Jig bore machine

Types of jig bore machine

Generally, there are two main types of the jig bore machine.

• Universal jig borer

  The working table of a universal jig borer is typically T-slot-shaped and can be moved in the vertical, longitudinal, and transverse X, Y, and Z axes. As a result, it can be moved to almost any direction and angle, which makes it capable of accurately machining holes of different shapes and sizes. Additionally, a significant feature of universal jig borers is that their spindle rotation speeds can be changed, which is usually done by using a gearbox with multiple speed settings. The job of a universal jig borer is usually clamped horizontally, but it can also be operated vertically like a milling machine if horizontal and vertical split cylinders are used. This versatility makes it useful for machining workpieces of various sizes and shapes for many applications. Universal jig borer machines are most often used to accurately and quickly machine hole positions for complex shaped workpieces that have already been cast or otherwise formed.

• Transferring jig borer

  The transferring jig bore machine works by using a dedicated fixture to exactly position the workpiece and then the machine head to perform the machining operation. This type of jig borer machine relies heavily on electronic technology, as it usually has an electronic controller that plays the role of a feed drive, which determines the precise position of the workpiece during machining. Some models may provide a computer interface for even more flexible and varied work operations. In order to ensure that the machining accuracy is stable and constantly repeatable, sometimes standard or customized steel gauges are also used in conjunction with this machine type. These steel gauges serve to position the workpiece, ensuring precise and consistent location, thereby enhancing machining accuracy. Transfer jig bore machines are more suitable for precision machining of holes in high-volume production parts where the same part needs to be machined repeatedly. They are also more suited to situations where several hundred or thousand of the same kind of component need to be processed as efficiently and accurately as possible.

Specifications & Maintenance

Jig boring machines have many features and specifications that make them fit for many tasks. Knowing these parts helps businesses pick the right machine for their needs. It also shows how important it is to look after these machines properly.

Some key specifications include size, boring part, accuracy, control type, power supply, and extra attachments. These determine how well a jig borer will perform. Most jig boring machines have a metal frame and table as their main parts. The frame holds all the pieces together, while the table gives support and spacing. The drill spindle or boring part sits on top of the table. A horizontal milling machine jig borer has a boring part shaped like a horizontal cutter. Power supply relates to the motor driving the spindle. It can range from a quarter of a kilowatt up to five kilowatts, depending on machine size.

Accuracy is another key spec for good operation. The machine should carry out precise cutting with an error margin of only a few thousandths of an inch or less. Some models even have repeatability up to one-tenth of a thousandth inch. This level of precision works well for making items like tools, dies, gauges, and templates. Buyers who need high precisions should ask suppliers to see extra documentation supporting this level of accuracy.

Looking after jig borer machines also requires attention to details like these precision capabilities. Regularly cleaning debris off the metal surfaces prevents static building up that can attract dust. Wiping guide rails lightly lubricated with a clean cloth avoids dirt getting dragged along as parts move. Lubricate moving components often and apply new grease to replies when old grease gets contaminated with dirt. Use recommended internal/external coolant fluids from tooling suppliers and organize tools using tool racks or boxes.

Usage scenarios of a Jig Boring Machine

The majority of the purpose of a jig bore machine was to drill holes with high accuracy. However, today it is used for many applications in various industries. Some of the most common applications of the jig borer include the following:

• Drilling: The primary purpose of a jig borer is to accurately drill holes to a specific depth and diameter. This hole can be for various purposes like mounting holes, clearance holes, or precision holes for locating pins and dowels. Typically, the drilling process of holes involves the operator setting up the workpiece and then using the controls to position the boring tool over the workpiece.
• Keyways and Slots: Apart from just precision holes, the jig borer is used to create keyways and slots on a workpiece. Keyways are typically narrow slots that are cut into a workpiece so that a key can be fitted, thus connecting the hub and shaft together. On the other hand, slots are long, narrow cuts that run along an object usually for fittings or assemblies. The machine achieves this by using the controls to position the boring tool over the workpiece to create the keyways or slots.
• Blind Holes: The jig bore machine also creates blind holes that do not run through the workpiece. These holes typically have specific depths, and the jig boring machine accurately creates them for mechanical assemblies or for mounting applications. Generally, for the machine to achieve this, the operator has to program the depth of the hole so it can be accurately achieved.
• Counting and Chamfering: A complicated shape that requires multiple types of holes and cavities to be created is usually countersunk. A feature of this kind is typically found in fastening holes of bolts and screws. Also, using the jig borer to chamfer holes means that the machine will cut away an angle at the edge, therefore making it easier and smoother to fit objects into the cavity.

How to Choose a Jig Bore Machine

• Scale of Operation:

  The size of the business or workshop can greatly influence the choice of a bore-jigging machine. Smaller workshops may prioritize cost-effective solutions and could benefit from versatile machines that handle various tasks. On the other hand, larger operations generally require robust machines designed for high-volume production. For these settings, investing in precision and automation is crucial for maintaining efficiency and product quality.

• Level of Precision Required:

  The consistency and accuracy demanded by the types of products being manufactured can also dictate the choice of a jig bore machine. Workplaces that focus on manufacturing intricate parts and need high-precision components will have different requirements than those that handle simpler, less precise products. In highly demanding settings, it becomes essential to use a machine with advanced precision capabilities to ensure the quality and reliability of finished items.

• Technical Expertise:

  The amount of skill and knowledge present in the existing workforce can also impact the decision to purchase a specific type of boring machine. If a workshop has operators trained in handling advanced, automated, and complex machinery, it might be more feasible for them to invest in machines that offer higher levels of automation and sophistication. Conversely, facilities staffed by personnel with different skill sets may need to consider machines that are easier to operate and do not require specialized training.

• Budget Constraints:

  One of the most immediate considerations when selecting a jig bore machine is the budget available for investment. Workshops and businesses must evaluate how much of their total budget can be allocated to purchasing this equipment. While it's tempting to go for the most feature-rich and advanced machine, practical financial limitations often require a careful choice that aligns with budget constraints. Despite these limitations, it remains essential to select a jig-boring machine that does not compromise the quality and precision necessary for the workshop's specific machining needs.

Jig bore machine Q&A

Q1 What is the difference between jig borer and jig mill?

A1 Both are similar and have positioning features to locate and accurate cut workpieces. However, due to their different designs and setups, they can achieve different levels of accuracy. The primary use of a jig borer is to precisely locate holes and not to make cavities and the like. The drill table can be moved both horizontally and vertically, entering holes deeper than normal, which is unlike a jig mill where the table is moved simply to locate and may not enter a hole.

Q2 Does using a jig borer affect machining time?

A2 Yes, using a jig borer will significantly decrease machining time because of its greater accuracy than ordinary machines and its ability to have tools dry and wailed.

Q3 When will a jig borer be used?

A3 A jig borer is used when extreme accuracy is required, such as when making mounting holes for templates in the case of milling machines, when locating holes in larger assemblies or cabinets when adding hardware in mechanical parts, assemblies or cabinets, when adding intersecting holes and when adding engravings or letters to pieces.