A universal quality characteristic parameter measuring device

Abstract

A universal quality characteristic parameter measuring device, characterized in that: the device includes a vertical turntable installed at the center of a base and performing torsional pendulum motion around a vertical axis, and a horizontal tooling installed above the vertical turntable; a plurality of weighing sensors are arranged between the top surface of the base and the bottom surface of the vertical turntable, and a spiral weighing top whose number and position match the weighing sensor is installed on the horizontal tooling chassis of the horizontal tooling, and the spiral weighing top is screwed onto the horizontal tooling chassis through a weighing nut, and the lower end of the spiral weighing top extends to the top of the weighing sensor through a through hole machined on the vertical turntable; a horizontal turntable for completing the torsional pendulum motion of the product around the horizontal axis is installed at the rear end of the horizontal tooling through an axial moving mechanism, and a left-right movable measuring ruler and an auxiliary support for providing rotational support for the front section of the product are installed in sequence at the front end of the horizontal tooling from the front to the rear.

Description

Technical Field

[0001] The invention relates to a universal quality characteristic parameter measuring device, which can complete the measurement of multiple product quality characteristic parameters on one device. Background Art

[0002] Mass, center of mass, and moment of inertia are the most important components of quality characteristic parameters. In the field of aerospace, mass directly belongs to the takeoff load, while center of mass and moment of inertia are related to the difficulty of flight trajectory control and attitude adjustment. They are important parameters in the flight control of various weapons and equipment. Product quality characteristic parameters can be obtained through equipment measurement. With the development needs, new models of products are increasing, and product sizes vary greatly. In order to save costs, improve measurement efficiency, and reduce the space occupied by equipment, a quality characteristic measurement device is required to meet the measurement needs of multiple products, and its universal requirements are getting higher and higher. In the process of measuring product quality characteristic parameters, traditional equipment needs to change the product posture. Generally, the product needs to be horizontal and tilted (vertical) in two postures. The product needs to be hoisted again or a drive structure needs to be set to change the product posture. The operation is complicated and the efficiency is low, and it is increasingly unable to meet the needs of actual combat. Summary of the invention

[0003] The purpose of the present invention is to provide a universal quality characteristic parameter measuring device to address the deficiencies in the above-mentioned prior art. The device of the present invention can meet the measurement requirements of various products by replacing the adapter plate and the counterweight and support on the mobile horizontal tooling, and has strong applicability. The product only needs to be clamped once, and all quality characteristic parameters can be measured in a horizontal state, and the measurement operation is simple.

[0004] The purpose of the present invention can be achieved by the following technical measures:

[0005] The universal quality characteristic parameter measuring device of the present invention comprises a vertical turntable installed at the center position of a base and performing torsional pendulum motion around a vertical axis, and a horizontal tooling installed above the vertical turntable; a plurality of weighing sensors are arranged between the top surface of the base and the bottom surface of the vertical turntable, and a spiral weighing top whose quantity and position match those of the weighing sensors is installed on the horizontal tooling chassis of the horizontal tooling, and the spiral weighing top is screwed onto the horizontal tooling chassis through a weighing nut, and the lower end of the spiral weighing top extends to the top of the weighing sensor through a through hole machined on the vertical turntable; a horizontal turntable for completing the torsional pendulum motion of the product around the horizontal axis is installed at the rear end of the horizontal tooling through an axial moving mechanism, and a left-right movable measuring ruler and an auxiliary support for providing rotational support for the front section of the product are installed in sequence at the front end of the horizontal tooling from the front to the rear.

[0006] The horizontal turntable of the present invention is installed in a vertical manner on the front side of the movable support, and the movable support is installed on the horizontal tooling through a screw used to drive the movable support to move along the guide rail arranged in the length direction; a product transfer plate is installed on the front side facade of the horizontal turntable.

[0007] The vertical turntable is installed at the center of the base through a torsion bar and a bearing.

[0008] The horizontal turntable is combined with the front facade of the movable support through a turntable bearing, fixed pins installed on both sides of the center of the horizontal turntable in a symmetrical manner, and a torsion spring connected to the fixed pins.

[0009] The left-right movable measuring ruler is installed on both sides of the movable counterweight and is respectively slidably matched with the guide rods arranged on both sides of the horizontal tooling. The movable counterweight is installed above the front end of the horizontal tooling through a guide rail and a screw rod.

[0010] The auxiliary support comprises a support beam with rollers installed at both ends. The bottom of the support beam is installed on the horizontal tooling through left and right guide rods, and a lead screw for adjusting the height of the auxiliary support is installed between the left and right guide rods.

[0011] More specifically, the present invention presses the horizontal tooling onto the corresponding weighing sensor via a plurality of spiral weighing tips (the spiral weighing tips can realize the contact and separation between the horizontal tooling and the weighing sensor through rotation, thereby realizing the switching of the product mass center of mass and moment of inertia functions). The product mass and three-dimensional center of mass are measured in combination with the reading of the moving measuring ruler. After the spiral weighing tips are rotated and separated from the weighing sensor, they can be fixed to the vertical turntable to complete the torsional motion of the product around the vertical axis. The product can be fixed on the horizontal turntable to complete the torsional motion of the product around the horizontal axis, thereby realizing the measurement of the three-dimensional moment of inertia of the measured product. That is, the measured product can be clamped on the measuring device only once, and all mass characteristic parameters including mass, three-dimensional center of mass, and three-dimensional moment of inertia can be completed in a horizontal state.

[0012] For products of different sizes, the product adapter plate can be replaced to fix the connection with the horizontal tooling. The movable support and the movable counterweight can be moved on the horizontal tooling, so that the center of mass of the tooling and the product being measured can always be in the center position, thereby improving the measurement accuracy.

[0013] The auxiliary support is equipped with a roller that can be raised and lowered to provide rotational support for the front section of the product, meeting the measurement requirements of long-sized products. By moving the measuring ruler left and right, the upper and lower diagonal points of the measured surface can be measured respectively, reducing the measurement error introduced by the deformation and tilt of the measured surface.

[0014] The working principle and beneficial effects of the present invention are as follows:

[0015] In the device of the present invention, by replacing the product adapter plate, the connection and fixation of products of different sizes with the measuring tooling can be achieved to meet the measurement requirements of products of different sizes. The multiple weighing sensors provided in the present invention can measure the weight change of the tooling itself and after the product is placed, and the moving ruler reading can measure the distance from the end face of the product to the measurement reference. The product is rotated 90 degrees in a horizontal state on the horizontal turntable (the lateral center of mass component is switched), and the product mass and three-dimensional center of mass are calculated by the static equilibrium formula. The vertical turntable of the measuring device realizes the torsional pendulum movement of the product around the vertical axis, and the horizontal turntable can make the product torsional pendulum movement around the horizontal axis. The product is rotated 90 degrees in a horizontal state on the horizontal turntable (the lateral moment of inertia component is switched), and the measurement principle of the torsional pendulum method is used to complete the measurement of the three-dimensional moment of inertia of the product.

[0016] The present invention can meet the measurement requirements of products of various sizes by using only one measuring device, has strong versatility, and the measured product only needs to maintain a horizontal posture on the device to complete the measurement of all parameters including mass, three-dimensional center of mass, and three-dimensional moment of inertia. The operation is convenient and has great value for promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the measuring device of the present invention.

[0018] Figure 2 for Figure 1 Top view of the .

[0019] Figure 3 A schematic diagram of auxiliary support.

[0020] Figure 4 Schematic diagram of the working principle of the vertical turntable torsion pendulum motion mechanism and the spiral weighing top (the part above the horizontal tooling chassis is hidden).

[0021] Figure 5 Schematic diagram of the horizontal turntable torsion pendulum motion mechanism.

[0022] Figure 6 yes Figure 5 Side view (partial section).

[0023] The serial numbers in the figure are: 1 is the base, 2 is the weighing sensor, 3 is the vertical turntable, 3-1 is the bearing, 3-2 is the torsion bar, 4 is the spiral weighing top, 4-1 is the weighing nut, 4-2 is the horizontal tooling chassis, 4-3 is the positioning pin, 5 is the horizontal tooling, 6 is the mobile support, 7 is the horizontal turntable, 7-1 is the turntable bearing, 7-2 is the torsion spring, 7-3 is the fixing pin, 8 is the product adapter plate, 9 is the guide rail, 10 is the screw, 11 is the auxiliary support, 11-1 is the roller, 11-2 is the guide rod, 11-3 is the screw, 12 is the mobile counterweight, 13 is the guide rail, 14 is the screw, 15 is the mobile measuring ruler, and 16 is the product. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with examples and (attached drawings).

[0025] like Figure 1 , Figure 2 As shown, the universal quality characteristic parameter measuring device of the present invention comprises a vertical turntable 3 installed at the center position of a base 1 and performing torsional pendulum motion around a vertical axis, and a horizontal tooling 5 installed above the vertical turntable 3; a plurality of weighing sensors 2 are arranged between the top surface of the base and the bottom surface of the vertical turntable, and spiral weighing tips 4 whose number and position match those of the weighing sensors 2 are installed on the horizontal tooling chassis 4-2 of the horizontal tooling 5, and the spiral weighing tips 4 are screwed on the horizontal tooling chassis 4-2 through a weighing nut 4-1, and the lower end of the spiral weighing tips 4 extends to the top of the weighing sensors 2 through a through hole processed on the vertical turntable 3 (see Figure 4 A horizontal turntable 7 for completing the torsional motion of the product around the horizontal axis is installed at the rear end of the horizontal tooling 5 through an axial moving mechanism, and a left-right moving measuring ruler 15 and an auxiliary support 11 for providing rotational support for the front section of the product are installed in sequence at the front end of the horizontal tooling.

[0026] like Figure 4 As shown, the rotary weighing top 4 is provided with a thread matching with the weighing nut 4-1, and the weighing nut 4-1 is installed on the horizontal tooling chassis 4-2. When the rotary weighing top rotates and extends downward in the weighing nut, the horizontal tooling chassis is separated from the vertical turntable 3, and the rotary weighing top is directly pressed on the weighing sensor 2 to measure the product quality and center of mass; when the weighing top is shortened, the horizontal tooling chassis is directly pressed on the vertical turntable and fixed by the locating pins 4-3 on both sides of the horizontal tooling chassis, and screws can also be arranged to lock it to measure the product's rotational inertia.

[0027] The horizontal turntable 7 of the present invention is installed in a vertical manner in front of the mobile support 6, and the mobile support 6 is installed on the horizontal fixture 5 through a lead screw 10 for driving the guide rails arranged along the length direction of the mobile support to make displacement movements; a product transfer plate 8 is installed on the front side of the horizontal turntable 7; the horizontal turntable 7 is connected to the front side of the mobile support 6 through a turntable bearing 7-1, fixed pins 7-3 installed on both sides of the center of the horizontal turntable in a symmetrical manner, and a torsion spring 7-2 connected to the fixed pin. (See Figure 5 , 6 ).

[0028] The left-right movable measuring ruler 15 is installed on both sides of the movable counterweight 12 and slidably cooperates with the guide rods arranged on both sides of the horizontal tooling 5 respectively. The movable counterweight 12 is installed above the front end of the horizontal tooling 5 through the guide rail 13 and the screw rod 14.

[0029] like Figure 4 As shown, the vertical turntable 3 is installed at the center of the base 1 through a torsion bar 3-2 and a bearing 3-1.

[0030] like Figure 3 As shown, the auxiliary support 11 includes a support beam with rollers 11-1 installed at both ends. The bottom of the support beam is installed on the horizontal tooling 5 through left and right guide rods 11-2, and a screw 11-3 for adjusting the height of the auxiliary support is installed between the left and right guide rods 11-2.

[0031] Furthermore, the main technical features of the present invention are: First, the measured products of different sizes can be fixedly connected to the horizontal tooling by replacing the product adapter plate 8, which has strong versatility. The movable support 6 and the movable counterweight 12 can move on the horizontal tooling 5, which can always ensure that the center of mass of the tooling and the measured product is in the center position, thereby improving the measurement accuracy; Second, the device of the present invention is arranged with a plurality of spiral weighing tips 4 and corresponding weighing sensors 2, which can realize the measurement of product quality and three-dimensional center of mass in combination with the mobile measuring ruler 15; the device can realize the torsional pendulum motion of the product around the vertical axis and the horizontal axis through the vertical turntable 3 and the horizontal turntable 7, thereby completing the measurement of the three-dimensional rotational inertia of the product.

[0032] According to the interface and centroid position requirements of the product 16 to be measured, replace the appropriate product adapter plate 8, adjust the position of the mobile support 6 and the mobile counterweight by rotating the screw rod, so that the initial centroid of the tooling and the centroid after the product is placed are basically in the center of the device. The horizontal tooling 5 is pressed on the corresponding weighing sensor 2 through multiple spiral weighing tips 4. The sensor first measures the empty plate state of the horizontal tooling, and then hoists the product and places it on the horizontal tooling. If the product is too long, it is necessary to install an auxiliary support 11 to support the front section of the product. The product quality is calculated by reading the reading change of the weighing sensor 2 before and after the product 16 is placed. The mobile measuring ruler can measure the distance from the end face of the product to the measurement reference. According to the reading change of multiple weighing sensors 2, the distance of the product centroid relative to the measurement reference can be calculated by the static balance formula, and then the position of the product centroid can be calculated. The product is rotated 90 degrees in a horizontal state on the horizontal turntable 7 (the lateral centroid component is switched), and the three-dimensional centroid of the product can be measured. There are two movable measuring rulers, which can measure the upper and lower diagonal points of the measured surface respectively. The two values ​​are usually one larger and one smaller. The average of the two numbers is taken during measurement, which can effectively eliminate the reference measurement error caused by the tilt and deformation of the product installation surface.

[0033] like Figure 3 As shown, the roller group of the auxiliary support 11 can move up and down along the guide rod under the drive of the screw rod to achieve the change and adjustment of the product support height. The product can rotate freely around the horizontal axis under the support.

[0034] like Figure 4As shown in FIG, the vertical turntable is connected to the torsion bar, and the rotating shaft is constrained by the bearing, so that the torsional swing motion of the vertical turntable around the vertical axis can be realized. Figure 5 As shown, the horizontal turntable can be connected to two symmetrical torsion springs through a fixed pin, and the turntable is constrained by a turntable bearing, so that the horizontal turntable can perform torsional pendulum motion around the horizontal axis. After the spiral weighing top 4 is rotated and separated from the weighing sensor, it can be fixed with the vertical turntable 3 to perform torsional pendulum motion around the vertical axis. The horizontal turntable 7 can make the measured product perform torsional pendulum motion around the horizontal axis. The product rotates 90 degrees in a horizontal state on the horizontal turntable 7 (the lateral moment of inertia component is switched), and the measurement principle of the torsional pendulum method is used to complete the measurement of the three-dimensional moment of inertia of the product.

Claims

1. A universal quality characteristic parameter measuring device, characterized in that: The device comprises a vertical turntable (3) installed at the center of a base (1) and performing torsional swinging motion around a vertical axis, and a horizontal tooling (5) installed above the vertical turntable (3); a plurality of weighing sensors (2) are arranged between the top surface of the base and the bottom surface of the vertical turntable; spiral weighing tips (4) whose number and positions match those of the weighing sensors (2) are installed on a horizontal tooling chassis (4-2) of the horizontal tooling (5); the spiral weighing tips (4) are screwed onto the horizontal tooling chassis (4-2) via a weighing nut (4-1); and the spiral weighing tips (4) The lower end of the horizontal tooling (5) passes through a through hole machined on the vertical turntable (3) and extends to the top of the weighing sensor (2); a horizontal turntable (7) for completing the torsional swing movement of the product around the horizontal axis is installed at the rear end of the horizontal tooling (5) through an axial moving mechanism, and a left-right movable measuring ruler (15) and an auxiliary support (11) for providing rotation support for the front section of the product are installed in sequence from the front to the back at the front end of the horizontal tooling; the horizontal turntable (7) is installed on the front side of the movable support (6) in a vertical arrangement, and the movable support is driven by a device for driving the movable support to move along the length direction. A first lead screw (10) provided for displacement movement of the guide rail is installed on the horizontal fixture (5); a product transfer plate (8) is installed on the front side elevation of the horizontal turntable (7); the vertical turntable (3) is installed at the center of the base (1) through a torsion bar (3-2) and a bearing (3-1); the horizontal turntable (7) is connected to the front elevation of the movable support (6) through a turntable bearing (7-1), fixed pins (7-3) installed on both sides of the center of the horizontal turntable in a symmetrical manner, and a torsion spring (7-2) connected to the fixed pin; a measuring ruler (1) is moved left and right. 5) are mounted on both sides of a movable counterweight (12) and are respectively slidably matched with guide rods arranged on both sides of the horizontal tooling (5); the movable counterweight (12) is mounted above the front end of the horizontal tooling (5) through a guide rail (13) and a lead screw (14); the auxiliary support (11) comprises a support beam with rollers (11-1) respectively mounted on both ends; the bottom of the support beam is mounted on the horizontal tooling (5) through left and right guide rods (11-2), and a second lead screw (11-3) for adjusting the height of the auxiliary support is mounted between the left and right guide rods (11-2).

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