CN115008358A

CN115008358A - Positioning and mounting tool

Info

Publication number: CN115008358A
Application number: CN202110233501.4A
Authority: CN
Inventors: 姜祖岗; 袁庆麟; 潘信予
Original assignee: AECC Commercial Aircraft Engine Co Ltd
Current assignee: AECC Commercial Aircraft Engine Co Ltd
Priority date: 2021-03-03
Filing date: 2021-03-03
Publication date: 2022-09-06

Abstract

A positioning and mounting tool for mounting a pin into a pin hole of a to-be-mounted part comprises a limiting block and an axial force application device, wherein the limiting block is provided with a binding surface which is bound with the first circumferential side of the to-be-mounted part, the binding surface is provided with a groove, and the groove faces the pin hole; the axial force application device is arranged on the second circumferential side of the part to be installed, provides a pressure head for applying axial force to the pin, can install the pin into the pin hole, limits the distance of the pin extending out of the pin hole by the depth of the groove, and can install the pin at a specified height simply and conveniently.

Description

Positioning and mounting tool

Technical Field

The invention relates to an assembly tool of an engine, in particular to installation of a pin.

Background

The anti-rotation pin is a common limiting measure of the aircraft engine, and as shown in fig. 1 and fig. 2, after the sealing ring 101 is installed, the anti-rotation pin 201 needs to be continuously installed to limit the circumferential rotation of the sealing ring 101. In order to ensure that the anti-rotation pin 201 cannot fall off, the anti-rotation pin 201 and the sealing ring 101 are in interference fit, and the anti-rotation pin 201 needs to be exposed out of the height of the inner wall X of the sealing ring 101 after installation. One assembly process is that after the anti-rotation pin 201 is cooled by dry ice, a hand hammer is used for knocking in the mounting hole in the sealing ring 101, and after the mounting hole is knocked in, the exposed size Y value of the anti-rotation pin 201 is measured by a height gauge. If the value of the exposure size Y is larger than the height X, the anti-rotation pin 201 is installed excessively, and the anti-rotation pin 201 needs to be knocked back from inside to outside through a hammer; if the exposed dimension Y is smaller than the height X, the installation requirement of the anti-rotation pin 201 is not met, and the anti-rotation pin 201 needs to be knocked by a hand hammer from outside to inside. Because the installation of the anti-rotation pin 201 depends on manual operation, an operator strikes the anti-rotation pin 201 by hand feeling, the feeding value of the anti-rotation pin cannot be accurately controlled, and the exposed length of the anti-rotation pin 201 can meet the requirement of a drawing after the anti-rotation pin is adjusted for many times, so that the installation efficiency of the anti-rotation pin is low in the installation mode, and the assembly working hour is prolonged.

Disclosure of Invention

The invention aims to provide a positioning and mounting tool, which can simply and conveniently mount a pin to a specified height and effectively save working hours.

The positioning and mounting tool for achieving the purpose comprises a limiting block and an axial force application device, wherein the limiting block is provided with a binding surface, the binding surface is bound with the first circumferential side of the piece to be mounted, the binding surface is provided with a groove, and the groove faces the pin hole; and the axial force application device is arranged on the second circumferential side of the component to be installed and provides a pressure head which is used for applying axial force to the pin so as to install the pin into the pin hole. The groove depth of the groove on the limiting block limits the distance of the pin extending out of the pin hole.

In one embodiment, the positioning and mounting tool comprises a base, and the limiting block and the axial force application device are arranged on the base.

In one embodiment, the base comprises an outer side wall located outside the to-be-installed part, and the axial force application device is a first ejector rod penetrating through the outer side wall.

In one embodiment, the first ejector rod is in threaded connection with the outer side wall, and a handle is arranged at one end of the first ejector rod.

In one embodiment, the limiting block is provided with a screw hole perpendicular to the axial direction of the pin, the base is provided with a deep hole corresponding to the screw hole, and the tightening bolt and the screw hole are matched to penetrate through the limiting block and go deep into the deep hole.

In one embodiment, the positioning and mounting tool comprises a jacking device for jacking the limiting block axially.

In one embodiment, the base comprises an inner side wall located on the inner side of the component to be installed, and the jacking device is a screw rod penetrating through the inner side wall.

In one embodiment, the tightening device further comprises a pair of axially movable limiting and guiding rods penetrating through the inner side wall, the limiting and guiding rods are symmetrically distributed on two sides of the screw rod, and one end of each limiting rod is fixedly connected with the corresponding limiting block.

In one embodiment, the base comprises an inner side wall located on the inner side of the to-be-installed part, and the jacking device is a second ejector rod with two ends respectively abutting against the inner side wall and the limiting block.

In one embodiment, the base comprises an inner side wall located on the inner side of the component to be mounted, and the tightening device is a fixed block with two ends respectively abutting against the inner side wall and the limiting block.

In one embodiment, the base is further provided with a middle layer inner wall, the middle layer inner wall is attached to the second circumferential side of the piece to be installed, and the piece to be installed is clamped together with the limiting block.

In one embodiment, the medial wall is removably secured to the base.

In one embodiment, the medial wall has an opening for passage of the axial force applying means.

Above-mentioned location mounting tool fixes a position on treating the inside and outside wall of installed part, knocks the pin into the cotter hole through axial force application device to the opposite side of treating the installed part sets up the stopper that has the recess, and the stopper is laminated mutually with the inner wall of treating the installed part. The groove depth of the groove limits the distance of the pin extending out of the pin hole, so that the pin can only extend out of the X height under the limitation of the groove of the limiting block in the pin installation process, the exposed height of the anti-rotation pin after installation can meet the requirement at one time, and the anti-rotation pin installation efficiency is greatly improved.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and examples, in which:

fig. 1 is a schematic view of a pin installation position.

Fig. 2 is a cross-sectional view of the pin installation location.

Fig. 3 is a cross-sectional view of a first embodiment of a positioning installation tool.

Fig. 4 is a top view of a first embodiment of a positioning installation tool.

Fig. 5 is a schematic view of a first embodiment of a positioning installation tool.

FIG. 6 is a schematic view of the positioning of the installation tool in connection with the first circumferential surface of the part to be installed

FIG. 7 is a schematic view of the positioning of the installation tool in connection with the second circumferential surface of the part to be installed

Fig. 8 is a schematic view of a second embodiment of a positioning installation tool.

Fig. 9 is a schematic view of a third embodiment of a positioning installation tool.

FIG. 10 is a schematic view of a fourth embodiment of a positioning installation tool.

Description of the reference numerals

10 base

11 outer side wall

12 inner side wall

15 middle layer inner wall

20 axial force application device

22 indenter

25 first ejector rod

29 handle

30 stopper

31 screw

33 bonding surface

34 limiting guide rod

36 back side

37 puller bolt

38 groove

40 fixed block

50 second ejector rod

55 coupling

105 first circumferential side

106 second circumferential side

101 sealing ring

201 anti-rotation pin

100 to-be-installed member

200 pin

Detailed Description

The invention is further described in the following description with reference to specific embodiments and the accompanying drawings, in which more details are set forth to provide a thorough understanding of the invention, but it will be apparent that the invention can be practiced in many other ways than those specifically described herein, and that a person skilled in the art can make similar generalizations and deductions as to the practice of the invention without departing from the spirit of the invention, and therefore the scope of the invention should not be limited by the contents of this specific embodiment. It is noted that these and other figures follow, given by way of example only, and are not drawn to scale, and should not be construed to limit the scope of the invention as it may be claimed.

The positioning and installing tool comprises an axial force application device 20 and a limiting block 30, wherein the axial force application device 20 is used for installing the pin 200 into a pin hole (not shown in the figure) of the piece 100 to be installed. The pin 200 includes but is not limited to an anti-rotation pin, a micro pin, etc., and the member to be installed 100 includes but is not limited to a thin-walled member such as a packing ring, a casing, etc. In the first embodiment of the positioning and mounting tool shown in fig. 3 to 5, the positioning and mounting tool comprises a base 10, and a stop block 30 and an axial force application device 20 are arranged on the base 10. The stop block 30 has an abutment surface 33, the abutment surface 33 abutting the first circumferential side 105 of the member to be mounted 100. The abutment surface 33 has a recess 38, the recess 38 facing the pin hole in the member 100 to be mounted. The abutment surface 33 of the stop block 30 is preferably a circular arc surface having a diameter equal to the inner diameter of the member to be installed 100 to maintain a close abutment with the first circumferential side 105. An axial force means 20 is arranged on the second circumferential side 106 of the component 100 to be mounted, the axial force means 20 providing a ram 22, the ram 22 applying an axial force to the pin 200 for mounting the pin 200 in the pin hole. The ram 22 preferably has a diameter equal to the diameter of the pin 200 so that the axial force applying means 20 ensures that the pin 200 moves in the axial direction during application of the axial force to the pin 200.

The groove depth of the recess 38 of the stop 30 defines the distance that the pin 200 extends out of the pin bore. When the axial forcing means 20 is used to apply pressure to the pin 200, the pin 200 is gradually forced from the second circumferential side 106 of the element 100 to be mounted into the first circumferential side 105, limited during mounting by the stopper 30 abutting against the first circumferential side 105, and the contact of the head of the pin 200 with the recess 38 ensures that the pin 200 can only extend out of the first circumferential side 105 by a length equal to the groove depth of the recess 38. When setting the groove depth of recess 38 for the drawing regulation distance, can ensure that the length that pin 200 stretches out the cotter hole is the required length of drawing, consequently can be simple and convenient install pin 200 to the assigned position through above-mentioned frock, need not pass through the artifical extension distance of adjusting pin 200 many times again, saved man-hour. In order to avoid the positioning and installing tool from moving during the installation process, the base 10 is further provided with a middle layer inner wall 15, and the middle layer inner wall 15 abuts against the second circumferential side 106 of the to-be-installed part 100 and clamps the to-be-installed part 100 together with the limiting block 30. The middle layer inner wall 15 is a pair of bumps symmetrically distributed on the base 10, and the middle layer inner wall 15 has an opening for passing through the axial force application device 20. Referring to fig. 5 to 7, the medial inner wall 15 abuts against the second circumferential side 106 of the member 100 to be installed and is formed as a slit formed by the pair of medial inner walls 15 and allowing the pin 200 and the axial force applying means 20 to pass through to install the pin 200 into the pin hole of the member 100 to be installed. The limiting block 30 and the middle layer inner wall 15 are fixed on two sides of the piece to be installed 100 respectively, so that a positioning installation tool can be clamped on the piece to be installed 100, and the accuracy of the installation process is improved.

In the embodiment shown in fig. 3 to 5, the base 10 includes an outer side wall 11 located outside the member to be mounted 100, and the axial force application device 20 is a first push rod 25 penetrating through the outer side wall 11. The end of the first ram 25 is a ram 22, the ram 22 directly contacting the pin 200. The first ejector pin 25 is preferably a threaded rod, the outer side wall 11 is provided with a threaded hole, the first ejector pin 25 is in threaded connection with the outer side wall 11 and the press head 22 at one end abuts against the pin 200. The pin 200 is gradually pressed into the pin hole on the piece 100 to be installed under the pressing force generated by the screw, so that the problem that the wall surface of the piece 100 to be installed is damaged due to the fact that the hand hammer is knocked to hit the piece 100 to be installed through misoperation is avoided. The other end of the first push rod 25 is provided with a handle 29, and the stable axial force can be provided for the pin 200 by rotating the handle 29, and meanwhile, the construction is convenient for workers.

The positioning and mounting tool further comprises a jacking device for jacking the limiting block 30 along the axial direction. In the above embodiment, the abutting surface 33 of the limiting block 30 abuts against the first circumferential side 105 of the to-be-installed part 100, and the abutting device abuts against the back surface 36 of the limiting block 30, so that the limiting block 30 is always kept to abut against the first circumferential side 105 of the to-be-installed part 100, and the deviation of the installation position of the pin 200 caused by the displacement in the installation process of the pin 200 is avoided. The rear surface 36 of the stopper 30 is opposite to the abutting surface 33, and the rear surface 36 is preferably a flat surface to provide a force bearing point for the jacking device.

In the first embodiment of the positioning and installing tool shown in fig. 3 to 5, the tightening device is a screw 31, the base 10 includes an inner side wall 12 located inside the component 100 to be installed, and the screw 31 penetrates through the inner side wall 12 on the base 10. The inner sidewall 12 is provided with a threaded hole, and the screw 31 passes through the threaded hole on the inner sidewall 12 and has one end abutting against the back 36 of the stopper 30. By adjusting the length of the screw 31 in the axial direction to adjust the position of the stopper 30 on the base 10, and applying an axial force to the stopper 30 by the screw 31, the stopper 30 is pressed against the first circumferential side 105 of the member to be mounted 100 to press the wall surface of the member to be mounted 100. The inner side wall 12 is further provided with a pair of axially movable limiting guide rods 34, the limiting guide rods 34 are symmetrically distributed on two sides of the inner side wall 12 relative to the screw 31, the limiting guide rods 34 are fixedly connected with the limiting block 30, and a channel (not shown in the figure) for sliding the limiting guide rods 34 is provided inside the limiting block 30. The limiting guide rod 34 is used for ensuring that the limiting block 30 always moves linearly along the axial direction in the moving process without deviation, so that the limiting block 30 can evenly extrude the inner wall of the part to be installed 100.

In the second embodiment of the positioning and mounting tool shown in fig. 8, the same reference numerals are used to refer to the same or similar components, and the descriptions of the same technical contents are optionally omitted, and the description of the omitted parts can refer to the foregoing embodiments, and the description of the present embodiment is not repeated. The mounting member 100 is provided with an inner side wall 12, the tightening device is a fixing block 40 with two ends respectively abutting against the inner side wall 12 and the limiting block 30, and the fixing block 40 is preferably a trapezoidal block. The two sides of the fixing block 40 respectively abut against the inner side wall 12 and the back surface 36 of the limiting block 30 to fix the limiting block 30. And after the pin is installed, the fixing block 40 and the limiting block 30 are sequentially taken down, and the positioning and installing tool is disassembled. The fixing block 40 may also be a rectangular parallelepiped block, and both ends of the fixing block 40 respectively abut against the inner sidewall 12 and the back surface 36 of the limiting block 30. The fixing block 40 has various dimensions, and a suitable size can be selected according to the distance between the inner side wall 12 and the limiting block 30. When the fixing block 40 is a cuboid block, a through hole is formed below the base 10 where the fixing block 40 is located, so that the cuboid fixing block 40 can be conveniently detached by using devices such as thimbles, and the detachment of the positioning and mounting tool is completed. The shape of the fixing block 40 includes, but is not limited to, the above embodiments as long as it plays a role of pressing the stopper 30.

In the third embodiment of the positioning and installing tool shown in fig. 9, the tightening device is a second ejector rod 50 with two ends respectively abutting against the inner side wall 12 and the limiting block 30. The second ejector pin 50 is the lead screw of two-way adjustable length along the axis direction, has shaft coupling 55 in the middle of the lead screw, can make the both ends of second ejector pin 50 withstand inside wall 12 and stopper 30's back 36 respectively through rotatory lead screw to certain length to exert the ascending power of axial direction so that stopper 30's binding face 33 hugs closely the first circumference side 105 of treating installed part 100 to stopper 30. When the positioning and mounting tool is disassembled, the second ejector rod 50 is rotated to shorten the length thereof, the limiting block 30 is not attached to the first circumferential side 105 any more, and then the positioning and mounting tool is removed. The second ram 50 includes, but is not limited to, a bi-directionally adjustable lead screw, and in some embodiments, the second ram 50 may also be selected from a threaded sleeve and a threaded rod, a threaded hole being provided in the threaded sleeve, and the threaded rod being threadedly connected to the threaded sleeve. When the screw is rotated to a certain length, one side of the threaded sleeve can abut against the inner side wall 12, and one end of the screw abuts against the back 36 of the limiting block 30. When the location mounting tool needs to be dismantled, the screw rod is rotated reversely to shorten the length of the second ejector rod 50, and then the second ejector rod 50 and the limiting block 30 are taken down in sequence to complete the dismantling of the location mounting tool.

In the fourth embodiment of the positioning and installing tool shown in fig. 10, the base 10 is fixedly connected with the limiting block 30, and the middle layer inner wall 10 on the base 10 can move along the axial direction. The limiting block 30 is provided with a screw hole perpendicular to the axial direction of the pin 200, and the base 10 is provided with a deep hole (not shown in the figure) which is matched with the screw hole on the limiting block 30, wherein the deep hole is a threaded hole. The puller bolt 37 is matched with a screw hole on the limiting block 30, penetrates through the limiting block 30, enters the deep hole and is connected with the thread of the deep hole in a matched manner. After the tightening bolt 37 is tightened, the bolt portion of the tightening bolt 37 is tightly attached to the stopper 30, so that the stopper 30 is pressed against the base 10, and at this time, the attachment surface 33 of the stopper 30 is tightly attached to the first circumferential side 105 of the member to be attached 100. After the pin is installed, the puller bolt 37 is loosened, the limiting block 30 is taken down, and then the positioning and installing tool is disassembled. The base 10 is provided with a deep hole matched with the screw hole on the limiting block 30, and the deep hole can also be an inverted T-shaped hole extending along the paper surface direction, and the limiting block 30 can move on the base 10 along the paper surface direction. A nut is arranged in the inverted T-shaped hole, and the puller bolt 37 is matched with the nut to compress the limiting block 30. The middle layer inner wall 15 on the base 10 is preferably movable in the axial direction, so that the middle layer inner wall 15 and the limiting block 30 can clamp the pieces 100 to be mounted with different thicknesses, and the installation or the removal of the positioning and mounting tool is facilitated. The middle inner wall 15 can be detachably fixed to the base 10 and pressed against the member to be mounted 100 by bolts. The provision of the middle layer inner wall 15 includes, but is not limited to, the above-described embodiments as long as it is axially movable and achieves a clamping effect on the member to be mounted 100.

Although the present invention has been disclosed in terms of the preferred embodiment, it is not intended to limit the invention, and variations and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. For example, the connection mode of the puller bolt, the limiting block and the base, the shape selection of the inner wall of the middle layer and the like. Therefore, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope defined by the claims of the present invention, unless the technical essence of the present invention departs from the content of the present invention.

Claims

1. A positional mounting tool for installing a pin into a pin hole of a member to be mounted, comprising:

the limiting block is provided with a jointing surface which is jointed with the first circumferential side of the piece to be installed, the jointing surface is provided with a groove, and the groove faces the pin hole; and

the axial force application device is arranged on the second circumferential side of the component to be installed and is used for providing a pressure head which is used for applying axial force to the pin so as to install the pin into the pin hole;

the groove depth of the groove defines the distance the pin extends out of the pin bore.

2. The positioning and mounting tool of claim 1 further comprising a base, wherein said stop block and said axial force applying means are disposed on said base.

3. The positioning and mounting tool of claim 2, wherein said base includes an outer sidewall outside said member to be mounted, and said axial force applying means is a first ram passing through said outer sidewall.

4. A positioning and mounting tool as set forth in claim 3, wherein said first ram is threadably connected to said outer sidewall and has a handle at one end.

5. The positioning and mounting tool of claim 2, wherein the stop block is provided with a screw hole perpendicular to the axial direction of the pin, the base is provided with a deep hole corresponding to the screw hole, and the puller bolt and the screw hole are matched to penetrate through the stop block and extend into the deep hole.

6. The positioning and mounting tool of claim 2, wherein the positioning and mounting tool comprises a jacking device for axially jacking the stop block.

7. A positioning and mounting tool as set forth in claim 6 wherein said base includes an inner side wall located inside said member to be mounted, said tightening means being a screw passing through said inner side wall.

8. The positioning and mounting tool of claim 7, wherein the tightening device further comprises a pair of axially movable limiting and guiding rods passing through the inner side wall, the limiting and guiding rods are symmetrically distributed on two sides of the screw rod, and one end of each limiting rod is fixedly connected with the limiting block.

9. A positioning and installing tool as claimed in claim 6, wherein said base includes an inner side wall located inside said member to be installed, and said urging means is a second ejector rod having two ends respectively abutting against said inner side wall and said limiting block.

10. A positioning and mounting tool as claimed in claim 6, wherein the base includes an inner side wall located inside the member to be mounted, and the tightening device is a fixed block with two ends respectively abutting against the inner side wall and the limiting block.

11. The positioning and mounting tool of any one of claims 1 to 10, wherein the base is further provided with a medial inner wall abutting against the second circumferential side of the member to be mounted, and clamping the member to be mounted together with the stop block.

12. A positioning and setting tool as in claim 11 wherein said medial wall is removably secured to said base.

13. A positioning and setting tool as in claim 11 wherein said medial wall has an opening therethrough for said axial force applying means.