CN205147887U - Bearing retainer's machining anchor clamps - Google Patents

Abstract

The utility model discloses a bearing retainer's machining anchor clamps, including the anchor clamps body that is equipped with base and vertical riser, the specific vertical riser of clamp on be equipped with and be used for the setting spindle of location, be provided with on the base and be used for spacing backing pin, the location borehole jack of machined part is established on setting spindle, lower extreme one side and backing pin contact, the machined part top is equipped with the bushing plate, and the bushing plate is fixed with the specific vertical riser of clamp, the bushing plate on be equipped with and be used for carrying out the renewable bushing and the bush of driling to the machined part. This mould adopts the location method of " a setting spindle adds a backing pin ", and simple to operate and location are reliable. Assemble into whole back, it is convenient to dismantle, but same kind of part of repeated machining is an economy, convenient operation's anchor clamps.

Description

A machining fixture for a bearing bracket

【Technical field】

The utility model relates to the field of preparation of bearing brackets, in particular to a machining fixture for bearing brackets.

【Background technique】

The bearing bracket is the core component of many machines. It acts as a supporting frame, bears a large force, and also has a positioning function to keep the parts in the correct position. The machining accuracy of the bearing bracket is directly related to the stability of the machine operation. The traditional fixture for machining the bearing bracket cannot guarantee the accuracy of the bearing bracket. In order to better ensure the accuracy of the bearing bracket, a mechanical processing of the bearing bracket is designed. Special fixture.

【Content of utility model】

The purpose of this utility model is to provide a special clamping mold for drilling holes in the machining bearing bracket. The mold adopts the positioning method of "one positioning mandrel plus one stop pin", which is convenient for installation and reliable for positioning. After being assembled into a whole, it is easy to disassemble, and the same part can be processed repeatedly. It is an economical and easy-to-operate fixture.

In order to achieve the above object, the utility model adopts the following technical solutions:

A machining fixture for a bearing bracket, comprising a clamp body with a base and a vertical vertical plate, the vertical vertical plate of the clamp body is provided with a positioning mandrel for positioning, and the base is provided with a position-limiting Stopper pin; the positioning hole sleeve of the workpiece is set on the positioning mandrel, and one side of the lower end of the workpiece is in contact with the stopper pin; a drilling template is arranged above the workpiece, and the drilling template is fixed with the vertical vertical plate of the clamp body; the drill The template is provided with replaceable drill sleeves and bushings for drilling workpieces.

The bushing and the replaceable drill bushing are sequentially set on the drill template from outside to inside, and are positioned in the holes of the drill template through the drill bush screw, and the nut of the drill bush screw presses the bush and the replaceable drill bush .

The drilling template is positioned by positioning pins and slotted countersunk screws.

The positioning mandrel is provided with a shaft shoulder, and is in clearance fit with the shaft installation hole on the vertical vertical plate of the clip body; the positioning mandrel is connected with the vertical vertical plate through a key.

One end of the positioning mandrel is connected to the vertical plate of the clamp body through a nut and a spring washer, and the other end is connected to the workpiece through a nut and a spring washer.

The diameter of the positioning hole in the workpiece is 72 mm, and the axis of the positioning hole is 170 mm away from the bottom surface of the workpiece; the height on the left side of the bottom of the workpiece is 20 mm, and the axial distance between the left end and the borehole is 70 mm.

Compared with other simple shape clamping bearing end cover molds, the utility model has the following beneficial effects:

This mold design designs a special fixture according to the characteristics of the bearing bracket. The fixture is easy to disassemble, economical and practical. With a fixed structure, the mold is divided into a clamp body and a drilling template, which are fixed with screws, nuts and washers to ensure the accuracy and precision of the size when drilling. The manufacturing cost is low and the maintenance is easy. The mold parts are easy to process and less difficult to operate. During maintenance, the clamp body and the drilling template can be repaired independently, which can save processing and maintenance costs. Easy to assemble and easy to disassemble. The utility model relates to a special clamping mold for processing boreholes in bearing brackets.

Furthermore, the positioning mandrel and the clamp body are fixed by keys, and the connection is stable, and the drilling process will not shake and affect the drilling accuracy.

【Description of drawings】

Fig. 1 is a sectional view of the fixture structure of the utility model.

Fig. 2 is a top view of the clamp of the present invention.

Figure 3(a) Schematic diagram of the workpiece structure;

Figure 3(b) is a cross-sectional view of the workpiece structure.

In the figure: 1. Clamp body; 2. Nut; 3. Positioning mandrel; 4. Key; 5. Drill template; 6. Slotted countersunk head screw; 7. Drill sleeve screw; Bushing; 10, workpiece; 11, spring washer; 12, stop pin; 13, positioning pin; 10-1, positioning hole; 10-2, left side; 10-3, drilling.

【detailed description】

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, and the utility model is not limited to the following embodiments.

As shown in Fig. 1 and Fig. 2, a mechanical processing fixture of a bearing bracket of the present invention includes a clamp body 1 provided with a base and a vertical vertical plate, and a retaining pin 12 for positioning on the base of the clamp body, And be provided with the positioning mandrel 3 that is used for positioning on the vertical upright plate of clamp body, be provided with drilling template 5 above workpiece 10, drill template 5 is groove structure, it is provided with corresponding with workpiece 10 below Aperture, drilling template 5 is positioned by positioning pin 13 and slotted countersunk head screw 6.

The positioning mandrel 3 runs through the positioning hole of the workpiece 10, and one end of the positioning mandrel is connected to the vertical vertical plate of the clamp body 1 by a nut 2 and a spring washer, and the other end is connected to the workpiece 10 by a nut and a spring washer 11.

The drilling template 5 is positioned through the processing part 10 connected on the clamp body, the positioning pin 13 and the slotted countersunk screw 6 . The drill template 5 is provided with a replaceable drill sleeve 8 and a bushing 9, and they penetrate into the holes of the drill template 5 through drill sleeve screws 7 for positioning.

Among them, the fixture adopts the method of "one positioning mandrel plus one stop pin" to limit the 6 degrees of freedom of the workpiece and ensure the accuracy of the machining hole of the fixture, that is: (10-1 in Figure 3(a)) The Φ72mm hole and the bottom left of the workpiece are positioned.

The mandrel 3 is positioned with the clearance of the shaft shoulder, and the cutting torque is transmitted by the clamping friction force generated by the clamping of the end nut, which limits the five degrees of freedom of the workpiece, which are the movement in the X, Y, and Z directions and the Y , Z direction rotation. A cylindrical stop pin is used at the base of the clamp body 1 to limit a degree of freedom, that is, rotation in the X direction. The six degrees of freedom of the machined part are completely restricted, which ensures the precision of the machined hole.

Among them, the Φ72mm through hole of the workpiece and the left side of the bottom limit 6 degrees of freedom, and the processing of the Φ10mm hole requires complete positioning, so the Φ72mm through hole and the left side of the bottom of the workpiece can meet the positioning requirements. The positioning of the left side of the bottom of the workpiece can be done with the cylindrical stop pin 12, the positioning of the Φ72mm hole can be carried out simultaneously with the tightening of the parts, and the positioning of the Φ72mm hole can be performed by the positioning mandrel 3.

The spring washer in this fixture is cushioned in the nut of the positioning mandrel, and its disassembly is simple.

A specific embodiment is given below to further illustrate the utility model.

As shown in Figure 3 (a) and Figure 3 (b), the diameter of the positioning hole 10-1 in the workpiece 10 is selected to be 72 mm, and the through hole is 170 mm away from the bottom surface, and the height of the left side 10-2 of the workpiece 10 bottom is 20mm, the axial distance from the Φ10mm hole is 70mm. It can be seen from Figure 1 that on the drill template, the corresponding positions of the drill holes and the counterbores.

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

1) Assemble each part according to Fig. 1 and Fig. 2; the clamp body 1 is placed on a plane (vertical drilling machine), the cylindrical stop pin 12 is fixed on the base of the clamp body 1, and the left end of the positioning mandrel 3 is aligned with the clamp body The spring washer and the nut 2 that are in contact on the vertical vertical plate of the specific 1 are tightened, and then the workpiece 10 is placed on the positioning mandrel 3, and the The positioning mandrel 3 cooperates with the workpiece 10 for positioning. After the workpiece 10 is placed, the workpiece 10 is clamped with a hexagon nut and a spring washer 11. The drilling template 5 is connected to the clamp by the positioning pin 13 and the slotted countersunk screw 6. Specifically 1, the drill sleeve screw 7 is arranged on the left side of the replaceable drill sleeve 8, and the bushing 9 and the replaceable drill sleeve 8 are set on the counterbore corresponding to the workpiece 10 on the drill template 5;

2) Disassemble the drilling template 8, and take out the processed parts;

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

The above is only the clamp embodiment of the utility model, and the above-mentioned embodiment does not limit the utility model in any way, any simple modification, change and modification made according to the scope of the technical solution of the utility model and the above examples Equivalent structural changes still belong to the protection scope of the technical solution of the utility model.

Claims (6)

1. the clamping tool for machine work of a support of bearing, it is characterized in that, comprise the clamp body (1) being provided with base and vertical riser, the vertical riser of described clamp body (1) is provided with the apotting spindle (3) for location, base is provided with for spacing backing pin (12); The locating hole of workpiece (10) is set on apotting spindle (3), and workpiece (10) side, lower end contacts with backing pin (12); Workpiece (10) top is provided with bushing plate (5), and bushing plate (5) is fixed with the vertical riser of clamp body (1); Described bushing plate (5) is provided with renewable bushing (8) for holing to workpiece (10) and lining (9).

2. the clamping tool for machine work of a kind of support of bearing according to claim 1, it is characterized in that: described lining (9), renewable bushing (8) are enclosed within bushing plate from outside to inside successively, and extend through in the hole of bushing plate (5) locate by drill bushing screw (7), the nut compressing lining (9) of drill bushing screw (7) and renewable bushing (8).

3. the clamping tool for machine work of a kind of support of bearing according to claim 1, is characterized in that: described bushing plate (5) is by alignment pin (13) and slotted countersunk flat head screw (6) location.

4. the clamping tool for machine work of a kind of support of bearing according to claim 1, is characterized in that: described apotting spindle (3) the band shaft shoulder, and with the axle installing hole matched in clearance on the vertical riser of clamp body (1); Apotting spindle (3) is connected with vertical riser by key (4).

5. the clamping tool for machine work of a kind of support of bearing according to claim 4, it is characterized in that: one end of described apotting spindle is connected on the vertical riser of clamp body (1) by nut (2) and spring washer (11), and the other end is connected on workpiece (10) by nut and spring washer (11).

6. the clamping tool for machine work of a kind of support of bearing according to claim 1, it is characterized in that: the diameter of the locating hole (10-1) in described workpiece (10) is 72mm, locating hole (10-1) axial line distance workpiece (10) bottom surface 170mm; The height of workpiece (10) bottom left (10-2) is 20mm, and the axial line distance of (10-2) end, left side and boring (10-3) is 70mm.