CN116944285A - Straightening device and straightening method for long guide rail with complex section - Google Patents
Straightening device and straightening method for long guide rail with complex section Download PDFInfo
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- CN116944285A CN116944285A CN202310649070.9A CN202310649070A CN116944285A CN 116944285 A CN116944285 A CN 116944285A CN 202310649070 A CN202310649070 A CN 202310649070A CN 116944285 A CN116944285 A CN 116944285A
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 185
- 238000003825 pressing Methods 0.000 claims abstract description 101
- 238000001514 detection method Methods 0.000 claims abstract description 79
- 230000007306 turnover Effects 0.000 claims abstract description 42
- 239000000523 sample Substances 0.000 claims description 42
- 238000006073 displacement reaction Methods 0.000 claims description 12
- 238000009826 distribution Methods 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 2
- 230000009471 action Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 239000004579 marble Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000007723 transport mechanism Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/10—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts between rams and anvils or abutments
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/003—Positioning devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/14—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by turning devices, e.g. turn-tables
- B21D43/145—Turnover devices, i.e. by turning about a substantially horizontal axis
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The application relates to a straightening device for a long guide rail with a complex section, and belongs to the field of straightening. It includes the pressing mechanism: the pressing head capable of pressing downwards is arranged, and the maximum deflection position of the guide rail straightening surface on the pressing platform is subjected to pressing downwards straightening; conveying mechanism: conveying the guide rail to the pressing platform of the pressing mechanism; deflection detection mechanism: detecting deflection of a current correcting surface of the guide rail to obtain at least one maximum deflection position; a positioning mechanism: detecting the conveying distance of the guide rail on the conveying mechanism, and controlling the conveying mechanism to convey the guide rail according to the conveying distance so that the position with the maximum deflection is sequentially conveyed to the pressing platform; the turnover mechanism comprises: the guide rail is turned over so that a plurality of planes of the guide rail are turned upwards in sequence to serve as a straightening surface. The straightening device has compact integral structure and can realize automatic straightening of the long guide rail. The deflection detection and the pressing action are separated in the straightening process, so that the straightening precision can be effectively improved, the labor investment is reduced, and the labor intensity of workers is reduced.
Description
Technical Field
The application belongs to the field of straightening of linear guide rails, and particularly relates to a straightening device of a long guide rail.
Background
The alignment of the linear guide rail of most enterprises is generally manual alignment, the bending degree of the guide rail is measured by using a feeler gauge, then the pressure is provided by manually controlling a press machine, the alignment is carried out by empirically controlling the pressing quantity, the production mode has the defects of high manual labor intensity, dependence on the experience of workers on accuracy, and the alignment accuracy and the working efficiency cannot be ensured.
The patent document of Chinese patent No. 2015152032. X discloses full-automatic linear guide rail straightening equipment, which is characterized in that a pressure head moves to effectively improve efficiency, two-end overturning units can quickly realize overturning, but parallelism among all the lifting units cannot be ensured, and the device is suitable for straightening workpieces with moderate length and moderate weight.
The patent document of Chinese patent number 201811487737.5 discloses a full-automatic guide rail straightening machine, which is characterized in that the relative position accuracy of a pressing point and a supporting point of the device is ensured, fine adjustment of pressure can be realized, but the workpiece is required to be measured and marked and installed and adjusted by relying on manual work.
The patent document of Chinese patent number 201811137563.X discloses guide rail straightening equipment, which is characterized in that feeding, detection and pressing integrated actions can be completed, the efficiency is improved by synchronous detection in the conveying process, an automatic turning device is not arranged, and other surfaces need manual turning adjustment for straightening.
Disclosure of Invention
The technical problem to be solved by the application is to provide the straightening device for the long guide rail aiming at the prior art, so that the labor intensity of workers is reduced, and the straightening precision is improved.
The application solves the problems by adopting the following technical scheme: a straightening device for a long guide rail with a complex section, comprising: a pressing mechanism: the pressing head capable of pressing downwards is arranged, and the maximum deflection position of the guide rail straightening surface on the pressing platform is subjected to pressing downwards straightening; conveying mechanism: conveying the guide rail to the pressing platform of the pressing mechanism; deflection detection mechanism: detecting deflection of a current correcting surface of the guide rail to obtain at least one maximum deflection position; a positioning mechanism: detecting the conveying distance of the guide rail on the conveying mechanism, and controlling the conveying mechanism to convey the guide rail according to the conveying distance so that the position with the maximum deflection is sequentially conveyed to the pressing platform; the turnover mechanism comprises: the guide rail is turned over so that a plurality of planes of the guide rail are turned upwards in sequence to serve as a straightening surface.
As one of the preferable embodiments of the application, the pressing platform of the pressing mechanism is in butt joint with the conveying mechanism, a pair of guide blocks are arranged on the pressing platform, a guide rail inlet is formed between the two guide blocks, the conveying mechanism conveys the guide rail to the pressing platform, and the guide rail reaches the pressing platform through the guide rail inlet in a guiding way and can be just positioned at the pressing position.
As one of the preferred embodiments of the application, a detection platform is arranged on one side of the conveying mechanism, the deflection detection mechanism is arranged opposite to the detection platform, the guide rail is horizontally arranged on the detection platform, the deflection detection mechanism detects the deflection of the guide rail straightening surface opposite to the detection platform, and the detection platform can support the guide rail in a through-length manner, so that the deflection detection of the guide rail is prevented from being interfered by gravity factors.
As one of the preferred embodiments of the application, the deflection detection mechanism comprises a non-resistance pneumatic motion sliding block, a transverse plate, a first probe and a second probe, wherein the transverse plate is arranged on the non-resistance pneumatic motion sliding block, the transverse plate can move up and down, the first probe and the second probe are both arranged on the transverse plate, the non-resistance pneumatic motion sliding block hovers on the detection platform and can slide along the extending direction of the detection platform, when the guide rail is horizontally arranged on the detection platform, the first probe is used for measuring the distance between the first probe and the detection platform through length, and meanwhile, the second probe is used for measuring the distance between the second probe and the guide rail straightening surface, so that the through length deflection of the guide rail straightening surface relative to the detection platform is obtained.
As one of the preferred embodiments of the application, the deflection detection mechanism comprises a stepping motor and a ball screw guide rail, wherein the ball screw guide rail is vertically arranged and fixedly connected with the non-resistance pneumatic movement sliding block, a transverse plate is fixedly connected with the sliding block of the ball screw guide rail, and the stepping motor acts on the ball screw guide rail to control the vertical displacement of the transverse plate. The transverse plate can drive the first probe and the second probe to move up and down by up and down displacement, so that the height is adaptively adjusted.
As one of the preferred embodiments of the present application, the present application further comprises a pushing mechanism located at one side of the conveying mechanism, for pushing the guide rail between the detection platform and the conveying mechanism. The pushing mechanism may be a cylinder or the like, and pushes the guide rail by using the telescopic action of the telescopic shaft, and the front end of the telescopic shaft is preferably provided with a magnet for attracting the guide rail.
As one of the preferred embodiments of the application, the positioning means is arranged relative to the transport means, and a laser distance meter is used as a displacement sensor for measuring the initial position of the guide rail on the transport means and the displacement distance of the guide rail relative to the initial position. According to the method, the conveying progress of the conveying mechanism to the guide rail is controlled, and the maximum deflection position on the guide rail straightening surface is accurately controlled to reach the pressing position of the pressing platform one by one so as to realize accurate pressing and straightening.
As one of the preferred embodiments of the application, the turnover mechanism is arranged relative to the conveying mechanism and is used for turning the guide rail on the conveying mechanism so as to switch different alignment surfaces of the guide rail, the turnover mechanism comprises a connecting rod and a turnover crank, the connecting rod is driven (such as a cylinder is driven) to act on the turnover crank, the turnover crank is enabled to be turned and switched between a first limit state and a second limit state by taking the rotating shaft as the center, the guide rail is supported on the turnover crank, and the guide rail is synchronously turned and switched to the upper alignment surface during the switching of the first limit state and the second limit state.
As one of the preferred embodiments of the application, the turning crank has a first limit side and a first limit plane, and is turned overWhen the rotating crank is in the first limiting state, the first limiting side face blocks the outer side of the guide rail, and the moving position of the guide rail on the conveying mechanism is limited;the turnover crank is provided with a second limiting side face and a second limiting plane, when the turnover crank (31) is in the second limiting state, the second limiting side face blocks the outer side of the guide rail, when the guide rail is turned by the second limiting state, the second limiting side face and the second limiting plane support the guide rail together to realize turning, namely the turnover crank turns from the first limiting state to the second limiting state in an empty state, and when the turnover crank turns from the second limiting state to the first limiting state, the guide rail is driven to turn together.
As one of the preferred embodiments of the application, two conveying mechanisms are respectively arranged on the pressing mechanism, and the two conveying mechanisms respectively stagger and convey guide rails to the pressing platform, stagger and straighten, thereby improving the working efficiency.
The straightening method based on the straightening device for the long guide rail with the complex section comprises the following steps:
step one, deflection detection
The guide rail is horizontally arranged on the detection platform in a way that the straightening surface faces upwards, the distance between the first probe and the detection platform is measured by using the through length of the first probe, the distance between the second probe and the current straightening surface of the guide rail is measured by using the through length of the second probe, the deflection distribution of the straightening surface is obtained by measuring the difference value, curve coordinates are recorded and given, the deflection curve of the straightening surface of the guide rail is divided into k sections of straightening sections, the coordinates of the maximum deflection position of each section of straightening section of the curve are obtained, the abscissa represents the distance between the maximum deflection position of the k section of curve and the end point of the guide rail, the ordinate represents the deflection value corresponding to the maximum deflection position, the abscissa is used as a signal for controlling the displacement of the conveying mechanism, and the ordinate is used as a signal for controlling the downward pressing of the pressing mechanism;
step two, conveying guide rail of conveying mechanism
The pushing mechanism is electrified to push the guide rail to the conveying mechanism by the detection platform, at the moment, the overturning crank of the overturning mechanism overturns to a first limit state, the first limit side faces block the side edges of the guide rail, and the position of the guide rail at the moment is detected by the position measuring device and is used as the initial position of the guide rail on the conveying mechanism;
step three, fixed-point conveying of guide rails
The conveying mechanism conveys the guide rail to the pressing mechanism, the straightening sections are sequentially conveyed to the pressing platform, the abscissa corresponding to the deflection maximum position of each straightening section in the deflection curve is used as a judging signal, when the distance, detected by the positioning device, of the guide rail from the initial position reaches the judging signal, the guide rail stops moving, and at the moment, the deflection maximum position of the current straightening section of the guide rail just reaches the pressing position of the pressing mechanism;
step four, straightening the guide rail
When the conveying mechanism is stopped each time, after the pressing mechanism obtains the value of the ordinate corresponding to the position with the maximum current deflection, determining the alignment pressure applied to the guide rail by the pressing mechanism through the total alignment deflection and alignment pressure theoretical model, and starting to press the guide rail by the pressing mechanism according to the alignment pressure;
step five, repeating the step three and the step four until the pressurization of all the straightening sections of the current straightening surface of the guide rail is completed;
step six, turning the guide rail
When the last straightening section of the guide rail is conveyed to the pressing platform, the guide rail is separated from the overturning mechanism and all moves to the conveying mechanism at the other side, the overturning crank of the overturning mechanism overturns from the first limiting state to the second limiting state, then the conveying mechanism reversely transfers the transfer guide rail to return along the conveying mechanism, when the position-finding mechanism detects that the guide rail returns to the initial position, the overturning mechanism overturns, the overturning crank overturns from the second limiting state to the first limiting state, meanwhile, the guide rail is driven to overturn, and a new straightening surface is switched;
step seven, pushing the turned guide rail to a detection platform by a pushing mechanism, wherein the new alignment surface of the guide rail faces upwards, and repeating the steps one to five to finish pressing the new alignment surface;
and step eight, repeating the steps six to seven to finish the pressing of all the alignment surfaces of the guide rail.
Compared with the prior art, the application has the advantages that: the automatic straightening machine is suitable for automatic straightening of long guide rails with complex cross sections, and the main body consists of a conveying mechanism, a deflection detection mechanism, a turnover mechanism, a pushing mechanism and a positioning mechanism, so that the automatic straightening machine is compact in integral structure and can realize automatic straightening of the long guide rails. The deflection detection and the pressing action are separated in the straightening process, so that the straightening precision can be effectively improved, the labor investment is reduced, and the labor intensity of workers is reduced.
Drawings
FIG. 1 is a schematic view of a calibrating device according to an embodiment of the present application;
FIG. 2 is a flow chart of the alignment of a single-sided rail in an embodiment of the present application;
FIG. 3 is a flow chart of the alignment of the left and right side rails in an embodiment of the present application;
FIG. 4 is a left side view of a calibration device according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a deflection detection mechanism according to an embodiment of the present application;
FIG. 6 is a second schematic diagram of a deflection detection mechanism according to an embodiment of the present application;
FIG. 7 is a schematic view of a positioning mechanism according to an embodiment of the present application;
FIG. 8 is a schematic view of a turnover mechanism according to an embodiment of the present application;
FIG. 9 is a schematic view of a tumble crank according to an embodiment of the application;
FIG. 10 is a working state diagram of the turnover mechanism in the left limit (first limit) in the embodiment of the application;
FIG. 11 is a state diagram of the tumble crank in the left limit according to the embodiment of the application;
fig. 12 is a working state diagram of the tilting mechanism in the right limit (second limit) in the embodiment of the application;
fig. 13 is a state diagram of the flip crank in the right limit in the embodiment of the present application.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings, which are exemplary and intended to be illustrative of the application and not to be construed as limiting the application. The text description in the embodiment corresponds to the drawings, the description related to the orientation is also based on the drawings, and the description is not to be construed as limiting the protection scope of the application.
In this embodiment, a guide rail having four sides is taken as an example, and the straightening device is described in detail, so that the straightness of the guide rail is effectively improved by pressing four sides (each 90 °) of the guide rail.
The straightening equipment for the long guide rail with the complex section comprises the following components: a pressing mechanism 1; the left side and the right side of the pressing mechanism 1 are symmetrically provided with a conveying mechanism, a deflection detection mechanism, a turnover mechanism, a pushing mechanism and a positioning mechanism respectively. The conveying mechanisms are a left conveying mechanism 2 and a right conveying mechanism 13 respectively; the deflection detection mechanism comprises a detection platform and a detection instrument, namely a left detection platform 3 and a left detection instrument 4; a right detection platform 12 and a right detection instrument 11; the turnover mechanism comprises two groups, namely a left turnover mechanism group 6 and a right turnover mechanism group 8; the pushing mechanism also comprises two groups, each group of four devices move together and are respectively a left pushing mechanism group 7 and a right pushing mechanism group 9; the positioning means are left 5 and right 10 positioning means, respectively.
Taking the left side as an example, the connection relation among different mechanisms is as follows: the left conveying mechanism 2 is welded with the bottom supporting part of the pressing mechanism 1, the left conveying mechanism 2 conveys the guide rail by a conveying roller way, the left turning mechanism 6 needs to ensure that the action track of the cylinder of the left turning mechanism does not interfere with the left conveying mechanism 2, and the left and right limiting requirement of the turning crank 31 is met. The pressing platform of the pressing device 1 is provided with a guide block for centering the guide rail, so that the guide rail can be just positioned at the pressing position after reaching the pressing platform. The left conveying mechanism 2 is welded with square steel which is supported at the bottom of the left detection platform 3, and the left detection platform 3 is positioned at one side of the left conveying mechanism 2, and the extending direction of the left detection platform is consistent with the conveying direction of a guide rail of the left conveying mechanism 2. The left pushing mechanism group 7 is welded with square steel at the bottom of the left conveying mechanism 2, the left pushing mechanism group 7 is positioned on the other side of the left conveying mechanism 2 and comprises four groups of pushing cylinders, and the front ends of the cylinders are provided with magnetic blocks for attracting the guide rails during pushing.
The structure of the mechanism is as follows: the arrangement of the pressing mechanism 1 on the left and right sides is uniform, and the left side will be described in detail below as an example.
The main structure of the left detecting instrument 4 (left deflection detecting mechanism): the stepper motor 14 is connected with the Oldham coupling 15 to transmit power to the ball screw guide rail 16, so that a sliding block on the ball screw guide rail 16 drives the transverse plate 19 to move up and down. The cross plate connector 18 is fixed to the cross plate 19 by the cross plate screw 17. The resistance-free pneumatic motion sliding block 20 selects KUNZ straightness measuring instrument series of Switzerland, the first probe 21 and the second probe 23 are connected with measuring software XPRO-K4, and the hexagonal head bolt 24 can screw or unscrew the probe seat 22 for adjusting the heights of the probes relative to the guide rail and the left detection platform 3. The probe mount 22 is secured to the cross plate connector 18 by a probe mount screw 25.
The left detecting instrument 4 is pneumatically suspended on the marble plate of the left detecting platform 3 by the non-resistance pneumatic motion sliding block 20, and the marble plate with a flat supporting surface is used as the detecting platform. Due to the limitation of the side edge of the left detection platform 3, the detection platform can only move along the length direction of the detection platform. The first probe 21 of the detecting instrument measures the distance to the upper surface of the guide rail, the second probe 23 measures the distance to the marble plate, and the actual bending deflection of the upper surface (straightening surface) of the guide rail is obtained through the difference value of the first probe and the second probe. On the marble plate with extremely high flatness, the bending caused by the gravity of the guide rail can be effectively avoided, the influence caused by the unevenness of the base can be effectively eliminated due to the distance measurement difference, and the detection accuracy is improved.
The main structure of the left positioning mechanism 5: the sensor adjusting frame 27 adjusts the laser range finder displacement sensor 26 to a proper height, and the supporting square steel 28 is welded on the outer side of the left conveying mechanism 2. The laser rangefinder displacement sensor 26 measures the transport distance of the rail on the left transport mechanism 2, which can be used as a determination of whether the rail is transported in place, thereby ensuring that the location of maximum deflection of each alignment section of the rail is stopped at the press-down of the press platform.
The basic principle of the left turning device group 6 is that a crank slide block is adopted, a cylinder 29 is used as an equivalent slide block to be a driving piece, a connecting rod 30 is connected with the cylinder 29 and a turning crank 31, a cushion block 32 guarantees eccentricity, and a supporting square steel 34 supports a bottom plate 33 to fix the positions of the cylinder and the cushion block 32. Since the crank block has a dead point position, the turning of the turning crank 31 needs to be restricted so as not to reach the dead point. Two pins are arranged, when the pins touch the bearing seat connecting screw, the turning crank 31 stops rotating, and the limiting function is realized. The space between the first limit side (X1) and the second limit side (X3) of the turning crank 31, which are turned to the left limit, must be greater than or equal to the space between the two guide blocks in the pressing mechanism 1. The supporting surface of the guide rail, which is supported by the first limiting plane (X2) of the left limit and the second limiting plane (X4) of the right limit, is lower than the roller outer ring of the left conveying mechanism 2, so that the guide rail is not interfered by the overturning crank 31 when the left conveying mechanism 2 is displaced, and can be overturned at a specific position.
Guide rail straightening method based on straightening device
On the left detection platform 3 on the left side, a guide rail a is placed, and four surfaces of the guide rail a are a1, a2, a3 and a4 respectively. On the right side of the right detection platform 12, a guide rail b is placed, and four surfaces are b1, b2, b3, b4, respectively.
Before starting, the deflection detection mechanism is adjusted, the first probe and the second probe are respectively adjusted to be fixed at proper positions, and detection of the guide rail straightening surface and the marble plane is facilitated.
And (5) measuring in a first step. The left detecting instrument 4 moves axially, the second probe 23 detects the whole length of the guide rail a, and the distance between the second probe 23 and the upper surface of the guide rail is obtained. The first probe 21 measures the distance from the measuring head to the marble plate, the deflection distribution of the upper surface of the guide rail is obtained through the difference value, the software records and endows curve coordinates, and the right detection instrument 11 detects the guide rail b1 in the same way. Dividing a deflection curve of the guide rail into k sections, wherein each section is as large as 200mm, obtaining coordinates of the maximum deflection position in each section of the curve, wherein the abscissa represents the distance from the point with the maximum deflection in the k section of the curve to the end point, and the ordinate represents the maximum deflection value. The abscissa is used as a signal for controlling the displacement of the conveying mechanism, and the ordinate is used as a signal for controlling the pressing down of the pressing mechanism 1
And a second step. After inspection, the left pushing mechanism group 7 is electrified, the electromagnet at the front end of the air cylinder attracts the guide rail to be pulled onto the roller way of the left conveying mechanism 2, the guide rail stops at the left limiting point of the left turning mechanism group 6, the side edge of the guide rail contacts with the first limiting side surface (X1) of the turning crank 31 in a plane mode, the left pushing mechanism group 7 is powered off, and the left positioning mechanism 5 measures the position of the guide rail at the moment and serves as the initial position of the guide rail.
And a third step. The left conveying mechanism 2 conveys the guide rail to the pressing platform of the pressing mechanism 1, the abscissa of the deflection maximum position measured by the left deflection detecting mechanism 4 is used as a judging signal, when the left positioning mechanism 5 measures that the guide rail is equal to the initial position, the guide rail stops moving, and at the moment, the deflection maximum position of the kth section of the guide rail a just stops at the pressing position of the pressing mechanism 1.
And fourthly, pressing. When the left conveying mechanism 2 stops each time, the pressure applying mechanism 1 obtains the value of the ordinate of the deflection maximum position, and then the size of the straightening pressure is determined through the existing theoretical model of the total straightening deflection and the straightening pressure. The pressing mechanism 1 starts pressing the guide rail.
And fifthly, backing. When the last straightening section of the guide rail is pressed, the overturning crank 31 of the left overturning mechanism group 6 overturns from the left limiting state to the right limiting state, and then the motor of the left conveying mechanism 2 is reversed, so that the guide rail returns along the original path of the left conveying mechanism 2 and is far away from the pressing mechanism 1.
And sixthly, turning. When the left positioning mechanism 5 detects that the guide rail returns to the initial position, the left turnover mechanism group 6 acts, the turnover crank 31 is turned from the right limit state to the left limit state, the turnover crank 31 rotates 90 degrees and drives the guide rail to turn over 90 degrees, and at the moment, the upward surface of the guide rail is changed from a1 to a2.
And seventh step movement. At this time, the left pushing mechanism group 7 is powered on and pushes the guide rail to move to the left detection platform 3, the steps one to five are repeated, and the alignment process of the new alignment surface a2 is started.
When rail a completes the fifth step, rail b begins to enter the alignment history for b1.
The specific straightening process of the left and right side guide rails is as follows: pressing a1 surface and measuring b1 surface; pressing the surface b1 and measuring the surface a 2; pressing a surface a2 and measuring a surface b 2; pressurizing the b2 surface and measuring the a3 surface; pressing a3 surface and measuring b3 surface; pressing the surface b3 and measuring the surface a 4; pressing a4 surface and measuring b4 surface; and b4, pressing, replacing the guide rail a, and replacing aa for aa1 measurement.
The above embodiment has the following features:
1. the embodiment presses the four surfaces of the guide rail, thereby effectively improving the straightness of the guide rail,
2. each surface of the guide rail to be straightened needs to be subjected to the straightening process, and the method comprises seven steps: measuring, moving, feeding, pressing, withdrawing, turning and moving.
3. In this embodiment, the two guide rails can be aligned from the left side and the right side at the same time, but only one guide rail is allowed to exist in the pressing area, and the guide rails on the left side and the right side are staggered to be aligned by pressing at the pressing mechanism 1. The guide rails a and b are correspondingly placed on the left detection platform and the right detection platform respectively at the beginning, and when the guide rail a is pressed, the guide rail b is detected and waited on the right detection platform; after the guide rail a leaves the pressing area and returns to the detection area, the guide rail b enters the pressing area.
4. The basic principle of the turnover mechanism is that a crank sliding block is utilized, the sliding block is used as a driving piece to drive a crank to rotate, so that 90-degree turnover of the guide rail is realized, and the alignment surface is automatically switched.
5. The overturning crank is preferably arranged in a zigzag shape, so that the overturning function is realized, and the guide rail is prevented from interfering with the overturning mechanism when moving left and right.
6. The turning crank is preferably provided with a limit to prevent the occurrence of a turning action dead point position, causing jamming.
7. The turnover mechanism is arranged opposite to the conveying mechanism and is placed below the roller way, so that space can be saved, and the turnover of the long guide rail can be realized.
8. The pushing mechanism adopts a mode of an air cylinder and an electromagnet, the electromagnet is pulled to the guide rail when being electrified, and the guide rail is pushed when not being electrified.
9. The deflection detection area and the pressing area are separated, and the guide rail is placed on the marble plate with high flatness during deflection detection, so that bending caused by gravity is overcome, and the alignment precision is improved.
10. The deflection detection adopts a double-probe mode, the guide rail and the detection platform are respectively measured, the deflection distribution of the guide rail is represented by the distance difference, and the error caused by uneven base is eliminated.
Claims (10)
1. The utility model provides a coalignment to long guide rail of complicated cross-section which characterized in that: comprising
Pressing mechanism (1): the pressing head capable of pressing downwards is arranged, and the maximum deflection position of the guide rail straightening surface on the pressing platform is subjected to pressing downwards straightening;
conveying mechanism (2): conveying the guide rail to the pressing platform of the pressing mechanism (1);
deflection detection mechanism (4): detecting deflection of a current correcting surface of the guide rail to obtain at least one maximum deflection position;
positioning means (5): detecting the conveying distance of the guide rail on the conveying mechanism (2), and controlling the conveying of the guide rail by the conveying mechanism so that the position with the maximum deflection is sequentially conveyed to the pressing platform;
turnover mechanism (6): the guide rail is turned over so that a plurality of planes of the guide rail are turned upwards in sequence to serve as a straightening surface.
2. The straightening device for a long guide rail with a complex section according to claim 1, characterized in that: the pressing platform of the pressing mechanism (1) is in butt joint with the conveying mechanism (2), a pair of guide blocks are arranged on the pressing platform, and a guide rail inlet is formed between the two guide blocks.
3. The straightening device for a long guide rail with a complex section according to claim 1, characterized in that: one side of the conveying mechanism (2) is provided with a detection platform (3), the deflection detection mechanism (4) is arranged opposite to the detection platform (3), the guide rail is horizontally arranged on the detection platform (3), and the deflection detection mechanism (4) detects the deflection of the guide rail straightening surface opposite to the detection platform (3).
4. A straightening device for long rails of complex cross section according to claim 3, characterized in that: the deflection detection mechanism (4) comprises a resistance-free pneumatic motion sliding block (20), a transverse plate (19), a first probe (21) and a second probe (23), wherein the transverse plate (19) is arranged on the resistance-free pneumatic motion sliding block (20), the transverse plate (19) can move up and down, the first probe (21) and the second probe (23) are both arranged on the transverse plate (18), the resistance-free pneumatic motion sliding block (20) hovers on the detection platform (3) and can slide along the extending direction of the detection platform, when a guide rail is horizontally arranged on the detection platform, the first probe (21) is used for measuring the distance between the first probe (21) and the detection platform (3) through length, and meanwhile, the second probe (23) is used for measuring the distance between the second probe (23) and a guide rail straightening surface, so that the through length of the guide rail deflection relative to the detection platform is obtained.
5. The straightening device for a long guide rail with a complex section according to claim 4, characterized in that: the deflection detection mechanism (4) comprises a stepping motor (14) and a ball screw guide rail (16), wherein the ball screw guide rail (16) is vertically arranged and fixedly connected with the non-resistance pneumatic movement sliding block (20), the transverse plate (19) is fixedly connected with the sliding block on the ball screw guide rail (16), and the stepping motor (14) acts on the ball screw guide rail (16) to control the up-and-down displacement of the transverse plate (19).
6. A straightening device for long rails of complex cross section according to claim 3, characterized in that: the device also comprises a pushing mechanism (7) which is positioned at one side of the conveying mechanism (2) and is used for pushing the guide rail between the detection platform (3) and the conveying mechanism (2).
7. The straightening device for a long guide rail with a complex section according to claim 1, characterized in that: the positioning mechanism (5) is arranged relative to the conveying mechanism (2), and a laser range finder is used as a displacement sensor for measuring the initial position of the guide rail on the conveying mechanism (2) and the displacement distance of the guide rail relative to the initial position.
8. The straightening device for a long guide rail with a complex section according to claim 1, characterized in that: the turnover mechanism (6) is arranged relative to the conveying mechanism (2) and is used for turning the guide rail on the conveying mechanism (2) to switch the straightening surface, the turnover mechanism (6) comprises a connecting rod (30) and a turnover crank (31), the connecting rod (30) is driven to act on the turnover crank (31), the turnover crank (31) is enabled to be turned and switched between a first limiting state and a second limiting state by taking the rotating shaft as the center, the guide rail is supported on the turnover crank (31), and the guide rail is synchronously turned and switched to realize the upward straightening surface when the first limiting state and the second limiting state are switched.
9. The straightening device for a long guide rail with a complex section according to claim 8, characterized in that: the turnover crank (31) is provided with a first limiting side surface and a first limiting plane, and when the turnover crank (31) is in the first limiting state, the first limiting side surface blocks the outer side of the guide rail to limit the moving position of the guide rail on the conveying mechanism; the overturning crank (31) is provided with a second limiting side face and a second limiting plane, and when the overturning crank (31) is in the second limiting state, the second limiting side face blocks the outer side of the guide rail, and the second limiting side face and the second limiting plane support the guide rail together to realize overturning.
10. A method of straightening a straightening device for a long guide rail of complex cross section according to any one of claims 1 to 9, characterized in that: comprising
Step one, deflection detection
The guide rail is horizontally arranged on the detection platform (3) in a way that the straightening surface faces upwards, the distance between the first probe (21) and the detection platform (3) is measured by using the through length of the first probe (21), the distance between the second probe (23) and the current straightening surface of the guide rail is measured by using the through length of the second probe (23), the deflection distribution of the straightening surface is obtained by measuring the difference value, a curve coordinate is recorded and given, the deflection curve of the straightening surface of the guide rail is divided into k sections of straightening sections, the coordinate of the maximum deflection position in each straightening section of the curve is obtained, the abscissa represents the distance between the maximum deflection position in the k section of curve and the end point of the guide rail, the ordinate represents the deflection value corresponding to the maximum deflection position, the abscissa is used as a signal for controlling the displacement of the conveying mechanism (2), and the ordinate is used as a signal for controlling the pressing down of the pressing mechanism (1);
step two, conveying guide rail of conveying mechanism
The pushing mechanism (7) is electrified to push the guide rail to the conveying mechanism (2), at the moment, the overturning crank (31) of the overturning mechanism (6) overturns to a first limit state, the side edge of the guide rail is blocked by the first limit side surface, and the position of the guide rail at the moment is detected by the positioning device (5) and is used as the initial position of the guide rail on the conveying mechanism (2);
step three, fixed-point conveying of guide rails
The conveying mechanism (2) conveys the guide rail to the pressing mechanism (1), the straightening sections are sequentially conveyed to the pressing platform, the abscissa corresponding to the deflection maximum position of each straightening section in a deflection curve is used as a judging signal, when the distance, detected by the positioning device (5), of the guide rail from the initial position reaches the judging signal, the guide rail stops moving, and at the moment, the deflection maximum position of the current straightening section of the guide rail just reaches the pressing position of the pressing mechanism (1);
step four, straightening the guide rail
When the conveying mechanism (2) is stopped each time, after the pressing mechanism (1) obtains a value of an ordinate corresponding to the position with the maximum deflection, determining the alignment pressure applied by the pressing mechanism (1) to the guide rail through the total alignment deflection and alignment pressure theoretical model, and starting to press the guide rail by the pressing mechanism (1) according to the alignment pressure;
step five, repeating the step three and the step four until the pressurization of all the straightening sections of the current straightening surface of the guide rail is completed;
step six, turning the guide rail
When the last straightening section of the guide rail is conveyed to the pressing platform, the guide rail is separated from the turnover mechanism (6), all the guide rail is moved to the conveying mechanism on the other side, the turnover crank (31) of the turnover mechanism (6) is turned over from the first limit state to the second limit state, then the conveying mechanism (2) is reversely operated to enable the guide rail to return along the conveying mechanism (2), when the positioning mechanism (5) detects that the guide rail returns to the initial position, the turnover mechanism (6) is turned over, the turnover crank (31) is turned over from the second limit state to the first limit state, and meanwhile, the guide rail is driven to turn over, and a new straightening surface is switched;
step seven, pushing the turned guide rail to the detection platform (3) by a pushing mechanism (7), enabling the new alignment surface of the guide rail to face upwards, and repeating the step one to the step five to finish pressing the new alignment surface;
and step eight, repeating the steps six to seven to finish the pressing of all the alignment surfaces of the guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310649070.9A CN116944285A (en) | 2023-06-02 | 2023-06-02 | Straightening device and straightening method for long guide rail with complex section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310649070.9A CN116944285A (en) | 2023-06-02 | 2023-06-02 | Straightening device and straightening method for long guide rail with complex section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116944285A true CN116944285A (en) | 2023-10-27 |
Family
ID=88441793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310649070.9A Pending CN116944285A (en) | 2023-06-02 | 2023-06-02 | Straightening device and straightening method for long guide rail with complex section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116944285A (en) |
-
2023
- 2023-06-02 CN CN202310649070.9A patent/CN116944285A/en active Pending
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