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 and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the multifunctional precision positioning tooling suitable for the large -scale machinery manufacturing equipment of hydroelectric generation. BACKGROUND

[0002] The mechanical manufacturing industry, such as large-scale mechanical manufacturing equipment for hydroelectric power generation, often involves detection / positioning of multi-hole coaxiality, radius, multi-hole positioning, and equidistance misalignment. The current relatively accurate detection equipment is a three-coordinate measuring instrument. The workpiece is placed on the workbench of the measuring instrument, and the detection tool is moved to the required detection points for measurement by using the three-dimensional moving mechanism on the measuring instrument, thereby obtaining the corresponding detection data. For example, Chinese patent document CN108571939A discloses a positioning device and a three-coordinate measuring instrument. The positioning device includes three positioning parts, which are fixed on the workbench. The three positioning parts are distributed in a triangular shape on the workbench and match the shape of the surface of the product. By simultaneously contacting the surface of the product with the three positioning parts, the product can be fixed at a predetermined position on the workbench determined by the three positioning parts. After the position of the product is fixed, subsequent processing of the product can be performed, and the subsequent processing process is simplified. The three-coordinate measuring instrument includes a measuring instrument body and the above-mentioned positioning device, which is fixed on the workbench of the measuring instrument body. When using the three-coordinate measuring instrument to measure the three-dimensional size of the product multiple times, the product can be positioned by the positioning device without the need to establish a measurement coordinate system each time. Chinese patent document CN113865534A discloses a three-coordinate measuring instrument, which includes a three-coordinate measuring instrument body, a bottom plate, an adjusting mechanism, and a motor. The three-coordinate measuring instrument body is in sliding fit with the bottom plate in the vertical direction. The adjusting mechanism is symmetrically arranged on the bottom plate and located between the bottom plate and the three-coordinate measuring instrument body. The adjusting mechanism includes a worm gear, a worm, an adjusting rod, and an adjusting wheel. The worm is connected to the bottom plate by a tool mounting structure. The worm gear is connected to the bottom plate by a tool mounting structure. The worm gear is in mesh with the worm. One end of the adjusting rod is connected to the worm gear, and the other end is connected to the tool mounting structure of the adjusting wheel. The adjusting wheel abuts against the three-coordinate measuring instrument body. The motor is arranged on the bottom plate and linked with the worm. The tool mounting structure directions of the adjusting rods in the symmetrically arranged adjusting mechanisms are opposite, thereby adapting to the operating height requirements of operators of different heights. Chinese patent document CN108895953A discloses a contact detection tool, a three-coordinate measuring machine, and a tool setting instrument. The contact detection tool uses a ball column structure or a spring sheet as a support reset method and uses a grating or a Hall device as a displacement information detection device (including detecting the direction and size of the end displacement). The contact detection tool can more accurately perform error compensation, improve anisotropy, and improve measurement accuracy. These existing technologies have their own characteristics and are suitable for their respective occasions, but 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 and cannot measure large-size workpieces or heavy workpieces in large-scale mechanical manufacturing for hydroelectric power generation. It is also impossible to measure or position during the manufacturing process as needed. If errors are found after the equipment is completed, it needs to be returned to work and reworked, which has a high error correction cost.

[0003] On the other hand, in practice, portable laser detectors or manual tools can also be used for manual measurement, and the required data can be calculated according to geometric principles, but the accuracy and accuracy of these detection results are relatively low, the dependence on the personal experience and skills of the operating personnel is strong, and the time consumed is also relatively high. Practical new type content

[0004] The utility model aims at providing a multifunctional precise positioning tool convenient to use to adapt to the corresponding needs of large mechanical manufacturing equipment such as hydroelectric power generation.

[0005] The technical scheme of the utility model is: a multifunctional precise positioning tool for large mechanical manufacturing equipment of hydroelectric power generation is provided with a tool frame, a multi-head multi-direction mounting structure is arranged on the tool frame, the multi-head multi-direction mounting structure comprises a mounting disc sleeved on the tool frame and a plurality of fixed arms fixedly mounted on the mounting disc, the fixed arms extend radially, the outer ends of the fixed arms are all connected with distance adjusting devices, and the outer ends of the distance adjusting devices are all provided with tool mounting structures for mounting detection tools.

[0006] Preferably, the tool frame is a non-deformable metal frame with light weight (the density should be less than that of ordinary carbon steel plate / stainless steel plate).

[0007] Preferably, the fixed arms are arranged at equal angles or are arranged according to actual detection / positioning requirements.

[0008] Further, the detection tools are any one or more of a trigger type probe, a scanning type probe, a standard detection shaft and a standard detection sleeve.

[0009] The detection tools mounted on different fixed arms can be the same or different.

[0010] Preferably, the tool frame is in the shape of an elongated strip, for example, an elongated column (for example, a circular column or a non-circular column).

[0011] The number of the multi-head multi-direction mounting structures can be one or more.

[0012] Preferably, the number of the multi-head multi-direction mounting structures is two.

[0013] Further, a certain spacing or adjustable spacing is left between the two multi-head multi-direction mounting structures.

[0014] Further, the mounting mode of the distance adjusting device on the outer end of the fixed arm is fixed angle (angle in the plane perpendicular to the extension direction of the tool frame) mounting, or adjustable angle mounting (allowing the mounting mode with different angles within a certain range).

[0015] Further, the distance adjusting device comprises a fixed part and a movable part, a distance adjusting device seat is arranged on the fixed part, and a tool mounting structure is connected to the movable part, a linear guide mechanism, such as a linear guide rail (or linear guide rail device), is arranged between the fixed part and the movable part of the distance adjusting device, and a driving mechanism (driving transmission mechanism) for driving the movable part to move linearly relative to the fixed part, such as a screw nut mechanism, is arranged.

[0016] Further, the mounting disc is fixedly connected to the tool rack or is movably connected to the tool rack.

[0017] Further, the movable connection is linear movement (allowing relative movement in the extension direction of the tool rack), rotation (allowing relative rotation of the rotation axis in the extension direction of the tool rack), or linear movement and rotation (allowing relative linear movement and relative rotation).

[0018] Preferably, the outer end of the fixed arm is in the form of a flat plate, the distance adjusting device seat for connecting the fixed arm on the distance adjusting device is in the form of a plate matched with the outer end of the fixed arm, and is fastened to the outer end of the fixed arm by bolts.

[0019] Preferably, the tool mounting structure is in the form of a sleeve, and the connecting part for mounting on the tool mounting structure on the detection tool is in the form of a matched column, which is inserted into the sleeve serving as the tool mounting structure.

[0020] Preferably, the tool mounting structure is in the form of a flange, and the connecting part for mounting on the tool mounting structure on the detection tool is in the form of a matched flange, which is fastened to the flange serving as the tool mounting structure by bolts.

[0021] The beneficial effects of the utility model are as follows: because the multi-head multi-direction mounting structure is arranged on the tool rack, and the tool mounting structure for mounting the detection tool is arranged on the fixed arm of the mounting mechanism, a plurality of detection tools can be arranged according to actual needs, and integrated detection or positioning of a plurality of workpiece holes or other structures can be implemented; because the distance adjusting device is arranged on the fixed arm, the radial position of the corresponding detection tool can be adjusted according to actual needs; because 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 needed; because 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, and thus integrated detection or positioning of multiple planes can be realized; because the spacing of the mounting structures can also be adjusted, the positions of the multiple planes to be detected can be determined or adjusted according to actual needs. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1is a schematic view of the multifunctional precision positioning tool of the utility model;

[0023] Figure 2 is a schematic view of the mounting disc of the utility model;

[0024] Figure 3 is a schematic view of another embodiment of the multifunctional precision positioning tool of the utility model.

[0025] In the figure, 10 is a tool frame, 20 is a mounting disc, 25 is a fixed arm, 27 is an adjustable hole, 30 is a distance adjusting device, 35 is a distance adjusting device mounting plate, 40 is a tool mounting structure, 42 is a locking screw, 50 is a detection tool, 54 is a rotating seat, and 61 is a grating counter. DETAILED DESCRIPTION

[0026] Referring to Figures 1-3 , the multifunctional precision positioning tool can be used for detection / positioning of multi-hole coaxiality, radius, multi-hole positioning, equidistance misplacement, etc. of large-size workpieces, especially detection / positioning of large-size or heavy workpieces that cannot or are inconvenient to be moved to a multi-coordinate detection machine tool, such as precision positioning on a large rack required in a manufacturing process such as multi-workpiece assembly welding or fastening process. The tool can be provided with multi-head, multi-direction, multi-arrangement detection tools (gauges and / or measuring tools, etc.), which can be installed or replaced according to actual needs.

[0027] The tool frame 10 can be made of light-weight non-deformable material. According to actual conditions, the tool frame can adopt a hollow structure to further reduce weight and material consumption.

[0028] The length of the tool frame is set according to actual needs.

[0029] The tool frame can adopt a truss structure to fix and install the mounting disc 20 on the tool frame (see Figure 1 Examples). When appropriate, the fixed arm 25 can also be directly installed on the tool frame, in which case the mounting disc can be considered as adopting the corresponding part of the tool frame and being integrated with the tool frame.

[0030] The tool frame can also adopt a linear guide rail, and the mounting disc is slidably sleeved (a sleeving manner allowing the mounting disc to slide on the tool frame) on the linear guide rail serving as the tool frame (see Figure 3 Examples), and is provided with a positioning device (for example, a jackscrew or a positioning pin device), thereby allowing the position of the mounting disc on the tool frame to be adjusted or the distance between two mounting discs to be adjusted to better adapt to the corresponding measurement requirements.

[0031] The fixed arm extends radially (in a straight line 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 for mounting the relevant fixed arm is provided).

[0032] The fixed arm can be plate-shaped or any other suitable shape. The distance-adjusting device (also called a distance-adjusting mechanism or telescopic mechanism) 30 is mounted on the outer end of the fixed arm. The distance-adjusting device's telescopic direction (the direction of movement of the distance-adjusting moving element) is also radially aligned with the fixed arm. Thus, the distance between the testing tool 50 / tool ​​mounting structure 40 and the fixture frame can be adjusted by adjusting the distance-adjusting device's telescopic (distance-adjusting) direction.

[0033] The distance adjustment device is provided with a distance adjustment seat 35. The distance adjustment seat can be in the form of a plate that is adapted to the fixed arm and can be called a distance adjustment mounting plate. The distance adjustment 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 through-holes at the ends of some fixed arms are circular holes that match the bolts and are used to securely connect the adjustable spacer mounting plate. Of the multiple through-holes at the ends of some fixed arms, one (typically located on the innermost side) is a circular hole that matches the bolts and serves as the axis for angle adjustment (angle adjustment is performed with the axis of this circular hole as the axis). The remaining through-holes (which may be one or more) are square holes 27 with larger diameters (cross-sectional areas). The fastening bolts can move relative to each other within the square holes, thereby allowing the adjustable spacer mounting plate to be adjusted within a certain range of angles on the fixed arm to meet actual needs. Other suitable forms of angle-adjustable connection / mounting may also be used.

[0034] Depending on actual needs, the tool mounting structure can adopt a sleeve (tube), a flange, or other suitable form. Accordingly, the connecting portion on the testing tool (the portion used to connect to the tool mounting structure) is cylindrical (can be hollow or solid) and compatible with the sleeve, plugging into the sleeve of the tool mounting structure. This allows the relative axial position / attitude (axial position, rotational angle) of the two to be determined / adjusted according to actual needs. After adjusting the position, tighten the top screw (tightening bolt) 42 provided on the side of the sleeve to secure the two. Other fixing / locking methods can also be used depending on actual needs; alternatively, the connecting portion on the testing tool can be a matching flange, which is fixed to the flange of the tool mounting structure by bolts.

[0035] Through standardization and universalization of the tool mounting structure (and the connecting part on each detection tool), quick and accurate detection tool installation or replacement can be realized, and detection operation is facilitated.

[0036] The mounting disc is provided with a central through hole, is sleeved on the tool holder, and can be fixed together with the tool holder (for example, interference fit, welding or clamping / threaded fixing), can be in sliding connection with the tool holder and / or in connection with the tool mounting structure. When it is necessary to limit sliding, the axial two sides of the mounting disc can be blocked by a ring groove, a ring step and a limiting nut, etc. When it is necessary to limit rotation, the central through hole on the mounting disc and the cross section of the tool holder (the cross section matched with the central through hole on the mounting disc) can be set as non-circular. The position of the mounting disc on the tool holder can be fixed by a jackscrew, a positioning pin device, etc.

[0037] When the mounting disc is allowed to move linearly (for example, slide) on the tool holder, a distance sensor such as a laser range finder can be arranged to obtain movement distance data, and then the axial position change of the detection tool on the tool holder and other related size changes can be determined.

[0038] The detection tool can be immovable (fixed) or in the form of the tool mounting structure. For example, a rotating seat (rotating support) 61 can be arranged, so that the angle / direction of detection can be determined or adjusted according to actual needs.

[0039] The specific form of the detection tool can be set or adjusted according to actual needs. The detection tool can adopt a commercially available product or any other suitable product, for example, a trigger type probe, a scanning type probe and various size adjustable standard detection shafts and test sets. If necessary, a connecting part for matching with the tool mounting structure can be arranged on the detection tool according to the tool mounting structure.

[0040] The various preferred and optional technical means disclosed in the utility model can be combined arbitrarily to form several different specific embodiments, except for the specific description and the further limitation of one preferred or optional technical means by another technical means.

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 extend radially, and the outer ends of the fixed arms are connected to distance adjusting devices. The outer ends of the distance adjusting devices are provided with a tool mounting structure for mounting detection tools. The tooling frame is a lightweight, non-deformable metal frame.

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 sleeve.

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

4. The multifunctional precision positioning tool as claimed in claim 1, characterized in that The number of the multi-head multi-directional installation structure 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 angle adjustable installation.

7. The multifunctional precision positioning tool as claimed in claim 1, characterized in that The connection mode of the mounting 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 to 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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