2 results about "Alpha angle" patented technology

The application relates to the technical field of machining, in particular to a laser cutting method, which comprises the following steps: turning over a blank to a position where a first plane of the blank is at an alpha angle with a horizontal machining surface, and the first plane is arranged to be inclined downward along a first edge of the first plane towards a second edge of the first plane; starting a laser, the laser is incident in a vertical direction, and the first edge of the first plane of the blank is laser cut until the cutting depth reaches half of the thickness of the blank; turning over the blank again to the position where the first plane of the blank is at the alpha angle with the horizontal machining surface, and the first plane is arranged to be inclined upward along the first edge of the first plane towards the second edge of the first plane; starting the laser, the laser is incident in the vertical direction, and the first edge of a second plane of the blank is laser cut until the blank is cut through. It can be seen that the laser cutting is performed on two sides, the machining difficulty is reduced, the production efficiency, machining precision and product quality are improved, and micro cracks caused by excessively high cutting temperature can be avoided.

The utility model provides a dose adjustment and sound feedback structure when injection pen is adjusted, including casing, adjusting mechanism, dose indication subassembly and feedback subassembly, the near body end of casing is equipped with injection drive mechanism, the far body end of casing is equipped with fixed component, dose indication subassembly is connected with fixed component through meshing structure, meshing structure produces perceptible tactile and auditory feedback in the adjusting process, when the positive rotation of adjusting knob, the angle of the surface of the tooth of dose indication subassembly and fixed component is alpha, alpha angle setting is 10 45 DEG, meshing structure provides smooth guiding angle to reduce resistance, when the reverse rotation of adjusting knob, when the tooth cooperation of the end surface of dose indication subassembly and fixed component, the angle of the surface of the tooth of dose indication subassembly and fixed component is theta, theta angle setting is 60 90 DEG, can prevent dose indication subassembly backoff after dose setting is completed, realizes self -locking.