SolidWorks Episode 11: Assembly Design, Mates & Exploded Views for Mechanical Engineers (Updated June 2026) (Updated June 2026)

AURIC's ₹71,343 crore investment is creating 62,405 direct manufacturing jobs in Sambhajinagar — and virtually every mechanical design role at Bajaj Waluj, Endurance Technologies, or Skoda VW Shendra requires assembly design skills in SolidWorks. Here's the thing — most SolidWorks learners are comfortable with single-part modelling by Episode 6 or 7, but assembly is where the real product engineering happens. You are not designing individual parts; you are designing how parts fit together, move relative to each other, and can be manufactured and assembled on the shop floor. Episode 11 covers the complete assembly workflow: inserting components, applying mates to constrain their degrees of freedom, checking for interference, creating exploded views for assembly instructions, and understanding when to use top-down versus bottom-up design strategy.

Starting a SolidWorks Assembly: Inserting Components and the First Fixed Part

A SolidWorks assembly (.sldasm) is a file that references individual part files (.sldprt) — the assembly does not contain the geometry, it links to it. This means changes to the part automatically update in the assembly — and in all drawings referencing that part. When you create a new assembly (File > New > Assembly), SolidWorks immediately asks you to insert the first component. The first component you insert should be your base component — the housing, frame, or structure that everything else mounts to. Make this component Fixed (right-click > Fix) so it does not move relative to the assembly origin. Every subsequent component starts Floating (all 6 degrees of freedom free) and is constrained using mates. The FeatureManager tree in an assembly shows the assembly hierarchy: sub-assemblies expand to show their components; each component shows its mates. Understanding this tree is how you navigate and troubleshoot complex multi-level assemblies. Episode 11 builds a complete 8-component assembly step by step so you see the entire workflow from empty assembly to fully mated, interference-checked, exploded-view-documented product.

SolidWorks Mates: Constraining Parts to Reflect Real-World Assembly

Mates are the relational constraints that define how components are positioned and how they move relative to each other. Standard Mates are the workhorses: Coincident forces two faces, edges, or points to share a plane (zero distance between faces); Concentric forces two circular or cylindrical features to share an axis (essential for shafts in bores, bolts in holes); Parallel forces two planes or axes to be parallel; Perpendicular forces them to be 90 degrees; Tangent forces a curved face to be tangent to another face. Each mate removes one or more degrees of freedom — a Coincident mate on two faces removes 1 translational DOF; an Axial Coincident (concentric + coincident) removes 5 DOF, leaving only rotation around the axis free (which is correct for a shaft). Advanced Mates include Cam (follower rides on a cam profile), Gear (links rotation of two gears by their ratio), Width (centers a component between two faces), and Path (component follows a 3D path). Mechanical Mates like Hinge combine multiple standard mates into a single operation. In Episode 11, we mate a flanged shaft to a housing bore using concentric plus coincident, position a gear set using gear mate, and assemble a fastener pattern using Smart Fasteners — the SolidWorks tool that automatically inserts standard bolts, washers, and nuts into hole patterns.

SolidWorks Mate Type	DOF Removed	Typical Use Case	Notes
Coincident (face-face)	1 translational	Mating flat faces together	Also works on edges and points
Concentric	2 translational	Shaft in bore, bolt in hole	Leaves axial and rotational free
Parallel	2 rotational	Aligning plates or rails	Allows sliding along surface
Distance	1 translational	Setting a specific gap or offset	Flip dimension for opposite side
Angle	1 rotational	Fixing a component at a rotation angle	Common for levers and cams
Gear Mate	Links rotation ratio	Simulating meshing gears	Set pitch ratio correctly

Interference Detection and Clearance Verification Before Manufacturing

Before you release drawings to manufacturing, you must check that components do not physically interfere with each other. Interference Detection (Evaluate tab > Interference Detection) calculates and highlights any geometry overlap between components in the assembly. The results panel shows each interfering pair, the volume of interference, and highlights the intersection in red in the 3D view. Common interference sources: insufficient clearance in a bore for a shaft shoulder; fastener head hitting a counterbore wall; adjacent moving components clashing at one end of their travel range. Clearance Verification checks the minimum gap between non-interfering parts — critical for moving mechanisms where you need to guarantee separation throughout the motion range. In Episode 11, we deliberately introduce two interferences in our example assembly — a shaft shoulder touching a snap ring groove, and a cap screw head overlapping a bore chamfer — use Interference Detection to identify them, return to part modelling to correct the dimensions, and re-run the check to confirm resolution. This workflow is exactly what a product release engineer at Bajaj Auto or Mahindra performs before signing off on a drawing package.

Creating Exploded Views and Explode Lines for Assembly Documentation

Exploded views are the assembly drawings that show how products come apart — they are essential for service manuals, assembly instruction sheets, and spare parts catalogs. In SolidWorks, exploded views are created in the ConfigurationManager (the tab next to FeatureManager that looks like two overlapping pages). Right-click the active configuration (typically Default) and select New Exploded View. In the Explode dialog, you select components and define explode steps — each step moves one or more components along an axis by a specified distance. SolidWorks arranges the explode steps in a logical sequence. After creating the explode steps, add Explode Lines (Insert > Explode Line Sketch) — these are the leader lines that connect each component's exploded position back to its assembled position, making the exploded view readable as an assembly instruction. Once the exploded view is created, you can reference it in a SolidWorks Drawing by selecting it in the Drawing view configuration options. Episode 11 creates a 5-step exploded view of our example assembly with full explode lines, then places it in a formatted A3 drawing sheet with a bill of materials table that pulls part numbers, descriptions, and quantities automatically from the assembly. This complete exploded drawing is a real deliverable — the kind L&T, Force Motors, and Whirlpool expect from a design engineer.

Top-Down vs Bottom-Up Assembly: Choosing the Right Strategy

Bottom-up design is the traditional approach: design individual parts first, then assemble them. Most training starts here because it teaches part modelling before assembly. Top-down design starts with the assembly context — you define component geometry by referencing other components using In-Context features and External References. When a shaft diameter needs to match a bore, in top-down design you drive the shaft from the bore dimension rather than setting them independently. This is powerful for tight-fitting mechanisms and ensures components automatically update when a key dimension changes. The risk: external references create a dependency between part files that can break if files are moved or renamed. For most mechanical engineers at Bajaj, Mahindra, and Tata Tech, the practical answer is hybrid: use bottom-up for standard and bought-out components, use top-down for custom components that interface closely with each other. Episode 11 demonstrates both approaches on the same assembly so you understand the trade-offs rather than just the mechanics.

Assembly Design Jobs in Pune, Sambhajinagar, Sangli and Kolhapur 2026

Mechanical and product design assembly engineers in demand (June 2026): Bajaj Auto, Akurdi Pune — 164+ openings including product design, vehicle assembly, and NPI engineers using SolidWorks; Endurance Technologies, AURIC Plot E-92 Chikhalthana Sambhajinagar — design engineers for two and three-wheeler components; Skoda Auto Volkswagen India, AURIC Shendra Plot A-1/1 Sambhajinagar — body and interior assembly design; Mahindra and Mahindra, Nasik plant and Research Valley Chakan — product design engineers; Tata Technologies, Hinjewadi IT Park Tower A Pune — SolidWorks assembly designers for global automotive programs; Whirlpool India, Ranjangaon MIDC Pune — product engineers for appliance assemblies; Bharat Forge, Kagal Five-Star MIDC Kolhapur — component and tooling design; Toyota Kirloskar, AURIC Bidkin Area Sambhajinagar — assembly and manufacturing engineering. Call +91 7039169629 or WhatsApp 7774002496 for course details.

Maharashtra's Chief Minister Yuva Karya Prashikshan Yojana (CMYKPY) provides a monthly stipend of ₹6,000–₹10,000 to eligible candidates during government-approved technical training. ABC Trainings offers SolidWorks batches at Pune (Wagholi, Hadapsar), Sambhajinagar (CIDCO), and Sangli. Call +91 7039169629 to check eligibility.

FAQs

What is the difference between a Fixed and a Floating component in SolidWorks assembly?

A Fixed component is anchored to the assembly origin — it cannot move regardless of what mates are applied to it. It is displayed with (f) in the FeatureManager tree. A Floating component (shown with a minus or question mark prefix) has its position determined entirely by its mates with other components. Best practice: fix your base component (the primary housing or frame) and float all other components, constraining them with mates relative to the base. This ensures the assembly behaves predictably when you edit part dimensions.

What does over-defined mean in SolidWorks assembly and how do I fix it?

Over-defined means a component has more constraints applied than it has degrees of freedom — the mates conflict. Common causes: two Coincident mates on faces that already constrain the same DOF, or a Distance mate added after a Coincident mate already set that distance to zero. To fix it: check the What is Wrong dialog (the red flag in the FeatureManager), identify the redundant mate, and delete it. Suppress one conflicting mate to test which one is redundant. Over-defined assemblies should always be resolved before creating drawings.

Can SolidWorks assemblies simulate motion and check for moving interference?

Yes — SolidWorks Motion Study (in the Motion Study tab at the bottom of the screen) simulates mechanism motion. You can define motors, springs, dampers, and gravity, then run an animation and check for moving interference throughout the motion range. Motion Study in Assembly Mode checks interference at every time step of the simulation. For more advanced dynamic analysis (forces, torques, stresses on moving parts), SolidWorks Motion integrates with SolidWorks Simulation to perform kinematic and dynamic analysis.

What salary can a SolidWorks assembly design engineer expect in Pune in 2026?

Based on AmbitionBox and Glassdoor data (June 2026): SolidWorks assembly design engineers at 1–3 years earn ₹4.5–7 LPA at Tier-2 vendors and component suppliers in Pune and Sambhajinagar. At 3–5 years with full NPI lifecycle experience from concept to released drawing package, the band moves to ₹9–14 LPA. Senior design leads at OEMs like Bajaj, Mahindra, or Tata Tech with 7+ years reach ₹16–26 LPA. Adding SolidWorks Simulation or PDM expertise raises offers by 15–25%.