CN218799164U

CN218799164U - Positioning device for turning screw rod part

Info

Publication number: CN218799164U
Application number: CN202222834358.7U
Authority: CN
Inventors: 张彦岗; 李二红; 张仓平; 张晓辉; 吉海叶; 祁慧青
Original assignee: Shanxi Diesel Engine Industries Co Ltd
Current assignee: Shanxi Diesel Engine Industries Co Ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-04-07
Anticipated expiration: 2032-10-26

Abstract

The utility model provides a positioner is used in turning screw pole portion, including the sleeve and the locating piece that are connected, but be provided with axial displacement's top in the locating piece, be provided with in the sleeve and be used for removing top ejector pin, the ejector pin overcoat has cup jointed the spring, the one end of ejector pin is provided with the plug with muffjoint, and the other end is provided with the stopper with top, the spring setting is between plug and stopper, the outer terminal surface department of locating piece is provided with the plum blossom cover. Positioner for realize top and the reliable location of locating piece terminal surface and work piece and designed spring axial elasticity, accomplish to guarantee top and the reliable contact of work piece and can make work piece and locating piece terminal surface reliable contact again.

Description

Positioning device for turning screw rod part

Technical Field

The utility model belongs to the screw processing equipment field especially relates to a positioner is used in turning screw pole portion.

Background

The length and the coaxiality of the rod part to the central hole are required to be ensured in the processing process of the outer quincunx head screw. At present, the general process adopts lathe machining, and the following two process schemes are adopted:

the first scheme is as follows: and clamping the outer circle of the quincuncial head by using a three-jaw chuck, positioning the end face of the quincuncial head, positioning the center hole of the top of the tail tip, and processing. According to the scheme, the outer circle of the outer circle quincuncial head is a forged blank surface, the outer circle is rough and is used as a reference to have poor machining precision, and the coaxiality of the outer circle axis of the quincuncial head and the axis of the central hole is poor, so that the coaxiality requirement of the outer circle to the axis of the central hole cannot be met during turning.

The second scheme is as follows: the center hole of the double-top pinnacle is adopted, and the outer circle of the plum blossom head is pulled by a deflector rod for processing. The scheme adopts double-top positioning and clamping, and the turning processing is completed by shifting the workpiece by the shifting rod. The positioning mode can meet the requirement of coaxiality, but because the axial reference of the workpiece is on the end face, the center hole has processing errors, the axial accurate positioning cannot be realized, and the batch processing size cannot be guaranteed.

In summary, the positioning methods of the two schemes have defects during processing, mainly due to the fact that the positioning reference is not coincident with the design. In order to ensure the pattern requirements of the part products and meet the manufacturability requirements, the positioning mode needs to be improved. The positioning reference is coincided with the design reference, namely two central holes and end faces are adopted for positioning.

Disclosure of Invention

In view of this, the utility model discloses aim at overcoming the defect among the prior art, provide a turning screw is positioner for pole portion.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a positioning device for a turning screw rod part comprises a sleeve and a positioning block which are connected, wherein an apex capable of moving axially is arranged in the positioning block, an ejector rod used for moving the apex is arranged in the sleeve, a spring is sleeved outside the ejector rod, a plug connected with the sleeve is arranged at one end of the ejector rod, a limiting block is arranged at the other end of the ejector rod and the apex, the spring is arranged between the plug and the limiting block, and a plum blossom sleeve is arranged at the outer end face of the positioning block.

Furthermore, the positioning block and the ejector pin are coaxially arranged.

Furthermore, a thrust bearing is arranged between the spring and the limiting block.

Furthermore, washers are arranged between the spring and the plug and between the spring and the thrust bearing.

Further, the positioning block is in threaded connection with the sleeve.

Further, the plug is in threaded connection with the sleeve.

Further, the periphery of plum blossom cover is provided with two or more than two draw-in grooves, the outer terminal surface of locating piece is provided with the terminal surface with the plum blossom cover and is provided with the cotter hole perpendicularly, the outer peripheral face of locating piece is provided with the screw hole that sets up perpendicularly with the pinhole, the plum blossom cover is fixed a position through the pin that passes mounting hole and cotter hole in proper order and installing the set screw in the screw hole.

Furthermore, two clamping grooves are symmetrically arranged on the periphery of the plum blossom sleeve.

Furthermore, a groove is formed in the plug, the end of the ejector rod extends into the groove, and a through hole communicated with the groove is formed in the outer end face of the plug.

Furthermore, through-hole, recess, ejector pin, thimble, sleeve and locating piece all set up coaxially.

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

(1) Positioner for realize top and the reliable location of locating piece terminal surface and work piece and designed spring axial elasticity, accomplish to guarantee top and the reliable contact of work piece and can make work piece and locating piece terminal surface reliable contact again.

(2) Through production verification, positioner can realize the lathe work of this type of part in putting into production, to the work piece of different specifications and the lathe of different models, need adjustment plum blossom cover size of a dimension, locating piece excircle size of a dimension and whole device length of pertinence when using, can be in order to satisfy the production and processing of different parts.

Drawings

The accompanying drawings, which form a part of the present disclosure, are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and together with the description serve to explain the present disclosure. In the drawings:

fig. 1 is a schematic view of an internal structure of a positioning device for a turning screw rod according to an embodiment of the present invention;

fig. 2 is a schematic structural view of the plum blossom sleeve of the present invention.

Description of reference numerals:

1. plugging by screwing; 2. a gasket; 3. a spring; 4. a sleeve; 5. a top rod; 6. a bearing; 7. a tip; 8. positioning blocks; 9. a set screw; 10. a cylindrical pin; 11. plum blossom sleeve; 12. a workpiece; 13. a limiting block; 14. a card slot; B. a central bore.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should 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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

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

As shown in fig. 1, the utility model provides a turning screw is positioner for pole portion, but be provided with axial displacement's top 7 in the locating piece 8 including threaded connection's sleeve 4 and locating piece 8, be provided with in the sleeve 4 and be used for removing top 7's ejector pin 5, the outer terminal surface department of locating piece 8 is provided with plum blossom cover 11, realizes top 7's axial displacement through removing ejector pin 5. The center hole B of the left end face of the workpiece 12 is positioned by the center 7, and the end face of the positioning block 8 is attached to the end face of the plum blossom head of the workpiece 12, so that positioning is realized.

The utility model discloses an among the specific embodiment, optionally, 5 overcoat pegs graft of ejector pin has spring 3, and the one end of ejector pin 5 is provided with plug 1 with 4 threaded connection of sleeve, and the other end is provided with stopper 13 with top 7, stopper 13 and the integrative fixed connection of ejector pin 5 are provided with the guiding hole with the thimble adaptation in the locating piece 8, and spring 3 sets up between plug 1 and stopper 13. The spring 3 is compressed by rotating the plug 1, so that the spring 3 extrudes the ejector rod 5 and the limiting block 13, the tip 7 is extruded, and the tip 7 generates axial displacement.

The utility model discloses a positioner is used in turning screw pole portion, for guaranteeing the processing stability, locating piece 8 and top coaxial setting.

The utility model discloses a positioner is used in turning screw pole portion for further guarantee the processing stability, will include the equal coaxial setting of part in through-hole, recess, ejector pin 5, top 7, sleeve 4 and locating piece 8.

The utility model discloses a positioner is used in turning screw pole portion for guaranteeing can relative motion between spring 3 and the ejector pin 5, prevent that spring 3 from producing in compression process and twisting, be provided with footstep bearing 6 between spring 3 and the stopper 13.

The utility model discloses a positioner is used in turning screw pole portion, for increase area of contact, reduce pressure protection part, all be provided with packing ring 2 between spring 3 and plug 1 and between footstep bearing 6.

In order to fix the plum blossom sleeve 11, two or more than two fastening grooves 14 are provided on the outer circumference of the plum blossom sleeve 11, and specifically, in a specific embodiment, as shown in fig. 2, two fastening grooves 14 may be symmetrically provided on the outer circumference of the plum blossom sleeve 11. The outer end face of the positioning block 8 is provided with a pin hole perpendicular to the end face of the quincuncial sleeve 11, the outer peripheral face of the positioning block 8 is provided with a screw hole perpendicular to the pin hole, and the quincuncial sleeve 11 is positioned through a pin which sequentially penetrates through the mounting hole and the pin hole and a positioning screw 9 which is mounted in the screw hole.

The utility model discloses a positioner is provided with the recess in plug 1, and in the tip of ejector pin 5 extended to the recess, plug 1's outer terminal surface was provided with the through-hole with the recess intercommunication.

The utility model discloses a work engineering does:

a center hole B of the left end face of a workpiece 12 to be machined is positioned by a tip 7, the tip 7 is adjusted in axial position by a spring 3 on a sleeve 4 to ensure that the workpiece 12 is reliably pressed against the center hole B, the workpiece 12 is pressed against the center hole B of the left end of the tip 7 on a machine tool, so that the end face of a quincuncial head of the workpiece 12 is reliably attached to the end face of a positioning block 8, and the center hole of the right end face of the workpiece is matched with the center hole of a tailstock. Thereby achieving the positioning of the center hole B and the end face of the left end of the workpiece 12.

The outer circle of the positioning block 8 is grasped by a lathe three-jaw chuck of the whole positioning device, the quincuncial sleeve 11 pulls the quincuncial head of the workpiece 12, and the positioning device and the workpiece 12 rotate together with the three-jaw chuck to achieve turning of the rod part.

The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a turning screw is positioner for pole portion which characterized in that: the positioning device comprises a sleeve and a positioning block which are connected, wherein an apex capable of moving axially is arranged in the positioning block, an ejector rod used for moving the apex is arranged in the sleeve, a spring is sleeved outside the ejector rod, a plug connected with the sleeve is arranged at one end of the ejector rod, a limiting block is arranged at the other end of the ejector rod and the apex, the spring is arranged between the plug and the limiting block, and a quincuncial sleeve is arranged on the outer end face of the positioning block.

2. The positioning device for the shank of a turning screw according to claim 1, characterized in that: the positioning block and the tip are coaxially arranged.

3. The positioning device for the shank of a turning screw according to claim 1, wherein: and a thrust bearing is arranged between the spring and the limiting block.

4. The positioning device for the shank of a turning screw according to claim 3, characterized in that: and gaskets are arranged between the spring and the plug and between the spring and the thrust bearing.

5. The positioning device for the shank of a turning screw according to claim 1, wherein: the positioning block is in threaded connection with the sleeve.

6. The positioning device for the shank of a turning screw according to claim 1, characterized in that: the plug is in threaded connection with the sleeve.

7. The positioning device for the shank of a turning screw according to claim 1, characterized in that: the periphery of plum blossom cover is provided with two or more draw-in grooves, the outer terminal surface of locating piece is provided with the terminal surface with the plum blossom cover and is provided with the cotter hole perpendicularly, the outer peripheral face of locating piece is provided with the screw hole that sets up perpendicularly with the pinhole, the plum blossom cover is fixed a position through the pin that passes mounting hole and cotter hole in proper order and installing the set screw in the screw hole.

8. The positioning device for the shank of a turning screw according to claim 7, wherein: two clamping grooves are symmetrically arranged on the periphery of the plum blossom sleeve.

9. The positioning device for the shank of a turning screw according to claim 1, characterized in that: the plug is internally provided with a groove, the end part of the ejector rod extends into the groove, and the outer end face of the plug is provided with a through hole communicated with the groove.

10. The positioning device for the shank of a turning screw according to claim 9, wherein: the through hole, the groove, the ejector rod, the ejector pin, the sleeve and the positioning block are all coaxially arranged.