DE102004005212A1 - Spanner for use in motor vehicle production lines comprises a receiving opening defined by stopping faces for the screw surfaces of profile that form a screw edge with other stopping faces or with defining surfaces of receiving opening - Google Patents

Abstract

Spanner (1) comprises a receiving opening (3) defined by stopping faces (4, 4', 5, 5') for the screw surfaces of a profile that form a screw edge with other stopping faces or with defining surfaces (6) of the receiving opening. The distance between two parallels that intersect the screw edges at right angles is about the same as a standard spanner opening for profiles. Screw edges are provided for at least two standard spanner openings. Independent claims are also included for: (1) Spanner system comprising the above spanner; (2) Production line comprising the above spanner system; and (3) Use of a spanner system for turning a screw with a polygonal head in/out of an object.

Description

The The invention relates to a screwdriver with multiple key widths especially with several hexagon key widths for use in production lines of motor vehicles.

In Production lines of motor vehicles, especially in band assembly occurs frequently the problem is that at a screwing station, always the same Type of operation performed in the case of the production of several variants of a product considerable time delays occur.

This can lead so far that the screwing station in question becomes the bottleneck for the entire production line becomes.

task the present invention is therefore to provide a production line on which in particular motor vehicles can be mounted without delay.

These The object is achieved with the subject matter of the independent claims. Advantageous developments result from the respective dependent claims.

The The invention provides a screwing tool for fasteners, in particular for screws and Nuts with a hexagonal profile, in front.

The Screwing tool has a receiving opening for the hexagonal profile, the of contact surfaces for screw surfaces of the Hexagonal profile is limited. The contact surfaces form with boundary surfaces of the receiving opening one screw edge each. Already with two such Schraubkanten can one reliable hexagon profile rotate.

advantageously, the screw edges are formed so that the distance of each two parallels that the screw edges are substantially rectangular is approximately equal to a standard key width for hex screw heads. In the screwing tool according to the invention can be numerous Bolt edges are provided, which are advantageously designed so There are several standard key widths available for hex screw heads are.

With Such a screwing tool can be different size screw heads be screwed with a single screwdriver. This reduces the changeover times and simplifies the construction of a production line. The compliance The cycle time in a production line is simplified.

For example wheel nuts from different models can be quickly tighten without having to change the tool.

Leave standard screw heads very reliable tighten if the distance of one edge line, the two screw edges at right angles intersects, to another edge line, the other two Screw edges substantially perpendicularly cuts, about the same a standard key width for hex screw heads is. Then each screw head of at least four screw edges, better six bolted edges.

According to the invention are then for one Standard wrench size for hexagon screw heads six Edge lines and for another standard key width for hexagon screw heads six edge lines intended. It can even more standard key widths includes his.

Also according to the invention a screw system with an actuatable provided hydraulic, electric or pneumatic drive unit. The drive unit has a screwdriver shaft, on the a screwing tool according to the invention is attached. Such screw systems are, for example, as type "ECH16" from the company BoschRexroth-Bosch Automation available.

These Tightening systems have a rotation angle and torque monitoring, the one damage of screw heads and to avoid nuts. If in the manufacturing one Worker tries to set up the screwing tool according to the invention, then this is rarely added to the current position of the screwing profile, i. to the screw or nut fit. Just when screwing the screw or tightening the Nut is the screwing tool for a small angular misalignment slipping around on the screw head or on the nut circumference. With the rotation angle and torque detection, the screwdriver shaft slow and accurate in this time until the exact touch down on the profile be rotated with little torque, without damaging the profile. As soon as the torque detection has detected that the screwing tool sits clean on the profile, the screwdriver shaft is full Torque turned.

1 shows a view of a screwing tool according to the invention 1 , which has the shape of a socket, from below.

The screwing tool 1 has a base body 2 made of steel, in which a receiving opening 3 is provided. The receiving opening 3 is from first contact surfaces 4 and second on treads 5 limited. There are contact surfaces 4 ' and 5 ' intended to exert a torque in a clockwise direction on a screw head or nut not shown in this view. The contact surfaces 4 respectively. 5 are intended to exert on the screw head a torque counterclockwise.

In 1 is such a screw head indicated by dashed lines.

Except the first contact surfaces 4 respectively. 4 ' and the second contact surfaces 5 respectively. 5 ' are still boundary surfaces 6 provided, each between a first contact surface 4 and a second approach surface 5 extend.

In this case, a first screw for the smaller screw head between a respective boundary surface 6 and a first contact surface 4 educated. A second screwing edge for the smaller screw head is between a first contact surface 4 ' and a boundary surface 6 educated.

Bolt edges for the larger screw head are each between a second contact surface 5 and 5 ' educated.

The geometric descriptions of the position of the Schraubkanten results from the drawing. The best way to make a smaller and a larger screw head to reproduce the drawing by two copies of 1 make and cut out the two screw heads. With the cut-out screw heads, the geometric relationships and the position of the screw edges are particularly easy to understand.

The main body 2 has on the opposite side of the other opening a square opening 7 on, in which the screwdriver shaft of a not shown in this view screwing can be plugged with an EC motor and a reduction gear. The screw system is operable and has a torque monitoring, so that the attached to the smaller screw head body can just turn so fast that the particular screw for the smaller screw head can engage without destroying the screw head.

1

Wrench

2

body

3

receiving opening

4

first approach surface

5

second approach surface

6

boundary surface

7

Square hole

Claims (10)

Screwing tool for a profile with the following features: - a receiving opening ( 3 ) for the profile, - the receiving opening ( 3 ) is supported by contact surfaces ( 5 . 5 '; 4 . 4 ' ) is limited for screw surfaces of the profile, which with other contact surfaces ( 5 . 5 '; 4 . 4 ' ) or with boundary surfaces ( 6 ) of the receiving opening ( 3 ) each form a screwing edge, wherein the distance of each two paralleles, which intersect the screw edges substantially at right angles, is approximately equal to a standard key width for profiles and wherein screwing edges are provided for at least two standard key widths. Screwing tool according to claim 1, characterized that being the distance of one edge line, the two screw edges at right angles intersects, to another edge line, the two other screw edges essentially perpendicularly intersects, approximately equal to a standard key width for screw heads is. Screwing tool according to claim 1 or claim 2, characterized in that per standard key width for profiles provided six edge lines are. Screwing tool according to one of the preceding claims, characterized in that a hexagonal profile is provided as the profile. Screwing tool according to one of the preceding claims, characterized in that a screw head is provided as the profile. Screwing tool according to one of the preceding claims, characterized in that a screw nut is provided as the profile is. Screwing tool according to one of the preceding claims, characterized by the shape of a socket. Tightening system with an actuatable drive motor, which has a screwdriver shaft, to which a screwing tool ( 1 ) is placed according to one of the preceding claims. Production line with a screw system according to claim 8. Use of a tightening system with a screwing tool according to one of the claims 1 to 7 for screwing a screw with polygonal head into an object and / or to unscrew a screw with polygonal head from a Object.