CN204565684U - Circular reverser ball nut side keyway fixture - Google Patents

Abstract

The utility model discloses a kind of circular reverser ball nut side keyway fixture, comprise V-type base, V-type pressing plate, pin, bolt and nut, described ball nut relies on cylindrical to be clamped between V-type base and V-type pressing plate, and fixed by bolt and nut, described pin, through the reverser hole in the middle part of ball nut, is fixed on the middle part of V-type base with interference fit.The utility model uses this fixture can realize batch machining after a good workpiece coordinate of centering, need not the every independent centering of part product, naturally improves efficiency.Simultaneously, unified workpiece coordinate makes the dimensional uniformity of product have qualitative leap than single-piece centering, significantly improves installation accuracy, ensure that product quality, and labour intensity and the technical requirement of workman is greatly reduced by Cutter Body Processing with Machining Center, reduce processing cost.

Description

Circular Reverser Ball Nut Face Keyway Fixture

technical field

The utility model belongs to the field of mechanical processing, and relates to a fixture for parts, in particular to a machined fixture for ball nuts of circular reversers.

Background technique

When processing the keyway on the two ends of the round reverser ball nut M3205, it is often used to directly press it on the workbench on the general milling machine. Since each end of each nut needs to be set, the work efficiency is low, and the product size The consistency is poor, and the labor intensity of workers increases, which affects the installation accuracy and product completion progress.

Utility model content

The utility model designs a keyway fixture on the end face of the ball nut of the circular reverser. Using the fixture, the keyway processing of the ball nut of the circular reverser can be realized in large quantities. During the processing, the vertical machining center can be used to find the coordinates of the workpiece at one time. Then realize batch processing.

The technical scheme of the utility model is as follows:

A circular reverser ball nut end face keyway fixture, including a V-shaped base, a V-shaped pressure plate, pins, bolts and nuts, the ball nut is clamped between the V-shaped base and the V-shaped pressure plate by virtue of the outer circle , and fixed by bolts and nuts, the pin passes through the reverser hole in the middle of the ball nut, and is fixed in the middle of the V-shaped base with an interference fit.

In the keyway fixture on the end face of the circular reverser ball nut, the pin and the reverser hole are clearance fit with a gap of 0.01 mm.

In the above-mentioned circular reverser ball nut end face keyway fixture, the bolts at both ends of the V-shaped pressure plate are fixed with an open groove structure for easy loading and unloading.

In the keyway fixture on the end face of the circular reverser ball nut, the V-shaped base is provided with a U-shaped groove for fixing the fixture.

In the keyway fixture on the end face of the circular reverser ball nut, the area of the bottom plate of the V-shaped base is greater than that of the V-shaped pressure plate.

The utility model can realize batch processing after the coordinates of the workpieces are corrected once by using the fixture, without the need for separate calibrations for each product, which naturally improves the labor efficiency. At the same time, the unified workpiece coordinates make the dimensional consistency of the product a qualitative leap compared with single-piece alignment, greatly improving the installation accuracy and ensuring product quality. Moreover, processing with a machining center greatly reduces the labor intensity and technical requirements of workers, and reduces the processing cost.

Description of drawings

Fig. 1 is the front view of the keyway fixture on the end face of the ball nut of the present invention;

Fig. 2 is a top view of the keyway fixture on the end face of the ball nut of the present invention;

Fig. 3 is a side view of the keyway fixture on the end face of the ball nut of the present invention;

Fig. 4 is a three-dimensional view of the keyway fixture on the end face of the ball nut of the present invention;

Reference signs: 1—V-shaped base; 2—bottom plate; 3—V-shaped pressure plate; 4—bolt; 5—nut; 6—ball nut; 7—pin; 8—keyway.

Detailed ways

As shown in Figure 1-4, the round reverser ball nut end face keyway fixture is used to process the keyway 8, which includes a V-shaped base 1, a V-shaped pressure plate 3, pins 7, bolts 4 and nuts 5, and the ball nut 6 is clamped between the V-shaped base 1 and the V-shaped pressure plate 3 by the outer circle, and fixed by the bolt 4 and the nut 5, and the pin 7 passes through the reverser hole in the middle of the ball nut 6, and is fixed on the In the middle of the V-shaped base 1, there is a clearance fit between the pin 7 and the reverser hole, and the clearance is 0.01mm.

During the implementation, the middlemost circular reverser hole on the M3205 ball nut 6 is inserted into the pin 7 in the center of the V-shaped base 1, and the outer cylindrical surface of the ball nut 6 and the two slopes on the V-shaped are firmly connected. The two slopes of the V-shape limit the movement of the nut in the X and Z directions, and at the same time limit the rotation of the nut in the X and Z directions. Because the pin inserted into the reverser hole is fixed on the V-shaped base with an interference tight fit, it also limits the movement of the nut in the Y direction and the rotation of the Y axis, thereby limiting the six freedoms of the nut in three-dimensional space. degree, to achieve the complete positioning of the nut.

The V-shaped pressing plate is used on the ball nut to increase the pressing position and make the pressing more reliable. Both ends of the pressure plate adopt an open slot structure, which can make the loading and unloading of the nut more convenient, and at the same time, there is a gap of 0.5 mm between the open slot and the screw rod, which can prevent over-positioning. The lower part of the V-shaped base adopts a widened structure to increase the bottom area and improve the stability of the fixture. The width of the upper part is just right to avoid interference with the tool during processing. The two U-shaped grooves on the bottom are used to fix the clamps.

When using this fixture: first use the dial indicator to align the V-shaped base parallel to the Y-axis of the machine tool, and fix the entire fixture on the machine tool table through the U-shaped grooves at both ends of the base. Then install the nut M3205 into the base according to the steps in Instruction 1, then install the V-shaped pressure plate, and tighten it with screws. Finally, find the zero point of the workpiece coordinates of the nut on the machine tool, and then use the three-side milling cutter to process the keyways at both ends of the nut on the vertical machining center.

Claims (5)

1. a circular reverser ball nut side keyway fixture, it is characterized in that: comprise V-type base (1), V-type pressing plate (3), pin (7), bolt (4) and nut (5), described ball nut (6) relies on cylindrical to be clamped between V-type base (1) and V-type pressing plate (3), and fixed by bolt (4) and nut (5), described pin (7), through the reverser hole at ball nut (6) middle part, is fixed on the middle part of V-type base (1) with interference fit.

2. circular reverser ball nut side keyway fixture according to claim 1, is characterized in that: be matched in clearance between described pin (7) and reverser hole, gap is 0.01mm.

3. circular reverser ball nut side keyway fixture according to claim 1, is characterized in that: the open slot structure of being convenient to load and unload fixedly taked by the bolt at the two ends of described V-type pressing plate (3).

4. circular reverser ball nut side keyway fixture according to claim 1, is characterized in that: described V-type base (1) has the U-type groove of stationary fixture.

5. circular reverser ball nut side keyway fixture according to claim 1, is characterized in that: the area of the base plate (2) of V-type base (1) is greater than the area of V-type pressing plate (3).