Flat wire measuring jig

Abstract

The utility model relates to the technical field of measuring jigs, and provides a flat wire measuring jig, which is used for measuring a flat wire of a hairpin winding, the flat wire comprises two supporting legs and end structures respectively connected with the two supporting legs, and the flat wire measuring jig comprises a base, a base plate, a base plate, a base plate and a base plate, the length measuring mechanism is used for flatly placing the flat wire and measuring the length of the supporting leg, and the length measuring mechanism is supported on the base; the stand column is arranged on the base, and the stand column is provided with a transverse positioning face which is used for making contact with the end structure of the flat wire and limiting movement of the flat wire in the X-axis direction; the height measuring mechanism is used for measuring the height of the end structure in the Z-axis direction perpendicular to the surface of the base, and the height measuring mechanism is supported on the stand column. Compared with the prior art, the flat wire measuring jig provided by the utility model has the advantages that the measuring efficiency, the measuring convenience and the measuring accuracy are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring jigs, in particular to a flat wire measuring jig. Background Art

[0002] The motor with rectangular cross-section wire in the stator winding is called a flat wire motor (also called Pin motor). Unlike ordinary wound-wire motors, flat wire motors do not first wind round wires into specific coils and then insert them into the stator slots by machines. Instead, flat wires (also called copper wires or flat copper wires, collectively referred to as flat wires below for the sake of uniform technical terms) are preformed, inserted into the stator slots, and re-formed and welded at one or both ends to form the entire stator winding. Flat wire is conducive to improving the slot fill rate of the motor. Generally, the slot fill rate of round wire motors is about 50%, while the slot fill rate of flat wire motors can reach more than 70%. According to the winding form of flat wire motors, they can be divided into Hair-pin windings (also called hairpin windings, collectively referred to as hairpin windings below), I-Pin windings, wave windings, etc. At present, for a stator adopting a hairpin winding, it is necessary to measure the size of the flat wire before inserting the flat wire into the stator. The flat wire that falls within the tolerance range after comparison is assembled into the stator, thereby improving the welding efficiency and ensuring the stability of the stator structure. However, the measurement of the flat wire is performed by placing the flat wire on a workbench and then measuring the flat wire with a caliper. Therefore, the measurement efficiency is low and the accuracy of the measurement result is poor. Utility Model Content

[0003] The utility model aims to provide a flat wire measuring jig to solve the technical problems existing in the prior art that the flat wire measurement is not convenient enough, the measurement efficiency is low, and the accuracy of the measurement result is poor.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a flat wire measuring fixture for measuring the flat wire of a hairpin winding, the flat wire comprising two legs and end structures respectively connected to the two legs, wherein the flat wire measuring fixture comprises: a base; a length measuring mechanism for placing the flat wire flat and measuring the length of the legs, the length measuring mechanism being supported on the base; a column arranged on the base, the column having a lateral positioning surface for contacting the end structure of the flat wire and limiting the movement of the flat wire in the X-axis direction; and a height measuring mechanism for measuring the height of the end structure in the Z-axis direction perpendicular to the surface of the base, the height measuring mechanism being supported on the column.

[0005] Furthermore, the surface of the base has an orthogonal X-axis direction and a Y-axis direction; the length measuring mechanism includes a first measuring component and a second measuring component spaced apart in the Y-axis direction, the first measuring component and the second measuring component both include a base arranged on the base and used to support the flat wire and a transverse caliper arranged on the base, the transverse caliper includes a transverse ruler body extending along the X-axis direction and a transverse cursor component slidably arranged on the transverse ruler body.

[0006] Furthermore, the base of the first measuring component is fixed on the base, a transverse guide rail is arranged on the base, the transverse guide rail extends along the Y-axis direction, and the base of the second measuring component is slidably arranged on the transverse guide rail.

[0007] Furthermore, the base includes a bottom portion contacting with and supporting the flat wire and a boss portion protruding from the top surface of the bottom portion, and the transverse caliper is arranged on the boss portion.

[0008] Furthermore, a vertical positioning clamp is provided on the boss portion for fixing the flat wire.

[0009] Furthermore, the vertical positioning clamp includes a pressing head for contacting the flat wire, and a clearance groove corresponding to the pressing head is provided on the boss portion.

[0010] Furthermore, the height measuring mechanism includes a vertical caliper and a contact seat arranged on the column, and an operating rod for controlling the movement of the contact seat in the Z-axis direction. The vertical caliper includes a vertical ruler body extending along the Z-axis direction and a vertical cursor component slidably arranged on the vertical ruler body. The vertical cursor component is connected to the contact seat, and the contact seat has a contact surface located on its bottom surface and used to abut against the end structure.

[0011] Furthermore, a threaded portion is provided on the operating rod, an operating hole for the operating rod to pass through is provided on the contact seat, and a threaded matching portion threadably matched with the threaded portion is provided on the inner wall of the operating hole.

[0012] Furthermore, the contact seat includes a connection block connected to the vertical cursor component, a contact block connected to the connection block, and a driving block connected to the contact block. The contact surface is arranged on the contact block, and the operating rod is connected to the driving block.

[0013] Furthermore, a vertical guide rail is arranged on the column, the vertical guide rail extends along the Z-axis direction, and the contact seat is slidably arranged on the vertical guide rail.

[0014] Compared with the prior art, the flat wire measuring jig provided by the utility model includes a base, a length measuring mechanism, a column and a height measuring mechanism. The length measuring mechanism is supported on the base, and is used for laying the flat wire and measuring the length of the legs; the column is arranged on the base, and has a lateral positioning surface for contacting the end structure of the flat wire and limiting the movement of the flat wire in the X-axis direction; the height measuring mechanism is supported on the column, and is used for measuring the height of the end structure in the Z-axis direction perpendicular to the surface of the base. In this way, the flat wire measuring jig can receive the flat wire to be measured and lay the flat wire on the length measuring mechanism of the base. After positioning the flat wire by the lateral positioning surface of the column, the length measuring mechanism is used to measure the length of the legs of the flat wire, and the height measuring mechanism can be used to measure the height of the end structure of the flat wire after laying flat.

[0015] The beneficial effect of the flat wire measuring jig provided by the utility model is that compared with the prior art, the flat wire measuring jig of the utility model can measure the leg length and end structure height of the flat wire by placing the flat wire to be measured flat on the jig through a length measuring mechanism and a height measuring mechanism, thereby improving the measurement efficiency, convenience and accuracy of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional schematic diagram of the flat wire measuring fixture provided by the embodiment of the utility model. Figure 1 ;

[0017] Figure 2 This is a three-dimensional schematic diagram of the flat wire measuring fixture provided by the embodiment of the utility model. Figure 2 ;

[0018] Figure 3 It is a three-dimensional schematic diagram of the flat wire provided by an embodiment of the utility model;.

[0019] Main component symbols

[0020] 100- flat wire measuring fixture; 10- base; 11- horizontal guide rail; 20- length measuring mechanism; 21- first measuring component; 22- second measuring component; 23- base; 231- bottom; 232- boss; 233- avoidance groove; 24- horizontal caliper; 241- horizontal ruler body; 242- horizontal vernier component; 30- column; 301- horizontal positioning surface; 31- vertical guide rail; 40- height measuring mechanism; 41- vertical caliper; 411- vertical ruler body; 412- vertical vernier component; 42- contact seat; 420- contact surface; 421- connecting block; 422- contact block; 423- driving block; 43- operating lever; 50- vertical positioning clamp; 51- lower pressure head; 200- flat wire; 201- leg; 202- end structure. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the implementation of the present invention is described in detail below in conjunction with specific drawings.

[0023] For the convenience of description, the "left", "right", "upper" and "lower" referred to below are consistent with the left, right, upper and lower directions of the drawings themselves, but do not limit the structure of the present utility model.

[0024] Unless otherwise defined, the technical or scientific terms used herein shall have the common meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the patent application specification and claims of the utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not indicate a quantity limitation, but indicate the existence of at least one.

[0025] like Figures 1 to 3 As shown, the flat wire measuring fixture 100 provided in this embodiment is used to measure the flat wire 200 of the hairpin winding, the flat wire 200 includes two legs 201 (parallel to each other) and end structures 202 respectively connected to the two legs 201, and the flat wire measuring fixture 100 includes: a base 10; a length measuring mechanism 20, used for placing the flat wire 200 flat (supporting the flat wire 200) and measuring the length L of the legs 201, the length measuring mechanism 20 is supported on the base 10; a column 30, which is arranged on the base 10, and the column 30 has a lateral positioning surface 301 for contacting the end structure 202 of the flat wire 200 and limiting the movement of the flat wire 200 in the X-axis direction; and a height measuring mechanism 40, which is used to measure the height H of the end structure 202 in the Z-axis direction perpendicular to the surface of the base 10, and the height measuring mechanism 40 is supported on the column 30.

[0026] The flat wire measuring jig 100 can measure the length L of the legs 201 and the height H of the end structure 202 of the flat wire 200 by placing the flat wire 200 to be measured flat on the jig through the length measuring mechanism 20 and the height measuring mechanism 40, thereby improving the measurement efficiency, convenience and accuracy.

[0027] See also Figures 1 to 3The flat wire measuring jig 100 provided in this embodiment is used to measure the size parameters of the to-be-measured portion of the flat wire 200 of the hairpin winding. In this embodiment, the flat wire 200 of the hairpin winding includes two legs 201 parallel to each other and a triangular end structure 202 respectively connected to the two legs 201. After the flat wire 200 is formed, the triangular end structure 202 is not on the same plane as the legs 201. The to-be-measured portion refers to the legs 201 and the end structure 202. The size parameters of the to-be-measured portion are the length dimension of the legs 201 and the height dimension of the end structure 202 when the flat wire 200 is in a flat state.

[0028] See also Figures 1 to 3 The flat wire measuring jig 100 provided in this embodiment includes a base 10, a length measuring mechanism 20, a column 30 and a height measuring mechanism 40, and the length measuring mechanism 20, the column 30 and the height measuring mechanism 40 are all supported on the base 10. In this embodiment, the base 10 is roughly rectangular, and the surface of the base 10 has an orthogonal X-axis direction and a Y-axis direction. The length measuring mechanism 20 is supported on the base 10, and the length measuring mechanism 20 can be used to place the flat wire 200 flat and measure the length L of the leg 201 of the flat wire 200 supported on the length measuring mechanism 20. The column 30 is arranged on the base 10 and is located on one side of the length measuring mechanism 20. The column 30 has a lateral positioning surface 301 located on its side wall, and the lateral positioning surface 301 can contact the end structure 202 of the flat wire 200 to locate the position of the flat wire 200 in the X-axis direction. The height measuring mechanism 40 is supported on the column 30 so as to be movable up and down. The height measuring mechanism 40 can measure the height H of the end structure 202 in the Z-axis direction perpendicular to the surface of the base 10 .

[0029] See also Figures 1 to 3 The length measuring mechanism 20 provided in this embodiment includes a first measuring component 21 and a second measuring component 22 spaced apart in the Y-axis direction. The structures of the first measuring component 21 and the second measuring component 22 may be the same or different. The first measuring component 21 and the second measuring component 22 both include a base 23 disposed on the base 10 and used to support the flat wire 200 and a transverse caliper 24 disposed on the base 23. The transverse caliper 24 includes a transverse ruler body 241 extending along the X-axis direction and a transverse cursor component 242 slidably disposed on the transverse ruler body 241. Graduations may be formed on the transverse ruler body 241. In this embodiment, the column 30 is located between the first measuring component 21 and the second measuring component 22. The transverse caliper 24 is, but is not limited to, an electronic digital caliper. The transverse caliper 24 is supported on the base 23. When the flat wire 200 is laid flat, the two legs 201 of the flat wire 200 are respectively placed on the corresponding base 23, and the position of the flat wire 200 in the X-axis direction is located through the transverse positioning surface 301 of the column 30.

[0030] See also Figures 1 to 3 The base 23 of the first measuring component 21 provided in this embodiment is fixed on the base 10, and the base 10 is provided with a transverse guide rail 11, which extends along the Y-axis direction, and the base 23 of the second measuring component 22 is slidably arranged on the transverse guide rail 11. By moving the position of the second measuring component 22 in the Y-axis direction and changing the spacing between the first measuring component 21 and the second measuring component 22, the flat wires 200 of different widths can be adapted, thereby improving the applicable range of the fixture and saving costs.

[0031] In yet another embodiment, the bases 23 of the first measuring component 21 and the second measuring component 22 may both be fixedly mounted on the base 10 .

[0032] In yet another embodiment, the bases 23 of the first measuring component 21 and the second measuring component 22 may both be movably mounted on the base 10 .

[0033] See also Figures 1 to 3 The base 23 provided in this embodiment includes a bottom 231 that contacts and supports the flat wire 200 and a boss portion 232 protruding from the top surface of the bottom 231, and the transverse caliper 24 is arranged on the boss portion 232. In this embodiment, the bases 23 of the first measuring component 21 and the second measuring component 22 are symmetrical with respect to the X-axis direction. The base 23 is a stepped structure, including a bottom 231 and a boss portion 232 protruding from the top surface of the bottom 231. Before measurement, the legs 201 of the flat wire 200 are placed on the corresponding bottom 231 respectively. It should be pointed out that the height value (H value shown in the figure) of the end structure 202 of the flat wire 200 in this embodiment is the distance between the top surface of the end structure 202 and the top surface of the bottom 231 when the flat wire 200 is placed flat on the base 23.

[0034] See also Figures 1 to 3 The boss portion 232 provided in this embodiment is provided with a vertical positioning clip 50 for fixing the flat wire 200. In this embodiment, the number of the vertical positioning clip 50 on each base 23 is but not limited to one. After the flat wire 200 is placed, the vertical positioning clip 50 can be pressed down to keep the flat wire 200 on the base 23.

[0035] See also Figures 1 to 3 The vertical positioning clamp 50 provided in this embodiment includes a pressing head 51 for contacting the flat wire 200, and a convex portion 232 is provided with an escape groove 233 corresponding to the pressing head 51. In this way, the pressing head 51 can avoid interference with the convex portion 232 when pressing downward, and can ensure effective contact between the pressing head 51 and the flat wire 200.

[0036] See also Figures 1 to 3The height measuring mechanism 40 provided in this embodiment includes a vertical caliper 41, a contact seat 42, and an operating rod 43 for controlling the movement of the contact seat 42 in the Z-axis direction, the vertical caliper 41 includes a vertical ruler body 411 extending along the Z-axis direction and a vertical cursor component 412 slidably arranged on the vertical ruler body 411, the vertical cursor component 412 is connected to the contact seat 42, and the contact seat 42 has a contact surface 420 located on its bottom surface and used to abut against the end structure 202. In this embodiment, the vertical caliper 41 is but not limited to an electronic digital caliper. The contact seat 42 can be installed on the column 30 in a liftable manner. The contact seat 42 is connected and fixed to the vertical cursor component 412 and can move synchronously up and down. Driven by the operating rod 43, the contact seat 42 moves in the Z-axis direction. It can be understood that after placing the flat wire 200, the operating rod 43 is driven to move the contact seat 42 downward and contact with the top of the end structure 202 of the flat wire 200, so that the height H of the end structure 202 can be measured by the position of the vertical cursor component 412 of the contact seat 42.

[0037] See also Figures 1 to 3 The surface of the operating rod 43 provided in this embodiment is provided with a threaded portion (not shown in the figure), an operating hole for the operating rod 43 to pass through is provided on the contact seat 42, and a threaded mating portion (not shown in the figure) that is threadedly mated with the threaded portion is provided on the inner wall of the operating hole. In this embodiment, the bottom end of the operating rod 43 is supported on the base 23 of the first measuring component 21, and the contact seat 42 and the vertical cursor component 412 are driven to move in the Z-axis direction by rotating the operating rod 43. It should be pointed out that when measuring the height H of the end structure 202, it is only necessary to rotate the operating rod 43 to make the contact seat 42 contact with the end structure 202. The weight of the contact seat 42 is supported on the base 23 through the operating rod 43, thereby preventing the contact seat 42 from directly pressing on the flat wire 200 to deform the flat wire 200, affecting the measurement results and causing damage to the flat wire 200.

[0038] See also Figures 1 to 3 In this embodiment, the contact seat 42 includes a connecting block 421 connected to the vertical cursor component 412, a contact block 422 connected to the connecting block 421, and a driving block 423 connected to the contact block 422. The contact surface 420 is arranged on the contact block 422, and the operating rod 43 is connected to the driving block 423. The vertical cursor component 412, the connecting block 421, the contact block 422, and the driving block 423 are connected and fixed in sequence by fasteners such as screws, and an operating hole is formed on the driving block 423.

[0039] See also Figures 1 to 3 In this embodiment, a vertical guide rail 31 is provided on the column 30, and the vertical guide rail 31 is fixed to the column 30 by any existing fixing method such as welding and screws. The vertical guide rail 31 extends along the Z-axis direction, and the contact seat 42 is slidably set on the vertical guide rail 31.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flat wire measuring jig for measuring a flat wire of a hairpin winding, wherein the flat wire comprises two legs and end structures respectively connected to the two legs, characterized in that: The flat wire measuring fixture comprises: Pedestal; A length measuring mechanism, used for laying the flat wire flat and measuring the length of the legs, the length measuring mechanism being supported on the base; A column, disposed on the base, the column having a lateral positioning surface for contacting the end structure of the flat wire and limiting the movement of the flat wire in the X-axis direction; and A height measuring mechanism is used to measure the height of the end structure in a Z-axis direction perpendicular to the surface of the base, and the height measuring mechanism is supported on the column.

2. The flat wire measuring jig according to claim 1, characterized in that: The base surface has an orthogonal X-axis direction and a Y-axis direction; the length measuring mechanism includes a first measuring component and a second measuring component spaced apart in the Y-axis direction, the first measuring component and the second measuring component both include a base arranged on the base and used to support the flat wire and a transverse caliper arranged on the base, the transverse caliper includes a transverse ruler body extending along the X-axis direction and a transverse cursor component slidably arranged on the transverse ruler body.

3. The flat wire measuring jig according to claim 2, characterized in that: The base of the first measuring component is fixed on the base, a transverse guide rail is arranged on the base, and the transverse guide rail extends along the Y-axis direction. The base of the second measuring component is slidably arranged on the transverse guide rail.

4. The flat wire measuring jig according to claim 2 or 3, characterized in that: The base includes a bottom portion contacting with the flat wire and supporting the flat wire and a boss portion protruding from the top surface of the bottom portion, and the transverse caliper is arranged on the boss portion.

5. The flat wire measuring jig according to claim 4, characterized in that: A vertical positioning clip is arranged on the boss portion for fixing the flat wire.

6. The flat wire measuring jig according to claim 5, characterized in that: The vertical positioning clamp comprises a pressing head for contacting the flat wire, and a clearance groove corresponding to the pressing head is formed on the boss portion.

7. The flat wire measuring jig according to any one of claims 1 to 3, characterized in that: The height measuring mechanism includes a vertical caliper and a contact seat arranged on the column, and an operating rod for controlling the contact seat to move in the Z-axis direction. The vertical caliper includes a vertical ruler body extending along the Z-axis direction and a vertical cursor component slidably arranged on the vertical ruler body. The vertical cursor component is connected to the contact seat, and the contact seat has a contact surface located on its bottom surface and used to abut against the end structure.

8. The flat wire measuring jig according to claim 7, characterized in that: The operating rod is provided with a threaded portion, the contact seat is provided with an operating hole for the operating rod to pass through, and the inner wall of the operating hole is provided with a threaded matching portion threadably matched with the threaded portion.

9. The flat wire measuring jig according to claim 7, characterized in that: The contact seat comprises a connection block connected to the vertical cursor component, a contact block connected to the connection block, and a driving block connected to the contact block. The contact surface is arranged on the contact block, and the operating rod is connected to the driving block.

10. The flat wire measuring jig according to claim 7, characterized in that: The column is provided with a vertical guide rail, the vertical guide rail extends along the Z-axis direction, and the contact seat is slidably arranged on the vertical guide rail.

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