Machining tool for special-shaped hole of thrust bearing plate

Abstract

The utility model belongs to the technical field of machining tools, and particularly relates to a machining tool for a special-shaped hole of a thrust bearing plate, which comprises a positioning fixing plate and a connecting shaft, one end of the connecting shaft is fixedly connected with the positioning fixing plate, and the other end of the connecting shaft is connected with a fixing nut through threads; the positioning fixing plate is fixedly connected with a positioning shaft; a clamping shaft which is coaxial with the connecting shaft is fixed on the positioning fixing plate; an open groove is formed in the side face of the positioning fixing plate. During machining, a plurality of thrust bearing plates can be strung on the connecting shaft and are fixed by screwing the fixing nuts; and the plurality of thrust bearing plates are positioned through the positioning shaft. And through the arrangement of the open groove, the milling cutter can be ensured to have enough moving space so as to meet the machining requirement.

Description

Technical Field

[0001] This utility model belongs to the field of machining tooling technology, specifically relating to a machining tooling for irregular holes in a thrust bearing plate. Background Technology

[0002] The thrust bearing plate is a crucial component of the exhaust gas turbocharger. It not only bears axial thrust and limits axial movement, but also lubricates the shaft components. As a stator, the thrust bearing plate is fixed to the bearing housing by two pins. These two pin holes on the thrust bearing plate also serve as positioning holes for many other machining processes; however, these pin holes are not cylindrical holes, but rather U-shaped holes with rounded corners, such as... Figure 1 As shown. If the hole is directly milled into an irregular shape (U-shaped groove), it will affect the positioning accuracy of other processes. Therefore, it is first drilled into a cylindrical hole, and the opening is milled after the other processes are completed. If the opening is milled on a single piece, the positioning fixture design is complicated, the clamping speed is slow, and the processing efficiency is low. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a machining fixture for irregular holes in thrust bearing plates, which can improve machining efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A machining fixture for irregular holes in a thrust bearing plate includes a positioning and fixing plate and a connecting shaft. One end of the connecting shaft is fixedly connected to the positioning and fixing plate, and the other end of the connecting shaft is connected to a fixing nut via a thread. A positioning shaft is fixedly connected to the positioning and fixing plate. A clamping shaft coaxially arranged with the connecting shaft is fixed on the positioning and fixing plate. An opening groove is provided on the side of the positioning and fixing plate.

[0006] The positioning shaft is threadedly connected to the positioning fixing plate.

[0007] It also includes a fixing washer, which is sleeved on the outside of the connecting shaft and located inside the fixing nut.

[0008] It also includes a fixing sleeve, which is sleeved on the outside of the connecting shaft and located inside the fixing nut.

[0009] The positioning and fixing plate has two opening grooves on its side.

[0010] It also includes a connecting cone sleeve, which is inserted into the clamping shaft, and the clamping shaft is provided with a corresponding cone; a connecting bolt is fixedly connected to the clamping shaft, and the connecting cone sleeve is fixed by the connecting bolt.

[0011] It also includes a support assembly; the support assembly includes a magnetic base and a support base, the support base being connected to the magnetic base; a support sleeve is rotatably connected to the support base, and the support sleeve has a connection hole for insertion into a fixing nut.

[0012] The support base is slidably connected to the magnetic base; the magnetic base is connected to an adjusting screw by means of a thread, and the support base is supported by adjusting the adjusting screw.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] During machining, multiple thrust bearing plates can be strung together on the connecting shaft and secured by tightening the retaining nuts; the positioning shaft is used to position the multiple thrust bearing plates together. By setting open grooves, sufficient movement space for the milling cutter can be ensured to meet machining requirements.

[0015] It is equipped with a connecting cone sleeve, which can be replaced after long-term clamping to avoid clamping marks caused by prolonged use, thus affecting machining accuracy.

[0016] A support assembly is provided to support the fixing nut during processing, thereby improving the overall rigidity. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the usage state of this utility model in one direction;

[0019] Figure 3 This is a schematic diagram of the usage state of this utility model in another direction;

[0020] Figure 4 yes Figure 3 A partial sectional view of the structure shown;

[0021] Figure 5 This is a schematic diagram of the structure of the fixing sleeve of this utility model;

[0022] Figure 6 This is a schematic diagram of the support component of this utility model in use;

[0023] Figure 7 This is a schematic diagram of the structure of the support component of this utility model;

[0024] Figure 8 This is a schematic diagram of the thrust bearing plate.

[0025] Wherein: 1 is the positioning and fixing plate, 2 is the connecting shaft, 3 is the fixing nut, 4 is the positioning shaft, 5 is the clamping shaft, 6 is the opening groove, 7 is the fixing washer, 8 is the fixing sleeve, 9 is the connecting cone sleeve, 10 is the cone, 11 is the connecting bolt, 12 is the support assembly, 13 is the magnetic base, 14 is the support base, 15 is the support sleeve, 16 is the connecting hole, 17 is the guide rod, 18 is the adjusting screw, 19 is the thrust bearing plate, 20 is the U-shaped groove, and 21 is the positioning surface. Detailed Implementation

[0026] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0027] like Figure 1-8 As shown, a machining fixture for irregular holes in thrust bearing plates includes a positioning and fixing plate 1 and a connecting shaft 2. One end of the connecting shaft 2 is fixedly connected to the positioning and fixing plate 1, and the other end of the connecting shaft 2 is threadedly connected to a fixing nut 3. In use, multiple thrust bearing plates 19 are sequentially strung on the connecting shaft 2, and then the fixing nut 3 and the positioning and fixing plate 1 clamp each thrust bearing plate 19.

[0028] The bottom of the thrust bearing plate 19 has a flat surface, which is used as the positioning surface 21 in this fixture. The positioning shaft 4 is then fixedly connected to the positioning plate 1. When each thrust bearing plate 19 is strung on the connecting shaft 2, the outer surface of the positioning shaft 4 contacts the positioning surface 21, thereby achieving positioning.

[0029] A clamping shaft 5, coaxially arranged with the connecting shaft 2, is fixed on the positioning and fixing plate 1. The clamping shaft 5 is used to connect with the indexing chuck, that is, the clamping shaft 5 is clamped by the indexing chuck. An opening groove 6 is provided on the side of the positioning and fixing plate 1; the opening groove 6 can ensure that the milling cutter has enough machining space, thereby ensuring that the milling cutter can perform milling (machining U-shaped groove 20) on the last thrust bearing plate 19 located at the positioning and fixing plate 1.

[0030] Furthermore, the positioning shaft 4 and the positioning fixing plate 1 are preferably connected by a thread, with the positioning shaft 4 having a corresponding external thread and the positioning fixing plate 1 having a corresponding threaded hole.

[0031] Furthermore, to prevent the fixing nut 3 from damaging the thrust bearing plate 19 during the tightening process, a fixing washer 7 is also included. The fixing washer 7 is sleeved on the outside of the connecting shaft 2 and located inside the fixing nut 3.

[0032] Furthermore, in addition to using the fixing washer 7, a fixing sleeve 8 can also be used instead. Similarly, the fixing sleeve 8 is fitted over the connecting shaft 2 and located inside the fixing nut 3.

[0033] Furthermore, the thrust bearing plate 19 is designed with two U-shaped grooves 20; therefore, two corresponding open grooves 6 are provided on the side of the positioning and fixing plate 1. During machining, the indexing chuck is rotated to position the milling cutter above one of the open grooves 6 to machine the first U-shaped groove 20. After the first U-shaped groove 20 is machined, the indexing chuck is rotated again to position the milling cutter above the other open groove 6 to machine the second U-shaped groove 20.

[0034] Furthermore, it also includes a connecting tapered sleeve 9, which is inserted into the clamping shaft 5. The clamping shaft 5 is provided with a corresponding cone 10, and the connecting tapered sleeve 9 is provided with a corresponding tapered hole. A connecting bolt 11 is fixedly connected to the clamping shaft 5. The connecting bolt 11 passes through the connecting tapered sleeve 9 and is threadedly connected to the clamping shaft 5. The connecting tapered sleeve 9 can be fixed by tightening the connecting bolt 11.

[0035] With the above structural setup, the indexing chuck clamps the connecting cone sleeve 9; when too many are clamped, causing indentations on the connecting cone sleeve 9, the connecting bolt 11 can be removed and a new connecting cone sleeve 9 can be replaced.

[0036] Furthermore, during the aforementioned processing, one end of the entire assembly is suspended in mid-air; it can be supported using a small jack as needed, thereby increasing the overall rigidity. Of course, the following structural configuration is preferred:

[0037] It also includes a support assembly 12; the support assembly 12 includes a magnetic base 13 and a support base 14, the support base 14 being connected to the magnetic base 13; a support sleeve 15 is rotatably connected to the support base 14, and a connection hole 16 on the support sleeve 15 is inserted into the fixing nut 3.

[0038] In use, after clamping the clamping shaft 5 with the indexing chuck, insert the support sleeve 15 into the fixing nut 3; then, use the magnetic base 13 to attach the support assembly 12 to the machine tool for support. At the same time, the support sleeve 15 is rotatably connected to the support base 14, so the support sleeve 15 will not rotate in response to the rotation of the indexing chuck during the machining process.

[0039] Furthermore, the support base 14 and the magnetic base 13 are slidably connected, which can be achieved by the guide rod 17. One end of the guide rod 17 passes through the support base 14 and is fixedly connected to the magnetic base 13, and the guide rod 17 and the support base 14 are slidably connected. A protrusion is provided at the upper end of the guide rod 17 to prevent the support base 14 from sliding off the guide rod 17.

[0040] An adjusting screw 18 is threaded onto the magnetic base 13. The upper surface of the adjusting screw contacts the bottom of the support base 14, thus supporting the support base 14 by adjusting the adjusting screw 18. By rotating the adjusting screw 18, its extension length can be changed, thereby fine-tuning the height of the support base 14.

[0041] The above description only describes the preferred embodiments of the present invention, but the present invention is not limited to the above embodiments.

Claims

1. A machining fixture for irregular holes in a thrust bearing plate, characterized in that: It includes a positioning and fixing plate (1) and a connecting shaft (2). One end of the connecting shaft (2) is fixedly connected to the positioning and fixing plate (1), and the other end of the connecting shaft (2) is connected to a fixing nut (3) by a thread. A positioning shaft (4) is fixedly connected to the positioning and fixing plate (1). A clamping shaft (5) is fixedly arranged on the positioning and fixing plate (1) and coaxially with the connecting shaft (2). An opening groove (6) is provided on the side of the positioning and fixing plate (1).

2. The machining fixture for irregular holes in a thrust bearing plate according to claim 1, characterized in that: The positioning shaft (4) is threadedly connected to the positioning fixing plate (1).

3. The machining fixture for irregular holes in a thrust bearing plate according to claim 1, characterized in that: It also includes a fixing washer (7), which is sleeved outside the connecting shaft (2) and located inside the fixing nut (3).

4. The machining fixture for irregular holes in a thrust bearing plate according to claim 1, characterized in that: It also includes a fixing sleeve (8), which is sleeved on the outside of the connecting shaft (2) and located inside the fixing nut (3).

5. The machining fixture for irregular holes in a thrust bearing plate according to claim 1, characterized in that: The side of the positioning and fixing plate (1) is provided with two opening grooves (6).

6. The machining fixture for irregular holes in a thrust bearing plate according to claim 1, characterized in that: It also includes a connecting cone sleeve (9), which is inserted into the clamping shaft (5), and the clamping shaft (5) is provided with a corresponding cone (10); a connecting bolt (11) is fixedly connected to the clamping shaft (5), and the connecting cone sleeve (9) is fixed by the connecting bolt (11).

7. The machining fixture for irregular holes in a thrust bearing plate according to claim 1, characterized in that: It also includes a support assembly (12); the support assembly (12) includes a magnetic base (13) and a support base (14), the support base (14) being connected to the magnetic base (13); a support sleeve (15) is rotatably connected to the support base (14), and a connection hole (16) is provided on the support sleeve (15) for insertion into a fixing nut (3).

8. The machining fixture for irregular holes in a thrust bearing plate according to claim 7, characterized in that: The support base (14) is slidably connected to the magnetic base (13); the magnetic base (13) is connected by an adjusting screw (18) through a thread, and the support base (14) is supported by the adjusting screw (18).

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