CN205519806U - Drilling special fixture of reduction case - Google Patents

Abstract

The utility model discloses a drilling special fixture of reduction case, including the anchor clamps body that has base and perpendicular riser, be provided with the first bearing plate and the third bearing plate that are used for the machined part location on the base, be provided with the second bearing plate and a nail that are used for the machined part location on the perpendicular riser, first bearing plate, the second bearing plate, the third bearing plate matches with a nail and limits six degrees of freedom of machined part, be provided with the bushing plate of arranging the machined part top in on the anchor clamps body, be provided with on the base and be connected with the base through stud, a moving press plate for compressing tightly the machined part, match through three bearing plate and one nail and limit six degrees of freedom of machined part, thereby reach the mesh of machined part location, it is more stable when making drilling, thereby assurance precision, this device low in manufacturing cost is honest and clean, the maintenance is simple and convenient, the mould spare part processing of this device is convenient, the operation degree of difficulty is little, the anchor clamps body can independently be repaired with the bushing plate during maintenance, can practice thrift processing cost of maintenance.

Description

A special jig for drilling a reducer box

technical field

The utility model belongs to the field of reducer box preparation, in particular to a special clamp for drilling the reducer box.

Background technique

There are many holes on the box of the reducer. During the processing of these holes, different fixtures are used to position and fix the box of the reducer. Every time a hole is machined, the workpiece needs to be re-clamped and the fixture replaced. Not only is the operation troublesome, The processing efficiency is low, and at the same time, the position accuracy requirements of each hole after processing cannot be well guaranteed.

Contents of the invention

The purpose of this utility model is to overcome the above-mentioned shortcomings, and provide a special fixture for drilling the reducer box, which adopts the positioning method of "three supporting plates and one supporting nail", which is convenient for installation and reliable for positioning.

In order to achieve the above purpose, the utility model includes a clamp body with a base and a vertical vertical plate, the base is provided with a first support plate and a third support plate for positioning the workpiece, and the vertical vertical plate is provided with a first support plate for positioning the workpiece Two support plates and support nails, the first support plate, the second support plate, the third support plate and the support nails cooperate to limit the six degrees of freedom of the workpiece. The clamp body is provided with a drilling template placed above the workpiece, and the base The upper part is provided with a moving platen connected to the base through double-ended studs for pressing the workpiece.

A spring is sheathed on the stud between the base and the movable pressing plate, and spring washers are arranged at both ends of the spring.

The double-ended studs are fixed on the base through set screws, and the double-ended studs are fixed on the movable pressing plate through the spherical shoulder nut, and there is a tapered gasket between the spherical shoulder nut and the movable pressing plate.

The drilling template has a grooved structure and is positioned by slotted countersunk screws and cylindrical pins.

The drilling template is provided with a number of drilling holes corresponding to the workpiece.

A replaceable drill bushing and a bushing are arranged in the borehole, and the drill bushing and the bushing are fixed in the borehole by drill bushing screws.

The drilling template is fixed on the clamp body through an adjustable support.

The first support plate, the second support plate and the third support plate are all fixed on the clamp body by several slotted cylindrical head screws.

The base is provided with bolts fixed by hexagonal thin nuts for supporting the moving platen.

Compared with the prior art, the utility model restricts the six degrees of freedom of the workpiece through the cooperation of three support plates and a support nail, so as to achieve the purpose of positioning the workpiece and make drilling more stable, thereby ensuring accuracy. The manufacturing cost of the device is low, and the maintenance is easy. The mold parts of the device are easy to process and the operation is less difficult. During maintenance, the clamp body and the drilling template can be repaired independently, which can save processing and maintenance costs.

Further, the utility model is divided into a clamp body and a drilling template, which are all fixed with screws, nuts and washers, which can ensure the accuracy and precision of the size when drilling.

Further, the drill hole of the present invention is provided with replaceable drill sleeves and bushings, which can be adapted to drill holes of different sizes.

Description of drawings

Fig. 1 is a structural sectional view of the utility model;

Fig. 2 is the structure left view of the present utility model;

Fig. 3 is a structural top view of the utility model;

Fig. 4 is the structural representation of the workpiece of the present utility model;

In the figure, 1. clamp body; 2. hexagonal thin nut; 3. set screw with slotted tapered end; 4. moving pressure plate; 5. spring washer; 6. conical washer; 7. spherical shoulder nut; 8. Stud; 9. Spring; 10. Slotted cylindrical head screw; 11. Drill template; 12. Bushing; 13. Drill sleeve screw; 14 Workpiece; 15. First support plate; 16. Second support plate ; 17, replaceable drill sleeve; 18 adjustable support; 19, slotted countersunk screw; 20, straight pin; 21, third support plate; 22 support nail.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

Referring to Fig. 1, Fig. 2 and Fig. 3, the utility model includes a clamp body 1 having a base and a vertical vertical plate, the base is provided with a first support plate 15 and a third support plate 21 for positioning the workpiece 14, and the vertical vertical plate The second support plate 16 and support nails 22 for the positioning of the workpiece 14 are arranged on the top, and the first support plate 15, the second support plate 16 and the third support plate 21 are all fixed on the clamp body 1 by several slotted cylindrical head screws 10. Above, the first support plate 15, the second support plate 16, the third support plate 21 and the support nail 22 cooperate to limit the six degrees of freedom of the workpiece 14, and the clamp body 1 is provided with a drilling template placed above the workpiece 14 11. The base is provided with a movable platen 4 connected to the base through studs 8 for pressing the workpiece 14 .

The hexagonal thin nut 2 is used to tighten the bolt on the left side of the stud 8, and the moving platen 4 is supported by the cooperation of the hexagonal thin nut 2 and the bolt, and a spring is set on the stud 8 between the base and the moving platen 4 9. The two ends of the spring 9 are provided with spring washers 5, the double-ended studs 8 are fixed on the base through the set screws 3, and the double-ended studs 8 are fixed on the moving platen 4 through the spherical shoulder nuts 7, and the spherical shoulders There is a tapered washer 6 between the nut 7 and the moving platen 4 .

Drilling template 11 is a groove structure, and is positioned by slotted countersunk head screws 19 and cylindrical pins 20. Drilling template 11 is provided with a number of drill holes corresponding to workpieces 14, and replaceable drill sleeves 17 are arranged in the drill holes. And the bushing 12, the drill bushing 17 and the bushing 12 are fixed in the drill hole by the drill bushing screw 13, and the drilling template 11 is fixed on the clamp body 1 by adjusting the support 18.

The utility model adopts the method of "three support plates plus one support nail" to limit the six degrees of freedom of the workpiece and ensure the accuracy of the processing holes of the fixture, namely: the A surface and the B surface in Fig. 4(b) Fixed with the first support plate 15 and the third support plate 21, the C surface and the D surface among Fig. 4 (a) are fixed with the second support plate 16 and the support nail 22.

The A surface and the B surface of the workpiece 14 are positioned by the first support plate 15 and the third support plate 21, which limit three degrees of freedom, namely the rotation in the X direction, the rotation in the Y direction and the movement in the Z direction. The C surface of the workpiece 14 is positioned by the second support plate 16, which restricts two degrees of freedom, that is, movement in the Y direction and rotation in the Z direction. The D surface of the workpiece 14 is positioned by the support pin 22, which restricts one degree of freedom, that is, the movement in the X direction. The six degrees of freedom of the machined part are completely restricted, which ensures the precision of the machined hole.

The support plate in this fixture is connected to the fixture body with slotted countersunk screws, and its disassembly is simple. There are 4 holes corresponding to the workpiece 14 on the drilling template 11, and 4 holes can be drilled at the same time.

Example:

As shown in Figure 4(b), surface A in the selected workpiece 14 is a circle with a diameter of 300 mm, the distance from surface A to the center line is 80 mm, and the distance from surface B to the center line is 79 mm. As shown in Fig. 4 (a), the length of the C surface of the workpiece 14 is 235mm, the axial distance from the Φ25mm hole on the right is 55mm, the length of the D surface is 215mm, and the axial distance from the Φ25mm hole is 64mm. It can be seen from Fig. 1 that on the drill template, the corresponding positions of the drilled holes and each counterbore.

The using method of the present utility model comprises the following steps:

1) Assemble each part according to Fig. 1, Fig. 2 and Fig. 3; the clamp body 1 is placed on a plane (vertical drilling machine), and the first support plate 15, the third support plate 21 and the second support plate 16 are sequentially Fix on the clamp body 1 with slotted cylinder head screws 10, fix the support nails 22 on the vertical vertical plate of the clamp body 1, put the workpiece 14 on the clamp body, and use the moving platen 4, cone Shaped washer 6, spherical shoulder nut 7 and stud 8 clamp the workpiece 14, the drill template 11 is connected to the clamp body 1 through the slotted countersunk screw 19 and cylindrical pin 20, and the drill sleeve screw 13 is located on On the frame of the drilling template 11, the bushing 12 and the replaceable drill sleeve 17 are set on the counterbore corresponding to the workpiece 14 on the drilling template 11;

2) Simultaneously drill 4 counterbores with a diameter of 8mm;

3) Disassemble the drilling template 11, and take out the processed parts;

4) Repeat the above process to process the same kind of parts.

Claims (9)

1. A special jig for drilling a reducer box, characterized in that: it includes a clamp body (1) with a base and a vertical vertical plate, and the base is provided with a first support plate (15) for positioning the workpiece (14) ) and the third support plate (21), the second support plate (16) and support nails (22) for the positioning of the workpiece (14) are arranged on the vertical vertical plate, the first support plate (15), the second support plate (16), the third support plate (21) and the support nail (22) cooperate to limit the six degrees of freedom of the workpiece (14), and the clamp body (1) is provided with a drilling template placed above the workpiece (14) (11), the base is provided with a movable pressing plate (4) that is connected to the base by a double-ended stud (8) and is used to compress the workpiece (14). 2. A special fixture for drilling a reducer case according to claim 1, characterized in that: a spring (9) is sheathed on the stud (8) between the base and the moving platen (4) ), the two ends of the spring (9) are provided with spring washers (5). 3. The special jig for drilling a reducer case according to claim 1, characterized in that: the stud (8) is fixed on the base by a set screw (3), and the stud (8) (8) is fixed on the moving platen (4) through the spherical shoulder nut (7), and there is a tapered gasket (6) between the spherical shoulder nut (7) and the moving platen (4). 4. A special jig for drilling a reducer case according to claim 1, characterized in that: the drilling template (11) has a grooved structure, and is inserted through a slotted countersunk screw (19) and a cylindrical pin (20) Positioning. 5 . The special jig for drilling a reducer case according to claim 1 , characterized in that: the drilling template ( 11 ) is provided with several drilling holes corresponding to the workpiece ( 14 ). 6. The special jig for drilling a reducer case according to claim 5, characterized in that: a replaceable drill sleeve (17) and a bushing (12) are arranged in the drill hole, and the drill sleeve ( 17) and the bushing (12) are fixed in the borehole by the drill sleeve screw (13). 7. A special jig for drilling a reducer case according to claim 1, characterized in that: the drilling template (11) is fixed on the jig body (1) by adjusting the support (18). 8. A special jig for drilling a reducer case according to claim 1, characterized in that: the first support plate (15), the second support plate (16) and the third support plate (21) All are fixed on the clamp body (1) by several slotted cylindrical head screws (10). 9. A special jig for drilling a reducer case according to claim 1, characterized in that: the base is provided with bolts fixed by hexagonal thin nuts (2) for supporting the moving platen (4) .