A method for monitoring and positioning at least one traveling beam for a metal press, and the metal press itself.

Abstract

This invention relates to a method for monitoring and adjusting the position of at least one component, particularly a traveling beam (3), which is slidably guided between supports of a press frame (2) within a press frame (2). The method includes continuously measuring the center orientation of the component within the press frame (2) and correcting the orientation of the component within the press frame (2) based on the detected measurement results using a preferred automatically adjustable guide element (10) of a sliding guide portion (6) of the press. The center orientation of the slidably guided component within the press frame (2) is measured by detecting the position of at least one, preferably two, reference points (7) of the slidably guided component in a plane preferably extending transversely to the longitudinal central axis (4) of the press. The invention also relates to a press having an automatically adjustable guide element (10) and means for manipulating the guide element (10) according to the measured position of the component.

Description

Technical Field

[0001] This invention relates to a method for monitoring and adjusting at least one component, such as a traveling beam or a receiver retainer, that is slidably guided between supports of a press frame within a press frame. The invention particularly relates to a method for monitoring and adjusting the position of at least one component, particularly a traveling beam and / or a receiver retainer, slidably guided between supports of a press frame within a press frame, wherein the method includes continuously measuring the center orientation of the slidably guided component within the press frame, and correcting the orientation of the slidably guided component within the press frame based on the detected measurement results using an adjustable guiding element of the sliding guide portion of the press.

[0002] The present invention also relates to a press having a press frame and a crossbeam subjected to extrusion force during press operation, having at least one component that is slidably guided within the press frame, particularly a traveling beam, push rod and / or receiver holder that is slidably guided, having a sliding guide portion disposed on a guide post and having an adjustable guide element having the sliding guide portion. Background Technology

[0003] Extrusion presses typically operate by pressing a block of material against a die using a punch (direct extrusion press). In addition, extrusion presses that press a block receiver or receiver with a metal block against a hollow extrusion punch (indirect extrusion press) have also become popular. Such presses include, for example, a press frame with one or more piston-cylinder units acting between a column beam and a counterbeam to apply the extrusion force, a receiver holder, and a travel beam carrying the extrusion punch. The travel beam and receiver holder are slidably movable on guide posts of the press frame. Furthermore, they are equipped with adjustable guide seats having guide surfaces aligned with the main axis of the press. For trouble-free operation of such extrusion presses and for achieving high dimensional stability in the wall thickness of the manufactured hollow profiles, the centering orientation of the receiver holder relative to the extrusion tool is important.

[0004] A horizontal extrusion press is known from patent document DE 39 01 961 A1. This extrusion press has a receiver holder and a traveling beam that are axially movable within a press frame between a lower guide portion supporting the weight and an upper guide portion that provides clamping action. To align the receiver holder and the extrusion tool, the receiver holder and the traveling beam are provided with adjustable guide seats, which are flexibly connected to the receiver holder and the traveling beam via pressure elements and held in a form-fitting manner on the upper guide portion under pressure. A measuring instrument for detecting and displaying the inclination of the receiver axis is provided between the receiver holder and the press frame. The measuring instrument measures and displays the distance between the guide seat and the receiver holder or traveling beam, and is arranged parallel to the pressure elements on the upper guide seat of the receiver holder and the traveling beam that provides clamping action. The pressure elements themselves are constructed as the measuring instrument. Patent document DE 39 01 961A1 proposes assigning a measurement display on the control panel of a press to show the measured values ​​of any deviations, allowing the operator to recognize the degree of deviation and make corrections as necessary. Skewness, asymmetrical thermal expansion, etc., can cause changes in the distance between the end component of the receiver holder or travel beam and the sliding guide, causing the guide seat to shift under the force of the disc spring assembly mounted thereon. While this method reliably identifies any angular and lateral deviations in the receiver's alignment, the identification is done indirectly through measuring instruments on each guide seat, making automatic monitoring and centering of the press's receiver holder and travel beam more difficult.

[0005] A method of this type and such a press are also known from patent document EP 3 677 356 A1. JPS63 132716A describes a method for orienting the receiver of a press within a receiver holder, wherein the eccentricity between the receiver and the press punch is detected, calculated, and corrected by means of multiple laser light sources and photodetectors.

[0006] Other prior art is known from patent documents EP 3 003 701 B1, CN 107243586 A, CN 201669364U, JP 2020-99930A, US 6 259110B1 and JP H04 141 337. Summary of the Invention

[0007] The object of the present invention is to provide a method of the type described at the beginning, which enables relatively simple monitoring of the center orientation of components that are movably guided in the main axis of a press and enables automatic correction of the center orientation of these components.

[0008] This objective is achieved by the features of the method according to claim 1. This objective is also achieved by a press having the features of claim 10. The corresponding dependent claims describe advantageous variations of the invention.

[0009] According to one aspect of the invention, a method is proposed for monitoring and adjusting the position of at least one component, particularly a traveling beam, push rod, and / or receiver retainer, which is slidably guided between supports of a press frame within a press frame. The method comprises continuously measuring the center orientation of the component slidably guided within the press frame and correcting the orientation of the component slidably guided within the press frame based on the detected measurement results using an adjustable guiding element of the sliding guide portion of the press. The method is characterized in that the center orientation of the component slidably guided within the press frame is measured by detecting the positions of two reference points of the component slidably guided in a plane extending transversely to the longitudinal central axis of the press.

[0010] For example, the travel beam of a press can be considered as a slidingly guided component whose center orientation will be monitored and corrected by the method according to the invention. However, the method is not limited to this; conversely, the center orientation of the receiver holder on the press can also be monitored, displayed to the equipment operator, and / or automatically corrected by appropriate control or adjustment. The center orientation or position of the slidingly guided component relative to the main axis of the press or relative to the longitudinal center axis of the press in the XY coordinate system can be determined by measuring the position of a reference point. By comparing the target position of the reference point coordinates with the actual position, the required correction amount for the orientation of the slidingly guided component can be derived. The method can be applied regardless of the number of guide columns or pressure sleeves. Therefore, the position of the guided component in, for example, a two-column press or a four-column press can be monitored and / or adjusted.

[0011] Since the measuring component preferably detects positional deviations of less than or equal to 2 mm, preferably less than or equal to 0.5 mm, and more preferably less than or equal to 0.1 mm, it can also correct small deviations and thus improve the repeatability of the pressing process.

[0012] The method according to the invention has the advantage that reference points or reference marks, for example, set on the traveling beam of the press, can be detected by optical means and thus detected at a certain distance. The reference points are preferably arranged at two points as far apart as possible from each other around the longitudinal axis of the press, and preferably in a plane extending transversely to the longitudinal axis of the press.

[0013] For example, a mark that can be detected using a laser is considered as a reference point. Preferably, the position, i.e., orientation, of the reference point is detected by at least one measuring component mounted on the press frame. For example, an image processing sensing system is considered as the measuring component. This sensing system can be additionally equipped with a laser triangulation device to detect depth information.

[0014] In an advantageous variation of the method according to the invention, the guide element of the sliding guide is automatically adjusted based on the detected measurement results.

[0015] Preferably, the number of adjustment processes and / or the adjustment paths traversed and / or the positional data associated with each adjustment process are recorded in the control device and / or adjustment device. The control device and / or adjustment device can primarily be configured to automatically, i.e., without operator initiation, initiate the adjustment process of the guide element of the sliding guide. However, the control device and / or adjustment device can also output corresponding information to the operator, who then initiates the adjustment process. Furthermore, the control device and / or adjustment device can also, as described above, output information regarding the wear condition of the sliding guide.

[0016] The press is preferably used for forming metal materials. Particularly in this application, the processing forces are high, while the required tolerances for the finished pressed components are small. The position adjustment according to the invention reduces wear at the press and can compensate for deviations to meet the required component tolerances.

[0017] This method is preferably used in free forging presses, die presses, isothermal forging presses, ring billet presses, deep drawing presses, extrusion presses and / or punching presses or stretching presses.

[0018] According to another aspect of the invention, a press is provided comprising: a press frame and a crossbeam that absorbs extrusion pressure during press operation; at least one component, particularly a traveling beam and / or a receiver holder, which is slidably guided on a guide post within the press frame; a sliding guide portion disposed on the guide post and preferably an automatically adjustable guide element thereof, wherein, in order to perform the above method, at least two reference points, preferably optically detectable, are provided spaced apart from each other on the slidably guided component or on the traveling beam in a plane preferably extending transversely to the longitudinal central axis of the press, and wherein at least one measuring component for detecting the position of the reference points is provided on the press frame.

[0019] The press frame can have, for example, column beams and balance beams as supports, which can be connected to each other by tie rods. The press according to the invention can be constructed as a horizontal or vertical direct extrusion press, or a horizontal or vertical indirect extrusion press. Attached Figure Description

[0020] The invention will now be explained with reference to embodiments shown in the accompanying drawings. Wherein:

[0021] Figure 1 A cross-section of a metal press according to the invention is shown; and

[0022] Figure 2 A cross-sectional view of an adjustable guide element on a press according to the invention is shown. Detailed Implementation

[0023] Figure 1 A cross-sectional view of the press 1 according to the invention is shown from the viewing direction of a measuring assembly 20 arranged on a press frame 2 of the press 1. The measuring assembly 20 is arranged between the upper beam, i.e., the column beam, and the traveling beam 3 of the press 1. The traveling beam 3 is slidably guided relative to the longitudinal central axis 4 of the press 1 on guide posts 5 of the press frame 2, which extends into the drawing plane. For this purpose, a correspondingly constructed sliding guide 6 is provided on the traveling beam 3, which, as described below, has an automatically adjustable guide element 10. The position of the traveling beam 3 is continuously monitored by means of the measuring assembly 20 arranged on the press frame 2. The measuring assembly 20 includes a laser sensor aligned with a reference point 7 arranged at a distance from the longitudinal central axis 4 on a plane extending transversely to the longitudinal central axis 4 of the press 1. Figure 1 The position or reference point relative to the longitudinal centerline 4 of the extrusion press 1 is detected in a coordinate system defined by the X and Y axes. The reference point 7 is set as an optical mark on the travel beam 3. The measuring assembly 20 is coupled to the adjustable guide element 10 via a control and / or adjustment device. If, for example, the travel beam 3 becomes misaligned due to unilateral or asymmetrical wear of the sliding guide 6, the measuring assembly 20 detects the change in position of the reference point 7 relative to the longitudinal centerline 4 of the press 1. The control and / or adjustment device sends a corresponding control pulse to one or more guide elements 10, which causes a corresponding positional correction of the travel beam 3.

[0024] The guide element 10 includes a housing 12 in which a screw 13, rotatably supported in a bushing 14, extends. The screw 13 extends through a first threaded hole 16 and a second threaded hole 17 of an adjusting wedge 15, which can be moved within the housing 12 by rotation of the screw 13. The threads of the threaded holes 16 and 17 are kinematic threads complementary to the threads of the screw 14. The adjusting wedge 15 rests against a guide wedge 18, which is connected to a slider 19 or a sliding plate. The slider 19, forming part of the sliding guide 6, is configured as a wear element and can be adjusted parallel to the longitudinal central axis 4, i.e., the main axis of the press 1.

[0025] The screw 13 has an engagement portion 11 at its end protruding from the housing 12 for a drive shaft of a drive unit (not shown). The drive unit may be, for example, a direct-acting electric motor or a motor with a transmission. To adjust the position of the slider 19, the screw 13 is rotated via the corresponding drive unit. The rotational movement allows the adjusting wedge 15 to slide along or against the direction shown by arrow A, wherein the guide wedge thus slides along or against the direction shown by arrow B, and the distance S between the guide post 5 and the slider 19 increases or decreases.

[0026] List of reference numerals

[0027] 1. Extrusion Press

[0028] 2. Press frame

[0029] 3. Traveling beam

[0030] 4. The longitudinal centerline of the press

[0031] 5 guide pillars

[0032] 6. Sliding guide section

[0033] 7 Reference Points

[0034] 8. No reference numerals are given for the attached figures.

[0035] 9. No reference numerals are provided for the attached figures.

[0036] 10. Guiding elements

[0037] 11 Joint

[0038] 12. Shell

[0039] 13 Screw

[0040] 14 Bushing

[0041] 15 Adjusting wedge

[0042] 16 First threaded hole

[0043] 17 Second threaded hole

[0044] 18. Guide wedge

[0045] 19 Slider

[0046] 20 Measurement Components

[0047] A arrow

[0048] Arrow B

[0049] S represents the distance.

Claims

1. A method for monitoring and / or adjusting the position of at least one component, said component being slidably guided within a press frame (2) between supports of the press frame (2), wherein, The method includes continuously measuring the center orientation of the component that is slidably guided within the press frame (2), and correcting the orientation of the component that is slidably guided within the press frame (2) based on the detected measurement results by means of an automatically adjustable guide element (10) of the sliding guide portion of the press. The method is characterized in that the center orientation of the component that is slidably guided within the press frame (2) is measured by detecting the positions of two reference points (7) of the component that is slidably guided in a plane extending transversely to the longitudinal central axis (4) of the press, wherein the position detection of the reference points (7) is performed by means of at least one measuring component (20) provided on the press frame (2).

2. The method according to claim 1, characterized in that, The position of the reference point (7) is detected by using a laser sensor.

3. The method according to claim 1 or 2, characterized in that, The position of the reference point (7) relative to the longitudinal centerline (4) of the press is detected.

4. The method according to claim 1 or 2, characterized in that, The guide element (10) of the sliding guide (6) is automatically adjusted according to the measured results.

5. The method according to claim 1 or 2, characterized in that, The number of adjustment processes and / or the adjustment paths traversed and / or the location data associated with each adjustment process are recorded in the control device and / or the adjustment device.

6. The method according to claim 5, characterized in that, The wear of the sliding guide (6) is determined by the number of adjustment processes and / or by the adjustment path traversed and output to the operator of the press.

7. The method according to claim 1 or 2, characterized in that, The measuring component detects a positional deviation of less than or equal to 2 mm.

8. The method according to claim 7, characterized in that, The measuring component detects a positional deviation of less than or equal to 0.5 mm.

9. The method according to claim 7, characterized in that, The measuring component detects a positional deviation of less than or equal to 0.1 mm.

10. The method according to claim 1 or 2, characterized in that, The press forms the metal material.

11. The method according to claim 1 or 2, characterized in that, The press is capable of free forging, die forging, isothermal forging, manufacturing ring blanks, pressing deep-drawn components, extruding and / or pressing punched and drawn components.

12. The method according to claim 1, characterized in that, The components are the traveling beam (3) and / or the receiver holder.

13. A press comprising: a press frame (2) and a crossbeam for absorbing extrusion pressure during operation of the press; at least one member within the press frame that is slidably guided on a guide post (5); a sliding guide portion (6) disposed on and / or engaged with the guide post (5); and an automatically adjustable guide element (10) of the sliding guide portion (5), wherein, In order to perform the method according to any one of claims 1 to 12, at least two reference points (7) are arranged spaced apart from each other on the slidingly guided member in a plane extending transversely to the longitudinal central axis (4) of the press, and wherein at least one measuring component (20) for detecting the position of the reference points (7) is provided on the press frame (2).

14. The press according to claim 13, characterized in that, The reference point can be detected optically.

15. The press according to claim 13 or 14, characterized in that, The measuring component (20) is coupled to the adjustable guide element (10) via at least one control device and / or adjustment device, such that the detected measurement signal can generate a control signal for manipulating the guide element (10), thereby automatically correcting the orientation of the slidingly guided component within the press frame (2) based on the detected measurement result.

16. The press according to claim 15, characterized in that, The guiding element is capable of automatic adjustment.

17. The press according to claim 13 or 14, characterized in that, At least one adjustable guide element (10) has at least one slider (19), at least one adjusting wedge (15), and at least one guide wedge (18) that are adjustable transversely to the direction of movement of the slidingly guided member of the press. The adjustment of the adjusting wedge and the guide wedge relative to each other causes the slider (19) to move transversely to the direction of movement of the slidingly guided member, wherein the adjusting wedge (15) can be adjusted steplessly by means of at least one screw driver.

18. The press according to claim 13 or 14, characterized in that, The press is configured to form metal materials.

19. The press according to claim 13 or 14, characterized in that, The press is configured as a free forging press, a die forging press, an isothermal forging press, a ring billet press, a punching press or a stretching press, a deep drawing press and / or an extrusion press.

20. The press according to claim 13, characterized in that, The components are the traveling beam (5) and / or the receiver holder.

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