An automatic matchmaking device, comprising:
- a machine body,
- a cylindrical machining cavity arranged in said machine body,
- a material cavity with an opening towards one side communicated with an inner wall of one end of said cylindrical machining cavity,
- first guide chutes which are up and down symmetrical communicated with upper and lower inner walls of said material cavity,
- wherein inner walls of said first guide chutes, far away from said material cavity, are internally communicated with second guide chutes;
- a first cavity which penetrates through said cylindrical machining cavity disposed in said machine body,
- a cutting cavity communicated with an inner wall of the other end of said cylindrical machining cavity,
- a material returning outlet which is tilted downwards communicated with an inner wall of the bottom of said cutting cavity,
- second cavities which are symmetrical on upper and lower ends of said cutting cavity arranged in said machine body,
- a third cavity which is on one end of said cutting cavity arranged in said machine body,
- wherein said cylindrical machining cavity is internally in rotational engagement with a hollow cylinder, an inner wall of which is provided with a plurality of shaping tools;
- a first gear which is fixedly connected to said hollow cylinder arranged in said first cavity which is internally in rotational engagement with rotating shafts which extend towards two ends and are up and down symmetrical,
- wherein an extending tail end of one end of said rotating shaft penetrates through said second cavity and into said third cavity and the tail end of said rotating shaft is provided with a first pulley,
- wherein a first belt is in power connection between two said first pulleys;
- wherein an extending tail end of the other end of said rotating shaft penetrates through an inner wall of one end of said second guide chute and a controlling threaded rod extending towards two ends is fixedly connected to a tail end of said rotating shaft,
- wherein an extending tail end of one end of said controlling threaded rod is in rotational engagement with the inner wall of said second guide chute;
- a second gear which is used for engaging with said first gear arranged on said rotating shaft, a cam which is located in said second cavity arranged on said rotating shaft,
- wherein a third guide chute is communicated between said second cavity and said cutting cavity,
- wherein said third guide chute is internally in sliding fit connection with a cutting tool, one end of which, close to said second cavity, extends into said second cavity and is in power connection with said cam;
- an elastic recovery device arranged on one end of said cutting tool;
- cyclic material-feeding devices, used for being in power connection with said controlling threaded rods, respectively disposed in said material cavity, said first guide chutes and said second guide chute,
- a dust extracting device arranged on one end face of said machine body;
- wherein round bars to be machined are placed into the cyclic dragging ring, and an impeller is started to push fourth guide sliders to move towards each other, and the fourth guide sliders make an arc clamp and an slide clamp simultaneously clamp the round bars tightly, and at this time, one tail end of the round bar extends into the hollow cylinder.