A spindle boring tool

Abstract

The utility model belongs to water turbine main shaft processing technical field, and disclose a kind of main shaft boring mould tool, including main shaft side template, rotor support side template and template adjusting block, the surface of main shaft side template and rotor support side template is annular and is provided with screw hole and positioning pin hole, the inside thread connection of main shaft side template screw hole has bolt assembly;Through the size of main shaft side template and rotor support side template is set according to the actual situation of main shaft two end flange, to ensure the adaptability with main shaft and relevant components, through the assembly positioning of main shaft side template and rotor support side template and relevant components are done with cooperation tolerance, to further improve the accuracy of overall installation, subsequently, through the setting of template adjusting block and adjusting bolt, to correct the boring template of main shaft and runner body coupling hole, to effectively improve the efficiency and quality of water turbine main shaft and relevant components positioning pin processing.

Description

Technical Field

[0001] This utility model belongs to the field of turbine main shaft machining technology, specifically a main shaft boring tool. Background Technology

[0002] In the manufacturing process of water turbines, the main shaft is a key component, and the connection accuracy between it and other components such as the runner and rotor support directly affects the overall performance and operational stability of the water turbine. Therefore, the machining of the locating pins between the main shaft and these components is a crucial step in ensuring the connection accuracy.

[0003] Currently, existing machining tools and methods for machining spindle connecting pin holes have many shortcomings. Traditional machining methods often lack efficient and precise tools specifically designed for machining locating pins of components such as spindles, impellers, and rotor supports. During machining, it is difficult to guarantee the positional and dimensional accuracy of the locating pin holes, which may lead to problems such as loose fit and inaccurate positioning during assembly, thus affecting the assembly quality and operating efficiency of the turbine. Furthermore, traditional machining methods are complex to operate, requiring multiple clamping and adjustments, which not only increases machining time and labor intensity but also easily introduces machining errors, seriously affecting production progress. Therefore, a spindle boring tool is proposed to solve the problems mentioned in the background technology. Utility Model Content

[0004] To address the problems mentioned in the background section, this invention provides a spindle boring tool, which has the advantages of improving the machining efficiency and quality of locating pins for turbine spindles and related components.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a spindle boring tool, comprising a spindle side template, a rotor support side template, and a template adjustment block. The surfaces of the spindle side template and the rotor support side template are circumferentially provided with screw holes and positioning pin holes. The screw holes of the spindle side template are internally threaded with bolt assemblies, and the positioning pin holes of the spindle side template are internally installed with tapered pins.

[0006] Preferably, the spindle side template is fixedly connected to the rotor support side template by a number of bolt assemblies, and the spindle side template is positioned by a tapered pin.

[0007] Preferably, one end of the template adjusting block is provided with an adjusting bolt, and the template adjusting block is threadedly connected to the rotor support side template through the adjusting bolt.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] This invention ensures compatibility with the main shaft and related components by setting the dimensions of the main shaft side template and rotor support side template according to the actual situation of the flanges at both ends of the main shaft. This allows for precise installation and positioning of the boring tool. After the main shaft side template and rotor support side template are assembled and positioned, they are fitted with the related components to meet tolerances, thereby further improving the overall installation accuracy. Subsequently, by setting the template adjustment block and adjusting bolt, the boring template for the connection hole between the main shaft and the runner body is corrected, thereby more accurately machining the positioning pin holes on the main shaft and rotor support. This effectively improves the efficiency and quality of machining the positioning pins of the turbine main shaft and related components. Attached Figure Description

[0010] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0011] Fig. 2 This is a side sectional view of the present invention.

[0012] Fig. 3 This is an enlarged view of the structure of the template adjustment block of this utility model.

[0013] In the diagram: 1. Main shaft side template; 2. Rotor support side template; 3. Template adjustment block; 4. Bolt assembly. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] like Figs. 1-3 As shown, this utility model provides a spindle boring tool, including a spindle side template 1, a rotor support side template 2, and a template adjustment block 3. The surfaces of the spindle side template 1 and the rotor support side template 2 are both circumferentially provided with screw holes and positioning pin holes. The screw holes of the spindle side template 1 are internally threaded with bolt assemblies 4, and the positioning pin holes of the spindle side template 1 are internally installed with tapered pins.

[0016] like Figs. 1-3 As shown, the spindle side template 1 is fixedly connected to the rotor support side template 2 by several bolt assemblies 4. The spindle side template 1 is positioned to the rotor support side template 2 by tapered pins. One end of the template adjustment block 3 is provided with an adjustment bolt, and the template adjustment block 3 is threadedly connected to the rotor support side template 2 by the adjustment bolt.

[0017] The above scheme is adopted: the outer diameter, screw hole and positioning pin size of the spindle side template 1 and rotor support side template 2 are all determined by the diameter of the flanges at both ends of the spindle being machined and the distribution of the connecting screw holes and positioning pins. The outer diameter of the spindle side template 1 and rotor support side template 2 is similar to the diameter of the spindle flange. At the same time, the size of the screw holes and positioning pin holes on the surface of the spindle side template 1 is consistent with the screw holes and positioning pin holes on the flanges at both ends of the spindle being machined.

[0018] The working principle and usage process of this utility model are as follows: During use, the spindle side template 1 and the rotor support side template 2 are aligned, and the two are assembled and positioned using several bolt assemblies 4 and tapered pins. Subsequently, the end faces of the two ends of the spindle side template 1 and the rotor support side template 2 are respectively connected to the spindle and the wheel, rotor support or other components assembled with the spindle with it, and the dimensions are matched with tolerance.

[0019] After disassembling the boring tool, install the spindle and spindle side template 1 into the spindle and fix them with bolt assembly 4 respectively. Then, by adjusting the adjusting bolts in the middle of the four template adjusting blocks 3 respectively, the outer circle of the spindle side template 1 is aligned with the outer circle of the spindle and corrected with a dial indicator. Then, the spindle and spindle side template 1 are corrected. Finally, the positioning pin holes are drilled and reamed.

[0020] Similarly, the four template adjustment blocks 3 are then connected to the rotor support side template 2 by adjusting bolts, and the outer circle of the rotor support side template 2 is aligned with the outer circle of the rotor support by adjusting the bolt in the middle of the four template adjustment blocks 3. Finally, the alignment is corrected with a dial indicator, and then the positioning pin holes are drilled and reamed. Through this series of operations, the positioning pin holes on the spindle and rotor support can be processed more conveniently and accurately.

[0021] It is worth noting here that during the processing of the main shaft side template 1 and the rotor support side template 2, the screw holes and locating pin holes need to be scribed and machined first. The locating pin holes should be 2 mm larger than the locating pin size of the turbine main shaft. After the machining is completed, the bolt assembly 4 and the tapered pin are installed. Then, the outer circle is corrected with the stop as the reference. Finally, the tapered pin holes are precision bored, and hole number marks are made on both sides of the main shaft side template 1 and the rotor support side template 2 respectively.

[0022] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spindle boring tool, comprising a spindle-side template (1), a rotor support-side template (2), and a template adjustment block (3), characterized in that: Both the main shaft side template (1) and the rotor support side template (2) are provided with screw holes and positioning pin holes in an annular shape. The screw holes of the main shaft side template (1) are connected to bolt assemblies (4) by threads, and the positioning pin holes of the main shaft side template (1) are installed with tapered pins.

2. The spindle boring tool according to claim 1, characterized in that: The main shaft side template (1) is fixedly connected to the rotor support side template (2) by a number of bolt assemblies (4), and the main shaft side template (1) is positioned to the rotor support side template (2) by a tapered pin.

3. The spindle boring tool according to claim 1, characterized in that: One end of the template adjustment block (3) is provided with an adjustment bolt, and the template adjustment block (3) is threadedly connected to the rotor support side template (2) through the adjustment bolt.

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