32results about How to "Precise control of dimensional accuracy" patented technology

The invention discloses an injection molding device and an injection molding method. The device comprises an upper mold and a lower mold; a steel needle insert with a steel needle is arranged on the upper mold or the lower mold; a layer of elastic film is arranged on the mold surface, opposite to the steel needle, of the upper mold or the lower mold; the shape and the size of the steel needle are the shape and the size needed to form microholes by injection molding; and the steel needle is projected to the elastic film from the upper mold or the lower mold, and is set to enable the end surface of the steel needle to press into the elastic film after mold closing. The device and the method can effectively solve the problems of difficult manufacturing of micron-scale microholes and microhole arrays, poor size precision and great possibility of generation of defects and flanges in hole mouths in traditional injection molding device and method.

The invention discloses an injection molding device and an injection molding method. The device comprises an upper mold and a lower mold; a steel needle insert with a steel needle is arranged on the upper mold or the lower mold; a layer of elastic film is arranged on the mold surface, opposite to the steel needle, of the upper mold or the lower mold; the shape and the size of the steel needle are the shape and the size needed to form microholes by injection molding; and the steel needle is projected to the elastic film from the upper mold or the lower mold, and is set to enable the end surface of the steel needle to press into the elastic film after mold closing. The device and the method can effectively solve the problems of difficult manufacturing of micron-scale microholes and microhole arrays, poor size precision and great possibility of generation of defects and flanges in hole mouths in traditional injection molding device and method.

The invention relates to a plate mounting device and a leveling mounting method thereof. The plate mounting device comprises profiles, grooves are dug in the profiles, and plates are inserted in the grooves of the profiles. The leveling method of the plate mounting device comprises the following steps that (1) firstly, the ground is leveled, the side faces of the profiles are attached to a structural wall, the bottom faces of the profiles are attached to the ground, and the profiles are fixed; and (2) the plates are sequentially inserted into the grooves of the profiles. By means of the mounting mode that the profiles are placed firstly, mounting can be convenient, the size and the horizontal precision in a decoration completed face can be accurately controlled, the mounting process is simple, the construction efficiency and the construction quality are obviously improved, manpower and financial expenditure is saved for enterprises, dust in the operation link is little, and the environment-friendly effect is good.

The invention provides an automatic numerical control lathe tailstock control method. A connection device for achieving automatic connection and disconnection between a lathe saddle and a tailstock of a numerical control lathe through an air cylinder is utilized. The connection device comprises a connection pillar, a rotating arm assembly, a drive assembly and a drill bit assembly, the middle of the connection pillar is provided with an annular groove, the shaft end of the connection pillar and the side face of the tailstock are provided with a pair of sensors, the rotating arm assembly comprises a rotating arm, a rotating shaft, a shaft sleeve and a big gear, the shaft sleeve is fixed to the front side face of the tailstock of the numerical control lathe, the rotating shaft penetrates through the shaft sleeve, the front end of the rotating shaft is fixedly connected with the rotating arm, the other end of the rotating shaft is fixedly connected with the big gear, the front end of the rotating arm is provided with a hook portion capable of being clamped into an annular groove, the drive assembly comprises a rack, an air cylinder, a magnetic exchange valve, a rack guide groove, a reset switch and a controller, the controller is mounted in a lathe power distribution cabinet and electrically connected with a numerical control system and the magnetic exchange valve, and the rest switch is mounted in front of the lathe saddle of the numerical control lathe and electrically connected with the controller.

The invention provides an automatic feeding control method of a tailstock of a numerical control lathe. A connection device for realizing connection and disconnection between a saddle and the tailstock of the numerical control lathe is used in the automatic feeding control method. The connection device comprises an alignment assembly, a rotating arm assembly and a driving assembly, wherein the alignment assembly comprises an alignment shaft (1) and an alignment sleeve (2) with an inner conical hole, wherein a sensor (13) is arranged at the shaft end of the alignment shaft (1) and the bottom of the conical hole of the alignment sleeve (2); the rotating arm assembly comprises a rotating arm (4), a rotating shaft (5), a shaft sleeve (6) and two limiting pressure blocks (7); the driving assembly comprises a pair of belt drivers, a driving motor (9), a resetting switch (14) and a controller (15); the controller (15) is mounted in a lathe power distribution cabinet; the resetting switch (14) is mounted on the front surface of the saddle of the numerical control lathe and is electrically connected with the controller; the driving motor (9) is fixedly connected with the tailstock of the numerical control lathe and is electrically connected with the controller (15).

The invention discloses an aluminum-based composite material with an ultra-low friction coefficient and a preparation method thereof. The aluminum-based composite material with the ultra-low friction coefficient comprises an aluminum substrate, an Al2O3 hardened film layer produced by microarc oxidation on the surface of the aluminum substrate, and a MoS2-based dry film lubricating layer sprayed on the surface of the Al2O3 hardened film layer. The aluminum-based composite material has the advantages of overcoming a plurality of shortcomings of the prior art and prolonging the service life of key components and parts adopting the composite material, along with scientific formula, simple process and ultra-low friction coefficient.

The invention provides a manufacturing process of an easy-open lid and the easy-open lid, which belong to the technical field of machinery. It solves the problems of poor toughness and easy crushing of the existing easy-open lids. The easy-open end includes a plastic-absorbed easy-open end body, the easy-open end body is punched with pre-cut marks, and the pull ring is hot-melt connected with the easy-open end body. This production process includes the following steps: step a: select a sheet made of plastic material and perform blister molding to form an easy-open cover on the sheet; step b: press the corresponding easy-open cover on the sheet mark, and install and hot-melt connect the pull ring to form an easy-open end blank with pre-broken marks; step c, then trim the corresponding easy-open end blank on the sheet and separate it from the sheet to form an easy-open end. The easy-to-open lid is made by blister molding, and the molecules are arranged in strips and line segments. The tightness between the molecules makes the overall toughness of the lid better, not easy to be crushed, and the yield is high, and it is not easy to tear during the tearing process Crushed, easy to operate.

The invention relates to the field of cutting devices, in particular to a device for cutting gel paste. The device is characterized by comprising a conveying device, a cutting device and a power device, wherein the conveying device comprises a first cylinder and a conveying groove; the first cylinder is arranged on the second half part of a guide rail; wheel teeth are arranged on the lower surface of the first half part of the guide rail; a cylinder rolling component is arranged at the front end of the conveying groove; a flywheel is fixed on one side of the cylinder rolling component and is in meshed connection with the first half part of the guide rail through the wheel teeth; the cutting device is arranged at the front end of the cylinder rolling component and comprises a tool and a second cylinder which is connected with the tool; the power device comprises a first power device and a second power device, which are connected with each other; and the second power device is respectively connected with the first cylinder and the second cylinder. By the adoption of the device, the accuracy of the cutting size of the gel paste is improved, labor is greatly saved, and working efficiency is improved.

The invention provides an automatically-controlled numerically controlled lathe tailstock feeding method. A connecting device which combines a numerically controlled lathe saddle and a tailstock and disengages the numerically controlled lathe saddle from the tailstock is adopted. The connecting device comprises an alignment assembly, a rotating arm assembly and a driving assembly; the alignment assembly comprises an alignment shaft (1) and an alignment sleeve (2) with an inner cone hole, a sensor (13) is arranged at the shaft end of the alignment shaft (1) and at the bottom of the cone hole of the alignment sleeve (2); the rotating arm assembly comprises a rotating arm (4), a rotating shaft (5), a shaft sleeve (6) and two limiting pressing blocks (7); the driving assembly comprises a pair of belt drives, a driving motor (9), a reset switch (14) and a controller (15); the controller (15) is installed in a machine tool power distribution cabinet, the reset switch (14) is installed in front of the numerically controlled lathe saddle and electrically connected with the controller, the driving motor (9) is fixedly connected with the tailstock of the numerically controlled lathe and electrically connected with the controller (15), and a vibration reduction backing plate is arranged between the driving motor (9) and the tailstock of the numerically controlled lathe and used for reducing vibratory force generated when the driving motor (9) operates.

The invention provides a digital controlled lathe tailstock control method achieving alignment by means of a V-shaped block. A digital controlled lathe saddle and tailstock engaging and disengaging connecting device is adopted and comprises an alignment component, a rotating arm component and a driving component, wherein the alignment component comprises an alignment shaft and the V-shaped block, the rotating arm component comprises a rotating arm, a rotating shaft, a shaft sleeve and a big gear, and the shaft sleeve is fixed to the front side face of a digital controlled lathe tailstock; the rotating shaft penetrates through the shaft sleeve, the front end of the rotating shaft is fixedly connected with the rotating arm, the other end of the rotating shaft is fixedly connected with the big gear, and a hook part capable of being clamped into a ring slot is arranged at the front end of the rotating arm; the driving component comprises a rack, a cylinder, an electromagnetic directional valve, a rack guiding groove, a reset switch and a controller, the controller is installed in a machine tool power distribution cabinet and electrically connected with a digital control system and the electromagnetic directional valve, and the reset switch is installed on the front side of a digital controlled lathe saddle and electrically connected with the controller.

The invention discloses a processing method of surface-mounted pads on a thick copper circuit board. The processing method comprises the following steps: S01. patterning an external layer for the first time; 2. etching the external layer for the first time; 3. patterning the external layer for the second time; 4. etching the external layer for the second time; and 5. manufacturing a solder mask bridge among the surface-mounted pads by a fractional solder resisting method. The processing method has the beneficial effects that the surface-mounted pads are manufactured by a partitioned etching method, which strengthens size control of the surface-mounted pads and meets the design requirements; and the solder mask bridge among the surface-mounted pads are manufactured by utilizing the fractional solder resisting method so that the solder mask bridge and the circuit board are firmly connected together and are not easily separated from each other.