Stator coil bending tool

Abstract

The invention discloses a stator coil bending tool, comprising a bottom plate, a copper bar positioning baffle, a T-slot plate, a first horizontal side block, a second horizontal side block, a short side bending baffle, a long side bending baffle, a short side bending spanner and a long side bending spanner, wherein the copper bar positioning baffle is fixed on one end of a longitudinal T-slot, the T-slot plate is fixed at the intersection of the longitudinal T-slot and a transverse T-slot, the first horizontal side block and the second horizontal side block are fixed at intervals in the middle of the longitudinal T-slot, the short side bending baffle and the long side bending baffle are respectively fixed obliquely on the bottom plate, one end of the short side bending spanner is hinged to one end of the T-slot plate, and one end of the long side bending spanner is hinged to the other end of the T-slot plate. The invention has a precise bending angle, overcomes the technical defect that the existing stator coil bending process needs to be operated in steps, and significantly improves the stator coil bending quality and bending efficiency.

Description

Technical Field

[0001] The invention relates to a stator coil processing tool for a marine generator, in particular to a stator coil bending tool, and belongs to the technical field of generator manufacturing. Background Art

[0002] The stator coil of the marine generator is made of copper bars that are bent twice into a deformed Z shape. Figure 1 As shown, it includes short sides 100, long sides 200 and a connecting side 300 in the middle which are parallel to each other. The angle A between the connecting side 300 and the short side 100 and the angle B between the connecting side 300 and the long side 200 are both 58.2°. At present, the bending process of the stator coil is as follows: on a special tool for bending the long side, first clamp the middle of the copper bar, measure the length of the long side 200, mark the bending point on the copper bar, and then bend the long side 200 so that the angle A between it and the connecting side 300 is 58.2°. Then, the semi-finished stator coil with the long side bent is unloaded, and the middle part is clamped on the special tooling for short side bending. Then, the length of the short side 300100 is measured, and the bending point is marked on the copper bar, and the short side 200 is bent so that the angle B with the connecting side 300 is 58.2°. Then, the stator coil with the bent side is unloaded for plane correction, thereby completing the bending of the stator coil. This bending process and tooling have the following defects: the short side and the long side are bent separately on different tools, and the bending accuracy of the stator coil is reduced due to repeated positioning. The dimensional errors of the long side and the short side are large, which makes it difficult for the stator coil to be embedded in the stator slot; and the bending efficiency is low, which affects the manufacturing quality and manufacturing efficiency of the marine generator. Summary of the invention

[0003] The purpose of the invention is to provide a stator coil bending tool to improve the bending quality and work efficiency of the stator coil.

[0004] The present invention is achieved through the following technical solutions:

[0005] A stator coil bending tool, comprising a bottom plate, a copper bar positioning baffle, a T-slot plate, a first horizontal side block, a second horizontal side block, a short side bending baffle, a long side bending baffle, a short side bending wrench and a long side bending wrench, wherein the bottom plate is a rectangular flat plate, a longitudinal T-slot is provided in the bottom plate, and two transverse T-slots are provided in the bottom plate, respectively intersecting the longitudinal T-slot at right angles; the copper bar positioning baffle is fixed on one end of the longitudinal T-slot, the T-slot plate is fixed at the intersection of the longitudinal T-slot and a transverse T-slot, the first horizontal side block and the second horizontal side block are fixed at intervals on the longitudinal T-slot In the middle of the groove, a copper bar conveying groove is formed between the first horizontal side block and the second horizontal side block and the adjacent side surfaces of the T-slot plate; the two ends of the inclined short side bending baffle are respectively fixed to one end of the first horizontal side block and the upper side surface of the bottom plate close to the longitudinal T-slot, and the two ends of the inclined long side bending baffle are respectively fixed to one end of the horizontal side of the T-slot plate and the upper side surface of the bottom plate close to the transverse T-slot; the short side bending wrench is L-shaped, the end of the L-shaped short side is hinged to one end of the horizontal side of the T-slot plate, and the bending screw is vertically fixed to the middle part of the L-shaped short side; one end of the long side bending wrench is hinged to the other end of the horizontal side of the T-slot plate.

[0006] The purpose of the present invention can be further achieved by the following technical measures.

[0007] Furthermore, the lower parts of the copper bar positioning baffle, T-slot plate, first horizontal side block and second horizontal side block are all I-shaped structures, and the lower part of the I-shape is embedded in the corresponding T-slot, and the fixing screws are vertically screwed into the copper bar positioning baffle, T-slot plate, first horizontal side block and second horizontal side block respectively, and the bottom of the fixing screws rests on the bottom surface of the T-slot.

[0008] Furthermore, the copper bar positioning baffle is L-shaped, and the outer side surface of the short side of the L-shape is the positioning surface of the copper bar end.

[0009] Furthermore, the short side bending baffle includes a short side baffle and a baffle, and the long side bending baffle includes a long side baffle and a baffle; the baffle is a right angle in which the length of the horizontal plane is greater than the length of the vertical plane, and a fixing groove is opened in the longitudinal center of the horizontal plane; the baffle of the short side bending baffle is obliquely fixed to the upper side surface of the bottom plate outside the first horizontal side baffle by a fastening screw passing through the fixing groove, and is located on one side of the longitudinal T-slot; the baffle of the long side bending baffle is obliquely fixed to the outside of the transverse T-slot by a fastening screw passing through the corresponding fixing groove; one end of the short side baffle is fixed to one end of the first horizontal side baffle, and the middle part of the short side baffle abuts against the outside of the corresponding baffle vertical surface; one end of the long side baffle is fixed to one end of the horizontal side of the T-slot plate, and the other end of the long side baffle abuts against the outside of the corresponding baffle vertical surface.

[0010] Furthermore, a plurality of bending screw fixing holes are arranged at intervals on the L-shaped short side of the short side bending wrench, and the distance C between the lower side surface of the short side bending wrench and the upper side surface of the base plate is greater than the thickness D of the copper bar positioning baffle, the T-slot plate and the first horizontal side block.

[0011] Furthermore, a copper bar support block is laterally extended from the lower side of the middle portion of the long-side bending wrench.

[0012] The present invention has a simple structure and is easy to operate, and overcomes the technical defect that the existing stator coil bending process requires step-by-step operation. The copper bar positioning baffle is used to accurately locate the starting point of the short side of the stator coil, and the inclined short side bending baffle and the long side bending baffle are used as the backing for the short side and long side bending of the stator coil respectively. The bending angle is accurate, and the stator coil can be bent and formed once, without the need to use two sets of tooling for two positionings, which significantly improves the bending quality and bending efficiency of the stator coil.

[0013] Advantages and features of the present invention will be illustrated and explained by the following non-limiting description of preferred embodiments thereof, which are given by way of example only with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an enlarged structural diagram of the stator coil;

[0015] Figure 2 is a top view of the present invention;

[0016] Figure 3 yes Figure 2 A-direction view;

[0017] Figure 4 It is an enlarged stereoscopic view of the copper bar positioning baffle;

[0018] Figure 5 It is an enlarged stereogram of the stopper;

[0019] Figure 6 It is a three-dimensional diagram of a long-side bending wrench. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] like Figure 2 and Figure 3As shown, the present invention comprises a bottom plate 1, a copper bar positioning baffle 2, a T-slot plate 3, a first horizontal side block 4, a second horizontal side block 5, a short side bending baffle 6, a long side bending baffle 7, a short side bending wrench 8 and a long side bending wrench 9. The bottom plate 1 is a rectangular flat plate, and the bottom plate 1 has a longitudinal T-slot 11 extending therethrough, and two transverse T-slots 12 extending therethrough, respectively perpendicularly intersecting the longitudinal T-slot 11. The copper bar positioning baffle 2 is fixed to the left end of the longitudinal T-slot 11, and is L-shaped, and the outer side surface of the short side of the L-shape is the positioning surface of the copper bar end.

[0022] The T-slot plate 3 is fixed at the intersection of the longitudinal T-slot 11 and a transverse T-slot 12, the first horizontal side block 4 and the second horizontal side block 5 are fixed at intervals in the middle of the longitudinal T-slot 11, and the first horizontal side block 4 and the second horizontal side block 5 and the adjacent side of the T-slot plate 113 form a conveying groove 110 for the copper strip 10, which guides the conveying of the copper strip 10 and improves the bending accuracy of the stator coil. The two ends of the inclined short side bending baffle 6 are respectively fixed to the left end of the first horizontal side block 4 and the upper side of the bottom plate 1 close to the longitudinal T-slot 11, and the two ends of the inclined long side bending baffle 7 are respectively fixed to the right end of the horizontal side 31 of the T-slot plate and the upper side of the bottom plate 1 close to the transverse T-slot 12. The inclined short side bending baffle 6 and the long side bending baffle 7 serve as the backing for the two ends of the stator coil to bend, respectively, which reduces the bending error of the angles at the two ends of the stator coil, improves the manufacturing accuracy of the stator coil, and makes it easier for the stator coil to be embedded in the stator slot. The short side bending wrench 8 is L-shaped, and the end of the L-shaped short side 81 is hinged to the left end of the horizontal side 31 of the T-slot plate, and the bending screw 82 is vertically fixed to the middle of the L-shaped short side 81. The left end of the long side bending wrench 9 is hinged to the right end of the horizontal side 31 of the T-slot plate.

[0023] like Figure 4 As shown, the lower part of the copper bar positioning baffle 2 is an I-shaped 21 structure, and the lower parts of the T-slot plate 3, the first horizontal side block 4 and the second horizontal side block 5 are also I-shaped 21 structures. The lower part of the I-shaped 21 is embedded in the corresponding T-slot, and the fixing screws 22 are vertically screwed into the copper bar positioning baffle 2, the T-slot plate 3, the first horizontal side block 4 and the second horizontal side block 5, respectively, and the bottom of the fixing screw 22 is against the bottom surface of the corresponding T-slot. The I-shaped 21 structure makes it very convenient for the copper bar positioning baffle 2, the T-slot plate 3, the first horizontal side block 4 and the second horizontal side block 5 to move in the corresponding T-slot, and the fixing of the fixing screw 22 is stable and reliable, which can meet the bending and forming of various types of marine generator stator coils, thereby improving the versatility of the present invention.

[0024] like Figure 2 As shown, the short side bending baffle 6 includes a short side baffle 61 and a baffle 62, and the long side bending baffle 7 includes a long side baffle 71 and a baffle 62. Figure 5As shown, the block 62 is in a right angle shape with a horizontal plane length greater than a vertical plane length, and a fixing groove 621 is provided in the longitudinal center of the horizontal plane. The block 62 of the short side bending baffle 6 is fixed obliquely on the upper side surface of the bottom plate 1 outside the first horizontal side block 4 by means of a fastening screw 63 passing through the fixing groove 621, and is located on one side of the longitudinal T-slot 11. The block 62 of the long side bending baffle 7 is fixed obliquely on the outside of the transverse T-slot 12 on the right side by means of a fastening screw 63 passing through the corresponding fixing groove 621. One end of the short side baffle 61 is fixed on the right end of the first horizontal side block 4, and the middle part of the short side bending baffle 6 abuts against the outside of the vertical surface of the corresponding block 62. The left end of the long side baffle 71 is fixed on one end of the horizontal side 31 of the T-slot plate, and the right end of the long side baffle 71 abuts against the outside of the vertical surface of the corresponding block 62.

[0025] The included angle α between the short side baffle 61 and one side of the longitudinal T-shaped slot 11 is equal to the included angle β between the long side baffle 71 and the other side of the longitudinal T-shaped slot 11. Figure 1 The bending angle A and the bending angle B of the stator coil are equal, and α, β, A and B are all 58.2°.

[0026] A plurality of bending screw fixing holes 811 arranged at intervals are provided on the L-shaped short side 81 of the short side bending wrench 8 to meet the needs of bending the short sides of stator coils of different types of marine generators. The distance B between the lower side of the short side bending wrench 8 and the upper side of the bottom plate 1 is greater than the thickness C of the copper bar positioning baffle 2, the T-slot plate 3 and the first horizontal side block 4. When the short side bending wrench 8 bends the copper bar 10 through the bending screw 82, it will not interfere with the copper bar positioning baffle 2, the T-slot plate 3 and the first horizontal side block 4.

[0027] like Figure 6 As shown, a copper bar support block 91 extends laterally from the lower middle side of the long side bending wrench 9. When the long side 200 of the stator coil is bent, the copper bar support block 91 supports the copper bar 10 to prevent the copper bar 10 from warping and deformation, thereby eliminating the process of plane shaping.

[0028] The working process of the present invention is as follows:

[0029] 1. Insert the I-shaped portions 21 at the bottom of the copper bar positioning baffle 2, the T-slot plate 3, the first horizontal side block 4 and the second horizontal side block 5 into the corresponding T-slots respectively.

[0030] 2. According to the positions of the corresponding bending points of the short side 100 and the long side 200 of the stator coil, adjust the positions of the copper bar positioning baffle 2, the T-slot plate 3, the first horizontal side baffle 4 and the second horizontal side baffle 5 and fix them with fixing screws 22 respectively, and then fix the short side bending baffle 6 and the long side bending baffle 7 at corresponding positions on the bottom plate 1 at an angle.

[0031] 3. Screw the bending screw 82 onto the middle portion of the L-shaped short side 81 of the short side bending wrench 8 , and make the bottom end of the bending screw 82 contact the upper side surface of the bottom plate 1 .

[0032] 4. Insert the copper bar 10 into the conveying trough 110, and make the end of the copper bar 10 rest against the positioning surface of the end of the copper bar positioning baffle 2. Turn the short side bending wrench 8 clockwise, bend one end of the copper bar 10 through the bending screw 82 until it rests on the short side bending baffle 6, and the short side bending wrench 8 returns counterclockwise to complete the bending of the short side 100 of the stator coil. Then turn the long side bending wrench 9 clockwise to bend the other end of the copper bar 10 until it rests on the long side bending baffle 7. At this time, the copper bar support block 91 of the long side bending wrench 9 supports the long side 200 of the stator coil. After maintaining this position for 4 to 6 seconds, the short side bending wrench 9 returns counterclockwise to take out the bent stator coil.

[0033] In addition to the above embodiments, the present invention may also have other implementation modes. Any technical solutions formed by equivalent replacement or equivalent transformation shall fall within the protection scope required by the present invention.

Claims

1. A stator coil bending tool, characterized in that: The invention comprises a bottom plate, a copper bar positioning baffle, a T-slot plate, a first horizontal side block, a second horizontal side block, a short side bending baffle, a long side bending baffle, a short side bending wrench and a long side bending wrench. The bottom plate is a rectangular flat plate. A through longitudinal T-slot is provided in the bottom plate in the longitudinal direction. Two transverse T-slots are provided in the transverse direction of the bottom plate, which are respectively perpendicular to the longitudinal T-slot and intersect with the longitudinal T-slot. The copper bar positioning baffle is fixed on one end of the longitudinal T-slot. The T-slot plate is fixed at the intersection of the longitudinal T-slot and a transverse T-slot. The first horizontal side block and the second horizontal side block are fixed at intervals in the middle of the longitudinal T-slot. A copper strip conveying groove is formed between a horizontal side block and a second horizontal side block and the adjacent side of the T-slot plate; two ends of the inclined short side bending baffle are respectively fixed to one end of the first horizontal side block and the upper side of the bottom plate close to the longitudinal T-slot, and two ends of the inclined long side bending baffle are respectively fixed to one end of the horizontal side of the T-slot plate and the upper side of the bottom plate close to the transverse T-slot; the short side bending wrench is L-shaped, the end of the L-shaped short side is hinged to one end of the horizontal side of the T-slot plate, and the bending screw is vertically fixed to the middle part of the L-shaped short side; one end of the long side bending wrench is hinged to the other end of the horizontal side of the T-slot plate; The lower parts of the copper bar positioning baffle, the T-slot plate, the first horizontal side block and the second horizontal side block are all I-shaped structures, and the I-shaped lower parts are embedded in the corresponding T-slots; the fixing screws are vertically screwed into the copper bar positioning baffle, the T-slot plate, the first horizontal side block and the second horizontal side block, respectively, and the bottom of the fixing screws abuts against the bottom surface of the T-slot; The short side bending baffle includes a short side baffle and a baffle, and the long side bending baffle includes a long side baffle and a baffle; the baffle is in a right angle shape with a horizontal plane length greater than a vertical plane length, and a fixing groove is opened in the longitudinal center of the horizontal plane; the baffle of the short side bending baffle is obliquely fixed to the upper side surface of the bottom plate outside the first horizontal side baffle by a fastening screw passing through the fixing groove, and is located on one side of the longitudinal T-slot; the baffle of the long side bending baffle is obliquely fixed to the outside of the transverse T-slot by a fastening screw passing through the corresponding fixing groove; one end of the short side baffle is fixed to one end of the first horizontal side baffle, and the middle part of the short side baffle abuts against the outside of the corresponding baffle vertical surface; one end of the long side baffle is fixed to one end of the horizontal side of the T-slot plate, and the other end of the long side baffle abuts against the outside of the corresponding baffle vertical surface.

2. The stator coil bending tool according to claim 1, characterized in that: The copper bar positioning baffle is L-shaped, and the outer side surface of the short side of the L-shape is the positioning surface of the copper bar end.

3. The stator coil bending tool according to claim 1, characterized in that: A plurality of bending screw fixing holes are arranged at intervals on the L-shaped short side of the short side bending wrench, and the distance C between the lower side of the short side bending wrench and the upper side of the bottom plate is greater than the thickness D of the copper bar positioning baffle, the T-slot plate and the first horizontal side block.

4. The stator coil bending tool according to claim 1, characterized in that: A copper bar support block is laterally extended from the lower side of the middle part of the long side bending wrench.

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