Inner ball cage raceway grinding machine

Abstract

The utility model discloses an inner ball cage raceway grinding machine which is characterized in that the inner ball cage raceway grinding machine comprises a base, a seat body I is fixed on the base, a vertical guide rail is fixed above the seat body I, the vertical guide rail comprises a fixed part and a movable part, a lengthened seat is arranged on the movable part, a grinding tool and an electric spindle are fixed on the lengthened seat, and the electric spindle provides power for the grinding tool. A cross-shaped guide rail is further fixed to the base, a base body II is fixed to the movable end of the cross-shaped guide rail, a rotating disc is fixed to the upper portion of the base body II, a chuck is fixed to the movable end of the rotating disc through a connecting plate, and the chuck is located below the lengthened base. The grinding tool comprises a rod body, an input shaft and an output shaft are installed at the two ends of the rod body respectively through bearings, an input connector is arranged at one end of the input shaft, the input shaft is connected with the motorized spindle through the input connector, a grinding wheel is installed at one end of the output shaft, and the input shaft is connected with the output shaft through a transmission assembly. According to the transmission assembly, belt wheels are arranged in the middle of the input shaft and the middle of the output shaft and are in transmission connection through a belt.

Description

Technical Field

[0001] The technical solution relates to a mechanical processing machine tool, in particular to an inner ball cage raceway grinder. Background Art

[0002] As we all know, the car's ball joint, also known as the "constant velocity joint", is a key component in the vehicle's transmission system. It is mainly used to connect the power transmission between the engine and the drive wheel to ensure that during the driving process of the car, even if there is an angle change between the wheel and the drive shaft, the power can be transmitted smoothly and accurately.

[0003] The ball cage shell (referred to as the ball cage shell) is one of the important components. As shown in the attached figure, it has multiple raceways (or ballways) inside. The rollers (or ball wheels) of the universal joint need to roll in the raceways. The inner ball cage is an important component related to automobile safety. The matching requirements between the rollers and the raceways are very high. Limited by the process precision, there are certain processing errors in the universal joint and the ball cage shell, which makes it difficult to put the rollers into the raceways at the same time after the universal joint is assembled. There are two solutions, namely, grinding the raceways wider or grinding the rollers smaller. Due to the narrow rollers and the difficulty of grinding, the method chosen by enterprises is usually grinding the rollers smaller. Also limited by the processing precision, the rollers after grinding are difficult to be consistent. The final feedback to the inner ball cage product is that the universal rotation is not smooth enough and the product quality is not high. Therefore, what the enterprise needs is a grinder that can grind the raceways efficiently and accurately. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an inner ball cage raceway grinder which is convenient for grinding the raceway of a ball cage shell, thereby solving the technical problem of lack of suitable processing equipment. At the same time, the grinder also has the characteristics of good stability, safety, high efficiency and good consistency.

[0005] The inner ball cage raceway grinder is characterized in that it includes a base, a base body I is fixed on the base, a vertical guide rail is fixed above the base body I, the vertical guide rail includes a fixed part and a movable part, an extended seat is provided on the movable part, a grinding tool and an electric spindle are fixed on the extended seat, the electric spindle provides power for the grinding tool, a cross guide rail is also fixed on the base, a base body II is fixed on the movable end of the cross guide rail, a rotating disk is fixed above the base body II, a chuck is fixed to the movable end of the rotating disk through a connecting plate, and the chuck is located below the extended seat.

[0006] The vertical guide rail is an integrated vertical guide rail slide, or a longitudinally arranged linear guide rail, and the extended seat is fixed on a slide block of the guide rail so that the extended seat slides up and down as a whole.

[0007] The cross guide rail is a finished integrated cross guide rail, or is composed of mutually perpendicular linear guide rails.

[0008] The grinding tool comprises a rod body, with an input shaft and an output shaft respectively mounted on both ends of the rod body through bearings, one end of the input shaft is provided with an input joint and connected to the electric spindle through the input joint, one end of the output shaft is mounted with a grinding wheel, and the input shaft and the output shaft are connected through a transmission assembly.

[0009] The transmission assembly means that pulleys are provided in the middle of the input shaft and the output shaft, and are connected through belt transmission.

[0010] This technical solution achieves the following technical effects: 1. Product quality is improved. The previous method of grinding universal joint rollers is abandoned, and the ball cage raceway is ground. The grinding cost is low and the efficiency is high. The raceway ground by the machine tool has good consistency, and the product is smoother to use. 2. The matching range is wide and the control is more precise. Products of different sizes and models can be clamped through the clamping of the chuck, the rotation of the rotating disk, and the coordinate control of the cross guide. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a main structural schematic diagram of the utility model;

[0012] Figure 2 It is a left-side structural schematic diagram of the utility model;

[0013] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0014] Figure 4 It is a schematic diagram of the cross-sectional structure of the abrasive tool of the utility model;

[0015] Figure 5 It is a three-dimensional structural schematic diagram of the product processed by the utility model.

[0016] Explanation of the reference numerals: 1 extended seat (vertical guide rail extended seat), 2 vertical guide rail, 3 seat body I (vertical guide rail connecting base), 4 base, 5 cross guide rail, 6 seat body II (rotating disk connecting seat), 7 rotating disk, 8 connecting plate, 9 chuck, 10 grinding tool, 10-1 rod body, 10-2 input shaft, 10-3 pulley, 10-4 grinding wheel, 10-5 input joint, 10-6 belt, 10-7 output shaft, 12 electric spindle, 13 product, 13-1 raceway. DETAILED DESCRIPTION

[0017] Embodiment 1, inner ball cage raceway grinder, characterized in that it comprises a base 4, on which a base body Ⅰ3 is fixed, a vertical guide rail 2 is fixed above the base body Ⅰ, the vertical guide rail comprises a fixed part and a movable part, an extended seat 1 is provided on the movable part, a grinding tool 10 and an electric spindle 12 are fixed on the extended seat, the electric spindle provides power for the grinding tool, a cross guide rail 5 is also fixed on the base, a base body Ⅱ 6 is fixed at the movable end of the cross guide, a rotating disk 7 is fixed above the base body Ⅱ, a chuck 9 is fixed to the movable end of the rotating disk through a connecting plate 8, and the chuck is located below the extended seat.

[0018] The vertical guide rail is an integrated vertical guide rail slide, or a longitudinally arranged linear guide rail, and the extended seat is fixed on a slide block of the guide rail so that the extended seat slides up and down as a whole.

[0019] The cross guide rail is a finished integrated cross guide rail, or is composed of mutually perpendicular linear guide rails.

[0020] The grinding tool 10 includes a rod body 10-1, and an input shaft 10-2 and an output shaft 10-7 are respectively installed at both ends of the rod body through bearings. One end of the input shaft is provided with an input connector 10-5, and is connected to the electric spindle through the input connector. A grinding wheel 10-4 is installed at one end of the output shaft, and the input shaft and the output shaft are connected through a transmission assembly.

[0021] The transmission assembly refers to that a pulley 10-3 is provided in the middle of the input shaft and the output shaft, and the two shafts are connected through a belt 10-6.

[0022] The chuck is a hydraulic three-jaw chuck.

[0023] The principle of this device is as follows:

[0024] Before processing, use the chuck to clamp the product (ball cage shell) so that the product opening faces upward, and install the grinding wheel that matches the ball cage raceway on the mold at the same time; then, use the cross guide to control the horizontal coordinates of the product, and use the rotating disk to rotate the product angle so that the ball cage raceway is directly under the grinding wheel;

[0025] During processing, start the vertical guide rail to move the extension seat downward, and the input shaft of the mold rotates under the drive of the electric spindle. The input shaft drives the output shaft to rotate through the belt, so that the grinding wheel rotates to work. During the downward movement of the extension seat, the grinding wheel grinds the ball cage raceway 13-1. After grinding, the extension seat moves upward to remove the grinding wheel, and the rotating disk rotates 120 degrees to make the second ball cage raceway located under the grinding wheel. Repeat the above grinding operation. After the grinding of the three ball cage raceways is completed, release the chuck and replace the product.

[0026] This technical solution achieves the following technical effects:

[0027] The product quality is improved by abandoning the previous method of grinding the universal joint roller and adopting the grinding of the ball cage raceway. The grinding cost is low and the efficiency is high. In addition, the raceway polished by the machine tool has good consistency, and the product is smoother and more fluent in use.

[0028] The matching range is wide and the control is more precise. Through the clamping of the chuck, the rotation of the rotating disk, and the coordinate control of the cross guide, products of different sizes and models can be clamped, so that the product raceway is accurately located under the grinding wheel, and processing can be carried out by replacing the matching grinding wheel.

Claims

1. The inner ball cage raceway grinder is characterized by: It includes a base, a base body I is fixed on the base, a vertical guide rail is fixed above the base body I, the vertical guide rail includes a fixed part and a movable part, an extension seat is provided on the movable part, a grinding tool and an electric spindle are fixed on the extension seat, the electric spindle provides power for the grinding tool, a cross guide rail is also fixed on the base, a base body II is fixed on the movable end of the cross guide rail, a rotating disk is fixed above the base body II, a chuck is fixed on the movable end of the rotating disk through a connecting plate, and the chuck is located below the extension seat.

2. The inner ball cage raceway grinding machine according to claim 1, characterized in that: The vertical guide rail is a linear guide rail arranged longitudinally, and the extended seat is fixed on a slide block of the guide rail so that the extended seat can slide up and down as a whole.

3. The inner ball cage raceway grinding machine according to claim 1, characterized in that: The cross guide rail is composed of mutually perpendicular linear guide rails.

4. The inner ball cage raceway grinding machine according to claim 1, characterized in that: The grinding tool comprises a rod body, with an input shaft and an output shaft respectively mounted on both ends of the rod body through bearings, one end of the input shaft is provided with an input joint and connected to the electric spindle through the input joint, one end of the output shaft is mounted with a grinding wheel, and the input shaft and the output shaft are connected through a transmission assembly.

5. The inner ball cage raceway grinding machine according to claim 4, characterized in that: The transmission assembly means that pulleys are provided in the middle of the input shaft and the output shaft, and are connected through belt transmission.

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