Primary-secondary saw

Abstract

The utility model discloses a mother-son saw which comprises a frame body, a first motor and a first lead screw, a platen is connected to the top of the frame body, the first motor is vertically connected to the frame body in a sliding mode, and the first lead screw is vertically arranged on one side of the first motor and rotationally connected with the frame body. A first nut fixedly connected with the first motor is arranged on the first lead screw in a threaded fit mode, a first screwing part is arranged at the top of the first lead screw, and a first through hole corresponding to the first screwing part is formed in the platen. According to the technical scheme, the driving shaft of the first motor is used for being connected with the saw blade, when the height of the saw blade needs to be adjusted, the adjusting end of the adjusting tool penetrates through the first through hole to be matched with the first screwing part and can drive the first screwing part to rotate so that the first lead screw can rotate, and the first lead screw rotates to drive the first nut to ascend and descend; the first nut ascends and descends to drive the first motor to link the saw blade to ascend and descend, the height of the saw blade is adjusted, and adjustment is simple, convenient, rapid and time-saving.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting, in particular to a mother-daughter saw. Background Art

[0002] A mother-daughter saw refers to a sawing device provided with a daughter saw (small saw blade) and a mother saw (large saw blade). The daughter saw is mainly responsible for shallow cutting and marking, and the mother saw is mainly responsible for cutting. The daughter saw is leveled with the mother saw as a reference. For the height adjustment of the saw blade on the existing single-saw blade sawing machine or the mother-daughter saw, generally, the fixing bolts of the motor under the equipment table board are loosened first, and then the height is adjusted. After the height adjustment is completed, the fixing bolts are tightened. Since the locking bolts are under the table board, the adjustment is difficult and time-consuming. Content of the Utility Model

[0003] In order to overcome the existing technical defects, the purpose of the utility model is to provide a mother-daughter saw to solve the above technical problems.

[0004] The technical solution adopted by the utility model to solve the technical problems is as follows:

[0005] According to one aspect of the utility model, a mother-daughter saw is designed, including: a frame body, a first motor and a first lead screw. The top of the frame body is connected with a table board. The first motor is vertically slidably connected to the frame body. The first lead screw is vertically arranged on one side of the first motor and rotatably connected to the frame body. A first nut fixedly connected to the first motor is in threaded cooperation with the first lead screw. A first screwing part is arranged at the top of the first lead screw. A first through hole corresponding to the first screwing part is arranged on the table board.

[0006] Adopting the above technical solution, the driving shaft of the first motor is used to connect the saw blade. When the height of the saw blade needs to be adjusted, the adjusting end of the adjusting tool passes through the first through hole and cooperates with the first screwing part and can drive the first screwing part to rotate to make the first lead screw rotate. The rotation of the first lead screw drives the first nut to lift and lower. The lifting and lowering of the first nut drives the first motor to drive the saw blade to lift and lower, realizing the adjustment of the height of the saw blade. The adjustment is simple, convenient, fast and time-saving.

[0007] In order to better solve the above technical defects, the utility model also has a better technical solution:

[0008] In some embodiments, a housing is provided on the front side of the frame body. A second motor is vertically slidably fitted in the housing, and a second lead screw is vertically rotatably fitted in the housing. A second nut fixedly connected to the second motor is threadedly fitted on the second lead screw. A second screwing portion is provided at the upper end of the second lead screw. A second through hole corresponding to the second screwing portion is provided on the table board. The drive shaft of the second motor is used to connect the saw blade. When it is necessary to adjust the height of the saw blade, the adjusting end of the adjusting tool passes through the second through hole and cooperates with the second screwing portion and can drive the second screwing portion to rotate, so that the second lead screw rotates. The rotation of the second lead screw drives the second nut to move up and down, and the up and down movement of the second nut drives the second motor to drive the saw blade to move up and down, realizing the adjustment of the height of the saw blade. The adjustment is simple, convenient, fast and time-saving.

[0009] In some embodiments, brackets connected to the frame body are respectively provided on the left side, right side and lower side of the housing. The adjusting portions on the three brackets respectively pass through the avoidance holes on the housing and extend into the frame body. The rod portions of the three leveling bolts are movably fitted with three moving holes on the housing and are respectively threadedly fitted with the threaded holes on the three adjusting portions. A driving member is connected to the leveling bolt, and when the leveling bolt is screwed, the housing can be driven to move relative to the adjusting portion. When the leveling bolt at the left end or right end of the housing is screwed, the left end or right end of the housing can be driven to swing back and forth. The front and back swing of the left end or right end of the housing drives the second motor to swing. The drive shaft of the second motor is used to connect the saw blade, so that the left end or right end of the saw blade can be swung and adjusted, thereby realizing the adjustment of the straightness of the saw blade in the transverse direction; when the leveling bolts on the left side and right side are simultaneously screwed in the same direction, the second motor can be driven to move back and forth as a whole, realizing the adjustment of the saw blade moving back and forth as a whole; when the leveling bolt at the lower end of the housing is screwed, the lower end of the housing can be driven to swing back and forth. The front and back swing of the lower end of the housing drives the second motor to swing. The drive shaft of the second motor is used to connect the saw blade, so that the lower end of the saw blade can be swung and adjusted, thereby realizing the adjustment of the perpendicularity of the saw blade in the vertical direction. The second motor and the saw blade can be adjusted and leveled in all directions through three leveling bolts. The adjustment is simple and fast.

[0010] In some embodiments, a microswitch electrically connected to the controller and protruding above it is provided on the table board. A cover body is connected to the rear side of the frame body. A dust accumulation cavity is formed between the cover body and the frame body. A pipe joint communicated with the dust accumulation cavity is connected to the frame body. The controller is used to be electrically connected to a vacuum cleaner, and the suction pipe of the vacuum cleaner is used to be connected to the pipe joint. The microswitch is used to control the start and stop of the vacuum cleaner. When the wood board is placed on the table board for cutting, the wood board will press the microswitch to trigger it. After the microswitch is triggered, the controller controls the vacuum cleaner to start. When the wood board leaves the microswitch, the microswitch resets, and the controller controls the vacuum cleaner to close, preventing the vacuum cleaner from continuing to work and making a large noise when there is no wood board to cut, and reducing noise pollution.

[0011] In some embodiments, the lower end of the first lead screw is rotatably connected to a first bearing seat fixed on the frame body. A seat body fixed to the frame body is provided below the first bearing seat. The lower end of the first lead screw extends below the seat body and is fixedly connected to a first locking disc. The ball head of the first ball head plunger fixedly connected to the first locking disc cooperates with a plurality of first locking portions circumferentially arranged on the seat body to limit the rotation of the first locking disc. Thus, when an adjusting tool is used to drive the first lead screw to rotate, the first locking disc can be driven to rotate. When the first lead screw stops rotating, the ball head of the ball head plunger on the first locking disc cooperates with the first locking portion on the seat body, which can limit the rotation of the first locking disc, so as to limit the rotation of the first lead screw and prevent the height of the saw blade from changing due to the rotation of the first lead screw caused by the vibration during sawing of the saw blade.

[0012] In some embodiments, the lower end of the second lead screw extends below the housing and is fixedly connected to a second locking disc. The ball head of the ball head plunger fixedly connected to the second locking disc cooperates with a plurality of second locking portions circumferentially arranged on the housing to limit the rotation of the second locking disc. Thus, when an adjusting tool is used to drive the second lead screw to rotate, the second locking disc can be driven to rotate. When the second lead screw stops rotating, the ball head of the ball head plunger on the second locking disc cooperates with the second locking portion on the housing, which can limit the rotation of the second locking disc, so as to limit the rotation of the second lead screw and prevent the height of the saw blade from changing due to the rotation of the second lead screw caused by the vibration during sawing of the saw blade.

[0013] In some embodiments, the driving end of the first motor is connected to a first saw blade whose upper end can move above the table board, and the driving end of the second motor is connected to a second saw blade whose upper end can move above the table board.

[0014] In some embodiments, the driving member is a spring. The spring is sleeved on the rod body portion, and one end thereof abuts against the housing and the other end abuts against the adjusting portion;

[0015] Or the driving member is an open circlip, and the open circlip is clamped on the rod body portion to limit the axial movement of the leveling bolt relative to the housing.

[0016] In some embodiments, the first nut is fixedly connected to a first connecting member, the first connecting member is fixedly connected to the first motor, a material separating plate is arranged at the rear side of the frame body, and the connecting plate at the lower end of the material separating plate passes through the vertical strip-shaped hole on the frame body and is connected to the first connecting member. The second nut is fixedly connected to a second connecting member, and the second connecting member is fixedly connected to the second motor;

[0017] The first motor and the second motor are respectively electrically connected to the controller. The controller is provided with a first control switch, a second control switch, a third control switch, a power supply connector and a socket.

[0018] In some embodiments, a limiting plate for restricting the forward movement distance of the leveling bolt is provided on the front side of the leveling bolt. The limiting plate is connected to the housing through a connecting bolt, and a through hole corresponding to the leveling bolt is provided on the limiting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic structural diagram of a master-slave saw according to an embodiment provided by the present invention;

[0020] Figure 2 FIG. 2 is a schematic structural diagram of the master-slave saw from another perspective;

[0021] Figure 3 FIG. 3 is a schematic structural diagram of the first motor and the first lead screw on the master-slave saw;

[0022] Figure 4 FIG. 4 is a schematic structural diagram of the upper frame body, the housing and the second motor on the master-slave saw;

[0023] Figure 5 For Figure 4 the exploded structural diagram;

[0024] Figure 6 FIG. 5 is a schematic structural diagram of the housing and the second motor on the master-slave saw;

[0025] Figure 7 FIG. 6 is a schematic structural diagram of the housing on the master-slave saw;

[0026] REFERENCE NUMERALS:

[0027] 1. Frame body; 11. First bearing seat; 12. Dividing plate; 121. Connecting plate; 13. Base body; 131. First locking portion; 14. Pipe joint; 2. First motor; 21. First slide bar; 22. First saw blade; 3. First lead screw; 31. First nut; 32. First connecting member; 33. First screwing portion; 34. First locking disc; 35. First ball plunger; 4. Table board; 41. First through hole; 42. Second through hole; 43. Microswitch; 5. Housing; 50. Avoidance hole; 51. Second locking portion; 52. Moving hole; 6. Second motor; 61. Second slide bar; 62. Second saw blade; 7. Second lead screw; 71. Second nut; 72. Second connecting member; 73. Second screwing portion; 74. Second locking disc; 75. Second ball plunger; 8. Bracket; 81. Adjusting portion; 811. Threaded hole; 9. Leveling bolt; 91. Driving member; 92. Limiting plate; 93. Connecting bolt; 94. Sleeve; 10. Controller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To make the objectives, technical solutions, and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0029] In the description of the present utility model, it should be understood that with respect to the orientation description, such as the orientations or positional relationships indicated by up, down, front, back, left, right, etc., are based on the orientations or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present utility model.

[0030] In the description of the present utility model, unless otherwise clearly defined, terms such as "set", "installed", "connected", "fixedly connected", etc. should be understood in a broad sense. Those skilled in the relevant technical field can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0031] Refer to Figures 1 to 7 As shown, a mother-and-son saw provided by the present utility model includes: a frame body 1, a first motor 2, and a first lead screw 3. A table board 4 is fixedly connected to the top of the frame body 1. The first motor 2 is vertically slidably connected to the frame body 1. Among them, the first motor 2 is vertically slidably engaged with the frame body 1 through the cooperation of a guide rail and a slider, or the first motor 2 is slidably engaged with the frame body 1 through the cooperation of a first slide bar 21 and a guide hole. In this embodiment, it is preferably that the first motor 2 is slidably engaged with the frame body 1 through the cooperation of the first slide bar 21 and the guide hole. Specifically, two vertical first slide bars 21 are fixedly connected to the frame body 1, and two guide holes on the front end cover of the first motor 2 are slidably engaged with the two first slide bars 21. The driving end of the first motor 2 is connected to a first saw blade 22 (i.e., the mother saw, also known as the large saw blade). The upper part of the first saw blade 22 can pass through the first strip-shaped hole on the table board 4 to the upper side of the table board 4, and the lower end of the first saw blade 22 is located at the rear side of the frame body 1.

[0032] The first lead screw 3 is vertically arranged on one side of the first motor 2 and is rotatably connected to the frame 1. Specifically, a first bearing block 11 is fixedly connected to the frame 1. The lower end of the first lead screw 3 is rotatably connected to the first bearing block 11. A first nut 31 is in threaded engagement with the first lead screw 3. The first nut 31 is directly fixedly connected to the first motor 2, or the first nut 31 is fixedly connected to a first connecting member 32, and the first connecting member 32 is fixedly connected to the first motor 2. In this embodiment, it is preferably that the first nut 31 is fixedly connected to the first connecting member 32. The right end of the first connecting member 32 is fixedly connected to the front end cover of the first motor 2. A material distribution plate 12 is arranged at the rear side of the frame 1. The upper part of the material distribution plate 12 can pass through the first strip-shaped hole on the table plate 4 to the upper side of the table plate 4. A connecting plate 121 is arranged at the front side of the lower end of the material distribution plate 12. The connecting plate 121 passes through the vertical strip-shaped hole on the frame 1 and is fixedly connected to the first connecting member 32.

[0033] A first screwing part 33 is arranged at the top of the first lead screw 3. The first screwing part 33 is a hexagonal groove arranged at the top of the first lead screw 3, or the first screwing part 33 is a hexagonal screw head arranged at the top of the first lead screw 3, or the first screwing part 33 is a hexagonal screw or an internal hexagonal screw fixedly connected to the top of the first lead screw 3. In this embodiment, it is preferably that the first screwing part 33 is an internal hexagonal screw fixedly connected to the top of the first lead screw 3.

[0034] A first through hole 41 corresponding to the first screwing part 33 is arranged on the table plate 4. Among them, the first screwing part 33 is located below the first through hole 41 and corresponds to it up and down, or the first screwing part 33 is located in the first through hole 41 and does not protrude above the table plate 4. In this embodiment, it is preferably that the first screwing part 33 is located below the first through hole 41 and corresponds to it up and down. The first through hole 41 is a circular hole or a quadrilateral hole or a pentagonal hole or a hexagonal hole or a strip-shaped hole or an elliptical hole, etc.

[0035] A seat body 13 fixedly connected to the frame 1 is arranged below the first bearing block 11. The lower end of the first lead screw 3 extends below the seat body 13 and is fixedly connected to a first locking disc 34. One first ball plunger 35 or two first ball plungers 35 or three first ball plungers 35 or more are fixedly connected to the first locking disc 34. In this embodiment, it is preferably that three first ball plungers 35 are fixedly connected to the first locking disc 34 by circumferential threading. The ball head of the first ball plunger 35 cooperates with a plurality of first locking parts 131 arranged on the circumference of the seat body 13 to limit the rotation of the first locking disc 34. The first locking part 131 is a groove arranged at the bottom of the seat body 13 or a through hole arranged on the seat body 13. In this embodiment, it is preferably that the first locking part 131 is a through hole arranged on the seat body 13.

[0036] When one end of a hexagonal wrench passes through the first through hole 41 and is inserted into the hexagonal groove of the hexagon socket screw at the top of the first lead screw 3 and is rotated, the first lead screw 3 can be driven to rotate. The rotation of the first lead screw 3 can drive the first nut 31 to drive the first connecting member 32 to lift and lower. The lifting and lowering of the first connecting member 32 is linked to the lifting and lowering of the first motor 2 and the first saw blade 22, and at the same time, it is also linked to the lifting and lowering of the blank dividing plate 12, so as to realize the adjustment of the height of the first saw blade 22.

[0037] A housing 5 is provided on the front side of the frame body 1. A second motor 6 is vertically slidably fitted in the housing 5. Among them, the second motor 6 is vertically slidably fitted with the housing 5 through the cooperation of a guide rail and a slider, or the second motor 6 is slidably fitted with the housing 5 through the cooperation of a second slide bar 61 and a guide hole. In this embodiment, it is preferably that the second motor 6 is slidably fitted with the frame body 1 through the cooperation of the second slide bar 61 and the guide hole. Specifically, two vertical second slide bars 61 are fixedly connected in the housing 5, and two guide holes on the front end cover of the second motor 6 are slidably fitted with the two second slide bars 61. The driving end of the second motor 6 is connected with a second saw blade 62 (i.e., a sub-saw, also known as a small saw blade). The upper part of the second saw blade 62 can pass through the second strip-shaped hole on the table plate 4 to the upper part of the table plate 4, and the lower end of the second saw blade 62 is located at the rear side of the frame body 1.

[0038] A second lead screw 7 is vertically rotatably fitted in the housing 5. Specifically, a second bearing seat is fixedly connected in the housing 5, and the lower end of the second lead screw 7 is rotatably connected with the second bearing seat. A second nut 71 is threadedly fitted on the second lead screw 7. The second nut 71 is directly fixedly connected with the second motor 6, or the second nut 71 is fixedly connected to a second connecting member 72, and the second connecting member 72 is fixedly connected with the second motor 6. In this embodiment, it is preferably that the first nut 31 is fixedly connected to the first connecting member 32, and the right end of the first connecting member 32 is fixedly connected to the front end cover of the first motor 2.

[0039] A second screwing part 73 is provided at the upper end of the second lead screw 7. The second screwing part 73 is located in the housing 5. A through hole corresponding to the second screwing part 73 is provided at the top of the housing 5, or the second screwing part 73 is located in the through hole provided at the top of the housing 5, or the second screwing part 73 protrudes above the housing 5. In this embodiment, it is preferably that the second screwing part 73 protrudes above the housing 5. The second screwing part 73 is a hexagonal groove provided at the top of the second lead screw 7, or the second screwing part 73 is a hexagonal screw head provided at the top of the second lead screw 7, or the second screwing part 73 is a hexagon socket screw or an internal hexagon socket screw fixedly connected to the top of the second lead screw 7. In this embodiment, it is preferably that the second screwing part 73 is an internal hexagon socket screw fixedly connected to the top of the second lead screw 7.

[0040] The platen 4 is provided with a second through hole 42 corresponding to the second screwing part 73. Among them, the second screwing part 73 is located below the second through hole 42 and corresponds to it up and down, or the second screwing part 73 is located within the second through hole 42 and does not protrude above the platen 4. In this embodiment, it is preferred that the second screwing part 73 is located below the second through hole 42 and corresponds to it up and down. The second through hole 42 is a circular hole, or a quadrilateral hole, or a pentagonal hole, or a hexagonal hole, or a strip hole, or an elliptical hole, etc.

[0041] The lower end of the second lead screw 7 extends below the housing 5 and is fixedly connected with a second locking disc 74. One second ball plunger 75, or two second ball plungers 75, or three second ball plungers 75, or more are fixedly connected to the second locking disc 74. In this embodiment, it is preferred that three second ball plungers 75 are circumferentially and threadedly connected to the second locking disc 74. The ball heads of the second ball plungers 75 cooperate with a plurality of second locking parts 51 arranged on the circumference of the bottom of the housing 5 to limit the rotation of the second locking disc 74. The second locking part 51 is a groove provided at the bottom of the housing 5 or a through hole provided on the housing 5. In this embodiment, it is preferred that the second locking part 51 is a through hole provided at the bottom of the housing 5.

[0042] When one end of a hexagon wrench passes through the second through hole 42 and is inserted into the hexagonal groove of the internal hexagonal screw at the top of the second lead screw 7 and is screwed, the second lead screw 7 can be driven to rotate. The rotation of the second lead screw 7 can drive the second nut 71 to drive the second connecting piece 72 to move up and down. The up and down movement of the second connecting piece 72 is linked to the up and down movement of the second motor 6 and the second saw blade 62, so as to realize the adjustment of the height of the second saw blade 62.

[0043] Brackets 8 connected to the frame 1 are respectively provided on the left side, right side and below of the housing 5. The three brackets 8 and the frame 1 are respectively fixedly connected by bolts, or the three brackets 8 and the frame 1 are welded, or the three brackets 8 and the frame 1 are integrally formed. In this embodiment, it is preferred that the three brackets 8 and the frame 1 are respectively fixedly connected by bolts, and a gap is maintained between the housing 5 and the three brackets 8.

[0044] Adjusting parts 81 are respectively provided on one side of the three brackets 8 facing the housing 5. The adjusting parts 81 are in the shape of a plate or a block. The three adjusting parts 81 respectively pass through three avoiding holes 50 on the housing 5 and extend into the housing 5. A gap is maintained between the adjusting parts 81 and the avoiding holes 50.

[0045] The rod bodies of the three leveling bolts 9 respectively pass through three movable holes 52 on the housing 5 and are correspondingly threadedly engaged with the threaded holes 811 on the three adjusting parts 81. The rod bodies are movably engaged with the movable holes 52. Specifically, a gap is maintained between the rod bodies and the hole walls of the movable holes 52. The movable holes 52 are circular holes, or strip holes, or cross-shaped holes. In this embodiment, it is preferred that the movable holes 52 are circular holes.

[0046] A driving member 91 is connected to the leveling bolt 9. When the leveling bolt 9 is screwed, the driving member 91 can drive the housing 5 to move relative to the adjusting portion 81. The driving member 91 is a spring. The spring is sleeved on the rod portion, and one end thereof abuts against the housing 5 and the other end abuts against the adjusting portion 81. Alternatively, the driving member 91 is an open circlip. The open circlip is arranged inside the housing 5 and is clamped in the annular groove on the rod portion to limit the axial movement of the leveling bolt 9 relative to the housing 5. That is, when leveling, the leveling bolt 9 and the housing 5 move together. When the leveling bolt 9 at the right end of the housing 5 is screwed clockwise, the leveling bolt 9 moves backward, and the screw head of the leveling bolt 9 drives the right end of the housing 5 to swing backward. When screwed counterclockwise, the leveling bolt 9 moves forward, and the open circlip / spring drives the right end of the housing 5 to swing forward. In this embodiment, the driving member 91 is preferably a spring.

[0047] The leveling bolts 9 are all hex socket head cap screws or hexagon bolts. In this embodiment, the leveling bolts 9 are preferably all hex socket head cap screws. A limiting plate 92 for restricting the forward movement distance is arranged on the front side of the leveling bolt 9. Both ends of the limiting plate 92 are respectively connected to the threaded holes on the housing 5 through connecting bolts 93. A sleeve 94 for keeping a distance between the limiting plate 92 and the housing 5 is sleeved on the connecting bolt 93. A through hole corresponding to the hexagonal groove on the hex socket head cap screw is arranged on the limiting plate 92. The diameter of the through hole is smaller than the screw head diameter of the hex socket head cap screw. One end of a hex key passes through the through hole and is inserted into the hexagonal groove on the hex socket head cap screw, and by screwing the hex key, the hex socket head cap screw can be driven to rotate for leveling.

[0048] When the leveling bolt 9 at the right end of the housing 5 is screwed clockwise, the screw head of the leveling bolt 9 can drive the right end of the housing 5 to swing backward. When the leveling bolt 9 at the right end of the housing 5 is screwed counterclockwise, under the action of the driving member 91, the right end of the housing 5 can be driven to swing forward, so as to realize the front-back swing adjustment of the right end of the housing 5. When the leveling bolt 9 at the left end of the housing 5 is screwed clockwise or counterclockwise, the front-back swing adjustment of the left end of the housing 5 can be realized. The front-back swing of the left end or the right end of the housing 5 drives the second motor 6 and the second saw blade 62 to swing, so as to realize the adjustment of the straightness of the second saw blade 62 in the transverse direction; when the leveling bolts 9 on the left side and the right side of the housing 5 are screwed simultaneously in the same direction, the overall front-back movement adjustment of the second motor 6 and the second saw blade 62 can be realized, and the overall front-back movement adjustment of the second saw blade 62 can be realized; when the leveling bolt 9 at the lower end of the housing 5 is screwed clockwise or counterclockwise, the front-back swing adjustment of the lower end of the housing 5 can be realized. The front-back swing of the lower end of the housing 5 drives the second motor 6 and the second saw blade 62 to swing, so as to realize the adjustment of the perpendicularity of the second saw blade 62 in the vertical direction.

[0049] The first motor 2 and the second motor 6 are electrically connected to the controller 10 respectively. The controller 10 is provided with a first control switch, a second control switch, a third control switch, a power connector and a socket. The first control switch is used to control the start and stop of the first motor 2, and the second control switch is used to control the start and stop of the second motor 6. The power connector is used to plug in the power supply plug to connect to electricity. A micro switch 43 is arranged on the table board 4, and the switch contact on the micro switch 43 protrudes above the table board 4. The micro switch 43 is electrically connected to the controller 10. A cover body is connected to the rear side of the frame body 1, and a dust accumulation cavity is formed between the cover body and the frame body 1. The lower ends of the first saw blade 22 and the second saw blade 62 are located in the dust accumulation cavity. A pipe joint 14 communicating with the dust accumulation cavity is connected to the frame body 1. The suction pipe of the vacuum cleaner is used to connect to the pipe joint 14, and the power plug of the vacuum cleaner is used to plug into the socket on the controller 10 to connect to electricity. The third switch is a two-position double-control switch. When the power plug of the vacuum cleaner is plugged into the socket on the controller 10 and the third switch is toggled to the first gear position, the plate is placed on the table board 4 to press the micro switch 43. After the micro switch 43 is triggered, the controller 10 controls the socket on it to connect to electricity, and the vacuum cleaner starts. When the plate leaves the micro switch 43, the switch contact on the micro switch 43 resets, and the controller 10 controls the socket on it to cut off the power, and the vacuum cleaner shuts down, realizing the start and stop control of the vacuum cleaner. When the third switch is toggled to the second gear position, the controller 10 controls the socket on it to be continuously powered on, and the controller 10 is a conventional controller on the sawing equipment.

[0050] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the creative concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A mother-and-child saw, characterized in that: include: A frame, a first motor and a first screw rod, wherein a table is connected to the top of the frame, the first motor is vertically slidably connected to the frame, the first screw rod is vertically arranged at one side of the first motor and is rotatably connected to the frame, the first screw rod is threaded with a first nut fixedly connected to the first motor, a first screwing portion is arranged on the top of the first screw rod, and a first through hole corresponding to the first screwing portion is arranged on the table.

2. The mother-and-child saw according to claim 1, characterized in that: A shell is provided on the front side of the frame, and a second motor is vertically slidably fitted in the shell and a second screw rod is vertically rotatably fitted in the shell. A second nut fixedly connected to the second motor is threaded on the second screw rod, a second screwing portion is provided at the upper end of the second screw rod, and a second through hole corresponding to the second screwing portion is provided on the table.

3. The mother-and-child saw according to claim 2, characterized in that: Brackets connected to the frame body are respectively provided on the left side, right side and bottom of the shell, and the adjustment parts on the three brackets extend into the frame body through the avoidance holes on the shell respectively. The rod parts of the three leveling bolts are movably matched with the three movable holes on the shell and correspondingly threadedly matched with the three threaded holes on the adjustment parts. The leveling bolts are connected with a driving part which can drive the shell to move relative to the adjustment part when the leveling bolts are screwed.

4. The parent-child saw according to claim 2, characterized in that: A micro switch is provided on the table top, which is electrically connected to the controller and protrudes from the top thereof; a cover is connected to the rear side of the frame, a dust storage chamber is formed between the cover and the frame, a pipe joint connected to the dust storage chamber is connected to the frame, the controller is used to be electrically connected to the vacuum cleaner, and the vacuum pipe of the vacuum cleaner is used to be connected to the pipe joint.

5. The mother-and-child saw according to claim 1, characterized in that: The lower end of the first screw rod is rotatably connected to the first bearing seat fixedly connected to the frame body, and a seat body fixedly connected to the frame body is arranged below the first bearing seat. The lower end of the first screw rod extends to the bottom of the seat body and is fixedly connected to a first locking plate. The ball head of the first ball head plunger fixed on the first locking plate cooperates with multiple first locking parts circumferentially arranged on the seat body to limit the rotation of the first locking plate.

6. The parent-child saw according to claim 2, characterized in that: The lower end of the second screw rod extends to the bottom of the housing and is fixedly connected to a second locking plate. The ball head of the ball plunger fixed to the second locking plate cooperates with a plurality of second locking parts circumferentially arranged on the housing to limit the rotation of the second locking plate.

7. The parent-child saw according to claim 2, characterized in that: The driving end of the first motor is connected to a first saw blade whose upper end can be moved above the table, and the driving end of the second motor is connected to a second saw blade whose upper end can be moved above the table.

8. The parent-child saw according to claim 3, characterized in that: The driving member is a spring, which is sleeved on the rod body, and one end of the spring abuts against the housing, and the other end abuts against the adjusting part; Alternatively, the driving member is an open retaining spring, and the open retaining spring is clamped on the rod body to limit the axial movement of the leveling bolt relative to the housing.

9. The parent-child saw according to claim 4, characterized in that: The first nut is fixedly connected to the first connecting member, the first connecting member is fixedly connected to the first motor, a material dividing plate is arranged at the rear side of the frame, a connecting plate at the lower end of the material dividing plate passes through a vertical strip hole on the frame and is connected to the first connecting member, the second nut is fixedly connected to the second connecting member, and the second connecting member is fixedly connected to the second motor; The first motor and the second motor are electrically connected to the controller respectively, and the controller is provided with a first control switch, a second control switch, a third control switch, a power connector and a socket.

10. The mother-and-child saw according to claim 3, characterized in that: A limit plate for limiting the forward movement distance of the leveling bolt is arranged at the front side of the leveling bolt, the limit plate is connected to the housing via a connecting bolt, and a through hole corresponding to the leveling bolt is arranged on the limit plate.

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