CN209157637U - A kind of adjustable torsion device for screwing up of fastener - Google Patents

A kind of adjustable torsion device for screwing up of fastener Download PDF

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Publication number
CN209157637U
CN209157637U CN201821792324.3U CN201821792324U CN209157637U CN 209157637 U CN209157637 U CN 209157637U CN 201821792324 U CN201821792324 U CN 201821792324U CN 209157637 U CN209157637 U CN 209157637U
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China
Prior art keywords
limiting device
connect
force limiting
torque force
screwing
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CN201821792324.3U
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Chinese (zh)
Inventor
梁雄伟
姚建东
庞振华
梁业
苏思杰
何壮华
郑颖
潘毅祥
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Guangxi Yuchai Machinery Co Ltd
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Guangxi Yuchai Machinery Co Ltd
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Priority to CN201821792324.3U priority Critical patent/CN209157637U/en
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Abstract

The utility model discloses a kind of fasteners, and torsion device for screwing up is adjusted, and including chassis, the cylinder being mounted on chassis, slide rail, PLC, slide rail is connect by sliding bearing with mobile bracket, and mobile bracket is connect by connecting bracket with cylinder;Mobile bracket is equipped with tightening mechanism, and tightening mechanism is connect by torque force limiting device with tightening tool;Tightening mechanism is motor or air motor, and the gas circuit of air motor connection is equipped with pressure regulator valve;Chassis lower part is equipped with location switch and tightens switch;Torque force limiting device is steel-ball type torque force limiting device, and steel-ball type torque force limiting device is equipped with microswitch, and microswitch is connect with PLC.The utility model provides that a kind of electrical control is simple, it is adjustable to tighten torsion, structure is simple, torsion device for screwing up is adjusted in high reliablity, low cost fastener.

Description

A kind of adjustable torsion device for screwing up of fastener
Technical field
The utility model relates to engine assembly fields, twist in particular to torsion is adjusted to a kind of fastener Tight device.
Background technique
The assembly work of state's intrinsic motivation is almost manually completed, artificial when tightening screw, the not only work of worker Amount is big, screwing force be also it is out of contior, product can loosen when screwing force is too small, and product is damaged when excessive, the quality of product It is not very stable.
Machining is tightened using what common single screw tightened sleeve by some producers, but is frequently not while tightening, because When assembling end cover of engine, several screws require be tighten simultaneously, and several screws to tighten force request consistent, if number The power that screw cannot be tightened or be tightened simultaneously is not of uniform size, influences properties of product.
When assembling engine and auto parts and components, the most typical, important as bolt, screw are tight in connection method Gu and torque is then the important guarantee of bolt fastening quality.Therefore some producers start to research and develop some automatic tightening fasteners Assembly equipment, to achieve the purpose that improve assembling quality, but these equipment are complicated in order to reach accurate torque structure, cost compared with Height, or using pneumatically tightening, actual screwing force is not consistent with the lashing force of design requirement.
Currently, we retrieve the open source literature of one or more fasteners automatic screwing down apparatus, such as:
1. Chinese Patent Application No. CN200820164166.7, publication date on July 29th, 2009, this application discloses one Kind screw tightening apparatus, it includes the rack (7) equipped with pneumatic element, electrical component and programmable controller, the rack (7) it is additionally provided with the fixture (5) of fixed workpiece (6) on panel, stores magazine (15), electric control box (4) and the feed of screw Device is equipped with screw sequence indicator light (3) on the electric control box (4), and connect with programmable controller conducting wire;Institute That states walks knife system equipped with pneumatic screw driver (2), and the pneumatic screw driver (2) is connect with pneumatic element, and with may be programmed The connection of controller conducting wire;The knife system of walking is connect with electrical component and programmable controller conducting wire;The electrical control Box (4) is connect with electrical component and programmable controller conducting wire.Disadvantage is that: pneumatic screw driver is compressed due to air The torsion that reason generates is not consistent, and the screwing force that will cause fastener is inconsistent, can lead to the problem of excessive or too small.
Utility model content
The utility model provides that a kind of electrical control is simple, it is adjustable to tighten torsion, structure letter in view of the above technical problems The adjustable torsion device for screwing up of fastener of list, high reliablity, low cost.
The utility model adopts the following technical solution to achieve the above object:
Torsion device for screwing up is adjusted in a kind of fastener, including chassis, the cylinder being mounted on chassis, slide rail, PLC, the slide rail are connect by sliding bearing with mobile bracket, and the mobile bracket is connected by connecting bracket and cylinder It connects;The mobile bracket is equipped with tightening mechanism, and the tightening mechanism is connect by torque force limiting device with tightening tool;The bottom Frame lower part is equipped with location switch and tightens switch.
The torque force limiting device is steel-ball type torque force limiting device, and the steel-ball type torque force limiting device is equipped with microswitch, The microswitch is connect with PLC.
The tightening mechanism is air motor, and the gas circuit of the air motor connection is equipped with pressure regulator valve.
The tightening mechanism is motor.
Working principle of the utility model is:
When work, PLC control cylinder moves downward mobile bracket, when mobile bracket encounters the location switch on chassis, PLC controls air pump starting, and driving tightening tool carries out automatic tightening operation to the fastener that engine shaft covers, to lashing force There are three aspects for control: being to reach the torsion of control air pump output, in turn by the input pressure of pressure regulation valve regulation air pump first Control the purpose of lashing force;Essence is followed by carried out to lashing force by the steel-ball type torque force limiting device between air pump and tightening tool Really control, when lashing force reaches the torsion of needs, steel-ball type torque force limiting device starts to skid, and interruption tightens fastener Power, while the microswitch being arranged on steel-ball type torque force limiting device sends signal to PLC, PLC stops the air inlet of air pump immediately, It is simultaneously emitted by signal to move up by cylinder, completes this tightening operation;Third is when mobile bracket is encountered and tightens switch, such as Microswitch of the fruit at this time on steel-ball type torque force limiting device does not issue signal, and PLC can also stop air pump rotation immediately, give simultaneously Signal is moved up by cylinder out, and preventing failure leads to the screw thread damaged on the utility model and the engine assembled Unnecessary economic loss is caused in hole.
When tightening mechanism is motor, the utility model equally may be implemented accurately to tighten torsion control: pass through first Steel-ball type torque force limiting device between motor and tightening tool accurately controls lashing force, when lashing force reaches the torsion of needs When power, steel-ball type torque force limiting device starts to skid, and interrupts the lashing force to fastener, while being arranged in steel-ball type torque force limiting device On microswitch give PLC to send signal, PLC stops motor rotation immediately, while providing signal and moving up by cylinder, completes This tightening operation;Followed by when mobile bracket, which is encountered, tightens switch, if the fine motion on steel-ball type torque force limiting device at this time Switch does not issue signal, and PLC can also stop motor immediately, while providing signal and moving up by cylinder, make lashing force will not More than too many, and then part of damage.
The utility model compared with prior art the utility model has the advantages that
1. the utility model use torque force limiting device can overload when connection immediately disengage (switch time about 2ms, When 1500 [1/min]) protect machinery equipment from damage, it is restored to operation in very short time after overload and prepares State (down time is very short), at the same also with accurate, continuous accommodation limit transmitting torque and by balls tumble from Resultant motion can get optimal switch repeatable accuracy;The torque of torque force limiting device is simply easily adjusted and readability, and turn is only needed to adjust spiral shell Mother, then torque value can will easily be disengaged by dial and torque indicator and be adjusted to setting value, therefore the utility model can It is accurate to realize that lashing force is adjusted, the lashing force for installing fastener is consistent with the value of setting.
2. there are two different modes to realize the control to lashing force when the utility model uses motor as power, using gas There are three types of different modes to realize the control to lashing force when pumping as power, not only controls accurately lashing force, especially torsion limits Device processed is mechanical connection, reach setting lashing force can Millisecond disconnect the torsion of input, reliability is very high.
3. the utility model structure is simple, low cost, later maintenance is also very easy, tightens power resources in air pump or electricity Machine, the problems such as will not generating oil leak, cause to generate pollution to the component of assembly, influence assembling quality, while controlling the master of lashing force Wanting component is torque force limiting device, and air pump and motor can use common model, not need using high-end types such as servo motors, Therefore the cost of equipment entirety is lower.
4. the utility model control is simple, PLC mainly controls the lifting of cylinder and the start-stop of air pump, does not need to lashing force It is calculated, also not needing electrical components, the investments of electrical component such as torque sensor, simulation conversion unit can also reduce.
5. the torque adjustable range for the torque force limiting device that the utility model uses is big, tightening tool can change set into as needed The tools such as cylinder, cross rise, plum blossom rises, therefore have the characteristics that wide adaptation range.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model;
Parts title and serial number in figure:
Sliding bearing 1, mobile bracket 2, location switch 3 tighten switch 4, connecting bracket 5, tightening mechanism 6, torsion limitation Device 7, tightening tool 8.
Specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but is not limited practical Novel protection scope and application range:
Embodiment 1:
As shown in Figure 1, the utility model includes chassis, the cylinder being mounted on chassis, slide rail, PLC, slide rail It is connect by sliding bearing 1 with mobile bracket 2, mobile bracket 2 is connect by connecting bracket 5 with cylinder;Mobile bracket 2 is equipped with Tightening mechanism 6, tightening mechanism 6 are connect by torque force limiting device 7 with tightening tool 8;Chassis lower part is equipped with location switch 3 and tightens Switch 4.
In the present embodiment, when work, PLC control cylinder moves downward mobile bracket 2, and mobile bracket 2 is encountered on chassis Location switch 3 when, PLC controls that air pump is pneumatic, and the fastener that driving tightening tool 8 covers engine shaft carries out automatic tightening Operation carries out the accurate control of lashing force by the torque force limiting device 7 between tightening mechanism 6 and tightening tool 8 to lashing force Control, when lashing force reaches the torsion of needs, torque force limiting device 7 starts to skid, and cuts off the lashing force to fastener, works as simultaneously Mobile bracket 2 is encountered when tightening switch 4, if torque force limiting device 7 does not skid at this time, PLC can also stop tightening mechanism immediately Power input, while providing signal and being moved up by cylinder, preventing failure causes to damage the utility model and be filled The threaded hole on engine matched, causes unnecessary economic loss.
Embodiment 2:
Difference from example 1 is that: torque force limiting device 7 is steel-ball type torque force limiting device, the limitation of steel-ball type torsion Device is equipped with microswitch, and microswitch is connect with PLC.
In the present embodiment, when steel-ball type torque force limiting device starts to skid, the lashing force to fastener is interrupted, is arranged simultaneously Microswitch on steel-ball type torque force limiting device sends signal to PLC, and PLC can stop tightening mechanism 6 immediately, provide letter Number cylinder is allowed to move up, this tightening operation is completed, simultaneously as not only torsion adjustable range is big for steel-ball type torque force limiting device It is accurate with adjusting, moreover it is possible to realize that the power of Millisecond disconnects, it is possible to realize more accurate lashing force control.
Embodiment 3:
With embodiment 1 or 2 the difference is that: tightening mechanism 6 be air motor, air motor connection gas circuit on set There is pressure regulator valve.
In the present embodiment, a kind of control mode adjusted to lashing force is increased, that is, passes through the defeated of pressure regulation valve regulation air pump Enter pressure, reach the power of control air pump output, and then adjusts the size to the lashing force of fastener.
Embodiment 4:
With embodiment 1 or 2 the difference is that: tightening mechanism 6 be motor.
In the present embodiment, motor can use common model, not need using high-end types such as servo motors, therefore set Standby whole cost is lower.
When work, lashing force is accurately controlled by the steel-ball type torque force limiting device between motor and motor first, When lashing force reaches the torsion of needs, steel-ball type torque force limiting device starts to skid, and interrupts the lashing force to fastener, sets simultaneously The microswitch set on steel-ball type torque force limiting device sends signal to PLC, and PLC stops motor rotation immediately, while providing letter Number cylinder is allowed to move up, completes this tightening operation;Followed by when mobile bracket, which is encountered, tightens switch, if steel ball at this time Microswitch on formula torque force limiting device does not issue signal, and PLC can also stop motor immediately, at the same provide signal by cylinder to Upper movement does not exceed lashing force too much, and then part of damage.

Claims (4)

1. torsion device for screwing up is adjusted in a kind of fastener, including chassis, the cylinder being mounted on chassis, slide rail, PLC, It is characterized by: the slide rail is connect by sliding bearing (1) with mobile bracket (2), the mobile bracket (2) passes through company Bracket (5) is connect to connect with cylinder;The mobile bracket (2) is equipped with tightening mechanism (6), and the tightening mechanism (6) passes through torsion Limiter (7) is connect with tightening tool (8);The chassis lower part is equipped with location switch (3) and tightens switch (4).
2. torsion device for screwing up is adjusted in fastener according to claim 1, it is characterised in that: the torque force limiting device It (7) is steel-ball type torque force limiting device, the steel-ball type torque force limiting device is equipped with microswitch, and the microswitch and PLC connect It connects.
3. torsion device for screwing up is adjusted in fastener according to claim 1 or 2, it is characterised in that: the tightening mechanism It (6) is air motor, the gas circuit of the air motor connection is equipped with pressure regulator valve.
4. torsion device for screwing up is adjusted in fastener according to claim 1 or 2, it is characterised in that: the tightening mechanism It (6) is motor.
CN201821792324.3U 2018-11-01 2018-11-01 A kind of adjustable torsion device for screwing up of fastener Active CN209157637U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821792324.3U CN209157637U (en) 2018-11-01 2018-11-01 A kind of adjustable torsion device for screwing up of fastener

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821792324.3U CN209157637U (en) 2018-11-01 2018-11-01 A kind of adjustable torsion device for screwing up of fastener

Publications (1)

Publication Number Publication Date
CN209157637U true CN209157637U (en) 2019-07-26

Family

ID=67336377

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821792324.3U Active CN209157637U (en) 2018-11-01 2018-11-01 A kind of adjustable torsion device for screwing up of fastener

Country Status (1)

Country Link
CN (1) CN209157637U (en)

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