CN120467151A - A measuring tool and method for measuring the arc of a power module metal base plate - Google Patents
A measuring tool and method for measuring the arc of a power module metal base plateInfo
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- CN120467151A CN120467151A CN202510942569.8A CN202510942569A CN120467151A CN 120467151 A CN120467151 A CN 120467151A CN 202510942569 A CN202510942569 A CN 202510942569A CN 120467151 A CN120467151 A CN 120467151A
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- power module
- bottom plate
- probe
- metal bottom
- positioning column
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Abstract
The invention provides a radian measuring tool and a radian measuring method for a metal bottom plate of a power module, which have the advantages of low cost, greatly reduced equipment investment and cost for measuring the radian of the metal bottom plate, simple and convenient operation and capability of improving the radian measuring efficiency of the metal bottom plate.
Description
Technical Field
The invention belongs to the technical field of semiconductors, and relates to a radian measuring tool and a radian measuring method for a metal bottom plate of a power module.
Background
The power module is used as an important component of a power electronic system and is widely applied to the fields of industrial automation, electric automobiles, photovoltaic energy storage and the like, wherein the power module which uses a flat metal base plate to coat silicone grease and then is attached to a water channel radiator to indirectly dissipate heat is most widely applied.
Because the metal bottom plate (usually copper plate) is subjected to stress generated by mismatch of thermal expansion coefficients between materials and high temperature in the packaging process of the power module, in order to ensure the planeness of the contact surface between the metal bottom plate and the radiator, the metal bottom plate needs to be subjected to pre-bending design before packaging to offset deformation caused by the packaging process.
In general, a profiler or a 2.5-dimensional image measuring instrument is used for measuring the radian of a metal base plate in a packaged finished power module, the cost is high, and if the metal base plate serving as raw material is also subjected to radian measurement by using the profiler or the 2.5-dimensional image measuring instrument, the equipment investment expenditure is high, and the cost is high.
Therefore, how to provide a radian measuring tool and a measuring method for a metal bottom plate of a power module, so as to reduce equipment investment and expenditure and reduce cost is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a radian measuring tool and a measuring method for a metal bottom plate of a power module, which are used for solving the problem of high equipment investment for measuring the radian of the metal bottom plate in the prior art.
To achieve the above and other related objects, the present invention provides an arc measuring tool for a metal chassis of a power module, comprising:
the framework is provided with a first surface and a second surface which are oppositely arranged, the second surface of the framework is provided with a guide rail, and a through hole penetrating through the framework is formed in the framework in the direction of pointing to the second surface along the first surface of the framework;
The digital display dial indicator is provided with a dial indicator body part and a shrinkage probe which are connected, the dial indicator body part is arranged on the first surface of the framework and extends into the through hole, and the shrinkage probe protrudes out of the second surface of the framework;
the first sliding block is arranged on the guide rail, can move along the guide rail and can be fixed on the guide rail, and a first positioning column is arranged on one side, away from the framework, of the first sliding block;
the second sliding block is arranged on the guide rail, can move along the guide rail and can be fixed on the guide rail, a second positioning column is arranged on one side, away from the framework, of the second sliding block, and the first sliding block and the second sliding block are arranged on two sides of the contraction probe in a separated mode;
the limiting frame is positioned below the framework, a groove is arranged in the limiting frame, the depth of the groove is larger than the thickness of the power module metal bottom plate to be measured, the size of the groove is matched with that of the power module metal bottom plate, the groove is used for limiting the power module metal bottom plate, and the convex surface of the power module metal bottom plate faces towards the framework;
The power module comprises a power module metal bottom plate, a limiting frame, a first positioning column, a second positioning column, a shrinkage probe and a shrinkage probe, wherein the preset position of the limiting frame is provided with a first positioning hole, a second positioning hole and a probe perforation which penetrate through the limiting frame, the first positioning column can penetrate through the first positioning hole and the convex surface of the power module metal bottom plate to be contacted, the second positioning column can penetrate through the second positioning hole and the convex surface of the power module metal bottom plate to be contacted, the shrinkage probe can penetrate through the probe perforation and the convex surface of the power module metal bottom plate to be contacted, and the shrinkage probe can be compressed.
Optionally, the number of the first positioning holes is multiple, the number of the second positioning holes is multiple, a part of the first positioning holes and a part of the second positioning holes are separately arranged at two sides of the probe perforation in a first direction, a part of the first positioning holes and a part of the second positioning holes are separately arranged at two sides of the probe perforation in a second direction, and the first direction and the second direction are perpendicular.
Optionally, the first face of skeleton is equipped with the brace table, the brace table is used for supporting fixedly the amesdial body portion.
Optionally, a scale is arranged on the side surface of the framework, and the scale is used for reading the displacement positions of the first positioning column and the second positioning column.
Optionally, the first locating column is kept away from the one end of first slider and the second locating column is kept away from the one end of second slider all is equipped with spherical end.
Optionally, the diameter of the spherical end is 1 mm-4 mm.
Optionally, a spherical needle is arranged at one end of the shrink probe, which is far away from the framework.
Optionally, the diameter of the spherical needle ranges from 1mm to 4mm.
The invention also provides a radian measuring method of the metal bottom plate of the power module, which comprises the following steps:
Providing the radian measuring tool of the metal bottom plate of the power module, and fixing the first sliding block and the second sliding block to preset positions of the guide rail;
calibrating a first positioning column, a second positioning column and a shrinkage probe on a calibration platform, wherein the bottom ends of the first positioning column, the second positioning column and the shrinkage probe are positioned on the same plane after calibration;
placing a metal bottom plate of the power module to be measured in a groove of a limiting frame, aligning the first positioning column with a first positioning hole at a preset position, aligning the second positioning column with a second positioning hole at the preset position, wherein the shrinkage probe and the probe perforation are aligned;
And the movable framework moves along the direction towards the power module metal bottom plate, so that the first positioning column, the second positioning column and the power module metal bottom plate are contacted, wherein the shrinkage probe is contacted with the power module metal bottom plate and is compressed in the process of moving the framework, and the display number of the digital display dial indicator is recorded.
Optionally, the flatness of the calibration platform is-0.002mm to 0.002mm.
As described above, in the radian measuring tool and the measuring method for the metal bottom plate of the power module, the radian measuring tool is low in cost, the equipment investment and the cost for measuring the radian of the metal bottom plate are greatly reduced, the operation of the radian measuring tool is simple and convenient, and the radian measuring efficiency of the metal bottom plate can be improved.
Drawings
FIG. 1 is an exploded view of an arc measuring gauge for a power module metal chassis in accordance with an embodiment of the present invention.
Fig. 2 shows an assembly diagram of a skeleton, a digital display dial indicator, a first slider, and a second slider in an embodiment of the present invention.
FIG. 3 is a schematic diagram of a skeleton in an embodiment of the invention.
Fig. 4 is a top view of a limiting frame according to an embodiment of the invention.
Fig. 5 is a side view of a limiting frame according to an embodiment of the invention.
Fig. 6 is a top view of a metal chassis of a power module to be measured in an embodiment of the invention.
Fig. 7 is a side view of a metal chassis of a power module to be measured in an embodiment of the invention.
Fig. 8 is a schematic diagram showing contact between a shrink probe and a metal base of a power module in an embodiment of the invention.
FIG. 9 is a schematic diagram showing the compression of the shrink probe in an embodiment of the present invention.
Fig. 10 is a schematic diagram showing the arc measurement of the second span of the metal chassis of the power module in the X direction according to an embodiment of the present invention.
Fig. 11 is a schematic diagram showing the partitioning of different areas for the probe holes in the limiting frame according to an embodiment of the invention.
The element reference numerals indicate 1-skeleton, 100-guide rail, 101-through hole, 102-supporting table, 103-scale, 2-digital display dial indicator, 200-dial indicator body part, 201-shrinkage probe, 3-first slide block, 300-first positioning column, 4-second slide block, 400-second positioning column, 5-limit frame, 500-groove, 501-first positioning hole, 502-second positioning hole, 503-probe perforation and 6-power module metal base plate.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention.
Please refer to fig. 1 to 11. It should be noted that, the illustrations provided in the present embodiment merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.
Referring to fig. 1 to 5, the radian measuring tool for a metal bottom plate of a power module includes a skeleton 1, a digital display dial indicator 2, a first slider 3, a second slider 4, and a limiting frame 5, where the skeleton 1 has a first surface and a second surface that are oppositely disposed, the second surface of the skeleton 1 is provided with a guide rail 100, and in a direction along the first surface of the skeleton 1 pointing to the second surface, a through hole 101 penetrating through the skeleton 1 is provided in the skeleton 1; the digital display dial indicator 2 is provided with a dial indicator body 200 and a shrinkage probe 201 which are connected, the dial indicator body 200 is arranged on a first surface of the framework 1 and extends into the through hole 101, the shrinkage probe 201 protrudes out of a second surface of the framework 1, the first sliding block 3 is arranged on the guide rail 100, the first sliding block 3 can move along the guide rail 100 and can be fixed on the guide rail 100, a first positioning column 300 is arranged on one side, away from the framework 1, of the first sliding block 3, the second sliding block 4 is arranged on the guide rail 100, the second sliding block 4 can move along the guide rail 100 and can be fixed on the guide rail 100, a second positioning column 400 is arranged on one side, away from the framework 1, of the second sliding block 4, the first sliding block 3 and the second sliding block 4 are separately arranged on two sides of the shrinkage probe 201, the limiting frame 5 is arranged below the framework 1, a groove 500 is arranged in the limiting frame 5, the groove 500 is formed in the groove 500, the depth of the groove 500 is larger than the metal module to be tested, the metal module is matched with the metal module 500, the metal module to be tested in the metal module to be tested, the metal module is matched with the metal module 500, the metal module to be tested in the groove 500, the metal module is matched with the metal module to be tested to the groove 500, the convex surface of the power module metal bottom plate 6 faces the framework 1, a first positioning hole 501, a second positioning hole 502 and a probe penetrating hole 503 penetrating through the limiting frame 5 are arranged at preset positions of the limiting frame 5, the first positioning column 300 can penetrate through the first positioning hole 501 to be in contact with the convex surface of the power module metal bottom plate 6, the second positioning column 400 can penetrate through the second positioning hole 502 to be in contact with the convex surface of the power module metal bottom plate 6, the shrinkage probe 201 can penetrate through the probe penetrating hole 503 to be in contact with the convex surface of the power module metal bottom plate 6, and the shrinkage probe 201 can be compressed.
As an example, the skeleton 1 is made of a metal with higher strength and higher hardness, and has higher dimensional stability and wear resistance.
As an example, the first surface of the framework 1 is provided with a supporting table 102, the supporting table 102 is used for supporting and fixing the dial gauge body 200, specifically, a clamping groove is provided in the supporting table 102, a threaded hole penetrating through the supporting table 102 is provided on a side surface of the supporting table 102, the dial gauge body 200 is placed in the clamping groove, and the dial gauge body 200 is clamped and fixed on the first surface of the framework 1 by matching a fastening bolt with the threaded hole on the side surface of the supporting table 102.
As an example, the body of the framework 1, the support 102 and the guide rail 100 are integrally formed, thereby improving mechanical strength.
As an example, the side surface of the skeleton 1 is provided with a scale 103, the scale 103 is used for reading the displacement positions of the first positioning column 300 and the second positioning column 400, and the scale 103 may be formed by laser carving, pattern pasting, and the like. Specifically, the scale of the position corresponding to the shrink probe 201 is 0, and the number of scales 103 gradually increases in the direction along which the shrink probe 201 points to the first positioning column 300 and in the direction along which the shrink probe 201 points to the second positioning column 400, for example, the number of scales is 1cm, 2cm, 3cm, 4cm, 5cm, 6cm, or the like.
As an example, the shrinkage probe 201 is a spring shrinkage probe, and after the shrinkage probe 201 is shrunk, a reading can be made from the gauge head of the digital display dial gauge 2, and the shrinkage amount of the shrinkage probe 201 can be read.
As an example, a spherical needle is disposed at an end of the shrink probe 201 away from the skeleton 1, that is, at an end of the shrink probe 201 contacting the power module metal base plate 6, so as to avoid scratching the power module metal base plate 6 when the shrink probe 201 contacts the power module metal base plate 6, and specifically, a diameter range of the spherical needle is 1 mm-4 mm, and the spherical needle is selected according to requirements.
As an example, a threaded hole is formed in the first slider 3, a thread is formed at an end of the first positioning post 300 facing the first slider 3, the thread of the first positioning post 300 is matched with the threaded hole in the first slider 3 to fix the first positioning post 300 on the first slider 3, when the first slider 3 moves on the guide rail 100, the first positioning post 300 is driven to move, a threaded through hole is formed in the first slider 3, and when the first slider 3 moves to a target position, the first slider 3 is fixed on the guide rail 100 by matching a fastening bolt with the threaded through hole in the first slider 3.
Similarly, a threaded hole is formed in the second slider 4, a thread is formed at an end of the second positioning column 400 facing the second slider 4, the thread of the second positioning column 400 is matched with the threaded hole in the second slider 4 to fix the second positioning column 400 on the second slider 4, when the second slider 4 moves on the guide rail 100, the second positioning column 400 is driven to move, and a threaded through hole is formed in the second slider 4, when the second slider 4 moves to a target position, the second slider 4 is fixed on the guide rail 100 through matching of a fastening bolt and the threaded through hole in the second slider 4.
As an example, after the first positioning column 300 is mounted on the first slider 3 and the second positioning column 400 is mounted on the second slider 4, the bottom ends of the first positioning column 300 and the second positioning column 400 are on the same plane.
As an example, the end of the first positioning post 300, which is far away from the first slider 3, and the end of the second positioning post 400, which is far away from the second slider 4, are respectively provided with spherical ends, so as to avoid scratching the power module metal bottom plate 6 when the first positioning post 300, the second positioning post 400 and the power module metal bottom plate 6 are in contact.
As an example, the bodies of the first positioning column 300 and the second positioning column 400 are made of metal materials, spherical ends of the first positioning column 300 and the second positioning column 400 may be made of ruby, ceramic, white steel, tungsten steel, plastic steel, and other materials, and the diameters of the spherical ends may be 1 mm-4 mm, which is selected according to requirements.
As an example, in this embodiment, the number of the first positioning columns 300 is one, the number of the second positioning columns 400 is two, and the plurality of positioning columns are provided to stabilize the balance during measurement, so as to reduce the operation difficulty and the measurement error. In another example, the number of the first positioning columns 300 may be set to one, the number of the second positioning columns 400 may be set to one, or the sum of the numbers of the first positioning columns 300 and the second positioning columns 400 exceeds three, that is, the sum of the numbers of the first positioning columns 300 and the second positioning columns 400 may be selected to be 2-6, and the number may be selected according to the requirement.
As an example, the material of the limiting frame 5 may be metal, ceramic or bakelite, and in this embodiment, the material of the limiting frame 5 is bakelite, so as to avoid scratching the power module metal bottom plate 6 when limiting the power module metal bottom plate 6.
As an example, the dimensions of the recess 500 and the power module metal chassis 6 are matched, i.e. after the power module metal chassis 6 is placed in the recess 500, the center of the power module metal chassis 6 corresponds to the center of the recess 500.
As an example, the number of the first positioning holes 501 is plural, the number of the second positioning holes 502 is plural, a part of the first positioning holes 501 and a part of the second positioning holes 502 are separately disposed at two sides of the probe through holes 503 in a first direction and used for measuring the radian of the power module metal base plate 6 in the first direction, and a part of the first positioning holes 501 and a part of the second positioning holes 502 are separately disposed at two sides of the probe through holes 503 in a second direction and used for measuring the radian of the power module metal base plate 6 in the second direction, wherein the first direction and the second direction are perpendicular. Specifically, in this embodiment, the first direction is the X direction, and the second direction is the Y direction.
As an example, the size of the first positioning hole 501 is slightly larger than the size of the first positioning post 300 to ensure that the first positioning post 300 can pass through the first positioning hole 501 with a small gap therebetween, and in this embodiment, the first positioning hole 501 is a circular hole, the body of the first positioning post 300 is in a shape of a circular truncated cone, and the diameter of the first positioning hole 501 is 0.5mm larger than the maximum diameter of the first positioning post 300.
Likewise, the size of the second positioning hole 502 is slightly larger than that of the second positioning post 400 to ensure that the second positioning post 400 can pass through the second positioning hole 502 with a smaller gap therebetween, specifically, in this embodiment, the second positioning hole 502 is a circular hole, the body of the second positioning post 400 is in a shape of a circular truncated cone, and the diameter of the second positioning hole 502 is 0.5mm larger than the maximum diameter of the second positioning post 400.
For example, referring to fig. 6 and 7, in the present embodiment, the radian of one position is measured in the X direction, the span is L, the radian value is h, and the radian of three positions is measured in the Y direction, the spans are W1, W2, and W3, respectively. Correspondingly, referring to fig. 4, in the limiting frame 5, a set of first positioning holes 501 and second positioning holes 502 are disposed in the X direction, the distance between the first positioning holes 501 and the second positioning holes 502 in the X direction is L, three sets of first positioning holes 501 and second positioning holes 502 are disposed in the Y direction, and the distances between the three sets of first positioning holes 501 and the second positioning holes 502 in the Y direction are W1, W2, and W3, respectively, where the first positioning holes 501 and the second positioning holes 502 are located at the ends of the corresponding spans in the corresponding test positions.
As an example, the radian measuring tool for measuring the radian of the metal bottom plate of the power module comprises the following steps:
s1, fixing the first sliding block 3 and the second sliding block 4 to preset positions of the guide rail 100;
S2, calibrating the first positioning column 300, the second positioning column 400 and the shrinkage probe 201 on a calibration platform, wherein the bottom end of the first positioning column 300, the bottom end of the second positioning column 400 and the bottom end of the shrinkage probe 201 are positioned on the same plane after calibration;
S3, placing the power module metal bottom plate 6 to be measured in the groove 500 of the limit frame 5, aligning the first positioning column 300 with the first positioning hole 501 at a preset position, and aligning the second positioning column 400 with the second positioning hole 502 at a preset position, wherein the shrinkage probe 201 and the probe perforation 503 are aligned;
And S4, moving the framework 1 along the direction towards the power module metal bottom plate 6 to enable the first positioning column 300, the second positioning column 400 and the power module metal bottom plate 6 to be in contact, wherein in the process of moving the framework 1, the shrinkage probe 201 and the power module metal bottom plate are in contact with 6, the shrinkage probe 201 is compressed, and the number of the digital display dial indicator is recorded.
As an example, in step S1, for example, when measuring an arc with a span L (L is 110 mm) in the X direction, the first slider 3 is moved, the first slider 3 is fixed when the first positioning column 300 corresponds to a scale of 5.5cm, the second slider 4 is moved, and the position of the second slider 4 is fixed when the second positioning column 400 corresponds to a scale of 5.5 cm.
As an example, in step S2, the flatness of the calibration platform is-0.002mm to 0.002mm, so as to ensure that the bottom end of the first positioning post 300, the bottom end of the second positioning post 400 and the bottom end of the shrinkage probe 201 are located on the same plane after calibration.
As an example, as shown in fig. 8, since the power module metal bottom plate 6 has an arc, during the moving process of the skeleton 1, the shrinkage probe 201 will first contact with the power module metal bottom plate 6, then, as shown in fig. 9, the skeleton 1 continues to be moved, the shrinkage probe 201 is compressed, and when the first positioning column 300 and the second positioning column 400 contact with the power module metal bottom plate 6, the shrinkage probe 201 will stop being compressed, and the compression amount of the shrinkage probe 201 is the arc value h of the span L in the X direction.
Similarly, when the radian in the Y direction is measured, for example, the measuring distance is the radian of W1, the first slider 3 is moved to make the first positioning column 300 correspond to the scale of W1/2, the second slider 4 is moved to make the second positioning column 400 correspond to the scale of W1/2, then the calibration is performed on the calibration platform, the first positioning column 300 is aligned with the first positioning hole 501 in the corresponding position, the second positioning column 400 is aligned with the second positioning hole 502 in the corresponding position, and finally the skeleton 1 is moved to drive the first positioning column 300, the second positioning column 400 and the shrinkage probe 201 to move for measurement.
As an example, fig. 7 only shows that the arc measurement of the span L is performed in the X direction, in another example, in order to prevent the power module metal chassis 6 from being punched into an "M" shape, as shown in fig. 10, another arc measurement of the span L1 may be performed in the X direction, where L1 is smaller than L, and correspondingly, as shown in fig. 11, the probe through holes 503 are divided into a plurality of areas, and the first positioning holes 501 and the second positioning holes 502 are provided at bridging portions of adjacent areas to perform the arc value h1 measurement of the span L1.
As an example, for the power module metal base plate 6 of different specifications, radian measurement of different spans can be performed according to requirements, without being limited by this embodiment, where in the limiting frame 5, positions of the first positioning hole 501 and the second positioning hole 502 are set according to end positions of the spans.
As an example, the radian measuring tool for the metal bottom plate of the power module is low in cost, the cost is 1/150 or lower of that of a profiler or a 2.5-dimensional image measuring instrument, the equipment investment expenditure for measuring the radian of the metal bottom plate is greatly reduced, and the cost is reduced.
As an example, the radian measuring tool for the metal bottom plate of the power module of the embodiment is simple and convenient to operate, and can improve the radian measuring efficiency for the metal bottom plate.
As an example, for measuring the radian of the metal bottom plate or different positions of the power module with different sizes, only the structure of the limiting frame 5 is changed, and the structures of the framework 1, the digital display dial indicator 2, the first sliding block 3 and the second sliding block 4 are not required to be changed, so that the cost can be reduced as well.
In summary, in the radian measuring tool and the measuring method for the metal bottom plate of the power module, the radian measuring tool is low in cost, equipment investment and cost for measuring the radian of the metal bottom plate are greatly reduced, the cost is reduced, and the radian measuring tool is easy and convenient to operate, so that the radian measuring efficiency of the metal bottom plate can be improved. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (10)
1. A power module metal chassis radian measuring tool, comprising:
the framework is provided with a first surface and a second surface which are oppositely arranged, the second surface of the framework is provided with a guide rail, and a through hole penetrating through the framework is formed in the framework in the direction of pointing to the second surface along the first surface of the framework;
The digital display dial indicator is provided with a dial indicator body part and a shrinkage probe which are connected, the dial indicator body part is arranged on the first surface of the framework and extends into the through hole, and the shrinkage probe protrudes out of the second surface of the framework;
the first sliding block is arranged on the guide rail, can move along the guide rail and can be fixed on the guide rail, and a first positioning column is arranged on one side, away from the framework, of the first sliding block;
the second sliding block is arranged on the guide rail, can move along the guide rail and can be fixed on the guide rail, a second positioning column is arranged on one side, away from the framework, of the second sliding block, and the first sliding block and the second sliding block are arranged on two sides of the contraction probe in a separated mode;
the limiting frame is positioned below the framework, a groove is arranged in the limiting frame, the depth of the groove is larger than the thickness of the power module metal bottom plate to be measured, the size of the groove is matched with that of the power module metal bottom plate, the groove is used for limiting the power module metal bottom plate, and the convex surface of the power module metal bottom plate faces towards the framework;
The power module comprises a power module metal bottom plate, a limiting frame, a first positioning column, a second positioning column, a shrinkage probe and a shrinkage probe, wherein the preset position of the limiting frame is provided with a first positioning hole, a second positioning hole and a probe perforation which penetrate through the limiting frame, the first positioning column can penetrate through the first positioning hole and the convex surface of the power module metal bottom plate to be contacted, the second positioning column can penetrate through the second positioning hole and the convex surface of the power module metal bottom plate to be contacted, the shrinkage probe can penetrate through the probe perforation and the convex surface of the power module metal bottom plate to be contacted, and the shrinkage probe can be compressed.
2. The radian measuring tool of a metal bottom plate of a power module according to claim 1, wherein the number of the first positioning holes is multiple, the number of the second positioning holes is multiple, a part of the first positioning holes and a part of the second positioning holes are separated and arranged on two sides of the probe perforation in a first direction, a part of the first positioning holes and a part of the second positioning holes are separated and arranged on two sides of the probe perforation in a second direction, and the first direction and the second direction are perpendicular.
3. The radian measuring tool of a power module metal bottom plate according to claim 1, wherein the first surface of the framework is provided with a supporting table, and the supporting table is used for supporting and fixing the dial indicator body.
4. The radian measuring tool of a power module metal bottom plate according to claim 1, wherein scales are arranged on the side face of the framework and used for reading displacement positions of the first positioning column and the second positioning column.
5. The radian measuring tool of a power module metal bottom plate according to claim 1, wherein the end, away from the first sliding block, of the first positioning column and the end, away from the second sliding block, of the second positioning column are respectively provided with a spherical end.
6. The radian measuring tool of a power module metal base plate according to claim 5, wherein the diameter of the spherical end is 1 mm-4 mm.
7. The radian measuring tool of a power module metal bottom plate according to claim 1, wherein the end of the shrinkage probe, which is far away from the framework, is provided with a spherical needle.
8. The radian measuring tool of a power module metal base plate according to claim 7, wherein the diameter of the spherical needle ranges from 1mm to 4mm.
9. The radian measuring method of the power module metal bottom plate is characterized by comprising the following steps of:
Providing an radian measuring tool of the power module metal base plate according to any one of claims 1-8, and fixing the first sliding block and the second sliding block to preset positions of the guide rail;
calibrating a first positioning column, a second positioning column and a shrinkage probe on a calibration platform, wherein the bottom ends of the first positioning column, the second positioning column and the shrinkage probe are positioned on the same plane after calibration;
placing a metal bottom plate of the power module to be measured in a groove of a limiting frame, aligning the first positioning column with a first positioning hole at a preset position, aligning the second positioning column with a second positioning hole at the preset position, wherein the shrinkage probe and the probe perforation are aligned;
And the movable framework moves along the direction towards the power module metal bottom plate, so that the first positioning column, the second positioning column and the power module metal bottom plate are contacted, wherein the shrinkage probe is contacted with the power module metal bottom plate and is compressed in the process of moving the framework, and the display number of the digital display dial indicator is recorded.
10. The method for measuring radian of a power module metal bottom plate according to claim 9, wherein the flatness of the calibration platform is-0.002mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202510942569.8A CN120467151B (en) | 2025-07-09 | 2025-07-09 | A measuring tool and method for measuring the arc of a power module metal base plate |
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| CN202510942569.8A CN120467151B (en) | 2025-07-09 | 2025-07-09 | A measuring tool and method for measuring the arc of a power module metal base plate |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06185946A (en) * | 1992-09-14 | 1994-07-08 | Ricoh Co Ltd | Shape measuring device |
| JP2002206903A (en) * | 2001-01-09 | 2002-07-26 | Canon Inc | Method and apparatus for adjusting reference height of simple sphere meter |
| JP2006153555A (en) * | 2004-11-26 | 2006-06-15 | Sumitomo Rubber Ind Ltd | Tool for measuring tread radius |
| CN209197653U (en) * | 2019-01-23 | 2019-08-02 | 中检西部检测有限公司 | A high-precision curvature measuring instrument for flatness measurement of small planes |
| CN209541593U (en) * | 2019-03-27 | 2019-10-25 | 杭州骉昇科技有限公司 | A kind of amesdial |
| CN209840932U (en) * | 2019-05-15 | 2019-12-24 | 扬州四菱电子有限公司 | Rectifier module bottom plate bending tester |
| CN211651480U (en) * | 2020-05-13 | 2020-10-09 | 烟台台芯电子科技有限公司 | IGBT module copper substrate curvature measurement tool |
| CN220524861U (en) * | 2023-08-15 | 2024-02-23 | 浙江德加电子科技有限公司 | Measurement tool and detection equipment for radian of substrate |
-
2025
- 2025-07-09 CN CN202510942569.8A patent/CN120467151B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06185946A (en) * | 1992-09-14 | 1994-07-08 | Ricoh Co Ltd | Shape measuring device |
| JP2002206903A (en) * | 2001-01-09 | 2002-07-26 | Canon Inc | Method and apparatus for adjusting reference height of simple sphere meter |
| JP2006153555A (en) * | 2004-11-26 | 2006-06-15 | Sumitomo Rubber Ind Ltd | Tool for measuring tread radius |
| CN209197653U (en) * | 2019-01-23 | 2019-08-02 | 中检西部检测有限公司 | A high-precision curvature measuring instrument for flatness measurement of small planes |
| CN209541593U (en) * | 2019-03-27 | 2019-10-25 | 杭州骉昇科技有限公司 | A kind of amesdial |
| CN209840932U (en) * | 2019-05-15 | 2019-12-24 | 扬州四菱电子有限公司 | Rectifier module bottom plate bending tester |
| CN211651480U (en) * | 2020-05-13 | 2020-10-09 | 烟台台芯电子科技有限公司 | IGBT module copper substrate curvature measurement tool |
| CN220524861U (en) * | 2023-08-15 | 2024-02-23 | 浙江德加电子科技有限公司 | Measurement tool and detection equipment for radian of substrate |
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| CN120467151B (en) | 2025-10-10 |
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