A tool for producing an internal thread in a workpiece pilot hole having a thread major diameter and a thread minor diameter, which tool has a thread-forming section, by which an internal thread profile can be produced in a pilot hole wall. The internal thread profile having the thread major diameter and a thread inner diameter. The tool has a drilling section, by which the thread inner diameter of the internal thread profile can be expanded to the thread minor diameter by machining. At least one, in particular exactly one chip groove is associated with the drilling section of the tool, by which chip groove the chips produced as the thread inner diameter is expanded to the thread minor diameter can be transported away.

A method for producing a tapped bore in a workpiece with a tap drill bit, which, at its drill bit tip, has a primary cutting edge and a thread profile trailing in a tap drilling direction. The method has a tap drilling stroke, in which the tap drill bit is driven into the workpiece with a tap drilling advance in the tap drilling direction and at a tap drilling rotational speed synchronized therewith, and the tool-primary cutting edge produces a core-hole bore, and the thread profile of the tool bit forms an inner thread at the inner wall of the core-hole bore. In the tap drilling stroke, shavings are produced, which are conveyed in a shavings discharge direction, which is oppositely directed to the tap drilling direction, out from the tapped bore and collide here with thread flanks of the inner thread that face the shavings that are discharged.

A method for producing a tapped bore in a workpiece with a tap drill bit, which, at its drill bit tip, has a primary cutting edge and a thread profile trailing in a tap drilling direction. The method has a tap drilling stroke, in which the tap drill bit is driven into the workpiece with a tap drilling advance in the tap drilling direction and at a tap drilling rotational speed synchronized therewith, and the tool-primary cutting edge produces a core-hole bore, and the thread profile of the tool bit forms an inner thread at the inner wall of the core-hole bore. In the tap drilling stroke, shavings are produced, which are conveyed in a shavings discharge direction, which is oppositely directed to the tap drilling direction, out from the tapped bore and collide here with thread flanks of the inner thread that face the shavings that are discharged.

An access device is provided for access to a fluid tank, especially a fluid tank of a ship. The access device includes a drill, a thread-forming unit, a hollow body with an external thread and a connection plate. The hollow body is provided with a valve.

The present disclosure provides a variable helical composite tap, which includes a drill bit segment and a tap segment sequentially arranged, where a helical angle of the drill bit segment is greater than a helical angle of the tap segment, and a core thickness of the tap segment is greater than a core thickness of the drill bit segment. The helical angle of the drill bit segment from a drill tip to a connection end of the tap segment with the drill bit segment increases continuously. The helical angle of the tap segment from the drill tip to a drill handle increases continuously, and preferably, the core thickness from the drill tip to the drill handle increases continuously. Compared with the prior arts, the drill bit segment of the present disclosure has a greater helical angle and a better chips removal effect is produced in the drill bit.

The present disclosure provides a variable helical composite tap, which includes a drill bit segment and a tap segment sequentially arranged, where a helical angle of the drill bit segment is greater than a helical angle of the tap segment, and a core thickness of the tap segment is greater than a core thickness of the drill bit segment. The helical angle of the drill bit segment from a drill tip to a connection end of the tap segment with the drill bit segment increases continuously. The helical angle of the tap segment from the drill tip to a drill handle increases continuously, and preferably, the core thickness from the drill tip to the drill handle increases continuously. Compared with the prior arts, the drill bit segment of the present disclosure has a greater helical angle and a better chips removal effect is produced in the drill bit.

A skateboard tool system (100) may comprise a first arm (200), a second arm (300), a third arm (400) attached to a body (500) with each arm forming an overall T shape and each arm having a distal end attached to a useful implement. To gain mechanical advantage, the body (500) may contain or be integrated with a rethreading tool (540). The centralized location of the re-threading tool in combination with the T shape allows for a superior purchase or grip while rotating the re-threading tool. The body may define various voids to comport with a unique L shaped screw driver (600), the screw driver having a shorter (605) and a longer (607) longitudinal member giving additional leverage in rotating a Phillip head screw driver (610). A cutting blade is retained within the body for ease of access and safety.

A skateboard tool system (100) may comprise a first arm (200), a second arm (300), a third arm (400) attached to a body (500) with each arm forming an overall T shape and each arm having a distal end attached to a useful implement. To gain mechanical advantage, the body (500) may contain or be integrated with a rethreading tool (540). The centralized location of the re-threading tool in combination with the T shape allows for a superior purchase or grip while rotating the re-threading tool. The body may define various voids to comport with a unique L shaped screw driver (600), the screw driver having a shorter (605) and a longer (607) longitudinal member giving additional leverage in rotating a Phillip head screw driver (610). A cutting blade is retained within the body for ease of access and safety.

The present invention is a plurality rods extending from a base of a die driver inserted into a plurality of openings in a threading die used to thread or re-thread a stud. A tool is inserted into a tool-receiving recess of the die driver and the driver is rotated.

A skateboard tool with enhanced portability and storage capacity to store a plurality of tools is provided. The skateboard tool includes a main body member having an upper portion, a lower portion and a side wall connecting the upper and lower portions together, the upper portion having an upper opening that extends to an internal cavity formed by the side wall and the lower portion, a lid detachably coupled to the upper portion of the main body member to enclose the internal cavity, and a driver coupled to the lower portion of the main body member. The plurality of tools is disposed within the internal cavity of the main body member and includes at least one socket designed to couple to the driver. The socket is designed to communicate with the skateboard to permit the user to perform a maintenance on the skateboard.