CN112157450A - Clamping device suitable for machining of cast valve body - Google Patents
Clamping device suitable for machining of cast valve body Download PDFInfo
- Publication number
- CN112157450A CN112157450A CN202011028830.7A CN202011028830A CN112157450A CN 112157450 A CN112157450 A CN 112157450A CN 202011028830 A CN202011028830 A CN 202011028830A CN 112157450 A CN112157450 A CN 112157450A
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- China
- Prior art keywords
- clamp
- pressing
- valve body
- clamping device
- taper pin
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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)
- Valve Housings (AREA)
Abstract
The invention discloses a clamping device suitable for machining a cast valve body, which comprises a clamp base, clamp side plates, an improved positioning taper pin, a limiting block, a side pressing taper pin, a clamp upper pressing plate and a pressing taper pin, wherein the clamp base is provided with a clamping groove; the fixture base is symmetrically provided with improved positioning taper pins, and the limiting blocks are symmetrically arranged on the fixture base through bolts; two ends of the clamp base are symmetrically provided with clamp side plates; two ends of the upper pressing plate of the clamp are respectively connected with the top ends of the side plates of the clamp; a pressing taper pin is arranged on the upper pressing plate of the clamp; the inner wall of the clamp side plate is connected with a pressing block and a side pressing taper pin through a slender bolt. The invention can provide accurate positioning for the workpiece, can provide stable and sufficient pressing force, is not easy to cause the workpiece deflection in the face milling process with continuously changing load, and can meet the processing quality requirement of the cast valve body.
Description
Technical Field
The invention relates to a clamping device suitable for machining of a cast valve body, and belongs to the technical field of machining.
Background
The clamping action of the cast valve body machining is an especially important one-step operation in the surface milling process of the hydraulic multi-way valve, and the superiority and inferiority of the clamping device directly influence the machining quality of the cast valve body.
At present, two common clamping modes for machining a hydraulic casting valve body at home and abroad are provided, one mode is quick clamping by a clamp, the performance output is unstable, the clamping is not firm enough, and the problem of lateral deviation of the machining of the valve body is easily caused; the other type is that a clamping device adopting a common conical positioning pin cannot automatically center, so that the problem of machining deflection of the valve body can be caused, and the machining quality of the cast valve body is influenced. Therefore, the clamping device suitable for machining the cast valve body is researched, and the clamping device has a positive promoting effect on improving the machining quality of the cast valve body and improving the machining efficiency of a workshop.
The Chinese patent discloses a full-automatic synchronous pressing machine (CN 107498373A) for adjusting and pressing workpieces to be processed, which comprises a workbench, a clamp mechanism, an adjusting mechanism and a righting and pressing mechanism, wherein the clamp mechanism comprises a pair of limit stops capable of moving in opposite directions, the adjusting mechanism comprises a moving platform, a limit switch and an adjusting mechanism push plate, and the limit switch moves along with the moving platform and can touch a contact on a first limit stop; the righting and pressing mechanism comprises four pressing rods, an electromagnetic locking hinge, a half gear rod and a double-headed gear rod, and the pressing rods finish the righting and locking process through the electromagnetic locking hinge, the half gear rod and the double-headed gear rod respectively.
The full-automatic synchronous pressing machine in the prior art is only suitable for simple pressing and cannot provide accurate positioning for a workpiece, the working surface of the push plate of the adjusting mechanism is opposite and parallel to the working surface of the centering plate, the workpiece cannot be ensured to be not deflected, stable and enough pressing force cannot be provided, the workpiece is easy to deflect in the face milling process with continuously changed load, and the requirement on the processing quality of a cast valve body cannot be met.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a clamping device suitable for machining a cast valve body, which introduces a self-centering technology of a machining clamp of the cast valve body according to the positioning requirement of machining the cast valve body, realizes the automatic centering of a valve hole by optimizing a positioning pin and reasonably arranging the mechanical interface position of the positioning pin, and solves the problem of valve body machining deflection caused by inaccurate positioning of the valve hole; according to the structural characteristics of the cast valve body, a double-top support symmetrical compression technology of a machining clamp of the cast valve body is introduced, firm clamping of the valve body is realized through compression and support optimization of the machining clamp, and the problem of lateral offset of machining of the valve body caused by infirm clamping of the valve body is solved.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a clamping device suitable for casting valve body machine tooling, includes anchor clamps base, anchor clamps curb plate, improvement location taper pin, stopper, side briquetting, side compression taper pin, anchor clamps top board and compresses tightly the taper pin.
The fixture base is symmetrically provided with improved positioning taper pins, and the limiting blocks are symmetrically arranged on the fixture base through bolts; two ends of the clamp base are symmetrically provided with clamp side plates; two ends of the upper pressing plate of the clamp are respectively connected with the top ends of the side plates of the clamp; a pressing taper pin is arranged on the upper pressing plate of the clamp;
the inner wall of the clamp side plate is connected with a pressing block and a side pressing taper pin through a long and thin bolt.
Furthermore, the upper pressing plate of the clamp is of a hollow cuboid structure with an opening on the top surface; three pressing taper pins are arranged on the upper pressing plate of the clamp; the three pressing taper pins are distributed on the upper pressing plate in a triangular shape.
Furthermore, the limiting block is connected with the clamp base through a bolt.
Furthermore, the locating pin cone is connected with the clamp base through a bolt.
Furthermore, the number of the side pressing blocks is two, and the two side pressing blocks are symmetrical left and right.
Furthermore, the number of the side compression taper pins is two, and the two side compression taper pins are symmetrical left and right.
The invention has the beneficial effects that: the problem of because valve opening location is inaccurate to cause valve body machine tooling skew is solved, improve the machine tooling quality of casting valve body, effectively promote the production and manufacture level moreover.
The positioning precision is high: according to the positioning requirement of machining of the cast valve body, a self-centering technology is introduced, improvement is performed on the basis of the structure of a traditional taper pin, three small planes are symmetrically milled on the full taper surface of the taper pin, the end surface of a valve core hole of the cast valve body is in three-point contact with the taper pin, the intersecting line of the three small planes is a circle, the three small planes are equivalent to six thrust positioning supports, six degrees of freedom can be limited, automatic centering of the valve hole is realized, the reliable positioning effect is achieved, and the problem of machining deflection of the valve body caused by inaccurate positioning of the valve hole is effectively solved;
the clamping effect is good: according to the structural characteristics of the cast valve body, a double-top support symmetrical pressing technology is introduced, positioning taper pins and auxiliary supports are symmetrically arranged on a clamp base, pressing taper pins are reasonably arranged on a clamp upper pressing plate according to the structure of the cast valve body, a firm clamping effect is achieved through the pressing and supporting optimization of a machining clamp, and the problem of lateral deviation of valve body machining caused by the fact that the valve body is not firmly clamped is solved;
the degree of flexibility is high: the positions of the pressing taper pins of the upper pressure plate and the side plate of the clamping device can be adjusted to a certain degree according to the structural characteristics of the cast valve body, the requirement on the external shape of the cast valve body is not high, the clamping device is suitable for most types of cast valve bodies, and different types of cast valve bodies can be effectively clamped.
Drawings
FIG. 1 is a schematic front view of a clamping device suitable for machining cast valve bodies in accordance with the present invention;
FIG. 2 is a side view of a clamping device suitable for machining cast valve bodies according to the present invention;
fig. 3 is a schematic top view of a clamping device suitable for machining cast valve bodies according to the present invention.
In the figure, the clamp comprises a clamp base 1, a clamp side plate 2, a clamp side plate 3, an improved positioning taper pin 4, a limiting block 5, a side pressing block 6, a side pressing taper pin 7, an upper pressing plate 8 and a pressing taper pin.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood, however, that the description herein of specific embodiments is only intended to illustrate the invention and not to limit the scope of the invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, and the terms used herein in the specification of the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention.
As shown in fig. 1 and 2, a clamping device suitable for machining a casting valve body comprises a clamp base 1, a clamp side plate 2, an improved positioning taper pin 3, a limiting block 4, a side pressing block 5, a side pressing taper pin 6, a clamp upper pressing plate 7 and a pressing taper pin 8;
the fixture base is symmetrically provided with improved positioning taper pins 3, and the limiting blocks 4 are symmetrically arranged on the fixture base 1 through bolts; two ends of the clamp base 1 are symmetrically provided with clamp side plates 2; two ends of the clamp upper pressing plate 7 are respectively connected with the top ends of the clamp side plates 5; a pressing taper pin 8 is arranged on the upper pressing plate 7 of the clamp; the inner wall of the clamp side plate 2 is connected with a pressing block 5 and a side pressing taper pin 6 through a slender bolt.
Furthermore, the upper clamp plate 7 is of a hollow cuboid structure with an open top surface; three pressing taper pins 8 are arranged on the upper pressing plate 7 of the clamp; the three pressing taper pins 8 are distributed on the upper pressing plate in a triangular shape.
Furthermore, the limiting block 4 is connected with the clamp base 1 through bolts.
Furthermore, the dowel cone 3 is bolted to the clamp base 1.
Furthermore, there are two side pressing blocks 5, and the two side pressing blocks 5 are symmetrical left and right.
Furthermore, two side compression taper pins 6 are provided, and the two side compression taper pins 6 are symmetrical left and right.
The invention adopts a double-top support symmetrical compression technology, threaded bottom holes are symmetrically arranged on a clamp base 1 according to the characteristics of a valve body, and an improved positioning pin cone 3 and a limiting block 4 are connected on a bottom plate through bolts; the upper clamp plate 7 is reasonably arranged and connected with the position of a threaded hole required by the compression taper pin 8 according to the position characteristic of an orifice at the upper end of the cast valve body.
During operation places the valve body in the limiting range of stopper 4, and the automatic centering location of valve body bottom surface drill way through improvement location taper pin 3, then adjusts the valve body that compresses tightly of top board 8, through mutually supporting of anchor clamps top board 7 and anchor clamps base 1, reaches firm support and firm effect that compresses tightly, solves because the valve body clamping is not firm and causes the problem of valve body two-sided milling lateral deviation.
Meanwhile, in order to enhance the clamping capacity of the clamping device, threaded holes are drilled in a side plate 2 of the clamp, a side pressing block 5 and a side pressing taper pin 6 are connected through a slender bolt, and a torque wrench is used for adjusting the length of the side pressing taper pin 6 during working so as to press the valve body; through the symmetrical multi-stage compression, the firm clamping of the valve body is realized, and the problem of lateral offset of the double-sided milling of the valve body caused by the infirm clamping of the valve body is further solved. The introduction of the self-centering technology and the double-top support symmetrical compression technology of the double-sided numerical control milling clamp for the cast valve body enables the clamping device to greatly improve the double-sided milling processing quality of the cast valve body and effectively improve the production and manufacturing level of enterprises.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents or improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. The utility model provides a clamping device suitable for cast valve body machine tooling which characterized in that: the method comprises the following steps: the clamp comprises a clamp base (1), clamp side plates (2), an improved positioning taper pin (3), a limiting block (4), a side pressure block (5), a side pressure taper pin (6), a clamp upper pressure plate (7) and a pressure taper pin (8); the fixture base is symmetrically provided with improved positioning taper pins (3), and the limiting blocks (4) are symmetrically arranged on the fixture base (1) through bolts; two ends of the clamp base (1) are symmetrically provided with clamp side plates (2); two ends of the clamp upper pressure plate (7) are respectively connected with the top ends of the clamp side plates (5); a pressing taper pin (8) is arranged on the clamp upper pressing plate (7); the inner wall of the clamp side plate (2) is connected with a pressing block (5) and a side pressing taper pin (6) through a slender bolt.
2. A clamping device suitable for machining cast valve bodies according to claim 1, wherein: the upper clamp pressing plate (7) is of a hollow cuboid structure with an opening on the top surface; three pressing taper pins (8) are arranged on the upper pressing plate (7) of the clamp; the three pressing taper pins (8) are distributed on the upper pressing plate in a triangular shape.
3. A clamping device suitable for machining cast valve bodies according to claim 1, wherein: the limiting block (4) is connected with the clamp base (1) through bolts.
4. A clamping device suitable for machining cast valve bodies according to claim 1, wherein: the positioning pin cone (3) is connected with the clamp base (1) through a bolt.
5. A clamping device suitable for machining cast valve bodies according to claim 1, wherein: the number of the side pressing blocks (5) is two, and the two side pressing blocks (5) are symmetrical left and right.
6. A clamping device suitable for machining cast valve bodies according to claim 1, wherein: the number of the side compression taper pins (6) is two, and the two side compression taper pins (6) are symmetrical left and right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011028830.7A CN112157450A (en) | 2020-09-27 | 2020-09-27 | Clamping device suitable for machining of cast valve body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011028830.7A CN112157450A (en) | 2020-09-27 | 2020-09-27 | Clamping device suitable for machining of cast valve body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112157450A true CN112157450A (en) | 2021-01-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011028830.7A Pending CN112157450A (en) | 2020-09-27 | 2020-09-27 | Clamping device suitable for machining of cast valve body |
Country Status (1)
| Country | Link |
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| CN (1) | CN112157450A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114029769A (en) * | 2021-12-13 | 2022-02-11 | 徐州阿马凯液压技术有限公司 | High-pressure, high-rigidity and multi-station hydraulic clamp |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012086336A (en) * | 2010-10-22 | 2012-05-10 | Honda Motor Co Ltd | Clamp device, and pallet device |
| CN203236260U (en) * | 2013-05-07 | 2013-10-16 | 浙江海宏液压科技股份有限公司 | Hydraulic valve body machining clamp |
| CN105729169A (en) * | 2014-12-09 | 2016-07-06 | 安徽池州家用机床股份有限公司 | Saddle boring and milling clamp |
| CN106217289A (en) * | 2016-07-29 | 2016-12-14 | 湖南吉盛国际动力传动***有限公司 | A kind of fixture of vehicle gearbox valve body |
| CN207139341U (en) * | 2017-09-04 | 2018-03-27 | 圣邦集团有限公司 | A kind of hydraulic valve fixture and machine table |
| CN207289523U (en) * | 2017-09-22 | 2018-05-01 | 大连盛通阀门制造有限公司 | A kind of valve flange processes self-centering clamping tooling |
| CN207788355U (en) * | 2017-11-27 | 2018-08-31 | 重庆坦承精密机械有限公司 | A kind of automobile valve body processing detent mechanism |
| CN209998412U (en) * | 2019-06-21 | 2020-01-31 | 临沂临工重托机械有限公司 | Boring clamp for front frame of loader |
-
2020
- 2020-09-27 CN CN202011028830.7A patent/CN112157450A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012086336A (en) * | 2010-10-22 | 2012-05-10 | Honda Motor Co Ltd | Clamp device, and pallet device |
| CN203236260U (en) * | 2013-05-07 | 2013-10-16 | 浙江海宏液压科技股份有限公司 | Hydraulic valve body machining clamp |
| CN105729169A (en) * | 2014-12-09 | 2016-07-06 | 安徽池州家用机床股份有限公司 | Saddle boring and milling clamp |
| CN106217289A (en) * | 2016-07-29 | 2016-12-14 | 湖南吉盛国际动力传动***有限公司 | A kind of fixture of vehicle gearbox valve body |
| CN207139341U (en) * | 2017-09-04 | 2018-03-27 | 圣邦集团有限公司 | A kind of hydraulic valve fixture and machine table |
| CN207289523U (en) * | 2017-09-22 | 2018-05-01 | 大连盛通阀门制造有限公司 | A kind of valve flange processes self-centering clamping tooling |
| CN207788355U (en) * | 2017-11-27 | 2018-08-31 | 重庆坦承精密机械有限公司 | A kind of automobile valve body processing detent mechanism |
| CN209998412U (en) * | 2019-06-21 | 2020-01-31 | 临沂临工重托机械有限公司 | Boring clamp for front frame of loader |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114029769A (en) * | 2021-12-13 | 2022-02-11 | 徐州阿马凯液压技术有限公司 | High-pressure, high-rigidity and multi-station hydraulic clamp |
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Application publication date: 20210101 |
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| RJ01 | Rejection of invention patent application after publication |