CN220018433U

CN220018433U - Flatness detector

Info

Publication number: CN220018433U
Application number: CN202321211211.0U
Authority: CN
Inventors: 任贵龙; 徐菲; 刘孟姣; 高智慧; 刘雷洋; 马雪芳; 彭晓灿; 张宝文
Original assignee: Hebei Zhongce Metrology Testing Co ltd
Current assignee: Hebei Zhongce Metrology Testing Co ltd
Priority date: 2023-05-18
Filing date: 2023-05-18
Publication date: 2023-11-14
Anticipated expiration: 2033-05-18

Abstract

The utility model relates to the technical field of flatness detection tools, in particular to a flatness detector; the method can effectively improve the detection efficiency and the detection precision of the end surface flatness of the workpiece; the flatness detection device comprises a detection table, a hollow rotary table arranged on the detection table, a placement die table and a flatness detection mechanism, wherein the placement die table is fixedly arranged on the detection table, the placement die table is positioned in the middle of the hollow rotary table, the flatness detection mechanism comprises a frame body arranged on the hollow rotary table, a mounting seat arranged on the frame body, a cantilever mount arranged on the mounting seat, a first dial indicator and a second dial indicator, the first dial indicator is arranged on the mounting seat, and the second dial indicator is arranged on the cantilever mount; the cantilever support comprises a cantilever support and a sliding seat which is slidably arranged on the cantilever support, the cantilever support is fixedly arranged on the mounting seat, and the second dial indicator is arranged on the sliding seat; further, the sliding seat is fixedly arranged on the cantilever support through bolts.

Description

Flatness detector

Technical Field

The utility model relates to the technical field of flatness detection tools, in particular to a flatness detector.

Background

Flatness, also known as flatness, is one of four form tolerances common in product geometry specifications, and is also one of the key indicators used to assess the quality of the formed surface of a product. For the mounting surface, flatness directly affects the fitting effect and fastening performance of the parts. Therefore, the flatness of the workpiece needs to be detected after the workpiece is processed.

The Chinese patent publication No. CN218628111U discloses a workpiece flatness detecting mechanism, which relates to the field of workpiece detecting tools, and comprises a substrate used for being placed on a workbench, wherein the substrate is used for placing a workpiece, and a positioning assembly is arranged on the substrate and used for fixing the workpiece on the substrate; the device further comprises a detection assembly, wherein the detection assembly is used for detecting a gap between a workpiece and the substrate. Before detecting the flatness of a workpiece, the workpiece is placed on a substrate, the workpiece is fixed by a positioning component, then a detecting component is inserted into a gap between the workpiece and the substrate for detection, in the process, if the detecting component can be easily inserted into the gap, the workpiece is obvious in warping and poor in flatness, if the detecting component is difficult to be inserted into the gap, the flatness of the workpiece is qualified, so that the purpose of detecting the flatness of the workpiece can be achieved, and the qualification rate of products can be improved.

However, when the present inventors embodied this device, the following drawbacks were found to exist: the operation is complex, and the workpiece flatness detection efficiency needs to be further improved; the detection precision of the surface flatness of the workpiece needs to be further improved; flatness errors are difficult to datamation.

Disclosure of Invention

(one) solving the technical problems

Aiming at the defects of the prior art, the utility model provides a device which can overcome the defects of complex operation and low workpiece flatness detection efficiency; the detection precision of the surface flatness of the workpiece is poor; flatness error is difficult to be dataized.

(II) technical scheme

In order to achieve the above purpose, the present utility model provides the following technical solutions: the flatness detector comprises a detection table, a hollow rotary table arranged on the detection table, a placement die table and a flatness detection mechanism, wherein the placement die table is fixedly arranged on the detection table, the placement die table is positioned in the middle of the hollow rotary table, the flatness detection mechanism comprises a frame body arranged on the hollow rotary table, a mounting seat arranged on the frame body, a cantilever mount arranged on the mounting seat, a first dial indicator and a second dial indicator, the first dial indicator is arranged on the mounting seat, and the second dial indicator is arranged on the cantilever mount; further, the workpiece to be detected is a planar workpiece with upper and lower end surfaces, such as a glass screen and the like, a placing die groove matched with the workpiece is arranged on the placing die table, the detection ends of the first dial indicator and the second dial indicator are coplanar, and the detection ends of the first dial indicator and the second dial indicator are in close contact with the upper end surface of the workpiece; further, the hollow rotary table is a conventional known device in the market and comprises a base and a rotary table rotatably arranged on the base, wherein a driving assembly for providing power for the rotation of the rotary table is arranged on the base, and the driving assembly can adopt a servo motor to realize automatic driving of the rotary table through the servo motor; the driving assembly can also adopt a hand wheel and a gear box, and the turntable is manually driven to rotate through the hand wheel and the gear box.

Preferably, the cantilever support comprises a cantilever support and a sliding seat which is slidably arranged on the cantilever support, the cantilever support is fixedly arranged on the mounting seat, and the second dial indicator is arranged on the sliding seat; further, the sliding seat is fixedly arranged on the cantilever support through bolts.

Preferably, the mounting seat is slidably mounted on the frame body; further, the frame body is provided with a guide rod in a sliding mode, the installation seat is arranged on the guide rod in a sliding mode, and the installation seat is arranged on the guide rod in a fastening mode through screws.

Preferably, the placing die table comprises a lifting frame and a placing die holder arranged at the top of the lifting frame, and the height of the placing die holder is adjusted in a lifting manner through the lifting frame; furthermore, a die placing groove is arranged in the die placing seat.

Preferably, the lifting frame comprises an internal thread cylinder and an adjusting screw rod, and the adjusting screw rod is screwed in the thread cylinder.

Preferably, a spring is arranged in the threaded cylinder, and the adjusting screw is elastically connected with the threaded cylinder through the spring.

Preferably, the placing die holder is detachably mounted on the top of the adjusting screw through bolts.

(III) beneficial effects

Compared with the prior art, the utility model provides a flatness detector, which has the following beneficial effects: the method comprises the steps that a workpiece to be detected is placed at a placing die table, a first dial indicator and a second dial indicator are in contact with the end face of the workpiece to be detected, readings of the first dial indicator and the second dial indicator are recorded, at the moment, the centers of the first dial indicator and the workpiece to be detected coincide, then a hollow rotary table drives a mounting frame to rotate, the second dial indicator performs circular motion, a measuring end of the second dial indicator performs multi-point position detection on the workpiece to be detected, and measured values of the second dial indicator on all circumferential points are recorded, if the readings of the second dial indicator and the readings of the first dial indicator are consistent or the differences are within a certain error allowable range, the surface flatness of the workpiece is good, otherwise, the surface flatness of the workpiece is unqualified, the next workpiece is continuously detected, the method is convenient and fast to operate, the detection efficiency of the end face flatness of the workpiece can be effectively improved, the difference value of the first dial indicator and the second dial indicator is measured rapidly, the measured for a plurality of points on the end face of the workpiece can be obtained, the measured value is reduced, and more measured data are obtained, and the measured data are more accurately, so that the flatness detection accuracy of the workpiece is improved.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic diagram of the front view of the present utility model;

FIG. 3 is a schematic cross-sectional view of the structure of FIG. 2 at A-A in accordance with the present utility model;

the reference numerals in the drawings: 1. a detection table; 2. a hollow rotary table; 3. a frame body; 4. a mounting base; 5. cantilever mount; 6. a first dial gauge; 7. a second dial gauge; 8. cantilever support; 9. a slide; 10. placing a die holder; 11. a thread cylinder; 12. adjusting a screw; 13. and (3) a spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the flatness detector of the present utility model includes a detecting table 1, a hollow rotating table 2 mounted on the detecting table 1, a placing die table and a flatness detecting mechanism, wherein the placing die table is fixedly mounted on the detecting table 1, the placing die table is located in the middle of the hollow rotating table 2, the flatness detecting mechanism includes a frame body 3 mounted on the hollow rotating table 2, a mounting seat 4 mounted on the frame body 3, a cantilever mount 5 mounted on the mounting seat 4, a first dial indicator 6 and a second dial indicator 7, the first dial indicator 6 is mounted on the mounting seat 4, and the second dial indicator 7 is mounted on the cantilever mount 5; further, the workpiece to be detected is a planar workpiece with upper and lower end surfaces, such as a glass screen, and a placing die groove matched with the workpiece is arranged on the placing die table, the detection ends of the first dial indicator 6 and the second dial indicator 7 are coplanar, and the detection ends of the first dial indicator 6 and the second dial indicator 7 are in close contact with the upper end surface of the workpiece; further, the hollow rotary table 2 is a conventional known device in the market and comprises a base and a rotary table rotatably mounted on the base, wherein a driving assembly for providing power for the rotation of the rotary table is mounted on the base, and the driving assembly can adopt a servo motor to realize automatic driving of the rotary table through the servo motor; the driving component can also adopt a hand wheel and a gear box, and the turntable is manually driven to rotate through the hand wheel and the gear box; in this embodiment, the central axis of the measuring end of the first dial indicator 6 passes through the central point of the workpiece to be detected, and the measuring end of the first dial indicator 6 coincides with the central axis of the hollow rotary table 2.

Specifically, cantilever mount 5 includes cantilever brace 8 and slide 9 slidably mounted on cantilever brace 8, cantilever brace 8 is fixedly mounted on mount pad 4, second dial indicator 7 is mounted on slide 9; further, the sliding seat 9 is fixedly arranged on the cantilever support 8 through bolts; through adjustment slide 9, make interval change between second percentage table 7 and the first percentage table 6, detect the different diameter circle point positions of work piece through second percentage table 7, improve work piece terminal surface detection range, further improve the detection precision of work piece.

Specifically, the mounting seat 4 is slidably mounted on the frame body 3; further, a guide rod is slidably arranged at the frame body 3, the mounting seat 4 is slidably arranged on the guide rod, and the mounting seat 4 is fixedly arranged on the guide rod through a screw; the position of the mounting seat 4 on the mounting frame is adjusted to change the measuring point position of the first dial indicator 6, the workpiece in a treatment state is in a transverse placement state, the position of the first dial indicator 6 is adjusted to move to carry out multi-point detection on each point position at the transverse straight line of the workpiece, then the hollow rotary table 2 drives the placement die table to rotate by 90 degrees, the workpiece is longitudinally placed, the first dial indicator 6 carries out multi-point detection on each point at the longitudinal straight line of the workpiece, the position of the mounting seat 4 and the hollow rotary table 2 drive the workpiece rotation angle to realize the omnibearing detection on the end face of the workpiece, the convenience of detecting the flatness data of the end face of the workpiece is improved, more effective data can be obtained, and the data is analyzed and processed to obtain whether the workpiece is qualified or not, and the detection precision of the surface flatness of the workpiece is further improved.

Specifically, the placing die table comprises a lifting frame and a placing die holder 10 arranged at the top of the lifting frame, and the height of the placing die holder 10 is adjusted in a lifting manner through the lifting frame; further, a placing die groove is arranged on the placing die holder 10; the placing die groove is correspondingly changed according to the appearance of the workpiece so as to limit the workpiece, the workpiece is placed in the placing die groove, the height of the workpiece is adjusted through the lifting frame, the upper end face of the workpiece is tightly contacted with the measuring ends of the first dial indicator 6 and the second dial indicator 7, the measuring requirement of the surface flatness of the workpiece with multiple thicknesses is met, the lifting frame is lowered in the feeding and discharging process of the workpiece, a certain distance is reserved between the first dial indicator 6, the second dial indicator 7 and the workpiece, and interference between feeding and discharging of the workpiece by the first dial indicator 6 and the second dial indicator 7 is avoided so as to improve the convenience of feeding and discharging of the workpiece in the placing die groove.

Specifically, the lifting frame comprises an internal thread cylinder 11 and an adjusting screw rod 12, and the adjusting screw rod 12 is screwed in the thread cylinder 11; the height position of the die placing groove is changed by rotating the adjusting screw 12 so as to realize the adjustment and arrangement of the height position of the workpiece; the lifting frame can also adopt a scissor lifting frame or other equivalent components with equivalent lifting and adjusting effects.

Specifically, a spring 13 is installed in the threaded cylinder 11, and the adjusting screw 12 is elastically connected with the threaded cylinder 11 through the spring 13; the spring 13 enables the adjusting screw rod 12 to be in close contact with the threaded cylinder 11, so that the position of the die placing groove is prevented from being changed due to self-rotation of the adjusting screw rod 12 in the threaded cylinder 11, and the stability of the placing position of a workpiece is ensured.

Specifically, the placement die holder 10 is detachably mounted on the top of the adjusting screw 12 through bolts; different placing die grooves can be replaced according to the outline dimension and the like of the workpiece to be detected, so that the measurement accuracy of the surface flatness of the workpieces with multiple dimensions is met.

When the device is used, a standard workpiece with a flat surface is placed on the placing die holder 10, the measuring ends of the first dial indicator 6 and the second dial indicator 7 are in contact with the standard workpiece, zero setting adjustment is carried out on the first dial indicator 6 and the second dial indicator 7, then the standard workpiece is taken down, the workpiece to be detected is placed in a placing die groove on the placing die holder 10, the middle point of the workpiece is detected by the first dial indicator 6, the hollow rotary table 2 drives the frame body 3 to rotate, the second dial indicator 7 moves circularly on the surface of the workpiece, multi-point detection is carried out on the surface of the workpiece by the second dial indicator 7, detection data are recorded and processed, the reading of the first dial indicator 6 and the second dial indicator 7 is consistent or the difference value of the first dial indicator and the second dial indicator 7 is in an error allowable range, the surface flatness of the workpiece is good, and the difference value exceeds the allowable range, and the surface flatness of the workpiece is unqualified.

It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment described may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. A flatness detector is characterized in that; including detecting platform (1), install cavity revolving stage (2) on detecting platform (1), place mould platform and flatness detection mechanism, place mould platform fixed mounting on detecting platform (1), place mould platform and be located cavity revolving stage (2) middle part, flatness detection mechanism is including installing support body (3) on cavity revolving stage (2), install mount pad (4) on support body (3), install cantilever mount (5) on mount pad (4), first percentage table (6) and second percentage table (7), install on mount pad (4) first percentage table (6), install on cantilever mount (5) second percentage table (7).

2. The flatness detector according to claim 1, characterized in that the cantilever mount (5) comprises a cantilever stay (8) and a slide (9) slidably mounted on the cantilever stay (8), the cantilever stay (8) is fixedly mounted on the mounting base (4), and the second dial indicator (7) is mounted on the slide (9).

3. Flatness detector according to claim 2, characterized in that the mounting base (4) is slidably mounted on the frame body (3).

4. A flatness detector according to claim 3, characterized in that the placement die comprises a lifting frame and a placement die holder (10) mounted on top of the lifting frame, the height of the placement die holder (10) being adjusted up and down by the lifting frame.

5. The flatness detector according to claim 4, characterized in that the lifting frame comprises an internally threaded cylinder (11) and an adjusting screw (12), the adjusting screw (12) being screwed into the threaded cylinder (11).

6. The flatness detector according to claim 5, characterized in that a spring (13) is installed in the screw cylinder (11), and the adjusting screw (12) is elastically connected with the screw cylinder (11) through the spring (13).

7. The flatness detector according to claim 6, characterized in that the placement die holder (10) is detachably mounted on top of the adjusting screw (12) by means of bolts.