CN116408370A - An automatic detection and correction system for cylindrical workpiece circular runout - Google Patents

Abstract

The invention relates to an automatic detection and correction system for cylindrical workpiece circular runout, which comprises a frame platform, a lifting device, a sliding table mechanism, a clamping rotating mechanism and a correction mechanism, wherein the sliding table mechanism is arranged at two ends of the frame platform, the lifting device is arranged in the middle of the frame platform, the clamping rotating mechanism and the correction mechanism are arranged on the sliding table mechanism, the end part of a cylindrical workpiece is fixed through the clamping rotating mechanism at the corresponding side, the cylindrical workpiece is driven to rotate through the clamping rotating mechanism, the correction mechanism comprises a correction base, a pressure head and a lifting driving assembly, a detection sensor is arranged in the correction base, and the pressure head is arranged above the detection sensor and is driven to lift through the lifting driving assembly arranged on the correction base. The invention can realize automatic detection and automatic correction of the circular runout of the columnar workpiece, improves the working efficiency, and saves the time and the labor cost.

Description

An automatic detection and correction system for cylindrical workpiece circular runout

technical field

The invention relates to the field of workpiece detection, in particular to an automatic detection and correction system for circular runout of cylindrical workpieces.

Background technique

For cylindrical (cylindrical, polyhedral) workpieces, the circular runout of the peripheral surface is an important indicator of the workpiece. In the current production and assembly process of parts, when the circular runout of the workpiece exceeds the specified tolerance range, usually use Pressing heavy objects or directly using an iron hammer (rubber hammer) for correction is relatively rough, and the correction result cannot be obtained in real time, and the correction is performed based on the experience of the workers, while the conventional circular runout detection and correction devices in the prior art exist Poor real-time performance, unknown correction results, high unreliability, and high labor intensity for workers are not suitable for automated production operations.

Contents of the invention

The object of the present invention is to provide an automatic detection and correction system for circular runout of cylindrical workpieces, which can realize automatic detection and automatic correction of circular runout of cylindrical workpieces, improve work efficiency, and save time and labor costs.

The purpose of the present invention is achieved through the following technical solutions:

An automatic detection and correction system for circular runout of a columnar workpiece, comprising a frame platform, a lifting device, a slide mechanism, a clamping and rotating mechanism, and a correction mechanism. Lifting device, the sliding table mechanism is provided with a clamping rotation mechanism and a correction mechanism, the end of the columnar workpiece is fixed by the clamping rotation mechanism on the corresponding side, and the columnar workpiece is driven to rotate by the clamping rotation mechanism, and the correction mechanism It includes a rectification base, a pressure head and a lifting drive assembly. A detection sensor is arranged in the correction base. .

The sliding table mechanism includes a mobile sliding table, a rack, a driving gear and a mobile driving assembly, wherein the mobile sliding table is slidably connected to the rack platform, and the upper side of the rack platform is provided with a rack, a driving gear and a mobile driving assembly Both are arranged on the moving sliding table, and the driving gear meshes with the rack and is driven to rotate by the moving driving assembly, and the clamping and rotating mechanism and the correction mechanism are both arranged on the moving sliding table.

The upper side of the frame platform is a marble table and is provided with slide rails, and the lower side of the mobile slide table is provided with moving sliders to cooperate with the corresponding slide rails respectively.

The clamping and rotating mechanism includes a rotating drive assembly, a rotating assembly and a chuck, wherein the rotating assembly includes a rotating shaft, and the front end of the rotating shaft is fixedly connected with the chuck and driven to rotate by the rotating driving assembly.

The rotation drive assembly includes a rotation drive device, a rotation drive gear and a rotation driven gear, wherein the output shaft of the rotation drive device is provided with a rotation drive gear, and the rotation shaft is provided with a rotation driven gear, and the rotation The driving gear meshes with the rotary driven gear.

The rotation driving device is installed on a rotation driving base, and the rotation driving base is installed on the moving slide table on the corresponding side.

The rotating assembly includes a rotating base, and the rotating base is provided with a first support plate and a second support plate, and the front part of the rotating shaft is supported and installed on the first support plate through a first bearing. The rear part of the rotating shaft is supported and installed on the second supporting plate through the second bearing, a partition is set between the first supporting plate and the second supporting plate to fit on the rotating shaft, and an end plate is arranged at the front end of the rotating shaft , and the chuck and the rotating driven gear are fixed on the end plate, and the rear end of the rotating shaft is provided with a retaining ring nut.

The lifting drive assembly of the correction mechanism includes a lift drive device, a transmission assembly and a lift seat, wherein the lift seat is arranged in the correction base, and the lift drive device and the transmission assembly are arranged on the upper side of the correction base, And the lifting seat is driven up and down by the lifting driving device, and the lifting driving device transmits torque through the transmission assembly. The lifting seat includes a horizontally arranged pressing plate and a vertically arranged guide connecting plate. On the lower side of the pressure plate, both sides of the guide connecting plate are slidingly connected with the correction base, and the lower side of the pressure head is V-shaped.

An installation stand is provided on the upper side of the correction base, and a screw is provided inside the installation stand, and a horizontal seat is provided on the upper end of the installation stand, and the lifting drive device is installed on one side of the horizontal seat , the said horizontal seat is provided with a driving gear and a driven gear meshing with each other, wherein the driving gear is mounted on the output shaft of the lifting drive device, the driven gear is mounted on the upper end of the screw, and the screw A screw nut is set on the rod, and the lower side of the screw nut is connected with the lifting seat through a sleeve, and the lower end of the lead screw is inserted into the sleeve.

Both sides of the correction base are equipped with lifting slide rails, the middle part of the guide connecting plate is fixedly connected with the pressure plate, and lifting slide blocks are provided on both sides to cooperate with the lifting slide rails on the corresponding side.

Advantage of the present invention and positive effect are:

1. The present invention realizes the complete process operation of automatic detection of circular runout and automatic correction of cylindrical workpieces. Compared with manual correction and simple equipment correction, the system can realize the closed-loop operation of measurement, correction and re-measurement, which greatly improves the work efficiency. Efficiency to meet the requirements of automated production.

2. The present invention can completely liberate the operating workers, and can also avoid redundant work caused by simple correction, saving time and reducing labor costs.

Description of drawings

Fig. 1 is a structural representation of the present invention,

Fig. 2 is a schematic structural diagram of the slide mechanism in Fig. 1,

Fig. 3 is a schematic structural diagram of the clamping and rotating mechanism in Fig. 1,

Fig. 4 is a sectional view of the clamping and rotating mechanism in Fig. 3,

Fig. 5 is a three-dimensional schematic view of the correction mechanism in Fig. 1,

Fig. 6 is another perspective schematic view of the correction mechanism in Fig. 5,

Fig. 7 is a schematic diagram of the working state of the clamping rotation mechanism and the correction mechanism in Fig. 1,

Fig. 8 is a schematic diagram of cooperation between the indenter and the cylindrical workpiece in Fig. 7 .

Among them, 1 is the frame platform, 2 is the lifting device, 3 is the clamping and rotating mechanism, 301 is the rotation driving base, 302 is the rotation driving device, 303 is the rotation driving gear, 304 is the rotation driven gear, 305 is the chuck , 306 is a rotating assembly, 3061 is a rotating shaft, 3062 is a rotating base, 3063 is a first bearing, 3064 is a second bearing, 3065 is a partition, 3066 is an end plate, 3067 is a retaining ring nut, 4 is a slide mechanism, 401 is a mobile slide, 402 is a hand wheel, 403 is a slide rail, 404 is a rack, 405 is a driving gear, 406 is a right-angle reducer, 5 is a correction mechanism, 501 is a correction base, 502 is a pressure head, and 503 is a Lifting driving device, 504 is to install the stand, 505 is the lifting slider, 506 is the lifting slide rail, 507 is the lifting seat, 5071 is the guide connecting plate, 5072 is the pressing plate, 6 is the detection sensor, and 7 is the columnar workpiece.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Figures 1 to 8, the present invention includes a frame platform 1, a lifting device 2, a slide mechanism 4, a clamping and rotating mechanism 3 and a correction mechanism 5, wherein both ends of the frame platform 1 are provided with a slide mechanism 4, The middle part of the frame platform 1 is provided with a lifting device 2, and the slide mechanism 4 is provided with a clamping and rotating mechanism 3 and a straightening mechanism 5, wherein the end of the columnar workpiece 7 is fixed by the clamping and rotating mechanism 3 on the corresponding side, and the columnar workpiece 7 Driven and rotated by the clamping and rotating mechanism 3, as shown in Figures 5-7, the correction mechanism 5 includes a correction base 501, a pressure head 502 and a lifting drive assembly, and a detection sensor is provided in the correction base 501 6. The indenter 502 is set above the detection sensor 6 and driven up and down by the lifting drive assembly set on the correction base 501 . When the present invention works, the columnar workpiece 7 is driven to rotate by the clamping and rotating mechanism 3, and the detection sensor 6 can measure the distance between the columnar workpiece 7, such as the columnar workpiece 7 rotates 360°, and the set distance sampling angle is 0.5°. Then the detection sensor 6 can collect 360 °/0.5 °=720 data, and the equipment system can obtain the data maximum value Dmax and the data minimum value Dmin according to the program operation, then the circular runout value=Dmax−Dmin, when the columnar workpiece 7 When the circular runout value obtained at an angular position exceeds the set range, the clamping and rotating mechanism 3 drives the cylindrical workpiece 7 to rotate to the angular position, and then the equipment system controls the lifting drive assembly in the correcting mechanism 5 to start driving the pressure head 502 to descend against it. The end of the columnar workpiece 7 is pressed down to realize the correction of the columnar workpiece 7 . In this embodiment, the detection sensor 6 is a laser sensor, which is a well-known technology in the art and is a commercially available product.

As shown in Figure 2, the sliding table mechanism 4 includes a moving sliding table 401, a rack 404, a driving gear 405 and a moving driving assembly, wherein the moving sliding table 401 is slidingly connected with the rack platform 1, and in this embodiment, the The upper side of the frame platform 1 is a marble countertop and is provided with a slide rail 403 and a rack 404. The lower side of the mobile slide table 401 is provided with a movable slider to cooperate with the corresponding slide rail 403 to realize sliding connection. The marble countertop is flat. , which can ensure the detection accuracy to the greatest extent, the driving gear 405 and the mobile driving assembly are both arranged on the moving slide table 401, and the driving gear 405 meshes with the rack 404 and is driven to rotate by the moving driving assembly. The driving gear 405 rotates and moves along the rack 404 , thereby driving the entire moving slide 401 to move. The clamping and rotating mechanism 3 and the correction mechanism 5 are both arranged on the moving slide 401 .

As shown in Figure 2, in this embodiment, the mobile drive assembly includes a handwheel 402 and a right-angle reducer 406, wherein the handwheel 402 is fixedly connected to the input shaft of the right-angle reducer 406, and the right-angle reducer 406 The output shaft is fixedly connected with the driving gear 405, and the right-angle reducer 406 is a well-known technology in the art and a commercially available product. When the mechanism is working, the operator can turn the hand wheel 402 according to the length of the columnar workpiece 7, etc., to realize the moving slide 401 on both sides to move and fix the workpiece. In addition, the present invention can also use a servo geared motor as a driving device according to actual needs to realize automatic driving. The purpose of the movement of the sliding table 401 is that the driving gear 405 is installed on the output shaft of the servo reduction motor.

As shown in Figures 3-4, the clamping and rotating mechanism 3 includes a rotating drive assembly, a rotating assembly 306 and a chuck 305, wherein the rotating assembly 306 includes a rotating shaft 3061, and the front end of the rotating shaft 3061 is connected to the chuck 305 It is fixedly connected and driven to rotate by the rotary drive assembly. The chuck 305 is a well-known technology in the art, and this embodiment adopts a three-jaw chuck structure.

As shown in FIGS. 3-4 , in this embodiment, the rotary drive assembly includes a rotary drive device 302 , a rotary drive gear 303 and a rotary driven gear 304 , wherein the rotary drive device 302 is installed on a rotary drive base 301 Above, the rotation driving base 301 is installed on the corresponding side of the moving slide 401, the output shaft of the rotation driving device 302 is provided with a rotation driving gear 303, and the rotation shaft 3061 is provided with a rotation driven gear 304, And the rotating driving gear 303 meshes with the rotating driven gear 304 . In this embodiment, the rotary drive device 302 adopts a deceleration servo motor, and when the columnar workpiece 7 rotates, the equipment system controls the rotary drive devices 302 on both sides to rotate synchronously.

As shown in Figures 3-4, in this embodiment, the rotating assembly includes a rotating base 3062, and the rotating base 3062 is provided with a first support plate and a second support plate, and the front part of the rotating shaft 3061 passes through The first bearing 3063 is supported and installed on the first support plate, and the rear part of the rotating shaft 3061 is supported and installed on the second support plate through the second bearing 3064, between the first support plate and the second support plate A partition 3065 is set on the rotating shaft 3061, the front end of the rotating shaft 3061 is provided with an end plate 3066, and the chuck 305 and the rotating driven gear 304 are fixed on the end plate 3066, and the rotating shaft 3061 A retaining ring nut 3067 is provided at the rear end to limit the axial position of the rotating shaft 3061 , and the two bearings are tapered roller bearings and are compressed by the retaining ring nut 3067 .

As shown in Figures 5 to 7, the lifting drive assembly of the correction mechanism 5 includes a lifting drive device 503, a transmission assembly and a lifting seat 507, wherein the lifting seat 507 is arranged in the correction base 501, and the lifting drive device 503 and the transmission assembly are all arranged on the upper side of the correction base 501, and the lifting seat 507 is driven up and down by the lifting drive device 503, and the lifting drive device 503 transmits torque through the transmission assembly, and the lifting seat 507 It includes a horizontally arranged pressing plate 5072 and a vertically arranged guiding connecting plate 5071, the pressing head 502 is installed on the lower side of the pressing plate 5072, and both sides of the guiding connecting plate 5071 are slidingly connected with the correction base 501. In an example, both sides of the correction base 501 are provided with lifting slide rails 506, the middle part of the guide connecting plate 5071 is fixedly connected with the pressure plate 5072, and the two sides are provided with lifting slide blocks 505 respectively connected with the lifting slide rails on the corresponding side. 506 cooperate to realize sliding connection. In addition, in this embodiment, the transmission assembly adopts a T-shaped screw nut structure, wherein the upper side of the correction base 501 is provided with a mounting stand 504, and a screw is arranged inside the mounting stand 504, and the mounting stand 504 is provided with a screw. A horizontal seat is provided on the upper end of the stand 504, and the lifting drive device 503 is installed on one side of the horizontal seat, and a driving gear and a driven gear that mesh with each other are arranged in the horizontal seat, wherein the driving gear is installed on the lifting drive On the output shaft of the device 503, the driven gear is installed on the upper end of the lead screw, the screw nut is set on the screw nut, and the lower side of the screw nut is connected with the lifting seat 507 through a sleeve, so that The lower end of the lead screw is inserted into the sleeve, which will not affect the rotation of the lead screw and the lifting of the sleeve. When the mechanism is working, the lifting drive device 503 drives the screw to rotate through the driving gear and the driven gear to transmit torque, and then drives the screw nut to drive the lifting seat 507 to move up and down, and the lifting slider 505 cooperates with the lifting slide rail 506 to ensure smooth lifting of the lifting seat 507 on the one hand, and to ensure the support of the pressing plate 5072 on the other hand, thereby ensuring that the pressure head 502 is fully stressed. As shown in Figure 8, in this embodiment, the indenter 502 adopts a V-shaped structure, so that when the indenter 502 contacts the upper side of the columnar workpiece 7, it can realize line contact on the left and right sides, ensuring that the workpiece does not move downward. Horizontal offset left and right, the lifting drive device 503 can use devices such as servo motors.

As shown in Figure 1, in this embodiment, the lifting device 2 in the middle of the rack platform 1 adopts a screw lift driven by a servo motor, and the upper end of the screw lift is provided with a support seat for placing a columnar workpiece 7, and the screw lift It is a well-known technology in the art and is a commercially available product.

Working principle of the present invention is:

When the present invention works, the columnar workpiece 7 is first placed on the support seat of the middle lifting device 2, and the lifting device 2 adjusts the height of the columnar workpiece 7 according to the position of the central axis of the clamping and rotating mechanism 3 on both sides, and then the height of the columnar workpiece 7 on both sides The sliding table mechanism 4 is started to make the mobile sliding table 401 drive the clamping and rotating mechanism 3 to move to the middle, and use the claws on the chuck 305 to fix the two ends of the columnar workpiece 7, and then clamp the rotating drive device in the rotating mechanism 3 302 starts to make the columnar workpiece 7 rotate around its own axis. During the rotation of the columnar workpiece 7, the detection sensor 6 collects a plurality of distance data from the columnar workpiece 7 according to the sampling angle set by the equipment system, and then the equipment system according to the program The operation can obtain the data maximum value Dmax and the data minimum value Dmin, then the circular runout value=Dmax-Dmin, such as the detection requirement of one end of the columnar workpiece 7 is 0.5mm for jumping, and the data detected by the detection sensor 6 (only 10 data are listed here , as an example) as shown in the table below:

serial number Angular position/° Detection distance/mm 1 0 10.00 2 30 10.01 3 60 10.05 4 90 10.35 5 120 10.61 6 150 10.44 7 180 10.33 8 210 10.29 9 240 10.15 10 270 10.08 11 300 10.01 12 330 9.98

It can be seen from the above table that the maximum value obtained by the detection sensor 6 is the detection distance at the position of 120°: 10.61mm, and the minimum value obtained by the detection sensor 6 is the detection distance at the position of 330°: 9.98mm. According to the calculation principle of the above-mentioned circular runout value, the workpiece The circular runout value at the 120° position is 10.61-9.98=0.63mm, 0.63mm>0.50mm, which means that the circular runout is out of tolerance and needs to be corrected. At this time, the clamping and rotating mechanism 3 drives the cylindrical workpiece 7 to rotate to the 120° position , and then the correcting mechanism 5 on the corresponding side starts to use the indenter 502 to correct the columnar workpiece 7. After the correction is completed, the clamping and rotating mechanism 3 rotates the workpiece again, and the circular runout data is detected again by the detection sensor 6. If there is still more than the specified The circular runout value of the range, then repeat the above process to correct again, until the circular runout error of the columnar workpiece 7 is corrected within the specified range.

Claims (10)

1. A columnar workpiece circle runout automatic detection and correction system is characterized in that: including frame platform (1), elevating gear (2), slip table mechanism (4), centre gripping rotary mechanism (3) and correction mechanism (5), wherein frame platform (1) both ends all are equipped with slip table mechanism (4), and frame platform (1) middle part is equipped with elevating gear (2), be equipped with centre gripping rotary mechanism (3) and correction mechanism (5) on slip table mechanism (4), columnar workpiece (7) tip is fixed through centre gripping rotary mechanism (3) of corresponding side to columnar workpiece (7) pass through centre gripping rotary mechanism (3) drive rotation, correction mechanism (5) are including correction base (501), pressure head (502) and lift drive assembly, be equipped with in correction base (501) and detect sensor (6), pressure head (502) are located detect sensor (6) top and through locating lift drive assembly drive on correction base (501) goes up and down.

2. The columnar workpiece circle runout automatic detection and correction system according to claim 1, wherein: slip table mechanism (4) are including removing slip table (401), rack (404), drive gear (405) and removal drive assembly, wherein remove slip table (401) and frame platform (1) sliding connection, and frame platform (1) upside is equipped with rack (404), drive gear (405) and removal drive assembly all locate remove on slip table (401), just drive gear (405) with rack (404) meshing and through remove drive assembly drive rotation, centre gripping rotary mechanism (3) and correction mechanism (5) all are located remove on slip table (401).

3. The columnar workpiece circle runout automatic detection and correction system according to claim 2, wherein: the marble machine is characterized in that the upper side of the frame platform (1) is a marble table top and is provided with slide rails (403), and the lower side of the movable sliding table (401) is provided with movable sliding blocks which are matched with the corresponding slide rails (403) respectively.

4. The columnar workpiece circle runout automatic detection and correction system according to claim 1, wherein: the clamping and rotating mechanism (3) comprises a rotary driving assembly, a rotary assembly (306) and a chuck (305), wherein the rotary assembly (306) comprises a rotating shaft (3061), and the front end of the rotating shaft (3061) is fixedly connected with the chuck (305) and is driven to rotate by the rotary driving assembly.

5. The columnar work piece circle runout automatic detection and correction system according to claim 4, wherein: the rotary driving assembly comprises a rotary driving device (302), a rotary driving gear (303) and a rotary driven gear (304), wherein the rotary driving gear (303) is arranged on an output shaft of the rotary driving device (302), the rotary driven gear (304) is arranged on the rotary shaft (3061), and the rotary driving gear (303) is meshed with the rotary driven gear (304).

6. The columnar work piece circle runout automatic detection and correction system according to claim 5, wherein: the rotary driving device (302) is mounted on one rotary driving base (301), and the rotary driving base (301) is mounted on a movable sliding table (401) on the corresponding side.

7. The columnar work piece circle runout automatic detection and correction system according to claim 4, wherein: the rotary assembly comprises a rotary base (3062), a first supporting plate and a second supporting plate are arranged on the rotary base (3062), the front portion of a rotary shaft (3061) is supported and installed on the first supporting plate through a first bearing (3063), the rear portion of the rotary shaft (3061) is supported and installed on the second supporting plate through a second bearing (3064), a partition plate (3065) is arranged between the first supporting plate and the second supporting plate and sleeved on the rotary shaft (3061), an end plate (3066) is arranged at the front end of the rotary shaft (3061), the chuck (305) and a rotary driven gear (304) are both fixed on the end plate (3066), and a check ring nut (3067) is arranged at the rear end of the rotary shaft (3061).

8. The columnar workpiece circle runout automatic detection and correction system according to claim 1, wherein: the lifting drive assembly of the correction mechanism (5) comprises a lifting drive device (503), a transmission assembly and a lifting seat (507), wherein the lifting seat (507) is arranged in the correction base (501), the lifting drive device (503) and the transmission assembly are arranged on the upper side of the correction base (501), the lifting seat (507) is driven to lift by the lifting drive device (503), the lifting drive device (503) transmits torque through the transmission assembly, the lifting seat (507) comprises a pressing plate (5072) which is horizontally arranged and a guide connecting plate (5071) which is vertically arranged, the pressing head (502) is arranged on the lower side of the pressing plate (5072), two sides of the guide connecting plate (5071) are in sliding connection with the correction base (501), and the lower side of the pressing head (502) is in a V shape.

9. The columnar work piece circle runout automatic detection and correction system according to claim 8, wherein: the correction base (501) upside is equipped with an installation seat (504), just be equipped with the lead screw in installation seat (504), installation seat (504) upper end is equipped with a horizontal seat, just lift drive (503) install in horizontal seat one side, be equipped with intermeshing's driving gear and driven gear in the horizontal seat, wherein the driving gear install in on the output shaft of lift drive (503), driven gear install in the lead screw upper end, the cover is equipped with the screw on the lead screw, just the screw downside through a sleeve pipe with lift seat (507) are connected, the lead screw lower extreme cartridge in the sleeve pipe.

10. The columnar work piece circle runout automatic detection and correction system according to claim 8, wherein: lifting slide rails (506) are arranged on two sides of the correction base (501), the middle of the guide connecting plate (5071) is fixedly connected with the pressing plate (5072), and lifting slide blocks (505) are arranged on two sides of the guide connecting plate and are respectively matched with the lifting slide rails (506) on the corresponding sides.

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