CN218584047U - Screw straightness detection device - Google Patents
Screw straightness detection device Download PDFInfo
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- CN218584047U CN218584047U CN202222514038.3U CN202222514038U CN218584047U CN 218584047 U CN218584047 U CN 218584047U CN 202222514038 U CN202222514038 U CN 202222514038U CN 218584047 U CN218584047 U CN 218584047U
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Abstract
The utility model discloses a screw straightness accuracy detection device is the straightness accuracy of the screw that awaits measuring that is used for the cooperation to measure on the segmentation carousel of installing on the mounting panel of graduation carousel. This application screw straightness accuracy detection device includes three parts: the device comprises a rotating mechanism, a pressing mechanism and a detection mechanism. The rotating mechanism is arranged beside the indexing turntable so as to clamp and rotate the screw to be tested on the indexing turntable. The pressing mechanism is arranged below the indexing turntable and used for pressing the screw to be detected on the rotating mechanism, so that the screw to be detected is kept stable in the rotating process, mechanical deviation caused by rotation is reduced, and the detection accuracy is ensured. The detection mechanism detects the displacement of the screw to be detected in the rotation process according to the displacement principle. The data of the surface straightness of the screw to be measured is achieved through the acquisition of the displacement.
Description
Technical Field
The utility model relates to the field of machinary, the more specifically screw straightness accuracy detection device that says so.
Background
The delivery of the screw needs to carry out various accuracy standard detection, especially the detection of the straightness. At present, the detection is generally carried out in the form of a linear sleeve in the market, and if the screw can smoothly pass through the linear sleeve, the screw is qualified; if the straight sleeve can not pass through the straight sleeve smoothly, the sleeve is judged to be unqualified.
The detection mode is simple, but the detection data can not be realized, the quality of the screw can not be accurately controlled, and the improvement and the promotion of the technology are not facilitated. And the sleeve joint with the linear sleeve is rigid sleeve joint, so that the loss of the linear sleeve is large.
SUMMERY OF THE UTILITY MODEL
The application provides a screw straightness accuracy detection device, its aim at solve prior art through the unable datamation of detection that straight line sleeve rigid connection leads to, can not accurate control screw quality's scheduling problem.
In order to achieve the technical purpose, the following technical scheme is adopted in the application:
screw straightness accuracy detection device, its straightness accuracy that is used for detecting the screw that awaits measuring on the graduation carousel includes: rotary mechanism, hold-down mechanism and detection mechanism, wherein:
rotary mechanism, it is located graduation carousel side for the centre gripping rotates the screw that awaits measuring, rotary mechanism includes: the main rotating bracket is fixed beside the indexing turntable; the first motor is fixed at the upper end of the main rotating bracket through a motor mounting plate and is positioned above the indexing turntable; the rotating shaft is connected with the first motor, the first motor drives the selecting shaft to rotate, and a screw flange end face connecting part is arranged at the lower end of the rotating shaft; the tail protection part is fixed on the rotary main support and comprises a tail protection plate, a through hole is formed in the middle of the tail protection plate, and the center line of the through hole is overlapped with the center line of the connecting part of the end face of the screw flange;
the hold-down mechanism is arranged below the indexing turntable and right opposite to the rotating mechanism, the hold-down mechanism is used for tightly pressing and clamping the screw to be tested on the rotating mechanism, and the hold-down mechanism comprises: the upper end surface of the pressing bearing base is provided with a guide rail; the pressing bearing mounting plate is fixed on a sliding block, and the sliding block is limited on the guide rail; one end face, facing the screw to be tested, of the pressing bearing mounting plate is a U-shaped face, two pressing bearings which are abutted against each other are mounted at the top of the U-shaped face, and the two pressing bearings and the U-shaped face form a pushing face; the third air cylinder is fixed at the top of the pressing bearing base, and a piston rod of the third air cylinder is connected with the sliding block;
detection mechanism locates rotary mechanism's another side, detection mechanism just right the screw that awaits measuring, detection mechanism includes: the side surface of the detection bracket is provided with a dovetail groove guide rail; at least two detection portions connect in on the detection support, detection portion includes: the dovetail groove sliding block is limited on the dovetail groove guide rail; the detection mounting plate is connected to the dovetail groove sliding block, and a displacement sliding block is arranged on the detection mounting plate; the displacement guide rail is limited on the displacement slide block, a spring in a normal compression state is sleeved at the front section of the displacement guide rail, and a measuring bearing is arranged on the front end face of the displacement guide rail; the rear section of the displacement guide rail is provided with a mandril; the measuring bearing is in contact with the screw to be measured, and the spring positioned behind the measuring bearing stretches and retracts according to stress to drive the displacement guide rail to generate a displacement amount; the displacement sensor is connected with the rear end surface of the displacement guide rail so as to sense the displacement of the displacement guide rail; and the adjusting cylinder is arranged on the detection mounting plate, a piston rod of the adjusting cylinder is aligned to the ejector rod, and when the screw to be detected is about to reach the detection position, the adjusting cylinder pushes the ejector rod to drive the displacement guide rail and the measuring bearing to avoid the screw to be detected.
Preferably, the rotating main support comprises: the two guide rods sequentially penetrate through the first mounting plate, the second mounting plate and the third mounting plate from bottom to top; the upper surface of the first mounting plate is provided with a second linear bearing corresponding to the guide rod, and the bottom end of the guide rod is connected to the second linear bearing; the second mounting plate is provided with a corresponding first linear bearing, and the guide rod penetrates through the first linear bearing; a first cylinder connected to the first mounting plate; the top end of the adjusting screw rod is fixed on the lower surface of the second mounting plate, the tail end of the adjusting screw rod is connected with the first air cylinder, and the relative height of the second mounting plate is adjusted under the driving of the first air cylinder; a second cylinder connected to the first mounting plate; the second cylinder is connected with one of the second linear bearings to drive the guide rod to move up and down; and the mounting base is connected below the mounting base of the indexing turntable through a bolt.
Preferably, a lifting adjusting hand wheel is arranged on the dovetail groove sliding block and used for adjusting the dovetail groove sliding block to move up and down.
Preferably, the detection mechanism further comprises a base, the base is provided with a base sliding rail, and the detection support is connected to the base sliding rail through a base sliding block.
Preferably, a front-back adjusting hand wheel is arranged on the base sliding rail, and the base sliding block is adjusted to move relative to the base sliding rail through the front-back adjusting hand wheel.
By adopting the technical scheme, the screw straightness detection device of the application passes through rotary mechanism will await measuring the screw centre gripping and select, right by detection mechanism again the screw that awaits measuring carries out 360 straightness accuracy and detects, obtains accurate numerical value through displacement sensor, and the digitization management and control of being convenient for can accurately control the screw quality.
Drawings
FIG. 1 is a schematic view of a screw straightness detection device according to the present application;
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a schematic structural view of the rotating mechanism;
FIG. 4 is a schematic view of the pressing mechanism;
fig. 5 is a schematic structural view of the detection mechanism.
Detailed Description
The technical solution of the present invention is further specifically described below by way of embodiments and with reference to the accompanying drawings.
Referring to fig. 1 and 2, the screw linearity detecting device of the present application is installed on an installation plate a of an index turntable and is used for measuring the linearity of a screw to be measured on a segment turntable in a matching manner. This application screw straightness accuracy detection device includes three parts: a rotating mechanism 1, a pressing mechanism 2 and a detecting mechanism 3. Wherein, rotary mechanism 1 sets up in the side of graduation carousel B to the screw 4 that awaits measuring on centre gripping and the rotatory graduation carousel B. Part of the structure of the rotary structure 1 is arranged below the mounting plate a of the indexing table, in connection with the operating height and the working surface finish. The pressing mechanism 2 is arranged below the indexing turntable B, and the pressing mechanism 2 is used for pressing the screw to be detected on the rotating mechanism 1, so that the screw to be detected is kept stable in the rotating process, the mechanical deviation caused by rotation is reduced, and the detection accuracy is ensured. The detection mechanism 3 detects the displacement of the screw to be detected in the rotation process by the displacement principle. The surface straightness of the screw to be measured is digitalized by obtaining the displacement.
Fig. 1, 2, and 3 are schematic structural views of the rotating mechanism 1 according to the present invention. As shown in the figure, the rotating mechanism 1 comprises a main rotating bracket, a first motor 12, a rotating shaft 13, a tail protection part 14, a first air cylinder 15, a second air cylinder 16, an adjusting screw rod 17 and the like.
The main rotary bracket is formed by two guide rods 111 which are arranged in parallel and sequentially penetrate through a first mounting plate 112, a second mounting plate 113 and a third mounting plate 114 from bottom to top. Two second linear bearings 115 are disposed on the upper surface of the first mounting plate 112, and the bottom end of the guide rod 111 is correspondingly connected to one second linear bearing 115 and is limited on the first mounting plate 112. A corresponding first linear bearing 116 is arranged on the second mounting plate 113, and the guide rod 111 passes through the first linear bearing 116. The first mounting plate 112 is mounted below the mounting plate a of the indexing table through which the guide rods 111 pass. A first cylinder 15, a second cylinder 16, and an adjusting screw 17 are provided below the first mounting plate 112. The mounting base 18 is connected below the mounting seat A of the indexing rotary table through bolts. The first cylinder 15 and the second cylinder 16 are provided on the mounting base 18. The top end of the adjusting screw rod 17 passes through the first mounting plate 112 and then is fixed on the lower surface of the second mounting plate 113, the tail end of the adjusting screw rod 17 is connected with the first cylinder 15, and the adjusting screw rod 17 is driven by the first cylinder 15 to adjust the relative height of the second mounting plate 113. The second cylinder 16 is attached to the first mounting plate 112. The second cylinder 16, the guide rod 111 and the linear shaft cooperate to drive the first mounting plate 112 to move up and down integrally, so as to realize the up and down movement of the rotating shaft 13.
The first motor 12 is fixed to the upper end of the rotating main stand 11 by a motor mounting plate 121. The first motor 12 is connected with the rotating shaft 13 through a synchronous belt of a synchronous wheel, and the rotating shaft 13 is driven to rotate by the first motor 12. The lower end of the rotating shaft 13 is provided with a screw flange end face connecting portion 131 (the screw flange end face connecting portion 131 may be a hexagonal sleeve or a tapered sleeve), and the screw flange end face connecting portion 131 can fix the flange end face of the screw.
The tail protection part 14 is fixed on a second mounting plate 113 of the rotary main bracket, and the second mounting plate 113 moves up and down under the driving of the adjusting screw rod 17 so as to realize the up-and-down movement of the tail protection part 14. The tail protection part 14 comprises a tail protection plate 141, a through hole is arranged in the middle of the tail protection plate 141, and the center line of the through hole is coincident with the center line of the end face connecting part of the screw flange. The tail protection part 14 and the second mounting plate 113 are lifted upwards under the action of the screw rod 17 and the first air cylinder 15, clamp the corresponding screw to be tested on the indexing turntable together with the screw flange end face connecting part 131, and then rotate 360 degrees under the action of the first motor 12 and the rotating shaft 13.
As shown in fig. 1, 2, and 4, the pressing mechanism 2 of the present application includes: a pressure bearing base 21, a pressure bearing mounting plate 22, a slider 23, a pressure bearing 24, a third cylinder 25, and the like.
The upper end surface of the pressing bearing base 21 is provided with a guide rail 211. The pressure bearing mounting plate 22 is fixed on a sliding block 23, and the sliding block 23 is limited on the guide rail 211. One end face, facing the screw to be tested, of the pressing bearing mounting plate 22 is a U-shaped face, two pressing bearings 24 which are abutted against each other are mounted at the top of the U-shaped face, and the two pressing bearings 24 and the U-shaped face form an abutting face. A third cylinder 25 is fixed on the top of the pressing bearing base 21, and a piston rod of the third cylinder 25 is connected with the sliding block 23. The third air cylinder 25 adjusts the slide block 23 to drive the hold-down bearing mounting plate 22 to move back and forth so as to adjust the distance between the hold-down bearing 24 and the screw to be measured.
Referring to fig. 1, 2 and 5, a detecting mechanism 3 according to the present invention is shown. The detection mechanism 3 is arranged on the other side face of the rotating mechanism, and the detection mechanism 3 is over against the screw to be detected. The detection mechanism 3 includes: the detecting bracket 31 and at least two detecting parts 32 (the two detecting parts 32 are taken as an example in the embodiment).
A dovetail groove guide rail 311 is arranged on one side surface of the detection bracket 31, and the two detection parts 32 are respectively fixed on the dovetail groove guide rail 311 through a dovetail groove slide block 33. The bottom of the detecting bracket 31 is further provided with a base 312, and a base slide rail 313 is arranged on the base 312. The detecting bracket 31 is connected to the base slide rail 313 through the base slide 314. A front-back adjusting hand wheel 315 is arranged on the base slide rail 313, and the base slide block 314 is adjusted to move relative to the base slide rail 313 through the front-back adjusting hand wheel 315.
The detection unit 32 includes a dovetail groove slider 321, a detection mounting plate 322, a displacement slider 323, a displacement guide rail 324, a spring 325 in a normal compression state, a measurement bearing 326, an adjustment cylinder 327, an up-down adjustment hand wheel 330, and the like. The entire detection unit 32 is restricted to the dovetail guide rails 311 by the dovetail sliders 321. The detection mounting plate 322 is connected to the dovetail groove sliding block 321, and a displacement sliding block 323 is arranged on the detection mounting plate 322. The shift guide 324 is limited on the shift slider 323, the shift slider 323 is a fixed structure, and the shift guide 324 moves relative to the shift slider 323. The front section of the displacement guide 324 is sleeved with a spring 325 in a normal compression state, and the front end surface of the displacement guide 323 is provided with a measuring bearing 326. As shown in fig. 5, a post 328 is provided at a rear section of the displacement guide 323. The measuring bearing 326 is used for contacting with the detection surface of the screw to be detected, and the spring 325 in a normal compression state is positioned behind the measuring bearing 326. The spring extends or contracts according to a force to drive the displacement guide rail 324 to generate a displacement, and the displacement sensor 329 is connected with the rear end surface of the displacement guide rail 324 to sense the displacement of the displacement guide rail 324. Adjusting cylinder 327 locates on detecting the mounting panel 322, adjusting cylinder 327's piston rod aligns ejector pin 328, works as when the screw that awaits measuring is about to reach the detection position, adjusting cylinder 327 promotes ejector pin 328 drives displacement guide rail 324 and measures bearing 326 and avoids the screw that awaits measuring prevents that the collision from causing each part damage and detect inaccurately.
The detection part of the application firstly pushes the ejector rod 328 through the adjusting cylinder 329 to avoid the screw to be detected. After the screw is in place, the measurement bearing 326 contacts the detection surface of the screw. During detection, when the size of the screw to be detected is larger than that of the standard screw, the measuring bearing is stressed to compress the spring backwards, the displacement guide rail is pushed, and a displacement amount is generated. When the size of the screw to be measured is smaller than that of the standard screw, the spring pushes the measuring bearing to move forwards, and a displacement is generated. The displacement sensor senses the displacement and transmits the data to the PLC, so that the purpose of datamation is achieved.
This application is convenient for provide accurate data guidance for the production of screw through rotary mechanism, hold-down mechanism and detection mechanism with the detection datamation of the screw that awaits measuring, can accurate control screw quality.
The above-described embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention. Those skilled in the art will recognize that changes and modifications can be made in the invention as described herein without departing from the scope of the invention as defined by the appended claims.
Claims (5)
1. Screw straightness accuracy detection device, its straightness accuracy that is used for detecting the screw that awaits measuring on the graduation carousel, its characterized in that includes: rotary mechanism, hold-down mechanism and detection mechanism, wherein:
rotary mechanism, it is located indexing turntable side for the centre gripping rotates the screw that awaits measuring, rotary mechanism includes:
the main rotating bracket is fixed beside the indexing turntable;
the first motor is fixed at the upper end of the main rotating bracket through a motor mounting plate and is positioned above the indexing turntable;
the rotating shaft is connected with the first motor and driven to rotate by the first motor, and a screw flange end face connecting part is arranged at the lower end of the rotating shaft;
the tail protection part is fixed on the rotary main support and comprises a tail protection plate, a through hole is formed in the middle of the tail protection plate, and the center line of the through hole is superposed with the center line of the end face connecting part of the screw flange;
hold-down mechanism locates the below of graduation carousel just right rotary mechanism, hold-down mechanism is used for compressing tightly the centre gripping in rotary mechanism is last the screw that awaits measuring, hold-down mechanism includes:
the upper end surface of the pressing bearing base is provided with a guide rail;
the pressing bearing mounting plate is fixed on a sliding block, and the sliding block is limited on the guide rail; one end face, facing the screw to be tested, of the pressing bearing mounting plate is a U-shaped face, two pressing bearings which are abutted against each other are mounted at the top of the U-shaped face, and the two pressing bearings and the U-shaped face form an abutting face;
the third air cylinder is fixed at the top of the pressing bearing base, and a piston rod of the third air cylinder is connected with the sliding block;
detection mechanism locates rotary mechanism's another side, detection mechanism just right the screw that awaits measuring, detection mechanism includes:
the side surface of the detection bracket is provided with a dovetail groove guide rail;
at least two detection portions connect in on the detection support, detection portion includes:
the dovetail groove sliding block is limited on the dovetail groove guide rail;
the detection mounting plate is connected to the dovetail groove sliding block, and a displacement sliding block is arranged on the detection mounting plate;
the displacement guide rail is limited on the displacement slide block, a spring in a normal compression state is sleeved at the front section of the displacement guide rail, and a measuring bearing is arranged on the front end surface of the displacement guide rail; the rear section of the displacement guide rail is provided with a mandril; the measuring bearing is in contact with the screw to be measured, and the spring positioned behind the measuring bearing stretches and retracts according to stress so as to drive the displacement guide rail to generate a displacement;
a displacement sensor connected to a rear end surface of the displacement guide rail to sense a displacement amount of the displacement guide rail;
and the adjusting cylinder is arranged on the detection mounting plate, a piston rod of the adjusting cylinder is aligned to the ejector rod, and when the screw to be detected is about to reach the detection position, the adjusting cylinder pushes the ejector rod to drive the displacement guide rail and the measuring bearing to avoid the screw to be detected.
2. The screw straightness detection device according to claim 1, wherein the rotating main bracket comprises:
the two guide rods sequentially penetrate through the first mounting plate, the second mounting plate and the third mounting plate from bottom to top; the upper surface of the first mounting plate is provided with a second linear bearing corresponding to the guide rod, and the bottom end of the guide rod is connected to the second linear bearing; the second mounting plate is provided with a corresponding first linear bearing, and the guide rod penetrates through the first linear bearing;
the first cylinder is connected to the first mounting plate;
the top end of the adjusting screw rod is fixed on the lower surface of the second mounting plate, the tail end of the adjusting screw rod is connected with the first air cylinder, and the relative height of the second mounting plate is adjusted under the driving of the first air cylinder;
the second cylinder is connected to the first mounting plate; the second cylinder is connected with one of the second linear bearings to drive the guide rod to move up and down;
and the mounting base is connected below the mounting base of the indexing turntable through bolts.
3. The screw straightness detection device according to claim 1, wherein a lifting adjusting hand wheel is arranged on the dovetail groove sliding block, and the lifting adjusting hand wheel adjusts the dovetail groove sliding block to move up and down.
4. The device for detecting the straightness of a screw according to claim 1, wherein the detecting mechanism further comprises a base, a base slide rail is disposed on the base, and the detecting bracket is connected to the base slide rail through a base slide block.
5. The screw straightness detection device according to claim 4, wherein a front and rear adjustment hand wheel is provided on the base slide rail, and the base slide block is adjusted to move relative to the base slide rail by the front and rear adjustment hand wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222514038.3U CN218584047U (en) | 2022-09-22 | 2022-09-22 | Screw straightness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222514038.3U CN218584047U (en) | 2022-09-22 | 2022-09-22 | Screw straightness detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218584047U true CN218584047U (en) | 2023-03-07 |
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ID=85364252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222514038.3U Active CN218584047U (en) | 2022-09-22 | 2022-09-22 | Screw straightness detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218584047U (en) |
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2022
- 2022-09-22 CN CN202222514038.3U patent/CN218584047U/en active Active
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