Winway, supplies the PCD PCB Combination Corner Radius Cutter for wholesale and customized orders. Designed for PCB corner rounding machines, this cutter set combines edge cutting and corner radius forming in one feed. Traditional PCB edge processing requires two separate procedures: cutting and corner radius processing. Frequent tool changes easily cause tool joint marks and result in low production efficiency. This cutter is used as a complete set (4-piece set: 160194T / 5-piece set: 150302T). With the cooperation of the whole set of cutters, it can finish edge cutting and board edge corner radius forming in one single feed. Common outer diameters of cutter discs are φ150 mm and φ160 mm. The tooth number for a single cutter disc is optional: 10 teeth or 16 teeth. Adopting an alloy steel substrate with high rigidity, its hollow weight-reduction slots optimize dynamic balance. The PCD straight teeth feature excellent wear resistance with low abrasion when machining fiberglass boards and deliver smooth board edges. It matches PCB corner rounding machines and is suitable for mass production.
PCD PCB Combination Corner Radius Cutter: complete set of combined PCD cutters specially used for PCB corner rounding machines. The substrate is alloy steel cutter body with PCD straight-tooth blades welded on the outer circumference. The cutters must be used as a complete set: 4-piece set or 5-piece set installed together on the machine. The step profile of each cutter disc in one set cooperates mutually to finish board cutting and edge corner radius forming in one step, combining two processes of cutting and rounding, hence the name combination corner radius cutter.
Important Notes:
● PCD teeth are straight teeth; the board corner radius is formed by the combined step structure of the whole set of cutters, not the edge of a single blade.
● 4 pcs/group and 5 pcs/group refer to the number of cutter bodies for the complete set, not the number of teeth.
● Tooth specifications of cutter disc: 10 teeth, 16 teeth; common outer diameter φ150, φ160mm.
● Complete combined cutter body design: two types of sets (4 pieces/group,5 pieces/group), used as a whole set. All PCD blades have straight cutting edges. The corner radius forming and edge cutting are integrally formed through matching step profiles of the whole set of cutters.
● Alloy steel substrate: high disc strength and deformation resistance. Hollow weight-reducing slots reduce moment of inertia and lower vibration during high-speed rotation to improve processing stability.
● PCD polycrystalline diamond straight-tooth blade: straight PCD cutting edge with excellent wear resistance. Service life is much longer than tungsten steel cutters when machining high-glass-fiber PCB.
● Precisely matched steps for the whole set: the step profile of each cutter disc in the set is precisely paired. The coordinated forming of the whole set is stable with good consistency of board corner radius.
● Optional multiple tooth numbers: 10 teeth or 16 teeth for single cutter disc. Evenly distributed teeth disperse cutting load, and tooth grooves facilitate the discharge of glass fiber dust.
● Customizable inner bore and keyway: can match the flange of customer’s cutting & grinding line equipment.
| Item | Parameter Description |
| Product Name | PCD PCB Combination Corner Radius Cutter |
| Substrate Material | Alloy Steel |
| Cutting Edge Material | PCD Polycrystalline Diamond (Straight Tooth & Straight Edge) |
| Common Specifications | Outer diameter φ150mm Inner bore 30 Tooth count 2 teeth (2 teeth per piece, 10 teeth for 5 pieces per set)，5 pieces/group (used as a complete set) Outer diameter φ160mm Inner bore 19 Tooth count 4 teeth per piece,16 teeth for 4 pieces per set，4 pieces/group (used as a complete set) |
| Total Teeth of One Set | 10 teeth /16 teeth |
● FR4 ordinary fiberglass PCB circuit board
● High TG FR4 board
● High glass fiber content PCB board
● CEM1, CEM3 composite substrate
● Aluminum base boards
| Processing Requirement | Recommended Set & Tooth Count | Remarks |
| Mass PCB edge cutting & corner radius processing, standard machine | 4 pieces per group,10 teeth | Fewer teeth, large chip removal space, suitable for thick boards, high glass fiber boards, aluminum base boards, etc. |
| High-standard appearance, high-end PCB, smoother cutting | 5 pieces per group,16 teeth | Uniform cutting load, excellent surface finish, for high requirement production |
1. Clamp the complete set in order: install the whole set in sequence, clean dust on inner bore and flange of cutter discs, align the positioning keyway and lock tightly. Check end runout after clamping; excessive runout will affect edge forming. Do not change the sequence of cutter discs randomly.
2. Tool setting: set cutting height of the whole set accurately. Never let PCD straight tooth edge collide with the board to prevent blade chipping.
3. Cutting parameters: Do not use excessively high rotating speed for combination corner radius cutters. Do not blindly increase feed rate for high glass fiber boards to avoid impact notches on straight tooth edge.
4. First article trial cutting: trial cut the first board after full installation. Inspect corner radius and edge burrs, confirm qualification before mass production.
5. Dust collection: strong dust collection must be turned on. Accumulated glass fiber dust will scratch PCD straight edge and PCB surface.
| Phenomenon | Possible Causes | Quick Solutions |
| Unstable corner radius | Wrong installation sequence, loose flange, large end runout, abnormal spindle clearance | Reinstall cutter discs by serial number, lock flange and correct end runout |
| Excessive edge burr | Dull PCD straight edge, fast feed rate, insufficient dust suction | Stop machine to inspect edge, reduce feed speed and clean dust pipeline |
| Chipped PCD straight blade | Board collision, foreign impurities in board, eccentric clamping, overload cutting parameters | Avoid board collision, inspect board impurities in advance, replace worn flange |
| Whitening & rough surface | Mismatched cutting parameters, worn and dull straight edge | Optimize speed & feed parameters, send tool back for regrinding |
| Vibration marks during machining | Poor dynamic balance, excessive feed, unsecured board | Reduce feed rate and fasten the board |
● Clean glass fiber dust in tooth grooves with air gun after shutdown. Do not scrape PCD straight tooth edge with hard objects.
● Store as a complete set. Each cutter disc is placed in dedicated foam holder to isolate cutting edges and prevent collision damage. Keep the whole set together instead of separate storage.
● Send for regrinding timely if notch or dullness appears on straight edge. Evaluate the whole set for regrinding. Do not run single worn disc for long time, which causes dimension deviation of the whole set.
● Handle with care during transport and installation. PCD edge is brittle and easy to chip under impact.
● Apply anti-rust protection on alloy steel substrate for long-term storage.
A1: The PCD blade itself is straight cutting edge without arc R. The step profiles of the whole set (4 pcs/group or 5 pcs/group) cooperate with each other. It can finish edge cutting and corner radius forming in one pass. Multiple cutters work together to complete the process, so it is named combination corner radius cutter.
A2: It depends on different models of corner rounding machines. 4-piece group is widely used for standard machines; 5-piece group is selected for extended cutting & grinding lines or scenarios requiring higher corner quality. Cutters cannot be used cross-group, must be used as complete set.
A3: Yes. PCD diamond straight tooth has excellent wear resistance. Its service life is much longer than ordinary tungsten steel cutters for high-fiber circuit boards.
A4: It supports factory regrinding. Normally it can be reground 4~5 times. After grinding, the whole set must be reassembled before use.
A5: Yes. The corner forming effect is determined by step profiles of the whole set of cutter discs. The whole set can be customized according to customer drawings.
A6: The main reasons include board collision, foreign impurities inside the plate, wrong installation sequence of cutter discs, eccentric clamping and overload cutting parameters. Inspect the plates before machining and install the cutter discs strictly in numbered order.
A7: Reduce self-weight and moment of inertia to improve dynamic balance; also reserve chip removal space for discharging glass fiber dust.
Address
Building 17, Yonglida Tiansheng Industrial Park, No. 50 Gangkou Avenue, Wanjiang District, Dongguan City, Guangdong Province, China
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