CN112974884A - Electric main shaft flange structure - Google Patents
Electric main shaft flange structure Download PDFInfo
- Publication number
- CN112974884A CN112974884A CN202110202882.XA CN202110202882A CN112974884A CN 112974884 A CN112974884 A CN 112974884A CN 202110202882 A CN202110202882 A CN 202110202882A CN 112974884 A CN112974884 A CN 112974884A
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- sleeve
- ring sleeve
- tensioning
- electric spindle
- main shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/40—Expansion mandrels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Abstract
The invention provides an electric main shaft flange structure which comprises an upper ring sleeve, a lower ring sleeve and a tensioning sleeve which are coaxially arranged; the upper ring sleeve and the lower ring sleeve are sequentially arranged from top to bottom, and the electric main shaft is arranged in the upper ring sleeve and the lower ring sleeve; the upper part of the tensioning sleeve is arranged between the upper ring sleeve and the electric main shaft, the lower part of the tensioning sleeve is arranged between the lower ring sleeve and the electric main shaft, and the upper part and the lower part of the tensioning sleeve are both provided with a certain taper, so that the tensioning sleeve forms a circle of convex parts; the tensioning sleeve is provided with a plurality of first slots and second slots; the upper ring sleeve and the lower ring sleeve are respectively provided with a locking hole, the locking holes are inserted into the locking holes through locking pieces to realize the tight attachment of the upper ring sleeve and the lower ring sleeve, the convex parts are extruded, so that the inner walls of two sides of the first open groove and the second open groove are close to each other, and the inner diameter of the tensioning sleeve is reduced to enable the tensioning sleeve to tightly hold the electric spindle and be fixedly connected with the electric spindle. By applying the technical scheme, the flange and the electric spindle can be separated, and the flange structure is compatible with various electric spindle bodies.
Description
Technical Field
The invention relates to the field of flange connection, in particular to a flange structure of an electric main shaft.
Background
With the rapid development of the machine tool industry, machine tool manufacturers use a flange connection form with a self-set specification on a main shaft product, so that the main shaft box of the machine tool in the market has the phenomena of disordered flange specifications and different main shaft nose extensions. The phenomenon that machine tool manufacturers cannot select spindle products completely meeting self structures in the market, further select customized spindle product routes and further aggravate the specification disorder of the spindle flange is caused because the unified standard cannot be realized in the spindle industry late.
For machine tool manufacturers, the design of the spindle flange determines the design of the end face of the headstock and the suspension positions of the tool magazine and the tool changer. The change of the good shape of the flange position of the main shaft will affect the actual processing stroke of the machine tool, so that the appearance of the covering metal plate of the machine tool is adjusted, the position deviation of the tool magazine and the tool changer is caused, the original point of a coordinate system of the machine tool can be changed, the designed main shaft box seriously depends on the main shaft product of a single model, and the advantage of flexible customization is not obvious.
For the manufacturer of the main shaft, the design of the flange of the main shaft is directly related to the internal mechanical structure of the main shaft. If the main shaft nose end length and the flange hole site design can not be consistent with the design suggestions of machine tool manufacturers, the main shaft manufacturers are forced to redesign and produce main shaft bodies, cost waste and stock difficulty are brought to the main shaft manufacturers, and the main shaft manufacturers cannot compatibly popularize the same type of main shaft in the market and are forced to customize new machine types due to different requirements of a large number of machine tool manufacturers on the flange design.
In addition, the precision requirement of a spindle product is high, the condition that the main shaft of the machine tool inclines is directly caused by poor verticality of a flange of the main shaft and a main shaft body, in order to avoid the condition, a main shaft manufacturer generally provides high verticality processing when the machine tool is processed, and the precision generally reaches within 10 um.
Disclosure of Invention
The invention aims to provide an electric main shaft flange structure, which realizes the separation of a flange and an electric main shaft and is compatible with various electric main shaft machine bodies.
In order to solve the technical problem, the invention provides an electric spindle flange structure which comprises an upper ring sleeve, a lower ring sleeve and a tensioning sleeve which are coaxially arranged; the upper ring sleeve and the lower ring sleeve are sequentially arranged from top to bottom, and the electric spindle is arranged in the upper ring sleeve and the lower ring sleeve; the upper part of the tensioning sleeve is arranged between the upper ring sleeve and the electric main shaft, the lower part of the tensioning sleeve is arranged between the lower ring sleeve and the electric main shaft, the upper part and the lower part of the tensioning sleeve are both provided with a certain taper, and taper inclined planes are arranged in an axisymmetric manner, so that the tensioning sleeve forms a circle of convex parts along the circumferential direction; a plurality of first open grooves with upward openings and a plurality of second open grooves with downward openings are formed in the tensioning sleeve along the circumferential direction; the first open grooves and the second open grooves are arranged in a staggered manner; the upper ring sleeve and the lower ring sleeve are respectively provided with a locking hole, the locking holes are sequentially inserted into the locking holes through locking pieces to realize the tight fit of the upper ring sleeve and the lower ring sleeve, the convex parts are extruded along the radial direction of the tensioning sleeve, so that the inner walls of the two sides of the first open groove and the second open groove are close to each other, the inner diameter of the tensioning sleeve is reduced to enable the tensioning sleeve to be in interference fit with the upper ring sleeve and the lower ring sleeve, and the tensioning sleeve tightly holds the electric spindle and is fixedly connected with the electric spindle.
In a preferred embodiment, the inner surfaces of the upper ring and the lower ring are provided with conical surfaces respectively matched with the upper part and the lower part of the tensioning sleeve.
In a preferred embodiment, the first slot and the second slot are arranged at a certain angle with respect to the axial direction of the tensioning sleeve.
In a preferred embodiment, the length of each of the first slot and the second slot is greater than half of the width of the tensioning sleeve.
In a preferred embodiment, the length direction of the convex part is specifically arranged along the vertical direction, and the upper part and the lower part of the tensioning sleeve are respectively arranged at the upper end and the lower end of the convex part, so that the length of the inner diameter of the tensioning sleeve is gradually reduced along the vertical direction along the middle length and the upper end and the lower end.
In a preferred embodiment, the upper ring sleeve and the lower ring sleeve are further provided with a plurality of first flange connecting holes and second flange connecting holes, respectively.
In a preferred embodiment, the projection of the first flange connecting hole on the lower ring sleeve along the vertical direction and the second flange connecting hole on the lower ring sleeve are arranged alternately.
In a preferred embodiment, the upper ring sleeve and the lower ring sleeve are provided with a plurality of first locking holes and second locking holes; the first locking holes are in one-to-one correspondence with the first flange connecting holes and the second flange connecting holes respectively and are coaxially arranged.
In a preferred embodiment, glue is coated between the inner wall of the tensioning sleeve and the electric spindle.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. through the interference fit between the tensioning sleeve, the upper ring sleeve and the lower ring sleeve, the tensioning sleeve extrudes the internal part to tightly hold the electric spindle, and the increase of the angle of the conical surface can improve the holding force of the tensioning sleeve, so that high-rigidity holding is realized. The plurality of first slots and the second slots arranged on the tensioning sleeve enable the tensioning sleeve to have higher deformation, so that the inner hole of the tensioning sleeve can be designed to be in interference fit with the machine body when the tensioning sleeve body is designed, and the tensioning sleeve is large in deformation due to the opening of the slots during installation and is easy to expand and sleeve into the machine body. After the installation is in place, the tensioning sleeve is compressed back to an interference fit state, so that high-precision clamping is realized. In addition, because the conical surface of the tensioning sleeve has a self-centering effect, the tensioning sleeve is designed according to the interference size, the electric spindle body is positioned by effective interference in the locking process, and the coaxiality is greatly improved.
2. The first open groove and the second open groove are arranged to deflect at a certain angle, so that the first open groove and the second open groove are not parallel to the axis of the first open groove and the second open groove, the tensioning sleeve has a higher friction coefficient in the axial direction, and the axial locking strength is effectively improved along with the increase of the deflection angle.
3. The inner surface of the tensioning sleeve is coated with glue which is used for preventing water vapor in the machine tool environment from permeating into the inner part of the tensioning sleeve to form liquid and preventing the liquid from entering the clamping position of the tensioning sleeve and the machine body to cause clamping failure, and meanwhile, the glue further improves the flange clamping reliability.
4. The whole flange structure is unrelated to the structure of the electric main shaft machine body, the machine body adopting various structures can be used, the flange clamping area is positioned around the lower bearing seat of the electric main shaft, the wall thickness of the machine body is sufficient, the strength is ideal, and the deformation is difficult, so the integral holding strength is high, and the precision is reliable; the flange and the machine body are separated, so that the machine body can be produced and stocked according to standard money, the flange can be temporarily customized according to needs, and the time for exchanging the main shaft factory is effectively shortened; endowing the machine without the flange with more compatible scenes, and endowing the machine tool manufacturer with a wider spindle selection target. In addition, for a main shaft factory, a single machine type can be produced in batches by virtue of the flange module to prepare and reduce cost, and promotion can be realized by being compatible with more machines. For a machine tool factory, a single machine table can be replaced with more types of spindles, and one machine has multiple purposes.
Drawings
FIG. 1 is an exploded view of an electrical spindle flange configuration in accordance with a preferred embodiment of the present invention;
FIG. 2 is an exploded, partially enlarged, schematic view of a flange structure of an electric spindle according to a preferred embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of an electrical spindle flange configuration in accordance with a preferred embodiment of the present invention;
fig. 4 is a schematic diagram illustrating a positional relationship between a first flange connection hole of a flange structure of an electric spindle, a first locking hole of an upper collar and a second locking hole of a lower collar according to a preferred embodiment of the present invention;
fig. 5 is a schematic diagram of the overall structure of an electric spindle flange structure according to a preferred embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
A flange structure of an electric spindle 1 is disclosed, referring to fig. 1 to 5, and comprises an upper ring sleeve 2, a lower ring sleeve 3 and a tensioning sleeve 4 which are coaxially arranged; the upper ring sleeve 2 and the lower ring sleeve 3 are arranged in sequence from top to bottom, and the electric spindle 1 is arranged in the upper ring sleeve 2 and the lower ring sleeve 3; the upper part 43 of the tensioning sleeve 4 is arranged between the upper ring sleeve 2 and the electric spindle 1, the lower part 44 of the tensioning sleeve 4 is arranged between the lower ring sleeve 3 and the electric spindle 1, the upper part 43 and the lower part 44 of the tensioning sleeve 4 are both provided with a certain taper, and taper inclined planes are arranged in an axial symmetry manner, so that a circle of convex parts 45 are formed on the tensioning sleeve 4 along the circumferential direction; a plurality of first open grooves 41 with upward openings and a plurality of second open grooves 42 with downward openings are formed in the tensioning sleeve 4 along the circumferential direction; the first slots 41 and the second slots 42 are arranged in a staggered manner; the upper ring sleeve 2 and the lower ring sleeve 3 are respectively provided with a locking hole, locking pieces are sequentially inserted into the locking holes to tightly attach the upper ring sleeve 2 and the lower ring sleeve 3, the convex parts 45 are radially extruded along the tensioning sleeve 4, so that the inner walls of the two sides of the first open groove 41 and the second open groove 42 are close to each other, the inner diameter of the tensioning sleeve 4 is reduced to enable the tensioning sleeve 4 to be in interference fit with the upper ring sleeve 2 and the lower ring sleeve 3, and the tensioning sleeve 4 tightly holds the electric spindle 1 and is fixedly connected with the electric spindle 1.
The plurality of first slots 41 and the second slots 42 arranged on the tensioning sleeve 4 enable the tensioning sleeve 4 to have higher deformation, so that the inner hole of the tensioning sleeve 4 can be designed to be in interference fit with the machine body when the tensioning sleeve 4 is designed, and the tensioning sleeve 4 is large in deformation due to the opening of the slot during installation, and can be sleeved into the machine body easily. After the installation is in place, the tensioning sleeve 4 is compressed back to an interference fit state, so that high-precision clamping is realized.
Specifically, the inner surfaces of the upper ring sleeve 2 and the lower ring sleeve 3 are provided with tapered surfaces respectively matched with the upper part 43 and the lower part 44 of the tensioning sleeve 4. The increase of the angle of the conical surface can improve the holding force of the tensioning sleeve 4, thereby realizing high-rigidity holding. Because the conical surface of the tensioning sleeve 4 has a self-centering effect, the tensioning sleeve 4 is designed according to the interference size, the machine body of the electric spindle 1 is positioned by effective interference in the locking process, and the coaxiality is greatly improved.
Specifically, the lengths of the first slot 41 and the second slot 42 are both greater than half the width of the tensioning sleeve 4. The first open slot 41 and the second open slot 42 are arranged at a certain angle from the axial direction of the tensioning sleeve 4. The first slot 41 and the second slot 42 are arranged to deflect at a certain angle, so that the first slot and the second slot are not parallel to the axis of the first slot and the second slot, and the tensioning sleeve 4 has a higher friction coefficient in the axial direction, so that the axial locking strength is effectively improved along with the increase of the deflection angle.
Specifically, the width direction of the convex portion 45 is set in the vertical direction, and the upper portion 43 and the lower portion 44 of the tension sleeve 4 are respectively set at the upper end and the lower end of the convex portion 45, so that the length of the inner diameter of the tension sleeve 4 is set to be sequentially reduced along the vertical direction.
Specifically, the upper ring sleeve 2 and the lower ring sleeve 3 are further provided with a plurality of first flange connection holes 21 and second flange connection holes, respectively. The projection of the first flange connecting hole 21 on the lower ring sleeve 3 along the vertical direction and the second flange connecting hole are arranged on the lower ring sleeve 3 in a staggered mode at intervals. The first flange connecting hole 21 and the second flange connecting hole are used for connecting other external structures of the electric main shaft 1.
Specifically, the upper ring sleeve 2 and the lower ring sleeve 3 are both provided with a plurality of first locking holes 22 and second locking holes 31; the first locking holes 22 are respectively in one-to-one correspondence with the first flange connecting holes 21 and the second flange connecting holes and are coaxially arranged. Specifically, the first locking hole 22 and the first flange connecting hole 21 on the upper ring 2 are coaxially arranged on the upper ring 2, and the first locking hole 22 and the first flange connecting hole 21 on the upper ring 2 correspond to the second locking hole 31 on the lower ring 3 together; similarly, the first locking hole 22 of the lower collar 3 and the second flange connecting hole of the lower collar 3 are coaxially disposed on the lower collar 3, and the first locking hole 22 and the second flange connecting hole of the lower collar 3 together correspond to the second locking hole 31 of the upper collar 2. More specifically, the depth of the first locking hole 22 is smaller than the depth of the second locking hole 31.
Specifically, glue is coated between the inner wall of the tensioning sleeve 4 and the electric spindle 1. The inner surface of the tensioning sleeve 4 is coated with glue for preventing water vapor in the machine tool environment from permeating into the tensioning sleeve 4 to form liquid, preventing the liquid from entering the tensioning sleeve 4 and the clamping position of the machine body to cause clamping failure, and simultaneously further improving the flange clamping reliability by the glue.
The whole flange structure is unrelated to the structure of the machine body of the electric main shaft 1, the machine body adopting various structures can be used, the flange clamping area is positioned around the lower bearing seat of the electric main shaft 1, the wall thickness of the machine body is sufficient, the strength is ideal, and the deformation is difficult, so the integral holding strength is high, and the precision is reliable; the flange and the machine body are separated, so that the machine body can be produced and stocked according to standard money, the flange can be temporarily customized according to needs, and the time for exchanging the main shaft factory is effectively shortened; endowing the machine without the flange with more compatible scenes, and endowing the machine tool manufacturer with a wider spindle selection target. In addition, for a main shaft factory, a single machine type can be produced in batches by virtue of the flange module to prepare and reduce cost, and promotion can be realized by being compatible with more machines. For a machine tool factory, a single machine table can be replaced with more types of spindles, and one machine has multiple purposes.
The above description is only a preferred embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any person skilled in the art can make insubstantial changes in the technical scope of the present invention within the technical scope of the present invention, and the actions infringe the protection scope of the present invention are included in the present invention.
Claims (9)
1. A flange structure of an electric main shaft is characterized by comprising an upper ring sleeve, a lower ring sleeve and a tensioning sleeve which are coaxially arranged; the upper ring sleeve and the lower ring sleeve are sequentially arranged from top to bottom, and the electric spindle is arranged in the upper ring sleeve and the lower ring sleeve; the upper part of the tensioning sleeve is arranged between the upper ring sleeve and the electric main shaft, the lower part of the tensioning sleeve is arranged between the lower ring sleeve and the electric main shaft, the upper part and the lower part of the tensioning sleeve are both provided with a certain taper, and taper inclined planes are arranged in an axisymmetric manner, so that the tensioning sleeve forms a circle of convex parts along the circumferential direction; a plurality of first open grooves with upward openings and a plurality of second open grooves with downward openings are formed in the tensioning sleeve along the circumferential direction; the first open grooves and the second open grooves are arranged in a staggered manner; the upper ring sleeve and the lower ring sleeve are respectively provided with a locking hole, the locking holes are sequentially inserted into the locking holes through locking pieces to realize the tight fit of the upper ring sleeve and the lower ring sleeve, the convex parts are extruded along the radial direction of the tensioning sleeve, so that the inner walls of the two sides of the first open groove and the second open groove are close to each other, the inner diameter of the tensioning sleeve is reduced to enable the tensioning sleeve to be in interference fit with the upper ring sleeve and the lower ring sleeve, and the tensioning sleeve tightly holds the electric spindle and is fixedly connected with the electric spindle.
2. The electric spindle flange structure according to claim 1, wherein the inner surfaces of the upper and lower collars are provided with tapered surfaces respectively fitted to upper and lower portions of the tension collar.
3. The electric spindle flange structure according to claim 2, wherein the first and second slots are arranged at an angle from an axial direction of the tension sleeve.
4. The electric spindle flange structure according to claim 3, wherein the first and second slots each have a length greater than half the width of the tension sleeve.
5. The electric spindle flange structure according to claim 4, wherein the length direction of the convex portion is vertically arranged, and the upper portion and the lower portion of the tension sleeve are respectively arranged at the upper end and the lower end of the convex portion, so that the inner diameter length of the tension sleeve is gradually reduced along the vertical direction with the middle length and the upper end and the lower end.
6. The electric spindle flange structure according to claim 5, wherein the upper and lower collars are further provided with a plurality of first and second flange connection holes, respectively.
7. The electric spindle flange structure according to claim 6, wherein the first flange connection holes are arranged on the lower ring sleeve in a vertically staggered projection manner with the second flange connection holes.
8. The electric spindle flange structure according to claim 7, wherein a plurality of first locking holes and second locking holes are formed in the upper ring sleeve and the lower ring sleeve; the first locking holes are in one-to-one correspondence with the first flange connecting holes and the second flange connecting holes respectively and are coaxially arranged.
9. An electric spindle flange structure according to any one of claims 1 to 8, wherein glue is applied between the inner wall of the tensioning sleeve and the electric spindle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110202882.XA CN112974884A (en) | 2021-02-23 | 2021-02-23 | Electric main shaft flange structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110202882.XA CN112974884A (en) | 2021-02-23 | 2021-02-23 | Electric main shaft flange structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112974884A true CN112974884A (en) | 2021-06-18 |
Family
ID=76350307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110202882.XA Pending CN112974884A (en) | 2021-02-23 | 2021-02-23 | Electric main shaft flange structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112974884A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201632652U (en) * | 2010-03-23 | 2010-11-17 | 南京工程学院 | Main electric shaft installing and fixing structure based on elastic deformation of conical surface |
| CN203751369U (en) * | 2014-04-22 | 2014-08-06 | 栾学德 | Attaching clamp for machining shaft sleeve outer surface |
| CN205733070U (en) * | 2016-05-20 | 2016-11-30 | 天津泰威齿轮有限公司 | A kind of taper hole centering expansion set |
| CN108941646A (en) * | 2018-09-19 | 2018-12-07 | 重庆青山工业有限责任公司 | A kind of mechanical expansion core fixture for machining center bore work |
| CN209578218U (en) * | 2019-01-24 | 2019-11-05 | 安阳振动器有限责任公司 | A kind of casing processing tool guaranteeing vibrator casing and rotor shaft concentricity |
| CN210290393U (en) * | 2019-05-07 | 2020-04-10 | 辽宁顺达机械制造有限公司 | Pipe connector |
| CN210731028U (en) * | 2019-09-17 | 2020-06-12 | 深圳模德宝科技有限公司 | Locking fixing hoop |
| CN212329683U (en) * | 2020-04-10 | 2021-01-12 | 杭州明柯汽车零部件有限公司 | Tensioning clamp |
-
2021
- 2021-02-23 CN CN202110202882.XA patent/CN112974884A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201632652U (en) * | 2010-03-23 | 2010-11-17 | 南京工程学院 | Main electric shaft installing and fixing structure based on elastic deformation of conical surface |
| CN203751369U (en) * | 2014-04-22 | 2014-08-06 | 栾学德 | Attaching clamp for machining shaft sleeve outer surface |
| CN205733070U (en) * | 2016-05-20 | 2016-11-30 | 天津泰威齿轮有限公司 | A kind of taper hole centering expansion set |
| CN108941646A (en) * | 2018-09-19 | 2018-12-07 | 重庆青山工业有限责任公司 | A kind of mechanical expansion core fixture for machining center bore work |
| CN209578218U (en) * | 2019-01-24 | 2019-11-05 | 安阳振动器有限责任公司 | A kind of casing processing tool guaranteeing vibrator casing and rotor shaft concentricity |
| CN210290393U (en) * | 2019-05-07 | 2020-04-10 | 辽宁顺达机械制造有限公司 | Pipe connector |
| CN210731028U (en) * | 2019-09-17 | 2020-06-12 | 深圳模德宝科技有限公司 | Locking fixing hoop |
| CN212329683U (en) * | 2020-04-10 | 2021-01-12 | 杭州明柯汽车零部件有限公司 | Tensioning clamp |
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Application publication date: 20210618 |
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| RJ01 | Rejection of invention patent application after publication |