CN204770985U - Gear hobbing lathe anchor clamps - Google Patents

Abstract

The utility model relates to a jig for a hobbing machine tool, which comprises a mounting base, a pressing plate and a pull rod. The main points are: the upper end surface of the installation base is provided with a positioning cavity, on which the first positioning mandrel and the second positioning mandrel are arranged in turn, and are fastened on the installation base with screws; the parts are sleeved on the second positioning mandrel , the pressing plate presses the part, and the pressing plate is tightened by the pull rod to press the part. The machine tool fixture of the utility model has a simple structure, adopts a two-stage positioning mandrel to center the gap and then corrects the outer circle, and the adjustment process is simple. High precision, good consistency of processed parts; easy loading and unloading of workpieces, saving time and effort, and improving the processing efficiency of parts; for parts of different sizes, only need to replace the second positioning mandrel of the corresponding size to realize the processing of parts of different sizes, The utilization rate of the fixture is improved, the tooling fixture is reduced, and the processing and manufacturing cost of the parts is reduced.

Description

A hobbing machine tool fixture

technical field

The utility model relates to a clamp, in particular to a gear hobbing machine tool clamp.

Background technique

When clamping the workpiece on the gear hobbing machine, especially the clamping of the planetary gear parts, it is necessary to correct the runout of the outer circle of the planetary gear. After the outer circle is corrected, it needs to be compressed with a pressure plate, because the parts will move during the compression process of the pressure plate. It is also necessary to recheck the runout of the outer circle, which takes a long time for processing preparation and complicated operation; the fixture using the inner hole positioning needs to finish the size of the inner hole of the planetary wheel, and the processing requirements are high, resulting in large processing costs.

Contents of the invention

The purpose of this utility model is to overcome the shortcoming of above-mentioned technology, provide a kind of simple in structure, easy to adjust, convenient to use gear hobbing machine clamp.

The fixture of the gear hobbing machine tool of the present invention includes a mounting base, a pressure plate and a pull rod, and is characterized in that: the upper end surface of the mounting base is provided with a positioning cavity, and a first positioning mandrel and a second positioning mandrel are arranged in sequence on it ; The first positioning mandrel is provided with a first positioning surface, a positioning flange and a second positioning surface; the second positioning mandrel is provided with an inner positioning surface; The two-stage pull rod is threadedly connected; the first positioning surface of the first positioning mandrel is in contact with the inner circular surface of the positioning cavity on the installation base, and is fastened on the installation base with screws; the second positioning mandrel is sleeved on the first On the positioning mandrel, the inner positioning surface of the second positioning mandrel is in contact with the second positioning surface of the first positioning mandrel, and is fastened on the first positioning mandrel with screws; the parts are sleeved on the second positioning mandrel, The pressure plate is pressed on the part, and the pressure plate is pulled by the pull rod to compress the part.

The machine tool fixture of the utility model has a simple structure, adopts a two-stage positioning mandrel to carry out gap centering and then corrects the outer circle, and the adjustment process is simple. High precision, good consistency of processed parts; easy loading and unloading of workpieces, saving time and effort, and improving the efficiency of parts processing; for parts of different sizes, only need to replace the second positioning mandrel of the corresponding size to realize the processing of parts of different sizes, The utilization rate of the fixture is improved, the tooling fixture is reduced, and the processing and manufacturing cost of the parts is reduced.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic structural diagram of the first positioning mandrel.

Fig. 3 is a schematic structural view of the second positioning mandrel.

In the figure: 1. Mounting base, 2. Primary pull rod, 3. Secondary pull rod, 4. First positioning mandrel, 5. Second positioning mandrel, 6. Press plate, 7. Screw, 8. First positioning surface , 9, positioning flange, 10, second positioning surface, 11, internal positioning surface, 12, parts, 13, positioning cavity.

Detailed ways

The gear hobbing machine clamp of the present utility model comprises a mounting base 1, a pressing plate 6 and a pull rod. The upper end surface of the mounting base 1 is provided with a positioning concave cavity 13, on which a first positioning mandrel 4 and a second positioning mandrel 5 are arranged in sequence. The first positioning mandrel 4 is provided with a first positioning surface 8 , a positioning flange 9 and a second positioning surface 10 . The second positioning mandrel 5 is provided with an inner positioning surface 11 . The pull rod is composed of a primary pull rod 2 and a secondary pull rod 3 threadedly connected. The first positioning surface 8 of the first positioning mandrel 4 is in contact with the inner circular surface of the positioning cavity 13 on the mounting base 1, and is fastened on the mounting base 1 with screws; the second positioning mandrel 5 is sleeved on the first positioning On the mandrel 4, the inner locating surface 11 of the second locating mandrel 5 is in contact with the second locating surface 10 of the first locating mandrel 4, and is fastened on the first locating mandrel 4 with screws 7; On the second positioning mandrel 5, the pressure plate 6 is pressed on the part 12. One end of the primary tie rod 2 is connected to the hydraulic cylinder of the machine tool, and the other end is threadedly connected to the secondary tie rod 3. The pull rod is pulled by the hydraulic cylinder of the machine tool to drive the pressure plate 6 to press the part. 12.

When in use, the installation base 1 of the fixture is fixed on the workbench of the gear hobbing machine tool, the primary tie rod 2 passes through the center hole of the installation base 1 and is threadedly connected with the hydraulic cylinder of the gear hobbing machine tool, and the parts 12 to be processed are set on the second positioning center On the shaft 5, the pressure plate 6 is pressed on the part 12 to be processed, the second-level pull rod 3 passes through the center hole of the pressure plate 6 and is threadedly connected with the first-level pull rod 2, and the gear hobbing machine is started, and the hydraulic cylinder pulls the first-level pull rod 2, and the first-level pull rod 2 is screwed together. The pull rod 2 pulls the secondary pull rod 3, and pulls the pressure plate 6 to compress the part 12 to be processed. After the gear hobbing is completed, the secondary pull rod 3 and the cover plate 6 are taken off in turn to remove the processed part 12.

By adopting the fixture, the loading and unloading of workpieces is convenient, time-saving, labor-saving and efficient, the adjustment process is simple, the positioning accuracy is high, and the processed parts have good consistency.

Claims (1)

1. a gear hobbing jig, comprise mounting seat (1), pressing plate (6) and pull bar, it is characterized in that: the upper surface of described mounting seat (1) is provided with located cavity (13), it is provided with successively the first apotting spindle (4), the second apotting spindle (5); Described the first apotting spindle (4) is provided with the first locating surface (8), locating flange (9) and the second locating surface (10); Described the second apotting spindle (5) is provided with plane decided at the higher level but not officially announced (11); Described pull bar is threaded by one-level pull bar (2) and secondary pull bar (3) and forms; First locating surface (8) of the first apotting spindle (4) touches with the inner headed face of the located cavity (13) in mounting seat (1), and by screws tighten in mounting seat (1); Second apotting spindle (5) is enclosed within the first apotting spindle (4), and the plane decided at the higher level but not officially announced (11) of the second apotting spindle (5) and second locating surface (8) of the first apotting spindle (5) touch, and are fixed tightly on the first apotting spindle (4) with screw (7); Part (12) is enclosed within the second apotting spindle (5), and pressing plate (6) is pressed on part (12), pulls pressing plate (6) compressing component (12) by pull bar.