2 electric drill. In their certain subject such as the manufacturing or fabrication subject , the students will given a task and project that needed to be completed in a certain time given by the lecturer. In University Teknikal Malaysia Melaka (UTeM), the students from first and the second year will needed to take the manufacturing practice subject and they will needed to do a project in a group. The majority project or task that been made by the students will involving drilling process which is the student will have to use drillpress or the portable electric drill.
3. While holding the motor toward the front of the drillpress head, position the belt (C) on the desired steps of the motor and spindle pulleys, as shown in Fig. 16. 4. After the belt is positioned on the desired steps of the motor and spindle pulleys, pivot motor away from the drillpress head until the belt is properly tensioned and tighten tension lock knob (B) Fig. 17. The belt should be just tight enough to prevent slipping. Excessive tension will reduce the life of the belt, pulleys and bearings. Correct tension is obtained when the belt (C) can be flexed about 1" out of line midway between the pulleys using light finger pressure.
It is of great importance to ensure that one end of the tube section (from here on referred to as the case) is perfectly square. To achieve this the case is placed in a drillpress and the spinning case lowered onto a flat file, as illustrated in the above photo. It should be noted that the drill chuck should be tightened by hand only so as not to distort the roundness of the case. This method of case trimming is just as accurate as using a small lathe and no different in principle to the case trimmers used in conventional re-loading practices.
With this one piece equipment you can drill, cut, grind, and polish. An angle grinder is excellent choice for small jobs, outside jobs, drilling hard to reach places, or when drilling a very large piece of material. An excellent alternate, where use of a conventional drillpress is not feasible. Angle grinders can run up to 10,000 rpm. Water swivel adapters specially designed to fit all popular angle / hand held grinders can extend the capability of your angle grinder by supply coolant through center of your diamond drills or many other diamond tools. Giving your angle grinder and diamond drills to accomplish improved efficiency, drilling speed, and surface quality finish.
The improved drill from wear test is made which geometry parameters are selected. The improved PCB drill proves better performance by measuring the flank wear. Its life is obviously longer than the standard drill from the wear test results in Figure 6. The improved drill’s wear is only half of the standard one after drilling 3000 holes. The improved drill’s flank and corner wear is obviously less the standard one by the figure. It is because the drill’s outer corner is grinded to reduce the friction between drill outer margin with the hole wall. In this way, the friction’s heat is reduced and improve the hole wall quality. The cutting heat is difficult to release for the drilling in the semi-hermetic processing. The chips in drilling PCB is mostly the continuous floccule which is different from the fragmented chip in drilling cast iron. Its main component is resin and combined with the breaking glass fiber. This type chip is easy to melt and stick to the cutter and block the flutes which lead the poor chip removing and high cutting temperature, so the cutter wear is intensified. The chip dividing groove’s effect is mainly the chip breaking and transporting. Grinding two V type grooves on the main cutting edge, the whole edge is broken into 4 shorter edges. The chips width reduces so that the chip is easy to break and the main edge loading is lower and chip is easy to bring out.
Further, our beliefs about the scope of use should be reconsidered, because when one examines how people use the artefacts, this does not always correspond with what the artefact is supposed to do. It is important to be aware of this because we, by design, can change attitudes towards not only the product but also the activity, and thus create behavioural change (if desirable). Swedish architect and writer, Lars Mikael Raattamaa (2007), compares the changing of product language in our study to cross-dressing, which is the wearing of clothing and other accessories commonly associated with another gender. People that cross-dress, often feel liberated by expressing emotions that they cannot freely express in clothes designed for their gender. Using the idea of cross-dressing in the design process, the form could be looked at as ‘clothing’ and the function of the artefact as the expected act. Thus, we suggest that the concept form follows function could be changed to function follows form (the expected act follows the clothing). What happens when an artefact borrows another artefact’s ‘costume’? In drag shows, cross- dressing is used in a parodic way to lead spectators to reflect on body. Feminist polemicist and philosopher, Judith Butler, offers parody as a way to destabilise and make apparent the invisible assumptions about gender identity and the inhabitability of such “ontological locales” as gender. By redeploying those practices of identity and exposing the always failed attempts to ‘become’ one’s gender, Butler (1993) believes that a more fluid interpretation of gender can emerge. This study corroborates this thinking (the drill was even described as “ridiculous”), and we believe that the slightly humorous design made it easier for people to move away from their preconceptions and reflect upon their feelings and reactions provoked by the artefacts. Therefore, we would also like to encourage designers to use a sense of humour in their work.
R.S. Taufik  This paper shows study made in design of jigs and fixtures for hydraulic press machine in manufacturing company. The problems were occurring at industry. It is facing the utilization of hydraulic press machine. When the demand has increased it occurs on the gripping or holding the work piece tightly. The main objective is to give a new design of jigs and fixtures for hydraulic press so as to carry out the gripping problem from existing design. Several new design concepts were given and analyze using ANSYS software. The design parameters were presented are maximum deformation, maximum shear stress, number of contact faces, and maximum holding force. Based on the analysis result, the improvement of new jigs and fixtures design for hydraulic press machine was done.
M. Milling machine is designed with six levels of feed rate for manufacturing process, which are 63, 90, 125, 180, 250, and 335 mm/min. With a 0.037 kW motor, the revolution after the gear reduces is 60 rpm. Once the calculations of gear, lead screw, speed and capacity of the motor have been completed, the feed rate is determined. Gear box is designed with transmission units, which can provide 6 levels of feed rates as required when they are in combination. The outcome of this research is a milling/drill machine that has been theoretically designed and calculated. The assembly drawing, which can meet the technical requirements, can be applied to real drill machine. An approach is provided to improve (and design) a drill machine into an ideal drill/milling machine to be used by small or medium sized companies.
The MICON-Drilling GmbH is a member of the MICON group, established in Nienhagen/Germany, in 1994. The privately owned company specializes in the design, production, inspection and repair of drill string compon- ents, drill bits, sophisticated directional drilling systems and additional equipment. Our main focus lies on the technical service for drilling applications in the mining, oil/gas, tunneling and geothermal industries.
Questions perform a variety of functions. The teacher should keep in mind that one function of instrumental questions is to facilitate the teaching process towards the achievement of educational aims. The use of questions as a teaching device should not be considered as being limited to testing. The other important functions of the questions and answer procedure which should be recognized are: in drill work, in review work, in diagnosing the weakness of the students, in directing attention to certain point, in guiding the students in the recitation and participation, in developing or stimulating thinking, and in furnishing incentives to careful preparation such as examination and other test.
The high level of control, feedback, and measurement capabilities of the Drill and Drive End Effector are intended to enable use of the machine as a research tool. This end effector is not intended for production use, but instead for development of a large-scale automated system. The several precision process adjustments and measurements that can be made are useful in exploring the field of wing automation. The outcome of research in the area is useful for specifying and designing a production tool.
composites. The numerical results provide the strong relationship with the experimental values. Rahme et al.  developed the FE model to determine the critical thrust force for delamination using a failure mechanics approach. The shape of the drill point geometry effects the delamination during drilling of FRP. Bhattacharyya and Horrigan  developed the FE model to analyze the drilling behavior by using the LUSAS software. The FE drilling was carried out using backing plate and without backing plate. In accordance with the experi- mental results, the FE model predicts a lower value of the delamination load compared with that predicted by the model which ignores the shearing action. Durao et al.  studied the delamination during drilling of CFRP laminates using the FE method. Two different simplified drill point geometries i.e. Twist drill and C-shape drill were considered. It was observed that the FE model was not able to evaluate the effect of the op- erating parameters (cutting speed and feed rate) on the thrust force and torque. Singh et al.  developed a FE model for predicting the drilling characteristics of UD-GFRP laminates. It was concluded that the thrust force depends upon the drill point geometry and the feed rate, and increases with the increase in both the point angle and the feed rate. In the present research endeavor, a FE model has been developed using a standard FE package (ABAQUS). The investigation focuses on the drill point geometry as an important pa- rameter which governs the drilling induced damage.
Other equipment used in addition to the drilling machine are four axes piezoelectric type Kistler drill dynamometers and their auxiliary devices for measuring machining forces. Thus, the measurement set up combination consists of a Kistler–9272 drill dynamometer, Kistler–5070A amplifier and computer. When machining, the signal produced by the dynamometer related to the thrust force and torque is transferred by RS–232 connection to the computer. The data acquisition process is performed using a program called as DynoWare written by Kistler Co. In the drilling of GFRP samples, DIN 338 HSS drills
Barrie et al. (2002) published results of a relogging and assaying study of the drill cores from the Marathon deposit, observing that the primary magmatic textures are common in all of the mineralized zones. They proposed that the initial melt enrichment was due to the accumulation of immiscible sulphides in a magmatic system. As observed by previous researchers, they have reported that the very coarse to pegmatitic gabbros contain disseminated primary magmatic sulphides and has replacement textures of silicate minerals. Barrie et al. (2002) propose a zone defining model where the intrusion of the gabbro caused a release of volatile rich fluids from a felsic volcanic source to become enriched in sulphur and precipitate chalcophile elements in the coarse grained to pegmatitic textures. The authors also stated that the lithological divisions which were mainly based on the textural evidence alone do not provide sufficient criteria for separating out intrusions as there were no chemical, isotopic, mineralogical or temporal distinctions between the pegmatitic gabbros and medium grained gabbro. They recommended against the use of ‘Two Duck Lake Gabbro’ for the pegmatitc hosts of mineralization (Barrie et al., 2002).