CN209139719U - Thread rolling apparatus - Google Patents
Thread rolling apparatus Download PDFInfo
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- CN209139719U CN209139719U CN201821822661.2U CN201821822661U CN209139719U CN 209139719 U CN209139719 U CN 209139719U CN 201821822661 U CN201821822661 U CN 201821822661U CN 209139719 U CN209139719 U CN 209139719U
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- cylindrical die
- die roll
- servo
- rolled thread
- control mechanism
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Abstract
Two sets of servo-control mechanisms are at least arranged on pedestal in a kind of thread rolling apparatus, including pedestal, and each servo-control mechanism that covers circumferentially is evenly arranged, and cylindrical die roll are provided on every set servo-control mechanism, the quantity of cylindrical die roll is at least 3.The value is fed back to servo-control mechanism, then servo-control mechanism accurately controls the position of cylindrical die roll by the outer diameter value of detection shaft workpiece by the device, diameter after rolled thread can accurately be adjusted, to realize accurate rolled thread, and measurement can be monitored, can be good at promoting rolled thread quality.Relative to conventional hydraulic rolled thread mode, there is low noise, environment cleaning, control accurate, rolled thread advantageous feature with high accuracy.
Description
Technical field
The utility model relates to a kind of devices for the rolled thread on the outer diameter of axis rod workpieces, belong to rolled thread technology neck
Domain.
Background technique
The assembly of assembling camshaft is that interference is pressed cam bit on shaft, and commonly a kind of mode is the rolling of shaft outer diameter
Interference is pressed cam bit one by one after silk, and finally whole cam bits are pressed on shaft.The rolled thread mode of this method is hydraulic
Formula rolled thread is worked by hydraulic station driving hydraulic cylinder, and this hydraulic rolled thread actually has some drawbacks in use:
1. being unable to accurately control rolled thread height.Hydraulic cylinder does not have feedback mechanism in action process, can only lean on the logical of signal
Disconnected start and stop, therefore it is unable to accurately control the walking displacement of hydraulic cylinder, therefore not can guarantee rolled thread height value；
2. the noise of hydraulic station is big；
3. fluid pressure line leakage of oil influences equipment appearance and operation.
Diameter before rolled thread needs very high precision, generally in the range of central diameter, takes difference or lower difference, optionally and
It is fixed.Reserved diameter is big, will cause " too hard ", rolls motionless phenomenon.And stay small, it can will not roll, cause spiral shell
Line shape it is irregular, be unsatisfactory for requirement.
Utility model content
Deficiency existing for shaft rolled thread technology of the utility model for existing assembling camshaft provides a kind of control essence
Really, rolled thread thread rolling apparatus with high accuracy.
The thread rolling apparatus of the utility model, using following technical scheme:
Two sets of servo-control mechanisms are at least arranged on pedestal in the device, including pedestal, each to cover servo-control mechanism circumferentially
It is evenly arranged, cylindrical die roll is provided on every set servo-control mechanism, the quantity of cylindrical die roll is at least 3.
The servo-control mechanism, including line slide rail, servo motor, turn-screw, cylindrical die roll mounting base and cylindrical die roll,
Turn-screw is mounted on the base and connect with servo motor, and line slide rail is set on the base, and rolling is equipped on line slide rail
Silk wheel mounting base, cylindrical die roll mounting base are connect with turn-screw, are equipped with cylindrical die roll in cylindrical die roll mounting base.
The pedestal side is provided with outer diameter detection mechanism, for detecting the outer diameter to rolled thread workpiece, and reads or exports
Outer diameter value.
Above-mentioned apparatus further includes controller, and outer diameter detection mechanism and servo motor are connect with the controller.
The value is fed back to servo-control mechanism, then servo by the outer diameter value of detection shaft workpiece by the utility model
Control mechanism accurately controls the position of cylindrical die roll, can accurately adjust diameter after rolled thread, to realize accurate rolled thread, and energy
Enough monitoring measurements, can be good at promoting rolled thread quality.Relative to conventional hydraulic rolled thread mode, the utility model has noise
It is low, environment is clean, control is accurate, rolled thread advantageous feature with high accuracy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model thread rolling apparatus.
Fig. 2 is the top view of Fig. 1.
In figure: 1. pedestals, 2. bearing blocks, 3. servo motors, 4. line slide rails, 5. turn-screws, 6. cylindrical die roll mounting bases,
7. cylindrical die roll, 8. to rolled thread workpiece, 9. outer diameter detection mechanisms.
Specific embodiment
As shown in Figure 1, the thread rolling apparatus of the utility model passes through electricity for the outer diameter rolled thread to rolled thread workpiece (shaft) 8
Dynamic SERVO CONTROL completes rolled thread.The thread rolling apparatus includes pedestal 1, and two sets of servo-control mechanisms are at least arranged on pedestal 1, and each set is watched
Control mechanism is taken along being arranged circumferentially to rolled thread workpiece (shaft) 8, is provided with cylindrical die roll 7 on every set servo-control mechanism,
The total quantity of cylindrical die roll 7 is at least 3.If servo-control mechanism has two sets, wherein just pacifying in a set of cylindrical die roll mounting base 6
There are two cylindrical die roll 7 for dress (referring to the right side servo-control mechanism of Fig. 1).Each set servo-control mechanism can be controlled individually,
Control can be associated with.
Servo-control mechanism includes line slide rail 4, servo motor 3, turn-screw 5, cylindrical die roll mounting base 6, cylindrical die roll 7,
On.Turn-screw 5 is mounted on pedestal 1 by bearing block 2, and bearing block 2 plays fixed conveyor lead screw 5, it is ensured that transmission
Bounce precision when lead screw 5 rotates.The outer end of turn-screw 5 is connect with servo motor 3.Line slide rail 4 is arranged on pedestal 1,
Cylindrical die roll mounting base 6 is installed, line slide rail 4 has guiding role to cylindrical die roll mounting base 6, and can improve rolling on line slide rail 4
Silk wheel mounting base 6 bears the intensity of lateral force.Cylindrical die roll mounting base 6 is connect with turn-screw 5, is installed in cylindrical die roll mounting base 6
There is cylindrical die roll 7, cylindrical die roll 7 is the cutter that rolled thread is carried out to workpiece 8.
The side of pedestal 1 is provided with outer diameter detection mechanism 9, for detecting the outer diameter to rolled thread workpiece 8, and can read or
Export outer diameter value.Outer diameter detection mechanism 9 can use existing various outer diameter detecting instruments, such as laser outer diameter detecting instrument.Outer diameter inspection
Mechanism 9 is surveyed by directly measurement or relative measurement, the outer diameter value measured is able to carry out reading or is uploaded to controller.Outside
Diameter testing agency 9 and servo motor 3 are connect with the controller, which can be used programmable controller.
Servo motor 3 drives turn-screw 5 to rotate, and turn-screw 5 drives cylindrical die roll mounting base 6 straight by worm drive
It is moved back and forth on line sliding rail 4, each cylindrical die roll 7 completes rolled thread along the radial motion to rolled thread workpiece 8.Turn-screw 5 is in servo
Under the action of motor 3, rotary motion is converted into linear motion, and certain rolled thread power is provided.
The process that above-mentioned thread rolling apparatus treats 8 rolled thread of rolled thread workpiece is as described below.
(1) outer diameter of the detection of outer diameter detection mechanism 9 to rolled thread workpiece 8 is first passed through, obtains outer diameter initial value, and this is initial
Value is delivered to controller；
(2) for controller by calculating analysis, obtain cylindrical die roll 7 is actually reached position；
(3) controller control servo motor 3 drives cylindrical die roll 7 to reach rolled thread position, carries out rolled thread；
(4) after the completion of rolled thread, outer diameter detection mechanism 9 detects the outer diameter of the workpiece 8 after rolled thread, this detected value and reason
It is compared judgement by value (nominal diameter or design value), judges whether rolled thread is qualified.Within the scope of tolerance is exactly to close
Lattice, on the contrary it is unqualified.
The above process is the accurate control rolled thread precision by close-loop control mode.The detection of outer diameter detection mechanism 9 obtains outer
Diameter value feeds back to controller, is computed analysis, obtains the accurate in-position of cylindrical die roll, carries out rolled thread；After rolled thread, outer diameter detection
Mechanism 9 again detects the diameter after rolled thread.Pass through the closed loop control detected twice and immediate feedback, calculating process are formed
System, accurate control this closed loop control method of can be carried out to rolled thread position can accurately adjust diameter after rolled thread, and can
Monitoring measurement can be good at promoting rolled thread quality.
Claims (4)
1. a kind of thread rolling apparatus, characterized in that two sets of servo-control mechanisms are at least arranged including pedestal, on pedestal, respectively cover servo
Control mechanism is circumferentially evenly arranged, and is provided with cylindrical die roll on every set servo-control mechanism；The servo-control mechanism, including
Line slide rail, servo motor, turn-screw, cylindrical die roll mounting base and cylindrical die roll, turn-screw is mounted on the base and and servo
Motor connection, line slide rail are set on the base, and cylindrical die roll mounting base, cylindrical die roll mounting base and transmission are equipped on line slide rail
Lead screw connects, and is equipped with cylindrical die roll in cylindrical die roll mounting base.
2. thread rolling apparatus according to claim 1, characterized in that the pedestal side is provided with outer diameter detection mechanism.
3. thread rolling apparatus according to claim 1, characterized in that the total quantity of the cylindrical die roll is at least 3.
4. thread rolling apparatus according to claim 1,2 or 3, characterized in that further include controller, outer diameter detection mechanism and watch
Motor is taken to connect with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821822661.2U CN209139719U (en) | 2018-11-06 | 2018-11-06 | Thread rolling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821822661.2U CN209139719U (en) | 2018-11-06 | 2018-11-06 | Thread rolling apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209139719U true CN209139719U (en) | 2019-07-23 |
Family
ID=67284687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821822661.2U Active CN209139719U (en) | 2018-11-06 | 2018-11-06 | Thread rolling apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209139719U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109365701A (en) * | 2018-11-06 | 2019-02-22 | 济南易恒技术有限公司 | Rolled thread closed loop control method and device |
-
2018
- 2018-11-06 CN CN201821822661.2U patent/CN209139719U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109365701A (en) * | 2018-11-06 | 2019-02-22 | 济南易恒技术有限公司 | Rolled thread closed loop control method and device |
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