METEX PRO MP250 Milling Machine Instruction Manual

MP250
OPERATION MANUAL MP250 Milling Machine

MP250 Milling Machine

Keep Read and Understand the Operation Manual and Safety Information Before Operated!

GENERAL SAFETY INSTRUCTIONS
EXTREME CAUTION SHOULD BE USED IN OPEATION ALL POWER TOOLS. KNOW YOUR POWER TOOL, BE FAMILIAR WITH ITS OPEARTION.READ THE OWNER’S MANUAL AND PRACTICE SAFE USAGE PROCEDURES AT ALL TIMES.

• CONNECT your machine ONLY to the matched and specified power source.
• WEAR SAFETY G LASSES, RESPIRATORS, HEARING PROTECTION and SAFFTY SHOES when operating heavy machinery. Always wear safety glasses.
• DO NOT wear loose clothing or jewelery when operating machinery.
• A Safe Environment is important. Keep the area free of dust, dirt and other debris in the immediate vicinity of the machine.
• BE ALERT! Do Not Use prescription or other drugs that may affect your ability or judgement to safely use this machine.
• DISCONNECT the power source when changing tool bits and or any equipment.
• NEVER leave an operating tool unattended.
• ALWAYS keep blades, knives or bits sharp and properly aligned.
• ALWAYS keep all safety guards in place and ensure their proper function.
• ALWAYS make sure that any tools used for adjustments are removed before operating the machine.
• ALWAYS secure your work with the appropriate clamps or vises.
• ALWAYS keep bystanders safely away while operating machinery.
• DO NOT change speed while spindle is running.
• THINK SAFELY.WORK SAFELY. Never attempt a procedure if it dose not feel safe or comfortable.

STRUCTURE, FEATURES AND USAGE

This lathe adopts full gear transmission with great stability and high tooling accuracy. The main spindle speed changing unit -diprosopia curves disc, and longitudinal/cross feeding safety unit are own patented. The full functioned lathe with longitudinal/cross auto-feeding can realize tooling speeds choosing and regular threads setting through feeding box.

• Headstock — Full gear driven, the spindle speed changing is achieved through sliding gears and the main spindle can get 12 kinds of speeds at wide range. The lathe has the structure of forward/reward feeding unit which can get auto feeding in both direction and make right/left threading,

• Gearbox Transmit the movement in headstock to feeding box through change gears. By choosing different change gears, different metric/imperial threading can be achieved

• Feeding box It has 15 shifts. There is no need of changing the gears to get 15 kinds of feeding speed and tooling 15 kinds of metric/imperial threads.

• Carriage It has longitudinal/cross feeding interlock unit which can make auto feeding in longitudinal or cross direction

• Bedway The bedway adopts two V guideways, ensuring perfect positioning accuracy and excellent tooling rigidity.

• Tailstock
  Tt adopts rapid cam-lock unit to make easy and rapid operation

• Standard accessories
  Three jaw chuck, dead center, toolpost wrench, inner hexagon spanner, stud dead spanner, change gears, splash guard

• Optional accessories for your choice
  Machine stand, steady rest, follow rest, oil tray, toolcutter set, live center, face plate, four jaw chuck, backplate, special gears.

MAIN SPEIFICATIONS

Main parameters|
---|---
Max. swing over bed| 250 mm| 9.8″
Max. work-piece length| 500 mm| 19.6″
Max. swing over carriage| 150 mm| 6″
Main spindle diameter| 26 nrn| 1.02″
Main spindle taper| No.4
Main spindle speed| 12| 80-1600r/r.p.
Max. travel cross of toolpost| 130 Mel| 5.1″
Max. travel longitudinal of toolpost| 75 mm| 3″
Thread in metric| 15| 9
Range of thread in metric| 025-2.5 tam| 12 96 1/n”
Toolpost longitudinal feeding per spindle rotation| 0.03— 0.275mm/r| 0.00118-0.0106 “ft
Toolpost cross feeding per spindle rotation| 0.015 0.137mm/r| 0.0059-0.0053″/ r
Max. travel of tailstock sleeve| 60mm| 2.36″
Tailstock sleeve taper| No.3
Main motor| 750W/240V/50HZ
Gross/net weights| 180/163 kg
Overall dimensions| 1130×55 0x405| 44.5″x21.7″x 16″
Packing dimensions| Ox6001200x62| 23.747.3″x24.4″x”

TRANSMISSION

• lleadstock spindle speed change:
  The motor power is transferred to Headstock axle I through V-belts and then to headstock main spindle through sliding gears on axle I and axle V, so the main spindle gets 12 kinds of different speeds.

• Feeding speed change and thread tooling:
  The main spindle works on the gears on axle III and IV through feeding gears, the different meshing of sliding gears on axle Il achieves forward and reverse rotation.. Through a sct of final reduction gear and change gears A, B, C to drive the input axle in feeding box, then through complex gears on second motion shaft, to make the output axle achieve two different rotation directions and 15 different speeds reach the carriage through longitudinal feeding screw. By pressing the halfnut handle, the toolpost shall make the thread tooling; release it, the toolpost shall make longitudinal or cross movement.

ASSEMBLYING AND TRIAL

• Open the case, check the content against the packing list.
• Put the lathe on the machine stand, fasten it after adjusting the guideway to level.
• Clean the guideway, work table, carriage and oily surface by clear etamine or non-corrosive kerosene; Inject #10 or #7 machine lubrication oil into the parts as per lathe lubrication requirements and check the oil level.
• Check the longitudinal and cross movement of toolpost.
• Check the motor and electrical parts and make sure of reliable earthing.
• For trial, run the lathe at low speed in twenty minutes. During normal running, increase the speed step by step as per the speed indication shown on the speed plate. The speed change should be effected only when the main spindle fully stops. Slightly rotate the main spindle when tripping the speed change handle to help the gears smoothly changing.
• The operator shall read carefully the manual, pay attention to the lubrication and maintenance of the lathe to prolong the working life.

OPERATIO AND MAINTENANCE

• Operation:

• Headstock:
  Trip handle 2, making the arrow aiming at the tablet, shows the chosen speed.
  Handle 3 is forward/reverse feeding handle, the toolpost shall move as per showing.

• Feeding box:
  Change the position of handles 1 and 4 to get necessary threads as per the indication shown on the Feeding & Threading Tablet.When change metric threading to imperial threading, besides the indications shown on the tablet, you are required to change Gear A from teeth 34(teeth 36) to teeth 36 (teeth 34).

• Carriage:
  Handle 8 is for longitudinal and cross feeding. Press down for cross feeding and up for longitudinal, the middle is neutral position. When handle 8 at neutral position, rotate handwheel 5 and 6 can also achieve longitudinal/cross movement of toolpost. Press down handle 9, close the halfnut, the toolpost shall make threading. Handle 8 and 9 can be inter-locked.

• Saddle and toolpost:
  Handle 7 is for locking the toolpot, handle 10 is for moving the small carriage and handle 6 for moving working table.

• Tailstock:
  Handle 11 is for locking the sleeve in tailstock. Releasing handle 11, rotate handle 13, you can get out sleeve; handle 12 is for locking the tailstock.

• Maintenance::

• Making lubrication as per request before operation.

• Clean the chips on bedway, saddle, toolpost to avoid strain.

• The operator shall strictly make the operation as per regulations to avoid damage of the lathe and human safety.

• Never stop/brake the lathe by hands.

• No setting of tools and other objects on the headstock, toolpost and guidewawy.

LUBRICATION

shift
2| Headstock| Gears, bearings| splash| 60 days
3| Feeding box| Oil rope| Once per shift
4| toolpost| Leadscrew, guideway| Oil gun
| Worktable
6| bedway
7| Tailstock

• Before and after operation, all the lubrication points and surface

Electrical chart

ACCESSOIES

BED ASSEMBLY

HEADSTOCK ASSEMBLY

GB 76- 89
25| CM50-02- 022| | 1| Plug
26| GB781-2000| M8 25| 3| Hex Socket cap screw
27| CM50-02- 043| | 1| Left fork
28| CM50-02- 047| | 1| Right fork
29| CM250-02- 051| | 1| Small shaft
30| CME50-02- 050| | 1| Oil Gasket
31| GB 8-55| M6 12| 1| Hex Socket cap screw
32| CM50-02- 001| | 1| Head Stock Casting
33| GB 72- 88| M35 1.5| 1| Lock nut
34| GB 58-88| 35| 1| Lock Washer
35| GB 0- 85| MS 12| 3| Hex Socket cap screw

HEADSTOCK ASSEMBLY

TAIL STOCK ASSEMBLY

TOOL POST ASSEMBLY

SADDLE AND CROSS SLIDE ASSEMBLY

APRON ASSEMBLY

GEAR BOX ASSEMBLY

COMPOUND BOX ASSEMBLY

1. Correct label
2. Painting damage
3. Corrosion damage
4. Screw tightened| | 1. Connection tightened
2. Correct electrical elements
3. Earth resistance
4. Insulation resistance
5. Tolerance voltage test
6. Function of F/R switch
7. Emergency stop switch
8. Speed control knob
9. Electrical control board
10. Function of speed readout
11. Spindle safety cover
12. Function of motor|
II. Mechanical Inspection| OK
1. Function of top slide
2. Function of cross slide
3. Function of carriage
4. Function of tailstock
5. Lubrication for sliding parts
6. Parallelism of pulleys
7. Spindle adjustment|
III. Active Inspection| OK| V. Final Inspection| OK
1. Function of gearbox
2. Function of apron
3. Running test
4. Noise test
5. Leaky test
6. Cutting test| | 1. Correct accessories
2. Correct documents
3. Machine cleanness
4. Credibility antirust
5. Correct mark|
Remark:

Serial No……..
Date………….
Inspector…………..

b
5| Difference between two centers (higher at tailstock)| | 0.02-0.06|
NO.| INSPECTION ITEM| DIAGRAM| TOLERANCE(mm)
---|---|---|---
PERMISSIBLE| ACTUAL
6| Parallelism of tailstock quill to carriage movement a in horizontal plane b in vertical plane| | a 0.025/50
b 0.025/50| a
b
7| Parallelism of tailstock quill taper hole to carriage movement a in horizontal plane b in vertical plane| | a 0.03/250
b 0.02/250| a
b
8| Parallelism of center line of spindle to top slide movement| | 0.04/50|
9| Radial runout of chuck| | 0.04|
10| Radial runout of 020 test bar| | 0.08/100|

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