Electrical equipment shock absorber assembling device with precise positioning function

Abstract

The utility model discloses an electrical equipment shock absorber assembling device capable of achieving accurate positioning. The electrical equipment shock absorber assembling device comprises a base bottom plate, a base supporting plate, a pressing plate, a screw, a limiting block and a positioning pin. The shock absorber is placed on the base bottom plate; the two sides of the base bottom plate are each provided with one base supporting plate, and the base bottom plate, the base supporting plates and the base supporting plates are A plurality of positioning pins are screwed on the base supporting plate; a plurality of avoiding holes are reserved in the pressing plate according to the size of the shock absorber, and the size of the holes corresponds to the size of the positioning pins on the base supporting plate. And the limiting block is screwed on the pressing plate through a screw. According to the shock absorber riveting machine, riveting work can be independently completed by a single person at a time, the production time is shortened to be within 1 hour of complete automatic riveting from original 1-2 days of external cooperation, and the production cycle of shock absorber riveting is greatly shortened; meanwhile, the functions of accurate limiting, accurate guiding, accurate positioning and rapid installation are achieved, the installation accuracy of the shock absorber can reach 0.1 mm, the yield is improved by 30% or above, and the riveting production cost of the shock absorber is greatly reduced.

Description

Technical Field

[0001] The utility model relates to a precisely positioned electrical equipment shock absorber assembly device, belonging to the field of missile and carrier rocket control. Background Art

[0002] Control system electrical products are an important part of the launch vehicle control system and are generally assembled in the launch vehicle in the form of a complete machine. In order to prevent the external load of the launch vehicle from being directly transmitted to the electrical products and causing stress damage to the products, most control system electrical products currently use shock absorbers to achieve incomplete rigid connection with the launch vehicle, thereby achieving the effect of vibration reduction and shock absorption, reducing the external stress on the control system electrical products, and improving product reliability and service life.

[0003] The installation quality and reliability of shock absorbers in control system electrical products are directly related to the actual vibration reduction effect. Traditionally, shock absorbers are installed through manual riveting without positioning or limit. With the rapid development of the aerospace industry, the requirements for processing precision, reliability, and consistency are becoming increasingly stringent. Manual hammer riveting can no longer meet the current aerospace production quality and efficiency requirements. A device with precise limiting, accurate guidance, accurate positioning, and rapid installation is needed to complete the riveting and assembly of shock absorbers. Utility Model Content

[0004] The technical problem solved by the utility model is: to overcome the shortcomings of the existing technology and propose an electrical equipment shock absorber assembly device with precise positioning, which meets the one-time clamping and positioning requirements, while ensuring the dimensional error requirements, and realizes the purposes of one-time fixing, one-time forming, consistent riveting, high efficiency and high yield.

[0005] The technical solution of the utility model is: a precisely positioned electrical equipment shock absorber assembly device, comprising: a base bottom plate, a base support plate, a pressure plate, screws, a limit block, and a positioning pin; the shock absorber is placed on the base bottom plate; a base support plate is installed on each side of the base bottom plate, and the three are formed in one piece; a plurality of positioning pins are screwed on the base support plate; the pressure plate is provided with a plurality of interference avoidance holes according to the size of the shock absorber, and the opening size of the interference avoidance holes corresponds to the size of the positioning pins on the base support plate; the limit block is screwed to the pressure plate by screws.

[0006] The flatness of the upper end surface of the base support plate is 0.1.

[0007] The parallelism between the upper end surface of the base support plate and the bottom surface of the base bottom plate is 0.1.

[0008] The height of the base support plate is designed according to the height of the vibration absorber so that the distance between the vibration absorber and the base bottom plate is not less than 1 cm.

[0009] Anti-collision rubber pads are installed on the contact surfaces of the base bottom plate and the base support plate with the shock absorber.

[0010] The perpendicularity between each positioning pin and the upper end surface of the base support plate is 0.2, and the parallelism between the positioning pins 106 is 0.05.

[0011] The size of the locating pin is overmatched with the inner hole size of the shock absorber bushing, and the surface roughness is 3.2, ensuring that the shock absorber can be placed on the upper end surface of the base support plate without interference, and the locating pin will not cause wear on the shock absorber.

[0012] The aperture of the opening on the pressure plate is larger than the diameter of the through hole of the shock absorber bushing and smaller than the diameter of the shock absorber washer.

[0013] The size of the non-screwed portion of the limit block is the lower limit of the design tolerance of the shock absorber size.

[0014] The surface roughness of the base support plate is 3.2.

[0015] The advantages of this utility model compared with the prior art are:

[0016] 1) A single person can now complete the operation independently at one time, and the riveting production time is reduced from 1 to 2 days for outsourced production to within 1 hour with the assistance of tooling for fully independent riveting. This significantly reduces the production cycle of shock absorber riveting, effectively releases the originally tight human resources, and increases riveting production efficiency several times.

[0017] 2) In traditional production processes, shock absorbers are installed through manual riveting without positioning or limiting positions, which cannot guarantee reliability and consistency. The shock absorbers installed using this utility model can achieve precise limiting, precise guidance, precise positioning, and rapid installation. The shock absorber installation accuracy can reach 0.1mm, the yield rate is increased by more than 30%, and the batch size difference is basically stable within 0.2mm, significantly reducing the shock absorber riveting production cost.

[0018] 3) The utility model replaces the operator's manual operation of holding the shock absorber with a pressure plate, avoiding the safety risks of manual operation in the production process.

[0019] 4) The anti-collision rubber pad design inside the tooling can effectively avoid the risk of damage to the product structure and appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the shock absorber structure.

[0021] Figure 2 Schematic diagram of the improved installation method for the shock absorber mounting device.

[0022] Figure 3Cross-sectional view of improved installation method for shock absorber mounting device. DETAILED DESCRIPTION

[0023] The utility model designs a set of process devices to assist in completing the riveting production of the shock absorber, thereby releasing the auxiliary human resources occupied by pure manual riveting, realizing a tooling-assisted riveting implementation plan that is completed by a single person through independent hammer riveting at one time, and at the same time improving the riveting accuracy and yield rate of the shock absorber.

[0024] The device primarily consists of a riveted base, base support plate, pressure plate, guide locating pins, and limit blocks. The locating pins enable precise positioning, the upper pressure plate provides reliable limiting, and the base provides suspended support for the equipment. The upper pressure plate is designed with multiple holes and slots to accommodate the position of shock absorbers and interference with lugs and ribs for different electrical equipment, enabling a flexible tooling design that can accommodate more than two types of electrical equipment.

[0025] The pressure plate design incorporates multiple interference avoidance openings and shock absorber mounting holes to accommodate the varying shock absorber locations and mounting lug structures of various electrical equipment. The concave-shaped tooling design accommodates the placement of various models of Electrical Equipment I and II, allowing the equipment to be suspended during shock absorber riveting, ensuring that the hammering force of the shock absorber riveting is applied only to the shock absorber. Furthermore, the pressure plate's multiple openings and holes are designed based on the shock absorber locations and mounting lug structures of various electrical equipment, thus meeting the riveting requirements of shock absorbers with varying locations and mounting lug structures.

[0026] When designing the tooling, the first thing to do is to ensure the stability of the equipment installed on the tooling, as well as the correct position and posture of the equipment during the shock absorber riveting process. Therefore, the base of the tooling is made of heavy cast iron material. This makes the base heavy, and the rigidity, strength and stability are better guaranteed. It can effectively prevent the product from jumping at the moment of hammer riveting and the up and down movement of the shock absorber assembly, ensuring the stability of the equipment and shock absorber during riveting.

[0027] In order to ensure that the shock absorber is perpendicular to the bottom surface of the product and that the shock absorbers on the same side of the product are on the same horizontal plane, a base support plate is designed. It is required to be completely perpendicular to the base, and the flatness of the upper end surface of the support plate is 0.1. The double pressure plate clamping design parallel to the base ensures the parallelism of the upper end surface and the bottom surface of the shock absorber. Placing the shock absorber on the support plate in this way can ensure the correct position of the shock absorber, and manual visual inspection is no longer required. The size of the opening in the pressure plate corresponds to the size of the locating pin on the base support plate, and the aperture is larger than the diameter of the shock absorber bushing through hole and smaller than the diameter of the shock absorber gasket; through the cooperation of the pressure plate, locating pin and limit block, the installation position of the shock absorber is accurately positioned, which improves the accuracy and consistency of the riveted installation of the shock absorber.

[0028] Because electrical equipment generally weighs 10kg to 25kg, the equipment needs to be placed inside the tooling groove before riveting the shock absorber. At this time, there is a certain risk of collision due to shaking or instability. In order to avoid damage to the exterior structure and paint surface of the electrical equipment, anti-collision rubber pads are designed and installed on the inside and bottom of the tooling groove. The area of ​​the rubber pads completely covers the three sides of the inside of the tooling groove, so that the electrical equipment can be safely and reliably placed in the tooling groove when preparing for the riveting process. Pressing the shock absorber with a pressure plate can solve the problem of special washers jumping due to impact during riveting, so that there is no need for a dedicated person to hold the shock absorber by hand during the riveting process, avoiding the safety risk of operators being injured during the riveting process.

[0029] The present invention will be described in further detail below with reference to the accompanying drawings.

[0030] like Figure 1 As shown, the shock absorber of the present invention consists of three parts: a dedicated bushing 1, a damping ring 2, and a washer 3. Bushing 1 and washer 3 are made of stainless steel, while damping ring 2 is made of rubber, which is easily damaged by strong pressure. Bushing 1 and washer 3 are riveted together to achieve the shock absorber's assembly. Damping ring 2 connects and supports the shock absorber's installation on the product chassis's lugs. The product is mounted on the equipment through the shock absorber, and when pressure is applied to the upper and lower end surfaces, the damping ring 2's inherent material properties provide a shock-absorbing effect.

[0031] like Figure 2 、 Figure 3As shown, the base bottom plate 101 and the base support plate 102 are allowed to be integrally formed. The upper end surfaces of the base support plates 102 on both sides of the base bottom plate 101 have high processing requirements, with a flatness of 0.1 and a surface roughness of 3.2, which can ensure that multiple shock absorbers are matched on the same plane on the base support plate; the upper end surface of the base support plate 102 and the bottom surface of the base bottom plate 101 have a parallelism of 0.1, which can ensure that the product remains in a horizontal position and reduce operational errors. The height of the base support plate 102 is designed according to the height of the product, so that the distance between the product and the base bottom plate is not less than 1 cm, and anti-collision pads must be installed on all the contact surfaces of the base bottom plate 101 and the base support plate 102 with the product. The locating pins 106 are screwed onto the base support plate 102. The perpendicularity of each locating pin 106 to the upper end surface of the base support plate 102 is 0.2, and the parallelism between each locating pin is 0.05. The size of the locating pin 106 is over-matched with the inner hole size of the shock absorber bushing, and the surface roughness is 3.2, which ensures that the shock absorber can be smoothly placed on the upper end surface of 102 without interference, and the locating pins will not cause wear on the shock absorber; the pressure plate 103 reserves multiple interference avoidance openings according to the product size, and the size of the openings in the base bottom plate 101 and the pressure plate 103 corresponds to the size of the locating pins on the base support plate 102, and the aperture is larger than the through-hole diameter of the shock absorber bushing 1 and smaller than the diameter of the shock absorber washer 3. The limit block 105 is screwed onto the pressure plate 103. The size of the non-screwed part of the limit block 105 is the lower limit of the design tolerance of the shock absorber size, and the batch tolerance does not exceed 0.05. The shock absorber is placed between the two base support plates 102. The positioning pin 106 is used to limit the position, the pressing plate 103 and the screw 104 are used to tighten the position, and the limit block 105 defines the tightening size, thereby realizing the limiting, guiding and positioning functions and providing operability for installation. The device has the advantages of stability, reliability, easy operation and maintenance, and high efficiency.

[0032] Although the present invention has been disclosed as above in terms of preferred embodiments, 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 technical content 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 scope of protection of the technical solution of the present invention.

Claims

1. A precise positioning device for assembling a shock absorber for electrical equipment, characterized in that: include: A base bottom plate, a base support plate, a pressure plate, screws, a limit block, and a positioning pin; the shock absorber is placed on the base bottom plate; a base support plate is installed on each side of the base bottom plate, and the three are formed in one piece; multiple positioning pins are screwed on the base support plate; the pressure plate has multiple interference avoidance holes according to the size of the shock absorber, and the opening size of the interference avoidance holes corresponds to the size of the positioning pins on the base support plate; the limit block is screwed to the pressure plate by screws.

2. The precise positioning electrical equipment shock absorber assembly device according to claim 1, characterized in that: The flatness of the upper end surface of the base support plate is 0.

1.

3. The precise positioning electrical equipment shock absorber assembly device according to claim 1, characterized in that: The parallelism between the upper end surface of the base support plate and the bottom surface of the base bottom plate is 0.

1.

4. The precise positioning electrical equipment shock absorber assembly device according to claim 1, characterized in that: The height of the base support plate is designed according to the height of the vibration absorber so that the distance between the vibration absorber and the base bottom plate is not less than 1 cm.

5. The precise positioning electrical equipment shock absorber assembly device according to claim 1, characterized in that: Anti-collision pads are installed on the contact surfaces of the base bottom plate and the base support plate with the shock absorber.

6. The precise positioning electrical equipment shock absorber assembly device according to claim 1, characterized in that: The perpendicularity between each positioning pin and the upper end surface of the base support plate is 0.2, and the parallelism between the positioning pins is 0.

05.

7. The precise positioning electrical equipment shock absorber assembly device according to claim 1, characterized in that: The size of the locating pin is overmatched with the inner hole size of the shock absorber bushing, and the surface roughness is 3.2, ensuring that the shock absorber can be placed on the upper end surface of the base support plate without interference, and the locating pin will not cause wear on the shock absorber.

8. The precise positioning electrical equipment shock absorber assembly device according to claim 1, characterized in that: The aperture of the opening on the pressure plate is larger than the diameter of the through hole of the shock absorber bushing and smaller than the diameter of the shock absorber washer.

9. The precise positioning electrical equipment shock absorber assembly device according to claim 1, characterized in that: The size of the non-screwed part of the limit block is the lower limit of the design tolerance of the shock absorber size.

10. The precise positioning electrical equipment shock absorber assembly device according to claim 1, characterized in that: The surface roughness of the base support plate is 3.2.

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