CN110560740A - Drill bit switching device of multifunctional electric drill - Google Patents
Drill bit switching device of multifunctional electric drill Download PDFInfo
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- CN110560740A CN110560740A CN201910877587.7A CN201910877587A CN110560740A CN 110560740 A CN110560740 A CN 110560740A CN 201910877587 A CN201910877587 A CN 201910877587A CN 110560740 A CN110560740 A CN 110560740A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/003—Attachments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/02—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
Abstract
The invention discloses a drill bit switching device of a multifunctional electric drill, which comprises a first shell and a second shell which are connected in a sliding manner, wherein a motor driving system is arranged in the second shell, a drill bit storage cylinder is connected to the first shell in a rotating manner, a plurality of drill bit storage holes penetrating through the drill bit storage cylinder are uniformly distributed in the circumferential direction of the drill bit storage cylinder, the drill bit storage holes are respectively used for storing drill bits with different diameters, the axial line of each drill bit storage hole can be sequentially positioned on the extension line of the main shaft axis of the motor driving system in the rotating process of the drill bit storage cylinder relative to the first shell, and the main shaft of the motor driving system can extend into or withdraw from the drill bit storage holes positioned on the extension line of the main shaft axis of the motor driving system along with the relative sliding of the first shell and the second shell. This scheme can be quick convenient switching drill bit on the electric drill to make whole course of working have advantages such as easy operation, machining efficiency height.
Description
Technical Field
The invention relates to the technical field of drilling equipment, in particular to a drill bit switching device of a multifunctional electric drill.
Background
The electric drill is a drilling machine using electricity as power, is a conventional product in electric tools and is also an electric tool product with the largest demand, and the annual production and sale quantity accounts for 35 percent of that of the electric tools in China.
The working principle of the electric drill is as follows: the motor rotor of the electromagnetic rotary or electromagnetic reciprocating small-capacity motor is used for performing magnetic field cutting movement, and then the transmission mechanism drives the operation device to drive the gear to increase the power of the drill bit, so that the drill bit scrapes the surface of an object and better penetrates the object.
The drill bit is the main component part of electric drill, when need adopt the electric drill to process the not unidimensional hole on the object, often need install the not processing in the not hole of unidimensional hole of completion on the electric drill, consequently when in-service use, because the drill bit of a specification often can only be installed on the electric drill, so when the not hole of needs processing equidimensional, often need dismantle the drill bit of current size down earlier, then install the drill bit of other sizes again, make when processing multiple not hole of size like this, need frequent installation and dismantlement drill bit, whole operation process is very loaded down with trivial details, machining efficiency is low.
disclosure of Invention
Aiming at the defects in the prior art, the technical problems to be solved by the invention are as follows: how to provide one kind when processing not unidimensional hole, the drill bit on the switching electric drill that can be convenient fast to make whole course of working have the drill bit auto-change over device of multi-functional electric drill of advantages such as easy operation, machining efficiency height.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a drill bit auto-change over device of multi-functional electric drill, includes sliding connection's first casing and second casing, be equipped with motor drive system in the second casing, it is connected with the drill bit storage cylinder to rotate on the first casing, the circumference equipartition of drill bit storage cylinder has a plurality of running through the drill bit storage hole of drill bit storage cylinder, each the drill bit storage hole is used for depositing the drill bit of different diameters respectively, the drill bit storage cylinder be for first casing rotates the in-process, each the axis that the hole was stored to the drill bit can be in proper order on the extension line of motor drive system's main shaft axis, motor drive system's main shaft along with first casing with the relative slip of second casing can stretch into or withdraw from and be located drill bit storage hole on motor drive system's the main shaft axis extension line.
The working principle of the invention is as follows: when the drill bits of different diameters need to be replaced, the first shell and the second shell slide, the main shaft of the motor driving system is made to exit from the drill bit storage hole, then the drill bit storage cylinder on the first shell is rotated, the drill bit storage hole where the drill bits of different diameters are stored is made to be located on the extension line of the main shaft axis of the motor driving system, the first shell and the second shell slide again at the moment, the main shaft of the motor driving system on the second shell extends into the drill bit storage hole corresponding to the position of the main shaft at the moment, and the main shaft of the motor driving system pushes the drill bit in the drill bit storage hole to extend out of the drill bit storage hole again, so that the hole machining is completed.
the invention has the beneficial effects that: according to the invention, the drill bit storage cylinder is arranged, and the drill bits with different diameters are uniformly distributed in the circumferential direction of the drill bit storage cylinder, so that when the drill bit storage cylinder is used, the drill bits with different diameters in the drill bit storage cylinder respectively correspond to the main shaft of the motor driving system according to requirements, and then the main shaft of the motor driving system drives the drill bits to extend out of the drill bit storage cylinder and process holes. Therefore, the drill bit storage cylinder is only required to be rotated when holes of different sizes are machined, so that drill bits of different diameters can be matched with the main shaft of the motor driving system, the drill bit on the electric drill can be quickly and conveniently switched, and the whole machining process has the advantages of simplicity in operation, high machining efficiency and the like.
Preferably, be equipped with the kidney slot on the first casing, the length direction in kidney slot is followed first casing with the relative slip direction of second casing, the screw hole has all been seted up at kidney slot length direction's both ends, the second casing with the position rotation that the kidney slot corresponds is connected with the positioning screw, the positioning screw passes the second casing stretches into the kidney slot is interior and can be followed the kidney slot slides, just the positioning screw removes can be relative during the position of screw hole the second casing rotates and stretches into make in the screw hole first casing with second casing fastening connection.
Therefore, in the process that the first shell and the second shell slide relatively, the positioning screw penetrates through the second shell and extends into the kidney-shaped groove, so that the first shell and the second shell slide along a set route under the guiding action of the positioning screw; meanwhile, when the second shell drives the positioning screws to slide to the two ends of the length direction of the kidney-shaped groove in the kidney-shaped groove, the sliding positions of the two ends of the second shell are limited under the limiting action of the kidney-shaped groove, and the two positions respectively correspond to the position where the main shaft of the motor driving system just exits from the drill bit storage hole and the position where the main shaft of the motor driving system drives the drill bit to move to a working point, so that the drill bits can accurately reach the working point when different drill bits are switched to work through the limiting action of the two ends of the kidney-shaped groove; furthermore, both ends through at kidney-shaped groove length direction all set up the screw hole, when the second casing drives the positioning screw and removes the both ends position in kidney-shaped groove, the positioning screw just in time corresponds with the screw hole position at both ends, it can make the positioning screw stretch into in the screw hole to rotate the positioning screw this moment, and then utilize the positioning screw to realize the fastening connection between first casing and the second casing, and thus, when motor drive system's main shaft drove the drill bit and reachs the operating point and carry out the during operation, the positioning screw carries out fastening connection between with first casing and the second casing, thereby the effectual normal work who guarantees the drill bit.
Preferably, the first casing is internally provided with two mounting seats along the relative sliding direction of the first casing and the second casing, an installation shaft is connected between the two mounting seats, the drill bit storage cylinder is rotatably connected to the installation shaft, and the lower side of the drill bit storage cylinder protrudes out of the first casing.
Like this, when the drill bit storage cylinder needs to be rotated to make the drill bits of different diameters carry out the cooperation with motor drive system's main shaft, can artificial effect in the position of drill bit storage cylinder protrusion first casing, then rotate the drill bit storage cylinder for it rotates on the installation axle, makes drill bit of drill bit storage cylinder circumference different diameters be in same water flat line with motor drive system's main shaft from this, motor drive system's main shaft drives the drill bit rather than the diameter that corresponds and carries out work again.
Preferably, the part of the mounting shaft connected with the drill bit storage cylinder is in a polygon prism shape, and the positions of edges of the polygon prism shape on the mounting shaft correspond to the positions of drill bit storage holes on the drill bit storage cylinder one by one.
Thus, the part of the mounting shaft connected with the drill bit storage cylinder is designed into a polygonal column shape, and the positions of all edges correspond to the positions of all drill bit storage holes on the drill bit storage cylinder one by one, so that one drill bit storage hole corresponds to one edge on the mounting shaft, so that when the drill bit storage cylinder rotates, the drill bit storage hole also rotates by a corresponding distance every time the drill bit storage cylinder rotates by an edge distance around the mounting shaft, therefore, when drill bits with different diameters are required to correspond to the main shaft of the motor driving system, only the drill bit storage cylinder needs to rotate by a corresponding number of edge distances around the mounting shaft according to the storage positions of the drill bits, for example, when the drill bit required to be replaced and the drill bit which is currently working are stored in two adjacent drill bit storage holes, only the drill bit storage cylinder needs to rotate by an edge distance around the mounting shaft, so that the drill bit adjacent to the currently working drill bit and the main shaft of the motor driving system can be ensured to be, therefore, after the drill bits are switched every time, the drill bits can be effectively guaranteed to be accurately matched with the main shaft of the motor driving system, and the whole operation process is very simple due to the design.
Preferably, a plurality of bulges are circumferentially arranged on a main shaft of the motor driving system, one end of each drill bit, facing the motor driving system, is connected with a transition piece capable of sliding along the drill bit storage hole, a matching groove capable of allowing the main shaft of the motor driving system to extend into is formed in the transition piece, and a groove capable of being matched with the bulges is formed in the inner surface of the matching groove.
Like this, through at each drill bit towards the one end installation transition piece of motor drive system, set up cooperation groove and recess simultaneously on the transition piece, set up the arch on motor drive system's the main shaft, when motor drive system stretched into the drill bit and stores up downtheholely, motor drive system's main shaft stretched into the cooperation inslot, and the arch on it meshes with the recess mutually for carry out reliable connection between motor drive system's main shaft and the drill bit.
Preferably, the drill bit storage cylinder is circumferentially and uniformly provided with 6 drill bit storage holes, the mounting shaft and the part connected with the drill bit storage cylinder are in a hexagonal prism shape, and the six edge positions of the hexagonal prism of the mounting shaft correspond to the positions of the six drill bit storage holes in the drill bit storage cylinder one by one.
Like this, store the hole at 6 drills of circumference equipartition of drill bit accumulator, design into hexagonal prism shape with the part that installation axle and drill bit accumulator are connected simultaneously, like this, every edge of installation axle just in time stores the position one-to-one in hole with 6 drills, makes things convenient for the regulation of drill bit storage hole position.
Preferably, a limiting hole communicated with the drill bit storage hole is further formed in one end, facing the motor driving system, of each drill bit storage hole, and the diameter of each limiting hole is smaller than that of each drill bit storage hole and larger than the outer diameter of a protrusion on a spindle of the motor driving system.
Like this, through setting up spacing hole, when the drill bit of different diameters needs to be changed, motor drive system's main shaft drives the drill bit of former work and gets back to in the drill bit stores the hole, when the drill bit got back to the position in spacing hole, under the limiting action in spacing hole, the drill bit will not continue to follow motor drive system's main shaft again and remove, motor drive system's main shaft and drill bit separation this moment and withdraw from former drill bit and store the hole, and the drill bit will get back to the drill bit again and store downtheholely after accomplishing work.
Preferably, the first shell is provided with a waist-shaped groove on two sides perpendicular to the relative sliding direction of the first shell and the second shell, and the two sides of the second shell corresponding to the waist-shaped groove are connected with a positioning screw in a rotating manner.
Like this, all set up the kidney slot through the both sides at first casing, all set up the positioning screw in the position that second casing both sides and kidney slot correspond, make the relative slip between first casing and the second casing more accurate stable on the one hand, on the other hand can make the connection between first casing and the second casing more firm through the positioning screw of both sides.
Preferably, two bulges are uniformly distributed on the circumference of a main shaft of the motor driving system, and grooves corresponding to the bulges are formed in the positions, corresponding to the bulges, of the inner surface of the matching groove.
Like this, through set up two archs on motor drive system's main shaft, set up two recesses on the transition piece, can realize the reliable connection between motor drive system's main shaft and the drill bit on the one hand, make whole connection structure simple simultaneously, processing is convenient.
Preferably, the first shell and the second shell are both made of aluminum alloy materials.
Therefore, the first shell and the second shell are made of aluminum alloy materials, so that the first shell and the second shell are light in weight and good in performance.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an embodiment of the present invention;
FIG. 3 is an exploded view of the spindle of the motor drive system exiting the bit storage hole in accordance with one embodiment of the present invention;
Fig. 4 is an exploded view of the spindle of the motor drive system extending into the bit storage hole in accordance with one embodiment of the present invention.
The reference numerals are explained below: the drill bit comprises a first shell 1, a drill bit storage cylinder 11, a mounting shaft 12, a strip-shaped groove 13, a mounting seat 14, a second shell 2, a positioning screw 21 and a main shaft 22 of a motor driving system.
Detailed Description
The invention will be further explained with reference to the drawings and the embodiments.
As shown in the attached drawings 1 to 4, a drill bit switching device of a multifunctional electric drill comprises a first shell 1 and a second shell 2 which are connected in a sliding mode, a motor driving system is arranged in the second shell 2, a drill bit storage cylinder 11 is connected to the first shell 1 in a rotating mode, a plurality of drill bit storage holes penetrating through the drill bit storage cylinder 11 are evenly distributed in the circumferential direction of the drill bit storage cylinder 11, drill bits with different diameters are stored in the drill bit storage holes respectively, the drill bit storage cylinder 11 rotates relative to the first shell 1, the axis of each drill bit storage hole can be located on the extension line of the axis of a main shaft 22 of the motor driving system in sequence, and the main shaft 22 of the motor driving system can extend into or withdraw from the drill bit storage holes located on the extension line of the axis of the main shaft along with the relative sliding of the first shell 1.
The working principle of the invention is as follows: when the drill bits with different diameters need to be replaced, the first shell 1 and the second shell 2 are slid, the main shaft 22 of the motor driving system is made to withdraw from the drill bit storage hole, then the drill bit storage cylinder 11 on the first shell 1 is rotated, the drill bit storage hole where the drill bits with different diameters are stored is made to be located on an extension line of the axis of the main shaft 22 of the motor driving system, the first shell 1 and the second shell 2 are slid again at the moment, the main shaft 22 of the motor driving system on the second shell 2 is made to extend into the drill bit storage hole corresponding to the position of the main shaft 22 at the moment, and the main shaft 22 of the motor driving system pushes the drill bit in the drill bit storage hole to extend out of the drill bit storage hole again, so that the.
The invention has the beneficial effects that: according to the invention, the drill bit storage cylinder 11 is arranged, and the drill bits with different diameters are uniformly distributed and arranged in the circumferential direction of the drill bit storage cylinder 11, when in use, the drill bits with different diameters in the drill bit storage cylinder 11 respectively correspond to the main shaft 22 of the motor driving system according to requirements, and then the main shaft 22 of the motor driving system drives the drill bits to extend out of the drill bit storage cylinder 11 for hole processing. Therefore, the drill bit storage cylinder 11 only needs to be rotated when holes of different sizes are machined, so that drill bits of different diameters can be matched with the main shaft 22 of the motor driving system, the drill bit on the electric drill can be quickly and conveniently switched, and the whole machining process has the advantages of being simple in operation, high in machining efficiency and the like.
In this embodiment, be equipped with bar groove 13 on first casing 1, the relative sliding direction of first casing 1 and second casing 2 is followed to the length direction in bar groove 13, the screw hole has all been seted up at bar groove 13 length direction's both ends, second casing 2 is connected with positioning screw 21 with the position rotation that bar groove 13 corresponds, positioning screw 21 passes second casing 2 and stretches into bar groove 13 in and can slide along bar groove 13, and positioning screw 21 can rotate and stretch into the downthehole first casing 1 of messenger and second casing 2 fastening connection relatively second casing 2 when moving the position of screw hole.
Thus, in the process that the first shell 1 and the second shell 2 slide relatively, the positioning screw 21 passes through the second shell 2 and extends into the strip-shaped groove 13, so that the first shell 1 and the second shell 2 slide along a given route under the guiding action of the positioning screw 21; meanwhile, when the second shell 2 drives the positioning screws 21 to slide to the two ends of the strip-shaped groove 13 in the length direction, under the limiting action of the strip-shaped groove 13, the sliding positions of the two ends of the second shell 2 are limited, and the two positions correspond to the position where the main shaft 22 of the motor driving system just exits from the drill bit storage hole and the position where the main shaft 22 of the motor driving system drives the drill bit to move to a working point respectively, so that the drill bits can accurately reach the working point when different drill bits are switched to work through the limiting action of the two ends of the strip-shaped groove 13; furthermore, both ends through at bar groove 13 length direction all set up the screw hole, when second casing 2 drives positioning screw 21 and removes the both ends position in bar groove 13, positioning screw 21 just in time corresponds with the screw hole position at both ends, it can make positioning screw 21 stretch into in the screw hole to rotate positioning screw 21 this moment, and then utilize positioning screw 21 to realize the fastening connection between first casing 1 and the second casing 2, thus, when motor drive system's main shaft 22 drives the drill bit and reachs the operating point and carry out the work, positioning screw 21 carries out fastening connection between with first casing 1 and the second casing 2, thereby the effectual normal work who guarantees the drill bit.
In this embodiment, two mounting seats 14 are arranged in the first housing 1 along the relative sliding direction of the first housing 1 and the second housing 2, an installation shaft 12 is connected between the two mounting seats 14, the drill bit storage cylinder 11 is rotatably connected to the installation shaft 12, and the lower side of the drill bit storage cylinder 11 protrudes out of the first housing 1.
Like this, when need rotate drill bit storage cylinder 11 and make the drill bit of different diameters and motor drive system's main shaft 22 carry out the cooperation work, can artificial effect at the position of drill bit storage cylinder 11 protrusion first casing 1, then rotate drill bit storage cylinder 11 for it rotates on installation axle 12, makes the drill bit of drill bit storage cylinder 11 circumference different diameters and motor drive system's main shaft 22 be in same horizontal line from this, and motor drive system's main shaft 22 drives the drill bit of its diameter that corresponds again and carries out work.
In this embodiment, the connection portion between the mounting shaft 12 and the bit storage cylinder 11 is in a polygon prism shape, and the positions of the edges of the polygon prism shape on the mounting shaft 12 correspond to the positions of the bit storage holes on the bit storage cylinder 11 one by one.
Thus, by designing the connecting portion of the mounting shaft 12 and the bit storage cylinder 11 into a polygonal column shape, and simultaneously, each edge position corresponds to each bit storage hole position on the bit storage cylinder 11, so that one bit storage hole corresponds to one edge on the mounting shaft 12, when the bit storage cylinder 11 is rotated, the bit storage hole is rotated by a corresponding distance every time the bit storage cylinder 11 rotates by an edge distance around the mounting shaft 12, therefore, when bits with different diameters are required to correspond to the spindle 22 of the motor driving system, it is only necessary to rotate the bit storage cylinder 11 by a corresponding number of edge distances around the mounting shaft 12 according to the bit storage positions, for example, when a bit to be replaced and a currently working bit are stored in two adjacent bit storage holes, it is only necessary to rotate the bit storage cylinder 11 by an edge distance around the mounting shaft 12, the drill bit adjacent to the current working drill bit and the main shaft 22 of the motor driving system can be ensured to be positioned on the same horizontal line, so that the drill bit can be effectively ensured to be accurately matched with the main shaft 22 of the motor driving system after being switched every time, and the whole operation process is also very simple due to the design.
In this embodiment, motor drive system's main shaft 22 is equipped with a plurality of archs on the circumference, and one end towards motor drive system is connected with the gliding transition piece of drill bit storage hole on each drill bit, offers the cooperation groove that can supply motor drive system's main shaft 22 to stretch into on the transition piece, and the internal surface in cooperation groove is offered can with protruding complex recess.
Like this, through at each drill bit towards the one end installation transition piece of motor drive system, set up cooperation groove and recess on the transition piece simultaneously, set up the arch on motor drive system's the main shaft 22, when motor drive system stretched into the drill bit and stores up downtheholely, motor drive system's main shaft 22 stretched into the cooperation inslot, and the arch on it meshes with the recess mutually for carry out reliable connection between motor drive system's main shaft 22 and the drill bit.
in this embodiment, the drill storage cylinder 11 has 6 drill storage holes uniformly distributed in the circumferential direction, the connection portion between the mounting shaft 12 and the drill storage cylinder 11 is in the shape of a hexagonal prism, and the six edge positions of the hexagonal prism of the mounting shaft 12 correspond to the positions of the six drill storage holes on the drill storage cylinder 11 one by one.
Like this, store the hole at 6 drills of drill bit storage cylinder 11's circumference equipartition, design into hexagonal prism shape with the part that installation axle 12 and drill bit storage cylinder 11 are connected simultaneously, like this, every edge of installation axle 12 just in time stores the position one-to-one in hole with 6 drills, makes things convenient for the regulation of drill bit storage hole position.
In this embodiment, a limiting hole communicated with the drill bit storage hole is further disposed at an end of each drill bit storage hole facing the motor driving system, and a diameter of the limiting hole is smaller than that of the drill bit storage hole and larger than an outer diameter of a protrusion on the spindle 22 of the motor driving system.
Like this, through setting up spacing hole, when the drill bit of different diameters needs to be changed, motor drive system's main shaft 22 drives the drill bit of former work and gets back to in the drill bit stores the hole, when the drill bit got back to the position in spacing hole, under the limiting action in spacing hole, the drill bit will not continue to follow motor drive system's main shaft 22 and remove again, motor drive system's main shaft 22 and drill bit separation this moment and withdraw from former drill bit and store the hole, and the drill bit will get back to the drill bit again after accomplishing work and store downtheholely.
In this embodiment, the two sides of the first casing 1 perpendicular to the relative sliding direction of the first casing 1 and the second casing 2 are symmetrically provided with the strip-shaped groove 13, and the two sides of the second casing 2 corresponding to the strip-shaped groove 13 are rotatably connected with the positioning screw 21.
Like this, all set up bar groove 13 through the both sides at first casing 1, all set up positioning screw 21 in the position that second casing 2 both sides and bar groove 13 correspond, make the relative slip between first casing 1 and the second casing 2 more accurate stable on the one hand, on the other hand can make the connection between first casing 1 and the second casing 2 more firm through positioning screw 21 of both sides.
In this embodiment, the main shaft 22 of the motor driving system is circumferentially and uniformly provided with two protrusions, and the inner surface of the matching groove and the positions corresponding to the protrusions are provided with grooves corresponding to the protrusions.
Thus, the two bulges are arranged on the main shaft 22 of the motor driving system, and the two grooves are arranged on the transition piece, so that on one hand, the reliable connection between the main shaft 22 of the motor driving system and the drill bit can be realized, and meanwhile, the whole connection structure is simple and the processing is convenient.
In the present embodiment, the first housing 1 and the second housing 2 are both made of an aluminum alloy material.
Therefore, the first shell 1 and the second shell 2 are made of aluminum alloy materials, so that the first shell 1 and the second shell 2 are light in weight and good in performance.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all that should be covered by the claims of the present invention.
Claims (10)
1. The utility model provides a drill bit auto-change over device of multi-functional electric drill, its characterized in that, includes sliding connection's first casing and second casing, be equipped with motor drive system in the second casing, it is connected with the drill bit storage cylinder to rotate on the first casing, the circumference equipartition of drill bit storage cylinder has a plurality of running through the drill bit of drill bit storage cylinder stores the hole, each the drill bit is stored the hole and is used for depositing the drill bit of different diameters respectively, the drill bit storage cylinder be for first casing rotates the in-process, each the axis that the hole was stored to the drill bit can be in proper order on the extension line of motor drive system's main shaft axis, motor drive system's main shaft along with first casing with the relative slip of second casing can stretch into or withdraw from and be located the hole is stored to the drill bit on motor drive system's the main shaft.
2. The drill bit switching device of the multifunctional electric drill according to claim 1, wherein a kidney-shaped groove is formed in the first housing, the length direction of the kidney-shaped groove is along the relative sliding direction of the first housing and the second housing, screw holes are formed in both ends of the kidney-shaped groove in the length direction, a position adjusting screw is rotatably connected to the position of the second housing corresponding to the kidney-shaped groove, the position adjusting screw penetrates through the second housing, extends into the kidney-shaped groove and can slide along the kidney-shaped groove, and the position adjusting screw moves to the position of the screw hole, can rotate relative to the second housing and extends into the screw hole, so that the first housing and the second housing are fixedly connected.
3. The drill bit switching device of the multi-purpose electric drill as claimed in claim 1, wherein two mounting seats are provided in the first housing along a direction of relative sliding between the first housing and the second housing, an installation shaft is connected between the two mounting seats, the drill bit storage cylinder is rotatably connected to the installation shaft, and a lower side of the drill bit storage cylinder protrudes from the first housing.
4. The device for switching the drill bits of the multi-purpose electric drill according to claim 3, wherein the portion of the mounting shaft connected to the drill bit storage cylinder has a polygonal prism shape, and the positions of edges of the polygonal prism shape on the mounting shaft correspond to the positions of the drill bit storage holes on the drill bit storage cylinder one by one.
5. The drill bit switching device of the multifunctional electric drill according to claim 1, wherein a plurality of protrusions are circumferentially arranged on a spindle of the motor driving system, a transition piece capable of sliding along the drill bit storage hole is connected to one end, facing the motor driving system, of each drill bit, a matching groove into which the spindle of the motor driving system can extend is formed in the transition piece, and a groove capable of being matched with the protrusions is formed in the inner surface of the matching groove.
6. The drill bit switching device of the multifunctional electric drill according to claim 3, wherein 6 drill bit storage holes are uniformly distributed in the circumferential direction of the drill bit storage cylinder, the connecting portion of the mounting shaft and the drill bit storage cylinder is in a hexagonal prism shape, and the six edge positions of the hexagonal prism of the mounting shaft correspond to the positions of the six drill bit storage holes in the drill bit storage cylinder one by one.
7. The drill bit switching device of the multi-purpose electric drill as claimed in claim 1, wherein a limiting hole communicating with the drill bit storage hole is further provided at an end of each drill bit storage hole facing the motor driving system, and a diameter of the limiting hole is smaller than a diameter of the drill bit storage hole and larger than an outer diameter of a protrusion on a spindle of the motor driving system.
8. The drill bit switching device of the multifunctional electric drill according to claim 2, wherein the first housing is symmetrically provided with a kidney-shaped groove on both sides perpendicular to the relative sliding direction of the first housing and the second housing, and the positions of both sides of the second housing corresponding to the kidney-shaped groove are rotatably connected with a positioning screw.
9. The drill bit switching device of the multifunctional electric drill according to claim 5, wherein two protrusions are uniformly distributed on a main shaft of the motor driving system in the circumferential direction, and grooves corresponding to the protrusions are formed in positions, corresponding to the protrusions, of the inner surface of the matching groove.
10. The drill bit switching mechanism of a utility drill according to claim 1 wherein the first housing and the second housing are both made of an aluminum alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910877587.7A CN110560740A (en) | 2019-09-17 | 2019-09-17 | Drill bit switching device of multifunctional electric drill |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910877587.7A CN110560740A (en) | 2019-09-17 | 2019-09-17 | Drill bit switching device of multifunctional electric drill |
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| CN110560740A true CN110560740A (en) | 2019-12-13 |
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| CN201910877587.7A Pending CN110560740A (en) | 2019-09-17 | 2019-09-17 | Drill bit switching device of multifunctional electric drill |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111299659A (en) * | 2020-04-13 | 2020-06-19 | 薛飞炀 | Wear-resistant chiseling machine |
| CN112676611A (en) * | 2021-01-13 | 2021-04-20 | 成都辰恒驰科技有限公司 | Electric drill easy to maintain and having drill bit fast switching function |
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| CN111299659B (en) * | 2020-04-13 | 2021-02-09 | 薛飞炀 | Wear-resistant chiseling machine |
| CN112676611A (en) * | 2021-01-13 | 2021-04-20 | 成都辰恒驰科技有限公司 | Electric drill easy to maintain and having drill bit fast switching function |
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