CN110806495B - High-precision accelerometer pendulum assembly fixture - Google Patents
High-precision accelerometer pendulum assembly fixture Download PDFInfo
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- CN110806495B CN110806495B CN201910998708.3A CN201910998708A CN110806495B CN 110806495 B CN110806495 B CN 110806495B CN 201910998708 A CN201910998708 A CN 201910998708A CN 110806495 B CN110806495 B CN 110806495B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
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Abstract
The invention discloses a high-precision accelerometer pendulum assembly assembling clamp which comprises a coil part assembling clamp and a silicon pendulum piece part assembling clamp, wherein the coil part assembling clamp comprises a first base (1), a first coil sleeve (4), a first limiting piece (2) and a second limiting piece (3); the silicon swinging piece part assembling clamp comprises a second base (6), a second coil sleeve (7), a limiting block (8) and a central square column (9). The high-precision accelerometer pendulum assembly assembling clamp provided by the invention provides accurate limit for the size and matching requirements of each part of the pendulum assembly, the consistency of the assembled pendulum assembly is greatly increased, and the deformation is obviously reduced; and the fixture takes account of manufacturability and rapidity of assembly, influences of human factors are greatly reduced, and assembly time of the pendulum assemblies with the same number can be shortened by more than half.
Description
Technical Field
The invention belongs to the technical field of precision assembly of accelerometers, and particularly relates to a quick assembly clamp for a high-precision accelerometer pendulum assembly.
Background
With the continuous improvement of the precision requirement of an inertial navigation system on an accelerometer of a core element of the inertial navigation system, the assembly precision requirement on a pendulum component of a key component of the accelerometer becomes stricter, the unqualified pendulum component directly influences the survival rate of the accelerometer, and the requirement of the accelerometer is continuously increased, so that how to rapidly assemble the pendulum component with consistent state and small deformation becomes a difficult problem which must be overcome, and the assembly fixture of the old generation cannot meet the requirement.
The key components of the monocrystalline silicon flexible accelerometer comprise a torquer coil 13, a silicon pendulum plate 14, a counterweight 12 and two cushion blocks 10 and 11 (shown in figure 3), which are bonded into a whole through an adhesive, and the assembly precision of the pendulum component is very high because the accelerometer is a precision instrument. The assembly clamp of the old generation has poor limit on important parts during assembly; when the nut is adopted for screwing and limiting, additional stress is introduced to the pendulum assembly; the assembly technology of workers with too much dependence on skills makes human intervention factors difficult to avoid, and the consistency of pendulum assemblies assembled by different workers is poor; the heating operation cannot be performed due to the limitation of materials and dimensions; low assembly efficiency, long time consumption and the like. Therefore, with the continuous improvement of the precision of the accelerometer and the wide and large use of the accelerometer in a plurality of advanced weaponry, the pendulum component assembling clamp with high precision and high efficiency is designed, and is very important for improving the precision, consistency and productivity of the accelerometer.
Disclosure of Invention
In view of the above-mentioned situation of the prior art, the present invention aims to provide a fast assembling jig for a high-precision accelerometer pendulum assembly, so as to realize fast and precise assembling of an accelerometer.
The above object of the present invention is achieved by the following technical solutions:
a high-precision accelerometer pendulum assembly assembling clamp comprises a coil part assembling clamp and a silicon pendulum piece part assembling clamp. The coil part assembling clamp comprises a first base, a first coil sleeve, a first limiting piece and a second limiting piece; the silicon swinging piece part assembling clamp comprises a second base, a second coil sleeve, a limiting block and a center square column.
In the coil part assembling clamp, a circular groove is formed in the center of the first base, a first limiting sheet and a second limiting sheet are oppositely arranged on the end face of the first base and close to the edge of the circular groove, and clamping grooves are respectively formed in the first limiting sheet and the second limiting sheet towards the side of the circular groove and used for limiting cushion blocks of the pendulum assembly placed in the first limiting sheet and the second limiting sheet in the circumferential direction and the radial direction. The first wire ring sleeve is made of beryllium bronze, the upper end of the first wire ring sleeve is provided with a brim for supporting the coil, the center of the first wire ring sleeve is provided with a circular through hole, and one side of the circular through hole is provided with an opening which penetrates along the longitudinal direction of the first wire ring sleeve from the hole wall to the outer edge, so that the first wire ring sleeve can stretch to a certain degree under the stress condition, and the coil is convenient to limit. Meanwhile, in order to reduce the force required by the first snare to stretch, an opening penetrating along the longitudinal direction of the first snare can be formed on the other side of the circular through hole, and a connecting part with a certain length is arranged between the opening and the circular through hole. The end face of the circular groove of the first base is provided with two round holes for inserting the pin guide rail, and two through holes are formed in the corresponding positions of the first wire sleeve, so that the first wire sleeve can be inserted into the circular groove of the first base along the pin guide rail and is in sliding fit with the circular groove of the first base.
In the silicon pendulous reed part assembly fixture, a circular groove is arranged at the center of the second base, the second coil sleeve is of a cylindrical structure, a circular through hole is arranged at the center, and one side of the through hole is opened from the through hole to the periphery (namely, an opening which penetrates through the second coil sleeve longitudinally is formed from the hole wall to the outer edge on one side of the circular through hole). Meanwhile, the other side of the circular through hole is also provided with an opening which penetrates along the longitudinal direction of the second coil sleeve, a connecting part with a certain length is arranged between the opening and the circular through hole, so that the second coil sleeve has good elasticity and is convenient for limiting the coil, the second coil sleeve can be inserted into and fixed in the circular groove of the second base in a sliding fit manner, the end surface is higher than the end surface of the second base, a square groove is arranged from the groove wall of the circular groove of the second base to the outer edge of the second base in a penetrating manner, the limiting block is of an inverted convex structure, the lower half part can be inserted into the square groove of the second base in a sliding fit manner and fixed by a pin, a clamping groove is arranged at the position of the lower half part higher than the end surface of the second base (the clamping groove is formed by two bulges which protrude from the limiting block to the surface of the circular groove at a certain distance, and a cushion block of the pendulum assembly, be used for spacing the cushion of putting the subassembly, because the coil has bonded together with the cushion to can prevent that the coil from taking place the circumferential direction, the first half of stopper is equipped with the draw-in groove and is used for carrying out circumference and radial spacing to the counter weight of putting the subassembly (radial spacing utilizes the circular arc face of stopper first half and the laminating of counter weight external diameter to realize, and the protruding structure of circumference spacing utilization stopper first half circular arc face both sides realizes). A square through hole is formed in the center of the circular groove of the second base, the central square column can be inserted into the central square hole in a sliding fit mode, and the central square column is used for limiting the swinging piece.
The high-precision accelerometer pendulum assembly assembling clamp provided by the invention provides accurate limit for the size and the matching requirement of each part of the pendulum assembly, can greatly improve the consistency of the assembled pendulum assembly, and obviously reduces the deformation.
Drawings
Fig. 1 is a schematic perspective view of a coil part assembling jig in an embodiment of the invention;
FIG. 2 is a perspective view of a silicon wobble plate portion assembly fixture in an embodiment of the invention;
fig. 3 is a schematic perspective view of an accelerometer core assembly pendulum assembly to which the high-precision accelerometer pendulum assembly assembling jig of the invention is applied.
The device comprises a base, a first base, a second base, a first limiting piece, a second limiting piece, a first coil sleeve, a pin guide rail, a second base, a second coil sleeve, a limiting piece, a central square column, a first cushion block, a second cushion block, a counterweight, a coil and a silicon swinging piece, wherein the base comprises 1-the first base, 2-the first limiting piece, 3-the second limiting piece, 4-the first coil sleeve, 5-the pin guide rail, 6-the second base, 7-the second coil sleeve.
Detailed Description
For a clearer understanding of the objects, technical solutions and advantages of the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. In the following description, for purposes of explanation and not limitation, specific details are set forth in order to provide a thorough understanding of the present invention. It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures closely related to the solution according to the present invention are shown in the drawings, and other details not closely related to the present invention are omitted.
The invention provides a high-precision accelerometer pendulum assembly assembling clamp which comprises a coil part assembling clamp and a silicon pendulum piece part assembling clamp, and realizes the precise and rapid assembly of a pendulum assembly (comprising a first cushion block 10, a second cushion block 11, a counterweight 12, a coil 13 and a silicon pendulum piece 14) shown in figure 3. Fig. 1 and 2 are perspective views of the coil part assembling jig and the silicon flap part assembling jig, respectively.
As shown in the figure, the coil part assembling clamp comprises a first base 1, a first coil sleeve 4, a first limiting sheet 2 and a second limiting sheet 3; the silicon swinging piece part assembling clamp comprises a second base 6, a second coil sleeve 7, a limiting block 8 and a center square column 9.
In the coil part assembling clamp, a circular groove is arranged in the center of a first base 1, a first limiting piece 2 and a second limiting piece 3 are oppositely arranged on the end face of the first base 1 and close to the edge of the circular groove, and the first limiting piece 2 and the second limiting piece 3 are fixed on the first base 1 through pins. The first limiting sheet 2 and the second limiting sheet 3 are respectively provided with a clamping groove facing the circular groove side and used for limiting the cushion block of the pendulum assembly placed in the first limiting sheet in the circumferential direction and the radial direction. The first wire loop sleeve 4 is made of beryllium bronze and has good elasticity, the upper end of the first wire loop sleeve is provided with a brim for supporting the coil 13, the center of the first wire loop sleeve is provided with a circular through hole, and an opening which penetrates along the longitudinal direction of the first wire loop sleeve 4 is formed from the hole wall to the outer edge of one side of the circular through hole, so that the first wire loop sleeve can stretch to a certain degree under the stress condition, and the coil 13 is convenient to limit. Meanwhile, in order to reduce the force required for extending and retracting the first snare 4, an opening penetrating in the longitudinal direction of the first snare 4 may be further formed on the other side of the circular through hole, and a connection portion having a certain length, which is generally 1mm, exists between the opening and the circular through hole. The end face of the circular groove of the first base 1 is provided with two round holes for inserting the pin guide rail 5, and two through holes are arranged at corresponding positions of the first wire sleeve 4, so that the first wire sleeve 4 can be inserted into the circular groove of the first base 1 along the pin guide rail 5 and is in sliding fit with the circular groove of the first base 1.
In the silicon pendulous reed part assembly fixture, a circular groove is formed in the center of the second base 6, the second coil sleeve 7 is of a cylindrical structure, a circular through hole is formed in the center, one side of the through hole is communicated from the through hole to the periphery, and the second coil sleeve 7 is made of beryllium bronze and has good elasticity. Meanwhile, the other side of the circular through hole is also provided with an opening which is longitudinally penetrated through the second coil sleeve along the line, and a connecting part with a certain length is arranged between the opening and the circular through hole, so that the second coil sleeve 7 has good elasticity and is convenient for limiting the coil 13, and the certain length is usually 1 mm. The second coil sleeve 7 can be inserted and fixed in the circular groove of the second base 6 in a sliding fit manner, the end face is higher than the end face of the second base 6, a square groove is arranged from the circular groove wall of the second base 6 to the outer edge of the second base 6 in a penetrating manner, the limiting block 8 is of an inverted convex structure, the lower half portion can be inserted in the square groove of the second base 6 in a sliding fit manner and fixed on the second base 6 by using a pin, a clamping groove is arranged at a position, higher than the end face of the second base 6, of the lower half portion (the clamping groove is formed by two protrusions which are arranged at a certain distance from the limiting block 8 to the surface of the circular groove, a cushion block of the pendulum assembly is arranged between the two protrusions) for limiting the cushion block of the pendulum assembly, the coil 13 is bonded with the cushion block, so that circumferential rotation of the coil 13 can be prevented, and the upper half portion of the limiting block 8 is provided with a clamping groove for circumferentially and radially limiting the The position is realized by an arc surface attached to the outer diameter of the balance weight 12 at the upper half part of the limiting block 8, and the circumferential limiting is realized by protruding structures at two sides of the arc surface at the upper half part of the limiting block 8). A square through hole is formed in the center of the circular groove of the second base 6, the central square column 9 can be inserted into the central square hole in a sliding fit mode, and the central square column 9 is used for well limiting the silicon pendulous reed 14 through the central square hole of the silicon pendulous reed 14.
When the coil part is assembled, the first limiting piece 2 and the second limiting piece 3 are fixed on the first base 1 through pins (repeated disassembly is not needed after primary fixing), the first cushion block 10 and the second cushion block 11 are respectively placed into the limiting grooves of the first limiting piece 2 and the second limiting piece 3, the positions of the first limiting piece 2 and the second limiting piece 3 are uniquely fixed, then glue is coated on the corresponding position of the coil 13, the first coil sleeve 4 is slightly pinched to sleeve the coil 13, the first coil sleeve 4 is loosened to fix the coil 13, and then the first coil sleeve 4 slides into the groove of the first base 1 along the pin guide rail 5, so that the assembly of the coil part is completed.
Next, firstly, fixing a second coil sleeve 7 on a second base 6 through a pin, inserting a central square column 9 into a square groove of the second base 6, then sleeving a coil 13 adhered with a first cushion block 10 and a second cushion block 11 into the second coil sleeve 7, limiting the first cushion block 10 by using a lower clamping groove of a limiting block 8, so that the coil 13 is fixed at a unique position, coating glue on the first cushion block 10 and the second cushion block 11, sliding a silicon pendulum piece 14 into the silicon pendulum piece 14 along the central square column 9 by using a central square hole of the silicon pendulum piece to complete adhesion with the first cushion block 10 and the second cushion block 11, finally, coating glue on a balance weight 12, placing and adhering the silicon pendulum piece 14 by using the limiting block 8, placing the whole fixture into an oven for drying glue, and then completing assembly of the accelerometer core component pendulum component.
The high-precision accelerometer pendulum assembly assembling clamp provided by the invention provides accurate limit for the size and matching requirements of each part of the pendulum assembly, the consistency of the assembled pendulum assembly is greatly increased, and the deformation is obviously reduced; the fixture has the advantages that manufacturability and rapidness of assembly are considered, influence of human factors is greatly reduced, and assembly time of the pendulum assemblies with the same number can be shortened by more than half; in addition, the manufacturing and maintenance costs of the clamp are greatly reduced. After the clamp is put into use, the assembly survival rate of the pendulum component of the accelerometer is improved to be close to 100%, the production survival rate of the accelerometer is improved to 71% from 55% in the last year, and the effect is remarkable.
Claims (8)
1. A high-precision accelerometer pendulum assembly assembling clamp comprises a coil part assembling clamp and a silicon pendulum piece part assembling clamp, wherein the coil part assembling clamp comprises a first base (1), a first coil sleeve (4), a first limiting piece (2) and a second limiting piece (3); the silicon swinging piece part assembling clamp comprises a second base (6), a second coil sleeve (7), a limiting block (8) and a central square column (9),
in the coil part assembling clamp, a circular groove is arranged at the center of a first base (1), a first limiting sheet (2) and a second limiting sheet (3) are oppositely arranged on the end surface of the first base (1) and are close to the edge of the circular groove, clamping grooves are respectively arranged on the first limiting sheet (2) and the second limiting sheet (3) facing the circular groove, used for limiting the cushion blocks of the pendulum assembly placed in the first wire ring sleeve in the circumferential direction and the radial direction, the upper end of the first wire ring sleeve (4) is provided with a brim used for propping against the coil, the center is provided with a circular through hole, an opening which penetrates along the longitudinal direction of the first wire ring sleeve (4) is formed in one side of the circular through hole from the hole wall to the outer edge, a circular hole for inserting the pin guide rail (5) is formed in the end face of the circular groove of the first base (1), and the first wire ring sleeve (4) can be inserted into the circular groove of the first base (1) along the pin guide rail (5) and is in sliding fit with the circular groove of the first base (1);
in the silicon pendulous reed part assembly fixture, a circular groove is arranged at the center of a second base (6), a second coil sleeve (7) is of a cylindrical structure, a circular through hole is arranged at the center, an opening which penetrates along the longitudinal direction of the second coil sleeve (7) is arranged from the hole wall to the outer edge at one side of the circular through hole, the second coil sleeve (7) is inserted and fixed in the circular groove of the second base (6) in a sliding fit manner, the end surface is higher than the end surface of the second base (6), a square groove is arranged from the groove wall of the circular groove of the second base (6) to the outer edge of the second base (6) in a penetrating manner, a limiting block (8) is of an inverted convex structure, the lower half part is inserted in the square groove of the second base (6) in a sliding fit manner and fixed by a pin, a clamping groove which limits a cushion block of the pendulous reed assembly is arranged at the position of the lower half part higher than the end surface of the second base (6), a clamping groove which limits the cushion block of the pendulous assembly in the, a square hole is formed in the center of the circular groove of the second base (6), a central square column (9) can be inserted into the square hole in a sliding fit mode, and the central square column is used for limiting the swinging piece.
2. A high accuracy accelerometer pendulum assembly clamp as claimed in claim 1 wherein the first wire loop (4) is made of beryllium bronze.
3. A high accuracy accelerometer pendulum assembly jig according to claim 1, wherein on the other side of the central circular through hole of the first wire loop (4) there is also an opening running through in the longitudinal direction of the first wire loop (4), between which opening and said circular through hole there is a length of connection.
4. A high accuracy accelerometer pendulum assembly jig according to claim 3, wherein the certain length is 1 mm.
5. A high accuracy accelerometer pendulum assembly jig according to claim 1 wherein the second coil housing (7) is made of beryllium copper.
6. A high accuracy accelerometer pendulum assembly jig according to claim 1, wherein on the other side of the central circular through hole of the second coil housing (7), there is further opened an opening running through in the longitudinal direction of the second coil housing (7), between which opening and said circular through hole there is a connection part of a certain length.
7. A high accuracy accelerometer pendulum assembly fixture as claimed in claim 6 wherein said certain length is 1 mm.
8. A high accuracy accelerometer pendulum assembly jig according to claim 1, wherein the catch in the lower half of the stop block (8) is formed by two protrusions protruding at a distance from the surface of the stop block (8) facing the circular recess in said lower half, the spacer of the pendulum assembly being placed between said two protrusions.
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| CN201910998708.3A CN110806495B (en) | 2019-10-18 | 2019-10-18 | High-precision accelerometer pendulum assembly fixture |
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| CN201910998708.3A CN110806495B (en) | 2019-10-18 | 2019-10-18 | High-precision accelerometer pendulum assembly fixture |
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| CN110806495A CN110806495A (en) | 2020-02-18 |
| CN110806495B true CN110806495B (en) | 2021-06-01 |
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