Positioning device for workpiece
By designing automated equipment for the framework and measurement points, the problem of the accuracy of traditional manual measurement relying on human factors has been solved, enabling efficient, low-cost, and multi-distance measurement of long workpieces.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ROCK ROOTS OY
- Filing Date
- 2024-08-30
- Publication Date
- 2026-04-10
AI Technical Summary
Traditional workpiece position measurement methods rely on manual measurement, and their accuracy is affected by the measuring equipment and the operator's skill level. Moreover, existing CNC machine tools are large and expensive, making it difficult to meet the multi-distance measurement needs of long workpieces such as beams.
A device comprising a frame, a positioning device, measuring points, and a computing device is designed. The frame and measuring points are moved longitudinally and laterally along the workpiece by a motor-driven mechanism, and automated measurement is achieved by combining a laser rangefinder and a computing device.
It improves the accuracy and efficiency of workpiece position measurement, reduces user errors, is suitable for multi-distance measurement of long workpieces, and is easy to operate and has a low cost.
Smart Images
Figure CN121844181A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] Generally, the present invention relates to measuring equipment. In particular, but not exclusively, the present invention relates to a device for determining positions on a workpiece. BACKGROUND
[0002] Traditionally, when making holes or measuring points on a workpiece, such as a beam, the user has to measure and mark the points on the beam manually according to a drawing. The manual measurements are made in relation to the beam and the accuracy depends entirely on the accuracy of different measuring devices, such as roll measures, and the skill of the staff using them.
[0003] In addition, the size of the beam can vary and the drawing can not correspond to the actual size of the beam, which further reduces the accuracy of the measured point positions. After the measurements of the size, machining is usually performed on the measured point positions or lines, such as drilling, cutting or welding.
[0004] In addition, CNC (Computer Numerical Control) machine devices are known in the prior art, in which the workpiece is guided and machined by large equipment that measures, transports and machines the workpiece as it travels through the CNC machine. However, these equipment are bulky, complex in structure, cannot be operated manually (except through a computer user interface) and their cost is higher than typical manual measuring devices. SUMMARY
[0005] The object is to at least alleviate the problems described above which the prior arrangements have failed to satisfactorily solve, and also to provide a feasible solution for a device for determining positions on a workpiece.
[0006] A main advantage of the device according to the invention is that the device comprises all the necessary measuring devices incorporated in the device itself.
[0007] This has the benefit of easy use and the solution can reduce user errors and inaccuracies.
[0008] A further advantage of the device according to the invention is that the arrangement is motorized, allowing the device to be operated automatically. The device can also be quickly moved from one workpiece to another.
[0009] Another advantage of this invention is that it allows for sufficient accuracy relative to relevant workpiece measurement and machining standards over a wide range of measured distances. This is an important advantage when dealing with elongated workpieces such as beams and trusses, which may require both short and long-distance measurements, where the accuracy of these measurements must remain within the tolerances set by relevant standards. This invention is preferably directed towards elongated workpieces, but as will be apparent to those skilled in the art, its features and core invention can also cover other shapes.
[0010] The technical advantage of this invention is that users can place the device on any longitudinal workpiece, such as an I-beam or an H-beam, and position the device relative to the workpiece so that the dimensions of the workpiece provide a direct reference for the device's measurement and provide input to the device, enabling the device to perform measurements and move relative to the workpiece.
[0011] The above-mentioned objective is achieved through an embodiment of the device according to the present invention.
[0012] Therefore, in one aspect of the present invention, an apparatus for determining a position on a workpiece is provided, wherein the apparatus comprises: - A frame, the frame being arranged to be movable along the longitudinal direction of the workpiece by a first motor, thereby moving the entire device on and / or above the workpiece in the said direction, wherein the first motor is arranged to the frame; - A positioning device for positioning the frame relative to at least one side or edge of the workpiece, such that the frame can move relative to the workpiece in a longitudinal direction; - Measuring point, which is connected to a movable device, the movable device facilitating the movement of the measuring point relative to the frame in a lateral direction and / or a vertical direction relative to the workpiece via a second motor, wherein the second motor is arranged to the frame or to the movable device. - A measuring instrument for determining the position of the measuring point relative to the workpiece in the longitudinal direction, and a measuring instrument for determining the position of the measuring point relative to at least one side of the workpiece in the transverse and / or vertical directions, wherein the frame is positioned relative to the at least one side by the positioning device; - A computing device, coupled to the first motor, the second motor, and the measuring instrument, and arranged as follows: - Receive the location information of the measurement point from the measuring instrument. - Control the first motor and the second motor to move the measuring point to a position on the workpiece.
[0013] Further embodiments of this disclosure are presented in the dependent claims.
[0014] The utility of this invention stems from multiple factors, which depend on each specific implementation.
[0015] The expression “a number of” in the text refers to any positive integer starting from one (1), such as one, two, or three.
[0016] The word “multiple” in the text refers to any positive integer starting from two (2), such as two, three or four.
[0017] Different embodiments of the present invention are disclosed in the dependent claims. Attached Figure Description
[0018] The invention will now be described in more detail with reference to the accompanying drawings, in which: Figure 1 An isometric view of an embodiment of the device according to the present disclosure is shown; Figure 2 An isometric view of an embodiment of a device having a computing entity according to the present disclosure is shown; Figure 3 A bottom view of an embodiment of the device according to the present disclosure is shown; Figure 4 A side view of an embodiment of the device according to the present disclosure is shown; Figure 5 A top view of an embodiment of the device according to this disclosure is shown; Figure 6 An isometric view of an embodiment of a device having a rotating arm arranged to a frame, according to the present disclosure, is shown. Figure 7 An isometric view of an embodiment of a device having a rotating arm coupled to a frame via a motor, according to the present disclosure, is shown. Figure 8 An isometric view of an embodiment of a device having a rotating arm laterally attached to a workpiece according to the present disclosure is shown. Figure 9 An isometric view of an embodiment of the apparatus according to the present disclosure, wherein the measuring points measure the inner wall of the workpiece; Figure 10 An isometric view of an embodiment of the apparatus according to the present disclosure, wherein the measuring points measure the outer wall of a workpiece. Detailed Implementation
[0019] refer to Figure 1The device (100) includes a frame (102) that can be moved along the longitudinal direction of a workpiece (130) (such as a long bar, I-beam, or H-beam) by a first motor (104), thereby moving the device (100) on and / or above the workpiece (130) in said direction. The frame (102) is held in place along the longitudinal direction of the workpiece (130) by a positioning device (108) that positions the frame (102) relative to at least one side of the workpiece (130). The positioning device (108) positions the frame (102) such that the frame (102) does not move laterally relative to the workpiece (130), but can move longitudinally relative to the workpiece (130). The positioning device (108) may include rollers that position the device (100) relative to the side of the workpiece (130) and provide movement in the longitudinal direction relative to the workpiece (130). Alternatively, the frame (102) may include rolling members (106) in the bottom and top portions of the frame (102) to provide movement in the longitudinal direction relative to the workpiece (130). A first motor (104) may be coupled to the rolling members (106). The positioning device (108) may include mechanical means movable relative to the workpiece (130), such as one or more rollers movable relative to the workpiece (130), and / or magnetic means providing force to hold the frame (102) against the workpiece (130), such as one or more magnets providing force to hold the frame (102) against the workpiece (130). Alternatively, the positioning device (108) may include a shape, such as an angle of about 90 degrees, that allows positioning of the device (100) relative to a corner, side, or edge of the workpiece (130). Therefore, the positioning device (108) can position the device (100) relative to the workpiece (130) by manually using the device (100) relative to the workpiece (130), and / or the positioning device (108) may include magnetic or mechanical means to fix the device (100) against the workpiece (130).
[0020] The measuring point (110) is connected to a movable device (112) powered by a second motor (114), wherein the measuring instrument (116a) Figure 1(Not shown) A measuring point (110) is used to determine the longitudinal distance along the workpiece (130). The measuring point (110) may have markers arranged thereto, which is another method of tracking the distance traveled relative to the workpiece (130). Thus, a movable device (112) constitutes a movable support for the measuring point (110), which may also optionally be used as an attachment point for a tool. Another measuring instrument (116b) uses the measuring point (110) to determine the lateral and / or vertical distance relative to at least one side of the workpiece (130). A second motor (114) facilitates movement of the movable device (112) relative to the frame (102) in the lateral and / or vertical directions relative to the workpiece (130). The second motor (114) may be attached to the frame (102) or the movable device (112). In an embodiment of the device (100), the positioning device (108) includes means for positioning the frame (102) from two sides of the workpiece (108), and a third motor (118) is arranged to move the positioning device (108) to position the frame (102) from two sides of the workpiece (130).
[0021] The measuring point (110) constitutes a point whose position is moved by moving the device (100) on the workpiece (130). The position of the measuring point (110) is measured directly, or it is used as a reference point relative to which it can be measured. The measuring point (110) may include a center punch for marking points in the workpiece (130). The measuring point (110) may also include a hole or a placement for machining tools such as drill bits. The measuring point (110) may include a scribing device, a printer, or such a marker for generating measuring marks. Such marks may be points, points, lines, or curved paths, which can be generated when the device (100) is moving or stationary. Alternatively, the measuring point (110) includes a hole for a center punch, and the center point can be marked through the hole using a separate center punch or pen. Thus, the measuring point (110) may include a physical point of the device (100) or a reference point relative to which a measuring point or line can be defined. Alternatively or additionally, the measurement point (110) can be used as an attachment point for the tool.
[0022] The apparatus (100) further includes measuring instruments (116a, 116b) for determining the longitudinal and lateral and / or vertical positions of the measuring point (110) relative to the workpiece (130). The measuring instrument (116a) is used to determine the longitudinal position of the measuring point (110) relative to the workpiece (130), and the measuring instrument (116b) is used to determine the lateral and / or vertical position of the measuring point (110) relative to at least one side or edge of the workpiece (130), wherein the frame (102) is positioned relative to said at least one side or edge by a positioning device (108). The longitudinal and lateral and / or vertical distances are preferably measured from at least one end, edge, or side of the workpiece (130) relative to the measuring point (110). The measuring instruments (116a, 116b) may include a laser rangefinder that measures the distance to a reference point such as at least one longitudinal and lateral and / or vertical end, edge, or side of the workpiece (130). The laser rangefinder can be arranged within a frame (102), with the laser device located at the frame (102), allowing measurements to be taken without obstruction by the size of the device (100). Furthermore, the laser rangefinder is preferably a component that can be connected to the processor of the device (100). Alternatively, the laser rangefinder can be a dedicated measuring device with its own processor for measuring longitudinal and lateral and / or vertical distances. Alternatively or additionally, the measuring device (116a) can be implemented by a measuring tape or disc, or by an optional measuring tape that can be used in the device (100). Clearly, the measuring device can be located in many different positions on the device (100), and the calculation of the measurement point (110) relative to the measuring device reading can be performed within the device, taking into account the configuration, size, etc., of the device (100). The measuring devices (116a) and (116b) can be implemented as a single component or several components arranged together.
[0023] In an implementation, the device (100) may provide means for relieving the weight or stress induced by the device (100) on the workpiece (130). Such means may include, for example, an extension from the device (100) to the ground, or means for suspending the device (100) relative to the workpiece (130), thereby removing at least a portion of the load of the device (100) from the workpiece (130).
[0024] The mating element can be positioned at a reference point such that the laser beam is reflected from the mating element. For example, the mating element can be positioned at an end of the workpiece (130) such that a laser rangefinder measures the distance to that end of the workpiece (130). Alternatively, the device (100) can include at least two laser rangefinders measuring distances to at least two reference points. Here, the two laser rangefinders can be located on opposite sides of the frame (102). For example, the two reference points can be located at each end of the workpiece (130) such that at least two rangefinders measure the distance to each end. The mating element can accommodate reflections from virtually any surface or object, thus eliminating the need for a specific reflective surface. However, while a dedicated mating element can improve the accuracy of measurements performed by the device (100), it is not essential for the proper functioning of the device (100). In particular, the white surface of the mating element can be used to improve the accuracy of longitudinal and lateral and / or vertical measurements. However, the walls of a building, another beam, such as the intersection or bend of a beam, or the point on the support on which the workpiece (130) is placed can also be used to measure reflections for laser equipment.
[0025] Measuring instruments (116a, 116b) for determining longitudinal and lateral and / or vertical distances and positions may include mechanical tape measuring tapes, wherein the measurement is performed at the device (100), but the tape may be pulled to the side or end of the workpiece (130). Such devices may also be used to determine lateral distances from at least one side of an elongated workpiece (130).
[0026] The movable device (112) includes components that move laterally relative to the workpiece (130). The movable device (112) can be implemented via components that move via a drive screw or lead screw, wherein the drive screw or lead screw is rotated using a knob located at the end of the screw on either side of the frame (102); or by manually pushing the movable device (112) and / or by fine-tuning with another knob. The lateral movement measured by the measuring instrument (116b) may preferably include optical sensors, such as pulse sensors or distance sensors, such as laser distance sensors. The pulse sensors may be located at the end of the screw, such that rotating the knob between the pulse sensors rotates the plate, wherein the rotation can be measured as pulses, and the pulses can be further converted into a measurement of the lateral movement. Optionally, the pulse sensors may be arranged to the movable device (112) such that the sensors move linearly with the movable device (112) and measure their own position with reference to the surface of the frame (102) or the surface of the workpiece (130). Here, the sensor itself is located within the moving part, while the pulse is located on a track, guide rail, lead screw, or surface associated with the movement of the movable device (112) as described above. Lateral movement can optionally be measured using a magnetic sensor arrangement, such as using a magnetic sensor that moves relative to and is at least functionally connected to a magnetic strip. The magnetic sensor can be arranged to the movable device (112) such that the sensor moves linearly with the movable device (112) and its movement is measured with reference to a magnetic strip on the surface of the frame (102). Here, the magnetic sensor itself is located within the moving part, while the magnetic strip is fixed to the surface of the frame (102) such that the magnetic sensor travels against the magnetic strip when the movable device (112) is moved.
[0027] In another embodiment, the device (100) can be positioned to the workpiece (130) from one side, but has positioning devices (108) on both sides of the device (100). In an alternative embodiment, the device (100) may also include a hook or such element that extends to the opposite side of the positioning device (108). The hook or such element can be used to apply force and / or pressure to the positioning device (108) to secure the device (100) relative to the workpiece (130). However, the hook or such element can also provide a measuring tool for measuring the width of the workpiece (130) from the positioning device (108).
[0028] Figure 2 A top view depicting an embodiment of the device (100) and frame (102) is shown. Figure 2 Similar to Figure 1The difference lies in the addition of a top layer that houses the screen and buttons for computationally operating the device (100). In this embodiment, measuring instruments (116a, 116b) receive position information of the measuring point (110), which is then received by a computing device (124) coupled to the first motor (104), the second motor (114), and the measuring instruments (116a, 116b). In the same embodiment, the computing device (124) controls the first motor (104) and the second motor (114) to move the measuring point (110) to a desired position on the workpiece (130). The task of the computing device (124) can be performed at the device (100) as illustrated, or at least partially or completely remotely. User input for operating the computing device (124) can be G-code.
[0029] Figure 3 The device (100) and frame (102) are depicted in a bottom view. Rolling members (106) are shown on the bottom and top sections of the device (100). The first motor (104) ( Figure 3 (Not shown) The rolling member (106) is operated to produce longitudinal movement of the frame (102) relative to the workpiece (130). A positioning device (108) is shown on the left and right sides of the device (100), having small wheels for locking the frame (102) against the workpiece, thereby allowing controlled longitudinal movement of the device (100) along with the first motor (104) and the rolling member (106) along the workpiece (130). Two measuring points (110) are shown extending from movable devices (112) on the bottom and upper sections of the device (100). A second motor (114) is shown on the upper left side of the device (100). A measuring instrument (116a) is shown on the right side of the positioning device (108), located in the middle of the positioning device (108).
[0030] Figure 4 A side view of the device (100) attached to the workpiece (130) is depicted. It can be seen that the measuring point (110) is in close contact with the workpiece (130). Figure 5 In the top view, you can see how the positioning device (108) and its rollers are aligned with the workpiece (130). The rollers of the positioning device (108) are in direct contact with the workpiece (130).
[0031] Figure 6 and Figure 7Another embodiment of the device (100) including a rotating arm is depicted. In this embodiment, a second motor (114) is arranged to the frame (102) and coupled to a movable device (112) that moves a measuring point (110) in a lateral and / or vertical direction relative to the workpiece (130) like a rotating arm. The second motor (114) is capable of determining a lateral and / or vertical distance relative to at least one side of the workpiece (130) via the measuring point (110). Such a rotating arm may also include a telescopic component to extend or reduce the length of the rotating arm.
[0032] In another embodiment, such as Figure 8 to Figure 10 As depicted, a rotating arm formed by a movable device (112) and a measuring point (110) has a second movable device (120) positioned between the movable device (112) and the measuring point (110). The second movable device (120) is coupled to a fourth motor (122) which moves the second movable device (120) relative to the workpiece (130) in a third direction, such as the depth direction. In this way, the rotating arm is capable of moving the measuring point (110) relative to the workpiece (130) in the lateral and / or vertical directions and in the depth direction. The fourth motor (122) is capable of determining the distance in the depth direction relative to the workpiece (130) via the measuring point (110).
[0033] exist Figure 8 In this embodiment, the device (100) is positioned such that it measures the distance relative to the connecting intermediate section of the H-beam workpiece (130). A rotating arm structure including a movable device (112), a second motor (114), a second movable device (120), and a fourth motor (122) enables the device (100) to measure surfaces at a lower level relative to the device (100). Thus, regardless of the embodiment, the device (100) can measure distances relative to the side, top surface, or end of the workpiece (130).
[0034] Figure 9 An embodiment of a device (100) for measuring the inner wall of an H-beam workpiece (130) is depicted. The rotating arm and measuring points (110) are positioned such that the device (100) can be used to measure the vertical surface and / or different horizontal surfaces of the workpiece (130).
[0035] exist Figure 10 In the middle, the equipment (100) is like in Figure 8 to Figure 9 The components are similarly placed. However, this embodiment shows multi-directional movement of the rotating arm, which allows the embodiment to measure the outer surface of the H-beam workpiece (130). In addition, the rotating arm can be arranged such that the measuring point (110) is at a lower level relative to the device (100).
[0036] In an embodiment, the rotating arm may include optical devices for measuring longitudinal and lateral and / or vertical distances and positions relative to the workpiece (130).
[0037] Regardless of the implementation, the device (100) uses measuring points (110) and measuring instruments (116a, 116b) or one or more motors (104, 114, 118, 122) to measure distances relative to the workpiece (130). In embodiments without measuring instruments (116a, 116b), servo motors (104, 114, 118, 122) can be used to measure distances relative to the workpiece (130) in the longitudinal, lateral, and / or vertical and / or depth directions. Measuring instruments (116a, 116b) and one or more motors (104, 114, 118, 122) can also be used in combination to measure distances relative to the workpiece (130).
[0038] In one implementation, distance can be measured by setting a stepper motor to travel a predetermined distance and measuring the distance traveled. Motors such as BLDC motors (brushless DC motors) and / or movement methods and instruments such as FOC (field orientation control) controllers can also be used for distance measurement. The aforementioned stepper motor is merely an example, and other motors, controllers, instruments, and / or tools can also be used.
[0039] Furthermore, in embodiments where the device (100) is equipped with a first motor (104), a second motor (114), a third motor (118), and a fourth motor (122), the motors (104, 114, 118, 122) and measuring instruments (116a, 116b) are coupled to a computing device (124). The computing device (124) receives position information of the measuring point (110) from the measuring instruments (116a, 116b). The computing device (124) can be used to control the first motor (104), the second motor (114), and the fourth motor (122) to move the measuring point (110) to a position on the workpiece (130). The computing device (124) can also be used to control the third motor (118) to move the positioning device (108) to position the frame from both sides of the workpiece (130).
[0040] In an alternative embodiment, the movable device (112) and the second movable device (120) can be implemented by a robotic arm. The paragraphs describing different embodiments of the rotating arm described above can also be implemented using a robotic arm. In embodiments using a robotic arm, the longitudinal distance and position can be measured relative to the surface of the workpiece (130).
[0041] The device (100) can be arranged to be compatible and configurable with respect to another device (100).
[0042] Therefore, those skilled in the art can, based on this disclosure and general knowledge, apply the teachings provided to achieve the scope of the invention as defined by the appended claims in each specific use case by making necessary modifications, deletions, and additions.
Claims
1. A device (100) for determining a position on a workpiece (130), characterized in that, The device (100) includes: - A frame (102) arranged to be movable along the longitudinal direction of the workpiece (130) by a first motor (104), thereby moving the entire device (100) along the direction on and / or above the workpiece (130), wherein the first motor (104) is arranged to the frame (102). - A positioning device (108) for positioning the frame (102) relative to at least one side or edge of the workpiece (130) such that the frame (102) can move relative to the workpiece (130) in the longitudinal direction; - A measuring point (110) connected to a movable device (112), the movable device (112) facilitating the movement of the measuring point (110) relative to the frame (102) in a lateral direction and / or a vertical direction relative to the workpiece (130) via a second motor (114), wherein the second motor (114) is arranged to the frame (102) or to the movable device (112). - A measuring instrument (116a) for determining the position of the measuring point (110) in the longitudinal direction relative to the workpiece (130), and a measuring instrument (116b) for determining the position of the measuring point (110) relative to at least one side of the workpiece (130) in the transverse and / or vertical directions, wherein the frame (102) is positioned relative to the at least one side of the workpiece (130) by the positioning device (108); - A computing device (124), coupled to the first motor (104) and the second motor (114) and the measuring instruments (116a, 116b), and arranged as follows: - Receive the position information of the measurement point (110) from the measuring instruments (116a, 116b). - Control the first motor (104) and the second motor (114) to move the measurement point (110) to a position on the workpiece (130).
2. The device (100) according to claim 1, wherein, The positioning device (108) includes a plurality of magnets for attaching to the side of the workpiece (130).
3. The device (100) according to any of the preceding claims, wherein, The positioning device (108) includes means for positioning the frame (102) from two sides of the workpiece (130).
4. The device (100) according to any of the preceding claims, wherein, The first motor (104) is arranged to the frame (102) and a plurality of rolling members (106) at the frame.
5. The device (100) according to any of the preceding claims, the device comprising a third motor (118) coupled to the computing device (124), wherein, The third motor (118) is arranged to move the positioning device (108) to position the frame (102) from both sides of the workpiece (130).
6. The device (100) according to any of the preceding claims, the device comprising a second movable device (120) coupled to the computing device (124) and a fourth motor (122), wherein, The fourth motor (122) is arranged to move the measuring point (110) relative to the workpiece (130) in a third direction, such as the depth direction.
7. The device (100) according to any of the preceding claims, wherein, The positioning device (108) includes rollers that facilitate longitudinal movement of the frame (102) relative to the workpiece (130).
8. The device (100) according to any of the preceding claims, the device comprising a rolling member (106) at the bottom of the frame (102) that facilitates longitudinal movement of the frame (102) relative to the workpiece (130).
9. The device (100) according to any of the preceding claims, wherein, The first motor (104), the second motor (114), the third motor (118) and the fourth motor (122) are servo motors.
10. The device (100) according to any of the preceding claims, wherein, The first motor (104), the second motor (114), the third motor (118) and / or the fourth motor (122) are used to measure distances in the longitudinal, lateral and / or vertical and / or third directions, such as the depth direction.