Special purpose machinery design
Benches, trolleys and transport tables, welding positioners, tilting systems, handling equipment. Modelling, assembly drawings and detail drawings.
Our expertise › Machinery design and conformity
Secure · Mechanical engineering
Design a machine, and be able to prove it
Special purpose machinery, high precision tooling, test benches and production equipment. We carry the study, the regulatory file and the manufacturing follow-up, through to acceptance. Fabrication is entrusted to workshops we select and supervise: we are a design office, not a manufacturer.
Services
From preliminary design to acceptance
Special purpose machinery is not a catalogue item: it is designed for one workstation, one flow and constraints that exist nowhere else. We work across the whole chain, or on the single link you are missing.
High precision tooling
Assembly jigs, drilling and inspection fixtures, machining supports. Functional dimensioning and tolerance chains held through to the delivered part.
Calculation and simulation
Structural sizing, finite element verification, calculation reports you can rely on. Assumptions are written down, not assumed.
Technical file and risk assessment
Compilation of the Annex VII file, risk assessment, instructions, assembly instructions and declaration. The file is kept for ten years and must be producible.
CE marking and conformity
Choice of conformity route, with or without a notified body, preparation of the declaration and the marking. Directive 2006/42/EC today, Regulation (EU) 2023/1230 tomorrow.
Manufacturing follow-up and acceptance
Workshop sourcing, subcontractor coordination, manufacturing follow-up at the fabricator, load testing and determination of the safe working load, site acceptance.
Types of equipment
What our engineers have designed
A few families of equipment taken from study through to acceptance. Client names, amounts and durations are not published, and neither are the drawings.
Positioner and welded frame
Holding and tilting structure, designed to present the part to the operator without effort or constrained posture.
Platform and handling equipment
Welded steel deck with fitted supports, sized for the load and for the lifting forces.
Ring assembly tooling
Holding and positioning frame, fitted with clamps distributed around the circumference.
Design model
Assembly modelled before manufacture: frame, support cradles, castors and handling drawbar.
These items were designed by the engineers on our team over the course of their careers, and fabricated by partner workshops. We present them as their experience, not as firm references. HEMC owns no workshop and no production equipment: the photographs show items that came out of third party workshops, under supervision. The images were selected and cropped so that they carry nothing identifying a client.
Projects delivered
Ten projects, from study to acceptance
Each line is a project actually carried out by the engineers on our team. Client names, durations and amounts are not published, and two titles have been made generic so that no client can be identified.
Aerospace
Thrust reverser integration and commissioning bench
Assembly and functional test bench: holding cradles, fine adjustment of the engine axis and integrated control desk.
Design and project management
Aerospace
Support trolley, series of ten
Handling trolley designed for series production: lightweight welded structure, interchangeable cradles and braked swivel castors.
Ten units delivered
Space
Special purpose machine for transporting a propulsion assembly
Transport and positioning equipment: oversized frame, adjustable holding rings, hydraulic stabilisers and towing drawbar.
Project manager
Agricultural machinery
Welding positioner for robots
Positioner presenting the part to the welding robot, with motorised tilting and rotation and position indexing.
Tilting and rotation
Space
Ground support system for deployment testing
Ground support for workshop deployment tests: load take-up, height adjustment and removable interfaces.
Deployment testing
Industrial gases
Tank tilting system
Tilting system driven by a hydraulic cylinder, with wrap-around cradle, end stops and remote control.
Hydraulic cylinder drive
Aerospace
Tracking system
Motorised two-axis orientable assembly, with gearboxes, position sensors and protective housing.
Azimuth and elevation
Aerospace
Transport table
Rolling table with a flanged deck for moving long parts, with fitted supports and handling grips.
Flanged aluminium deck
Aerospace
Countersinking jig
Drilling and countersinking tooling set on the part, with guide bushes and locating pins to hold position.
Bushes and locating pins
Automotive
Suspension membrane removal tooling
Removal and reconditioning station: two-column frame, rotating part-holding table, operator station and control cabinet.
Sizing validated by an external calculation office
Regulatory framework
Two texts, and a switch to prepare
CE marking of a machine is not a logo: it is a declaration by which a person takes on liability. The most frequent difficulty comes from one question badly settled at the outset, that of who the manufacturer is. A plant that builds a workstation for its own line is one, within the meaning of the directive, with every obligation that follows.
Directive 2006/42/EC is repealed with effect from 20 January 2027 by Regulation (EU) 2023/1230. The regulation brings requirements the directive ignored: software becomes a safety component, protection against corruption becomes an essential requirement, and a new category of products leaves no self-certification route at all. Machinery designed today and delivered in 2027 is decided now.
A machine project, or a file to take over
Describe the need, even roughly. We will tell you what is design, what is conformity, and what can wait.