SU929404A1

SU929404A1 - Sharpening machine

Info

Publication number: SU929404A1
Application number: SU803213914A
Authority: SU
Inventors: Вадим Александрович Олехнович; Анатолий Михайлович Зиндер; Николай Валентинович Москалев; Аркадий Александрович Васильев; Анатолий Яковлевич Маркашанский
Original assignee: Витебское Специальное Конструкторское Бюро Зубообрабатывающих Шлифовальных И Заточных Станков
Priority date: 1980-10-31
Filing date: 1980-10-31
Publication date: 1982-05-23

Description

(54) ЗАТОЧНОЙ СТАНОК(54) GRINDING MACHINE

1one

Изобретение относитс к обработке металлов резанием и может быть использовано дл плоскостной заточки сверл малого диаметра .The invention relates to metal cutting and can be used for flat grinding of small diameter drills.

Известен станок дл заточки сверл малого диаметра, содержащий основание с установленными на нем шлифовальной головкой и подвижными салазками с поворотным столом, несушим полукольцо, оптическое устройство , держатель инструмента и механизм делени , включающий делительный диск с фиксаторной втулкой 1.A known machine for sharpening small-diameter drills, comprising a base with a grinding head and a movable slide with a rotary table, a dry half ring, an optical device, a tool holder and a dividing mechanism, including a dividing disc with a locking sleeve 1, mounted on it.

Недостатком известного станка вл етс то, что пересечение осей настройки на задние углы и угол при вершине с осью сверла в одной точке достигаетс в данном станке технологически сложной выставкой, что сказываетс на его производительности и качестве заточки.The disadvantage of the known machine is that the intersection of the axes of adjustment to the rear corners and the angle at the apex with the axis of the drill at one point is achieved in this machine by a technologically complex exhibition, which affects its productivity and sharpening quality.

Цель изобретени - повышение производительности и качества заточки.The purpose of the invention is to increase the productivity and quality of sharpening.

Указанна цель достигаетс тем, что оптическое устройство смонтировано на полукольце соосно с держателем инструмента, при этом упом нутое полукольцо установлено на введенных в станок опорных пальцах, одинThis goal is achieved by the fact that the optical device is mounted on a half-ring coaxially with the tool holder, while the said half-ring is mounted on the supporting fingers inserted into the machine, one

из которых выполнен в виде эксцентрика, а механизм делени установлен непосрдственно на держателе инструмента и снабжен направл ющей скалкой.of which is made in the form of an eccentric, and the division mechanism is installed directly on the tool holder and provided with a guide rolling pin.

На фиг. 1 изображено устройство, про дольный разрез; на фиг. 2 - то же, поперечный разрез.FIG. 1 shows a device for longitudinal section; in fig. 2 - the same cross section.

Станок содержит основание 1, на верхней части которого установлены салазки 2. На салазке 2, на опорах качени установлен по10 воротньш стол 3, с помощью которого вокруг оси А-А осуществл етс его поворот на задние углы. Фиксируетс поворот подпружиненными фиксаторами 4. На столе 3 симметрично относительно оси А-А расположены два опорных пальца 5 и 6, вл ющихс опоройThe machine contains a base 1, on the upper part of which a slide 2 is installed. On the slide 2, on the rolling supports there is installed a gate table 10, with which it is rotated to the rear corners around axis A-A. The rotation is fixed by spring-loaded clips 4. On the table 3, two support fingers 5 and 6 are located symmetrically about the axis AA, which are the support

полукольца 7. Палец 6 выполнен в виде эксцентрика . Полукольцо разворачиваетс вокруг оси В-В на угол при верщине затачиваемого сверла, опира сь опорной поверхностью D на пальцы 5 и 6. Фиксаци поворота полу20 кольца 7 производитс с помощью зажима (не показан). half rings 7. Finger 6 is designed as an eccentric. The semi-ring is rotated around the B-B axis at an angle when the drill bit is being machined, resting on the support surface D on the fingers 5 and 6. The rotation of the half of the ring 7 is fixed by means of a clamp (not shown).

Claims

In the bores of the semi-ring 7, the optical device 8 is coaxially fixed on one side, on the other side there is a fixed case 9 of the workhead, inside of which there is a holder 10 with a collet 11 and a ramrod 12, which has the possibility of axial movement (feed movement) using a micrometer screw 13 and rotation around the axis BB (drill orientation and division) .. The holder 10 has a dividing mechanism fixed, consisting of a long disk 14 mounted directly on the holder 10 and made with the possibility of joint axial movement with m and spring-loaded retainer 15 located in the hub detent plunger 16. The guide 17 is fixed in the fission disc 14 and prevents the latter from rotating. A set of springs 18 symmetrically located with respect to the product axis ensures constant clamping of the holder 10 to the movable part of the micrometer screw 13. The latter is rigidly attached to ring 7 by means of the clamp 19. The grinding spindle and the electric motor are mounted in the housing of the grinding head 20, which has the ability to swing on arrow G around the axis 21 fixed on the base 1. The working end of the grinding wheel is aligned with the axis A-A by moving the slide 2 with the table 3 along the grinding axis Rugas by rotating the handwheel 22. The intersection of the pivot axis A-A of the rear corners, the pivot axis B-B of the apex angle and axis B-B in one sharpened drill point is achieved as follows. 1. The intersection of the axes B-B and B-B is determined by the E5 construction of the semiring 7, in which the axis of the bore under the housing 9 and the optical device 8 intersects with the axis of the supporting surface D of the semiring 7. At the same time, the technological opening E is made in the latter, the axis of which intersects with the axis product and the axis of the surface.

2. A cylindrical mandrel (not shown) is inserted into the hole E of the half-ring 7 and the hole G of the angle 3 (the axis of the hole F corresponds to the axis of UNITA AA of table 3). The compensators 23 are fitted. Then, turning the eccentric support finger 6, the support surface D of the half ring 7 of both support fingers 5 and 6 is touched. After that, the eccentric finger 6 is fixed against rotation. The sharpening of the drill on the proposed machine is carried out as follows. The drill is installed in the collet 11 and with the help of a special folding rest, not shown), they are positioned along the length so that the drill tip lies on axis A-A. Then the drill is clamped with a ramrod 12. Unlocking the locking sleeve 16 of the dividing mechanism with the holder 10 with the button 24, rotate the latter and align the drill with the cross of the optical device 8, then fix the sleeve 16 with the holder 10 again, then the semi-ring 7 rotates around the B-axis at the tip angle of the drill and fixed with a clip (not shown). Table 3 is turned around axis A-A to the main rear angle until the spring-loaded latch 4 is fixed. The drill is fed to the grinding wheel using a micrometer screw 13. By swaying the grinding head 20 around the axis 21, remove the allowance from the main back surface of the first pen. Then, the table 3 is rotated to the auxiliary rear angle to fixation 1; and the second spring-loaded latch 4 (the grooves under the latch 4 in Fig. 1 are conventionally depicted in the same plane) and the seam allowance is removed from the auxiliary rear surface of the first feather, after which the first feather is processed drill is finished. To sharpen the second pen of the drill, it is necessary to make a division (turn of the drill around its axis BB by 180 °), which consists in turning the holder 10 with the drill, with which the sleeve 16 with the spring-loaded latch 15 turns to the last in the radial groove of the separating disc 14 After dividing, one and the second back surfaces of the second pen are sharpened. Thus, the invention improves the productivity and quality of the sharpened tool (drill), simplifies the design, assembly and debugging of the machine. An inventive tool grinding machine for small-diameter drills, comprising a base with a grinding head and movable slide with a rotary table carrying a half-ring mounted on it, an optical device tool holder and a dividing mechanism including a dividing disc with a locking sleeve, characterized in that sharpening performance and quality, the optical device is mounted on a half-ring coaxially with the tool holder, while the said half-ring is mounted on the The support fingers, one of which is designed as an eccentric, and the dividing mechanism are mounted directly on the tool holder and provided with a guide rolling pin. Sources of information taken into account in the examination 1. Prospect of the machine model 05-8 of the company Christen (Switzerland), 1979.

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