阅读说明：本技术 一种用于支撑件非同轴孔上压装衬套的工具及安装方法 (Tool for press fitting of bushing on non-coaxial hole of support piece and mounting method ) 是由 张俊 易鹭 辛艳粉 张书成 占家景 徐建聪 于 2021-07-30 设计创作，主要内容包括：本发明属于复合工装领域,具体为一种用于支撑件非同轴孔上压装衬套的工具及安装方法。包括起传力作用的支座和起引导作用的引导柱,支座是一个整体结构,上部分为压力机施加压力的承力板,中间部分为避让槽,下部结构有一下限,在下限上面,设有一台阶型凹槽,引导柱与该台阶型凹槽的小圆端为过盈配合关系,与衬套内孔为间隙配合关系,衬套凸肩与台阶型凹槽的大圆端为间隙配合,压装衬套时,将衬套套在该引导柱上面,实现了衬套的压装,其中引导柱与支座配合后的下底面和支座的下底面的最大尺寸在装配时不应接触到工作平台。本装置结构简单、操作方便、便于存放等特点,既有效的提高了工作效率,又符合温差装配在20s内完成的工艺要求。(The invention belongs to the field of composite tools, and particularly relates to a tool for press-fitting a bushing on a non-coaxial hole of a support piece and an installation method. The bearing is an integral structure, the upper part is a bearing plate for applying pressure to a press, the middle part is an avoiding groove, the lower structure is provided with a lower limit, a step-shaped groove is formed in the lower limit, the guide post is in interference fit with the small round end of the step-shaped groove and is in clearance fit with the inner hole of the bushing, the shoulder of the bushing is in clearance fit with the large round end of the step-shaped groove, the bushing is sleeved on the guide post during bushing press fitting, the press fitting of the bushing is realized, and the maximum sizes of the lower bottom surface of the guide post matched with the bearing and the lower bottom surface of the bearing are not in contact with a working platform during assembly. The device has the characteristics of simple structure, convenient operation, convenient storage and the like, not only effectively improves the working efficiency, but also meets the process requirement of completing temperature difference assembly within 20 s.)

1. A tool for pressing and mounting a bushing on a non-coaxial hole of a support is characterized by comprising a support (1) for force transmission and a guide post (2) for guiding, the support (1) is of an integral structure, the upper part is a bearing plate for applying pressure by a press, the middle part is an avoiding groove, the lower structure is provided with a lower limit, a step-shaped groove is arranged on the upper limit, the guide post (2) is in interference fit with the small round end of the step-shaped groove, the inner hole of the bush (3) is in clearance fit, the convex shoulder of the bush (3) is in clearance fit with the big round end of the step-shaped groove, when the bush (3) is pressed, the bush (3) is sleeved on the guide post (2) to realize the press fitting of the bush (3), the maximum size of the lower bottom surface of the guide post (2) matched with the support (1) and the maximum size of the lower bottom surface of the support are not required to be contacted with the working platform during assembly.

2. A tool for press fitting a bush on a non-coaxial hole of a support according to claim 1, wherein the thickness a of the bearing plate of the support (1) is 20 mm.

3. A tool for press fitting a bush on a non-coaxial bore of a support according to claim 1, characterised in that the height H of the relief area of the abutment (1) is greater than the height H between 2 bearing surfaces of the part.

4. A tool for press fitting a bush on a non-coaxial bore of a support according to claim 1, characterized in that all the sharp edges of the support (1) are rounded.

5. A tool for press fitting a bush on a non-coaxial hole of a support member according to claim 1, wherein the height of the guide post (2) after press fitting is smaller than the height b of the press fitting support surface of the part.

6. A tool for press fitting of bushings in non-coaxial holes of a supporting member according to claim 1, characterized in that the bottom surface of the seat (1) is on the same horizontal plane as the bottom plane of the guide post (2) after press fitting and is 0.05-0.1mm higher than the height b of the press fitting supporting surface of the part.

7. A tool for press-fitting a bush on a non-coaxial hole of a support according to claim 1, characterized in that the height difference B formed between the bottom surface and the lower limit of the seat (1) is smaller than the height B of the press-fitting support surface of the part.

8. A tool for press-fitting a bush on a non-coaxial hole of a support according to claim 1, wherein the distance C from the center of the hole of the press-fitting bush (3) to the outermost edge of the support surface of the part is smaller than the width C of the center of the stepped hole at the lower limit of the bottom of the support (1).

9. A method of installing a press fit bushing in a non-coaxial bore of a support, comprising the steps of:

1) putting the guide column (2) into liquid nitrogen for cooling, taking out after 30min, and assembling with the support (1), namely finishing the manufacture of the tool;

2) when the lower supporting surface bushing is pressed, a circular tool needs to be prepared, the upper plane and the lower plane of the tool need to ensure the flatness requirement, an inner hole needs to avoid a protruding excircle at the lower part of a part,

3) placing the part (5) and the tool on a working platform of a press machine;

4) taking out the bushing (3) from the refrigerator and then sleeving the bushing on the guide post (2) of the tool;

5) placing the whole tool consisting of the support (1) and the guide column (2) and the bushing (3) on the corresponding mounting hole;

6) starting the press machine (4), slowly applying loading force to complete press mounting of the bushing (3);

7) the press mounting of the supporting surface bushing is completed according to the steps 1) to 4) in sequence;

8) a turnover part (5) for installing the bushing on the other supporting surface;

9) and repeating the steps 3) to 7) to complete the press fitting of the bushing.

Technical Field

The invention belongs to the field of composite tools, and particularly relates to a tool for press-fitting a bushing on a non-coaxial hole of a support piece and an installation method.

Background

The disc ring type supporting piece is of a disc ring structure and is provided with an upper supporting surface and a lower supporting surface, a through hole is formed in the middle of the supporting surface, small holes are distributed in the upper supporting surface and the lower supporting surface, the small holes in the upper surface and the lower surface are not concentric, the bushings are required to be pressed in the small holes, and the convex shoulders of the installed bushings are arranged on the inner sides of the supporting surfaces, so that the installation of the convex shoulder bushings in the upper supporting surface and the lower supporting surface cannot be realized by using a traditional bushing pressing tool, and a set of tool is designed for completing the installation of the convex shoulder bushings. The device consists of a support with force transmission function and a guide column with guide function, the guide column is in interference fit with the support, a frozen bushing is taken out to be sleeved on the guide column during working, then a tool and the bushing are placed on a corresponding part hole, a press applies force on the upper surface of the support, and the temperature difference assembly of the bushing is completed through force transmission.

Disclosure of Invention

Technical scheme

The utility model provides an instrument that is used for pressure equipment bush on non-coaxial hole of support piece, including the support 1 that plays biography power effect and the guide post 2 that plays the guide effect, the support 1 that plays biography power effect is an overall structure, the upper portion is the load board that the pressure machine exerted pressure, the intermediate part is for dodging the groove, the substructure has a lower limit, on the lower limit, be equipped with a step type recess, guide post 2 is interference fit with the little round end of this step type recess, be clearance fit with 3 holes of bush, 3 convex shoulders of bush are clearance fit with the great circle end of step type recess, during pressure equipment bush 3, overlap bush 3 on this guide post 2, the pressure equipment of bush 3 has been realized, wherein the maximum dimension of the lower bottom surface of guide post 2 after 1 cooperation with the support and the lower bottom surface of support should not contact work platform when the assembly.

The thickness A of a bearing plate of the support 1 is 20 mm.

The height H of the avoiding area of the support 1 is larger than the height H between the 2 supporting surfaces of the part.

All sharp edges of the support 1 need to be rounded.

After the press mounting is finished, the height of the guide post 2 is smaller than the height b of the press mounting support surface of the part.

The bottom surface of the support 1 and the bottom plane of the guide post 2 after the press mounting are on the same horizontal plane and are 0.05-0.1mm higher than the press mounting support surface b of the part.

The height difference B formed between the bottom surface and the lower limit of the support 1 is smaller than the height B of the part press-fitting support surface.

The distance C from the hole center of the press-fitting bushing 3 to the outermost edge of the part supporting surface is smaller than the width C of the hole center of the step hole at the lower limit of the bottom of the support 1.

A method of installing a press fit bushing in a non-coaxial bore of a support, comprising the steps of:

1. placing the guide column 2 into liquid nitrogen for cooling, taking out after 30min, and assembling with the support 1, namely completing the manufacture of the tool;

2. when the lower supporting surface bushing is pressed, a circular ring tool needs to be prepared, the upper plane and the lower plane of the tool need to ensure the flatness requirement, an inner hole needs to avoid a protruding excircle at the lower part of a part, and 3, the part 5 and the tool are placed on a working platform of a press machine;

4. taking out the bushing 3 from the refrigerator and then sleeving the bushing on the guide post 2 of the tool;

5. placing the whole tool consisting of the support 1 and the guide post 2 and the bush 3 on the corresponding mounting hole;

6. starting the press machine 4, slowly applying loading force to complete press mounting of the bush 3;

7. the press mounting of the supporting surface bushing is completed according to the steps 1-4 in sequence;

8. a turnover part 5 for installing the bush on the other supporting surface;

9. and repeating the steps 3-7 to complete the press mounting of the bushing.

Technical effects

The invention has convenient positioning and high working efficiency, avoids the difficulty that the bushing cannot be installed because the bushing mounting holes of the upper and lower supporting surfaces of the part are not concentric and the shoulder of the installed bushing is arranged on the inner side of the supporting surface, effectively improves the working efficiency due to the characteristics of simple structure, convenient operation, convenient storage and the like, and also meets the process requirement that the temperature difference assembly is completed within 20 s.

Drawings

FIG. 1 is a schematic diagram of the operation of the present invention;

FIG. 2 is a partially enlarged schematic view;

FIG. 3 is an axial schematic view of the present invention;

FIG. 4 is a schematic view of a part structure;

FIG. 5 is a schematic view of a mount;

FIG. 6 is a schematic illustration of a bushing guiding process;

FIG. 7a is a schematic drawing of part dimensions;

FIG. 7b part size side view;

FIG. 8a is a schematic size diagram of a pedestal;

FIG. 8b is a side view of the standoff dimension;

wherein: a support-1, a guide post-2, a bushing-3, a press-4 and a part-5.

Detailed Description

The invention will be further described with reference to the following drawings:

the design one set of frock that is used for the difference in temperature assembly of bush on the lopps of dish lopps support piece, its characterized in that includes: the support 1 for force transmission and the guide post 2 for guide. The support 1 with the force transmission function is an integral structure, the upper portion is a force bearing plate for applying pressure by a press, the middle portion is an avoiding groove, the lower portion structure is provided with a lower limit, a step-shaped groove is arranged on the lower limit, the guide column 2 is in interference fit with a small round end of the step-shaped groove and is in clearance fit with an inner hole of the bush 3, a convex shoulder of the bush 3 is in clearance fit with a large round end of the step-shaped groove, the bush 3 is sleeved on the guide column 2 during the press fitting of the bush 3, the press fitting of the bush 3 is realized, and the maximum sizes of a lower bottom surface of the guide column 2 matched with the support 1 and the lower bottom surface of the support are not contacted with a working platform during assembly.

It is divided into the triplex for support 1, and the upper end is the load board that the press exerted pressure, and thickness A is 20mm, guarantees the rigidity requirement, and middle one section first half is vertical structure, and the effect is for dodging the last supporting surface of part, and the latter half is a great circular arc to there has accepted the pressure that the press was exerted as big as possible in the area as far as, and better bearing is accepted power, and the lower extreme is a step structure, mainly as with guide post 2 cooperation and with bush 3's contact.

The height H of the avoidance area of the support 1 is larger than the height H between 2 supporting surfaces of the part by about 5 mm.

All sharp edges of the support 1 all need sharp edge rounding, and because the tool needs to be held by hands in the assembling process, in order to avoid the injury of the sharp edges to people and the hand feeling comfort degree in the operation process, all sharp edge rounding is at least R1.

After the press mounting is finished, the height of the guide column 2 is smaller than the height b of the press mounting support surface of the part, namely the guide column does not contact the working platform.

The bottom surface of the support 1 and the bottom plane of the guide post 2 after press mounting are on the same horizontal plane and are 0.05-0.1mm higher than the press mounting support surface b of the part, and the distances between the bottom surface and the press mounting support surface b are delta H1 and delta H2 shown in figure 2, and the distance between the bottom surface and the press mounting support surface b of the part is 0.05-0.1mm, namely delta H1 and delta H2.

The height difference B formed between the bottom surface and the lower limit of the support 1 is smaller than the height B of the part press-fitting support surface. Can ensure the gap requirement between the convex shoulder surface of the bushing and the supporting surface of the part, and the attachment is tighter, so that the assembly process meets the requirement of the assembly process specification

The distance C from the hole center of the press-fitting bushing 3 to the outermost edge of the part supporting surface is smaller than the width C of the hole center of the step hole at the lower limit of the bottom of the support 1, and the avoidance function is also realized, so that the contact between the tool and the part press-fitting supporting surface is avoided, and scratches, scratches and the like are generated.

The material of the support 1 is steel, and the support 1 is a stressed part which must meet the rigidity requirement. When the distance between the 2 mounting holes of the bush 3 is relatively close, the width D of the support 1 is more than D and less than D and less than 1.3D, because when the distance between the 2 mounting holes is relatively close, if the shoulder bush 3 is pressed and mounted first and then the other bush 3 is pressed and mounted, the interference that the shoulder of the bush 3 pressed and mounted is not scratched or damaged needs to be considered, and at the moment, the width of the support 1 needs to be accurately calculated to meet the requirement

. A tool for pressing a bushing on a non-coaxial hole of a support and an installation method thereof comprise the following steps:

1. placing the guide column 2 into liquid nitrogen for cooling, taking out after 30min, and assembling with the support 1, namely completing the manufacture of the tool;

2. when the lower supporting surface bushing is pressed, a circular tool needs to be prepared, the upper plane and the lower plane of the tool need to ensure the flatness requirement, an inner hole needs to avoid a protruding excircle at the lower part of a part,

3. placing the part 5 and the tool on a working platform of a press machine;

4. taking out the bushing 3 from the refrigerator and then sleeving the bushing on the guide post 2 of the tool;

5. placing the whole tool consisting of the support 1 and the guide post 2 and the bush 3 on the corresponding mounting hole;

6. starting the press machine 4, slowly applying loading force to complete press mounting of the bush 3;

7. the press mounting of the supporting surface bushing is completed according to the steps 1-4 in sequence;

8. a turnover part 5 for installing the bush on the other supporting surface;

9. and repeating the steps 3-7 to complete the press mounting of the bushing.