Chuck clamp assembly for grinding inner hole of bevel gear

Abstract

The utility model provides a chuck clamp assembly for grinding an inner hole of a bevel gear, which relates to the field of clamping jaw clamps and comprises a vertically arranged chuck body, a plurality of clamping jaws capable of moving in the horizontal direction and a transition receiving disc. All the clamping jaws are fixed on the chuck body; all the clamping jaws are evenly distributed on the chuck body in a circumferential array mode with the axis of the chuck body as the center. All the clamping jaws face the axis of the chuck body. The transition receiving disc is fixed to the chuck body and located on the plane opposite to the plane where the clamping jaws are arranged. The positioning device is used for enabling the pitch circle center of the bevel gear to coincide with the axis of the chuck body; the positioning device is fixed to the chuck body and located on the same plane as the clamping jaws. According to the chuck clamp assembly for grinding the inner hole of the bevel gear, the problem of pitch circle center machining deviation during grinding machining of the inner hole of the bevel gear in the prior art can be solved, and grinding machining of the inner hole in the pitch circle center of the bevel gear is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of claw clamps, in particular to a chuck clamp component used for grinding the inner hole of a bevel gear. Background Art

[0002] Bevel gears are often used to transmit motion and power between two intersecting shafts, where the inner hole of the bevel gear is used to connect the rotating shaft. When two bevel gears intersect to generate power transmission, the gear teeth of the two bevel gears collide with each other. If the inner hole of the bevel gear used to connect the rotating shaft deviates during processing, the two bevel gears will rotate uncoordinatedly, affecting the transmission function.

[0003] When machining the teeth of bevel gears, slight deviations in the tooth position cannot be avoided. When the bevel gear is clamped with a claw fixture and its inner hole is machined, the position deviation of the teeth will cause the inner hole confirmed by the original bevel gear center to be different from the center position of the bevel gear with the deviation in the tooth position. When the bevel gears intersect to generate power transmission, the center of the pitch circle is not the center of the bevel gear, causing the two bevel gears to rotate uncoordinatedly. Utility Model Content

[0004] In view of the above-mentioned problems, the utility model provides a chuck fixture assembly for grinding the inner hole of a bevel gear, which can solve the problem of pitch circle center machining deviation when grinding the inner hole of a bevel gear in the prior art, and realize grinding the inner hole at the pitch circle center of the bevel gear.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model provides a chuck fixture assembly for grinding the inner hole of a bevel gear, comprising a vertically placed chuck body, a plurality of claws that can be displaced in the horizontal direction and a transition plate for connecting with a lathe spindle; all the claws are fixed on the chuck body; all the claws are evenly distributed on the chuck body in a circular array with the axis of the chuck body as the center; all the claws face the axis of the chuck body; a side plane of the chuck body with the claws fixed is used as the first side surface of the chuck body, and a plane opposite to the first side surface of the chuck body is used as the second side surface of the chuck body; the transition plate is fixed on the second side surface of the chuck body;

[0007] Also included is a positioning device for aligning the center of the pitch circle of the bevel gear with the axis of the chuck body;

[0008] The positioning device is fixed on the first side surface of the chuck body.

[0009] The chuck fixture assembly for grinding the inner hole of a bevel gear provided by the utility model, preferably, the positioning device comprises a cylindrical base and a plurality of support bodies;

[0010] The positioning device includes a cylindrical base and a plurality of supporting bodies for supporting the bevel gear;

[0011] The circular bottom surface of the base is fixed to the first side surface of the chuck body; the center of the base coincides with the axis of the chuck body; all the claws are evenly distributed around the base; all the support bodies are fixed to the upper surface of the base; and the claws for clamping the bevel gear are close to the support body.

[0012] The utility model provides a chuck fixture assembly for grinding the inner hole of a bevel gear, preferably, a circular groove is provided on the upper surface of the base; the center of the groove coincides with the axis of the chuck body; a plurality of mounting holes for mounting the support body are provided on the edge of the groove; all the mounting holes are evenly distributed on the upper surface of the base in a circular array with the groove as the center; one mounting hole and one clamping claw are located on the same straight line passing through the axis of the chuck body;

[0013] The support body is fixed in the mounting hole;

[0014] A first fixing hole is provided on both sides of each mounting hole; all the first fixing holes are located on a circle centered on the groove; a first matching hole matching the first fixing hole is provided on the chuck body; the first fixing hole and the first matching hole are fixed by screws.

[0015] The chuck fixture assembly for grinding the inner hole of a bevel gear provided by the utility model, preferably, the support body comprises a support rod and a positioning ball body for supporting the tooth groove of the bevel gear;

[0016] The support rod is vertically fixed in the mounting hole; the positioning ball is fixed on the top of the support rod;

[0017] The top of the positioning sphere is in a plane shape; the side surface of the positioning sphere is in an arc-shaped curved surface.

[0018] The utility model provides a chuck fixture assembly for grinding the inner hole of a bevel gear, preferably, the clamping claw comprises a pressing block and an oil cylinder;

[0019] A second fixing hole is provided on the corner of the oil cylinder; a second matching hole matching the second fixing hole is provided on the chuck body; the second fixing hole and the second matching hole are fixed by screws; the telescopic rod of the oil cylinder faces the same direction as the first side surface of the chuck body; the pressure block is fixed to the telescopic rod of the oil cylinder; and the movement path of the pressure block coincides with the axis of the support body.

[0020] The utility model provides a chuck fixture assembly for grinding the inner hole of a bevel gear, preferably, the chuck body is provided with a third matching hole for adapting to the bases of different sizes; the chuck body is also provided with a fourth matching hole for matching the claws of the bases of different sizes.

[0021] The above technical solution has the following advantages or beneficial effects:

[0022] The utility model provides a chuck fixture assembly for grinding the inner hole of a bevel gear, which is provided with a positioning device; the positioning device comprises a base and a plurality of support bodies; the support bodies comprise a support rod and a positioning ball body for supporting the tooth groove of the bevel gear; when the bevel gear is placed on the positioning device, the tooth groove of the bevel gear is brought into contact with the positioning ball body; the support rod is fixed in a mounting hole on the upper surface of the base, the mounting holes are uniformly distributed on the upper surface of the base in a circular array with a groove as the center, each mounting hole is at the same distance from the center of the groove, so that each positioning ball body is at the same distance from the center of the groove; after the bevel gear is processed on the gear teeth, the pitch circle size of the gear teeth is determined, and the positioning ball body is clamped between the gear teeth of two bevel gears by matching the tooth groove position on the pitch circle surface of the bevel gear, so that the center of the pitch circle of the bevel gear is concentric with the base groove on the positioning device, thereby determining the inner hole of the bevel gear that needs to be ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, but the emphasis is on illustrating the subject matter of the present invention.

[0024] Figure 1 It is a left-side structural schematic diagram of a chuck fixture assembly for grinding the inner hole of a bevel gear provided in Example 1 of the utility model.

[0025] Figure 2 It is a three-dimensional structural schematic diagram of a chuck fixture assembly for grinding the inner hole of a bevel gear provided in Example 1 of the utility model.

[0026] Figure 3This is a working principle diagram of a chuck fixture assembly for grinding the inner hole of a bevel gear provided in Example 1 of the utility model. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0028] Embodiment 1:

[0029] like Figures 1 to 3 As shown, a chuck fixture assembly for grinding the inner hole of a bevel gear provided by Example 1 of the utility model comprises a vertically placed chuck body 1, a plurality of claws 2 that can be displaced in the horizontal direction, and a transition plate 3 for connecting with a lathe spindle; all the claws 2 are fixed on the chuck body 1; all the claws 2 are evenly distributed on the chuck body 1 in a circular array with the axis of the chuck body 1 as the center; all the claws 2 face the axis of the chuck body 1; a side plane of the chuck body 1 on which the claws 2 are fixed is used as a first side surface of the chuck body 1, and a plane opposite to the first side surface of the chuck body 1 is used as a second side surface of the chuck body 1; the transition plate 3 is fixed on the second side surface of the chuck body 1;

[0030] It also includes a positioning device 4 for aligning the center of the pitch circle of the bevel gear 0 with the axis of the chuck body 1;

[0031] The positioning device 4 is fixed on the first side surface of the chuck body 1 .

[0032] When using the chuck fixture assembly for grinding the inner hole of a bevel gear provided in Example 1 of the utility model, the chuck body 1 is connected to the main shaft of a machine tool through the transition plate 3; the bevel gear 0 to be processed is placed on the positioning device 4, and the positioning device 4 makes the center of the pitch circle of the bevel gear 0 coincide with the axis of the chuck body 1; the bevel gear 0 is fixed to the chuck body 1 by horizontally moving the claw 2 to grasp the side of the bevel gear 0 without gear teeth.

[0033] The chuck fixture assembly for grinding the inner hole of a bevel gear provided in Example 1 of the utility model is provided with a positioning device 4; the positioning device 4 is used to coincide the center of the pitch circle of the bevel gear 0 with the axis of the chuck body 1, thereby reducing the influence of the machining error of the gear teeth in the bevel gear 0 on the machining of the inner hole of the bevel gear 0, thereby alleviating the incoordination phenomenon of the bevel gear 0 during the transmission process.

[0034] The chuck fixture assembly for grinding the inner hole of a bevel gear provided in Example 1 of the utility model is provided with a plurality of jaws 2; the jaws 2 can be displaced in the horizontal direction. When the bevel gear 0 is placed on the positioning device 4, the jaws 2 are linearly displaced in the horizontal direction, so that the jaws 2 press the bevel gear 0 placed on the positioning device 4, thereby fixing the bevel gear 0 to the chuck body 1.

[0035] The chuck fixture assembly for grinding the inner hole of a bevel gear provided in Example 1 of the utility model, preferably, the positioning device 4 includes a cylindrical base 41 and a plurality of support bodies 42 for supporting the bevel gear 0;

[0036] The circular bottom surface of the base 41 is fixed to the first side surface of the chuck body 1; the center of the base 41 coincides with the axis of the chuck body 1; all the claws 2 are evenly distributed around the base 41; all the support bodies 42 are fixed to the upper surface of the base 41; the claws 2 used to press the bevel gear 0 are close to the support body 42.

[0037] The center of the base 41 is aligned with the axis of the chuck body 1. After the chuck body 1 is connected to the spindle of the machine tool, when the bevel gear 0 is ground, the grinding position is located at the axis of the chuck body 1. The center of the base 41 in the positioning device 4 is aligned with the inner hole of the bevel gear 0 that needs to be ground, so that the inner hole of the bevel gear 0 can be accurately ground; the claw 2 close to the support body 42 can better clamp the bevel gear 0 placed on the support body 42, so that the bevel gear 0 will not be displaced during the rotation processing of the machine tool spindle.

[0038] The chuck fixture assembly for grinding the inner hole of a bevel gear provided in Example 1 of the utility model is preferably provided with a circular groove 411 on the upper surface of the base 41; the center of the groove 411 coincides with the axis of the chuck body 1; a plurality of mounting holes 412 for mounting a support body are provided on the edge of the groove 411; all the mounting holes 412 are evenly distributed on the upper surface of the base 41 in a circular array with the groove 411 as the center; one mounting hole 412 and one clamping claw 2 are located on the same straight line passing through the axis of the chuck body 1;

[0039] A support body 42 is fixed in the mounting hole 412;

[0040] First fixing holes 413 are provided on both sides of each mounting hole 412; all first fixing holes 413 are located on a circle centered on the groove 411; first matching holes matching the first fixing holes 413 are provided on the chuck body 1; the first fixing holes 413 and the first matching holes are fixed by screws;

[0041] A groove 411 is provided on the upper surface of the base 41. Since the gear teeth of the bevel gear 0 gradually increase inward from the edge of the bevel gear 0, the groove 411 is provided on the base 41 to prevent the protruding gear teeth of the bevel gear 0 from rubbing against the base 41 during processing, thereby causing wear of the bevel gear 0.

[0042] All mounting holes 412 are evenly distributed in a circular array on the upper surface of the base 41 with the groove 411 as the center, and the support bodies 42 fixed in each mounting hole 412 are also evenly distributed in a circular array with the groove 411 as the center, so that each support body 42 is at the same distance from the center of the groove 411, so that the support body 42 matches the tooth groove of the bevel gear 0, so that the pitch circle center of the bevel gear 0 is concentric with the groove 411 of the base 41 on the positioning device 4, thereby determining the inner hole of the bevel gear 0 that needs to be ground; a support body 42 and a claw 2 are grouped together, the bevel gear 0 is supported by the support body 42, and the claw 2 presses the contact position between the support body 42 and the bevel gear 0, so that the contact part between the support body 42 and the bevel gear 0 will be fixed more firmly, thereby reducing the inner hole error of the bevel gear 0 caused by the displacement of the bevel gear 0 during rotation when the inner hole of the bevel gear 0 is processed.

[0043] The chuck fixture assembly for grinding the inner hole of a bevel gear provided in Example 1 of the utility model, preferably, the support body 42 includes a support rod 421 and a positioning ball 422 for supporting the tooth groove of the bevel gear;

[0044] The support rod 421 is vertically fixed in the mounting hole 412; the positioning ball 422 is fixed on the top of the support rod 421;

[0045] The top of the positioning sphere 422 is flat; the side of the positioning sphere 422 is an arc-shaped curved surface;

[0046] The support rod 421 raises the distance between the bevel gear 0 and the base 41, so that the raised part in the middle of the bevel gear 0 will not rub against the base 41, avoiding the wear of the bevel gear 0; the top of the positioning ball 422 located on the top of the support rod 421 is flat, which increases the contact area between the positioning ball 422 and the tooth groove of the bevel gear 0, preventing the clamping jaws 2 from generating a large pressure due to the small contact area when clamping the bevel gear 0, thereby damaging the bevel gear 0; the side surface of the positioning ball 422 is an arc-shaped surface, which can better adapt to the opening angle of the tooth groove of the bevel gear 0, and protect the tooth groove of the bevel gear 0 during the rotation processing of the bevel gear 0.

[0047] The chuck fixture assembly for grinding the inner hole of a bevel gear provided in Example 1 of the utility model, preferably, the claw 2 includes a pressing block 21 and a cylinder 22;

[0048] A second fixing hole 221 is provided on the corner of the oil cylinder 22; a second matching hole matching the second fixing hole 221 is provided on the chuck body 1; the second fixing hole 221 and the second matching hole are fixed by screws; the telescopic rod of the oil cylinder 22 faces the same direction as the first side surface of the chuck body 1; the pressing block 21 is fixed to the telescopic rod of the oil cylinder 22; the movement path of the pressing block 21 coincides with the axis of the support body 42;

[0049] When the clamping jaws 2 clamp the bevel gear 0, the telescopic rod of the oil cylinder 22 is displaced, so that the pressing block 21 fixed on the telescopic rod of the oil cylinder 22 moves toward the bevel gear 0 and aligns with the bevel gear 0 placed on the support body 42 to clamp the bevel gear 0, thereby fixing the bevel gear 0 to the chuck body 1.

[0050] The chuck fixture assembly for grinding the inner hole of a bevel gear provided in Example 1 of the utility model, preferably, a third matching hole 11 for adapting to bases 41 of different sizes is provided on the chuck body 1; a fourth matching hole 12 for matching the claws 2 of bases 41 of different sizes is also provided on the chuck body 1;

[0051] For bevel gears 0 of different sizes, bases 41 of different sizes are used for positioning, so that the inner hole of the bevel gear 0 can be accurately machined at the center of the pitch circle; for bases 41 of different sizes, the position of the claw 2 is moved so that it can better adapt to the base 41 and clamp the bevel gear 0 placed on the support body 42.

[0052] In summary, the chuck fixture assembly for grinding the inner hole of a bevel gear provided by the utility model can solve the problem of pitch circle center machining deviation when grinding the inner hole of a bevel gear in the prior art, and realizes grinding the inner hole at the center of the pitch circle of the bevel gear.

[0053] Those skilled in the art should understand that those skilled in the art can implement the above-mentioned variations by combining the prior art and the above-mentioned embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present utility model, and will not be described in detail here.

[0054] The above describes the preferred embodiments of the utility model. It should be understood that the utility model is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can make many possible changes and modifications without departing from the technical solution of the utility model, or modify them into equivalent embodiments with equivalent changes, which does not affect the essential content of the utility model. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of protection of the technical solution of the utility model.

Claims

1. A chuck fixture assembly for grinding the inner hole of a bevel gear, comprising a vertically placed chuck body, a plurality of horizontally displaceable jaws and a transition plate for connecting to a lathe spindle; all of the jaws are fixed on the chuck body; all of the jaws are evenly distributed on the chuck body in a circular array with the axis of the chuck body as the center; all of the jaws face the axis of the chuck body; a side plane of the chuck body with the jaws fixed is used as a first side surface of the chuck body, and a plane opposite to the first side surface of the chuck body is used as a second side surface of the chuck body; the transition plate is fixed on the second side surface of the chuck body; It is characterized in that Also included is a positioning device for aligning the center of the pitch circle of the bevel gear with the axis of the chuck body; The positioning device is fixed on the first side surface of the chuck body.

2. The chuck fixture assembly for grinding the inner hole of a bevel gear according to claim 1, characterized in that: The positioning device includes a cylindrical base and a plurality of supporting bodies for supporting the bevel gear; The circular bottom surface of the base is fixed to the first side surface of the chuck body; the center of the base coincides with the axis of the chuck body; all the claws are evenly distributed around the base; all the support bodies are fixed to the upper surface of the base; and the claws for clamping the bevel gear are close to the support body.

3. The chuck fixture assembly for grinding the inner hole of a bevel gear according to claim 2, characterized in that: A circular groove is provided on the upper surface of the base; the center of the groove coincides with the axis of the chuck body; a plurality of mounting holes for mounting the support body are provided on the edge of the groove; all the mounting holes are evenly distributed on the upper surface of the base in a circular array with the groove as the center; one mounting hole and one clamping claw are located on the same straight line passing through the axis of the chuck body; The support body is fixed in the mounting hole; A first fixing hole is provided on both sides of each mounting hole; all the first fixing holes are located on a circle centered on the groove; a first matching hole matching the first fixing hole is provided on the chuck body; the first fixing hole and the first matching hole are fixed by screws.

4. The chuck fixture assembly for grinding the inner hole of a bevel gear according to claim 3, characterized in that: The support body comprises a support rod and a positioning ball for supporting the bevel gear tooth groove; The support rod is vertically fixed in the mounting hole; the positioning ball is fixed on the top of the support rod; The top of the positioning sphere is in a plane shape; the side surface of the positioning sphere is in an arc-shaped curved surface.

5. The chuck fixture assembly for grinding the inner hole of a bevel gear according to claim 2, characterized in that: The clamping claw comprises a pressing block and an oil cylinder; A second fixing hole is provided on the corner of the oil cylinder; a second matching hole matching the second fixing hole is provided on the chuck body; the second fixing hole and the second matching hole are fixed by screws; the telescopic rod of the oil cylinder faces the same direction as the first side surface of the chuck body; the pressure block is fixed to the telescopic rod of the oil cylinder; and the movement path of the pressure block coincides with the axis of the support body.

6. The chuck fixture assembly for grinding the inner hole of a bevel gear according to claim 2, characterized in that: The chuck body is provided with a third matching hole for adapting to the bases of different sizes; the chuck body is also provided with a fourth matching hole for matching the clamping claws of the bases of different sizes.

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