High-precision rotary transformer motor winding mechanism

Abstract

A high-precision rotary transformer motor winding mechanism comprises an X-axis driving part, a Y-axis driving part, a Z-axis driving part, an overturning winding mechanism and a product winding clamp, a structure that a double-stator linear motor is used for driving a Z-axis to move is used for replacing a traditional driving mode that a servo motor is linked with a belt, and therefore high-precision operation of a winding execution structure is controlled; meanwhile, a mechanical linkage mode of a spline and a connecting rod is adopted in the turnover connecting rod mechanism, an actuating mode that an air cylinder is used for driving the connecting rod to move in an existing winding device is replaced, the transmission precision and stability are improved, the large-angle winding function is achieved, and the quality and reliability of wound coils are greatly improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of motors, in particular to a manufacturing process of motors, and specifically relates to a high-precision resolver motor winding mechanism. Background Art

[0002] At present, in order to ensure high-precision output performance, the key component stator armature of military high-precision resolver motors mostly adopts concentric winding inner slot structure. Since the concentric winding has a large span (up to 1 / 2 circumference), it belongs to large span winding. The number of slots in each span of the same set of coils is different, and the diameter of the enameled wire used is generally thin (no more than φ0.1mm), which makes winding more difficult. In order to improve production efficiency and winding consistency, winding equipment is planned to be used to achieve automatic winding.

[0003] For this type of fine-wire concentric winding structure, the winding equipment needs to achieve a high winding accuracy during the winding process, especially the winding actuator (Z-axis motion and winding flipping mechanism) that mainly realizes the winding process. The winding actuator of traditional winding equipment usually adopts servo motor and cylinder drive, and the belt drive mode realizes the winding process. The winding positioning accuracy is low, the winding flipping process has large vibration, the overall operation stability of the mechanism is low, and the noise is high. The low transmission efficiency of each component leads to low production efficiency. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a high-precision resolver motor winding mechanism, innovates the winding execution unit design method of the winding equipment, and improves the coil winding quality and winding efficiency.

[0005] The present invention is achieved through the following technical solutions.

[0006] A high-precision resolver motor winding mechanism provided by the present invention comprises an X-axis drive unit, a Y-axis drive unit, a Z-axis drive unit, a flip winding mechanism and a product winding fixture;

[0007] The X-axis driving part is provided with two parallel guide rails, which are fixed on a common bottom plate with the product winding fixture, and the product winding fixture is arranged at the end of the guide rail of the X-axis driving part; the Y-axis driving part is also provided with two parallel guide rails, which are arranged on a platform arranged on the X-axis driving part, and the two parallel guide rails of the Y-axis driving part are perpendicular to each other with the two parallel guide rails arranged on the X-axis driving part; the Z-axis driving part is a linear motor structure, including a Z-axis stator and a Z-axis mover, the Z-axis stator is vertically installed on the platform arranged on the Y-axis driving part, and is perpendicular to the guide rails of the X-axis driving part and the guide rails of the Y-axis driving part, the Z-axis mover is installed on the Z-axis stator, and can reciprocate along the Z-axis stator; the flip winding mechanism is fixedly installed on the Z-axis mover, and is located on the same side of the Z-axis driving part as the product winding fixture, and the flip winding mechanism can reciprocate along the Z-axis stator with the Z-axis mover.

[0008] Furthermore, the Z-axis driving unit is driven by a high-precision dual-stator linear motor.

[0009] Furthermore, the winding mechanism includes a winding rod turning servo motor, a spline, a first joint connecting rod, a second joint connecting rod, a connecting rod and a winding rod turning mechanism;

[0010] The winding rod flipping servo motor is fixedly mounted on the upper end of the Z-axis stator, and its output end is connected to the spline to drive the spline to rotate. One end of the first joint connecting rod is connected to the spline end, and the other end is connected to one end of the second joint connecting rod. The other end of the second joint connecting rod is connected to one end of the connecting rod, and the other end of the connecting rod is connected to the winding rod flipping mechanism. A winding rod is also provided on the winding rod flipping mechanism. The winding rod flipping mechanism is fixedly mounted on the Z-axis mover. Under the actuation of the connecting rod, the winding rod flipping mechanism can rotate along a fixed point on the Z-axis mover.

[0011] Furthermore, the first joint connecting rod and the second joint connecting rod are connected by a ball bearing.

[0012] Furthermore, the second joint connecting rod and the connecting rod are connected by using a ball bearing.

[0013] Furthermore, a magnetic grid is provided on the Z-axis mover.

[0014] Furthermore, the Z-axis stator is provided with a code reader at a position corresponding to the magnetic grid.

[0015] Furthermore, the Z-axis driving unit has two Z-axis stators, which are arranged side by side and in parallel on both sides of the Z-axis mover.

[0016] The beneficial effects of the present invention are as follows: the present invention uses a double-stator linear motor to drive the Z-axis movement structure, replacing the traditional servo motor and belt linkage driving method, so as to control the high-precision operation of the winding execution structure; at the same time, the flip connecting rod mechanism uses a spline and a connecting rod mechanical linkage method, replacing the existing winding device using a cylinder to drive the connecting rod movement, thereby improving the transmission accuracy and stability, realizing a large-angle winding function, and greatly improving the quality and reliability of the wound coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the Z-axis driving unit of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the flip winding mechanism of the present invention;

[0020] Figure 4 is a schematic structural diagram of a resolver core to be wound according to the present invention;

[0021] In the figure: 1-X-axis driving unit; 2-Y-axis driving unit; 3-Z-axis driving unit; 31-Z-axis stator; 32-Z-axis mover; 4-flip winding mechanism; 40-winding rod flip servo motor; 41-spline 42-first joint connecting rod; 43-second joint connecting rod; 44-connecting rod; 45-winding rod flipping mechanism; 46-magnetic grid; 47-code reader; 5-product winding fixture. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0023] like Figure 1As shown, a high-precision resolver motor winding mechanism comprises an X-axis drive unit 1, a Y-axis drive unit 2, a Z-axis drive unit 3, a flip winding mechanism 4 and a product winding fixture 5; the X-axis drive unit 1 is provided with two parallel guide rails, which are fixed on a common bottom plate with the product winding fixture 5, and the product winding fixture 5 is arranged at the end of the guide rail of the X-axis drive unit 1; the Y-axis drive unit 2 is also provided with two parallel guide rails, which are arranged on a platform provided on the X-axis drive unit 1, and the two parallel guide rails of the Y-axis drive unit 2 are perpendicular to each other with the two parallel guide rails provided on the X-axis drive unit 2 Straight; the Z-axis driving unit 3 is a linear motor structure, including a Z-axis stator 31 and a Z-axis mover 32, the Z-axis stator 31 is vertically installed on the platform set on the Y-axis driving unit 2, and is perpendicular to the guide rails of the X-axis driving unit 1 and the guide rails of the Y-axis driving unit 2, the Z-axis mover 32 is installed on the Z-axis stator 31, and can reciprocate along the Z-axis stator 31; the flip winding mechanism 4 is fixedly installed on the Z-axis mover 32, and is located on the same side of the Z-axis driving unit 3 as the product winding fixture 5, and the flip winding mechanism 4 can reciprocate along the Z-axis stator 31 with the Z-axis mover 32.

[0024] The Z-axis driving unit 3 is driven by a high-precision double-stator linear motor.

[0025] The flipping winding mechanism 4 includes a winding rod flipping servo motor 40, a spline 41, a first joint link 42, a second joint link 43, a connecting rod 44 and a winding rod flipping mechanism 45; the winding rod flipping servo motor 40 is fixedly installed on the upper end of the Z-axis stator 31, and its output end is connected to the spline 41, which can drive the spline 41 to rotate, one end of the first joint link 42 is connected to the spline 41 end, and the other end is connected to one end of the second joint link 43, the other end of the second joint link 43 is connected to one end of the connecting rod 44, and the other end of the connecting rod 44 is connected to the winding rod flipping mechanism 45, and a winding rod is also provided on the winding rod flipping mechanism 45, and the winding rod flipping mechanism 45 is fixedly installed on the Z-axis mover 32. Under the actuation of the connecting rod 44, the winding rod flipping mechanism 45 can rotate along a fixed point on the Z-axis mover 32.

[0026] The first joint connecting rod 42 and the second joint connecting rod 43 are connected by a ball bearing. The second joint connecting rod 43 and the connecting rod 44 are connected by a ball bearing.

[0027] The Z-axis mover 32 is provided with a magnetic grid 47. The Z-axis stator 31 is provided with a code reader 46 at a position corresponding to the magnetic grid 47. The Z-axis drive unit 3 has two Z-axis stators 31, which are arranged side by side and in parallel on both sides of the Z-axis mover 32.

[0028] During operation, after receiving the electrical signal, the Z-axis stator 31 converts the electrical signal into a magnetic induction signal and transmits it to the Z-axis mover 32. When the Z-axis stator 31 and the Z-axis mover 32 are not in contact with each other, the retrieval signal of the magnetic grid 46 and the code reader 47 is coordinated for control to complete the high-precision (less than 0.008 mm) on-line position control drive of the Z-axis mover 32. The Z-axis mover 32 is installed with a flip connecting rod mechanism (i.e., a flip winding mechanism 4). The Z-axis mover 32 moves up and down to drive the flip winding mechanism 4 to move on-line, thereby realizing high-precision positioning winding of the Z-axis during the winding process. Compared with the design method of driving the belt on-line with a traditional servo motor, the winding process has higher running accuracy and higher transmission stability.

[0029] The present invention adopts a design method of using a servo motor spline to drive the connecting rod to move, and designs a ball bearing connection at the connection point of each key connecting rod, so that the coil winding rotation angle range is increased (maximum 120 degrees), and the rotation is more flexible. The traditional method of using a cylinder to drive the connecting rod to achieve flipping can only achieve a maximum flip of 90 degrees, a small flip angle, low transmission accuracy, and large vibration during the transmission process. For thin-wire coils, the risk of coil breaking or deformation is very likely to occur.

Claims

1. A high-precision resolver motor winding mechanism, characterized in that: It includes X-axis driving unit, Y-axis driving unit, Z-axis driving unit, flip winding mechanism and product winding fixture; The X-axis driving part is provided with two parallel guide rails, which are fixed on a common bottom plate with the product winding fixture, and the product winding fixture is arranged at the end of the guide rail of the X-axis driving part; the Y-axis driving part is also provided with two parallel guide rails, which are arranged on a platform arranged on the X-axis driving part, and the two parallel guide rails of the Y-axis driving part are perpendicular to each other with the two parallel guide rails arranged on the X-axis driving part; the Z-axis driving part is a linear motor structure, including a Z-axis stator and a Z-axis mover, the Z-axis stator is vertically installed on the platform arranged on the Y-axis driving part, and is perpendicular to the guide rails of the X-axis driving part and the guide rails of the Y-axis driving part, the Z-axis mover is installed on the Z-axis stator, and can reciprocate along the Z-axis stator; the flip winding mechanism is fixedly installed on the Z-axis mover, and is located on the same side of the Z-axis driving part as the product winding fixture, and the flip winding mechanism can reciprocate along the Z-axis stator with the Z-axis mover.

2. The high-precision resolver motor winding mechanism according to claim 1, characterized in that: The Z-axis driving unit is driven by a high-precision double-stator linear motor.

3. The high-precision resolver motor winding mechanism according to claim 1, characterized in that: The winding mechanism comprises a winding rod turning servo motor, a spline, a first joint connecting rod, a second joint connecting rod, a connecting rod and a winding rod turning mechanism; The winding rod flipping servo motor is fixedly mounted on the upper end of the Z-axis stator, and its output end is connected to the spline to drive the spline to rotate. One end of the first joint connecting rod is connected to the spline end, and the other end is connected to one end of the second joint connecting rod. The other end of the second joint connecting rod is connected to one end of the connecting rod, and the other end of the connecting rod is connected to the winding rod flipping mechanism. A winding rod is also provided on the winding rod flipping mechanism. The winding rod flipping mechanism is fixedly mounted on the Z-axis mover. Under the actuation of the connecting rod, the winding rod flipping mechanism can rotate along a fixed point on the Z-axis mover.

4. The high-precision resolver motor winding mechanism according to claim 3, characterized in that: The first joint connecting rod and the second joint connecting rod are connected by using a ball bearing.

5. The high-precision resolver motor winding mechanism according to claim 3, characterized in that: The second joint connecting rod is connected to the connecting rod by using a ball bearing.

6. The high-precision resolver motor winding mechanism according to claim 1, characterized in that: A magnetic grid is arranged on the Z-axis mover.

7. The high-precision resolver motor winding mechanism according to claim 6, characterized in that: The Z-axis stator is provided with a code reader at a position corresponding to the magnetic grid.

8. The high-precision resolver motor winding mechanism according to claim 1, characterized in that: The Z-axis driving unit has two Z-axis stators which are arranged side by side and in parallel on both sides of the Z-axis mover.

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