CN111660118A - Multipurpose milling clamp - Google Patents
Multipurpose milling clamp Download PDFInfo
- Publication number
- CN111660118A CN111660118A CN202010533094.4A CN202010533094A CN111660118A CN 111660118 A CN111660118 A CN 111660118A CN 202010533094 A CN202010533094 A CN 202010533094A CN 111660118 A CN111660118 A CN 111660118A
- Authority
- CN
- China
- Prior art keywords
- bottom plate
- bolt
- hole
- locating piece
- fixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
Abstract
The invention discloses a multipurpose milling fixture which comprises a directional bolt (6) and a base plate (1), wherein a mandrel (2) is arranged on the base plate (1), a positioning block (3) which is penetrated through by the mandrel (2) is arranged at the top of the base plate (1), the outer ring of the top surface of the positioning block (3) is an annular plane (4), an inwards concave conical surface (5) is connected to the inner side of the plane (4), the mandrel (2) penetrates through the positioning block (3) along the axis of the conical surface (5), a positioning hole (13) penetrating through the base plate (1) is formed in the top surface of the positioning block (3), a cylindrical pin (14) connecting the positioning block (3) and the base plate (1) is arranged in the positioning hole (13), and pressing mechanisms are arranged on two sides of. The fixture for machining the oil distribution disc has the advantages of low total fixture manufacturing cost, low fixture management cost and high production efficiency, and can improve the qualification rate of finished products.
Description
Technical Field
The invention belongs to the field of tools for oil distribution discs of plunger pumps of quantitative motor series, and particularly relates to a multipurpose milling clamp.
Background
The blank of oil distributing disc of plunger pump in quantitative motor series is in the form of disc, one side of the blank has outward bulged spherical surface, another side is flat end surface, the axial line position has step central hole, the outside of the spherical surface has conical surface connected with peripheral surface, the spherical surface and conical surface are connected by means of cylindrical surface. In the process from the blank to the finished oil distribution plate, two working procedures are needed, wherein in the former working procedure, a spherical surface and a central hole are used for positioning, a flat end surface is pressed tightly, and a crescent hole, a groove and a step hole are processed on the flat end surface by a milling machine; the next procedure is to position the flat end face and the central hole, press the bottom surface of the step of the central hole of the step, and process eight small holes on the spherical surface by using a milling machine, wherein different clamps are used in the two procedures, and the manufacturing price of the clamp used in each procedure is about 4500 yuan. The oil distribution disc belongs to a product manufactured in a large batch, a plurality of stations for processing the oil distribution disc are generally arranged in a factory, and each station is required to be provided with two fixtures, so that the factory is required to be provided with a plurality of fixtures, the total manufacturing cost of the fixtures is high, and the management cost of the fixtures is high. Moreover, before each procedure, workers need to reinstall and correct the clamp, the use is troublesome, the preparation time is long, and the production efficiency of the oil distribution disc is reduced.
Therefore, the existing clamp for machining the oil distribution disc has the defects of high total manufacturing cost, high management cost and low production efficiency.
Disclosure of Invention
The invention aims to provide a multipurpose milling clamp. The fixture for machining the oil distribution disc has the advantages of low total fixture manufacturing cost, low fixture management cost and high production efficiency, and can improve the qualification rate of finished products.
The technical scheme of the invention is as follows: the utility model provides a multi-purpose milling fixture, includes directional bolt and bottom plate, is equipped with the dabber on the bottom plate, and the top of bottom plate is equipped with the locating piece that is passed by the dabber, and the top surface outer lane of locating piece is annular plane, and the inboard conical surface that has the indent that has met mutually of plane, and the dabber passes the locating piece along the axis of conical surface, is equipped with the locating hole that runs through to the bottom plate on the locating piece, is equipped with the cylindric lock of connecting locating piece and bottom plate in the locating hole, is equipped with the bolt.
In the multipurpose milling fixture, the pressing mechanism comprises a pressing plate located above the bottom plate, a bolt through hole is formed in the pressing plate, a bolt in threaded connection with the bottom plate is arranged in the bolt through hole, a spring is sleeved on the bolt and located between the pressing plate and the bottom plate, and an adjusting support is arranged on the outer side of the spring.
In the foregoing multipurpose milling fixture, the adjusting support includes a screw rod connected to the base plate, and a nut is disposed on the screw rod.
In the multi-purpose milling fixture, the taper of the tapered surface is 155 to 163 degrees.
In the multi-purpose milling fixture, the taper of the tapered surface is 158 ° 23'.
In the foregoing multipurpose milling fixture, the top of the positioning block is provided with a plurality of tool holes.
In the multipurpose milling fixture, the pressing plate is provided with a long hole through which a bolt passes, one side of the pressing plate is provided with a flat pressing surface, the other side of the pressing plate is provided with a taper pressing surface, and one end of the pressing plate is provided with an arc surface connecting the flat pressing surface and the taper pressing surface.
Compared with the prior art, the invention has the advantages that through structural optimization, two processes can share one clamp, the manufacturing price of the clamp is about 5000 yuan, each station only needs to be provided with one clamp, the number of the clamps needed to be provided by a factory is reduced by half, and the total manufacturing cost and the management cost of the clamp are greatly reduced. In addition, the clamp is convenient to use, the preparation time is short, and the production efficiency of the oil distribution disc is improved. Meanwhile, in the process of fixing the blank, the blank is not easy to be crushed, so that the qualified rate of the finished oil distribution plate is improved.
Therefore, the fixture for machining the oil distribution disc has the advantages of low total fixture manufacturing cost, low fixture management cost and high production efficiency, and can improve the qualification rate of finished products.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a schematic view of fig. 2 at a-a.
Fig. 4 is an elevation view of the orientation plug.
Fig. 5 is a front view of the platen.
FIG. 6 is a top view of the platen.
Fig. 7 is a front view of the oil distribution pan.
Fig. 8 is a left side view of the oil distribution pan.
Fig. 9 is a right side view of the oil distribution pan.
The labels in the figures are: 1-a bottom plate, 2-a mandrel, 3-a positioning block, 4-a plane, 5-a conical surface, 6-a directional bolt, 7-a pressing plate, 8-a bolt, 9-a spring, 10-a screw rod, 11-a nut, 12-a cutter-letting hole, 13-a positioning hole and 14-a cylindrical pin; 20-spherical surface, 21-flat end surface, 22-step center hole, 23-crescent hole, 24-groove, 25-step hole, 26-small hole, 27-conical surface, 28-cylindrical surface, 29-long hole, 30-flat pressing surface, 31-tapered pressing surface, 32-arc surface and 33-bolt hole.
Detailed Description
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
Examples are given. The multipurpose milling fixture is used for processing an oil distribution disc of a plunger pump of a quantitative motor series shown in figures 7 to 9, a blank to be processed is disc-shaped, one side of the blank is provided with a spherical surface 20 bulging outwards, the other side of the blank is a flat end surface 21, a step central hole 22 is arranged at the axis, the outer side of the spherical surface 20 is provided with a conical surface 27 connected with the peripheral surface, and the spherical surface 20 is connected with the conical surface 27 through a cylindrical surface 28. The flat end face 21 is required to be provided with a crescent hole 23, a groove 24 and a stepped hole 25, and eight small holes 26 are arranged on the spherical surface.
The structure of a multipurpose milling fixture is shown in fig. 1 to 6, and comprises a directional bolt 6 and a bottom plate 1, wherein a mandrel 2 is arranged on the bottom plate 1, the mandrel 2 penetrates through the bottom plate 1, the mandrel 2 and the bottom plate 1 are fixed by screws, tightly matched or welded, a positioning block 3 penetrated by the mandrel 2 is arranged at the top of the bottom plate 1, the outer ring of the top surface of the positioning block 3 is an annular plane 4, the inner side of the plane 4 is connected with an inwards concave conical surface 5, the mandrel 2 penetrates through the positioning block 3 along the axis of the conical surface 5, a positioning hole 13 penetrating through the positioning block 3 to the bottom plate 1 is formed in the positioning hole 13, a cylindrical pin 14 connecting the positioning block 3 and the bottom plate 1 is arranged in the positioning hole 13, a. The bottom plate 1 and the positioning block 3 are positioned in the horizontal direction by the mandrel 2 and the cylindrical pin 14.
The structure of the directional bolt 6 is thick in the middle and thin at two ends. The diameter of the bolt hole 33 and the diameter of the small end of the stepped hole 25 are the same as the diameter of one end of the directional bolt 6.
Hold-down mechanism is equipped with the bolt via hole including the clamp plate 7 that is located bottom plate 1 top on the clamp plate 7, the bolt via hole in be equipped with 1 threaded connection's of bottom plate bolt 8, the cover has spring 9 on the bolt 8, spring 9 is located between clamp plate 7 and the bottom plate 1, the outside of spring 9 is equipped with the regulation and supports.
The pressing plate 7 is provided with a long hole 29 through which the bolt 8 passes, one side of the pressing plate 7 is provided with a flat pressing surface 30, the other side of the pressing plate 7 is provided with a taper pressing surface 31, and one end of the pressing plate 7 is provided with an arc surface 32 which is connected with the flat pressing surface 30 and the taper pressing surface 31.
The adjusting support comprises a screw rod 10 connected with the bottom plate 1, and a nut 11 is arranged on the screw rod 10.
The taper of the conical surface 5 is 155-163 deg., most preferably 158 deg. 23'.
The top of the positioning block 3 is provided with a plurality of cutter holes 12, and the cutter holes 12 extend downwards to penetrate through the bottom plate 1. The cutter relieving hole 12 is used for cutter relieving and chip removal when the crescent hole 23 and the step hole 25 are processed.
The use of the invention: the bottom plate 1 is fixed with a workbench of a vertical machining center, and then two processes are carried out.
In the previous process, the spherical surface 20 is aligned to the conical surface 5, a blank to be processed is placed on the positioning block, and the central hole 22 of the step is penetrated by the mandrel 2, so that the blank is positioned horizontally upwards. The screw 10 is turned so that the upper end face of the screw 10 is equal in height to the flat end face 21 of the blank, and the nut 11 is tightened to keep the height of the screw 10 unchanged. And rotating the bolt 8 to enable the flat pressing surface 30 of the pressing plate 7 to press the flat end surface 21 of the blank so as to fix the blank. The crescent hole 23, the groove 24 and the stepped hole 25 are machined by a milling machine.
In the next procedure, the bolt 8 is unscrewed, the pressing plate 7 is turned over, the blank processed in the previous procedure is turned over, the flat end face 21 of the blank is attached to the plane 4, the step center hole 22 is kept to be penetrated by the mandrel 2, then the directional bolt 6 is installed, one end of the directional bolt 6 sequentially penetrates through the small end of the step hole 25 and the bolt hole 33, and the positioning of the blank in the horizontal direction is achieved. And rotating the bolt 8 to enable the tapered pressing surface 31 of the pressing plate 7 to press the tapered surface 27 of the blank so as to fix the blank. The small hole 26 is machined by a milling machine.
The fixture for machining the oil distribution disc has the advantages of low total fixture manufacturing cost, low fixture management cost and high production efficiency, and can improve the qualification rate of finished products.
Claims (7)
1. Multipurpose milling fixture, its characterized in that: including directional bolt (6) and bottom plate (1), be equipped with dabber (2) on bottom plate (1), the top of bottom plate (1) is equipped with locating piece (3) passed by dabber (2), the top surface outer lane of locating piece (3) is annular plane (4), plane (4) inboard has met conical surface (5) of indent mutually, locating piece (3) are passed along the axis of conical surface (5) in dabber (2), be equipped with locating hole (13) that run through to bottom plate (1) on locating piece (3), be equipped with cylindric lock (14) of connecting locating piece (3) and bottom plate (1) in locating hole (13), be equipped with bolt hole (33) on locating piece (3), the both sides of locating piece (3) all are equipped with hold-down mechanism.
2. The multi-purpose milling fixture of claim 1, wherein: hold-down mechanism is equipped with the bolt via hole including clamp plate (7) that is located bottom plate (1) top on clamp plate (7), be equipped with in the bolt via hole with bottom plate (1) threaded connection's bolt (8), the cover has spring (9) on bolt (8), spring (9) are located between clamp plate (7) and bottom plate (1), the outside of spring (9) is equipped with the regulation and supports.
3. The multi-purpose milling fixture of claim 2, wherein: the adjusting support comprises a screw rod (10) connected with the bottom plate (1), and a nut (11) is arranged on the screw rod (10).
4. The multi-purpose milling fixture of claim 1, wherein: the taper of the conical surface (5) is 155-163 degrees.
5. The multi-purpose milling fixture of claim 4, wherein: the taper of the conical surface (5) is 158 degrees 23'.
6. The multi-purpose milling fixture of claim 1, wherein: the top of the positioning block (3) is provided with a plurality of cutter holes (12).
7. The multi-purpose milling fixture of claim 2, wherein: the clamp plate is characterized in that a long hole (29) penetrated by a bolt (8) is formed in the clamp plate (7), a flat pressing surface (30) is arranged on one side of the clamp plate (7), a taper pressing surface (31) is arranged on the other side of the clamp plate, and an arc surface (32) connected with the flat pressing surface (30) and the taper pressing surface (31) is arranged at one end of the clamp plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010533094.4A CN111660118A (en) | 2020-06-12 | 2020-06-12 | Multipurpose milling clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010533094.4A CN111660118A (en) | 2020-06-12 | 2020-06-12 | Multipurpose milling clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111660118A true CN111660118A (en) | 2020-09-15 |
Family
ID=72387197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010533094.4A Pending CN111660118A (en) | 2020-06-12 | 2020-06-12 | Multipurpose milling clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111660118A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953864A (en) * | 2021-11-15 | 2022-01-21 | 福洛德(上海)传动技术有限公司 | Tool for machining thin-wall conical surface of ring disc part |
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| CN201399692Y (en) * | 2009-05-13 | 2010-02-10 | 中船澄西船舶修造有限公司 | Special fixture of milling machine |
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2020
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| 朱凤霞: "《机械制造工艺学》", 31 January 2019 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113953864A (en) * | 2021-11-15 | 2022-01-21 | 福洛德(上海)传动技术有限公司 | Tool for machining thin-wall conical surface of ring disc part |
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| PB01 | Publication | ||
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Application publication date: 20200915 |