Materials science

11- Laboratory work


Metals on ranging stations
1. Get acquainted with the 2A135 stamp structure and work principi.
2. Read the method of calculation of the calculation of the cutting mode.
3. To independently study the adjustment of the machine to dial the given zagattof.

General information.

Carrying out of the stains widely used at machine-building stations, opening (perforations), holes in these stations Assistant internal cards.

The current linear movement of the filling to the decoration tool is carried out as a result of the effects of direct linear movement in the identity. (Fig. 1). The machine stains are used as cutting inserients, zenkers, exploster zent and technicians. The filling machines enter the second group and have several types of types.

1. vertical - vertical filling machine.

2. Gorizontal - parming machines.
3. Radial - finishing machine.
4. SUPPENDED PARTING MEETING.
5. Aggregate filling machine
6. Extension of holes - drafnoy machine and others.
Teletry, Conductor,
It is fastened to a clamped and most common certificates, to the tool and Spindle's house - installed to -patron. The filling is selected depending on the type of instrument diameter, the instrument diameter of the operating material to perform the stantaries, the type of instrument and material of the instrument. Cut mode in compliance works, Cutrolling mode, cutting speed V (m / mm), the cutting depth is t (mm), cutting capacity p (kg), the cutting capacity of cut p (kg), the cutting capture.
Each specific type of work is the cutting mode and selected.
1. Get acquainted with the poster and the machine, 2A135 vertical pinsstage station 2A135, 2A135.
2. Calculate the cut mode for pma to cut a given zagattan.
3. Install the machine calculated to cut the Metalka.

5 Procedure for doing work

Study of the vertical - filling station.
The 2A135 model is the vertical-disposable stage (Figure 2), the most basic and large-scale metal of metal in re retanting basic is designed in the following basic consists of mechanisms and nurses: Fundament plate, column 2 to 1 fixed. The Speed box 6 is located at the top of the column.
Through the speed of the Speed, the head of the SPINDEL performs the main movement with the Instention. The instrument will take the movement of the movement to the Accounts box on Circanen 4. Zakatka is set at 3. Table and bracket is a column.

The Ustanovochny is under the vertical career of 2. The machine's car is an electricity with a 4.5 kW. The number of spindle's cycle is 9, with 68,100,140,1,1,140,195,15,400,50,750,1100 times. The boundaries of the placement of the 11 pushing value are 0.115 to 1.6 mm / Ayl. will be up to.

5.2 Table of Table 5.2 Optional Division For the calculation of the cutting mode for conservation of metals for conservation:
a) is found in the number of spinsid for cutting.
ŋXIS = 100000 * v / p * d o sprigate / minute Here: D-Parma Diamati, mm.
ŋXXis- Shpindel Number of cycles in minute.
V-cutting speed, m / min.
(Carried from the 1-Table 1 table)
b) Reductions close to the calculation number of scales
The availability is accepted from the number of rotations.
¬¬ str = Ayl / min.
c) the number of selected Spindle Types of SPINDEL We determine the intelligence rate of the intelligence:

Vhaq ¬¬¬ = P D L Sst / 1000 m / min.

G) We accept the loss amount near the given delay.
SV = mm / ALL
d) We determine the cuttingat.
t = d / 2 mm (for permashing)
t = d-d0 / 2 mm (to expand the hole)
Here: D0-hole diametir, mm
D-PARMA DIAMEIR, mm.
E) the machine time required to ferm the hole is determined.
TM = l / ŋCnsl = l0 + l1 l2 / ŋCn sb min
Here: a passage of L-Partment passing, MM.
L0 consignment depth, at the expense of MM.
The status length of the L1 Parmacy is the length of the status, its amount at the expense of MM ... ..0.3 D mm
The L2 pan through the passenger passes after perforation is passed. At the expense of MM, the amount of the UNIG is 1 + 3 mm.
SL-push amount mm / iml.
j) determination of depths of cutting in the filling.
P0 = CP * DXP * SYP KG
d) Cash cutting power in fumbling.
NP = mkp * ŋCt / 716.2 1000 * 1.36 kW.
Here are:
It is a rotating momentum caused by NXP.
Mkr = dxm * sum * cm.

In this case,: is a coefficient that takes into account the nature of the Crucing material and is derived from Table 2.

XR, ur, xm, um, performance levels, are received from Table 2.
In the finding the capacity of the machine electrode for cutting, the machine is determined taking the machine's useful work factorature (K.P.D).

Variantlar	1	2	3	4	5	6	7	8	9	10	11
Rejimlar parametirlari
Kesish tezligi V m/min	25	25	24	24	23	22	22	30	30	28	28

Parma diametri d mm	5.0	5.5	6.0	6.0	6.0	6.0	7.0	7.0	7.0	7.0	6.5
Surish S,mm/ayl	0.08	0.09	0.1	0.1	0.09	0.08	0.07	0.08	0.08	0.08	0.07
Parmalash chuqurligi Mm	30	35	40	35	30	30	35	40	30	35	36

12	14	15	16	17	18	19	20	21	22	23	24	25	26
30	25	21.5	22	22	23.0	23	24	24.0	30.0	28.0	33.0	30.5	35.0
6.5	7.5	8	8	8	9	9	9	10	10	10	11	11	11
0.07	007	0.08	0.07	0.07	0.08	0.08	0.07	0.06	0.06	0.06	0.06	0.06	0.07
25	30	35	35	20	35	35	35	40	30	35	40	45	40

Zagatofka materiali ST-3 (kulrang cho`yan) Sm- Sr – Xm – Um – Xr – Ur 40

35

30

Zagatofka materiali ST-3 (kulrang cho`yan)
S_m- S_r – X_m – U_m – X_r – U_r

Jadval №1

Ishlanoyotgan material		Sm	Sr	Xm	Xr	Um	Ur
O`rta qattiqlikdagi konstruktsion po`lat		34	85	1.9	1	0.8	0.7
ChO`YaN	Kulrang NV190	23	60	1.9	1	0.8	0.8
Bolg`alanuvchi NV 150		20	52	1.9	1	0.8	0.8

12- Laboratory work.
Study of the smelting of blanks on a lathe
Purpose of work. The structure of the 1k62 model universal lathe screw shearing machine, acquaintance with the workman billet making a technological card for work, working on it and determining the main time spent.
General information. 1k62 model lathe E, which is produced in industry. N. I. I. M. S. according to its classification, Group 1 belongs to type 6. In this lathe, the outer and inner surfaces of the cylinder, cone, and complex shape are sketched and cut, holes, carvings are opened. And the quality of the detail and the productivity of the work being prepared when cutting billets at the lathe depends on the billet material, casting value, processing order and other indicators.
Equipment used, device, thyme and measuring instruments
General view of the 1k62 model universal lathe winch lathe at a, b with control levers, a kinematic scheme is provided. The main parts and functions of the lathe: Stanina. This part of the lathe is fixed on the tucks, into which all the remaining parts of the lathe are fixed.

A stretch is a 6-stroke fastening nut.
Figure 64. General view (a) and kinematic scheme of the 1q62 model lathe screw shear. (b) 1.2 — adjusting the number of spindles; 3-adjusting handle for the cutting of normal and increased step resistors; 4-adjusting handle when cutting Tench or left carving; 5-adjusting the push speed to the cutting carving step; 6-adjusting screw connection handle for the appropriate speed when cutting carving; 7-longitudinal walking mechanism for support; 8-connecting a detachable nut to; 9, 10 — spindle rotation and rotation side variable levers; 11—support Knop for dynamic walking in longitudinal and transverse directions; 12-support walking in longitudinal and transverse directions.



Expansion of the cylinder through holes. To do this, billet is installed on a three-stroke cartridge, the hole is driven into the support paint, adjusting the expansion cutter to drive the required layer scraper. At the bottom there is information about the methods of working conical surfaces according to their dimensions when working. Work by making the basic angle (f)of the cross-section intersection in the plan equal to half of the conveying cone, and taking the length slightly longer (20 30mm) than the cone leveler. To do this, billet is clamped in a three-stroke cartridge, turning it flat and pushing a chisel towards it, the necessary layer of shavings is directed.2. Work by turning the upper part of the support to the billet axis at the required angle around the vertical axis.