TWI717236B - Test platform of iron core and its test method - Google Patents

Abstract

A test platform for the superposition force of an iron core and a test method thereof. The test platform includes a base unit, a power unit, a sensing unit, and two fixing units. The base unit includes a base extending along a first direction, a first end wall standing on one end of the base, and a second end wall standing on the other end of the base. The power unit includes a first transmission mechanism and a second transmission mechanism. The sensing unit is fixed on the second end wall and used for sensing the force value. The fixing units are respectively glued to opposite sides of the iron core along the first direction. One fixing unit is connected to the sensing unit, and the other fixing unit is connected to the first transmission mechanism and can be driven along the first direction mobile. The iron core is fixed on the fixing units by bonding instead of clamping, which can avoid interference.

Description

Iron core test platform and test method

The invention relates to a test platform and a test method, in particular to a test platform and a test method for measuring the stacking force of an iron core.

Motor cores are usually made of multiple self-adhesive coated electromagnetic steel sheets through processes such as stamping, lamination, pressure, heating, etc., so that the coating film of the electromagnetic steel sheets can be adhered to each other. In order to understand the iron The core processing quality and confirmation of processing parameters require measuring equipment to determine the core's stacking force.

Referring to Figures 1 and 2, there is a measuring device 1 for measuring the pulling force of a resistance-type strain gauge. It includes a base 11, a cantilever 12 that can be controlled to move up and down along the base 11, and a cantilever 12 at the end The load hook 13, a material clamping mechanism 14 arranged on the pedestal 11 and located directly below the load hook 13, and a hanging below the load hook 13 and located along the height direction of the load hook 13 And the clamp 15 between the material clamping mechanism 14. In use, the lower end of the test piece is clamped through the material clamping mechanism 14 located below, and the upper end of the test piece is clamped by the clamp 15, and then the cantilever 12 is driven to move upward, so that the upper and lower ends of the test piece are subjected to Pulling outwards until the test piece breaks or falls off, the upper limit of the pulling force that the test piece can withstand is detected through the strain gauge set on the load hook 13.

Although the measuring device 1 can measure the tensile force according to the above-mentioned method, when applied to an iron core, an iron core made of a plurality of ring-shaped electromagnetic steel sheets laminated in the axial direction will be affected by the clamp 15 and The clamping force of the material clamping mechanism 14 is squeezed in the circumferential direction. In addition, the clamping force must be greater than the pulling force, which may cause the electromagnetic steel sheet to deform due to the extrusion, resulting in the electromagnetic steel sheet Interlayer gaps are generated, which affect the accuracy of the measurement. In addition, the measurement method of the measurement device 1 being pulled in the height direction will also interfere with the detection due to the weight of the iron core itself.

Therefore, the purpose of the present invention is to provide a test platform that can reduce interference factors and improve accuracy.

Therefore, the test platform of the iron core of the present invention includes a base unit, a power unit, a sensing unit, and two fixed units. The base unit includes a base extending along a first horizontal direction, a first end wall erected on one end of the base, and a first end wall standing on the other end of the base along with the first end wall. Second end walls spaced apart in directions. The power unit includes a first transmission mechanism arranged on the first end wall, and a second direction that can be operated to move along a second direction that is perpendicular to the first direction and extends horizontally, and is linked to the second transmission mechanism of the first transmission mechanism. Transmission mechanism. The sensing unit is fixed on the second end wall and used for sensing the force value. The fixing units are located on the base unit and are respectively glued to opposite sides of the iron core along the first direction. One fixing unit penetrates the second end wall and is connected to the sensing unit, and the other fixing unit is connected The first transmission mechanism can be driven to move along the first direction.

Another object of the present invention is to provide a test method of the test platform.

Therefore, the test method of the present invention includes a preliminary step and a test step. In the preliminary step, the opposite sides of an iron core are respectively glued on the fixing units so that the iron core is located between the fixing units. In the test step, the second transmission mechanism is operated to move the second transmission mechanism along the second direction. When the second transmission mechanism moves, the first transmission mechanism is linked to make the first transmission mechanism move along the first transmission mechanism. Pull the corresponding fixed unit in one direction to move the fixed unit away from another fixed unit, so that both sides of the iron core are subjected to an outward pulling force. The sensing unit detects and displays the value of the pulling force.

The effect of the present invention is that the iron core is fixed on the fixing units by bonding instead of clamping, so the iron core will not be interfered by radial clamping force during the test. On the other hand, the iron core The core is drawn in the first horizontal direction, which can prevent its own weight from affecting the test results and further improve the measurement accuracy.

3, 4, and 5, an embodiment of the laminated force test platform 2 of the iron core of the present invention includes a base unit 3, a power unit 4 arranged on the base unit 3, and two The fixing unit 5 on the base unit 3 and a sensing unit 6 arranged on the base unit 3. Define a first direction A extending horizontally, a second direction B extending horizontally and perpendicularly to the first direction A, and a third direction extending along the height direction perpendicular to the first direction A and the second direction B C. The base unit 3 includes a base 31 placed on a plane and extending along the first direction A, a first end wall 32 standing on one end of the base 31, and a second end wall 32 standing on the other end of the base 31. The end wall 33 and a sliding rail 34 arranged on the top surface of the first end wall 32. The first end wall 32 and the second end wall 33 are spaced apart from each other along the first direction A, and both extend along the second direction B. The sliding rail 34 is fixed to the first end wall 32 in a locking or integral manner, and extends along the second direction B.

The power unit 4 includes a first transmission mechanism 41 disposed on the first end wall 32 and a second transmission mechanism 42 linked to the first transmission mechanism 41. The first transmission mechanism 41 has a ball screw 411 rotatably passing through the first end wall 32 along the first direction A, and a ball screw 411 screwed on the ball screw 411 and located in the first direction A along the first direction A. The drive gear 412 outside the one end wall 32. The second transmission mechanism 42 has a sliding table 421 slidably disposed on the slide rail 34, two transmission gears 422 pivoted on the first end wall 32 and meshed with each other, and a sliding table 421 slidably disposed on the slide rail 34 B is a bearing 423 spaced apart from the first end wall 32 and the sliding platform 421, two sliding rods 424 passing through the bearing 423 along the second direction B and inserted on the first end wall 32, a A rack 425 fixed on the bottom surface of the sliding table 421 and meshed with one of the transmission gears 422, and an adjusting screw rotatably pierced through the socket 423 along the second direction B and inserted in the rack 425 426. The socket 423 is connected to the first end wall 32 through the sliding rods 424, but of course, the first end wall 32 can also be directly connected to the socket 423 without the sliding rods 424. The transmission gears 422 are located outside the first end wall 32 along the first direction A, and one of the transmission gears 422 meshes with the rack 425 and the other transmission gear 422 meshes with the driving gear 412. In this embodiment, the number and size of the teeth of the transmission gears 422 vary according to requirements, and the number and setting positions can also be changed according to actual transmission requirements.

Referring to FIGS. 3, 5, and 6, the fixing units 5 are spaced apart from each other along the first direction A and located between the first end wall 32 and the second end wall 33. Each fixing unit 5 includes an inner jig 51 that is in the shape of a plate and is arranged upright, an outer jig 52 located outside the inner jig 51 along the first direction A and used to limit the inner jig 51, and A connecting member 53 extending outward along the first direction A from the outer surface of the outer jig 52. The outer jig 52 has a plate body 521 extending along the third direction C, at least one limiting latch 522 fixed on the plate body 521 along the third direction C, and a plurality of plates along the second direction B The fixing tenons 523 are detachably provided on both sides of the board 521. In this embodiment, the fixing units 5 have a different number of limit latches 522 and fixing latches 523 with slightly different installation positions, and one of the fixing units 5 has four pairs in pairs along the third direction. C are respectively provided on the limiting latches 522 on both sides of the plate body 521, and four fixed latches 523 arranged in pairs. A gap for the inner jig 51 to slide along the second direction B is formed between the limit latches 522 and the plate body 521, so that the limit latches 522 move in the first direction A and the The third direction C is the upper limit of the inner jig 51, and the fixing tenons 523 can be detachably fixed to the plate body 521 through hexagon socket screws or other fixing parts, so that the inner jig 51 is along the second The direction B is restricted, so as to be fixed to the outer jig 52. The other fixing unit 5 has only one limiting latch 522, and it is located between a set of limiting latches 522 of the foregoing fixing unit 5 along the second direction B. In addition, the fixing unit 5 also has two fixing The locking tenons 523, similarly, each fixing tenon 523 is located between one of the fixing tenons 523 of the aforementioned fixing unit 5 along the third direction C. This design enables the fixing units 5 to be mutually aligned. The connecting piece 53 of the fixing unit 5 close to the first end wall 32 is penetrated by the ball screw 411, so that the connecting piece 53 is connected to the ball screw 411. The connecting member 53 is also disposed on the base 31 to move along the first direction A through the sliding rail mechanism 35. The connecting member 53 of the fixing unit 5 close to the second end wall 33 penetrates the second end wall 33 and connects to the sensing unit 6. The sensing unit 6 includes a load cell 61 fixed to the outer surface of the second end wall 33 along the first direction A and connected to the corresponding connecting member 53, a signal amplifier 62 electrically connected to the load cell 61, and a A numerical display 63 that is electrically connected to the signal amplifier 62 and displays the power value.

The testing method of this embodiment includes a preliminary step and a testing step. In this preparatory step, an iron core D is prepared by stacking a plurality of annular electromagnetic steel sheets, and the opposite sides (annular surfaces) of the iron core D are respectively glued in the inner jigs 51 On the side, part of the fixing tenons 523 of each outer jig 52 is then detached to put the inner jigs 51 into the outer jigs 52 respectively, and then the aforementioned fixing tenons 523 are locked back to make the The inner jigs 51 are fixed to the outer jigs 52 respectively.

In the test step, the user can drive the adjusting screw 426 to rotate through the handle or other elements that are easy to apply force, and drive the rack 425 and the sliding table 421 along the second direction B (that is, the The adjustment screw 426 moves in the axial direction, thereby driving the transmission gears 422 and the driving gear 412 that mesh with each other to rotate. When the driving gear 412 rotates, the ball screw 411 is driven to rotate through the threads formed on the inner wall surface, so that the The ball screw 411 and the connecting member 53 connected to the ball screw 411 move together in the first direction A. As a result, the connecting member 53 will pull the corresponding outer jig 52 and inner jig along the first direction A. With 51, both sides of the iron core D are subjected to an outward pulling force. The load cell 61 detects the force value of the pulling force and displays the value on the numerical display 63 through the signal amplifier 62. When the pulling force received by the iron core D exceeds the upper limit, the iron core D will peel off. At this time, the value displayed by the numerical display 63 is the superimposing force of the iron core D.

It should be noted that the iron core D is adhered to the inner jigs 51 by bonding. After the test is completed, the inner jigs 51 and the iron core D can be discarded directly. If used, the glue on the inner jig 51 can be removed, and the inner surface can be restored to be flat.

In summary, the present invention draws the iron core D in the horizontal direction to prevent the iron core D from being affected by its own weight during the measurement process, and the iron core D is fixed to the inner sides by bonding. On the tool 51, this non-clamping arrangement can prevent the iron core D from being subjected to forces in other directions and reduce interference from other factors, thereby improving the accuracy of measurement, so it can indeed achieve the purpose of the invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

2: test platform 3: Base unit 31: Base 32: The first end wall 33: second end wall 34: Slide 35: Slide rail mechanism 4: power unit 41: The first transmission mechanism 411: Ball Screw 412: drive gear 42: The second transmission mechanism 421: Sliding Table 422: Transmission Gear 423: Socket 424: Slider 425: rack 426: Adjust screw 5: fixed unit 51: Inside fixture 52: Outer jig 521: Board 522: Limiting Tenon 523: fixed tenon 53: Connector 6: Sensing unit 61: load element 62: signal amplifier 63: Numerical display A: First direction B: second direction C: Third party D: Iron core

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a perspective view illustrating a conventional drawing force measurement equipment; Figure 2 is a perspective view illustrating a load hook 13 and a clamp of the measuring device; 3 and 4 are three-dimensional views from different viewing angles, illustrating an embodiment of the laminated force test platform of the iron core of the present invention; Figure 5 is a top view illustrating the top view of this embodiment; and Fig. 6 is a perspective view illustrating two fixing units in this embodiment.

2: test platform

3: Base unit

31: Base

32: The first end wall

33: second end wall

34: Slide

35: Slide rail mechanism

4: power unit

41: The first transmission mechanism

411: Ball Screw

412: drive gear

42: The second transmission mechanism

421: Sliding Table

422: Transmission Gear

423: Socket

424: Slider

425: rack

426: Adjust screw

5: fixed unit

52: Outer jig

53: Connector

6: Sensing unit

61: load element

62: signal amplifier

63: Numerical display

A: First direction

B: second direction

C: Third party

Claims (8)

A test platform for iron cores, including: A base unit includes a base extending along a first horizontal direction, a first end wall erected on one end of the base, and a first end wall standing on the other end of the base along with the first end wall. Second end walls spaced in one direction; A power unit includes a first transmission mechanism arranged on the first end wall, and a second direction that can be operated to move along a second direction that is perpendicular to the first direction and extends horizontally, and is linked to the second transmission mechanism of the first transmission mechanism. Transmission mechanism A sensing unit fixed on the second end wall and used for sensing the force value; and Two fixing units are located on the base unit and are respectively bonded to opposite sides of the iron core along the first direction. One fixing unit penetrates the second end wall and is connected to the sensing unit, and the other fixing unit is connected The first transmission mechanism can be driven to move along the first direction. The test platform of the iron core according to claim 1, wherein each fixing unit includes an inner jig for bonding the iron core and an outer jig for fixing the inner jig in a detachable manner. The test platform of the iron core according to claim 2, wherein each fixing unit further includes a connecting piece extending outward from the outer jig along the first direction, and the connecting pieces of the fixing units are respectively connected to the sensing Unit and the first transmission mechanism. The test platform of the iron core according to claim 3, wherein each fixture on the outer side of the fixing unit has a plate body extending in a third direction perpendicular to the first direction and the second direction, and at least one plate extending along the second direction Limiting tenons arranged on the plate body in three directions, and a plurality of fixed tenons detachably arranged on both sides of the plate body along the second direction, the limiting tenons allow the inner jig to move along the Sliding in the second direction, and upper limit the inner jig in the first direction and the third direction, and the fixed tenons upper limit the inner jig in the second direction. The test platform of the iron core according to claim 1, wherein the base further includes a slide rail arranged on the first end wall and extending along the second direction, and the first transmission mechanism of the power unit has a rotatable The first end wall is penetrated and connected to the ball screw of the corresponding fixed unit, and a driving gear screwed on the ball screw and can be driven by the second transmission mechanism to rotate the ball screw. The test platform of the iron core according to claim 5, wherein the second transmission mechanism of the power unit has a sliding table slidably arranged on the sliding rail, a sliding table along the second direction and the first end wall A socket spaced apart from the sliding table, at least one transmission gear engaged with the driving gear and pivoted on the first end wall, a rack fixed under the sliding table and capable of driving the at least one transmission gear, and An adjusting screw that rotatably penetrates the socket along the second direction and is inserted into the rack can drive the rack to move in the second direction when the adjusting screw is rotated. The test platform of the iron core according to claim 1, wherein the sensing unit includes a load cell for measuring the force value, a signal amplifier electrically connected to the load cell, and a signal amplifier electrically connected to the signal amplifier and displaying the force Numerical display of the value. A test method of the test platform as described in claim 1, including: A preliminary step, sticking the opposite sides of an iron core to the fixing units respectively so that the iron core is located between the fixing units; and In a test step, the second transmission mechanism is operated to move the second transmission mechanism in the second direction. When the second transmission mechanism moves, the first transmission mechanism is linked to make the first transmission mechanism move in the first direction. Pull the corresponding fixed unit to move the fixed unit away from another fixed unit, so that both sides of the iron core are subjected to an outward pulling force. The sensing unit detects and displays the value of the pulling force.

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