The technology that clamping apparatus makes is analysed

2mm and circumferential all of cloth narrow groovy treatment, had beneficial attempt, obtained better result. The basic over all dimension of this spare parts: 75mm of φ 48mm × , material is 45 steel character. One, the technology of cirque is analysed (1) form precision demand is higher; (2) the aperture photograph to end panel verticality requirement of 48 is φ 0.

02; (3) φ 16 with φ the coaxial of two aperture requirement of 27 is spent for 0.

025; (4) 12 chamfer photograph spends a requirement to the axes center of central axle 0.

02; (5) demand of fixed position dimension is higher; In 12 chamfer length of 6 aperture having a circle is 50mm, additional 6 length are 35mm, one long space leaves and ask to central circle all cloth, allow groove to go up widely deviation is 0.

02, next deviation are 0. The treatment requirement to notch is: Assure width 0.

The public errand of 2mm, length is 50mm and 35mm, exterior surface roughness is Ra3.

2 μ M, ask 12 chamfer are round to the center all cloth, to assure its precision asks, to this working procedure, no matter be the treatment of workpiece, still search to installing clip to have quite great difficulty, because this must undertake serious analysis, make corresponding treatment process. This workpiece machines craft with convention is: (1) delimit on workpiece above all 6 all the line of cloth, use naked eye next orthoptic underline to workpiece undertake machining. Search to underlining existence error with naked eye, cannot assure to machine quality, often produce waste product, cause very big loss to the enterprise. Its characteristic is to add man-hour to assure dimension public errand and form hard the consistency of tolerancepublic errand, and the accuracy of the position that hold clip, and treatment efficiency is too low, use this kind of technology average every one stage machine tool can cut 2-3 only. (2) if use dividing head to install clip treatment, considering the X of workbench of machine tool of DK7725e line cut that uses now the axis is mixed the biggest length has Y axis only 250mm, place because its volume is too large hard with machine tool jacket, in the meantime, level of technology of handlers of the requirement in whole treatment process is high, attentive height is centered, treatment link does not get wrong leakage. To the adjustment of the machine tool, of electric parameter choice, the application of the choice of cutting fluid dosage, and efficiency of big, production carries labor intensity not tall. Through analysing part drawing, reach a consideration technical demand is high, treatment batch is big, concern to maintain good cooperation with the enterprise, resolve difficulty for the enterprise, we try to design a practical and efficient, simple and easy, similar dividing head the clamping apparatus of type, will finish the treatment job of this product. 2, design of principle of clamping apparatus design is main the dimension precision of the main demand with line cut and this spare parts asks to consider: Can make sure the treatment of workpiece asks; Can improve labor productivity; Make simple, safeguard convenient; The clamping apparatus cost that make is inferior. This principle that covers clamping apparatus is simpler, it is benefit usage Lan Pantong one circumferential Kong Jiji establishs on 6 equational small blind board there is one roundlet Kong Zhong to have spring in same diameter, ball of a steel pulls on bedspring, the elastic force that uses spring (its bounce can adjust according to degree of tightness) , lan Panyi of every facing coming back second, steel ball just falls in alveolus, implementation rotates to locate quickly, as graduation rotating like dividing head. Of clamping apparatus stand board with flange dish close solid connection, assure circumgyrate precision. 3, the structure of clamping apparatus this clamping apparatus is main by stand board, flange dish with 3 claw the 3 large parts such as chuck are comprised. Its characteristic is can secure conveniently, assemble and unassemble workpiece, assure fast fixed position; Can rotate at will, accurately graduation, make sure 12 wires are even; And the size of this clamping apparatus just fits the bulk of workbench of machine tool of cut of our DK7725e line, use very convenient. 1.

Chuck 2.

Stand board 3.

Flange dish 4.

Steel ball 5.

Bedspring 6.

Adjust bolt 7.

Solid nut 8.

One-way thrust ball bearing 9 copper sliding sleeve 10.

Chuck bolt nextpage4, clamping apparatus makes reach assemble this clamping apparatus main characteristic is: Use steel ball bulgy part has fixed position, will control flange dish treatment of fast graduation fixed position. 1, chuck of ① of main element requirement: Use K1180 3 claw from centering chuck (have claw and turn over claw two kinds) , can use at installing to place different cirque or other axis kind workpiece. ② stands board: Use A3 steel material to make, this have bearing effect, motherboard and establish side panel two board connect an organic whole through soldering for 90 ° each other, its underside and other side are finished through treatment of milling, grinding, verticality should be achieved 0.

015-0.

02, exterior surface roughness achieves Ra1.

6m; 90mm of clamping apparatus centre height has a φ the aperture of 35, use fixed copper sliding sleeve its are filled with too cooperate clearance to want to achieve H7/P6, the aperture photograph to side panel verticality requirement of 35 is φ 0.

025, exterior surface roughness achieves Ra1.

6m, can use milling to finish. ③ flange dish: Material chooses 45 steel, 55 circles of this φ and φ arbor of 30 fixed position turning shapes, its coaxial spends an error to must be controlled strictly in 0.

In 025mm, reach control its circularity error. Flange dish the step of 55 length 3mm and chuck fits tolerance are front φ 0.

01-0.

02mm; Back end φ 30 it is slip component, need the temper after local heating quenchs, exterior hardness achieves HRC40-45, dimension achieves H7 requirement, exterior surface roughness is Ra1.

6m; In flange dish back end is with central axle fiducial, φ 47 circumferential on auger have 6 all cloth R3 is deep 1.

The fixed position aperture of 5, the whorl that passes nut and arbor is secured each other in stand board on, ask to hang down to be achieved continuously 0.

015. ④ steel ball: Choose ball of φ 6mm steel, have fixed position effect. ⑤ bedspring: Choose cylindrical helix compresses bedspring, bedspring silk diameter 0.

6mm of diameter of 8mm, outer lane, the structure that carry a department has and tighten abrasive YI model, in order to make sure the axis of bearing end panel and bedspring is vertical, do not send when bedspring press press thereby askew. ⑥ adjustment bolt: Choose M8 × the crop bolt of 1, use at adjusting the bounce of bedspring. ⑦ tightens solid nut: Choose M16 × 1 hex nut, have clamp effect. Ball bearing of ⑧ one-way thrust: Choose 8203 model scroll bearing (8224GB301-64) , have slip effect. ⑨ sliding sleeve: Material chooses brass, have slip effect, φ 35 with φ the aperture requirement coaxial of 30 is spent for 0.

02, can use turning to finish; φ the clearance fit of Lan Panxin axis should achieve the Kong Yufa of 30 0.

01-0.

02; So that flange circles,turn agile. ⑩ chuck bolt: Choose bolt of the 6 horn inside M6, have effect of close solid connection. 2, the treatment → that assembles process to complete clamping apparatus form on milling machine 3 claw from centering chuck and flange dish assemble → to stand board be filled with too with cupreous sliding sleeve assemble → to stand board debug with flexibility of steel ball position. The whirl for arbor precision, sliding sleeve inner ring and flange dish main shaft is assembled reach sliding sleeve outer lane and stand board when aperture is assembled, often use directional constructional method. Directional assembling is manual control radial of each assembly parts is jumpy the direction of the error, make the error offsets each other and not be to accumulate, assemble a kind of method of precision in order to rise. 1, the working process of clamping apparatus: (1) the installation of clamping apparatus and adjust a clamping apparatus to locate on workbench of online cut machine tool intermediate position, with dial gauge corrective stand board the X axis of datum plane and machine tool, Y axis is parallel and perpendicular, tighten clamping apparatus solid to be on workbench with screw. (2) in putting work 3 ungual chuck (use turn over claw) workpiece clamp, make the end panel of workpiece sticks close chuck flank. (3) before treatment, first need uses the fixed position in the cent of the function in be opposite automatically on the machine tool, after making molybdenum silk is located in the center of workpiece, can undertake by the program cut is machined. After when first treatment is over, the lock decides the coordinate value of axis of machine tool X, Y axis, need not search to be able to continueing to machine again later. (4) the treatment craft that presses this cirque, the groovy length that machines considering work place, appearance is abhorrent, criterion flange dish the job has two kinds of methods: It is machining a law one by one is to show every cut a line, flange dish the directional order roll that needs to press fixed position aperture is machined stage by stage, after this method cuts a line every time, need changes machine program to just can continue to machine. 2 it is to jump pace treatment method is to point to after should cutting the first line, flange dish should turn by directional order aperture of many fixed position (turn twice namely) just can press same process treatment, till this program is machined,be over. When after the first program is finished, wanting to process the 2nd order, usable and same jumping footwork continues to process the 2nd order. 2, clamping apparatus makes the technology issue that should note: (1) flange dish of arbor and sliding sleeve slip cooperate clearance its clearance must be controlled between H7/h6, and assure flange dish rotational and agile freely. If the space between arbor and sliding sleeve is too little, meeting occurrence flange dish rotational difficulty; If gap is too big, the radial and jumpy error of arbor is big, affect the precision demand that workpiece machines. (2) stand board steel ball locates Kong Yugang ball cooperates space size its clearance must be controlled in 0.

05-0.

In 1mm, in order to assure steel ball and bedspring adjustable and agile. (3) this clamping apparatus is a basis circumgyrate kind design of fixed position clamping apparatus, use stretch component fixed position, because this wants to control flange dish on 6 all the central pitch of cloth aperture and depth size should agree, reduce error of production fixed position. Cause a contact otherwise undesirable gap is too big, affect fixed position precision. 5, use effect 1, the procedure of this clamping apparatus that make is simple not complex, cost is inferior, develop the latent capacity of the machine tool adequately, achieve the goal with one multi-purpose machine. 2, cut treatment work through trying, make narrow the dimension precision after groove is machined reachs H8 level, exterior surface roughness is worth achieve Ra=1.

2 ～ 3.

2m, the linearity with wide chamfer is better also, examination hind accords with the dimension that blueprint asks completely, successive treatment does not have occurrence reject thousands of times, raise economic benefits for the enterprise. 3, after using this clamping apparatus, treatment efficiency rises quickly at the same time, show a class treatment of a machine tool is controlled 15 times, efficiency rises close fourfold much, reduced the labor intensity of handlers. This covers clamping apparatus to use more than one year, performance is very steady. CNC Milling CNC Machining