Three-degree-of-freedom vibration tool for linear steering engine

Abstract

The invention relates to a three-degree-of-freedom vibration tool for a linear steering engine. The three-degree-of-freedom vibration tool comprises a bottom plate, a front supporting lug base, a first pin shaft, a first nut, a rocker arm, a second pin shaft, a second nut, a cross-shaped supporting lug assembly, a rear supporting lug base, a positioning pin, a third nut and a third pin shaft. The front support lug base is fixed on the bottom plate, and the rocker arm is connected with the front support lug base through a first pin shaft and a first nut and is connected with a front support lug of the linear steering engine through a second pin shaft and a second nut; a rear support lug base is fixed on the bottom plate, and a cross support lug assembly is fixed on the rear support lug base through a positioning pin and a third nut and is connected with a rear support lug of the linear steering engine through a third pin shaft; when vibration needs to be reversed, the positioning pin and the third nut are loosened, the cross-shaped supporting lug assembly is vertically rotated, after reversing, the positioning pin and the third nut are fastened, and switching between horizontal XY-direction vibration and vertical Z-direction vibration of the steering engine is achieved. The tool is simple in reversing operation, improves the working efficiency, is low in manufacturing cost, and is suitable for linear steering engines with different strokes.

Description

Technical Field

[0001] The invention belongs to the technical field of linear servo vibration tooling, and relates to a three-degree-of-freedom vibration tooling for a linear servo. Background Art

[0002] The vibration fixture is one of the essential process equipment for vibration testing, which is mainly used to ensure that the movement and energy of the vibration table are transmitted to the test piece. For the servo without joint bearings on the front and rear lugs, when the servo rear lug center hole axis is installed vertically on the vibration fixture, the existing vibration fixture cannot meet the linear output motion of the servo; the existing vibration fixture has the problem of single applicability.

[0003] Chinese patent CN218885354U discloses an XYZ three-axis vibration test bench, which realizes XYZ three-axis vibration by combining a dual-axis vibration platform and an L-shaped vibration tooling. However, the vibration tooling needs to be disassembled to change the vibration direction, and the intermediate operation is time-consuming.

[0004] Chinese patent CN210923011U discloses a three-axis vibration tooling, which uses three mounting plates to be inserted and pulled together, and the three mounting plates are locked by a locking plate. However, this structure is only suitable for special products and is not universal. Summary of the invention

[0005] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to propose a three-degree-of-freedom vibration tooling for a linear servo, and to solve the problem that the prior vibration tooling cannot be used for front and rear lug bearingless servos and has a single applicability.

[0006] The solution to the technical problem of the present invention is: a three-degree-of-freedom vibration tooling for a linear servo, comprising a bottom plate, a front lug base, a first pin shaft, a first nut, a rocker arm, a second pin shaft, a second nut, a cross lug assembly, a rear lug base, a positioning pin, a third nut and a third pin shaft;

[0007] The front support ear base is fixed on the bottom plate, the rocker arm is connected to the front support ear base through the first pin shaft and the first nut, and is connected to the front support ear of the linear servo through the second pin shaft and the second nut; the rear support ear base is fixed on the bottom plate, the cross support ear assembly is fixed to the rear support ear base through the positioning pin and the third nut, and is connected to the rear support ear of the linear servo through the third pin shaft;

[0008] When the vibration needs to be reversed, loosen the positioning pin and the third nut, rotate the cross support ear assembly vertically, and after reversing, tighten the positioning pin and the third nut to achieve the switching of the horizontal XY vibration and the vertical Z vibration of the servo.

[0009] Furthermore, the linear servo does not need to be removed when the cross lug assembly is rotated for reversing.

[0010] Furthermore, the cross ear assembly includes a cross joint, a joint flange, an assembly connecting seat, and an assembly connecting shaft; the cross joint is connected to the front end of the joint flange, and the rear end of the joint flange is movably connected to the assembly connecting seat by bolts, and the reversal of the joint flange on the assembly connecting seat is achieved by disassembling and assembling the bolts; the assembly connecting seat and the assembly connecting shaft are processed as one piece, and the connecting shaft is provided with a through hole along the radial direction for installing a locating pin.

[0011] Furthermore, a third nut is mounted on the connecting shaft and is used to fix the cross lug assembly on the rear lug base.

[0012] Furthermore, the third pin is inserted into the cross joint along the axial direction.

[0013] Furthermore, the front support ear base is fixed to the base plate by bolts. Two slide grooves are provided on the front support ear base, corresponding to linear servos with different strokes. By loosening the fixing bolts of the front support ear base, the linear position of the front support ear base is steplessly adjusted to reach the required position, and the fixing bolts of the front support ear base are tightened.

[0014] Further, the rear support ear base is fixed to the bottom plate by bolts.

[0015] Furthermore, the rocker arm is a Y-shaped structure, with the upper end connected to the second pin and the second nut, and the lower end connected to the first pin and the first nut.

[0016] The beneficial effects of the present invention compared with the prior art are:

[0017] (1) The present invention proposes a cross-lug type vibration fixture, which can realize the three-axial vibration of the linear servo and the three-degree-of-freedom movement of the product in the vibration test without removing the product, and the reversing operation is simple, shortening the fixture reversing time, improving work efficiency, and low manufacturing cost;

[0018] (2) During the vibration operation of the present invention, a slide groove is provided at the front support ear base, which can be adjusted steplessly and is suitable for linear servos with different strokes, thus having good versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of a vibration tooling according to an embodiment of the present invention (the cross lug assembly installation axis is in the vertical direction);

[0020] Figure 2 This is a schematic diagram of a vibration tooling according to an embodiment of the present invention (the installation axis of the cross lug assembly is in the horizontal direction);

[0021] Figure 3 The diagram is a schematic diagram of a vibration fixture equipped with a linear servo (the cross lug assembly installation axis is vertical);

[0022] Figure 4 The schematic diagram of the vibration fixture equipped with a linear servo (the installation axis of the cross lug assembly is horizontal);

[0023] FIG5( a ) is a schematic diagram of the connection position of the rear support ear locating pin and the locking nut;

[0024] Figure 5(b) is a schematic diagram of the slide groove structure of the front support ear base;

[0025] FIG5( c ) is a schematic diagram of a cross lug assembly. DETAILED DESCRIPTION

[0026] The present invention can realize the three-axis vibration and the front, middle and rear three-degree-of-freedom motion of the linear servo through the cross lug assembly; the cross lug assembly is vertically replaced by plugging and pulling out the positioning pin to realize the simple operation of reversing the vibration direction; and the vibration test of linear servo products with different strokes is realized by sliding the front lug base.

[0027] The present invention will be further described below in conjunction with the embodiments.

[0028] Example 1

[0029] In this embodiment, a three-degree-of-freedom vibration tooling for a linear servo is provided. Figure 1 , Figure 2 As shown, it includes a base plate 1, a front support ear base 2, a first pin shaft 3, a first nut 4, a rocker arm 5, a second pin shaft 6, a second nut 7, a cross support ear assembly 8, a rear support ear base 9, a positioning pin 10, a third nut 11 and a third pin shaft 12.

[0030] The front lug base 2 is fixed to the bottom plate 1 by bolts, the rocker arm 5 is connected to the front lug base 2 by a first pin shaft 3 and a first nut 4, and is connected to the front lug of the linear servo by a second pin shaft 6 and a second nut 7; the rear lug base 9 is fixed to the bottom plate 1 by bolts, the cross lug assembly 8 is fixed to the rear lug base 9 by a locating pin 10 and a third nut 11, and is connected to the rear lug of the linear servo by a third pin shaft 12;

[0031] When the vibration needs to be reversed, loosen the positioning pin 10 and the third nut 11, and rotate the cross lug assembly 8 vertically without removing the linear servo. After the reversal, tighten the positioning pin 10 and the third nut 11 to switch the horizontal XY vibration of the servo and the vertical Z vibration. Figure 3 , Figure 4 shown.

[0032] As shown in FIG5(c), the cross lug assembly 8 includes a cross joint 81, a joint flange 82, an assembly connection seat 83, and an assembly connection shaft 84; the cross joint 81 is connected to the front end of the joint flange 82, and the rear end of the joint flange 82 is movably connected to the assembly connection seat 83 by bolts, and the reversal of the joint flange 82 on the assembly connection seat 83 is achieved by disassembling and assembling the bolts; the assembly connection seat 83 and the assembly connection shaft 84 are integrally processed, and the assembly connection shaft 84 is provided with a through hole in the radial direction for installing the positioning pin 10. The third nut 11 is installed on the assembly connection shaft 84, and is used to fix the cross lug assembly 8 on the rear lug base 9; as shown in FIG5(a).

[0033] like Figure 1 As shown, the rocker arm 5 is a Y-shaped structure, with the upper end connected to the second pin shaft 6 and the second nut 7, and the lower end connected to the first pin shaft 3 and the first nut 4.

[0034] As shown in FIG5(b), two slide grooves are provided on the front support ear base 2, corresponding to linear servos with different strokes. By loosening the fixing bolts of the front support ear base 2, the linear position of the front support ear base 2 is steplessly adjusted to reach the required position, and the fixing bolts of the front support ear base 2 are tightened.

[0035] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

[0036] The contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A three-degree-of-freedom vibration tooling for a linear servo, characterized in that: It comprises a bottom plate (1), a front support ear base (2), a first pin shaft (3), a first nut (4), a rocker arm (5), a second pin shaft (6), a second nut (7), a cross support ear assembly (8), a rear support ear base (9), a positioning pin (10), a third nut (11) and a third pin shaft (12); The front support ear base (2) is fixed on the bottom plate (1); the rocker arm (5) is connected to the front support ear base (2) through a first pin shaft (3) and a first nut (4), and is connected to the front support ear of the linear servo motor through a second pin shaft (6) and a second nut (7); the rear support ear base (9) is fixed on the bottom plate (1); the cross support ear assembly (8) is fixed to the rear support ear base (9) through a positioning pin (10) and a third nut (11), and is connected to the rear support ear of the linear servo motor through a third pin shaft (12); When the vibration needs to be reversed, the positioning pin (10) and the third nut (11) are loosened, and the cross support ear assembly (8) is vertically rotated. After the reversal, the positioning pin (10) and the third nut (11) are tightened to realize the switching between the horizontal XY vibration and the vertical Z vibration of the steering gear.

2. A three-degree-of-freedom vibration tooling for a linear servo according to claim 1, characterized in that: The linear actuator does not need to be removed when the cross lug assembly (8) is turned to change direction.

3. A three-degree-of-freedom vibration tooling for a linear servo according to claim 1, characterized in that: The cross support lug assembly (8) comprises a cross joint (81), a joint flange (82), an assembly connection seat (83), and an assembly connection shaft (84); the cross joint (81) is connected to the front end of the joint flange (82), the rear end of the joint flange (82) is movably connected to the assembly connection seat (83) by bolts, and the joint flange (82) is reversible on the assembly connection seat (83) by disassembling and assembling the bolts; the assembly connection seat (83) and the assembly connection shaft (84) are integrally processed, and the connection shaft (84) is provided with a through hole along the radial direction for mounting a positioning pin (10).

4. A three-degree-of-freedom vibration tooling for a linear servo according to claim 3, characterized in that: The third nut (11) is mounted on the connecting shaft (84) and is used to fix the cross support lug assembly (8) on the rear support lug base (9).

5. The three-degree-of-freedom vibration tooling for a linear servo according to claim 3, characterized in that: The third pin shaft (12) is inserted into the cross joint (81) along the axial direction.

6. A three-degree-of-freedom vibration tooling for a linear servo according to claim 3, characterized in that: The front support ear base (2) is fixed to the bottom plate (1) by bolts. Two slide grooves are arranged on the front support ear base (2) corresponding to linear servos with different strokes. By loosening the fixing bolts of the front support ear base (2), the linear position of the front support ear base (2) is steplessly adjusted to reach a required position, and the fixing bolts of the front support ear base (2) are tightened.

7. The three-degree-of-freedom vibration tooling for a linear servo according to claim 1, characterized in that: The rear support ear base (9) is fixed on the bottom plate (1) by means of bolts.

8. The three-degree-of-freedom vibration tooling for a linear servo according to claim 1, characterized in that: The rocker arm (5) is a Y-shaped structure, with an upper end connected to the second pin shaft (6) and the second nut (7), and a lower end connected to the first pin shaft (3) and the first nut (4).

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