Bearing inner hole groove machining equipment

Abstract

This invention discloses a bearing inner hole groove machining device, including: a frame; a middle die, an upper punch, a lower punch, an upper mandrel, a first drive mechanism, a second drive mechanism, a third drive mechanism, and a control unit. It utilizes an upper mandrel with specific patterns (convex stripes or grooves) as an inner die, forming a closed forming cavity with the outer peripheral forming hole of the middle die. The upper and lower punches apply precise axial extrusion force to the upper and lower end faces of the bearing, forcing the bearing metal material to undergo radial plastic flow, thereby imprinting clear grooves corresponding to the patterns on the upper mandrel on the inner hole wall. This fundamentally avoids the space limitation problem of cutting or etching within tiny cavities.

Claims

1. A bearing inner bore groove machining equipment, comprising: One rack; A middle die, fixedly mounted on the frame, has an outer circumferential shaping hole; an upper punch, located above the middle die, has a first clearance hole extending vertically through it; a lower punch, located below the middle die, has a second clearance hole extending vertically through it; an upper mandrel, positioned above the upper punch, has a raised strip or groove on its outer circumferential surface for forming grooves, and is movably inserted vertically through the first clearance hole of the upper punch, the inner hole of a bearing, and the second clearance hole of the lower punch; a first drive mechanism connected to the upper punch for driving the upper punch to move vertically; a second drive mechanism connected to the upper mandrel for driving the upper mandrel to move vertically independently relative to the upper punch; a third drive mechanism connected to the lower punch for driving the lower punch to move vertically; and... A control unit is electrically connected to the first drive mechanism, the second drive mechanism and the third drive mechanism, and is used to control each drive mechanism to operate according to a predetermined program.

2. The bearing inner bore groove machining equipment as described in claim 1, wherein, It also includes a feeding mechanism disposed on the side of the intermediate mold, the feeding mechanism comprising: a guide rail for conveying the bearing to a preparatory position close to the intermediate mold; an automatic adjustment block disposed at the output end of the guide rail, the automatic adjustment block having a contour groove adapted to the outer periphery of the bearing; an adjustment pneumatic cylinder connected to the automatic adjustment block for driving the automatic adjustment block to move along the extension direction of the guide rail to adjust the position of the bearing; and a unloading robot for gripping the adjusted bearing and placing it on the lower punch above the outer periphery shaping hole of the intermediate mold.

3. The bearing inner bore groove machining equipment as described in claim 2, wherein, The unloading robot includes: an automatic unloading clamp for holding the bearing; an unloading pneumatic cylinder connected to the automatic unloading clamp for driving the automatic unloading clamp to move along the extension direction of the guide rail; and an unloading motor connected to the unloading pneumatic cylinder for driving the unloading pneumatic cylinder and the automatic unloading clamp to move in a direction perpendicular to the extension direction of the guide rail.

4. The bearing inner bore groove machining equipment as described in claim 1, wherein, It also includes a discharge mechanism disposed on one side of the middle mold. The discharge mechanism includes: a pusher block that can be horizontally reciprocated; a pusher pneumatic cylinder connected to the pusher block for driving the pusher block to move; and a receiving groove disposed on the middle mold and opposite to the pusher block for receiving the bearing pushed out by the pusher block and guiding it to slide out.

5. The bearing inner bore groove machining equipment as described in claim 1, wherein, The first drive mechanism includes: a first servo motor; a first screw connected to the output shaft of the first servo motor via a first coupling; a first connecting plate threadedly engaged with the first screw; and the upper punch mounted on the first connecting plate via a first upper mold base fixing plate and a second upper mold base fixing plate.

6. The bearing inner bore groove machining equipment as described in claim 5, wherein, The second drive mechanism includes: a second servo motor mounted on the first connecting plate; a second screw connected to the output shaft of the second servo motor via a second coupling; a second connecting plate threadedly engaged with the second screw; and an upper mandrel mounting plate connected to the second connecting plate, wherein the upper mandrel is mounted on the upper mandrel mounting plate.

7. The bearing inner bore groove machining equipment as described in claim 1, wherein, The third drive mechanism includes: a third servo motor; a third screw connected to the output shaft of the third servo motor via a third coupling; a third connecting plate threadedly engaged with the third screw; and a lower die holder fixing plate connected to the third connecting plate, with the lower punch mounted on the lower die holder fixing plate.

8. The bearing inner bore groove machining equipment as described in claim 1, wherein, The lower end face of the upper punch and / or the lower end face of the lower punch is provided with an exhaust groove.

9. The bearing inner bore groove machining equipment as described in claim 1, wherein, The intermediate mold is equipped with a heating unit for heating it, and a heat insulation plate is provided on the outer periphery of the intermediate mold. Furthermore, a cooling unit is arranged on an intermediate mold base of the intermediate mold, and the cooling unit is isolated between the intermediate mold and a vertical guide post on the intermediate mold base.

10. The bearing inner bore groove machining equipment as described in claim 1, wherein, The upper end of the outer peripheral shaping hole of the intermediate mold is designed with an upwardly expanding conical slope.

Images