Mit der `pgfplots` Bibliothek `groupplots` geht das relativ komfortabel.
    \documentclass{article}
    \usepackage{textcomp}
    \usepackage{tikz}
    \usepackage{pgfplots}
    \pgfplotsset{compat=newest}
    \usepgfplotslibrary{groupplots}
    \begin{document}
    \begin{figure}[ht]
      \centering
      \begin{tikzpicture}
        \begin{groupplot}[group style={
            group name=whatever,
            group size=2 by 1,
            y descriptions at=edge left,
horizontal sep=2cm,
          },
          width=5cm,height=5cm,
width=6cm,height=6cm,
          enlargelimits=false,
          xmode=log,
          xtick={0.02,0.05,0.1,0.2,0.5,1.0},
          ymin=0, ymax=1000,
          ytick={0,250,500,750,1000},
          log ticks with fixed point,
          xlabel={Zustellung $a_{e}$ in mm},
          ylabel={Grathöhe in \textmu m},
          ticklabel style={
            /pgf/number format/.cd,
            use comma,
            1000 sep={},
          }
          ]
        \nextgroupplot[
          legend entries={Graph1, Graph2},
          legend to name=named,
          ]
    
          \addplot [color=red, thick, mark=o]  coordinates {
            (0.02,68)
            (0.05,416)
            (0.2,441)
            (0.5,309)
            (1.0,351)
          };
    
          \addplot [color=blue, thick, mark=square] coordinates {  
            (0.02,119)
            (0.05,389)
            (0.1,408)
            (0.2,359)
            (0.5,268)
            (1.0,283)
          };
    
          \node[below right] at (rel axis cs:0,1) {$\gamma = 90^\circ$};
    
          \nextgroupplot
    
          \addplot [color=blue, thick, mark=square] coordinates {  
            (0.02,389)
            (0.05,672)
            (0.2,829)
            (0.5,360)
            (1.0,776)
          };
    
          \addplot [color=red, thick, mark=o]  coordinates {
            (0.02,252)
            (0.05,239)
            (0.1,322)
            (0.2,519)
            (0.5,433)
            (1.0,479)
          };
    
          \node[below right] at (rel axis cs:0,1) {$\gamma = 60^\circ$};
        \end{groupplot}
        \path (whatever c1r1.north) -- node[shift={(0,.5)}] {Grathöhe $h_{0}$} (whatever c2r1.north);
        \path (whatever c1r1.south) -- node[shift={(0,-1.7)}] {\ref{named}} (whatever c2r1.south);
      \end{tikzpicture}
    \end{figure}
    
    \end{document}
[![alt text][1]][1]
  [1]: https://texwelt.de/wissen/upfiles/test_421.pnghttps://texwelt.de/wissen/upfiles/test_422.png