Abstract: The present invention provides a probe card. A module cap, on the probe card substrate, is designed to have a chute and the probe module can be installed on or uninstalled from the module cap via the chute. That simplifies the operations of assembling and disassembling the probe card and avoids positioning error.

Abstract: The present invention provides an automated system for exchanging polish plate, comprising a loading chamber to store polish plates ready for use, and the automated system has a mechanical arm to pick up and place polish plates between a test chamber and the loading chamber. The present invention realizes automated exchange of polish plates.

Abstract: A driving rod assembly includes a rod having an insertion section for coupling with a rotating head of a power tool and an operative section for coupling with an external tool. The rod further includes an outer periphery having first and second positioning grooves and a positioning portion between the first and second positioning grooves. The operative section includes a coupling portion located in front of the second positioning groove and having a stopper edge wider than the positioning portion. A coupling end is provided at a front end of the operative section. A C-clip is mounted on the positioning portion of the rod. A jacket includes a receiving section slideably mounted around the positioning portion. The jacket further includes a coupling section located mounted around the coupling portion of the rod to rotate together with the rod. The receiving section includes a coupling groove for receiving the C-clip.

Abstract: A driving rod assembly includes a rod having an insertion section for coupling with a rotating head of a power tool and an operative section for coupling with an external tool. The rod further includes an outer periphery having first and second positioning grooves and a positioning portion between the first and second positioning grooves. The operative section includes a coupling portion located in front of the second positioning groove and having a stopper edge wider than the positioning portion. A coupling end is provided at a front end of the operative section. A C-clip is mounted on the positioning portion of the rod. A jacket includes a receiving section slideably mounted around the positioning portion. The jacket further includes a coupling section located mounted around the coupling portion of the rod to rotate together with the rod. The receiving section includes a coupling groove for receiving the C-clip.

Abstract: A tool bit coupling assembly includes a coupling rod having an insertion end receiving a coupling device. A slideable sleeve is movable on the insertion end. A receiving hole of the slideable sleeve is larger than the insertion end and includes a coupling section. The insertion end of the coupling rod is received in a rear stop ring including a smaller diameter portion slightly smaller than an inner diameter of the coupling section. The rear stop ring further includes a larger diameter portion slightly larger than the inner diameter of the coupling section. The first coupling section of the slideable sleeve is firstly coupled with the smaller diameter portion of the rear stop ring. When the slideable sleeve is moved toward the driving end of the coupling rod, the coupling section of the slideable sleeve is tightly fit around the larger diameter portion of the rear stop ring.

Abstract: A screwdriver bit assembly includes a magnetic ring mounted in a front end of a sleeve hole of a sleeve. A retaining ring is made of a material more rigid than the sleeve, is mounted in the sleeve hole, and is located behind the magnetic ring. A screwdriver bit includes an insertion end, an extending section behind the insertion end, a flange section behind the extending section, and a clamping section behind the flange section. The front end of the screwdriver bit extends through the sleeve hole of the sleeve, the retaining ring, and the magnetic ring. The insertion end extends beyond the sleeve and is located in front of a front end face of the sleeve. The flange section abuts the retaining ring. The clamping section is held by a holding device mounted on the sleeve, providing a holding force towards a longitudinal axis of the sleeve hole.

Abstract: A ratchet wrench includes a ratchet wheel received in a handle and having an insertion hole. The ratchet wheel further includes an outer periphery having a toothed portion and a lower section below the toothed portion. The lower section includes an annular engagement groove and a cutout intercommunicating the annular engagement groove with the insertion hole. A clip includes a notch and has a diameter slightly smaller than a spacing between upper and lower wall faces of the annular engagement groove and larger than a depth of the annular engagement groove. The clip is not on the same plane when placed flat. The maximum width between an upper edge and a lower edge of the clip is slightly larger than the spacing between the upper and lower wall faces of the annular engagement groove. The clip includes an engagement section received in the cutout and extending into the insertion hole.

Abstract: A multi-blade type woodworking bit includes a driving section for coupling with an external tool and a working section in front of the driving section. The working section includes a first cutting section and a second cutting section behind the first cutting section. The first cutting section is conic and has a front pointed end. The first cutting section further includes at least two angularly spaced first dust discharge grooves. The second cutting section includes a shank portion axially connected to a rear end of the first cutting section. At least two angularly spaced blades extend radially from the shank portion. Each blade includes a front cutting end. A rear end of each first dust discharge groove is located between a pair of blades. A second dust discharge groove is formed between each pair of blades and has a width lager than a width of each first dust discharge groove.

Abstract: A screwdriver bit assembly includes a magnetic ring mounted in a front end of a sleeve hole of a sleeve. A retaining ring is made of a material more rigid than the sleeve, is mounted in the sleeve hole, and is located behind the magnetic ring. A screwdriver bit includes an insertion end, an extending section behind the insertion end, a flange section behind the extending section, and a clamping section behind the flange section. The front end of the screwdriver bit extends through the sleeve hole of the sleeve, the retaining ring, and the magnetic ring. The insertion end extends beyond the sleeve and is located in front of a front end face of the sleeve. The flange section abuts the retaining ring. The clamping section is held by a holding device mounted on the sleeve, providing a holding force towards a longitudinal axis of the sleeve hole.

Abstract: A quick-change connecting rod assembly includes a connecting rod having a front end with a coupling hole. Two diametrically opposed coupling grooves are defined in a polygonal inner periphery of the coupling hole. The connecting rod further includes first and second radial holes respectively receiving first and second positioning balls. A first abutment ring is mounted around the connecting rod and is located between the first and second radial holes. A pressing seat is received in a rear portion of the coupling hole and includes a receptacle receiving a magnet and a pressing portion for pressing against the second positioning ball. A sleeve receives the front end of the connecting rod and includes an inclined face for pressing against the first positioning ball. A rear abutment ring is fixed in the receiving hole and includes a side stop wall for pressing against the second positioning ball.

Abstract: A method for producing woodworking spade bits includes producing shanks from cylindrical rods. Each shank includes a front connecting portion including a front welding face extending between two front inclined sides and having a first width. Bits are produced from a flat board. Each bit includes a front end having a drilling portion with a second width larger than the first width. Each bit further includes a rear end having a rear connecting portion. The rear connecting portion includes two rear inclined sides extending rearwards towards a longitudinal axis. The rear connecting portion further includes a rear welding face extending between the rear inclined sides and having a width equal to the first width. The front welding face of each shank and the rear welding face of each bit are welded together, forming semi-products of woodworking spade bits which are heat processed, surface treated, and grinded to obtain final products.

Abstract: A quick change woodworking spade bit includes a bit having a cutting portion and an insertion portion with a positioning hole. A shank is coupled with a rear end of a connecting seat. The insertion portion of the bit is detachably engaged in an insertion hole in a front end of the connecting seat. First and second recessed portions are defined in a peripheral wall of the connecting seat. The second recessed portion includes first and through-holes intercommunicated with the first recessed portion and the insertion hole, respectively. An actuating rod is mounted in the second recessed portion and includes an engagement column extending through the first through-hole and a positioning column extending through the second through-hole. A button is mounted in the first recessed portion and is operably connected to the engagement column. The positioning column is biased by an elastic element to engage with the positioning hole.

Abstract: A ratchet wrench includes a ratchet wheel made of metal and having a ratchet teeth section and a driving section. A pawl made of metal engages with the ratchet teeth section and is controlled by a switch to control the rotation direction of the ratchet wheel. A plate made of metal includes a coupling portion to which the ratchet wheel is coupled. The coupling portion includes a first through-hole through which the ratchet wheel extends. The pawl presses against an inner periphery of the first through-hole. The inner periphery of the first through-hole has a length in an axial direction smaller than a thickness of the ratchet teeth section. A stopper made of plastic material is mounted around a peripheral edge of the coupling portion and includes second and third through-holes respectively located corresponding to the driving section of the ratchet wheel and the switch of the direction changing unit.

Abstract: A toolbox includes a space for receiving tools and includes a peripheral side and top and bottom sides. The peripheral side includes at least one snap fastener on an upper end thereof and at least one engagement portion on a lower end thereof. The at least one snap fastener includes a flexible engagement plate. A hook is formed on an upper end of the engagement plate. The lower end of the engagement plate can be pressed to move the hook away from the peripheral side of the toolbox. The hook of the at least one snap fastener of the toolbox can engage with at least one engagement portion of another similarly constructed toolbox stacked above the toolbox. The at least one engagement portion of the toolbox can engage with a hook of at least one snap fastener of another similarly constructed toolbox stacked below the toolbox.

Abstract: A ratchet wrench includes a ratchet wheel received in a handle and having an insertion hole. The ratchet wheel further includes an outer periphery having a toothed portion and a lower section below the toothed portion. The lower section includes an annular engagement groove and a cutout intercommunicating the annular engagement groove with the insertion hole. A clip includes a notch and has a diameter slightly smaller than a spacing between upper and lower wall faces of the annular engagement groove and larger than a depth of the annular engagement groove. The clip is not on the same plane when placed flat. The maximum width between an upper edge and a lower edge of the clip is slightly larger than the spacing between the upper and lower wall faces of the annular engagement groove. The clip includes an engagement section received in the cutout and extending into the insertion hole.

Abstract: A toolbox includes a space for receiving tools and includes a peripheral side and top and bottom sides. The peripheral side includes at least one snap fastener on an upper end thereof and at least one engagement portion on a lower end thereof. The at least one snap fastener includes a flexible engagement plate. A hook is formed on an upper end of the engagement plate. The lower end of the engagement plate can be pressed to move the hook away from the peripheral side of the toolbox. The hook of the at least one snap fastener of the toolbox can engage with at least one engagement portion of another similarly constructed toolbox stacked above the toolbox. The at least one engagement portion of the toolbox can engage with a hook of at least one snap fastener of another similarly constructed toolbox stacked below the toolbox.

Abstract: A screwdriver bit device with a magnetic structure includes a screwdriver bit made of metal and including a shank having an insertion end on a front end thereof. The shank further includes an annular groove behind the insertion end. A sleeve is integrally made of plastic and includes an outer annular wall and a coupling portion surrounded by the outer annular wall. The coupling portion includes a hole through which the shank extends. The coupling portion of the sleeve further includes a flexible wall delimiting the hole and having a coupling section extending radially inwards. The coupling section is engaged in the annular groove of the screwdriver bit and slideable between front and rear stop faces of the annular groove. A magnetic ring is mounted to an inner side of a front end of the sleeve. The screwdriver bit extends through a through-hole of the magnetic ring.

Abstract: A tool includes a main rod including a front end with a receptacle having an opening. The receptacle further includes a coupling section, a receiving section, and a shoulder between the coupling section and the receiving section. A work rod includes first and second work sections respectively having first and second work ends of different sizes. An insertion section between the first and second work sections includes first and second stop faces. One of the first and second work sections of the work rod is selectively inserted into the receiving section of the receptacle and is positioned by a positioning device. The insertion section is received in the coupling section. The other of the first and second work sections is exposed. One of the first and second stop faces abuts the shoulder of the receptacle to form a path for a force transmitted in an axial direction.