CN112157452B - Positioning tool for processing arc length of bearing bush - Google Patents
Positioning tool for processing arc length of bearing bush Download PDFInfo
- Publication number
- CN112157452B CN112157452B CN202011062581.3A CN202011062581A CN112157452B CN 112157452 B CN112157452 B CN 112157452B CN 202011062581 A CN202011062581 A CN 202011062581A CN 112157452 B CN112157452 B CN 112157452B
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- China
- Prior art keywords
- bearing bush
- arc length
- base
- pressing
- pressing die
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- 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
-
- 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
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
Abstract
The invention discloses a positioning tool for machining the arc length of a bearing bush, which comprises a base, a pressing die and a locking assembly, wherein an accommodating groove which is correspondingly matched with the excircle of the bearing bush and has an upward opening is arranged on the base, the perimeter of the section of the accommodating groove is a standard value of the arc length of the bearing bush, a pressing surface which is correspondingly matched with the inner circle of the bearing bush is arranged on the bottom surface of the pressing die, and the locking assembly comprises a pressing plate and a driving mechanism which drives the pressing plate to move downwards to press the pressing die. The structure is simple, and the arc length processing precision of the bearing bush can be ensured.
Description
Technical Field
The invention relates to bearing bush machining, in particular to a positioning tool for bearing bush arc length machining.
Background
The marine low-speed diesel engine bearing bush is a thin-wall part with a large size, the diameter of the marine low-speed diesel engine bearing bush is generally 400-1000 mm, the outer ring of the marine low-speed diesel engine bearing bush is generally made of low-carbon steel, the inner ring of the marine low-speed diesel engine bearing bush is generally made of alloy with low hardness, and the marine low-speed diesel engine bearing bush cannot be pressed violently during machining. The arc length of the bearing bush is very strict, the error needs to be controlled within 0.03mm, but in a natural state, because the bearing bush has elasticity, the outer circle of the bearing bush is not a standard arc, and the arc length is very difficult to ensure. Therefore, it is necessary to develop a positioning tool suitable for machining the arc length of the bearing.
CN203509658U discloses a positioning mechanism for machining the inner side of a bearing bush and a device for machining the inner side of a bearing bush, wherein two limiting fasteners are respectively disposed at two ends of the cambered surface of each limiting fastener, and can rotate around a fixed shaft. CN202062234U discloses a tool clamp for milling machine for processing bearing bush with a rotary pressing plate. The device consists of a lower module, a middle module, a pressure plate and a positioning block; the middle module is fixed on the lower module, a semi-cylindrical workpiece placing groove which is through from front to back is arranged in the middle of the upper surface of the middle module, a left groove is arranged on the left side of the workpiece placing groove, a right flat groove is arranged on the right side of the workpiece placing groove, and the left groove and the right flat groove are positioned on the same straight line; the left end of the pressing plate is arranged in the left groove, the pressing plate is hinged with the middle module through a horizontal shaft, the right end of the pressing plate is arranged in the right flat groove, one end of the positioning block is pressed on the pressing plate, and the other end of the positioning block is hinged with the middle module through a vertical bolt. The currently disclosed bearing bush positioning mechanism mostly adopts a limiting mechanism to compress the bearing bush in a workpiece placing groove of a base, and is suitable for machining the inner side surface of the bearing bush.
Disclosure of Invention
The invention aims to provide a positioning tool for machining the arc length of a bearing bush, which is simple in structure and can ensure the machining precision of the arc length of the bearing bush.
The positioning tool for machining the arc length of the bearing bush comprises a base, a pressing die and a locking assembly, wherein an accommodating groove which is correspondingly matched with the outer circle of the bearing bush and has an upward opening is formed in the base, the perimeter of the section of the accommodating groove is a standard value of the arc length of the bearing bush, a pressing surface which is correspondingly matched with the inner circle of the bearing bush is arranged on the bottom surface of the pressing die, and the locking assembly comprises a pressing plate and a driving mechanism which drives the pressing plate to move downwards to press the pressing die.
Furthermore, the pressing die is tile-shaped and arc-shaped, the left side and the right side of the top end of the pressing die are respectively provided with a guide part which horizontally extends inwards, the upper side of the free end of each guide part is provided with a first inclined plane, and the bottom parts of the left side and the right side of the pressing plate are respectively provided with a second inclined plane which is correspondingly matched with the first inclined planes.
Furthermore, the guide part is provided with a through hole penetrating through the front end surface and the rear end surface of the pressing die.
Further, the guide part is provided with a connecting through hole and a groove on the inner side surface of the pressing die.
Furthermore, the upper plane of the guide part is lower than the circle center of an inner hole of the bearing bush.
Furthermore, the driving mechanisms are two and are respectively arranged on the front end face and the rear end face of the base, the single driving mechanism comprises a screw rod, a hinged seat fixed on the end face of the base and a connecting seat fixed on the end face of the pressing plate, one end of the screw rod is rotatably connected with the hinged seat, the other end of the screw rod is in threaded connection with the adjusting nut, and an opening clamped with the screw rod is formed in the connecting seat.
Furthermore, limiting plates which are correspondingly matched with the front end surface and the rear end surface of the bearing bush are fixed on the front end surface and the rear end surface of the base.
Further, base terminal surface fixedly connected with pivot, pivot axis perpendicular to base terminal surface, the limiting plate can revolute the rotation of axes, pivot free end threaded connection has lock nut.
Compared with the prior art, the invention has the following beneficial effects.
1. According to the invention, the base is provided with the accommodating groove which is correspondingly matched with the outer circle of the bearing bush and has an upward opening, the perimeter of the section of the accommodating groove is the arc length standard value of the bearing bush, only the part of the bearing bush protruding out of the surface of the base needs to be cut, and the pressing die is adopted to compress and fix the bearing bush from the inner side of the bearing bush, so that the bearing bush can be better attached to the accommodating groove, the influence of the elastic tension of the bearing bush on the arc length processing is avoided, and the processing precision of the arc length of the bearing bush is ensured. After the bearing bush is pressed and fixed, the two sides of the bearing bush are provided with the protruding amount, and the arc length processing of the bearing bush can be realized by cutting off the excessive protruding amount after calculation, so that the operation is convenient and fast.
2. The pressing die is in the shape of a tile-shaped arc, the bottom surface of the pressing die is used as a pressing surface correspondingly matched with the inner circle of the bearing bush, the self weight of the pressing die is greatly reduced on the premise of ensuring the pressing fit, and the bearing bush is prevented from being crushed by the pressing die due to overweight. The first inclined plane through moulding-die top guide part cooperates with the second inclined plane of clamp plate, and the effort that the clamp plate pushed down is used on the moulding-die through two inclined plane cooperations for the moulding-die can circumference evenly compress tightly the axle bush, has guaranteed that the axle bush excircle can closely laminate with the storage tank of base, and then has guaranteed the machining precision of axle bush arc length.
3. The invention realizes the function of downward movement driving of the pressure plate by matching the screw rod, the hinge seat and the connecting seat, and has simple structure and low cost.
Drawings
FIG. 1 is a front view of the tool of the present invention;
FIG. 2 is a left side view of FIG. 1;
fig. 3 is a top view of fig. 1.
In the figure, 1-base, 11-containing groove, 2-pressing die, 21-guiding part, 22-through hole, 23-slotting, 3-pressing plate, 4-screw rod, 5-hinged seat, 51-hinged shaft, 52-first connecting bolt, 53-locating pin, 6-connecting seat, 61-opening, 62-second connecting bolt, 7-adjusting nut, 8-limiting plate, 9-locking nut and 10-bearing bush.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1 to 3, the positioning tool for bearing bush arc length processing includes a base 1, a pressing die 2 and a locking assembly, wherein the base 1 is provided with an accommodating groove 11 which is correspondingly matched with an outer circle of a bearing bush 10 and has an upward opening, a perimeter of a cross section of the accommodating groove 11 is a standard value of bearing bush arc length, a bottom surface of the pressing die 2 is provided with a pressing surface which is correspondingly matched with an inner circle of the bearing bush 10, and the locking assembly includes a pressing plate 3 and a driving mechanism which drives the pressing plate 3 to move downwards to press the pressing die 2.
The pressing die 2 is tile-shaped arc, the left side and the right side of the top end of the pressing die 2 are respectively provided with a guide part 21 which horizontally extends inwards, the upper side of the free end of the guide part 21 is provided with a first inclined plane, and the bottom parts of the left side and the right side of the pressing plate 3 are respectively provided with a second inclined plane which is correspondingly matched with the first inclined plane. When actuating mechanism drive clamp plate 3 pushed down, the effort that clamp plate 3 pushed down was used on moulding-die 2 through two inclined planes cooperation for moulding-die 2 can circumference evenly compress tightly axle bush 10, has guaranteed that the axle bush excircle can closely laminate with the storage tank of base, and then has guaranteed the machining precision of axle bush arc length. Compare in solid moulding-die, on the one hand tile sheet structure can alleviate moulding-die weight by a wide margin, effectively avoided moulding-die self weight too big crushing axle bush 10, on the other hand tile sheet structure has certain deflection, when clamp plate 3 pushes down, because two inclined plane cooperations of clamp plate 3 and moulding-die 2 for the outside expansion in 2 tops of moulding-die, drive axle bush 10 excircle and the inseparable laminating of storage tank 11 on the base 1, avoided axle bush self bullet tension to the influence of arc length processing, guaranteed axle bush 10 arc length machining precision. The upper plane of the pressing die 2 is lower than the circle center of the inner hole of the bearing bush 10, so that when the bearing bush 10 is machined, the pressing die 2 is prevented from interfering with a machining cutter.
The guide part 21 is equipped with the through-hole 22 that link up before the moulding-die, the rear end face, and is equipped with the fluting 23 that connects through-hole 22 and the inboard surface of moulding-die 2 on the guide part 21, when clamp plate 3 pressure was too big, the setting of through-hole 22 and fluting 23 had played overload protection's effect to can also be used for lifting by crane, the moulding-die 2 of being convenient for is transported.
The utility model discloses a clamp plate, including base 1, actuating mechanism, articulated seat 5, connecting seat 6, articulated shaft 52 and adjusting nut 7 threaded connection, actuating mechanism is two, locates respectively on the preceding, the rear end face of base 1, and single actuating mechanism includes screw rod 4, adopts first connecting bolt 52 to be fixed in articulated seat 5 on the base 1 terminal surface and adopts second connecting bolt 62 to be fixed in connecting seat 6 on the clamp plate 3 terminal surface, 4 one ends of screw rod are passed through articulated shaft 52 and are connected with articulated seat 5 rotation, articulated shaft 52 is the horizontal trend, the screw rod 4 other end and adjusting nut 7 threaded connection, be equipped with the opening 61 that blocks mutually with screw rod 4 on the connecting seat 6. In order to guarantee the installation accuracy of the hinged seat 5, the relative positions of the hinged seat 5 and the base 1 are determined by the positioning pin 53, the base 53 is provided with a threaded mounting hole for mounting the positioning pin 53, and the hinged seat 5 is provided with a positioning hole correspondingly matched with the positioning pin 53.
In order to prevent the bearing bush 10 from moving in the front and rear directions, limit plates 8 are fixed on the front and rear end surfaces of the base 1, and the limit plates are correspondingly matched with the front and rear end surfaces of the bearing bush 10. Preferably, 1 terminal surface fixedly connected with pivot of base, pivot axis perpendicular to base terminal surface, limiting plate 8 can revolute the rotation of axes, pivot free end threaded connection has lock nut 9. And the locking nut 9 is unscrewed, and the limiting plate 8 rotates around the rotating shaft, so that the interference between the limiting plate and the accommodating groove 11 on the base 1 is avoided, and the bearing bush 10 is convenient to place. After the bearing bush 10 is placed in place, the limiting plate 8 is rotated around the rotating shaft, the limiting plate 8 acts on the end face of the bearing bush 10, the locking nut 9 is screwed, the position of the limiting plate 8 is fixed through the locking nut 9, and the limiting plate 9 plays a limiting role.
During specific machining, the whole set of tool is hoisted to an equipment workbench, the position of the tool is adjusted, and the tool is fixed through a T-shaped groove in the bottom of the base 1 by mounting screws. The adjusting nuts 7 on the front and rear end faces of the base 1 are unscrewed, the screw rod 4 is rotated around the hinge shaft 51 of the hinge shaft seat 5, the screw rod 4 is separated from the opening 61 on the connecting seat 6, then the pressing plate 3 with the connecting seat 6 is taken down, and then the pressing die 2 is taken down.
The bearing bush 10 is hoisted in the accommodating groove 11 of the base 1, the two ends of the upper plane of the bearing bush 10 have protruding amounts relative to the base 1, and the protruding amounts on the two sides of the top end of the bearing bush 10 are the same. And then the limiting plate 8 is rotated around the rotating shafts on the front end surface and the rear end surface of the base 1, so that the limiting plate 8 is abutted against the end surface of the bearing bush 10, and the locking nut 9 is screwed down. After the bearing bush 10 is placed in place, the pressing die 2 is hoisted to the inner circle of the bearing bush 10, the pressing plate 3 with the connecting seat 6 is installed again, the screw rod 4 is rotated around the hinged shaft 51 of the hinged shaft seat 5, the screw rod 4 is clamped with the opening 61 on the connecting seat 6, the adjusting nut 7 is screwed by using a torque wrench, the torque of the adjusting nut 7 at the front end and the rear end of the base 1 is ensured to be the same, and further the tension of the front end and the rear end of the pressing plate 3 is the same.
After the bearing bush 10 is positioned and compressed, the standard arc length value is subtracted from the technical arc length value according to the requirements of a drawing, and then the standard arc length value is divided by 2 to obtain the protrusion amount to be processed at the top end of the bearing bush 10, the tool setting is based on the upper plane of the base 1, and the corresponding protrusion amount is removed according to the calculated processing amount to complete the processing of the arc length of the bearing bush 10.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (6)
1. The utility model provides a location frock for axle bush arc length processing which characterized in that: the clamping device comprises a base (1), a pressing die (2) and a locking assembly, wherein a containing groove (11) which is through from front to back and is correspondingly matched with the excircle of a bearing bush (10) and has an upward opening is formed in the base (1), the perimeter of the radial section of the containing groove (11) is a standard value of the arc length of the bearing bush, a pressing surface which is correspondingly matched with the inner circle of the bearing bush (10) is arranged on the bottom surface of the pressing die (2), and the locking assembly comprises a pressing plate (3) and a driving mechanism which drives the pressing plate to move downwards to press the pressing die;
the pressing die (2) is in a tile-shaped arc shape, the left side and the right side of the top end of the pressing die are respectively provided with a guide part (21) which horizontally extends inwards, the upper side of the free end of the guide part (21) is provided with a first inclined plane, and the bottom parts of the left side and the right side of the pressing plate (3) are respectively provided with a second inclined plane which is correspondingly matched with the first inclined plane;
the drive mechanism is two, locates respectively on the preceding, rear end face of base (1), and single drive mechanism includes screw rod (4), is fixed in articulated seat (5) on base (1) terminal surface and is fixed in connecting seat (6) on clamp plate (3) terminal surface, screw rod (4) one end is rotated with articulated seat (5) and is connected, the other end and adjusting nut (7) threaded connection, be equipped with opening (61) that block mutually with screw rod (4) on connecting seat (6).
2. The positioning tool for bearing shell arc length machining according to claim 1, characterized in that: the guide part (21) is provided with a through hole (22) which penetrates through the front end face and the rear end face of the pressing die (2).
3. The positioning tool for bearing shell arc length machining according to claim 2, wherein: the guide part (21) is provided with a connecting through hole (22) and a groove (23) on the inner side surface of the pressing die (2).
4. The positioning tool for bearing shell arc length machining according to claim 2, characterized in that: the upper plane of the guide part (21) is lower than the circle center of an inner hole of the bearing bush (10).
5. The positioning tool for bearing shell arc length machining according to claim 1 or 2, wherein the positioning tool comprises: and limiting plates (8) which are correspondingly matched with the front end surface and the rear end surface of the bearing bush (10) are fixed on the front end surface and the rear end surface of the base (1).
6. The positioning tool for bearing shell arc length machining according to claim 5, wherein: base (1) terminal surface fixedly connected with pivot, pivot axis perpendicular to base (1) terminal surface, limiting plate (8) can revolute the rotation of axes, pivot free end threaded connection has lock nut (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011062581.3A CN112157452B (en) | 2020-09-30 | 2020-09-30 | Positioning tool for processing arc length of bearing bush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011062581.3A CN112157452B (en) | 2020-09-30 | 2020-09-30 | Positioning tool for processing arc length of bearing bush |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112157452A CN112157452A (en) | 2021-01-01 |
| CN112157452B true CN112157452B (en) | 2022-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011062581.3A Active CN112157452B (en) | 2020-09-30 | 2020-09-30 | Positioning tool for processing arc length of bearing bush |
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| Country | Link |
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| CN (1) | CN112157452B (en) |
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| DE19924854C1 (en) * | 1999-05-31 | 2000-07-13 | Ks Gleitlager Gmbh | Built-up collar bearing shell has holding tongues at the axial bearing section with cut-back flanks to lock into structured openings at the radial bearing section without distortion and in a secure fit |
| CN103029068A (en) * | 2012-12-06 | 2013-04-10 | 重庆智锐德科技有限公司 | Floating fixture on surface of arc-shaped workpiece |
| CN203596422U (en) * | 2013-10-21 | 2014-05-14 | 李陆君 | Bare conductor splicing fitting |
| CN204621601U (en) * | 2015-03-05 | 2015-09-09 | 内江市农业机械技术推广所 | A kind of Machining of Shaft-type Parts frock |
| CN210908388U (en) * | 2019-10-10 | 2020-07-03 | 成都茂晟滑动轴承有限公司 | Bearing bush end face machining device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20140080747A (en) * | 2012-12-14 | 2014-07-01 | 현대중공업 주식회사 | Jig apparatus for engine bearings processing of ship |
| CN103506689A (en) * | 2013-10-14 | 2014-01-15 | 新乡特种机床制造有限责任公司 | Bearing bush broaching machine clamping device |
| CN204248466U (en) * | 2014-10-16 | 2015-04-08 | 西安志越机电科技有限公司 | Presser type columnar workpiece compressing fixture |
| CN104493304A (en) * | 2014-12-26 | 2015-04-08 | 重庆斯凯迪轴瓦有限公司 | Bearing-bush clamping device |
| CN204673302U (en) * | 2015-05-28 | 2015-09-30 | 广东韶配动力机械有限公司 | A kind of bearing shell shape-setting clamp |
| CN206200598U (en) * | 2016-11-22 | 2017-05-31 | 洛阳风动工具有限公司 | A kind of semicircular ring part tooling fixture |
| CN109623440B (en) * | 2019-01-08 | 2020-04-21 | 武汉船用机械有限责任公司 | Thin wall special-shaped parts's processing frock |
| CN211053448U (en) * | 2019-11-21 | 2020-07-21 | 大丰市明月轴瓦有限公司 | Bearing bush polishing clamp |
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2020
- 2020-09-30 CN CN202011062581.3A patent/CN112157452B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19924854C1 (en) * | 1999-05-31 | 2000-07-13 | Ks Gleitlager Gmbh | Built-up collar bearing shell has holding tongues at the axial bearing section with cut-back flanks to lock into structured openings at the radial bearing section without distortion and in a secure fit |
| CN103029068A (en) * | 2012-12-06 | 2013-04-10 | 重庆智锐德科技有限公司 | Floating fixture on surface of arc-shaped workpiece |
| CN203596422U (en) * | 2013-10-21 | 2014-05-14 | 李陆君 | Bare conductor splicing fitting |
| CN204621601U (en) * | 2015-03-05 | 2015-09-09 | 内江市农业机械技术推广所 | A kind of Machining of Shaft-type Parts frock |
| CN210908388U (en) * | 2019-10-10 | 2020-07-03 | 成都茂晟滑动轴承有限公司 | Bearing bush end face machining device |
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| Publication number | Publication date |
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| CN112157452A (en) | 2021-01-01 |
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