CN206200629U - A kind of positioning tool of turbine wheel shaft - Google Patents

Abstract

The utility model relates to the field of turbocharger production, in particular to a positioning tool for a turbine shaft, which includes a limit plate, a bracket, a hydraulic tip and a mounting seat, wherein the mounting seat is fixed on the shaft end of a machine tool spindle, and the hydraulic pressure The top is driven out by the spindle of the machine tool, the bracket is fixed on the mounting seat, an opening for the turbine to enter and exit is provided on the bracket, and the limit plate is fixed on the free end of the mounting seat. A shaft hole and an insertion slot are arranged on the limit disc, and the insertion slot communicates with the shaft hole. The utility model is suitable for processing various types of turbine shafts, and has high processing precision.

Description

A positioning tool for a turbine shaft

technical field

The utility model relates to the field of turbocharger production, in particular to a positioning tool for a turbo shaft.

Background technique

The turboshaft machining method of the turbocharger in the prior art usually includes the following steps: 1. Rough turning to find the overall length of the circle, and semi-finishing the outer circle; 2. Heat treatment to remove welding stress; 3. The deflection instrument to measure the runout of the outer circle; 4. 1. Center hole repair; 5. Grinding the outer circle and end face of the turbine; 6. Grinding the R groove at the root of the turbine shaft with a shovel; 7. Flaw detection inspection; 8. Finishing the outer circle and end face of the car; 11. Repair the center hole; 12. Grind the outer circle of the center frame; 13. Drill the end hole of the optical shaft and turn the thread; 14. Roughly turn the piston ring groove; 15. Grind the piston ring groove with a fine shovel; 16. Finely grind the outer Round and end face; 17. Grinding the meridian surface of the turbine; 18. Fitter repairing burrs; 19. Dynamic balance; 20. Flaw detection and cleaning. In this traditional method, it is necessary to clamp the outer circle of the turbine with three claws, align the end face of the turbine, use the tip to top the small end face of the optical axis, and turn out a section of the outer circle near the small end of the optical axis, then build a center frame, and turn the small end face of the optical axis Guarantee the total length, drill the center hole, and then match the two ends of the thick shaft rod part, and the claw type of the three claws must match the R type of the outer circle of the turbine. Since the R type of each type of turbine shaft is different, the processing of different types of turbine shafts needs to be re-processed. With claw type, and the machining accuracy is difficult to guarantee.

Utility model content

The purpose of the utility model is to provide a positioning tool for a turbine shaft, which is suitable for processing various types of turbine shafts and has high machining accuracy.

The purpose of this utility model is achieved through the following technical solutions:

A positioning tool for a turbine shaft, including a limit plate, a bracket, a hydraulic tip and a mounting seat, wherein the mounting seat is fixed on the shaft end of a machine tool spindle, the hydraulic tip is driven out by the machine tool spindle, and the bracket is fixed on the machine tool spindle. On the above-mentioned mounting seat, an opening for the turbine to enter and exit is provided on the support. The insertion groove communicates with the shaft hole.

During processing, the shoulder arranged on the outer side of the turbine end surface of the turbine shaft enters the shaft hole through the insertion groove.

A spigot end surface is provided on the end surface of the turbine, and the spigot end surface abuts against the inner side of the limiting disc.

During processing, the turbine end surface of the turbine shaft is pushed by the hydraulic top to abut against the inner side of the limit plate.

Advantage and positive effect of the present utility model are:

1. The utility model is suitable for machining various types of turbine shafts, and has good versatility and high machining accuracy.

2. The structure of the utility model is simple to use and easy to install.

Description of drawings

Figure 1 is a schematic diagram of the semi-finished product of the turbine shaft,

Fig. 2 is a schematic diagram of an intermediate product obtained by further processing the turbine shaft in Fig. 1,

Fig. 3 is the schematic diagram of the utility model,

Fig. 4 is the working status schematic diagram of the present utility model,

Among them, 1 is the optical axis, 2 is the center hole of the shaft end, 3 is the center hole of the turbine end, 4 is the outer circle of the turbine, 5 is the end face of the turbine, 6 is the auxiliary top, 7 is the end face of the end, 8 is the R groove, and 9 is the shaft Shoulder, 10 is a limit plate, 11 is a shaft hole, 12 is a slot for putting in, 13 is a support, 14 is a hydraulic top, and 15 is a mounting seat.

detailed description

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

As shown in Figures 3-4, the utility model includes a limit plate 10, a bracket 13, a hydraulic tip 14 and a mounting seat 15, wherein the mounting seat 15 is fixed on the shaft end of the machine tool spindle, and the hydraulic tip 14 passes through the machine tool spindle. Drive ejection, bracket 13 is fixed on the described mounting base 15, is provided with the opening for turbine access on the described bracket 13, and the limiting plate 10 is fixed on the free end of described mounting base 15, and is fixed on the described mounting base 15. The bit plate 10 is provided with a shaft hole 11 and a slot 12, and the slot 12 communicates with the shaft hole 11. When the utility model is in use, the shaft shoulder 9 on the outside of the turbine end face 5 is placed by the slot. The slot 12 enters the shaft hole 11, and then the hydraulic tip 14 pushes out so that the turbine end surface 5 is fixed against the inner side of the limit disc 10.

In addition, since the turbine shaft is still a blank during rough machining, the turbine end face 5 is not necessarily smooth enough. In order to ensure the accuracy of subsequent processing, the utility model firstly processes a spigot end face 7 on the turbine end face 5, and the turbine shaft is placed After entering, the end face 7 of the spigot is fixed against the inner side of the limit plate 10, and as shown in Figures 1-2, the subsequent processing also needs to process the R groove 8 at the root of the turbine shaft. When the R groove 8 is processed, the The spigot end face 7 can be removed, and the distance between the spigot end face 7 and the turbine end face 5 should ensure the processing requirements of the subsequent R groove 8. Those skilled in the art can calculate the distance between the spigot end face 7 and the turbine end face 5 according to the design drawings .

As shown in Figures 1-2, a kind of turbine shaft processing method adopting the utility model, concrete steps are as follows:

1. Roughly turn the outer circle, and punch out the center hole 2 of the shaft end and the center hole 3 of the turbine end;

2. A spigot end face 7 is machined on the turbine end face 5 by finish turning. In this embodiment, the distance between the spigot end face 7 and the turbine end face 5 is 2 mm, and the distance between the spigot end face 7 and the turbine end face 5 should ensure that the subsequent R Groove 8 machining.

3. Connect the mounting seat 15 to the main shaft of the machine tool, and put the shaft shoulder 9 outside the turbine end face 5 into the shaft hole 11 through the insertion groove 12;

4. The hydraulic tip 14 protrudes to withstand the center hole 3 of the turbine end, and makes the end surface 7 of the spigot contact the end surface of the limit plate 10, and the center hole 2 of the shaft end passes through the auxiliary tip 16 on the machine tool. live;

5. The outer circles of all levels on the optical axis 1 of the semi-finishing car;

6. Heat treatment annealing;

7. Grinding turbine outer circle 4 and turbine end face 5;

8. Flaw detection inspection;

9. Remove the spigot end face 7, and process the R groove 8 at the root of the turbine shaft;

10. Put the workpiece into the shaft hole 11 of the limiting disk 10 again, use the auxiliary tip 16 on the machine tool of the hydraulic tip 14 to withstand the workpiece, and finish the outer circles and end faces of all levels on the optical axis 1.

Wherein steps 5, 6, 7, 8 and other machining processes of the turbine shaft are the same as the prior art.

Claims (4)

1. A positioning tool for a turbine shaft, characterized in that: it includes a limit plate (10), a bracket (13), a hydraulic tip (14) and a mounting seat (15), wherein the mounting seat (15) is fixed on The shaft end of the machine tool spindle, the hydraulic tip (14) is driven out by the machine tool spindle, the bracket (13) is fixed on the mounting seat (15), and the bracket (13) is provided with an opening for the turbine to enter and exit , the limit plate (10) is fixed on the free end of the mounting base (15), and the limit plate (10) is provided with a shaft hole (11) and a slot (12), and the put The groove (12) communicates with the shaft hole (11). 2. The positioning tool of the turbine shaft according to claim 1, characterized in that: during processing, the shoulder (9) arranged on the outer side of the turbine end surface (5) of the turbine shaft enters the shaft hole through the insertion groove (12) (11). 3. The positioning tool for the turbine shaft according to claim 1, characterized in that: the turbine end surface (5) is provided with a spigot end surface (7), and the spigot end surface (7) and the limit plate (10) The inner side is offset. 4. The positioning tool of the turbine shaft according to claim 1, characterized in that, during processing, the turbine end surface (5) of the turbine shaft is pushed by the hydraulic center (14) to offset against the inner side of the limit plate (10).