CN203541983U

CN203541983U - Rotary riveter with high precision

Info

Publication number: CN203541983U
Application number: CN201320372858.1U
Authority: CN
Inventors: 朱江良; 曹强; 朱博凡
Original assignee: SHANGHAI SHENGXI PRECISION MACHINERY EQUIPMENT CO Ltd
Current assignee: SHANGHAI SHENGXI PRECISION MACHINERY EQUIPMENT CO Ltd
Priority date: 2013-06-26
Filing date: 2013-06-26
Publication date: 2014-04-16
Anticipated expiration: 2023-06-26

Abstract

The utility model provides a rotary riveter with high precision comprises an electric-hydraulic position servo system formed by a grating ruler, an electric control system and a hydraulic system, wherein the electric-hydraulic position servo system comprises a cooling and lubrication hydraulic system of a bearing pack, a hydraulic oil specific filtering mechanism and a precise oil cylinder. With an improvement of an electric control system and a hydraulic system of a preset common rotary riveter, an addition of the cooling and lubrication hydraulic system and the addition of the hydraulic oil specific filtering mechanism in the hydraulic system as well as an increase of manufacturing precision of the oil cylinder, automatic control with high precision of technological parameters during a riveting process is achieved and technical level of national rotary riveters is effectively improved.

Description

High accuracy riveter

Technical field

High accuracy riveter of the present invention, relates to a kind of riveting technical field of revolving, and is applied to machine industry.

Background technology

Along with industry is fast-developing, machine industry requires more and more high to the accuracy of manufacture of product, such as at bearing industry, some special bearings need to connect two parts by revolving riveting, high accuracy characteristic due to bearing, the common riveter of general quality is difficult to realize the technological parameter of accurate continuous control product, be difficult to meet the high-precision requirement of product, cause product can not meet drawing requirement, also easily cause product to be revolved riveting position simultaneously and occur riveted joint defect, as rivet dimensional discrepancy, after riveted joint, on part, there is crackle, on part, there is the part after cut or riveted joint loosening gapped, after even causing rotatable parts riveted joint, part rotates the dumb phenomenon that maybe can not rotate, percent defective is high, decline in benefits, production cost is high, wasted a large amount of resources, be difficult to adapt to the needs of modernization construction.

Summary of the invention

The problems referred to above in the face of prior art existence, the present invention is conceived to improve electric control system and the main hydraulic system of existing common riveter, increase cooling, the hydraulic system of lubrication of bearing group, increase hydraulic oil special filtering mechanism in main hydraulic system, improve the accuracy of manufacture of oil cylinder, realize the high accuracy riveter of the technological parameter high-precision automatic control of revolving riveting process.

The invention provides a kind of high accuracy riveter, its technical electro-hydraulic position servo system that comprises that grating scale, electric-control system and main hydraulic system form that is achieved in that; Cooling, the hydraulic system of lubrication of bearing group; Hydraulic oil special filtering mechanism; Precise Oil Cylinder is in interior structure, it is characterized in that: the electro-hydraulic position servo system that grating scale, electric-control system and main hydraulic system form is connected to each other by electric wiring, cooling, the hydraulic system of lubrication of bearing group are independent of outside main hydraulic system, and be connected with bearing group by oil pipe, hydraulic oil special filtering mechanism is installed on the fuel tank of main hydraulic system, Precise Oil Cylinder is fixed on support by screw, and is connected with main hydraulic system by oil pipe.

First, comprise PLC in high-resolution grating scale, pressure sensor, servo proportion, proportional pressure control valve, Precise Oil Cylinder, electric-control system and the electro-hydraulic position servo system of touch display screen, by technological parameter is set on touch display screen, during work, grating scale and pressure sensor feed back to electric-control system by position and pressure signal, electric control system controls servomotor rotation, and control servo proportion and proportional pressure control valve drives Precise Oil Cylinder to carry out set work.

Again, the touch display screen interface in electric-control system is reasonable, friendly, makes full use of the resource in electric-control system, has enriched the function of riveter, and operation is very convenient.

For guaranteeing that rotating shaft normally rotates, and for avoiding the hydraulic oil of the Cooling and Lubricator oil pollution main hydraulic system of bearing group, be equipped with cooling, the hydraulic system of lubrication of the bearing group that is independent of main hydraulic system again.

Again, for servo proportion and proportional pressure control valve in assurance main hydraulic system, can normally work chronically, for this reason, except having hydraulic oil filter, also be equipped with independently hydraulic oil special filtering mechanism in the loop of main hydraulic system.

Again, the significantly raising of the oil cylinder accuracy of manufacture, as long as make oil cylinder obtain hydraulic pressure signal, even if require the piston rod translational speed of oil cylinder very low (as several microns per second), the piston rod of oil cylinder also can be carried out exactly, can not produce piston rod low speed jerking motion, impact phenomenon.

Obvious advantage and the effect implemented after this technology are: owing to having improved electric control system and the main hydraulic system of existing common riveter, increase cooling, the hydraulic system of lubrication of bearing group, increased hydraulic oil special filtering mechanism in main hydraulic system, improved the accuracy of manufacture of oil cylinder simultaneously, make the technological parameter that revolves riveting process realize high-precision automatic control, effectively promoted the technical merit of domestic riveter.

Accompanying drawing explanation

Fig. 1 is electrical control cubicles and guidance panel figure;

Fig. 2 is main hydraulic system schematic diagram;

Fig. 3 is cooling, the hydraulic system of lubrication schematic diagram of bearing group;

Fig. 4 is high accuracy riveter frame for movement schematic diagram.

Wherein, 1-electric-control system; 2-touch display screen; 3-main hydraulic system; 4-pressure sensor;

5-servo proportion; 6-proportional pressure control valve; 7-hydraulic oil special filtering mechanism; Cooling, the hydraulic system of lubrication of 8-bearing group; 9-support; 10-Precise Oil Cylinder; 11-piston rod; 12-rotating shaft; 13-bearing group; 14-servomotor; 15-revolves riveting mould; 16-grating scale; 17-converted products.

The specific embodiment

With reference to Figure of description 1,2,3,4, take that to revolve riveting RAH3383a bearing products be example, and further describe with the following embodiments the present invention.

The invention provides a kind of high accuracy riveter, its technical electro-hydraulic position servo system that comprises that grating scale 16, electric-control system 1 and main hydraulic system 3 form that is achieved in that; Cooling, the hydraulic system of lubrication 8 of bearing group; Hydraulic oil special filtering mechanism 7; Precise Oil Cylinder 10 is in interior structure, it is characterized in that: the electro-hydraulic position servo system that grating scale 16, electric-control system 1 and main hydraulic system 3 form is connected to each other by electric wiring, cooling, the hydraulic system of lubrication 8 of bearing group are independent of outside main hydraulic system 3, and be connected with bearing group 13 by oil pipe, hydraulic oil special filtering mechanism 7 is installed on the fuel tank of main hydraulic system 3, Precise Oil Cylinder 10 is fixed on support 9 by screw, and is connected with main hydraulic system 3 by oil pipe.

First, comprise the electro-hydraulic position servo system that PLC in high-resolution grating scale 16, pressure sensor 4, servo proportion 5, proportional pressure control valve 6, Precise Oil Cylinder 10, electric-control system 1 and touch display screen 2 form, by on touch display screen 2, technological parameter being set, during work, grating scale 16 and pressure sensor 4 feed back to the set work of electric-control system 1 driving Precise Oil Cylinder 10 execution by position and pressure signal.

Again, touch display screen 2 interfaces in electric-control system 1 are reasonable, friendly, make full use of the resource in electric-control system 1, enriched the function of riveter, and operation is very convenient

Again, be independent of cooling, the hydraulic system of lubrication 8 of the bearing group of main hydraulic system 3, while guaranteeing rotating shaft 12 High Rotation Speed on the one hand, can there is not stuck, dry grinding phenomenon because of heating in bearing group 13, the long-term bearing accuracy keeping in bearing group 13, on the other hand, is not used the hydraulic oil in main hydraulic system 3 oily as the Cooling and Lubricator of bearing group 13, can avoid the hydraulic oil in the Cooling and Lubricator oil pollution main hydraulic system 3 of bearing group 13, affect the normal work of main hydraulic system 3.

Again, for servo proportion 5 and proportional pressure control valve 6 in assurance main hydraulic system 3, can normally work chronically,, in the loop in main hydraulic system 3, have hydraulic oil filter for this reason, also be equipped with independently hydraulic oil special filtering mechanism 7.

Again, the significantly raising of the oil cylinder accuracy of manufacture, as long as make Precise Oil Cylinder 10 obtain hydraulic pressure signal, even if require piston rod 11 translational speeds very low (as several microns per second), piston rod 11 also can be carried out exactly, can not produce piston rod 11 low speed jerking motions, impact phenomenon.

In riveter manufacture, organically combine multinomial new technology, make the technological parameter of its converted products 17 realize accurate continuous control, avoid occurring revolving riveting defect, improve the quality of products, increase economic efficiency.

Referring to Fig. 1,2, the grating scale 16 in electric-control system 1 and main hydraulic system 3 and Fig. 4 etc. form electrohydraulic servo system, first according to converted products 17 requirements, on the touch display screen 2 of electric-control system 1, by table 1, set technological parameter and preserve this parameter:

Table 1:

Referring to Fig. 3 and Fig. 4, before starting working, for preventing the bad phenomenon such as bearing in bearing group 13 generates heat, stuck, dry grinding, should first open cooling, the hydraulic system of lubrication 8 of the bearing group in Fig. 3.

Referring to Fig. 4, before starting working, converted products 17 is placed on support 9, and work surface lubricating oil spraying (high accuracy riveter carries this function).

Referring to Fig. 4, revolving riveting mould 15 is connected with piston rod 11 with piston rod 11, grating scale 16 mechanically with rotating shaft 12, rotating shaft 10, grating scale 16 will revolve the position signalling of riveting mould 15, accurately feed back to electric-control system 1, electric-control system 1 is controlled on the one hand servomotor 14 drives and is revolved the rotating speed rotation of riveting mould 15 to set, control on the other hand 5 actions of servo proportion in main hydraulic system, hydraulic oil enters Precise Oil Cylinder 10, and with the speed of setting, promotes to revolve riveting mould 15 and move down.

Equally, electric-control system 1 is when controlling servomotor 14 rotations and servo proportion 5 actions, also control ratio overflow valve 6 actions, hydraulic oil enters Precise Oil Cylinder 10, so that trying hard to recommend of setting is moving, revolves riveting mould 15 and move down, to guarantee to revolve riveting mould 15 when each different position, there is the technological requirement that suitable thrust meets converted products 15.

Referring to Fig. 4, in the course of work, grating scale 16 cursor slides are connected with piston rod 11, its effect is that the variation of revolving riveting mould 15 positions is converted to the variation of voltage and passes to electric-control system 1, after amplifier amplifies, put on servo proportion 5 and proportional pressure control valve 6 and be converted to hydraulic pressure signal, to promote the piston rod 11 in Precise Oil Cylinder 10, driving is revolved riveting mould 15 to eliminating the motion of deviation (deviation of and instruction position, control object position) direction, when deviation is zero, revolving riveting mould 15 stops mobile, thereby the position of control object is always changed by the given rule of the location of instruction.

Owing to adopting PLC, precision in grating scale 16, pressure sensor 4, servo proportion 5, proportional pressure control valve 6 and electric-control system 1, control continuously technological parameter, make high accuracy riveter can meet various technological requirements, also make electricity, hydraulic control system highly stable, adopt touch display screen 2, make operation more convenient.

Referring to Fig. 2, during work, hydraulic oil special filtering mechanism 7 follows the main hydraulic system 3 in Fig. 2 to work together all the time, meeting the hydraulic oil of servo proportion 5 and proportional pressure control valve 6 job requirements in main hydraulic system 3, offer main hydraulic system 3, guarantee main hydraulic system 3 can be chronically, stably work.

In work, Precise Oil Cylinder 10 obtains hydraulic oil, with certain speed and certain pressure, drive the set work of riveting mould 15 execution of revolving, owing to significantly improving the accuracy of manufacture of Precise Oil Cylinder 10 and piston rod 11, the requirement of working position is very high, wherein: dimensional requirement reaches micron order, roughness requires be less than or equal to Ra0.4 micron, geometrical and toleranging requires to be less than or equal to 6 class precisions, even if require piston rod 11 translational speeds very low (as several microns per second) in Precise Oil Cylinder 10, piston rod 11 in Precise Oil Cylinder 10 also can be carried out exactly, can not produce low speed jerking motion, impact phenomenon.

Referring to Fig. 4, revolve in the process that riveting mould 15 moves down on rotation limit, limit, revolving riveting mould 15 moves to while contacting with converted products 17, owing to revolving between the axis of riveting mould 15 and the axis of rotating shaft 12, there is an angle, now the riveting mould 15 that revolves of rotation is made pure rolling on converted products 17, under piston rod 11 thrust, starting truly converted products 17 to be revolved to riveter does, according to the instruction of electric-control system 1, until revolve riveting mould 15, move and arrive to set, stop moving down position time, revolving riveting mould 15 starts upwards return and stop operating, revolve when riveting mould 15 falls back on desired location and stop returning, prepare processing next time.

Referring to Fig. 4, after having worked, the product 17 with projecting apparatus, roughness instrument and bleeding agent after to processing carries out a plurality of projects such as size, roughness and crackle and tests, and assay is as table 2:

Table 2:

From the assay of table 2, can find out, the present invention is due to by organically combinations such as the PLC in grating scale 16, pressure sensor 4, servo proportion 5, proportional pressure control valve 6, Precise Oil Cylinder 10, electric-control system 1 and touch display screens 2, be combined into high accuracy riveter, make high accuracy riveter can meet the technological requirement of high-precision product.

Should be understood that above-mentioned embodiment is only for the present invention is described, and unrestricted the present invention.

Claims

1. a high accuracy riveter, it is characterized in that: the electro-hydraulic position servo system that grating scale, electric-control system and hydraulic system form is connected to each other by electric wiring, cooling, the hydraulic system of lubrication of bearing group are independent of outside hydraulic system, and be connected with bearing group by oil pipe, hydraulic oil special filtering mechanism is installed on the fuel tank of hydraulic system, Precise Oil Cylinder is fixed on support by screw, and is connected with hydraulic system by oil pipe.