Measuring tool for checking the armature shaft of the alternator rotor

Abstract

A measuring tool for detecting an armature shaft of an AC generator rotor comprises a measuring tool body, wherein an axially extending stepped hole is arranged at the center of the measuring tool body, wherein the large diameter section of the stepped hole is a circular hole for matching with the journal of the armature shaft to be measured, and the small diameter section of the stepped hole is a flat hole for matching with the flat square of the armature shaft to be measured, wherein two radially extending gauge block mounting grooves are symmetrically arranged on the end surface of one end of the measuring tool body, wherein the diameters passing through the two gauge block mounting grooves are perpendicular to the two straight sides of the flat hole, and two "L"-shaped gauge blocks are respectively fixedly installed in the gauge block mounting grooves of the measuring tool body, wherein the long arm of the "L"-shaped gauge block is a mounting part fixedly connected with the gauge block mounting groove, and the short arm of the "L"-shaped gauge block is a measuring part extending into the circular hole of the measuring tool body, wherein the thickness of the measuring part matches the keyway depth of the armature shaft to be measured, the width of the measuring part matches the keyway width of the armature shaft to be measured, and the distance between the two measuring parts of the two "L"-shaped gauge blocks is the same as the width between the two straight sides of the flat square of the armature shaft to be measured.

Description

Technical Field

[0001] The invention relates to the technical field of detection of an alternator rotor, and in particular to a measuring tool for detecting an armature shaft of an alternator rotor. Background Art

[0002] The armature shaft is an important part of the AC generator, as the link between the AC generator and the equipment for power conversion. It plays the role of supporting the rotating parts, transmitting torque, and determining the relative position of the rotating parts. The manufacturing accuracy of the armature shaft directly affects the operation effect of the motor. Therefore, the shape and size of the armature shaft must be inspected before leaving the factory. At present, the journal, keyway and flat square at the tail end of the armature shaft require different measuring tools for inspection, that is, the existing measuring tools can only perform one-to-one inspection on the journal, keyway and flat square of the armature shaft. Therefore, in the process of inspecting outsourced parts, it takes a long time, requires a large number of inspection tools and measuring tools, and it also causes certain difficulties in the storage of inspection tools and measuring tools. Summary of the invention

[0003] The purpose of the present invention is to address the deficiencies in the prior art and provide a measuring tool for detecting the armature shaft of an AC generator rotor, which can complete the detection of the journal, keyway and flat square at the tail end of the armature shaft at one time, reduce the number of measuring tools required during the detection process, facilitate the storage of the measuring tools, and greatly improve the detection efficiency.

[0004] The technical solution of the present invention is: a measuring tool for detecting the armature shaft of the rotor of an AC generator, comprising a measuring tool body, wherein the center of the measuring tool body is provided with an axially extending stepped hole, the large diameter section of the stepped hole is a circular hole, and the circular hole is used to match the journal of the armature shaft to be measured, the small diameter section of the stepped hole is a flat hole, and the flat hole is used to match the flat square of the armature shaft to be measured, and the shape of the flat hole is consistent with the cross-sectional shape of the flat square, and two radially extending gauge block mounting grooves are symmetrically provided on the end surface of one end of the measuring tool body, and the gauge block mounting groove is connected to the circular hole of the measuring tool body, and The diameter passing through the two gauge block mounting grooves is perpendicular to the two straight sides of the flat hole. The two "L"-shaped gauge blocks are respectively fixedly installed in the gauge block mounting grooves of the measuring tool body. The long arm of the "L"-shaped gauge block is a mounting part fixedly connected to the gauge block mounting groove, and the short arm of the "L"-shaped gauge block is a measuring part extending into the circular hole of the measuring tool body. The thickness of the measuring part is consistent with the keyway depth of the measured armature shaft, and the width of the measuring part is consistent with the keyway width of the measured armature shaft. The distance between the two measuring parts of the two "L"-shaped gauge blocks is the same as the width between the two straight sides of the flat square of the measured armature shaft.

[0005] Furthermore, the measuring tool body is stepped, the circular hole is located in the large diameter section of the measuring tool body, and the gauge block mounting groove is located on the end surface of the large diameter section of the measuring tool body.

[0006] Furthermore, the measuring tool body is provided with a first screw hole, and the mounting portion of the "L"-shaped gauge block is provided with a second screw hole, and the measuring tool body and the "L"-shaped gauge block are connected and fixed by inserting bolts into the first screw hole and the second screw hole.

[0007] Furthermore, two second screw holes are provided on the mounting portion of the "L"-shaped gauge block, and two first screw holes corresponding to the second screw holes are symmetrically provided on both sides of the measuring tool body.

[0008] The above technical solution is adopted: an axially extending stepped hole is provided in the center of the measuring tool body, the large diameter section of the stepped hole is a circular hole, the circular hole is used to cooperate with the journal of the armature shaft to be measured, and the journal size and shape of the armature shaft to be measured are detected, the small diameter section of the stepped hole is a flat hole, the flat hole is used to cooperate with the flat square of the armature shaft to be measured, the shape of the flat hole is consistent with the cross-sectional shape of the flat square, and the size and shape of the flat square of the armature shaft to be measured are detected. Two radially extending gauge block installation grooves are symmetrically provided on the end surface of one end of the measuring tool body, the gauge block installation groove is connected to the circular hole of the measuring tool body, so that the "L"-shaped gauge block can be symmetrically installed in the gauge block installation groove, and the diameter passing through the two gauge block installation grooves is perpendicular to the two straight sides of the flat hole, so that the two gauge block installation grooves correspond to the centers of the two straight sides of the flat hole respectively. Two "L"-shaped gauge blocks are respectively fixedly installed in the gauge block mounting grooves of the measuring tool body. The long arm of the "L"-shaped gauge block is a mounting part fixedly connected to the gauge block mounting groove, and the short arm of the "L"-shaped gauge block is a measuring part extending into the circular hole of the measuring tool body. The keyway of the measured armature shaft can be detected by the "L"-shaped gauge block. Since the keyway opening of the measured armature shaft corresponds to the plane of the flat square, after the "L"-shaped gauge block is assembled on the measuring tool body, the measuring part of the "L"-shaped gauge block extending into the circular hole and the two straight sides of the flat hole are on the same axis, which can realize the detection of whether the keyway opening of the measured armature shaft is consistent with the plane of the flat square. The thickness of the measuring part matches the keyway depth of the measured armature shaft, and the keyway depth of the measured armature shaft can be detected through the measuring part. The width of the measuring part matches the keyway width of the measured armature shaft, and the keyway width of the measured armature shaft can be detected through the measuring part. The distance between the two measuring parts of the two "L"-shaped gauge blocks is the same as the width between the two straight sides of the flat square of the measured armature shaft, so that the "L"-shaped gauge block can detect the symmetry, size and shape of the keyway of the measured armature shaft, and the flat hole of the measuring tool body and the "L"-shaped gauge block can be used together to detect whether the keyway opening of the measured armature shaft is consistent with the plane of the flat square.

[0009] The measuring tool body is stepped, the circular hole is located in the large diameter section of the measuring tool body, and the gauge block mounting groove is located on the end surface of the large diameter section of the measuring tool body, which can save manufacturing materials and reduce enterprise production costs.

[0010] The measuring tool body is provided with a first screw hole, and the mounting portion of the "L"-shaped gauge block is provided with a second screw hole. The measuring tool body and the "L"-shaped gauge block are connected and fixed by inserting bolts into the first screw hole and the second screw hole. The "L"-shaped gauge block and the measuring tool body are connected and fixed by bolts, which is convenient for assembly and can ensure connection reliability. It is also convenient for disassembly when repairing and replacing parts.

[0011] The mounting portion of the "L"-shaped gauge block is provided with two second screw holes, and two first screw holes corresponding to the second screw holes are symmetrically provided on both sides of the gauge body, thereby ensuring the connection reliability between the "L"-shaped gauge block and the gauge body.

[0012] When the present invention is used, two "L"-shaped gauge blocks are assembled on the measuring tool body to form an integral measuring tool. When the shape, size and symmetry of the journal, keyway and flat square of the armature shaft to be measured meet the production requirements, the measuring tool can be smoothly mounted on the armature shaft to be measured. Otherwise, if the measuring tool is blocked during the mounting process and cannot be smoothly mounted on the armature shaft to be measured, it means that the armature shaft to be measured does not meet the production requirements. Therefore, the use of the measuring tool can complete the detection of the three structures of the journal, keyway and flat square of the armature shaft to be measured at one time, which can reduce the number of measuring tools in the detection process, and the detection can be completed by only mounting the measuring tool on the armature shaft to be measured. The detection method is simple and fast, which can greatly improve the detection efficiency. At the same time, the "L"-shaped gauge block and the measuring tool body can be assembled together for storage, which is convenient for the factory to store and store the measuring tools and reduce the tool loss rate of the factory.

[0013] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 is a cross-sectional view of the measuring tool body of the present invention;

[0016] Figure 3 A top view of the measuring tool body of the present invention;

[0017] Figure 4 It is a structural schematic diagram of an "L"-shaped gauge block of the present invention;

[0018] Figure 5 It is a schematic diagram of the detection cooperation between the present invention and the armature shaft to be tested;

[0019] Figure 6 It is a schematic diagram of the structure of the armature shaft under test. DETAILED DESCRIPTION

[0020] See also Figures 1 to 6A measuring tool for detecting an armature shaft of an AC generator rotor comprises a measuring tool body 1, wherein an axially extending stepped hole is provided at the center of the measuring tool body 1, wherein a large diameter section of the stepped hole is a circular hole 2, wherein the circular hole 2 is used to cooperate with a journal 4-2 of the armature shaft to be measured, and the size and shape of the journal 4-2 of the armature shaft to be measured are detected, and a small diameter section of the stepped hole is a flat hole 3, wherein the flat hole 3 is used to cooperate with a flat square 4-1 of the armature shaft to be measured, and the shape of the flat hole 3 is consistent with the cross-sectional shape of the flat square 4-1, and the size and shape of the flat square 4-1 of the armature shaft to be measured are detected. The end surface of one end of the measuring tool body 1 is symmetrically provided with two radially extending gauge block installation grooves 5, through which the assembly position of the "L"-shaped gauge block 6 can be positioned, the gauge block installation groove 5 is connected with the circular hole 2 of the measuring tool body 1, and the diameter passing through the two gauge block installation grooves 5 is perpendicular to the two straight sides of the flat hole 3, that is, the two gauge block installation grooves 5 are respectively located on the same side as the two straight sides of the flat hole 3, and the radial center axis of the gauge block installation groove 5 corresponds to the center of the straight side of the flat hole 3. The measuring tool body 1 is stepped, the circular hole 2 is located in the large diameter section of the measuring tool body 1, the flat hole 3 is located in the small diameter section of the measuring tool body 1 and extends to the large diameter section to communicate with the circular hole 2, and the gauge block installation groove 5 is located on the end face of the large diameter section of the measuring tool body 1, which can save manufacturing materials and reduce the production cost of the enterprise. Two "L"-shaped gauge blocks 6 are respectively fixedly installed in the gauge block installation groove 5 of the gauge body 1, so that the two "L"-shaped gauge blocks 6 can be symmetrically installed in the gauge block installation groove 5, the long arm of the "L"-shaped gauge block 6 is the installation part 6-1 fixedly connected to the gauge block installation groove 5, and the short arm of the "L"-shaped gauge block 6 is the measuring part 6-2 extending into the circular hole 2 of the gauge body 1, and the keyway 4-3 of the armature shaft 4 to be measured can be detected by the "L"-shaped gauge block 6. After the "L"-shaped gauge block 6 is assembled on the gauge body 1, the measuring part 6-2 extending into the circular hole 2 and the two straight sides of the flat hole 3 are on the same axis, so that the axial extension line of the measuring part 6-2 corresponds to the center of the straight side of the flat hole 3. Since the opening of the keyway 4-3 of the armature shaft 4 to be measured corresponds to the plane of the flat square 4-1, it is possible to detect whether the opening of the keyway 4-3 of the armature shaft 4 to be measured is consistent with the plane of the flat square 4-1 through the "L"-shaped gauge block 6 and the gauge body 1. The thickness of the measuring portion 6-2 of the "L"-shaped gauge block 6 is consistent with the depth of the keyway 4-3 of the armature shaft to be measured, and the depth of the keyway 4-3 of the armature shaft to be measured can be detected by the measuring portion 6-2. The width of the measuring portion 6-2 is consistent with the width of the keyway 4-3 of the armature shaft to be measured, and the width of the keyway 4-3 of the armature shaft to be measured can be detected by the measuring portion 6-2. The distance between the two measuring portions 6-2 of the two "L"-shaped gauge blocks 6 is the same as the width between the two straight sides of the flat square 4-1 of the armature shaft to be measured, so that the "L"-shaped gauge block 6 can detect the symmetry, size and shape of the keyway 4-3 of the armature shaft to be measured, and the flat hole of the measuring tool body 1 and the "L"-shaped gauge block 6 are used together to detect whether the opening of the keyway 4-3 of the armature shaft 4 to be measured is consistent with the plane of the flat square 4-1.

[0021] The measuring tool body 1 is provided with a first screw hole 1-1, and the first screw hole 1-1 is a countersunk hole, and the mounting portion 6-1 of the "L"-shaped gauge block 6 is provided with a second screw hole 6-3. The measuring tool body 1 is connected and fixed with the "L"-shaped gauge block 6 by inserting a bolt 7 into the first screw hole 1-1 and the second screw hole 6-3, so that the "L"-shaped gauge block 6 and the measuring tool body 1 are connected and fixed by the bolt 7, which is convenient for assembly and can ensure the connection reliability, and is also convenient for disassembly when repairing and replacing parts. Moreover, two second screw holes 6-3 can be set on the mounting portion 6-1 of the "L"-shaped gauge block 6, and two first screw holes 1-1 are symmetrically provided on both sides of the measuring tool body 1, corresponding to the second screw holes 6-3, to enhance the connection reliability of the "L"-shaped gauge block 6 and the measuring tool body 1. When the measuring tool body 1 is stepped, the first screw hole 1-1 is set on the large diameter section of the measuring tool body 1, so that the measuring tool body 1 and the "L"-shaped gauge block 6 can be fixed with a shorter bolt 7, making the assembly simpler and more convenient.

[0022] When the present invention is used, firstly, two "L"-shaped gauge blocks 6 are symmetrically assembled on the gauge body 1, so that the "L"-shaped gauge blocks 6 and the gauge body 1 form an integral gauge, and then the gauge is mounted on the tail end of the armature shaft 4 to be measured from the flat square 4-1 of the armature shaft 4 to be measured. When the shape, size and symmetry of the journal 4-2, keyway 4-3 and flat square 4-1 of the armature shaft 4 to be measured meet the production requirements, the armature shaft to be measured can be smoothly inserted into the gauge using the gauge. Otherwise, if the gauge is blocked during the mounting process and cannot be smoothly mounted on the armature shaft 4 to be measured, it means that the armature shaft 4 to be measured does not meet the production requirements.

[0023] In summary, the use of this measuring tool can complete the detection of the three structures of the journal 4-2, keyway 4-3, and flat square 4-1 of the armature shaft 4 to be tested at one time, which can reduce the number of measuring tools required in the detection process, and the detection can be completed by simply putting this measuring tool on the armature shaft 4 to be tested. The detection method is simple and fast, which is convenient for large-scale detection of armature shafts, and can greatly improve the detection efficiency and detection accuracy. At the same time, the "L"-shaped gauge block 6 and the measuring tool body 1 can be assembled together for storage, which is convenient for the factory to store the measuring tools and reduce the tool loss rate in the factory.

Claims

1. A measuring tool for detecting the armature shaft of an AC generator rotor, characterized in that: The measuring tool comprises a measuring tool body (1), wherein the measuring tool body (1) is provided with an axially extending stepped hole at its center, wherein the large diameter section of the stepped hole is a circular hole (2), wherein the circular hole (2) is used to cooperate with the journal (4-2) of the armature shaft (4) to be measured, and the small diameter section of the stepped hole is a flat hole (3), wherein the flat hole (3) is used to cooperate with the flat square (4-1) of the armature shaft (4) to be measured, wherein the shape of the flat hole (3) is consistent with the cross-sectional shape of the flat square (4-1), and wherein two radially extending gauge block mounting grooves (5) are symmetrically provided on one end surface of the measuring tool body (1), wherein the gauge block mounting grooves (5) are connected to the circular hole (2) of the measuring tool body (1), and the diameters passing through the two gauge block mounting grooves (5) are perpendicular to the two straight sides of the flat hole (3). The two "L"-shaped gauge blocks (6) are respectively fixedly mounted in the gauge block mounting groove (5) of the gauge body (1); the long arm of the "L"-shaped gauge block (6) is a mounting portion (6-1) fixedly connected to the gauge block mounting groove (5); the short arm of the "L"-shaped gauge block (6) is a measuring portion (6-2) extending into the circular hole (2) of the gauge body (1); the thickness of the measuring portion (6-2) matches the depth of the keyway (4-3) of the armature shaft (4) to be measured; the width of the measuring portion (6-2) matches the width of the keyway (4-3) of the armature shaft (4) to be measured; and the distance between the two measuring portions (6-2) of the two "L"-shaped gauge blocks (6) is the same as the width between the two straight sides of the flat square (4-1) of the armature shaft (4) to be measured.

2. The measuring tool for detecting the armature shaft of the AC generator rotor according to claim 1, characterized in that: The measuring tool body (1) is in a stepped shape, the circular hole (2) is located in the large diameter section of the measuring tool body (1), and the gauge block mounting groove (5) is located on the end surface of the large diameter section of the measuring tool body (1).

3. The measuring tool for detecting the armature shaft of the AC generator rotor according to claim 1, characterized in that: The measuring tool body (1) is provided with a first screw hole (1-1), and the mounting portion (6-1) of the "L"-shaped gauge block (6) is provided with a second screw hole (6-3). The measuring tool body (1) and the "L"-shaped gauge block (6) are connected and fixed by inserting bolts (7) into the first screw hole (1-1) and the second screw hole (6-3).

4. The measuring tool for detecting the armature shaft of the AC generator rotor according to claim 3, characterized in that: Two second screw holes (6-3) are provided on the mounting portion (6-1) of the "L"-shaped gauge block (6), and two first screw holes (1-1) corresponding to the second screw holes (6-3) are symmetrically provided on both sides of the gauge body (1).

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