CN202292094U - Compound riveting unit - Google Patents

Abstract

A composite riveting unit, one end of the indexing plate in the indexing unit bracket is matched with the indexing worm gear, and the other end of the indexing plate is connected to the cutter head, and the drilling module and the pressure riveting module are evenly distributed on the cutter head. The drilling module described includes a drill bit, a pressure cylinder, a spring, a motor bracket, a drilling motor, a guide rod, and a screw mandrel. The screw mandrel and the motor bracket form a screw nut pair, and the motor bracket is connected with a drilling motor. The guide rods are connected with the motor support, the spring sleeve, the block and the pressure cylinder in sequence from top to bottom, the pressure cylinder is connected with a drill bit, and the drill bit is connected with the drilling motor through a coupling and a transmission shaft. The utility model has the advantages that: the composite drilling and riveting unit can be used as an end effector of an automatic machine, has good interchangeability, and can be used for assembly and connection in other industries.

Description

A composite riveting unit

technical field

The utility model relates to a composite riveting unit.

Background technique

Automatic drilling and riveting technology is one of the advanced technologies of mechanical connection in the world today, which integrates machinery, electricity, hydraulic pressure, pneumatic and automatic control. The use of fully automatic drilling and riveting technology can greatly improve the anti-fatigue performance of the aircraft structure, reduce the number of operators, and prolong the life of the aircraft.

For my country's aviation manufacturing field, automatic drilling and riveting technology is still a high-tech, the domestic design capability is weak, and the investment in technology development is insufficient. The strength of technology, and it is only partially applied in assembly production, and the application area is not very extensive. The machine riveting rate of riveting structure is only 10%. Completing these tasks in the assembly of aircraft with a large number of connecting parts requires a lot of labor, especially riveting is completed by traditional hammering methods, which directly endangers the health of riveting workers. However, manual riveting is difficult to ensure a stable high-quality connection due to the limitations of workers' proficiency and physical strength, which seriously affects the assembly performance and service life of the product.

Starting from the domestic demand, start the development, research and innovation of automatic drilling and riveting technology as soon as possible, so that the automatic drilling and riveting technology is suitable for the application environment of my country's aviation manufacturing industry, and meet the further requirements of aviation enterprises for the function and performance of automatic drilling and riveting systems .

Contents of the invention

The purpose of the utility model is to provide a composite riveting unit, which is a composite drilling and riveting unit with simple structure, high efficiency, fast response, high degree of automation and wider application range.

The utility model is achieved in this way, it includes an indexing worm gear, an indexing unit bracket, an indexing disc, and a cutter head, and is characterized in that one end of the indexing disc in the indexing unit bracket is matched with the indexing worm gear and worm, and the The other end of the dial is connected to the cutter head, and the drilling module and the riveting module are evenly distributed on the cutter head. The drilling module includes a drill bit, a pressure cylinder, a spring, a motor bracket, a drilling motor, a guide rod, and a screw rod. , the screw rod and the motor bracket form a screw nut pair, the motor bracket is connected with a drilling motor, and the screw rod and the parallel guide rod are connected with the motor bracket, the spring sleeve, the stopper and the pressure cylinder in turn from top to bottom. A drill bit is connected inside the pressure cylinder, and the drill bit is connected to a drilling motor through a shaft coupling and a transmission shaft.

Drilling is the first step in the riveting operation. The drilling module mainly includes composite drills, pressure cylinders, springs, motor brackets, motors, guide rods, screw rods and other components; composite drills are different from ordinary drills in structure. It contains There are two parts, the drilling edge and the spot facing edge. At the same time, in order to prevent excessive spot facing, a limit step is set on the cutting edge. Parts need to be clamped during drilling. Therefore, in addition to drilling and countersinking, a pressing mechanism and a telescopic mechanism are also designed in the drilling module.

。 The indexing device uses a worm gear to realize the indexing movement. The drilling and riveting unit is equipped with four drilling modules and one riveting module, so the indexing angle of the indexing device is

.

The advantages of the utility model are: 1. The four processes of drilling, spot facing, nail feeding and riveting that are usually required in a riveting cycle are combined, so that the drilling and spot facing processes are completed in the same unit module, and at the same time, the The nail feeding and riveting unit modules are also combined to be completed by one mechanism module; therefore, the usual riveting process is simplified to two modules of drilling and riveting to complete the drilling and riveting work. This design concept is beneficial to reduce operating time, reduce assembly errors, save man-hours, and improve assembly efficiency; 2. The structure of the composite drilling and riveting unit after the simplification of the process is simple, and the degree of automation is high, which is conducive to reducing labor and saving production costs; 3. The compound drilling and riveting unit can be used as the end effector of automatic machinery, has good interchangeability, and can be used in assembly connections in other industries.

Description of drawings

Figure 1 is the overall structure diagram of the drilling and riveting unit.

Figure 2 is a structural diagram of the cutter head.

Figure 3 is a general view of the drilling unit.

Figure 4 is a compound drill bit.

Figure 5 is a general diagram of the riveting unit.

Figure 6 is a general diagram of the indexing device.

The label names in Fig. 1: 1-indexing worm gear, 2-indexing unit bracket, 3-indexing disc, 4-cutter disc.

The label names in Fig. 2: 5-cutter head, 6-drilling module, 7-press riveting module, 8-rivet chute.

Label name in Fig. 3: 9-drilling motor, 10-motor support, 11-spring sleeve, 12-spring, 13-guide rod, 14-pressure cylinder, 15-drill bit, 16-block, 17-screw mandrel .

Label name among Fig. 4: 18-drilling motor, 19-motor support, 20-transmission shaft, 21-coupling, 22-drill bit.

Label name among Fig. 5: No. 23-1 screw mandrel, 24-pressure riveting rod support, No. 25-2 screw mandrel, 26-rivet chute, 27-press cylinder.

Label name among Fig. 6: 28-motor, 29-motor support, 30-coupling, 31-worm screw, 32-bearing sleeve, 33-cutter cylinder, 34-worm wheel, 35-support.

Detailed ways

As shown in Figures 1, 2, 3, 4, 5, and 6, the utility model is realized in this way. One end of the indexing plate 3 in the indexing unit bracket 2 is matched with the indexing worm gear 1 and the indexing plate 3 The other end of the cutterhead 4 is connected to the cutter head 4 through the cutter head 5, and the drilling module 6 and the riveting module 7 are evenly distributed on the cutter head 4. The drilling module 6 includes a drill bit 15, a pressure cylinder 14, a spring 12, and a motor bracket 10. Drilling motor 9, guide rod 13, screw mandrel 17, screw mandrel 17 and motor bracket 10 form screw nut pair, motor bracket 10 is connected with drilling motor 9, between screw mandrel 17 and parallel guide rod 13 Connect motor bracket 10, spring sleeve 11, stop block 16 and pressing cylinder 14 sequentially from top to bottom, described pressing cylinder 14 connects drill bit 15, and drill bit 15 connects drilling motor 9 through shaft coupling 21 and transmission shaft 20.

The riveting module 7 is mainly composed of a riveting rod bracket 24, a pressing cylinder 27, a rivet chute 26 and two screw rods 23, and can be divided into a clamping mechanism, a nail feeding mechanism and a riveting mechanism; Combined with the riveting mechanism, it saves space and has a compact structure. In the riveting operation, first the screw 23 rotates under the drive of an independent feed motor, and the screw nut pair pushes the pressure cylinder to feed and clamp the parts; The rivet enters into the pressure cylinder, and slides smoothly into the rivet hole under the guidance of the pressure cylinder, and then another screw rod drives the pressure riveting rod bracket to feed, thus completing the entire pressure riveting action.

As shown in FIG. 4 , a drilling motor 18 is provided on the motor bracket 19 , and the drilling motor 18 is connected to a drill bit 22 through a transmission shaft 20 and a shaft coupling 21 .

The compound drilling and riveting unit simplifies the four processes of drilling, countersinking, nail feeding, and riveting usually required in a riveting cycle into two modules of drilling and riveting to complete the drilling and riveting work. The specific implementation process is as follows:

1. General movement description: In the work, first move the drilling and riveting unit to the riveting point with an accurate posture, and then select the required drilling unit module through the indexing plate 3, and the drill bit 15 extends from the cutter head to drill , and shrink back to the cutter head 4 after finishing the work. At this time, the indexing device rotates again at a certain angle to align the riveting unit with the rivet hole drilled just now, and the riveting unit protrudes from the cutter head 4, and shrinks back to the cutter head after completing feeding and riveting, thereby completing a riveting cycle. the

2. Drilling action: The drilling unit consists of composite drill bit 15, pressure cylinder 14, spring 12, motor bracket 10, motor 9, guide rod 13, screw rod 17 and other components. Wherein screw mandrel 17 and motor support 10 form screw mandrel nut pair. During the drilling process, the screw mandrel 17 rotates under the drive of the feed motor 9, pushes the motor bracket 10 to feed downward and compresses the spring 12, and under the restoring force of the spring, the pressing cylinder 14 moves downward along the guide rod 13. tight parts. And after the motor support 10 further compresses the spring 12, the composite drill bit 15 stretches out the pressure cylinder 14 and implements drilling and countersinking. Wherein, the composite drill bit 15 is designed as double-edged, including two parts, the drilling edge and the spot-sinking edge. Simultaneously, in order to prevent excessive spot-sinking, a limit step is set on the cutting edge. After the drilling is completed, the screw mandrel 17 reverses to drive the motor support 10 and the pressure cylinder 14 to shrink back into the cutterhead together.

3. Riveting action: The riveting unit includes a clamping mechanism, a nail feeding mechanism, and a riveting mechanism. This unit is made up of pressure riveting rod bracket 24, pressure cylinder 27, rivet chute 26, No. 1 screw rod 23 and No. 2 screw rod 25, wherein the pressure riveting rod bracket 24 and screw rod 1 form a screw nut pair, and the screw rod 2 constitutes a mobile pair, and the pressing cylinder 27 is just the opposite. In the riveting operation, first the screw 2 rotates under the drive of an independent feed motor, and the screw nut pair pushes the pressure cylinder 27 to feed and clamp the parts; The rivet entrance on the top enters the pressure cylinder, and slides smoothly into the rivet hole under the guidance of the pressure cylinder 27. At this time, the No. 1 screw mandrel 23 drives the riveting rod support 24 to feed, thereby completing the whole riveting action.

4. Indexing action: In the entire composite drilling and riveting unit, the indexing device plays the role of coordinating and connecting the actions of each unit module. It consists of: motor 28, motor bracket 29, coupling 30, worm 31, bearing sleeve Barrel 32, cutter barrel 33, worm gear 34, support 35 etc. The motion action of indexing plate is driven by motor 28 through coupling 30 and rotates worm screw 31, and worm screw 31 drives and rotates with worm wheel 34, and drives the cutter cylinder that is connected in worm wheel shaft to do indexing motion.

Claims (1)

1. compound riveted joint unit; It comprises dividing worm wheel worm screw, index unit support, index dial, cutterhead; It is characterized in that in the index unit support end of the index dial dividing worm wheel worm screw that is connected, the other end of index dial connects cutterhead, on cutterhead, is evenly distributed with the boring module and presses module; Described boring module comprises drill bit, pressure cylinder, spring, electric machine support, bore motor, guide rod, screw mandrel; Screw mandrel and electric machine support are formed feed screw nut pair, are connected with bore motor on the electric machine support, are connected electric machine support, spring spool, block and pressure cylinder from top to bottom successively between screw mandrel and the parallel guide rod; Connect drill bit in the said pressure cylinder, drill bit is connected bore motor through shaft coupling with power transmission shaft.

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