CN213034961U - Multifunctional handheld cutting machine - Google Patents

Abstract

The invention discloses a multifunctional handheld cutting machine, which comprises: the power part comprises a hand-held part and a rotary power part, and the rotary power part is arranged on the hand-held part; the handheld piece comprises a handheld shell, the handheld shell comprises a front handheld shell and a rear handheld shell, and the rear handheld shell is arranged on the front handheld shell; the multifunctional interface piece is arranged on the power piece and comprises a gear shell, a transmission piece and a fixing piece, and the gear shell is arranged on the front-end handheld shell; the transmission part comprises a transmission rod, a worm wheel, a worm and a first transmission plate, the transmission rod is arranged on the gear shell, the worm wheel and the first transmission plate are both arranged on the transmission rod, and the worm is arranged on the power motor; the mounting includes thrust ball bearing, rotary disk, rotary gear, rotatory shell, fixed block and protecting crust. The multifunctional cutting machine has the advantages of compact structure, light weight, high output power and convenient use, and can quickly replace the multifunctional joint piece so as to achieve the purpose of one machine with multiple functions and further improve the cutting efficiency.

Description

Multifunctional handheld cutting machine

Technical Field

The invention relates to the technical field of cutting machinery, in particular to a multifunctional handheld cutting machine.

Background

The handheld cutting machine is also called as a stone cutting machine and a marble machine, and is suitable for building decoration, stone processing, cutting and slotting of silicate-containing non-metal brittle materials such as terrazzo, marble, granite, glass, cement boards and the like. The corresponding saw blade is selected according to different cutting materials. The handheld cutting machine has the advantages of high cutting efficiency, good processing quality, simple and convenient use and low labor intensity. But current cutting machine cutting aircraft nose is fixed, need change different cutting machines when cutting different materials or different shape objects, is showing and is reducing cutting operation efficiency.

Disclosure of Invention

In order to overcome the defects, the invention provides a multifunctional handheld cutting machine, which specifically adopts the following technical scheme:

a multi-function hand-held cutting machine comprising:

the power piece comprises a hand piece and a rotary power piece, and the rotary power piece is arranged on the hand piece; the hand-held piece comprises a hand-held shell, the hand-held shell comprises a front end hand-held shell and a rear end hand-held shell, and the rear end hand-held shell is arranged on the front end hand-held shell; the rotary power part comprises a power motor;

the multifunctional interface piece is arranged on the power piece and comprises a gear shell, a transmission piece and a fixing piece, the gear shell is arranged on the front-end handheld shell, and the transmission piece and the fixing piece are both arranged on the gear shell; the transmission part comprises a transmission rod, a worm wheel, a worm and a first transmission plate, the transmission rod is arranged on the gear shell, the worm wheel and the first transmission plate are both arranged on the transmission rod, and the worm is arranged on the power motor; the fixed part comprises a thrust ball bearing, a rotating disk, a rotating gear, a rotating shell, a fixed block and a protective shell, wherein the thrust ball bearing and the protective shell are both arranged on the gear shell, the rotating disk is arranged on the transmission rod, the rotating shell is arranged on the thrust ball bearing, and the rotating gear and the fixed block are both arranged on the rotating disk;

the multifunctional joint piece is arranged on the multifunctional interface piece and comprises a support frame and a rotary transmission piece, the support frame is arranged on the gear shell, and the rotary transmission piece is arranged on the support frame; the supporting frame comprises a supporting bearing, the rotary transmission part comprises a rotary transmission shaft, a second transmission plate and a rotary transmission rod, the rotary transmission shaft is embedded on the supporting bearing, the second transmission plate is arranged on the rotary transmission shaft, and the rotary transmission rod is arranged on the second transmission plate; the fixing piece can fasten the multifunctional joint piece quickly so as to realize quick replacement of the multifunctional joint piece.

Preferably, the front-end handheld shell is barrel-shaped, one end face of the front-end handheld shell is closed, and the other end face of the front-end handheld shell is open; a switch through hole, a locking hole and a sliding extension rail are arranged on the side wall of the front-end handheld shell, a switch is embedded in the switch through hole, and the switch is electrically connected with the rotary power part; the plurality of locking holes are evenly divided into two groups, and the two groups of locking holes are symmetrically arranged on the side wall of the other end of the front-end handheld shell; the sliding extension rail is long and is provided with a plurality of strips, and the sliding extension rails are uniformly distributed along the circumferential direction of the front-end handheld shell.

Preferably, the rear-end hand-held shell is barrel-shaped, one end face of the rear-end hand-held shell is open, the other end face of the rear-end hand-held shell is closed, the inner diameter of the rear-end hand-held shell is larger than the outer diameter of the front-end hand-held shell, a sliding groove is formed in the inner side wall of the rear-end hand-held shell, the length of the sliding groove is the same as that of the rear-end hand-held shell, the sliding groove is matched with the sliding extension rail, a plurality of sliding grooves are formed in the sliding groove, and the plurality of sliding grooves are uniformly distributed along the circumferential direction of; one end of the rear-end handheld shell is sleeved on the other end of the front-end handheld shell, and the rear-end handheld shell can longitudinally slide along the sliding extension rail; the rear handheld shell is provided with a locking through hole and a lead sliding tube, and the diameter of the locking through hole is not smaller than that of the locking hole; the locking through holes are arranged in two numbers, the two locking through holes are symmetrically arranged on the side wall of one end of the rear handheld shell, and the locking through holes correspond to the locking holes in position.

Preferably, the hand piece further comprises a handle and a locking pin, both of which are arranged on the hand shell; the handle comprises a front handle and a rear handle, and the front handle and the rear handle are respectively and correspondingly arranged on the front handheld shell and the rear handheld shell one by one; the two locking pins are correspondingly arranged on the locking through holes one by one and used for locking the positions of the front-end handheld shell and the rear-end handheld shell, and particularly, the two locking pins are indexing pins or knob plungers; the rotary power part also comprises a power station, the power motor is arranged in the handheld shell, the power station is independently arranged, and the power station is connected with the power motor; the power motor is embedded in the front-end handheld shell, specifically, the power station is a high-frequency power station, and the power station is electrically connected with the power motor through a wire.

Preferably, the gear shell is cylindrical and tubular, two end faces of the gear shell are both closed, a first rotary through hole is formed in the circle center of each of the two end faces of the gear shell, and a rotary bearing is embedded in each first rotary through hole; a fixing plate is arranged on one end face of the gear shell, a fixing through hole and a plurality of fixing holes are formed in the fixing plate, the fixing through hole is located in the circle center of the fixing plate, the diameter of the fixing through hole is not smaller than that of the first rotating through hole, and the plurality of fixing holes are uniformly distributed in the edge of the fixing plate; the gear shell sets up on the handheld shell of front end one end lateral wall, and the gear shell with the handheld shell of front end link up.

Preferably, the transmission rod is tubular, the length of the transmission rod is greater than that of the gear shell, and the transmission rod is embedded in the rotary bearing; the worm gear is sleeved on the transmission rod, and the worm is fixedly arranged on a rotating shaft of the power motor; the first transmission plate is plate-shaped, a first transmission through hole and a transmission hole are formed in the first transmission plate, the first transmission through hole is located in the circle center of the first transmission plate, the inner diameter of the first transmission through hole is the same as the diameter of the transmission rod, and the first transmission plate is fixedly sleeved at one end of the transmission rod through the first transmission through hole; the transmission holes are arranged in a plurality and are uniformly distributed on the edge of the first transmission plate.

Preferably, the outer diameter of the thrust ball bearing is smaller than the outer diameter of the gear shell, the inner diameter of the thrust ball bearing is larger than the diameter of the transmission rod, the thrust ball bearing is sleeved outside the transmission rod, and the thrust ball bearing is arranged on the other end face of the gear shell; the outer diameter of the rotating disc is smaller than that of the thrust ball bearing, a second rotating through hole is formed in the circle center of the rotating disc, the diameter of the second rotating through hole is the same as that of the transmission rod, and the rotating disc is fixedly sleeved at the other end of the transmission rod through the second rotating through hole; the rotary disc is provided with a long arc-shaped through hole, and the inner side wall of one side of the long arc-shaped through hole is provided with insections.

Preferably, the rotating shell is in a circular groove shape, the inner diameter of the rotating shell is larger than the diameter of the rotating disc, the inner diameter of the rotating shell is smaller than the outer diameter of the thrust ball bearing, the notch of the rotating shell is fixedly arranged on the thrust ball bearing, and the rotating disc is positioned in the rotating shell; a third rotating through hole, a sliding strip through hole and a fastening through hole are formed in the bottom of the rotating shell groove, the diameter of the third rotating through hole is larger than that of the transmission rod, and the third rotating through hole is located at the circle center of the bottom of the rotating shell groove; the sliding strip through holes are arranged along the radial direction, a plurality of sliding strip through holes are arranged, and the sliding strip through holes are uniformly distributed around the same circle center; the minimum distance from the fastening through hole to the axis of the transmission rod is the same as the radius of the long arc-shaped through hole; and a hexagonal screw hole is formed in one end face of the rotating gear, one end of the rotating gear is embedded in the fastening through hole, the other end of the rotating gear is embedded in the long arc-shaped through hole, and the rotating gear is meshed with the insections.

Preferably, the fixing block is in a long strip block shape, the fixing block is provided with a plurality of fixing blocks, the fixing blocks are correspondingly embedded in the long strip through holes one by one, the fixing blocks can move in the long strip through holes along the radial direction, a sliding thread is arranged on one side wall of each fixing block, and the sliding thread is matched with the plane thread; the protective shell is in a circular groove shape, the inner diameter of the protective shell is larger than the outer diameter of the thrust ball bearing, the outer diameter of the protective shell is smaller than the diameter of the gear shell, the notch of the protective shell is fixedly arranged on the other end face of the gear shell, and the rotary shell is positioned in the protective shell; a fastening long arc-shaped through hole is formed in the bottom of the protective shell groove, and the circle center of the fastening long arc-shaped through hole is superposed with the circle center of the bottom of the protective shell groove; the radius of the fastening long arc-shaped through hole is the same as the distance from the fastening through hole to the circle center of the rotary shell; the fastening long arc-shaped through holes are uniformly distributed around the center of the bottom of the protective shell; the bottom of the protective shell groove is transparent.

Preferably, the support frame further comprises a support plate and a support rod, and the support rod and the support bearing are both arranged on the support plate; the supporting plate is plate-shaped, a supporting through hole is formed in the circle center of the supporting plate, the supporting bearing is embedded in the supporting through hole, the diameter of the supporting rod is the same as that of the fixing hole, the supporting rod is vertically arranged on the supporting plate, and the distance from the supporting rod to the circle center of the supporting plate is the same as that from the fixing hole to the circle center of the fixing plate; the supporting plates are arranged on the supporting plates, and the supporting rods are uniformly distributed on the supporting plates; the supporting rod corresponds to the fixing hole in position, so that the supporting rod can be inserted into the fixing hole; an axial thread is arranged on the side wall of one end of the rotating transmission shaft, a nut is sleeved on the axial thread, and the nut is matched with the axial thread;

the diameter of the second transmission plate is smaller than the distance between the support rod and the circle center of the support plate, a second transmission through hole is formed in the circle center of the second transmission plate, and the second transmission plate is fixedly sleeved on the rotary transmission shaft through the second transmission through hole; the diameter of the rotary transmission rod is the same as that of the transmission hole, the rotary transmission rod is vertically and fixedly arranged on the second transmission plate, and the distance from the rotary transmission rod to the circle center of the second transmission plate is the same as the distance from the transmission hole to the circle center of the first transmission plate; the number of the rotary transmission rods is multiple, and the rotary transmission rods are uniformly distributed on the second transmission plate; the rotary transmission rod corresponds to the transmission hole in position, so that the rotary transmission rod can be inserted into the transmission hole.

The invention at least comprises the following beneficial effects:

1) the multifunctional handheld cutting machine has the advantages of compact structure, light weight, high output power and convenient use, and can quickly replace the multifunctional joint piece so as to achieve the purpose of one machine with multiple functions and further improve the cutting efficiency;

2) the multifunctional handheld cutting machine is provided with the multifunctional interface part, the multifunctional interface part comprises a transmission part and a fixing part, the transmission part comprises a transmission rod, a worm wheel, a worm and a first transmission plate, the fixing part comprises a thrust ball bearing, a rotating disc, a rotating gear, a rotating shell, a fixing block and a protecting shell, the transmission part can transmit the rotating force of a rotating motor to the multifunctional interface part through the transmission rod through the worm wheel and the worm, the worm wheel and the worm can increase the torque of the multifunctional handheld cutting machine, and further the output power of the multifunctional handheld cutting machine is increased; the fixing piece can quickly fasten the multifunctional joint piece through the rotating disc, the rotating gear, the rotating shell and the fixing block, so that the purpose of one machine with multiple functions is achieved, and the cutting efficiency is improved;

3) the multifunctional handheld cutting machine is provided with the multifunctional joint piece, the multifunctional joint piece comprises a support frame and a rotary transmission piece, the rotary transmission piece comprises a rotary transmission shaft, a second transmission plate and a rotary transmission rod, the rotary transmission shaft is convenient for fastening the multifunctional joint piece, and the rotary transmission shaft can fix a disc saw, a trepan or a long chain saw.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic view of the left side of the multi-functional hand-held cutting machine according to the present invention;

FIG. 2 is a schematic diagram of the right side perspective of the multifunctional handheld cutter of the present invention;

FIG. 3 is a schematic longitudinal sectional perspective view of the multi-functional hand-held cutting machine of the present invention;

FIG. 4 is a front view of the multi-function hand held cutter of the present invention;

FIG. 5 is a front elevation view in longitudinal section of the multi-function hand held cutting machine of the present invention;

FIG. 6 is a schematic sectional view A-A of the multifunctional hand-held cutting machine of the present invention shown in FIG. 4;

FIG. 7 is a schematic view of the left side of the multifunctional hand-held cutting machine of the present invention with the protective shell removed;

FIG. 8 is a schematic perspective view of the multifunctional adapter member of the multifunctional hand-held cutting machine of the present invention from the left side;

FIG. 9 is a schematic perspective view of the right side of the multi-function joint assembly of the multi-function hand held cutting machine of the present invention;

fig. 10 is a front view of the multi-function joint member of the multi-function hand-held cutting machine of the present invention.

Wherein: 1-locking pin, 2-front-end hand-held case, 3-rear-end hand-held case, 4-switch, 5-locking hole, 6-sliding extension rail, 8-wire sliding tube, 9-front-side grip, 10-rear-side grip, 11-power motor, 12-gear case, 13-rotary bearing, 14-fixed plate, 15-fixed hole, 16-transmission rod, 17-worm wheel, 18-worm, 19-first transmission plate, 20-transmission hole, 21-thrust ball bearing, 22-rotary disk, 23-rotary gear, 24-rotary case, 25-fixed block, 26-protective case, 32-support plate, 33-support rod, 34-support bearing, 35-rotary transmission shaft, 36-second transmission plate, 37-rotation transmission rod, 38-wire, 39-circular saw, 40-nut.

Detailed Description

Technical solutions of the present invention will be described in detail below by way of embodiments with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, B exists alone, and A and B exist at the same time, and the term "/and" is used herein to describe another association object relationship, which means that two relationships may exist, for example, A/and B, may mean: a alone, and both a and B alone, and further, the character "/" in this document generally means that the former and latter associated objects are in an "or" relationship.

A multi-functional hand-held cutting machine, according to fig. 1-10, comprises a power member, a multi-functional interface member arranged on the power member, and a multi-functional adapter member arranged on the multi-functional interface member. The power part comprises a hand piece and a rotary power part, and the rotary power part is arranged on the hand piece. The hand piece comprises a hand shell, a handle and a locking pin 1, wherein the handle and the locking pin 1 are both arranged on the hand shell.

The handheld shell comprises a front-end handheld shell 2 and a rear-end handheld shell 3, wherein the rear-end handheld shell 3 is arranged on the front-end handheld shell 2. The front-end handheld shell 2 is barrel-shaped, one end face of the front-end handheld shell 2 is closed, and the other end face of the front-end handheld shell is open. The side wall of the front-end handheld shell 2 is provided with a switch through hole, a locking hole 5 and a sliding extension rail 6, a switch 4 is embedded in the switch through hole, and the switch 4 is electrically connected with the rotary power part. The locking holes 5 are ten, the ten locking holes 5 are equally divided into two groups, and the two groups of locking holes 5 are symmetrically arranged on the side wall of the other end of the front-end handheld shell 2. The sliding extension rail 6 is long, the length of the sliding extension rail 6 is smaller than the length of the front-end handheld shell 2, the number of the sliding extension rails 6 is three, the sliding extension rails 6 are arranged along the circumference of the front-end handheld shell 2 and are evenly distributed, and the longitudinal line of the sliding extension rail 6 is parallel to the axis of the front-end handheld shell 2.

Handheld shell 3 of rear end is the tubbiness, the handheld shell 3 one end face of rear end is open, and another end face is sealed, the handheld shell 3 internal diameters of rear end is greater than 2 external diameters of the handheld shell of front end, be provided with the sliding tray on the handheld shell 3 inside walls of rear end, sliding tray length with the handheld shell 3 length of rear end is the same, the sliding tray with slide extension rail 6 cooperation, the sliding tray is provided with three, three the sliding tray is followed 3 inside walls circumference evenly distributed of the handheld shell of rear end, and the sliding tray longitudinal line with the handheld shell 3 axis of rear end is parallel. Handheld 3 one end suits of shell of rear end are in 2 other ends of the handheld shell of front end are gone up, and handheld shell of rear end 3 can follow longitudinal sliding in the slip extension rail 6 to change handheld shell length, improve user's comfort in use.

The rear handheld shell 3 is provided with a locking through hole and a lead sliding tube 8, and the diameter of the locking through hole is not smaller than that of the locking hole 5. The locking through holes are arranged in two numbers, the two locking through holes are symmetrically arranged on the side wall of one end of the rear-end handheld shell 3, and the locking through holes correspond to the locking holes 5 in position. The lead sliding tube 8 is tubular, and the lead sliding tube 8 is used for sleeving the lead 38 of the rotary power part. The handle comprises a front handle 9 and a rear handle 10, wherein the front handle 9 and the rear handle 10 are respectively and correspondingly arranged on the front handheld shell 2 and the rear handheld shell 3 one by one. The locking pin 1 is provided with two, two locking pin 1 corresponds the setting one by one on the locking through hole, locking pin 1 is used for holding shell 2 and the handheld shell 3 position locking of rear end with the front end, prevents that handheld shell length change influences the cutting and causes the cutting accident when the cutting operation. Specifically, the locking pin 1 is an indexing pin or a knob plunger.

The rotary power part comprises a power motor 11 and a power station (not shown in the figure), the power motor 11 is arranged in the handheld shell, the power station is independently arranged, and the power station is connected with the power motor 11. The power motor 11 is embedded in the front-end handheld shell 2, the power station is a high-frequency power station, the power station is electrically connected with the power motor 11 through a lead 38, and the power station can provide a high-frequency power supply for the power motor 11.

The multifunctional interface piece comprises a gear shell 12, a transmission piece and a fixing piece, wherein the gear shell 12 is arranged on the handheld shell, and the transmission piece and the fixing piece are arranged on the gear shell 12. The gear shell 12 is in a cylindrical tube shape, the two end faces of the gear shell 12 are sealed, first rotating through holes are formed in the circle centers of the two end faces of the gear shell 12, and rotating bearings 13 are embedded in the first rotating through holes. Be provided with fixed plate 14 on the 12 terminal surfaces of gear shell, be provided with fixed through hole and fixed orifices 15 on the fixed plate 14, fixed through hole is located the 14 centre of a circle departments of fixed plate, fixed through hole diameter is not less than first rotatory through hole diameter, fixed orifices 15 are provided with threely, and is three fixed orifices 15 evenly distributed is in fixed plate 14 edges. The gear shell 12 is arranged on one end side wall of the front end handheld shell 2, and the gear shell 12 is communicated with the front end handheld shell 2.

The transmission part comprises a transmission rod 16, a worm wheel 17, a worm 18 and a first transmission plate 19, the transmission rod 16 is arranged on the gear shell 12, the worm wheel 17 and the first transmission plate 19 are both arranged on the transmission rod 16, and the worm 18 is arranged on the power motor 11. The transmission rod 16 is tubular, the length of the transmission rod 16 is greater than that of the gear shell 12, and the transmission rod 16 is embedded in the rotary bearing 13. The worm wheel 17 is sleeved on the transmission rod 16, the worm wheel 17 is positioned in the gear shell 12, the worm 18 is fixedly arranged on the rotating shaft of the power motor 11, and the axis of the transmission rod 16 is overlapped with the axis of the rotating shaft of the power motor 11. The first transmission plate 19 is plate-shaped, a first transmission through hole and a transmission hole 20 are formed in the first transmission plate 19, the first transmission through hole is located in the circle center of the first transmission plate 19, the inner diameter of the first transmission through hole is the same as the diameter of the transmission rod 16, and the first transmission plate 19 is fixedly sleeved at one end of the transmission rod 16 through the first transmission through hole. The number of the transmission holes 20 is four, and the four transmission holes 20 are uniformly distributed at the edge of the first transmission plate 19.

The fixed part comprises a thrust ball bearing 21, a rotating disc 22, a rotating gear 23, a rotating shell 24, a fixed block 25 and a protective shell 26, wherein the thrust ball bearing 21 and the protective shell 26 are arranged on the gear shell 12, the rotating disc 22 is arranged on the transmission rod 16, the rotating shell 24 is arranged on the thrust ball bearing 21, and the rotating gear 23 and the fixed block 25 are arranged on the rotating disc 22.

The outer diameter of the thrust ball bearing 21 is smaller than the outer diameter of the gear shell 12, the inner diameter of the thrust ball bearing 21 is larger than the diameter of the transmission rod 16, the thrust ball bearing 21 is sleeved outside the transmission rod 16, and the thrust ball bearing 21 is arranged on the other end face of the gear shell 12. The outer diameter of the rotating disc 22 is smaller than that of the thrust ball bearing 21, a second rotating through hole is formed in the circle center of the rotating disc 22, the diameter of the second rotating through hole is the same as that of the transmission rod 16, and the rotating disc 22 is fixedly sleeved at the other end of the transmission rod 16 through the second rotating through hole. The other end face of the rotating disc 22 is provided with a plane thread. The rotating disc 22 is provided with a long arc-shaped through hole, and the inner side wall of one side of the long arc-shaped through hole is provided with insections.

The rotating shell 24 is in a circular groove shape, the inner diameter of the rotating shell 24 is larger than the diameter of the rotating disc 22, the inner diameter of the rotating shell 24 is smaller than the outer diameter of the thrust ball bearing 21, the notch of the rotating shell 24 is fixedly arranged on the thrust ball bearing 21, and the rotating disc 22 is positioned in the rotating shell 24. And a third rotary through hole, a sliding strip-shaped through hole and a fastening through hole are formed in the bottom of the rotary shell 24, the diameter of the third rotary through hole is larger than that of the transmission rod 16, and the third rotary through hole is positioned at the circle center of the bottom of the rotary shell 24. The rectangular through hole that slides radially sets up, the rectangular through hole that slides is provided with threely, three the rectangular through hole that slides centers on same centre of a circle evenly distributed. The minimum distance from the fastening through hole to the axis of the transmission rod 16 is the same as the radius of the long arc-shaped through hole. A hexagonal screw hole is formed in one end face of the rotating gear 23, one end of the rotating gear 23 is embedded in the fastening through hole, the other end of the rotating gear 23 is embedded in the long arc-shaped through hole, the rotating gear 23 is meshed with the insections, and when the rotating gear 23 is screwed, the rotating gear 23 pushes the rotating disc 22 to move circumferentially along the axis of the transmission rod 16 through the insections.

Fixed block 25 is rectangular cubic, fixed block 25 is provided with three, fixed block 25 corresponds one by one and inlays the dress and be in rectangular through hole, and fixed block 25 can in rectangular through hole along radial motion, be provided with the slip screw thread on the 25 lateral walls of fixed block, the slip screw thread with plane screw-thread fit. The protective shell 26 is in a circular groove shape, the inner diameter of the protective shell 26 is larger than the outer diameter of the thrust ball bearing 21, the outer diameter of the protective shell 26 is smaller than the diameter of the gear shell 12, a notch of the protective shell 26 is fixedly arranged on the other end face of the gear shell 12, and the rotating shell 24 is located in the protective shell 26. A fastening long arc-shaped through hole is formed in the bottom of the protective shell 26, the circle center of the fastening long arc-shaped through hole coincides with the circle center of the bottom of the protective shell 26, and the radius of the fastening long arc-shaped through hole is the same as the distance from the fastening through hole to the circle center of the rotary shell 24. Three fastening long arc-shaped through holes are formed in the protective shell 26, and are uniformly distributed around the center of the circle of the bottom of the protective shell. The groove bottom of the protective shell 26 is transparent, so that the fixing piece can fix the rotating transmission shaft 35.

The multifunctional joint piece comprises a support frame and a rotary transmission piece, the support frame is arranged on the gear shell 12, and the rotary transmission piece is arranged on the support frame. The support frame comprises a support plate 32, a support rod 33 and a support bearing 34, wherein the support rod 33 and the support bearing 34 are arranged on the support plate 32. The supporting plate 32 is plate-shaped, a supporting through hole is formed in the center of the supporting plate 32, and the supporting bearing 34 is embedded in the supporting through hole. The diameter of the support rod 33 is the same as that of the fixing hole 15, the support rod 33 is vertically arranged on the support plate 32, and the distance between the centers of circles of the support rod 33 and the support plate 32 is the same as that between the centers of circles of the fixing hole 15 and the fixing plate 14. The number of the support rods 33 is three, and the three support rods 33 are uniformly distributed on the support plate 32. The support rod 33 corresponds to the fixing hole 15 in position, so that the support rod 33 can be inserted into the fixing hole 15.

The rotating transmission member comprises a rotating transmission shaft 35, a second transmission plate 36 and a rotating transmission rod 37, the rotating transmission shaft 35 is embedded on the support bearing 34, the second transmission plate 36 is arranged on the rotating transmission shaft 35, and the rotating transmission rod 37 is arranged on the second transmission plate 36. The side wall of one end of the rotating transmission shaft 35 is provided with an axial thread, the axial thread is sleeved with a nut 40, and the nut 40 is matched with the axial thread. When it is desired to assemble the circular saw 39, trepan or chain saw, it is only necessary to fit the circular saw 39, trepan or chain saw over the axial thread and to secure the circular saw 39, trepan or chain saw to the rotary drive shaft 35 by means of the nut 40.

The diameter of the second transmission plate 36 is smaller than the distance between the circle centers of the support rods 33 and the support plate 32, a second transmission through hole is formed in the circle center of the second transmission plate 36, and the second transmission plate 36 is fixedly sleeved on the rotating transmission shaft 35 through the second transmission through hole. The diameter of the rotary transmission rod 37 is the same as that of the transmission hole 20, the rotary transmission rod 37 is vertically and fixedly arranged on the second transmission plate 36, and the distance between the circle centers of the rotary transmission rod 37 and the second transmission plate 36 is the same as that between the circle centers of the transmission hole 20 and the first transmission plate 19. The number of the rotation transmission rods 37 is three, and the three rotation transmission rods 37 are uniformly distributed on the second transmission plate 36. The rotation transmission rod 37 corresponds to the transmission hole 20, so that the rotation transmission rod 37 can be inserted into the transmission hole 20.

The multifunctional handheld cutting machine is at least provided with three sets of multifunctional joint pieces, and a circular saw 39, a circular saw and a long chain saw are sleeved on the transmission shaft on the multifunctional joint pieces one by one correspondingly. When it is desired to perform concrete cutting using the circular saw 39, first, the circular saw 39 is fitted over one end of the rotary drive shaft 35 of the multi-function joint member and fastened by a nut 40. Next, the other end of the rotation transmission shaft 35 of the multi-function joint is inserted into the transmission rod while the support rod 33 is inserted into the fixing hole 15 and the rotation transmission rod 37 is inserted into the transmission hole 20. And thirdly, rotating the rotating gear 23 to rotate the rotating disc 22, wherein the rotating disc 22 pushes the fixed block 25 to move towards the circle center direction through the plane thread until the fixed block 25 firmly fastens the rotating transmission shaft 35, so that the fastening of the multifunctional connector is completed. When the cutting machine head needs to be replaced, only the multifunctional connector piece needs to be replaced.

The invention has the following beneficial technical effects:

the multifunctional handheld cutting machine has the advantages of compact structure, light weight, high output power and convenient use, and can quickly replace the multifunctional joint piece so as to achieve the purpose of one machine with multiple functions and further improve the cutting efficiency.

The multifunctional handheld cutting machine is provided with the multifunctional interface part, the multifunctional interface part comprises a transmission part and a fixed part, the transmission part comprises a transmission rod, a worm wheel 17, a worm 18 and a first transmission plate 19, the fixed part comprises a thrust ball bearing 21, a rotating disc 22, a rotating gear 23, a rotating shell 24, a fixed block 25 and a protective shell 26, the transmission part can transmit the rotating force of a rotating motor to the multifunctional interface part through the transmission rod through the worm wheel 17 and the worm 18, and the worm wheel 17 and the worm 18 can increase the torque of the multifunctional handheld cutting machine so as to increase the output power of the multifunctional handheld cutting machine; the fixing member can realize rapid fastening of the multifunctional joint member through the rotating disc 22, the rotating gear 23, the rotating shell 24 and the fixing block 25 to achieve the purpose of one machine with multiple functions, thereby improving the cutting efficiency.

The multifunctional handheld cutting machine is provided with the multifunctional joint piece, the multifunctional joint piece comprises a support frame and a rotary transmission piece, the rotary transmission piece comprises a rotary transmission shaft 35, a second transmission plate 36 and a rotary transmission rod 37, the rotary transmission shaft 35 is convenient for fastening the multifunctional joint piece, and the rotary transmission shaft 35 can fix a disc saw, a ring saw or a long chain saw.

While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.

Claims (10)

1. A multi-functional hand-held cutting machine, comprising:

the power piece comprises a hand piece and a rotary power piece, and the rotary power piece is arranged on the hand piece; the hand-held piece comprises a hand-held shell, the hand-held shell comprises a front end hand-held shell and a rear end hand-held shell, and the rear end hand-held shell is arranged on the front end hand-held shell; the rotary power part comprises a power motor;

the multifunctional interface piece is arranged on the power piece and comprises a gear shell, a transmission piece and a fixing piece, the gear shell is arranged on the front-end handheld shell, and the transmission piece and the fixing piece are both arranged on the gear shell; the transmission part comprises a transmission rod, a worm wheel, a worm and a first transmission plate, the transmission rod is arranged on the gear shell, the worm wheel and the first transmission plate are both arranged on the transmission rod, and the worm is arranged on the power motor; the fixed part comprises a thrust ball bearing, a rotating disk, a rotating gear, a rotating shell, a fixed block and a protective shell, wherein the thrust ball bearing and the protective shell are both arranged on the gear shell, the rotating disk is arranged on the transmission rod, the rotating shell is arranged on the thrust ball bearing, and the rotating gear and the fixed block are both arranged on the rotating disk;

the multifunctional joint piece is arranged on the multifunctional interface piece and comprises a support frame and a rotary transmission piece, the support frame is arranged on the gear shell, and the rotary transmission piece is arranged on the support frame; the supporting frame comprises a supporting bearing, the rotary transmission part comprises a rotary transmission shaft, a second transmission plate and a rotary transmission rod, the rotary transmission shaft is embedded on the supporting bearing, the second transmission plate is arranged on the rotary transmission shaft, and the rotary transmission rod is arranged on the second transmission plate; the fixing piece can fasten the multifunctional joint piece quickly so as to realize quick replacement of the multifunctional joint piece.

2. The multifunctional hand-held cutting machine according to claim 1, characterized in that the front end hand-held housing is barrel-shaped, and one end face of the front end hand-held housing is closed, and the other end face is open; a switch through hole, a locking hole and a sliding extension rail are arranged on the side wall of the front-end handheld shell, a switch is embedded in the switch through hole, and the switch is electrically connected with the rotary power part; the plurality of locking holes are evenly divided into two groups, and the two groups of locking holes are symmetrically arranged on the side wall of the other end of the front-end handheld shell; the sliding extension rail is long and is provided with a plurality of strips, and the sliding extension rails are uniformly distributed along the circumferential direction of the front-end handheld shell.

3. The multifunctional handheld cutter according to claim 2, wherein the rear handheld shell is barrel-shaped, one end face of the rear handheld shell is open, the other end face of the rear handheld shell is closed, the inner diameter of the rear handheld shell is larger than the outer diameter of the front handheld shell, a sliding groove is formed in the inner side wall of the rear handheld shell, the length of the sliding groove is the same as that of the rear handheld shell, the sliding groove is matched with the sliding extension rail, a plurality of sliding grooves are formed, and the plurality of sliding grooves are evenly distributed along the circumferential direction of the inner side wall of the rear handheld shell; one end of the rear-end handheld shell is sleeved on the other end of the front-end handheld shell, and the rear-end handheld shell can longitudinally slide along the sliding extension rail; the rear handheld shell is provided with a locking through hole and a lead sliding tube, and the diameter of the locking through hole is not smaller than that of the locking hole; the locking through holes are arranged in two numbers, the two locking through holes are symmetrically arranged on the side wall of one end of the rear handheld shell, and the locking through holes correspond to the locking holes in position.

4. The multi-functional hand-held cutting machine according to claim 2 or 3, characterized in that the hand piece further comprises a grip and a locking pin, both disposed on the hand-held housing; the handle comprises a front handle and a rear handle, and the front handle and the rear handle are respectively and correspondingly arranged on the front handheld shell and the rear handheld shell one by one; the two locking pins are correspondingly arranged on the locking through holes one by one and are used for locking the positions of the front-end handheld shell and the rear-end handheld shell, and the locking pins are indexing pins or knob plungers; the rotary power part also comprises a power station, the power motor is arranged in the handheld shell, the power station is independently arranged, and the power station is connected with the power motor; the power motor is embedded in the front-end handheld shell, the power station is a high-frequency power station, and the power station is electrically connected with the power motor through a wire.

5. The multifunctional handheld cutting machine according to any one of claims 1 to 3, wherein the gear housing is in a cylindrical tube shape, two end faces of the gear housing are both closed, a first rotating through hole is formed in the center of each of the two end faces of the gear housing, and a rotating bearing is embedded in each first rotating through hole; a fixing plate is arranged on one end face of the gear shell, a fixing through hole and a plurality of fixing holes are formed in the fixing plate, the fixing through hole is located in the circle center of the fixing plate, the diameter of the fixing through hole is not smaller than that of the first rotating through hole, and the plurality of fixing holes are uniformly distributed in the edge of the fixing plate; the gear shell sets up on the handheld shell of front end one end lateral wall, and the gear shell with the handheld shell of front end link up.

6. The multi-functional hand-held cutting machine according to claim 5, wherein the drive rod is tubular, the drive rod is longer than the gear housing, and the drive rod is embedded in the rotary bearing; the worm gear is sleeved on the transmission rod, and the worm is fixedly arranged on a rotating shaft of the power motor; the first transmission plate is plate-shaped, a first transmission through hole and a transmission hole are formed in the first transmission plate, the first transmission through hole is located in the circle center of the first transmission plate, the inner diameter of the first transmission through hole is the same as the diameter of the transmission rod, and the first transmission plate is fixedly sleeved at one end of the transmission rod through the first transmission through hole; the transmission holes are arranged in a plurality and are uniformly distributed on the edge of the first transmission plate.

7. The multi-functional hand-held cutting machine according to claim 6, characterized in that the outer diameter of the thrust ball bearing is smaller than the outer diameter of the gear housing, the inner diameter of the thrust ball bearing is larger than the diameter of the transmission rod, the thrust ball bearing is sleeved outside the transmission rod, and the thrust ball bearing is provided on the other end surface of the gear housing; the outer diameter of the rotating disc is smaller than that of the thrust ball bearing, a second rotating through hole is formed in the circle center of the rotating disc, the diameter of the second rotating through hole is the same as that of the transmission rod, and the rotating disc is fixedly sleeved at the other end of the transmission rod through the second rotating through hole; the rotary disc is provided with a long arc-shaped through hole, and the inner side wall of one side of the long arc-shaped through hole is provided with insections.

8. The multi-functional hand-held cutting machine according to claim 7, wherein the rotating housing is in the form of a circular trough, the rotating housing inner diameter is greater than the rotating disc diameter, the rotating housing inner diameter is less than the thrust ball bearing outer diameter, the rotating housing slot is fixedly disposed on the thrust ball bearing, and the rotating disc is located within the rotating housing; a third rotating through hole, a sliding strip through hole and a fastening through hole are formed in the bottom of the rotating shell groove, the diameter of the third rotating through hole is larger than that of the transmission rod, and the third rotating through hole is located at the circle center of the bottom of the rotating shell groove; the sliding strip through holes are arranged along the radial direction, a plurality of sliding strip through holes are arranged, and the sliding strip through holes are uniformly distributed around the same circle center; the minimum distance from the fastening through hole to the axis of the transmission rod is the same as the radius of the long arc-shaped through hole; and a hexagonal screw hole is formed in one end face of the rotating gear, one end of the rotating gear is embedded in the fastening through hole, the other end of the rotating gear is embedded in the long arc-shaped through hole, and the rotating gear is meshed with the insections.

9. The multifunctional hand-held cutting machine according to claim 8, wherein the fixed block is in the shape of an elongated block, the fixed block is provided with a plurality of fixed blocks, the fixed blocks are correspondingly embedded in the sliding elongated through holes one by one, the fixed blocks can move in the radial direction in the sliding elongated through holes, a side wall of each fixed block is provided with a sliding thread, and the sliding thread is matched with the planar thread; the protective shell is in a circular groove shape, the inner diameter of the protective shell is larger than the outer diameter of the thrust ball bearing, the outer diameter of the protective shell is smaller than the diameter of the gear shell, the notch of the protective shell is fixedly arranged on the other end face of the gear shell, and the rotary shell is positioned in the protective shell; a fastening long arc-shaped through hole is formed in the bottom of the protective shell groove, and the circle center of the fastening long arc-shaped through hole is superposed with the circle center of the bottom of the protective shell groove; the radius of the fastening long arc-shaped through hole is the same as the distance from the fastening through hole to the circle center of the rotary shell; the fastening long arc-shaped through holes are uniformly distributed around the center of the bottom of the protective shell; the bottom of the protective shell groove is transparent.

10. The multi-functional hand-held cutting machine of claim 6 wherein the support frame further comprises a support plate and a support rod, the support rod and the support bearing both being disposed on the support plate; the supporting plate is plate-shaped, a supporting through hole is formed in the circle center of the supporting plate, the supporting bearing is embedded in the supporting through hole, the diameter of the supporting rod is the same as that of the fixing hole, the supporting rod is vertically arranged on the supporting plate, and the distance from the supporting rod to the circle center of the supporting plate is the same as that from the fixing hole to the circle center of the fixing plate; the supporting plates are arranged on the supporting plates, and the supporting rods are uniformly distributed on the supporting plates; the supporting rod corresponds to the fixing hole in position, so that the supporting rod can be inserted into the fixing hole; an axial thread is arranged on the side wall of one end of the rotating transmission shaft, a nut is sleeved on the axial thread, and the nut is matched with the axial thread;

the diameter of the second transmission plate is smaller than the distance between the support rod and the circle center of the support plate, a second transmission through hole is formed in the circle center of the second transmission plate, and the second transmission plate is fixedly sleeved on the rotary transmission shaft through the second transmission through hole; the diameter of the rotary transmission rod is the same as that of the transmission hole, the rotary transmission rod is vertically and fixedly arranged on the second transmission plate, and the distance from the rotary transmission rod to the circle center of the second transmission plate is the same as the distance from the transmission hole to the circle center of the first transmission plate; the number of the rotary transmission rods is multiple, and the rotary transmission rods are uniformly distributed on the second transmission plate; the rotary transmission rod corresponds to the transmission hole in position, so that the rotary transmission rod can be inserted into the transmission hole.

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