CN218776114U

CN218776114U - Piston finish milling breach clamping device

Info

Publication number: CN218776114U
Application number: CN202222777234.XU
Authority: CN
Inventors: 杨芳; 王敏辉
Original assignee: Jiangnan Industries Group Co Ltd
Current assignee: Jiangnan Industries Group Co Ltd
Priority date: 2022-10-20
Filing date: 2022-10-20
Publication date: 2023-03-31
Anticipated expiration: 2032-10-20

Abstract

The utility model discloses a piston finish milling breach clamping device, including the base disc, press from both sides the cover seat, elasticity presss from both sides cover and locating pin, press from both sides the cover seat and set firmly on the central point of base disc top surface puts, and the symmetry set up a pair of confession locating pin radially pass along the base disc and with the first pinhole of waiting to mill the pinhole looks adaptation of piston on it, the internal diameter that elasticity pressed from both sides the cover and the external diameter looks adaptation of waiting to mill the piston, the vertical extrusion of elasticity clamp cover is inserted and is arranged in pressing from both sides the cover seat, and set up a pair of second pinhole corresponding with first pinhole on it, the locating pin passes first pinhole and second pinhole and presss from both sides the cover and links together elasticity clamp and cover seat. The utility model provides a how can not damaged and accurately carry out the technical problem who stabilizes the fastening to the piston, have that the clamping is swift, the clamping is accurate and can effectively guarantee advantages such as machining precision and quality.

Description

Piston finish milling breach clamping device

Technical Field

The utility model belongs to the technical field of clamping device technique and specifically relates to indicate a piston finish milling breach clamping device.

Background

Before a milling machine is used for finely milling a notch on the top end of a piston for a micro aircraft engine, a clamping device is required to be adopted to fasten the piston at a machining position. At present, a multi-jaw chuck is usually adopted to fasten the multi-jaw chuck, obviously, the clamping is time-consuming and the precision is low, the fastening force applied to a piston is uneven, the piston is inclined in the milling process, and the situation that the part of the piston contacting with the jaw is deformed or even damaged due to overlarge stress easily occurs, so that the production efficiency is low, the processing precision is low and the quality is poor.

SUMMERY OF THE UTILITY MODEL

In view of the not enough of existence among the background art, the utility model provides a piston finish milling breach clamping device to solve how can not damaged and accurately to the piston stabilize the fastening.

In order to solve the technical problem, the utility model provides a piston finish milling breach clamping device, including base disc, clamp cover seat, elasticity clamp cover and locating pin, clamp cover seat sets firmly on the central point of base disc top surface puts, and the symmetry has seted up a pair of confession on it the locating pin is followed the base disc radially passes and with the first pinhole of waiting to mill the pinhole looks adaptation of piston, elasticity clamp cover the internal diameter with the external diameter looks adaptation of waiting to mill the piston, the vertical extrusion of elasticity clamp cover is inserted and is arranged in clamp cover seat, and seted up on it a pair of with the corresponding second pinhole of first pinhole, the locating pin passes first pinhole reaches the second pinhole will elasticity clamp cover with clamp cover seat links together.

In an embodiment of the present invention, the fastening screw is engaged with the thread on the jacket base along the radial direction, the free end of the screw rod of the fastening screw faces the outer peripheral wall of the elastic jacket, and when the elastic jacket is in the working state, the free end of the screw rod of the fastening screw abuts against the outer peripheral wall of the elastic jacket.

In an embodiment of the present invention, the top end of the elastic clamping sleeve is provided with an indicating notch which is located on the same straight line with the second pin hole.

In an embodiment of the present invention, the base plate and the clamping sleeve seat are integrally formed.

In one embodiment of the present invention, the bottom of the base plate is provided with a pair of orientation keys symmetrically arranged about the center thereof by the cooperation of the bolt and the nut.

Compared with the prior art, the technical scheme of the utility model have following advantage: the utility model transmits the fastening force applied by the jacket seat to the piston to be milled in a way that the elastic jacket coaxially and completely covers the periphery of the piston to be milled, so that the fastening force applied to the piston to be milled is uniform, and the condition that the piston to be milled is deformed or even damaged due to overlarge stress is effectively avoided; and the first pin hole and the second pin hole which are matched with the pin holes of the piston to be milled are correspondingly arranged on the clamping sleeve seat and the elastic clamping sleeve respectively through the positioning pin, so that the clamping is quick and accurate, the piston is stably fastened without damage and accurately, the production efficiency is greatly improved, and the processing precision and quality are ensured.

Drawings

In order to make the content of the invention more clearly understood, the invention will now be described in further detail with reference to specific embodiments thereof, taken in conjunction with the accompanying drawings, in which

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of the present invention illustrating the use state of clamping the piston to be milled;

fig. 3 is a schematic structural view of the elastic jacket of the present invention;

FIG. 4 is a schematic view of a piston to be milled;

the specification reference numbers indicate: 1. the base plate comprises a base plate 2, a clamping sleeve seat 21, a first pin hole 3, an elastic clamping sleeve 31, a second pin hole 32, an indication notch 4, a positioning pin 5, a fastening screw 6 and an orientation key.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Therefore, the directional terminology used is for the purpose of description and is not intended to be limiting, and moreover, like reference numerals will be used to refer to like elements throughout.

Referring to fig. 1, 2, 3 and 4, the piston finish milling gap clamping device includes a base disc 1, a jacket seat 2, an elastic jacket 3 and a positioning pin 4, wherein the jacket seat 2 is fixedly arranged at the center of the top surface of the base disc 1, and is symmetrically provided with a pair of first pin holes 21 for the positioning pin 4 to pass through along the radial direction of the base disc 1 and to be matched with the pin hole of a piston to be milled, the inner diameter of the elastic jacket 3 is matched with the outer diameter of the piston to be milled, the elastic jacket 3 is vertically extruded and inserted into the jacket seat 2 and is provided with a pair of second pin holes 31 corresponding to the first pin holes 21, and the positioning pin 4 passes through the first pin holes 21 and the second pin holes 31 to connect the elastic jacket 3 and the jacket seat 2 together. The positioning pin 4 is matched with a first pin hole 21 and a second pin hole 31 which are correspondingly matched with pin holes of a piston to be milled and are respectively arranged on the jacket seat 2 and the elastic jacket 3, so that the piston to be milled is inserted into the elastic jacket 3 during clamping, and then the positioning pin 4 passes through the first pin hole 21, the pin hole of the piston to be milled and the second pin hole 31 to fasten the elastic jacket 3, the jacket seat 2 and the piston to be milled together, so that the clamping is quick and accurate; and the fastening force applied by the jacket seat 2 is transmitted to the piston to be milled in a mode that the elastic jacket 3 is coaxially and fully wrapped on the periphery of the piston to be milled, so that the fastening force applied to the piston to be milled is uniform, the condition that the piston is deformed or even damaged due to overlarge stress is effectively avoided, and the technical effect of stably fastening the piston without damage is realized.

The clamp sleeve seat 2 is engaged with a fastening screw 5 arranged along the radial direction of the clamp sleeve seat in a threaded manner, the free end of a screw rod of the fastening screw 5 faces the peripheral wall of the elastic clamp sleeve 3, and when the clamp sleeve seat is in a working state, the free end of the screw rod of the fastening screw 5 is abutted against the peripheral wall of the elastic clamp sleeve 3, so that the fastening reliability is improved.

The top end of the elastic jacket 3 is provided with an indicating notch 32 which is positioned on the same straight line with the second pin hole 31, so that the clamping convenience and efficiency are further improved.

The base plate 1 and the jacket seat 2 are integrally formed, so that the structure is compact, and the strength of the jacket seat 2 is improved.

The bottom of the base plate 1 is provided with a pair of orientation keys 6 symmetrically arranged about the center thereof through the cooperation of bolts and nuts, so that the arrangement improves the convenience and efficiency of mounting the clamping device on a milling machine workbench.

The utility model discloses a theory of operation: when the milling device is used, firstly, the positioning pin 4 is pulled out, the elastic jacket 3 is taken down, then, a piston to be milled is inserted into the elastic jacket 3, the pin hole of the piston to be milled is coaxial with the second pin hole 31, then, the elastic jacket 3 inserted with the piston to be milled is pressed and inserted into the jacket seat 2, the first pin hole 21, the second pin hole 31 and the pin hole of the piston to be milled are coaxial, in the pressing and inserting process, the elastic jacket 3 is radially and inwardly contracted by the fastening of the jacket seat 2 to clamp the piston to be milled, and finally, the positioning pin 4 penetrates through the first pin hole 21, the pin hole of the piston to be milled and the second pin hole 31 to fasten the elastic jacket 3, the jacket seat 2 and the piston to be milled together.

In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed" and "connected" should be interpreted 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 as a specific case by those skilled in the art.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications can be made without departing from the scope of the invention.

Claims

1. A piston finish-milling notch clamping device is characterized by comprising a base plate, a jacket seat, an elastic jacket and a positioning pin, wherein the jacket seat is fixedly arranged at the central position of the top surface of the base plate, a pair of first pin holes for the positioning pin to radially penetrate along the base plate and to be matched with a pin hole of a piston to be milled are symmetrically formed in the jacket seat, the inner diameter of the elastic jacket is matched with the outer diameter of the piston to be milled, the elastic jacket is vertically extruded and inserted into the jacket seat, a pair of second pin holes corresponding to the first pin holes are formed in the elastic jacket seat, and the positioning pin penetrates through the first pin holes and the second pin holes to connect the elastic jacket and the jacket seat together.

2. The piston finish-milling notch clamping device according to claim 1, wherein a fastening screw arranged along the radial direction of the clamping sleeve seat is in threaded engagement with the clamping sleeve seat, a free end of a screw rod of the fastening screw faces the outer peripheral wall of the elastic clamping sleeve, and in an operating state, the free end of the screw rod of the fastening screw abuts against the outer peripheral wall of the elastic clamping sleeve.

3. The piston finish milling gap clamping device as claimed in claim 1, wherein the top end of the elastic jacket is provided with an indicating gap which is in the same line with the second pin hole.

4. The piston finish milling gap clamping device according to claim 1, wherein the base disc and the jacket base are integrally formed.

5. The piston finish milling gap clamping device as claimed in claim 1, wherein the bottom of the base plate is provided with a pair of orientation keys symmetrically arranged about the center thereof by means of the cooperation of a bolt and a nut.