CN115533214A - Diameter-adjustable blind hole bushing dismounting tool and using method - Google Patents

Diameter-adjustable blind hole bushing dismounting tool and using method Download PDF

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Publication number
CN115533214A
CN115533214A CN202211219677.5A CN202211219677A CN115533214A CN 115533214 A CN115533214 A CN 115533214A CN 202211219677 A CN202211219677 A CN 202211219677A CN 115533214 A CN115533214 A CN 115533214A
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CN
China
Prior art keywords
pull rod
rod shaft
hole
sliding block
holding body
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Pending
Application number
CN202211219677.5A
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Chinese (zh)
Inventor
闫浪多
王作鹏
王铁海
曾桃飞
路晨
焦明勇
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AECC Harbin Dongan Engine Co Ltd
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AECC Harbin Dongan Engine Co Ltd
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Publication date
Application filed by AECC Harbin Dongan Engine Co Ltd filed Critical AECC Harbin Dongan Engine Co Ltd
Priority to CN202211219677.5A priority Critical patent/CN115533214A/en
Publication of CN115533214A publication Critical patent/CN115533214A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Drilling And Boring (AREA)

Abstract

The invention belongs to the technical field of mechanical assembly and disassembly, and discloses a diameter-adjustable blind hole bush disassembling tool and a using method thereof, wherein the disassembling tool comprises a pull rod shaft, a maintaining body and a sliding block, the lower half part of the axial direction of the pull rod shaft is a cone, an external thread surface is arranged above the cone, the maintaining body is provided with a through hole which is communicated up and down, the upper half part of the through hole of the maintaining body is an internal thread hole matched with the external thread surface of the pull rod shaft, the lower half part of the through hole of the maintaining body is an internal cone matched with the cone of the pull rod shaft, the maintaining body is provided with at least two horizontal and symmetrically distributed cross holes which are communicated with the side surface of the maintaining body and the through hole of the maintaining body, and the cross hole is positioned at or below the internal cone surface of the through hole; at least two sliding blocks are respectively arranged in the corresponding transverse holes in a sliding way. The tool has a certain adjusting range, and the application range can be further enlarged by replacing the related matched sliding block on the tool. The problem of taking out the blind hole sleeve with a larger diameter can be effectively solved.

Description

Diameter-adjustable blind hole bushing dismounting tool and using method
Technical Field
The invention belongs to the technical field of mechanical assembly and disassembly, relates to a blind hole bushing disassembling tool and method, and particularly relates to a blind hole bushing disassembling tool with an adjustable diameter and a using method.
Background
In aircraft engines and transmission systems, and particularly in transmission casings, there is a series of bores which are often formed with large and small diameter bushings to support the respective shaft diameters and to produce relative rotational movement, the bushings often being made of copper, aluminum, or bearing alloys. As the machine runs, the bushing is required to be replaced after reaching the wear fatigue limit and reaching the service life cycle, the through hole sleeve is relatively easy to disassemble, and an acting point can be found, but the disassembling of the blind hole sleeve with a larger diameter is always difficult, most of the blind hole sleeves are machined by adopting a machining method, the existing tools have specificity in the disassembling of the blind hole sleeves, one tool can only deal with the bushing with one diameter, and the operation is difficult.
Disclosure of Invention
In order to solve the problems, the invention provides a diameter-adjustable blind hole bushing dismounting tool and a using method thereof, which are suitable for taking out a bushing in a blind hole without an aperture.
The technical scheme of the invention is as follows:
a blind hole bush dismounting tool with an adjustable diameter comprises a pull rod shaft, a holding body and a sliding block, wherein the lower half part of the pull rod shaft in the axial direction is a cone, an external thread surface is arranged above the cone, the holding body is provided with a through hole which is communicated up and down, the upper half part of the through hole of the holding body is an internal thread hole matched with the external thread surface of the pull rod shaft, the lower half part of the through hole of the holding body is an internal conical surface matched with the cone of the pull rod shaft, the holding body is provided with at least two horizontal and symmetrically distributed cross holes for penetrating through the side surface of the holding body and the through hole of the holding body, and the cross holes are positioned at or below the internal conical surface of the through hole; at least two sliding blocks are respectively arranged in the corresponding transverse holes in a sliding way.
The pull rod shaft is characterized by further comprising a stop nut and a slidable force application hammer, wherein the stop nut is installed at the axial top of the pull rod shaft, a polish rod is arranged above the external thread surface of the pull rod shaft, and a step is formed on the part, higher than the polish rod, of the external thread surface; the slidable force application hammer is slidably sleeved on the polish rod of the pull rod shaft.
Furthermore, the cutting device also comprises an opening cutting screw, a threaded hole matched with the opening cutting screw is longitudinally formed in the outer end of the sliding block in a manner of being attached to the edge, and one side of a nut part of the opening cutting screw is cut flat along the edge of the outer end of the sliding block.
Furthermore, the threaded hole of the sliding block is an incomplete threaded hole, and the missing part of the threaded hole is cut flat along the edge of the outer end of the sliding block.
Furthermore, four transverse holes and four sliding blocks are respectively arranged on the holding body in a cross shape.
A diameter adjustable blind hole bush extracting tool use method, put the slide block into cross bore of the retaining body first, then put the retaining body into bush needing taking out vertically, stretch the latter half of the tie rod shaft into through hole of the retaining body, then screw in; with the screwing of the pull rod shaft, the cone on the lower half part of the pull rod shaft gradually ejects out the sliding block until the outer end face of the sliding block abuts against the inner wall face of the bushing; and finally, the lining is taken out of the workpiece body in a pull rod shaft pulling mode.
The second method for using the diameter-adjustable blind hole bush dismounting tool comprises the steps of firstly placing a sliding block into a transverse hole of a holding body, then vertically placing the holding body into a bush to be taken out, extending the lower half part of a pull rod shaft into a through hole of the holding body, and then screwing in the through hole; with the screwing of the pull rod shaft, the cone on the lower half part of the pull rod shaft gradually ejects out the sliding block until the outer end face of the sliding block abuts against the inner wall face of the bushing; and finally, sliding the force application hammer along the axial direction of the pull rod shaft to impact the stop nut, and taking the bush out of the workpiece body by utilizing impact force.
The third method for using the blind hole bush dismounting tool with the adjustable diameter comprises the steps of firstly rotating an opening cutting screw into a threaded hole of a sliding block, enabling the top of the opening cutting screw to be not higher than the top surface of the sliding block, adjusting a nut cutting opening of the opening cutting screw to be overlapped with a cutting missing part of the threaded hole, then placing the sliding block into a transverse hole of a holding body, vertically placing the holding body into a bush to be taken out, extending the lower half part of a pull rod shaft into a through hole of the holding body, and then screwing in the pull rod shaft; along with the screwing of the pull rod shaft, the cone on the lower half part of the pull rod shaft gradually ejects out the sliding block until the outer end face of the sliding block abuts against the inner wall face of the bushing, and then the opening cutting screw is rotated to clamp the complete part of the nut of the opening cutting screw into the bushing; and finally, the lining is taken out of the workpiece body in a pull rod shaft pulling mode.
The invention has the following beneficial effects:
1. according to the invention, the adjustable blind hole sleeve taking-out tool is designed, the tool has a certain adjusting range, and the application range can be further enlarged by replacing the related matched slide block on the tool. The difficult problem of taking out of the blind hole sleeve with the larger diameter can be effectively solved.
2. The invention can simply and quickly take off the lining through the slidable force applying hammer, and the deformation of the workpiece body is minimized due to the high accuracy of the impact force.
3. The invention adopts the opening cutting screw, and strengthens the linkage between the bushing and the tool.
Drawings
FIG. 1 is a schematic overview of the tool of the present invention;
FIG. 2 is a top view of FIG. 1
Fig. 3 is a schematic view of the retaining body;
FIG. 4 is a schematic view of a slider;
FIG. 5 is a schematic view of a pull rod shaft;
FIG. 6 is a detailed view of the slider and the open cutting screw;
the device comprises a pull rod shaft 1, a stop nut 2, a slidable force applying hammer 3, a retaining body 4, a sliding block 5, an opening cutting screw 6, a bushing 7 and a workpiece body 8.
Detailed Description
This section is an example of the present invention and is provided to explain and illustrate the technical solutions of the present invention. The embodiments of the invention and the features of the embodiments can be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate directions or positional relationships to give the drawings the orientation or positional relationships, and are used for convenience of description and simplicity of description, but do not indicate or imply that the device or case being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of indicated technical features. Thus, features defined as "first", "second", etc. may explicitly or implicitly include more than one of the features. In the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the present invention, it should be noted that unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be interpreted broadly, e.g., as a fixed connection, a detachable connection, or an integral connection; the connection can be mechanical connection or point connection; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention is explained in detail below with reference to the figures and with reference to embodiments.
A diameter-adjustable blind hole bush dismounting tool comprises a pull rod shaft 1, a holding body 4 and a sliding block 5, wherein the lower half part of the pull rod shaft 1 in the axial direction is a cone, an external thread surface is arranged above the cone, the holding body 4 is provided with a through hole which is communicated up and down, the upper half part of the through hole of the holding body 4 is an internal thread hole matched with the external thread surface of the pull rod shaft 1, the lower half part of the through hole of the holding body 4 is an internal cone surface matched with the cone of the pull rod shaft 1, the holding body 4 is provided with at least two horizontal and symmetrically distributed cross holes which are punched through the side surface of the holding body 4 and the through hole of the holding body 4, and the cross holes are positioned on the internal cone surface part of the through hole; at least two sliding blocks 5 are respectively arranged in the corresponding transverse holes in a sliding way.
The pull rod shaft is characterized by further comprising a stop nut 2 and a slidable force applying hammer 3, wherein the stop nut 2 is installed at the axial top of the pull rod shaft 1, a polish rod is arranged above the external thread surface of the pull rod shaft 1, and a step is formed on the part, higher than the polish rod, of the external thread surface; the slidable force applying hammer 3 is slidably sleeved on the polish rod of the pull rod shaft 1.
The cutting device also comprises an opening cutting screw 6, a threaded hole matched with the opening cutting screw 6 is longitudinally formed in the outer end of the sliding block 5 along the edge, and one side of a nut part of the opening cutting screw 6 is flattened along the edge of the outer end of the sliding block 5.
The threaded hole of the sliding block 5 is an incomplete threaded hole, and the missing part of the threaded hole is cut flat along the edge of the outer end of the sliding block 5.
Four transverse holes and four sliding blocks 5 are respectively arranged on the holding body 4 in a cross shape. The transverse holes and the sliding blocks 5 can be respectively provided with three, and the three transverse holes are arranged on the holding body 4 at an included angle of 120 degrees. By analogy, the transverse holes are centrosymmetric, so that the number of the transverse holes is at least two.
A diameter adjustable blind hole bush extracting tool use method, put the slide block into cross bore of the retaining body first, then put the retaining body into bush needing taking out vertically, stretch the latter half of the tie rod shaft into through hole of the retaining body, then screw in; with the screwing of the pull rod shaft, the cone on the lower half part of the pull rod shaft gradually ejects out the sliding block until the outer end face of the sliding block abuts against the inner wall face of the bushing; and finally, the lining is taken out of the workpiece body in a pull rod shaft pulling mode.
The second method for using the blind hole bush dismounting tool with the adjustable diameter comprises the steps of firstly placing a sliding block into a transverse hole of a holding body, then vertically placing the holding body into a bush to be taken out, extending the lower half part of a pull rod shaft into a through hole of the holding body, and then screwing in; with the screwing of the pull rod shaft, the cone on the lower half part of the pull rod shaft gradually ejects out the sliding block until the outer end face of the sliding block abuts against the inner wall face of the bushing; and finally, sliding the force application hammer along the axial direction of the pull rod shaft to impact the stop nut, and taking the bush out of the workpiece body by utilizing impact force.
The third method for using the diameter-adjustable blind hole bush dismounting tool comprises the steps of firstly rotating an opening cutting screw into a threaded hole of a sliding block, enabling the top of the opening cutting screw to be not higher than the top surface of the sliding block, adjusting a nut cutting opening of the opening cutting screw to be overlapped with a cutting missing part of the threaded hole, then placing the sliding block into a transverse hole of a holding body, vertically placing the holding body into a bush to be taken out, extending the lower half part of a pull rod shaft into a through hole of the holding body, and then screwing in the pull rod shaft; with the screwing of the pull rod shaft, the cone on the lower half part of the pull rod shaft gradually ejects out the sliding block until the outer end face of the sliding block abuts against the inner wall face of the bushing, and then the opening cutting screw is rotated to enable the complete part of the nut to be clamped in the bushing; and finally, the lining is taken out of the workpiece body in a pull rod shaft pulling mode.
The diameter-adjustable blind hole sleeve dismounting tool comprises a pull rod shaft 1, a stop nut 2, a slidable force application hammer 3, a retaining body 4, a sliding block 5 and an opening-machinable screw 6, wherein the force application hammer slides along the axial direction of the pull rod shaft 1 to impact the stop nut 2, and the force application hammer 3, the stop nut 2, the pull rod shaft 1, the retaining body 4, the sliding block 5 and the opening-machinable screw 6 sequentially transfer force, so that a bush 7 is taken out of a workpiece body 8 to finish dismounting.
The diameter-adjustable blind hole bushing dismounting tool comprises the following specific steps:
1. the four opening cutting screws 6 are respectively arranged in the screw notches of the four sliding blocks 5, the directions of the screw notches and the incomplete internal threads of the sliding blocks are consistent, and the four opening cutting screws are not higher than the sliding blocks (figure 6A).
2. After the above, the holder 4 is assembled.
3. After the above is completed, the sleeve is placed in the bushing.
4. After the above, the pull rod shaft 1 is screwed in, the pull rod shaft is adjusted by utilizing the screwing length, so that the conical surface of the pull rod shaft pushes the sliding block 5 to be close to the hole wall, the screw is rotated by 180 degrees, and the opening cutting screw 6 cuts the inner wall of the bush, so that the screw thread part of the screw is slightly embedded into the bush (figure 6B).
5. The sliding hammer 3 is inserted into the drawbar shaft 1.
6. The stop nut 2 is screwed in.
7. The force applying hammer slides along the axial direction of the pull rod shaft 1 to impact the stop nut 2, and the force applying hammer 3, the stop nut 2, the pull rod shaft 1, the retaining body 4, the sliding block 5 and the opening cutting screw 6 sequentially pass through the force applying hammer, the stop nut 2, the pull rod shaft 1, the retaining body 4, the sliding block 5 and the opening cutting screw 6 to transfer force, so that the bush 7 is taken out of the workpiece body 8, and the disassembly is completed.

Claims (8)

1. The diameter-adjustable blind hole bush dismounting tool is characterized by comprising a pull rod shaft (1), a holding body (4) and a sliding block (5), wherein the lower half part of the axial direction of the pull rod shaft (1) is a cone, an external thread surface is arranged above the cone, the holding body (4) is provided with a through hole which is communicated up and down, the upper half part of the through hole of the holding body (4) is an internal thread hole matched with the external thread surface of the pull rod shaft (1), the lower half part of the through hole of the holding body (4) is an internal cone matched with the cone of the pull rod shaft (1), the holding body (4) is provided with at least two horizontal and symmetrically distributed cross holes, the side surface of the holding body (4) and the through hole of the holding body (4) are punched through, and the cross holes are positioned at or below the internal cone surface of the through hole; at least two sliding blocks (5) are respectively arranged in the corresponding transverse holes in a sliding way.
2. The diameter-adjustable blind hole bushing dismounting tool is characterized by further comprising a stop nut (2) and a slidable force applying hammer (3), wherein the stop nut (2) is mounted at the axial top of the pull rod shaft (1), a polished rod is arranged above an external thread surface of the pull rod shaft (1), and the external thread surface is higher than the polished rod to form a step; the slidable force applying hammer (3) is slidably sleeved on a polish rod of the pull rod shaft (1).
3. The diameter adjustable blind hole bush dismounting tool is characterized by further comprising an opening cutting screw (6), wherein a threaded hole matched with the opening cutting screw (6) is longitudinally formed in the outer end of the sliding block (5) close to the edge, and one side of a nut part of the opening cutting screw (6) is flattened along the outer end edge of the sliding block (5).
4. A diameter adjustable blind hole bush removal tool according to claim 3, characterized in that the threaded hole of the slide block (5) is an incomplete threaded hole, and the missing part of the threaded hole is cut flat along the outer end edge of the slide block (5).
5. A diameter adjustable blind bush removal tool according to claim 1, characterised in that there are four cross bores and four slide blocks (5) each, the four cross bores being arranged in a cross on the retaining body (4).
6. The diameter-adjustable blind hole bush dismounting tool is characterized in that a sliding block is placed into a transverse hole of a holding body, then the holding body is vertically placed into a bush to be taken out, the lower half part of a pull rod shaft extends into a through hole of the holding body, and then the pull rod shaft is screwed in; with the screwing of the pull rod shaft, the cone on the lower half part of the pull rod shaft gradually ejects out the sliding block until the outer end face of the sliding block abuts against the inner wall face of the bushing; and finally, the lining is taken out of the workpiece body in a pull rod shaft pulling mode.
7. The diameter-adjustable blind hole bush dismounting tool is characterized in that a sliding block is placed into a transverse hole of a holding body, then the holding body is vertically placed into a bush to be taken out, the lower half part of a pull rod shaft extends into a through hole of the holding body, and then the pull rod shaft is screwed in; along with the screwing of the pull rod shaft, the taper body at the lower half part of the pull rod shaft gradually ejects out the sliding block until the outer end face of the sliding block abuts against the inner wall face of the bushing; and finally, sliding the force application hammer along the axial direction of the pull rod shaft to impact the stop nut, and taking the bush out of the workpiece body by utilizing impact force.
8. A diameter adjustable blind hole bush extracting tool use method, use a diameter adjustable blind hole bush extracting tool as in claim 4, characterized by that, rotate the cut screw of the opening into threaded hole of the slide block first, the top of the cut screw of the opening is not higher than the top surface of slide block, and adjust the nut cut of the cut screw of the opening to overlap with cut flat missing part of the threaded hole, then put the slide block into cross bore of the retaining body, put the retaining body into bush needing to take out vertically, stretch the latter half of the tie rod shaft into through-hole of the retaining body, then screw in; along with the screwing of the pull rod shaft, the cone on the lower half part of the pull rod shaft gradually ejects out the sliding block until the outer end face of the sliding block abuts against the inner wall face of the bushing, and then the opening cutting screw is rotated to clamp the complete part of the nut of the opening cutting screw into the bushing; and finally, the lining is taken out of the workpiece body in a pull rod shaft pulling mode.
CN202211219677.5A 2022-09-30 2022-09-30 Diameter-adjustable blind hole bushing dismounting tool and using method Pending CN115533214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211219677.5A CN115533214A (en) 2022-09-30 2022-09-30 Diameter-adjustable blind hole bushing dismounting tool and using method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211219677.5A CN115533214A (en) 2022-09-30 2022-09-30 Diameter-adjustable blind hole bushing dismounting tool and using method

Publications (1)

Publication Number Publication Date
CN115533214A true CN115533214A (en) 2022-12-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211219677.5A Pending CN115533214A (en) 2022-09-30 2022-09-30 Diameter-adjustable blind hole bushing dismounting tool and using method

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