Multifunctional accurate positioning tool suitable for hydroelectric generation large-scale machine manufacturing equipment

Abstract

The multifunctional precise positioning tool suitable for the hydroelectric generation large-scale machine manufacturing equipment is provided with a tool frame, the tool frame is provided with a multi-head multi-direction installation structure, the multi-direction installation structure comprises an installation disc arranged on the tool frame in a sleeving mode and a plurality of fixing arms fixedly installed on the installation disc, the fixing arms extend in the radial direction, and the tool frame is provided with a plurality of positioning holes. The outer end of each fixing arm is connected with a distance adjusting device, the outer end of each distance adjusting device is provided with a tool installation structure used for installing a detection tool, and the detection tool is any one or more of a trigger type measuring head, a scanning type measuring head, a standard detection test shaft and a standard detection test sleeve. The positioning device is convenient to use, accurate in positioning and capable of meeting the corresponding requirements of large mechanical manufacturing equipment such as hydroelectric power generation equipment.

Description

Technical Field

[0001] The invention relates to a multifunctional precise positioning tool suitable for large-scale mechanical manufacturing equipment for hydropower generation. Background Art

[0002] The machinery manufacturing industry, such as large-scale machinery manufacturing equipment for hydropower generation, often involves the detection / positioning of multi-hole coaxiality, radius, multi-hole positioning and equidistant dislocation. At present, the more accurate detection equipment is a three-dimensional coordinate measuring instrument. The workpiece is placed on the workbench of the measuring instrument, and the three-dimensional moving mechanism on the measuring instrument is used to move the detection tool to the required detection points for measurement, thereby obtaining the corresponding detection data. For example, Chinese patent document CN108571939A discloses a positioning device and a three-dimensional coordinate measuring instrument. The positioning device includes three positioning parts, and the three positioning parts are all fixed on the workbench. The three positioning parts are distributed in a triangular shape on the workbench and the distribution position matches the shape of the surface of the product. By contacting the surface of the product with the three positioning parts at the same time, the product can be fixed on the workbench at a preset position determined by the three positioning parts. After the position of the product is fixed, the product can be subsequently processed and the subsequent processing flow is simplified. The three-dimensional coordinate measuring instrument includes a measuring instrument body and the above-mentioned positioning device, and the positioning device is fixed on the workbench of the measuring instrument body. When the three-dimensional dimensions of a product are measured multiple times using the three-dimensional measuring instrument, the product can be positioned by a positioning device without establishing a measurement coordinate system each time. Chinese patent document CN113865534A discloses a three-dimensional measuring instrument, including a three-dimensional measuring instrument body, a base plate, an adjustment mechanism and a motor, the three-dimensional measuring instrument body and the base plate are slidably matched in the vertical direction, the adjustment mechanism is symmetrically arranged on the base plate, the adjustment mechanism is located between the base plate and the three-dimensional measuring instrument body, the adjustment mechanism includes a worm gear, a worm, an adjustment rod and an adjustment wheel, the worm gear tool mounting structure is connected to the base plate, the worm gear tool mounting structure is connected to the base plate, the worm gear is meshed with the worm, one end of the adjustment rod is connected to the worm gear, and the other end is connected to the adjustment wheel tool mounting structure, the adjustment wheel contacts the three-dimensional measuring instrument body, the motor is arranged on the base and linked to the worm, and the tool mounting structures of the adjustment rods in the symmetrically arranged adjustment mechanisms are opposite in direction, thereby adapting to the operation height requirements of operators of different heights. Chinese patent document CN108895953A discloses a contact detection tool, a three-dimensional coordinate measuring machine and a tool setting instrument. The contact detection tool uses a ball-column structure or a spring sheet as a support and reset method, and uses a grating or a Hall device as a detection device for displacement information (including detecting the direction and size of the displacement of the measuring end), which can more accurately compensate for errors, improve the anisotropy of the trigger detection tool, and improve the measurement accuracy. These prior arts have their own characteristics and are suitable for their respective occasions, but they still have limitations. Since the workpiece needs to be placed on the workbench of the measuring instrument, it is only suitable for smaller workpieces in practice. It is impossible to measure large-sized workpieces or bulky workpieces in large hydropower generation machinery, and it is also impossible to measure or locate according to needs during the manufacturing process. After the equipment is completed, if an error is found, it needs to be reworked, and the cost of error correction is very high.

[0003] On the other hand, in practice, manual measurements can be performed using portable laser detectors or manual measuring tools, and the required data can be calculated based on geometric principles. However, the precision and accuracy of these test results are relatively low, and they are highly dependent on the personal experience and skills of the operators, and are also relatively time-consuming. Summary of the invention

[0004] The purpose of the present invention is to provide a multifunctional and accurate positioning tool that is easy to use so as to meet the corresponding needs of large-scale mechanical manufacturing equipment such as hydropower generation.

[0005] The technical solution of the present invention is: a multifunctional precision positioning tool suitable for large-scale hydropower machinery manufacturing equipment, provided with a tool frame, the tool frame is provided with a multi-head multi-directional mounting structure, the multi-head multi-directional mounting structure includes a mounting plate sleeved on the tool frame and a plurality of fixed arms fixedly mounted on the mounting plate, the fixed arms extend radially, the outer end of each fixed arm is connected to a distance adjusting device, and the outer end of each distance adjusting device is provided with a tool mounting structure for installing detection tools.

[0006] The fixed arms may be distributed at equal angular distances.

[0007] Furthermore, the detection tool is any one or more of a trigger probe, a scanning probe, a standard detection test shaft and a standard detection test set.

[0008] The detection tools installed on different fixed arms can be the same or different.

[0009] Preferably, the tooling frame is in the shape of an elongated strip, for example, an elongated column (for example, a cylinder or a non-cylindrical column).

[0010] The number of the multi-head multi-directional installation structure may be one or more.

[0011] Preferably, the number of the multi-head multi-directional installation structures is two.

[0012] Furthermore, a certain distance is left between the two multi-head multi-directional installation structures or the distance is adjustable.

[0013] Furthermore, the distance adjustment device is installed on the outer end of the fixed arm with a fixed angle (the angle on the plane perpendicular to the extension direction of the tooling frame) or with an adjustable angle (allowing different angles to be installed within a certain range).

[0014] Furthermore, the distance adjusting device includes a fixed part and a movable part, the distance adjusting device seat structure is arranged on the fixed part, and the tool mounting structure is connected to the movable part. A linear guide mechanism is provided between the fixed part and the movable part of the distance adjusting device, for example, a linear guide rail (or a linear guide rail device), and a driving mechanism (driving transmission mechanism) for driving the movable part to move linearly relative to the fixed part is provided, for example, a screw and nut mechanism.

[0015] Furthermore, the mounting plate is connected to the fixture frame in a fixed connection or a movable connection.

[0016] Furthermore, the movable connection is a linear movement connection (allowing relative movement in the extension direction of the tooling frame), a rotational connection (allowing relative rotation with the rotation axis being the extension direction of the tooling frame), or a linear movement and rotational connection (allowing both relative linear movement and relative rotation).

[0017] Preferably, the outer end of the fixed arm is in the shape of a flat plate, and the distance adjusting seat on the distance adjusting device for connecting the fixed arm is in the shape of a plate matching the outer end of the fixed arm, and is fastened to the outer end of the fixed arm by bolts.

[0018] Preferably, the tool installation structure adopts a sleeve, and the connecting portion of the detection tool used for installation on the tool installation structure is in a matching (matching with the corresponding sleeve) column shape, which is inserted into the sleeve of the tool installation structure.

[0019] Preferably, the tool mounting structure adopts a flange, and the connecting portion of the detection tool used for mounting on the tool mounting structure is a matching flange, and is fastened to the flange of the tool mounting structure by bolts.

[0020] The beneficial effects of the present invention are as follows: since a multi-head and multi-directional mounting structure is provided on the tooling frame, and a tool mounting structure for mounting detection tools is provided on the fixed arm of the mounting mechanism, multiple related detection tools can be arranged according to actual needs, and integrated detection or positioning of multiple workstation holes or other structures can be implemented; since a distance adjusting device is provided on the fixed arm, the radial position of the corresponding detection tool can be adjusted according to actual needs; since the installation of the distance adjusting device on the fixed arm can be fixed angle or adjustable angle, the angle of the detection tool can be adjusted according to actual needs, and the overall rotation of the mounting structure can be implemented when necessary; since one or more mounting structures can be arranged according to actual needs, the detection tools required on different planes can be arranged on different mounting structures, thereby realizing integrated detection or positioning of multiple planes; since the spacing between the mounting structures can also be adjusted, the positions of the detected multiple planes can be determined or adjusted according to actual needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic diagram of a multifunctional precision positioning tooling involved in the present invention; Figure 2 is a schematic diagram of a mounting plate involved in the present invention; Figure 3 It is a schematic diagram of another embodiment of the multifunctional precision positioning tooling involved in the present invention.

[0022] Markings in the figure: 10. Tool rack; 20. Mounting plate; 25. Fixed arm; 27. Adjustable hole; 30. Adjustable distance mount; 35. Adjustable distance mount mounting plate; 40. Tool mounting structure; 42. Locking screw; 50. Detection tool; 54. Rotating seat; 61. Grating counter. DETAILED DESCRIPTION

[0023] See also Figure 1-Figure 3 This multifunctional precision positioning tool can be used for the detection / positioning of multi-hole coaxiality, radius, multi-hole positioning, equidistant misalignment, etc. in large-sized workpieces, especially for the detection / positioning of large-sized or heavy objects with high precision requirements that cannot or are not convenient to be moved to multi-coordinate inspection machines, such as the precise positioning on large racks required in manufacturing processes such as multi-workpiece assembly welding or fastening processes. The tool can be equipped with multi-head, multi-directional, and multi-arranged inspection tools (gauges and / or measuring tools, etc.), and the inspection tools can be installed or replaced according to actual needs.

[0024] The tooling frame 10 can be made of a light, non-deformable material. Depending on actual conditions, the tooling frame can be made of a hollow structure to further reduce weight and material consumption.

[0025] The length of the tooling rack is set according to actual needs.

[0026] The tooling frame can adopt a truss structure, and the mounting plate 20 is fixedly mounted on the tooling frame (see Figure 1 When appropriate, the fixed arm 25 can also be directly mounted on the fixture frame. In this case, the mounting plate can be regarded as a corresponding part of the fixture frame and is integrated with the fixture frame.

[0027] The fixture frame can also use a linear guide rail, and the mounting plate is slidably mounted (set in a sleeve manner that allows the mounting plate to slide on the fixture frame) on the linear guide rail used as the fixture frame (see Figure 3 Example), and a positioning device (for example, a top screw, or a positioning pin device) is provided, thereby allowing the position of the mounting plate on the fixture frame to be adjusted, or the distance between the two mounting plates to be adjusted to better adapt to the corresponding measurement requirements.

[0028] The fixed arm extends radially (in a straight line direction passing through the central axis of the tooling frame on a plane perpendicular to the extension direction of the tooling frame), and its inner end is fixedly connected (for example, welded) to the mounting plate, or fixedly connected to the tooling frame (when no independent mounting plate is provided for mounting the relevant fixed arm).

[0029] The fixed arm can be in the shape of a plate or any other suitable shape, and the distance adjusting device (distance adjusting device, or distance adjusting mechanism, or telescopic mechanism) 30 is installed at the outer end of the fixed arm. The telescopic direction of the distance adjusting device (the movement direction of the distance adjusting moving part) is also the radial direction where the corresponding fixed arm is located, so that the radial distance of the detection tool 50 / tool ​​installation structure 40 relative to the tool frame can be adjusted by telescoping (adjusting the distance) of the distance adjusting device.

[0030] The distance adjusting device is provided with a distance adjusting seat 35, which can be in the form of a plate that is adapted to the fixed arm, and can be called a distance adjusting device mounting plate. The distance adjusting device mounting plate is fastened to the end of the fixed arm by corresponding fastening bolts. The end of the fixed arm is provided with a through hole for passing the corresponding fastening bolt. The through hole for the corresponding fastening bolt on the end of the fixed arm can be a circular hole that matches the corresponding bolt, or a larger hole or a strip / arc hole that allows the bolt to change its relative position. For example, in Figure 2 In the example, all the through holes at the end of some fixed arms are round holes that match the bolts, which are used to achieve the fixed connection of the distance adjustment mounting plate. Among the multiple through holes at the end of some fixed arms, one (usually located at the innermost side) is a round hole that matches the bolts, which is used as the axis of angle adjustment (the angle adjustment is performed with the axis of the round hole as the axis), and the remaining through holes (the number can be one or more) are square holes 27 with larger hole diameters (hole cross-sectional areas), and the fastening bolts can move relatively in the square holes, thereby allowing the distance adjustment mounting on the fixed arm to achieve a certain range of angle adjustment to meet actual needs. Other adaptive forms of angle adjustable connection / installation can also be used.

[0031] According to actual needs, the tool installation structure can adopt a sleeve (sleeve), or a flange or other suitable forms. Correspondingly, the connecting part on the detection tool (the part used to connect to the tool installation structure) is cylindrical (can be hollow or solid) matching the sleeve, and is plugged into the sleeve of the tool installation structure. Therefore, it is allowed to determine / adjust the axial relative position / attitude (axial position, angle) of the two according to actual needs. After adjusting the position, tighten the top screw (tightening bolt) 42 set on the side of the sleeve to fix the two. According to actual needs, other fixing / locking methods can also be used; or, the connecting part on the detection tool is a matching flange, and the matching flange on the detection tool is fixedly installed on the flange of the tool installation structure by bolts.

[0032] By standardizing and generalizing the tool installation structure (and the connecting parts on each detection tool), fast and accurate installation or replacement of detection tools can be achieved, facilitating detection operations.

[0033] The mounting plate is provided with a central through hole, which is sleeved on the fixture frame and can be fixed together with the fixture frame (for example, interference fit, welding or clamping / threaded fixing), or can be connected to the fixture frame by sliding connection and / or the tool installation structure. When it is necessary to limit sliding, the mounting plate can be blocked on both sides of the axis by an annular groove, an annular step and a limit nut; when it is necessary to limit rotation, the central through hole on the mounting plate and the section of the fixture frame (the section that matches the central through hole on the mounting plate) can be set to be non-circular. The mounting plate can be fixed on the fixture frame by means of a top screw, a positioning pin device, etc.

[0034] When the mounting plate is allowed to be mounted on the fixture frame, a rotation / angle sensor such as a grating counter can be set to obtain rotation angle data, thereby determining the rotation angle and other related dimensional changes of the detection tool on the fixture frame. When the mounting plate is allowed to move linearly (for example, slide) on the fixture frame, a distance sensor such as a laser rangefinder can be set to obtain movement distance data, thereby determining the axial position change and other related dimensional changes of the detection tool on the fixture frame.

[0035] The detection tool can be stationary (fixed) or a tool installation structure. For example, a rotating seat (rotating bracket) 61 can be provided, thereby determining or adjusting the detection angle / direction according to actual needs.

[0036] The specific form of the testing tool is set or adjusted according to actual needs. The testing tool can be a commercially available product or any other suitable product, such as a trigger probe, a scanning probe, and standard testing shafts and test sleeves of various interchangeable sizes. If necessary, a connecting portion for matching the tool installation structure can be provided on the testing tool based on the tool installation structure.

[0037] Unless otherwise specified or when one preferred or optional technical means is a further limitation of another technical means, the preferred and optional technical means disclosed in the present invention can be arbitrarily combined to form several different specific implementation methods.

Claims

1. A multifunctional precision positioning tool suitable for large-scale hydropower machinery manufacturing equipment, equipped with a tool frame, characterized by The tooling frame is provided with a multi-head and multi-directional mounting structure, which includes a mounting plate sleeved on the tooling frame and a plurality of fixed arms fixedly mounted on the mounting plate, the fixed arms extending radially, the outer end of each fixed arm being connected to a distance adjusting device, and the outer end of each distance adjusting device being provided with a tool mounting structure for mounting detection tools.

2. The multifunctional precision positioning tool as claimed in claim 1, characterized in that The detection tool is any one or more of a trigger probe, a scanning probe, a standard detection test shaft and a standard detection test set.

3. The multifunctional precision positioning tool as claimed in claim 1, characterized in that The tooling frame is in the shape of a long strip.

4. The multifunctional precision positioning tool as claimed in claim 1, characterized in that The number of the multi-head multi-directional installation structures is one or more.

5. The multifunctional precision positioning tool as claimed in claim 1, characterized in that The number of the multi-head multi-directional installation structures is two.

6. The multifunctional precision positioning tool as claimed in claim 1, characterized in that The installation mode of the distance adjustment device on the outer end of the fixed arm is fixed angle installation or adjustable angle installation.

7. The multifunctional precision positioning tool as claimed in claim 1, characterized in that The connection mode of the installation plate on the fixture frame is a fixed connection or a movable connection, and the movable connection is a linear movement connection, a rotation connection, or a linear movement and rotation connection.

8. The multifunctional precision positioning tool as claimed in claim 1, characterized in that The outer end of the fixed arm is in the shape of a flat plate, and the distance adjusting seat on the distance adjusting device for connecting the fixed arm is in the shape of a plate matching the outer end of the fixed arm and is fastened together with the outer end of the fixed arm by bolts.

9. The multifunctional precision positioning tool as claimed in claim 1, characterized in that The tool installation structure adopts a sleeve, and the connecting part of the detection tool used for installation on the tool installation structure is in a matching column shape and is plugged into the sleeve of the tool installation structure.

10. The multifunctional precision positioning tool as claimed in claim 1, characterized in that The tool installation structure adopts a flange, and the connecting part of the detection tool used for installation on the tool installation structure is a matching flange, and is fastened to the flange of the tool installation structure by bolts.

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