CN218312136U - Centering clamping mechanism - Google Patents

Centering clamping mechanism Download PDF

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Publication number
CN218312136U
CN218312136U CN202222587139.3U CN202222587139U CN218312136U CN 218312136 U CN218312136 U CN 218312136U CN 202222587139 U CN202222587139 U CN 202222587139U CN 218312136 U CN218312136 U CN 218312136U
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China
Prior art keywords
piston
outer ring
face
gripping mechanism
pull rod
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CN202222587139.3U
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Chinese (zh)
Inventor
孙红梅
马淑侠
李法光
任钰汇
刘慧�
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Xuzhou XCMG Drivetrain Co Ltd
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Xuzhou XCMG Drivetrain Co Ltd
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Abstract

The utility model discloses a centering clamping mechanism, which comprises a piston outer ring, a piston assembly, an end face positioning plate, a pull disc, a pull rod and a pressing plate; the piston assembly is arranged in the inner hole of the piston outer ring and can move in the inner hole of the piston outer ring, and is used for clamping a machined part or loosening the machined part; the end face positioning plate is arranged on the end face of the outer ring of the piston, one side of the end face positioning plate is matched with the piston assembly for use, and the other side of the end face positioning plate is used for positioning the end face of the part to be machined; the pull disc is used for pulling the piston assembly; the pull rod penetrates through a central hole of the machined part after being inserted into the pull disc so as to drive the pull disc to clamp and loosen; the pressure plate is sleeved in the pull rod and is arranged on the end face of the inner hole of the part to be processed. The utility model discloses simple structure is compact, and application scope is wide, does not need the alignment during part clamping, and the size uniformity after the processing is good, has improved machining efficiency and machining precision, obtains anticipated effect through the process verification.

Description

Centering clamping mechanism
Technical Field
The utility model relates to a centering clamping mechanism is used in processing of cylindrical, dish class parts of outer circle centering with terminal surface location on engineering machine tool transaxle, the agricultural machinery transaxle.
Background
With the increasingly strong market competition of engineering machinery drive axle products and agricultural machinery drive axle products, the products increasingly tend to the development trend of high precision and low cost. The drive axle product has various product structures needing end face positioning and excircle centering, the machining size of the product is high in precision level relative to the geometric tolerance of the center, and the existing machining mode combining clamping and aligning cannot be guaranteed. The end face positioning centering clamping mechanism is designed in order to meet the design requirements of products after the products are processed and ensure the consistency of the sizes of the products processed in each batch.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a centering clamping mechanism, it is complicated to solve traditional clamping mode operation, presss from both sides tight yielding, and the size uniformity behind part dress card alignment inefficiency, the parts machining shortcoming such as poor, the precision is low.
The utility model discloses realize according to following technical scheme:
a centering and clamping mechanism comprises a piston outer ring, a piston assembly, an end face positioning plate, a pull disc, a pull rod and a pressure plate; the piston assembly is arranged in the piston outer ring inner hole and can move in the piston outer ring inner hole, and the piston assembly is used for clamping a machined part or loosening the machined part; the end face positioning plate is arranged on the end face of the outer ring of the piston, one side of the end face positioning plate is matched with the piston assembly for use, and the other side of the end face positioning plate is used for positioning the end face of the part to be machined; the pull disc is used for pulling the piston assembly; the pull rod penetrates through a central hole of the machined part after being inserted into the pull disc so as to drive the pull disc to clamp and loosen; the pressure plate is sleeved in the pull rod and is arranged on the end face of the inner hole of the part to be processed.
In some embodiments, the piston assembly comprises a tapered bore piston, a slider seat, a slider, a spring seat, and a compression spring; the sliding block seat and a plurality of uniformly distributed sliding blocks are arranged in the taper hole piston; the spring seat is fixed on the sliding block, the compression spring is installed in the spring seat, and one side of the end face positioning plate serves as a baffle of the compression spring.
In some embodiments, the sliding block seat and the taper hole piston are matched with each other by a step surface, so that the sliding block seat moves axially along with the taper hole piston; a plurality of evenly distributed sliding blocks in the sliding block seat are in sliding fit with the conical hole piston through conical surfaces, so that the sliding blocks move in the radial direction.
In some embodiments, the spring seat is secured to the slider with a screw.
In some embodiments, a sealing ring is arranged between the piston outer ring and the facing peripheral surface of the taper hole piston.
In some embodiments, a limiting component for limiting the moving distance of the taper hole piston is arranged between the piston outer ring and the opposite peripheral surface of the taper hole piston.
In some embodiments, a bolt is mounted on the side surface of the piston outer ring, a groove is formed in the outer side surface of the taper hole piston, the end of the bolt extends into the groove, and a limiting component is formed by the cooperation of the bolt and the groove.
In some embodiments, a fastening component is arranged between the pressure plate and the pull rod, and the pressure plate and the pull rod are pressed to drive the pull disc to clamp the piston assembly through the fastening component.
In some embodiments, the fastening component is a nut, the nut is installed on the pull rod in a threaded fit mode, and the pressing plate is pressed to clamp the machined part by tightening the nut.
In some embodiments, the pull rod is fixed in the pull plate with a screw.
The utility model discloses beneficial effect:
the fixture has the advantages of simple and compact structure, wide application range, no need of alignment during part clamping, good dimensional consistency after machining, improvement of machining efficiency and machining precision, and expected effect obtained through process verification.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, the illustrative embodiments and the description of the invention serve to explain the invention without unduly limiting the invention. It is obvious that the drawings in the following description are only some embodiments and that for a person skilled in the art, other drawings can also be derived from them without inventive effort.
In the drawings:
fig. 1 is a schematic structural view of a preferred embodiment of the centering and clamping mechanism of the present invention;
in the figure: 1. the device comprises a pull disc, a piston outer ring 2, a taper hole piston 3, an end face positioning plate 4, a pressing plate 5, a nut 6, a compression spring 7, a spring seat 8, a slider 9, a slider seat 10 and a pull rod 11.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solution in the embodiments, and the following embodiments are used to illustrate the present invention, but do not limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in figure 1, the utility model provides an engineering machine tool transaxle, agricultural machinery transaxle go up with the terminal surface location, the centering clamping mechanism is used in the processing of the cylinder class of excircle centering, dish class parts, mainly including drawing dish 1, pull rod 11, piston outer loop 2, terminal surface locating plate 4, piston assembly, clamp plate 5.
The pull disc 1 is used for pulling the taper hole piston 3; the pull rod 11 is inserted into the pull disc 1 and then penetrates through a central hole of a processed part to drive the pull disc 1 to clamp and loosen; the piston outer ring 2 is arranged on the outer ring of the piston assembly and is used for moving the piston assembly; the end face positioning plate 4 is arranged on the end face of the piston outer ring 2, wherein one side of the end face positioning plate is used as a baffle plate of a plurality of compression springs 7, and the other side of the end face positioning plate is used for positioning the end face of a part to be processed; the piston assembly is arranged in the inner hole of the piston outer ring 2 and moves in the inner hole of the piston outer ring 2; the pressing plate 5 is mounted on the end face of the part to be processed and used for clamping the part to be processed.
A preferred embodiment of the above embodiment is given below in relation to the piston assembly:
with continued reference to fig. 1, the piston assembly includes a tapered bore piston 2, a slider seat 10, a slider 9, a spring seat 8, and a compression spring 7; the sliding block seat 10 and a plurality of sliding blocks 9 which are uniformly distributed are arranged in the taper hole piston 3; the spring seat 8 is fixed on the sliding block 9 by screws, the compression spring 7 is installed in the spring seat 8, and one side of the end face positioning plate 4 is used as a baffle plate of the compression spring 7.
Further scheme: the sliding block seat 10 and the taper hole piston 3 are matched with each other by a step surface, so that the sliding block seat 10 moves axially along with the taper hole piston 3; a plurality of evenly distributed sliders 9 in the slider seat 10 are in sliding fit with the taper hole piston 3 through a taper surface, so that the sliders 9 move radially.
Further scheme: and a sealing ring is arranged between the circumferential surfaces of the piston outer ring 2 and the taper hole piston 3 which face each other.
Further scheme: and a limiting component for limiting the moving distance of the taper hole piston 3 is arranged between the circumferential surfaces of the piston outer ring 2 and the taper hole piston 3 in opposite directions.
The preferable scheme is as follows: the side surface of the piston outer ring 1 is provided with a bolt, the outer side surface of the taper hole piston 3 is provided with a groove, the end part of the bolt extends into the groove, and a limiting part is formed by the matching of the bolt and the groove.
Further scheme: and a fastening part is arranged between the pressing plate 5 and the pull rod 11, and the pressing plate 5 and the pull rod 11 are pressed to drive the pull disc 1 to clamp the piston assembly through the fastening part.
The preferable scheme is as follows: the fastening member is a nut 6, the nut 6 is attached to the pull rod 11 in a screw-fit manner, and the pressing plate 5 is pressed by tightening the nut 6 to clamp the workpiece.
The operation method for clamping the machined part comprises the following steps: a pull rod 11 is sleeved on the pull disc 1 and penetrates through a central hole of a processed part, a press plate 5 is sleeved on the pull rod 11 and is installed on the end face of an inner hole of the part, after the press plate 5 is fastened on the pull rod 11 through a nut 6, the pull rod 11 drives the pull disc 1 to clamp a piston assembly, a taper hole piston 3 in the piston assembly moves towards an end face positioning plate 4 along an inner hole of a piston outer ring 2, a plurality of uniformly distributed sliders 9 in a slider seat 10 slide towards the center simultaneously under the taper guiding action of the taper hole piston 3, a compression spring 7 installed in a spring seat 8 on the end face of each slider 9 is compressed, and the processed part is clamped;
the operation method for loosening the machined part comprises the following steps: the nut 6 is unscrewed, the pressing plate 5 is loosened, the compression spring 7 returns to drive the sliding block 9 in the sliding block seat 10 to push the taper hole piston 3 to move along the inner hole of the piston outer ring 2 towards the direction of the pull disc 1, the sliding blocks 9 uniformly distributed in the sliding block seat 10 simultaneously slide towards the periphery under the taper guiding effect of the taper hole piston 3, and the machined part is loosened.
To sum up, the utility model provides an engineering machine tool transaxle, agricultural machinery transaxle go up with the terminal surface location, the centering clamping mechanism is used in the processing of the cylinder class of excircle centering, dish class part, simple structure is compact, and application scope is wide, does not need the alignment during the part clamping, and the size uniformity after the processing is good, has improved machining efficiency and machining precision, verifies through the technology and obtains anticipated effect.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that although some embodiments described herein include some features included in other embodiments instead of others, combinations of features of different embodiments are also meant to be within the scope of the invention and form different embodiments. For example, in the above embodiments, those skilled in the art can combine the technical solutions and technical problems to be solved by the present application.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make modifications or changes to equivalent embodiments by utilizing the above technical contents without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical matters of the present invention are within the scope of the present invention.

Claims (10)

1. A centering gripping mechanism, comprising:
a piston outer ring;
the piston assembly is arranged in the piston outer ring inner hole and can move in the piston outer ring inner hole, and is used for clamping a machined part or loosening the machined part;
the end face positioning plate is arranged on the end face of the outer ring of the piston, one side of the end face positioning plate is matched with the piston assembly for use, and the other side of the end face positioning plate is used for positioning the end face of the part to be machined;
a pull disc for pulling the piston assembly;
the pull rod penetrates through a central hole of the machined part after being inserted into the pull disc so as to drive the pull disc to clamp and loosen;
and the pressing plate is sleeved in the pull rod and is arranged on the end surface of the inner hole of the part to be processed.
2. A centering gripping mechanism according to claim 1, characterized in that:
the piston assembly comprises a taper hole piston, a sliding block seat, a sliding block, a spring seat and a compression spring;
the sliding block seat and a plurality of sliding blocks which are uniformly distributed are arranged in the taper hole piston;
the spring seat is fixed on the sliding block, the compression spring is installed in the spring seat, and one side of the end face positioning plate serves as a baffle of the compression spring.
3. A centering gripping mechanism according to claim 2, characterized in that:
the sliding block seat and the taper hole piston are matched with each other through a step surface, so that the sliding block seat moves axially along with the taper hole piston;
a plurality of evenly distributed sliding blocks in the sliding block seat are in sliding fit with the conical hole piston through conical surfaces, so that the sliding blocks move in the radial direction.
4. A centering gripping mechanism according to claim 2, characterized in that:
the spring seat is fixed on the sliding block by a screw.
5. A centering gripping mechanism according to claim 2, characterized in that:
and a sealing ring is arranged between the outer ring of the piston and the opposite peripheral surface of the taper hole piston.
6. A centering gripping mechanism according to claim 2, wherein:
and a limiting component for limiting the moving distance of the taper hole piston is arranged between the piston outer ring and the circumferential surface of the taper hole piston in opposite directions.
7. A centering gripping mechanism according to claim 6, wherein:
the side surface of the piston outer ring is provided with a bolt, the outer side surface of the taper hole piston is provided with a groove, the end part of the bolt extends into the groove, and a limiting part is formed by the matching of the bolt and the groove.
8. A centering gripping mechanism according to claim 1, characterized in that:
and a fastening part is arranged between the pressing plate and the pull rod, and the pressing plate and the pull rod are pressed to drive the pull disc to clamp the piston assembly through the fastening part.
9. A centering gripping mechanism according to claim 8, wherein:
the fastening component is a nut, the nut is installed on the pull rod in a threaded matching mode, and the pressing plate is extruded to clamp the machined part by screwing the nut.
10. A centering gripping mechanism according to claim 1, wherein:
the pull rod is fixed in the pull disc through screws.
CN202222587139.3U 2022-09-29 2022-09-29 Centering clamping mechanism Active CN218312136U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222587139.3U CN218312136U (en) 2022-09-29 2022-09-29 Centering clamping mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222587139.3U CN218312136U (en) 2022-09-29 2022-09-29 Centering clamping mechanism

Publications (1)

Publication Number Publication Date
CN218312136U true CN218312136U (en) 2023-01-17

Family

ID=84822110

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202222587139.3U Active CN218312136U (en) 2022-09-29 2022-09-29 Centering clamping mechanism

Country Status (1)

Country Link
CN (1) CN218312136U (en)

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