DEVICE TO TRANSFORM RECTILINEAR ALTERNATING MOTION INTO INTERMITTENT ROTARY MOTION

• US 20080314172A1
• Filed: 06/09/2008
• Published: 12/25/2008
• Est. Priority Date: 06/19/2007
• Status: Active Grant

• Current Assignee: Gimatic SPA (Barnes Group Incorporated)
• Original Assignee: Gimatic SPA (Barnes Group Incorporated)
• Inventors: Maffeis, Giuseppe
• Granted Patent: US 8,132,485 B2
• Time in Patent Office: Days
• US Class Current: 74/21
• CPC Class Codes: B23Q 1/44 using particular mechanisms B23Q1/26 takes precedence
• CPC Class Codes: B23Q 1/50 with rotating pairs only , the rotating pairs being the first two elements of the mechanism
• CPC Class Codes: B23Q 16/065 with a continuous drive
• CPC Class Codes: F16H 25/14 with reciprocation perpendicular to the axis of rotation crank or eccentric gearings without swinging connecting-rod F16H21/36
• CPC Class Codes: Y10T 408/54 Means to intermittently advance work
• CPC Class Codes: Y10T 74/14 Rotary member or shaft indexing, e.g., tool or work turret
• CPC Class Codes: Y10T 74/1424 Sequential
• CPC Class Codes: Y10T 74/1531 Multiple acting
• CPC Class Codes: Y10T 74/18016 Oscillating to reciprocating and intermittent rotary

Abstract

The invention concerns a device for transforming alternating rectilinear motion into intermittent rotary motion, in particular for the command of indexed rotary tables. It comprises at least one fixed base element (11) with cam guide means (14), a moving slide element (12) associated with the fixed element, equipped with mechanical locator means (15) following said cam guide means (14) and susceptible to alternating movements on and with respect to said fixed base element commanded by an actuator, and an index plate (13) rotatably associated with the fixed element, interacting mechanically with the moving slide element (12) and susceptible to angular rotation pitch in answer to the alternating movements of said moving slide element. The index plate is connected to an indexed rotary table to be commanded.

Claims

1. Device for transforming alternating rectilinear motion into intermittent rotary motion, in particular for the command of indexed rotary tables, comprising at least one fixed base element (11) with a face having cam guide means (14), a moving slide element (12) associated with said face of the fixed element, equipped with mechanical locator means (15) following said cam guide means (14) and susceptible to alternating movements on and with respect to said fixed base element, and an index plate (13) rotatably associated with said fixed base element, interacting mechanically with the moving slide element (12) and susceptible to angular rotation pitch in answer to the alternating movements of said moving slide element, said index plate being connected to an indexed rotary table to be commanded.

2. Device according to claim 1, wherein the moving slide element (12) has two recesses (17) facing and opening towards an intermediate window, and wherein the index plate (13) has a number of drag elements (18) angularly spaced, engaging one at a time with one of said recesses (17) to cause the index plate to rotate due to the movements of the moving slide element (12).

3. Device according to claims 1, wherein the cam guide means (14) of the fixed base element (11) are in the shape of endless grooving, and wherein the locator mean (15) of the moving slide element are compelled to follow said cam guide means.

4. Device according to claim 2, wherein the drag means (18) of the index plate (13) are made up of pegs.

5. Device according to claim 2, wherein the drag means (18) of the index plate (13) are made up of rollers or bearings.

6. Device according to claim 3, wherein the mechanical locators (15) of the moving slide element (12) are made up of pegs.

7. Device according to claim 3, wherein the locator means (15) of the moving slide element (12) are made up of rollers or bearings.

8. Device according to claim 1, wherein the moving slide element is connected to a pneumatic, mechanical, electromechanical actuator or similar to cause its alternating moves corresponding to the intermittent rotations of the index plate.

9. Device according to claim 1, wherein the moving slide element is positioned and constrained between two superimposed fixed elements.