To balance automatic transmissions and their components, Hofmann offers a versatile range of machines based on the specially developed V-Line module kit.
Rotors of automatic transmissions are: torque converter assembly, turbine, stator, coupling, damper, sungear, annulus or ring gear carriers, clutch case, clutch retainer, carrier and also the drive and output shafts with the pertaining drive or output flanges.
With the aid of the V-Line module kit, suitable machine concepts in single-station, two-station or even four-station design can be provided with the various possibilities of unbalance correction. Thanks to Hofmann’s in-house development of all components and assemblies, the Hofmann V-Line module kit offers a consistent machine concept that can be expanded at any time. Unbalance correction can be performed through a combination of mass removal and mass addition, as in machines for sungears and ring gear carriers. First, holes are punched, and then heavier correction rivets are pressed into them in the subsequent cycle.
State-of-the-art technologies like torque spindles and quality features like the specially developed automatic calibration system, play an important role in these machine types. Even special solutions, such as balancing machines for rear-axle gear units where the drive train is clamped and driven by a diaphragm clamping system with a defined dummy mass, can likewise be implemented with Hofmann’s module kit and the included modules.
Type TCV
Various machine concepts are available for balancing torque converters. From the fully automatic single-station machine where unbalance is measured and corrected in the same station, up to a fully automatic four-station machine. The decision regarding the required number of stations depends on the specified cycle time. In a four-station variant, cycle times of less than 24 seconds can be accomplished. Thanks to the latest torque drive technology, both powertrains on the primary side (converter casing) and on the secondary side (stator and turbine) can be equipped with one direct drive.
Loading can be done manually by crane, or it can be automated by a robot, loading gantry, or an interlinked line via an integrated round transfer.
Special features
Application
Type CVW11-S
Various machine concepts are available for balancing converter turbines. From the fully automatic single-station machine where unbalance is measured and corrected in the same station, up to a fully automatic four-station machine. The decision about the required number of stations depends on the specified cycle-time. In the four-station variant, cycle times of less than 24 seconds can be achieved.
Loading can be done manually, or it can be automated by a robot, loading gantry, or an interlinked line via an integrated round transfer.
Special features
Application
Type CVW11-F or CVW11-B
Various machine concepts for balancing converter stators are available: From the fully automatic single-station machine where unbalance is measured and corrected in the same station to the fully automatic four-station machine. The number of stations required depends on the specified cycle time and the selected machine concept.
Unbalance correction may be performed either by milling or drilling, depending on the drawing specification. Loading may be manual or automated by a robot, loading gantry or by an interlinked line via integrated round transfer.
Special features
Application
Type CVW11 or CVK11
For machines used to balance sungears, a distinction is made between a single-plane or two-plane machine, depending on the customer’s requirements. The selection of a single- or dual-plane variant is made by the customer, depending on the geometry and installation position of the sungear.
Unbalance correction likewise depends on the component geometry and installation position and may occur either via two-plane correction by hole punching or combined correction including hole punching and subsequent insertion of correction rivets. Loading can be manual by the operator or by an interlinking system and integrated round transfer on the machine side.
Special features
Application
Type CVW11-F
Various machine concepts are available for balancing plate carriers: From the fully automatic single-station machine where the unbalance is measured and corrected in the same station, to the fully automatic four-station machine. The decision about the required number of stations depends on the specified cycle time and the selected machine concept.
Unbalance correction may be performed by milling or by hole punching depending on the drawing requirement. Loading can be manual or automated with a robot, loading gantry, or interlinked line via integrated round transfer.
Special features
Application
Type CVK11
Depending on customer requirements, the balancing machines for drive shafts differ between single-plane and two-plane machines, sometimes also in combination with measurement in two planes and correction in one plane only. Correction is usually performed by radial drilling, for example, in predefined areas, partly taking into account bias masses (for example, oil bore).
Loading is either manual by the operator or automated by an interlinking system and an integrated round transfer on the machine side.
Special features
Application
Type CVK11
Depending on customer requirements, the balancing machines for output shafts differ between single-plane and two-plane machines, sometimes also in combination with measurement in two planes and correction in one plane only.
Correction is usually performed by radial drilling, for example, in predefined areas, partly taking into account bias masses (for example, oil bore). Loading is either manual by the operator or automated by an interlinking system and an integrated round transfer on the machine side.
Special features
Application
Type CVW11
In the unbalance measuring machines for annulus gears, the unbalance of the rotor is measured in one plane. Optional unbalance correction, for example by radial drilling into the external teeth, is available.
Loading is, depending on specified cycle time requirement and machine design, either manual by the operator or by an interlinking system and integrated round transfer on the machine side.
Special features
Application
Type CVW11
In the balancing machines for ring gear carriers, unbalance measurement and unbalance correction are performed in one plane. Unbalance correction is dependent on installation position and customer requirement, so correction is either performed by hole punching, or by a combination of hole punching and insertion of correction rivets.
Loading is, depending on the specified cycle time and the machine design, either manual by the operator or by an interlinked system and round transfer integrated on the machine side.
Special feautures
Application
Type CVW11-B
Various machine concepts are available for balancing clutch retainers: From the fully automatic single-station machine where the unbalance is measured and corrected in the same station to the fully automatic four-station machine. The number of stations required depends on the specified cycle time and the selected machine concept.
Rather than the usual component fixture in the center bore of the workpiece, the clutch retainer is held in the planetary bores using special clamps. To enable this in balancing machines with fully automatic loading and unloading, prior recognition of workpieces in relation to the angular position of the planetary bores and the oil bores is needed.
Unbalance correction usually occurs via axial drilling, carried out with a stepped drilling tool. Loading may either be manual or automated by a robot, loading gantry, or in an interlinked line via integrated round transfer.
Special features
Application
Type CVK11
In the balancing machines for aluminum hubs, (sometimes referred to as clutch housings) unbalance is measured and corrected in two planes. The clamping for unbalance determination is achieved by a special clamping system in the two reference planes of the rotor.
Depending on the component geometry and installation position, correction is either performed with the same hole diameter for both correction planes or with a stepped drilling tool for several diameter specifications. Depending on the specified cycle time, one to four drilling units can be mounted on the servo-motor driven vertical slide.
Loading is either manual by an operator or automated by a robot system. If a two-station machine is used, loading may also occur by an interlinking system and integrated round transfer on the machine side.
Special features
Application
Type CVW11
In the balancing machines for drive, output and joint flanges, the unbalance measurement and correction are performed in one plane. The unbalance correction depends on the component geometry and the customer requirement and may be carried out by circular milling on the front side of the flange arms or also by radial or axial drilling into the flange arms.
Depending on the specified cycle time, these machines may be designed as single-station, two-station or four-station machines. In the single-station machine, loading is either manual by the operator or by a robot system. In the multi-station machines, loading is by an interlinking system and integrated round transfer on the machine side.
Special features
Application
Type CVW11-B
Various machine concepts are available for balancing vibration absorbers: From the fully automatic single-station machine where the unbalance is measured and corrected in the same station to the fully automatic four-station machine. The decision about the required number of stations depends on the specified cycle time and the selected machine concept.
Unbalance correction usually is performed through axial drilling. Loading may be manual, automated by a robot, loading gantry, or in an interlinked line via integrated round transfer.
Special features
Application
Type DHK11-F
Production systems of the DHK series are horizontal measuring machines with a downstream unbalance correction in one and two correction planes.
Special features
Application
Additional product information
Type DVK11-F
Production equipment of the DVK series are vertical measuring machines with downstream unbalance correction in one or two correction planes.
Special features
Application
Additional product information
Type DVW
The type DVW balancing machines are used to measure unbalance and remove mass by radial drilling on the drive flange in one correction plane. By placing a dummy mass, the subsequent installation situation can be simulated and predefined in the correction calculation. Loading is either manual by the operator or automatic by integration in an existing robot cell or a loading gantry.
Special features
Application
Additional product information
Type CVW-N
The type CVW-N balancing machine reduces unbalance by inserting a rivet in pre-punched correction holes. Suggestion: Both the supply and caulking of the rivet and the control measurement is implemented in a single station for increased efficiency.
Special features
Application
Additional product information
