Anti-interference structure for a rotor measuring machine

Abstract

The utility model provides a rotor measuring machine is with anti -interference structure belongs to rotor measurement technical field, including base, be located fixed base top's fixed base, the both sides support board of symmetry be located fixed base top, the step motor of being located two both sides support board one side outer wall respectively, the semicircle coil cover no.

Description

Technical Field

[0001] This utility model belongs to the field of rotor measurement technology, specifically relating to an anti-interference structure for a rotor measuring machine. Background Technology

[0002] Rotor measuring machines are used to measure data such as rotor diameter and runout.

[0003] Because the rotor contains a strong magnet, the measurement accuracy is affected by the rotor's magnetic field when measuring the rotor with a measuring machine, which in turn causes errors in the relevant measurement data and results in low accuracy.

[0004] Therefore, an anti-interference structure for a rotor measuring machine is proposed. Summary of the Invention

[0005] This invention provides an anti-interference structure for a rotor measuring machine, the purpose of which is to solve the problems mentioned above.

[0006] This utility model provides an anti-interference structure for a rotor measuring machine, including a base; a fixed seat on the top of the base; two side support plates symmetrically arranged on the top of the fixed seat; stepper motors respectively disposed on the outer wall of one side of the two side support plates; a semi-circular coil cover one and a semi-circular coil cover two respectively fixed to the output ends of the two stepper motors, with the semi-circular coil cover one located on one side of the semi-circular coil cover two; a connector disposed on one side of the semi-circular coil cover one; a mating groove opened on one side of the semi-circular coil cover two; wiring holes respectively opened on the outer walls of the semi-circular coil cover one and the semi-circular coil cover two; and a rotor penetrating the space between the semi-circular coil cover one and the semi-circular coil cover two.

[0007] Furthermore, two rotor support seats are symmetrically arranged on the top of the base. A three-phase motor is fixedly connected to one of the outer walls of the rotor support seat by bolts. A lead screw is fixedly connected to the output end of the three-phase motor through one side. A gaussmeter is fixedly connected to the nut seat on the lead screw by screws.

[0008] Furthermore, both the first and second semicircular coil covers are equipped with wire harnesses inside. The connectors and mating slots are compatible and electrically connected. The wire harnesses form coils after being connected by the connectors and mating slots.

[0009] By adopting the above technical solution, a Helmholtz coil is formed by connecting wire harnesses. There are two pairs of Helmholtz coils, which are formed by connecting wire harnesses in semicircular coil cover one and semicircular coil cover two respectively. The radii and number of turns of the two Helmholtz coils are exactly the same.

[0010] Furthermore, the first semicircular coil cover and the second semicircular coil cover slide relative to each other;

[0011] By adopting the above technical solution, the stability of the rotation of the first and second semicircular coil covers can be guaranteed.

[0012] Furthermore, the wire harnesses inside the first and second semicircular coil covers pass through the wiring holes and are connected to each other electrically.

[0013] By adopting the above technical solution, it is ensured that the semi-circular wire harness can be connected to form a complete Helmholtz coil.

[0014] Furthermore, the gaussmeter is lightly pressed against the outer wall of the rotor;

[0015] By adopting the above technical solution, the residual magnetism intensity and distribution on the rotor surface can be measured.

[0016] Furthermore, a trapezoidal groove is provided on the top of the rotor support;

[0017] By adopting the above technical solution, the inclined inner wall of the trapezoidal groove facilitates the support and positioning of the rotor.

[0018] The beneficial effects of this utility model are as follows:

[0019] This invention automatically measures the residual magnetism intensity and distribution on the rotor surface using a gaussmeter, marks the magnetic pole polarity, and utilizes a Helmholtz coil formed by the interconnection of two semicircular coil covers to create a reverse magnetic field after applying an alternating current in the opposite direction of the rotor's residual magnetism. This eliminates residual magnetism, avoids signal interference from the sensors inside the measuring machine due to excessively strong magnetic fields, ensures the accuracy of rotor measurement data, and avoids the influence of the rotor's internal magnetic field on the measurement.

[0020] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the cooperation between the first and second semicircular coil covers according to an embodiment of the present invention;

[0024] Figure 3This is a schematic diagram of a semi-circular coil cover according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the second structure of the semicircular coil cover according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the base structure according to an embodiment of the present utility model;

[0027] Figure 6 The following are bottom views of the first and second semicircular coil covers according to an embodiment of the present invention.

[0028] Reference numerals in the attached drawings: 1. Base; 2. Fixing seat; 3. Side support plate; 4. Stepper motor; 5. Semicircular coil cover one; 6. Semicircular coil cover two; 7. Connecting joint; 8. Connecting groove; 9. Wiring hole; 10. Rotor support; 11. Three-phase motor; 12. Lead screw; 13. Gauss meter; 14. Rotor. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] Reference Figure 1-6This utility model embodiment proposes an anti-interference structure for a rotor measuring machine, including a base 1. A fixed seat 2 is provided at the top center of the base 1. Two side support plates 3 are symmetrically arranged on the top of the fixed seat 2. Stepper motors 4 are fixedly connected to the outer wall of one side of each side support plate 3 by bolts. The two stepper motors 4 are respectively fixedly connected to a semi-circular coil cover 5 and a semi-circular coil cover 6 through their output ends on one side. The semi-circular coil cover 5 and the semi-circular coil cover 6 slide relative to each other to ensure the stability of their rotation. The semi-circular coil cover 5 is located on one side of the semi-circular coil cover 6. A butt joint 7 is provided on one side of the semi-circular coil cover 5, and a butt groove 8 is provided on one side of the semi-circular coil cover 6. The interior of each of the two ring covers 6 is equipped with wire harnesses. The connectors 7 and the mating slots 8 are compatible and electrically connected. After the wire harnesses are mated through the connectors 7 and the mating slots 8, they form coils. The wire harnesses are mated to form Helmholtz coils. There are two pairs of Helmholtz coils, which are formed by the wire harnesses in the first half of the semicircular coil cover 5 and the second half of the semicircular coil cover 6 connected in series. The two Helmholtz coils have the same radius and number of turns. The outer walls of the first half of the semicircular coil cover 5 and the second half of the semicircular coil cover 6 are provided with wiring holes 9 at the opposite end. The wire harnesses in the first half of the semicircular coil cover 5 and the second half of the semicircular coil cover 6 pass through the wiring holes 9 and are mated and electrically connected to each other, ensuring that the semicircular wire harnesses can be mated and connected to form a complete Helmholtz coil. The rotor 14 passes through the halfcircular coil cover 5 and the second half of the semicircular coil cover 6.

[0031] Two rotor support seats 10 are symmetrically fixed to the top of the base 1 near the outer side of the fixed seat 2 by bolts. The top of the rotor support seat 10 has a trapezoidal groove. The inclined inner side wall of the trapezoidal groove facilitates the support and positioning of the rotor 14. A three-phase motor 11 is fixedly connected to one side of the outer side wall of one of the rotor support seats 10 by bolts. The three-phase motor 11 is fixedly connected to a lead screw 12 through its output end. A gaussmeter 13 is fixedly connected to the nut seat on the lead screw 12 by screws. The gaussmeter 13 is lightly pressed on the outer side wall of the rotor 14 to measure the residual magnetic intensity and distribution on the surface of the rotor 14.

[0032] The specific implementation method is as follows: Before measuring the rotor 14, the rotor 14 is supported and positioned by the rotor support 10. At this time, the two stepper motors 4 are controlled to work synchronously. The two stepper motors 4 drive the semi-circular coil cover 1 5 and the semi-circular coil cover 2 6 to rotate through the output end on one side. The one side ends of the semi-circular coil cover 1 5 and the semi-circular coil cover 2 6 approach each other, and the connector 7 is inserted into the inside of the docking groove 8. The semi-circular coil cover 1 5 and the semi-circular coil cover 2 6 form a ring structure and are sleeved on the outside of the rotor 14. When the wire harness inside the semi-circular coil cover 1 5 and the semi-circular coil cover 2 6 is electrically connected through the connector 7 and the docking groove 8, two pairs of Helmholtz coils are formed.

[0033] Then, the three-phase motor 11 is controlled to drive the lead screw 12 to rotate through its output terminal on one side. The gaussmeter 13 on the lead screw 12 moves linearly. After the gaussmeter 13 contacts the rotor 14, the gaussmeter 13 is used to measure the residual magnetism intensity and distribution on the surface of the rotor 14 and mark the magnetic pole polarity (N / S pole position). Finally, an alternating current opposite to the direction of the rotor's residual magnetism is applied to the Helmholtz coil. The Helmholtz coil forms a reverse magnetic field to eliminate residual magnetism and avoid signal interference from the sensors in the measuring machine due to excessive magnetic field, thus ensuring the accuracy of the rotor 14 measurement data.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An anti-interference structure for a rotor measuring machine, characterized in that: Including the base (1); A fixing seat (2) is provided on the top of the base (1); Two side support plates (3) are symmetrically arranged on the top of the fixed base (2); Stepper motors (4) are respectively installed on the outer wall of one side of the two side support plates (3); The first semicircular coil cover (5) and the second semicircular coil cover (6) are respectively fixed to the output ends of the two stepper motors (4), and the first semicircular coil cover (5) is located on one side of the second semicircular coil cover (6). A connector (7) is provided on one side end of the semi-circular coil cover (5); A groove (8) is formed on one side end of the semicircular coil cover (6); Wiring holes (9) are respectively opened on the outer side walls of the first (5) and the second (6) of the semicircular coil cover; A rotor (14) that passes through the space between the first semicircular coil cover (5) and the second semicircular coil cover (6).

2. The anti-interference structure for a rotor measuring machine according to claim 1, characterized in that: Two rotor support seats (10) are symmetrically arranged on the top of the base (1). A three-phase motor (11) is fixedly connected to one of the outer walls of the rotor support seat (10) by bolts. A lead screw (12) is fixedly connected to the output end of the three-phase motor (11) through one side. A gaussmeter (13) is fixedly connected to the nut seat on the lead screw (12) by screws.

3. The anti-interference structure for a rotor measuring machine according to claim 1, characterized in that: Both the first semicircular coil cover (5) and the second semicircular coil cover (6) are equipped with wire harnesses. The connector (7) and the mating groove (8) are compatible and electrically connected. The wire harnesses are connected by the connector (7) and the mating groove (8) to form a Helmholtz coil.

4. The anti-interference structure for a rotor measuring machine according to claim 1, characterized in that: The first semicircular coil cover (5) and the second semicircular coil cover (6) slide relative to each other.

5. The anti-interference structure for a rotor measuring machine according to claim 3, characterized in that: The wire harnesses inside the first semicircular coil cover (5) and the second semicircular coil cover (6) pass through the wiring hole (9) and are connected to each other electrically.

6. The anti-interference structure for a rotor measuring machine according to claim 2, characterized in that: The gaussmeter (13) is pressed lightly against the outer wall of the rotor (14).

7. The anti-interference structure for a rotor measuring machine according to claim 2, characterized in that: The rotor support (10) has a trapezoidal groove on its top.

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