CN113020912A - Machining method of U-shaped bottom plate of sliding rail - Google Patents
Machining method of U-shaped bottom plate of sliding rail Download PDFInfo
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- CN113020912A CN113020912A CN202110282721.6A CN202110282721A CN113020912A CN 113020912 A CN113020912 A CN 113020912A CN 202110282721 A CN202110282721 A CN 202110282721A CN 113020912 A CN113020912 A CN 113020912A
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- 238000003754 machining Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000009434 installation Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000003672 processing method Methods 0.000 claims abstract description 5
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000010079 rubber tapping Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The invention relates to the technical field of processing of large-size metal workpieces, and particularly discloses a method for processing a U-shaped bottom plate of a sliding rail, which comprises the following steps: processing the appearance: roughly processing the thickness of the blank material, roughly processing and finely processing the length and width directions of the blank material, and reserving processing allowance in the roughly processing thickness direction; rough machining of an inner cavity: and (5) processing guide rail installation steps, and reserving processing allowance. During rough machining, certain allowance is reserved in the thickness direction and the guide rail installation step, and after secondary clamping, finish machining is respectively carried out on the inner cavity and the thickness, so that large deformation of a workpiece is avoided; the method is characterized in that blackening treatment is firstly carried out before fine machining is carried out on the guide rail mounting step and the inner span, allowance is still left in the guide rail mounting step part in the inner cavity of the workpiece during blackening treatment, and fine machining is carried out after blackening is finished, so that secondary deformation of the workpiece in the blackening process can be prevented. After the processing method is adopted, the deformation of the workpiece is relatively small, stress subsequent heat treatment is not needed, and the processing steps are reduced.
Description
Technical Field
The invention relates to the technical field of processing of large-size metal workpieces, in particular to a method for processing a U-shaped bottom plate of a sliding rail.
Background
A sliding rail U-shaped bottom plate is a workpiece for installing a guide rail, a bottom plate blank is a whole piece, in the past, due to the fact that the thickness of the workpiece blank is too large, after the inner cavity size of 12mm, 14mm and other sizes are machined at one time, stress release influences that the deformation of the workpiece is too large, the deformation of the bottom plate is too large, the size error of the guide rail occurs in the installation process, the installation is difficult, the precision does not reach the standard, and the use requirement of a customer cannot be met. A large amount of allowance is needed to be processed in the inner cavity determined by the shape of the product, after the machining is completed once, the deformation of a workpiece is large, the use requirement cannot be met, the product cannot be repaired due to the absence of the allowance, and the sliding rail U-shaped bottom plate and the sliding plate cannot be installed and matched, so that new challenges are brought to the machining.
Disclosure of Invention
The invention aims to provide a method for processing a U-shaped bottom plate of a sliding rail, which solves the problem of stress deformation of a workpiece.
The invention is realized by the following technical scheme:
a processing method of a U-shaped bottom plate of a slide rail comprises the following steps:
processing the appearance: roughly processing the thickness of the blank material, roughly processing and finely processing the length and width directions of the blank material, and reserving processing allowance in the roughly processing thickness direction;
rough machining of an inner cavity: processing a guide rail installation step, and reserving a processing allowance;
before the fine machining of the installation steps and the inner span of the guide rail, blackening treatment is carried out.
Further, the machining allowance is 1-2 mm.
Furthermore, after the rough machining of the inner cavity is finished, the workpiece is placed in a turned-over horizontal mode, and two sets of super vice assemblies are used for clamping the inner cavity in the length direction.
Further, after the rough machining of the inner cavity is finished, each hole on the workpiece and the bottom surface of the workpiece are machined in sequence.
Furthermore, the planeness of the bottom surface of the U-shaped bottom plate of the slide rail is less than or equal to 0.05 mm.
Further, after the steps and the inner span are installed on the finish machining guide rail, burrs on the surface of the workpiece are removed.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention discloses a method for processing a U-shaped bottom plate of a sliding rail, wherein a certain margin is reserved in the thickness direction and a guide rail mounting step during rough processing, and an inner cavity and the thickness are respectively subjected to finish processing after secondary clamping, so that the large deformation of a workpiece is avoided; the method is characterized in that blackening treatment is firstly carried out before fine machining is carried out on the guide rail mounting step and the inner span, allowance is still left in the guide rail mounting step part in the inner cavity of the workpiece during blackening treatment, and fine machining is carried out after blackening is finished, so that secondary deformation of the workpiece in the blackening process can be prevented. After the machining method is improved, the deformation of the workpiece is relatively small, the size meets the design requirement, the guide rail is easy to install, and the construction requirement is met. Stress subsequent treatment or heat treatment is not needed, so that the processing steps are reduced, the processing time is saved, and the production cost is reduced.
Drawings
FIG. 1 is a flow chart of a method for processing a U-shaped bottom plate of a slide rail according to the present invention;
FIG. 2 is a fixed assembly drawing of a U-shaped bottom plate of a slide rail when steps and an inner span are installed on a finish machining guide rail;
FIG. 3 is a schematic top view of the U-shaped bottom plate of the slide rail;
fig. 4 is a schematic front dimension structure diagram of the slide rail U-shaped bottom plate.
Wherein, 1 is slide rail U type bottom plate, 2 are the clamp plate subassembly.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
As shown in fig. 1, the invention discloses a method for processing a U-shaped bottom plate of a slide rail, which comprises the following steps:
processing the appearance: roughly processing the thickness of the blank material, roughly processing the length and width directions of the blank material and statically processing the blank material, and reserving processing allowance in the roughly processing thickness direction;
rough machining of an inner cavity: processing a guide rail installation step, and reserving a processing allowance;
before the fine machining of the installation steps and the inner span of the guide rail, blackening treatment is carried out.
When the appearance thickness is processed, a machining allowance of 1-2 mm is reserved, a allowance of 1-2 mm is reserved for the size of a guide rail mounting step of the inner cavity, and the machining allowance mainly aims at the problem of workpiece deformation after the allowance of the inner cavity of the metal workpiece is removed.
Taking the U-shaped bottom plate of the slide rail shown in fig. 3 and 4 as an example, the length L is 500mm, the L1 is 422mm, the L2 is 384mm, the width S is 450mm, the thickness H is 30mm, the H1 is 14mm, the H2 is 12mm, the size of the middle rectangular hole is 200mm × 250mm, and the width of the rail mounting step is 19 mm. The specific method for processing and modifying the parts comprises the following steps:
1. blanking: a3 board is adopted, the thickness dimension is 35mm, the length and the width of each dimension are single, the allowance is 5mm, namely the length is 505mm, and the width is 455 mm.
2. Processing the appearance: clamping the plate by using a vice, and processing the plate to 31mm (with two visible sides) by using a fly cutter with a plane of phi 50 mm;
clamping a workpiece by adopting a pressing plate, aligning the workpiece by using a hundredth table, setting a workpiece coordinate system by using a straightening line, and performing rough machining and finish machining on the workpiece in the length and width directions by using a phi 40mm corrugated end mill and a phi 32mm straight-edge end mill respectively until the workpiece reaches the required size of the workpiece; and then, performing rough machining and finish machining on the inner rectangular hole until the required size of the part is achieved.
3. Rough machining of an inner cavity: clamping a workpiece by using a pressing plate, aligning the workpiece, setting a z-direction zero point of a workpiece coordinate system and an xy-direction zero point as the center of the workpiece by taking the lower surface (determined as an A surface) of the workpiece as a reference surface, roughly machining the inner cavity by using a phi 40mm corrugated end mill, wherein the sizes of the inner cavity are respectively that the single-side allowance of the L1 size is 1mm, namely, the machining is carried out to 420mm, the L2 size meets the requirement of a diagram, the size of the H1 guide rail step is machined to 16mm, and the size of the H2 is machined to 13mm (namely, 1mm allowance is reserved on the.
4. And (4) processing each hole on the workpiece.
5. Deburring and tapping: the method comprises the following steps of detaching a workpiece, removing burrs on the surface of the workpiece, fixing the workpiece by using a radial drilling machine, clamping a screw tap, and machining each screw hole of the workpiece.
6. Processing the surface A: the workpiece A faces upwards, the U-shaped bottom plate of the sliding rail is placed in a turned-over horizontal mode, two sets of super vice assemblies are used for stably extruding the length direction of an inner cavity, the workpiece is clamped, phi 50mm plane fly cutters are used for respectively conducting rough machining and finish machining on the surface A until the thickness of the workpiece is 30mm, and the flatness of the surface A is not more than 0.05mm and meets the requirement. If the step is placed before tapping, the workpiece is extruded in the tapping process, so that secondary deformation is caused to the workpiece, and the deca-A surface is warped and cannot be attached to the working table.
7. Surface blackening: the workpiece is blackened, the guide rail in the inner cavity of the workpiece has allowance at the step part, and the workpiece is finely processed after the blackening is finished, so that the secondary deformation of the workpiece in the blackening process can be prevented.
8. Finish machining guide rail installation step and interior span, interior span indicates the L1 size of attached: a workpiece A surface is attached to a workbench of a machine tool, a workpiece is aligned, as shown in figure 2, a 4-set pressure plate assembly 2 is used for clamping the workpiece, a workpiece coordinate system is set, the A surface, namely the workbench surface, is set as a zero point in the z direction, and the zero point in the xy direction is set as a workpiece center point. And programming, namely machining the installation steps and the inner span part of the guide rail of the workpiece by using a phi 32mm straight edge end mill.
9. Finally, removing burrs on the surface of the workpiece, finishing the processing of the workpiece and obtaining the finally formed U-shaped bottom plate 1 of the sliding rail.
Under the processing method, the clamping mode and the process conditions of the invention, a plurality of U-shaped bottom plates are processed together, the size and form and position tolerance meet the requirements of a drawing, the U-shaped bottom plates are stably installed in cooperation with the sliding plate, the phenomenon of over-repair does not occur, and the use requirements of products can be met.
The machining method is matched with the two sets of combined fixtures to machine the U-shaped bottom plate of the sliding rail, the blank is reliably clamped and comprises a rough machining process and a finish machining process, the machined large bottom plate is good in size consistency, the machining method is matched with the corresponding combined fixtures to meet the installation and use requirements of workpieces, and the machining effect is expected.
Claims (6)
1. A processing method of a U-shaped bottom plate of a slide rail is characterized by comprising the following steps:
processing the appearance: roughly processing the thickness of the blank material, roughly processing and finely processing the length and width directions of the blank material, and reserving processing allowance in the roughly processing thickness direction;
rough machining of an inner cavity: processing a guide rail installation step, and reserving a processing allowance;
before the fine machining of the installation steps and the inner span of the guide rail, blackening treatment is carried out.
2. The machining method of the U-shaped bottom plate of the slide rail according to claim 1, wherein the machining allowance is 1-2 mm.
3. The machining method of the U-shaped bottom plate of the sliding rail according to claim 1, wherein after rough machining of the inner cavity is completed, the workpiece is placed in a turned-over horizontal mode, and two sets of super vice assemblies are used for clamping the inner cavity in the length direction.
4. The method for machining the U-shaped bottom plate of the sliding rail according to claim 1, wherein after the rough machining of the inner cavity is completed, each hole in the workpiece and the bottom surface of the workpiece are machined in sequence.
5. The processing method of the U-shaped bottom plate of the slide rail as claimed in claim 1, wherein the flatness of the bottom surface of the U-shaped bottom plate of the slide rail is less than or equal to 0.05 mm.
6. The method for machining the U-shaped bottom plate of the slide rail according to claim 1, wherein burrs on the surface of a workpiece are removed after finishing the installation steps and the inner span of the guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110282721.6A CN113020912A (en) | 2021-03-16 | 2021-03-16 | Machining method of U-shaped bottom plate of sliding rail |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110282721.6A CN113020912A (en) | 2021-03-16 | 2021-03-16 | Machining method of U-shaped bottom plate of sliding rail |
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| CN113020912A true CN113020912A (en) | 2021-06-25 |
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| CN202110282721.6A Pending CN113020912A (en) | 2021-03-16 | 2021-03-16 | Machining method of U-shaped bottom plate of sliding rail |
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|---|---|---|---|---|
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| CN108213868A (en) * | 2017-12-29 | 2018-06-29 | 南京熊猫电子股份有限公司 | A kind of technique of Cutter Body Processing with Machining Center metal foil wall pieces |
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2021
- 2021-03-16 CN CN202110282721.6A patent/CN113020912A/en active Pending
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Application publication date: 20210625 |