CN202498372U

CN202498372U - Square-box-type lathe clamp with double center distances

Info

Publication number: CN202498372U
Application number: CN2012200301217U
Authority: CN
Inventors: 吕兴民
Original assignee: BAOTOU JIALONG METAL PRODUCTS LLC
Current assignee: BAOTOU JIALONG METAL PRODUCTS LLC
Priority date: 2012-01-13
Filing date: 2012-01-13
Publication date: 2012-10-24
Anticipated expiration: 2022-01-13

Abstract

The utility model relates to a square-box-type lathe clamp with double center distances, comprising a square box body and a square box cover. The lathe clamp is characterized in that the square box body in a square cylinder shape is enclosed by four surfaces; one port of the square box body is equipped with the square box cover, wherein the peripheral size of the square box cover is larger than that of the square box body; a positioning boss which is in interference fit with the square box body is arranged on a fitting surface of the square box cover and the square box body; keyways are opened on an upper and a lower positioning surfaces of the square box body, wherein an orthographic projection line of a central axis of the square box body is used as a center line; a central height positioning hole is opened in the square box cover, wherein the center of the central height positioning hole is in a longitudinal center line of the square box cover; and threaded holes are opened in the upper and the lower positioning surfaces symmetrical with the keyway center line. The lathe clamp has the advantages that positioning and clamping of the clamp are simple and fast; positioning and aligning of the workpieces are rapid and accurate; clamp positioning for one time can be suitable for processing of a bearing pedestal with two center distances; and the processing accuracy is high and the production efficiency is improved by more than 4 times.

Description

The two centre-to-centre spacing turning attachments of square chest type

Technical field:

The utility model relates to the two centre-to-centre spacing turning attachments of a kind of square chest type, belongs to mechanical field.

Background technology:

Bearing block is the support positioning element of power transmission shaft; The full bearing blocks that lean on such as the stationarity of whole operation process, durability, carrying are stressed guarantee; Therefore the accuracy of manufacture of bearing block requires very high; The dimensional tolerance in form and position tolerances such as center height, symmetry, perpendicularity, hole, surface roughness etc. all have very high required precision, the processing of bearing block that two kinds of methods are arranged at present: 1. for the processing in the hole on the part of irregular body, generally all adopt boring machine or milling machine to carry out the processing in hole both at home and abroad.This conventional processing technology production efficiency is low, and surface roughness is poor, and dimensional accuracy is wayward during batch process, and bearing saddle bore is difficult to guarantee with respect to the symmetry of the keyway of bottom; 2. adopting angle block of right angle is the machined into method of anchor clamps: at first the four paws of chuck being laid down, is to close on chuck with the bolt handle with angle block of right angle then, workpiece is put together on the angle block of right angle again; Because the static unbalance behind bent plate and the clamping workpiece must be at the plane of symmetry closing counterweight, the dynamic balancing in the time of could guaranteeing running like this; This kind processing method production efficiency improves a lot; But the location centering of anchor clamps is difficulty comparatively, generally needs about 1～2 day, and dynamic balance weight is installed comparatively difficulty of configuration; Can only process a kind of bearing block of specification behind the anchor clamps location; Just need again the centering location in case change specification, owing to angle block of right angle, counterweight are to be fixed by bolts on the chuck, so locate very difficulty of adjustment.

Summary of the invention:

The purpose of the utility model provides a kind of anchor clamps positioning and clamping simple and fast; Workpiece, counterweight clamping are easy; Workpiece location centering is accurate; The anchor clamps one-time positioning is applicable to two kinds of distance between bearing seat processing that center, the two centre-to-centre spacing turning attachments of the square chest type that the machined into of the bearing block that machining accuracy is high is used.

The purpose of the utility model is realized by following mode:

The utility model comprises square box, square chest lid; Square box is by last locating surface, down locating surface, left facade, right facade surround, and the adjacent surface of square box is vertical each other, be parallel to each other to the opposite, and square box has two ports; Is furnished with the square chest lid on one of them port; The peripheral dimension of square chest lid is greater than the peripheral dimension of square box, and the mating surface with square box of square chest lid is provided with the positioning boss with the square box interference fit, and the orthographic projection line with the axis of square box on the upper and lower locating surface of square box is that center line has keyway; Cover the high locating hole in the center of having at square chest; The center of the high locating hole in center at locating surface on the square box, be symmetry with the keyway center line on the locating surface down, has screw hole on the longitudinal centre line of square chest lid.

Distance under the last locating surface of said square box and the square chest between the locating surface equals the centre-to-centre spacing sum of bearing block of the given centre-to-centre spacing of two kinds of specifications;

The center line of the high locating hole in said center equals the centre-to-centre spacing of the bearing block of two kinds of corresponding specifications respectively to the distance of the upper and lower end face of square chest lid positioning boss.

The utility model has the advantages that: anchor clamps positioning and clamping simple and fast; Workpiece, counterweight clamping are easy; Workpiece is located centering quick and precisely, and clock time can be located by centering in about 20 minutes, and the anchor clamps one-time positioning is applicable to two kinds of distance between bearing seats processing that center; Machining accuracy is high, production efficiency improves more than 5 times, and production cost significantly reduces.

Description of drawings:

Fig. 1 is the structural representation of utility model;

Fig. 2 is that the A-A of Fig. 1 is to cutaway view;

Fig. 3 is the upward view (having omitted bearing block among the figure closing bolt) of Fig. 2;

Fig. 4 is the front view of square box;

Fig. 5 is the front view of square chest lid;

Fig. 6 is the left view of Fig. 5.

In the accompanying drawing: 1. square box, 2. the handle between square chest lid and square box closes bolt, 3. square chest lid, 4. positioning key is closing screw, 5. positioning key; 6. clutch shaft bearing seat blank, the 7. second bearing block blank, 8. bearing block is closing bolt, 9. first counterweight, 10. locating surface on the square box; 11. the high locating hole in center, locating surface under 12. square box, 13. second counterweights, 14. chuck pawls; 15. bearing block is closing screw hole, 16. positioning keys are closing screw hole, 17. square box screws, locating surface keyway on 18.; 19. following locating surface keyway, 20. positioning boss, 21. positioning boss upper surfaces, 22. positioning boss lower surfaces.

The specific embodiment:

With reference to accompanying drawing; The two centre-to-centre spacing turning attachments of the square chest type of the utility model comprise square box 1, square chest lid 3, and square box is by last locating surface 10, locating surface 12, left facade, right facade surround down; The adjacent surface of square box is each other vertical, be parallel to each other to the opposite; Distance under the last locating surface of square box and the square chest between the locating surface equals the centre-to-centre spacing sum of bearing block of the given centre-to-centre spacing of two kinds of specifications, and square box has two ports, is furnished with square chest lid 3 on one of them port; The peripheral dimension of square chest lid is greater than the peripheral dimension of square box; The mating surface with square box of square chest lid is provided with the positioning boss 20 with the square box interference fit, and the orthographic projection line with the axis of square box on the upper and lower locating surface of square box is that center line has

keyway

18,19, covers the high locating hole 11 in the center of having at square chest; The center of the high locating hole in center is on the longitudinal centre line of square chest lid; And the center line of the high locating hole in center equals the centre-to-centre spacing of the bearing block of two kinds of corresponding specifications respectively to the distance of the upper and

lower end face

21,22 of square chest lid positioning boss, at locating surface on the square box, be symmetry with the keyway center line on the locating surface down, has the screw hole 15 of correspondence.

During application, adopt the two centre-to-centre spacing turning attachments of chuck clamping square chest type, carry out the processing in two kinds of distance between bearing seat holes that center, its clamping centering step is following:

1, the square chest type turning attachment is used the chuck clamping; Beat square box front end face with dial gauge; Guarantee that dial gauge beats≤0.02mm, hit the high locating hole 11 of the heart, make the center line of the high locating hole in center concentric with the machine tool chief axis axis; Dial gauge is beated≤0.02mm, and the Primary Location precision that just guaranteed anchor clamps this moment is in measurer indicating accuracy scope.

2. processed bearing saddle bore is with respect to the high accurate method of adjustment of keyway symmetry and center

At first the bottom surface with workpiece to be machined clutch shaft bearing seat blank 6, the second bearing block blank 7 processes, line cuts the keyway moulding, brill is attacked the bottom bolt hole, just possesses the clamping location condition this moment.

3. keyway symmetry method of adjustment

The clamping second bearing block blank 7 is anchored on square box under locating surface 12 from the square box bottom with workpiece closing bolt 8 with bearing block, and test run bearing block blank hole sees that circle gets final product, and gets into anchor clamps centering set-up procedure then then.

Unclamp workpiece; Again workpiece is anchored on locating surface under the square chest after horizontally rotating 180 °; Play the circular runout of test run bearing block blank hole with dial gauge; Like circular runout 2 times, then press about the 1/2 adjustment two corresponding pawls 14 (according to jitter values positive and negative confirm left still be to the right adjustment) of dial gauge according to the actual measurement jerk value greater than dial gauge indicating accuracy.

4. the high method of adjustment in center

Seen round test run bearing block blank hole actual diameter value with the outside micrometer measurement; The second bearing block blank hole bottom minimum point of measuring test run with altimeter arrives the actual range of locating surface down; (the A-center is high then to survey the high A=1/2D+H in center; D-test run bearing block blank hole actual diameter; The actual range of H-test run bearing block blank hole minimum point locating surface under the square chest) if this value departs from the center height and the tolerance grade of drawing requirement, 1/2 of high (containing tolerance grade) difference in center of then high according to the actual measurement center and drawing requirement is adjusted in the four paws two vertically opposite pawls (confirming upwards still to be adjustment downwards according to the positive and negative of difference) up and down.

The Che Kongjian circle repeats above-mentioned

steps

3 and 4 then once more, so just can guarantee the symmetry≤0.02mm of bearing block blank hole with respect to keyway 2～3 times repeatedly, center high level error≤0.02mm.

After said process finishes, just can carry out the formal processing of initial workpiece workpiece, produce in batches after first item inspection is qualified.In the batch production process; After the second bearing block blank 7 machines, lay down this bearing block and counterweight, clutch shaft bearing seat blank 6 usefulness keys are positioned on the last locating surface of square box; And use bolt; On following locating surface (the not locating surface of the installation shaft bearing) outer face of square box, utilize key screw to close counterweight, make the square chest type anchor clamps reach static balance, directly this bearing seat coach hole is got final product.

Claims

1. the two centre-to-centre spacing turning attachments of square chest type comprise square box, square chest lid, it is characterized in that: square box is surrounded by last locating surface, following locating surface, left facade, right facade; The adjacent surface of square box is each other vertical, be parallel to each other to the opposite; Square box has two ports, is furnished with the square chest lid on one of them port, and the peripheral dimension of square chest lid is greater than the peripheral dimension of square box; The mating surface with square box of square chest lid is provided with the positioning boss with the square box interference fit; Orthographic projection line with the axis of square box on the upper and lower locating surface of square box is that center line has keyway, covers the high locating hole in the center of having at square chest, and the center of the high locating hole in center is on the longitudinal centre line of square chest lid; At locating surface on the square box, be symmetry on the locating surface down with the keyway center line, have screw hole.

2. the two centre-to-centre spacing turning attachments of square chest type according to claim 1 is characterized in that: the distance under the last locating surface of said square box and the square chest between the locating surface equals the centre-to-centre spacing sum of bearing block of the given centre-to-centre spacing of two kinds of specifications.

3. the two centre-to-centre spacing turning attachments of square chest type according to claim 1 is characterized in that: the center line of the high locating hole in said center equals the centre-to-centre spacing of the bearing block of two kinds of corresponding specifications respectively to the distance of the upper and lower end face of square chest lid positioning boss.