CN212420518U - Dynamic feeding device - Google Patents
Dynamic feeding device Download PDFInfo
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- CN212420518U CN212420518U CN202021215724.5U CN202021215724U CN212420518U CN 212420518 U CN212420518 U CN 212420518U CN 202021215724 U CN202021215724 U CN 202021215724U CN 212420518 U CN212420518 U CN 212420518U
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Abstract
The utility model provides a dynamic feeding device, which comprises a driving motor, a feeding moving part and a feeding moving part mounting disc, wherein the feeding moving part mounting disc is fixedly arranged at one end of a main shaft, the other end of the main shaft is fixedly provided with a driving gear ring, a gear is arranged on a rotating shaft of the driving motor, and the gear is meshed with the driving gear ring; the driving gear ring is engaged with a differential gear train, the input end of the differential gear train is connected with an adjusting servo motor, the output end of the differential gear train is engaged with an adjusting gear through an output gear, the adjusting gear is engaged with a gear screw, and the feeding motion part is arranged on the gear screw. The utility model discloses an adjustment servo motor control differential gear train and drive ring gear and adjusting gear's rotational speed cooperation makes adjusting gear produce the rotational speed difference for lathe main shaft and feed motion part mounting disc to drive gear lead screw rotates, makes feed motion part radial movement, realizes the synchronous dynamic feed of the online accurate control feed motion part of not shutting down.
Description
Technical Field
The utility model belongs to the technical field of machine tool design processing, concretely relates to dynamic feeding device for do not stop dynamic feeding.
Background
At present, the adjustment mode of a feeding motion part on a machine tool is mainly manual adjustment, the machine tool spindle 3 needs to be stopped to stop rotating, and then is manually adjusted, if the centerless lathe tool 9 is adjusted, multiple times of experiments are needed manually to meet the adjustment requirement, the labor intensity in the adjustment process is high, and the precision is difficult to guarantee. The automatic continuous production of the equipment cannot be met, the production cost is increased, and the production efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a dynamic feeding device can realize full-automatic dynamic adjustment, and the adjustment precision is high, is favorable to the automatic continuous production of equipment, saves manufacturing cost, improves production efficiency.
Therefore, the utility model provides a technical scheme as follows:
a dynamic feeding device comprises a driving motor, a feeding moving part and a feeding moving part mounting disc, wherein the feeding moving part mounting disc is fixedly arranged at one end of a main shaft, a driving gear ring is fixedly arranged at the other end of the main shaft, a rotating shaft of the driving motor is provided with a gear, and the gear is meshed with the driving gear ring;
the driving gear ring is meshed with a differential gear train, the input end of the differential gear train is connected with an adjusting servo motor, the output end of the differential gear train is meshed with an adjusting gear through an output gear, the adjusting gear is meshed with a gear lead screw, and the feeding motion part is arranged on the gear lead screw.
Differential gear train includes sun gear A, planet wheel C, foreign steamer B and planet carrier X, sun gear A is connected in adjustment servo motor's pivot, sun gear A meshing planet wheel C, foreign steamer B's internal tooth and the meshing of planet wheel C, foreign steamer B's external tooth and the meshing of drive ring gear, planet carrier X one end is connected with planet wheel C, and the other end is connected with output gear.
The adjusting gear comprises an outer gear and a face gear, the outer gear is meshed with the output gear, and the face gear is meshed with a gear of the gear lead screw.
The feeding motion part mounting disc is provided with a slide way, and the lower part of the feeding motion part is connected with the slide way in a sliding way.
The feeding motion part is a cutter, a grinding tool or a spray head.
The driving motor and the adjusting servo motor are both electrically connected with the control cabinet.
The utility model has the advantages that:
the utility model provides a dynamic feeding device, through the rotational speed cooperation of adjustment servo motor control differential gear train and drive ring gear and adjusting gear, make adjusting gear produce the rotational speed difference for lathe main shaft and feed motion part mounting disc to drive gear lead screw rotates, makes feed motion part radial movement, realizes feeding and returning of feed motion part.
The utility model discloses can realize not shutting down the synchronous dynamic feeding of online accurate control feeding motion part, be applicable to the dynamic radial feed control of all lathe main shaft upper parts (like the cutter), it is high to have degree of automation, and control accuracy is high, and rigidity is good, and advantages such as motion range is big need not artificial intervention, uses manpower sparingly the cost, improves production efficiency, realizes the high-efficient production of full automatization of equipment.
In order to make the above and other objects of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic diagram of an embodiment of the present invention.
In the figure:
description of reference numerals:
1. a drive motor; 2. a drive gear ring; 3. a main shaft; 4. a differential gear train; 5. adjusting a servo motor; 6. an output gear; 7. adjusting the gear; 8. a gear lead screw; 9. a cutter; 10. a cutter head; 11. processing a workpiece; A. a sun gear; B. an outer wheel; C. a planet wheel; x and a planet carrier.
Detailed Description
The following description is provided for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein.
In the present invention, the upper, lower, left, and right in the drawings are regarded as the upper, lower, left, and right of the dynamic feeding device described in this specification.
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, which, however, may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the invention to those skilled in the art. The terminology used in the exemplary embodiments presented in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
Example 1:
the embodiment provides a dynamic feeding device, which comprises a driving motor 1, a feeding moving part and a feeding moving part mounting disc, wherein the feeding moving part mounting disc is fixedly arranged at one end of a main shaft 3, the other end of the main shaft 3 is fixedly provided with a driving gear ring 2, a rotating shaft of the driving motor 1 is provided with a gear, and the gear is meshed with the driving gear ring 2;
the driving gear ring 2 is meshed with a differential gear train 4, the input end of the differential gear train 4 is connected with an adjusting servo motor 5, the output end of the differential gear train 4 is meshed with an adjusting gear 7 through an output gear 6, the adjusting gear 7 is meshed with a gear lead screw 8, and the feeding motion part is arranged on the gear lead screw 8.
The utility model discloses the principle:
the driving motor 1 drives the driving gear ring 2 to rotate, and the driving gear ring 2 is fixedly connected with the machine tool spindle 3 and the feeding moving part mounting disc, so that the machine tool spindle 3 rotates together with the driving gear ring 2 and the feeding moving part mounting disc. The driving gear ring 2 is simultaneously meshed with the differential gear train 4, the output gear is output through the differential gear train 4, the output gear 6 is meshed with the adjusting gear 7, and the adjusting gear 7 drives the gear screw 8. The adjusting servo motor 5 is used for driving the differential gear train 4, so that the output of the differential gear train 4 causes the adjusting gear 7 to generate a rotation speed difference relative to the machine tool spindle 3 and the feeding motion component mounting disc, thereby driving the gear screw 8 to rotate, causing the feeding motion component to move radially, and realizing the feeding and the withdrawal of the feeding motion component.
The utility model can fix the feeding motion part on the feeding motion part mounting disc and rotate with the main shaft 3 together with the feeding motion part mounting disc when the servo motor 5 is not adjusted to output; when the adjusting servo motor 5 has output, the dynamic radial adjustment can be carried out while the feeding motion part rotates along with the feeding motion part mounting disc, and the distance or the depth when the workpiece 11 is machined can be adjusted.
Example 2:
on the basis of embodiment 1, this embodiment provides a dynamic feeding device, differential gear 4 includes sun gear a, planet wheel C, outer wheel B and planet carrier X, sun gear a is connected in adjustment servo motor 5's pivot, sun gear a meshing planet wheel C, outer wheel B's internal tooth and planet wheel C meshing, outer wheel B's external tooth and the meshing of drive ring gear 2, planet carrier X one end is connected with planet wheel C, and the other end is connected with output gear 6.
The adjustment servomotor 5 is used to drive the sun gear a in the differential gear train 4. An output planet carrier X of the differential gear train 4 is fixedly connected with an output gear 6 of the differential gear train 4, the output gear 6 is meshed with an adjusting gear 7, the adjusting gear 7 is meshed with a gear lead screw 8 and can rotate on the machine tool spindle 3, the gear lead screw 8 is connected with a feeding motion part through a lead screw nut, and the feeding motion part is used for processing a machined part 11.
Example 3:
on the basis of embodiment 1 or 2, the present embodiment provides a dynamic feeding device, and the adjusting gear 7 includes an external gear and a face gear, the external gear is meshed with the output gear 6, and the face gear is meshed with a gear of the gear screw 8.
The output gear 6 is driven by the planet carrier X to rotate, and the output gear 6 is engaged with the external gear of the adjusting gear 7 again, so that the adjusting gear 7 rotates, and then the face gear of the adjusting gear 7 is engaged with the gear of the gear screw 8.
The surface of the external gear is vertical to the surface of the end face gear, and the adjusting gear 7 is sleeved on the main shaft 3. In the process that the feeding motion part mounting disc rotates along with the main shaft 3, a gear of the gear lead screw 8 is always meshed with an end face gear of the adjusting gear 7, when the driving gear ring 2 drives the feeding motion part mounting disc to rotate at the same speed as the end face gear of the adjusting gear 7, the feeding motion part mounting disc and the adjusting gear do not move relatively, and the position of the feeding motion part is fixed; after the output of the adjusting servo motor 5, the rotating speed of the mounting disc of the feeding moving part is different from the rotating speed of the end face gear of the adjusting gear 7, so that relative motion is generated, and the gear screw 8 is driven to rotate, so that the feeding moving part generates radial displacement.
Example 4:
on the basis of the embodiment 1, 2 or 3, the embodiment provides a dynamic feeding device, wherein a slide way is arranged on the feeding moving part mounting plate, and the lower part of the feeding moving part is connected with the slide way in a sliding manner.
The lower part of the feeding motion part is arranged on the feeding motion part mounting disc, the middle part of the feeding motion part is connected with a nut of the gear lead screw 8, and when the feeding motion part is radially displaced, the feeding motion part can radially move in a slide way of the feeding motion part mounting disc.
Example 5:
on the basis of embodiment 1 or 4, the present embodiment provides a dynamic feeding device, and the feeding motion part is a cutter 9, a grinding tool or a spray head.
The utility model discloses can realize not shutting down the synchronous dynamic feeding of online accurate control feeding motion part, be applicable to the dynamic radial feeding control of all lathe main shaft 3 upper parts, it is high to have degree of automation, and control accuracy is high, and rigidity is good, and advantages such as motion range is big need not artificial intervention, uses manpower sparingly cost, improves production efficiency, realizes the full automatization high-efficient production of equipment.
Example 6:
in addition to embodiment 1 or 5, the present embodiment provides a dynamic feeding device, and the dynamic feeding of the centerless lathe tool 9 is taken as an example for detailed description.
As shown in fig. 1, the centerless lathe includes a driving motor 1, a driving gear ring 2 and a machine tool spindle 3, a feed motion component mounting disc (in this embodiment, a cutter disc 10) is arranged on the machine tool spindle 3, a feed motion component (in this embodiment, a cutter 9) is arranged on the feed motion component mounting disc, and both the cutter disc 10 and the driving gear ring 2 are fixedly connected with the machine tool spindle 3.
The dynamic feeding device comprises an adjusting servo motor 5, a differential gear train 4, an output gear 6, an adjusting gear 7 and a gear lead screw 8. Differential gear 4 includes sun gear A, planet wheel C and foreign steamer B, and foreign steamer B includes internal tooth and external tooth, sun gear A meshing planet wheel C, planet wheel C meshes the internal tooth of foreign steamer B, planet wheel C connects planet carrier X, planet carrier X concreties output gear 6. As shown in fig. 1, the drive ring gear 2 meshes with a gear connected to the rotation shaft of the drive motor 1, and also meshes with external teeth of the outer wheel B of the differential gear train 4.
The working process is as follows:
the driving motor 1 drives the driving gear ring 2 to rotate, and the driving gear ring 2 is fixedly connected with the machine tool spindle 3 and the cutter head 10, so that the machine tool spindle 3 rotates together with the driving gear ring 2 and the cutter head 10. The drive ring gear 2 is simultaneously engaged with the outer wheel B of the differential gear train 4 to drive the outer wheel B to rotate. The adjustment servomotor 5 is used to drive the sun gear a in the differential gear train 4. The output planet carrier X is fixedly connected with an output gear 6, the output gear 6 is meshed with an adjusting gear 7, the adjusting gear 7 is provided with end face teeth meshed with a gear lead screw 8 and can rotate on the machine tool spindle 3, the gear lead screw 8 is connected with a cutter 9 through a lead screw nut, and the cutter 9 can move radially in a slide way of a cutter head 10 and is used for adjusting the cutting depth when a workpiece 11 is cut.
Wherein, the driving motor 1 and the adjusting servo motor 5 are both electrically connected with the control cabinet.
Example 7:
the embodiment provides a dynamic feed adjustment method, which comprises the following steps;
step 1) a driving motor 1 drives a driving gear ring 2 to rotate, the driving gear ring 2 drives a main shaft 3 and a feeding moving part mounting disc to rotate together, meanwhile, an outer wheel B of a differential gear train 4 is meshed with the driving gear ring 2 to rotate and is output to an output gear 6 through a planet carrier X, the output gear 6 is meshed with an adjusting gear 7 to rotate, an end face gear of the adjusting gear 7 is meshed with a gear lead screw 8, and the adjusting gear 7 and the feeding moving part mounting disc do not move relatively;
step 2) when the feeding motion part does not need to be adjusted, adjusting the servo motor 5 to have no output;
when the feed motion part needs to be adjusted, the adjustment servo motor 5 drives the sun gear A to rotate, the speed ratio i of the drive gear ring 2 to the adjustment gear 7 is driven to follow the rotating speed n of the sun gear AAThe rotation of the adjusting gear 7 is changed, so that a speed difference is generated between the adjusting gear 7 and the main shaft 3 and the mounting disc of the feeding motion part, the gear lead screw 8 is driven to rotate, the feeding motion part is fed and retracted on the gear lead screw 8, and the dynamic radial feeding adjustment of the feeding motion part is realized.
Example 8:
in addition to embodiment 7, the present embodiment will explain the dynamic feed adjustment method of the present invention in detail by taking the feed adjustment of the centerless lathe tool 9 as an example.
When the feed motion component (in this embodiment the tool 9) does not need to be adjusted, the adjustment servomotor 5 is without output, i.e. the sun wheel a is stationary, the differential gear train 4 is a planetary gear train C of NGW type, and when the sun wheel a is stationary, the ratio of the outer wheel B to the planet carrier X is
ZAThe number of teeth of sun gear a; zBThe number of inner teeth of the outer wheel B. The total speed ratio of the drive gear ring 2 to the adjusting gear 7 with end face teeth can be transmitted through gear tooth number matching and displacement
Wherein the content of the first and second substances,
in the formula, Z1The number of teeth of the driving ring gear 2; z2The number of outer teeth of the outer wheel B; z3The number of teeth of the output gear 6; z4For adjusting the number of external gear teeth, i, of gear 71To drive the ring gear 2 to the gear ratio of the differential gear 4, i2For internal gear ratio i of differential gear 43The transmission ratio from the differential gear train 4 to the adjusting gear 7; that is, when the adjustment servo motor 5 has no output, the drive ring gear 2 and the adjustment gear 7 with end face teeth rotate at the same speed, so that the adjustment gear 7 with end face teeth and the cutter head 10 do not move relatively, and the cutter 9 is fixed.
When the cutter 9 needs to be adjusted, the rotation speed of the servo motor 5 is adjusted to be nATo drive the sun wheel A to rotate, at the moment, the speed ratio of the differential gear train 4
nAIs the rotational speed of sun gear A; n isBThe rotating speed of the outer wheel B;
the rotating speed of the planet carrier X when the outer wheel B is not moved;
the rotating speed of the planet carrier X when the sun gear A is not moved;
the speed ratio from the outer wheel B to the planet carrier X when the sun wheel A is not moved;
for the outer wheel B not to moveThe speed ratio of the sun gear a to the planet carrier X.
From the formula, when n is obtainedAWhen the average molecular weight is 0, the average molecular weight,
thus when n isAWhen the direction is positive rotation, the rotating shaft rotates,
when n isAIn order to reverse the direction of rotation,
the speed ratio i of the drive ring gear 2 to the adjusting gear 7 with end face teeth is thus dependent on nAWhen n is changedAWhen the gear is rotating forward, i is less than 1, the rotating speed of the adjusting gear 7 with end face teeth is faster than that of the driving gear ring 2, and when n is positiveAWhen 0, i is 1, the adjusting gear 7 with end face teeth rotates at a speed equal to that of the driving ring gear 2, and when n is equal to that of the driving ring gear 2AFor a reverse rotation i > 1, the adjusting gear 7 with the end face teeth rotates slower than the driving ring gear 2. Therefore, the rotation speed of the adjusting gear 7 with the end face teeth relative to the machine tool spindle 3 and the cutter head 10 can be controlled to generate forward, reverse and zero rotation speed difference, so that the gear screw 8 is driven to rotate, and the gear screw 8 drives the cutter 9 to move through the screw nut, thereby realizing the feeding and the returning of the cutter 9. The dynamic radial feed adjustment of the cutter 9 can be realized by controlling and adjusting the rotating speed of the servo motor 5 on line and adjusting the speed difference of the adjusting gear 7 with the end face teeth relative to the machine tool spindle 3 and the cutter head 10.
When the sun gear A rotates forwards, the total speed ratio i of the driving gear ring 2 transmitted to the adjusting gear 7 is less than 1, the rotating speed of the adjusting gear 7 is greater than that of the driving gear ring 2, so that the rotating speed of the adjusting gear 7 relative to the feeding moving part mounting disc generates a forward speed difference, the driving gear screw 8 rotates, and the feeding moving part feeds on the gear screw 8.
When the sun gear A rotates reversely, the total speed ratio i of the driving gear ring 2 to the adjusting gear 7 is larger than 1, the rotating speed of the adjusting gear 7 is smaller than that of the driving gear ring 2, so that the rotating speed of the adjusting gear 7 relative to the feeding motion part mounting disc generates reverse speed difference, the driving gear lead screw 8 rotates, and the feeding motion part retreats on the gear lead screw 8.
It will be understood by those skilled in the art that the foregoing embodiments are specific examples of the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in its practical application.
Claims (6)
1. A dynamic feed device, characterized by: the feeding mechanism comprises a driving motor (1), a feeding moving part and a feeding moving part mounting disc, wherein the feeding moving part mounting disc is fixedly arranged at one end of a main shaft (3), a driving gear ring (2) is fixedly arranged at the other end of the main shaft (3), a rotating shaft of the driving motor (1) is provided with a gear, and the gear is meshed with the driving gear ring (2);
the utility model discloses a gear feed mechanism, including drive ring gear (2), differential gear train (4), the input of differential gear train (4) is connected with adjustment servo motor (5), the output of differential gear train (4) has adjusting gear (7) through output gear (6) meshing, adjusting gear (7) meshing has gear lead screw (8), the feed motion part is established on gear lead screw (8).
2. A dynamic feed device as claimed in claim 1, wherein: differential gear train (4) are including sun gear A, planet wheel C, foreign steamer B and planet carrier X, sun gear A is connected in the pivot of adjustment servo motor (5), sun gear A meshing planet wheel C, foreign steamer B's internal tooth and planet wheel C meshing, foreign steamer B's external tooth and drive ring gear (2) meshing, planet carrier X one end is connected with planet wheel C, and the other end is connected with output gear (6).
3. A dynamic feed device as claimed in claim 1, wherein: the adjusting gear (7) comprises an external gear and an end face gear, the external gear is meshed with the output gear (6), and the end face gear is meshed with a gear of the gear lead screw (8).
4. A dynamic feed device as claimed in claim 1, wherein: the feeding motion part mounting disc is provided with a slide way, and the lower part of the feeding motion part is connected with the slide way in a sliding way.
5. A dynamic feed device as claimed in claim 1, wherein: the feeding motion part is a cutter (9), a grinding tool or a spray head.
6. A dynamic feed device as claimed in claim 2, wherein: the driving motor (1) and the adjusting servo motor (5) are electrically connected with the control cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021215724.5U CN212420518U (en) | 2020-06-28 | 2020-06-28 | Dynamic feeding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021215724.5U CN212420518U (en) | 2020-06-28 | 2020-06-28 | Dynamic feeding device |
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| Publication Number | Publication Date |
|---|---|
| CN212420518U true CN212420518U (en) | 2021-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021215724.5U Active CN212420518U (en) | 2020-06-28 | 2020-06-28 | Dynamic feeding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212420518U (en) |
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2020
- 2020-06-28 CN CN202021215724.5U patent/CN212420518U/en active Active
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