Workpiece orientation mechanism

Patent metadata

Field	Value
Publication number	US-12134159-B2
Application number	US-202117305015-A
Country	US
Kind code	B2
Filing date	Jun 29, 2021
Priority date	Feb 3, 2021
Publication date	Nov 5, 2024
Grant date	Nov 5, 2024

Abstract

A workpiece orientation mechanism includes: a driving device including a transmission motor and a controller which are connected with each other via signal, the transmission motor defining an axial direction; a rotating seat, combined with the transmission motor, and capable of being driven to rotate by the transmission motor; an orientation head disposed on the rotating seat to rotate synchronously with the rotating seat, wherein the orientation head is capable of moving along the axial direction relative to the rotating seat, one end of the orientation head includes a mounting head, and a blocking member is disposed on the orientation head; reset means, arranged between the rotating seat and the orientation head, and positioning the orientation head at a predetermined position; and a sensor facing the blocking member, wherein the sensor is signally connected with the controller.

First claim

What is claimed is:

1. A workpiece orientation mechanism comprising:
a driving device including a transmission motor and a controller which are connected with each other via signal, the transmission motor defining an axial direction;
a rotating seat, combined with the transmission motor, and capable of being driven to rotate by the transmission motor;
an orientation head disposed on the rotating seat to rotate synchronously with the rotating seat, wherein the orientation head is capable of moving along the axial direction relative to the rotating seat, one end of the orientation head includes a mounting head, and a blocking member is disposed on the orientation head;
reset means, arranged between the rotating seat and the orientation head, and positioning the orientation head at a predetermined position; and
a sensor facing the blocking member, wherein the sensor is signally connected with the controller;
wherein the transmission motor includes a rotating shaft;
the rotating seat includes a penetrating hole, the rotating shaft is inserted through and locked in the penetrating hole, the rotating seat includes an elastic member fixing portion, the reset means is an elastic member, and one end of the elastic member is fixed to the elastic member fixing portion;
the orientation head includes a locking portion, a blocking member coupling portion, and an elastic member receiving portion, the locking portion is a columnar body and extends along the axial direction, two ends of the locking portion along the axial direction are respectively a first end and a second end, the first end is provided with the mounting head, the elastic member receiving portion is located at the second end, another end of the elastic member is fixed to the elastic member receiving portion, the blocking member is disposed on the blocking-member inductor coupling portion;
the sensor includes a sensing unit that faces the blocking member, and the sensing unit is signally connected to the controller;
wherein, when a workpiece abuts the mounting head to move the orientation head and the blocking member along the axial direction, the sensor transmits a driving signal to the controller to drive the transmission motor, and the transmission motor drives the rotating seat, the orientation head, and the blocking member to rotate by a rotation angle, so that the mounting head engages the workpiece, meanwhile, the reset means causes the orientation head and the blocking member to return along the axial direction, and makes the sensor send the driving signal to the controller to stop the transmission motor, and the transmission motor sends a feedback parameter to the controller to obtain the rotation angle, and the controller calculates a compensation angle based on the rotation angle and a predetermined angle, and then drives the transmission motor to rotate by the compensation angle.

2. The workpiece orientation mechanism as claimed in claim 1 , wherein the controller includes an absolute encoder.

3. The workpiece orientation mechanism as claimed in claim 1 , wherein the transmission motor is mounted on a motor fixing base, the rotating seat includes a first sleeve and a first orientation member;
the first sleeve is sleeved on the rotating shaft, the penetrating hole penetrates the first sleeve, the first sleeve includes a first side surface facing away from the motor fixing base, the first side surface includes a flange, the elastic member fixing portion is a first accommodating groove defined by the flange, the first accommodating groove communicates with the penetrating hole, and a diameter of the first accommodating groove is larger than that of the penetrating hole, thereby forming an annular step surface at a junction between the first accommodating groove and the penetrating hole for one end of the elastic member to abut against;
the first orientation member includes a body disposed on the first side surface and coaxially arranged with the first sleeve, the body includes an elastic member accommodating hole penetrating the body along the axial direction, the elastic member is disposed in the elastic member accommodating hole, two through holes are respectively formed at two ends of the body in the axial direction and communicate with the elastic member accommodating hole, the locking portion extends out of the through holes and protrudes from the first orientation member, two openings are respectively formed at two radial ends of the body and communicate with the elastic member accommodating hole;
the orientation head further includes a sliding portion formed at the second end of the locking portion, the sliding portion is disposed in the elastic member accommodating hole, the blocking-member coupling portion is two protrusions at two opposite sides of the sliding portion, the two protrusions are located on a radial extension line of the locking portion and respectively protrude from the openings, the sliding portion includes a front side surface and a rear side surface facing away from the front side surface, the front side surface is connected to the second end, the elastic member receiving portion is a second accommodating groove located on the rear side surface, and another end of the elastic member is abutted against the second accommodating groove;
the blocking member is an annular plate sleeved on the first orientation member and disposed on the two protrusions;
the driving device further includes a supporting plate which is locked to the motor fixing base, and the sensor is disposed on the supporting plate.

4. The workpiece orientation mechanism as claimed in claim 3 , wherein the supporting plate includes a first plate section, a second plate section, and a third plate section which are connected to each other in sequence, a first angle is formed between the first plate section and the second plate section, a second angle is formed between the second plate section and the third plate section, the first plate section is fixed to the motor fixing base, the third plate section faces the sensing element, and the sensor is combined with the third plate section.

5. The workpiece orientation mechanism as claimed in claim 3 , wherein the elastic member accommodating hole includes two opposite inner surfaces which are flat surfaces, the sliding portion includes a top fixing side portion and a bottom fixing side portion on opposite sides thereof, the top fixing side portion and the bottom fixing side portion are flat surfaces, and respectively abut against the corresponding inner surfaces.

6. The workpiece orientation mechanism as claimed in claim 3 , wherein the controller includes an incremental encoder, and further includes an angle sensor unit, the angle sensor unit includes an angle sensor and an angle sensing member, the angle sensor is disposed on the supporting plate, the angle sensor is signally connected to the controller, and includes alight projecting unit and a light receiving unit, the light projecting unit and the light receiving unit are separated by a distance to form a shielding space, the angle sensing member is disposed between the first sleeve and the first orientation member, and is able to rotate with the rotating seat.

7. The workpiece orientation mechanism as claimed in claim 6 , wherein the supporting plate includes a first plate section, a second plate section, and a third plate section which are connected to each other in sequence, a first angle is formed between the first plate section and the second plate section, a second angle is formed between the second plate section and the third plate section, respectively, the angle sensor is disposed on the second plate section, the first sleeve is recessed with a receiving groove on the first side surface, and the angle sensing member is locked

Assignees

• Hiwin Tech Corp

Inventors

• Hsieh Chen-Yu
• Su Jhao-Jhong
• Lin Bo-Chen
• Huang Kuo-Cheng

Classifications

• B26D3/08 Primary

  Making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising · CPC title

• G05B19/402

  characterised by control arrangements for positioning, e.g. centring a tool relative to a hole in the workpiece, additional detection means to correct position (G05B19/19 takes precedence) · CPC title

• B23Q17/2428

  for measuring existing positions of tools or workpieces · CPC title

• B23Q1/525

  which is parallel to the working surface · CPC title

• B23Q16/021

  in which only the positioning elements are of importance (B23Q16/04, B23Q16/08 take precedence) · CPC title