SU870003A1 - Apparatus for drilling holes with inclined input - Google Patents

Apparatus for drilling holes with inclined input Download PDF

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Publication number
SU870003A1
SU870003A1 SU792834285A SU2834285A SU870003A1 SU 870003 A1 SU870003 A1 SU 870003A1 SU 792834285 A SU792834285 A SU 792834285A SU 2834285 A SU2834285 A SU 2834285A SU 870003 A1 SU870003 A1 SU 870003A1
Authority
SU
USSR - Soviet Union
Prior art keywords
lever
cradle
axis
tool
drilling holes
Prior art date
Application number
SU792834285A
Other languages
Russian (ru)
Inventor
Сергей Григорьевич Лакирев
Михаил Хемович Гольдфельд
Эльвира Михайловна Гольдфельд
Original Assignee
Челябинский Политехнический Институт Им.Ленинского Комсомола
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Челябинский Политехнический Институт Им.Ленинского Комсомола filed Critical Челябинский Политехнический Институт Им.Ленинского Комсомола
Priority to SU792834285A priority Critical patent/SU870003A1/en
Application granted granted Critical
Publication of SU870003A1 publication Critical patent/SU870003A1/en

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Description

DEVICE FOR DRILLING HOLE
(54) TILTED IN
The invention relates to metal cutting and can be used in drilling, countersinking, and reaming of holes having an inclined entrance. There are known devices for drilling openings with an inclined entrance, including a housing in which a cradle is mounted on the shaft for securing the machined Parts 1. The drawbacks of the devices are the complexity of the design, the possibility of misalignment of the tool movement and rotation of the cradle. The purpose of the invention is to simplify the design, increase the accuracy of the holes and tool life. For this, the device is equipped with a lever-wedge mechanism, the wedge of which is installed with the possibility of simultaneous movement with the tool, and the lever is rigidly connected with the axle of the cradle, and the spring,; FIG. I shows the proposed device; in fig. 2 - view A of FIG. I. A device for drilling holes with an inclined entrance consists of a case I, in which a cradle 3 is mounted on bearings 2 to secure the workpiece 4 fixed by means of a screw 5 and a bar 7 fixed to bolts 6. 8, contacted by a system of levers 9-M, interconnected by fingers 12, and a roller 13, the axis 14 of which is mounted in the lever 15, with the figured surface of the pusher 16. The latter is mounted for axial movement in the guide 17 and is rigidly fixed by bracket 1 8 pp. Pour the machine 19. The levers 11 are mounted on axles 20 fixed to the walls of the guide 17, rigidly connected to the housing. A measuring blade tool, such as a twist drill 21, is rigidly fixed in the spindle of the machine tool 22 and guided along a conductor sleeve 23 installed in the housing I. On the axis of the cradle 3 there is a return spring 24, one end of which is pierced on the case and the other end on lever 8.
The device works as follows.
In the initial position, the input surface of the part 4 is installed perpendicular to the axis of the drill 21. When moving the quill. The machine, under the action of the feed mechanism, is shown down) the twist drill bit, fastened to the spindle 22 and guided by the Conductor bushing 23, will begin to cut its intake cone into the machined dam. Together with the machine tool 19, the pusher 16 fixed in the bore of the guide 17 is lowered and secured with it by means of the bracket. In this case, when roller 13 rolls in, axis 14 of which is installed in lever 15 of the inclined pusher 16, lever 15 HaifHeT moves to the left.
A system of levers 9-11 interconnected by fingers 12 is rotated relative to the axes 20, by means of which the lever I is connected to the walls of the guide. Since the lever 9 is connected to the lever 8 mounted by the tetrahedron on the axis of the cradle 3, moving down the pusher 16 rotates the cradle mounted on the bearings 2 and in the housing I, while twisting the spring 24. Together with the cradle, the workpiece 4 is fixed by screw 5 and bolted on 6 bar 7,
The location of the center of lie of the part (point A), the ratio of the magnitude of the feed of the drill S and the speed of rotation of the part are chosen from the condition of equality of the forces acting on the cutting edges of the drill. The entire rotation of the part at a predetermined angle is carried out during the period the drill enters the workpiece with its intake cone. The time and speed of rotation of the part is determined based on the amount of feed S, the ratio of the arms of levers 8-II and 15, and the length n of the shape of the core section b performed on the pushrod 16. After the passage of the core portion b, the straight line enters the contact 13 the region and and rotation of the part is stopped.
After the drilling is completed, the quill together with the drill 21 and the pusher is retracted to the position; the spring 24 at the same time returns the cradle 3c with the workpiece to its original position. The part is replaced, and the cycle is repeated. In the case of a change in the length of the drill 21, when it is re-threaded or replaced with a new one, the profile section 6 of the pusher 16 is adjusted with respect to the tool intake cone. This adjustment is made by moving the pusher 16 in the opening of the bracket 18 to the required amount, after which the pusher is rigidly attached to the bracket again.
The use of the described device for drilling holes with an inclined entrance simplifies the drive for turning the cradle, improves the machining accuracy and durability of the drills.

Claims (1)

  1. Invention Formula
    A device for drilling holes with a bow inlet, including a housing in which a cradle is mounted on the axis for swinging the cradle to secure the workpieces, characterized in that, in order to simplify the design of the device, improve the accuracy of the holes and tool life , the wedge of which is installed with the possibility of simultaneous movement with the tool, and the lever is rigidly connected with the axis of the yoke, and with a spring and an autolein with one end on the body and the other on the lever of the lever wedge th gear.
    Sources of information taken into account in the examination 1. USSR author's certificate in application No. 2457579 / 25--08. cl. B 23 B 35/00, 1977 ..
      V
SU792834285A 1979-10-30 1979-10-30 Apparatus for drilling holes with inclined input SU870003A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU792834285A SU870003A1 (en) 1979-10-30 1979-10-30 Apparatus for drilling holes with inclined input

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU792834285A SU870003A1 (en) 1979-10-30 1979-10-30 Apparatus for drilling holes with inclined input

Publications (1)

Publication Number Publication Date
SU870003A1 true SU870003A1 (en) 1981-10-07

Family

ID=20856890

Family Applications (1)

Application Number Title Priority Date Filing Date
SU792834285A SU870003A1 (en) 1979-10-30 1979-10-30 Apparatus for drilling holes with inclined input

Country Status (1)

Country Link
SU (1) SU870003A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103286598A (en) * 2013-05-13 2013-09-11 健雄职业技术学院 Drilling fixture
CN105364375A (en) * 2015-12-04 2016-03-02 苏州明远冲压件厂 Electric pressing plate clamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103286598A (en) * 2013-05-13 2013-09-11 健雄职业技术学院 Drilling fixture
CN105364375A (en) * 2015-12-04 2016-03-02 苏州明远冲压件厂 Electric pressing plate clamp

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