CN117650093B - Positioning assembly for assembling power device and positioning assembly method for power device - Google Patents
Positioning assembly for assembling power device and positioning assembly method for power device Download PDFInfo
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- CN117650093B CN117650093B CN202410123708.XA CN202410123708A CN117650093B CN 117650093 B CN117650093 B CN 117650093B CN 202410123708 A CN202410123708 A CN 202410123708A CN 117650093 B CN117650093 B CN 117650093B
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Abstract
The invention discloses a positioning assembly for assembling a power device and a positioning assembly method for the power device, comprising a main positioning jig and an auxiliary positioning jig which are matched with each other; a plurality of positioning arms which are mutually spaced and parallel are convexly arranged on the third side of the main positioning section of the main positioning jig; a groove with a lateral opening is formed in the fourth side of the positioning arm; the grooves of the two adjacent positioning arms are opposite to each other and form a containing position for containing the power device between the grooves; the auxiliary positioning section of the auxiliary positioning jig is provided with a plurality of positioning parts extending outwards at intervals, and each positioning part comprises a first blocking wall and a second blocking wall and forms a positioning groove with an opening facing to the second side; the power device body is arranged in the accommodating position, the positioning part is correspondingly inserted between the two adjacent positioning arms, and the auxiliary positioning jig and the main positioning jig form an assembly; pins of the power device are positioned in the positioning grooves; six degrees of freedom of the power device are limited, and the possibility that the power device slides off the tool can be avoided no matter what angle change the assembly makes.
Description
Technical Field
The invention relates to the technical field of electronic device assembly, in particular to a positioning and assembling method of a power device and a positioning assembly for assembling the power device.
Background
The power device is fixed on the heat dissipation base, one surface of the packaging part is clung to the heat dissipation surface of the heat dissipation base, and the pins extend upwards to be connected with the PCBA circuit board. And the power device needs to be suspended in the air and spaced from the heat dissipation base.
The invention patent application with the application publication number of CN116525564A and named as an assembly method of a power device and a positioning tool provides a positioning tool which is used for loading the power device, limiting the relative position of the power device and a heat dissipation base, and taking out the tool after the clamping of the power device is completed, so that the positioning problem of the power device on the heat dissipation base is solved.
In the scheme of the application, the power device limits three degrees of freedom of the power device through the positioning tool, and does not limit all degrees of freedom, for example, the tool has a certain inclination in the installation process, so that the tool in the power device can slide down.
Disclosure of Invention
Aiming at the problems existing in the prior art of the installation of the original power device, the invention provides the positioning assembly for assembling the power device with higher stability, and further provides a positioning method and an assembling method for the power device by using the positioning assembly.
The technical scheme for solving the technical problems is as follows: the three-dimensional space includes a first side, a second side opposite the first side, a third side, a fourth side opposite the third side, a fifth side, and a sixth side opposite the fifth side. The positioning assembly for assembling the power device comprises a main positioning jig and an auxiliary positioning jig which are matched with each other;
the main positioning jig comprises a first substrate with the length extending from a fifth side to a sixth side, wherein the first substrate comprises a matching section positioned at the first side and a main positioning section positioned at the second side;
a plurality of positioning arms which are parallel to each other are convexly arranged on the third side of the main positioning section; the positioning arm extends outwards beyond the second side of the first substrate; a separation space is arranged between two adjacent positioning arms;
a groove is formed in the fourth side of the positioning arm; the groove faces the spaced-apart opening and comprises a supporting bottom wall, a lower retaining wall, an upper retaining wall and a side retaining wall; the grooves of two adjacent positioning arms are opposite to each other to form a containing position for containing the power device between the two positioning arms;
the auxiliary positioning jig comprises a second substrate with the length extending from the fifth side to the sixth side; the second substrate of the auxiliary positioning jig comprises a clamping section at a first side and an auxiliary positioning section at a second side;
the auxiliary positioning sections are provided with a plurality of positioning parts extending outwards at intervals; the positioning part comprises a first blocking wall positioned on a third side and a second blocking wall positioned on a fourth side, and the first blocking wall and the second blocking wall are provided with gaps to form a positioning groove with an opening facing the second side;
a clamping wall is arranged on the fourth side of the clamping section, and a clamping groove with an opening facing the second side is formed between the clamping wall and the second substrate;
the body of the power device is arranged in the accommodating position, and the pins of the power device are positioned between the two positioning arms and face to the first side;
the matching section is clamped into the clamping groove of the clamping section, the positioning part is correspondingly inserted between two adjacent positioning arms, and the auxiliary positioning jig and the main positioning jig form an assembly;
pins of the power device are positioned in the positioning grooves; the positioning arm and the positioning portion limit six degrees of freedom of the power device.
The preferred technical scheme for solving the technical problems is as follows: the main positioning jig and the auxiliary positioning jig are formed by additive manufacturing and printing.
The preferred technical scheme for solving the technical problems is as follows: the main positioning section protrudes from the matching section so that the surface of the third side of the first substrate is in a step shape.
The preferred technical scheme for solving the technical problems is as follows: the device also comprises two positioning pins; the fifth side and the sixth side of the first substrate are respectively provided with a pin hole penetrating from the first side to the second side.
The preferred technical scheme for solving the technical problems is as follows: the clamping section is provided with a plurality of clamping walls which are distributed at intervals, and the first side of the clamping section is provided with a clamping handle part which extends outwards in the width direction.
The preferred technical scheme for solving the technical problems is as follows: the opposite inner surfaces of the free ends of the first blocking wall and the second blocking wall are respectively provided with a guide inclined surface so that guide flaring is formed on the opposite sides of the first blocking wall and the second blocking wall to facilitate pin insertion of the power device.
The preferred technical scheme for solving the technical problems is as follows: when the pins of the power device are positioned in the positioning grooves, anti-collision gaps are formed between the pins and the first blocking wall and between the pins and the second blocking wall.
The technical scheme for solving the technical problems is as follows: the positioning and assembling method for the power device is characterized in that the power device is positioned through the positioning assembly for assembling the power device, and the method at least comprises the following steps:
s1, horizontally placing the main positioning jig on a mounting table surface in a direction that a groove faces upwards;
s2, mounting a power device on the main positioning jig in a way that a heat dissipation surface is upwards, wherein a body of the power device is positioned in a containing position between positioning arms, pins of the power device face the first substrate, and the positioning arms limit four degrees of freedom of the power device;
step S3, on the installation table top, the auxiliary positioning jig is horizontally pushed to the main positioning jig, the matching section of the main positioning jig is inserted into the clamping groove of the clamping section of the auxiliary positioning jig, the positioning part of the auxiliary positioning jig is correspondingly inserted between two adjacent positioning arms, the pins of the power device enter the positioning groove of the positioning part, the first blocking wall and the second blocking wall further limit the upper degree of freedom and the lower degree of freedom of the power device, and then the assembly formed by the main positioning jig and the auxiliary positioning jig limits the six degrees of freedom of the power device.
The preferred technical scheme for solving the technical problems is as follows: positioning the power device on a heat dissipation base through the positioning assembly for assembling the power device, and fixing the power device in a mounting groove of the heat dissipation base through an elastic sheet; the mounting groove comprises opposite heat dissipation walls and supporting walls;
it at least comprises the following steps:
s4, inserting the assembly downwards towards the mounting groove in the direction that the radiating surface of the power device faces the radiating wall of the mounting groove;
s5, enabling the positioning arms of the main positioning jig to enter the mounting groove, and enabling the power devices between the positioning arms to be abutted against the heat dissipation wall of the mounting groove; a clamping gap for feeding the bullet sheet is formed between the power device and the supporting wall;
s6, assembling the elastic sheet into the clamping gap, wherein the elastic force of the elastic sheet tightens the power device;
s7, removing the auxiliary positioning jig upwards;
and S8, moving the main positioning jig towards the direction of the elastic sheet to release the main positioning jig from the power device, and then taking out the main positioning jig upwards.
The preferred technical scheme for solving the technical problems is as follows: the two ends of the first substrate in the length direction are provided with pin holes penetrating from the first side to the second side; the heat dissipation wall is provided with a positioning hole which is matched with the pin hole and penetrates through the pin hole from top to bottom;
step S5 also comprises the step of aligning the pin hole with the positioning hole, and enabling the positioning pin to pass through the pin hole and the positioning hole; step S8 includes the process of removing the positioning pins upwards and then moving the main positioning jig.
Compared with the prior art, the invention adopts the technical proposal as follows: the assembly formed by the main positioning jig and the auxiliary positioning jig limits six degrees of freedom of the power device, the requirement on the perpendicularity of the tool in the process is eliminated, and the possibility that the power device slides off the tool can be eliminated no matter what angle change the assembly makes. In addition, the heat dissipation base can also be suitable for heat dissipation bases with more structures, and the setting angle of the mounting groove can also be wider.
Drawings
The invention will be described in further detail below in connection with the drawings and the preferred embodiments, but it will be appreciated by those skilled in the art that these drawings are drawn for the purpose of illustrating the preferred embodiments only and thus should not be taken as limiting the scope of the invention. Moreover, unless specifically indicated otherwise, the drawings are merely intended to conceptually illustrate the compositions or constructions of the described objects and may contain exaggerated representations, and the drawings are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of a main positioning fixture according to a preferred embodiment of the present invention;
FIG. 2 is a second schematic diagram of a main positioning fixture according to a preferred embodiment of the present invention;
FIG. 3 is a third schematic view of a main positioning fixture according to a preferred embodiment of the present invention;
FIG. 4 is a schematic diagram of a main positioning fixture according to a preferred embodiment of the present invention;
FIG. 5 is a schematic diagram of an auxiliary positioning fixture according to a preferred embodiment of the present invention;
FIG. 6 is a second schematic diagram of the auxiliary positioning fixture according to a preferred embodiment of the present invention;
FIG. 7 is a third schematic view of an auxiliary positioning fixture according to a preferred embodiment of the present invention;
FIG. 8 is a diagram of an auxiliary positioning fixture according to a preferred embodiment of the present invention;
FIG. 9 is a schematic diagram of a step of use of a positioning assembly for assembling a power device;
FIG. 10 is a schematic diagram of a combination step of assembling a positioning assembly of a power device;
FIG. 11 is a schematic diagram I of a power device mounted to a heat sink base using a positioning assembly for mounting the power device;
FIG. 12 is a schematic diagram II of a power device mounted to a heat dissipation base using a positioning assembly for mounting the power device;
fig. 13 is a schematic diagram III of a power device mounted to a heat sink base using a positioning assembly for mounting the power device.
Reference numerals:
first side X-, second side X+, third side Z+, fourth side Z-, fifth side Y-, sixth side Y+;
a power device 100; a body 101; a heat radiation surface 101a; a pin 102;
a positioning assembly 200 for assembling the power device; a heat dissipation base 300; a spring 400;
a main positioning jig 201; an auxiliary positioning jig 202;
a first substrate 1; a mating section 11; a main positioning section 12; a positioning arm 2;
grooves s; a support bottom wall s1; a lower baffle wall s2; an upper baffle wall s3; side barrier walls s4;
a second substrate 3; a clamping section 31; an auxiliary positioning section 32;
a chuck wall 4; a clamping groove y; a positioning part 5;
a first blocking wall 51; a second blocking wall 52; a positioning groove g;
a guide slope p; guiding flaring h;
a heat radiation wall 301; an abutment wall 302; a mounting groove k;
a positioning pin 203; pin holes 6;
a hollow L; a first body wall 121; a second body wall 122; a reinforcing rib 70;
an inclined portion 8; a connection rib U; gripping the handle 9.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative, exemplary, and should not be construed as limiting the scope of the invention.
It should be noted that: like reference numerals denote like items in the following figures, and thus once an item is defined in one figure, it may not be further defined and explained in the following figures.
It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number. While the terms "first" and "second" are used for descriptive purposes only and not for purposes of limitation, there is no other directional meaning.
In the description of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "connected," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 11-13, the present embodiment provides a positioning assembly 200 for assembling a power device for positioning the power device 100 on a heat dissipation base 300. The assembly object when assembling the power device 100 includes, in addition to the power device 100 and the heat dissipation base 300, a spring piece 400 that fixes the power device 100 to the heat dissipation base 300. During the assembly process, the positioning assembly 200 for assembling the power device positions the power device 100 such that the power device 100 is disposed at a certain position of the heat dissipation base 300.
As shown in fig. 1-10, the positioning assembly 200 for assembling the power device includes a main positioning jig 201 and an auxiliary positioning jig 202 that are matched with each other. To facilitate explanation of the azimuthal interrelation of the components of the primary positioning jig 201 and the secondary positioning jig 202, the three-dimensional space is expressed in terms of a coordinate system as a first side X-, a second side x+ opposite to the first side X-, a third side z+, a fourth side z+ opposite to the third side z+, a fifth side Y-, and a sixth side y+ opposite to the fifth side.
As shown in fig. 1-4, the main positioning fixture 201 includes a first substrate 1, wherein the width of the first substrate 1 extends from a first side x+ to a second side x+, the thickness extends from a third side z+ to a fourth side Z-, and the length extends from a fifth side to a sixth side y+.
The first substrate 1 comprises a mating section 11 at a first side X-and a main positioning section 12 at a second side x+. The surface of the third side z+ of the main positioning section 12 is convexly provided with a plurality of positioning arms 2 which are mutually spaced and parallel. A space is arranged between two adjacent positioning arms. The positioning arm 2 extends from the surface of the positioning section 12 towards the edge and continues to extend outwards beyond the edge of the first side X-of the first substrate 1. Between two adjacent positioning arms 2 is used for positioning a power device 100.
As shown in fig. 1-4, the surface of the fourth side Z-of the positioning arm 2 is concavely formed with a recess s, i.e. the recess s is located on the side facing away from the projection of the positioning arm 2 relative to the main positioning section 12. Each groove s includes a support bottom wall s1, a lower blocking wall s2, an upper blocking wall s3, and a side blocking wall s4. Each recess s is provided at the edge and opens laterally, i.e. the supporting bottom wall s1 extends to the side of the positioning arm 2 adjacent to the compartment, so as to form an opening towards the compartment. The centrally located positioning arm 2 generally comprises two recesses s, adjacent recesses s of adjacent two positioning arms 2 being opposed and forming a receiving location therebetween for receiving the power device 100.
When the power device 100 is set in the accommodation position, both side portions of the body 101 of the power device 100 are caught into the grooves s of the two positioning arms 2, while the middle portion is kept free. The pins 102 of the power device 100 are located between the two positioning arms 2 while avoiding the solid portion of the positioning arms 2, and extend towards the first substrate 1, and may extend into the side space of the third side z+ of the first substrate 1, or may not reach the side space of the third side z+ of the first substrate 1, but be located at the second side x+ of the first substrate 1.
The main positioning jig 201 is used for limiting five degrees of freedom of the power device 100, specifically, the supporting bottom wall s1, the lower blocking wall s2 and the upper blocking wall s3 of the two grooves s limit the degrees of freedom of the power device 100 in three directions, namely, a third side z+ "," second side x+ "," first side X- ", respectively, while the side blocking walls s4 of the two grooves s limit the degrees of freedom of the power device 100 in two directions, namely, a fifth side Y-", a sixth side y+ ", respectively. But the degree of freedom in the direction away from the support bottom wall s1, i.e., the direction of the "fourth side Z-" is not limited. The auxiliary positioning jig 202 is used to lock the last degree of freedom.
As shown in fig. 5-8, the auxiliary positioning fixture 202 includes a second substrate 3 extending in the same direction as the first substrate 1. The second base plate 3 comprises a clamping section 31 at the first side X-and an auxiliary positioning section 32 at the second side x+. The fourth side Z-of the clamping section 31 is provided with a clamping wall 4, the inner side of which clamping wall 4 forms a clamping groove y opening towards the second side x+. The clamping groove y is used for being inserted into the matching section 11 of the main positioning jig 201, so that the main positioning jig 201 and the auxiliary positioning jig 202 are combined into a whole. The clamping wall 4 has a certain clamping force on the main positioning jig 201, so that the main positioning jig 201 and the auxiliary positioning jig 202 can be prevented from being separated.
While the auxiliary positioning segments 32 are provided with a number of outwardly extending positioning portions 5 at intervals. The positioning portion 5 includes a first blocking wall 51 located at the third side z+ and a second blocking wall 52 located at the fourth side Z-, the first blocking wall 51 and the second blocking wall 52 having a gap to form a positioning groove g opening toward the second side x+. The positioning parts 5 are matched with the arrangement of the positioning arms 2 of the main positioning jig 201, that is, each positioning part 5 can be independently inserted into the space between two adjacent positioning arms 2.
When the body 101 of the power device 100 is placed in the accommodating position, the pins 102 of the power device 100 are located between the two positioning arms 2 and face the first side X-. The matching section 11 is clamped into the clamping groove y of the clamping section 31, the positioning part 5 is correspondingly inserted between the two adjacent positioning arms 2, and when the auxiliary positioning jig 202 and the main positioning jig 201 form an assembly, the pins 102 of the power device 100 are positioned in the positioning groove g. The first barrier wall 51 and the second barrier wall 52 further limit the degrees of freedom of the power device 100 "third side z+", "fourth side Z-". The positioning arm 2 and the positioning portion 5 thereby limit six degrees of freedom of the power device 100.
As shown in fig. 5 to 8, it is preferable that both inner surfaces of the free ends of the first and second barrier walls 51 and 52 are provided with guide slopes p so that opposite sides of the first and second barrier walls 51 and 52 form guide flares h to facilitate insertion of the pins 102 of the power device 100.
It should be appreciated that there may still be some assembly clearance between the power device 100 and the positioning assembly when the power device 100 is assembled into the positioning assembly. This assembly gap is mainly embodied in that when the pins 102 of the power device 100 are located in the positioning grooves g, there is an anti-collision gap between the pins 102 and the first and second blocking walls 51 and 52, so that the pins 102 can be prevented from being bumped when pushed in. Since the pins 102 are long, even if gaps are left, the limit thereof is not affected.
To further facilitate the assembly positioning of the power device 100, when the pins 102 hit the second blocking wall 52, the surface of the fourth side Z-of the body 101 of the power device 100 is either above the surface of the positioning arm 2 or flush with the surface of the positioning arm 2.
Based on the above structure, the power device 100 is positioned on the heat dissipation base 300 by the positioning assembly 200 for assembling the power device, and the power device 100 is fixed in the mounting groove k of the heat dissipation base 300 including the opposite heat dissipation wall 301 and the abutting wall 302 by the elastic sheet 400.
The assembly process comprises two stages: first, the combination of the power device 100 and the positioning assembly 200 that mounts the power device. Second, the power device 100 is assembled into the heat dissipation base 300 using the positioning assembly 200 for assembling the power device.
As shown in fig. 9, the first stage includes at least the following steps:
step S1, the main positioning jig 201 is horizontally placed on the installation table surface in the upward direction of the groove S.
In step S2, the power device 100 is mounted on the main positioning fixture 201 with the heat dissipation surface 101a facing upwards, the body 101 of the power device is located in the accommodation position between the positioning arms 2, the pins 102 of the power device 100 face the first substrate 1, and the positioning arms 2 limit four degrees of freedom of the power device 100.
Step S3, on the mounting table, the auxiliary positioning jig 202 is horizontally pushed to the main positioning jig 201, the mating section 11 of the main positioning jig 201 is inserted into the clamping groove y of the clamping section 31 of the auxiliary positioning jig 202, the positioning portion 5 of the auxiliary positioning jig 202 is correspondingly inserted between two adjacent positioning arms 2, the pins 102 of the power device 100 enter the positioning groove g of the positioning portion 5, the first blocking wall 51 and the second blocking wall 52 further limit the upper and lower two degrees of freedom of the power device 100, and then the assembly formed by the main positioning jig 201 and the auxiliary positioning jig 202 limits the six degrees of freedom of the power device 100.
After the first stage, the power device 100 is clamped by the positioning assembly 200 for assembling the power device, so that the power device 100 can be transferred to any position, and the positioning of the power device 100 is realized as long as the positioning of the positioning assembly 200 for assembling the power device is solved.
As shown in fig. 11-13, the second stage includes at least the following steps:
step S4, the assembly containing the power device 100 is adjusted to an angle corresponding to the mounting groove k of the heat dissipation base 300, and the assembly is inserted downward toward the mounting groove with the heat dissipation surface 101a of the power device 100 facing the heat dissipation wall 301 of the mounting groove k.
In step S5, the positioning arms 2 of the main positioning jig 201 enter the mounting groove k, the fourth side Z-of the power device 100 between the positioning arms 2 abuts against the heat dissipation wall 301 of the mounting groove k, the first substrate 1 and the second substrate 3 are located outside the mounting groove k, and a clamping gap for the elastic sheet 400 to enter is provided between the third side z+ of the power device 100 and the abutting wall 302.
Step S6, the elastic sheet 400 is assembled in the clamping gap, and the elastic force of the elastic sheet 400 tightens the power device 100.
Step S7, the auxiliary positioning jig 202 is removed upwards.
Step S8, the main positioning jig 201 is moved towards the direction of the spring plate 400 to trip the power device 100, and then the main positioning jig 201 is taken out upwards.
The positioning assembly 200 for assembling the power device provided by the embodiment assists in mounting the power device 100, eliminates the requirement on the perpendicularity of the tool in the process, and can prevent the possibility that the power device 100 slides off the tool no matter what angle change the assembly makes. In addition, the heat dissipation base 300 can be adapted to more structures, and the installation angle of the installation groove k can be wider.
As shown in fig. 3, 4, 12-13, the power device mounting assembly 200 preferably further includes two alignment pins 203. The first substrate 1 has pin holes 6 formed at both ends in the longitudinal direction thereof, the pin holes 6 being formed so as to pass through the first side x+ to the second side x+ and the positioning pins 203 being capable of passing through the pin holes 6. And the heat dissipation wall 301 is provided with positioning holes which are matched with the pin holes 6 and vertically penetrated. The positioning pins 203 are matched with the pin holes 6 and the positioning holes of the heat dissipation base 300 to realize positioning between the positioning assembly 200 for assembling the power device and the heat dissipation base 300.
In step S5, the pin holes 6 are aligned with the positioning holes, and the positioning pins 203 pass through the pin holes 6 and the positioning holes, so that the positioning assembly 200 for assembling the power devices is positioned on the heat dissipation base 300, so that each power device 100 and the heat dissipation base 300 have a certain position. In step S8, the positioning pins 203 are removed upward, and then the main positioning fixture 201 is moved.
As shown in fig. 1 to 4, the main positioning section 12 protrudes from the mating section 11, so that the surface of the third side z+ of the first substrate 1 is stepped. The step is more convenient for inserting the positioning part 5 of the auxiliary positioning jig 202.
The main positioning section 12 of the main positioning jig 201 is Z-convex on the fourth side, so that the main positioning section 12 is significantly larger in thickness than the mating section 11. This arrangement makes the center of gravity of the overall structure more reasonable, facilitating the positioning assembly to rest on the heat dissipating wall 301 of the heat dissipating base 300 in step S5.
In order to save costs and to make the jig lighter, as shown in fig. 1-4, the main positioning section 12 is provided with a hollow L, i.e. the main positioning section 12 is composed of a first solid wall 121 on the third side z+ and a second solid wall 122 on the fourth side Z-, the first solid wall 121 and the second solid wall 122 being spaced apart by a distance forming the hollow L opening towards the second side x+. The provision of the empty groove may also function as another member to avoid the upper surface of the heat radiation wall 301 of the heat radiation base 300.
As shown in fig. 3 to 4, a reinforcing rib 70 is provided between the first body wall 121 and the second body wall 122 at a position corresponding to the positioning arm 2, and the reinforcing rib 70 connects and extends the first body wall 121 and the second body wall 122 to the positioning arm 2. This is advantageous not only in reinforcing the strength of the first substrate 1 but also in reinforcing the strength of the positioning arm 2, enabling the deformation amount of the positioning arm 2 to be reduced.
As shown in fig. 5, the third side z+ of the clamping section 31 of the auxiliary positioning jig 202 is provided with an inclined portion 8 gradually inclined outwards from the first side X-to the second side x+, and the inclined portion 8 may be an inclined surface or an inclined surface of a plurality of connecting ribs U after the side portion is reduced. The arrangement of the inclined part 8 is convenient for the installation of the elastic sheet 400 and is also convenient for operators to observe operation engineering.
As shown in fig. 6, the clamping section 31 is preferably provided with a plurality of spaced apart clamping walls 4. The chuck wall 4 extends from the first side X-of the second substrate 3 to the second side x+ of the second substrate 3. The chuck wall 4 is spaced apart from the second substrate 3 by a distance to form a chuck groove y. In this embodiment, the two ends and the middle of the clamping section 31 are provided with three clamping walls 4 in total, so that the clamping of the main positioning fixture 201 can be more uniformly realized.
As shown in fig. 5-7, the first side X-of the clamping section 31 is provided with a clamping shank 9 extending outwardly in the width direction for the operator to grip the clamping shank 9 for the relevant operation, which of course also provides a mechanical clamping point for the automated operation. The clamping shank 9 is preferably arranged in an intermediate position of the second base plate 3.
In this embodiment, the two jigs of the positioning assembly 200 for assembling the power device are preferably printed by using an additive manufacturing process. At present, the mainstream tool is a CNC processing technology, CNC has higher requirements on workpiece clamping and positioning, and processing damage is easy to cause for very complex parts and local characteristics too small and too deep. The more complex the part, the longer the machining time and the higher the machining cost. The main positioning jig 201 and the auxiliary positioning jig 202 in the embodiment are optimized and adapted in design for the additive manufacturing process, and can cope with the development rhythm of faster and faster updating iteration, thereby being more beneficial to controlling the cost and the processing time.
The positioning assembly for assembling the power device and the positioning assembly method for assembling the power device provided by the invention are described in detail, and specific examples are applied to illustrate the principles and the implementation modes of the invention, and the description of the above examples is only used for helping to understand the invention and the core idea. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (10)
1. A positioning assembly for assembling the power device, which comprises a first side, a second side opposite to the first side, a third side, a fourth side opposite to the third side, a fifth side and a sixth side opposite to the fifth side in a three-dimensional space; the method is characterized in that: comprises a main positioning jig and an auxiliary positioning jig which are matched with each other;
the main positioning jig comprises a first substrate with the length extending from a fifth side to a sixth side, wherein the first substrate comprises a matching section positioned at the first side and a main positioning section positioned at the second side;
a plurality of positioning arms which are parallel to each other are convexly arranged on the third side of the main positioning section; the positioning arm extends outwards beyond the second side of the first substrate; a separation space is arranged between two adjacent positioning arms;
a groove is formed in the fourth side of the positioning arm; the groove faces the spaced interval opening and comprises a supporting bottom wall, a lower retaining wall, an upper retaining wall and side retaining walls; the grooves of two adjacent positioning arms are opposite to form a containing position for containing the power device between the two positioning arms;
the auxiliary positioning jig comprises a second substrate with the length extending from the fifth side to the sixth side; the second substrate comprises a clamping section at a first side and an auxiliary positioning section at a second side;
the auxiliary positioning sections are provided with a plurality of positioning parts extending outwards towards the second side at intervals; the positioning part comprises a first blocking wall positioned on a third side and a second blocking wall positioned on a fourth side, and the first blocking wall and the second blocking wall are provided with gaps to form a positioning groove with an opening facing the second side;
a clamping wall is arranged on the fourth side of the clamping section, and a clamping groove with an opening facing the second side is formed between the clamping wall and the second substrate;
the body of the power device is arranged in the accommodating position, and the pins of the power device are positioned between the two positioning arms and face to the first side;
the matching section is clamped into the clamping groove of the clamping section, the positioning part is correspondingly inserted between two adjacent positioning arms, and the auxiliary positioning jig and the main positioning jig form an assembly;
pins of the power device are positioned in the positioning grooves; the positioning arm and the positioning portion limit six degrees of freedom of the power device.
2. The power device-mounted positioning assembly of claim 1, wherein: the main positioning jig and the auxiliary positioning jig are formed by additive manufacturing and printing.
3. The power device-mounted positioning assembly of claim 1, wherein: the main positioning section protrudes from the matching section so that the surface of the third side of the first substrate is in a step shape.
4. The power device-mounted positioning assembly of claim 1, wherein: the device also comprises two positioning pins; the fifth side and the sixth side of the first substrate are respectively provided with a pin hole penetrating from the first side to the second side.
5. The power device-mounted positioning assembly of claim 1, wherein: the clamping section is provided with a plurality of clamping walls which are distributed at intervals, and the first side of the clamping section is provided with a clamping handle part which extends outwards from the second side to the first side.
6. The power device-mounted positioning assembly of claim 1, wherein: the opposite inner surfaces of the free ends of the first blocking wall and the second blocking wall are respectively provided with a guide inclined surface so that guide flaring is formed on the opposite sides of the first blocking wall and the second blocking wall to facilitate pin insertion of the power device.
7. The power device-mounted positioning assembly of claim 1, wherein: when the pins of the power device are positioned in the positioning grooves, anti-collision gaps are formed between the pins and the first blocking wall and between the pins and the second blocking wall.
8. The positioning and assembling method of the power device is characterized by comprising the following steps of: positioning a power device by the power device-mounted positioning assembly of claim 1, comprising at least the steps of:
s1, horizontally placing the main positioning jig on a mounting table surface in an upward direction of the groove;
s2, mounting a power device on the main positioning jig in a way that a heat dissipation surface is upwards, wherein a body of the power device is positioned in a containing position between positioning arms, pins of the power device face the first substrate, and the positioning arms limit four degrees of freedom of the power device;
step S3, on the installation table top, the auxiliary positioning jig is horizontally pushed to the main positioning jig, the matching section of the main positioning jig is inserted into the clamping groove of the clamping section of the auxiliary positioning jig, the positioning part of the auxiliary positioning jig is correspondingly inserted between two adjacent positioning arms, the pins of the power device enter the positioning groove of the positioning part, the first blocking wall and the second blocking wall further limit the upper degree of freedom and the lower degree of freedom of the power device, and then the assembly formed by the main positioning jig and the auxiliary positioning jig limits the six degrees of freedom of the power device.
9. The positioning and assembling method of a power device according to claim 8, wherein:
positioning the power device on a heat dissipation base through the positioning assembly for assembling the power device according to claim 1, wherein the power device is fixed in a mounting groove of the heat dissipation base through a spring plate; the mounting groove comprises opposite heat dissipation walls and supporting walls;
it at least comprises the following steps:
s4, inserting the assembly downwards towards the mounting groove in the direction that the radiating surface of the power device faces the radiating wall of the mounting groove;
s5, enabling the positioning arms of the main positioning jig to enter the mounting groove, and enabling the power devices between the positioning arms to be abutted against the heat dissipation wall of the mounting groove; a clamping gap for a bullet feeding sheet to enter is formed between the power device and the supporting wall;
s6, assembling the elastic sheet into the clamping gap, wherein the elastic force of the elastic sheet tightens the power device;
s7, removing the auxiliary positioning jig upwards;
and S8, moving the main positioning jig to the direction of the elastic sheet to release the main positioning jig from the power device, and then taking out the main positioning jig upwards.
10. The positioning and assembling method of a power device according to claim 9, wherein:
the two ends of the first substrate in the length direction are provided with pin holes penetrating from the first side to the second side; the heat dissipation wall is provided with a positioning hole which is matched with the pin hole and penetrates through the pin hole from top to bottom;
step S5 also comprises the step of aligning the pin hole with the positioning hole, and enabling the positioning pin to pass through the pin hole and the positioning hole;
step S8 includes the process of removing the positioning pins upwards and then moving the main positioning jig.
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| CN202410123708.XA CN117650093B (en) | 2024-01-30 | 2024-01-30 | Positioning assembly for assembling power device and positioning assembly method for power device |
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| CN202410123708.XA CN117650093B (en) | 2024-01-30 | 2024-01-30 | Positioning assembly for assembling power device and positioning assembly method for power device |
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| CN117650093A (en) | 2024-03-05 |
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