Thrust bearing steel ball pressing tool

Abstract

The utility model discloses a thrust bearing steel ball pressing tool which can efficiently and stably install a steel ball in a thrust bearing oil hole of a turbocharger. Comprising a supporting part, a positioning part, a pressing part and a stamping part, and the supporting part comprises a tool body; the positioning part comprises a bearing positioning seat, the bearing positioning seat is fixed on the tool body, a bearing positioning hole and a positioning pin are arranged on the bearing positioning seat, the bearing positioning hole is used for vertically placing the thrust bearing, and the positioning pin is used for being inserted into the thrust bearing for positioning; the pressing part comprises a screw sleeve, the two sides of the screw sleeve are connected and fixed to the tool body through supports, a ball screw is arranged in the screw sleeve in a threaded fit mode, and a pressing block is arranged on a ball head of the ball screw in a matched mode and used for pressing the thrust bearing. The punching part comprises an upper plate, the upper plate is fixed to the top of the tool body, a guide sleeve is fixed to one end of the upper plate, a punch is arranged in the guide sleeve in a sliding fit mode in the vertical direction, and an opening used for giving way to the punch is formed above the bearing positioning hole.

Description

Technical Field

[0001] The utility model relates to the technical field of turbochargers, in particular to a tool for pressing steel balls of a thrust bearing. Background Art

[0002] As an important component of a marine diesel engine, which is the main power device of a ship, the technical level of a supercharger directly affects the working efficiency of the marine diesel engine. A thrust bearing is an important part of a supercharger product. As shown in Figure 1 , this part is located at the center of the supercharger, bears the axial thrust of the airflow acting on the rotor, and ensures the axial position of the rotor, which also plays a crucial role in the operation stability of the whole machine system.

[0003] To ensure the function of the thrust bearing in the supercharger system, the part structure is designed with a Φ3.1mm steel ball located in a Φ3mm oil hole to block the oil hole, so that the lubricating oil can form a cycle inside and outside the thrust bearing during the operation of the supercharger, playing a lubricating role and preventing dry friction on the surface of the part. The installation quality of the steel ball will directly affect the operation stability of the whole supercharger system. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a tool for pressing steel balls of a thrust bearing, which can efficiently and stably install the steel ball in the oil hole of the thrust bearing of a turbocharger.

[0005] The purpose of the utility model is realized as follows:

[0006] A tool for pressing steel balls of a thrust bearing includes a support part, a positioning part, a pressing part, and a stamping part.

[0007] The support part includes a tool body.

[0008] The positioning part includes a bearing positioning seat, which is fixed on the side wall of the tool body. The bearing positioning seat is provided with a bearing positioning hole and a positioning pin. The shape of the bearing positioning hole corresponds to that of the thrust bearing. The bearing positioning hole is used for vertically placing the thrust bearing, and the positioning pin is used for inserting and positioning on the thrust bearing to make the oil hole of the thrust bearing face upward.

[0009] The pressing part includes a screw sleeve. The two sides of the screw sleeve are respectively connected and fixed to the tool body through brackets. The brackets are located on both sides of the bearing positioning seat. The screw sleeve is internally threaded and cooperates with a ball head screw. One end of the ball head screw facing the tool body is a ball head. A pressing block is cooperated on the ball head of the ball head screw, and the pressing block is used for pressing the thrust bearing.

[0010] The stamping part includes an upper plate which is fixed to the top of the tool body. A guide bushing is fixed at one end of the upper plate. A punch is slidably fitted vertically inside the guide bushing. There is an opening above the bearing positioning hole for making way for the punch. The upper end of the punch is used to connect to a pressing device, and the punch is used to press the steel ball into the oil hole of the thrust bearing.

[0011] Preferably, a pressing plate is installed on the pressing block. The material of the pressing plate is a flexible material, and the pressing plate is used to contact the thrust bearing.

[0012] Preferably, a limit pin is arranged radially on the punch, and a relief groove is arranged axially on the guide bushing. The limit pin is fitted in the relief groove of the guide bushing. A stroke limit pin is vertically provided at the upper end of the upper plate, corresponding to the limit pin. The stroke limit pin is used to cooperate with the limit pin to limit the stroke of the punch.

[0013] Preferably, the punch is a flat-mouth punch, and the flat-mouth end of the flat-mouth punch is used to press the steel ball.

[0014] Preferably, a dial gauge holder is fixed on the end face of the upper plate. A dial gauge is installed on the dial gauge holder. The measuring end of the dial gauge corresponds to the punch, and the dial gauge is used to measure the stroke of the punch.

[0015] Preferably, a handle is provided at the end of the ball head screw facing away from the tool body.

[0016] Due to the adoption of the above technical solutions, the utility model has the following beneficial effects:

[0017] This tool can be used in cooperation with a radial drill or other equipment or mechanisms that can achieve a pressing method. The tool body is fixed on the workbench, and the steel ball can be efficiently and stably installed in the oil hole of the thrust bearing of the turbocharger. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is the part drawing of the thrust bearing;

[0019] Figure 2 is the allowance of the part before installation;

[0020] Figure 3a is the front view schematic diagram of the utility model;

[0021] Figure 3b is the front view schematic diagram of the utility model;

[0022] Figure 3c is the front view schematic diagram of the utility model;

[0023] Figure 4 is the structural schematic diagram of the screw sleeve;

[0024] Figure 5 is the structural schematic diagram of the bracket;

[0025] Figure 6 It is a schematic structural diagram of a tool body;

[0026] Figure 7 It is a schematic structural diagram of an upper plate;

[0027] Figure 8 It is a schematic structural diagram of a guide bushing;

[0028] Figure 9 It is a schematic structural diagram of a bearing positioning seat;

[0029] Figure 10 It is a schematic structural diagram of a pressing plate;

[0030] Figure 11 It is a schematic structural diagram of a pressing block;

[0031] Figure 12 It is a schematic structural diagram of a ball head screw;

[0032] Figure 13 It is a schematic structural diagram of a handle;

[0033] Figure 14 It is a schematic structural diagram of a positioning pin;

[0034] Figure 15 It is a schematic structural diagram of a retaining piece;

[0035] Figure 16 It is a schematic structural diagram of a flat mouth punch;

[0036] Figure 17 It is a schematic structural diagram of a limit pin;

[0037] Figure 18 It is a schematic structural diagram of a dial gauge stand. Detailed implementation manners

[0038] A tool for pressing steel balls of a thrust bearing includes a supporting part, a positioning part, a pressing part, and a stamping part. The supporting part includes a tool body 6.

[0039] The positioning part includes a bearing positioning seat 14. The bearing positioning seat 14 is fixed on the side wall of the tool body 6. The bearing positioning seat 14 is provided with a bearing positioning hole and a positioning pin 19. The shape of the bearing positioning hole corresponds to that of the thrust bearing. The bearing positioning hole is used for vertically placing the thrust bearing, and the positioning pin 19 is used for inserting and positioning on the thrust bearing to make the oil hole of the thrust bearing face upward.

[0040] The pressing part includes a screw sleeve 1. The two sides of the screw sleeve 1 are respectively connected and fixed to the tool body 6 through brackets 2. The brackets 2 are located on both sides of the bearing positioning seat 14. A ball head screw 17 is in threaded fit with the inner thread of the screw sleeve 1. One end of the ball head screw 17 facing the tool body 6 is a ball head. A pressing block 16 is fitted on the ball head of the ball head screw 17. The pressing block 16 is used to press the thrust bearing. A handle 18 is arranged at the end of the ball head screw 17 facing away from the tool body 6. A pressing plate 15 is installed on the pressing block 16. The material of the pressing plate 15 is a flexible material. The pressing plate 15 is used to contact the thrust bearing.

[0041] The stamping part includes an upper plate 7. The upper plate 7 is fixed to the top of the tool body 6. A guide sleeve 8 is fixed to one end of the upper plate 7. A punch slides vertically in the guide sleeve 8 in a sliding fit. An opening for making way for the punch is provided above the bearing positioning hole. The upper end of the punch is used to connect to a pressing device. The punch is used to press the steel ball into the oil hole of the thrust bearing.

[0042] A limit pin 24 is arranged radially on the punch. A relief groove is arranged axially on the guide sleeve 8. The limit pin 24 is fitted in the relief groove of the guide sleeve 8. A stroke limit pin 23 is vertically arranged at the upper end of the upper plate 7. The stroke limit pin 23 corresponds to the limit pin 24. The stroke limit pin 23 is used to cooperate with the limit pin 24 to limit the stroke of the punch. The punch adopts a flat-mouth punch 22. The flat-mouth end of the flat-mouth punch 22 is used to press the steel ball. A dial gauge base 26 is fixed on the end face of the upper plate 7. A dial gauge 25 is installed on the dial gauge base 26. The measuring end of the dial gauge 25 corresponds to the punch. The dial gauge 25 is used to measure the stroke of the punch.

[0043] Specifically:

[0044] A tool for pressing steel balls into a thrust bearing can efficiently and stably install Φ3.1mm steel balls into a Φ3mm oil hole. This tool is mainly divided into four parts: a support part, a pressing part, a positioning part, and a stamping part.

[0045] The support part: includes a tool body 6, which mainly plays a supporting role and supports and fixes various components.

[0046] The pressing part: consists of a screw sleeve 1, brackets 2, a pressing plate 15, a pressing block 16, a ball head screw 17, and a handle 18, and is mainly used to press the thrust bearing. After the brackets 2 and the screw sleeve 1 are welded, they are connected to the tool body 6 with bolts 3 (M8×20) and washers 4. The ball head screw 17 and the handle 18 are welded together. The pressing block 16 is connected to the bracket 2 with the ball head screw 17. The pressing plate 15 is a free part. The stepped hole of the pressing plate fits with the outer circle of the pressing block 16.

[0047] Positioning part: It is composed of bearing positioning seat 14, positioning pin 19 and baffle 20, which is mainly used to position the thrust bearing in the tool body. The baffle 20 is installed on the bearing positioning seat 14 with screw 21 (M4×6); the outer circle of the positioning pin 19 matches with the Φ8+0.015 0 hole on the bearing positioning seat 14. Note that the protruding height should be controlled to 4mm during installation, which is used to position the thrust bearing; the outer circle of the small end of the bearing positioning seat 14 matches with the Φ30+0.021 0 hole of the tool body 16, and the position relationship between it and the tool body 6 is determined by the pin 9 (A10×40), and then connected and fixed on the tool body with screw 10 (M10×90).

[0048] Stamping part: It is composed of an upper plate 7, a guide sleeve 8, a flat punch 22, a stroke limiting pin 23 (A6×26), a limit pin 24, a dial indicator 25 (0-3mm), and a dial seat 26, and is used for stamping and installing a steel ball. The upper plate 7 is fixed to the tool body 6 by a pin 11 (A10×30) (the Φ28+0.021 0 inner hole of the upper plate 7 is 26.95±0.05mm from the end face of the tool body 6), and then fixed to the tool body 6 by a bolt 12 (M10×60) and a washer 13; the Φ28-0.007-0.02 outer circle of the guide sleeve 8 is matched with the Φ28+0.0210 inner hole of the upper plate 7 and then fixed to the upper plate 7 by a screw 5 (M6×50); the dial indicator 25 (0-3mm) is installed on the dial base 26 by a screw 28 (M4×6), and the dial base 26 is then installed on the upper plate 7 by a screw 27 (M4×6); the limit pin 24 is fixed to the Φ6+0.012 on the flat punch 0 hole (note that the flat surface of the pin faces the flat end of the flat punch), the Φ16-0.016-0.034 outer circle of the flat punch cooperates with the Φ16+0.018 0 inner hole of the guide sleeve 8, and at the same time, the limit pin 24 is placed in the 6.05+0.05 0 make way groove of the guide sleeve; the stroke limiting pin 23 (A6×26) cooperates with the Φ6+0.012 0 hole of the upper plate 7. During assembly, the end face of the stroke limiting pin 23 (A6×26) is so that the flat punch 22 punches the steel ball into a depth of 0.77±0.05mm that the limit pin 24 just touches the end face of the stroke limiting pin 23 (A6×26).

[0049] This tool can be used in conjunction with a Z35 radial drilling machine or other equipment or mechanisms that can achieve a clamping method. Fix the tool body on the workbench, put the thrust bearing into the Φ72.5 inner hole (bearing positioning hole) of the bearing positioning seat 14, and the Φ4mm hole on the end face of the workpiece and the Φ4-0.01-0.03mm outer circle of the positioning pin 19 match the limited position (note that the thrust bearing is processed with an allowance at this time, such as Figure 2As shown, at this time, the oil hole of the thrust bearing Φ3mm is vertical. Rotate the handle 18 to drive the ball head screw 17 and the pressing block 16 to make the pressing plate 15 press the thrust bearing. Place the Φ3.1mm steel ball at the orifice of the Φ3mm hole of the thrust bearing. The flat-nose punch 22 slides freely and contacts the steel ball. Adjust the pointer of the dial indicator 25 to zero. Apply pressure to the flat-nose punch 22 through the spindle head of the Z35 radial drilling machine to press the Φ3.1mm steel ball into the Φ3mm oil hole until the flat surface of the limit pin 24 just touches the end face of the positioning stroke limit pin 23. At this time, the dial indicator 25 shows 2.68 ± 0.05mm, then the pressing-in dimension of the steel ball is 0.77 ± 0.05mm (from the outer circle of the Φ3.1mm steel ball to the outer circle of Φ72.5 + 0.1 0).

[0050] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A thrust bearing steel ball pressing tool, characterized in that: It includes supporting part, positioning part, pressing part and stamping part. The support portion includes a tool body; The positioning part includes a bearing positioning seat, which is fixed on the side wall of the tool body. The bearing positioning seat is provided with a bearing positioning hole and a positioning pin. The shape of the bearing positioning hole corresponds to the thrust bearing. The bearing positioning hole is used to vertically place the thrust bearing. The positioning pin is used to be inserted into the thrust bearing for positioning so that the oil hole of the thrust bearing faces upward. The clamping part includes a screw sleeve, and the two sides of the screw sleeve are respectively connected and fixed to the tool body through brackets. The brackets are located on both sides of the bearing positioning seat. The internal thread of the screw sleeve is matched with a ball head screw. The end of the tool body facing the ball head screw is a ball head. The ball head of the ball head screw is matched with a pressure block, and the pressure block is used to clamp the thrust bearing; The stamping part includes an upper plate, which is fixed on the top of the tool body. A guide sleeve is fixed at one end of the upper plate. A punch is vertically slidably fitted in the guide sleeve. An opening for making way for the punch is provided above the bearing positioning hole. The upper end of the punch is used to connect a pressure device, and the punch is used to press the steel ball into the oil hole of the thrust bearing.

2. A thrust bearing steel ball pressing tool according to claim 1, characterized in that: A pressing plate is installed on the pressing block. The material of the pressing plate is a flexible material and is used for contacting with the thrust bearing.

3. A thrust bearing steel ball pressing tool according to claim 1, characterized in that: A limit pin is radially arranged on the upper edge of the punch, and a clearance groove is axially arranged on the guide sleeve. The limit pin fits in the clearance groove of the guide sleeve. A stroke limiting pin is vertically arranged on the upper end of the upper plate. The stroke limiting pin corresponds to the limit pin. The stroke limiting pin is used to cooperate with the limit pin to limit the stroke of the punch.

4. A thrust bearing steel ball pressing tool according to claim 3, characterized in that: The punch is a flat punch, and the flat end of the flat punch is used to apply pressure to the steel ball.

5. The thrust bearing steel ball pressing tool according to claim 3, characterized in that: A dial base is fixed on the end surface of the upper plate, a dial indicator is installed on the dial base, the measuring end of the dial indicator corresponds to the punch, and the dial indicator is used to measure the stroke of the punch.

6. A thrust bearing steel ball pressing tool according to claim 1, characterized in that: A handle is arranged on one end of the ball screw facing away from the tool body.

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