Back boring tool

Abstract

The invention discloses a back boring cutter, which comprises a cutter bar and a cutter body arranged on the processing side of the cutter bar. A groove for accommodating a recovered cutter body is opened on the outer peripheral surface of the cutter bar. The cutter body is rotatably assembled on the In the cutter groove, the axis of rotation of the cutter body is parallel to and deviated from the axis of the cutter rod; a detent mechanism is provided between the cutter body and the cutter rod, and the detent mechanism is formed by a card slot separately arranged on the cutter body and the cutter rod. It is composed of a wedge that is slidably matched with the card slot. The wedge is connected with the inertial drive mechanism through the telescopic rod that is connected to the drive. The telescopic rod is provided with a reset mechanism; the inertial drive mechanism includes a one-way The driving cam and the eccentric inertial block fixedly connected with the cam, the driving wedge of the eccentric inertial block makes the cutter body break away from the anti-rotation state, and the trend of inertia deviation is the same as the tendency of the cutter body's inertia recovery. The anti-boring cutter of the present invention realizes the recovery and opening of the cutter body by rotating it in the reverse direction and the forward direction, and is very convenient to use.

Description

technical field

[0001] The invention relates to a counter-boring cutter, which belongs to the technical field of mechanical processing equipment. Background technique

[0002] In the field of boring machine processing technology, for some workpieces with stepped holes on the inner wall, it is necessary to use a back boring tool for processing. At present, the traditional back boring tool has a simple structure, such as figure 1 As shown, a cutter bar 43 is included, and a cutter body 41 protruding from the peripheral surface of the cutter bar is provided on the processing side of the cutter bar 43 , and a cutter head 44 is fixedly connected to the end of the cutter body 41 . During processing, the cutter body 41 is first removed, and then the cutter bar 43 is inserted into the wall hole of the workpiece 40, and then the cutter body 41 is installed on the cutter bar 43, and the cutter head is driven to process on the inner wall of the workpiece by the rotation of the cutter ...

Examples

Embodiment 1

[0033] The back boring tool of the present invention is as figure 2 , 3 , Shown in 4, including the cutter bar 1 and the cutter body 2, the cutter body 2 is arranged on the processing side of the cutter bar 1. Knife bar 1 is made of knife bar body 3 and the end block 12 that is fixedly connected at the front end of knife bar body 3, and knife bar body is as Image 6 , 7 As shown, end blocks such as Figure 8 , 9 As shown, the rear end of the tool body 3 is provided with a flange 5 for connecting with the motor and a cavity 6 for accommodating the inertial drive mechanism, and a gap 4 is opened at the front end, and the gap 4 is formed together with the inner wall of the end block for accommodating The slit 7 of the cutter body 2; the lower side of the cutter body 3 is provided with a long hole 8 connecting the cavity 6 and the gap 4, and the end block 12 is provided with a shaft hole 9 corresponding to the long hole 8. Slotted hole 8 front and back respectively is insert...

Embodiment 2

[0040] The structure of the anti-boring tool of this embodiment is basically the same as that of Embodiment 1, the difference is that this embodiment uses a bidirectional drive cam to replace the unidirectional drive cam in Embodiment 1—the fan-shaped cam 18. The so-called bidirectional drive cam can drive telescopic The cam of the two-way (telescopic) movement of the rod, the two-way driving cam of the present embodiment adopts the following Figure 14 As shown in the cylindrical cam 30, the cylindrical surface of the cylindrical cam 30 is provided with a curved groove 32, and the rear end of the telescopic rod 11 is provided with a crank arm 31 that matches the curved groove 32, and the end of the crank arm 31 is provided with a roller 33 .

[0041] When the back-boring tool of this embodiment is working, the rotation of the cylindrical cam drives the reciprocating movement of the telescopic rod, and no return spring is needed to provide the reset power of the telescopic rod...

technical field

[0001] The invention relates to a counter-boring cutter, which belongs to the technical field of mechanical processing equipment. Background technique

[0002] In the field of boring machine processing technology, for some workpieces with stepped holes on the inner wall, it is necessary to use a back boring tool for processing. At present, the traditional back boring tool has a simple structure, such as figure 1 As shown, a cutter bar 43 is included, and a cutter body 41 protruding from the peripheral surface of the cutter bar is provided on the processing side of the cutter bar 43 , and a cutter head 44 is fixedly connected to the end of the cutter body 41 . During processing, the cutter body 41 is first removed, and then the cutter bar 43 is inserted into the wall hole of the workpiece 40, and then the cutter body 41 is installed on the cutter bar 43, and the cutter head is driven to process on the inner wall of the workpiece by the rotation of the cutter ...

Examples

Embodiment 1

[0033] The back boring tool of the present invention is as figure 2 , 3 , Shown in 4, including the cutter bar 1 and the cutter body 2, the cutter body 2 is arranged on the processing side of the cutter bar 1. Knife bar 1 is made of knife bar body 3 and the end block 12 that is fixedly connected at the front end of knife bar body 3, and knife bar body is as Image 6 , 7 As shown, end blocks such as Figure 8 , 9 As shown, the rear end of the tool body 3 is provided with a flange 5 for connecting with the motor and a cavity 6 for accommodating the inertial drive mechanism, and a gap 4 is opened at the front end, and the gap 4 is formed together with the inner wall of the end block for accommodating The slit 7 of the cutter body 2; the lower side of the cutter body 3 is provided with a long hole 8 connecting the cavity 6 and the gap 4, and the end block 12 is provided with a shaft hole 9 corresponding to the long hole 8. Slotted hole 8 front and back respectively is insert...

Embodiment 2

[0040] The structure of the anti-boring tool of this embodiment is basically the same as that of Embodiment 1, the difference is that this embodiment uses a bidirectional drive cam to replace the unidirectional drive cam in Embodiment 1—the fan-shaped cam 18. The so-called bidirectional drive cam can drive telescopic The cam of the two-way (telescopic) movement of the rod, the two-way driving cam of the present embodiment adopts the following Figure 14 As shown in the cylindrical cam 30, the cylindrical surface of the cylindrical cam 30 is provided with a curved groove 32, and the rear end of the telescopic rod 11 is provided with a crank arm 31 that matches the curved groove 32, and the end of the crank arm 31 is provided with a roller 33 .

[0041] When the back-boring tool of this embodiment is working, the rotation of the cylindrical cam drives the reciprocating movement of the telescopic rod, and no return spring is needed to provide the reset power of the telescopic rod...

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