阅读说明：本技术 一种用于电流互感器的金属件及其加工机构 (Metal piece for current transformer and machining mechanism thereof ) 是由 何嘉杰 于 2021-08-27 设计创作，主要内容包括：本申请涉及金属件加工的领域,尤其是涉及一种用于电流互感器的金属件及其加工机构,其包括连接框和连接片,连接片设置在连接框内,连接框包括弧形段、第一连接段和第二连接段,第一连接段和第二连接段分别设置在弧形段的两端；连接片一端与第一连接段连接,另一端设有从动块,第二连接段上开设有供从动块滑动的滑槽,第二连接段远离弧形段的一端设有拨块。本申请利用拨块对拨动从动块,使从动块带动第一连接片靠近第二连接段,实现对气隙的调节。(The application relates to the field of metal part machining, in particular to a metal part for a current transformer and a machining mechanism of the metal part, wherein the metal part comprises a connecting frame and a connecting sheet, the connecting sheet is arranged in the connecting frame, the connecting frame comprises an arc-shaped section, a first connecting section and a second connecting section, and the first connecting section and the second connecting section are respectively arranged at two ends of the arc-shaped section; connecting piece one end is connected with first linkage segment, and the other end is equipped with the driven piece, sets up on the second linkage segment and supplies the gliding spout of driven piece, and the one end that the arc section was kept away from to the second linkage segment is equipped with the shifting block. This application utilizes the shifting block to stir the driven piece, makes the driven piece drive first linkage piece and is close to the second linkage segment, realizes the regulation to the air gap.)

1. The utility model provides a metalwork for current transformer, includes linking frame (1) and connection piece (2), connection piece (2) set up in linking frame (1), its characterized in that: the connecting frame (1) comprises an arc-shaped section (11), a first connecting section (12) and a second connecting section (13), wherein the first connecting section (12) and the second connecting section (13) are respectively arranged at two ends of the arc-shaped section (11);

one end of the connecting piece (2) is connected with the first connecting section (12), the other end of the connecting piece is provided with the driven piece (3), a sliding groove (15) for the driven piece (3) to slide is formed in the second connecting section (13), and a shifting block (14) is arranged at one end, far away from the arc-shaped section (11), of the second connecting section (13).

2. The metal piece for a current transformer according to claim 1, wherein: the driven block (3) comprises a connecting portion (31) and an abutting portion (32), the abutting portion (32) is arranged on one side, facing the shifting block (14), of the connecting portion (31), and the abutting portion (32) is connected with the connecting piece (2) through the connecting portion (31).

3. The metal piece for a current transformer according to claim 2, wherein: the connecting part (31) is provided with a yielding groove (16), and the inner wall of the yielding groove (16) is obliquely arranged.

4. A metal member processing mechanism for processing a metal member for a current transformer according to any one of claims 1 to 3, characterized in that: including base (5) and drift (4), drift (4) set up the top at base (5), be equipped with limiting plate (6) on base (5), be equipped with locating plate (7) on limiting plate (6), offer location chamber (9) that are used for fixing a position the metalwork on locating plate (7), locating plate (7) deviate from one side of limiting plate (6) and are equipped with centre gripping subassembly (8) that are used for pressing from both sides tight metalwork.

5. A metal working machine according to claim 4, characterized in that: the clamping assembly (8) comprises a clamping plate (81) and a pressing plate (82), an installation cavity (83) is formed in one surface, facing the positioning plate (7), of the clamping plate (81), and the pressing plate (82) is arranged in the installation cavity (83).

6. A metal working machine according to claim 5, characterized in that: all be equipped with location strip (84) on the relative lateral wall of clamp plate (82), splint (81) set up between location strip (84).

7. A metal working machine according to claim 4, characterized in that: the side wall opposite to the punch (4) is provided with a guide sheet (44), and the bottom end of the guide sheet (44) is provided with a guide inclined plane (45).

8. A metal working machine according to claim 4, characterized in that: the punch (4) comprises a base body (41), a punching part (42) and a positioning part (43), wherein the positioning part (43) is arranged on the bottom surface of the base body (41), the punching part (42) is arranged on the bottom surface of the base body (41), and a gap exists between the positioning part (43) and the punching part (42).

9. A metal working machine according to claim 8, characterized in that: one surface of the stamping part (42) facing the positioning part (43) is obliquely arranged, so that the gap between the stamping part (42) and the positioning part (43) is gradually reduced along the direction close to the base body (41).

10. A metal working machine according to claim 8, characterized in that: and the bottom end of one surface of the positioning part (43) facing the stamping part (42) is provided with an arc transition structure.

Technical Field

The application relates to the field of metal part machining, in particular to a metal part for a current transformer and a machining mechanism of the metal part.

Background

A current transformer is a device that converts a large current on a primary side into a small current on a secondary side according to the principle of electromagnetic induction. The iron core part of the current transformer is generally formed by overlapping a plurality of metal pieces with specific shapes, and then a coil is arranged on the metal pieces to finally manufacture the current transformer.

At present, an air gap is formed in a metal piece, the influence of a magnetic field on a coil is reduced by changing the size of the air gap, and the output current is adjusted.

The air gap is generally arranged on the metal part, the metal part is machined and formed at the same time, and when the size of the air gap is needed, only the metal part can be replaced.

Disclosure of Invention

In order to realize the adjustment of the air gap, the application provides a metal piece for a current transformer and a machining mechanism thereof.

On the one hand, the application provides a metalwork for current transformer, adopts following technical scheme:

a metal piece for a current transformer comprises a connecting frame and a connecting piece, wherein the connecting piece is arranged in the connecting frame, the connecting frame comprises an arc-shaped section, a first connecting section and a second connecting section, and the first connecting section and the second connecting section are respectively arranged at two ends of the arc-shaped section;

one end of the connecting piece is connected with the first connecting section, the other end of the connecting piece is provided with the driven piece, a sliding groove for the driven piece to slide is formed in the second connecting section, and a shifting block is arranged at one end, far away from the arc-shaped section, of the second connecting section.

By adopting the technical scheme, the gap between the driven block and the inner wall of the sliding groove is the air gap of the metal piece, and the driven block is shifted by the shifting block to slide in the sliding groove, so that the air gap of the metal piece is adjusted.

Optionally, the driven block includes a connecting portion and an abutting portion, the abutting portion is disposed on one side of the connecting portion facing the shifting block, and the connecting portion connects the abutting portion and the second connecting section.

Through adopting above-mentioned technical scheme, connecting portion and spout inner wall constitute the air gap, and butt portion is stirred to the shifting block, moves in the spout by butt portion drive connecting block, adjusts the air gap.

Optionally, the connecting portion is provided with a yielding groove, and the inner wall of the yielding groove is obliquely arranged.

By adopting the technical scheme, the abdicating groove enables the shifting block after deformation to enter, the contact area between the shifting block and the abutting part is enlarged, and the connection between the shifting block and the abutting part is more stable.

On the other hand, the application provides a metalworking mechanism, adopts following technical scheme:

the utility model provides a metalwork machining mechanism for processing foretell metalwork for current transformer, includes base and drift, the drift sets up the top at the base, be equipped with the limiting plate on the base, be equipped with the locating plate on the limiting plate, set up the location chamber that is used for fixing a position the metalwork on the locating plate, the locating plate deviates from and is equipped with the centre gripping subassembly that is used for pressing from both sides tight metalwork in the one side of limiting plate.

Through adopting above-mentioned technical scheme, the centre gripping subassembly is at the location intracavity with the metalwork centre gripping of polylith superpose, makes things convenient for the drift to carry out the punching press to the metalwork, utilizes the punching press effect of drift to realize the regulation to the metalwork air gap.

Optionally, the clamping assembly comprises a clamping plate and a pressing plate, an installation cavity is formed in one surface, facing the positioning plate, of the clamping plate, and the pressing plate is arranged in the installation cavity.

Through adopting above-mentioned technical scheme, the clamp plate slides in the installation cavity, and the area that blocks of clamp plate to the location chamber is adjusted to the convenience according to the in service behavior of reality, makes things convenient for the metalwork to place in the location chamber or take out from the location intracavity.

Optionally, the opposite side walls of the pressing plate are provided with positioning strips, and the clamping plate is arranged between the positioning strips.

Through adopting above-mentioned technical scheme, the location strip is fixed a position the clamp plate in the installation intracavity, conveniently controls the effect that blocks of clamp plate to the metalwork.

Optionally, the side wall opposite to the punch is provided with a guide piece, and the bottom end of the guide piece is provided with a guide inclined plane.

By adopting the technical scheme, when the metal piece is punched by the punch, the overlapped metal piece is gathered towards the middle by the guide sheet, so that the punching precision of the punch is improved, and the adjusting precision of the air gap is improved.

Optionally, the punch includes a base, a stamping portion and a positioning portion, the positioning portion is disposed on the bottom surface of the base, the stamping portion is disposed on the bottom surface of the base, and a gap exists between the positioning portion and the stamping portion.

By adopting the technical scheme, the positioning part stops the tendency of deflection of the metal piece during stamping, and the stamping part completes stamping of the metal piece to realize adjustment of the air gap.

Optionally, one surface of the stamping part facing the positioning part is obliquely arranged, so that a gap between the stamping part and the positioning part is gradually reduced along a direction close to the substrate.

By adopting the technical scheme, the stamping stroke of the stamping part is controlled, the deformation volume of the upper shifting block of the metal piece is controlled, and the air gap is accurately adjusted.

Optionally, the bottom end of the positioning part facing to one surface of the stamping part is provided with an arc transition structure.

By adopting the technical scheme, the arc transition structure reduces the impact between the positioning part and the metal part in the stamping process, and reduces the abrasion between the positioning part and the metal part.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the shifting block is used for shifting the driven block to slide in the sliding groove, so that the air gap of the metal piece is adjusted;

2. the stroke of the punch is controlled, the deformation volume of the shifting block on the metal piece is controlled, the movement of the driven block is controlled, namely the air gap is adjusted, and the air gap is conveniently and quickly adjusted.

Drawings

Fig. 1 is a schematic view showing a structure of a metal member.

Fig. 2 is a partially enlarged schematic view at a in fig. 1.

FIG. 3 is a schematic view of an air gap of a magnetic circuit embodying a metallic component.

Fig. 4 is a schematic view showing the structure of the processing mechanism.

Fig. 5 is a schematic view showing the structure of the punch.

Fig. 6 is an exploded view showing the structure of the guide vane.

Fig. 7 is an exploded view showing the structure of the clamping assembly.

FIG. 8 is a schematic diagram showing the position of the platen prior to stamping.

Fig. 9 is a schematic view showing the position of the pressing plate during the punching process.

Description of reference numerals: 1. a connecting frame; 11. an arc-shaped section; 12. a first connection section; 13. a second connection section; 14. shifting blocks; 15. a chute; 16. a yielding groove; 17. a separator; 18. a shunt magnetic circuit air gap; 2. connecting sheets; 3. a driven block; 31. a connecting portion; 32. an abutting portion; 4. a punch; 41. a substrate; 42. a punching part; 43. a positioning part; 44. a guide piece; 45. a guide slope; 5. a base; 6. a limiting plate; 7. positioning a plate; 8. a clamping assembly; 81. a splint; 82. pressing a plate; 83. a mounting cavity; 84. a positioning bar; 9. a positioning cavity.

Detailed Description

The present application is described in further detail below with reference to figures 1-9. The dashed lines in the figures are for the purpose of providing a visual understanding of the various components, and are for reference only and have no practical purpose.

The embodiment of the application discloses a metal piece for a current transformer. Referring to fig. 1 and 2, the metalwork includes connection frame 1 and connection piece 2, and connection piece 2 sets up in connection frame 1, and connection frame 1 includes integrated into one piece's segmental arc 11, first linkage segment 12 and second linkage segment 13, and first linkage segment 12 and second linkage segment 13 set up respectively at 11 both ends of segmental arc, and connection piece 2 one end sets up on first linkage segment 12, connection piece 2 and first linkage segment 12 integrated into one piece.

Referring to fig. 1 and 2, the follower block 3 is integrally formed on the connecting piece 2 on the side facing the second connecting section 13, and the follower block 3 includes a connecting portion 31 and an abutting portion 32 which are integrally formed, and the abutting portion 32 is provided on the side of the connecting portion 31 facing the second connecting section 13. The second connecting section 13 is provided with a sliding slot 15, the driven block 3 can slide in the sliding slot 15, and a gap between the driven block 3 and the inner wall of the sliding slot 15 is a main magnetic circuit air gap. The end of the second connecting section 13 far away from the arc section 11 is integrally formed with a shifting block 14. And bending the shifting block 14 to enable the free end of the shifting block 14 to abut against the abutting part 32 of the driven block 3, and pushing the driven block 3 to slide in the sliding groove 15 by using the shifting block 14, so as to reduce the gap between the driven block 3 and the inner wall of the sliding groove 15, and realize the reduction of the air gap of the main magnetic path, namely the adjustment of the air gap of the main magnetic path.

Referring to fig. 1 and 2, the inner wall of the slide slot 15 is inclined, and the width of the slide slot 15 gradually decreases as the depth of the slide slot 15 increases. The side wall of the connecting portion 31 is inclined with respect to the inner wall of the slide groove 15. When the driven part piece slides in spout 15, not complete rectilinear motion, but have the arcuate motion of certain deflection, utilize the flaring setting of spout 15 to improve driven piece 3's appearance, make driven piece 3 remove can be inseparabler with the inner wall laminating of spout 15 when spout 15 is terminal, adjust more accurately to main magnetic circuit air gap.

Referring to fig. 1 and 2, the connecting portion 31 is provided with a relief groove 16, and an inner wall of the relief groove 16 is inclined, so that the width of the relief groove 16 is reduced as the depth of the relief groove 16 is increased. After the shifting block 14 is bent towards the driven block 3, the free end of the shifting block 14 enters the abdicating groove 16, the contact area between the shifting block 14 and the driven block 3 is enlarged, and the connection stability between the shifting block 14 and the driven block 3 is improved.

Referring to fig. 3, in some other embodiments, a separating plate 17 is integrally formed on the first connecting section 12, a gap between the separating plate 17 and the second connecting section 13 is a shunting air gap 18, and when the driven block 3 moves under the stirring of the shifting block 14, the driving connecting plate 2 is driven to move, so as to drive the first connecting section 12 to approach the second connecting section 13, and the second connecting section 13 drives the separating plate 17 to move towards the second connecting section 13, so as to adjust the shunting air gap 18.

The implementation principle of the metal piece for the current transformer in the embodiment of the application is as follows: the shifting block 14 is shifted towards the driven block 3, the shifting block 14 deforms and pushes the driven block 3 to slide in the sliding groove 15, and the air gap of the main magnetic circuit is adjusted by changing the gap between the driven block 3 and the inner wall of the sliding groove 15.

The embodiment of the application further discloses a metal part machining mechanism for processing the above metal part, including base 5 and drift 4, drift 4 sets up in the top of base 5, sets up drift 4 on the punching machine during use, utilizes the punching machine to drive drift 4 oscilaltion.

Referring to fig. 4, the punch 4 includes a base 41, a punched portion 42, and a positioning portion 43, which are integrally formed, the positioning portion 43 being provided on the bottom surface of the base 41, the punched portion 42 being provided on the bottom surface of the base 41, a gap being present between the punched portion 42 and the positioning portion 43.

Referring to fig. 5 and 6, the pressed portion 42 is inclined toward one surface of the positioning portion 43, and the gap between the pressed portion 42 and the positioning portion 43 is gradually reduced from the bottom to the top. The shifting block 14 of the metal piece is punched by the punch 4, the positioning part 43 is attached to the side wall of the metal piece, the positioning part 43 is used for blocking the tendency of deflection of the metal piece in the punching process, and the punching part 42 presses the shifting block 14 to enable the shifting block 14 to deform and push the driven block 3 to move. Since the side wall of the punching portion 42 is obliquely arranged, the punching portion 42 presses the dial 14 and gradually increases the pressing area of the dial 14, so that the deformation area of the dial 14 is increased. The air gap of the main magnetic circuit is adjusted by controlling the punching stroke of the punch 4.

Referring to fig. 5 and 6, the bottom end of one surface of the positioning portion 43 facing the punching portion 42 is provided with an arc transition structure, and by using the arc transition structure, when the positioning portion 43 contacts with a metal member, the relative movement between the positioning portion 43 and the metal member is smoother, and the abrasion between the positioning portion 43 and the metal member in the punching process is reduced.

Referring to fig. 5 and 6, a guide piece 44 is fixed to the opposite side wall of the punch 4, and a guide slope 45 is provided at the bottom end of the guide piece 44. The distance between the guide pieces 44 is equal to the thickness of the plurality of metal pieces after being stacked. 4 in the punching press processes down of drift, direction inclined plane 45 contacts with the metalwork at first, and direction inclined plane 45 promotes the metalwork and gathers together to the centre, and two blocks of deflector make the metalwork keep laminating with polylith metalwork centre gripping at last, conveniently stamp the same position of polylith metalwork, promote the punching press precision to the metalwork.

Referring to fig. 7, a limiting plate 6 is vertically fixed on the base 5, a positioning plate 7 is detachably connected to the side wall of the limiting plate 6, and a positioning cavity 9 for positioning a metal part is formed in the positioning plate 7. And a clamping assembly 8 is arranged on one surface of the positioning plate 7 departing from the limiting plate 6. The clamping assembly 8 and the limiting plate 6 clamp the multiple overlapped metal pieces in the positioning cavity 9, the metal pieces are prevented from inclining in the positioning cavity 9, and the stability of the metal pieces in the stamping process is improved.

Referring to fig. 7, the clamping assembly 8 includes a clamping plate 81 and a pressing plate 82, the clamping plate 81 is connected with the positioning plate 7 through a bolt, a mounting cavity 83 is opened on one surface of the clamping plate 81 facing the positioning plate 7, the pressing plate 82 is disposed in the mounting cavity 83, and the pressing plate 82 can slide in the mounting cavity 83. The opposite side walls of the pressing plate 82 are provided with positioning strips 84, and the clamping plate 81 is arranged between the two positioning strips 84.

Referring to fig. 8, before the metal member is placed in the positioning cavity 9, the pressing plate 82 is slid to one end of the mounting cavity 83, so that one positioning strip 84 is attached to the side wall of the clamping plate 81, blocking of the pressing plate 82 to the opening of the mounting cavity 83 is reduced, and the metal member is conveniently and quickly arranged in the positioning cavity 9.

Referring to fig. 9, before the metal member is stamped, the pressing plate 82 is slid to the other end of the mounting cavity 83, and the other positioning strip 84 is attached to the side wall of the clamping plate 81, so that the contact area between the pressing plate 82 and the metal member is increased, the pressing effect on the metal member is increased, and the stability of the metal member on the positioning plate 7 is improved.

The implementation principle of a metal part machining mechanism in the embodiment of the application is as follows: the metal member is placed on the positioning plate 7 and the pressing plate 82 is slid so that the pressing plate 82 clamps the metal member in the positioning chamber 9. The punch press is used for driving the punch 4 to punch the shifting block 14 of the metal part, the stroke of the punch 4 is controlled, the deformation volume of the shifting block 14 is controlled, and then the adjustment of the air gap of the main magnetic circuit of the current transformer is achieved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.