RU2236923C1 - Automatic machine tool for straightening discs of automobile wheels - Google Patents

Abstract

FIELD: machine engineering, namely equipment for automobile service centers, possibly for straightening discs of automobile wheels even in very small shops for maintenance works.

SUBSTANCE: all actuating mechanism are connected during operation with pickups, for example for testing geometry size of wheel disc. Said pickups are connected with machine tool control apparatus. Hydraulic cylinders are used for moving working table and carriages instead of manual motion of them. Control apparatus on base of data received from pickups performs in automatic mode technological process of straightening discs according to desired program set by operator of machine tool. In order to realize it, control apparatus is provided with industrial computer connected with interface device for controlling actuating mechanisms. Control apparatus of machine tool includes in addition program for automatically mounting wheel disc into working zone of machine tool for further straightening it and removing wheel disc out of machine tool after termination of straightening process. Machine tool includes in addition pickups for preliminarily detecting geometry size of wheel disc before straightening process and for further writing data related to geometry size of wheel disc in memory of control apparatus.

EFFECT: enhanced efficiency.

4 cl, 2 dwg

Description

The invention relates to the field of engineering, in particular to equipment for the field of car service, and can be used for dressing steel wheels of automobile wheels in an automated processing mode in the conditions of even the smallest car service workshop.

The well-known “Universal stand for dressing wheels” according to the description of the invention to the patent of the Russian Federation No. 2062153, IPC class 6 B 21 D 1/08, B 21 D 3/16, published in BI No. 17 06/20/1996 (1).

This stand is used for dressing by rolling rollers on the surfaces of the rims of the disks of automobile wheels of cars.

The stand contains roller correct devices and a device for securing and driving straightened wheels. The correct devices are equipped with groups of outer and inner rollers placed evenly relative to the circumference of the wheel rim.

The roller device is equipped with paired levers transmitting the dressing force, each pair of which is placed on different sides from the axis of symmetry of the rim and is fixed on the frame with one of its ends, and connected to the right rollers by the second ends. Rollers and twin levers can be located symmetrically with respect to the axis of the drive shaft.

The axes of the rollers and the beam are made with the possibility of limiting and adjusting movements relative to each other, and the beam along the axis of the drive shaft. The stand can be equipped with interchangeable rollers for dressing wheels having various shapes of the rim flange. Heated various sections of the wheel.

However, this stand has a number of significant drawbacks, namely:

1) low productivity, since all operations of installing a disk on the machine and in the working area of the machine for setting the required dimensions, processing (rolling in rollers) and removing the disk after processing are carried out manually by the operator;

2) the second drawback arises from the first during the running-in of the wheel disk, the operator repeatedly stops the machine drive to control the geometric dimensions of the disk during the dressing process;

3) during the operation of the machine, wear of the rubbing working surfaces of the actuators occurs, as a result of which a backlash appears, which leads to inaccurate processing of the wheel disk;

4) when installing the wheel disk on a machine of a different type and with different dimensions, it is necessary to practically reconfigure the operation of the executive mechanisms of the machine, which requires a time of 15-20 times more than the time to run-in and edit the wheel disk;

5) the installation of the wheel disk in the working area of the processing and removal from this zone after processing also takes a considerable time, two to three times longer than the time for running the wheel disk;

6) for editing complex deformations of a wheel disk, it is mandatory to first carry out preliminary editing with a disk deformation; and in this case, it is imperative to continuously monitor the size of the disk during the editing process itself. And this is impossible to implement on a well-known existing machine.

The aim in the development and creation of the proposed design of the machine is to significantly improve the control device and actuators of the machine and, on this basis, automate the labor-intensive processes performed by the machine operator in the process of dressing the wheel disc.

The specified technical result is achieved as follows. The proposed machine has the following improvements: in contrast to the known machine, all actuators are connected with sensors designed to control, for example, the geometric dimensions of the wheel disc, and the sensors are connected to the control device of the machine. Instead of manually moving the desktop and carriages, hydraulic cylinders are used.

At the same time, the control device, based on the information received from the sensors, carries out in an automated mode the technological process of straightening the wheel disk according to the appropriate program specified by the machine operator.

For the implementation of the technological process in an automated mode, the control device is equipped, for example, with an industrial computer with an interface device for controlling the actuators of the machine connected to it. In this case, the control device is configured to automatically install the wheel disk into the working area of the machine, subsequent dressing and removing the wheel drive from the machine after the dressing.

In addition, the proposed machine is equipped with sensors designed for preliminary measurement of the geometric dimensions of the wheel disc and subsequent input of information about these sizes into the control device before starting the editing process.

As a remote analogue of the proposed machine, you can take a stand for editing wheels of automobile wheels according to the source of scientific and technical information (1).

Figure 1 shows a diagram of the device of the proposed automated machine for dressing wheels of automobile wheels. Figure 2 shows a diagram of the device of the machine-analogue.

The proposed automated machine for editing wheels of automobile wheels consists of a control device 1, which is connected to the actuators 2 of the machine. In turn, the actuators 2 are connected to the sensors 3, which are connected to the control device 1 (figure 1).

As a control device 1, a microcontroller can be used, for example, at mega 128-16AI with a non-local display panel and an information input panel connected.

The control device 1 itself can be supplemented, for example, with an industrial computer model Wafer-5823 via a serial RS-232C interface connected to an AT mega 128-16AI microcontroller.

At the same time, a touch screen can be connected to this industrial computer, which is designed to display information about the parameters of the wheel disc dressing process, the current state of the machine control system, etc.

The user can use the touch panel to start the wheel disc dressing process according to a specified program, enter information on the geometric dimensions of the wheel disk, start the machine calibration program, update the database on the geometric dimensions of various types of wheel disks, etc.

As sensors 3 and 4, optical sensors of linear geometric dimensions, for example, carmar, can be used.

These sensors provide information about their (sensors) linear movement relative to the machine bed, depending on their location at a particular current time.

Entering information about the geometric dimensions of the wheel disk before it is processed by running the rollers in the memory of the control device 1 is carried out by moving the measuring rod of the machine, mechanically connected to the measuring head of the sensor 4.

As the actuator actuator 2, the proposed machine uses hydraulic cylinders, which, in turn, are controlled by electrohydro valves, and the latter are controlled via an interface module with an at mega 128-16AI microcontroller according to the corresponding program for a specific type of wheel disk.

The hydraulic cylinders of the machine are mechanically connected to the working table and two carriages mounted on the last obkatnyh rollers and provide reciprocating movement of obkatnyh rollers relative to the inner and outer surfaces of the rim of the wheel disk. And these movements are carried out according to a given program by the control device 1.

The control device 1 contains a program for the automated installation of the wheel disk in the working area of the machine, the subsequent processing and removal of the wheel disk from the machine after processing-editing.

The proposed machine also contains sensors 4, designed for preliminary measurement of the size of the wheel disk and the subsequent input of information about its geometric dimensions in the memory of the control device before starting the editing process (figure 1).

The proposed machine operates as follows. The operator, using the keyboard or touch panel of the control device 1, selects the type of wheel to be edited and sets the editing program for that particular disk on the same panel, and the editing program is entered into the memory of the control device 1 in advance.

On the proposed machine, it is possible to edit the wheel rim, edit the “drawdown” of the disk shelf, edit the “eight”, that is, the non-perpendicular position of the axis of rotation of the disk to the plane of rotation of the disk of the wheel, edit the ellipse of the disk and edit with conversion of the dimensions of the disk, for example, changing the base offset of the rim wheel drive.

Editing the wheel disc is as follows. The operator installs a wheel disc on the faceplate of the machine and fastens it. Then, using the appropriate button on the machine’s control panel, according to the appropriate program built into the control device 1, it automatically installs actuators 2 (and this is a desktop with carriages relative to the spindle with a wheel disk mounted on it) in the working area of the machine.

Then the operator on the control panel presses the “Start” button and in the control device the program for automated editing of the wheel disk is launched. All actuators 2 operate according to the commands of the microcontroller and industrial computer in an automated mode, and the operator only observes the progress of the process of dressing and processing of the wheel disk according to the corresponding program recorded in the memory of the control device with reference to a specific size of the wheel disk, for example, to Volga cars, Moskvich, Gazelle, VAZ, IL, etc.

The sensors 3 monitor during the editing process the current geometric dimensions of the wheel disk and the control device 1 receives continuously information from the sensors and, in accordance with the specified editing program, controls the actuators 2 to provide the specified geometric dimensions of the disk, which are set from the memory of the control device 1 for a particular size of the wheel disk .

In order to correct complex damage to wheel disks in accordance with a given program, the machine performs “reverse” deformation of the disk, and then carries out editing with deformation to the nominal size of the wheel disk.

When using an industrial computer as a control device with an interface control device connected to it, the operator is able to better visually control the entire technical process of editing the wheel disk from the moment the disk is installed on the faceplate of the machine and until it is removed from the machine. Moreover, the entire technical process is carried out according to a given program for controlling all actuators 2.

And the operator has the opportunity to work with a database of geometric dimensions of standard sizes of wheel disks.

Thus, the machine operator does not lose time measuring the sizes of deformed disks, but selects information about them from the computer's memory.

To carry out automated installation (disposition) of the wheel disk in the working area of the machine, the operator only needs to click on a specific button on the control panel or on the touch panel. That is, the wheel disk in an automated mode is fed into the working area of processing, that is, in the area of actuators 2 (desktop with carriages and with run-in rollers).

After the wheel disk is corrected, the operator again presses the corresponding button on the control panel, the actuators 2 are retracted from the disk, that is, the disk is also removed from the working area by a given program for automated control of the actuators.

To increase labor productivity, the proposed machine is equipped with additional sensors 4, designed for preliminary measurement of the geometric dimensions of the wheel disk immediately after installing the disk on the machine, entering information about its geometric dimensions in the database of the control device 1.

This database can be used later when editing disks with similar sizes and defects.

Literature

1. “Stand for dressing rims of automobile wheels of type P-184M”, manufactured at the GARO enterprise in Veliky Novgorod, see http: // www. In detail garo.novgorod.ru//.

Claims (4)

1. Automated machine for editing wheels of automobile wheels, comprising a control device and actuators connected to it, characterized in that it further comprises sensors for connecting at least the geometric dimensions of the wheel, sensors connected to actuators and a control device, allowing to the control device, based on the information received from the sensors, to carry out in an automated mode the technological process of editing the wheel disk according to the corresponding th program set by the user. 2. The machine according to claim 1, characterized in that, as a control device, it comprises at least an industrial computer with an interface device for controlling the actuators of the machine connected to it. 3. The machine according to claim 1, characterized in that the control device is configured to automatically install the wheel disk in the working area of the machine, subsequent dressing and removal from the machine after finishing dressing. 4. The machine according to claim 1, characterized in that it is equipped with sensors designed for preliminary measurement of the geometric dimensions of the wheel disc and subsequent input of information about these sizes into the control device before starting the editing process.

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