SU1189652A1 - Method of cooling cutting zone - Google Patents
Method of cooling cutting zone Download PDFInfo
- Publication number
- SU1189652A1 SU1189652A1 SU833548785A SU3548785A SU1189652A1 SU 1189652 A1 SU1189652 A1 SU 1189652A1 SU 833548785 A SU833548785 A SU 833548785A SU 3548785 A SU3548785 A SU 3548785A SU 1189652 A1 SU1189652 A1 SU 1189652A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- drill
- coolant
- cutting zone
- drilling
- cavity
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
- B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D59/00—Accessories specially designed for sawing machines or sawing devices
- B23D59/02—Devices for lubricating or cooling circular saw blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/10—Arrangements for cooling or lubricating tools or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
СПОСОБ ОХЛАЖДЕНИЯ ЗОНЫ РЕЗАНИЯ , при котором смазочно-охлаждающую жидкость размещают в полость сверла, отличающийс тем, что, с целью повьшени эффективности , смазочно-охлаждающую жидкость в полости сверла замораживают перед сверлением. (ЛA COOLING METHOD FOR CUTTING AREA, in which a cutting fluid is placed in a drill cavity, characterized in that, in order to increase efficiency, coolant in a drill cavity is frozen before drilling. (L
Description
Изобретение относитс к механиче кой обработке материалов, преимуще ственно к сверлению стекла, керамик асбоцемента, бетона, керамзита и подобных хрупких материалов полыми сверлами,/и может использоватьс в различных отрасл х промьшшенности и в строительстве дл образовани отверстий и получени цилиндрических кернов. Целью изобретени вл етс повышение эффективности охлаждени путе саморегулировани расходом подаваемой в зону резани смазочно-охлаждающей жидкости (СОЖ) за счет заморалсивани размещенной в полости сверла. СОЖ перед сверлением. tia фиг, 1 изображено сверло, под готовленное к сверлению на фиг.2 схема охлаждени зоны резани при сверле ши полым сверлом. Способ реализуетс следующим образом . Перед сверлением полость сверла 1известной конструкции, например трубчатого корончатого алмазного сверла с перфорированной коронкой заполн ют смазочно-охлаждающей жидкостью (СОЖ) 3 известного состава, например, при сверлении силикатного стекла и керамики - водой. Затем СОЖ в полости сверла замораживают. Замораживание производ т известными cnoco6aNtH, например, охлаждением путем помещени сверла в холодильну камеру или орощением легкокип щей жидкостью (хлорэтшюм) . В зависимое ти от конкретных производственных условий могут примен тьс другие способы замораживани - помещение на лед, охлаждение струей жидкой углекислоты и др. После замерзани СОЖ в полости сверла известным способом, например подачей вращающегос сверла на изде лие или подачей вращающегос издели на неподвижное сверло, производ т сверление. Ниже приводитс пример подачи вращающегос издели на неподвижное сверло. При контакте вращающегос издели 4 с замерзшей СОЖ последн начинает плавитьс , охлажда сверло и коронку 2. При сверлении коронка 2обрааует в изделии 4 кольцевой канал 5 и керн 6. При подаче издели 4 на сверло 1 по стрелке А кер 22 6 давит на замерзпгую СОЖ в полости сверла 1. Вследствие этого давлени и трени СОЖ о поверхность вращающегос керна 6 замерзша СОЖ при сверлении непрерывно плавитс , поглоща тепло, выдел ющеес в зоне резани в кольцевом канале 5. Жидка СОЖ непрерывно вьщавливаетс из полости сверла 1 керном 6. Следствием возникающего эффекта вьщавливани СОЖ из полости сверла в кольцевой канал 5 вл етс интенсивное орошение коронки 2 холодной (имеющей температзфу плавлени ) СОЖ. Другое следствие эффекта вьщавливани - создание повышенного давлени СОЖ в зоне резани . При сверлении отверсти диаметром 11,3 мм с площадью 1,О см и усилии прижима сверла к изделию в пределах 40-60 кгс давление СОЖ в зоне резани с учетом потерь на истечение СОЖ через кольцевой канал мелоду коронкой и стенками отверсти составл ет не менее 20-30 кгс/см. Кроме того, при сверлении возникает и другой эффект. Вначале СОЖ находитс в замкнутом объеме полости сверла 1. При прижиме сверла 1 к изделию 4 давление на замерзшую СОЖ вызывает ее плавление. Истечение СОЖ из полости сверла возможно только через кольцевой канал между коронкой 2 и изделием 4, имеющий посто нное сечение. Поэтому при изменении усили прижима сверла 1 к изделию 4 происходит соответствующее изменение скорости плавлени СОЖ. При увеличении усили прижима давление на замерзшую СОЖ возрастает, плавление происходит быстрее (свойство льда плавитьс при повьплении давлени ) и сверло охлаждаетс интенсивнее . При сниже1-ши усили прижима скорость плавлени СОЖ уменьшаетс . Таким образом, при сверлении с охлаждением по предлагаемому способу имеет место эффект саморегулировани интенсивности теплоотвоДа из зоны резани с изменением силы резани и соответственно контактной температуры, что позволит повысить качество обработки за счет исключени прижогов и следов оплавлени на издели х.The invention relates to the mechanical processing of materials, mainly drilling of glass, asbestos ceramics, concrete, expanded clay and similar fragile materials with hollow drills, and can be used in various industrial areas and in construction to create holes and obtain cylindrical cores. The aim of the invention is to increase the cooling efficiency by self-regulating the flow of coolant supplied to the cutting zone by freezing the drill placed in the cavity. Coolant before drilling. The tia of FIG. 1 shows a drill prepared for drilling in FIG. 2 a scheme for cooling the cutting zone when drilling with a hollow drill. The method is implemented as follows. Before drilling, the cavity of the drill of a known construction, for example, a crown diamond drill bit with a perforated crown, is filled with coolant 3 with a known composition, for example, when drilling silicate glass and ceramics with water. Then coolant in the cavity of the drill is frozen. Freezing is carried out with known cnoco6aNtH, for example, by cooling by placing the drill in a refrigerator or by irrigating with a boiling liquid (chloretherm). Depending on the specific production conditions, other methods of freezing can be applied - placing on ice, cooling with a stream of liquid carbonic acid, etc. After freezing the coolant in the cavity of the drill in a known manner, for example, rotating the drill bit on the product or feeding the rotating product to the fixed drill, t drilling. The following is an example of applying a rotating product to a stationary drill. When the rotating product 4 contacts the frozen coolant, the latter begins to melt, cool the drill bit and the crown 2. When drilling the crown 2, the product 4 draws an annular channel 5 and core 6. When the product 4 is fed to the drill 1 in arrow A, the core 22 6 presses on the frozen coolant drill cavity 1. Due to this pressure and friction, the coolant against the surface of the rotating core 6 freezing coolant during drilling continuously melts, absorbing heat generated in the cutting zone in the annular channel 5. Liquid coolant continuously withdrawn from the drill cavity with 1 core 6. The resultant present effect vschavlivani coolant from the cavity of the drill in an annular channel 5 is intense cold crown irrigation 2 (having a melting temperatzfu) emulsion. Another consequence of this effect is the creation of an elevated coolant pressure in the cutting zone. When drilling a hole with a diameter of 11.3 mm with an area of 1 cm, O cm and the force of pressing the drill to the product within 40-60 kgf, the pressure of the coolant in the cutting zone, taking into account losses due to the flow of coolant through the annular channel to the crown and hole walls, is at least -30 kgf / cm. In addition, another effect occurs during drilling. Initially, the coolant is in a closed volume of the cavity of the drill 1. When the drill 1 is pressed against the product 4, the pressure on the frozen coolant causes it to melt. Coolant outflow from the drill cavity is possible only through an annular channel between the crown 2 and product 4, which has a constant cross section. Therefore, when the force of pressing the drill 1 to the product 4 changes, a corresponding change in the rate of the coolant coolant occurs. With an increase in the pressing force, the pressure on the frozen coolant increases, melting occurs faster (the property of ice to melt when the pressure increases) and the drill cools more intensively. By reducing the pressing force, the rate of melting of the coolant decreases. Thus, when drilling with cooling according to the proposed method, the effect of heat intensity from the cutting zone occurs with a change in the cutting force and, accordingly, the contact temperature, which will improve the quality of processing by eliminating burns and traces of fusing on the products.
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Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU833548785A SU1189652A1 (en) | 1983-02-07 | 1983-02-07 | Method of cooling cutting zone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU833548785A SU1189652A1 (en) | 1983-02-07 | 1983-02-07 | Method of cooling cutting zone |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1189652A1 true SU1189652A1 (en) | 1985-11-07 |
Family
ID=21048396
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU833548785A SU1189652A1 (en) | 1983-02-07 | 1983-02-07 | Method of cooling cutting zone |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1189652A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992001542A2 (en) * | 1990-07-25 | 1992-02-06 | Tyrolit Schleifmittelwerke Swarovski K.G. | Cutting tool |
US5103701A (en) * | 1991-04-01 | 1992-04-14 | The United States Of America As Represented By The United States Department Of Energy | Diamond tool machining of materials which react with diamond |
-
1983
- 1983-02-07 SU SU833548785A patent/SU1189652A1/en active
Non-Patent Citations (1)
Title |
---|
Авторское свидетельство СССР 812527, кл. В 23 Q 11/10, 1978. * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1992001542A2 (en) * | 1990-07-25 | 1992-02-06 | Tyrolit Schleifmittelwerke Swarovski K.G. | Cutting tool |
US5103701A (en) * | 1991-04-01 | 1992-04-14 | The United States Of America As Represented By The United States Department Of Energy | Diamond tool machining of materials which react with diamond |
WO1992017315A1 (en) * | 1991-04-01 | 1992-10-15 | United States Department Of Energy | Diamond tool machining of materials which react with diamond |
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