CN113983132A - Power input device of main spindle box - Google Patents

Power input device of main spindle box Download PDF

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Publication number
CN113983132A
CN113983132A CN202111325101.2A CN202111325101A CN113983132A CN 113983132 A CN113983132 A CN 113983132A CN 202111325101 A CN202111325101 A CN 202111325101A CN 113983132 A CN113983132 A CN 113983132A
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CN
China
Prior art keywords
power input
belt wheel
input shaft
shaft
hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111325101.2A
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Chinese (zh)
Inventor
孙乃杰
杜可庆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huangshan Yongfeng Mechanical And Electrical Manufacturing Co ltd
Original Assignee
Huangshan Yongfeng Mechanical And Electrical Manufacturing Co ltd
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Publication date
Application filed by Huangshan Yongfeng Mechanical And Electrical Manufacturing Co ltd filed Critical Huangshan Yongfeng Mechanical And Electrical Manufacturing Co ltd
Priority to CN202111325101.2A priority Critical patent/CN113983132A/en
Publication of CN113983132A publication Critical patent/CN113983132A/en
Pending legal-status Critical Current

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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
    • F16H—GEARING
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
    • 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
    • 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means
    • 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
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/36—Pulleys
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/0018—Shaft assemblies for gearings
    • F16H57/0025—Shaft assemblies for gearings with gearing elements rigidly connected to a shaft, e.g. securing gears or pulleys by specially adapted splines, keys or methods
    • 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
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/0018—Shaft assemblies for gearings
    • F16H57/0037—Special features of coaxial shafts, e.g. relative support thereof
    • 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
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/32—Gear shift yokes, e.g. shift forks

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

The invention provides a power input device of a main spindle box, which comprises a main spindle box body, wherein a power input shaft is arranged on the main spindle box body, at least a first power input belt wheel and a second power input belt wheel are sleeved on the power input shaft positioned outside the main spindle box body, a clutch mechanism is arranged between the power input shaft and the first power input belt wheel and between the power input shaft and the second power input belt wheel, the clutch mechanism selects the power input shaft to be in circumferential synchronous rotating connection with one of the first power input belt wheel and the second power input belt wheel, and the power input shaft and the other of the first power input belt wheel and the second power input belt wheel form empty sleeve rotating fit. The rotating speed of the power input shaft is regulated by more than two power input belt wheels and a motor, and then is transmitted to the main shaft in a gear speed change mode and the like, so that the aim of multi-stage rotating speed of the main shaft is fulfilled.

Description

Power input device of main spindle box
Technical Field
The invention relates to a power input technology of a machine tool.
Background
A lathe is taken as an example of a machine tool which is a conventional machining device, a power source of the machine tool is usually a motor, the motor firstly transmits rotation torque to a power input shaft of a main spindle box, and the rotation torque is transmitted to a power output shaft after passing through a plurality of subsequent or downstream stages of variable speed transmission mechanisms, so that the machine tool can be regarded as a main spindle of the lathe. In order to ensure the simple structure and the compact equipment, only one motor is usually provided for transmitting power to the power input shaft of the main shaft box, and in order to ensure that the power output shaft obtains a plurality of stages of proper rotating speeds, at least one intermediate transition shaft is generally arranged between the power input shaft and the power output shaft in the main shaft box besides the power input shaft and the power output shaft, so that the power output shaft can obtain a proper rotating speed stage to meet the requirements of turning.
The more transmission shafts are arranged in the spindle box, the cost is increased, the spindle box is large in size, parts are difficult to arrange and assemble, and the oil demand of the gearbox is increased; in particular, the more the transmission shafts in the main spindle box, the more the noise becomes, the operator must face the noise environment for a long time, and the physical and psychological health is seriously threatened.
The main shaft box of the multi-shaft structure cannot be optimized, and the basic reason is that only one power transmission mode with a fixed transmission ratio is adopted between the selected motor and the power input shaft, namely, the transmission ratio between a motor shaft and a belt pulley arranged on the power input shaft is unique, so that the requirement of realizing the rotating speed stage of the power output shaft only by arranging a corresponding number of intermediate shafts in the main shaft box is met.
Along with the development of motor control technology, speed-regulating motors are widely used, and importantly, the speed-regulating motors can meet the requirement of rotating speed change and difficulty in meeting the requirement of output torque, which is undoubtedly a difficult problem which cannot be avoided for machine tool equipment.
Disclosure of Invention
The invention aims to provide a power input device of a spindle box, which solves the problem of multi-stage rotation speed transmission between a power motor and a power input shaft of the spindle box and realizes multi-stage rotation speed transmission on the premise of ensuring cutting torque.
In order to realize above-mentioned purpose, a power input device of headstock, including the headstock box, be provided with power input shaft, its characterized in that on the headstock box: the power input shaft positioned outside the main spindle box body is at least sleeved with a first power input belt wheel and a second power input belt wheel, a clutch mechanism is arranged between the power input shaft and the first power input belt wheel and between the power input shaft and the second power input belt wheel, the clutch mechanism selects the power input shaft to be in circumferential synchronous rotation connection with one of the first power input belt wheel and the second power input belt wheel, and the power input shaft and the other of the first power input belt wheel and the second power input belt wheel form empty sleeve rotation fit.
In the scheme, the power input shaft is provided with two belt wheels, namely a first power input belt wheel and a second power input belt wheel, one of the first power input belt wheel and the second power input belt wheel of the power input shaft is in a coaxial rotating combined state through selective connection of the clutch, and the power input shaft can obtain corresponding rotating speed according to the rotating speed of different belt wheels, which is completely different from the method of changing the rotating speed of the power input shaft by replacing a belt and the belt wheels in the prior art, and the power input device is combined with a speed regulating motor and the like to obtain the suitable cutting multistage speed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a perspective view of the power input shaft of the present invention;
FIG. 3 is a schematic perspective view of a slide key according to the present invention;
fig. 4 and 5 are schematic perspective views of the first and second power input pulleys of the present invention, respectively.
Detailed Description
As shown in fig. 1, a power input device of a spindle box comprises a spindle box body 10, a power input shaft 20 is arranged on the spindle box body 10, at least a first power input pulley 30 and a second power input pulley 40 are sleeved on a shaft body section of the power input shaft 20 positioned outside the spindle box body 10, a clutch mechanism is arranged between the power input shaft 20 and the first power input pulley 30 and the second power input pulley 40, the clutch mechanism selects the power input shaft 20 to be in circumferential synchronous rotation connection with one of the first power input pulley 30 and the second power input pulley 40, and the power input shaft 20 and the other of the first power input pulley 30 and the second power input pulley 40 form an empty sleeve rotation fit.
In the scheme, the first and second power input belt wheels 30 and 40 are connected to the belt wheels on the shaft of the same motor through two groups of belts, the motors output torque at the same rotating speed, the belt wheels on the motor shaft can be of the same specification or different specifications, so that the first and second power input belt wheels 30 and 40 can obtain different rotating speeds without reduction or attenuation of the rotating torque, when the clutch mechanism selects the combination of the power input shaft 20 and the first power input belt wheel 30, the power input shaft 20 and the second power input belt wheel 40 are in idle running fit, and the rotating torque is transmitted to the power input shaft 20 through the first power input belt wheel 30 by the motor and then transmitted to the downstream transmission mechanism by the power input shaft 20; the reverse is true, i.e. the rotational torque is transmitted by the electric machine to the power input shaft 20 via the second power input pulley 40, while the first power input pulley 30 is free-wheeling on the power input shaft 20 and does not transmit torque.
Preferably, the present invention provides the following clutch mechanism: the power input shaft 20 is a hollow shaft, the clutch mechanism comprises a sliding key 50 arranged in the inner cavity 21 of the power input shaft 20, a lug 51 extending radially is arranged on the sliding key 50, and a key is formed between the outer end of the lug 51 exposed outside the shaft body of the power input shaft 20 and the inner hole walls of the first power input belt wheel 30 and the second power input belt wheel 40 to transmit the rotating torque in a matched manner.
In the above scheme, the power input shaft 20 is designed as a hollow shaft, so that the weight of the power input shaft 20 can be reduced, and the bending strength of the power input shaft can be improved, and the space of the inner hole cavity 21 is utilized for arranging the sliding key 50, wherein the sliding key 50 is a key for axial sliding displacement, and when the sliding key is axially displaced, the sliding key can reach the axial corresponding position of the tube cavity of the first and second power input pulleys 30 and 40 and can realize circumferential synchronous rotation in a key matching manner with the tube cavity of the first and second power input pulleys to transmit torque.
More preferably, the circumferential end surface of the projection 51 is provided with teeth 511, the direction of the crest or the valley of the teeth 511 is consistent with the axial direction of the power input shaft 20, the power input shaft 20 is provided with a strip-shaped hole 22 which is through in the radial direction, the projection 51 is positioned in the strip-shaped hole 22, the projection and the strip-shaped hole form circumferential limit and axial sliding fit, the teeth 511 are exposed outside the strip-shaped hole 22, and the teeth 511 are selectively meshed with or separated from the tooth-shaped parts of the tooth-shaped inner holes of the first and second power input pulleys 30 and 40 when the sliding key 50 is displaced in the axial direction.
Referring to fig. 1, 2 and 3, the strip-shaped hole 22 is provided for the projection 51 to radially extend and constrain, so that the circumferential synchronous rotation limit fit and the axial sliding displacement fit between the projection 51 and the sliding key are realized, and circumferential rotation torque is sequentially transmitted by means of the key fit between the tooth-shaped inner holes of the first and second power input pulleys 30 and 40 and the sliding key 50 and the circumferential synchronous limit between the power input shaft 20 and the sliding key 50. As shown in fig. 3, the teeth 511 are symmetrically disposed on the circumferential surfaces of the two ends of the projection 51, so that the torque transmission capability of the projection 51 can be improved, and the force distribution of the tooth-shaped inner holes of the first and second power input pulleys 30, 40 can also be improved. As shown in fig. 3, the teeth 511 are chamfered at both ends by chamfers 514 to guide them into rapid engagement with the toothed inner bores of the first and second power input pulleys 30, 40.
Preferably, the projection 51 is connected to the axial pull rod 60, and the axial pull rod 60 is selectively displaced to a point where the sliding key 50 is in keyed engagement with one of the first and second power input pulleys 30, 40. Due to the limitation of the position of the projection 51 and the displacement area thereof, in order to facilitate the displacement of the driving projection 51, the present invention provides an axial pull rod 60, and by means of the arrangement of the axial pull rod 60, the other end of the axial pull rod 60 can be extended to a position which is convenient to control, namely, along the outer end of the power input shaft 20, so as to facilitate the operation thereof, and the preferred scheme provided by the present invention is described in detail below with reference to fig. 1 and 2.
The inner end of the bump 51 is provided with an external thread rod head 512, the external thread rod head 512 is in threaded connection with one end of the axial pull rod 60, the other end of the axial pull rod 60 is connected with a pin post 61 which is radially arranged, the pin post 61 extends out of a slot-shaped hole 23 which is arranged on a shaft body of the middle section of the power input shaft 20 and is positioned in the main spindle box body 10 and radially penetrates through the hole cavity 21 and then is connected with a toggle mechanism, the slot length direction of the slot-shaped hole 23 is consistent with the axial direction of the power input shaft 20, and the pin post 61 and the slot-shaped hole 23 form circumferential limiting and axial relative sliding fit.
As shown in fig. 3, the threaded hole at the rod end of the axial pull rod 60 is used for connecting to the external thread rod head 512 at the inner end of the bump 51, so that the axial synchronous displacement of the two can be realized, the pin 61 connected to the other end of the axial pull rod 60 protrudes from the slot hole 23, and when the pin 61 is driven by the external force provided by the toggle mechanism to move in the slot hole 23, the axial pull rod 60 is pushed and pulled together to drive the sliding key 50 to move axially along the power input shaft 20.
In order to ensure that the center line of the sliding key 50 is concentric with the power input shaft 20 and the concentric position relationship between the sliding key 50 and the sliding key is still maintained when the sliding key 50 is displaced, namely, to ensure the reliable meshing of the teeth 511 and the tooth-shaped inner holes of the first and second power input pulleys 30 and 40, the invention is realized by the outer diameter of the axial pull rod 60 matching with the diameter of the inner hole 21 of the power input shaft 20 and forming a sliding fit between the two.
More preferably, the partial shaft outside diameter of the axial pull rod 60 near the externally threaded head 512 matches the diameter of the internal bore 21 of the power input shaft 20. That is, in order to reduce the amount of machining and the difficulty of machining, only a high-precision matching section needs to be machined between the axial pull rod 60 close to the external thread rod head 512 and the inner bore 21 of the power input shaft 20, and the length of the matching section is matched with the displacement stroke of the axial pull rod 60.
As shown in fig. 1 and 3, the outer end of the projection 51 has an outer screw head 513, the outer screw head 513 is connected with a nut guide rod 70, and the outer diameter of the nut guide rod 70 is matched with the inner bore 21 of the power input shaft 20 and the two form a movable fit. Above-mentioned scheme has set up spacing direction cooperation for the both ends of lug 51 for lug 51's positional stability has obtained the assurance, just convenient and convenient assembly, because the scope of feather key 50 displacement as long as satisfied respectively with first, two power input band pulleys 30, 40 constitute the separation and reunion cooperation can, simultaneously for conveniently assembling feather key 50, ensure that feather key 50 packs into from bar hole 22 promptly, so the axial dimension of feather key 50 is less than the length of the axial length direction of bar hole 22, then connect nut guide bar 70 respectively in both ends, axial pull rod 60, thereby reliably stably establish lug 51 with feather key 50 in bar hole 22 department. Since the slide key 50 can be inserted from time to time in an inclined posture when it is loaded from the strip-shaped hole 22, the size in the hole length direction of the strip-shaped hole 22 can be reduced to reduce the amount of processing.
The force transmission mechanism for driving the axial displacement of the pin 61 is explained below.
The movable sleeve is equipped with left and right fender ring 24, 25 on the power input shaft 20, a left side, right fender ring 24, 25 close on the anchor ring and paste each other and paste and both constitute the dismantlement formula and connect, a left side, right fender ring 24, 25 paste the rim department of face and enclose into the ring channel 26 that holds the tip of round pin post 61, a left side, right fender ring 24, 25 and round pin post 61 constitute the synchronous spacing cooperation of axial, a left side, right fender ring 24, 25 outside along going up the annular groove 27 that has the notch outward, annular groove 27 cooperates with toggle mechanism's shift fork 80.
In the above scheme, the shifting fork 80 shifts the combined ring formed by the left and right shift rings 24 and 25 to move axially along the power input shaft 20, thereby driving the pin 61 to move axially synchronously. In the above-described embodiment, the annular groove 26 may be a single recess, and the recess may be any recess as long as it can accommodate the rod end portion of the pin 61, and the left and right retainer rings 24 and 25 and the pin 61 may be axially displaced in synchronization with each other by achieving axial constraint therebetween, and may be rotated in synchronization with each other or rotated relative to each other in the circumferential direction.
The left and right retaining rings 24, 25 are provided with left and right retaining ring sleeves 241, 251 which are arranged in a mutually separated mode, the left and right retaining ring sleeves 241, 251 are positioned in the main spindle box body 10, the inner diameters of the left and right retaining ring sleeves 241, 251 are matched with the shaft diameter of the power input shaft 20 and form movable fit, the shifting fork 80 is connected with an operating handle of the speed regulating mechanism, the annular grooves on the power input shaft 20 at two ends of the groove-shaped hole 23 are provided with sealing rings 28, and the periphery of the sealing rings 28 is in sealing fit with the left and right retaining ring sleeves 241, 251.
The scheme improves convenience for centralized operation and control, namely the speed regulating mechanism originally has the advantages that the speed regulating mechanism is provided with one path of shifting fork 80 for controlling the clutch mechanism in the invention very conveniently, and simultaneously, the left and right retaining rings 241 and 251 are arranged, so that good stability is ensured when the left and right retaining rings 24 and 25 are displaced. Due to the provision of the seal ring 28, the lubricating oil in the main spindle box 10 is blocked outside the slot-shaped hole 23 and cannot reach the inner bore 21 through the slot-shaped hole 23 to leak.
The following describes in detail the assembly structure of the first and second power input pulleys 30 and 40.
The first and second power input belt wheels 30 and 40 are respectively a small belt wheel positioned on the outer side and a large belt wheel positioned on the inner side, a belt wheel seat 90 is arranged at the through hole of the power input shaft 20 on the main spindle box body 10, the belt wheel seat 90 is in a sleeve shape, the inner wall of the belt wheel seat 90 is in clearance fit with the power input shaft 20, and the outer pipe section of the belt wheel seat 90 is inserted into the inner ring of the first bearing 1; the middle part of the second power input belt wheel 40 is provided with a toothed hole 41, the diameters of pipe cavities on two sides of the toothed hole 41 are larger than the diameter of the toothed hole 41, and a pipe hole on the right side of the toothed hole 41 is sleeved on an outer ring of the first bearing 1.
The gear hole 41 in the middle of the second power input belt wheel 40 is sleeved on the outer ring of the second bearing 2 through the pipe hole with the larger pipe diameter on the left side, the inner ring of the second bearing 2 is sleeved on the wheel surface section on the right side of the belt groove 31 of the first power input belt wheel 30, the section where the belt groove 31 of the first power input belt wheel 30 is located is close to the outside exposed on the left axial end surface of the second power input belt wheel 40, the belt groove 42 on the periphery of the second power input belt wheel 40 is located on the left side section of the second power input belt wheel 40, the third bearing 3 is arranged between the outer end of the first power input belt wheel 30 and the power input shaft 20, and the wheel cavity of the first power input belt wheel 30 on the right side of the third bearing 3 is a spline gear hole 32.
It should be noted that the position definition related to the left or right is based on the state shown in fig. 1, and the position definition related to the inside or outside is the inside near or adjacent to the side of the headstock 10, and vice versa.
The first and second power input pulleys 30 and 40 are selected to have a large and a small specification, and the following technical effects are achieved: 1. the required multi-stage rotating speed input can be conveniently obtained, and the embodiment is two stages; 2. the second bearing 2 is arranged between the superposed sections of the first and second power input pulleys 30, 40, which not only saves bearing parts, but also shortens the length of the suspension section of the power input shaft 20, thereby improving the bending resistance of the power input shaft 20 and correspondingly shortening the length of a motor shaft for connecting the two pulleys; 3. the toothed hole 41 on the second power input belt wheel 40 and the toothed hole 32 on the first power input belt wheel 30 can be arranged relatively close to each other, so that the displacement stroke of the sliding key 50 is short, the sliding key 50 can be respectively in clutch fit with the toothed hole 41 and the toothed hole 32, the operation and the control are correspondingly quick, the axial length of a corresponding guide fit section is correspondingly shortened, and the processing difficulty is reduced; 4. the second bearing 2 is arranged between the overlapped sections of the first and second power input pulleys 30, 40 to support the first and second power input pulleys 30, 40 to each other, so that the stability of the first and second power input pulleys 30, 40 is improved, when in operation, only one bending moment acts on the first and second power input pulleys 30, 40, and the other idle pulley contributes to bending-resistant support for the operating pulley.
The end of the power input shaft 20 at the outer end of the first power input pulley 30 is provided with a lock nut 29. the lock nut 29 provides an axial force to be applied to the outer end face of the inner race of the third bearing 3. Because the lock nut 29, the first and second power input pulleys 30 and 40, the first, second and third bearings 1, 2 and 3 and the pulley seat 90 are connected to the main spindle box body 10, the power input shaft 20 is free from radial force and has an unloading function, and the situation that the power input shaft 20 is bent and deformed is avoided.
In addition, fig. 1 in the embodiment only shows a power input transmission structure of the power input shaft 20, a duplicate gear formed by the gears 4 and 5 is arranged on the right section of the power input shaft 20, the gear is shifted by the shifting fork 6, and a downstream transmission shaft and the gear which are not shown can be arranged according to the actual required rotating speed, which is not described again.

Claims (13)

1. The utility model provides a power input device of headstock, includes headstock box (10), is provided with power input shaft (20) on headstock box (10), its characterized in that: the main shaft body section of the power input shaft (20) positioned outside the main shaft box body (10) is at least sleeved with a first power input belt wheel and a second power input belt wheel (30 and 40), a clutch mechanism is arranged between the power input shaft (20) and the first power input belt wheel and the second power input belt wheel (30 and 40), and when the clutch mechanism selects the power input shaft (20) to be in circumferential synchronous rotation connection with one of the first power input belt wheel and the second power input belt wheel (30 and 40), the power input shaft (20) and the other of the first power input belt wheel and the second power input belt wheel (30 and 40) form empty sleeve rotation fit.
2. The power input device of the spindle head according to claim 1, characterized in that: the power input shaft (20) is a hollow shaft, the clutch mechanism comprises a sliding key (50) arranged in an inner hole cavity (21) of the power input shaft (20), a lug (51) extending in the radial direction is arranged on the sliding key (50), and a key is formed between the outer end of the lug (51) exposed outside the shaft body of the power input shaft (20) and the inner hole walls of the first power input belt wheel and the second power input belt wheel (30 and 40) to be matched with each other to transmit rotating torque.
3. The power input device of the spindle head according to claim 2, characterized in that: the gear (511) is arranged on the circumferential end face of the lug (51), the direction of the tooth peak or the tooth valley of the tooth (511) is consistent with the axial direction of the power input shaft (20), the power input shaft (20) is provided with a strip-shaped hole (22) which is through in the radial direction, the lug (51) is positioned in the strip-shaped hole (22), the lug and the strip-shaped hole form circumferential limiting and axial sliding fit, the tooth (511) is exposed outside the strip-shaped hole (22), and the tooth (511) is meshed with or separated from the tooth-shaped parts of the tooth-shaped inner holes of the first power input belt wheel (30) and the second power input belt wheel (40) when the sliding key (50) is displaced in the axial direction.
4. A power input device of a spindle head according to claim 2 or 3, characterized in that: the sliding key (50) is connected with an axial pull rod (60), and the axial pull rod (60) is selectively displaced until the sliding key (50) and one of the first and second power input pulleys (30, 40) form a key connection matching position.
5. The power input device of the spindle head according to claim 4, characterized in that: there is external screw thread pole head (512) lug (51) inner end, external screw thread pole head (512) and the one end spiro union of axial pull rod (60), the other end of axial pull rod (60) is connected with radially arranging round pin post (61), it is continuous with toggle mechanism to stretch out the back in slot hole (23) that the radial through inner bore form (21) set up on the shaft body of round pin post (61) middle section lieing in headstock box (10), the slot length direction of slot hole (23) is unanimous with the axial direction of power input shaft (20), round pin post (61) and slot hole (23) constitute circumference spacing, axial relative sliding fit.
6. The power input device of the spindle head according to claim 5, characterized in that: the outer diameter of the axial pull rod (60) is matched with the diameter of the inner hole cavity (21) of the power input shaft (20), and the two components form sliding fit.
7. The power input device of the spindle head according to claim 6, characterized in that: the partial shaft outer diameter of the axial pull rod (60) close to the external thread shaft head (512) is matched with the diameter of the inner hole cavity (21) of the power input shaft (20).
8. The power input device of the spindle head according to claim 5, characterized in that: the outer end of the convex block (51) is provided with an outer screw head (513), the outer screw head (513) is connected with a nut guide rod (70), and the outer diameter of the nut guide rod (70) is matched with the aperture of an inner hole cavity (21) of a power input shaft (20) of the power input shaft (20) to form movable fit.
9. The power input device of the spindle head according to claim 5, characterized in that: the movable sleeve is equipped with left and right fender ring (24, 25) on power input shaft (20), it is left and right to keep off ring (24, 25) and close on the anchor ring and paste each other and paste and both constitute the dismantlement formula and connect, it is left and right to keep off ring (24, 25) paste the dish edge department of the face and enclose into ring channel (26) that hold round pin post (61) tip, it is left and right to keep off ring (24, 25) and round pin post (61) constitute the synchronous spacing cooperation of axial, it is left and right to keep off ring (24, 25) outside along slotted outside ring channel (27), annular groove (27) cooperate with shift fork (80) of toggle mechanism.
10. The power input device of the spindle head according to claim 9, characterized in that: the left and right baffle rings (24, 25) are provided with left and right baffle ring sleeves (241, 251) which are arranged in a mutually-separated mode, the left and right baffle ring sleeves (241, 251) are positioned in the main spindle box body (10), the inner diameters of the left and right baffle ring sleeves (241, 251) are matched with the shaft diameter of the power input shaft (20) and form sliding fit, the shifting fork (80) is connected with an operating handle of the speed regulating mechanism, the annular grooves on the power input shaft (20) at the two ends of the groove-shaped hole (23) are provided with sealing rings (28), and the periphery of the sealing rings (28) is in sealing fit with the left and right baffle ring sleeves (241, 251).
11. The power input device of the spindle head according to claim 1, characterized in that: the first and second power input belt wheels (30, 40) are respectively a small belt wheel positioned on the outer side and a large belt wheel positioned on the inner side, a belt wheel seat (90) is arranged at a through hole of a power input shaft (20) on the main spindle box body (10), the belt wheel seat (90) is in a sleeve shape, the inner wall of the belt wheel seat is in clearance fit with the power input shaft (20), and the outer pipe section of the belt wheel seat (90) is inserted into the inner ring of the first bearing (1); a toothed hole (41) is formed in the middle of the second power input belt wheel (40), the diameters of pipe cavities on two sides of the toothed hole (41) are larger than the diameter of the toothed hole (41), and a pipe hole in the right side of the toothed hole (41) is sleeved on the outer ring of the first bearing (1).
12. The power input device of the spindle head according to claim 1 or 11, characterized in that: the tooth shape hole (41) in the middle of second power input belt wheel (40) left side major diameter pipe hole cover is put on the outer lane of second bearing (2), the wheel face section on fluted belt (31) right side of first power input belt wheel (30) is established to the inner circle cover of second bearing (2), fluted belt (31) place section of first power input belt wheel (30) is close to and is appeared in the outside of second power input belt wheel (40) left side axial end face, fluted belt (42) of second power input belt wheel (40) periphery is located the left side section of second power input belt wheel (40), set up third bearing (3) between outer end and power input shaft (20) of first power input belt wheel (30), the wheel chamber of first power input belt wheel (30) on third bearing (3) right side is flower tooth hole (32).
13. The power input device of the spindle head according to claim 1 or 11, characterized in that: the end part of the power input shaft (20) at the outer end of the first power input belt wheel (30) is provided with a lock nut (29), and the lock nut (29) provides axial force to be exerted on the outer end surface of the inner ring of the third bearing (3).
CN202111325101.2A 2021-11-10 2021-11-10 Power input device of main spindle box Pending CN113983132A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111325101.2A CN113983132A (en) 2021-11-10 2021-11-10 Power input device of main spindle box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111325101.2A CN113983132A (en) 2021-11-10 2021-11-10 Power input device of main spindle box

Publications (1)

Publication Number Publication Date
CN113983132A true CN113983132A (en) 2022-01-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111325101.2A Pending CN113983132A (en) 2021-11-10 2021-11-10 Power input device of main spindle box

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102588547A (en) * 2011-01-07 2012-07-18 杨泰和 Dual power driving system with epicycle gear sets transmitted in series
CN104290588A (en) * 2014-01-30 2015-01-21 比亚迪股份有限公司 Power transmission system for vehicle and vehicle having the same
CN107830125A (en) * 2017-11-29 2018-03-23 滁州悦达实业有限公司 Dynamic power shift gear box
KR20190001289A (en) * 2017-06-27 2019-01-04 최형진 Power transmission for automobile
CN216430420U (en) * 2021-11-10 2022-05-03 黄山市永丰机电制造有限公司 Power input device of main spindle box

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102588547A (en) * 2011-01-07 2012-07-18 杨泰和 Dual power driving system with epicycle gear sets transmitted in series
CN104290588A (en) * 2014-01-30 2015-01-21 比亚迪股份有限公司 Power transmission system for vehicle and vehicle having the same
KR20190001289A (en) * 2017-06-27 2019-01-04 최형진 Power transmission for automobile
CN107830125A (en) * 2017-11-29 2018-03-23 滁州悦达实业有限公司 Dynamic power shift gear box
CN216430420U (en) * 2021-11-10 2022-05-03 黄山市永丰机电制造有限公司 Power input device of main spindle box

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