Virtual Dissection Dewalt 1

Post Diassembly Analysis

• Product: Heavy Duty 1/4 inch Drill
• UNSPC code (for power drill): 2711270
• Make: DeWalt
• Model: DW 217
• Power: 120 V AC at 50 to 60 Hz, 6.7 Amps
• Speed: 0 to 4000 RPM
• Weight: 3.2 lbs or 1.45 kg

Diassembly Video

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Parts

(The 2D drawings with dimensions for each part can be viewed by clicking the name of the part.)

The table belows lists individual parts for DeWalt DW 217 Drill.

Part # Part Name Quantity Function 3D model 2D drawings

Ball_bearing - assists the smooth rotation of the motor.

Brush_left - assists the stable rotation of the motor.

Brush_right - assists the stable rotation of the motor.

Chuck_bearing - assists the smooth rotation of the chuck.

Chuck_holder - holds different chucks. useful for various tasks.

Circuit_box - powers the drill and controls the speed of motor rotation.

Coil_spring - regulates the contact between the journal and the brush.

Cover_chuck - secures chuck holder into place, also covers other internal structures.

Direction_switch - switches the direction of current to switch the direction of chuck rotation.

Fan - vents the inside of drill and cools internal structures.

Field - creates electromagnetic field for the motor to be rotated.

Gasket - cushon between the chuck cover and the lid to reduce transmitted vibration from chuck to internal structures.

Gear - transmits torque from the motor to chuck.

Gear_bearing - assists smooth rotation of the gear.

Housing_1 - protects inner structures.

Housing_2 - protects inner structures.

Lock - allows for constant speed drilling without manual compression of the trigger.

Longest_screw ( x 4) - secure chuck cover into place. Also assists in securing rear housing onto front housing.

Magnet - helps stable rotation of the motor when current is run through.

Medium_screws ( x 2) - secures the rear housing onto the front housing.

Lid - Separates the inner structures from gears and chuck.

Pin ( x 2) - hold current direction box in one piece.

Pusher - helps hold magnet in place.

Rotor_journal - the motor. Generates torque to spin the chuck.

Round_case - holds field in place.

Rubber_cover - allows for snug-fit of the ball bearing into place.

Shaft_bearing - allows the smooth rotation of the shaft.

Shaft_wormgear - wormgear transmits the direct torque from the motor.

Short_screw ( x 2) - secures brush sockets into their places.

Top_box (current direction box) - Controls the direction of current.

Trigger (switch) - Pulled to turn on the drill.

Assembly

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Table: DeWalt DW 217 Drill Parts

Part #	Part Name	Quantity	Function	3D model	2D model	(2D second page)
1	Ball Bearing	1	Assists the smooth rotation of the motor.
2	Left Brush Holder	1	Holds the brush on left side.
3	Right Brush Holder	1	Holds the brush on right side.
4	Ball Beaing at chuck	1	Assists the smooth rotation of the chuck.
5	1/4 Chuck & Key	1	Holds different types of ends. useful for various tasks.
6	Coil Spring	1	Regulates the contact between the journal and the brush.
7	Gear Case	1	Secures chuck in place and houses gears.
8	Fan	1	Vents the inside of drill and cools internal mechanisms.
9	Electromagnet	1	Creates electromagnetic field and rotates the motor.
10	Baffle	1	Holds electromagnet in place.		File:Roundcase.png 50px
11	Cup	1	Secures ball bearing in place with snug-fit.
12	Bearing for Shaft	1	Allows the smooth rotation of the shaft.
13	Gasket	1	Acts as the cushion between the metalic lid and the plastic housing.
14	Output Gear	1	Rotational motion of the motor reduced in speed is put out through this gear for actual rotational motion of the drill bit.
15	Needle Bearing	1	Assists the smooth rotation of the motor.
16	Front Housing	1	Protects inner structures from impact and dust.		File:Housing1.png 50px
17	Rear Housing / Handle	1	Protects inner structures from impact and dust.		File:Housing2.png 50px
18	Screw (type 1)	2	Holds left and right brush holders in place.		File:Short screw.png 50px
19	Brush	1	Assists in stable rotation of the motor and the shaft.
20	Screw (type 2)	3	Holds front and rear housings together.
21	Gear Case Cover	1	assists the smooth rotation of the motor.
22	Restrainer	1	assists the smooth rotation of the motor.
23	Armature	1	assists the smooth rotation of the motor.
24	Worm Gear & Shaft	1	Wormgear transmits direct torque from the motor to output gear.
25	Screw (type 3)	3	Holds chuck casing and front housing together.
26	Circuit Box	1	Controls the current and voltage through the drill.
27	Direction Switch	1	Switches the direction of current to switch the direction of chuck rotation.		File:Direction switch.png 50px
28	Trigger Lock	1	assists the smooth rotation of the motor.
29	Pin	1	Holds circuit box and direction switch box together.
30	Direction Switch Box	1	Controls the rotational direction of the shaft thus for the drill bit.		File:Top box.png 50px
31	Trigger	1	Pulled in to turn the drill on. Can be compressed in various degrees to vary the rotational speed of drill bit.