CN203003642U - A kind of double row bearing raceway grinding processing equipment - Google Patents

Abstract

A double-row bearing raceway grinding processing device comprises a rack, a main shaft rotating mechanism and a grinding mechanism, wherein the main shaft rotating mechanism and the grinding mechanism are installed on the rack, the main shaft rotating mechanism is provided with a main shaft and a workpiece clamp, the grinding mechanism can axially displace relative to the main shaft along the rack, the grinding mechanism is provided with a grinding host and a displacement limiting mechanism, the grinding host is provided with a grinding wheel, the grinding host is provided with a left supporting plate and a right supporting plate, the displacement limiting mechanism comprises a limiting block located between the left supporting plate and the right supporting plate, and the displacement limiting mechanism is further provided with a cushion block located between the left supporting plate or the right supporting plate and the limiting block. The utility model discloses an equipment does not need the conversion processing benchmark when realizing the different channels of grinding, improves the precision and the production efficiency of product.

Description

A kind of double row bearing raceway grinding processing equipment

(1) Technical field

The utility model relates to a grinding and processing equipment for a double-row bearing raceway.

(2) Background technology

The double groove (two grooves) processing of the inner and outer rings of double row ball bearings is a key process in the production of double row ball bearings. In order to ensure the working performance of double row ball bearings, the accuracy of the distance between the two grooves of the inner and outer rings of the ball bearing (groove center distance) and the parallelism of the grooves to the reference end face have a great influence on the performance of the product after assembly and assembly. .

At present, when processing the grooves of the inner and outer rings of double-row ball bearings in the prior art, the equipment shown in Figure 1 and Figure 2 is used for processing. The equipment includes a frame, a grinding mechanism and a spindle rotation mechanism. The grinding mechanism It has a machine tool guide rail, a supporting plate, a displacement limiting mechanism and a grinding main engine. The machine tool guide rail and the displacement limiting mechanism are installed on the frame, the supporting plate is arranged on the machine tool guiding rail, and the grinding main engine is fixed on the supporting plate. The main machine has a grinding wheel for grinding workpieces. The main shaft rotation mechanism has a rotatable main shaft and a workpiece fixture. The supporting plates are divided into a left supporting plate and a right supporting plate respectively fixed at the left and right ends of the bottom of the grinding main machine. The displacement limiting mechanism is a limiting block located between the left supporting board and the right supporting board. The processing process is as follows: 1) Adjust the workpiece fixture first, and install the bearing ring to be ground on the workpiece fixture; 2) Grind the first groove. Take one end face of the bearing ring to be ground (marked as A in the figure) as a reference, move the grinding host to the position where the limit block withstands, obtain the first channel feed position, and process the first channel. 3) Grind the second channel. After the grinding wheel is abdicated, change the direction of the bearing ring to be ground and use the other end face of the bearing ring to be ground (marked as B in the figure) as a reference, move the grinding host to the position where the limit block is supported, and obtain Second channel feed position, machining the second channel. 4) The grinding wheel abdicates to complete the processing.

The double-row bearings are produced by the above-mentioned equipment and process, and the A and B end faces of the bearing ring to be ground are positioned twice, and the left and right grooves are processed twice. By ensuring the total width of the ring and the distance between each groove and the near end surface The accuracy of the distance between the two channels is guaranteed. As a result, the following defects arise: 1. When grinding different grooves, the machining datum needs to be changed, which will cause the machining datum of one of the grooves to be inconsistent with the bearing installation datum, and there will be cumulative errors such as size and parallelism, which will affect the performance of the product after assembly. 2. The workpiece is clamped repeatedly, and the efficiency is low.

(3) Contents of the invention

The purpose of this utility model is to provide a double-row bearing raceway grinding processing equipment, which does not need to change the processing standard when grinding different channels, improves the accuracy of the product, and solves the problem of repeated clamping of the workpiece and low efficiency. .

In order to achieve the above object, the utility model adopts the following technical solutions:

A double-row bearing raceway grinding equipment includes a frame, a main shaft rotation mechanism and a grinding mechanism. The main shaft rotation mechanism is installed on the frame and has a rotatable main shaft and a workpiece fixture. The grinding mechanism It is installed on the frame and can be axially displaced relative to the main shaft along the frame. The grinding mechanism has a grinding main machine and a displacement limiting mechanism. The grinding main machine has a grinding wheel for grinding workpieces. There are left and right supporting plates at the left and right ends of the bottom of the host, and the displacement limiting mechanism includes a limiting block located between the left and right supporting plates. It is characterized in that: the displacement limiting mechanism also The utility model comprises a spacer which is located between the left support plate or the right support plate and the limit block and can be withdrawn therefrom, and which is closely attached to the limit block.

The utility model realizes that it is not necessary to change the processing standard when grinding different grooves, improves the precision of the product, solves the problem of repeated clamping of the workpiece at the same time, and improves the production efficiency.

The utility model can be improved by following scheme:

The left supporting board and the right supporting board are respectively provided with adjustable length positioning pins facing one end surface of the limiting block.

The width of the pad is equal to the center distance between the two channels or the difference between the feeding distance of the grinding wheel when the two channels are respectively ground.

An oil cylinder is provided on the frame, and the pad is installed on the pushing shaft of the oil cylinder.

The workpiece fixture includes an electromagnetic centerless fixture connected to the main shaft and an eccentric fixture installed on the machine frame.

(4) Description of drawings

Fig. 1 is a schematic diagram of the first groove processed by existing equipment for producing double row ball bearings;

Figure 2 is a schematic diagram of the existing equipment for producing double row ball bearings when processing the second channel;

Fig. 3 is the schematic diagram when the equipment for producing double row ball bearings of the present invention processes the first channel;

Fig. 4 is the schematic diagram when the equipment for producing double row ball bearings of the present invention processes the second channel;

Fig. 5 is a schematic diagram of the eccentric fixture in contact with the bearing ring to be ground and providing support and positioning for it.

(5) Specific implementation methods

A double-row bearing raceway grinding equipment as shown in FIGS. 3 to 5 includes a frame 1 , a main shaft rotation mechanism 3 and a grinding mechanism 2 .

Described main shaft rotation mechanism 3 is installed on the frame 1 and has a rotatable main shaft 31 and workpiece clamp, and this workpiece clamp comprises electromagnetic centerless clamp 32 and eccentric clamp 33, and electromagnetic centerless clamp 32 is connected on the described main shaft 31 and follows The main shaft 31 rotates together. The electromagnetic centerless fixture 32 is energized and magnetically conductive, and the bearing ring 8 to be ground can be slightly eccentrically adsorbed on the end surface of the electromagnetic centerless fixture 31 . A support seat 33-1 is provided on the frame 1, and the eccentric clamp 33 is fixed on the support seat 33-1 and contacts the bearing ring 8 to be ground to provide support and positioning for it.

The grinding mechanism 2 is installed on the frame 1 and can be axially displaced relative to the main shaft 31 along the frame 1. The grinding mechanism 2 has a grinding host 23 and a displacement limiting mechanism. The main engine 23 has a grinding wheel 23-1 for grinding workpieces, and the left and right supporting plates 22-1 and 22-2 are provided at the left and right ends of the bottom of the grinding main engine 23, and the displacement limiting mechanism includes a 22-1 and the spacer 41 between the right supporting plate 22-2. The left supporting plate 22-1 and the right supporting plate 22-2 are each provided with a positioning pin 42 of adjustable length towards the limit block 41. When the grinding wheel 23-1 is fed, the positioning on the right supporting plate 22-2 The pin 42 withstands the limiting block 41, and when the emery wheel 23-1 retreats, the positioning pin 42 on the left supporting plate 22-1 withstands the limiting block 41.

The grinding mechanism 2 also includes a spacer 51 that is located between the left pallet 22-1 or the right pallet 22-2 and the limit block 41 and can be withdrawn therefrom, and is close to the limit block 41. In this embodiment, the cushion block 51 is located between the right supporting plate 22 - 2 and the limiting block 41 . The spacer 51 is installed on the push shaft 52 of an oil cylinder 5 , and the oil cylinder 5 is installed on the frame 1 . The spacer 51 is made of cemented carbide and processed by precision grinding to ensure that the width of the spacer 51 is equal to the distance between the centers of the two channels or the difference in the feed distance of the grinding wheel 23-1 when grinding the two channels respectively.

A grinding process of a double row bearing raceway of the present invention comprises the following steps:

1) Adjust the workpiece fixture, and install the bearing ring 8 to be ground on the workpiece fixture.

2) Grind the first channel. The above-mentioned limit block 41 is withdrawn between the right supporting plate 22-2 and the limit block 41, and with one end surface of the bearing ring 8 to be ground as a reference, the grinding host 23 moves to the positioning pin 42 to withstand The limit block 41 (Fig. 3) obtains the feed position of the first channel and processes the first channel.

3) Grind the second channel. The pad 51 extends out to one side of the limit block 41 along with the push shaft 52 of the oil cylinder 5 during the abdication process of the grinding wheel 23-1 and sticks to it. When the grinding wheel 23-1 is fed again, it is moved to the The positioning pin 42 bears against the cushion block 51 (Fig. 4), and the second groove is processed after obtaining the feeding position of the second groove.

4) The grinding wheel 23-1 abdicates to complete the processing.

The above-mentioned embodiment is the preferred embodiment of the present utility model, but the embodiment of the present utility model is not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present utility model are all All equivalent replacement methods are included in the protection scope of the present utility model.

Claims (5)

1. A double-row bearing raceway grinding device, comprising a frame, a main shaft rotation mechanism and a grinding mechanism, the main shaft rotation mechanism is installed on the frame and has a rotatable main shaft and a workholding fixture, the grinding The grinding mechanism is installed on the frame and can move axially along the frame relative to the main shaft. The grinding mechanism has a grinding main machine and a displacement limiting mechanism. The grinding main machine has a grinding wheel for grinding workpieces. There are left and right supporting plates at the left and right ends of the bottom of the grinding machine, and the displacement limiting mechanism includes a limiting block located between the left and right supporting plates, which is characterized in that: the displacement limiting The mechanism also includes a cushion block which is located between the left or right supporting plate and the limiting block and can be withdrawn therefrom, and which is closely attached to the limiting block. 2 . The double row bearing raceway grinding equipment according to claim 1 , wherein the left and right supporting plates are respectively provided with adjustable length positioning pins facing one end surface of the limiting block. 3 . 3. A double row bearing raceway grinding equipment according to claim 1, characterized in that: the width of the spacer is equal to the center distance between the two channels or the difference between the feed distance of the grinding wheel when grinding the two channels respectively . 4. A double-row bearing raceway grinding equipment according to any one of claims 1 to 3, characterized in that: the frame has an oil cylinder, and the pad is installed on the push shaft of the oil cylinder. 5 . A double row bearing raceway grinding equipment according to claim 4 , wherein the workpiece fixture comprises an electromagnetic centerless fixture coupled to the main shaft and an eccentric fixture mounted on the frame. 6 .

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