CN116275294B - Labor-saving cutting device for slender rod convenient for power coordination - Google Patents

Labor-saving cutting device for slender rod convenient for power coordination Download PDF

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Publication number
CN116275294B
CN116275294B CN202310163083.5A CN202310163083A CN116275294B CN 116275294 B CN116275294 B CN 116275294B CN 202310163083 A CN202310163083 A CN 202310163083A CN 116275294 B CN116275294 B CN 116275294B
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China
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speed
shaft
cutting device
hollow shaft
low
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CN202310163083.5A
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Chinese (zh)
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CN116275294A (en
Inventor
欧柏源
唐伟
神翠楠
唐溢成
刘带
商林
梁潮淋
叶际英
肖耘亚
龙迎春
李坚
温汝良
古伟
叶木强
李金灿
赖俊杰
李碗珍
刘文恒
陈俊存
陆强
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Shaoguan University
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Shaoguan University
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Priority to CN202310163083.5A priority Critical patent/CN116275294B/en
Publication of CN116275294A publication Critical patent/CN116275294A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
    • 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
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
    • 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
    • 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
    • B23Q5/12—Mechanical drives with means for varying the speed ratio
    • 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
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

The invention provides a labor-saving cutting device for an elongated rod, which is convenient for power coordination, and comprises a base, two side clamps respectively arranged at two ends of the base, a middle clamp and a cutting device which are arranged between the two side clamps and are coaxial with the two side clamps, and a hand-operated driving mechanism for driving the cutting device to rotate and feed; the hand-operated driving mechanism comprises a rocker, a driving shaft, a high-speed shaft and a low-speed shaft, wherein the high-speed shaft transmits torque to a high-speed hollow shaft lying on the base through the reversing mechanism, and the high-speed hollow shaft drives the cutting device to rotate; the low-speed shaft drives and transmits torque to a low-speed hollow shaft lying on the other side of the base through a reversing mechanism, the rotation direction of the low-speed hollow shaft is the same as that of the high-speed hollow shaft, but the rotation speed difference exists, and the low-speed hollow shaft and the high-speed hollow shaft are linked to drive the cutting device to feed when rotating. The invention can cut the slender rod according to the specification at the lowest cost as possible under the condition of inconvenient or insufficient electric power, and gets rid of the limit of the environment.

Description

Labor-saving cutting device for slender rod convenient for power coordination
Technical Field
The invention relates to the technical field of machining, in particular to a labor-saving cutting device for an elongated rod, which is convenient for power coordination.
Background
By 2021, the total domestic production value of the building industry and industry in China is 72995.7 hundred million yuan and 313071.1 hundred million yuan respectively, and the total domestic production value is quite large; the worldwide industry growth value ranking list of various countries from world banks shows that the China industry is the first to grow in the world with 57718.6 hundred million dollars; machining the elongated rod is an essential task in both the construction industry and industry. The cutting machine is required to cut the slender rod, but the traditional slender rod cutting machine has certain defects, such as the most common grinding wheel cutting machine needs to be powered for cutting, and the slender rod cutting machine can be used only by carrying an engine when the length of a power line is insufficient or a power socket is absent in a cutting place, so that the slender rod cutting machine is very troublesome in the situation, and particularly in extreme environments such as moisture, the use of a power supply is very difficult and dangerous.
Disclosure of Invention
In order to solve the technical problems, the invention designs the labor-saving cutting device for the slender rod, which is convenient for power coordination.
The technical scheme of the invention is realized as follows:
the utility model provides a slender rod labor-saving cutting device convenient to power coordination, includes base, sets up respectively at the both sides anchor clamps at base both ends, sets up between the anchor clamps of both sides, with the coaxial middle anchor clamps and cutting device of both sides anchor clamps, and drive cutting device rotation and hand actuating mechanism of feeding; the hand-operated driving mechanism comprises a rocker, a driving shaft, a high-speed shaft and a low-speed shaft, wherein the driving shaft is directly driven by the rocker, the driving shaft drives the high-speed shaft to synchronously and reversely rotate through a synchronous wheel, and the driving shaft drives the low-speed shaft to rotate below the rotating speed of the driving shaft through a belt transmission device; the high-speed shaft transmits torque to a high-speed hollow shaft lying on the base through a 90-degree reversing mechanism, and the high-speed hollow shaft drives the cutting device to rotate; the low-speed shaft drives and transmits torque to the low-speed hollow shaft lying on the other side of the base through the 90-degree reversing mechanism, the low-speed hollow shaft and the high-speed hollow shaft are on the same axis, the rotation directions are opposite, and the rotation speed difference exists, so that the low-speed hollow shaft and the high-speed hollow shaft are linked to drive the cutting device to feed when rotating.
The cutting device is of a mechanical iris structure and comprises a plurality of arc cutters arranged on the same plane, the cutters are hinged on a base frame, and the base frame is fixedly connected with the low-speed hollow shaft; and the cutter is also provided with a sliding column, the high-speed hollow shaft is fixedly connected with a sliding groove disc, and the sliding groove disc is provided with a sliding groove matched with the sliding column.
The reversing mechanism comprises a small bevel gear and a large bevel gear which are meshed with each other, the small bevel gear is connected with the high-speed shaft or the low-speed shaft, and the large bevel gear is connected with the high-speed hollow shaft or the low-speed hollow shaft.
The belt transmission device is provided with a tensioning mechanism for adjusting the tensioning force.
The belt transmission device comprises a small belt pulley arranged on the driving shaft and a large belt pulley arranged on the low-speed shaft, wherein the small belt pulley is connected with the large belt pulley through a belt. When the cutter works, the belt wheel moves by applying torque to the rocker, the belt wheel and the adjusting tension wheel transmit force to the cutting device, the iris mechanism is driven to rotate by the high-speed shaft and the low-speed shaft, and the arc-shaped cutter is contracted by the rotation speed difference of the high-speed shaft and the low-speed shaft, so that the slender rod is cut, and the work task is completed. Because the cutter is provided with a certain resistance, the cutter is arranged into a labor-saving structure that the small belt pulley drives the large belt pulley. The large pulley and the small pulley may also be arranged to be so large that a rotational speed difference is achieved between the drive shaft and the low-speed shaft by controlling the tension.
The base is provided with an upper cover for covering the belt transmission device, and the tensioning mechanism is fixed on the upper cover. The upper cover plays a role of fixing the tensioning mechanism and also protects the safety of operators.
The tensioning mechanism comprises a tensioning wheel, a fixed frame fixed on the upper cover, a movable piece capable of moving up and down and a bolt for fixing the position of the movable piece; the movable piece is provided with a clamping groove matched with the bolt, the upper end of the movable piece is elastically propped against the fixed frame, and the lower end of the movable piece is hinged with the tensioning wheel and the compacting belt. The fixing frame is arranged on the upper cover, the movable piece penetrates through the upper cover, the tensioning wheel at the lower end presses the belt, the upper end is connected with the pressing rod, the pressing rod is pressed downwards, and the bolt is clamped into the clamping groove, so that the tensioning force can be maintained. When the tensioning force is needed to be increased, the tensioning force is only needed to be pressed down by pressing the upper pressing rod, and meanwhile, the bolts are arranged on the two sides to clamp the helical teeth so as to prevent the helical teeth from rebounding. When the device needs to be reset, the bolts on the two sides are pulled. The tensioning wheel returns to the original position through the elastic force of the spring.
The high-speed hollow shaft and the low-speed hollow shaft are symmetrically arranged for the mirror and are supported on the base through bearings, the hollow shaft on each side is provided with two bearings for supporting, the outer end of the hollow shaft is a rolling bearing, and the inner end of the hollow shaft is a sliding bearing.
The two side clamps and the middle clamp are three-jaw chucks, the two side clamps are used for fixing the slender rod, the middle clamp is used for supporting the slender rod, and the three clamps have centering effects.
The reversing mechanism is provided with a protective cover which is used for preventing materials from splashing into the reversing mechanism to influence the operation of the reversing mechanism and also for protecting the safety of operators; the cutting device lower extreme is equipped with and connects the bits dish, will connect the bits dish to pull out after the cutting and empty piece, convenient clearance.
When the telescopic rod is used, the slender rod passes through the clamps on two sides, the hollow shaft and the middle clamp, the clamps on two ends and the middle clamp are locked, the rocker is rocked to enable the driving shaft to rotate, the driving shaft drives the high-speed shaft to rotate through the synchronous gear, the driving shaft drives the low-speed shaft to rotate through the belt transmission, torque is transmitted to the high-speed hollow shaft and the low-speed hollow shaft through the reversing device, the belt wheel on the driving shaft is smaller than the belt wheel on the low-speed shaft, so that the rotation speed of the high-speed hollow shaft is greater than that of the low-speed hollow shaft, when the low-speed hollow shaft and the high-speed hollow shaft rotate at a differential speed, the sliding column moves from one end to the other end of the sliding groove, the cutter of the mechanical iris structure is condensed to the folding state from the unfolding state, the slender rod is cut off, and the flatness of the cut section of the slender rod can be ensured.
The belt transmission adopted by the invention has a speed regulation function which is not available in other rigid transmissions, and the tension of the belt pulley is regulated by controlling the position of the tension pulley, so that the transmission speed of the belt pulley is controlled, and the requirement of a mechanical iris mechanism on the speed difference required by rotary cutting of the slender rod is met. Besides, the belt transmission has good flexibility, can relieve impact and absorb vibration; for example, when the device rotates too fast, a larger rotating speed difference is generated, the feed amount is larger, the belt can slip when in overload, the cutter and other parts of the device are protected, and the impact is relieved.
Drawings
FIG. 1 is a schematic diagram of the principles of the present invention;
FIG. 2 is a perspective view of the structure of the present invention;
FIG. 3 is an internal block diagram of the present invention;
fig. 4 is a cross-sectional view of the present invention.
In the figure: the device comprises a 1-base, a 2-two-side clamp, a 3-middle clamp, a 4-cutting device, a 41-cutter, a 42-base frame, a 43-chute disc, a 44-chute, a 5-hand-operated driving mechanism, a 51-rocker, a 52-high-speed shaft, a 53-low-speed shaft, a 54-small pulley, a 55-large pulley, a 56-high-speed hollow shaft, a 57-low-speed hollow shaft, a 58-belt, a 59-driving shaft, a 510-synchronous gear, a 6-reversing mechanism, a 61-small bevel gear, a 62-large bevel gear, a 7-tensioning mechanism, a 71-tensioning wheel, a 72-fixing frame, a 73-movable piece, a 74-plug pin, a 75-clamping groove, a 76-pressing rod, an 8-upper cover, a 9-chip receiving disc, a 10-slender rod and a 11-protecting cover.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-4, an elongated rod labor-saving cutting device convenient for power coordination comprises a base 1, two side clamps 2 respectively arranged at two ends of the base 1, wherein the two side clamps 2 are three-jaw chucks and are fixed on the base 1 and a protective cover 11. The three-jaw chuck has a self-centering function, and when the slender rod 10 is clamped, the slender rod 10 can be always positioned in the center of the iris cutting device, so that the slender rod 10 can be cut by the arc blade cutter conveniently, and the abrasion of the cutter caused by unbalanced stress can be reduced. The base is a mirror image arrangement with one rolling bearing and one sliding bearing on each side to support the high speed hollow shaft 56 and the low speed hollow shaft 57. The cutting device 4 is arranged between the two side clamps 2, the middle clamp 3 is arranged beside the cutting device 4, and after the two side clamps 2 at the two ends are clamped, the middle clamp 3 is additionally arranged at the position of the middle close to the cutting mechanism to support and fix the position of the slender rod 10. The middle clamp 3 is fixed in the base frame 42 and rotates along with the base frame 42, and balls are arranged on clamping jaws of the middle clamp 3 to contact with the slender rod 10, so that the middle clamp 3 can play a role in supporting and positioning the slender rod 10.
The cutting device 4 adopts a mechanical iris structure and comprises a plurality of arc cutters 41 arranged on the same plane, wherein the cutters 41 are hinged on a base frame 42, and the base frame 42 is fixedly connected with a low-speed hollow shaft 57; the cutter 41 is also provided with a slide column, a chute disc 43 is fixedly connected to the high-speed hollow shaft 56, and a chute 44 matched with the slide column is arranged on the chute disc 43. Before cutting begins, the slide column is positioned at one end of the slide groove 44, and the cutter 41 is in an unfolding state; during cutting, the sliding column slides in the sliding groove 44 due to the rotation speed difference, so that the cutter 41 is pushed to be gradually folded until the slender rod 10 is cut off, and at the moment, the sliding column is positioned at the other end of the sliding groove 44, and the cutter is in a folded state. The end face of the cutter for cutting the mechanical iris structure is flat, and no burrs and deformation are generated.
The cutting device is driven by a hand-operated driving mechanism 5 to realize rotary cutting and feed, the hand-operated driving mechanism 5 comprises a rocker 51, a driving shaft 59, a high-speed shaft 52 and a low-speed shaft 53, a small belt wheel 54 and a synchronous gear 510 are arranged on the driving shaft 59, a synchronous gear 510 matched with the synchronous gear on the driving shaft 59 is arranged on the high-speed shaft 52, a large belt wheel 55 is arranged on the low-speed shaft 53, the small belt wheel 54 and the large belt wheel 55 are connected through a belt 58, and a belt transmission device is arranged on the belt transmission device for adjusting the tension force by a tension mechanism 7. When the cutting device works, the belt wheel is moved by applying torque to the rocker 51, the driving shaft 59 drives the high-speed shaft to rotate through the synchronous gear 510, meanwhile, the low-speed shaft 53 is driven to rotate through belt transmission, the high-speed shaft 52 transmits the torque to the high-speed hollow shaft 56 lying on the base 1 through the reversing mechanism 6, and the high-speed hollow shaft 56 drives the cutting device to rotate; the low-speed shaft 53 drives and transmits torque to the low-speed hollow shaft 57 lying on the other side of the base through the reversing mechanism 6, the low-speed hollow shaft 57 and the high-speed hollow shaft 56 rotate in the same direction, but the belt wheels are different in size and different in transmission speed, so that the rotation speed of the high-speed hollow shaft 56 is greater than that of the low-speed hollow shaft 57, and the generated rotation speed difference enables the low-speed hollow shaft 57 and the high-speed hollow shaft 56 to drive the cutting device to feed in a linkage mode while rotating. The large pulley 55 and the small pulley 54 may also be set to be as large, so that a difference in rotation speed is achieved between the drive shaft 59 and the low speed shaft 53 by controlling the tension.
The reversing mechanism 6 comprises a small bevel gear 61 and a large bevel gear 62 which are meshed with each other, the reversing mechanism 6 is arranged on the high-speed shaft 52 and the low-speed shaft 53, the small bevel gear 61 is connected with the high-speed shaft 52 or the low-speed shaft 53 through a pin key, and the large bevel gear 62 is connected with the high-speed hollow shaft 56 or the low-speed hollow shaft 56 through a spline. The reversing mechanism 6 is a small bevel gear 61 meshed with a large bevel gear 62, so that the torque is subjected to 90-degree reversing transmission and amplification.
The cutting device 4 lower extreme is equipped with and connects bits dish 9, will connect bits dish 9 to pull out after the cutting and empty piece, convenient clearance.
The base 1 is provided with an upper cover 8 for covering a belt transmission device, the reversing mechanism 6 is provided with a protective cover 11, the upper cover 8 and the protective cover 11 are used for protecting an internal mechanism, so that sundries flying from a working place during working can be prevented from affecting the cutting of an elongated rod, and production and operation dangers caused by improper operation and the like of workers during working can be prevented.
In pulley drives, sometimes integral slipping occurs, which increases belt wear, reduces the rotational speed of the low-speed pulley, and even fails the drive, so that this should be avoided to the greatest extent, and a tensioning mechanism 7 is designed on the belt drive to control its slipping. The tensioning mechanism 7 is fixed on the upper cover 8 and comprises a tensioning wheel 71, a fixed frame 72 fixed on the upper cover 8, a movable piece 73 capable of moving up and down and a bolt 74 for fixing the position of the movable piece 73; the movable piece 73 is provided with a clamping groove 75 matched with the bolt 74, the upper end of the movable piece 73 is elastically propped against the fixed frame 72, and the lower end of the movable piece 73 is hinged with the tensioning wheel 71 and the compression belt. The fixing frame 72 is installed on the upper cover 8, the movable piece 73 passes through the upper cover 8, the tensioning wheel 71 at the lower end presses the belt, the upper end is connected with the pressing rod 76, the pressing rod 76 is pressed downwards, and the bolt 74 is clamped into the clamping groove 75, so that the tensioning force can be maintained. The clamping groove 75 is a plate ratchet, can be directly pressed when being pressed downwards, and when the tensioning force needs to be released, the bolt 74 needs to be pulled out firstly, the pressing rod 76 can be sprung upwards due to the elastic force of the spring, and the bolt 74 is inserted into a proper position to be fixed. When the device needs to adjust the tension in the use process, the device can be directly adjusted without stopping working and then adjusting. The belt pulley transmission has a speed regulation function which is not available in gear transmission, and the tension of the belt pulley is regulated by controlling the position of the tension pulley, so that the control of the belt pulley transmission speed is realized, and the requirement of a mechanical iris mechanism on the speed difference required by rotary cutting of the slender rod is met. And the mechanical iris mechanism has larger size and larger hollow distance, so the belt wheel transmission is used in the position, and the cost can be saved compared with other transmission mechanisms.
Example 2
The transmission modes of the high-speed shaft and the low-speed shaft are changed based on the embodiment 1, specifically: the utility model provides a laborsaving cutting device of slender rod convenient to power coordination, includes base 1, sets up respectively at the both sides anchor clamps 2 at base 1 both ends, and both sides anchor clamps 2 are three-jaw chuck, fixes on base 1 and protection casing 11. The three-jaw chuck has a self-centering function, and when the slender rod 10 is clamped, the slender rod 10 can be always positioned in the center of the iris cutting device, so that the slender rod 10 can be cut by the arc blade cutter conveniently, and the abrasion of the cutter caused by unbalanced stress can be reduced. The base is a mirror image arrangement with one rolling bearing and one sliding bearing on each side, each for supporting a high speed hollow shaft 56 and a low speed hollow shaft 57. The cutting device 4 is arranged between the two side clamps 2, the middle clamp 3 is arranged beside the cutting device 4, and after the two side clamps 2 at the two ends are clamped, the middle clamp 3 is additionally arranged at the position of the middle close to the cutting mechanism to support and fix the position of the slender rod 10. The middle clamp 3 is fixed in the base frame 42 and rotates along with the base frame 42, and balls are arranged on clamping jaws of the middle clamp 3 to contact with the slender rod 10, so that the middle clamp 3 can play a role in supporting and positioning the slender rod 10.
The cutting device 4 adopts a mechanical iris structure and comprises a plurality of arc cutters 41 arranged on the same plane, wherein the cutters 41 are hinged on a base frame 42, and the base frame 42 is fixedly connected with a low-speed hollow shaft 57; the cutter 41 is also provided with a slide column, a chute disc 43 is fixedly connected to the high-speed hollow shaft 56, and a chute 44 matched with the slide column is arranged on the chute disc 43. Before cutting begins, the slide column is positioned at one end of the slide groove 44, and the cutter 41 is in an unfolding state; during cutting, the sliding column slides in the sliding groove 44 due to the rotation speed difference, so that the cutter 41 is pushed to be gradually folded until the slender rod 10 is cut off, and at the moment, the sliding column is positioned at the other end of the sliding groove 44, and the cutter is in a folded state. The end face of the cutter for cutting the mechanical iris structure is flat, and no burrs and deformation are generated.
The cutting device is driven by a hand-operated driving mechanism 5 to realize rotary cutting and feeding, the hand-operated driving mechanism 5 comprises a rocker 51, a driving shaft 59, a high-speed shaft 52 and a low-speed shaft 53, a synchronous gear 510 matched with a synchronous gear on the driving shaft 59 is arranged on the high-speed shaft 52, the driving shaft 59 and the low-speed shaft 53 are connected through a planetary gear reducer, the rotating speed of the high-speed shaft 52 is greater than that of the low-speed shaft 53, and therefore the rotating direction of the low-speed hollow shaft 57 is the same as that of the high-speed hollow shaft 56, but the rotating speed of the high-speed hollow shaft 56 is greater than that of the low-speed hollow shaft 57, and the generated rotating speed difference enables the low-speed hollow shaft 57 and the high-speed hollow shaft 56 to be linked to drive the cutting device to feed the cutter while rotating.
The cutting device 4 lower extreme is equipped with and connects bits dish 9, will connect bits dish 9 to pull out after the cutting and empty piece, convenient clearance.
The reversing mechanism 6 comprises a small bevel gear 61 and a large bevel gear 62 which are meshed with each other, the reversing mechanism 6 is arranged on the high-speed shaft 52 and the low-speed shaft 53, the small bevel gear 61 is connected with the high-speed shaft 52 or the low-speed shaft 53 through a pin key, and the large bevel gear 62 is connected with the high-speed hollow shaft 56 or the low-speed hollow shaft 56 through a spline. The reversing mechanism 6 is a small bevel gear 61 meshed with a large bevel gear 62, so that the torque is subjected to 90-degree reversing transmission and amplification.
The upper cover 8 for covering the planetary gear reducer is arranged on the base 1, the protective cover 11 is arranged at the reversing mechanism 6, the upper cover 8 and the protective cover 11 are used for protecting the internal mechanism, so that sundries flying from a working place during working can be prevented from affecting the cutting of the slender rod, and production operation danger caused by improper operation and the like of workers during working can be prevented.
Example 3
The embodiment changes the fixing mode of the middle clamp 3 on the basis of the embodiment 1, and referring to fig. 1-4, the labor-saving cutting device for the slender rod, which is convenient for power coordination, comprises a base 1 and two side clamps 2 respectively arranged at two ends of the base 1, wherein the two side clamps 2 are three-jaw chucks and are fixed on the base 1 and a protective cover 11. The three-jaw chuck has a self-centering function, and when the slender rod 10 is clamped, the slender rod 10 can be always positioned in the center of the iris cutting device, so that the slender rod 10 can be cut by the arc blade cutter conveniently, and the abrasion of the cutter caused by unbalanced stress can be reduced. The base is a mirror image arrangement with one rolling bearing and one sliding bearing on each side to support the high speed hollow shaft 56 and the low speed hollow shaft 57. The cutting device 4 is arranged between the two side clamps 2, the middle clamp 3 is arranged beside the cutting device 4, and after the two side clamps 2 at the two ends are clamped, the middle clamp 3 is additionally arranged at the position of the middle close to the cutting mechanism to support and fix the position of the slender rod 10. The middle clamp 3 is fixed on the sliding bearing seat and does not rotate along with the base frame 42, and balls are arranged on clamping jaws of the middle clamp 3 to contact with the slender rod 10, so that the middle clamp 3 can play a role in supporting and positioning the slender rod 10.
The cutting device 4 adopts a mechanical iris structure and comprises a plurality of arc cutters 41 arranged on the same plane, wherein the cutters 41 are hinged on a base frame 42, and the base frame 42 is fixedly connected with a low-speed hollow shaft 57; the cutter 41 is also provided with a slide column, a chute disc 43 is fixedly connected to the high-speed hollow shaft 56, and a chute 44 matched with the slide column is arranged on the chute disc 43. Before cutting begins, the slide column is positioned at one end of the slide groove 44, and the cutter 41 is in an unfolding state; during cutting, the sliding column slides in the sliding groove 44 due to the rotation speed difference, so that the cutter 41 is pushed to be gradually folded until the slender rod 10 is cut off, and at the moment, the sliding column is positioned at the other end of the sliding groove 44, and the cutter is in a folded state. The end face of the cutter for cutting the mechanical iris structure is flat, and no burrs and deformation are generated.
The cutting device is driven by a hand-operated driving mechanism 5 to realize rotary cutting and feed, the hand-operated driving mechanism 5 comprises a rocker 51, a driving shaft 59, a high-speed shaft 52 and a low-speed shaft 53, a small belt wheel 54 and a synchronous gear 510 are arranged on the driving shaft 59, a synchronous gear 510 matched with the synchronous gear on the driving shaft 59 is arranged on the high-speed shaft 52, a large belt wheel 55 is arranged on the low-speed shaft 53, the small belt wheel 54 and the large belt wheel 55 are connected through a belt 58, and a belt transmission device is arranged on the belt transmission device for adjusting the tension force by a tension mechanism 7. When the cutting device works, the belt wheel is moved by applying torque to the rocker 51, the driving shaft 59 drives the high-speed shaft to rotate through the synchronous gear 510, meanwhile, the low-speed shaft 53 is driven to rotate through belt transmission, the high-speed shaft 52 transmits the torque to the high-speed hollow shaft 56 lying on the base 1 through the reversing mechanism 6, and the high-speed hollow shaft 56 drives the cutting device to rotate; the low-speed shaft 53 drives and transmits torque to the low-speed hollow shaft 57 lying on the other side of the base through the reversing mechanism 6, the low-speed hollow shaft 57 and the high-speed hollow shaft 56 rotate in the same direction, but the belt wheels are different in size and different in transmission speed, so that the rotation speed of the high-speed hollow shaft 56 is greater than that of the low-speed hollow shaft 57, and the generated rotation speed difference enables the low-speed hollow shaft 57 and the high-speed hollow shaft 56 to drive the cutting device to feed in a linkage mode while rotating. The large pulley 55 and the small pulley 54 may also be set to be as large, so that a difference in rotation speed is achieved between the drive shaft 59 and the low speed shaft 53 by controlling the tension.
The cutting device 4 lower extreme is equipped with and connects bits dish 9, will connect bits dish 9 to pull out after the cutting and empty piece, convenient clearance.
The reversing mechanism 6 comprises a small bevel gear 61 and a large bevel gear 62 which are meshed with each other, the reversing mechanism 6 is arranged on the high-speed shaft 52 and the low-speed shaft 53, the small bevel gear 61 is connected with the high-speed shaft 52 or the low-speed shaft 53 through a pin key, and the large bevel gear 62 is connected with the high-speed hollow shaft 56 or the low-speed hollow shaft 56 through a spline. The reversing mechanism 6 is a small bevel gear 61 meshed with a large bevel gear 62, so that the torque is subjected to 90-degree reversing transmission and amplification.
The base 1 is provided with an upper cover 8 for covering a belt transmission device, the reversing mechanism 6 is provided with a protective cover 11, the upper cover 8 and the protective cover 11 are used for protecting an internal mechanism, so that sundries flying from a working place during working can be prevented from affecting the cutting of an elongated rod, and production and operation dangers caused by improper operation and the like of workers during working can be prevented.
In pulley drives, sometimes integral slipping occurs, which increases belt wear, reduces the rotational speed of the low-speed pulley, and even fails the drive, so that this should be avoided to the greatest extent, and a tensioning mechanism 7 is designed on the belt drive to control its slipping. The tensioning mechanism 7 is fixed on the upper cover 8 and comprises a tensioning wheel 71, a fixed frame 72 fixed on the upper cover 8, a movable piece 73 capable of moving up and down and a bolt 74 for fixing the position of the movable piece 73; the movable piece 73 is provided with a clamping groove 75 matched with the bolt 74, the upper end of the movable piece 73 is elastically propped against the fixed frame 72, and the lower end of the movable piece 73 is hinged with the tensioning wheel 71 and the compression belt. The fixing frame 72 is installed on the upper cover 8, the movable piece 73 passes through the upper cover 8, the tensioning wheel 71 at the lower end presses the belt, the upper end is connected with the pressing rod 76, the pressing rod 76 is pressed downwards, and the bolt 74 is clamped into the clamping groove 75, so that the tensioning force can be maintained. The clamping groove 75 is a plate ratchet, can be directly pressed when being pressed downwards, and when the tensioning force needs to be released, the bolt 74 needs to be pulled out firstly, the pressing rod 76 can be sprung upwards due to the elastic force of the spring, and the bolt 74 is inserted into a proper position to be fixed. When the device needs to adjust the tension in the use process, the device can be directly adjusted without stopping working and then adjusting. The belt pulley transmission has a speed regulation function which is not available in gear transmission, and the tension of the belt pulley is regulated by controlling the position of the tension pulley, so that the control of the belt pulley transmission speed is realized, and the requirement of a mechanical iris mechanism on the speed difference required by rotary cutting of the slender rod is met. And the mechanical iris mechanism has larger size and larger hollow distance, so the belt wheel transmission is used in the position, and the cost can be saved compared with other transmission mechanisms.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims (8)

1. An elongated rod labor-saving cutting device convenient for power coordination, which is characterized in that: the hand-operated cutting device comprises a base, two side clamps respectively arranged at two ends of the base, a middle clamp and a cutting device, wherein the middle clamp and the cutting device are arranged between the two side clamps and are coaxial with the two side clamps, and a hand-operated driving mechanism for driving the cutting device to rotate and feed;
the hand-operated driving mechanism comprises a rocker, a driving shaft, a high-speed shaft and a low-speed shaft, wherein the high-speed shaft transmits torque to a high-speed hollow shaft lying on the base through the reversing mechanism, and the high-speed hollow shaft drives the cutting device to rotate; the low-speed shaft drives and transmits torque to a low-speed hollow shaft lying on the other side of the base through a reversing mechanism, the rotation directions of the low-speed hollow shaft and the high-speed hollow shaft are opposite, the rotation speed difference exists, and the low-speed hollow shaft and the high-speed hollow shaft are linked to drive the cutting device to feed when rotating;
the driving shaft is driven by hand shaking through the rocker, the driving shaft and the high-speed shaft are driven by a pair of synchronous gears, and the driving shaft and the low-speed shaft are driven by a belt driving device;
the cutting device is of a mechanical iris structure and comprises a plurality of arc cutters arranged on the same plane, the cutters are hinged on a base frame, and the base frame is fixedly connected with the low-speed hollow shaft; and the cutter is also provided with a sliding column, the high-speed hollow shaft is fixedly connected with a sliding groove disc, and the sliding groove disc is provided with a sliding groove matched with the sliding column.
2. The power coordination facilitating elongated rod labor saving cutting device according to claim 1, wherein: the reversing mechanism comprises a small bevel gear and a large bevel gear which are meshed with each other, the small bevel gear is connected with the high-speed shaft or the low-speed shaft, and the large bevel gear is connected with the high-speed hollow shaft or the low-speed hollow shaft.
3. The power coordination facilitating elongated rod labor saving cutting device according to claim 1, wherein: the belt transmission device is provided with a tensioning mechanism for adjusting the tensioning force.
4. A power coordination facilitating elongated rod labor saving cutting device according to claim 3, wherein: the belt transmission device comprises a small belt pulley arranged on the driving shaft and a large belt pulley arranged on the low-speed shaft, wherein the small belt pulley is connected with the large belt pulley through a belt.
5. The power coordination facilitating elongated rod labor saving cutting device according to claim 4, wherein: the base is provided with an upper cover for covering the belt transmission device, and the tensioning mechanism is fixed on the upper cover.
6. The power coordination facilitating elongated rod labor saving cutting device according to claim 5, wherein: the tensioning mechanism comprises a tensioning wheel, a fixed frame fixed on the upper cover, a movable piece capable of moving up and down and a bolt for fixing the position of the movable piece; the movable piece is provided with a clamping groove matched with the bolt, the upper end of the movable piece is elastically propped against the fixed frame, and the lower end of the movable piece is hinged with the tensioning wheel and the compacting belt.
7. The power coordination facilitating elongated rod labor saving cutting device according to claim 1, wherein: the two side clamps and the middle clamp are three-jaw chucks.
8. The power coordination facilitating elongated rod labor saving cutting device according to claim 1, wherein: a protective cover is arranged at the reversing mechanism; the lower end of the cutting device is provided with a chip receiving disc.
CN202310163083.5A 2023-02-22 2023-02-22 Labor-saving cutting device for slender rod convenient for power coordination Active CN116275294B (en)

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DE102011106377A1 (en) * 2011-06-10 2012-12-13 Dgr-Graphic Gmbh Three-knife trimmer for head-, foot- and front trimming of a book- or brochure block, has three cutting units, knife holder, counter cutter bar, pressure plate, associated drive elements and feeder
CN110369798A (en) * 2019-07-15 2019-10-25 三峡大学 Round tube cuts adverse slope mouth lathe and method
CN110848104A (en) * 2019-12-01 2020-02-28 西北工业大学 Mechanical iris device driven by shape memory alloy wire
CN111558731A (en) * 2020-05-22 2020-08-21 深圳市创智联科技发展有限公司 Slender rod turning machine tool
CN114871822A (en) * 2022-04-28 2022-08-09 韶关学院 Centrifugal force-free cutting device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011106377A1 (en) * 2011-06-10 2012-12-13 Dgr-Graphic Gmbh Three-knife trimmer for head-, foot- and front trimming of a book- or brochure block, has three cutting units, knife holder, counter cutter bar, pressure plate, associated drive elements and feeder
CN110369798A (en) * 2019-07-15 2019-10-25 三峡大学 Round tube cuts adverse slope mouth lathe and method
CN110848104A (en) * 2019-12-01 2020-02-28 西北工业大学 Mechanical iris device driven by shape memory alloy wire
CN111558731A (en) * 2020-05-22 2020-08-21 深圳市创智联科技发展有限公司 Slender rod turning machine tool
CN114871822A (en) * 2022-04-28 2022-08-09 韶关学院 Centrifugal force-free cutting device

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