TD AXIOM / Product development preview
VDI 2230 · Visual engineering · AI assistance
Start with a drawing or CAD model and work through preload, strength verification and calculation reporting. Review and revise the engineering decisions in one workbench.
Standalone desktop software · VDI 2230 design verification · Optional AI assistance
Thread Designer® Engineering Suite 4.0 · Development preview
01 / THREE WAYS IN. ONE ENGINEERING PROJECT.
Model from known dimensions, define calculation objects from existing CAD, or use AI to help interpret a drawing and build a model. Each route leads to the same inputs, checks and deliverables.
Select the fastener and joint configuration. Define dimensions, materials, assembly method and operating conditions. Parameters stay linked to the geometry so changes remain traceable.
Standard fastener · Multi-layer clamped parts · Parameter-driven.Retain the part geometry and identify bolt axes, bearing faces and contact interfaces. Use that information to build the engineering model directly from CAD.
Parts and assembly · Face selection · Geometric simplification and verification.Provide drawings, materials and design objectives. AI helps extract dimensions and organize modeling and verification steps. Engineers control critical decisions and approved changes.
Drawing understanding · Tool execution · Result verification02 / THE REAL AXIOM WORKSPACE
The B1 example shows the model, materials, loads, verification results and calculation report. Trace each result to the workbench objects and parameters.
Clear object referencesParameters refer to specific parts, bearing faces and contact interfaces, so each value has a clear physical reference.
process continuityAfter modifying the input, check the related geometry and results, so that subsequent judgments are based on the current engineering context
result availableReview the calculation steps, parameters used, and applicable conditions from the safety factor perspective.
03 / FROM DRAWING TO A WORKING PROJECT
Read the diagram, construct the solid, configure the engineering, execute the verification, and organize the calculation book. AI understands the design intent and proceeds through software internal objects and operations. Each stage has verifiable inputs, geometry, and results.
The piston is coaxially aligned with the internal threaded body, and the screw is supported on the stepped hole.
Dimensions are taken from B1 engineering reference drawing, can be magnified for individual verification.
Read the outer diameter, stepped hole, blind hole depth, and coaxial relationship. Geometric dimensions and thread engineering definitions are recorded separately. Missing or conflicting information is left to the engineer to judge.
B1 case flow demonstration: Reference figure, CAD model, and results come from the same engineering. The web page plays the pre-set steps without calling AI, and the playback duration does not represent actual processing time.
Know what 'this material', 'this hole', and 'this modification' refer to. Drawing information, existing engineering, and user requirements enter the task context together.
Complete modeling, input, check, and calculation through software tools. It can handle tasks from scratch and also continue modifications on existing engineering.
Show plans, changes, engineering assumptions, and execution results. Tasks can be paused, and key decisions are confirmed by engineers.
MORE THAN ONE WORKFLOW
Read current engineering, locate control items such as clamping force, fatigue, support surface, or thread engagement, and explain why.
Change specified parameters while retaining the baseline scheme, compare the benefits, costs, and new constraints.
Connect formal input, calculation results and basis, form a structurally complete report, then reviewed by engineers.
04 / VDI 2230, AS AN ENGINEERING WORKFLOW
From assembly scatter and required clamping force, to compliance, load distribution, and preload, to static strength, fatigue, bearing, engagement, and tightening torque. Each conclusion is not an isolated single number.
Select step, view the problem it solves
R0 is used for preliminary specification and geometric dimension estimation; R1–R13 constitute the main line of subsequent calculations. The specific standard version and applicable conditions will be specified in the engineering context.
05 / ONE CHANGE. A VISIBLE CONSEQUENCE.
First clarify the conditions that remain unchanged, then change one quantity, and finally compare the results. The following two interactions are independent: one explains assembly, the other explains service.
01 / Friction during assembly
Fix the thread, support size, and total torque, and only change one friction. The current point on the curve is the preload obtained under these conditions.
Thread pitch diameter d2 = 10.863 mm
Effective support friction diameter DKm = 16.0 mm
Support Friction μK = 0.120 (Fixed)
Reference state: μG = μK = 0.120
When friction increases, the torque required to achieve the same axial force increases; the total torque remains 80 N·m, so the actual obtained preload decreases.
Use the standard metric 60° thread for torque balance. DKm Yes, this is the effective friction diameter given in this experiment; the thread pitch uses the basic size of M12 × 1.75. The two frictions are input separately. After switching experiments, the friction coefficient not selected is fixed at 0.120.
aG = (d2/2) · (tan λ + μG/cos 30°) / (1 − tan λ · μG/cos 30°)，tan λ = P/(πd2)；aK = μKDKm/2。
current aG = — mm，aK = — mm。MA When calculated in N·m with the lever arm in mm, the result is F.M unit is kN.
pitch term MP = FMP/(2π); thread friction term = FMaG − MPSupport friction term = FMaKTorque is allocated based on actual calculation results; individual values are retained to two decimal places, and the total is calculated using the non-rounded value.
This experiment shows the torque-preload relationship under determined friction conditions. Formal assembly design also needs to consider the friction range, tool scatter, strength, and support pressure; 80 N·m is a demonstration input.
Reference formula:NASA《Fastener Design Manual》，Fastener TorqueParameter distinction reference Bossard torque and preload calculator。
02 / Load Distribution of Preloaded Connection
This time, the fixed preload and stiffness on both sides are kept, and only axial tension is increased. Using the classic force-deformation diagram, observe how bolt loading and clamped member unloading occur simultaneously.
Bolt stiffness cS = 200 kN/mm
clamping stiffness cP = 800 kN/mm
Axial tension · Load introduction on support surface · n = 1
Load distribution coefficient Φ = 0.20
relative assembly +5.0 kN
relative assembly −20.0 kN
After applying 25.0 kN axial tensile force, the bolt increases by 5.0 kN tensile force, and the original clamping force decreases by 20.0 kN; together they satisfy the external load balance.
The rising line is measured from the left origin for bolt elongation; the falling line is measured from the right zero force point in reverse for clamp compression. During assembly, bolt elongation fSM = 0.200 mm, clamp compression fPM = 0.050 mm. After service, two points move to the right along the same additional deformation u.
Use a coaxial, linear elastic, n = 1 dual spring model, with load introduced from the support surface. This experiment fixes the assembly preload at 40 kN, independent of the upper friction test; no account is made of embedded losses, temperature changes, or bending.
FS = FM + ΦFA；FK = FM − (1 − Φ)FAUnder this stiffness, each increase of 1 kN external load increases the bolt tension by 0.2 kN and decreases the clamping force by 0.8 kN.
u = FA/(cS + cP) u is the additional elongation of the bolt, which is also the compression rebound of the clamped part. When contact closure occurs, it is not the interface gap.
FA,sep = FM/(1 − Φ) = 50 kN. When reaching this boundary, FK = 0，FS = FAThe slider stops here; the separation state after continued loading is not included in this experiment.
This figure explains the basic elastic relationship. The actual load introduction, eccentricity, local separation, and complete strength determination of real connections should be calculated using actual structures and operating conditions.
Illustration and basic relationship reference:NASA 'Fastener Design Manual', Figure 27；GWJ eAssistant，VDI 2230 Joint Diagram。
06 / DESIGN IS A BALANCE
Low preload may cause the connection to lose function; high preload may cause assembly and local loading to become limiting factors. Axiom hopes to move the scheme selection from repeated trial numbers to targeted comparisons.
Select a design problem, and view the benefits and constraints that need to be considered simultaneously.
Retain the baseline scheme, compare input changes, control verification, and assembly parameters under the same operating condition.Do not replace complete judgment with a single indicator.
07 / FROM AN ANSWER TO A DELIVERABLE
Organize parameters, formulas, stage results, control conditions, and assumptions into a calculation book. Designers can continue modifying, reviewers can check the logic, and assembly loops can find the required parameters.
Presentation uses input, calculation steps, margin, and control items. Readers can understand the results and know under what conditions the conclusions are valid.
Clarify user input, standard data, geometric measurement, and engineering assumptions to avoid losing references during discussion and modification.
Face scheme argumentation, design verification, and assembly parameter communication. This example is a draft of the calculation book, and formal delivery requires completing engineering drawings and review.
For the same engineering project, retain the path from problem to conclusion.
08 / ONE FOUNDATION, MANY CONNECTIONS
Product planning focuses on connection objects, loading modes, and working stages, rather than just a single standard example. Applicability and necessary engineering simplifications must always be clearly defined.
Through-hole bolt—nut connection, inset connection, multi-piece clamping components, ring and prism parts, and connection structures with eccentricity.
Axial and lateral loads, moments, working load range, assembly scatter difference, embedded loss and temperature effects.
Pre-specification selection, existing structure verification, scheme adjustment, parameter sensitivity comparison, and communication with reports and assembly parameters.
Around clear load distribution and representative bolts, develop verification engineering. Retain the conditions and results of each member, and do not treat the entire group of loads as the load of a single bolt.
09 / BEFORE YOU START
Understand Product Progress, AI Collaboration Methods, and the Applicability of Web Cases.
Axiom is currently in the development stage. The page includes current software screenshots and planned function demonstrations; the function range, system requirements, and delivery method will be explained at the official release.
No. AI is used for understanding tasks, organizing steps, and executing software operations. The calculations still come from engineering models and tool results. Key operating conditions, design criteria, important assumptions, and final engineering conclusions require engineer verification.
Axiom is based on independent engineering software. Parameter input, CAD organization, VDI calculation, result verification, and calculation book are not solely entered through chat; AI is a collaborative method, not a replacement for the engineering core.
No. The two interactions separately show simplified assembly torque relationship and axial force-deformation relationship. Fixed conditions and boundaries are listed in each diagram. They are for understanding the mechanism, not for direct use in issuing design safety conclusions.
This web page does not upload files or call AI services. Formal software AI collaboration requires explicitly defined sending ranges based on selected services and permissions; check local data management and external model request permissions before use.
TD Axiom establishes design benchmarks for joints using standard methods. When further research is needed, find the corresponding professional tools along the current issue.
Cross-product data collaboration belongs to the kit planning direction, specific integration is subject to official release notes.
DESIGN WITH A REASON. BUILD WITH CONFIDENCE.
Learn about TD Axiom's development progress, exchange your structure, operating condition and design requirements
haoyuruilianTJ@163.com