuring part is used for measuring the flatness of a workpiece to be measured, the two side plates are arranged in parallel at intervals, the two side plates are respectively and vertically fixed on one plate surface of the bottom plate, two ends of the measuring rod are respectively and movably inserted into the tops of the two side plates, the sliding direction of the measuring rod is parallel to the plate surfaces of the side plates, the measuring rod is horizontally arranged, and the measuring part is inserted into the measuring rod in a sliding manner along the axial direction of the measuring rod;
the three support column adjusting parts are arranged on the bottom plate at intervals, each support column adjusting part comprises a slide bar and at least one support column, the slide bar can be arranged on the bottom plate in a sliding mode, the sliding direction of the slide bar is parallel to the surface of the side plate, each support column comprises a universal support column and a special support column, any one support column adjusting part is vertically arranged, the bottom end of the universal support column can be inserted on the slide bar in a sliding mode along the axial direction of the slide bar, the top end of the universal support column extends back to the bottom plate, the bottom end of the special support column is coaxially and detachably inserted in the top end of the universal support column, and the special support column is a rod piece with adjustable length to support different workpieces to be measured.
Optionally, the special support column includes a connection column body and an adjustment column body, a bottom end of the connection column body is coaxially detachably inserted into a top end of the general support column, a bottom end of the adjustment column body is provided with an insertion column which is coaxially arranged, a threaded hole which is coaxially arranged is formed in the connection column body, and the insertion column is in threaded fit with the threaded hole.
Optionally, the special support column further comprises a locking member for locking the connection cylinder and the insertion column.
Optionally, the locking member is a connecting bolt, the connecting bolt is coaxially inserted into the threaded hole, and the top end of the connecting bolt is in threaded fit with the insert column to connect the connecting column and the insert column.
Optionally, the locking member is a first stopping bolt, the first stopping bolt is inserted into the connecting column, the first stopping bolt is in threaded fit with the connecting column, one end of the first stopping bolt movably extends into the threaded hole, and one end of the first stopping bolt abuts against the outer wall of the inserting column.
Optionally, the top of the adjusting column body is provided with a first counter bore, the special support column further comprises a buffer column and a spring, one end of the buffer column is movably inserted into the first counter bore, the outer wall of the buffer column is provided with a coaxially arranged convex ring, the outer diameter of the convex ring is larger than the diameter of the first counter bore so as to limit the buffer column, and the spring is located at the bottom of the first counter bore so as to buffer the buffer column.
Optionally, the special support column further includes a second stopping bolt, the second stopping bolt is inserted into the adjusting column body, the second stopping bolt is in threaded fit with the adjusting column body, one end of the second stopping bolt movably extends into the first counter bore, and one end of the second stopping bolt abuts against the outer wall of the buffer column.
Optionally, the outer wall of the buffer column is provided with a second counter bore, the second counter bore is arranged along the radial direction of the buffer column, and one end of the second stop bolt is movably inserted into the second counter bore.
Optionally, the support column further includes a support base, the support base is inserted onto the slide rod in a slidable manner along the axial direction of the slide rod, the top surface of the support base is parallel to the plate surface of the bottom plate, and the bottom end of the universal support column is vertically fixed on the top surface of the support base.
Optionally, the measuring device further comprises a plurality of reinforcing ribs, and each reinforcing rib is located at the joint of the bottom plate and the side plate.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
for the measuring device for measuring the flatness of the workpiece provided by the embodiment of the invention, two side plates are respectively and vertically fixed on one plate surface of a bottom plate, two ends of a measuring rod are respectively and movably inserted at the tops of the two side plates, the sliding direction of the measuring rod is parallel to the plate surfaces of the side plates, the measuring rod is horizontally arranged, and a measuring part is inserted on the measuring rod in a sliding manner along the axial direction of the measuring rod, so that the measuring part can be adjusted at different positions in the horizontal direction, and the flatness measurement of the workpiece to be measured at different positions is further realized.
Furthermore, the slide bars are arranged on the bottom plate in a sliding mode, the sliding direction of the slide bars is parallel to the plate surfaces of the side plates, the universal support columns are arranged vertically, and the bottom ends of the universal support columns are inserted into the slide bars in a sliding mode along the axial direction of the slide bars, so that the positions of the three support columns can be adjusted through the three universal support columns, and further different support points on different workpieces to be tested are supported. And because the coaxial detachably cartridge in bottom of special support column is in the top of general support column, special support column is length-adjustable's member to can adjust the whole length of three support column through the length of adjusting special support column, and then realize supporting point to different thickness on the work piece that awaits measuring supporting, with the face homoenergetic level of guaranteeing the work piece that awaits measuring arranges, thereby finally can detect the plane degree that awaits measuring different positions department of face on the work piece that awaits measuring.
That is to say, this measuring device that this disclosure provided not only can realize the support to the different position strong points on the work piece that awaits measuring of difference, can also realize supporting the strong point of different thickness to guarantee that the face level that awaits measuring of work piece arranges, thereby be suitable for the flatness measurement of the work piece that awaits measuring of difference.
Drawings
Fig. 1 is a schematic structural diagram of a measuring apparatus for measuring flatness of a workpiece according to the present embodiment;
fig. 2 is an exploded view of a special support column provided in the present embodiment;
fig. 3 is a sectional view of the special support column provided in the present embodiment.
The symbols in the drawings represent the following meanings:
1. a base plate; 11. reinforcing ribs; 12. a third guide rail; 2. a measurement assembly; 21. a measuring rod; 211. a second guide rail; 22. a measuring member; 23. a side plate; 231. a first guide rail; 3. a support post adjustment member; 31. a slide bar; 311. a fourth guide rail; 32. a support pillar; 321. a general support column; 322. a special support column; 3220. a locking member; 3221. connecting the columns; 3222. an adjustment cylinder; 3223. inserting a column; 3224. a threaded hole; 3225. a connecting bolt; 3226. a first stopper bolt; 3227. a first counterbore; 3228. a buffer column; 3229. a spring; 3230. a convex ring; 3231. a second stopper bolt; 3232. a second counterbore; 323. and a support seat body.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Fig. 1 is a schematic structural diagram of a measuring apparatus for measuring the flatness of a workpiece according to this embodiment, and as shown in fig. 1, the measuring apparatus includes a base plate 1, a measuring assembly 2, and three supporting column adjusting members 3.
The measuring assembly 2 comprises a measuring rod 21, a measuring piece 22 used for measuring the flatness of a workpiece to be measured and two side plates 23 arranged in parallel at intervals, the two side plates 23 are respectively and vertically fixed on one plate surface of the bottom plate 1, two ends of the measuring rod 21 are respectively movably inserted at the tops of the two side plates 23, the sliding direction of the measuring rod 21 is parallel to the plate surfaces of the side plates 23, the measuring rod 21 is horizontally arranged, and the measuring piece 22 is inserted on the measuring rod 21 in a sliding manner along the axial direction of the measuring rod 21.
Three support post adjusters 3 are arranged on the base plate 1 at intervals. Each support column adjusting part 3 comprises a sliding rod 31 and at least one support column 32, the sliding rod 31 is slidably arranged on the bottom plate 1, the sliding direction of the sliding rod 31 is parallel to the plate surface of the side plate 23, each support column 32 comprises a general support column 321 and a special support column 322, for any support column adjusting part 3, the general support column 321 is vertically arranged, the bottom end of the general support column 321 is slidably inserted on the sliding rod 31 along the axial direction of the sliding rod 31, the top end of the general support column 321 extends back to the bottom plate 1, the bottom end of the special support column 322 is coaxially and detachably inserted in the top end of the general support column 321, and the special support column 322 is a rod piece with adjustable length so as to support different workpieces.
For the measuring device for measuring the flatness of the workpiece provided by the embodiment of the invention, two side plates 23 are respectively and vertically fixed on one plate surface of the bottom plate 1, two ends of a measuring rod 21 are respectively and movably inserted into the tops of the two side plates 23, the sliding direction of the measuring rod 21 is parallel to the plate surfaces of the side plates 23, the measuring rod 21 is horizontally arranged, and a measuring part 22 is inserted into the measuring rod 21 in a sliding manner along the axial direction of the measuring rod 21, so that the adjustment of different positions of the measuring part 22 in the horizontal direction can be realized, and the flatness measurement of different positions of the workpiece to be measured can be further realized.
Further, the slide rod 31 is slidably arranged on the bottom plate 1, the sliding direction of the slide rod 31 is parallel to the plate surface of the side plate 23, the universal support columns 321 are vertically arranged, and the bottom ends of the universal support columns 321 are axially and slidably inserted into the slide rod 31 along the slide rod 31, so that the positions of the three support columns 32 can be adjusted through the three universal support columns 321, and further different support points on different workpieces to be tested can be supported. And because the coaxial detachably cartridge in bottom of special support column 322 is in the top of general support column 321, special support column 322 is length-adjustable's member to can adjust three support column 32 overall length through the length of adjusting special support column 322, and then realize supporting different thickness's strong point on the different work pieces that await measuring and support, with the face homoenergetic horizontal arrangement that guarantees the work piece that awaits measuring, thereby finally can detect the plane degree that awaits measuring different positions department on the different work pieces that await measuring.
That is to say, this measuring device that this disclosure provided not only can realize the support to the different position strong points on the work piece that awaits measuring of difference, can also realize supporting the strong point of different thickness to guarantee that the face level that awaits measuring of work piece arranges, thereby be suitable for the flatness measurement of the work piece that awaits measuring of difference.
In addition, when flatness measurement needs to be performed on workpieces to be measured in the same batch (the supporting points and the supporting thicknesses are the same), the positions of the supporting columns 32 are kept unchanged, and therefore the measurement efficiency is improved. Moreover, because the length of the special supporting column 322 is adjustable, the processing error of the sliding rod 31 or the universal supporting column 321 can be eliminated, so that the spatial position of the top of each supporting column 32 reaches a preset value, and the horizontal arrangement of the workpiece to be measured is realized through the common support of the three supporting columns 32.
It should be noted that, in the present embodiment, when two supporting points of the workpiece to be measured are on a straight line parallel to the slide rods 31, in order to avoid interference between two adjacent slide rods 31, two supporting columns 32 may be provided on the slide rods 31 in one supporting column adjusting member 3 to support the two supporting points.
The measuring member 22 may be, for example, a dial gauge or a depth gauge.
In this embodiment, the top of each side plate 23 has a first guide rail 231 extending along the length direction of the side plate 23, and both ends of each measuring rod 21 have first sliding blocks which are slidably inserted into the corresponding first guide rails 231, so as to realize the sliding of the measuring rod 21. Similarly, each measuring rod 21 is provided with a second guide rail 211 extending along the axial direction of the measuring rod 21, a second sliding block is arranged in the second guide rail 211, and the measuring part 22 is positioned on the second sliding block, so that the measuring part 22 can slide. The bottom plate 1 is provided with two third guide rails 12 arranged in parallel at intervals, the third guide rails 12 are parallel to the first guide rail 231, the two ends of the sliding rod 31 are respectively provided with a third sliding block, and the third sliding blocks are slidably inserted into the corresponding third guide rails 12, so that the sliding of the sliding rod 31 is realized.
Optionally, the supporting column 32 further includes a supporting seat 323, the supporting seat 323 is inserted onto the sliding rod 31 in a slidable manner along the axial direction of the sliding rod 31, the top surface of the supporting seat 323 is parallel to the plate surface of the base plate 1, and the bottom end of the universal supporting column 321 is vertically fixed on the top surface of the supporting seat 323.
In the above embodiment, the support base 323 serves to connect the slide bar 31 and the universal support column 321 in a transition manner, so as to facilitate installation of the universal support column 321.
Illustratively, the sliding rod 31 has a fourth guide rail 311 extending axially along the sliding rod 31, and the support seat 323 is slidably inserted into the fourth guide rail 311, so as to facilitate sliding of the universal support column 321.
In this embodiment, the measuring device further comprises a plurality of reinforcing ribs 11, each reinforcing rib 11 being located at the junction of the bottom plate 1 and the side plate 23.
In the above embodiment, the reinforcing ribs 11 serve to connect the bottom plate 1 and the side plate 23, thereby enhancing the connection strength therebetween.
Fig. 2 is an exploded view of the special supporting column provided in this embodiment, fig. 3 is a cross-sectional view of the special supporting column provided in this embodiment, and as shown in fig. 2 and fig. 3, the special supporting column 322 includes a connecting cylinder 3221 and an adjusting cylinder 3222, a bottom end of the connecting cylinder 3221 is coaxially and detachably inserted into a top end of the general supporting column 321, a bottom end of the adjusting cylinder 3222 has an inserting cylinder 3223 coaxially arranged, the connecting cylinder 3221 has a threaded hole 3224 coaxially arranged, and the inserting cylinder 3223 and the threaded hole 3224 are in threaded fit.
In the above embodiment, the depth of the inserting rod 3223 inserted into the connecting column 3221 can adjust the overall length of the special supporting column 322, which is convenient for adjusting the overall length of the supporting column 32, thereby realizing supporting of supporting points with different thicknesses.
It should be noted that the lengths of the general support columns 321 in the support columns 32 are the same, so that the length of the support columns 32 can be adjusted only by adjusting the lengths of the special support columns 322.
Exemplarily, the outer wall of the lower end of the connecting cylinder 3221 has an external thread, the upper end of the connecting cylinder 3221 has an external flange, the top of the general supporting column 321 has a threaded hole, the connection between the special supporting column 322 and the general supporting column 321 can be realized by the matching of the two, and the external flange abuts against the general supporting column 321, so that the insertion depth of each connecting cylinder 3221 in the general supporting column 321 can be ensured to be consistent, and the influence on the overall length of the supporting column 32 is avoided.
It should be noted that, in other embodiments of the present disclosure, the depth of the inserting rod 3223 inserted into the connecting column 3221 may be controlled by a rack and pinion control manner, which is not limited in the present disclosure.
In this embodiment, the special supporting column 322 further includes a locking member 3220, and the locking member 3220 is used to lock the connecting column 3221 and the inserting column 3223.
In the above embodiments, the locking member 3220 can prevent rotation between the connecting cylinder 3221 and the inserting cylinder 3223, and avoid the length of the supporting column 32 from changing under vibration, so that the workpiece to be measured is inclined during measurement to affect the accuracy of flatness measurement.
In one implementation of the present disclosure, the locking member 3220 is a connecting bolt 3225, the connecting bolt 3225 is coaxially inserted into the threaded hole 3224, and a top end of the connecting bolt 3225 is threadedly engaged with the insertion pillar 3223 to connect the connecting pillar 3221 and the insertion pillar 3223.
In the above-described embodiment, the connection between the connection cylinder 3221 and the insertion rod 3223 in the vertical direction may be achieved by the connection bolt 3225, so as to avoid the rotation between the connection cylinder 3221 and the insertion rod 3223.
Illustratively, the diameter of the screw of the connection bolt 3225 is smaller than the diameter of the threaded hole 3224, and the diameter of the nut of the connection bolt 3225 is larger than the diameter of the threaded hole 3224.
In another implementation manner of the present disclosure, the locking member 3220 is a first stopping bolt 3226, the first stopping bolt 3226 is inserted into the connecting column 3221, the first stopping bolt 3226 is in threaded fit with the connecting column 3221, one end of the first stopping bolt 3226 movably extends into the threaded hole 3224, and one end of the first stopping bolt 3226 abuts against an outer wall of the inserting column 3223.
In the above-described embodiment, the insertion rod 3223 can be clamped between the first stopping bolt 3226 and the connecting rod 3221 by the first stopping bolt 3226, so that rotation between the connecting rod 3221 and the insertion rod 3223 can likewise be prevented.
Illustratively, when the length of the special supporting column 322 is adjusted, the inserting column 3223 at the bottom of the adjusting column 3222 is inserted into the threaded hole 3224 of the connecting column 3221, and the overall length of the supporting column 32 is ensured to reach a preset value (determined according to the thickness of the supporting point on the workpiece to be measured). Finally, the connection column 3221 and the insertion column 3223 are firmly connected by the connection bolt 3225 and the first stopping bolt 3226.
With continued reference to fig. 2 and 3, the top of the adjusting cylinder 3222 is provided with a first counterbore 3227, the special supporting column 322 further includes a buffering column 3228 and a spring 3229, one end of the buffering column 3228 is movably inserted into the first counterbore 3227, an outer wall of the buffering column 3228 is provided with a coaxially arranged convex ring 3230, an outer diameter of the convex ring 3230 is larger than a diameter of the first counterbore 3227 to limit the buffering column 3228, and the spring 3229 is located at the bottom of the first counterbore 3227 to buffer the buffering column 3228.
In the above embodiments, the buffering columns 3228 have a buffering effect on the workpiece to be measured, so as to prevent the workpiece to be measured or the supporting columns 32 from being damaged when the workpiece to be measured is placed on the supporting columns 32.
Illustratively, when a workpiece to be measured is placed on the supporting column 32, the workpiece to be measured presses the spring 3229 through the buffering column 3228, so that the spring 3229 is compressed, and the workpiece to be measured and the buffering column 3228 move downwards slowly until the convex ring 3230 contacts the adjusting cylinder 3222, at which time the workpiece to be measured and the buffering column 3228 stop moving downwards.
Optionally, the special supporting column 322 further includes a second stopping bolt 3231, the second stopping bolt 3231 is inserted into the adjusting cylinder 3222, the second stopping bolt 3231 is in threaded fit with the adjusting cylinder 3222, one end of the second stopping bolt 3231 movably extends into the first counterbore 3227, and one end of the second stopping bolt 3231 abuts against an outer wall of the buffering cylinder 3228.
In the above embodiment, the second stopping bolt 3231 can clamp the buffering column 3228 between the second stopping bolt 3231 and the adjusting cylinder 3222, so as to limit the buffering column 3228, and prevent the buffering column 3228 from being flicked off due to too large elastic force of the spring 3229 on the buffering column 3228 when the workpiece to be measured is removed.
In this embodiment, the outer wall of the buffering column 3228 has a second counter bore 3232, the second counter bore 3232 is disposed along the radial direction of the buffering column 3228, and one end of the second stopper bolt 3231 is movably inserted into the second counter bore 3232.
In the above embodiment, the second stopping bolt 3231 is inserted into the second counterbore 3232 to limit the position of the buffering column 3228.
The following briefly describes the use of the measuring device provided by the invention:
before measurement: the three common support columns 321 are adjusted to target positions by the third guide rail 12 and the fourth guide rail 311. The length of each dedicated support post 322 is then adjusted. Finally, the connecting columns 3221 of the special supporting columns 322 are inserted into the corresponding general supporting columns 321.
During measurement: the supporting points of the workpiece to be measured are placed on the corresponding supporting columns 32, and finally the position of the measuring part 22 is adjusted through the first guide rail 231 and the second guide rail 211, so that the flatness measurement of the workpiece to be measured is finally realized.
The measuring device provided by the invention has the following advantages:
(1) the universal support column 321 of the measuring device is quickly positioned by utilizing the advantages of smooth movement, wear resistance and the like of each guide rail, so that the problem that the positions of the support points of different workpieces to be measured are different is solved.
(2) By means of the threaded fit between the inserting column 3223 and the connecting column 3221 and the locking action of the locking member 3220, after the length of the special supporting column 322 is adjusted for the first time, the length of the special supporting column 322 does not need to be adjusted again in the measurement process of workpieces to be measured in the same batch, and the adjustment time is shortened.
(3) The buffer column 3228 can buffer the placement of the workpiece to be measured.
(4) The device is simple to operate, can quickly convert and measure the flatness of different workpieces to be measured at supporting points with different thicknesses by adjusting the length of the special supporting column 322, and has the advantage of measuring stability.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A measuring device for measuring the flatness of a workpiece, characterized in that the measuring device comprises a base plate (1), a measuring assembly (2) and three support column adjustments (3);
the measuring assembly (2) comprises a measuring rod (21), a measuring part (22) for measuring the flatness of a workpiece to be measured and two side plates (23) which are arranged in parallel at intervals, the two side plates (23) are respectively and vertically fixed on one plate surface of the bottom plate (1), two ends of the measuring rod (21) are respectively and movably inserted at the tops of the two side plates (23), the sliding direction of the measuring rod (21) is parallel to the plate surfaces of the side plates (23), the measuring rod (21) is horizontally arranged, and the measuring part (22) is inserted on the measuring rod (21) in a sliding manner along the axial direction of the measuring rod (21);
the three support column adjusting parts (3) are arranged on the bottom plate (1) at intervals, each support column adjusting part (3) comprises a sliding rod (31) and at least one support column (32), the sliding rod (31) is arranged on the bottom plate (1) in a sliding mode, the sliding direction of the sliding rod (31) is parallel to the plate surface of the side plate (23), each support column (32) comprises a general support column (321) and a special support column (322), for any support column adjusting part (3), the general support column (321) is vertically arranged, the bottom end of the general support column (321) is inserted on the sliding rod (31) in a sliding mode along the axial direction of the sliding rod (31), the top end of the general support column (321) extends back to the bottom plate (1), and the bottom end of the special support column (322) is coaxially and detachably inserted in the top end of the general support column (321), the special supporting column (322) is a rod piece with adjustable length so as to support different workpieces to be tested.
2. The measuring device for measuring the flatness of the workpiece according to claim 1, wherein the special supporting column (322) comprises a connecting column (3221) and an adjusting column (3222), a bottom end of the connecting column (3221) is coaxially and detachably inserted into a top end of the general supporting column (321), a bottom end of the adjusting column (3222) is provided with an inserting column (3223) which is coaxially arranged, a threaded hole (3224) which is coaxially arranged is formed in the connecting column (3221), and the inserting column (3223) and the threaded hole (3224) are in threaded fit.
3. A measuring device for measuring the flatness of a workpiece according to claim 2, wherein the special supporting column (322) further comprises a locking member (3220), and the locking member (3220) is used for locking the connecting column (3221) and the inserting column (3223).
4. The measuring device for measuring the flatness of the workpiece according to claim 3, wherein the locking member (3220) is a connecting bolt (3225), the connecting bolt (3225) is coaxially inserted into the threaded hole (3224), and the top end of the connecting bolt (3225) is in threaded fit with the inserting column (3223) to connect the connecting column (3221) and the inserting column (3223).
5. The measuring device for measuring the flatness of the workpiece according to claim 3, wherein the locking member (3220) is a first stopping bolt (3226), the first stopping bolt (3226) is inserted into the connecting column (3221), the first stopping bolt (3226) is in threaded fit with the connecting column (3221), one end of the first stopping bolt (3226) movably extends into the threaded hole (3224), and one end of the first stopping bolt (3226) abuts against an outer wall of the inserting column (3223).
6. The measuring device for measuring the flatness of the workpiece according to claim 2, wherein a first counter bore (3227) is formed at the top of the adjusting cylinder (3222), the special supporting column (322) further comprises a buffer column (3228) and a spring (3229), one end of the buffer column (3228) is movably inserted into the first counter bore (3227), an outer wall of the buffer column (3228) is provided with a coaxially arranged convex ring (3230), the outer diameter of the convex ring (3230) is larger than the diameter of the first counter bore (3227) so as to limit the buffer column (3228), and the spring (3229) is located at the bottom of the first counter bore (3227) so as to buffer the buffer column (3228).
7. The measuring device for measuring the flatness of the workpiece according to claim 6, wherein the special supporting column (322) further includes a second stopping bolt (3231), the second stopping bolt (3231) is inserted into the adjusting column (3222), the second stopping bolt (3231) is in threaded fit with the adjusting column (3222), one end of the second stopping bolt (3231) movably extends into the first counterbore (3227), and one end of the second stopping bolt (3231) abuts against the outer wall of the buffering column (3228).
8. A measuring apparatus for measuring flatness of a workpiece as claimed in claim 7, wherein an outer wall of said buffer post (3228) has a second counter bore (3232), said second counter bore (3232) is arranged along a radial direction of said buffer post (3228), and one end of said second stopper bolt (3231) is movably inserted into said second counter bore (3232).
9. A measuring device for measuring the flatness of a workpiece according to any one of claims 1 to 8, wherein the supporting column (32) further comprises a supporting seat body (323), the supporting seat body (323) is axially slidably inserted onto the sliding rod (31) along the sliding rod (31), the top surface of the supporting seat body (323) is parallel to the plate surface of the base plate (1), and the bottom end of the universal supporting column (321) is vertically fixed on the top surface of the supporting seat body (323).
10. A measuring device for measuring the flatness of a workpiece according to any one of claims 1-8, characterised in that the measuring device further comprises a plurality of reinforcing bars (11), each reinforcing bar (11) being located at the junction of the base plate (1) and the side plate (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011249574.4A CN112504096B (en) | 2020-11-10 | 2020-11-10 | Measuring device for measuring flatness of workpiece |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011249574.4A CN112504096B (en) | 2020-11-10 | 2020-11-10 | Measuring device for measuring flatness of workpiece |
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| CN112504096A true CN112504096A (en) | 2021-03-16 |
| CN112504096B CN112504096B (en) | 2022-07-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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|---|---|
| CN112504096B (en) | 2022-07-01 |
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