阅读说明：本技术 一种t型导轨轨头倒平角用刨床对中装置及方法 (Planer centering device and method for T-shaped guide rail head chamfer angle ) 是由 庄卫东 黄涤 张凯 刘香松 于 2021-07-27 设计创作，主要内容包括：本发明涉及电梯导轨加工技术领域,尤其涉及一种T型导轨轨头倒平角用刨床对中装置及方法,该装置包括：机壳,机壳固定在龙门刨床行进方向的前端；对中刀杆,两对中刀杆在机壳内在水平方向可移动设置,且两对中刀杆的底部凸出于机壳底端；两液压缸,固定在机壳两侧面,且与靠近其侧的对中刀杆连接,用于分别驱动两对中刀杆在水平方向上的移动；辊轮,转动连接在两对中刀杆的底部；其中,两辊轮与T型导轨的侧壁滚动接触,液压缸的进出油口处还连接有压力传感器,用于检测辊轮与T型导轨侧壁的压力,机壳上还固定有与压力传感器以及液压缸连接的控制器,当检测到一侧压力增大时,控制器控制该侧的液压缸增大压力,以将T型导轨弯曲的部位矫直。(The invention relates to the technical field of elevator guide rail processing, in particular to a planer centering device and a planer centering method for T-shaped guide rail head chamfer angles, wherein the device comprises the following components: the shell is fixed at the front end of the advancing direction of the double housing planer; the centering cutter bars are movably arranged in the horizontal direction in the machine shell, and the bottoms of the centering cutter bars protrude out of the bottom end of the machine shell; the two hydraulic cylinders are fixed on two side surfaces of the shell, connected with the centering cutter bars close to the side surfaces of the shell and used for respectively driving the two centering cutter bars to move in the horizontal direction; the roller is rotationally connected to the bottoms of the two centering cutter bars; the two rollers are in rolling contact with the side wall of the T-shaped guide rail, the oil inlet and the oil outlet of the hydraulic cylinder are further connected with a pressure sensor for detecting the pressure of the rollers and the side wall of the T-shaped guide rail, the shell is further fixedly provided with a controller connected with the pressure sensor and the hydraulic cylinder, and when the pressure of one side is detected to be increased, the controller controls the hydraulic cylinder of the side to increase the pressure so as to straighten the bent part of the T-shaped guide rail.)

1. The utility model provides a T type guide rail railhead for flat angle planer centering device which characterized in that includes:

the shell is fixed at the front end of the advancing direction of the gantry planer;

the centering cutter bars are movably arranged in the shell in the horizontal direction, and the bottoms of the centering cutter bars protrude out of the bottom end of the shell;

the two hydraulic cylinders are fixed on the two side surfaces of the shell, connected with the centering cutter bars close to the side surfaces of the shell and used for respectively driving the two centering cutter bars to move in the horizontal direction;

the roller is rotationally connected to the bottoms of the two centering cutter rods;

the rolling device comprises a casing, a T-shaped guide rail, a roller wheel, a hydraulic cylinder, a shell, a controller and a controller, wherein the roller wheel is in rolling contact with the side wall of the T-shaped guide rail, the oil inlet and outlet of the hydraulic cylinder are further connected with a pressure sensor and used for detecting the pressure of the roller wheel and the side wall of the T-shaped guide rail, the controller is further fixed on the casing and connected with the pressure sensor and the hydraulic cylinder, and when the pressure of one side is detected to be increased, the controller controls the hydraulic cylinder of the side to increase the pressure so as to straighten the bent part of the T-shaped guide rail.

2. The planer centering device for T-shaped rail head chamfer angle of claim 1, wherein the bottom of the centering knife bar is further provided with a speed sensor towards the roller, and the speed sensor is connected with the controller and is used for detecting the speed fluctuation when the roller rolls on the side wall of the T-shaped rail.

3. The planer centering device for T-shaped guide rail head chamfer of claim 2, wherein the speed sensor is a non-contact laser speed sensor.

4. A T-rail head beveling apparatus as defined in claim 3 wherein when the controller detects a speed fluctuation on either speed sensor, the location at which the fluctuation occurs and the distance traveled when the fluctuation occurs are calculated.

5. The planer centering device for T-rail head beveling of claim 4 wherein the controller records the position where the speed sensor fluctuates and the position where the fluctuation is located, and drives the hydraulic cylinder on the pressure increase side to increase the pressure at the position where the speed fluctuates.

6. A T-shaped guide rail head chamfering method, which applies the T-shaped guide rail head chamfering planer centering device as claimed in any one of claims 1 to 5, and is characterized by comprising the following steps:

s10: fixing the T-shaped guide rail on the machine table;

s20: driving a hydraulic cylinder to enable the roller to be in contact with the side face of the T-shaped guide rail, wherein the pressures of the hydraulic cylinders on the two sides of the T-shaped guide rail are equal;

s30: driving the gantry planer to move along the length direction of the T-shaped guide rail, and monitoring whether the pressure on the pressure sensors on the two sides changes in the moving process;

s40: if the pressure change value is smaller than the threshold value, fixing the planer tool on the planer, and moving the planer tool back and forth until the rail head of the T-shaped guide rail is planed to the preset size;

s50: if the pressure variation value is larger than the set value, the pressure is increased at the position where the pressure value is increased, the bent part is straightened until the pressure variation value is smaller than the threshold value, and the step S40 is repeated.

7. The T-shaped guide rail head chamfering method according to claim 6, wherein in step S30, whether the rotation speed of the rollers fluctuates or not is synchronously monitored, and if the rotation speed of the rollers does not fluctuate, an alarm is given.

8. The T-type guide rail head chamfering method according to claim 6, wherein in step S50, if the roller rotation speed fluctuates while the pressure change of the pressure sensor is monitored, and the time period of the fluctuation overlaps with the time period of the pressure change of the pressure sensor exceeding the threshold, the position starting point of the speed fluctuation is calculated, and the hydraulic cylinder is driven to increase the pressure within the length of the speed fluctuation at the next reciprocation.

9. The T-shaped guide rail head chamfering method according to claim 8, wherein in step S50, when the hydraulic cylinder on one side is pressurized, the pressure of the hydraulic cylinder on the other side is kept constant, and when the hydraulic cylinder on the pressurized side simultaneously monitors the increase of the pressure, the hydraulic cylinder on the pressurized side is restored to the original position.

10. The T-shaped guide rail head chamfering method according to claim 8, wherein in step S50, when the simultaneous increase or decrease of the both-side pressure or the simultaneous increase or decrease of the rotation speed of the both-side rollers is detected, a quality defect warning is issued.

Technical Field

The invention relates to the technical field of elevator guide rail processing, in particular to a planer centering device and method for T-shaped guide rail head chamfer angles.

Background

The elevator guide rail is a safety rail for the elevator to run up and down in a hoistway, and the guide rail can bear the car, the impact force generated when the elevator is braked, the impact force generated when a safety tong is emergently braked and the like while playing a role in guiding; as shown in fig. 1, the T-shaped guide rail is a guide rail with a "T-shaped" cross section, the rollers of the car rotate on both sides and the rail head surface of the T-shaped guide rail to play a role in guiding, and the car rollers are often made of rubber materials, and are likely to crack and fail when contacting the T-shaped guide rail for a long time.

In the related art, in order to improve the problems, the material of the roller is improved, and the tetrafluoroethylene material is added into the original polyethylene material, so that the wear resistance and corrosion resistance of the roller are improved, and the friction factor is reduced; however, the inventor found that one of the reasons for the roller being prone to chap is the right angle between the rail head and the side surface, so that the damage to the roller can be reduced by planing the right angle, but the planing of the T-shaped rail requires high precision, and the yield of the T-shaped rail meeting the requirements after the machining is completed is low.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the planer centering device and method for the T-shaped guide rail head chamfer angle are provided, and machining precision and yield of the T-shaped guide rail with the chamfer angle are improved.

In order to achieve the purpose, the invention adopts the technical scheme that:

in one aspect, the present invention provides a planer centering device for T-shaped guide rail head chamfer angle, comprising:

the shell is fixed at the front end of the advancing direction of the gantry planer;

the centering cutter bars are movably arranged in the shell in the horizontal direction, and the bottoms of the centering cutter bars protrude out of the bottom end of the shell;

the two hydraulic cylinders are fixed on the two side surfaces of the shell, connected with the centering cutter bars close to the side surfaces of the shell and used for respectively driving the two centering cutter bars to move in the horizontal direction;

the roller is rotationally connected to the bottoms of the two centering cutter rods;

the rolling device comprises a casing, a T-shaped guide rail, a roller wheel, a hydraulic cylinder, a shell, a controller and a controller, wherein the roller wheel is in rolling contact with the side wall of the T-shaped guide rail, the oil inlet and outlet of the hydraulic cylinder are further connected with a pressure sensor and used for detecting the pressure of the roller wheel and the side wall of the T-shaped guide rail, the controller is further fixed on the casing and connected with the pressure sensor and the hydraulic cylinder, and when the pressure of one side is detected to be increased, the controller controls the hydraulic cylinder of the side to increase the pressure so as to straighten the bent part of the T-shaped guide rail.

Furthermore, the bottom of the centering cutter bar faces to the direction of the roller wheel, and the speed sensor is connected with the controller and used for detecting speed fluctuation of the roller wheel when the roller wheel rolls on the side wall of the T-shaped guide rail.

Further, the speed sensor is a non-contact laser speed measuring sensor.

Further, when the controller detects that the speed on any one of the speed sensors fluctuates, the position where the fluctuation occurs and the distance traveled when the fluctuation occurs are calculated.

Further, the controller records the position where the speed sensor fluctuates and the position where the fluctuation is present, and drives the hydraulic cylinder on the pressure increase side to increase the pressure at the position where the speed fluctuates.

On the other hand, the invention also provides a T-shaped guide rail head chamfering method, which applies the planer centering device for the T-shaped guide rail head chamfering and comprises the following steps:

s10: fixing the T-shaped guide rail on the machine table;

s20: driving a hydraulic cylinder to enable the roller to be in contact with the side face of the T-shaped guide rail, wherein the pressures of the hydraulic cylinders on the two sides of the T-shaped guide rail are equal;

s30: driving the gantry planer to move along the length direction of the T-shaped guide rail, and monitoring whether the pressure on the pressure sensors on the two sides changes in the moving process;

s40: if the pressure change value is smaller than the threshold value, fixing the planer tool on the planer, and moving the planer tool back and forth until the rail head of the T-shaped guide rail is planed to the preset size;

s50: if the pressure variation value is larger than the set value, the pressure is increased at the position where the pressure value is increased, the bent part is straightened until the pressure variation value is smaller than the threshold value, and the step S40 is repeated.

Further, in step S30, whether the rotational speed of the rollers fluctuates or not is synchronously monitored, and if the rotational speed of the rollers does not fluctuate, an alarm is issued.

Further, in step S50, if it is detected that the pressure of the pressure sensor changes and the rotational speed of the roller fluctuates, and the time period during which the fluctuation occurs overlaps with the time period during which the pressure of the pressure sensor changes and exceeds the threshold value, the start point of the position at which the speed fluctuates is calculated, and the hydraulic cylinder is driven to increase the pressure within the length of the speed fluctuation at the next reciprocation.

Further, in step S50, when the hydraulic cylinder on one side is pressurized, the pressure of the hydraulic cylinder on the other side is kept constant, and when the hydraulic cylinder on the other side simultaneously monitors that the pressure is increased, the hydraulic cylinder on the pressurized side is returned to the original position.

Further, in step S50, when it is detected that the both-side pressure is simultaneously increased or decreased, or the rotation speed of the both-side rollers is simultaneously detected to be increased or decreased, a quality defect warning is issued.

The invention has the beneficial effects that: according to the invention, the centering device is fixed on the double housing planer, and the T-shaped guide rail is leveled by the centering device before the corner is planed, so that the yield of the product is improved; and the automatic detection and straightening of the bent part are realized through the hydraulic cylinder and the pressure sensor arranged on the hydraulic cylinder, and compared with the prior art, the accuracy and the automation degree are improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a T-shaped guide rail and a car roller in the background art of the invention;

FIG. 2 is a schematic structural diagram of a T-shaped guide rail according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a planer centering device for chamfering a rail head of a T-shaped guide rail according to an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating steps of a T-shaped rail head chamfering method according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The planer centering device for T-shaped guide rail head chamfer angle shown in fig. 2 to 4 comprises a machine shell 10, a centering cutter bar 20, a hydraulic cylinder 30 and a roller 40, wherein:

as shown in fig. 3, the housing 10 is fixed at the front end in the traveling direction of the planer; by the arrangement, the T-shaped guide rail can be straightened before the rail head of the T-shaped guide rail is machined, and the subsequent straightening step is omitted;

the two pairs of middle cutter bars 20 are movably arranged in the machine shell 10 in the horizontal direction, and the bottoms of the two pairs of middle cutter bars 20 protrude out of the bottom end of the machine shell 10; in order to ensure the stability of the translation of the centering knife bar 20, in a preferred embodiment of the present invention, a transverse sliding rail cooperating with the centering knife bar 20 may be disposed in the casing 10, so as to improve the accuracy of the movement of the centering knife bar 20.

The two hydraulic cylinders 30 are fixed on two side surfaces of the machine shell 10, connected with the centering cutter bars 20 close to the side surfaces of the machine shell, and used for respectively driving the two centering cutter bars 20 to move in the horizontal direction; in the embodiment of the invention, the two hydraulic cylinders 30 respectively drive the two centering cutter bars 20, so that accurate control can be realized;

the roller 40 is rotatably connected to the bottoms of the two centering cutter bars 20, and the roller 40 is in contact with the side wall of the T-shaped guide rail on one hand and is used for transmitting the pressure of the hydraulic cylinder 30 on the other hand;

wherein, two rollers 40 and the lateral wall rolling contact of T type guide rail, the oil inlet and outlet department of pneumatic cylinder 30 still is connected with pressure sensor (not shown in the figure), is used for detecting the pressure of roller 40 and T type guide rail lateral wall, still is fixed with the controller that is connected with pressure sensor and pneumatic cylinder 30 on the casing 10, when detecting that one side pressure increases, the controller control this side pneumatic cylinder 30 increase pressure to straighten the crooked position of T type guide rail.

In the embodiment, the T-shaped guide rail is leveled by the centering device before the corner is planed by the centering device fixed on the gantry planer, so that the yield of products is improved; and the automatic detection and straightening of the bending part are realized through the hydraulic cylinder 30 and the pressure sensor arranged on the hydraulic cylinder 30, and compared with the prior art, the accuracy and the automation degree are improved.

Referring to fig. 4, the bottom of the centering knife bar 20 is further provided with a speed sensor 50 toward the roller 40, and the speed sensor 50 is connected to the controller for detecting the speed fluctuation of the roller 40 when rolling on the side wall of the T-shaped guide rail. The speed sensor 50 is a non-contact laser tachometer sensor. The rotating speed of the quasi wheel is measured through the laser speed measuring sensor, the speed sensor 50 is electrically connected with the controller, and the travelling distance of the roller 40 can be calculated; it should be noted that when the side wall of the T-shaped guide rail is bent in the length direction, the roller 40 rotates more in the same time, and the rotation speed fluctuates; the fluctuation of the rotating speed can be increased or decreased, if the contact surface of the roller 40 is concave outwards, the roller 40 can be lost in contact with the side wall, so that the rotating distance is reduced, and the rotating speed is reduced; because the planer mostly moves at a constant speed when processing the workpiece, when the rotating speed of the roller 40 changes, the speed can be easily detected; through running roller 40 rotational speed detection, compare with prior art, provide a new detection mode, reduced artificial participation, improved detection efficiency.

On the basis of the above embodiment, when the controller detects that the speed on any one of the speed sensors 50 fluctuates, the position where the fluctuation occurs and the distance traveled when the fluctuation occurs are calculated. Since the action of the hydraulic cylinder 30 is delayed when the T-shaped guide rail moves on the T-shaped guide rail for the first time, the controller records the bent part of the T-shaped guide rail, and the hydraulic cylinder 30 can be controlled to act when reaching the preset position when straightening for the next time, so that accurate straightening is realized.

Specifically, in straightening, the controller records the position where the speed sensor 50 fluctuates and the position where the fluctuation is present, and drives the hydraulic cylinder 30 on the pressure increase side to increase the pressure at the position where the speed fluctuates. Since the two ends of the T-shaped guide rail are fixed, the bent portion can be corrected by applying force in one direction, and the method for correction will be described in detail below.

The embodiment of the invention also provides a T-shaped guide rail head chamfering method, which applies the planer centering device for the T-shaped guide rail head chamfering angle, and as shown in fig. 5, comprises the following steps:

s10: fixing the T-shaped guide rail on the machine table;

s20: driving the hydraulic cylinders 30 to enable the rollers 40 to be in contact with the side faces of the T-shaped guide rail, wherein the pressures on the hydraulic cylinders 30 on the two sides of the T-shaped guide rail are equal; it should be noted that the pressure value is set in such a way that the roller 40 is in contact with the side wall of the T-shaped guide rail, and the roller 40 is attached to the side wall of the T-shaped guide rail to rotate when the planer is moved;

s30: driving the gantry planer to move along the length direction of the T-shaped guide rail, and monitoring whether the pressure on the pressure sensors on the two sides changes in the moving process;

s40: if the pressure change value is smaller than the threshold value, fixing the planer tool on the planer, and moving the planer tool back and forth until the rail head of the T-shaped guide rail is planed to the preset size;

s50: if the pressure variation value is larger than the set value, the pressure is increased at the position where the pressure value is increased, the bent part is straightened until the pressure variation value is smaller than the threshold value, and the step S40 is repeated.

In the above embodiment, the straightening of the T-shaped guide rail is realized through the cooperation of the pressure sensor, the controller and the hydraulic cylinder 30, the automation of the straightening is realized, and the angle is planed after the T-shaped guide rail is straightened.

On the basis of the above embodiment, in order to ensure the detection accuracy, in step S30, whether the rotation speed of the roller 40 fluctuates or not is synchronously monitored, and if the rotation speed of the roller 40 does not fluctuate, an alarm is given. If the roller 40 is jammed during the moving process, the pressure is also increased, in order to reduce the occurrence of the situation, in the embodiment of the present invention, the rotation speed of the roller 40 is also monitored, if the rotation speed of the roller 40 is not changed and the pressure is changed, it indicates that the roller 40 has a problem, the alarm at this time is the roller 40 problem alarm, and the maintenance personnel can solve the problem by maintaining or replacing the roller 40.

In the embodiment of the present invention, in step S50, if the rotation speed of the roller 40 fluctuates while the pressure of the pressure sensor is monitored to change, and the time period during which the fluctuation occurs overlaps with the time period during which the pressure of the pressure sensor changes over the threshold value, the starting point of the position at which the speed fluctuates is calculated, and the hydraulic cylinder 30 is driven to increase the pressure within the length of the speed fluctuation at the time of the next reciprocation. It should be noted here that the pressure and speed of the roller 40 are changed, which indicates that the T-shaped guide rail is bent in the width direction, and the starting point of the position is recorded to control the time point of the pressurization, thereby improving the straightening accuracy.

When straightening is carried out specifically, in order to ensure the straightening effect and avoid the problem of excessive correction, when the hydraulic cylinder 30 on one side is pressurized, the pressure of the hydraulic cylinder 30 on the other side is kept unchanged, and when the hydraulic cylinder 30 on the other side simultaneously monitors that the pressure is increased, the hydraulic cylinder 30 on the pressurized side is restored to the original position. When the pressure on the other side is increased, the T-shaped guide rail reaches the set straightness at the moment;

further, the pressure sensor and the roller 40 in the embodiment of the present invention may also detect a defect of the T-shaped rail itself, for example, when the wall thickness at a certain position is thicker or thinner, in step S50, when it is detected that the pressures on both sides are increased or decreased simultaneously, or when it is detected that the rotation speeds of the rollers 40 on both sides are increased or decreased simultaneously, a quality defect warning is issued. Meanwhile, if the thickness is increased, the wall thickness is larger than the standard wall thickness, and if the thickness is reduced, the wall thickness is smaller than the standard wall thickness; by the method, the straightening accuracy is guaranteed, and the yield of products is further improved.

It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.