CN113478254A - Work fixture for crank arm - Google Patents
Work fixture for crank arm Download PDFInfo
- Publication number
- CN113478254A CN113478254A CN202110593416.9A CN202110593416A CN113478254A CN 113478254 A CN113478254 A CN 113478254A CN 202110593416 A CN202110593416 A CN 202110593416A CN 113478254 A CN113478254 A CN 113478254A
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- China
- Prior art keywords
- pressing plate
- base
- crank arm
- groove
- hole
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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
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention provides a crank arm tooling fixture, which belongs to the technical field of mechanical equipment and particularly comprises a first fixture assembly and a second fixture assembly, wherein the first fixture assembly comprises a first base and a first pressing plate, a first groove is formed in the upper surface of the first base, a second groove is formed in the upper surface of the first pressing plate, the shape and size of the first groove and the second groove after being spliced mutually are matched with those of the crank arm, the second fixture comprises a second base, a second pressing plate and a clamping part, a third groove is formed in the second base, a counter bore is formed in the bottom of the third groove, the second pressing plate is used for positioning the crank arm, and a first machining hole and a second machining hole are formed in the second base. The work fixture for the crank arm is used for machining the crank arm, and has the advantages of simple process, few working procedures, high efficiency and more attractive appearance of the crank arm.
Description
Technical Field
The invention relates to a machining tool, in particular to a work fixture for a crank arm.
Background
The crank arm is an interlocking drive on the switchgear and is used in large quantities. The existing processing mode is as follows: and (3) making the outer shape of the crank arm and a large hole of the crank arm by using a casting mould, reserving the processing amount of the large hole of the crank arm, processing the large hole of the crank arm by using a numerical control lathe, then positioning the large hole, making a pin positioning hole at the front end of a drilling jig, and welding the processed pin on the crank arm in a hole positioning mode. The processing mode has high cost, complex process and longer consumed working hours, and the welding scars left in the welding process influence the appearance of the crank arm.
Disclosure of Invention
The invention aims to provide the crank arm tooling clamp which is simple in process, few in working procedures, high in efficiency and more attractive in appearance.
In order to solve the problems, the invention provides a work fixture for crank arms, which comprises a first fixture component and a second fixture component,
the first clamp component comprises a first base and a first pressing plate, the first base is detachably connected with the first pressing plate, a first groove is formed in the upper surface of the first base, a second groove is formed in the upper surface of the first pressing plate, the shape and the size of the first groove and the second groove after being spliced mutually are matched with those of the crank arm,
the cylinder table pin is arranged on the crank arm, the second clamp comprises a second base, a second pressing plate and a clamping part, the second base and the clamping part are fixed with each other, the second pressing plate is connected to the second base, a third groove is formed in the second base and corresponds to the crank arm, a counter bore is formed in the bottom of the third groove and corresponds to the cylinder table pin, the second pressing plate is connected to one side face, provided with the third groove, of the second base, when the crank arm is placed in the third groove, the second pressing plate is used for positioning the crank arm, and a first machining hole and a second machining hole are formed in the second base.
Furthermore, a counter bore is formed in the bottom of the first groove, and the diameter of the counter bore is larger than that of a large hole of the crank arm.
Furthermore, the first base and the first pressing plate are placed side by side, at least two connecting grooves are formed in the side wall, facing the first pressing plate, of the first base, threads are arranged on the inner walls of the connecting grooves, at least two connecting holes are formed in the first pressing plate, the connecting holes are threaded holes, the connecting grooves correspond to the connecting holes one to one, and at least two connecting bolts penetrate through one connecting hole respectively and extend into one connecting groove to be in threaded connection with the wall of the connecting groove.
The pressure spring is arranged between the first base and the first pressing plate, and the elastic direction of the pressure spring is parallel to the axis direction of the connecting bolt.
Furthermore, a pressing plate installation groove is formed in the first base, the depth of the pressing plate installation groove is equal to the thickness of the first pressing plate, and the first pressing plate is placed in the pressing plate installation groove.
Furthermore, the clamping part is a cylindrical boss, the clamping part is connected to one side face, far away from the third groove, of the second base, a positioning face is arranged on the second base, the positioning face is a plane tangent to the cylindrical face of the clamping part, and the first machining hole is formed in the positioning face.
Furthermore, one end of the second pressing plate is rotatably connected to the second base, the other end of the second pressing plate is provided with a notch, the second pressing plate is further provided with a positioning column, the connecting point of the second pressing plate and the second base and the positioning column are respectively located on two sides of the third groove, and the notch is suitable for being clamped on the positioning column.
Further, the depth of the third groove is smaller than the thickness of the crank arm.
Furthermore, a notch is arranged at a position, corresponding to the second machining hole, on the second base, and the position, provided with the second machining hole, on the notch is a plane.
When the tool clamp for the crank arm is used for machining the crank arm, the cylindrical table pin of the crank arm is integrally cast and formed, and the crank arm can be machined and formed after being clamped and positioned by the first clamp assembly and the second clamp assembly after being cast, so that the machining process is reduced, the machining working hour is shortened, the efficiency is improved, welding is not needed for casting and forming, the formation of craters is avoided, and the appearance of the crank arm is more attractive.
Drawings
Fig. 1 is a schematic structural view of a first clamp assembly of a work clamp for a crank arm according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a second clamp assembly of the crank arm tooling clamp according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of the crank arm;
fig. 4 is a schematic structural view of a working state of a second clamp assembly of the work clamp for the crank arm according to the embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The terms "upper", "lower", "front", "rear", "left" and "right" and the like appearing in the embodiments of the present invention indicate directions or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium; the specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
If there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.
The invention provides a crank arm tooling clamp, which comprises a first clamp component 01 and a second clamp component 02, as shown in figures 1 and 2, the first clamp component 01 comprises a first base 11 and a first pressing plate 12, the first base 11 is detachably connected with the first pressing plate 12, the upper surface of the first base 11 and the upper surface of the first pressing plate 12 are in the same plane, the upper surface of the first base 11 is provided with a first groove 111, the upper surface of the first pressing plate 12 is provided with a second groove 121, the shape and the size of the first groove 111 and the second groove 121 after being spliced are matched with the shape and the size of a crank arm 03, the crank arm 03 is used for being placed in the first groove 111 and the second groove 121,
as shown in fig. 3 and 4, the crank arm 03 is provided with a cylindrical pin 31, a large hole 32 and a side hole 33, the cylindrical pin 31 is provided with a cylindrical pin hole 34, the second fixture 02 comprises a second base 21, a second pressing plate 22 and a clamping portion 23, the second base 21 and the clamping portion 23 are fixed to each other, the second pressing plate 22 is connected to the second base 21, the second base 21 is provided with a third groove 211, the third groove 211 is adapted to the crank arm 03, the third groove 211 is used for accommodating the crank arm 03, the bottom of the third groove 211 is provided with a counter bore 212, the counter bore 212 is adapted to the cylindrical pin 31, the second pressing plate 22 is connected to a side surface of the second base 21 provided with the third groove 211, when the crank arm 03 is placed in the third groove 211, the second pressing plate 22 is used for positioning and pressing the crank arm 03, and the second base 21 is further provided with a first machining hole 213 for machining the side hole 33 and a second machining hole 214 for machining the cylindrical table pin hole 34. When the crank arm fixture is used for machining the crank arm 03, the first process is firstly carried out, the first pressing plate 12 is separated from the first base 11, a blank of the crank arm 03 is placed into the first groove 111 and the second groove 121, the cylindrical table pin 31 faces upwards, then the first pressing plate 12 is locked, the crank arm fixture is placed on a machining center workbench, and the large hole 32 of the crank arm 03 and the outer diameter of the cylindrical table pin 31 are machined. Because the big hole 32 of the crank arm 03 and the cylindrical table pin 31 have relative position requirements, the machining center can be machined by a CNC program at one time, and the dimensional accuracy can be completely ensured; and then, in the second process, a side hole 33 on the rear side of the crank arm 03 and a cylindrical table pin hole 34 formed in the cylindrical table pin 31 are machined, the second base 21 is fixed through the clamping part 23, the crank arm 03 after the first process is finished is placed in the third groove 211, the cylindrical table pin 31 is placed in the counter bore 212, the second pressing plate 22 presses the crank arm 03, the side hole 33 is machined through the first machining hole 213, and the cylindrical table pin hole 34 is machined through the second machining hole 214, so that the crank arm 03 can be machined. When the tool fixture for the crank arm is used for machining the crank arm, the cylindrical table pin 31 of the crank arm 03 is integrally cast and formed, and the crank arm can be machined and formed after being clamped and positioned by the first fixture component 01 and the second fixture component 02 after casting, so that the machining process is reduced, the machining time is shortened, the efficiency is improved, welding is not needed for casting and forming, welding scars are avoided, and the appearance of the crank arm 03 is more attractive.
Optionally, a counter bore 115 is formed in the bottom of the first groove 111, and the diameter of the counter bore 115 is larger than the diameter of the large hole 32 of the crank arm 03, so that the milling cutter can give way in the process of milling the large hole 32.
Optionally, the first base 11 and the first pressing plate 12 are placed side by side, two or more connecting grooves are formed in the side wall, facing the first pressing plate 12, of the first base 11, threads are formed in the inner wall of each connecting groove, two or more connecting holes are formed in the first pressing plate 12, each connecting hole is a threaded hole, the connecting grooves correspond to the connecting holes one to one, two or more connecting bolts 14 penetrate through one connecting hole respectively and extend into one connecting groove to be in threaded connection with the connecting groove wall, the first base 11 and the first pressing plate 12 are connected with each other through the connecting bolts 14, and in this embodiment, the number of the connecting bolts 14 is two.
Optionally, the tooling fixture for the crank arm according to the embodiment of the present invention further includes a pressure spring 13, the pressure spring 13 is disposed between the first base 11 and the first pressure plate 12, and an elastic direction of the pressure spring 13 is parallel to an axial direction of the connecting bolt 14. Due to the arrangement of the compression spring 13, after the connecting bolt 14 is loosened, the compression spring 13 is released, the first pressing plate 12 is automatically separated from the first base 11, and the use is more convenient.
Optionally, a pressing plate installation slot 112 is further formed in the first base 11, the depth of the pressing plate installation slot 112 is equal to the thickness of the first pressing plate 12, and the first pressing plate 12 is placed in the pressing plate installation slot 112.
Optionally, the clamping portion 23 is a cylindrical boss, the clamping portion 23 is connected to a side surface of the second base 21 away from the third groove 211, a positioning surface 24 is disposed on the second base 21, the positioning surface 24 is a plane tangent to a cylindrical surface of the clamping portion 23, and the first machining hole 213 is opened on the positioning surface 24. When the second process is carried out, the clamping part 23 is clamped on the mechanical power chuck, the positioning surface 24 is used for positioning, and the clamping part 23 adopts the cylindrical boss, so that the clamping and positioning of the second base 21 are more convenient.
Optionally, one end of the second pressing plate 22 is rotatably connected to the second base 21, a notch 221 is formed in the other end of the second pressing plate 22, a positioning column 222 is further disposed on the second pressing plate 22, a connection point of the second pressing plate 22 and the second base 21 and the positioning column 222 are respectively located at two sides of the third groove 211, and the notch 221 is suitable for being clamped on the positioning column 222. Specifically, one end of the second presser plate 22 is hinged to the second base 21. In the second step, the second pressing plate 22 is rotated to open the third groove 211, the crank arm 03 after the first step is placed in the third groove 211, and then the second pressing plate 22 is rotated again to make the second pressing plate 22 approach the crank arm 03 and clamp the notch 221 of the second pressing plate 22 on the positioning column 222, so that the crank arm 03 is fixed. One end of the second pressing plate 22 is rotatably connected to the second base 21, so that the crank arm 03 can be conveniently taken and placed.
Optionally, the depth of the third groove 211 is smaller than the thickness of the crank arm 03, so that the second pressing plate 22 can press the crank arm 03 in the third groove 211, the crank arm 03 is prevented from being displaced in the machining process, and the machining precision is ensured.
Optionally, a notch 215 is disposed on the second base 21 at a position corresponding to the second machining hole 214, and a position on the notch 215 where the second machining hole 214 is disposed is a plane. After the side hole 33 is machined, the power head is rotated by 90 degrees, so that the plane of the notch 215 provided with the second machining hole 214 is in a horizontal state, the cylindrical table pin hole 34 at the front end of the crank arm 03 is machined, and the position of the notch 215 provided with the second machining hole 214 is a plane, so that the crank arm 03 can be machined and positioned conveniently.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.
Claims (9)
1. A work fixture for crank arms is characterized by comprising a first fixture component (01) and a second fixture component (02),
the first clamp assembly (01) comprises a first base (11) and a first pressing plate (12), the first base (11) is detachably connected with the first pressing plate (12), a first groove (111) is formed in the upper surface of the first base (11), a second groove (121) is formed in the upper surface of the first pressing plate (12), the shape and the size of the first groove (111) and the second groove (121) after being spliced mutually are matched with those of the crank arm (03),
the crank arm (03) is provided with a cylindrical table pin (31), the second clamp (02) comprises a second base (21), a second pressing plate (22) and a clamping part (23), the second base (21) and the clamping part (23) are fixed with each other, the second pressing plate (22) is connected to the second base (21), the second base (21) is provided with a third groove (211), the third groove (211) is adapted to the crank arm (03), the bottom of the third groove (211) is provided with a counter bore (212), the counter bore (212) is adapted to the cylindrical table pin (31), the second pressing plate (22) is connected to one side surface of the second base (21) provided with the third groove (211), and when the crank arm (03) is placed in the third groove (211), the second pressing plate (22) is used for positioning the crank arm (03), the second base (21) is also provided with a first processing hole (213) and a second processing hole (214).
2. The crank arm tooling clamp of claim 1, wherein,
a counter bore (115) is formed in the bottom of the first groove (111), and the diameter of the counter bore (115) is larger than that of a large hole (32) of the crank arm (03).
3. The crank arm tooling clamp of claim 2, wherein,
the first base (11) and the first pressing plate (12) are placed side by side, at least two connecting grooves are formed in the side wall of the first pressing plate (12) towards the first base (11), threads are arranged on the inner wall of each connecting groove, at least two connecting holes are formed in the first pressing plate (12), each connecting hole is a threaded hole, the connecting grooves correspond to the connecting holes in a one-to-one mode, and at least two connecting bolts (14) penetrate through one connecting hole respectively and extend into one connecting groove and are in threaded connection with the connecting groove walls.
4. The crank arm tooling clamp of claim 3, wherein,
the pressing device is characterized by further comprising a pressure spring (13), wherein the pressure spring (13) is arranged between the first base (11) and the first pressing plate (12), and the elastic direction of the pressure spring (13) is parallel to the axis direction of the connecting bolt.
5. The crank arm tooling clamp of claim 4, wherein,
the first base (11) is further provided with a pressing plate installation groove (112), the depth of the pressing plate installation groove (112) is equal to the thickness of the first pressing plate (12), and the first pressing plate (12) is placed in the pressing plate installation groove (112).
6. The crank arm tooling clamp of claim 5, wherein,
clamping part (23) are cylindrical bosses, clamping part (23) connect in keeping away from of second base (21) on the side of third recess (211), be provided with locating surface (24) on second base (21), locating surface (24) be with the tangent plane of the face of cylinder of clamping part (23), first processing hole (213) are seted up on locating surface (24).
7. The crank arm tooling clamp of claim 6, wherein,
one end of the second pressing plate (22) is rotatably connected to the second base (21), a notch (221) is formed in the other end of the second pressing plate (22), a positioning column (222) is further arranged on the second pressing plate (22), the connecting point of the second pressing plate (22) and the second base (21) and the positioning column (222) are respectively located on two sides of the third groove (211), and the notch (221) is suitable for being clamped on the positioning column (222).
8. The crank arm tooling clamp of claim 7, wherein,
the depth of the third groove (211) is smaller than the thickness of the crank arm (03).
9. The crank arm tooling clamp of claim 8, wherein,
a notch (215) is formed in the position, corresponding to the second machining hole (214), of the second base (21), and the position, where the second machining hole (214) is formed, of the notch (215) is a plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110593416.9A CN113478254B (en) | 2021-05-28 | 2021-05-28 | Work fixture for crank arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110593416.9A CN113478254B (en) | 2021-05-28 | 2021-05-28 | Work fixture for crank arm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113478254A true CN113478254A (en) | 2021-10-08 |
| CN113478254B CN113478254B (en) | 2022-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110593416.9A Active CN113478254B (en) | 2021-05-28 | 2021-05-28 | Work fixture for crank arm |
Country Status (1)
| Country | Link |
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| CN (1) | CN113478254B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205074822U (en) * | 2015-11-04 | 2016-03-09 | 温州兴机电器有限公司 | Energy storage turning arm rat holing anchor clamps |
| JP2018039073A (en) * | 2016-09-07 | 2018-03-15 | ファナック株式会社 | Workpiece pressing device clamping and fixing workpiece |
| CN207120009U (en) * | 2017-05-31 | 2018-03-20 | 安庆中船动力配套有限公司 | A kind of gonnecting rod body boring and milling fixture |
| CN108127432A (en) * | 2017-11-30 | 2018-06-08 | 彩虹（合肥）液晶玻璃有限公司 | A kind of connecting lever positioning clamp for machining and processing method |
| CN109807599A (en) * | 2018-12-24 | 2019-05-28 | 河南平高电气股份有限公司 | Connecting lever riveting positioning tool |
| CN110561045A (en) * | 2019-08-30 | 2019-12-13 | 广东长盈精密技术有限公司 | workpiece machining method |
| CN110722375A (en) * | 2019-10-29 | 2020-01-24 | 湖北三江航天红阳机电有限公司 | Fixing device and method for processing n-shaped arc parts |
-
2021
- 2021-05-28 CN CN202110593416.9A patent/CN113478254B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205074822U (en) * | 2015-11-04 | 2016-03-09 | 温州兴机电器有限公司 | Energy storage turning arm rat holing anchor clamps |
| JP2018039073A (en) * | 2016-09-07 | 2018-03-15 | ファナック株式会社 | Workpiece pressing device clamping and fixing workpiece |
| CN207120009U (en) * | 2017-05-31 | 2018-03-20 | 安庆中船动力配套有限公司 | A kind of gonnecting rod body boring and milling fixture |
| CN108127432A (en) * | 2017-11-30 | 2018-06-08 | 彩虹（合肥）液晶玻璃有限公司 | A kind of connecting lever positioning clamp for machining and processing method |
| CN109807599A (en) * | 2018-12-24 | 2019-05-28 | 河南平高电气股份有限公司 | Connecting lever riveting positioning tool |
| CN110561045A (en) * | 2019-08-30 | 2019-12-13 | 广东长盈精密技术有限公司 | workpiece machining method |
| CN110722375A (en) * | 2019-10-29 | 2020-01-24 | 湖北三江航天红阳机电有限公司 | Fixing device and method for processing n-shaped arc parts |
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| Publication number | Publication date |
|---|---|
| CN113478254B (en) | 2022-04-12 |
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