CN210371147U - Oil distribution disc structure - Google Patents

Abstract

The utility model discloses a join in marriage food tray structure, including joining in marriage the food tray body, join in marriage the food tray body including the first portion that has big terminal surface and the second part that has little terminal surface, wherein, be provided with location excircle and step excircle on the outer circumference of first portion, the step excircle sets up in being close to one side of big terminal surface, just the external diameter of step excircle is less than the location excircle, the second portion with the first portion forms the stair structure, and the central point of second portion puts the department and is provided with the boss. The utility model discloses a department sets up the step excircle in the outer circumference of first portion, can guarantee finish machining process and accomplish the back, and the hole of joining in marriage the oilhole is less than or equal to 0.01mm for the coaxial precision of location excircle and hole and location excircle for the vertical accuracy of location step face, and the machining precision is showing and is improving. The outer circle of the step can be used as a soft three-jaw clamping part for post-process finish turning on one hand, and on the other hand, an oil absorption flow passage can be formed, so that the oil absorption flow area is increased.

Description

Oil distribution disc structure

Technical Field

The utility model relates to the field of machine manufacturing, in particular to join in marriage food tray structure.

Background

In the field of existing hydraulic machines, the use of oil distribution pans is very widespread. Join in marriage the food tray and all design and have stair structure, the big terminal surface of work needs processing oil groove, pinhole, screw etc. joins in marriage the food tray hole and still need install slide bearing a bit, so join in marriage the location excircle of food tray and for the perpendicular precision of location step face, the hole is for the perpendicular precision of location step face, for the coaxial precision requirement of location excircle all very high, these precisions are all guaranteed by the finish turning process.

When the oil distribution disc with the existing structure is subjected to finish turning processing, the oil distribution disc after finish turning is difficult to meet the requirements of the standard on vertical precision and coaxial precision due to the matching clearance of a mandrel and the positioning error of self-boring claw turning clamping.

SUMMERY OF THE UTILITY MODEL

The utility model provides an oil distribution disc structure to solve the above-mentioned technical problem who exists among the prior art.

In order to solve the technical problem, the utility model provides an oil distribution disc structure, include: the oil distribution disc comprises an oil distribution disc body, wherein the oil distribution disc body comprises a first part with a large end face and a second part with a small end face, a positioning excircle and a step excircle are arranged on the outer circumference of the first part, the step excircle is arranged on one side close to the large end face, the outer diameter of the step excircle is smaller than that of the positioning excircle, the second part and the first part form a step structure, and a boss is arranged at the central position of the second part.

Preferably, the oil distribution disc body is provided with an inner hole at the center for installing a sliding bearing.

Preferably, the large end face is respectively provided with an oil absorption window and an oil outlet window.

Preferably, the oil absorption window comprises: the oil distribution disc comprises a first oil suction window positioned on the edge of the first part and a second oil suction window positioned on the inner side of the first oil suction window and penetrating through the oil distribution disc body.

Preferably, the second oil suction window communicates with the inner bore through a passage.

Preferably, the oil outlet window includes a large window, a small window, and a connecting groove communicating the large window and the small window.

Preferably, the outer diameter of the outer circle of the step is 0.2-0.3mm smaller than that of the positioning outer circle.

Preferably, a positioning step surface is arranged at the joint of the first part and the second part.

Preferably, the outer sides of the first and second portions are each provided with a chamfer.

Compared with the prior art, the utility model discloses a join in marriage food tray structure, including joining in marriage the food tray body, join in marriage the food tray body including the first portion that has big terminal surface and the second part that has little terminal surface, wherein, be provided with location excircle and step excircle on the outer circumference of first portion, the step excircle sets up in being close to one side of big terminal surface, just the external diameter of step excircle is less than the location excircle, the second portion with the first portion forms the stair structure, and the central point of second portion puts the department and is provided with the boss. The utility model discloses an outer circumference department at the first portion sets up the step excircle, and make the external diameter of step excircle be less than the location excircle, thereby can be to joining in marriage food tray finish machining, big terminal surface of finish machining and step excircle earlier, this step excircle is pressed from both sides to the soft three-jaw of rethread self-boring, finish turning location excircle simultaneously, hole and location step face and all the other each terminal surfaces, excircle and chamfer, so can guarantee that the hole is less than or equal to 0.01mm for the coaxial precision of location excircle and hole and location excircle for the vertical precision of location step face, the machining precision is showing and is improving. The outer circle of the step can be used as a soft three-jaw clamping part for post-process finish turning on one hand, and on the other hand, an oil absorption flow passage can be formed, so that the oil absorption flow area is increased.

Drawings

FIG. 1 is a front view of an oil distribution pan structure of the present invention;

FIG. 2 is a rear view of an oil distribution pan structure of the present invention;

fig. 3 is a sectional view taken along the plane a-a of fig. 2.

Shown in the figure: 1. a first portion; 11. step excircle; 12. positioning the excircle; 2. a second portion; 21. a boss; 3. an inner bore; 4. an oil absorption window; 41. a first oil absorption window; 42. a second oil absorption window; 43. a channel; 5. an oil outlet window; 51. a large window; 52. a small window; 53. connecting grooves; 6. and positioning the step surface.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be noted that in the drawings, like parts are denoted by like reference numerals, and the drawings are simplified and are not to precise scale, and are only used for convenience and clarity to assist in explaining the embodiments of the present invention. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.

As shown in fig. 1 to 3, the present invention provides an oil distribution pan structure, including: an oil distribution disc body. The oil distribution disc body comprises a first part 1 with a large end face and a second part 2 with a small end face, wherein a positioning excircle 12 and a step excircle 11 are arranged on the outer circumference of the first part 1, the step excircle 12 is arranged on one side close to the large end face, the outer diameter of the step excircle 12 is smaller than that of the positioning excircle 12, the second part 2 and the first part 1 form a step structure, and a boss 21 is arranged at the central position of the second part 2.

Further, an inner hole 3 is formed in the center of the oil distribution disc body so as to install a sliding bearing, and the inner hole 3 penetrates through the oil distribution disc body. The external diameter of step excircle 11 is than the external diameter of location excircle 12 is little 0.2-0.3mm, when carrying out the finish machining, is right the required precision of step excircle 11 is not as high as location excircle 12, so can process step excircle 11 earlier, with the processing excircle is as the centre gripping position, carries out subsequent location excircle 12 finish machining, so can guarantee the coaxial precision of hole 3 for location excircle 12.

Preferably, the joint of the first part 1 and the second part 2 is provided with a positioning step surface 6, and the positioning step surface 6 is perpendicular to the positioning excircle 12. Because the oil distribution disc has higher precision requirement on the positioning step surface 6, the positioning step surface 6 can be simultaneously and finely processed with the positioning excircle 12, the inner hole and other areas, namely, the processing excircle is used as a clamping part for fine processing, so that the vertical precision of the inner hole and the positioning excircle relative to the positioning step surface is less than or equal to 0.01 mm.

Preferably, the outer sides of the first part 1 and the second part 2 are provided with chamfers, and the chamfers can be processed simultaneously in the finishing process.

With continued reference to fig. 1 to 3, the large end surfaces are respectively provided with an oil suction window 4 and an oil outlet window 5. The oil absorption window 4 includes: a first oil suction window 41 located at the edge of the first portion 1 and a second oil suction window 42 located inside the first oil suction window 41 and penetrating the oil distribution pan body.

Preferably, the second oil suction window 42 is communicated with the inner hole 3 through a passage 43, so that the hydraulic oil can smoothly flow into the inner hole.

Preferably, the oil outlet window 5 includes a large window 51, a small window 52, and a connecting groove 53 connecting the large window 51 and the small window 52.

To sum up, the utility model discloses an join in marriage food tray structure, including joining in marriage the food tray body, join in marriage the food tray body including the first part 1 that has big terminal surface and the second part 2 that has little terminal surface, wherein, be provided with location excircle 12 and step excircle 11 on the outer circumference of first part 1, step excircle 12 sets up in being close to one side of big terminal surface, just the external diameter of step excircle 12 is less than location excircle 12, second part 2 with first part 1 forms the stair structure, and the central point of second part 2 puts the department and is provided with boss 21. The utility model discloses an outer circumference department at first part 1 sets up step excircle 11, and make the external diameter of step excircle 11 be less than location excircle 12, thereby can be to joining in marriage food tray finish machining, big terminal surface of finish machining and step excircle 11 earlier, this step excircle 11 is pressed from both sides to the soft three-jaw of rethread self-boring, finish turning location excircle 12 simultaneously, hole 3 and location step face 6 and all the other each terminal surfaces, excircle and chamfer, so can guarantee that hole 3 is less than or equal to 0.01mm for the coaxial precision of location excircle 12 and hole 3 and location excircle 12 for the vertical precision of location step face 6, the machining precision is showing and is improving. The step excircle 11 can be used as a soft three-jaw clamping part for post-process finish turning on one hand, and can form an oil absorption runner on the other hand, so that the oil absorption flow area is increased.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which 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 in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be 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 according to specific situations by those skilled in the art.

It is further noted that, in the description of the present invention, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it is obvious for a person skilled in the art to make other variations or changes based on the above description, and all embodiments cannot be exhaustive here, and all obvious variations or changes that belong to the technical solutions of the present invention are still in the scope of protection of the present invention.

Claims (9)

1. An oil distribution pan structure comprising: the oil distribution disc body is characterized by comprising a first part with a large end face and a second part with a small end face, wherein a positioning excircle and a step excircle are arranged on the outer circumference of the first part, the step excircle is arranged on one side close to the large end face, the outer diameter of the step excircle is smaller than that of the positioning excircle, the second part and the first part form a step structure, and a boss is arranged at the center of the second part.

2. An oil distribution pan structure as claimed in claim 1, wherein the center of said oil distribution pan body is provided with an inner hole for mounting a sliding bearing.

3. An oil distribution pan structure as claimed in claim 2, wherein the large end face is provided with an oil suction window and an oil outlet window, respectively.

4. A drip pan structure as claimed in claim 3, wherein said oil suction window comprises: the oil distribution disc comprises a first oil suction window positioned on the edge of the first part and a second oil suction window positioned on the inner side of the first oil suction window and penetrating through the oil distribution disc body.

5. The oil distribution pan structure as claimed in claim 4, wherein said second oil suction window communicates with said inner hole through a passage.

6. An oil distribution pan structure as claimed in claim 3, wherein said oil outlet window includes a large window, a small window, and a connecting groove communicating said large window and said small window.

7. An oil distribution pan structure as claimed in claim 1, wherein the outer diameter of the step outer circle is smaller than the outer diameter of the positioning outer circle by 0.2 to 0.3 mm.

8. An oil distribution pan structure as claimed in claim 1, wherein a positioning step face is provided at a junction of said first portion and said second portion.

9. An oil distribution pan structure as claimed in claim 1, wherein the outside of said first and second portions are each provided with a chamfer.

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