CN212094695U

CN212094695U - Device for machining steering gear rack tooth profile by using single diamond disc for gear grinding

Info

Publication number: CN212094695U
Application number: CN202020143486.5U
Authority: CN
Inventors: 汤晹
Original assignee: Shanghai Koal Automobile Technology Development Co ltd
Current assignee: Shanghai Koal Automobile Technology Development Co ltd
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2020-12-08
Anticipated expiration: 2030-01-22

Abstract

The utility model relates to an use device of single disc buddha's warrior attendant piece gear grinding processing steering gear rack tooth type, including single disc buddha's warrior attendant piece (1), emery wheel (2), anchor clamps (3) and portable workstation (4), single disc buddha's attendant piece (1) and anchor clamps (3) set up respectively on portable workstation (4), emery wheel (2) be located portable workstation (4) one side. Compared with the prior art, the utility model has the advantages of the precision is high, with low costs.

Description

Device for machining steering gear rack tooth profile by using single diamond disc for gear grinding

Technical Field

The utility model belongs to the technical field of automobile parts and specifically relates to an use device of single diamond disc gerar grinding processing steering gear rack profile.

Background

The steering gear is a mechanical device which is driven by people or unmanned and has a power source, so that the steering gear randomly changes the running route and direction during running. A rack and pinion steering gear, which is the most common type of steering gear, has a basic structure of a pair of pinion gears and a rack gear which are engaged with each other. When the steering shaft drives the pinion to rotate, the rack moves linearly. Sometimes, the steering wheel can be steered by directly driving the tie rod by the rack. This is therefore the simplest steering gear. The rack and pinion steering gear has the advantages of simple structure, low cost, sensitive steering and small volume, and can directly drive the tie rod, thereby being widely applied to automobiles at present.

In the domestic automobile steering gear market, along with the market competition of the steering gear, the steering gear enterprise has shorter and shorter development period of new products, and simultaneously needs to ensure the requirement of high-precision tooth shapes.

SUMMERY OF THE UTILITY MODEL

The present invention aims to overcome the above-mentioned drawbacks of the prior art and to provide a low-cost device for machining the rack profile of a steering gear by grinding a single diamond disc.

The purpose of the utility model can be realized through the following technical scheme: the device for machining the rack tooth profile of the steering gear by using the single diamond disc for gear grinding is characterized by comprising the single diamond disc, a grinding wheel, a clamp and a movable workbench, wherein the single diamond disc and the clamp are respectively arranged on the movable workbench, and the grinding wheel is positioned on one side of the movable workbench.

The single diamond disc is fixed on the rotating shaft of the first motor.

The grinding wheel is fixed on the second motor rotating shaft, the second motor rotating shaft is of a telescopic structure, and the telescopic length of the rotating shaft is adjusted according to the processing station.

The second motor is arranged on the support frame, and the support frame drives the grinding wheel to move up and down in the Y direction and move back and forth in the Z horizontal direction.

The clamp comprises a base, a positioning block and a pressing block, wherein the positioning block and the pressing block are arranged on the base in a matched mode, a clamping groove is formed between the positioning block and the pressing block, a hydraulic pull rod is arranged below the pressing block, and a workpiece to be machined is arranged in the clamping groove and is tensioned downwards through the hydraulic pull rod to enable the pressing block to compress the workpiece to be machined.

The locating piece be rectangular form, its inboard is equipped with the recess, this recess comprises bottom surface, side and the transition inclined plane of connecting bottom surface and side, the side is 6 ~ 10 degrees with the contained angle of vertical direction.

The cross section of the groove can also be in an arc shape.

The pressing block is characterized in that one surface, close to the clamping groove, of the pressing block is an inclined surface, and an included angle between the inclined surface and the vertical direction is 10-15 degrees.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the screw rod polished rod is arranged in a clamping groove of the clamp, a positioning block on the clamping groove is provided with a positioning groove, the screw rod can be positioned, then a pressing block is moved, the pressing block is enabled to tightly press the screw rod from the upper side and the side surface, only the surface to be processed on the screw rod is exposed, and the screw rod is prevented from rotating in the processing process.

2. Before processing, the grinding wheel and the single diamond disc are rotated at a high speed at the same time, the grinding wheel descends at a low speed to contact with the single diamond disc to finish the surface shape of the grinding wheel, and the shape opposite to the roller is formed on the surface of the grinding wheel by utilizing the high hardness and the strength of the single diamond disc, so that the processing precision of the rack is greatly improved.

3. Compared with the gear milling, the gear milling machine has the advantages of good roughness of the tooth surface and higher tooth profile precision, can meet various high-precision requirements of customers, and is suitable for mass production.

4. The requirement of a client for quick proofing can be met, and a special cutter is not required to be customized; the single-tooth adjustment can meet various precision and trend requirements; the price of the single diamond roller has higher cost performance than that of a special cutter, and is not limited by a single cutter.

Drawings

FIG. 1 is a schematic structural diagram of the device of the present invention;

FIG. 2 is a schematic structural view of the clamp of the present invention;

fig. 3 is a side view of the clamp.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Examples

As shown in figure 1, the device for machining the rack tooth profile of the steering gear by using single-disc diamond disk grinding comprises a single-disc diamond disk 1, a grinding wheel 2, a clamp 3 and a movable workbench 4, wherein the single-disc diamond disk 1 and the clamp 3 are respectively arranged on the movable workbench 4, and the grinding wheel 2 is positioned on one side of the movable workbench 4.

The single diamond disc 1 is fixed on the rotating shaft of the first motor 5.

The grinding wheel 2 is fixed on the rotating shaft of the second motor 6, the rotating shaft of the second motor 6 is of a telescopic structure, and the telescopic length of the rotating shaft is adjusted according to the machining station, so that the grinding wheel can move in the Z-axis direction. The second motor 6 is arranged on the support frame 7, the support frame 7 drives the grinding wheel 2 to move up and down in the Y direction and move back and forth in the Z horizontal direction, and the workbench 4 can move left and right to realize the movement in the X direction.

The fixture 3 comprises a base 31, and a positioning block 32 and a pressing block 33 which are arranged on the base in a matched mode, a clamping groove is formed between the positioning block 32 and the pressing block 33, a hydraulic pull rod 34 is arranged below the pressing block 33, and the workpiece 8 to be machined is placed in the clamping groove and is tensioned downwards through the hydraulic pull rod 34 to enable the pressing block to press the workpiece 8 to be machined. As shown in fig. 2-3

The positioning block 33 is long, a groove is formed in the inner side of the positioning block, the groove is composed of a bottom surface 341, a side surface 342 and a transition inclined surface 343 connecting the bottom surface and the side surface, and an included angle alpha between the side surface 342 and the vertical direction is 6-10 degrees. The cross section of the groove can also be in an arc shape. One surface of the pressing block 33 close to the clamping groove is an inclined surface, and an included angle beta between the inclined surface and the vertical direction is 10-15 degrees.

The method for processing the steering gear rack by adopting the device comprises the following steps:

1, placing a workpiece 8 to be processed on a base 31, enabling one end of the workpiece to abut against a limiting block in the end face of a clamping groove, and positioning through the limiting block;

2, tensioning the workpiece to be machined downwards through a hydraulic pull rod 34 to enable a pressing block 33 to tightly press the workpiece 8 to be machined, so that the workpiece to be machined is fixed in the clamping groove;

4, moving the grinding wheel 2 to the single-chip diamond disc 1 through the second motor 6 and the support frame 7, rotating at a high speed simultaneously with the single-chip diamond disc 1, slowly descending the grinding wheel 2 to contact the single-chip diamond disc 1 to finish the surface shape of the grinding wheel, finishing the surface shape of the grinding wheel by using the single-chip diamond disc 1 to enable the surface tooth shape of the grinding wheel to be opposite to the required rack tooth shape, and moving the finished grinding wheel 2 to a fixed workpiece 8 to be machined to grind and machine the rack tooth shape.

Claims

1. The device for machining the rack tooth profile of the steering gear by using the single-disc diamond disc for gear grinding is characterized by comprising a single-disc diamond disc (1), a grinding wheel (2), a clamp (3) and a movable workbench (4), wherein the single-disc diamond disc (1) and the clamp (3) are respectively arranged on the movable workbench (4), and the grinding wheel (2) is positioned on one side of the movable workbench (4).

2. The device for processing the rack tooth profile of the steering gear by using the single-disc diamond grinding wheel as claimed in claim 1, wherein the single-disc diamond (1) is fixed on the rotating shaft of the first motor (5).

3. The device for processing the rack tooth profile of the steering gear by using the single-disc grinding machine as claimed in claim 1, wherein the grinding wheel (2) is fixed on a rotating shaft of the second motor (6), and the rotating shaft of the second motor (6) is of a telescopic structure, and the telescopic length of the rotating shaft is adjusted according to the processing station.

4. A device for machining a rack profile of a steering gear using single-disc sharpening as claimed in claim 3, wherein said second motor (6) is mounted on a support (7).

5. The device for processing the rack tooth profile of the steering gear by using the single-disc diamond disk for grinding the teeth is characterized in that the clamp (3) comprises a base (31), a positioning block (32) and a pressing block (33) which are arranged on the base in a matching way, a clamping groove is formed between the positioning block (32) and the pressing block (33), a hydraulic pull rod (34) is arranged below the pressing block (33), and the workpiece (8) to be processed is placed in the clamping groove and is tightly pressed on the workpiece (8) to be processed by the downward tensioning of the hydraulic pull rod (34).

6. The device for machining the rack tooth profile of the steering gear by using the single-disc grinding machine as claimed in claim 5, wherein the positioning block (32) is long and provided with a groove on the inner side, the groove is composed of a bottom surface (341), a side surface (342) and a transition inclined surface (343) connecting the bottom surface and the side surface, and the included angle between the side surface (342) and the vertical direction is 6-10 degrees.

7. The apparatus as claimed in claim 6, wherein the groove has a circular cross-section.

8. The device for grinding the tooth profile of the steering gear rack by using the single-disc diamond disc as claimed in claim 5, wherein one surface of the pressing block (33) close to the clamping groove is an inclined surface, and the included angle between the inclined surface and the vertical direction is 10-15 degrees.