CNC tools nikken (2)

Ngày tải lên: 28/03/2014, 09:20

... hệ truyền động máy CNC Hệ truyền động điện máy CNC đảm nhận chuyển động theo trục Tín hiệu điều khiển cho hệ truyền động lấy từ nội suy đóng vai trò tín hiệu đặt Hình 1.1 Cấu trúc hệ truyền động ... vị trí Hệ thống truyền động bắt buộc phải đảo chiều Hình 2. 2 sơ đồ cấu trúc hệ điều khiển vị trí sử dụng động điện chiều t Q...

Ngày tải lên: 13/05/2014, 20:54

... boundary, Comput Methods Appl Mech Eng 92( 3): 26 9 28 8 SmoothViz: Visualization of SmoothedData SmoothViz: Visualization of Smoothed Particles Hydrodynamics Particles Hydrodynamics Data 27 25 Gingold, ... 64% 72% 80% 0 .27 8 0 .27 8 0 .27 8 3.79% 3.68% 3. 62% 0.06% 0.06% 0.07% 72% 72% 72% 0 .25 0 0 .27 8 0.306 4.64% 3.68% 2. 97% 0.06% 0.06% 0.06% Table Valuable particle liberatio...

Ngày tải lên: 19/06/2014, 10:20

... to 20 minutes to complete the machining cycle Time depends on the amount of stock removed, the abrasive used, and the quality required Figure 18.6 shows a production-lapping machine Lap 18 .2. 2 ... occasionally be as coarse as 100 to 28 0 ramic parts and other stain- sensitive mesh More often the ‘flour’ sizes of materials • Used in applications where metal 320 to 800 mesh are used The gri...

Ngày tải lên: 21/07/2014, 15:20

... precision lead screw to produce the of cutting tools Sharpening of a tap is correct pitch, or lead, on a threaded shown in Fig 17.17a and grinding of a part Thread grinding machines also milling ... dressing or truing the Figure 17. 18 shows sharpening of a cutting periphery of the grinding carbide milling cutter with a diamond cup-grinding wheel FIG 17. 12: Typical centerless grindi...

Ngày tải lên: 21/07/2014, 15:20

... to 1000 (very fine) Grain sizes are broadly defined as coarse (6 to 24 ), medium (30 to 60), fine (70 to 180), and very fine (22 0 to 1000) Figure 16.4 shows a comparison of three different grain ... 16.3b and discussed in chapter 1, section 1.5 or pressed into diamond wheels shown in Figure 16 .7 16 .2. 2 Types of Bonds Abrasive grains are held together in a grinding wheel by a bonding mat...

Ngày tải lên: 21/07/2014, 15:20

... Tooling & Production/April 20 02 CHAPTER 15 Saws and Sawing 15.1 Introduction Once sawing was considered a secondary machining process and saws were used mostly for cutting bar stock in preparation ... teeth cutting at one time varies from to 10 or more Saws may be of the continuous cutting (band or rotary) or reciprocating type A typical sawing operation is shown in Figure 15.1 The...

Ngày tải lên: 21/07/2014, 15:20

... capacities ranging from 1 /2 to 75 (b) tons, the former representing machines only about feet long the latter machines over 35 feet long Strokes up to 120 inches are available, with cutting speeds generally ... travel A couple of small broached parts are shown in Figure 14.3 FIGURE 14 .2: A large broach is shown (Courtesy Detroit Broach & Machine Co.) 14 .2. 1 Broaching Tools A broach...

Ngày tải lên: 21/07/2014, 15:20

... be closed with a lever-operated cam or with a large locking nut Figure 13 . 24 a shows various size collets and Figure 13 . 24 b shows a number of tool holders including collets and a set-up fixture ... to make plate cams and to generate a number of other irregular shapes 13 .4. 3 Arbors, Collets, and Tool Holders FIGURE 13 . 24 : (a) Collets of various sizes (Courtesy Lyndex Corp.) (b) Vario...

Ngày tải lên: 21/07/2014, 15:20

... and 30 .5 IPM, what apr and apt would this be? SFPM 400 RPM = 26 2 × d = 26 2 × = 3 82 apr = IPM RPM = 30 .5 3 82 = 080 in apt = apr N = 080 = 010 in Answer: = 080 in apr = 010 in apt When milling a 30 0M ... (containing 10 inserts) at 38 0 SFPM and a 006 inch advance per tooth, what feed rate should be run in IPM? SFPM 38 0 RPM = .26 2 × d = 26 2 × = 24 2 IPM=apt×N×RPM = 006×1...

Ngày tải lên: 21/07/2014, 15:20

... 11 11 .2 This shows the most frequently used style for holes up to inch, called a chucking reamer Solid reamers almost all their cutting with the 45 degree chamfered Cutting 0.004 to 0.0 32 in FIGURE ... straight-fluted taperededge or margin of a reamer Cutting Edge: The cutting edge is these reamers tend to pull shank reamer (Courtesy: Morse Cutting Tools) the leading edge of th...

Ngày tải lên: 21/07/2014, 15:20

... FIGURE 10 .18 : Principal parts of a floortype horizontal boring machine (HBM) FIGURE 10 .16 : Table-type horizontal boring machine (HBM) (Courtesy Summit Machine Tool Manufacturing Corp.) 10 .7 .1 Horizontal ... Figure 10 .19 shows a five-axis ram-style machining center Parts can be clamped to the table and numerically (NC or CNC) positioned to perform a boring operation Cutting Tool...

Ngày tải lên: 21/07/2014, 15:20

... initialized and reset Since the commands M 02 and M03 are executed last, they can be located anywhere within the last block 2. 2 .2 Main Programs and Subprograms 2. 2 .2. 1 Main program A part program ... the standard code 2. 2 Part Program 35 2. 2.1 Program Structure A part program contains the commands, called blocks, for machining a part and each block can be defined u...

Ngày tải lên: 11/08/2014, 20:21

... expressions and statements, and give tutorial examples of how to produce such representations 2. 8.1 Two Kinds of Intermediate Representations As was suggested in Section 2. 1 and especially Fig 2. 4, ... generation, and rely on the code optimizer to eliminate unnecessary instructions 2. 8.5 Exercises for Section 2. 8 Exercise 2. 8.1 : For-statements in C and Java have the for...

Ngày tải lên: 12/08/2014, 11:20

... some of the PHP4 elements that don't typically occur in PHP5 's object-oriented implementation, please consult the phpDocumentor online manual: http://manual.phpdoc.org/ Installing phpDocumentor ... Accountable .php | | Authentication | | ` HardcodedAccounts .php [ 49 ] Download from Wow! eBook www.WoweBook.com Documentation with phpDocumentor | | Authentication .php | ` Users .php ` in...

Ngày tải lên: 12/08/2014, 16:21