CN111571508B - Brushless motor nut riveting tool with adjustable stroke and rivet pulling force - Google Patents
Brushless motor nut riveting tool with adjustable stroke and rivet pulling force Download PDFInfo
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- CN111571508B CN111571508B CN202010456853.1A CN202010456853A CN111571508B CN 111571508 B CN111571508 B CN 111571508B CN 202010456853 A CN202010456853 A CN 202010456853A CN 111571508 B CN111571508 B CN 111571508B
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- brushless motor
- stroke
- riveting
- nut
- rivet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
- B23P19/062—Pierce nut setting machines
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Abstract
The invention discloses a brushless motor nut riveting tool with adjustable stroke and pull riveting force in multiple steps. The invention has the advantages that the stroke length and the rivet pulling force of the nut riveting tool are actively adjusted according to actual needs, the working efficiency is improved, the power supply is saved, and the service lives of the battery and the tool are prolonged.
Description
Technical Field
The invention relates to a brushless motor nut riveting tool, in particular to a brushless motor nut riveting tool with adjustable stroke and pull riveting force in multiple steps.
Background
The working stroke of the commonly used electric nut riveting tool is fixed and unchangeable, each riveting stroke is not required to be completely long in the actual riveting operation, some riveting operation strokes only need to be half of the stroke or shorter, the redundant idle stroke beyond the working stroke is consumed by adopting a mechanical adjusting mode, the excessive stroke exceeding the actual requirement can influence the working efficiency, the electric energy is wasted, and the service life of the riveting tool is shortened. In addition, the riveting force required by the riveting nuts with different specifications is greatly different, the riveting nuts with small specifications can be damaged by the excessive riveting force, and meanwhile, the electric energy is also consumed in a vacant way.
The adjustable brush motor that adopts of current electronic riveting nut instrument working stroke, the signal through the feedback carries out the comparison and judges, belongs to and adjusts passively, in order to master initiative regulation from passive regulation, this is the place that this application needs to improve.
Disclosure of Invention
The invention aims to provide a brushless motor nut riveting tool with multiple adjustable strokes and riveting forces, which can actively control and adjust working strokes.
In order to solve the technical problems, the invention provides a brushless motor nut riveting tool with adjustable stroke and riveting force in multiple gears, a function display board on a tool shell is provided with a stroke and riveting force selection button, the stroke and riveting force selection button is connected with a control processor in the shell, a stroke control module and a riveting force control module are respectively arranged in the control processor, and the stroke control module comprises the following steps:
the method comprises the following steps: the drawing screw is propped against the threaded end face of the riveting nut, the drawing screw pushes the pull rod to move towards the tail of the tool under the action force of the riveting nut, a push plate fixed on the pull rod props open the front microswitch to conduct the pull rod, and the control processor is triggered;
the method comprises the following steps: the front position Hall sensor detects whether the pulling shaft is located at an initial position; if yes, executing the next step; otherwise, turning to step-wise and-quietly;
step three: the trigger control processor enables the brushless motor to rotate forwards, the rear end shaft of the brushless motor outputs to enable the pull rod to rotate, and the drawing screw rod is driven to rotate to enable the front end of the drawing screw rod to be screwed into the threads of the riveting nut until the riveting nut abuts against the end face of the gun head;
step four: the drawing screw rod drives the pull rod to move towards the direction of the gun head under the reaction force of the gun head, the push plate releases the front microswitch to disconnect the pull rod, the rear microswitch is conducted to disconnect the pull rod, and the control processor is triggered to stop the motor from rotating;
step fifthly: detecting whether a start button acts or not, and if the start button does not act after the set time is exceeded, turning to step-and-night; if the action exists, the control processor is triggered to enable the brushless motor to rotate forwards again, the control processor converts the number of rotation turns of the brushless motor according to the selected working stroke, the pulling shaft drives the drawing screw to move towards the tail of the tool, and the pulling enables the riveting nut to be propped against the end face of the gun head to be extruded and deformed;
step sixthly: in the rivet pulling process of the step fifthly, the step a) is: the number of rotations of the brushless motor reaches a predetermined number of rotations, or b): overcurrent occurs in the rivet pulling current, or c) the rear position Hall sensor acts to control the output signal of the processor to drive the brushless motor to rotate reversely;
step-wise: the brushless motor rotates reversely to drive the drawing screw to withdraw from the riveting nut, the pulling shaft returns to the initial position, the front Hall sensor acts, and the brushless motor stops rotating.
In the step three and the positive rotation process of the brushless motor in the step fife, if the real-time battery voltage is lower than the sum of the battery voltage protection value and 1V, the step is put to the step.
And in the step-wise brushless motor reversing process, overcurrent occurs, and the control processor controls the brushless motor to stop rotating.
And in the step-wise brushless motor reversing process, the real-time battery voltage is lower than the protection value of the battery voltage, and the control processor controls the brushless motor to stop rotating.
The tail end of the pulling shaft is connected with an induction rod, an induction piece is arranged at the free vertical end of the induction rod, a position control plate is arranged below the induction rod, position Hall sensors are respectively arranged at the front end and the rear end of the position control plate, the induction rod moves along with the pulling shaft, and the front position Hall sensor and the rear position Hall sensor detect the position of the pulling shaft through the induction rod.
The front position Hall sensor is an initial position Hall sensor, the initial position Hall sensor acts, and the pulling shaft returns to the initial position.
The pull rod is placed in an inner hole of the pulling shaft and connected with the pulling screw rod, and the push plate is placed in a groove below the front and rear micro switches and connected with the pull rod through a bearing seat fixed on the pull rod.
The invention has the following advantages:
1) the invention is provided with a selection button for selecting riveting force and working stroke value in multiple gears, and a control processor receives the selected riveting force and working stroke value;
2) according to the invention, the stroke length and the rivet pulling force of the nut riveting tool are actively adjusted according to actual needs, so that the working efficiency is improved, the power supply is saved, and the service lives of the battery and the tool are prolonged.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a flow chart of the operation of the present invention;
description of the figures
1-pulling a shaft; 2-an induction rod;
3 a-front position hall sensor; 3 b-rear position Hall sensor;
4-position control panel; 5-a control processor;
6-stroke/rivet force display panel;
7 a-a travel indicator light; 7 b-rivet force indicator light;
8-stroke/rivet force selection button; 9-start button;
10-brushless motor.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 shows a schematic structural diagram of an embodiment of the present invention, and fig. 2 shows a work flow diagram of an embodiment of the present invention. As shown in fig. 1-2, the invention provides a brushless motor rivet nut tool with adjustable stroke and rivet force in multiple steps, wherein a pull shaft 1, a brushless motor 10 and a control processor 5 are arranged in a casing. The pull rod is placed in an inner hole of the pulling shaft 1 and connected with the pulling screw rod, and the push plate is placed in a groove below the front and rear micro switches and connected with the pull rod through a bearing seat fixed on the pull rod. The tail end of the pull shaft 1 is connected with an induction rod 2, an induction piece is arranged at the free vertical end of the induction rod 2, a position control plate 4 is arranged below the induction rod 2, position Hall sensors are respectively arranged at the front end and the rear end of the position control plate 4, the induction rod moves along with the pull shaft, and the front position Hall sensor 3a and the rear position Hall sensor 3b detect the position of the pull shaft 1 through the induction rod 2.
The stroke/rivet force display panel 6 and the activation button 9 are placed on the outside of the housing. The stroke/riveting force display board 6 is provided with a multi-gear stroke value indicator lamp 7a, a multi-gear riveting force value indicator lamp 7b and a stroke/riveting force selection button 8.
The multi-gear riveting force values are converted into corresponding current values and are preset in the control processor 5. The multi-gear working stroke value is converted into the corresponding number of rotation turns of the brushless motor and is preset in the control processor 5. When the working stroke needs 4mm, the brushless motor needs to rotate 100 turns, and the control processor 5 presets 100 turns.
The stroke/riveting force selection button 8 is pressed to select a required stroke value and a required riveting force value. The control processor 5 receives the input of the selected stroke value and rivet force value.
According to the electric riveting nut tool, the starting button 9 is pressed, the control processor 5 enables the brushless motor 10 to start to rotate in the forward direction, and the pulling shaft 1 moves towards the tail direction of the tool to perform riveting.
When the current value measured by the control processor 5 is larger than the current preset value of the selected riveting force, the control processor 5 switches the direction of the current supplied to the motor, the brushless motor 10 rotates in a reversing way, and the pulling shaft 1 returns. The induction rod 2 fixed on the pulling shaft 1 moves to the position near the front position Hall sensor 3a along with the pulling shaft 1, the front position Hall sensor 3a sends a signal to the control processor 5, the control processor 5 cuts off the current of the brushless motor 10, and the brushless motor 10 stops rotating.
Or when the control processor 5 makes the number of rotations of the brushless motor 10 reach the preset count value of the selected stroke, the control processor 5 switches the direction of rotation of the brushless motor 10 and pulls the shaft 1 back. The induction rod 2 fixed on the pulling shaft 1 moves to the position near the front position Hall sensor 3a along with the pulling shaft 1, the front position Hall sensor 3a sends a signal to the control processor 5, the control processor 5 cuts off the current of the brushless motor 10, and the brushless motor 10 stops rotating.
Or when the rear position hall sensor 3b receives a signal from the sensor lever 2, the control processor 5 switches the rotation direction of the brushless motor 10 and pulls the shaft 1 back. The induction rod 2 fixed on the pulling shaft 1 moves to the position near the front position Hall sensor 3a along with the pulling shaft 1, the front position Hall sensor 3a sends a signal to the control processor 5, the control processor 5 cuts off the current of the brushless motor 10, and the brushless motor 10 stops rotating.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a stroke and rivet power multi-gear adjustable brushless motor rivet nut instrument which characterized in that: the function display panel on the tool case is equipped with stroke and rivet force selection button, and stroke and rivet force selection button all are connected with the control processor in the casing, are equipped with stroke control module and rivet force control module in the control processor respectively, stroke control module includes following step:
the method comprises the following steps: the drawing screw is propped against the threaded end face of the riveting nut, the drawing screw pushes the pull rod to move towards the tail of the tool under the action force of the riveting nut, a push plate fixed on the pull rod props open the front microswitch to conduct the pull rod, and the control processor is triggered;
the method comprises the following steps: the front position Hall sensor detects whether the pulling shaft is located at an initial position; if yes, executing the next step; otherwise, turning to step-wise and-quietly;
step three: the trigger control processor enables the brushless motor to rotate forwards, the rear end shaft of the brushless motor outputs to enable the pull rod to rotate, and the drawing screw rod is driven to rotate to enable the front end of the drawing screw rod to be screwed into the threads of the riveting nut until the riveting nut abuts against the end face of the gun head;
step four: the drawing screw rod drives the pull rod to move towards the direction of the gun head under the reaction force of the gun head, the push plate releases the front microswitch to disconnect the pull rod, the rear microswitch is conducted to connect the pull rod, and the control processor is triggered to stop the brushless motor from rotating;
step fifthly: detecting whether a start button acts or not, and if the start button does not act after the set time is exceeded, turning to step-and-night; triggering the control processor to enable the brushless motor to rotate forwards again, converting the control processor into the number of rotation turns of the brushless motor according to the selected working stroke, driving the drawing screw rod to move towards the tail of the tool by the pulling shaft, and enabling the riveting nut screwed on the drawing screw rod to be propped against the end face of the gun head to be extruded and deformed by the pulling shaft;
step sixthly: in the rivet pulling process of the step fifthly, the step a) is: the number of rotations of the brushless motor reaches a predetermined number of rotations, or b): overcurrent occurs in the rivet pulling current, or c) the rear position Hall sensor acts to control the output signal of the processor to drive the brushless motor to rotate reversely;
step-wise: the brushless motor rotates reversely to drive the drawing screw to withdraw from the riveting nut, the pulling shaft returns to the initial position, the front Hall sensor acts, and the brushless motor stops rotating.
2. The stroke and rivet force multi-gear adjustable brushless motor nut riveting tool according to claim 1, characterized in that: in the step three and the positive rotation process of the brushless motor in the step fife, the real-time battery voltage is lower than the sum of the battery undervoltage protection value and 1V, and the step is put to the step.
3. The stroke and rivet force multi-gear adjustable brushless motor nut riveting tool according to claim 1, characterized in that: and in the step-wise brushless motor reversing process, overcurrent occurs, and the control processor controls the brushless motor to stop rotating.
4. The stroke and rivet force multi-gear adjustable brushless motor nut riveting tool according to claim 1, characterized in that: and in the step-wise brushless motor reversing process, the real-time battery voltage is lower than the protection value of the undervoltage of the battery, and the control processor controls the brushless motor to stop rotating.
5. The stroke and rivet force multi-gear adjustable brushless motor nut riveting tool according to claim 1, characterized in that: the tail end of the pulling shaft is connected with an induction rod, an induction piece is arranged at the free vertical end of the induction rod, a position control plate is arranged below the induction rod, position Hall sensors are respectively arranged at the front end and the rear end of the position control plate, the induction rod moves along with the pulling shaft, and the front position Hall sensor and the rear position Hall sensor detect the position of the pulling shaft through the induction rod.
6. The stroke and rivet force multi-gear adjustable brushless motor nut riveting tool of claim 5, characterized in that: the front position Hall sensor is an initial position Hall sensor, the initial position Hall sensor acts, and the pulling shaft returns to the initial position.
7. The stroke and rivet force multi-gear adjustable brushless motor nut riveting tool according to claim 1, characterized in that: the pull rod is placed in an inner hole of the pulling shaft and connected with the pulling screw rod, and the push plate is placed in a groove below the front and rear micro switches and connected with the pull rod through a bearing seat fixed on the pull rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010456853.1A CN111571508B (en) | 2020-05-26 | 2020-05-26 | Brushless motor nut riveting tool with adjustable stroke and rivet pulling force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010456853.1A CN111571508B (en) | 2020-05-26 | 2020-05-26 | Brushless motor nut riveting tool with adjustable stroke and rivet pulling force |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111571508A CN111571508A (en) | 2020-08-25 |
| CN111571508B true CN111571508B (en) | 2021-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010456853.1A Active CN111571508B (en) | 2020-05-26 | 2020-05-26 | Brushless motor nut riveting tool with adjustable stroke and rivet pulling force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111571508B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2328635A (en) * | 1997-09-01 | 1999-03-03 | Bosch Gmbh Robert | Impact screwdriver |
| CN1988984A (en) * | 2004-07-23 | 2007-06-27 | 户津胜行 | Rotary tool driven by brushless motor |
| DE102009045758A1 (en) * | 2009-10-16 | 2011-04-21 | Robert Bosch Gmbh | Hand tool e.g. drilling machine, has processing unit connected with acceleration sensor and electric motor and drive shaft and controlling rotational movement of motor and drive shaft based on acceleration signal |
| CN105082038A (en) * | 2014-05-07 | 2015-11-25 | 苏州博来喜电器有限公司 | Hand-held electric tool and automatic stopping method thereof |
| CN109048754A (en) * | 2018-10-18 | 2018-12-21 | 上海安字实业有限公司 | The electronic nut riveting tool of stroke and staking power multi-gear adjustable |
-
2020
- 2020-05-26 CN CN202010456853.1A patent/CN111571508B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2328635A (en) * | 1997-09-01 | 1999-03-03 | Bosch Gmbh Robert | Impact screwdriver |
| CN1988984A (en) * | 2004-07-23 | 2007-06-27 | 户津胜行 | Rotary tool driven by brushless motor |
| DE102009045758A1 (en) * | 2009-10-16 | 2011-04-21 | Robert Bosch Gmbh | Hand tool e.g. drilling machine, has processing unit connected with acceleration sensor and electric motor and drive shaft and controlling rotational movement of motor and drive shaft based on acceleration signal |
| CN105082038A (en) * | 2014-05-07 | 2015-11-25 | 苏州博来喜电器有限公司 | Hand-held electric tool and automatic stopping method thereof |
| CN109048754A (en) * | 2018-10-18 | 2018-12-21 | 上海安字实业有限公司 | The electronic nut riveting tool of stroke and staking power multi-gear adjustable |
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| Publication number | Publication date |
|---|---|
| CN111571508A (en) | 2020-08-25 |
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