Loading device for a plunge cut grinding machine for centerless external cylindrical grinding and method for centerless external cylindrical grinding

Patent metadata

Field	Value
Publication number	US-11701745-B2
Application number	US-201816476314-A
Country	US
Kind code	B2
Filing date	Feb 27, 2018
Priority date	Mar 8, 2017
Publication date	Jul 18, 2023
Grant date	Jul 18, 2023

Abstract

A loading device for a plunge-cut grinding machine for centerless external cylindrical grinding includes a receiving frame, a support body, and a displacement actuator. The receiving frame is open in a gravitational direction and is for receiving a blank workpiece to be machined. The support body forms a support base for the blank workpiece. The displacement actuator is for axially displacing the receiving frame relative to the support body and into a grinding gap of the plunge-cut grinding machine. The receiving frame includes a conveying stop on an axially facing end face. The conveying stop is for axially expelling a final workpiece arranged in the grinding gap.

First claim

The invention claimed is:

1. A loading device for a plunge-cut grinding machine for centerless external cylindrical grinding, comprising
a receiving frame, open in a gravitational direction, for receiving a blank workpiece to be machined;
a support body forming a support base for the blank workpiece; and
a displacement actuator for axially displacing the receiving frame relative to the support body and into a grinding gap of the plunge-cut grinding machine, wherein:
the receiving frame comprises:
a conveying stop on an axially facing end face;
a positioning stop for axial abutment against an axial side of the blank workpiece that is facing away from the support body; and
a flap on an axial side facing toward the grinding gap that comprises the positioning stop on an axial side facing away from the grinding gap; and

the conveying stop is for axially expelling a final workpiece arranged in the grinding gap.

2. The loading device of claim 1 , wherein the support body comprises an end-face axial stop, facing toward the grinding gap, for axially positioning the blank workpiece in the grinding gap.

3. The loading device of claim 1 , wherein the flap is attached:
pivotably about an axis substantially perpendicular to an axial axis of the blank workpiece; and
above the blank workpiece or above an upper margin portion of the receiving frame in the gravitational direction.

4. The loading device of claim 1 , wherein the flap:
forms the conveying stop on the axial side facing toward the grinding gap; and
is buttable against the receiving frame on the axial side facing away from the grinding gap.

5. The loading device of claim 1 wherein the flap is spring-loaded.

6. The loading device of claim 1 , wherein the receiving frame is configured for:
loading the blank workpiece into the grinding gap; and
simultaneously removing the final workpiece from the grinding gap.

7. The loading device of claim 6 , wherein:
a conveying element adjoins the grinding gap in an axial direction facing away from the support body; and
the conveying element is designed as a ramp for a gravity-assisted conveyance of the final workpiece away from the grinding gap.

8. A method for centerless external cylindrical grinding comprising:
providing the loading device of claim 6 ;
inserting a first blank workpiece into the receiving frame and depositing the first blank workpiece on the support body;
axially moving the receiving frame away from the support body;
conveying a first final workpiece, positioned in the grinding gap of the plunge-cut grinding machine, axially and out of the grinding gap;
depositing the first blank workpiece into the grinding gap by gravity;
axially moving the receiving frame onto the support body; and
inserting a second blank workpiece into the receiving frame and depositing the second blank workpiece on the support body while the first blank workpiece is machined to produce a second final workpiece.

9. The method of claim 8 further comprising axially pushing the first blank workpiece against the support body with the receiving frame during the step of axially moving the receiving frame onto the support body.

10. A loading device for a plunge-cut grinding machine for centerless external cylindrical grinding, comprising:
a receiving frame, open in a gravitational direction, for receiving a blank workpiece to be machined;
a support body forming a support base for the blank workpiece; and
a displacement actuator for axially displacing the receiving frame relative to the support body and into a grinding gap of the plunge-cut grinding machine, wherein:
the receiving frame comprises a conveying stop on an axially facing end face, the receiving frame is configured for:
loading the blank workpiece into the grinding gap; and
simultaneously removing a final workpiece from the grinding gap; and

the conveying stop is for axially expelling the final workpiece arranged in the grinding gap.

11. The loading device of claim 10 , wherein:
a conveying element adjoins the grinding gap in an axial direction facing away from the support body; and
the conveying element is designed as a ramp for a gravity-assisted conveyance of the final workpiece away from the grinding gap.

12. A method for centerless external cylindrical grinding comprising:
providing a loading device having a receiving frame open in a gravitational direction;
inserting a first blank workpiece into the receiving frame and depositing the first blank workpiece on a support body;
axially moving, via a displacement actuator, the receiving frame away from the support body and into a grinding gap of a plunge-cut grinding machine;
conveying a first final workpiece, positioned in the grinding gap of the plunge-cut grinding machine, axially and out of the grinding gap;
depositing the first blank workpiece into the grinding gap by gravity;
axially moving the receiving frame onto the support body; and
inserting a further blank workpiece into the receiving frame and depositing the further blank workpiece on the support body while the first blank workpiece is machined to produce a further final workpiece;
wherein the receiving frame includes a conveying stop on an axially facing end face, the conveying stop is configured for axially expelling the further final workpiece arranged in the grinding gap;
wherein the receiving frame is configured for:
loading the first blank workpiece into the grinding gap; and
simultaneously removing the first final workpiece from the grinding gap;
wherein the support body forms a support base for the first blank workpiece.

13. The method of claim 12 , further comprising axially pushing the blank workpiece against the support body with the receiving frame during the step of axially moving the receiving frame onto the support body.

Assignees

• Schaeffler Technologies Ag

Inventors

• Seubold Daniel

Classifications

• B23Q7/006 Primary

  Ejectors · CPC title

• B23Q7/06

  by means of pushers {(B23Q7/1457, B23Q7/1489, B23B13/02, B23B13/12 take precedence)} · CPC title

• B24B5/18

  involving centreless means for supporting, guiding, floating or rotating work (centreless turning B23B5/08; centreless grinding of threads B23G1/42) · CPC title

• B24B5/355 Primary

  Feeding means · CPC title