CN202780065U - Drilled hole burr cleaning tool - Google Patents

The utility model relates to the field of machining, in particular to a drilled hole burr cleaning tool. The drilled hole burr cleaning tool comprises a counter boring knife, a knob and an outer shell. A main shaft, a fixed piece, an adjusting piece and a pneumatic motor are installed inside the outer shell, the outer shell is divided into two portions through the fixed piece, the fixed piece is provided with an eccentric air inlet hole, and the adjusting piece and the fixed piece are coaxially installed and attached to each other. The adjusting piece is provided with an air inlet hole and an air inlet channel, one end of the air inlet channel is communicated with the air inlet hole, and the other end of the air inlet channel is communicated with the eccentric air inlet hole. The outer shell is provided with a strip-shaped hole, an adapting piece is installed inside the strip-shaped hole, the knob is installed on the outside of the outer shell and is fixedly connected with the adjusting piece through the adapting piece, one end of the main shaft is connected with the pneumatic motor, and the other end of the main shaft is stretched out of the outer shell and is detachably connected with the counter boring knife. According to the drilled hole burr cleaning tool, the air inlet quantity of compressed air is adjusted in a rotary mode, and then the rotary speed of the counter boring knife is adjusted. Adjustment of the position of the counter boring knife can be completely independent from adjustment of the rotary speed of the counter boring knife, and machining precision and safety can be improved.

Boring deburred instrument

Technical field

The utility model relates to field of machining, is specifically related to a kind of boring deburred instrument.

Background technology

After the machining drilling operating finishes, can leave over metallic iron at the boring positive and negative and cut burr; These burrs can change the size in hole, affect the follow-up surface treatment of parts, the aperture cooperates or the scuffing personnel with other workpiece, therefore generally all need to carry out following process after boring finishes and remove these burrs.

The method of existing removal burr is generally with pneumatic tool driving countersink and rotates and the mode that cut in the aperture is removed burr.Pneumatic tool is a kind of instrument take compressed air as power source, and it can be converted to the mechanical rotation energy with compressed-air actuated kinetic energy, and can and then adjust rotating speed by the compressed-air actuated air inflow of valve regulated.

The pneumatic tool great majority that Vehicles Collected from Market is sold use single pressure bar type valve control, namely come adjusting rotary speed by the dynamics of pressing pressure handle.But in operation process, usually need to hold pneumatic tool with position and the cutting dynamics of control countersink, operating personnel also can press pressure handle synchronously when dynamics is held in increasing with a firm grip in this case, the faster rotational speed that will cause countersink in case overexert, cause easily the cutting transition, and reduce the position that dynamics is difficult to control countersink.

The utility model content

The utility model provides a kind of boring deburred instrument, can rely on rotate to regulate the countersink rotating speed, thereby avoid that the rotating speed to countersink impacts in control countersink position.

In order to achieve the above object, the technical solution of the utility model is achieved in that boring deburred instrument, comprises countersink, knob and shell; Be provided with main shaft, stator, adjustment sheet and air motor in the described shell;

Described stator is divided into two parts with described shell; The position of departing from its central shaft on the described stator is provided with eccentric air admission hole; Described adjustment sheet and the coaxial setting of described stator and bonded to each other; Be provided with on the described adjustment sheet along its axially extended air admission hole; Be provided with air intake duct on the described adjustment sheet; One end of described air intake duct communicates with described air admission hole, and the other end can communicate with described eccentric air admission hole when described adjustment sheet edge rotates in a circumferential direction to the precalculated position;

Be provided with total air inlet, total gas outlet on the described shell and along its bar hole that circumferentially arranges; Be provided with connector in the described bar hole; Described knob is arranged on the outside of described shell, and is fixedly connected with described adjustment sheet by described connector; Described air motor is arranged on described stator away from a side of described adjustment sheet; The air inlet of described air motor communicates with described eccentric air admission hole; The gas outlet of described air motor communicates with described total gas outlet; Described total air inlet communicates with described air admission hole; One end of described main shaft is connected with described air motor, and the other end stretches out described shell and is connected with described countersink is dismountable.

Further, in the aforesaid boring deburred instrument, also be provided with planetary reduction gear in the described shell; Described main shaft is connected by described planetary reduction gear with described air motor; Wherein, the output of described air motor is connected with the input of described planetary reduction gear; The output of described planetary reduction gear is connected with described main shaft.

Further, in the aforesaid boring deburred instrument, the output of described planetary reduction gear is connected with the limiter assembly that the output of planetary reduction gear produces circumferential displacement by being used for limiting described main shaft with described main shaft.

Further, in the aforesaid boring deburred instrument, the first polygon projection that described limiter assembly comprises the first polygon groove of the output that is arranged on described planetary reduction gear and is arranged on an end of described main shaft and matches with described the first polygon groove.

Further, in the aforesaid boring deburred instrument, also comprise push rod, plug and be used for making described plug can prop up the first spring of described air admission hole;

Described air admission hole and the coaxial setting of described adjustment sheet; Described plug matches with the end of described air admission hole away from described stator;

Described push rod and described planetary reduction gear and the coaxial setting of described air motor; The first polygon projection on one end of described push rod and the described main shaft offsets, and the middle part is passed described planetary reduction gear and described air motor successively, and the other end and described plug offset;

One end of described the first spring is connected with described plug, and the other end is fixedly connected with described shell.

Further, in the aforesaid boring deburred instrument, also be provided with the second spring between the output of described main shaft and described planetary reduction gear.

Further, in the aforesaid boring deburred instrument, described total air inlet and described total gas outlet all are arranged on described shell away from a side of described main shaft; And described total air inlet is all parallel with the axis of described stator with the axis of described total gas outlet; Wherein, described total air inlet is positioned at the center, and described total gas outlet is the annular section around described total air inlet;

There is an annular gap between described air motor and the described shell; The gas outlet of described air motor is communicated with described annular gap; Described annular gap is communicated with described total gas outlet by many escape pipes.

Further, in the aforesaid boring deburred instrument, described main shaft is provided with the second polygon groove away from an end of described air motor; The afterbody of described countersink is provided with the second polygon projection with described the second polygon groove fit.

Further, in the aforesaid boring deburred instrument, described air intake duct comprises the groove on the sidewall that is arranged on described adjustment sheet and the applying of described stator.

Further, in the aforesaid boring deburred instrument, be provided with handguard on the described shell; Described handguard stretches out between the position and described knob of described shell at described main shaft.

Compared with prior art, boring deburred instrument described in the utility model is by arranging stator and adjustment sheet, the cooperate degree of regulating between air intake duct and the eccentric air admission hole by the mode of rotation just can play the function of regulating compressed-air actuated air inflow, and then regulates the rotating speed of countersink.The mode of this adjusting air inflow quantity can not change because of operating personnel's the dynamics of holding with a firm grip and change air inflow, thereby can not change the rotating speed of countersink yet.So just, will adjust the countersink position and adjust the countersink rotating speed fully independent, not influence each other, and can improve machining accuracy and processing safety.

In addition, boring deburred instrument provided by the utility model also has following technique effect:

(1) can reduce air tool output speed by planetary reduction gear is set, the easier quilt of countersink is controlled.

(2) be to be connected with the limiter assembly that the output of planetary reduction gear produces circumferential displacement by being used for the restriction main shaft by the output with planetary reduction gear with spindle design, can make things convenient for main shaft to break away from the output of planetary reduction gear and be connected, be convenient to maintenance and replacing.

(3) pass push rod, plug and first spring of planetary reduction gear and air motor by setting, can form the system that another adjusts air inflow, just can make countersink all reach same rotating speed by the mode that countersink is exerted pressure at every turn, use convenient.

(4) can assist the first spring by the second spring is set, the second spring is responsible for main shaft is recoiled to original position, and the performance requirement to the first spring and the second spring is lower like this, is conducive to reduce cost.

(5) by total air inlet and total gas outlet all are arranged on shell away from a side of main shaft, air inlet pipe all is connected with instrument from this side with escape pipe when operation, with the countersink apart from each other, can the operation of countersink not exerted an influence; Operating personnel can not disturbed by air inlet pipe and escape pipe from radially holding instrument yet, and are easy to use.

(6) by away from an end of air motor the second polygon groove being set at main shaft, and in the afterbody setting of countersink and the second polygon projection of the second polygon groove fit, can be convenient to change countersink; The polygon groove matches with the polygon projection and can make countersink and main shaft keep synchronous axially-movable, can not limit again it away from the axially-movable of main shaft simultaneously, can directly pull up when needs are changed countersink, need not more than operation.

(7) countersink and personnel's operating area can be separated by handguard is set, prevent that when operation operating personnel's hand or other position of health from contacting with countersink, improve security.

Description of drawings

In order to be illustrated more clearly in the utility model specific embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in the specific embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the cross section structure schematic diagram of the described boring deburred of the utility model specific embodiment instrument;

Fig. 2 is the cooperation schematic diagram of the described shell of the utility model specific embodiment, stator and adjustment sheet.

Reference numeral: 1-countersink, 2-knob, 3-shell, 4-main shaft, the 5-stator, 6-adjustment sheet, 7-air motor, the eccentric air admission hole of 8-, the 9-air admission hole, 10-air intake duct, the total air inlet of 11-, the total gas outlet of 12-, the 13-bar hole, 14-the first polygon groove, 15-the first polygon projection, 16-push rod, the 17-plug, 18-the first spring, 19-the second spring, 20-annular gap, the 21-escape pipe, 22-the second polygon groove, 23-the second polygon projection, 24-handguard.

The specific embodiment

For making the purpose of this utility model, technical scheme and advantage clearer; the below will carry out clear, complete description to the technical solution of the utility model; based on the specific embodiment in the utility model; those of ordinary skills are resulting all other embodiments under the prerequisite of not making creative work, all belong to the scope that the utility model is protected.

An embodiment of the present utility model provides a kind of boring deburred instrument, comprises countersink, knob and shell; Be provided with main shaft, stator, adjustment sheet and air motor in the described shell;

Described stator is divided into two parts with described shell; The position of departing from its central shaft on the described stator is provided with eccentric air admission hole; Described adjustment sheet and the coaxial setting of described stator and bonded to each other; Be provided with on the described adjustment sheet along its axially extended air admission hole; Be provided with air intake duct on the described adjustment sheet; One end of described air intake duct communicates with described air admission hole, and the other end can communicate with described eccentric air admission hole when described adjustment sheet edge rotates in a circumferential direction to the precalculated position;

Be provided with total air inlet, total gas outlet on the described shell and along its bar hole that circumferentially arranges; Be provided with connector in the described bar hole; Described knob is arranged on the outside of described shell, and is fixedly connected with described adjustment sheet by described connector; Described air motor is arranged on described stator away from a side of described adjustment sheet; The air inlet of described air motor communicates with described eccentric air admission hole; The gas outlet of described air motor communicates with described total gas outlet; Described total air inlet communicates with described air admission hole; One end of described main shaft is connected with described air motor, and the other end stretches out described shell and is connected with described countersink is dismountable.

The cooperate degree of regulating between air intake duct and the eccentric air admission hole by the mode of rotation so just can play the function of regulating compressed-air actuated air inflow, and then regulates the rotating speed of countersink.The mode of this adjusting air inflow quantity can not change because of operating personnel's the dynamics of holding with a firm grip and change air inflow, thereby can not change the rotating speed of countersink yet.So just, will adjust the countersink position and adjust the countersink rotating speed fully independent, not influence each other, and can improve machining accuracy and processing safety.

During implementation, preferably adopt three sword countersinks.According to 3 theories of determining a plane, unique plane can be determined in three edges of three sword countersinks, and the center on this plane is the work centre of countersink, if the sword number is less than three swords, then can't consist of the plane, the work centre of countersink also can't accurately be located; If the sword number is more than three swords, then can determine a plane at any 3, because the restriction of machining accuracy, the edge of countersink can there are differences far from the size at center, so the center on these planes also all is not quite similar, can cause so the inaccurate or work centre in work centre location frequently to replace, cause machining accuracy to reduce.

The part that above-mentioned connector can be connected and fixed knob and adjustment sheet for bolt, screw, connecting rod etc.

In addition, described air intake duct can be designed to be arranged on the groove on the sidewall that described adjustment sheet and described stator fit.Easy to process like this, utilizing the fit-state of stator and adjustment sheet can be a passage with the direct sealing of groove.

In the various embodiments of the utility model, as preferred version, also be provided with planetary reduction gear in the described shell; Described main shaft is connected by described planetary reduction gear with described air motor; Wherein, the output of described air motor is connected with the input of described planetary reduction gear; The output of described planetary reduction gear is connected with described main shaft.

Existing air tool working speed is generally all more than 1500 rev/mins, need operative employee's spirit when carrying out operation to want high concentration under this rotating speed, so that countersink is accurately controlled, countersink just can damage the aperture unless you give your whole attention to it, task difficulty is larger, can reduce air tool output speed by planetary reduction gear is set, the easier quilt of countersink is controlled.

In the various embodiments of the utility model, as preferred version, the output of described planetary reduction gear is connected with the limiter assembly that the output of planetary reduction gear produces circumferential displacement by being used for limiting described main shaft with described main shaft.

During implementation, the first polygon projection that described limiter assembly can comprise the first polygon groove of the output that is arranged on described planetary reduction gear and be arranged on an end of described main shaft and match with described the first polygon groove.

The polygon groove output that can make main shaft and planetary reduction gear that matches with the polygon projection keeps synchronous axially-movable like this, simultaneously can not limit again it away from the axially-movable of main shaft, can make things convenient for main shaft to break away from the output of planetary reduction gear and be connected, be convenient to maintenance and replacing.

In addition, described main shaft also is provided with the second polygon groove away from an end of described air motor; The afterbody of described countersink is provided with the second polygon projection with described the second polygon groove fit.

By away from an end of air motor the second polygon groove being set at main shaft, and in the afterbody setting of countersink and the second polygon projection of the second polygon groove fit, can be convenient to change countersink; The polygon groove matches with the polygon projection and can make countersink and main shaft keep synchronous axially-movable, can not limit again it away from the axially-movable of main shaft simultaneously, can directly pull up when needs are changed countersink, need not more than operation.

In the various embodiments of the utility model, as preferred version, also comprise push rod, plug and be used for making described plug can prop up the first spring of described air admission hole;

Described air admission hole and the coaxial setting of described adjustment sheet; Described plug matches with the end of described air admission hole away from described stator;

Described push rod and described planetary reduction gear and the coaxial setting of described air motor; The first polygon projection on one end of described push rod and the described main shaft offsets, and the middle part is passed described planetary reduction gear and described air motor successively, and the other end and described plug offset;

One end of described the first spring is connected with described plug, and the other end is fixedly connected with described shell.

Push rod, plug and the first spring can form another system that adjusts air inflow, when countersink is exerted pressure, pressure can be passed to plug by main shaft and push rod, thereby plug is broken away from and the contacting of air admission hole, and then make whole inlet channel realize path, and when removing pressure, the first spring can push up back plug original position, again seal air admission hole, stop compressed-air actuated entering.So just need not control air inflow by the rotation trimmer at every turn, as long as knob is immobilized, when each replacing machining hole suspends, plug is closed inlet channel, instrument is in the time-out rotation status, can effectively stop the invalid loss of compressed air, just can make countersink all reach same rotating speed by the mode that countersink is exerted pressure simultaneously at every turn, use convenient.

During implementation, also can be provided with the second spring between the output of described main shaft and described planetary reduction gear.Performance requirement to the first spring and the second spring is lower like this, is conducive to reduce cost.

In the various embodiments of the utility model, as preferred version, described total air inlet and described total gas outlet all are arranged on described shell away from a side of described main shaft; And described total air inlet is all parallel with the axis of described stator with the axis of described total gas outlet; Wherein, described total air inlet is positioned at the center, and described total gas outlet is the annular section around described total air inlet;

There is an annular gap between described air motor and the described shell; The gas outlet of described air motor is communicated with described annular gap; Described annular gap is communicated with described total gas outlet by many escape pipes.

Air inlet pipe all is connected with instrument from this side with escape pipe when operation like this, with the countersink apart from each other, can the operation of countersink not exerted an influence; Operating personnel can not disturbed by air inlet pipe and escape pipe from radially holding instrument yet, and are easy to use.

In the various embodiments of the utility model, as preferred version, be provided with handguard on the described shell; Described handguard stretches out between the position and described knob of described shell at described main shaft.Countersink and personnel's operating area can be separated like this, prevent that when operation operating personnel's hand or other position of health from contacting with countersink, improve security.

During implementation, the radial section that handguard can be made at main shaft is polygonal shape, and instrument polygonal edge when keeping flat can play fixing effect like this, and the instrument that prevents rolls in the placed side.Be optimal selection take the cross section as triangle, because the limit number in cross section is more just near circle, the area that blocks is just larger, and when work operating personnel will be away from realizing behind instrument one segment distance that just can avoid handguard sees countersink, the handguard larger operating personnel of area of blocking need to be also just larger away from the distance of instrument in this case, operation to instrument is also just more difficult, simultaneously owing to wipe countersink with the oblique angle pipe, so the larger judgement for the countersink position in oblique angle is also just more inaccurate, can cause the reduction of machining accuracy.

In addition, in order to reduce the friction between main shaft and the shell, can between main shaft and shell, sliding bearing be set.

For better explaining the utility model, the below provides specific embodiment to describe.

Specific embodiment

It should be noted that at last: above embodiment and embodiment only in order to the technical solution of the utility model to be described, are not intended to limit; Although with reference to aforementioned embodiments and embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned embodiments or embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make essence disengaging the utility model embodiment of appropriate technical solution or the spirit and scope of embodiment technical scheme.