CN211841241U - Workpiece jacking structure with hollow center capable of shortening clamping distance - Google Patents
Workpiece jacking structure with hollow center capable of shortening clamping distance Download PDFInfo
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- CN211841241U CN211841241U CN202020417434.2U CN202020417434U CN211841241U CN 211841241 U CN211841241 U CN 211841241U CN 202020417434 U CN202020417434 U CN 202020417434U CN 211841241 U CN211841241 U CN 211841241U
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- tailstock
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- movable sleeve
- hollow center
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Abstract
The workpiece jacking structure comprises a headstock hollow center and a tailstock hollow center, the tailstock hollow center is fixedly arranged at the front end of a tailstock hollow movable sleeve, the tailstock hollow movable sleeve is arranged inside a tailstock shell, the inside of the tailstock hollow center is of a hollow structure, the center end of the tailstock hollow center is also of a through hole structure communicated with the inside of the tailstock hollow center, the tailstock hollow movable sleeve is of a hollow structure, a small-diameter part in a combined slender shaft part extends into the tailstock hollow center and the inside of the tailstock hollow movable sleeve through the through hole structure at the front end of the tailstock hollow center, the tailstock hollow center and the headstock center respectively jack two ends of a large-diameter part in the combined slender shaft part to realize stable jacking for shortening the clamping distance of the combined slender shaft part, the clamping rigidity of the combined slender shaft part is increased, and the workpiece cannot be bent and deformed in the axial direction, the machining precision of parts is guaranteed, the structure is simple, the operation is convenient, and the machining efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of the lathe, concretely relates to hollow top shortens work piece top tight structure of centre gripping distance.
Background
Combined shaft parts such as a valve core assembly belong to slender rod parts, and are generally formed by connecting a plurality of parts, as shown in fig. 2. If the valve core assembly needs to grind the excircle of a part through a cylindrical grinder after the assembly is finished, the part after the assembly is finished is overlong in axial length and belongs to a slender rod part, two tops of a machine tool tightly push against a workpiece during grinding, the natural sagging of the workpiece easily causes the axial line of the part to be bent, the grinding difficulty is increased, and qualified parts are difficult to process. Patent No. CN201220677373.9 discloses a deep hole processing device, in which although a hollow center structure is used, a hollow support structure is specially made to support the middle of the workpiece, which greatly increases the processing cost, and the processing and manufacturing are not simple, making the machine structure complicated. There is therefore a need for improvements.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem: the utility model provides a hollow top shortens work piece top tight structure of centre gripping distance, the utility model discloses a hollow top of tailstock and the hollow movable sleeve's of tailstock hollow structure realize to the combination slender axles class part shorten centre gripping distance stable top tight, increased the centre gripping rigidity of combination slender axles class part on the grinding machine, when excircle grinding emery wheel grinding excircle, bending deformation can not appear in the work piece axial, has guaranteed the machining precision of part very easily, simple structure, and convenient operation has improved machining efficiency.
The utility model adopts the technical proposal that: the workpiece jacking structure comprises a headstock centre and a tailstock hollow centre, wherein the headstock centre is arranged inside a headstock of an external grinding machine, the tailstock hollow centre is fixedly arranged at the front end of a tailstock hollow movable sleeve, the tailstock hollow movable sleeve is arranged inside a tailstock shell, the inside of the tailstock hollow centre is of a hollow structure, the tip end of the tailstock hollow centre is also of a through hole structure communicated with the inside of the tailstock hollow movable sleeve in a hollow manner, the headstock and the tailstock hollow centre jack tightly clamp a combined slender shaft part on the external grinding machine, the combined slender shaft part is of a slender structure formed by connecting and combining a large-diameter part and a small-diameter part, and the small-diameter part in the combined slender shaft part extends into the inside of the tailstock hollow centre and the inside of the tailstock hollow movable sleeve through the through hole structure at the front end of the tailstock hollow centre, the tail frame hollow center and the head frame center respectively tightly push two ends of a large-diameter part in the combined slender shaft part to realize stable pushing of the combined slender shaft part for shortening the clamping distance.
The technical scheme is further limited, the tailstock hollow center is fixedly installed in an inner cavity at the front end of the tailstock hollow movable sleeve through a screw, the center end at the front end of the tailstock hollow center extends out of the tailstock hollow movable sleeve, the tailstock hollow movable sleeve is rotatably installed inside a tailstock shell through a linear bearing, a push rod structure is arranged at the rear end inside the tailstock shell, and the push rod structure is fixedly connected with the rear end of the tailstock hollow movable sleeve and used for applying axial force to the tailstock hollow movable sleeve and the tailstock hollow center at the front end.
In addition, the technical scheme is further limited, and the headstock center is elastically arranged inside the headstock of the cylindrical grinding machine through a taper sleeve.
The utility model has the advantages compared with the prior art:
1. according to the scheme, the tail frame hollow center and the tail frame hollow movable sleeve are both of hollow structures, when the combined slender shaft type part is clamped in the excircle grinding process, the small-diameter part in the combined slender shaft type part extends into the tail frame hollow center and the tail frame hollow movable sleeve through the through hole structure at the front end of the tail frame hollow center, the tail frame hollow center and the head frame center respectively tightly push two ends of the large-diameter part in the combined slender shaft type part, and then the stable pushing of shortening the clamping distance is realized on the combined slender shaft type part, so that the clamping rigidity of the combined slender shaft type part on a grinding machine is increased, when the excircle grinding wheel grinds the excircle, the workpiece does not bend and deform in the axial direction, and the processing precision of the part is easily ensured;
2. the stable jacking of shortening the clamping distance of the combined slender shaft type part is realized through the hollow structures of the hollow center of the tail frame and the hollow movable sleeve of the tail frame in the scheme, the structure is simple, the operation is convenient, the processing efficiency is improved, and the product processing quality is ensured.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of the combined slender shaft parts of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one.. said element does not exclude the presence of other like elements in the process, method, article or apparatus that comprises the element.
Referring to fig. 1-2, in one embodiment of the present invention,
the workpiece jacking structure with the hollow center capable of shortening the clamping distance comprises a headstock center 2 and a tailstock hollow center 7, wherein the headstock center 2 is elastically installed inside a headstock 1 of an external grinding machine through a taper sleeve, the tailstock hollow center 7 is fixedly installed in an inner cavity at the front end of a tailstock hollow movable sleeve 5 through screws, a center end 8 at the front end of the tailstock hollow center 7 extends out of the tailstock hollow movable sleeve 5, the tailstock hollow movable sleeve 5 is rotatably installed inside a tailstock shell 3 through a linear bearing 4, a jacking rod structure 6 is arranged at the rear end inside the tailstock shell 3, and the jacking rod structure 6 is fixedly connected with the rear end of the tailstock hollow movable sleeve 5 and used for applying axial force to the tailstock hollow movable sleeve 5 and the tailstock hollow center 7 at the front end.
The inner part of the tailstock hollow center 7 is of a hollow structure, the center end 8 of the tailstock hollow center 7 is also of a through hole structure communicated with the inner part in a hollow mode, the tailstock hollow movable sleeve 5 is of a hollow structure, and the headstock center 2 and the tailstock hollow center 7 tightly support and clamp the combined slender shaft part 10 on the excircle grinding machine. As shown in fig. 2, the combined slender shaft type part 10 is a slender structure formed by connecting and combining the ends of a large-diameter part 11 and a small-diameter part 12, the small-diameter part 12 in the combined slender shaft type part 10 extends into the tail frame hollow center 7 and the tail frame hollow movable sleeve 5 through a through hole structure at the front end of the tail frame hollow center 7, and the tail frame hollow center 7 and the head frame center 2 respectively tightly press two ends of the large-diameter part 11 in the combined slender shaft type part 10, so that stable pressing for shortening the clamping distance of the combined slender shaft type part 10 is realized.
In the utility model, the tail frame hollow center 7 and the tail frame hollow movable sleeve 5 are both designed into hollow structures, when the combined slender shaft parts 10 are clamped for cylindrical grinding, the small-diameter parts 12 in the combined slender shaft parts 10 are extended into the tail frame hollow center 7 and the tail frame hollow movable sleeve 5 through the through hole structure at the front end of the tail frame hollow center 7, the tail frame hollow center 7 and the headstock center 2 respectively tightly push the two ends of the large-diameter parts 11 in the combined slender shaft parts 10, then the stable pushing of the combined slender shaft parts 10 for shortening the clamping distance is realized, the clamping rigidity of the combined slender shaft parts 10 on a grinding machine is increased, when the excircle is ground by an excircle grinding wheel, the workpiece cannot be bent and deformed axially, the processing precision of the parts is ensured easily, the structure is simple, the operation is convenient, the processing efficiency is improved, the processing quality of the product is ensured.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (3)
1. The hollow center shortens work piece top tight structure of centre gripping distance, including headstock top (2) and tailstock hollow center (7), install inside cylindrical grinder headstock (1) headstock (2), tailstock hollow center (7) fixed mounting is in tailstock hollow movable sleeve (5) front end, the hollow movable sleeve (5) of tailstock are installed inside tailstock casing (3), its characterized in that: the combined slender shaft part clamping device is characterized in that the inside of the tail frame hollow center (7) is of a hollow structure, the center end (8) of the tail frame hollow center (7) is also of a through hole structure communicated with the inside of the tail frame hollow center in a hollow mode, the tail frame hollow movable sleeve (5) is of a hollow structure, the combined slender shaft part (10) is tightly clamped on an excircle grinding machine through the head frame center (2) and the tail frame hollow center (7), the combined slender shaft part (10) is of a slender structure formed by connecting and combining a large-diameter part (11) and a small-diameter part (12) in a combined slender shaft part (10), the small-diameter part (12) in the combined slender shaft part (10) stretches into the inside of the tail frame hollow center (7) and the inside of the tail frame hollow movable sleeve (5) through the through hole structure at the front end of the tail frame hollow center (7), and the tail frame center (2) respectively tightly push the two ends of the large-diameter part (11) in the combined slender shaft part (10) to clamp the combined slender shaft And (5) stably jacking the holding distance.
2. The workpiece tightening structure with the hollow center having the shortened clamping distance according to claim 1, characterized in that: the tailstock hollow center (7) is fixedly installed in an inner cavity at the front end of the tailstock hollow movable sleeve (5) through a screw, a center end (8) at the front end of the tailstock hollow center (7) extends out of the tailstock hollow movable sleeve (5), the tailstock hollow movable sleeve (5) is rotatably installed inside the tailstock shell (3) through a linear bearing (4), an ejector rod structure (6) is arranged at the rear end inside the tailstock shell (3), and the ejector rod structure (6) is fixedly connected with the rear end of the tailstock hollow movable sleeve (5) and is used for applying axial force to the tailstock hollow movable sleeve (5) and the tailstock hollow center (7) at the front end.
3. The workpiece tightening structure with the hollow center having the shortened clamping distance according to claim 1, characterized in that: the headstock finials (2) are elastically installed inside the headstock (1) of the cylindrical grinding machine through taper sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020417434.2U CN211841241U (en) | 2020-03-27 | 2020-03-27 | Workpiece jacking structure with hollow center capable of shortening clamping distance |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020417434.2U CN211841241U (en) | 2020-03-27 | 2020-03-27 | Workpiece jacking structure with hollow center capable of shortening clamping distance |
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| CN211841241U true CN211841241U (en) | 2020-11-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658763A (en) * | 2020-12-30 | 2021-04-16 | 四川明日宇航工业有限责任公司 | Machining method for thin-wall long pipe casting |
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2020
- 2020-03-27 CN CN202020417434.2U patent/CN211841241U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112658763A (en) * | 2020-12-30 | 2021-04-16 | 四川明日宇航工业有限责任公司 | Machining method for thin-wall long pipe casting |
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