CN2292013Y

CN2292013Y - Adjustable cam controller

Info

Publication number: CN2292013Y
Application number: CN 97236076
Authority: CN
Inventors: 沈岳乔; 肖建忠
Original assignee: ZHENHUA MACHINE FACTORY WUXI CITY JIANGSU PROV
Current assignee: ZHENHUA MACHINE FACTORY WUXI CITY JIANGSU PROV
Priority date: 1997-05-16
Filing date: 1997-05-16
Publication date: 1998-09-23
Anticipated expiration: 2007-05-16

Abstract

The utility model relates to an adjustable cam controller, which is used for pressing machines. The utility model belongs to control devices on the pressing machines. The utility model is characterized in that both ends of a main shaft in a turning component are supported by a bearing on the coaxial hole of the pedestal of a housing component; a cam set is arranged on the main shaft; each set of cam corresponds to a microswitch which is arranged on the bottom board of the housing component via the support frame of a switch and a switch base. The cam of the utility model has large adjustable range of work angle, high repeating precision, and accurate, convenient and reliable adjustment. Each angle scale line on the cam adopts ' red 'and ' black ' different scale values to label, and thus the work angle of the cam can be open-and-shut; due to the adoption of the lever-type microswitch, the utility model has simple structure, convenient maintenance and long service life.

Description

The adjustable type cam controller

A kind of adjustable type cam controller is used for forcing press, belongs to the forcing press upper controller.

Before the utility model was made, in prior art, the control device that is used on the forcing press mainly was made up of housing, steel camshaft, slide-bar drive disk assembly, microswitch.This control device complex structure, the manufacturing cost height when particularly carrying out the adjustment of cam work angle, owing to circumferentially there be not reliable the location between two cams of every group of cam, is difficult to adjust desirable operating angle.

The purpose of this utility model is to overcome above-mentioned weak point, thereby provides a kind of simple in structure, and low cost of manufacture, cam work angle adopt end face tooth calibration to adjust, and make accurate, the convenient and reliable adjustable type cam controller of operating angle adjustment.

The utility model is mainly by housing parts, turning cam spindle unit, and lever roller moving switch block three parts that decline are formed.Main shaft in the turning cam spindle unit (13) two ends adopt bearing to be bearing on the coaxial aperture of housing parts (4) base both sides, main shaft (13) is gone up cam set is installed, every group of corresponding customization microswitch of cam, microswitch is installed on the base plate of housing parts (4) by switch bracket (15) and switch base (16).

Description of drawings:

Fig. 1 is the utility model structural front view.

Fig. 2 is the utility model structure vertical view.

Fig. 3 is the utility model structure side view.

Fig. 4 is the utility model cam gear structure chart.

Fig. 5 is the utility model cam curve structure chart.

Embodiment during following the utility model is incited somebody to action in conjunction with the accompanying drawings is further described:

The utility model is mainly by housing parts, and turning cam spindle unit, lever roller decline and move switch three parts composition.Housing parts (4) is mainly by " U " type base, and the hinge duckbilled hasp of front and rear covers (17), (18) and connection usefulness is formed.Throw off hasp, front and rear covers (17), (18) can be split around hinge, so that adjust cam work angle, changing-over microswitch and lead-in wire.Main shaft in the turning cam device (13) is bearing on the rotary hole of housing parts (4) " U " type base both sides by the both ends of the surface ball bearing, this supporting structure is more easily realized bearings at both ends centre of gyration unanimity, what of required control signal main shaft (13) gone up according to, and the cam set that different groups are installed is formed the axial location that a series is assemblied in each cam set on the camshaft and determined by packing ring (5), back-up ring (6), positioning sleeve (12) and check ring, butterfly spring.Cam set is mainly by fixed gear ring (9), and cam (8), external cam (7) and axial compression are adjusted spring (10), (11) are formed.Fixed gear ring (9) is fixed on the main shaft (13), cam (8) is by end face tooth and fixed gear ring (9) engagement, and external cam (7) is by end face tooth and cam (8) engagement, spring (10), (11) guarantee that then the engagement of end face tooth is reliable, and easily realize throwing off adjusting.Cam curve on middle external cam (8), (7) is identical symmetrical plane curve, and two sections tangent lines of AA ', BB ' and two sections lines of AC, BD of mainly containing on R1, R2 two ends garden arc and the R1 garden arc are formed.2 of A, B are the signal switching point, Be the normally-closed contact active section,

Be the normally opened contact active section, in order to reduce the wearing and tearing between cam work surface and the microswitch roller, the cam work lift is designed to about 4mm, greater than microswitch work lift 3mm, make under the normally off, the microswitch roller does not contact with the cam work surface, reliable, steady in order to guarantee that signal switches, when the design work curve, increase by two sections auxiliary lifting curve AC, BD, when this cam curve also satisfies maximum speed (165rmin) simultaneously, the speed limit requirement of microswitch push rod.In on the external cam (8), (7) corresponding cam each operating angle mark " red " respectively and " deceive " two kinds of scales so that adjust one group of cam normally closed or often open two kinds of operating angle scopes under the duty.

The adjustment of cam work angle: (1) operating angle is greater than 180 ° adjustment.The adjustment of a, work range starting point; Axially pull cam bit, cam (8) calibration end face tooth is taken off move the position of engagement, rotating cam, opening angle as required makes cam (8) go up corresponding " deceiving " word scale secured in alignment gear (9) " 0 " directrix.The adjustment of b, work range stop: axially pull external cam (7), the cam face tooth is taken off move the position of engagement, rotate external cam (7), closing angle on demand makes corresponding " deceiving " word scale secured in alignment gear ring " 0 " directrix on the external cam.Adjustment when 2, operating angle is less than 180 °.Start-stop angle as required, " red " word scale secured in alignment gear ring " 0 " directrix of correspondence in making respectively, on the external cam.

Every group of corresponding microswitch of cam, microswitch support (15) and switch base (16) are installed on the base plate of housing (4), and its upper roller relatively rotates with corresponding cam work surface, and rotates around balance pivot, contact is passed in motion, realized the signal break-make.Protective cover (14) is housed above switch block, when adjusting the cam work angle, plays the safeguard protection effect.In housing parts (4) casing outside, calibration loop (2) is fixed on main shaft (13) by key and goes up and cam main shaft (13) run-in synchronism, shows operating angle, and case (1), packing ring (3) are fixed on the cartridge housing, and calibration loop and driving shaft input are shielded.

Compared with the prior art the utility model has the following advantages: 1, cam work angle adjustable extent exists 10-360 °, repeatable accuracy is ± 1.5 °; 2, the cam work angle adopts the adjustment of end-tooth calibration, Make the operating angle adjustment accurately, conveniently, reliably: 3, each angle groove employing " red " on the cam, " deceive " two kinds of different scale value marks, " deceiving " word scale is used for signal element normally opened contact duty, " red " word scale is used for the normally-closed contact duty, makes the cam work angle very clear; 4, housing Parts adopt stamping parts, and cam gear adopts moulding, has not only reduced production cost, and easily formation is criticized Amount is produced; 5, because employing lever microswitch is simple in structure, easy to maintenance, long service life; 6, less demanding to environment for use, can be widely used in forging and pressing, to smelt, pack, the industries such as shipbuilding need Carry out programme controlled equipment.

Claims

1, a kind of adjustable type cam controller comprises housing parts, the turning cam spindle unit, the lever roller moving switch block that declines, it is characterized in that main shaft in the turning cam spindle unit (13) two ends employing bearing is bearing on the coaxial aperture of housing parts (4) base both sides, main shaft (13) is gone up cam set is installed, every group of corresponding microswitch of cam, microswitch is installed on the base plate of housing parts (4) by switch bracket and switch base (16).

2, adjustable type cam controller according to claim 1, it is characterized in that described cam set comprises fixed gear ring (9), cam (8), external cam (7), spring (10), (11), fixed gear ring (9) is fixed on the main shaft (13), cam (8) is by end face tooth and fixed gear (9) engagement, and external cam (7) is by end face tooth and cam (8) engagement.

3, adjustable type cam controller according to claim 1 is characterized in that the cam curve on described middle external cam (8), (7) is identical symmetrical plane curve.