Quartz accelerometer watch core temperature coefficient rapid screening test tool and method

Abstract

The application relates to a quartz accelerometer watch core temperature coefficient rapid screening test tool and method, and aims to solve the technical problems of high cost and difficult batch production caused by the disassembly of the watch during the whole watch test of the existing quartz accelerometer, and the scrapping of part of the devices. The tool comprises a process shell, a compression nut, a first positioning ring and a second positioning ring respectively sleeved at two ends of a to-be-tested watch core, and a process circuit. The first positioning ring and the second positioning ring are coaxially arranged in the process shell from the lower end to the upper end, the terminal post of the to-be-tested watch core is located in the second positioning ring, the process shell is provided with a scale line for aligning the scale line of the to-be-tested watch core; the compression nut is a stepped column structure, the small-diameter section of the compression nut extends into the process shell and is connected with the process shell, and the lower end surface of the compression nut compresses the upper end surface of the second positioning ring; the process circuit is installed on the large-diameter section of the compression nut, is electrically connected with an external test device, and is electrically connected with the lead wire of the terminal post of the to-be-tested watch core. A test method based on the tool is further disclosed.

Description

TECHNICAL FIELD

[0001] The present application relates to a quartz accelerometer, in particular to a quartz accelerometer watch core temperature coefficient rapid screening test tool and method. BACKGROUND

[0002] The quartz accelerometer has the advantages of small size, light weight, high precision, etc., and has developed rapidly since the 1960s and is widely used in aerospace, aviation, navigation, land, and civil technology fields. With the increasing demand for quartz accelerometers in various industries, how to realize efficient, low-cost rapid screening test of quartz accelerometers has become an important issue. Among them, the temperature characteristic is an important indicator of the quartz accelerometer, and the temperature characteristic data needs to be obtained in advance, so it is particularly important to design a quartz accelerometer watch core temperature coefficient rapid screening test tool under the existing test equipment conditions. At present, most of the watch core temperature coefficient screening methods use the quartz accelerometer whole watch for test judgment. During the test, due to the problems of functional parameter out-of-tolerance, full temperature coefficient out-of-tolerance, test data out-of-tolerance after temperature cycle, stability test precision out-of-tolerance, etc., the quartz accelerometer needs to be disassembled for inspection. However, due to the immaturity of the quartz accelerometer disassembly technology, the servo circuit components and mechanical processing parts are scrapped after disassembly, which greatly increases the production cost of the quartz accelerometer and has certain disadvantages for batch production. SUMMARY

[0003] The purpose of the present application is to solve the technical problems of the existing quartz accelerometer whole watch test, which leads to the servo circuit components and mechanical processing parts being scrapped, greatly increasing the production cost of the quartz accelerometer, and being not conducive to batch production, and to provide a quartz accelerometer watch core temperature coefficient rapid screening test tool and method.

[0004] In order to achieve the above purpose, the present application adopts the following technical scheme:

[0005] A quartz accelerometer watch core temperature coefficient rapid screening test tool, characterized in that: comprising a process shell, a first positioning ring, a second positioning ring, a compression nut and a process circuit mounted on the compression nut;

[0006] The first positioning ring and the second positioning ring are coaxially arranged in the inside of the process shell from the lower end to the upper end, and the second positioning ring does not contact the inner wall of the process shell; the first positioning ring is used for sleeving the outside of the lower end of the quartz accelerometer watch core to be tested; the second positioning ring is used for sleeving the outside of the upper end of the quartz accelerometer watch core to be tested, and the terminal post of the watch core is located in the second positioning ring; the process shell is provided with a scale line for aligning with the scale line of the quartz accelerometer watch core to be tested;

[0007] The compression nut is a stepped column structure, the small-diameter section of which extends into the process shell and is connected with the process shell, and the lower end surface thereof is compressed on the upper end surface of the second positioning ring, the process circuit is installed on the upper end surface of the large-diameter section of the compression nut and is electrically connected with the lead wire of the measuring quartz accelerometer watch core, and the process circuit is used for electrical connection with the external test equipment.

[0008] Further, in order to fix the measured quartz accelerometer watch core and avoid installation errors, a positioning step surface is arranged along the circumference in the cavity of the process shell; the outer sidewall of the first positioning ring is in interference fit with the small-diameter hole sidewall of the positioning step surface, and the lower end surface of the first positioning ring abuts against the bottom of the process shell.

[0009] Further, in order to avoid the risk of non-isolation caused by the possible contact between the measuring quartz accelerometer watch core terminal and the compression nut, the first positioning ring and the second positioning ring are made of non-metallic insulating material; and the height of the upper end surface of the second positioning ring is greater than the height of the measuring quartz accelerometer watch core terminal.

[0010] Further, in order to facilitate disassembly, two fixing washers are further included; one end of the fixing washer is installed on the upper end surface of the large-diameter section of the compression nut, and the other end is pressed on the process circuit.

[0011] Further, the size of the process shell is the same as the size of the shell of the quartz accelerometer; and the outer diameter of the process shell is Φ25.4mm, so as to ensure that the installation of the process shell is consistent with the installation of the quartz accelerometer and the general test equipment.

[0012] Further, the inner wall of the upper end of the process shell is provided with internal threads, and the outer wall of the small-diameter section of the compression nut is provided with external threads; the small-diameter section of the compression nut is in threaded connection with the process shell.

[0013] Meanwhile, the application further provides a quartz accelerometer watch core temperature coefficient rapid screening test method, which is based on the quartz accelerometer watch core temperature coefficient rapid screening test tool, and the speciality thereof lies in comprising the following steps:

[0014] Step 1, installing the measured quartz accelerometer watch core in the process shell through the first positioning ring and the second positioning ring, and aligning the scale line of the measured quartz accelerometer watch core with the scale line on the process shell; the small-diameter section of the compression nut extends into the process shell, and the lower end surface thereof is compressed on the upper end surface of the second positioning ring; and connecting the process circuit with the test equipment.

[0015] Step 2, testing the temperature coefficient of the measured quartz accelerometer watch core through the test equipment.

[0016] Step 3, if the quartz accelerometer movement temperature coefficient test is unqualified, return to the factory for repair, if the quartz accelerometer movement temperature coefficient test is qualified, complete the test;

[0017] Step 4, after the test is completed, the quartz accelerometer movement is disassembled, and the next quartz accelerometer movement to be tested is screened and tested until the screening test of the batch of quartz accelerometer movements to be tested is completed.

[0018] The beneficial effects of the present application are:

[0019] 1, the present application provides a kind of quartz accelerometer movement temperature coefficient rapid screening test tool, overall installation is simple, can be repeatedly used and easy to disassemble, solve the quartz accelerometer whole watch test when because of disassembling leads to servo circuit component and mechanical processing parts scrap, make the production cost of quartz accelerometer greatly increases and is not conducive to mass production problem.In addition, the line on the process shell in the application is aligned with the line of the quartz accelerometer movement to be tested, and the movement can be quickly and accurately positioned when installing.

[0020] 2, the first positioning ring in the application is in interference fit with the small diameter hole side wall of the positioning step surface, which can fix the quartz accelerometer movement to be tested, and avoid installation error. The height of the upper end surface of the second positioning ring is greater than the height of the terminal post of the quartz accelerometer movement to be tested, which can avoid the risk of non-insulation caused by the possible contact between the terminal post and the compression nut. In addition, the first positioning ring and the second positioning ring are made of non-metallic insulating material, which further realizes the effect of insulation.

[0021] 3, the process shell in the application adopts the general size Φ25.4mm of quartz accelerometer used internationally and domestically, which ensures the installation of the process shell and the installation of the quartz accelerometer and the general test equipment.

[0022] 4, the present application provides a kind of quartz accelerometer movement temperature coefficient rapid screening test method, which can realize the purpose of rapid and batch screening, improve efficiency and reduce cost. DETAILED DESCRIPTION

[0023] Figure 1 is the structure diagram of the quartz accelerometer movement temperature coefficient rapid screening test tool embodiment of the present application;

[0024] Figure 2 is the structure diagram of the process shell in the embodiment of the present application;

[0025] Figure 3 is the installation structure diagram of the quartz accelerometer movement to be tested and the process shell in the embodiment of the present application;

[0026] Figure 4is a sectional view of the quartz accelerometer watch core to be tested in the process shell in the embodiment of the present application;

[0027] Figure 5 is a first perspective view of the structure of the embodiment of the present application in which the compression nut compresses the second positioning ring;

[0028] Figure 6 is a second perspective view of the structure of the embodiment of the present application in which the compression nut compresses the second positioning ring;

[0029] Figure 7 is a schematic diagram of the mounting structure of the embodiment of the present application.

[0030] Reference numerals:

[0031] 1-process shell, 10-graduated line, 11-positioning step surface, 2-first positioning ring, 3-second positioning ring, 4-compression nut, 5-process circuit, 6-fixing washer. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Hereinafter, the terms "first" and "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features.

[0034] As shown in Figure 1 A quartz accelerometer watch core temperature coefficient rapid screening test tool, comprising a process shell 1, a first positioning ring 2, a second positioning ring 3, a compression nut 4, two fixing washers 6, and a process circuit 5. Specifically, as shown in Figures 1-6As shown, the size of the process shell 1 is the same as the shell size of the quartz accelerometer, and the outer diameter size of the process shell 1 is Φ25.4mm; the first positioning ring 2 and the second positioning ring 3 are coaxially arranged in the process shell 1 from the lower end to the upper end, and the second positioning ring 3 does not contact the inner wall of the process shell 1, the first positioning ring 2 is used for sleeving the outside of the lower end of the measured quartz accelerometer core, and the second positioning ring 3 is used for sleeving the outside of the upper end of the measured quartz accelerometer core, and the terminal post of the core is located in the second positioning ring 3, and the height of the upper end surface of the second positioning ring 3 is greater than the height of the terminal post of the measured quartz accelerometer core. Wherein, the cavity of the process shell 1 is provided with a positioning step surface 11 along the circumference thereof, the outer wall of the first positioning ring 2 is in interference fit with the small diameter hole side wall of the positioning step surface 11, and the lower end surface of the first positioning ring 2 abuts against the bottom of the process shell 1, in addition, the process shell 1 is provided with a scale line 10, and the scale line of the measured quartz accelerometer core is aligned with the scale line 10 on the process shell 1; the compression nut 4 is a stepped column structure, the small diameter section of which extends into the process shell 1 and is connected with the process shell 1, and the lower end surface thereof is compressed on the upper end surface of the second positioning ring 3, in the embodiment, the inner wall of the upper end of the process shell 1 is provided with an internal thread, the outer wall of the small diameter section of the compression nut 4 is provided with an external thread, the small diameter section of the compression nut 4 is threadedly connected with the process shell 1, after connection, the side surface of the large diameter section of the compression nut 4 is flush with the side surface of the upper end of the process shell 1, and the specific structure is shown in Figure 1 and Figure 7 ; the process circuit 5 is installed on the large diameter section of the compression nut 4, the upper surface thereof is flush with the upper end surface of the large diameter section of the compression nut 4, and the two fixed washers 6 are installed on the upper end surface of the large diameter section of the compression nut 4 through the locking screw universal piece, and the other end is pressed on the upper surface of the process circuit 5, and the specific structure is shown in Figure 7 , in addition, the process circuit 5 is electrically connected with the lead wire of the terminal post of the measured quartz accelerometer core, and the process circuit 5 is electrically connected with the external test equipment through the insertion pin on the upper surface thereof. In addition, the first positioning ring 2 and the second positioning ring 3 are made of non-metal insulating material, and the diameters of the first positioning ring 2 and the second positioning ring 3 are the same.

[0035] Based on the above-mentioned quartz accelerometer core temperature coefficient rapid screening test tool, the application further provides a quartz accelerometer core temperature coefficient rapid screening test method, which comprises the following steps:

[0036] Step 1, install the measured quartz accelerometer core in the process shell 1 through the first positioning ring 2 and the second positioning ring 3, and align the scale line of the measured quartz accelerometer core with the scale line 10 on the process shell 1; the small diameter section of the compression nut 4 extends into the process shell 1 and is connected with the process shell 1, and the lower end surface thereof is compressed on the upper end surface of the second positioning ring 3; connect the process circuit 5 with the test equipment;

[0037] Step 2, test the temperature coefficient of the quartz accelerometer table core to be tested by the test equipment;

[0038] Step 3, if the temperature coefficient of the quartz accelerometer table core to be tested is unqualified, return to the factory for repair, if the temperature coefficient of the quartz accelerometer table core to be tested is qualified, complete the test;

[0039] Step 4, after the test is completed, the quartz accelerometer table core is removed, and the next quartz accelerometer table core to be tested is selected and tested until the selection and test of the batch of quartz accelerometer table cores to be tested are completed.

[0040] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any change or replacement within the technical range disclosed by the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A rapid screening test fixture for the temperature coefficient of a quartz accelerometer core, characterized in that: It includes a process housing (1), a first positioning ring (2), a second positioning ring (3), a clamping nut (4), and a process circuit (5) mounted on the clamping nut (4); The first positioning ring (2) and the second positioning ring (3) are coaxially arranged inside the process housing (1) from bottom to top, and the second positioning ring (3) does not contact the inner wall of the process housing (1); the first positioning ring (2) is used to be sleeved on the outer side of the lower end of the quartz accelerometer core to be tested; the second positioning ring (3) is used to be sleeved on the outer side of the upper end of the quartz accelerometer core to be tested, and the terminal of the core is located inside the second positioning ring (3); the process housing (1) is provided with a scale line (10) for alignment with the scale line of the quartz accelerometer core to be tested; The clamping nut (4) is a stepped columnar structure. Its small diameter section extends into the process housing (1) and connects with the process housing (1). Its lower end face is pressed against the upper end face of the second positioning ring (3). The process circuit (5) is installed on the upper end face of the large diameter section of the clamping nut (4) and is electrically connected to the lead wire of the core terminal of the quartz accelerometer to be tested. The process circuit (5) is used to electrically connect with external testing equipment.

2. The rapid screening test fixture for the temperature coefficient of the quartz accelerometer core as described in claim 1, characterized in that: The process housing (1) has a positioning step surface (11) arranged along its circumference in the cavity; the outer wall of the first positioning ring (2) is interference-fitted with the small diameter hole side wall of the positioning step surface (11), and the lower end face of the first positioning ring (2) abuts against the bottom of the process housing (1).

3. The rapid screening test fixture for the temperature coefficient of a quartz accelerometer core as described in claim 2, characterized in that: The first positioning ring (2) and the second positioning ring (3) are made of non-metallic insulating material; the height of the upper end face of the second positioning ring (3) is greater than the height of the terminal block of the quartz accelerometer core to be tested.

4. The rapid screening test fixture for the temperature coefficient of the quartz accelerometer core as described in claim 3, characterized in that: It also includes two fixing washers (6); one end of the fixing washers (6) is installed on the upper end face of the large diameter section of the clamping nut (4), and the other end is pressed on the process circuit (5).

5. The rapid screening test fixture for the temperature coefficient of the quartz accelerometer core according to claim 4, characterized in that: The dimensions of the process housing (1) are the same as those of the quartz accelerometer housing; the outer diameter of the process housing (1) is Φ25.4mm.

6. The rapid screening test fixture for the temperature coefficient of a quartz accelerometer core according to claim 5, characterized in that: The inner wall of the upper end of the process housing (1) is provided with an internal thread, and the outer wall of the small diameter section of the clamping nut (4) is provided with an external thread; the small diameter section of the clamping nut (4) is threadedly connected to the process housing (1).

7. A rapid screening test method for the temperature coefficient of a quartz accelerometer core, based on the rapid screening test fixture for the temperature coefficient of a quartz accelerometer core as described in any one of claims 1-6, characterized in that, Includes the following steps: Step 1: Install the quartz accelerometer core to be tested into the process housing (1) through the first positioning ring (2) and the second positioning ring (3), and align the scale line of the quartz accelerometer core to be tested with the scale line (10) on the process housing (1); the small diameter section of the clamping nut (4) extends into the process housing (1) and connects to the process housing (1), and its lower end face presses against the upper end face of the second positioning ring (3); connect the process circuit (5) to the testing equipment; Step 2: Test the temperature coefficient of the core of the quartz accelerometer under test using testing equipment; Step 3: If the core temperature coefficient of the quartz accelerometer under test fails the test, it shall be returned to the factory for repair; if the core temperature coefficient of the quartz accelerometer under test passes the test, the test is completed. Step 4: After the test is completed, remove the quartz accelerometer core and proceed with the screening test of the next quartz accelerometer core to be tested, until the screening test of this batch of quartz accelerometer cores is completed.

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