CN201862858U

CN201862858U - Pneumatic reciprocating file

Info

Publication number: CN201862858U
Application number: CN2010206035942U
Authority: CN
Inventors: 鲍晓峰
Original assignee: Ningbo Yinzhou Wenting Electromechanical Technology Co Ltd
Current assignee: Ningbo Yinzhou Wenting Electromechanical Technology Co Ltd
Priority date: 2010-11-11
Filing date: 2010-11-11
Publication date: 2011-06-15
Anticipated expiration: 2020-11-11

Abstract

A pneumatic reciprocating file belongs to a pneumatic tool used for removing burrs of mechanical parts and grinding the mechanical parts. The pneumatic reciprocating file comprises a plastic shell, a valve and a press handle, the valve is connected to the right end of the plastic shell, the press handle is hinged with the valve, a reciprocating mechanism is mounted in the plastic shell, the valve is provided with a switch component, a metal guiding insert is arranged in an inner hole at the left end of the plastic shell, the left end of the reciprocating mechanism is connected with a clamping seat, the clamping seat is connected with a clamping sleeve, the clamping sleeve is inserted in the metal guiding insert and can axially move in the metal guiding insert, an inner hole and an outer circular surface of the metal guiding insert are polygonal straight-barrel-shaped structures, and an outer circular surface of the clamping sleeve matches with the inner hole of the metal guiding insert and is also polygonal. The pneumatic reciprocating file has the advantages that the metal guiding insert replaces a guiding head, and resolves the problem that in the prior art, screws at a connection position between a guiding head and a plastic shell are easy to be loosened, and the guiding head is not easy to be manufactured and is higher in cost.

Description

Pneumatic reciprocal file

Technical field:

The utility model relates to and a kind ofly is used to remove the component of machine burr and to the pneumatic tool that component of machine grinds, specifically is a kind of pneumatic reciprocal file.

Background technology:

At present, as shown in Figure 5, pneumatic reciprocal file generally comprises switch module, pressure handle 102, reciprocating mechanism, the guide head 104 that is equipped with on plastic casing 103, valve body 101, the valve body 101 and is used for fixing the fixed axis 105 of filing sheet 106.Valve body 101 is connected the right-hand member of plastic casing 103, guide head 104 is connected the left end of plastic casing 103 by screw, pressure handle 102 is hinged with valve body 101, reciprocating mechanism is contained in the plastic casing 103, fixed axis 105 is connected with reciprocating mechanism, and fixed axis 105 is inserted in the guide head 104 and can moves axially in guide head 104.In order to prevent that fixed axis 105 from rotating in guide head 104, the outer surface design of the endoporus of guide head 104 and fixed axis 105 has the polygon that cooperatively interacts, and the endoporus required precision of guide head 104 is higher, in addition in use, because the file sheet 106 of pneumatic reciprocal file can produce vibrations when contacting with the parts of being filed, part after causing filing is more coarse, therefore be equipped with on the guide head 104 and be used for frame at the protective frame on the parts (not shown on the figure), for protective frame is installed, be provided with a boss 107 on the guide head 104, and on boss 107, be provided with the installing hole 108 that is used to install protective frame and use screw to be used to lock the screwed hole 109 of protective frame.Though the pneumatic reciprocal file of said structure has obtained using widely, but there are two weak points in it: 1, be connected with plastic casing 103 by screw owing to guide head 104, and fixed axis 105 moves back and forth in guide head 104, produce vibrations, the screw that guide head 104 is connected with plastic casing 103 produces loosening phenomenon; 2, the method making of machining again after the guide head 104 general employing castings, because guide head 104 is provided with boss 107, profile is complicated, endoporus is that polygon and required precision are higher, this has just caused difficulty of machined, production efficiency is lower, manufacturing cost is higher, if adopting the method for powder compaction makes, because the profile of guide head 104 is complicated, the one, be not easy compacting, fixed axis 105 moves back and forth the vibrations that produced and makes the phenomenon that occurs fracture by the screw hole location on the guide head 104 of powder compaction easily in guide head 104 in addition.

The utility model content:

The technical problems to be solved in the utility model is, provides that a kind of can not produce guide head loosening, is convenient to make lower-cost pneumatic reciprocal file.

Technical solution of the present utility model is, a kind of pneumatic reciprocal file with following structure is provided: it comprises plastic casing, valve body, and pressure handle, valve body is connected the right-hand member of plastic casing, pressure handle and valve body are hinged, reciprocating mechanism is housed in the plastic casing, switch module is housed on the valve body, wherein, be provided with metal guiding inserts in the plastic casing left end endoporus, the reciprocating mechanism left end is connected with clamping seats, be connected with gripping sleeve on the clamping seats, gripping sleeve is inserted in the metal guiding inserts and can moves axially in metal leads inserts, the endoporus and the periphery of metal guiding inserts are to be polygonal straight-tube shape structure, and the periphery of gripping sleeve is the polygon that matches with the endoporus of metal guiding inserts.

After adopting above structure, compared with prior art, the pneumatic reciprocal file of the utility model has the following advantages: be embedded in the plastic casing left end endoporus because the guide head of prior art is changed to metal guiding inserts, make metal guiding inserts and plastic casing become one, therefore the pneumatic reciprocal file of the utility model does not exist the screw of guide head of the prior art and plastic casing junction to produce loosening phenomenon, again since metal guiding inserts be shaped as the straight-tube shape structure, be convenient to adopt the method once-forming of powder compaction, needn't adopt after the casting again the method for machining to make, improve production efficiency, saved manufacturing cost.

Description of drawings:

Fig. 1 is the main TV structure schematic diagram of the pneumatic reciprocal file of the utility model;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the perspective view of the pneumatic reciprocal file of the utility model;

Fig. 4 is the perspective view of the metal guiding inserts in the pneumatic reciprocal file of the utility model;

Fig. 5 is the perspective view of the pneumatic reciprocal file of present technology.

The specific embodiment:

Below in conjunction with the drawings and specific embodiments the pneumatic reciprocal file of the utility model is described further:

As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, in this specific embodiment, the pneumatic reciprocal file of the utility model comprises plastic casing 16, valve body 2, the switch module that is equipped with on the valve body 2, pressure handle 7, reciprocating mechanism, clamping seats 22 and gripping sleeve 19, valve body 2 is connected the right-hand member of plastic casing 16 by screw, be provided with gasket seal 33 between valve body 2 and the plastic casing 16, valve body 2 is provided with inlet channel 1 and outlet passageway 34, on inlet channel 1, be provided with the switch module that control gas enters, this switch module comprises valve core 5, valve seat 4, holddown spring 3, adjustment seat 36 and clamp nut 35, valve seat 4 is contained in the top of the radial direction through hole on the valve body 2, clamp nut 35 is threaded in the bottom of radial direction through hole, and be provided with sealing ring between clamp nut 35 and the valve body 2, adjustment seat 36 is contained in the radial direction through hole, and an end withstands on the valve seat 4, the other end is inserted in the endoporus of clamp nut 35, be provided with sealing ring between adjustment seat 36 and the clamp nut 35, valve core 5 is inserted in the valve seat 4, valve seat 4 lower ends withstand on the step surface of valve core 5 lower ends, valve core 5 upper ends contact with pressure handle 7, be provided with sealing ring between valve core 5 and the valve seat 4, holddown spring 3 is in adjustment seat 36, and an end withstands on the valve core 5, and the other end withstands on the adjustment seat 36.Pressure handle 7 is hinged with valve body 2, is hinged with the discharge cock 11 that prevents that pressure handle 7 mistakes from depressing at pressure handle 7 left ends, and being hinged with between discharge cock 11 and pressure handle 7 changes spring 10.Reciprocating mechanism comprises cylinder 9, piston 15, piston rod 17, piston cap 23, front spring 18 and rear spring 6, plastic casing 16 is enclosed within on the cylinder 9, piston 15 is housed in the cylinder 9, piston rod 17, piston cap 23, front spring 18 and rear spring 6, piston 15 is enclosed within on the piston rod 17 and can endwisely slips on piston rod 17, rear spring 6 one ends withstand on the valve body 2, the other end withstands in the groove that piston rod 17 right-hand members establish, piston cap 23 is enclosed within on the piston rod 17 and the right side withstands on the step surface of piston rod 17 left ends, clamping seats 22 is threaded with piston rod 17 left ends and withstands on the piston cap 23, in order to prevent that clamping seats 22 and piston rod 17 threaded connection places from getting loose, and be provided with backing-up screw in the threaded connection place, clamping seats 22 is provided with the mounting groove 38 that is used to install file sheet 40, and use screw to lock file sheet 40, gripping sleeve 19 is enclosed within on the clamping seats 22 and is connected by screw with clamping seats 22, be provided with metal guiding inserts 21 in the plastic casing 16 left end endoporus, gripping sleeve 19 is inserted in the metal guiding inserts 21 and can moves axially in metal leads inserts 21, in order to prevent that gripping sleeve 19 from rotating in guiding inserts 21, the endoporus of metal guiding inserts 21 is hexagon, the periphery of gripping sleeve 19 is the hexagons that match with the endoporus of metal guiding inserts 21, front spring 18 is enclosed within on the clamping seats 22 and an end withstands on the piston cap 23, the other end withstands on the step surface in the plastic casing 16, be with two O type circles 8 on the piston rod 17, these two O type circles 8 are in the both sides of piston 15 respectively, be close to piston cap 23 for one, another is close to the step surface of piston rod 17 right-hand members, directly percussion piston bar and piston cap when being provided with of O type circle can make the piston motion have reduced noise.Piston rod 17, piston cap 23, clamping seats 22 and gripping sleeve 19 are connected together, and can move axially in cylinder 9, and because the cooperation of metal guiding inserts 21 and gripping sleeve 19 has prevented the rotation of piston rod 17, piston cap 23, clamping seats 22 and gripping sleeve 19.Plastic casing 16 inwalls are provided with air inlet duct 12 and outgassing groove 29, air inlet duct 12 communicates with inlet channel 1 on the valve body 2, outgassing groove 29 communicates with outlet passageway 34 on the valve body 2, piston 15, piston rod 17 and piston cap 23 are divided into first gas chamber 24 to cylinder 9 inner chambers, second gas chamber 30 and the 3rd gas chamber 32, cylinder 9 walls are provided with air admission hole 14, first venthole 25, second venthole 28 and the 3rd venthole 31, air admission hole 14 communicates with air inlet duct 12, first venthole 25, second venthole 28 and the 3rd venthole 31 all communicate with outgassing groove, piston 15 peripheries are provided with first cannelure 26, with second cannelure 27, also be provided with the first passage 13 that first cannelure 26 and second gas chamber 30 are communicated on the piston 15, the second channel 37 that second cannelure 27 and first gas chamber 24 are communicated, when piston 15 moves to cylinder 9 right-hand members, at this moment air admission hole 14 communicates with first cannelure 26, second venthole 28 communicates with second cannelure 27, first venthole communicates with first gas chamber, when piston 15 moves to cylinder 9 left ends, at this moment air admission hole 14 communicates with second cannelure 27, first venthole 25 communicates with first cannelure 26, and second venthole communicates with second gas chamber.Plastic casing 16 left sides are connected with protective frame 20, and protective frame 20 is inserted in the hole on plastic casing 16 left sides, and compress protective frame 20 by protection screw 39.

The operation principle of the pneumatic reciprocal file of the utility model is: at first press pressure handle 7 valve core 5 is moved down, holddown spring 3 shrinks, whole inlet channel 1 is opened, Compressed Gas enters air inlet duct 12 by inlet channel 1, when if piston 15 is in position shown in Figure 1, Compressed Gas just enters in first cannelure 26 by air admission hole 14, enter into second gas chamber 30 by first passage 13 again, at this moment piston 15 can be moved to the left the O type circle 8 that impacts piston cap 23 sides fast under the promotion of air pressure, thereby make piston rod 17, piston cap 23, clamping seats 22 and gripping sleeve 19 are together to left movement, at this moment front spring 18 can be in compressive state, gas in first gas chamber 24 can be by first venthole 25 or by second channel 37 simultaneously, second cannelure 27, second venthole 28 enters into outgassing groove 29, and then by outlet passageway 34 discharges, piston rod 17 then, piston cap 23, clamping seats 22 and gripping sleeve 19 meetings return to the home position under the effect of the elastic force of front spring 18, when piston 15 moves to cylinder 9 left ends, air admission hole 14 communicates with second cannelure 27, Compressed Gas just enters in second cannelure 27 by air admission hole 14, enter into first gas chamber 24 by second channel 37 again, at this moment the O type circle 8 that piston 15 meetings move right fast under the promotion of air pressure and impact piston rod 17 right-hand members, thereby make piston rod 17, piston cap 23, clamping seats 22 and gripping sleeve 19 move right together, at this moment rear spring 6 can be in compressive state, gas in second gas chamber 30 can be by second venthole 28 or by first passage 13 simultaneously, first cannelure 26, first venthole 25 enters into outgassing groove 29, and then by outlet passageway 34 discharges, gas in the 3rd gas chamber 32 can enter into outgassing groove 29 by the 3rd passage 31, and then by outlet passageway 34 discharges, piston rod 17 then, piston cap 23, clamping seats 22 and gripping sleeve 19 meetings return to the home position under the effect of the elastic force of rear spring 6, in other words, piston rod 17, piston cap 23, it is to lean on the impulsive force of piston 15 left and right sides rapid movements to realize that clamping seats 22 and gripping sleeve 19 move back and forth together.Above process is the reciprocating together backhaul of piston rod 17, piston cap 23, clamping seats 22 and gripping sleeve 19, and continuation feeding Compressed Gas can make piston rod 17, piston cap 23, clamping seats 22 and gripping sleeve 19 move back and forth together can reach per minute more than 4000 times.Install file sheet 40 on the clamping seats 22, the function that can realize filing sheet 40 is installed saw blade on the clamping seats 22, can become pneumatic reciprocating saw, realizes the function of saw blade.

Claims

1. pneumatic reciprocal file, comprise plastic casing (16), valve body (2), and pressure handle (7), described valve body (2) is connected the right-hand member of plastic casing (16), described pressure handle (7) is hinged with valve body (2), described plastic casing is equipped with reciprocating mechanism in (16), described valve body is equipped with switch module on (2), it is characterized in that: be provided with metal guiding inserts (21) in described plastic casing (16) the left end endoporus, described reciprocating mechanism left end is connected with clamping seats (22), be connected with gripping sleeve (19) on the clamping seats (22), described gripping sleeve (19) is inserted in the metal guiding inserts (21) and can moves axially in metal leads inserts (21), the endoporus and the periphery of described metal guiding inserts (21) are to be polygonal straight-tube shape structure, and the periphery of described gripping sleeve (19) is the polygon that matches with the endoporus of metal guiding inserts (21).