A Bench Drilling Machine
7.11 Operation of the Machine
The machine is provided with a control panel located in the front of the casing. The following elements are installed in it:
1. Three-position switch:
- left spindle rotation;
- motor switched off - right spindle rotation.
2. Main circuit breaker with two positions:
- power on - emergency stop 3. Power on indicator light.
0
0 I
switch is used to turn the motor on and hence, the rotation of the spindle in the desired direction. The rotating tool is advanced towards the part to be drilled by means of the feed handles. Rotation is switched off by means of positioning the three-position switch in the “0” position.
Power is switched off by turning the main circuit breaker to “0” position.
Changing the speed of rotation is accomplished in the following sequence:
- Switch the machine off;
- Open the cover;
- Loosen the handle (3), Figure 12;
- The motor is pushed slightly towards the spindle to loosen the belt;
- The belt is adjusted to the desired gearing and then tightened by pushing the motor back in position;
- Tighten the handle (3);
- Close the cover.
Regular lubrication of some of the assemblies is necessary to be provided during machine operation. These are shown in Figure 17 along with the proper types of lubricants and recommended frequency of application.
7.12 Conclusions
The bench-drilling machine is designed for drilling blind and through holes and for additional machining of holes made in forged, die-cast, etc. semi-finished products. The product satisfies the market demand for small-size (bench) drilling machines. The maximum diameter of holes drilled in steel parts is φ15 mm, complying to a maximum extend to its functional intended purpose, i.e. performs all basic functions it has been designed for. The type of construction provides easy installation, convenient operation and maintenance. The manufacturing producability of assemblies and component parts has been one of the main objectives perceived throughout the overall design process.
Special study and development was devoted to the ergonomic considerations for the machine and the aim pursued here was to provide optimum matching of the product with the human factor peculiarities. Thus, convenient and simple machine operation was achieved as well as possibilities for continuous operation without exhausting the operator or threatening his health.
The aesthetic appearance of the bench-drilling machine is guaranteed by the in-depth clarification of the compositional and functional relationship between major machine sections, as well as by the compactness and neat and simple shape attained [16]. This contributes to the appearance and complies with the tendency for increased market demand for products that have been designed to satisfy the artistic sense of customers.
Fig. 17
Satisfying the marketing criteria and the peculiarities of the market demand, and in combination with the lower selling price compared to that of competitive products of the same class, the winch can quickly take the established market niche and gain lasting and financially backed-up success.
Bench Drilling Machine – Specification Tables Specification BD 1502-00
Item Designation Description Qty. Material Remarks
1. BD1502-10-Z02 Base complete 1
2. BD1502-11-Z02 Inter. Table complete 1 3. BD1502-12-Z01 Drill head complete 1 4. BD1502-20-M01 Drill spindle complete 1
Bench Drilling Machine
BD15
7. BD1511-70-017 Warning nameplate 1 D, E, F 8. BD1502-82-Z01 Cover complete 1
9. 0027045
Electrical motor 1450 0.55kW V3 FL200 230/400V 50Hz
1
IS.KL “B”
BAUGR80 1.3 – 1.6 A
10. 068293 Front panel complete 1
11. 0682989 Electrical materials 1 BD 1502-10-Z02 Support Base
Item Designation Description Qty. Material Remarks
1. BD1502-10-004 Support base 1 GG20
2. BD1602-10-002 Column 1 C45
3. 448 Screw
M 8x30-DIN 912-8.8
4 Bought out
4. 320598 Plug 3 Bought out
BD1502-11-Z02 Intermediate Table
Item Designation Description Qty. Material Remarks
1. BD1502-10-003 Intermediate table 1 GG20
2. BD1502-11-001A Gear rack 1 C45
3. BD1502-11-002 Worm 1 C45
4. BD1602-11-003 Rack gear 1 C45
5. BD1602-11-004 Axle 1 C45
6. GN 300-78-M8-50-SW
FA.GANTER
Tightening lever 1 Bough out
7. 1602-11-005 GN 471.1-80.B12 FA.GANTER
Handle 1 Bought-out
8. 60806 ULMER M5x8 Threaded pin 1 DIN 913-45H
bought-out 9. 68718 ULMER Washer 13 (or 12x18x1
washer) DIN 433 or
DIN 988 Bought-out
10 692194 Special Bushing 1 Bought-out
BD1502-12-Z01 Drilling Head
Item Designation Description Qty. Material Remarks
1. BD1502-12-001 Drilling head 1 GG 20
2. BD1511-12-002 Cap, black 1 Bought-out
3. M8 x 30 Screw
DIN-912-8.8
4 Bought-out
BD1502-20-M02 Drilling spindle MK2, short
Item Designation Description Qty. Material Remarks
1. BD1602-20-003 Quill 1 GG 20
2. BD1602-20-004 Drill spindle MK2, short 1 Ck67
3. Radial ball bearing 6005
RS
2 FAG, SKF
4. Clip ring B 25 x 1.2 1 DIN 471
5. R 6.6 Washer 1 DIN 440
Bought-out
6. M 6 x 12 Bolt 1 DIN 933-8.8
7. PS 25x35x1.0
Compensation washer
1 DIN 988
Bought-out
8. PS 25x35x0.2
Compensation washer
3 DIN 988
Bought-out
9. PS 25x35x0.1
Compensation washer
2 DIN 988
Bought-out BD1502-21-M01 Slot bushing
Item Designation Description Qty. Material Remarks
1. BD1602-21-004 Slot bushing 1 C45
2. BD1502-21-005 Key 1 Additionally ma
chined from 6x6x22 3. BD1602-21-007 Spacer bushing 1 C45
4. M 4x8 Screw 1 Din 912
Bought-out
5. Clip ring
B 30 x 1.5
1 DIN 471
Bought-out
6. Radial ball bearing
16006
2 FAG, SKF
Bought-out
BD1502-21-Z02 Main Drive
Item Designation Description Qty. Material Remarks
1. BD1502-21-M01 Slot bushing complete 1
2. BD1602-21-002A Belt pulley 1 GG 25
3. BD1602-21-003A Belt pulley 1 GG 25
4. BD1602-21-006 Flange 1 C45
5. BD1502-82-001 Cover plate 1 St37M Sub-supplied
6. BD1502-21-008 RPM nameplate 1
7. Countersunk screw
M 6x16
1 DIN 7991
Bought-out
8. M 6x12 Screw 4 DIN 912
Bought-out
9. M 6x20 Screw
Bulgarian National Standard 2171-83
1 DIN 912
Bough-out
10. M 6x25 Screw 2 DIN 912
Bought-out 11. 454678
Ganter
GN 184-32 Washer 1 Bought-out
12. 692244 Conti-v-multirib belt 1 DIN 7867
4 PJ 1140 bought-out
13. O-ring 49.5 x 3 1 Bought-out
14. 422 M 6 Nut 1 Oxidized
Bought-out
15. 5454 M 10 Nut 3 Oxidized
Bought-out
16. 8540 M 10x35 Bolt 3 DIN 933
Bought-out
17. 3467 Washer B 10.5 1 DIN 125
Bought-out
18. Threaded pin M 6x16 1 Din 915
Bought-out 19. 353540
FA.GANTER
Tightening lever
GN 300-63-M10-25-SW
1 Bought-out
20. Hinge 2 Bought-out
BD1502-51-M01 Feed drive
Item Designation Description Qty. Material Remarks
1. BD1502-51-001 Geared shaft 1 C45
2. BD1502-51-002 Lever 2 C45
3. BD1502-51-005 Vernier 1 C45
4. BD1502-51-006 Dial scale 1
5. BD1511-51-001 Handle 2 Bought-out
6. 692327
Item Designation Description Qty. Material Remarks
1. BD1502-51-M01 Feed drive 1
2. BD1502-51-004 Cap 1 St37M
3. BD1501-51-003 Retracting spring 1 Ck67
3.1 BD1501-51-003-01 Bandage 1 St37M
Item Designation Description Qty. Material Remarks
1. BD1502-70-001 Face plate 1
7. M4x25 Screw 2 DIN 912 Bought-out
8. M6 Nut 1 DIN 934
BD1502-82-Z01 Cover
Item Designation Description Qty. Material Remarks
1. BD1502-82-002 Cover 1
2. BD1502-82-003 Strip 1 St37M
3. BD1502-82-004 Strip 1 St37M
4. BD1502-82-005 Stop 1 C45
5. BD1511-70-017 Nameplate GB/D/F 1 6. 708222 Manufacturer’s nameplate 1 8. 692343
ULMER
Screw M.I-6 KT M 4x10 ULS
2 UN 19
Bought-out
9. 692368 Latch
PA 0. 0. 388.20
1 Bought-out
10. M6 x 16 Screw 2 DIN 912
11. M 3 Nut 6 ISO 4032
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