Abstract: The invention relates to a composite shock absorber for a polycrystalline diamond compact bit, comprising a drilling tool body having a water inlet, an impact body having a water outlet and forming a shock absorption cavity, a disc spring group having an annular pressing sleeve, a cylindrical torsion bar spring which has an external thread and a spline, is connected to the drilling tool body through threads and extended into an impactor and connected thereto through the spline, and the annular pressing sleeve, wherein bit vibration impact force is transmitted therebetween through a torsion transmission joint, and a bearing group is arranged between the lower end surface of the annular pressing sleeve and an annular step of the impact body. The composite shock absorber can weaken damage of the slippage effect to polycrystalline diamond compact cutting teeth, absorb axial vibration from a drill stem and prolong the service life of the bit.

Abstract: The invention relates to a composite shock absorber for a polycrystalline diamond compact bit, comprising a drilling tool body having a water inlet, an impact body having a water outlet and forming a shock absorption cavity, a disc spring group having an annular pressing sleeve, a cylindrical torsion bar spring which has an external thread and a spline, is connected to the drilling tool body through threads and extended into an impactor and connected thereto through the spline, and the annular pressing sleeve, wherein bit vibration impact force is transmitted therebetween through a torsion transmission joint, and a bearing group is arranged between the lower end surface of the annular pressing sleeve and an annular step of the impact body. The composite shock absorber can weaken damage of the slippage effect to polycrystalline diamond compact cutting teeth, absorb axial vibration from a drill stem and prolong the service life of the bit.

Abstract: A blank assembly for a housing, a housing, a manufacturing method for a housing and a terminal are provided. The blank assembly includes: a first blank, a second blank and a filler. The first blank defines a slit along a thickness direction of the first blank, the second blank partially extends into the slit, an outer surface of the second blank located in the slit is spaced apart from an inner wall of the slit, and the filler is filled in the slit. In the blank assembly according to the present disclosure, the second blank partially extends into the slit and a filler is used to fill the slit to connect the second blank located in the slit with the first blank, the second blank may be partially arranged in the slit in an embedding manner.

Abstract: A blank assembly for a housing, a housing, a manufacturing method for a housing and a terminal are provided. The blank assembly includes: a first blank having an inner wall defining a through slit along a thickness direction of the first blank, the slit having a width ranges from 0.3 to 0.5; a second blank having a part extending into the slit, the part having an outer surface spaced apart from the inner wall, a maximum depth of the second blank extending into the slit being less than a thickness of the first blank; and a filling layer filled in the slit.

Abstract: A mobile terminal, a housing component and a manufacturing method thereof are provided. The housing component of the mobile terminal includes a conductive housing and a conductive rivet part. The conductive housing has a slot, the slot divides the conductive housing into a plurality of regions, and the slot is filled with an insulating layer. The conductive rivet part crosses over the slot, thereby electrically connecting the plurality of regions together. The conductive rivet part is riveted to the plurality of regions.

Abstract: A mobile terminal, a housing component and a manufacturing method thereof are provided. The housing component of the mobile terminal includes a conductive housing and at least one conductive component. The conductive housing is provided with at least one slot. The at least one slot is configured to divide the conductive housing into a plurality of regions, and is filled with an insulating layer. The at least one conductive component is attached to the conductive housing and across the at least one slot, so as to electrically connect the plurality of regions together. The housing component of the mobile terminal realizes grounding and conduction of an antenna through electrically connecting the plurality of regions of the conductive housing using the at least one conductive component.

Abstract: A blank assembly for a housing, a housing, a manufacturing method for a housing and a terminal are provided. The blank assembly includes: a first blank having an inner wall defining a through slit along a thickness direction of the first blank, the slit having a width ranges from 0.3 to 0.5; a second blank having a part extending into the slit, the part having an outer surface spaced apart from the inner wall, a maximum depth of the second blank extending into the slit being less than a thickness of the first blank; and a filling layer filled in the slit.

Abstract: A blank assembly for a housing, a housing, a manufacturing method for a housing and a terminal are provided. The blank assembly includes: a first blank, a second blank and a filler. The first blank defines a through slit along a thickness direction of the first blank, the second blank partially extends into the slit, an outer surface of the second blank located in the slit is spaced apart from an inner wall of the slit, and the filler is filled in the slit. In the blank assembly according to the present disclosure, the second blank partially extends into the slit and a filler is used to fill the slit to connect the second blank located in the slit with the first blank, the second blank may be partially arranged in the slit in an embedding manner.

Abstract: A mobile terminal, a housing component and a manufacturing method thereof are provided. The housing component of the mobile terminal includes a conductive housing and at least one conductive component. The conductive housing is provided with at least one slot. The at least one slot is configured to divide the conductive housing into a plurality of regions, and is filled with an insulating layer. The at least one conductive component is attached to the conductive housing and across the at least one slot, so as to electrically connect the plurality of regions together. The housing component of the mobile terminal realizes grounding and conduction of an antenna through electrically connecting the plurality of regions of the conductive housing using the at least one conductive component.

Abstract: A mobile terminal, a housing component and a manufacturing method thereof are provided. The housing component of the mobile terminal includes a conductive housing and a conductive rivet part. The conductive housing has a slot, the slot divides the conductive housing into a plurality of regions, and the slot is filled with an insulating layer. The conductive rivet part crosses over the slot, thereby electrically connecting the plurality of regions together. The conductive rivet part is riveted to the plurality of regions.

Abstract: A precise positioning system for dual stage switching exposure, which includes a base, a first wafer stage positioning unit disposed on the base for a pre-processing workstation, and a second wafer stage positioning unit for an exposure workstation. Each of the wafer stage positioning units includes a wafer stage, a motion positioning detector, an X-direction guide bar, and a Y-direction guide bar. The pre-processing workstation and the exposure workstation both have two X-direction guide bars positioned on and movable along the Y-direction guide bars. The X-direction guide bars of adjacent workstations can be connected to each other.

Abstract: The present invention discloses a precise positioning system for dual stage switching exposure, which comprises at least a base, a first wafer stage positioning unit disposed on the base for a pre-processing workstation, and a second wafer stage positioning unit for an exposure workstation. Each of the wafer stage positioning units comprises at least a wafer stage, a motion positioning detector, an X-direction guide bar, and a Y-direction guide bar. The pre-processing workstation and the exposure workstation of the system both have two X-direction guide bars positioned on and movable along the Y-direction guide bars. The X-direction guide bars of adjacent workstations can be connected to each other. The advantage of the present invention is that the switching paths of the wafer stages are short; the guide bars are equally forced; the size of the wafer stages are hardly restricted, thereby greatly improving the switching speed, operation accuracy and flexibility of the system.