CN202356728U

CN202356728U - Pneumatic sawing machine

Info

Publication number: CN202356728U
Application number: CN2011202945500U
Authority: CN
Inventors: 刘成
Original assignee: Chengdu Aircraft Industrial Group Co Ltd
Current assignee: Chengdu Aircraft Industrial Group Co Ltd
Priority date: 2011-08-15
Filing date: 2011-08-15
Publication date: 2012-08-01
Anticipated expiration: 2021-08-15

Abstract

The utility model discloses a pneumatic sawing machine, wherein the structure is simple, the number of moving parts is small, the volume is small, the weight is small, and the operation is convenient. The pneumatic sawing machine possesses a handle (1) with an air nozzle and a button switch, an airflow actuator (4) arranged in the cylinder of an outer housing (5), and an end cap (2) linked with the airflow actuator. An airflow pressurized cap (16) which pushes a pneumatic rod (6) to move downward under the effect of airflow is provided in the end cap, axial airflow apertures which are uniformly distributed on the ring surface and inclined to the central axis symmetrically are provided on the airflow pressurized cap (16), the axial airflow apertures enables the airflow pressurized cap to rotate under the effect of airflow, the axial airflow apertures are communicated or mismatched with airflow channels with the same direction, shape and number on the airflow actuator, when the axial airflow apertures are communicated with the airflow channels, the airflow passes through to reach the ring groove at the bottom of the airflow actuator directly along the axial direction, and pressurized airflow is formed to reversely push the pneumatic rod upward.

Description

The Pneumatic saw cutter

Technical field

The utility model relates to a kind of cutting element of hand-held pneumatic sawing.

Background technology

Prior art is used to cut electronic cast-cutting saw soft, hard material has circular saw, the reciprocating motor cast-cutting saw, and in general, electronic cast-cutting saw all is made up of saw blade rotating shaft of motor, saw blade or circular saw bit, outer cover bearing outside etc. usually.The reciprocating motor cast-cutting saw adopts common toggle, and it is that rotation conversion with crank turns to the reciprocating motion of reciprocating lever on straight line.Bearing and gear wheel constitute crank, and an end of connecting rod is connected with reciprocating lever through universal joint, the rotation of driven by motor gear wheel, and it is reciprocating to drive reciprocating lever through connecting rod.For balanced action, be equipped with a balance weight, it is simultaneously reciprocating that it drives reciprocating lever through eccentric wheel.The clamp mechanism of saw blade is to clamp and be fixed on the head of reciprocating lever through pressing plate and hold-down screw.The end face of reciprocating lever has one saw blade is hooked, and prevents the alignment pin that saw blade is deviate from.The normal problem that occurs of electric reciprocating saw has: high-voltage breakdown, and wiping iron burns machine, the machine seismic noise is big, and spark is big, and switch is prone to stuck, and bullet does not go out, and locking press button is prone to lose efficacy, the leakage of oil of reciprocating lever head, inner lead is long, is prone to bump movement parts, and it is big that saw blade is shaken beat.

Summary of the invention

The purpose of the utility model is the weak point to above-mentioned prior art, provides a kind of more simple in structure than above-mentioned prior art, and moving component is few, and volume is little, and is in light weight, the Pneumatic saw cutter of being convenient to operate.

The utility model solves the technical scheme that its technical problem adopted: a kind of Pneumatic saw cutter; Have a handle 1 that has valve and press button, be assemblied in shell body 5 cylindrical shells air-flow pressurized strut 4 and with the end cap 2 that air-flow pressurized strut 4 links, it is characterized in that; Be provided with in the said end cap 2 and under the air-flow effect, promote the air-flow supercharging lid 16 that air-leg 6 moves downward; On the end face of said air-flow supercharging lid 16, be shaped on and be evenly distributed on the circumference anchor ring, symmetrically towards axial flow hole 17 that central axis tilts; This axial flow hole 17 makes said flow supercharging lid 16 produce rotation under the air-flow effect; And with air-flow pressurized strut 4 end faces of lower ends on direction consistent, shape is consistent, gas channel 15 dislocation that quantity is identical or communicate are when axial flow hole 17 communicates with gas channel 15; Air-flow tilts to connect through said air-flow pressurized strut 4 bottom annular grooves vertically, forms one reverse upwards pressurized air stream that promotes air-leg 6.

The utility model has following beneficial effect than prior art.

Pneumatic saw cutter that the utility model provides and prior electric saw have following advantage:

The utility model internal structure is more simple in structure than power saws, concentrates the reciprocating motion of impulse force to replace the motor saw to use driven by motor with high pressure draught, has reduced prior art turbine worm and the gear-driven volume that takies; It is little to have volume, in light weight, and cutting force is big; Efficient is high, and motion steadily, and is easy to operate; Anti-long-time operation is not generated heat, the advantage of long service life.Avoided the prior art high-voltage breakdown, wiping iron burning machine, the defective that spark is big, the machine seismic noise is big.

The utility model can make full use of pneumatic resource, reduces and uses electric consumption.Can implement cutting to steel plate, steel circle, aluminium sheet, aluminium section bar; Can implement the location to the profile of flat part, cutting or blanking accurately.

Description of drawings

Fig. 1 is the front view of the utility model Pneumatic saw cutter.

The A-A of Fig. 2 Fig. 1 is to cutaway view.

Fig. 3 is the cutaway view of the air-flow supercharging lid among Fig. 1.

Fig. 4 is the cutaway view of the air-flow pressurized strut among Fig. 1.

Fig. 5 is the vertical view of Fig. 4.

Fig. 6 is that the B of Fig. 5 is to view.

Among the figure: 1 handle, 2 end caps, 3 linings, 4 air-flow pressurized struts, 5 shell bodies, 6 air-legs; 7 vibration-damping sheets, 8 bearings, 9 adapter sleeves, 10 supports, 11 location guide wheels, 12 location sawtooth; 12 Saw blades, 13 springs, 14 inclination airflow holes, 16 gas channels, 16 air-flow superchargings lid, 17 axial flow holes.

The specific embodiment

Consult Fig. 1-Fig. 6.In a described most preferred embodiment, said Pneumatic saw cutter has a handle 1 that has valve and press button, is assemblied in air-flow pressurized strut 4 in shell body 5 cylindrical shells and the end cap 2 that links with air-flow pressurized strut 4.End cap 2 is built-in with air-flow supercharging lid 16 shown in Figure 3; Be shaped on the axial flow hole 17 that is evenly distributed on the circumference anchor ring on the end face of air-flow supercharging lid 16; These 17 oblique angles, axial flow hole are according to the Lavalle principle, the axioversion towards the center symmetrically, and direction is consistent on air-flow pressurized strut 4 end faces of the axioversion circular hole that this five equilibrium is uniformly distributed with and lower ends, shape is consistent; The gas channel 15 that quantity is identical misplaces or communicates; When axial flow hole 17 communicated with gas channel 15, air-flow tilted to connect through said air-flow pressurized strut 4 bottom annular grooves vertically, formed one reverse upwards pressurized air stream that promotes air-leg 6; It is more concentrated that the Lavalle pressurized air stream that produces gets into air-flow pressurized strut 4 bottom annular grooves, and impulsive force is more arranged.

The linings 3 of air-flow supercharging lid 16 through the lower end link to each other like Fig. 4, air-flow pressurized strut 4 shown in Figure 5, and are force-fitted in the cylindrical shell of shell body 5 through bearing 8.Air-flow pressurized strut 4 connects air-leg 6 through adapter sleeve 9.Air-leg 6 is press fit relation with adapter sleeve 9.Adapter sleeve 9 be shaped on one can with the holddown groove (not shown) of the width and the consistency of thickness of Saw blade 12, Saw blade 12 is fixed on the adapter sleeve 9 by the trip bolt on the adapter sleeve 9 through said holddown groove.Saw blade 12 both sides are provided with the location guide wheel 11 of 2 positions saw tooth bar 12 vertical direction, and Saw blade 12 stretches out the guide table of support 10 lower ends through two location guide wheels 11 on two horizontal connecting axles of support 10 die cavities, does straight reciprocating motion.

Be provided with a spring 13 that is assemblied on support 10 biside plates among Fig. 2; Elasticity through spring 13 is received or the active force that contracts can guarantee the appropriate clearance amount of guide wheel and Saw blade 12; Also can be according to the thickness of Saw blade 12; The coupling mechanism force of the screw of adjustment support 10 both sides, the intermediate space and the thickness of Saw blade 12 that are located at the location guide wheel 11 of Saw blade 12 both sides are consistent.The benefit of spring 13 is and can appropriateness adjusts free clearance, makes things convenient for manyly than shimming, also can be according to the thickness rapid adjustment gap of Saw blade 12.Simultaneously, during Saw blade 12 work, because the elastic acting force of spring 13 can guarantee that more when vibration, Saw blade 12 is constant with guide wheel gap, location.

On Fig. 5, air-flow pressurized strut 4 end faces shown in Figure 6, be shaped on the axioversion gas flow hole passage 15 of the perforation bottom annular groove that is provided with according to the Lavalle principle; This gas channel 15 air-flow pressurized strut 4 cylinders that are periphery; Towards central axis, form a rounding frustum and shrink the rotary body profile symmetrically around central axis.The incline direction in the axial flow hole 17 on the distribution of gas channel 15 and the said flow supercharging lid 16 is identical, but the angle that tilts can variant, the big or small basically identical of shape, and quantity is identical, and is to concern one to one.Root at 4 three sinking stepped holes of air-flow pressurized strut is shaped on annular groove respectively; Be shaped on five equilibrium on the annular groove and be uniformly distributed with the inclination airflow hole 14 of circumference; This inclination airflow hole 14 tilts to connect said flow passage 15 vertically; Make air-flow get into the pneumatic chamber of air-flow pressurized strut 4 according to the principle supercharging of aerodynamics Lavalle, process auxiliary drive air-leg 6 moves upward.When 6 of air-legs move to pressurized strut 4 middle parts, give certain high pressure draught impulsive force that makes progress, the opposition of generation drives air-leg 6 and moves upward, and 6 one-tenth certain cycles of its air-leg is made progress, following reciprocating motion.Can also be shaped on the perforation cylinder lumen at air-flow pressurized strut 4 middle parts, the radial air flow hole that communicates with at least one gas channel 15 simultaneously moves upward during through this radial air flow hole with auxiliary air-leg 6.Be shaped on the vibration-damping sheet 7 that auxiliary air-leg 6 elasticity make progress in the bottom of air-flow pressurized strut 4 pneumatic chambers.

The operation principle of the utility model is; High pressure draught gets into end cap 2 through handle 1; Impact supercharging lid 16 and produce rotation at a high speed, when supercharging cover axial flow hole 17 on 16 end faces rotate to air-flow pressurized strut 4 on gas channel 15 when misplacing mutually, the air-flow that gets into gas channel 15 is stopped; Get into supercharging and cover the upper surface that 16 axial flow holes, 17 interior air-flows directly impact air-leg 6, drive air-leg 6 and produce the active force that moves downward.Air-leg 6 moves downward arrival air-flow pressurized strut 4 bottom annular grooves and divides into the vibration-damping sheet of putting 7, and the elastic damping sheet 7 that bump is processed by vulcanie makes vibration-damping sheet 7 produce reaction force upwards; Auxiliary air-leg 6 moves upward; At this moment the axial flow hole 17 on the supercharging lid 16 rotates to when consistent with the gas channel of pressurized strut 4 15, and the air-flow that gets into gas channel 15 arrives the bottom of pressurized strut 4, impact pressurized strut 4 bottom end faces; Produce the air-flow that upwards impacts air-leg 6 bottom end faces; Drive air-leg 6 and move upward, when the air stream drives air-leg 6 that makes progress is crossed inclination airflow hole 14, get into the air-flow of oblique airflow hole 14; The active force of making progress for air-leg 6 again promotes air-leg 6 and moves upward.It is reciprocating to drive air-leg 6 again and again, drives on the Saw blade 12, comes and goes down and does the vertical line motion, and workpiece is implemented sawing processing.Because air-flow pressurized strut 4 inner chambers and air-leg 6 gaps are very little, have bearing 8 to locate, and make its air-leg 6 in air-flow pressurized strut 4, make following round rectilinear motion in addition.

Claims

1. Pneumatic saw cutter; Have a handle (1) that has valve and press button, be assemblied in shell body (5) cylindrical shell air-flow pressurized strut (4) and with the end cap (2) that air-flow pressurized strut (4) links, it is characterized in that; Be provided with in the said end cap (2) and under the air-flow effect, promote the air-flow supercharging lid (16) that air-leg (6) moves downward; On the end face of said air-flow supercharging lid (16), be shaped on and be evenly distributed on the circumference anchor ring, symmetrically towards axial flow hole (17) that central axis tilts; This axial flow hole (17) makes said flow supercharging lid (16) produce rotation under the air-flow effect; And with air-flow pressurized strut (4) end face of lower ends on direction consistent, shape is consistent, the gas channel that quantity is identical (15) misplaces or communicates, when axial flow hole (17) and gas channel (15) when communicating; Air-flow tilts to connect through said air-flow pressurized strut (4) bottom annular groove vertically, forms one reverse upwards pressurized air stream that promotes air-leg (6).

2. Pneumatic saw cutter as claimed in claim 1; It is characterized in that; Root at (4) three sinking stepped holes of air-flow pressurized strut is shaped on annular groove respectively, is shaped on the inclination airflow hole (14) that five equilibrium is uniformly distributed with circumference on the annular groove, and this inclination airflow hole (14) tilts to connect said flow passage (15) vertically; Make air-flow get into the air-leg chamber of air-flow pressurized strut (4) according to the principle supercharging of aerodynamics Lavalle, process auxiliary drive air-leg (6) moves upward.

3. Pneumatic saw cutter as claimed in claim 1 is characterized in that, can also be shaped on the perforation cylinder lumen at air-flow pressurized strut (4) middle part, the radial air flow hole that communicates with at least one gas channel (15) simultaneously.

4. Pneumatic saw cutter as claimed in claim 1 is characterized in that, is shaped on the vibration-damping sheet (7) that auxiliary air-leg (6) elasticity makes progress in the bottom of air-flow pressurized strut (4) pneumatic chamber.

5. Pneumatic saw cutter as claimed in claim 1; It is characterized in that; Described air-flow pressurized strut (4) connects air-leg (6) through adapter sleeve (9), and connects Saw blade (12) through screw, and Saw blade (12) is positioned on the location guide wheel (11) through support (10).