CN209850445U - Drill chuck clamping device - Google Patents
Drill chuck clamping device Download PDFInfo
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- CN209850445U CN209850445U CN201920635206.XU CN201920635206U CN209850445U CN 209850445 U CN209850445 U CN 209850445U CN 201920635206 U CN201920635206 U CN 201920635206U CN 209850445 U CN209850445 U CN 209850445U
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- drill chuck
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Abstract
The utility model discloses a drill chuck clamping device. The drill chuck clamping device comprises a bottom plate, a drill chuck, a fixed sleeve, a clamping servo motor, a rotary servo motor, a first gear transmission mechanism and a second gear transmission mechanism; the drill chuck comprises a drill chuck shell, a drill chuck body and three claws, wherein the front end of a fixed sleeve is coaxially connected with the drill chuck body, the fixed sleeve is connected with an output shaft of a rotary servo motor through a second gear transmission mechanism, and the fixed sleeve is driven by the rotary servo motor to drive the drill chuck to clamp a workpiece to rotate; the drill chuck shell is connected with an output shaft of a clamping servo motor through a first gear transmission mechanism, and the clamping servo motor drives the drill chuck shell to rotate. The drill chuck clamping device is small in size, light in weight, high in working efficiency, reliable in clamping, limited in work site application, large in diameter change of the clamped workpiece within 20mm, low in clamping force requirement and capable of being used on light-weight equipment of the clamping mechanism.
Description
Technical Field
The utility model relates to a work piece processing technology field, concretely relates to drill chuck clamping device.
Background
When a longer cylindrical workpiece is cut at a fixed length continuously, the workpiece firstly penetrates through the tail part of the clamping mechanism, and after the front end of the clamping mechanism extends out for a certain length, the clamping mechanism automatically centers and performs two actions of clamping and rotating to wait for the workpiece to be cut. After cutting, the workpiece is loosened by the clamping mechanism, the workpiece is moved for a certain length from the rear end to the front end of the clamping mechanism, the clamping mechanism clamps the workpiece again and rotates, and the operation is sequentially repeated until one workpiece is cut.
Currently, the mechanisms capable of realizing automatic centering, clamping and rotating are generally adopted by a pneumatic chuck, a hydraulic chuck and an electric chuck. The power chuck does not allow long workpieces to pass through the center hole of the chuck. The use of air chucks and hydraulic chucks presents the following problems: 1. the pneumatic chuck and the hydraulic chuck need an air source and a hydraulic station, a certain working site is needed for installing the air source and the hydraulic station, and the later maintenance cost of the air source and the hydraulic station is high; 2. the three-jaw moving range of the pneumatic chuck and the hydraulic chuck is relatively small, about 5 mm-8 mm, when a workpiece with a large diameter difference is frequently cut, the clamping range of the movable clamping jaw needs to be manually adjusted, and the operation is relatively complicated; 3. the air chuck and the hydraulic chuck are heavy in weight, need a supporting mechanism with high rigidity for supporting, and have larger corresponding volume.
Therefore, the existing chuck technology is not suitable for equipment with limited work sites, the diameter of a clamped workpiece is within 20mm, the diameter of the workpiece is changed greatly, the requirement on clamping force is not high, and the clamping mechanism is expected to be light.
SUMMERY OF THE UTILITY MODEL
Therefore, the utility model aims at providing a drill chuck clamping device adopts the tight and rotatory with the clamp of rotating electrical machines and centre gripping motor control drill chuck, and the device is small, light in weight, and work efficiency is high, and the centre gripping is reliable, and it is limited to be applicable to the work place, and the centre gripping work piece diameter is within 20mm, and the work piece diameter change is great, and is not high to the clamping-force requirement to and on hope the lightweight equipment of fixture.
For realizing the purpose of the utility model, the utility model adopts the technical proposal that:
a drill chuck clamping device comprises a bottom plate, a drill chuck, a fixed sleeve, a clamping servo motor, a rotary servo motor, a first gear transmission mechanism and a second gear transmission mechanism; the drill chuck comprises a drill chuck shell, a drill chuck body and three claws, wherein the drill chuck shell is sleeved on the drill chuck body and is rotatably connected with the drill chuck body; the rotary servo motor is arranged on the bottom plate through the base, the fixed sleeve is rotatably arranged on the bottom plate through the bearing seat, the front end of the fixed sleeve is coaxially connected with the drill chuck body, the fixed sleeve is connected with an output shaft of the rotary servo motor through a second gear transmission mechanism, and the fixed sleeve is driven by the rotary servo motor to drive the drill chuck to clamp a workpiece to rotate; the clamping servo motor is arranged on the bottom plate through the base, the drill chuck shell is connected with an output shaft of the clamping servo motor through a first gear transmission mechanism, and the clamping servo motor drives the drill chuck shell to rotate.
In order to ensure that the three claws cannot be loosened when the drill chuck rotates, further, the rotation direction of the drill chuck is preferably opposite to the rotation direction of the drill chuck shell when the three claws are driven to extend under the condition that the drill chuck clamps a workpiece to rotate.
The drill chuck is in a continuous rotating state, the third gear on the drill chuck shell and the first gear are in a constantly meshed state, the shaft of the clamping servo motor is in a free rotating state, and a certain radial force can be applied to the third gear due to the dead weight of the first gear, and is consistent with the rotating direction of the drill chuck shell when the drill chuck needs to be locked, so that the continuous and reliable clamping force is ensured.
Further, the second gear transmission mechanism comprises a second gear, a second gear shaft and a fourth gear; the fourth gear is sleeved on the fixing sleeve, the second gear shaft is rotatably arranged on the bottom plate through the bearing seat, the second gear is sleeved on the second gear shaft, and the second gear and the fourth gear form a gear pair.
Further, the first gear transmission mechanism comprises a first gear, a first gear shaft and a third gear; the third gear is sleeved on the drill chuck shell, the first gear shaft is rotatably arranged on the bottom plate through the bearing seat, the first gear shaft is coaxially connected with the output shaft of the clamping servo motor, the first gear is sleeved on the first gear shaft, and the first gear and the third gear form a gear pair.
Furthermore, the first gear shaft is sleeved with a coding disc, the coding disc is provided with a plurality of radial gaps which are uniformly distributed, and the side surface of the coding disc is provided with a photoelectric switch which corresponds to the gaps.
The rotation angle of the coding disc is obtained by reading the output signal of the photoelectric switch on the side face of the coding disc, the rotation angle range of the coding disc is set, the loosening amplitude of the three claws can be controlled, and the three claws only need to be loosened a little space, so that the cylindrical workpiece can be conveniently moved. The rotation angle of the coding disc is determined by the radial gaps of the coding disc, and if 20 radial gaps are arranged, the rotation angle of each encoder rotating through one gap is 18 degrees, and the position of each gap transmits signals through the on-off electricity of the photoelectric switch.
Furthermore, the first gear shaft is connected with an output shaft of the clamping servo motor through a flexible coupling; the first gear and the third gear are both straight gears.
Further, the second gear shaft is connected with the output shaft of the rotary servo motor through a flexible coupling; the second gear and the fourth gear are both straight gears.
The utility model has the advantages that:
1. the lightweight clamping mechanism is applied to the working occasions with low requirements on the clamping force of workpieces and limited working sites, and the technical defects of the existing pneumatic chuck and hydraulic chuck in application are overcome.
2. The drill chuck clamping device replaces a pneumatic or hydraulic chuck through the electric control drill chuck, achieves automatic operation of the drill chuck, improves automation degree of equipment, and reduces labor intensity.
3. The clamping device of the drill chuck is reliable in clamping and high in working efficiency.
Drawings
FIG. 1 is a schematic structural view showing a drill chuck clamping device 1 in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view showing that when the three jaws are retracted, the drill chuck body 1 is not moved, and the drill chuck shell 2 rotates reversely (anticlockwise);
FIG. 3 is a schematic view showing that when the three jaws are extended, the drill chuck body 1 is not moved, and the drill chuck housing 2 is rotated in a forward direction (clockwise);
fig. 4 is a schematic view showing the rotation direction of the drill chuck body 1, the drill chuck housing 2 and the first gear 17 when the three-jaw clamped workpiece is rotated, wherein F represents the radial force F applied by the first gear 17 to the third gear 3, i.e. the resistance force generated by the first gear 17 to the drill chuck housing.
Description of reference numerals:
01 three claws; 1, a drill chuck body; 2, a drill chuck shell; 3 a third gear; 4, fixing a sleeve; 5 a second gear; 6 a fourth gear; 7 rotating the motor base; 8 rotating the servo motor; 9 a cylindrical workpiece; 10 clamping the servo motor; 11 clamping the motor base; 12 a flexible coupling; 13 a first gear shaft; 14, coding a disc; 15 a photoelectric switch; 16 bearing seats; 17 a first gear; 18 second gear shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and a preferred embodiment.
In the following description, the left side of the drill chuck is shown as "front" and vice versa with reference to the orientation of the drill chuck as shown in figure 1.
Embodiment mode 1
Referring to fig. 1, the drill chuck clamping device includes a bottom plate (not shown), a drill chuck, a fixing sleeve 4, a clamping servo motor 10, a rotary servo motor 8, a first gear transmission mechanism and a second gear transmission mechanism. The second gear transmission mechanism comprises a second gear 5, a second gear shaft 18 and a fourth gear 6. The first gear transmission mechanism includes a first gear 17, a first gear shaft 13, and a third gear 3.
The drill chuck used in the application is the prior art and can be purchased and obtained from the market. The drill chuck is one of the main accessories in the electric tool industry and the machine tool industry, and is widely applied to electric hand drills and drilling machines. The drill chuck mainly comprises a drill chuck shell 2, a drill chuck body 1 and three claws 01. The drill chuck shell 2 is sleeved on the drill chuck body 1 and is rotatably connected with the drill chuck body 1, the three claws 01 are arranged in a sliding groove of the drill chuck body 1, the tail parts of the three claws are in spiral transmission connection with the drill chuck shell 2, the three claws are driven to extend out of the drill chuck body to clamp a workpiece when the drill chuck shell rotates forwards, and the three claws are driven to retract to loosen the workpiece when the drill chuck shell rotates reversely. In this embodiment, the drill chuck housing 2 is sleeved with a third gear 3. The third gear 3 is connected with the drill chuck shell 2 in an interference fit mode and is positioned through a key.
In this embodiment, the fixing sleeve 4 is a hollow circular tube with a certain length, the hollow circular tube is rotatably mounted on the bottom plate through two bearing seats 16, the front end of the hollow circular tube is connected with the rear end of the drill chuck body 1 through a screw, and the center line of the hollow circular tube coincides with the center line of the drill chuck body 1. The hollow circular tube is sleeved with a fourth gear 6, and the fourth gear 6 is positioned between the two bearing seats. The fourth gear 6 is connected with the fixed sleeve 4 in an interference fit manner and is positioned by a key.
The rotary servo motor 8 is arranged on the bottom plate through a base 7, and an output shaft of the rotary servo motor is parallel to the fixed sleeve 4. The second gear shaft 18 is rotatably installed on the bottom plate through two bearing seats 16, the second gear shaft 18 is connected with an output shaft of the clamping servo motor through a flexible coupling 12, the second gear 5 is sleeved on the second gear shaft 18, and the second gear 5 and the fourth gear 6 form a gear pair. The second gear 5 is connected with the second gear shaft 18 in an interference fit mode and is positioned through a key.
The clamping servo motor 10 is arranged on the bottom plate through a base 11 and is respectively positioned at two sides of the drill chuck together with the rotary servo motor 8, and an output shaft of the clamping servo motor is parallel to the fixed sleeve 4. The first gear shaft 13 is rotatably mounted on the base plate through two bearing blocks 16, and the first gear shaft 13 is connected with an output shaft of the clamping servo motor through a flexible coupling 12. One end of the first gear shaft 13 is sleeved with the first gear 17, and the other end thereof is sleeved with the code disc 14. The first gear 17 is connected with the first gear shaft 13 in an interference fit manner and is positioned by a key. The first gear 17 and the third gear 3 form a gear pair.
The code wheel 14 is disc-shaped and has a plurality of radial notches uniformly distributed in the outer edge thereof. In this embodiment, the diameter of the homemade code disc is 100mm, and 20U-shaped notch grooves are uniformly distributed on the outer circle.
The photoelectric switch 15 is arranged on the side surface of the coding disc 14 through a bracket and corresponds to the U-shaped notch groove of the coding disc. Photoelectric switches are prior art and are commercially available. In the embodiment, an EE-SX670A NPN model is selected.
In this embodiment, the drill chuck is a wrench type, and the clamping range is 3 mm-16 mm. The bearings in the bearing block 16 are deep groove ball bearings. The first gear 17, the second gear 5, the third gear 3 and the fourth gear 6 are all straight gears with the modulus of 1 and the diameter of 90 mm. The clamping servo motor 10 adopts a 400W step servo motor, and the type number is as follows: ECMA-C10604 RS; the rotary servo motor 8 adopts a 750W step servo motor, and the type number is as follows: ECMA-C10807 RS.
Referring to fig. 1 to 4, a method for clamping a workpiece by a drill chuck according to the present invention is described by taking the drill chuck clamping device of embodiment 1 as an example as follows:
s1, respectively connecting the servo drivers of the clamping servo motor 10 and the rotary servo motor 8 and the photoelectric switch 15 with a controller, and enabling the workpiece 9 to pass through the fixed sleeve 4 and the drill chuck body 1; the controller counts the code disc by accumulating the times of high and low level signals transmitted by the photoelectric switch 15, so as to identify the rotation angle of the code disc; in this embodiment, Mitsubishi FX3GA-40MT is used as the controller.
S2, the controller firstly controls the power supply of the rotary servo motor 8 to be switched on and in a self-locking state, and the drill chuck body 1 is fixed at a certain angle; the clamping servo motor 10 is started, the clamping servo motor 10 drives the first gear 17 to rotate, the first gear 17 is in meshed transmission with the third gear 3, and the third gear 3 drives the drill chuck shell 2 to rotate clockwise, namely to rotate forwards, as shown in fig. 3; the three claws 01 extend out of the drill chuck body 1 to clamp a workpiece 6; in this embodiment, the holding workpiece 6 is a round bar having a diameter of 6mm and a length of 3 m.
S3, when the three-jaw clamps the workpiece 9, the rotating speed of the clamping servo motor 10 tends to 0, the servo driver of the clamping servo motor sends a low-speed signal to the controller, and when the controller receives the low-speed signal, the clamping servo motor 10 is controlled to stop rotating and the power supply is controlled to be disconnected, and the motor outputs 0 torque;
s4, the controller controls the rotary servo motor 8 to drive the second gear 5 to rotate, the second gear 5 is in meshing transmission with the fourth gear 6, the fourth gear 6 drives the fixing sleeve 4 to rotate, the fixing sleeve 4 drives the drill chuck body 1 and the drill chuck shell 2 to clamp the workpiece 9 to rotate anticlockwise, and the workpiece 9 enters a cutting process; referring to fig. 3 and 4, at this time, the rotation direction of the drill chuck body 1 is opposite to the rotation direction of the drill chuck shell 2 when the three claws extend out, and the radial force F applied to the third gear 3 by the first gear 17 is consistent with the rotation direction of the drill chuck shell 2 when the three claws extend out, so that the continuity and reliability of the clamping force are ensured;
s5, when the workpiece 9 is cut, the controller controls the rotary servo motor 8 to stop rotating and is in a self-locking state, and the controller clears the count value of the coding disc; the clamping servo motor 10 is powered on and rotates, and the drill chuck shell 2 is driven to rotate anticlockwise through the first gear transmission mechanism, namely rotate reversely, as shown in fig. 2; the controller starts to count the code disc 14, the three claws 01 retract to release the clamped workpiece 9, when the count accumulated by the controller on the code disc 14 reaches 20, the drill chuck shell 2 is indicated to rotate for one circle, the three claws 01 are completely released, and the program controller controls the clamping servo motor 10 to stop rotating.
Parts which are not specifically described in the above description are prior art or can be realized by the prior art.
Claims (7)
1. A drill chuck clamping device is characterized by comprising a bottom plate, a drill chuck, a fixed sleeve, a clamping servo motor, a rotary servo motor, a first gear transmission mechanism and a second gear transmission mechanism; the drill chuck comprises a drill chuck shell, a drill chuck body and three claws, wherein the drill chuck shell is sleeved on the drill chuck body and is rotatably connected with the drill chuck body; the rotary servo motor is arranged on the bottom plate through the base, the fixed sleeve is rotatably arranged on the bottom plate through the bearing seat, the front end of the fixed sleeve is coaxially connected with the drill chuck body, the fixed sleeve is connected with an output shaft of the rotary servo motor through a second gear transmission mechanism, and the fixed sleeve is driven by the rotary servo motor to drive the drill chuck to clamp a workpiece to rotate; the clamping servo motor is arranged on the bottom plate through the base, the drill chuck shell is connected with an output shaft of the clamping servo motor through a first gear transmission mechanism, and the clamping servo motor drives the drill chuck shell to rotate.
2. The drill chuck holding device as claimed in claim 1, wherein the drill chuck is rotated in a direction opposite to the direction of rotation of the drill chuck housing when the three jaws are driven to extend in a state where the drill chuck holds the workpiece in rotation.
3. The drill chuck holding device according to claim 1 or 2, wherein the second gear transmission mechanism comprises a second gear, a second gear shaft and a fourth gear; the fourth gear is sleeved on the fixing sleeve, the second gear shaft is rotatably arranged on the bottom plate through the bearing seat, the second gear is sleeved on the second gear shaft, and the second gear and the fourth gear form a gear pair.
4. The drill chuck holding device of claim 1 or 2, wherein the first gear transmission mechanism comprises a first gear, a first gear shaft and a third gear; the third gear is sleeved on the drill chuck shell, the first gear shaft is rotatably arranged on the bottom plate through the bearing seat, the first gear shaft is coaxially connected with the output shaft of the clamping servo motor, the first gear is sleeved on the first gear shaft, and the first gear and the third gear form a gear pair.
5. The clamping device of the drill chuck as claimed in claim 4, wherein the first gear shaft is sleeved with a coding disc, the coding disc is provided with a plurality of radial notches which are uniformly distributed, and the side surface of the coding disc is provided with a photoelectric switch which corresponds to the notches.
6. The drill chuck clamping device as claimed in claim 4, wherein the first gear shaft is connected with the output shaft of the clamping servo motor through a flexible coupling; the first gear and the third gear are both straight gears.
7. The drill chuck holding device as claimed in claim 3, wherein the second gear shaft is connected to the output shaft of the rotary servo motor through a flexible coupling; the second gear and the fourth gear are both straight gears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920635206.XU CN209850445U (en) | 2019-05-06 | 2019-05-06 | Drill chuck clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920635206.XU CN209850445U (en) | 2019-05-06 | 2019-05-06 | Drill chuck clamping device |
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| Publication Number | Publication Date |
|---|---|
| CN209850445U true CN209850445U (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920635206.XU Active CN209850445U (en) | 2019-05-06 | 2019-05-06 | Drill chuck clamping device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110227958A (en) * | 2019-05-06 | 2019-09-13 | 南京春辉科技实业有限公司 | Drill chuck clamping device and method |
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2019
- 2019-05-06 CN CN201920635206.XU patent/CN209850445U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110227958A (en) * | 2019-05-06 | 2019-09-13 | 南京春辉科技实业有限公司 | Drill chuck clamping device and method |
| CN110227958B (en) * | 2019-05-06 | 2024-04-26 | 南京春辉科技实业有限公司 | Drill chuck clamping device and method |
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