CN209783507U

CN209783507U - Sheet flatness measuring device

Info

Publication number: CN209783507U
Application number: CN201920780697.7U
Authority: CN
Inventors: 黄勇
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-28
Filing date: 2019-05-28
Publication date: 2019-12-13
Anticipated expiration: 2029-05-28

Abstract

The utility model relates to a sheet flatness measuring device, which comprises a cantilever, a lifting sliding table and a displacement measuring unit; the lifting sliding table is positioned on the cantilever and drives the displacement measuring unit to lift to complete the measuring action; wherein: the displacement measuring unit is a dial indicator for reverse measuring action, and the dial indicator comprises an indicator body, a measuring rod penetrating through the indicator body in the radial direction and a built-in return spring; the reset spring is of a reverse structure and always keeps the measuring rod in the trend of the highest point; during measurement, the stop cap at the upper end of the measuring rod is pressed, the measuring head at the lower end of the measuring rod presses the thin plate to be attached to the reference plane, and the dial reading is the flatness value. The utility model skillfully adopts the dial indicator as the displacement measuring unit, has high precision and convenient reading; the cantilever can be conveniently moved or extended to the position right above the position to be measured, and the earring shaft on the back can be positioned on the lifting sliding table and can swing left and right to meet the observation angle of a tester.

Description

sheet flatness measuring device

The technical field is as follows:

The utility model belongs to the measuring equipment field, in particular to sheet metal flatness measuring device especially is fit for sheet metal's measurement.

Background art:

Patent application No. 201520008659.1 discloses a sheet flatness measuring instrument, which comprises a base, a cantilever, a screw rod lifting sliding table and a vernier caliper; one end of the cantilever is mounted on the base, and the other end of the cantilever is positioned with the screw rod lifting sliding table which comprises a fixed block and a lifting block which are embedded together in a sliding manner; the vernier caliper comprises a main scale, a vernier, a depth scale and a return spring; the main ruler is fixed on the lifting block, the return spring is arranged between the vernier and the main ruler, and the vernier automatically returns to zero by virtue of the return spring; the vernier extends outwards to form an operating handle, and the depth gauge fixed with the vernier extends out of the end part of the main scale and can directly abut against the surface of a measured object. The utility model discloses a think about uniquely, it is big nevertheless to utilize the slide caliper repacking degree of difficulty, and handle and depth gauge vertical structure, and the handle down makes power can produce the trend of twisting reverse during the measurement, and the resistance leads to the unstable defect of cantilever location greatly partially, influences and measures experience.

how to provide the measuring tool who makes the power direct when measuring, but and multi-angle observation, it is the utility model discloses the object of research.

the invention content is as follows:

The utility model aims at designing a install percentage table of reverse measurement action on the cantilever, measure the sheet metal flatness measuring device of limit wave or well unrestrained deflection with the help of pushing down the percentage table measuring stick.

the utility model discloses technical scheme realizes like this: a sheet flatness measuring device comprises a cantilever, a lifting sliding table and a displacement measuring unit; the lifting sliding table is positioned on the cantilever and drives the displacement measuring unit to lift to complete the measuring action; the method is characterized in that: the displacement measuring unit is a dial indicator for reverse measuring action, and the dial indicator comprises an indicator body, a measuring rod penetrating through the indicator body in the radial direction and a built-in return spring; the reset spring is of a reverse structure and always keeps the measuring rod in the trend of the highest point; during measurement, the stop cap at the upper end of the measuring rod is pressed, the measuring head at the lower end of the measuring rod presses the thin plate to be attached to the reference plane, and the dial reading is the flatness value.

The dial indicator is positioned on the lifting sliding table through a rotating shaft parallel to the measuring rod by means of an earring on the back, and can swing left and right around the rotating shaft.

The cantilever is of a single-end suspension structure, and the other end of the cantilever is rotationally positioned on the movable base or a fixed upright post of the measuring table; the base is a permanent magnetic chuck, a vacuum chuck, a screw rod clamp or a balancing weight; the lifting sliding table is locked on the end surface of the suspension end of the cantilever.

The cantilever suspended end provided with the movable base is also provided with an anti-tilting rod which is suspended during measurement.

The cantilever is a two-end supporting structure, one end of the cantilever is a single fulcrum, and the other end of the cantilever is a double fulcrum, so that a triangular stable support is formed; a horizontal pulley is arranged on the cantilever, a lifting sliding table is locked on the pulley, and the pulley drives the dial indicator to move to a measuring position.

The horizontal tackle is provided with a braking device, the braking device comprises a jackscrew and a handle fixed at the top end of the jackscrew, and the horizontal tackle is reliably positioned above the measuring position by means of the fact that the jackscrew is abutted against the cantilever; the cantilever is also provided with a graduated scale within the moving range of the horizontal pulley, and an alignment mark line or a corresponding alignment edge is correspondingly engraved on the horizontal pulley.

The lifting sliding table is of a screw rod driving structure and comprises a fixed block, a sliding block, a screw rod and a screw nut; the sliding block is embedded on the fixed block in a sliding manner, the screw rod is rotationally positioned on the fixed block and matched with a nut fixed on the sliding block, and the sliding block is driven to move up and down by the screw rod; the end part of the screw rod is upward, and a knob is locked at the end part.

The cantilever and the base are both made of aluminum alloy or metal section bars, a power supply, a sound circuit and a lighting lamp are arranged in or externally arranged in a cavity of one of the cantilever and the base, a virtual switch is arranged in a connecting loop of the sound circuit and the power supply, the virtual switch takes the base as one pole, a measuring head of the measuring rod is a second pole, and the measuring head is contacted with a measured metal sheet during measurement to form virtual switch conduction; the illuminating lamp is connected with the power supply through the entity switch.

The utility model skillfully adopts the dial indicator as the displacement measuring unit, has high precision and convenient reading, and the reverse measuring action after modification is very suitable for the measuring operation of the flatness; the earring shaft on the back is positioned on the lifting sliding table, so that the left and right swinging can meet the observation angle of a tester; the cantilever can be conveniently moved or extended to the position right above the position to be measured, and the stroke of the dial indicator measuring rod pressed down during measurement is the wave value and does not need to be converted.

Description of the drawings:

The present invention will be further explained with reference to the following specific drawings:

FIG. 1 is a schematic view of a portable traveling type thin plate flatness measuring device

FIG. 2 is an exploded view of a portable traveling type thin plate flatness measuring device

FIG. 3 is an exploded view of a spring reverse dial indicator

FIG. 4 is a schematic view of a portable suspended thin plate flatness measuring device

FIG. 5 is a partial schematic view of a portable suspended thin plate flatness measuring device

FIG. 6 is a schematic view of a device for measuring flatness of a thin plate with a suspended suction cup

FIG. 7 is a schematic diagram of the acousto-optic circuit

Wherein

1-cantilever 11-base 12-anti-roll bar 13-single pivot

14-driving handle 2-lifting sliding table 21-fixed block 22-sliding block

23-screw 231-knob 24-nut 3-dial indicator

31-watch body 311-bezel 32-measuring rod 321-displacement detecting member

322-blocking cap 323-measuring head 33-reset spring 34-earring

4-rotating shaft 5-horizontal pulley 51-jackscrew 52-handle

53-graduated scale 6-power 7-sound circuit 8-lighting lamp

9-virtual switch 91-switch

The specific implementation mode is as follows:

Referring to fig. 1, 2 and 3, the sheet flatness measuring device comprises a cantilever 1, a lifting sliding table 2 and a displacement measuring unit, wherein the displacement measuring unit is a dial indicator 3 for reverse measurement action, namely a dial indicator with a return spring reversely arranged. Specifically, the dial indicator 3 includes a meter body 31, a measuring rod 32 penetrating the meter body in the radial direction, and a built-in return spring 33; the return spring 33 is of a reverse structure and always keeps the measuring rod 32 at the highest point; depending on the internal space of the dial indicator, there are roughly three schemes:

first, as shown in fig. 3, the return spring 33 is an upper tension spring, one end of which is hung on the displacement detector 321 of the measuring rod, or on the rod body of the measuring rod in the watch, or on the top dead center stop of the measuring rod, and the other end of which is hung on the upper inner edge of the bezel 311.

And secondly, the return spring 33 is a compression spring and is directly sleeved on the measuring rod 32 in the meter, two ends of the return spring are correspondingly abutted against the inner edge below the bezel 311 and the displacement detecting part 321 above the middle of the measuring rod, and the return spring is still in the meter body 31.

Thirdly, the reset spring is externally arranged and is sleeved on the measuring rod section outside the meter body 31, namely, two ends of the reset spring are correspondingly abutted between the meter body 31 and the stop cap 322 at the upper end part of the measuring rod;

The return spring 33 is an upper tension spring or a lower compression spring (a reverse structure), and always keeps the measuring rod 32 at the highest point; during measurement, the position of the measuring head 323 is moved to the position above the maximum visual wave height, the knob 231 at the end part of the screw rod on the lifting sliding table is adjusted, the measuring head 323 of the measuring unit just contacts the wave vertex of the thin plate, so that the stop cap 322 at the upper end part of the measuring rod is pressed, the measuring head 323 at the lower end part of the measuring rod 32 presses the thin plate to be attached to a reference plane, namely the table top of the measuring table, and the reading of the dial plate is the flatness value.

The dial indicator 3 is positioned on the lifting sliding table 2 through a rotating shaft 4 parallel to the measuring rod 32 by means of an ear ring 34 on the back, and can swing left and right around the rotating shaft 4, so that the angle is convenient to observe.

With reference to fig. 5, the lifting slide table 2 is a screw rod driving structure, and includes a fixed block 21, a sliding block 22, a screw rod 23, and a nut 24; the sliding block 22 is embedded on the fixed block 21 in a sliding manner, the screw rod 23 is rotationally positioned on the fixed block 21 and matched with a nut 24 fixed on the sliding block, and the sliding block 22 is driven to move up and down by the screw rod 23; the end of the screw 23 faces upward and is locked with a knob 231. And the shaft of the dial indicator 3 is positioned on the sliding block 22, and the dial indicator 3 can be driven to lift through the adjusting knob 231 so as to finish the measuring action.

Cantilever 1 is used for bearing lift slip table 2 and percentage table 3, removes horizontal block and makes the measuring unit to need measuring position, and it has following three kinds of concrete structures:

Firstly, fixed, namely fix on a certain position of measuring table, through rotatory location on the fixed stand of measuring table, the cantilever can be swung to the measuring position around fixed stand, realizes the needs of measuring.

Secondly, as shown in fig. 1 and fig. 2, the portable bicycle type, that is, the cantilever 1 is a two-end supporting structure, wherein one end is a single fulcrum 13, and the other end is a double fulcrum, so as to form a triangular stable support; the design of the single pivot 13 is convenient and convenient, and the pressing area of the pivot and the influence range on the surface of the thin plate can be reduced; the double-pivot, as shown in the figure, adopts a cross bar type base 11 with two support legs arranged below, so as to keep the characteristic of portability, and does not need to adopt a base with a structure such as a single-end suspended structure, a sucker or a counterweight, and the like, so that the position of the device can be freely moved when in use, and in addition, the cost is lower.

In the structure, a horizontal pulley 5 is arranged on the cantilever 1, the lifting sliding table 2 is locked on the horizontal pulley 5, the horizontal pulley 5 drives the dial indicator 3 to move to a measuring position along the cantilever, and the measuring flexibility is stronger. In this example, the horizontal pulley 5 adopts a surrounding structure and is directly sleeved on the cantilever 1; or a linear guide rail is directly locked on the cantilever 1, and the guide rail slide block is used as the horizontal pulley 5, so that the device can cope with frequent measurement environments.

Furthermore, the horizontal pulley 5 is provided with a braking device which comprises a top wire 51 and a handle 52 fixed at the top end of the top wire, and the horizontal pulley 5 is reliably positioned above the measuring position by means of the interference of the top wire 51 on the cantilever 1 so as to facilitate other operations; the cantilever 1 is also provided with a graduated scale 53 within the moving range of the horizontal pulley 5, and an alignment mark line or a corresponding alignment edge is correspondingly engraved on the horizontal pulley 5. As shown in the figure, in this example, the straight edge of the horizontal carriage 5 is directly used as the alignment edge to cover the alignment scale 53 to convert the displacement amount, so that the distance between the two measurement points, i.e., the wave pitch, can be easily calculated.

Thirdly, as shown in fig. 4 and 5, the portable suspension type, that is, the cantilever 1 is a single-end suspension structure, the other end is rotatably positioned on the movable base 11, the base 11 is a permanent magnetic chuck, a vacuum chuck, a screw rod clamp or a counterweight block, so that the cantilever 1 can stably stand on a reference plane or a thin plate, wherein the permanent magnetic chuck has an opening and closing function and is only suitable for the reference plane made of ferromagnetic materials; in the structure, the lifting sliding table 2 is locked on the end face of the suspension end of the cantilever 1 and matched with the dial indicator 3 which can rotate left and right, so that the observation angle can be enlarged, and the lifting sliding table can also swing in suspension to a farther measurement position.

In the structure, in order to prevent the suspension end of the cantilever 1 from toppling over when moving, an anti-toppling rod 12 is also arranged at the suspension end of the cantilever 1, and the anti-toppling rod 12 is suspended when measuring, so that the measuring action of the dial indicator is not influenced, and the prevention and protection effects can be realized.

Referring to fig. 6, the figure is an example of a cantilever for positioning a suction cup, a vacuum suction cup is arranged in a base 11, namely, the vacuum suction cup has an opening and closing function, and the suction cup is controlled to generate suction force or force unloading by means of an exposed driving handle 14; the sheet is sucked or released by operating the opening and closing function in the same way as the abnormal bending of the permanent magnetic sucker. And the permanent magnetic chuck and the vacuum chuck with opening and closing functions are conventional parts.

referring to fig. 7, the cantilever 1 and the base 11 are both made of aluminum alloy or metal section, a sound and light circuit is mounted in or externally arranged in a cavity of one of the cantilever and the base, the sound and light circuit includes a power supply 6, a sound circuit 7 and a lighting lamp 8, a virtual switch 9 is arranged in a connection loop of the sound circuit 7 and the power supply 6, the virtual switch 9 takes the base 11 or a single pivot 13 as one pole, a measuring head 323 of a measuring rod is a second pole, and the measuring head 323 contacts with a measured metal sheet during measurement to form conduction of the virtual switch 9 and make a sound to remind a tester that the measuring head touches an object to be measured; the illuminating lamp 8 is connected with the power supply 6 through the physical switch 91, so that the requirement of illumination during measurement is met, and the illuminating lamp 8 is an LED lamp.

The design of the sound-light circuit not only plays a role in contact reminding, but also can provide illumination for observation, and therefore the light irradiation angle can face the measuring head area. The scheme is most beneficial to measuring the conductive thin plate, can replace the manual judgment of the contact state of the measuring head and the thin plate, and triggers the buzzer unit to assist in confirming that the measuring head just contacts the surface of the measured metal thin plate.

And (3) measurement operation: the base 11 or the supporting point is far away from the point to be measured, the measuring device is placed, the cantilever 1 is swung to the position above the point to be measured, the knob 231 on the lifting sliding table 2 is adjusted, the dial indicator 3 is lowered to the position that the measuring head 323 at the lower end of the measuring rod just touches the surface of the thin plate, the stop cap 322 at the upper end of the measuring rod is pressed down after the dial indicator 3 is confirmed to return to zero, the thin plate is pressed and attached to the reference plane by the measuring head 323, namely the table top of the measuring table, and the reading of the dial indicator dial plate is observed, namely the side wave or middle wave deformation.

Claims

1. A sheet flatness measuring device comprises a cantilever, a lifting sliding table and a displacement measuring unit; the lifting sliding table is positioned on the cantilever and drives the displacement measuring unit to lift to complete the measuring action; the method is characterized in that: the displacement measuring unit is a dial indicator for reverse measuring action, and the dial indicator comprises an indicator body, a measuring rod penetrating through the indicator body in the radial direction and a built-in return spring; the reset spring is of a reverse structure and always keeps the measuring rod in the trend of the highest point; during measurement, the stop cap at the upper end of the measuring rod is pressed, the measuring head at the lower end of the measuring rod presses the thin plate to be attached to the reference plane, and the dial reading is the flatness value.

2. The device for measuring the flatness of a thin plate according to claim 1, wherein: the dial indicator is positioned on the lifting sliding table through a rotating shaft parallel to the measuring rod by means of an earring on the back, and can swing left and right around the rotating shaft.

3. A sheet flatness measuring apparatus according to claim 1 or 2, wherein: the cantilever is a single-end suspended structure, and the other end of the cantilever is rotationally positioned on the movable base or a fixed upright post of the measuring table; the base is a permanent magnetic chuck, a vacuum chuck, a screw rod clamp or a balancing weight; the lifting sliding table is locked on the end surface of the suspension end of the cantilever.

4. A sheet flatness measuring apparatus according to claim 3, wherein: the cantilever suspended end of the movable base is configured, and an anti-roll bar is also arranged and is suspended during measurement.

5. A sheet flatness measuring apparatus according to claim 1 or 2, wherein: the cantilever is a two-end supporting structure, wherein one end of the cantilever is a single fulcrum, and the other end of the cantilever is a double fulcrum, so that a triangular stable support is formed; a horizontal pulley is arranged on the cantilever, a lifting sliding table is locked on the pulley, and the pulley drives the dial indicator to move to a measuring position.

6. The device for measuring the flatness of a thin plate according to claim 5, wherein: the lifting sliding table is of a screw rod driving structure and comprises a fixed block, a sliding block, a screw rod and a screw nut; the sliding block is embedded on the fixed block in a sliding manner, the screw rod is rotationally positioned on the fixed block and matched with a nut fixed on the sliding block, and the sliding block is driven to move up and down by the screw rod; the end part of the screw rod is upward, and a knob is locked at the end part.

7. the device for measuring the flatness of a thin plate according to claim 5, wherein: the horizontal tackle is provided with a braking device, the braking device comprises a jackscrew and a handle fixed at the top end of the jackscrew, and the horizontal tackle is reliably positioned above the measuring position by means of the fact that the jackscrew is abutted against the cantilever; the cantilever is also provided with a graduated scale within the moving range of the horizontal pulley, and an alignment mark line or a corresponding alignment edge is correspondingly engraved on the horizontal pulley.

8. A sheet flatness measuring apparatus according to claim 1 or 2, wherein: the cantilever and the base are both made of aluminum alloy or metal section, a power supply, a sound circuit and a lighting lamp are arranged in or externally arranged in a cavity of one of the cantilever and the base, a virtual switch is arranged in a connecting loop of the sound circuit and the power supply, the virtual switch takes the base as one pole, a measuring head of the measuring rod is a second pole, and the measuring head is contacted with a measured metal sheet during measurement to form virtual switch conduction; the illuminating lamp is connected with the power supply through the entity switch.