阅读说明：本技术 一种加速度计表芯对接结构及对接方法 (Accelerometer core butt joint structure and method ) 是由 张阳 于 2019-12-11 设计创作，主要内容包括：本发明属于加速度计安装结构及安装方法,为解决现有技术中对接表芯时,对接力无法量化,且容易出现对接力过大和施力不均匀,造成表芯受损或对接不准确的技术问题,提供一种加速度计表芯对接结构及对接方法,对接结构借助第一弹簧,使第一轴向顶杆和第二轴向顶杆之间实现柔性的轴向对接,第一径向调节杆和第二径向调节杆,分别与第一径向推板和第二径向推板相配合对表芯径向对接。对接方法是先通过第一径向调节杆和第二径向调节杆,使第一径向推板和第二径向推板相互靠近,将表芯放置于两个径向推板之间,再对表芯轴向进行定位,再次径向调节,使待安装表芯的质心、第一轴向顶杆和第二轴向顶杆位于同一直线,再灌胶封装完成对接。(The invention belongs to an accelerometer mounting structure and an accelerometer mounting method, and aims to solve the technical problems that in the prior art, when a meter core is butted, the butting force cannot be quantized, and the meter core is easily damaged or inaccurate in butting due to overlarge butting force and uneven force application. The butt joint method comprises the steps of enabling a first radial push plate and a second radial push plate to be close to each other through a first radial adjusting rod and a second radial adjusting rod, placing a watch core between the two radial push plates, positioning the watch core in the axial direction, performing radial adjustment again to enable the mass center of the watch core to be installed, a first axial ejector rod and a second axial ejector rod to be located on the same straight line, and filling glue for packaging to complete butt joint.)

1. An accelerometer table core butt-joint structural, its characterized in that: comprises a first axial ejector rod (7), a second axial ejector rod (8), a first radial push plate (3), a second radial push plate (4), a first radial adjusting rod (5) and a second radial adjusting rod (6);

the first axial ejector rod (7) penetrates through the side wall of the butt joint base (1) and is arranged along the axial direction of the watch core (12) to be installed, a first installation seat (9) is sleeved outside the first axial ejector rod (7), the first installation seat (9) is installed in the butt joint base (1), and the first installation seat (9) is in threaded fit with the first axial ejector rod (7);

the second axial ejector rod (8) and the first axial ejector rod (7) are coaxially arranged, and the second axial ejector rod (8) is installed in the butt joint base (1) through a second installation seat (10); the front part of the second mounting seat (10) is a hollow cavity with an opening at the front end, a first spring (2) is arranged in the hollow cavity, the rear end of a second axial ejector rod (8) is in contact with the first spring (2), the front end of the second axial ejector rod (8) penetrates through the opening at the front end of the second mounting seat (10) and then extends outwards, and the inner diameter of the opening at the front end of the second mounting seat (10) is smaller than the outer diameter of the rear end of the second axial ejector rod (8); the rear part of the second mounting seat (10) is mounted in the butt joint base (1);

the first radial adjusting rod (5) and the second radial adjusting rod (6) penetrate through the side wall of the butt joint base (1), the first radial adjusting rod (5) and the second radial adjusting rod (6) are arranged oppositely along the radial direction of a watch core (12) to be installed, and the first radial adjusting rod (5) and the second radial adjusting rod (6) are in threaded fit with the butt joint base (1);

the upper end of the first radial push plate (3) and the upper end of the second radial push plate (4) are hinged and installed in the butt joint base (1), the outer side of the first radial push plate (3) is opposite to the end of the first radial adjusting rod (5), and the outer side of the second radial push plate (4) is opposite to the end of the second radial adjusting rod (6).

2. The accelerometer core docking structure of claim 1, wherein: the device also comprises a first radial fine adjustment rod (17) and a second radial fine adjustment rod (18);

a first sliding cavity (13) and a second sliding cavity (14) are arranged in the butt joint base (1) along the vertical direction;

the first mounting seat (9) is mounted in the first sliding cavity (13), a second spring (15) is arranged between the first mounting seat (9) and the bottom surface of the first sliding cavity (13), one end of a first radial fine adjustment rod (17) penetrates into the butt joint base (1) to abut against the upper end of the first mounting seat (9), and the first radial fine adjustment rod (17) is in threaded fit with the butt joint base (1);

the second mounting seat (10) is mounted in the second sliding cavity (14), a third spring (16) is arranged between the second mounting seat (10) and the bottom surface of the second sliding cavity (14), one end of a second radial fine adjustment rod (18) penetrates into the butt joint base (1) to abut against the upper end of the rear portion of the second mounting seat (10), and the second radial fine adjustment rod (18) is in threaded fit with the butt joint base (1).

3. An accelerometer movement docking structure as claimed in claim 1 or 2 wherein: the end face, located inside the butt joint base (1), of the first axial ejector rod (7) is provided with pressure-sensitive ceramic (20), and a display device (19) connected with the pressure-sensitive ceramic is arranged outside the butt joint base (1).

4. An accelerometer movement docking structure as claimed in claim 3 wherein: the end surface of the second axial mandril (8) facing the first axial mandril (7) is spherical.

5. A docking method using the accelerometer core docking structure of any of claims 1 to 4, comprising the steps of:

s1, rotating the first radial adjusting rod (5) and the second radial adjusting rod (6) to enable the first radial adjusting rod (5) to push the first radial push plate (3) to move inwards, and enabling the second radial adjusting rod (6) to push the second radial push plate (4) to move inwards;

s2, placing the watch core (12) to be installed between the first radial push plate (3) and the second radial push plate (4);

s3, rotating the first radial adjusting rod (5) and the second radial adjusting rod (6), and adjusting the radial position of the watch core (12) to be installed through the first radial push plate (3) and the second radial push plate (4) to enable the mass center of the watch core (12) to be installed, the first axial ejector rod (7) and the second axial ejector rod (8) to be located on the same straight line;

s4, rotating the first axial ejector rod (7) to enable the first axial ejector rod (7) and the second axial ejector rod (8) to respectively abut against two axial end faces of the watch core (12) to be installed;

s5, pouring glue into the butt joint base (1) for packaging;

s6, removing the first axial mandril (7), the first radial adjusting rod (5) and the second radial adjusting rod (6).

Technical Field

The invention belongs to an accelerometer mounting structure and an accelerometer mounting method, and particularly relates to an accelerometer core butt joint structure and an accelerometer core butt joint method.

Background

The accelerometer is used in various flight navigation systems widely during inertial navigation by measuring acceleration according to Newton's second law, and is one of the core components of the navigation system. The meter core butt joint of the accelerometer is to overcome the repulsion force of the upper and lower torquers, the upper and lower torquers and the pendulum assembly are precisely butt jointed together through external force, and the coaxiality of the upper and lower torquers and the pendulum assembly strictly meet the technical requirements. The butt joint is a key process for assembling the accelerometer, and the accuracy of the butt joint directly determines the range of the accelerometer and the subsequent test accuracy.

The leveling principle of the existing accelerometer core butt joint is shown in fig. 1, a core 01 of an accelerometer is placed in a butt joint base 04, a lower torque device 02 of the core 01 is close to the left end face of the butt joint base 04, then a pendulum assembly 05 is placed on an upper torque device 06, then the lower torque device 02 is close to the left pendulum assembly 05 through a force application screw 03 at the right end, and when the thrust of the force application screw 03 is sensed to be proper, an upper torque device 06, a lower torque device 02 and the pendulum assembly 05 are fixed by filling glue to form a sandwich structure.

The process has the defect that the butt joint force applied to the watch core 01 cannot be quantified, and in actual operation, if the butt joint force is too large, the pendulum piece is damaged, and even breaks when the butt joint force is serious. In addition, as shown in fig. 2, three bosses 07 are arranged on the pendulum assembly 05, so that the centroid 08 of the pendulum assembly 05 is not coincident with the centroid, and the stress point of the butt joint base 04 is at the center position of the watch core 01, so that the three bosses 07 are stressed unevenly, two bosses 07 near the center position are stressed more, and the bosses 07 far away from the center position are stressed less.

Disclosure of Invention

The invention mainly aims to solve the technical problems that in the prior art, when a meter core is butted, the butting force cannot be quantized, and the meter core is damaged or butted inaccurately due to overlarge butting force and uneven force application, and provides a meter core butting structure and a butting method of an accelerometer.

In order to achieve the purpose, the invention provides the following technical scheme:

an accelerometer core butt joint structure is characterized by comprising a first axial ejector rod, a second axial ejector rod, a first radial push plate, a second radial push plate, a first radial adjusting rod and a second radial adjusting rod;

the first axial ejector rod penetrates through the side wall of the butt joint base and is arranged along the axial direction of the watch core to be installed, a first installation seat is sleeved outside the first axial ejector rod and is installed in the butt joint base, and the first installation seat is in threaded fit with the first axial ejector rod;

the second axial ejector rod is coaxially arranged with the first axial ejector rod and is arranged in the butt joint base through a second mounting seat; the front part of the second mounting seat is a hollow cavity with an opening at the front end, a first spring is arranged in the hollow cavity, the rear end of the second axial ejector rod is in contact with the first spring, the front end of the second axial ejector rod penetrates through the opening at the front end of the second mounting seat and then extends outwards, and the inner diameter of the opening at the front end of the second mounting seat is smaller than the outer diameter of the rear end of the second axial ejector rod; the rear part of the second mounting seat is mounted in the butt joint base;

the first radial adjusting rod and the second radial adjusting rod penetrate through the side wall of the butt joint base, the first radial adjusting rod and the second radial adjusting rod are oppositely arranged along the radial direction of the watch core to be installed, and the first radial adjusting rod and the second radial adjusting rod are in threaded fit with the butt joint base;

the upper end of the first radial push plate and the upper end of the second radial push plate are both installed in the butt joint base in a hinged mode, the outer side of the first radial push plate is opposite to the end portion of the first radial adjusting rod, and the outer side of the second radial push plate is opposite to the end portion of the second radial adjusting rod.

Further, the device also comprises a first radial fine adjustment rod and a second radial fine adjustment rod;

a first sliding cavity and a second sliding cavity are arranged in the butt joint base along the vertical direction;

the first mounting seat is mounted in the first sliding cavity, a second spring is arranged between the first mounting seat and the bottom surface of the first sliding cavity, one end of a first radial fine adjustment rod penetrates into the butt joint base to abut against the upper end of the first mounting seat, and the first radial fine adjustment rod is in threaded fit with the butt joint base;

the second mounting seat is mounted in the second sliding cavity, a third spring is arranged between the second mounting seat and the bottom surface of the second sliding cavity, one end of a second radial fine adjustment rod penetrates into the butt joint base to abut against the upper end of the rear portion of the second mounting seat, and the second radial fine adjustment rod is in threaded fit with the butt joint base.

Furthermore, the end face, located inside the butt joint base, of the first axial ejector rod is provided with pressure-sensitive ceramic, and a display device connected with the pressure-sensitive ceramic is arranged outside the butt joint base.

Furthermore, the end surface of the second axial mandril facing the first axial mandril is spherical.

The method for butting the accelerometer movement butting structure is characterized by comprising the following steps of:

s1, rotating the first radial adjusting rod and the second radial adjusting rod to enable the first radial adjusting rod to push the first radial push plate to move inwards and the second radial adjusting rod to push the second radial push plate to move inwards;

s2, placing the watch core to be installed between the first radial push plate and the second radial push plate;

s3, rotating the first radial adjusting rod and the second radial adjusting rod, and adjusting the radial position of the watch core to be installed through the first radial push plate and the second radial push plate to enable the mass center of the watch core to be installed, the first axial ejector rod and the second axial ejector rod to be located on the same straight line;

s4, rotating the first axial ejector rod to enable the first axial ejector rod and the second axial ejector rod to respectively abut against two axial end faces of the watch core to be installed;

s5, pouring glue into the butt joint base for packaging;

s6, removing the first axial mandril, the first radial adjusting rod and the second radial adjusting rod.

Compared with the prior art, the invention has the beneficial effects that:

1. in addition, the flexible butt joint enables the application force to be slowly increased when the surface core to be installed applies force axially, the surface core to be installed cannot be damaged due to too violent application of force, and the stepping precision of surface core butt joint is also increased. Through adjusting first radial regulation pole and the radial regulation pole of second, promote first radial push pedal and the radial push pedal of second, can promote the watch core upward movement, when outwards adjusting first radial regulation pole and the radial regulation pole of second, first radial push pedal and the radial push pedal of second will tend to vertical state, and the watch core can the downstream, and first radial regulation pole and the radial regulation pole of second can realize radial regulation to the watch core. The butt joint device has the advantages of compact structure, high adjustment precision and convenience in operation.

2. A first radial fine adjustment rod and a second radial fine adjustment rod of the invention are respectively abutted against a first mounting base and a second mounting base. When the first radial fine adjustment rod and the second radial fine adjustment rod are adjusted downwards, the first mounting base and the second mounting base can be pressed downwards; when upwards adjusting first radial fine tuning pole and the radial fine tuning pole of second, under the effect of second spring and third spring, can drive first installation base and second installation base upward movement. The fine adjustment of the contact points of the first axial ejector rod and the second axial ejector rod with the watch core can be realized, and the adjustment is more convenient.

3. According to the invention, the pressure-sensitive ceramic is arranged on the end face of the first axial ejector rod, when the first axial ejector rod is adjusted, pressure is directly acted on the surface of the pressure-sensitive ceramic to cause deformation of the pressure-sensitive ceramic, the change of external pressure can be converted into the change of resistance value by utilizing the piezoresistive property of a strain resistor, and then the result is displayed on a display device.

4. The end surface of the second axial ejector rod is a spherical surface, the contact between the second axial ejector rod and the watch core to be installed is changed from the existing surface-surface contact into point-surface contact, the follow-up property of the butt joint of the watch core is ensured, and the point-to-point matching degree of the contact point and the geometric centroid of the watch core is ensured.

5. The method for butting the accelerometer core comprises the steps of enabling a first radial push plate and a second radial push plate to be close to each other through a first radial adjusting rod and a second radial adjusting rod, placing the to-be-installed core between the two radial push plates, axially positioning the to-be-installed core, radially adjusting again to enable the mass center of the to-be-installed core, a first axial ejector rod and a second axial ejector rod to be located on the same straight line, stably positioning the core in a butting base, and pouring glue for packaging to complete butting. The butt joint method is convenient to operate and convenient to popularize and apply.

Drawings

FIG. 1 is a schematic structural diagram of a core butt joint of an accelerometer in the background art;

fig. 2 is a schematic structural diagram of a pendulum assembly in the background art.

In fig. 1 and 2: 01-watch core, 02-lower torquer, 03-force application screw, 04-butt joint base, 05-pendulum component, 06-upper torquer, 07-boss and 08-centroid.

FIG. 3 is a schematic structural view of a docking station mounted watch core according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a watch core to be mounted in radial butt joint according to a first embodiment and a second embodiment of the present invention;

fig. 5 is a schematic structural diagram of a watch core to be mounted in two pairs according to an embodiment of the present invention.

In fig. 3 to 5: 1-butt joint base, 2-first spring, 3-first radial push plate, 4-second radial push plate, 5-first radial adjusting rod, 6-second radial adjusting rod, 7-first axial ejector rod, 8-second axial ejector rod, 9-first mounting seat, 10-second mounting seat, 11-limiting boss, 12-watch core to be mounted, 13-first sliding cavity, 14-second sliding cavity, 15-second spring, 16-third spring, 17-first radial fine adjusting rod, 18-second radial fine adjusting rod, 19-display device, 20-pressure sensitive ceramic, 21-upper torquer, 22-lower torquer and 23-quartz swinging piece.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention and the accompanying drawings, and it is obvious that the described embodiments do not limit the present invention.