Meiwha Plane Hydraulic Vise
In the world of precision machining, how to securely, stably and accurately hold the workpiece is a key issue that every engineer and operator will encounter. An excellent fixture not only enhances the processing efficiency but also ensures the processing quality and reduces material waste.
The Plane Hydraulic Vise, also known as the built-in multi-power vise, is precisely the tool produced to solve this problem. With its unique practicality and powerful performance, the Plane Hydraulic Vise has become an indispensable and efficient assistant in modern machine tools.
I. Working Principle of the Plane Hydraulic Vise
First of all, we need to understand that the core advantage of the Plane Hydraulic Vise is that it can generate a clamping force of several tons with just a very small amount of force.
The "built-in" design of the Plane Hydraulic Vise means that its pressure boosting mechanism is integrated within the body of the vise, eliminating the need for additional complex hydraulic pumps, pipelines, or air compressors and other auxiliary equipment. This saves space and makes the operation convenient.
The working principle of the Plane Hydraulic Vise mainly relies on oil pressure boosting or mechanical force amplification mechanisms.
Hydraulic pressure boosting: When the operator gently taps or rotates the handle, the force is transmitted to the internal hydraulic booster. The oil in the sealed oil chamber is pushed by the pressure to move the piston, amplifying the small input force and converting it into a huge boost feed, generating an unparalleled clamping force. The clamping force can even be roughly adjusted through the lines on the hydraulic rod.
Of course, some models are equipped with butterfly springs, which can provide stable clamping force and excellent shock absorption effect after being tightened, thereby better ensuring the precision of the workpiece.
Mechanical amplification type: The force is amplified through ingenious lever, wedge or screw mechanisms. Users typically only need to tap the handle with their hand and rotate it a few times to easily obtain tens of tons of clamping force.
II. Key Features and Advantages of the Plane Hydraulic Vise
The Plane Hydraulic Vise combines numerous advantages, making it stand out among various types of fixtures.
Strong clamping and convenient operation: The most distinctive feature is that it can achieve extremely large output clamping force (up to several tons) with a very small manual input force (such as gently tapping the handle with your hand), significantly reducing the labor intensity of the operator and saving time and effort.
Outstanding rigidity, precision and durability: The body of the vise is usually made of high-strength ductile iron (such as FCD60) or FC30 cast iron, which has strong tensile strength, high wear resistance, and is not prone to deformation, ensuring long-term stable precision. The sliding surface is precisely ground and undergoes hardening heat treatment (usually above HRC45), which is wear-resistant and can maintain precision for a long time.
Flexible and practical design:
Multiple travel adjustment: Most products offer three (or more) clamping ranges. By moving the nut position or selecting different holes, they can quickly adapt to different-sized workpieces, with the maximum opening reaching up to 320mm.
Multiple units can be combined: The height of the main body of the vise and the key slot for alignment are usually controlled by fixed dimensions. This makes it convenient to combine multiple vices side by side for clamping long or large workpieces.
Locking function (for some models): For example, the MC built-in pressure-increasing locking vise adopts a "semi-spherical" locking design, which can effectively prevent the workpiece from floating or tilting during the processing, and is particularly suitable for heavy-duty cutting.
Stability and Safety: The unique internal booster structure and possible spring elements can provide stable clamping force and enhance the shock absorption during cutting, ensuring a more stable and safe processing process.
III. Application Scenarios of Plane Hydraulic Vise
The application scope of the Plane Hydraulic Vise is extremely wide, covering almost all mechanical processing scenarios that require precise and powerful clamping.
CNC numerical control milling machines and vertical/lateral machining centers: These are ideal accessories for modern CNC machines, facilitating rapid clamping and enhancing the efficiency of automated processing.
General milling machine operation: Provides an efficient and labor-saving clamping solution for traditional milling machines, enhancing the efficiency and safety of manual and semi-automatic processing.
Mold manufacturing and precision mechanical processing industry: Widely used in the processing of mold cores, mold frames, electrodes and other precision parts, with extremely high precision and stability being of crucial importance.
Scenarios involving multiple varieties, small batch production, and frequent changes: The feature of quickly adjusting the clamping range enables it to flexibly handle workpieces of different sizes.
IV. Usage and Precautions of the Plane Hydraulic Vise
Proper use and maintenance of the Plane Hydraulic Vise are crucial for ensuring its performance, accuracy and lifespan.
1. Basic Usage Steps (Taking Meiwha Plane Hydraulic Vise as an Example)
According to the size of the workpiece, adjust the nut to the appropriate position and hole location to obtain the desired opening range.
Place the workpiece and initially tighten the handle by hand.
Use your hand to strike the handle or gently tap it, triggering the internal pressurization or amplification mechanism until the workpiece is securely clamped.
For models with locking pins, make sure the locking pins are securely engaged to prevent the workpiece from floating up.
2. Important Notes
Strictly prohibit overloading operation: Only use your hands to firmly grip the handle. It is strictly forbidden to use hammers, extension tubes, or any other tools to apply force. Otherwise, it will seriously damage the internal mechanisms.
Pay attention to the direction of the clamping force: When performing heavy cutting operations, try to direct the main cutting force towards the fixed clamp body to achieve better support.
Avoid improper striking: Do not perform any striking operations on the movable clamp body or the finely ground smooth surface, as this may damage the accuracy and surface quality.
Maintain cleanliness and lubrication: Regularly remove iron filings from the inside of the vise (for some models, the upper cover can be opened to facilitate the removal of filings), and frequently clean and lubricate the sliding surfaces such as the screw rod and nut to prevent rusting and wear.
Proper storage: When not in use for a long time, it should be cleaned thoroughly. Key parts should be coated with anti-rust oil and stored in a dry place.
V. Plane Hydraulic Vise Selection Guide
When choosing the appropriate vise, the following points should be considered:
Clamp opening width and opening degree: These are the most basic parameters. Common specifications include 4 inches (approximately 100mm), 5 inches (125mm), 6 inches (150mm), 8 inches (200mm), etc. Choose according to the size range of the workpieces you often process, and be aware of the maximum opening degree (for example, the width of the 150mm model has an opening degree of up to 215mm or even 320mm)
Clamping force requirements: The maximum clamping force of different types and specifications of vices varies (for example, the clamping force of MHA-100 is 2500 kgf, while that of MHA-200 can reach 7000 kgf). Make a judgment based on the type of material you are processing (steel, aluminum, composite materials, etc.) and the cutting quantity (rough machining, fine machining).
Precision indicators: Pay attention to the parallelism of the jaws of the product, the perpendicularity of the jaws to the guide surface, etc. (For example, some models indicate a parallelism of 0.025mm). This is of crucial importance for precision processing.
functional performance:
Is it necessary to have a locking function to prevent the workpiece from floating up?
Do you need the function that can be used in combination with multiple units?
Does the number of adjustment segments meet your requirements for model change?
Material and Process: Preferentially select products made of ductile iron (such as FCD60), with the core and sliding surfaces undergoing hardening heat treatment (HRC above 45) and being precisely ground to ensure rigidity and durability.
The table below summarizes the key reference parameters for the Plane Hydraulic Vise of Meiwha's common specifications (variations may exist among different brands and models):
| Cat.No | Jaw Width | Jaw Height | Overall Height | Overall Length | Clamp | Main application scenarios |
| MW-NC40 | 110 | 40 | 100 | 596 | 0-180 | Processing of small precision parts |
| NW-NC50 | 134 | 50 | 125 | 716 | 0-240 | Routine processing of small parts |
| MW-NC60 | 154 | 54 | 136 | 824 | 0-320 | Common specifications widely used, medium-sized parts |
| MW-NC80 | 198 | 65 | 153 | 846 | 0-320 | Processing of large and heavy workpieces |
The built-in hydraulic vise combines ease of operation with powerful clamping force through its integrated pressurization mechanism and sturdy, precise structural design.
Whether it is for improving the efficiency of the CN machining center or enhancing the processing capacity of ordinary milling machines, it is a very worthwhile investment option.
Post time: Aug-21-2025
