CN216308941U

CN216308941U - Device for rapidly detecting workpiece

Info

Publication number: CN216308941U
Application number: CN202122543238.7U
Authority: CN
Inventors: 林大军
Original assignee: Shandong Weida Machinery Co Ltd
Current assignee: Shandong Weida Machinery Co Ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-04-15
Anticipated expiration: 2031-10-21

Abstract

The utility model discloses a device for rapidly detecting a workpiece, which belongs to the field of detection of machined workpieces; it is equipped with the workstation, be provided with support frame and detection mechanism on the workstation, detection mechanism sets up on the support frame, detection mechanism is equipped with dynamic positioning subassembly, the sliding block subassembly, vertical spacing subassembly sets up the upper portion at the support frame, the lower part of vertical spacing subassembly is connected with stop gear and lever mechanism of amplification through connecting device, lever mechanism of amplification is connected on the scale, the downside of the scale other end is provided with dynamic positioning subassembly, the lower extreme of sliding block subassembly is connected with measuring probe, dynamic positioning subassembly is equipped with the location cylinder, measure clamp plate and laser correlation sensor. The utility model has simple and convenient installation, high detection speed and wide practicability and is convenient to use on an automatic assembly line.

Description

Device for rapidly detecting workpiece

Technical Field

The utility model relates to the field of detection of machined workpieces, in particular to a device for rapidly detecting workpieces.

Background

The checking fixture is a tool for detecting the size, dimension, angle or other indexes of a produced workpiece by a production enterprise, and has larger detection difficulty because the overall height of the workpiece to be measured is unstable, the upper end surfaces of a plurality of parts connected to the workpiece are not smooth, but the deviation among the parts is smaller; most of the existing detection modes are the sampling detection through instruments, the comprehensive visual detection is complex, the missed detection is serious, the detection effect is poor, the detection efficiency is low, and the use of a workpiece assembly production line cannot be met.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems in the prior art, the utility model provides a device for rapidly detecting a workpiece by utilizing a lever amplification principle and adopting a translation reference point dynamic positioning mode.

In order to solve the technical problems, the utility model is provided with a workbench, a support frame and a detection mechanism are arranged on the workbench, the detection mechanism is arranged on the support frame, the detection mechanism is provided with a dynamic positioning assembly, a sliding block assembly and a vertical limiting assembly, the vertical limiting assembly is arranged at the upper part of the support frame, the lower part of the vertical limiting assembly is connected with a limiting mechanism and a lever amplification mechanism through a connecting device, the lever amplification mechanism is connected on a scale, and the dynamic positioning assembly is arranged at the lower side of the other end of the scale; the lower end of the sliding block component is connected with a measuring probe; the dynamic positioning assembly is provided with a positioning cylinder, a measuring pressure plate and a laser correlation sensor.

Preferably, a rotary tool is arranged on the workbench, and the workpiece is arranged on the rotary tool; the support frame is adjacent to the rotary tool and is connected to the workbench, the workbench is further provided with a cylinder aligning assembly, and the upper end of the cylinder aligning assembly is connected with a clamping cylinder.

Preferably, the lower end of the vertical limiting component is connected with a first connecting plate, one side, away from the supporting frame, of the vertical limiting component is connected with a second connecting plate, the lower portion of the second connecting plate is connected with a limiting mechanism and a sliding block component, and the limiting mechanism is connected with the sliding block component.

Preferably, vertical spacing subassembly includes one-level cylinder, secondary cylinder and spacing buffering module, and the one-level cylinder is connected with the support frame, and the opposite side of one-level cylinder is connected with first slip subassembly, and the side of secondary cylinder is connected with second slip subassembly, and the lower extreme of one-level cylinder and secondary cylinder all is connected with first connecting plate, and the second connecting plate sets up the side at the secondary cylinder, and spacing buffering module sets up the upper end at the secondary cylinder.

Preferably, the sliding block assembly comprises a fixed shaft, a fixed block and a main shaft, and the fixed block is connected with a sliding block.

Preferably, the sliding block is connected with a measuring probe arranged at the lower end, the fixed shaft is horizontally arranged, one end of the fixed shaft is in threaded connection with the second connecting plate, and the fixed block is also connected with the second connecting plate.

Preferably, the lever amplification mechanism is movably connected with the end part of the fixed shaft, the lever amplification mechanism is rotatably connected with one end of the main shaft, the other end of the main shaft is connected with the upper part of the sliding block, and the outer side surface of the lever amplification mechanism is connected with the scale.

Preferably, the dynamic positioning assembly is further provided with a clamping plate and a detection bracket, and the clamping plate is connected with the first connecting plate; the laser correlation sensor is connected on detecting the support, detects the support and is connected with location cylinder or first connecting plate.

Preferably, the positioning cylinder is connected with the first connecting plate and the measuring pressing plate, the measuring pressing plate is adjacent to the measuring probe, and the measuring pressing plate and the measuring probe are both arranged above the rotary tool in the vertical direction.

Preferably, the end part of the clamping cylinder is provided with a clamping jaw, the clamping cylinder clamps the clamping jaw, the clamping jaw contracts, and the clamping jaw is in contact connection with the lower part of the support frame and the lower part of the clamping plate.

Preferably, the clamping cylinder is movably connected with the cylinder aligning assembly in the direction perpendicular to the supporting frame.

Preferably, the sliding block assembly, the lever amplifying mechanism, the limiting mechanism, the scale and the measuring probe move synchronously with the second connecting plate.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model has simple and convenient installation, high detection speed, wide practicability and convenient use on an automatic assembly line; by utilizing a lever amplification principle and adopting a translational reference point dynamic positioning mode, a quick and accurate measuring device is provided; the position of the highest point of a single workpiece is determined by using the rigid measuring pressure plate, the height is kept unchanged during translation, the position of the lowest point of the same workpiece is determined by using the rigid measuring probe, and the relative position difference is the measuring difference; the height of a single workpiece is uncertain, so that the positioning of the workpiece is dynamic, the measurement difference value is amplified through the lever amplification mechanism, the right end of the scale moves downwards to reach a set value, and the laser correlation sensor is triggered to give an alarm.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a portion of the vertical stop assembly of the present invention;

FIG. 3 is a schematic structural view of a lever amplification mechanism according to the present invention;

FIG. 4 is a schematic view of the utility model shown in partial cross-section at A-A in FIG. 2;

FIG. 5 is a schematic structural view of a spacing mechanism of the present invention;

FIG. 6 is a schematic view of a partial structure of the connecting and contacting portion of the clamping cylinder according to the present invention;

FIG. 7 is a schematic view of a partial structure of the measuring platen in high point positioning according to the present invention;

FIG. 8 is a schematic view of a partial structure of a measurement probe contacting a low point according to the present invention.

The symbols in the figures indicate:

11. a work table; 12. rotating the tool;

20. a workpiece; 201. a first workpiece part; 202. a second workpiece part; 203. a third workpiece part;

31. a measuring probe; 32. a slider assembly; 321. a fixed shaft; 322. a fixed block; 323. a main shaft; 324. a slider; 33. a limiting mechanism; 331. a limiting plate; 332. a limiting shaft; 333. a connecting plate; 34. a lever amplification mechanism; 35. a scale;

41. a second connecting plate; 42. a limiting buffer module; 43. a primary cylinder; 44. a secondary cylinder;

51. a support frame;

61. measuring a pressure plate; 62. positioning the air cylinder; 63. a first connecting plate; 64. a laser correlation sensor; 65. detecting the bracket; 66. a clamping plate;

71. a clamping cylinder; 711. a first jaw; 712. a second jaw; 72. a cylinder aligning assembly;

81. a first slide assembly; 82. a second slide assembly.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in 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 present application and are not intended to limit the present application.

Referring to fig. 1, the present invention provides a device for rapidly detecting a workpiece, which includes a worktable 11, a rotary tool 12 and a supporting frame 51 for supporting a workpiece 20 are connected above the worktable 11, and when the rotary tool 12 rotates, the workpiece 20 is synchronously driven to rotate; the support frame 51 is arranged adjacent to the rotary tool 12, the detection mechanism is connected to the support frame 51, and the support frame 51 is used for supporting and connecting the detection mechanism; an air cylinder aligning assembly 72 is further arranged on the workbench 11, and the upper end of the air cylinder aligning assembly 72 is movably connected with a clamping air cylinder 71; the detection mechanism is provided with a vertical limiting component, a sliding block component 32, a lever amplifying mechanism 34 and a dynamic positioning component.

As shown in fig. 2, the vertical limiting assembly is arranged at the upper part of the supporting frame 51, the vertical limiting assembly comprises a first-stage cylinder 43, a second-stage cylinder 44 and a limiting buffer module 42, the inner side surface of the first-stage cylinder 43 is fixedly connected with the side surface of the supporting frame 51, the outer side surface of the first-stage cylinder 43 is connected with a first sliding assembly 81, and the lower end of the first sliding assembly 81 is fixedly connected with the cylinder rod of the first-stage cylinder 43; the other side of the first sliding component 81 is fixedly connected with a second sliding component 82 through a connecting piece, the other side of the second sliding component 82 is movably connected with the secondary cylinder 44, and the lower end of the second sliding component 82 is fixedly connected with a cylinder rod of the secondary cylinder 44; spacing buffer module 42 is connected and fixed the upper end that sets up at second grade cylinder 44 with second grade cylinder 44, spacing buffer module 42 includes limiting plate and buffer beam, the fixed upper end that sets up at the second grade cylinder of limiting plate level, the vertical setting of buffer beam passes the limiting plate on the limiting plate and the lower extreme and protrudes downwards, with the upper end interval certain distance setting of second sliding component, spacing buffer module 42 moves down the in-process at second grade cylinder 44 and plays the effect of spacing buffering, when second grade cylinder moves down, spacing buffer module 42 is followed and is moved down, the butt is to the up end of second sliding component after moving down a section distance, thereby stop moving down.

In this embodiment, the lower ends of the primary cylinder 43 and the secondary cylinder 44 are both connected to a first connection plate 63, and the first connection plate 63 is a long plate-shaped structure and is horizontally disposed; the vertical limiting assembly is arranged at the left side part of the upper end surface of the first connecting plate 63, the right side part of the lower end surface of the first connecting plate 63 is connected with the positioning cylinder 62, one side, away from the second sliding assembly 82, of the secondary cylinder 44 is fixedly connected with the second connecting plate 41, and the second connecting plate is vertically arranged relative to the first connecting plate; the lower part of the second connecting plate 41 is connected with a slide block assembly 32, and the slide block assembly 32 is connected with a limiting mechanism 33.

Specifically, as shown in fig. 3 and 4, in the present embodiment, the sliding block assembly 32 includes a fixed shaft 321, a fixed block 322, and a main shaft 323, the fixed block 322 is vertically disposed at the lower outer side of the second connecting plate 41 and is fixedly connected to the second connecting plate 41, the fixed shaft 321 is vertically connected to the second connecting plate 41, one end of the fixed shaft 321 is in threaded connection with the second connecting plate 41, and the other end of the fixed shaft 321 is connected to the lever amplification mechanism 34 through a connecting bearing; the outer side of the fixed block 322 is slidably connected with a slide block 324, the bottom of the slide block 324 is fixedly connected with the measuring probe 31, and the slide block 324 can move up and down in the slide block assembly 32 so as to drive the measuring probe 31 to move down; the main shaft 323 is disposed adjacent to the fixed shaft 321, and the main shaft 323 is disposed horizontally, and one end thereof is connected to an upper portion of the slider 324 and the other end thereof is rotatably connected to the lever amplification mechanism.

Furthermore, in this embodiment, as shown in fig. 5, in the vertical direction, the limiting mechanism 33 is disposed at the lower side of the lever amplifying mechanism 34, the limiting mechanism 33 includes a limiting plate 331, a limiting shaft 332 and a connecting plate 333, the limiting plate 331 is connected to the second connecting plate 41 through the connecting plate 333, the limiting shaft 332 passes through a limiting hole on the limiting plate 331 and is fixedly disposed on the slider 324, and the limiting shaft 332 is in clearance fit with the limiting hole on the limiting plate 331; the limiting mechanism 33 limits the up-and-down movement of the sliding block 324, and ensures that the sliding block 324 cannot fall off.

In this embodiment, since the lever amplification mechanism 34 is movably connected to the end portions of the fixed shaft 321 and the main shaft 323, the lever amplification mechanism 34 can rotate with the end portion of the main shaft 323 as a fulcrum; the lateral surface of lever mechanism 34 of enlargiing is connected with scale 35, and lever mechanism 34 of enlargiing sets up the one end at scale 35, and the other end of scale 35 outwards extends along the horizontal direction, and dynamic positioning component sets up the downside at the other end of scale 35, and when lever mechanism 34 of enlargiing took place to rotate, drive scale 35 and take place to rotate with same fulcrum to the other end of scale 35 moves down and reaches the settlement numerical value, touches dynamic positioning component and just takes place to report to the police.

Specifically, in this embodiment, the dynamic positioning assembly is provided with a measuring pressure plate 61, a positioning cylinder 62 and a laser correlation sensor 64, the positioning cylinder 62 provides power for the dynamic positioning system, the upper part of the positioning cylinder 62 is connected with a first connecting plate 63, one end of the positioning cylinder 62 is connected with the measuring pressure plate 61 through a cylinder rod and a cylinder connecting plate, the measuring pressure plate 61 is horizontally arranged and adjacent to the measuring probe 31, and the measuring pressure plate 61 and the measuring probe 31 are both arranged above the rotary tool 12 in the vertical direction; the other end of the positioning cylinder is connected with a laser correlation sensor 64 through a bracket fixing plate, and the scale 35 is arranged above the laser correlation sensor 64.

Furthermore, in the present embodiment, the dynamic positioning assembly is further provided with a clamping plate 66 and a detection bracket 65, the laser correlation sensor 64 is arranged on the bracket fixing plate through the detection bracket 65, and the laser correlation sensor 64 is horizontally arranged on the detection bracket 65; the clamping plate 66 is vertically disposed inside the supporting frame 51, and the upper end of the clamping plate 66 is connected with the lower end of the first connecting plate 63.

Further, as another embodiment of the present invention, the detecting bracket 65 may be connected to the first connecting plate 63.

Furthermore, in this embodiment, when the measuring probe 31 and the measuring platen 61 are at the same horizontal position during the detection, the scale 35 should be set to be horizontal.

As shown in fig. 6, in this embodiment, the clamping cylinder 71 is disposed adjacent to the clamping plate 66, the cylinder aligning assembly 72 is used for timely adjusting a stress center when the clamping cylinder 71 is clamped, and the cylinder aligning assembly 72 is provided with a supporting plate and a sliding assembly to ensure that the clamping cylinder 71 can slide back and forth on the cylinder aligning assembly 72; the end part of the clamping cylinder 71 is provided with two clamping jaws which are respectively a first clamping jaw 711 and a second clamping jaw 712, wherein the first clamping jaw 711 is arranged on the outer side of the clamping plate 66 far away from the supporting frame 51, and the second clamping jaw 712 is arranged on the outer side of the supporting frame 51; therefore, the clamping plate 66 and the supporting frame 51 are arranged between the two clamping jaws, when the clamping cylinder 71 clamps, the clamping jaws contract, the first clamping jaw 711 is in contact connection with the lower part of the clamping plate 66, and the second clamping jaw 712 is in contact connection with the lower part of the supporting frame 51, so that the clamping action is completed.

Specifically, as shown in fig. 7 and 8, in this embodiment, each stage of cylinders completes the detection action in a linkage manner, the measurement pressure plate 61 determines the high point position of the workpiece 20 and keeps the height unchanged during translation, the measurement probe 31 determines the low point position of the workpiece 20, the height difference is amplified by the lever amplification mechanism 34, then the right end of the scale 35 swings, and the laser correlation sensor 64 performs measurement and control to complete the measurement and control action.

The working principle of the utility model is as follows:

assuming that three parts with uneven heights are arranged at the upper end of the workpiece 20, the high points of the parts are respectively expressed as a first workpiece part 201, a second workpiece part 202 and a third workpiece part 203 from high to low; firstly, compressing a first-stage cylinder 43, stretching a second-stage cylinder 44, compressing a positioning cylinder 62, opening a clamping cylinder 71, stopping the rotary tool 12, and setting the device in a preset state; then the positioning cylinder 62 stretches, the measuring pressure plate 61 moves left and is positioned right above the workpiece, the first-stage cylinder 43 stretches and exhausts air at two thirds of the downward position, and the cylinder moves downward by means of gravity to drive the measuring pressure plate 61 to stably contact with a first high-point workpiece part 201 of the workpiece; before the second-stage cylinder 44 descends, the positioning cylinder 62 compresses to drive the measuring pressure plate 61 to horizontally move right to form a dynamic positioning measuring datum point, after the clamping cylinder 71 clamps the clamping plate 66, the second-stage cylinder 44 descends, the rotary tool 12 rotates, the slide block 324 drives the measuring probe 31 to contact with the upper end face of the workpiece 20, and the front end of the measuring probe does not exceed the central position of the workpiece 20.

Specifically, the secondary cylinder 44 is compressed, the second connecting plate 41 is connected with the slide block assembly 32, the lever amplification mechanism 34, the limiting mechanism 33, the scale 35 and the measuring probe 31 connected to the slide block 324 to synchronously move downwards, the measuring probe 31 moves downwards to contact with the upper end face of the workpiece 20, and the rotating tool 12 rotates clockwise at a low speed; the measuring probe 31 descends to contact with the third workpiece part 203 at the low-point part of the workpiece, and the height difference formed between the measuring probe 31 and the measuring pressure plate 61 is transmitted to the right end of the scale 35 through the measuring probe 31, the slide block assembly 32 and the lever amplification mechanism 34; the laser correlation sensor 64 is fixed relative to the measuring pressure plate 61 in the vertical direction, when the measuring probe 31 and the measuring pressure plate 61 are set to be at the same horizontal position, the position of the scale 35 is adjusted to be horizontal, and when the right end of the scale 35 moves downwards by 6mm, the maximum height deviation of the three workpiece parts 203 at the low point part of the workpiece exceeds 0.5mm (set value), and the laser correlation sensor 64 generates an unqualified product alarm signal.

In conclusion, the utility model has the advantages of simple and convenient installation, high detection speed, wide practicability and convenient use on an automatic assembly line; the utility model determines the position of the highest point of a single workpiece by using a rigid measuring pressure plate 61, keeps the height unchanged during translation, determines the position of the lowest point of the same workpiece by using a rigid measuring probe 31, and the relative position difference is the measuring difference; because the height of a single workpiece is uncertain, the positioning of the workpiece is dynamic, the measurement difference is amplified and transmitted to the scale 35 through the lever amplifying mechanism 34, the right end of the scale 35 moves downwards to reach a set value, and the laser correlation sensor 64 is triggered to give an alarm.

In the description of the present invention, it is to be understood that the orientations or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for rapidly detecting a workpiece is provided with a workbench and is characterized in that a support frame and a detection mechanism are arranged on the workbench, the detection mechanism is arranged on the support frame, the detection mechanism is provided with a dynamic positioning assembly, a sliding block assembly and a vertical limiting assembly, the vertical limiting assembly is arranged at the upper part of the support frame, the lower part of the vertical limiting assembly is connected with a limiting mechanism and a lever amplifying mechanism through a connecting device, the lever amplifying mechanism is connected to a scale, and the dynamic positioning assembly is arranged at the lower side of the other end of the scale; the lower end of the sliding block component is connected with a measuring probe; the dynamic positioning assembly is provided with a positioning cylinder, a measuring pressure plate and a laser correlation sensor.

2. The device for rapidly detecting the workpiece according to claim 1, wherein a rotary tool is arranged on the workbench, and the workpiece is arranged on the rotary tool; the support frame with rotatory frock is adjacent to be set up and to be connected on the workstation, still be provided with cylinder aligning subassembly on the workstation, the upper end of cylinder aligning subassembly is connected with die clamping cylinder.

3. The device for rapidly detecting the workpiece according to claim 2, wherein a first connecting plate is connected to the lower end of the vertical limiting assembly, a second connecting plate is connected to one side, away from the supporting frame, of the vertical limiting assembly, a limiting mechanism and a sliding block assembly are connected to the lower portion of the second connecting plate, and the limiting mechanism is connected with the sliding block assembly.

4. The device for rapidly detecting the workpiece according to claim 3, wherein the vertical limiting assembly comprises a first-stage cylinder, a second-stage cylinder and a limiting buffer module, the first-stage cylinder is connected with the supporting frame, the other side of the first-stage cylinder is connected with a first sliding assembly, the side edge of the second-stage cylinder is connected with a second sliding assembly, the lower ends of the first-stage cylinder and the second-stage cylinder are connected with a first connecting plate, the second connecting plate is arranged on the side edge of the second-stage cylinder, and the limiting buffer module is arranged at the upper end of the second-stage cylinder.

5. The device for rapidly detecting the workpiece as claimed in claim 3, wherein the sliding block assembly comprises a fixed shaft, a fixed block and a main shaft, and a sliding block is connected to the fixed block.

6. The device for rapidly detecting the workpiece according to claim 5, wherein the sliding block is connected with a measuring probe arranged at the lower end, the fixed shaft is horizontally arranged, one end of the fixed shaft is in threaded connection with the second connecting plate, and the fixed block is also connected with the second connecting plate.

7. The device for rapidly detecting the workpiece as claimed in claim 6, wherein the lever amplification mechanism is movably connected with the end part of the fixed shaft, the lever amplification mechanism is rotatably connected with one end of the main shaft, the other end of the main shaft is connected with the upper part of the sliding block, and the outer side surface of the lever amplification mechanism is connected with the scale.

8. The device for rapidly detecting the workpiece as claimed in claim 3 or 7, wherein the dynamic positioning assembly is further provided with a clamping plate and a detection bracket, and the clamping plate is connected with the first connecting plate; the laser correlation sensor is connected on the detection support, and the detection support is connected with the positioning cylinder or the first connecting plate.

9. The device for rapidly detecting the workpiece according to claim 8, wherein the positioning cylinder is connected with the first connecting plate and the measuring pressure plate, the measuring pressure plate is arranged adjacent to the measuring probe, and the measuring pressure plate and the measuring probe are both arranged above the rotating tool in the vertical direction.

10. The device for rapidly detecting the workpiece as claimed in claim 9, wherein a clamping jaw is arranged at the end of the clamping cylinder, the clamping cylinder clamps the workpiece, the clamping jaw contracts, and the clamping jaw is in contact connection with the lower part of the supporting frame and the lower part of the clamping plate.

11. The apparatus for rapidly inspecting workpieces as claimed in claim 10, wherein the clamping cylinder is movably connected to the cylinder centering assembly in a direction perpendicular to the supporting frame.

12. The apparatus of claim 11, wherein the slide assembly, the lever amplification mechanism, the limiting mechanism, the scale and the measuring probe move synchronously with the second connecting plate.