CN106392859A

CN106392859A - Multi-surface polishing process

Info

Publication number: CN106392859A
Application number: CN201611119997.8A
Authority: CN
Inventors: 杨佳葳; 周斌; 邱宇俊
Original assignee: Yujing Machine (changsha) Co Ltd
Current assignee: HUNAN YUJING MACHINE INDUSTRIAL Co.,Ltd.
Priority date: 2016-12-08
Filing date: 2016-12-08
Publication date: 2017-02-15
Anticipated expiration: 2036-12-08
Also published as: CN106392859B

Abstract

The invention discloses a multi-surface polishing process. The multi-surface polishing process is characterized in that after being superposed orderly in the same direction, to-be-polished workpieces are clamped on processing positions through an air cylinder; a processing surface is horizontally arranged; a workpiece rotary shaft is on the horizontal plane, is parallel to the central shaft of a polishing wheel, and is positioned below the polishing wheel; a grinding liquid pump is started, so that grinding liquid is sprayed onto the processing surface; motion track of the polishing wheel is calculated through a programming controller; when the polishing wheel automatically rotates, the polishing wheel and the tangent points of the workpieces move at constant speed at the peripheries of the workpieces; the polishing wheel and the grinding liquid act with each other, so that the peripheries of the workpieces are polished; and a stack of workpieces is polished by only needing to stop once, so that polishing efficiency is greatly improved. The multi-surface polishing process is suitable for multi-surface polishing for peripheries of a middle frame and a back shell of an electronic consumable mobile phone metal structural part, so that polishing efficiency is high, and polishing effect is good.

Description

A kind of multi-surface glossing

Technical field

The present invention relates to a kind of multi-surface glossing.

Background technology

For existing glossing, due to also there is mechanical hand or artificial monolithic sanding and polishing, single face sanding and polishing Efficiency, yields are relatively low, the problems such as equipment cost, cost of labor are higher, thus can not preferably be applied to consumer electronicses handss The center of machine hardware, the surrounding multilist mirror polish of shell on the back, also cannot be applied to 2.5D glass, sapphire and other Firmly, the surrounding multilist mirror polish of crisp material.

Content of the invention

The technical problem to be solved is to beat for existing manipulator or artificial monolithic sanding and polishing, single face Grinding and polishing light efficiency, yields are relatively low, the higher problem of equipment cost, cost of labor, provide a kind of multi-surface glossing.

The technical solution adopted for the present invention to solve the technical problems is：A kind of multi-surface glossing, will polish Workpiece fold in the same direction neat after, with cylinder clamping in machining position, machined surface horizontal positioned, workpiece rotary shaft in the horizontal plane, with throwing Halo central shaft is parallel, and is in immediately below it, opens grinding fluid pump, so that grinding fluid is ejected on machined surface, by cyclelog Calculate the running orbit of buff wheel, buff wheel while rotation, at the uniform velocity move in workpiece surrounding by the point of contact of buff wheel and workpiece, The interaction of buff wheel and grinding fluid makes the surrounding of workpiece be polished, and the folded workpiece of polishing one only needs to shutdown and lays once, Polishing efficiency greatly improves.

Further, the computational methods of the running orbit of described buff wheel are：

The central axis central point of workpiece is O point, is rotated with central shaft for axle clockwise, the center of buff wheel during work Axle vertical centre point is P point, is rotated with central shaft for axle clockwise, width of the workpiece L1, Workpiece length L2, workpiece circular arc during work Radius R1 and buff wheel radius R2 is known design parameter, and during operation, buff wheel moves up and down in OP line direction, its movement Distance is relevant with the rotational angle of workpiece, after calculating, accurately adjusts the displacement of buff wheel by program with servomotor, Thus reach control requiring, particular content is：

When workpiece turns to long edge polishing angle, set the buff wheel and workpiece point of contact translational speed in the edge of work V, while startup optimization, starts timer, from A point to B point apart from AB=VT, tang α=AB/ (R2+L1/2), obtains angle Degree α after can be obtained by workpiece real-time angular velocity while, buff wheel midpoint P is to workpiece midpoint O apart from OP=(R2+ L1/2)/cos α, thus just can show that buff wheel needs the distance rising in real time；

When rotational angle has arrived point of contact and is in arc chord angle, computing formula has change, arc length BC=VT, β=(arc length BC/2 π R1) * 360, PQ=R1+R2, in right angled triangle PQE, cos β=QE/PQ, therefore QE length can be calculated, in right angle trigonometry In shape ODQ, OD=L1/2-R1, QD=L2/2-R1=EF, OF=OD+DF=OD+QE, PE=PQ*sin β, PF=PE+QD, In right angled triangle POF, tang α=PF/OF, after obtaining angle [alpha], OP=PF/sin α, thus draw OP length, pass through Servomotor is accurately positioned.

Compared with prior art, the present invention has advantages below：

1. be suitable for the center of consumer electronicses mobile phone hardware, in the surrounding multilist mirror polish of shell on the back application surrounding Many mirror polish.

2. buff wheel is close to workpiece in running all the time and runs so as to be in suitable pressure with the relative motion of workpiece The point of contact of power state, buff wheel and workpiece is at the uniform velocity moved in workpiece surrounding, to reach optimal polishing efficiency and effect.

3. grinding fluid when polishing is sprayed from top to bottom, and horizontal positioned workpiece can make grinding fluid uniformly be sprayed on machined surface, improves Polishing efficiency and quality.

Brief description

Fig. 1 workpiece is in horizontal level schematic diagram；

Fig. 2 workpiece is in mill long side position；

Fig. 3 workpiece is in mill arc position.

Specific embodiment

Below in conjunction with drawings and Examples, the invention will be further described.

Embodiment

A kind of multi-surface glossing, after the workpiece that will polish is folded neatly in the same direction, with cylinder clamping in machining position, processes Face horizontal positioned, workpiece rotary shaft is in the horizontal plane, parallel with buff wheel central shaft, and is in immediately below it, opens grinding fluid pump, So that grinding fluid is ejected on machined surface, calculate the running orbit of buff wheel by cyclelog, buff wheel, while rotation, is thrown The point of contact of halo and workpiece is at the uniform velocity moved in workpiece surrounding, and the interaction of buff wheel and grinding fluid makes the surrounding of workpiece be thrown Light, the folded workpiece of polishing one only needs to shutdown and lays once, and polishing efficiency greatly improves.

The computational methods of the running orbit of described buff wheel are：

With reference to Fig. 1, the central axis central point of workpiece is O point, is rotated with central shaft for axle clockwise during work, polishing The central axis central point of wheel is P point, is rotated with central shaft for axle clockwise, in figure, width of the workpiece L1, workpiece are long during work Degree L2, Workpiece's Arc Radius R1 and buff wheel radius R2 are known design parameters, and during operation, buff wheel is on OP line direction Lower movement, its displacement is relevant with the rotational angle of workpiece, after calculating by program, accurately adjusts polishing with servomotor The displacement of wheel, thus reach control require.

As shown in Fig. 2 when workpiece turns to long edge polishing angle, setting buff wheel and workpiece point of contact in the edge of work Translational speed V, while startup optimization, start timer, from A point to B point apart from AB=VT, tang α=AB/ (R2+ L1/2), can be obtained by after obtaining angle [alpha] workpiece real-time angular velocity while, buff wheel midpoint P is to workpiece midpoint O's Apart from OP=(R2+L1/2)/cos α, thus just can show that buff wheel needs the distance rising in real time.

As shown in figure 3, rotational angle has arrived point of contact when being in arc chord angle, computing formula has change, arc length BC=VT, β=(arc Long BC/2 π R1) * 360, PQ=R1+R2, in right angled triangle PQE, cos β=QE/PQ, therefore QE length can be calculated, In right angled triangle ODQ, OD=L1/2-R1, QD=L2/2-R1=EF, OF=OD+DF=OD+QE, PE=PQ*sin β, PF= PE+QD, in right angled triangle POF, tang α=PF/OF, after obtaining angle [alpha], OP=PF/sin α, thus draw OP length Degree, is accurately positioned by servomotor.

The machine implementing said method includes：Buff wheel and motor are arranged on lifting assembly, buff wheel axial direction water Safety fills, and lifting assembly is fixed on slide, drives buff wheel to move up and down by the screw mandrel being connected with lift servo motor, line Property slide rail be fixed on casing, casing has Workpiece clamping device, workpiece is folded neat, in workpiece centre axle and clamping device in the same direction Heart axle is parallel, workpiece lean on motor provide power around central shaft rotate, lifting assembly buff wheel can be driven to move up and down so as to It is close to workpiece, electric cabinet is fixed on rear side of casing, and button box is fixed on casing.

Claims

1. a kind of multi-surface glossing it is characterised in that：After the workpiece that will polish is folded neatly in the same direction, added with cylinder clamping Station, machined surface horizontal positioned, workpiece rotary shaft is in the horizontal plane, parallel with buff wheel central shaft, and is in immediately below it, beats Drive grinding fluid pump, so that grinding fluid is ejected on machined surface, calculate the running orbit of buff wheel by cyclelog, buff wheel is in rotation While, the point of contact of buff wheel and workpiece is at the uniform velocity moved in workpiece surrounding, and the interaction of buff wheel and grinding fluid makes workpiece Surrounding is polished, and the folded workpiece of polishing one only needs to shutdown and lays once, and polishing efficiency greatly improves.

2. multi-surface glossing according to claim 1 it is characterised in that：The calculating of the running orbit of described buff wheel Method is：

The central axis central point of workpiece is O point, is rotated with central shaft for axle clockwise during work, and the central shaft of buff wheel hangs down Straight central point is P point, is rotated with central shaft for axle clockwise, width of the workpiece L1, Workpiece length L2, Workpiece's Arc Radius during work R1 and buff wheel radius R2 is known design parameter, and during operation, buff wheel moves up and down in OP line direction, its displacement Relevant with the rotational angle of workpiece, the displacement of buff wheel after calculating, is accurately adjusted by program with servomotor, thus Reach control to require, particular content is：

When workpiece turns to long edge polishing angle, set buff wheel and workpiece point of contact in translational speed V of the edge of work, open While dynamic operation, start timer, from A point to B point apart from AB=VT, tang α=AB/ (R2+L1/2), obtain angle [alpha] Can be obtained by later workpiece real-time angular velocity while, buff wheel midpoint P is to workpiece midpoint O apart from OP=(R2+L1/ 2)/cos α, thus just can show that buff wheel needs the distance rising in real time；

When rotational angle has arrived point of contact and is in arc chord angle, computing formula has change, arc length BC=VT, β=(arc length BC/2 π R1) * 360, PQ=R1+R2, in right angled triangle PQE, cos β=QE/PQ, therefore QE length can be calculated, in right angled triangle In ODQ, OD=L1/2-R1, QD=L2/2-R1=EF, OF=OD+DF=OD+QE, PE=PQ*sin β, PF=PE+QD, straight In the triangle POF of angle, tang α=PF/OF, after obtaining angle [alpha], OP=PF/sin α, thus draw OP length, by watching Take motor to be accurately positioned.