CN111015299A - Machining method of mechanical part and combined clamp - Google Patents

Machining method of mechanical part and combined clamp Download PDF

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Publication number
CN111015299A
CN111015299A CN201911393538.2A CN201911393538A CN111015299A CN 111015299 A CN111015299 A CN 111015299A CN 201911393538 A CN201911393538 A CN 201911393538A CN 111015299 A CN111015299 A CN 111015299A
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CN
China
Prior art keywords
clamp
machining
positioning
wedge
parts
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
Application number
CN201911393538.2A
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Chinese (zh)
Inventor
赵斌杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Mitsubishi Elevator Co Ltd
Original Assignee
Shanghai Mitsubishi Elevator Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Mitsubishi Elevator Co Ltd filed Critical Shanghai Mitsubishi Elevator Co Ltd
Priority to CN201911393538.2A priority Critical patent/CN111015299A/en
Publication of CN111015299A publication Critical patent/CN111015299A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, 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
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02Devices 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
    • B23Q3/06Work-clamping means

Abstract

The invention provides a machining method of a mechanical part, which comprises the following steps: step S1, selecting a first reference surface according to the structural characteristics of the parts, and processing the first reference surfaces of the parts by a first processing device corresponding to a plurality of parts through a first tool clamp; step S2, processing the rest surfaces and/or grooves of the plurality of parts by corresponding second processing equipment through a second tool clamp by taking the processed first reference surface as a reference; and step S3, selecting any one of the machined surfaces, fixing the plurality of parts on the combined clamp, and machining the holes and/or other parts on the plurality of parts by corresponding machining equipment. The invention can realize the simultaneous clamping and processing of a plurality of parts.

Description

Machining method of mechanical part and combined clamp
Technical Field
The invention mainly relates to the field of machining, in particular to a machining method of a mechanical part and a combined clamp. The invention also relates to a method for processing the braking arm of the escalator driving main machine and the wedge block of the elevator emergency braking device and a combined clamp.
Background
The design of mechanical parts is diversified, and different special clamps need to be designed and manufactured aiming at different parts during machining. The use of prior art modular fixtures allows the use of standard fixture parts which are reused to reduce the variety and number of fixtures. In the published documents relating to the design of the jigs, the efficiency of the design of the jigs is improved, for example, CN108994505A and CN109446542A, or the design is assisted by a computer, for example, CN 1232382C.
The improvement of the design efficiency of the clamp is usually worth a large amount of parts needing to be machined or a large value of the clamp in a trial-manufacture stage before the design and the shaping of the parts. However, for parts requiring large-scale machining, the improvement of the machining efficiency can effectively reduce the machining cost of the parts, which is the core of attention of manufacturing enterprises. When the part is machined, the machining efficiency is directly influenced by the clamping frequency of the part on the clamp, and the machining efficiency is also directly influenced by the quantity of the parts which can be machined by the clamping rear machine tool.
This is particularly true for complex parts, for example, some parts have complex shapes and require many surfaces and holes to be machined with high precision, and although many machine tools can realize multi-axis machining at present and can realize machining of multiple surfaces on one machine tool, the existing machining and clamp design concept still needs to be clamped for many times, and simultaneous clamping and machining of multiple parts cannot be realized.
There is no universal fixture design method in the prior publications, which guides the craftsman to design the fixture and select the machining strategy from the aim of improving the machining efficiency of the parts.
Disclosure of Invention
The invention aims to solve the technical problem of how to design a clamp and select a machining strategy from the aim of improving the machining efficiency of parts.
In order to solve the technical problems, the invention provides a mechanical part machining method and a combined clamp, which are characterized in that a complex machining procedure is completed on a plurality of machining devices in steps, so that the machining procedure of each device is simple, the method is suitable for continuous machining of a plurality of workpieces, each step can realize continuous machining by clamping the plurality of workpieces once, and the use efficiency of the machining devices is greatly improved.
The machining method of the mechanical part comprises the following steps:
step S1, selecting a first reference surface according to the structural characteristics of the parts, and processing the first reference surfaces of the parts by a first processing device corresponding to a plurality of parts through a first tool clamp;
step S2, processing the rest surfaces and/or grooves of the plurality of parts by corresponding second processing equipment through a second tool clamp by taking the processed first reference surface as a reference;
and step S3, selecting any one of the machined surfaces, fixing the plurality of parts on the combined clamp, and machining the holes and/or other parts on the plurality of parts by corresponding machining equipment.
Preferably, the remaining surfaces in step S2 are parallel or perpendicular to the first reference surface.
The invention also discloses a processing method of the brake arm of the escalator driving host, which comprises the following steps:
step S101, selecting a first side surface of a brake arm as a first reference surface, and finishing the processing of the first reference surfaces of the plurality of brake arms through a first tool clamp in a milling, planing or precision casting mode;
step S102, with the first reference surface of the brake arm after machining as a reference, machining second side surfaces, third side surfaces, fourth side surfaces and/or grooves of the brake arms through a second tool clamp in a milling, planing or other mode;
and step S103, selecting the machined first side surface, second side surface or third side surface as a reference, fixedly mounting the plurality of brake arms on a third tool clamp, and machining holes in the plurality of brake arms through corresponding hole machining equipment.
Preferably, in step S103, the corresponding processing device is a multi-hole processing device.
Preferably, the respective machining apparatus is a five-axis machine tool.
The invention also discloses a clamp module in the method for processing the brake arm of the escalator driving host, which comprises the following steps:
the base part is used for supporting the clamp of the brake arm of the escalator driving main machine;
the positioning piece is fixedly connected to the base piece, and is tightly attached to one side or an end point of the braking arm of the escalator driving host machine to limit the moving space of the positioning piece;
and the fastener is used for pressing the braking arm of the escalator driving host machine on the base part and/or the positioning block, and limiting the three-dimensional space of the braking arm by clamping any machined reference surface of the braking arm of the escalator driving host machine so as to continuously machine the hole in the braking arm by a subsequent tool.
Preferably, it comprises:
a base member for supporting the fixture for processing the brake arm of the escalator drive main unit;
four first positioning blocks fixedly connected to the base member in pairs facing each other;
one or two second positioning blocks fixedly connected to the base part, wherein the second positioning blocks are tightly attached to the end points of the brake arms of the escalator drive host machine for limiting free movement spaces of the second positioning blocks;
the four first clamping pieces are respectively fastened on the side surfaces of the four first positioning blocks, and the inner vertical surfaces of the four first positioning blocks respectively clamp the machined reference surfaces of the brake arm through the four first clamping pieces;
and the two second clamping pieces are fixedly connected with the screw of the base piece to clamp the brake arm of the driving main machine of the processing escalator.
The invention also discloses a clamp combination using the clamp modules, which comprises at least two clamp modules, wherein the second positioning block of each clamp module is fixed on a base, and the base parts of the clamp modules are fixedly connected in a detachable meshing or embedding manner.
Preferably, the detachable snap-fit or snap-fit fixed connection is mutually snap-fit fixed by means of a dovetail groove or an inverted T-shaped groove.
Preferably, the clamp assembly consists of four clamp modules.
The invention also discloses a processing method of the wedge block of the elevator emergency braking device, which comprises the following steps:
step S201, selecting a first side surface of a wedge block as a first reference surface, and finishing the machining of the first reference surfaces of the wedge blocks through a first tool clamp in a milling, planing or precision casting mode;
step S202, with the first reference surface of the machined wedge block as a reference, machining a second side surface, a third side surface, a fourth side surface, a fifth side surface and/or grooves of the wedge blocks through a second tool clamp in a milling, planing or other mode;
and S203, selecting the first side surface or the second side surface or the third side surface of the machined wedge block as a reference, fixedly installing the wedge blocks on a third tool clamp, and machining holes and/or inclined surfaces of the wedge blocks through corresponding hole machining equipment.
The invention also discloses a clamp module in the method for processing the wedge block of the elevator emergency braking device, which comprises the following steps:
a base member for supporting the elevator emergency brake wedge;
the positioning piece is fixedly connected to the base piece, and the positioning piece is tightly attached to one side or an end point of the wedge block to limit the moving space of the wedge block;
the fastener compresses the wedge block on the base piece and/or the positioning block through the clamping plate through the threaded bolt, and the three-dimensional space of the wedge block is limited through clamping a certain machined reference surface of the wedge block, so that the holes in the wedge blocks are continuously machined.
The invention also discloses a clamp module, comprising:
a base member having a plurality of positioning grooves;
the wedge block is fixedly connected with the first positioning block and then positioned by the positioning groove;
the second positioning block is tightly attached to one end face of the wedge block and used for limiting the free movement space of the wedge block;
and the fastener is used for pressing the wedge block on the base piece and/or the positioning block through the clamping plate by the threaded bolt.
The invention also discloses a fixture combination of the practical fixture modules, which comprises at least two fixture modules, wherein the basic parts of the modules are fixed on a base and fixedly connected.
Preferably, the clamp assembly is formed by combining four clamp modules.
In conclusion, when the machined parts reach a certain number of scales, the machining time and the machining cost of a single part can be greatly reduced by adopting the machining method provided by the invention.
Drawings
FIGS. 1A-1B are schematic views of a brake arm according to a preferred embodiment of the method for machining a mechanical part of the present invention.
FIGS. 2A-2B are schematic diagrams of wedges in a preferred embodiment of the method for machining a mechanical part according to the present invention.
Fig. 3 is a schematic view of a clamp module in the processing method for realizing the braking arm of the escalator driving main machine.
Fig. 4 is a schematic view of a clamp assembly in the processing method for realizing the braking arm of the escalator driving main machine.
Fig. 5 is a schematic view of a clamp module in the method for processing a wedge block of an elevator emergency braking device.
Description of the reference numerals
00 brake arm A brake arm first side
Second side of brake arm B and third side of brake arm C
D fourth side of brake arm E brake arm groove
01 wedge A1 wedge first side
B1 second side of wedge C1 third side of wedge
D1 chock fourth side E1 chock fifth side
F wedge hole G wedge groove
10 base part of brake arm 11 positioning part of brake arm
12 clamp of brake arm 13 fastener of brake arm
111 first positioning block of brake arm 112 second positioning block of brake arm
20 wedge base member 21 wedge retainer
22-wedge clamping piece 23-wedge fastening piece
211 first positioning block 212 second positioning block
Detailed Description
The following describes a preferred embodiment of the present invention in detail with reference to the accompanying drawings. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or modify equivalent embodiments, without affecting the spirit of the invention, using the methods and techniques disclosed above, without departing from the scope of the invention.
Example one
The invention discloses a machining method of a mechanical part, which comprises the following steps:
and step S1, selecting a first reference surface according to the structural characteristics of the parts, and processing the first reference surfaces of the parts by the corresponding first processing equipment through the first tool clamp.
And step S2, processing the rest surfaces and/or grooves of the plurality of parts by corresponding second processing equipment through a second tool clamp by taking the processed first reference surface as a reference.
The remaining faces in this step are preferably parallel or perpendicular to the first reference plane.
And step S3, selecting any one of the machined surfaces, fixing the plurality of parts on the combined clamp, and machining the holes and/or other parts on the plurality of parts by corresponding machining equipment.
In the first step, only one surface is processed, so that economical processing equipment can be adopted, and parts with extremely large quantity can be processed at the same time. In the second step, only a few surfaces or grooves parallel or perpendicular to the reference surface are processed, so that economical processing equipment can be adopted, and a large number of parts can be processed at the same time. In the third step, only various holes or inclined planes with precision requirements are machined, and when machining equipment such as a multi-axis machining center and the like is adopted, a plurality of parts can be machined simultaneously, so that the use efficiency of the machining equipment can be greatly improved. Therefore, in a comprehensive way, after the machined parts reach a certain number of scales, the machining time and the machining cost of a single part can be greatly reduced by adopting the machining method provided by the invention.
Example two
Fig. 1A-1B are brake arms of an escalator drive machine. The first side surface A of the brake arm is a first design reference surface, and the rest surfaces of the brake arm comprise a second side surface B of the brake arm, a third side surface C of the brake arm, a fourth side surface D of the brake arm and a groove E of the brake arm, wherein the first side surface A of the brake arm is used as a reference. The processing method for processing the brake arm part comprises the following steps:
the first step is as follows:
the plurality of brake arm blanks are fixedly clamped to a first tooling and the plurality of brake arm first sides a are continuously machined by a first machining apparatus, such as a milling machine, until all machining is complete. The first side a of the brake arm may also be formed by precision casting by a first machining apparatus, such as a precision casting apparatus.
The second step is that:
and the plurality of brake arms are respectively fixedly clamped on a second tool by taking the first side surface A of the brake arm as a first process reference surface, and the second side surface B, the third side surface C, the fourth side surface D and the groove E of the plurality of brake arms are continuously machined by a second machining device, such as a milling machine, by taking the first side surface A of the brake arm as a reference until all the machining is finished.
The third step
The plurality of brake arms are fixedly clamped on a third tool by taking the machined surfaces as references respectively, the first side surface A of each brake arm, the third side surface C of each brake arm or the second side surface B of each brake arm as references, and each hole, such as a cylindrical hole, a threaded hole, a waist-shaped hole and the like, of each brake arm is continuously machined by a third machining device, such as a five-axis machine tool, until all the holes are machined.
The third tooling may be a fixture module or a fixture combination as in embodiment four or embodiment five.
EXAMPLE III
Fig. 2A-2B show a wedge for an elevator emergency brake. Wherein wedge first side A1 is the first design reference plane and the remaining surfaces, including wedge second side B1, wedge third side C1, wedge fourth side D1, wedge fifth side E1 and groove G1, are all referenced from wedge first side A1. The processing method for processing the wedge block comprises the following steps:
the first step is as follows:
the plurality of wedge blank holding clamps are attached to a first tool and a first machining apparatus, such as a milling machine, is used to continuously machine the plurality of wedge first sides a1 until all machining is complete. The wedge first side a1 may also be formed by precision casting using a first machining apparatus, such as a precision casting apparatus.
The second step is that:
the plurality of wedges are respectively fixed and clamped on a second tool by taking the wedge first side surface A1 as a first process reference surface, and the plurality of wedge second side surfaces B1, the wedge third side surface C1, the wedge fourth side surface D1 and the groove G are continuously machined by a second machining device, such as a milling machine, by taking the wedge first side surface A1 as a reference until all machining is finished.
The third step:
the plurality of wedge blocks are respectively fixed and clamped on the third tool by taking the first side surface A1 of the wedge block as a reference, or the plurality of wedge block holes F and the inclined surfaces E can be continuously machined by a third machining device, such as a machining center, by taking the machined third side surface C1 or the machined second side surface B1 of the wedge block as a reference until the whole machining is finished.
The third tooling may be the fixture of embodiment six.
Example four
As shown in fig. 3, a jig module for manufacturing a brake arm 00 includes a base member 10, a plurality of positioning members 11, a plurality of clamping members 12, and a plurality of fastening members 13.
The base member is a flat plate member with a dovetail groove or an inverted T-groove (the groove is not shown in the drawings).
The positioning member 11 includes four first positioning blocks 111, and each two first positioning blocks position the brake arm with its C-face, limiting the degrees of freedom in the Y and Z directions, while the first positioning blocks support the brake arm. When in positioning, the four first positioning blocks are fastened with the base part. The positioning surface has various options, and the surface without holes to be processed can be selected, or the holes to be processed are not shielded, and the braking arm of the embodiment is positioned by the C surface.
The positioning member 11 further includes a second positioning block 112 for positioning the two brake arms simultaneously to limit the degree of freedom in the Z direction. Or may be divided into two second positioning blocks 112, and each second positioning block 112 positions one brake arm. When in positioning, the second positioning block 112 is fastened on the surface or the side surface of the base member.
The clamping member 12 includes four first clamping members 121 fastened to the sides of the four first positioning blocks, respectively, for fixing the brake arms in the Y direction.
The clamping member 12 further comprises two second clamping members 122 for securing the brake arms in the Z-direction by means of screws connected to the base member.
EXAMPLE five
As shown in fig. 4, a combined fixture for implementing a method for processing a brake arm of an escalator driving machine includes four fixture modules according to the fourth embodiment, wherein the second positioning block 112 of each fixture module is fixed on a base, and the base members of each fixture module are fixedly connected by detachably engaging or engaging.
The second positioning block 112 of each module is seated or embedded and fixed on a base, and the base parts of each module are detachably engaged or embedded and fixed in connection.
EXAMPLE six
As shown in fig. 5, a combination jig for machining a wedge includes a base member 20, a plurality of positioning members 21, a plurality of clamping members 22, and a plurality of fastening members 23.
There are many implementations of the base member 20, and the present embodiment is a square column structure, as shown in fig. 5, a plurality of positioning slots are formed on the bottom plate for positioning the first positioning block.
The positioning member 21 includes a first positioning block 211, and the wedge is fixedly connected to the first positioning block and then positioned by the positioning slot.
The positioning member 21 further includes a second positioning block 212 fixed on the base member for blocking the wedge from moving toward the second positioning block.
A plurality of clamping members 22 clamp the wedge by means of fasteners clamping the first locating block.
The above are merely preferred embodiments of the present invention, and are not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (13)

1. The machining method of the mechanical part is characterized by comprising the following steps of:
step S1, selecting a first reference surface according to the structural characteristics of the parts, and processing the first reference surfaces of the parts by a first processing device corresponding to a plurality of parts through a first tool clamp;
step S2, processing the rest surfaces and/or grooves of the plurality of parts by corresponding second processing equipment through a second tool clamp by taking the processed first reference surface as a reference;
and step S3, selecting any one of the machined surfaces, fixing the plurality of parts on the combined clamp, and machining the holes and/or other parts on the plurality of parts by corresponding machining equipment.
2. The method of machining a machine part according to claim 1,
the remaining surfaces in step S2 are parallel or perpendicular to the first reference surface.
3. The processing method of the braking arm of the escalator driving main machine is characterized by comprising the following steps of:
step S101, selecting a first side surface of a brake arm as a first reference surface, and finishing the processing of the first reference surfaces of the plurality of brake arms through a first tool clamp in a milling, planing or precision casting mode;
step S102, with the first reference surface of the brake arm after machining as a reference, machining second side surfaces, third side surfaces, fourth side surfaces and/or grooves of the brake arms through a second tool clamp in a milling, planing or other mode;
and step S103, selecting the machined first side surface, second side surface or third side surface as a reference, fixedly mounting the plurality of brake arms on a third tool clamp, and machining holes in the plurality of brake arms through corresponding hole machining equipment.
4. A method of manufacturing an escalator drive machine brake arm according to claim 3,
in step S103, the corresponding processing device is a multi-hole processing device.
5. A method of manufacturing an escalator drive machine brake arm according to claim 4, wherein the corresponding manufacturing equipment is a five-axis machine tool.
6. The clamp module for realizing the processing method of the braking arm of the escalator drive main unit according to claim 3, is characterized by comprising the following steps:
the base part is used for supporting the clamp of the brake arm of the escalator driving main machine;
the positioning piece is fixedly connected to the base piece, and is tightly attached to one side or an end point of the braking arm of the escalator driving host machine to limit the moving space of the positioning piece;
and the fastener is used for pressing the braking arm of the escalator driving host machine on the base part and/or the positioning block, and limiting the three-dimensional space of the braking arm by clamping any machined reference surface of the braking arm of the escalator driving host machine so as to continuously machine the hole in the braking arm by a subsequent tool.
7. The clamp module for realizing the processing method of the brake arm of the escalator drive main unit according to claim 6, comprising:
a base member for supporting the fixture for processing the brake arm of the escalator drive main unit;
four first positioning blocks fixedly connected to the base member in pairs facing each other;
one or two second positioning blocks fixedly connected to the base part, wherein the second positioning blocks are tightly attached to the end points of the brake arms of the escalator drive host machine for limiting free movement spaces of the second positioning blocks;
the four first clamping pieces are respectively fastened on the side surfaces of the four first positioning blocks, and the inner vertical surfaces of the four first positioning blocks respectively clamp the machined reference surfaces of the brake arm through the four first clamping pieces;
and the two second clamping pieces are fixedly connected with the screw of the base piece to clamp the brake arm of the driving main machine of the processing escalator.
8. A clamp assembly using the clamp module of claim 7, wherein: the clamp assembly comprises at least two clamp modules, wherein the second positioning block of each clamp module is fixed on a base, and the base parts of the clamp modules are detachably connected in a snap-in or embedded mode.
9. The clamp assembly of claim 8, wherein: the detachable engagement or engagement fixed connection is mutually engaged and fixed in a dovetail groove or an inverted T-shaped groove mode.
10. The clamp assembly of claim 8, wherein: the clamp assembly is composed of four clamp modules.
11. The processing method of the wedge block of the elevator emergency braking device is characterized by comprising the following steps:
step S201, selecting a first side surface of a wedge block as a first reference surface, and finishing the machining of the first reference surfaces of the wedge blocks through a first tool clamp in a milling, planing or precision casting mode;
step S202, with the first reference surface of the machined wedge block as a reference, machining a second side surface, a third side surface, a fourth side surface, a fifth side surface and/or grooves of the wedge blocks through a second tool clamp in a milling, planing or other mode;
and S203, selecting the first side surface or the second side surface or the third side surface of the machined wedge block as a reference, fixedly installing the wedge blocks on a third tool clamp, and machining holes and/or inclined surfaces of the wedge blocks through corresponding hole machining equipment.
12. The clamp module for implementing the method for processing the wedge block of the emergency braking device of the elevator according to claim 11, comprising:
a base member for supporting the elevator emergency brake wedge;
the positioning piece is fixedly connected to the base piece, and the positioning piece is tightly attached to one side or an end point of the wedge block to limit the moving space of the wedge block;
the fastener compresses the wedge block on the base piece and/or the positioning block through the clamping plate through the threaded bolt, and the three-dimensional space of the wedge block is limited through clamping a certain machined reference surface of the wedge block, so that the holes in the wedge blocks are continuously machined.
13. The gripper module of claim 11, comprising:
the base piece is of a square upright column structure, and a plurality of positioning grooves are formed in four panels of the base piece respectively;
the first positioning blocks are positioned through positioning grooves;
the second positioning blocks are tightly attached to one end face of the wedge block and used for limiting free movement space of the wedge block;
and the wedge blocks are pressed on the base piece and/or the positioning piece through the clamping plates by the threaded bolts.
CN201911393538.2A 2019-12-30 2019-12-30 Machining method of mechanical part and combined clamp Pending CN111015299A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911393538.2A CN111015299A (en) 2019-12-30 2019-12-30 Machining method of mechanical part and combined clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911393538.2A CN111015299A (en) 2019-12-30 2019-12-30 Machining method of mechanical part and combined clamp

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Publication Number Publication Date
CN111015299A true CN111015299A (en) 2020-04-17

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Publication number Priority date Publication date Assignee Title
CN112108899A (en) * 2020-09-18 2020-12-22 河北恒工精密装备股份有限公司 Special clamp suitable for machining L-shaped valve body and machining method

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CN209699686U (en) * 2019-03-18 2019-11-29 桂林兴百利机械制造有限责任公司 A kind of machining center mobile phone shell milling mouth of a river jig

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KR20070038593A (en) * 2005-10-06 2007-04-11 한국항공우주산업 주식회사 Clamping device for milling
US20120216402A1 (en) * 2011-02-28 2012-08-30 General Electric Company Repair alignment method and apparatus for turbine components
CN102672443A (en) * 2012-04-28 2012-09-19 苏州雅尔塑业科技有限公司 Process for machining molding core
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Publication number Priority date Publication date Assignee Title
CN112108899A (en) * 2020-09-18 2020-12-22 河北恒工精密装备股份有限公司 Special clamp suitable for machining L-shaped valve body and machining method

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