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No.000023 Cutting Unit
52
52
Double acting cylinder mechanism with cam follower
Relevant category
Cam Follower
| Product name | Cam Followers - Flat Type - No Seal |
|---|---|
| Part number | CFFR8-19 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Classic cam following element
Available sizes
Cam Followers - Flat Type - No Seal
| Purpose | Body | Nut | |||
|---|---|---|---|---|---|
| Material | Seal | Material | Surface treatment | ||
| None | Yes | ||||
| General | 52100 Bearing Steel | ○ | ○ | 1045 Carbon Steel | Black oxide |
| 440C Stainless Steel | ○ | ○ | 304 Stainless Steel | - | |
| Low particle generation | - | ○ | |||
■Sizes and Dimensions
| Stud DIA. | Screw DIA. X Pitch | Outer race diameter | Outer race width | Overall length |
|---|---|---|---|---|
| φ5 | M5×0.8 | φ13 | 9 | 23 |
| φ6 | M6×1.0 | φ16 | 11 | 28 |
| φ8 | M8x1.25 | φ19 | 11 | 32 |
| φ10 | M10x1.25 | φ22 | 12 | 36 |
| φ26 | ||||
| φ12 | M12x1.5 | φ30 | 14 | 40 |
| φ32 | ||||
| φ16 | M16x1.5 | φ35 | 18 | 52 |
| φ18 | M18×1.5 | φ40 | 20 | 58 |
| φ20 | M20×1.5 | φ52 | 22 | 66 |
Accuracy Info
Cam follower accuracy
Stud diameter tolerance: h7
Outer race DIA. Tolerance: 0/0.12
Outer race DIA. Tolerance:
| Outer race DIA. | Tolerance |
|---|---|
| φ13 | 0/-0.008 |
| φ16 | |
| φ19 | 0/-0.009 |
| φ22 | |
| φ26 | |
| φ30 | |
| φ32 | 0/-0.011 |
| φ35 | |
| φ40 | |
| φ52 | 0/-0.013 |
Performance info.
Cam follower rated loads and rotational speed
| Stud DIA. -Outer race diameter | Basic dynamic load rating | Basic staic load rating | Max. allowable load capacity | Track load capacity | Rotational speed limit (rpm) | |
|---|---|---|---|---|---|---|
| C(kN) | Cor(kN) | (kN) | (kN) | With Seal | Without Seal | |
| φ3−φ10 | 1.47 | 1.18 | 0.36 | 1.37 | 32900 | 47000 |
| φ4−φ12 | 2.06 | 2.05 | 0.78 | 1.76 | 25900 | 37000 |
| φ5−φ13 | 3.14 | 2.77 | 1.42 | 2.25 | 20300 | 29000 |
| φ6−φ16 | 3.59 | 3.58 | 2.11 | 3.43 | 17500 | 25000 |
| φ8−φ19 | 4.17 | 4.65 | 4.73 | 4.02 | 14000 | 20000 |
| φ10−φ22 | 5.33 | 6.78 | 5.81 | 4.7 | 11900 | 17000 |
| φ10−φ26 | 5.49 | |||||
| φ12−φ30 | 7.87 | 9.79 | 9.37 | 7.06 | 9800 | 14000 |
| φ12−φ32 | 7.45 | |||||
| φ16−φ35 | 12 | 18.3 | 17.3 | 11.2 | 7000 | 10000 |
| φ18−φ40 | 14.7 | 25.2 | 26.1 | 14.4 | 5950 | 8500 |
| φ20−φ52 | 20.7 | 34.8 | 32.1 | 23.2 | 4900 | 7000 |
Floating Connector
| Product name | Floating Connectors - Extra Short Threaded Stud Mount |
|---|---|
| Part number | FJCX10-1.25 |
| Features | Floating joints that can be used where there is little distance between cylinders and moving objects. |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Selected in order to reduce the length dimension to a minimum
Available sizes
Floating Connectors - Extra Short Threaded Stud Mount
| Body·Cover | Joint | Spring | Washer | |||||
|---|---|---|---|---|---|---|---|---|
| Material | Surface treatment | Material | Surface treatment | Hardness | Material | Material | Surface treatment | Hardness |
| 1045 Carbon Steel | Black oxide | 1045 Carbon Steel | Black oxide | 35〜45 HRC | 304 Stainless Steel−WPB | 304 Stainless Steel | Nitriding treatment | 600HV〜 |
| 304 Stainless Steel | − | 420 Stainless Steel (440C Stainless Steel) | − | |||||
Sizes
| Screw diameter-Pitch | Tap Depth | Thread Length | Body Thickness | Body Hex size |
|---|---|---|---|---|
| M5－0.8 | 14.9 | 6 | 14 | 24 |
| M6－1.0 | ||||
| M8－1.25 | 17.1 | 8.5 | 15.5 | 27 |
| M10－1.25 | 21.9 | 10 | 19.5 | 30 |
| M14－1.5 | 23.6 | 11 | 22 | 38 |
IDEA NOTE Double acting cylinder mechanism with cam follower
Double acting cylinder in combination with a cam follower creates an open/close shutter mechanism.
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Application Overview
Purpose
- A cut-to-length process that incorporates an open/close guidance system made using a double acting cylinder and cam mechanism.
- Operation order: (1) The cylinder pushes out (2) Cam driven shutter opens (3) Workpiece is cut (4) The cylinder returns (5) Cam driven shutter closes
Target workpiece
- Plastic case
Dimensions: W125 x D25 x H20
Workpiece weight:0.08kg
Design Specifications
Operating Conditions or Design Requirements
- Stroke 50mm
- External dims.: W120 x D217 x H374
Required Performance
- Spring compression load: 20N
Spring constant: 1.0N/mm
Selection Criteria for Main Components
- Spring
- Select a set of springs with load ratings that are higher than that of the weights being supported above them.
- Cylinder
- Select a double acting cylinder with sufficient force rating to push against the springs.
Design Evaluation
Verification of main components
- Ensure the selected cylinder is able to generate a force adequate to push down on the springs.
- Spring
- Load = Spring constant x Deflection amount x Quantity used = 1.0N/mm x 10mm x 2pcs. = 20N > 9.6N (Load applied upon the springs).
- Cylinder
- Select a cylinder that can generate 40N (=20 x 2: x2 Safety margin) vertically.
- Select a cylinder with 90N force from the catalog, and obtain the bore diameter dmm.
- Bore diameter dmm = √(Force × 4/(Load factor × Pressure used × π))＝√（90 N × 4 / (0.5×0.4MPa×π))＝23.9mm.
- Therefore a cylinder of φ25mm is selected.
Other Design Consideration
- A pusher mechanism for the sections of the workpiece.
- Timing between shutter opening and cutting of the workpiece.
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