33results about How to "Precise control of drilling depth" patented technology

The invention discloses an orthopedic operation drill. The orthopedic operation drill comprises a drill body and a positioning part, wherein one end of the positioning part is connected to the end face of the drill body, the other end of the positioning part is provided with a tip, and the tip is used for determining the drilling position of the orthopedic operation drill in the cartilage or bone.According to the orthopedic operation drill, the orthopedic operation drill is simply and conveniently inserted into the cartilage or bone through the tip of the positioning part, so that sliding ofthe orthopedic operation drill on the cartilage or bone is avoided, and then the orthopedic operation drill can accurately perform drilling at a pre-designed implantation position. According to the orthopedic surgery drill, cartilage or bone drilling can be easily and conveniently achieved, the drilling efficiency can be improved, and the precision of the drilling position can be improved.

The invention provides an automatic feeding control method used for a numerical control lathe tailstock and capable of controlling the drilling depth. A connecting device for automatic connection and separation of a saddle and the tailstock of a numerical control lathe is adopted. The connecting device comprises a centering assembly, a rotating arm assembly, a driving assembly and a drill bit assembly. The drill bit assembly is mounted in a barrel sleeve of the numerical control lathe tailstock. The centering assembly comprises a centering shaft and a V-shaped block. The rotating arm assembly comprises a rotating arm, a rotating shaft, a shaft sleeve and two limiting press blocks. The driving assembly comprises a pair of belt drive parts, a drive motor, a reset switch and a controller, wherein the controller is mounted in a distribution box of the lathe, the reset switch is mounted in front of the saddle of the numerical control lathe, and the drive motor is fixedly connected with the numerical control lathe tailstock and electrically connected with the controller.

The invention discloses a drilling device for processing doors and windows and belongs to the technical field of doors and windows processing. The drilling device comprises a bottom plate, a clampingand supporting mechanism and a drilling mechanism. The clamping and supporting mechanism comprises a clamping seat. Doors and windows of different dimensions can be supported by the clamping and supporting mechanism and the inclination angles of the doors and windows can be adjusted. The inclination angle of a drilling machine can be adjusted by the drilling mechanism. It is more precise to drillby adjusting the inclination angles of the doors and windows and the drilling machine. A connecting plate can be guided by means of a side supporting rod of a fixed rack II, so that the connecting rodis kept stable. A drilling depth can be mastered precisely by means of a scale mark, so that it is more precise to drill.

The invention discloses a rat craniocerebral model preparation device which comprises a sliding block, a drill rod, at least two limiting insertion holes and limiting insertion pieces, wherein the sliding block is arranged in a sliding mode and provided with a guide hole, the drill rod is sleeved with a locking sleeve, the limiting insertion holes are distributed in one side of the sliding block in the axial direction of the guide hole and communicated with the guide hole in the radial direction, and the limiting insertion piece is inserted into one limiting insertion hole. When the sliding block slides to a designated area, the limiting insertion piece is inserted into the limiting insertion hole in the uppermost layer, the drill rod moves downwards along the guide hole until the drill rod abuts against the skull, the locking sleeve which is not locked moves downwards along the drill rod to abut against the limiting insertion piece when the drill rod moves downwards along the guide hole to abut against the skull, the locking sleeve is locked on the drill rod, and the limiting insertion piece is pulled out; when the limiting insertion pieces are sequentially inserted into the limiting insertion holes of the subsequent layers from top to bottom, the locked locking sleeve drills into the skull along with the drill rod till the locking sleeve abuts against the limiting insertion pieces again, the drilling depth of the drill rod is equal to the distance between all the limiting insertion holes, the drilling depth of the drill rod is accurately controlled, and the situation that the drill rod damages the brain is avoided.

The invention provides a blank wax stone drilling machine for a tissue chip. The drilling machine includes a base, a bracket, a horizontal movement mechanism, a vertical movement mechanism, a drillingmechanism and a wax stone fixing seat. The bracket is connected with the base; the horizontal movement mechanism comprises two horizontal movement components which are mutually vertically connected,namely, the X-axis movement component and the Y-axis movement component; scales and/or grating rulers are arranged on the horizontal movement components, one horizontal movement component is connectedwith the base, and the other horizontal movement component is connected with the wax block fixing seat; the vertical movement mechanism includes a Z-axis movement component and a Z-axis limiting component, the Z-axis movement component is connected with the bracket and the drilling mechanism respectively, and the Z-axis limiting component is arranged on the Z-axis movement component for limitingthe maximum displacement of the Z-axis movement component. The drilling mechanism includes a drill bit, a first transmission device and a first motor, wherein the first motor is connected with the drill bit through the first transmission device.

The invention provides a thermal control multilayer puncher for a spacecraft, which is characterized by comprising a handle, a screw rod, a butterfly nut, a cylindrical base, a needle head and a scale; wherein one end of the screw rod is wrapped by the handle, the other end of the screw rod is provided with a central hollow area, the surface of the other end of the screw rod is provided with threads; the needle head is inserted into the central hollow area; the butterfly nut and the cylindrical base are fixedly connected with the screw rod through the threads, and the scale is arranged on thethreads. The puncher provided by the invention is light, easy to hold, simple in structure, convenient to operate and easy to popularize; the head of the screw rod is hollow to realize the design of the replaceable needle head; the head of the screw rod convenient for maintenance; the needle head is made of stainless steel and has high strength and corrosion resistance; the point of the needle head has various specifications and can punch holes of any aperture; the threads of the screw rod are fine threads with self-locking property; the depth of the point can be adjusted; the cylindrical baseis made of brass material and has a large bottom area, so the cylindrical base can meet the requirement of pressure dispersion, and the bottom surface is stressed evenly; and the cylindrical base iscapable of finding perpendicularity during drilling.

The invention discloses a use method and a preparation method of a drill bit, and relates to the technical field of machining tools. The drill bit comprises a drill handle, a drill blade and a drill tip which are connected in sequence; the drill tip can conduct electricity; and the drill blade is covered with a non-conducting film layer. The use method of the drill bit comprises the following steps that S11, a through hole is drilled in a to-be-machined plate through the drill bit, and the feedback time T of each conducting layer of the to-be-machined plate is collected through the drill tip;S12, a target layer and a reference layer of the to-be-processed plate are determined, and a time difference t between the target layer and the reference layer is calculated; S13, the distance H between the target layer and the reference layer is determined according to the time difference t and the drilling speed v of the drill bit; and S14, the distance H is used as the drilling depth, and depth-controlled drilling is performed from the reference layer on the basis of the through hole. By means of the method, when the drill bit is used for depth-controlled drilling, the drilling depth can beaccurately controlled, meanwhile, the method does not depend on procedures, and the machining efficiency and the machining precision can be improved.

The control system comprises a rotary table, a movable arm oil cylinder, a movable arm, a bucket rod oil cylinder, a bucket rod, a bucket oil cylinder, a spiral drill rod connecting mechanism and a spiral drill rod, and further comprises a controller, an instrument, a pressure sensor, a tilt angle sensor, an electromagnetic valve and a switch. The controller is electrically connected with the instrument, the pressure sensor, the tilt angle sensor, the electromagnetic valve and the switch. The electromagnetic valve is used for controlling the bucket rod linkage valve element to achieve inward retracting and outward swinging of the bucket rod. The tilt angle sensor is mounted on the movable arm and the bucket rod and used for identifying postures of the movable arm and the bucket rod; the switches comprise the first switch and the second switch, the first switch is used for triggering and recognizing the position of the spiral drill rod and triggering and recognizing the horizontal and vertical distance between a connecting shaft between the spiral drill rod and the bucket rod and a connecting shaft between the movable arm and the rotary table, and the second switch is used for triggering and starting the automatic control function of a spiral drill rod machine tool. According to the invention, inclination of a drilling pit is effectively avoided, perpendicularity of the drilling pit is ensured, operation difficulty is greatly reduced, and working efficiency is improved.

The invention provides a bone platform perforating device. The device comprises a perforating nail and a guide plate, wherein the perforating nail comprises a main body part and a perforating part which is fixedly connected with one end of the main body part, the outer diameter of the perforating part is less than that of the main body part, and the joint of the main body part and the perforating part forms a stepped surface; the guide plate comprises a plate body and a plurality of through holes which are uniformly arranged in the plate body, the inner diameters of the through holes can only allow the perforating part to pass, the length of the perforating part is greater than the depths of the through holes, and the maximum length that the perforating part can stretch after passing through the through holes is a target perforation depth. The perforating device provided by the invention has the following advantages: firstly, the perforating depth can be accurately controlled, so that the pouring effect of bone cement is guaranteed; and secondly, the perforating density can be accurately controlled, so that the problem that the connective firmness is not uniform as the perforating position uniformity is not enough can be obviously improved.