CN212775221U - Torque transmission flange structure and part with same - Google Patents

Torque transmission flange structure and part with same Download PDF

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Publication number
CN212775221U
CN212775221U CN202020967820.9U CN202020967820U CN212775221U CN 212775221 U CN212775221 U CN 212775221U CN 202020967820 U CN202020967820 U CN 202020967820U CN 212775221 U CN212775221 U CN 212775221U
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Prior art keywords
flange
cylindrical
semi
flange structure
torque
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CN202020967820.9U
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Chinese (zh)
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凌子龙
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Aici Technology Shenzhen Co ltd
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Aici Technology Shenzhen Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/02—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like
    • F16D1/033—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for connecting two abutting shafts or the like by clamping together two faces perpendicular to the axis of rotation, e.g. with bolted flanges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
    • F16D1/06—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end
    • F16D1/076—Couplings for rigidly connecting two coaxial shafts or other movable machine elements for attachment of a member on a shaft or on a shaft-end by clamping together two faces perpendicular to the axis of rotation, e.g. with bolted flanges

Abstract

A torque transmission flange structure is provided, wherein a flange is provided with a threaded hole or a through hole for penetrating a bolt, and a connecting end of the flange is provided with a semi-cylindrical groove perpendicular to the axis of the flange. The vertical refers to that the axis of the cylindrical surface of the semi-cylindrical surface is vertical to the axis of the flange, and two lines in the vertical relation of the space can be intersected or not intersected, for example, the axis of the semi-cylindrical groove is processed on the radius line of the end surface of the flange, namely the vertical relation of the axis of the semi-cylindrical groove and the axis of the flange is intersected; when the flange structure is connected with another flange with the same structure, the cylindrical pins with the diameter slightly larger than or equal to that of the semi-cylindrical grooves are placed in the semi-cylindrical grooves corresponding to the two flanges, and the two flanges are locked by the bolts, so that the two flanges clamp the cylindrical pins between the two flanges, and the effect of larger bearing and more accurate torque transmission is realized.

Description

Torque transmission flange structure and part with same
Technical Field
The present disclosure relates to torque transmission devices, and particularly to a torque transmission flange structure and a component having the same.
Background
The flange structure is usually used for torque transmission in mechanical transmission, especially for the condition of higher requirement on synchronous precision of transmission, the flange connection mode is mostly used, the traditional flange structure is characterized in that the flanges of two parts are mutually locked by bolts, the end faces of the two flanges are contacted, the torque transmission is realized by the friction force of contact surfaces, the diameter of the flange is usually inconvenient to be randomly increased due to the limitation of the structure and the appearance of the part with the flange, a pin or a use key is optionally inserted between the two flanges for increasing the torque transmitted by the flange and the synchronous precision, the pin needs to be tightly matched with holes on the two flanges to realize better torque transmission effect, at the moment, the tight matching has higher requirement on processing, meanwhile, the tight matching also brings certain trouble for assembling and disassembling, and the pressure locked by the bolts between the two flanges does not increase the torque bearing capacity provided by the pin for the flange connection, the method for increasing the torque bearing by using the key also has the problems, compared with the precision pin and the pin hole, the precision key and the key groove are more difficult to process, and the precision processing cost of the cylindrical pin is lower than that of other parts with the same shape and precision grade; in specific industrial application, the performance requirement on the torque transmission flange is higher and higher, and particularly in the precision machinery industry such as robots and the like, the requirement on the transmission precision is high, the size of the flange is limited to be smaller, and meanwhile, larger torque needs to be transmitted, so that how to improve the torque bearing capacity and the transmission precision of the flange is very important.
Disclosure of Invention
The problems to be solved by the invention are as follows:
1. the torque capacity and the transmission precision of the flange are improved;
2. the inconvenience brought to the assembly and disassembly by the tight fit of pins or keys is avoided.
In order to solve the problems, the technical scheme of the invention is as follows:
a torque transmission flange structure is characterized in that a flange is provided with a threaded hole or a through hole for penetrating a bolt, and a semi-cylindrical groove perpendicular to the axis of the flange is arranged at the connecting end of the flange. The vertical refers to that the axis of the cylindrical surface of the semi-cylindrical surface is vertical to the axis of the flange, and two lines in the vertical relation of the space can be intersected or not intersected, for example, the axis of the semi-cylindrical groove is processed on the radius line of the end surface of the flange, namely the vertical relation of the axis of the semi-cylindrical groove and the axis of the flange is intersected; when the flange structure is connected with another flange with the same structure, the cylindrical pins with the diameter slightly larger than or equal to that of the semi-cylindrical grooves are placed in the semi-cylindrical grooves corresponding to the two flanges, and the two flanges are locked by the bolts, so that the two flanges clamp the cylindrical pins between the two flanges, and the effect of larger bearing and more accurate torque transmission is realized. The flange structure provided by the invention is characterized in that a semi-cylindrical groove for horizontally placing a cylindrical pin is processed at a position on the traditional connecting end surface, which does not interfere with a through hole or a threaded hole, the cylindrical pin has a function which is not a pin in the traditional meaning, because the cylindrical pin does not contact and fix two parts by using an upper section of cylinder and a lower section of cylinder which are divided by the cross section of the cylindrical pin shaft, but contacts and fixes the two parts by using two semi-cylinders which are divided by the plane of the axial lead of the cylindrical pin, the main stress surfaces of the two flange end surfaces after being locked are the semi-cylindrical groove surface and the contact surface of the cylindrical pin, and the two flanges locked mutually at the moment are essentially fixed relatively by pre-pressure of the semi-cylindrical groove surface and the surface of the cylindrical pin, because the pressure of the contact surface is directed to be vertical to the contact surface, and the pre-pressure of the semi-cylindrical groove surface and the surface of the cylindrical pin has the components of the forces directed to the radial direction and the circumferential direction of the flange, the capacity of transmitting torque between two flanges locked by the bolt is increased along with the increase of the locking force of the bolt and is far larger than the friction force of the surface contact with the same size under the locking force of the bolt; the cylindrical pin can be cylindrical roller pins, pins and other precise cylindrical metal parts, the cylindrical diameter of the selected cylindrical pin is slightly larger than or equal to the diameter of a cylindrical surface formed by semi-cylindrical grooves of two flanges, the cylindrical pin can be realized by processing a negative working difference semi-cylindrical groove or selecting a positive working difference cylindrical pin in practical application, the radius working difference of the semi-cylindrical groove processed on the flange and the radius working difference of the cylindrical pin can be set as a pair of tight fit processing working difference, obviously, the length selected by the cylindrical pin is smaller than or equal to the length which the semi-cylindrical groove can be placed in, the effective surface of the cylindrical pin is a cylindrical surface, round corners, chamfers or flat heads can be selected at two ends, the effective surface of the semi-cylindrical groove is a semi-cylindrical surface, and the two ends of the groove can be opened, round corners or flat heads, and the cylindrical pin. The flange structure is applied to a part with the flange structure, the connecting end of the flange refers to a part which is used for realizing connection and fixation with the other flange which is installed in a matched mode on the flange, in the traditional flange, the connecting end mostly refers to a contact end face of the flange, which is used for transmitting torque through friction force after the flange and the other flange are pressed through bolts, and in the invention, the connecting end face is provided with a semi-cylindrical groove part which is vertical to the axis of the flange; if the traditional flange needs to be concentrically positioned and needs to be provided with concentric cylindrical surfaces, if the flange provided by the invention uses at least two cylindrical pins which are not parallel to each other and are arranged in the semi-cylindrical grooves at the corresponding positions on the surface of the flange, the additional technical effects of concentric positioning and radial positioning can be realized like the traditional method using more than two pins, and when the diameter of the pins or the depth of the semi-cylindrical grooves of the flange has larger tolerance, the coaxiality of the flange link can be better ensured by adding the concentric cylindrical surface structure on the flange.
The output flange of the speed reducer is of the flange structure. The invention only provides a speed reducer with an output flange of the flange structure, which comprises parts and structural characteristics for realizing speed reduction transmission in the speed reducer in the prior art, and the speed reducer is not described any more.
A bearing inner ring flange or a bearing outer ring flange of the crossed roller bearing is of the flange structure. The invention provides a crossed roller bearing with a flange structure, which comprises parts and structural characteristics for realizing the crossed roller bearing in the prior art, and the crossed roller bearing is not repeated.
The flange on the flange of the harmonic reducer flexible gear is of the flange structure. The invention only provides a harmonic reducer flexible gear with a flange on a flexible gear flange as the flange structure, which comprises the structural characteristics of the harmonic reducer flexible gear for realizing harmonic drive in the prior art, and the harmonic reducer flexible gear is not repeated.
The flange on the harmonic reducer steel wheel is of the flange structure. The invention discloses a harmonic reducer steel wheel, which is a core part of a harmonic reducer and is also a key transmission part for realizing speed reduction and torque increase, the common structure is used as a fixed end of speed reduction transmission and sometimes used as an output end of the speed reduction transmission, the common steel wheel is an annular part with internal teeth and is provided with a traditional flange structure.
A flange of a motor rotor is of the flange structure. The torque motor is a large torque motor, the output end of a rotor of a part of the torque motors adopts a traditional flange structure at present, the invention only provides the torque motor with the flange of the output end of the rotor adopting the flange structure, the torque motor comprises parts and structural characteristics of the torque motor in the prior art, and the invention is not repeated.
A coupler comprises the flange structure. The coupling is usually used for transmitting torque, the flange of the coupling for transmitting torque by using the traditional flange is changed into the flange structure, namely the coupling provided by the invention, the coupling comprises parts and structural characteristics of the coupling with the flange in the prior art, and the details are not repeated.
A flange of the torque sensor is of the flange structure. The torque sensor is divided into a dynamic state and a static state, is used for measuring transmission torque between two torque transmission parts in series connection, and changes a flange structure of the torque sensor using a flange to connect the parts into the flange structure, namely the torque sensor provided by the invention.
An output flange or a fixed flange of the robot joint module is of the flange structure. The invention only provides a robot joint module with an output flange or a fixed flange of the flange structure, which comprises parts and structural characteristics of the robot joint module in the prior art, and the invention is not repeated.
The torque transmission part and the flange connection method are connected through a flange, and the torque transmission part and the flange connection method comprise a part A with the flange structure, a part B with the flange structure, at least one cylindrical pin and at least 3 bolts, wherein the flange of the part A is provided with at least three through holes for penetrating the bolts, and the flange of the part B is provided with threaded holes corresponding to the flange through holes of the part A; the end surface of the flange of the part A is provided with at least one semi-cylindrical groove which is vertical to the axle center of the flange of the part A, and the flange of the part B is also provided with a semi-cylindrical groove which corresponds to the flange of the part A in position and has the same radius; the radius of the cylindrical pin is slightly larger than that of the semi-cylindrical groove of the flange of the part A, and the length of the cylindrical pin can be placed into the semi-cylindrical groove; during connection, the cylindrical pin is firstly placed in the semi-cylindrical grooves of the flange of the part A and the flange of the part B, then the flange of the part A and the flange of the part B are locked by bolts, the flange of the part A is pressed towards the flange of the part B, the semi-cylindrical grooves of the flange of the part A and the flange of the part B are respectively pressed with the two semi-cylindrical surfaces of the cylindrical pin, and the flange of the part A and the flange of the part B realize precise synchronous transmission through the cylindrical pin. When the flange is assembled, the pressure of the surfaces of the semi-cylindrical grooves on the flanges of the part A and the part B and the cylindrical pin between the semi-cylindrical grooves is gradually increased in the screwing process of the bolt, the pressure forms pre-tightening force between the flange of the part A and the flange of the part B in the radial line direction of the cylindrical pin, the pre-tightening force has radial and circumferential components, and the pre-tightening force is increased along with the screwing process of the bolt.
Since the flanges must be installed in pairs and locked most of the time by using bolts, the structure described above includes at least two parts with flange structures and cylindrical pins corresponding to the semi-cylindrical grooves on the flanges, and bolts for locking the two flanges to each other, which is an assembled set of flange transmission structure; however, just as the conventional flange or the product with the conventional flange structure is sold not necessarily in pairs and also not necessarily provided with bolts, the component with the flange structure having the flange structure characteristic of the present invention can be sold as a single commodity, and the product with the flange structure can be protected as a single technical scheme; it is obvious that the flange structure proposed by the present invention will become a well-known art after the present invention is disclosed, and it is reasonable for a user to know how to use and function the separately purchased parts with the flange structure.
Drawings
Fig. 1 is a schematic structural view of a torque transmission flange according to embodiment 1.
Fig. 2 and embodiment 2 are perspective views of a flexspline of a harmonic reducer having a torque transmission flange structure according to the present invention.
Fig. 3, embodiment 3 is a perspective view of a crossed roller bearing having a torque transmitting flange configuration of the present invention.
Fig. 4 and a schematic structural view of a flange of the crossed roller bearing in embodiment 4 for connecting with a flexible gear of a harmonic reducer.
Fig. 5 and embodiment 4 are sectional views showing a flange connection state of a flexspline and a cross roller bearing of a harmonic reducer having a torque transmission flange structure according to the present invention.
In the figure: 1. a semi-cylindrical groove; 2. threaded or through holes; 3. a cylindrical pin; 4. and (4) bolts.
Detailed Description
The invention is described in further detail below with reference to the drawings.
In the embodiment 1, as shown in fig. 1, a flange has a flange structure that 5 threaded holes and 5 semi-cylindrical grooves are processed on the end surface, the axial line of the semi-cylindrical groove is processed on the radius line of the end surface of the flange, is perpendicular to and intersects with the central axis of the flange, the semi-cylindrical groove is formed by milling a ball milling cutter along the radius line of the end surface of the flange, because more than three bolts are selected for fixation and more than three semi-cylindrical grooves are more favorable for the structural stability after flange connection, therefore, 5 threaded holes and 5 semi-cylindrical grooves with two open ends are selected in the embodiment, in order to ensure the parallelism of the flange after connection, the sizes of the 5 machined semi-cylindrical grooves need to be the same or ensure smaller machining tolerance, thus, when the flange is connected with another flange, 5 pins with the same outer diameter are put in the flange, so that better coaxiality between the two flanges can be ensured.
Embodiment 2, as shown in fig. 2, a harmonic reducer flexspline having a torque transmission flange structure according to the present invention is manufactured by selecting a flexspline material of the prior art and processing a flanged thin-wall structure and teeth by using a conventional processing technique, 5 through holes for passing bolts and 5 semi-cylindrical grooves having half round corners and half open sides are processed on the flange structure of the flanged surface of the flexspline, and the semi-cylindrical grooves are formed by milling along a radius line of the flanged flange end surface of the flexspline using a ball mill.
Embodiment 3, as shown in fig. 3, specifically, a cross roller bearing with a torque transmission flange structure of the present invention as a bearing inner ring flange structure, in which an inner ring, an outer ring and rollers of the bearing are manufactured by the prior art, 5 semi-cylindrical grooves with both open ends are manufactured by milling, using a ball milling cutter, at positions between 5 threaded holes of a flange on an end surface of the inner ring along a radius line of the flange end surface of a flange flanged to a flexible gear.
Embodiment 4, as shown in fig. 4 and 5, a harmonic reducer flexspline having a torque transmission flange structure according to the present invention and an inner race of a cross roller bearing having a structure according to the present invention are connected and fixed by a flange having a structure according to the present invention, the harmonic reducer flexspline is as described in embodiment 2, a flange of a flanged end face thereof and a groove of a flange of an inner race of a cross roller bearing are oppositely disposed, and a cylindrical pin having a diameter 0.02mm larger than that of a semi-cylindrical groove is placed in each pair of grooves having the same size and opposite position, and then a bolt is screwed into a threaded hole of the inner race of the cross roller bearing through a through hole of the harmonic reducer flexspline and locked, since the flanged flange of the harmonic reducer flexspline is thin, the present embodiment also uses a bolt washer for more uniformly distributing the bolt pressure to the area of the semi-cylindrical groove as shown in; the two end faces of the inner ring of the crossed roller bearing are both provided with the torque transmission flange structure provided by the invention, so that the crossed roller bearing can conveniently transmit torque to other parts; the cross-roller bearing was machined as described in example 3.

Claims (9)

1. The utility model provides a torque transmission flange structure, flange are equipped with the screw hole or are used for wearing the through-hole of bolt, its characterized in that: the connecting end of the flange is provided with a semi-cylindrical groove which is vertical to the axle center of the flange.
2. A speed reducer, characterized in that: the output flange of the speed reducer is the flange structure of claim 1.
3. A crossed roller bearing, characterized in that: the bearing inner ring flange or the bearing outer ring flange of the crossed roller bearing is the flange structure of claim 1.
4. The utility model provides a harmonic speed reducer ware flexbile gear which characterized in that: the flange on the flange of the flexible gear of the harmonic reducer is in the flange structure of claim 1.
5. The utility model provides a harmonic speed reducer ware steel wheel which characterized in that: the flange on the harmonic reducer steel wheel is the flange structure of claim 1.
6. A torque motor, characterized by: the flange of the motor rotor is the flange structure of claim 1.
7. A coupling, characterized by: the coupling includes the flange structure of claim 1.
8. A torque sensor, characterized by: the flange of the torque sensor is the flange structure of claim 1.
9. A robot joint module, its characterized in that: the output flange or the fixing flange of the joint module is the flange structure of claim 1.
CN202020967820.9U 2020-04-07 2020-06-01 Torque transmission flange structure and part with same Active CN212775221U (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2020204923149 2020-04-07
CN202020492314 2020-04-07

Publications (1)

Publication Number Publication Date
CN212775221U true CN212775221U (en) 2021-03-23

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Application Number Title Priority Date Filing Date
CN202010483127.9A Pending CN111473058A (en) 2020-04-07 2020-06-01 Torque transmission flange structure and part with same
CN202020967820.9U Active CN212775221U (en) 2020-04-07 2020-06-01 Torque transmission flange structure and part with same

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CN202010483127.9A Pending CN111473058A (en) 2020-04-07 2020-06-01 Torque transmission flange structure and part with same

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CN (2) CN111473058A (en)

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CN111473058A (en) 2020-07-31

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