CN220007361U - Pitch circle positioning device suitable for processing inner hole and end face of cylindrical straight gear - Google Patents
Pitch circle positioning device suitable for processing inner hole and end face of cylindrical straight gear Download PDFInfo
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- CN220007361U CN220007361U CN202321540838.0U CN202321540838U CN220007361U CN 220007361 U CN220007361 U CN 220007361U CN 202321540838 U CN202321540838 U CN 202321540838U CN 220007361 U CN220007361 U CN 220007361U
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- positioning
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- positioning body
- elastic jacket
- pitch circle
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- 238000003754 machining Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of machining, and relates to a gear pitch circle positioning device suitable for internal grinding of an inner hole and an end face of a cylindrical straight gear. The pitch circle positioning device suitable for processing the inner hole and the end face of the cylindrical straight gear is provided with a positioning body; the positioning body is a hollow cylinder with a small middle part and large two ends, and the through hole in the center of the hollow cylinder is a stepped through hole with a large middle part and a small middle part; one end of the positioning body is connected with the main shaft of the internal grinding machine, and the other end of the positioning body is positioned in the screwing nut; the pitch circle positioning device is also provided with an elastic jacket; one end of the elastic jacket is positioned in a through hole at one end of the positioning body matched with the screwing nut, and the other end extends out of the through hole to be fixedly connected with the screwing nut; the elastic jacket is matched with the conical surface of the positioning body; the inner wall surface of the elastic jacket is provided with a plurality of positioning bulges uniformly distributed along the circumference; the plurality of positioning protrusions of the elastic jacket are in one-to-one correspondence with tooth grooves of the processed gear and are tightly attached. The utility model has simple structure, high positioning efficiency and convenient operation.
Description
Technical Field
The utility model belongs to the technical field of machining, and particularly relates to a gear pitch circle positioning device suitable for internal grinding of an inner hole and an end face of a cylindrical straight gear.
Background
With the increasing use of involute gears, high-hardness tooth-surface gears are often used to ensure service life. The high-hardness tooth surface gear generally obtains higher tooth surface hardness through heat treatment methods such as carburizing and quenching. The gear is inevitably deformed after heat treatment. The involute gear is in meshing transmission mainly through contact of involute gear surfaces, so that it is most direct and effective to finish an inner hole and an end surface by adopting pitch circle positioning. In order to improve grinding clamping efficiency and effectively realize pitch circle positioning, various gear pitch circle positioning devices are also continuously optimized and improved.
It is known that various related industries are constantly updating and optimizing gear pitch circle positioning devices, and the design principle of the pitch circle clamp is roughly divided into three types: (1) The simple pitch circle clamp mainly utilizes a general four-jaw chuck, a three-jaw chuck and a needle roller matching mode; (2) The method is realized by adopting a curved surface self-locking matching positioning steel ball mode; (3) The elastic sleeve is matched with the steel ball or the rolling pin to realize an effective positioning mode.
The positioning mode is realized by putting the round pin (phi d) or the round ball into a tooth slot of a gear and matching with an elastic jacket, the round pin is firstly put into the tooth slot in each positioning operation, if careless, the round pin is easy to fall off, and a retainer is designed for fixing the round rod for preventing the round pin from falling off, so that the operation is inconvenient.
Disclosure of Invention
In order to solve the technical problems, the utility model aims to provide a pitch circle positioning device suitable for processing an inner hole and an end face of a cylindrical straight gear.
The utility model adopts the following technical scheme for accomplishing the purposes:
the pitch circle positioning device is suitable for processing the inner hole and the end face of the cylindrical straight gear and is provided with a positioning body; the positioning body is a hollow cylinder with a small middle part and large two ends, and the through hole in the center of the hollow cylinder is a stepped through hole with a large middle part and a small middle part; one end of the positioning body is connected with the main shaft of the internal grinding machine, and the other end of the positioning body is positioned in the screwing nut; the pitch circle positioning device is also provided with an elastic jacket for clamping the gear to be processed; one end of the elastic jacket is positioned in a through hole at one end of the positioning body matched with the screwing nut, and the other end of the elastic jacket extends out of the through hole to be fixedly connected with the screwing nut; the elastic jacket is matched with the conical surface of the positioning body to form a structure that the elastic jacket can move relative to the positioning body under the action of screwing the nut; the inner wall surface of the elastic jacket is provided with a plurality of positioning bulges uniformly distributed along the circumference; the outer wall surface of the positioning bulge is arc-shaped; the elastic clamping sleeve is provided with a plurality of positioning protrusions which are in one-to-one correspondence with tooth grooves of the processed gear and are tightly attached to the tooth grooves of the processed gear, so that the gear pitch circle positioning device is realized.
A supporting plate is further arranged in the through hole at one end of the positioning body matched with the screwing nut; one end of the supporting plate is attached to the processed gear, and the other end of the supporting plate is fixed with the positioning body.
According to the pitch circle positioning device suitable for processing the inner hole and the end face of the cylindrical straight gear, the elastic jacket is elastically deformed by rotating the screw nut, and the arc on the elastic jacket is tightly attached to the tooth groove of the gear to be processed, so that the pitch circle positioning of the gear is realized; the positioning mode adopted by the utility model is simple to operate and high in positioning precision, and the pitch circle positioning of the cylindrical spur gears with different moduli and numbers of teeth can be realized by designing different elastic jackets according to the technical parameters of the gears.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
FIG. 2 is a schematic view of the structure of an elastic jacket according to the present utility model.
In the figure: 1. the positioning body 2, the supporting plate 3, the elastic jacket 4, the screwing nut 5, the bolt 6, the processed gear 7, the bolt 8, the screw 9, the internal grinder main shaft 10 and the positioning bulge.
Description of the embodiments
The utility model will be described with reference to the accompanying drawings and specific embodiments, in which the internal grinding machine, the positioning body, the supporting plate and the screwing nut are all structures existing in the prior art, and will not be described in any greater detail herein.
As shown in fig. 1, a pitch circle positioning device suitable for processing an inner hole and an end face of a cylindrical straight gear is provided with a positioning body 1; the positioning body 1 is a hollow cylinder with a small middle and large two ends, and a through hole in the center of the hollow cylinder is a stepped through hole with a large middle and a small two ends; one end of the positioning body 1 is connected with a main shaft 9 of the internal grinding machine, and the other end of the positioning body is positioned in the screwing nut 4; the pitch circle positioning device is also provided with an elastic jacket 3 for clamping the gear to be processed; one end of the elastic jacket 3 is positioned in a through hole at one end of the positioning body matched with the screwing nut, and the other end extends out of the through hole to be fixedly connected with the screwing nut; the elastic jacket is matched with the conical surface of the positioning body to form a structure that the elastic jacket can move relative to the positioning body under the action of screwing the nut; referring to fig. 2, the inner wall surface of the elastic jacket 3 is provided with a plurality of positioning protrusions 10 uniformly distributed along the circumference; the outer wall surface of the positioning bulge 10 is arc-shaped; the elastic clamping sleeve is provided with a plurality of positioning protrusions which are in one-to-one correspondence with tooth grooves of the processed gear and are tightly attached to the tooth grooves of the processed gear, so that the gear pitch circle positioning device is realized.
A supporting plate 2 is further arranged in a through hole at one end of the positioning body matched with the screwing nut; one end of the supporting plate 2 is attached to the processed gear, and the other end is fixed to the positioning body.
The device is firstly connected with a main shaft of an internal grinder through a screw 8 on a positioning body 1, a screw nut 4 is in a loosening state, then a gear 6 to be processed is correctly installed in an elastic jacket 3, one end face of the gear to be processed is attached to the end face of a supporting plate 2, the attachment condition of an arc and a tooth groove is observed, the screw nut 4 is screwed gradually, at the moment, an inner conical surface on the positioning body 1 is combined with an outer conical surface of the elastic jacket 3, the elastic jacket 3 is deformed, the arc of the elastic jacket 3 is tightly attached to the tooth groove of the gear to be processed, and the pitch circle positioning of the gear is realized.
The elastic jacket 3 and the positioning arc form a whole, and the utility model has simple structure, effective positioning and convenient operation.
Claims (2)
1. Pitch circle positioning device suitable for processing inner hole and end face of cylindrical straight gear, characterized in that: the pitch circle positioning device is provided with a positioning body; the positioning body is a hollow cylinder with a small middle part and large two ends, and the through hole in the center of the hollow cylinder is a stepped through hole with a large middle part and a small middle part; one end of the positioning body is connected with the main shaft of the internal grinding machine, and the other end of the positioning body is positioned in the screwing nut; the pitch circle positioning device is also provided with an elastic jacket for clamping the gear to be processed; one end of the elastic jacket is positioned in a through hole at one end of the positioning body matched with the screwing nut, and the other end of the elastic jacket extends out of the through hole to be fixedly connected with the screwing nut; the elastic jacket is matched with the conical surface of the positioning body to form a structure that the elastic jacket can move relative to the positioning body under the action of screwing the nut; the inner wall surface of the elastic jacket is provided with a plurality of positioning bulges uniformly distributed along the circumference; the outer wall surface of the positioning bulge is arc-shaped; the elastic clamping sleeve is provided with a plurality of positioning protrusions which are in one-to-one correspondence with tooth grooves of the processed gear and are tightly attached to the tooth grooves.
2. A pitch circle positioning device suitable for processing inner holes and end faces of spur gears as claimed in claim 1, wherein: a supporting plate is further arranged in the through hole at one end of the positioning body matched with the screwing nut; one end of the supporting plate is attached to the processed gear, and the other end of the supporting plate is fixed with the positioning body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321540838.0U CN220007361U (en) | 2023-06-16 | 2023-06-16 | Pitch circle positioning device suitable for processing inner hole and end face of cylindrical straight gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321540838.0U CN220007361U (en) | 2023-06-16 | 2023-06-16 | Pitch circle positioning device suitable for processing inner hole and end face of cylindrical straight gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220007361U true CN220007361U (en) | 2023-11-14 |
Family
ID=88691636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321540838.0U Active CN220007361U (en) | 2023-06-16 | 2023-06-16 | Pitch circle positioning device suitable for processing inner hole and end face of cylindrical straight gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220007361U (en) |
-
2023
- 2023-06-16 CN CN202321540838.0U patent/CN220007361U/en active Active
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