Punch Press Safety: 12 Critical Precautions
Imagine your hand caught in the powerful jaws of a machine – a nightmare for any punch press operator. This article outlines 12 crucial safety precautions for using a punch…
Have you ever considered how a punch press evolved from manual labor to automated systems that shape metals with precision? This article dives into the development and applications of punch presses, highlighting their history and technological advancements. You’ll discover how these machines transformed metalworking, the various types of punch presses, and their specific uses in manufacturing. By the end, you’ll understand how punch presses contribute to efficient mass production and the intricacies of their operation.
1. Manual press:
2. Manpower press:
3. Power press:
4. Auto punch press:
Applications: Used for punching, cutting, drawing, and compression forming of metal materials.
Exclusions: Not suitable for fabrication of fragile materials such as cast iron, wood, glass, and ceramics, or flammable materials such as magnesium alloys.
Features:
I. Basic knowledge of punch press
1.1 brief introduction to press function:
★ The essence of the punch press is translating the circular movement into a straight-line motion.
★ Function: Utilizes a transmission structure to generate the appropriate pressure and kinetic energy near the bottom dead center, in combination with a mold, causing the workpiece to undergo plastic deformation and produce the desired final product.
Punch press classification as per the slider movement:
II. Structure
Identification of punch points:
Crankshaft and eccentric gear
Crankshaft:
★ use when stroking < 400
★ low cost
Eccentric gear:
★ use when stroke > 400
★ high cost
2.1 C-type press structure introduction (crank single point)
C frame press component:
A1: Slider Component
A2: Balancer
A3: Die Cushion
Punch drive structure plan:
2.2 C-frame press (crankshaft double point) structure：
Teach you how to judge the crank punch：
2.3 Closed (crankshaft single point) press structure:
2.4 Closed (crankshaft double point) press structure:
★ Integrated body & three split body
— Applicable table is relatively small, tonnage is relatively small;
— Tablet generally ≤ 2300 * 1250, tonnage ≤ 260T
— Applicable table is relatively big, tonnage is relatively big;
— Tablet generally ≥2500*1400, tonnage ≥300T
Three split bodies: use 4 reinforcing rod to connect the upper, middle and lower sides to a whole.
Three split body punch press:
2.5 Closed (eccentric gear single point) press structure:
2.6 Closed (eccentric gear double point) press structure:
2.7 High-speed punch press
III. Punch press peripheral equipment
Quick mold changing device: including the upper clamp die, the lower clamp dies, die lifter, die arm, hydraulic power units, etc.
IV. Punch press safety
For Personnel Safety:
(1) Machine Safety Design: Equipped with safety devices such as a two-hand operation device, emergency stop device, re-start prevention device, double solenoid valve, and chain devices.
(2) Safe Operation: Includes safety fencing, photoelectric safety devices, safety plugs and stops, alarms, and more.
For Machine Safety:
(1) Overload Protection: In the event of exceeding the machine’s capacity, an overload protection device will stop to protect the machine.
(2) Thermal Relay Protection: Prevents damage to the motor due to excessive current.
As the founder of MachineMFG, I have dedicated over a decade of my career to the metalworking industry. My extensive experience has allowed me to become an expert in the fields of sheet metal fabrication, machining, mechanical engineering, and machine tools for metals. I am constantly thinking, reading, and writing about these subjects, constantly striving to stay at the forefront of my field. Let my knowledge and expertise be an asset to your business.
EN 
DE 
ES 
FR 
IT 
NL 
PT 
RU 