Drill bit special for printed circuit board (PCB) and machining method thereof
A PCB board and drill bit technology, applied in twist drills and other directions, can solve the problem of poor bending resistance of special drill bits for PCB boards, and achieve the effects of reducing the risk of breaking the welding surface, enhancing the bending resistance ability, and improving connection reliability.
Active Publication Date: 2016-02-10
SHENZHEN JINZHOU PRECISION TECH
View PDF10 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The object of the present invention is to provide a special drill bit for PCB board and the processing method of the special drill bit for PCB board, which aims to solve the technical problem of poor bending resistance of the special drill bit for PCB board formed by existing welding
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0027] It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or there may be an intervening element at the same time. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.
[0028] Such as Figure 1~4 As shown, the PCB board special drill 1 provided by the embodiment of the present invention includes a drill edge 11 and a drill shank 12, and the drill shank 12 includes a clamping portion 121 with...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| length | aaaaa | aaaaa |
| Concentricity | aaaaa | aaaaa |
Login to View More
Abstract
The invention is suitable for the design field of a drill bit special for a printed circuit board (PCB), and discloses the drill bit special for the PCB and a machining method of the drill bit special for the PCB. The drill bit special for the PCB comprises a drill lip and a drill stock. The drill stock comprises a clamping part with the external diameter smaller than that of the drill lip and a connecting part with the external diameter equal to that of the drill lip. The end, far away from the clamping part, of the connecting part is welded to one end of the drill stock. According to the drill bit special for the PCB and the processing method thereof, the drill stock is divided into the clamping part with the external diameter smaller than that of the drill lip and the connecting part with the external diameter equal to that of the drill lip, and meanwhile The end, far away from the clamping part, of the connecting part is welded to the end of the drill stock. Accordingly, on the one hand, the clamping part can enable the drill stock to meet the clamping dimensional requirement of a clamp; on the other hand, the connecting part can increase the area of a welding face between the drill stock and the drill lip. Therefore the connecting reliability of the drill lip and drill stock is increased, the risk that the drill bit special for the PCB is snapped from the welding face between the drill lip and the drill stock in drilling holes is reduced, and the service life of the drill bit special for the PCB is ensured.
Description
technical field [0001] The invention belongs to the design field of special drill bits for PCB boards, in particular to a special drill bit for PCB boards and a processing method for the special drill bits for PCB boards. Background technique [0002] The positioning holes and component mounting holes on the printed circuit board (referred to as PCB) are generally processed by special drills for special PCB boards. The special drill bit for PCB board includes a drill blade and a drill handle, wherein, the drill bit whose outer diameter of the drill blade is larger than the outer diameter of the drill handle is currently a commonly used special drill bit for PCB boards. Specifically, the outer diameter of the drill blade is generally between 3.2 mm and 6.5 mm, and in order to simplify the structural design of the driving device, the outer diameter of the drill shank is uniformly set to 3.175 mm (1 / 8 inch). The traditional processing method of the special drill for PCB board ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B23B51/02B23P15/32
Inventor 肖真健屈建国
Owner SHENZHEN JINZHOU PRECISION TECH