CN219786943U

CN219786943U - Static shaft shoulder assembly

Info

Publication number: CN219786943U
Application number: CN202321058036.6U
Authority: CN
Inventors: 陈翔; 陈友展
Original assignee: Ningbo Youzhi Machinery Technology Co ltd
Current assignee: Ningbo Youzhi Machinery Technology Co ltd
Priority date: 2023-05-05
Filing date: 2023-05-05
Publication date: 2023-10-03
Anticipated expiration: 2033-05-05

Abstract

The utility model relates to a static shaft shoulder assembly, and belongs to the technical field of friction welding. This quiet shoulder assembly includes location platform portion and frustum portion, frustum portion has the chamber of holding that is used for supplying the stirring head to arrange, the wall of holding the chamber is the cambered surface of indent, frustum portion has at least one intercommunication hold the chip removal hole in chamber, the chip removal hole includes chip removal roof, chip removal diapire and connects chip removal roof with chip removal diapire and to the reaming section of both sides expansion, chip removal roof with location platform portion orientation the terminal surface of frustum portion flushes, chip removal diapire with hold the chamber diapire and flush. The utility model has the effect of increasing the discharging space.

Description

Static shaft shoulder assembly

Technical Field

The utility model relates to the technical field of friction welding, in particular to a static shaft shoulder assembly.

Background

The static shaft shoulder is an auxiliary tool which is arranged on the stirring shaft and ensures that the stirring head and the area to be welded are matched into a butt joint mode.

The traditional static shaft shoulder comprises a positioning step for being installed with the stirring head and an installation part arranged at the bottom of the positioning step. The mounting part is internally provided with a containing cavity for arranging the stirring head. The mounting portion includes a vertical section connected to the positioning step and an inclined section connected to the vertical section and inclined to the axis of the stirring head. The static shaft shoulder is provided with a static shaft shoulder hole for the end part of the stirring head to extend out. The static shaft shoulder hole is in clearance fit with the stirring head, namely the inner diameter of the static shaft shoulder hole is larger than the outer diameter of the end part of the stirring head. During welding of the stirring head, some flying chips are generated, and these flying chips fly into the accommodating chamber along the gap between the static shoulder hole and the stirring head.

The conventional static shoulder discharging mode is generally two, one is to make a tangential plane on the vertical section, a chip discharge port communicated with the accommodating chamber is formed on the tangential plane, and the other is to bore a round hole on the side wall of the mounting part.

The novel static shaft shoulder with the axial size smaller than that of the traditional static shaft shoulder reduces the arrangement of the vertical section compared with the traditional static shaft shoulder, and the positioning step is directly connected with the inclined end. When the two discharging modes are applied to the novel static shaft shoulder, the inner wall of the inclined section is in a conical wall shape, so that the space of the inner cavity is smaller, and a chip removal port formed after cutting is smaller; meanwhile, the axial size of the novel static shaft shoulder is smaller, so that the diameter of the bored circular hole is limited by the axial size, and the diameter of the bored circular hole is smaller. The probability of the material clamping phenomenon in the inner cavity of the static shaft shoulder can be improved by the two discharging modes. Therefore, it is necessary to improve the structure of the novel static shoulder to increase the space for discharging.

Disclosure of Invention

In order to improve the scrap discharging space, the utility model provides a static shaft shoulder assembly.

The utility model provides a static shaft shoulder assembly which adopts the following technical scheme:

the utility model provides a quiet shoulder assembly, includes location bench portion and frustum portion, frustum portion has the chamber of holding that is used for supplying the stirring head to arrange, the wall of holding the chamber is the cambered surface of indent, frustum portion has at least one intercommunication hold the chip removal hole in chamber, the chip removal hole includes chip removal roof, chip removal diapire and connects chip removal roof with chip removal diapire and to the reaming section of both sides expansion, chip removal roof with location bench portion orientation the terminal surface of frustum portion flushes, chip removal diapire with hold the chamber diapire and flush.

Through adopting above-mentioned technical scheme, dead axle shoulder seat is through location bench portion and stirring head fixed mounting, and the stirring head main part is arranged in the holding intracavity of frustum portion, when the stirring head carries out friction welding, and the piece that the welding produced enters into the holding intracavity from the dead axle shoulder hole, discharges the piece through the chip removal hole. The inner diameter of the chip removing hole formed by boring the round hole is limited by the axial length of the frustum portion, the chip removing hole adopted by the utility model is consistent with the maximum diameter of the hole formed by boring the round hole in the vertical direction, and the reaming sections extending to two sides are further arranged in the horizontal direction, so that the discharging space is increased, and the probability of chip blocking of the accommodating cavity is reduced.

Optionally, two chip removal holes are provided, and the projections of the two chip removal holes in the vertical direction are mutually overlapped.

Through adopting above-mentioned technical scheme, disclose chip removal hole's specific quantity and chip removal hole's distribution, the projection of two chip removal holes coincide each other for link up frustum portion level in a certain horizontal direction, improved the smoothness when the piece is discharged.

Optionally, the penetrating directions of the two chip removal holes are mutually perpendicular to the axial direction of the stirring head.

Through adopting above-mentioned technical scheme, compare with the chip removal hole of slope arrangement, the axis direction of chip removal hole is perpendicular with the axis of stirring head, can obtain the chip removal hole of maximum axial internal diameter, increase the discharge space, reduce the emergence that holds the intracavity card bits condition.

Optionally, the projection of the reaming section in the vertical direction is an arc surface.

By adopting the technical scheme, the projection of the expansion section is the arc surface, so that the chip discharging device can play a guiding role in chip discharging and improve chip discharging efficiency.

Optionally, the clearance between the reaming sections at both sides in the chip removal hole is larger than the hole distance of the static shaft shoulder.

Optionally, the frustum portion is provided with the cutting face in one side of chip removal hole.

Through adopting above-mentioned technical scheme, reduced the thickness of chip removal hole for the intercommunication distance in the space of holding chamber and outside reduces, thereby improves the speed of chip removal.

Optionally, the side walls of the positioning table part are symmetrically provided with flat sections.

Through adopting above-mentioned technical scheme, the setting of plain noodles for when carrying out the installation of quiet shaft shoulder and stirring head, make things convenient for installer to use the instrument clamp on two plain noodles, improve the installation effectiveness of quiet shaft shoulder and stirring.

Optionally, the bottom of frustum portion is provided with the circular arc chamfer at quiet shoulder hole outward flange.

Through adopting above-mentioned technical scheme, the setting of circular arc chamfer for when the stirring head carries out friction welding, can reduce the probability that produces overlap and burr when the bottom of quiet shoulder and welding seam contact.

Optionally, the stirring device further comprises a mounting part connected to the top surface of the positioning table part, wherein the mounting part is communicated with the accommodating cavity, and the bottom of the mounting part is provided with a guiding surface for guiding the stirring head to be inserted.

Through adopting above-mentioned technical scheme, disclose the mounting means of quiet shoulder and stirring head, the setting of guide surface on the installation department can play the guide effect when quiet shoulder and stirring head installation, reduces the condition that the butt appears in the opening lateral wall of the tip of stirring head and installation department.

In summary, the present utility model includes at least one of the following beneficial technical effects:

1. compared with the novel static shaft shoulder with smaller axial size, the static shaft shoulder assembly has the advantages that the chip removal holes are formed in the frustum part, and are larger than chip removal holes formed by the traditional tangential plane and the boring circular hole, so that the discharge space is enlarged, and chips in the accommodating cavity are conveniently discharged;

2. according to the utility model, through the arrangement of the cutting surface, the thickness of the chip removal holes is reduced, the communication distance between the discharging space and the external space is reduced, and the discharging speed of chips is improved;

3. the utility model can be convenient for installers by arranging the plane section on the positioning table part.

Drawings

FIG. 1 is a schematic view of the overall structure of an embodiment of the present utility model and a stirring head assembled.

FIG. 2 is a schematic cross-sectional view of a static shoulder in an embodiment of the utility model.

FIG. 3 is a schematic view of the overall structure of a static shoulder according to an embodiment of the present utility model.

Reference numerals illustrate: 1. a positioning table portion; 11. positioning the step surface; 12. cutting the dough flat; 2. a frustum portion; 21. a receiving chamber; 211. a first inner cavity surface; 212. a second inner cavity surface; 22. a static shoulder hole; 23. chip removal holes; 231. a chip removal top wall; 232. a chip removal bottom wall; 233. reaming section; 24. cutting a material surface; 241. cutting a material circular arc surface; 25. arc chamfering; 3. a mounting part; 31. a threaded portion; 32. a guide surface; 4. an organ cover; 41. a heat radiation hole; 411. a lower heat dissipation hole; 412. an upper heat dissipation hole; 5. a stirring head.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-3.

The embodiment of the utility model discloses a static shaft shoulder assembly.

Referring to fig. 1 and 2, a stationary shoulder assembly includes a positioning table portion 1, a frustum portion 2 provided at the bottom of the positioning table portion 1, and a mounting portion 3 provided at the top of the positioning table portion 1. The positioning table part 1, the frustum part 2 and the mounting part 3 are formed uniformly. The positioning step part 1 is in a step shape, the outer diameters of the positioning step part 1 are larger than those of the frustum part 2 and the mounting part 3, and the positioning step part 1 is provided with a positioning step surface 11 at the bottom surface close to the frustum part 2.

Referring to fig. 1 and 2, the outer side wall of the frustum portion 2 is tapered inwardly. The inside of the frustum portion 2 is provided with a containing cavity 21 for arranging the stirring head 5, the top wall of the containing cavity 21 penetrates through the end faces of the two sides of the mounting portion 3, the bottom wall of the containing cavity 21 is provided with a static shoulder hole 22 for extending out the end of the stirring head 5, and the stirring head 5 is in clearance fit with the static shoulder hole 22. The inner wall of the accommodating cavity 21 is a concave cambered surface, and the inner wall of the accommodating cavity 21 comprises a first inner cavity surface 211 and a second inner cavity surface 212 along the height direction. In this embodiment, the first inner cavity surface 211 is a spherical surface, and the second inner cavity surface 212 is a conical surface. In other embodiments, the first and second interior surfaces 211, 212 have a variety of combinations, such as: the first inner cavity surface 211 is a conical surface, and the second inner cavity surface 212 is a spherical surface; the first inner cavity surface 211 and the second inner cavity surface 212 are spherical surfaces or conical surfaces.

Referring to fig. 3, the frustum portion 2 has at least two chip ejection holes 23 in a side wall thereof communicating with the accommodating chamber 21. The chip ejection hole 23 includes a chip ejection top wall 231 flush with the positioning step surface 11, a chip ejection bottom wall 232 flush with the bottom wall of the accommodating chamber 21, and a reamer section 233 connecting the chip ejection top wall 231 and expanding to both sides. In the present embodiment, the frustum portion 2 has two chip ejection holes 23, and projections of the two chip ejection holes 23 in the vertical direction coincide with each other, i.e., the two chip ejection holes 23 penetrate both sides of the frustum portion 2 in one horizontal direction. Wherein the axis of the chip removing hole 23 in the penetrating direction is perpendicular to the rotation axis of the stirring head 5.

The projection of the reamer sections 233 in the vertical direction is an arc surface expanding outward, and the clearance between the two reamer sections 233 in the chip removing hole 23 is larger than the pitch of the static shoulder hole 22. The diameter of the discharge hole formed by boring the round hole on the frustum portion 2 is limited by the axial dimension of the frustum portion 2, and the maximum diameter is the distance between the positioning step surface 11 and the bottom wall of the accommodating cavity 21, but the arrangement of the reaming section 233 in the chip removal hole 23 in the utility model improves the inner diameter of the chip removal hole 23 in the horizontal direction, so that the discharge space is increased.

The frustum portion 2 is further provided with a cutting surface 24 on the same outer side wall with the chip removal hole 23, the top of the cutting surface 24 is abutted to the positioning step surface 11, and a cutting circular arc surface 241 is arranged at the joint of the cutting surface 24 and the positioning step surface 11. The arrangement of the cutting surface 24 reduces the thickness of the chip removal holes 23 in the horizontal direction, so that the communication distance between the accommodating cavity 21 and the external space is shortened, and the chip removal efficiency is improved.

The bottom of the frustum portion 2 is further provided with an arc chamfer 25 at the outer edge of the static shoulder hole 22, so that the probability of burrs on a welding line caused by contact between the static shoulder and an object to be welded is reduced.

Two plane surfaces 12 are symmetrically arranged on the side wall of the positioning table part 1. The axial extension direction of the plain cut face 12 is parallel to the vertical direction, and the projection on the vertical direction is rectangular, so that the connection fixation of the static shaft shoulder and the stirring head 5 is conveniently carried out by an installer at the two plain cut faces 12 by using an installation tool.

Referring to fig. 2, the mounting portion 3 is generally hollow and cylindrical in shape communicating with the accommodating chamber 21, and the side wall of the opening of the mounting portion 3 away from the positioning table portion 1 has a guide surface 32, the guide surface 32 being inclined inward toward the axis of the frustum portion 2 so that the end portion of the stirring head 5 can be conveniently inserted into the accommodating chamber 21.

Referring to fig. 1 and 2, a screw portion 31 is provided on the outer side wall of the mounting portion 3, and an organ cover 4 for improving the heat radiation effect of the stirring head 5 is screwed to the screw portion 31. The bottom end surface of the organ cover 4 is in limit abutting connection with the top surface of the positioning bench part 1, which is far away from the positioning step surface 11, and the bottom outer diameter of the organ cover 4 is consistent with the outer diameter of the positioning bench part 1. The side wall of the organ cover 4 is provided with a plurality of heat dissipation holes 41 for ventilation at intervals in the circumferential direction, and the heat dissipation holes 41 axially comprise a lower heat dissipation hole 411 and an upper heat dissipation hole 412. In this embodiment, the organ cover 4 has eight lower heat dissipation holes 411 and eight upper heat dissipation holes 412, the lower heat dissipation holes 411 are circumferentially and alternately distributed on one side of the organ cover 4 near the positioning table portion 1, the upper heat dissipation holes 412 are circumferentially and alternately distributed on one side of the organ cover 4 far from the positioning table portion 1, and each upper heat dissipation hole 412 is located between the adjacent lower heat dissipation holes 411. One end of the organ cover 4, which is far away from the positioning table part 1, is fixedly connected with the main shaft of the stirring head 5 through a flange.

The implementation principle of the static shaft shoulder assembly provided by the embodiment of the utility model is as follows: the positioning table part 1 and the organ cover 4 are fixedly connected through threads, then the organ cover 4 is connected with a main shaft flange, at the moment, the whole stirring head 5 is positioned in an inner cavity formed by the frustum part 2 and the organ cover 4, and the end part of the stirring head 5 extends out of the static shaft shoulder hole 22; during friction welding, chips generated by welding enter the accommodating cavity 21 from a gap between the stirring head 5 and the static shoulder hole 22, and discharge is completed through the chip discharging hole 23.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a quiet shoulder assembly, includes location bench portion (1) and frustum portion (2), frustum portion (2) have and are used for supplying holding chamber (21) that stirring head (5) arranged, the wall that holds chamber (21) is the cambered surface of indent, a serial communication port, frustum portion (2) have at least one intercommunication hold chip removal hole (23) of chamber (21), chip removal hole (23) include chip removal roof (231), chip removal diapire (232) and connect chip removal roof (231) with chip removal diapire (232) and to both sides expanded reaming section (233), chip removal roof (231) with location bench portion (1) orientation the terminal surface of frustum portion (2) flushes, chip removal diapire (232) with hold chamber (21) diapire.

2. A static shoulder assembly according to claim 1, wherein two of the chip ejection holes (23) are provided, and wherein the projections of the two chip ejection holes (23) in the vertical direction coincide with each other.

3. A static shoulder assembly according to claim 2, wherein the through direction of the two chip ejection holes (23) is perpendicular to the axial direction of the stirring head (5).

4. A static shoulder assembly according to claim 3, wherein the projection of the reamer section (233) in the vertical direction is an arc surface.

5. A static shoulder assembly according to claim 4, wherein the clearance between the reamer sections (233) is greater than the static shoulder hole (22) spacing.

6. A static shoulder assembly according to claim 1, wherein the frustum portion (2) is provided with a cutting face (24) at one side of the chip removal hole (23).

7. The static shoulder assembly according to claim 1, wherein the side walls of the positioning table (1) are symmetrically provided with flat cut surfaces (12).

8. The static shoulder assembly according to claim 1, wherein the bottom of the frustum portion (2) is provided with an arc chamfer (25) at the outer edge of the static shoulder hole (22).

9. A static shoulder assembly according to claim 1, further comprising a mounting portion (3) connected to the top surface of the positioning table portion (1), wherein the mounting portion (3) communicates with the accommodating cavity (21), and a guiding surface (32) for guiding insertion of the stirring head (5) is provided at the bottom of the mounting portion (3).