CN109434395B - Method for processing high-precision deep long hole thin-wall sleeve type part - Google Patents
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Abstract
The method for processing the high-precision deep-long hole thin-wall sleeve part comprises the following steps: clamping a bar stock, performing rough machining and forming, reserving machining allowance and reserving a process chuck; carrying out heat treatment aging on the rough-machined workpiece; the workpiece is clamped by a lathe to finish machining in one clamping according to a workpiece drawing, and the finish machining comprises the following steps: manufacturing a mandrel, a bush and a screw; clamping the process chuck on a lathe, inserting a mandrel into the roughly machined inner hole of the workpiece, and machining the excircle of the part to a required size; screwing the screw into the threaded hole of the mandrel, and taking the mandrel out of the workpiece; sleeving the bush on the machined outer circle of the workpiece, machining the outer end face of the workpiece, and boring large and small inner holes and the bottom face; the tool is set from the bottom surface, the outer end surface of the workpiece is machined, and the length dimension L2 of the workpiece is ensured; the workpiece is cut off, and the total length L1 of the workpiece is ensured. The invention enhances the rigidity of parts, reduces the processing deformation of the parts, reduces the vibration in the processing of thin-wall parts and improves the processing quality and the surface roughness.
Description
Technical Field
The invention belongs to the technical field of machining, and particularly relates to a machining method of a high-precision deep-long hole thin-wall sleeve part.
Background
At present, for high-precision, deep-long hole and thin-wall sleeve parts, if the requirement on the dimensional precision of an inner hole and an outer circle is high, two machining methods are generally adopted: one is to perform rough machining, remove the allowance of the inner hole and the outer circle, perform heat treatment aging and then perform finish machining. During fine machining, an inner hole is machined firstly, and then an outer circle is machined by positioning the inner hole. The other is that after the rough machining is performed with aging, the inner hole and the outer circle are completed in one-time clamping machining. In either method, the dimensional accuracy is difficult to achieve completely if the dimensional accuracy is high. Especially, in the front end orifice position, the part size processing is difficult to be completely controlled within the tolerance range, and the ellipse is large, so that the part is not easy to be qualified. The situation that the length dimension is lengthened after the excircle or the inner hole is machined after the length dimension is ensured can also occur in the machining. The aluminum alloy material has relatively small length deformation, but the stainless steel material and the copper alloy material have large length deformation. The machining of the parts is a difficult problem in machining, the machining efficiency and the production progress are seriously influenced, and the bottleneck restricting the production is formed. There is therefore a need for improvements.
Disclosure of Invention
The technical problems solved by the invention are as follows: the invention provides a method for processing a high-precision deep-long hole thin-wall sleeve part, which simplifies processing process steps, enhances the rigidity of the part, reduces deformation in the processing of the part, reduces vibration generated in the processing process of the thin-wall part, and improves the processing quality and surface roughness of the part by manufacturing a simple clamp, thereby ensuring the requirements of size and appearance and realizing the processing of the part which meets the design drawing by using a quick and simple method.
The technical scheme adopted by the invention is as follows: the processing method of the high-precision deep long hole thin wall sleeve part comprises the following steps:
the method comprises the following steps: clamping a bar of a workpiece, performing rough machining by a lather, reserving machining allowance for an excircle and an inner hole of the workpiece, and reserving a process chuck;
step two: carrying out a heat treatment aging process on the roughly machined workpiece to remove machining stress;
step three: the process chuck for clamping the workpiece by using the lathe is used, and a lathe worker finishes finish machining of the workpiece in one-time clamping machining according to the design drawing requirement of the workpiece, wherein the finish machining of the workpiece is divided into the following six steps:
(1) manufacturing a mandrel, a bush and a screw according to the size requirement of a workpiece, wherein one end of the mandrel is provided with a threaded hole matched and screwed with the screw, and the bush is axially provided with an open slot;
(2) clamping a technological chuck of a workpiece on a lathe by using soft three claws, inserting a mandrel into a roughly machined inner hole of the workpiece, and feeding for three times to machine the outer circle of the part to the size required by a design drawing;
(3) screwing the screw into the threaded hole of the mandrel, and taking the mandrel out of the workpiece;
(4) sleeving a bush on a machined outer circle of a workpiece, machining the outer end face of the workpiece, and boring two inner holes of the workpiece and the bottom face of the workpiece;
(5) the tool is set from the bottom surface of the workpiece, the outer end surface of the workpiece is machined, and the depth L2 of the inner hole of the workpiece is ensured to be the size required by the design drawing;
(6) and cutting the workpiece from the tail of the process, and ensuring that the total length L1 of the workpiece is the size required by the design drawing.
In the first step, the machining allowance of the outer circle and the inner hole of the rough machining of the workpiece is the machining allowance of 0.5-0.8 mm for guaranteeing that a single side is reserved for finish machining, the part is large, the reserved allowance is large, the part is small, and the reserved allowance is small.
In the first step, the diameter of the excircle of the process chuck is consistent with the size of the rough machining excircle of the workpiece, the length of the process chuck cannot be smaller than 14mm, and for the workpiece with the length larger than 100mm, the length of the process chuck is 1/5-1/3 of the length of the workpiece.
In the step (2) of the third step, when the excircle of the workpiece is machined by the lathe, the guaranteed length dimension must be larger than the total length of the part and the width of the cutter, namely L13 is larger than L1+ L15;
in the step (4) of the third step, when boring the inner hole in the workpiece, the depth dimension L14 in the hole must be larger than the part end face thickness + the cutter width, i.e. L14> L1-L2+ L15.
In the step (1) of the third step, the mandrel is made of a nylon material, and the length of the mandrel is greater than the depth of an inner hole of the workpiece before finish machining, namely L3 is greater than L12; the diameter of the mandrel is manufactured in a sliding fit mode and is matched with the diameter of the inner hole of the workpiece, and for the workpiece with poor inner hole size consistency, grouped mandrels are manufactured and selected; the threaded hole on the mandrel is determined according to the size of the part, and the thread diameter of the threaded hole is smaller than 1/3 of the diameter of the mandrel.
In the step (1) of the third step, the screw is selected according to the diameter of the threaded hole of the mandrel, and the length L7 of the polished rod part of the screw is more than 15mm, namely L7>15 mm.
In the step (1) of the third step, the bushing is made of a nylon material, the total length L9 of the bushing is greater than the depth L2 of the inner hole of the workpiece, and preferably, L9 is 0.5-5 mm greater than L2; the diameter phi G of the inner hole of the bushing is smaller than the diameter phi C of the outer circle of the workpiece, and preferably, the diameter phi G is smaller than the diameter phi C by 0.2-0.5 mm; the wall thickness of the bushing is determined according to the excircle diameter phi C of the workpiece, the larger the excircle diameter phi C of the workpiece is, the larger the wall thickness of the bushing is, and the wall thickness dimension of the bushing, namely (phi H-phi G)/2 is not less than 3 mm; the width of the opening groove on the bushing is determined according to the precision of the excircle diameter phi C and the inner hole diameter phi B of the workpiece, the larger the excircle diameter phi C of the workpiece is, the larger the opening groove width dimension L10 is, the higher the precision of the inner hole diameter phi B of the workpiece is, the smaller the opening groove width dimension L10 is, and preferably, the opening groove width L10 is 0.5-5 mm.
Compared with the prior art, the invention has the advantages that:
1. according to the scheme, by manufacturing the simple clamp, the processing process steps of the deep-long hole thin-wall sleeve type parts are simplified, the rigidity of the parts is enhanced, the deformation in the part processing is reduced, the vibration generated in the thin-wall part processing process is reduced, and the processing quality and the surface roughness of the parts are improved, so that the size and the appearance requirements are ensured, and the parts which meet the design drawing are processed by a quick and simple method;
2. according to the scheme, two clamps are used for finishing the whole workpiece in one-time clamping, the process is simple and easy to realize, and the working efficiency is improved;
3. adopt two kinds of anchor clamps of mandrel and bush in this scheme, anchor clamps simple manufacture, extensive applicability, it is with low costs, anchor clamps loading and unloading are convenient.
Drawings
FIG. 1 is a schematic view of a workpiece machined according to the present invention;
FIG. 2 is a schematic view of the construction of the mandrel of the present invention;
FIG. 3 is a schematic view of the structure of the screw of the present invention;
FIG. 4 is a front view of the bushing construction of the present invention;
FIG. 5 is a left side view of the construction of the bushing of the present invention;
FIG. 6 is a schematic view of the rough machining of a workpiece according to the present invention;
FIG. 7 is a schematic structural view of the present invention for finish machining the outer circle of a workpiece using a mandrel;
FIG. 8 is a schematic view of the present invention with the mandrel removed from the workpiece;
FIG. 9 is a schematic structural view of the present invention for finish machining the inner hole of a workpiece by using a bush;
FIG. 10 is a schematic view of the present invention illustrating the inner hole length of the workpiece;
FIG. 11 is a schematic view of the overall length of the workpiece processed according to the present invention.
Detailed Description
Embodiments of the present invention are described below with reference to fig. 1-11.
Example 1:
the processing method of the high-precision deep long hole thin wall sleeve part comprises the following steps:
the method comprises the following steps: the machining process comprises the steps of clamping a workpiece 1 bar, roughly machining and forming by a turning worker according to the position shown in the figure 6, roughly machining the outer circle and the inner hole of the workpiece 1 to remove machining allowance, reserving machining allowance with a single side of 0.5-0.8 mm for finish machining by the machining allowance of the roughly machined outer circle and the inner hole, enabling a part to be large, reserving allowance to be large, enabling the part to be small and reserving allowance to be small. The process chuck 101 is reserved on the workpiece 1, the excircle diameter of the process chuck 101 is consistent with the rough machining excircle size of the workpiece 1, machining is facilitated, the length of the process chuck 101 cannot be smaller than 14mm, and for the workpiece 1 with the length larger than 100mm, the process chuck 101 takes 1/5-1/3 of the length of the workpiece 1, which is mainly determined according to specific conditions and takes the workpiece 1 to be firmly clamped as the standard.
Step two: after the rough machining of the workpiece 1, a heat treatment process is arranged, and the rough machined workpiece 1 is subjected to a heat treatment aging process to remove machining stress, stabilize the material structure of the part and reduce the deformation of the part during finish machining.
Step three: the process chuck 101 for clamping the workpiece 1 by a lathe is used, the lathe worker finishes finish machining of the workpiece 1 in one clamping machining according to the design drawing requirements of the workpiece 1 as shown in figure 1, the surface post-machining of the excircle and inner hole of the workpiece 1 with high precision requirements is carried out, and after all the dimensions are machined, the length dimension is lengthened due to extension, and the outer end surface of the tool-cutting machining must be guaranteed again. Wherein the fine processing of the workpiece 1 is divided into the following six steps:
(1) the mandrel 2, the bush 4 and the screw 3 are manufactured according to the size requirement of the workpiece 1, as shown in fig. 2, 3, 4 and 5, one end of the mandrel 2 is provided with a threaded hole 201 matched and screwed with the screw 3, and the bush 4 is axially provided with an open slot 401.
(2) Clamping a process chuck 101 of a workpiece 1 on a lathe by using soft three claws, plugging a mandrel 2 into a roughly machined inner hole of the workpiece 1, and feeding for multiple times to machine the outer circle of the workpiece 1 to the size required by the design drawing, as shown in FIG. 7; when the outer circle of the workpiece 1 is machined, the length dimension must be larger than the total length of the part and the width of the cutter, namely L13 is larger than L1 and L15.
(3) The screw 3 is screwed into the screw hole 201 of the spindle 2, and the spindle 2 is taken out of the workpiece 1, as shown in fig. 8.
(4) Sleeving the bush 4 on the machined outer circle of the workpiece 1, machining the outer end face of the workpiece 1, and boring two inner holes with the size of the workpiece 1 and the bottom face of the workpiece 1, as shown in fig. 9; when boring an inner hole into the workpiece 1, the depth dimension L14 in the hole must be greater than the part end face thickness + the cutter width, i.e., L14> L1-L2+ L15.
(5) And (3) processing the outer end face of the workpiece 1 from the bottom face of the large inner hole of the workpiece 1 to the cutter, and ensuring that the depth L2 of the inner hole of the workpiece 1 is the size required by the design drawing, as shown in FIG. 10.
(6) And cutting the workpiece 1 from the tail of the process, and ensuring that the total length L1 of the workpiece 1 is the required size of the design drawing, as shown in FIG. 11.
The following aspects need to be noted in the fabrication of the mandrel 2 and the bush 4:
the mandrel 2 is preferably made of nylon material, has good vibration resistance, is convenient for ensuring the size and the surface roughness, but is not limited to only select the nylon material. The length of the mandrel 2 is greater than the depth of an inner hole of the workpiece 1 before finish machining, namely L3> L12; the diameter of the mandrel 2 is manufactured in a sliding fit mode and is matched with the diameter of the inner hole of the workpiece 1, and the grouped mandrels 2 are manufactured and selected for the workpiece 1 with poor inner hole size consistency; a threaded hole 201 formed in one end of the spindle 2 is matched with the screw 3 to facilitate the spindle 2 to be taken out of an inner hole of the workpiece 1, the threaded hole 201 in the spindle 2 is determined according to the size of a part, and the thread diameter of the threaded hole 201 is smaller than 1/3 of the diameter of the spindle 2.
The screw 3 is selected according to the diameter of the threaded hole 201 of the mandrel 2, the countersunk diameter of the screw 3 is generally selected to be 20-50 mm, so that the holding is comfortable, the length L7 of the polished rod part of the screw 3 is larger than 15mm, namely L7 is larger than 15mm, and the head of the screw can be conveniently held by a hand to take out the mandrel 2.
The bushing 4 is made of a nylon material, has good vibration resistance, is convenient to ensure the size and the surface roughness, and is not limited to only the nylon material. The total length L9 of the bush 4 is greater than the depth L2 of the inner hole of the workpiece 1, preferably, L9 is 0.5-5 mm greater than L2; the diameter phi G of the inner hole of the bushing 4 is smaller than the diameter phi C of the outer circle of the workpiece 1, preferably, the diameter phi G is smaller than the diameter phi C by 0.2-0.5 mm, and the diameter phi G is selected according to the material of the bushing 4, so that the assembly and disassembly are convenient; the wall thickness of the bushing 4 is determined according to the excircle diameter phi C of the workpiece 1, the larger the excircle diameter phi C of the workpiece 1 is, the larger the wall thickness of the bushing 4 is, and the wall thickness of the bushing 4, namely (phi H-phi G)/2 is not less than 3mm, and is generally selected to be 3-8 mm; the width of the opening groove 401 on the bushing 4 is determined according to the precision of the excircle diameter phi C and the inner hole diameter phi B of the workpiece 1, the larger the excircle diameter phi C of the workpiece 1 is, the larger the width dimension L10 of the opening groove 401 is, the higher the precision of the inner hole diameter phi B of the opening groove 401 is, and the smaller the width dimension L10 of the opening groove 401 is, preferably, the width L10 of the opening groove 401 is 0.5-5 mm, and is specifically selected according to the use condition.
Example 2
The following describes specific parameters and processes in the processing method with a specific deep-long hole thin-wall sleeve workpiece 1: wherein, the workpiece 1 has a total length L1 of
Inner bore length L2 of
The diameter of the outer circle phi C is
Inner bore diameter Φ B of
The processing comprises the following steps:
the method comprises the following steps: the machining process comprises the steps of clamping a workpiece 1 bar, roughly machining and forming by a lather according to the position shown in figure 6, roughly machining the outer circle and the inner hole of the workpiece 1 to remove machining allowance, reserving machining allowance of a single side of 0.5-0.8 mm for fine machining by the rough machining allowance of the outer circle and the inner hole, specifically, roughly machining and forming the workpiece 1 to be 69mm in total length, 53 +/-0.1 mm in rough machining inner hole length L12, 24mm in diameter of the outer circle of rough machining and 21mm in diameter of the inner hole of rough machining. And a process chuck 101 is left on the workpiece 1, the diameter of the excircle of the process chuck 101 is consistent with the size of the rough machining excircle of the workpiece 1, so that the process chuck is convenient to machine, and the length of the process chuck 101 is 15mm and is not less than 14 mm.
Step two: arranging a heat treatment process after the rough machining of the workpiece 1, and performing a heat treatment aging process on the rough machined workpiece 1 to remove machining stress, stabilize the material structure of the part and reduce the deformation of the part during finish machining;
step three: the process chuck 101 for clamping the workpiece 1 by a lathe is used, the lathe worker finishes finish machining of the workpiece 1 in one clamping machining according to the design drawing requirements of the workpiece 1 as shown in figure 1, the surface post-machining of the excircle and inner hole of the workpiece 1 with high precision requirements is carried out, and after all the dimensions are machined, the length dimension is lengthened due to extension, and the outer end surface of the tool-cutting machining must be guaranteed again. Wherein the fine processing of the workpiece 1 is divided into the following six steps:
(1) the mandrel 2, the bush 4 and the screw 3 are manufactured according to the size requirement of the workpiece 1, as shown in fig. 2, 3, 4 and 5, one end of the mandrel 2 is provided with a threaded hole 201 matched and screwed with the screw 3, and the bush 4 is axially provided with an open slot 401.
The following aspects need to be noted in the fabrication of the mandrel 2 and the bush 4:
the mandrel 2 is preferably made of nylon material, has good vibration resistance, is convenient for ensuring the size and the surface roughness, but is not limited to only select the nylon material. The length of the mandrel 2 is greater than that of the inner hole of the workpiece 1 before finish machining, namely L3 is 56mm>L12 ═ 53 ± 0.1 mm; the diameter of the mandrel 2 is manufactured according to a sliding fit and is made to be matched with the diameter of the inner hole of the workpiece 1
Matching, wherein the diameter of the material is phi 21 mm; a threaded hole 201 formed in one end of the spindle 2 is matched with the screw 3 to facilitate the spindle 2 to be taken out of an inner hole of the workpiece 1, the threaded hole 201 in the spindle 2 is determined according to the size of a part, and the thread diameter of the threaded hole 201 is M6 and is less than 1/3 of the diameter of the spindle 2.
The screw 3 is selected according to the diameter of the threaded hole 201 of the mandrel 2, and the length L7 of the polished rod part of the screw 3 is set to be 16mm and larger than 15mm, so that the screw head can be conveniently held by a hand to take out the mandrel 2.
The bushing 4 is made of a nylon material, has good vibration resistance, is convenient to ensure the size and the surface roughness, and is not limited to only the nylon material. What is needed isThe total length L9 of the bush 4 is set to be 53.5 +/-0.1 mm and is larger than the value of L2 of the depth of the inner hole of the workpiece 1
Preferably, the difference between L9 and L2 is within the range of 0.5-5 mm; the diameter phi G of the inner hole of the bushing 4 is
Smaller than the diameter phi C of the outer circle of the workpiece 1
The phase difference between phi G and phi C is within the range of 0.2-0.5 mm; the wall thickness of the bushing 4 is determined according to the excircle diameter phi C of the workpiece 1, the larger the diameter phi C of the workpiece 1 is, the larger the wall thickness of the bushing 4 is, and the wall thickness of the bushing 4, namely (phi H-phi G)/2 is 5mm and is not less than 3 mm; the width of the opening groove 401 on the bushing 4 is determined according to the accuracy of the excircle diameter phi C and the inner hole diameter phi B of the workpiece 1, the larger the excircle diameter phi C of the workpiece 1 is, the larger the width dimension L10 of the opening groove 401 is, the higher the accuracy of the inner hole diameter phi B of the workpiece 1 is, and the smaller the width dimension L10 of the opening groove 401 is, preferably, the width L10 of the opening groove 401 is 1mm and is within the range of 0.5-5 mm.
(2) Clamping a process chuck 101 of a workpiece 1 on a lathe by using soft three claws, plugging a mandrel 2 into a roughly machined inner hole of the workpiece 1, and feeding for three times to machine the outer circle of the workpiece 1 to the size required by the design drawing, as shown in FIG. 7; when the excircle of the workpiece 1 is machined by a lathe, the length dimension L13 is ensured to be 55mm and must be larger than the total length of the part and the width of a cutter;
(3) screwing the screw 3 into the threaded hole 201 of the mandrel 2, and taking the mandrel 2 out of the workpiece 1, as shown in fig. 8;
(4) sleeving the bush 4 on the machined outer circle of the workpiece 1, machining the outer end face of the workpiece 1, and boring two inner holes with the size of the workpiece 1 and the bottom face of the workpiece 1, as shown in fig. 9; when boring a small inner hole on the workpiece 1, the depth dimension L14 in the small hole is processed to be 2.5mm and must be larger than the end face thickness of the part plus the width of the cutter.
(5) Processing the outer end face of the workpiece 1 from the bottom face of the large inner hole of the workpiece 1 to the cutter, and ensuring that the length dimension L2 of the workpiece 1 is the required dimension of the design drawing, as shown in FIG. 10;
(6) and cutting the workpiece 1 from the tail of the process, and ensuring that the total length L1 of the workpiece 1 is the required size of the design drawing, as shown in FIG. 11.
According to the invention, by manufacturing the simple clamp, the rigidity of the part is enhanced, the deformation in the part processing is reduced, the vibration generated in the thin-wall part processing process is reduced, and the part processing quality and the surface roughness are improved, so that the size and appearance requirements are ensured, and the part which meets the design drawing is processed by a quick and simple method.
The above-mentioned embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and therefore, all equivalent changes made by the contents of the claims of the present invention should be included in the claims of the present invention.
Claims (8)
1. The processing method of the high-precision deep long hole thin-wall sleeve part is characterized in that: the method comprises the following steps:
the method comprises the following steps: clamping a bar of a workpiece (1), roughly machining and forming by lathing, reserving machining allowance on the excircle and the inner hole of the workpiece (1), and reserving a process chuck (101);
step two: carrying out a heat treatment aging process on the roughly processed workpiece (1) to remove processing stress;
step three: the process chuck (101) of lathe centre gripping work piece (1), the lathe worker is according to the design drawing requirement of work piece (1) and accomplishes the finish machining to work piece (1) in a clamping processing, wherein work piece (1) finish machining specifically divide into following six process steps again:
(1) manufacturing a mandrel (2), a bush (4) and a screw (3) according to the size requirement of a workpiece (1), wherein one end of the mandrel (2) is provided with a threaded hole (201) matched and screwed with the screw (3), and an open slot (401) is axially arranged on the bush (4);
(2) clamping a process chuck (101) of a workpiece (1) on a lathe by using soft three claws, plugging a mandrel (2) into a roughly machined inner hole of the workpiece (1), and feeding for multiple times to machine the excircle of the part to the size required by a design drawing;
(3) screwing the screw (3) into the threaded hole (201) of the mandrel (2), and taking the mandrel (2) out of the workpiece (1);
(4) sleeving the bush (4) on the machined outer circle of the workpiece (1), machining the outer end face of the workpiece (1), and boring two large and small inner holes and the bottom face of the workpiece (1);
(5) setting a tool from the bottom surface of the workpiece (1), machining the outer end surface of the workpiece (1), and ensuring that the depth L2 of an inner hole of the workpiece (1) is the size required by a design drawing;
(6) and cutting the workpiece (1) from the tail of the process, and ensuring that the total length L1 of the workpiece (1) is the size required by the design drawing.
2. The processing method of the high-precision deep long hole thin-wall sleeve part according to claim 1, characterized in that: in the first step, the machining allowance of the outer circle and the inner hole of the rough machining of the workpiece (1) is the machining allowance of 0.5-0.8 mm for guaranteeing that a single side is reserved for finish machining, and the workpiece is large, the reserved allowance is large, the workpiece is small and the reserved allowance is small.
3. The processing method of the high-precision deep long hole thin-wall sleeve part according to claim 1, characterized in that: in the first step, the excircle diameter of the process chuck (101) is consistent with the size of the rough machining excircle of the workpiece (1), the length of the process chuck (101) cannot be smaller than 14mm, and for the workpiece (1) with the length larger than 100mm, 1/5-1/3 of the length of the workpiece (1) is taken by the process chuck (101).
4. The processing method of the high-precision deep long hole thin-wall sleeve part according to claim 1, characterized in that: in the step (2) of the third step, the guaranteed length dimension of the lathe for machining the outer circle of the workpiece (1) must be larger than the total length of the part and the width of the cutter, namely L13 is larger than L1 and L15.
5. The processing method of the high-precision deep long hole thin-wall sleeve part according to claim 1, characterized in that: in the step (4) of the third step, when boring the inner hole in the workpiece (1), the depth dimension L14 in the hole must be larger than the end face thickness of the part plus the width of the cutter, i.e. L14> L1-L2+ L15.
6. The processing method of the high-precision deep long hole thin-wall sleeve part according to claim 1, characterized in that: in the step (1) of the third step, the mandrel (2) is made of a nylon material, and the length of the mandrel (2) is greater than the depth of an inner hole of the workpiece (1) before finish machining, namely L3 is greater than L12; the diameter of the mandrel (2) is manufactured in a sliding fit manner and is matched with the diameter of the inner hole of the workpiece (1), and the grouped mandrels (2) are manufactured and selected for the workpiece (1) with poor inner hole size consistency; the threaded hole (201) on the mandrel (2) is determined according to the size of the part, and the thread diameter of the threaded hole (201) is smaller than 1/3 of the diameter of the mandrel (2).
7. The processing method of the high-precision deep long hole thin-wall sleeve part according to claim 1, characterized in that: in the step (1) of the third step, the screw (3) is selected according to the diameter of the threaded hole (201) of the mandrel (2), and the length L7 of the polished rod part of the screw (3) is more than 15 mm.
8. The processing method of the high-precision deep long hole thin-wall sleeve part according to claim 1, characterized in that: in the step (1) of the third step, the bushing (4) is made of a nylon material, and the total length L9 of the bushing (4) is 0.5-5 mm greater than the depth L2 of the inner hole of the workpiece (1); the diameter phi G of the inner hole of the bushing (4) is 0.2-0.5 mm smaller than the diameter phi C of the excircle of the workpiece (1); the wall thickness of the bushing (4) is determined according to the excircle diameter phi C of the workpiece (1), the larger the excircle diameter phi C of the workpiece (1) is, the larger the wall thickness of the bushing (4) is, and the wall thickness dimension of the bushing (4), namely (phi H-phi G)/2 is not less than 3mm, wherein phi H is the outer diameter dimension of the bushing (4); the width of an opening groove (401) on the bushing (4) is determined according to the precision of the excircle diameter phi C and the inner hole diameter phi B of a workpiece (1), the bigger the excircle diameter phi C of the workpiece (1) is, the bigger the width dimension L10 of the opening groove (401) is, the higher the precision of the inner hole diameter phi B of the workpiece (1) is, the smaller the width dimension L10 of the opening groove (401) is, and the width L10 of the opening groove (401) is 0.5-5 mm.
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|---|---|---|---|---|
| CN110052638B (en) * | 2019-04-20 | 2020-10-30 | 慈溪市中航精密机械设备制造有限公司 | Fire extinguishing bomb cabin body processing technology |
| CN110076529B (en) * | 2019-05-15 | 2020-12-18 | 山西航天清华装备有限责任公司 | Stable-state machining method for weak-rigidity radial multi-hole-system precision valve sleeve |
| CN110026748A (en) * | 2019-05-24 | 2019-07-19 | 无锡亿锞精密机械有限公司 | Ultra-thin non-magnetic alloy steel inside and outside circle precise machining process |
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| CN111037226B (en) * | 2019-12-19 | 2021-07-13 | 北京精密机电控制设备研究所 | Processing method of titanium alloy thin-wall part |
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| CN112404917B (en) * | 2020-10-13 | 2022-08-12 | 北京卫星制造厂有限公司 | Precise manufacturing method of stainless steel thin-wall evaporator shell with fine internal threads |
| CN112570986A (en) * | 2020-10-27 | 2021-03-30 | 沈阳富创精密设备股份有限公司 | Machining process of thin-wall annular part of IC (integrated circuit) equipment |
| CN112338457B (en) * | 2020-10-28 | 2021-12-07 | 厦门健康伦自动仪器有限公司 | Machining process for circular ring thin-wall workpiece |
| CN112247493A (en) * | 2020-10-28 | 2021-01-22 | 重庆水泵厂有限责任公司 | Machining method of thin-wall sleeve type part |
| CN113118784B (en) * | 2021-05-18 | 2022-12-30 | 重庆建设工业(集团)有限责任公司 | Automatic avatar tube production line |
| CN113909821B (en) * | 2021-10-28 | 2023-03-28 | 航天精工股份有限公司 | Precise numerical control machining method for titanium alloy thin-wall lens barrel part |
| CN114161095A (en) * | 2021-12-27 | 2022-03-11 | 中船重工西安东仪科工集团有限公司 | Clamping method for engineering plastic long pipe thin-wall part |
| CN115156847B (en) * | 2022-06-22 | 2024-05-14 | 浙江先导精密机械有限公司 | Processing method of thin-wall ring parts |
| CN115194418B (en) * | 2022-08-31 | 2024-02-20 | 江阴天澄机械装备有限公司 | Processing technology of integrated special-shaped thin-wall shell |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56105827A (en) * | 1980-01-29 | 1981-08-22 | Toshiba Corp | Manufacture of thin walled cylindrical body |
| WO2002014577A1 (en) * | 2000-08-04 | 2002-02-21 | Japan Lifeline Co., Ltd | Method for manufacturing cylindrical thin-wall metal member |
| DE102005062817A1 (en) * | 2004-12-27 | 2007-02-01 | IFUTEC Ingenieurbüro für Umformtechnik GmbH | Rigid, multi-part hollow shaped article, especially hollow shaft, is obtained by securely fixing prefabricated component in interior of tubular element by plastic deformation of the tubular element |
| CN101704178B (en) * | 2009-10-29 | 2012-07-25 | 西北锆管有限责任公司 | Method for processing thin-walled tube of zirconium alloy specially used by nuclear reactor |
| CN101972943B (en) * | 2010-10-27 | 2012-07-18 | 北京遥测技术研究所 | Turning positioning fixture for thin-wall rotational parts and clamping method |
| CN103949851B (en) * | 2014-04-16 | 2016-08-31 | 贵州凯星液力传动机械有限公司 | A kind of processing method of aluminium alloy thin-walled cylindrical member |
| CN104907595B (en) * | 2015-06-23 | 2017-06-09 | 宁波市鸿腾机电有限公司 | The inner support swelling fixture and Cutting Process of ultra-thin-wall large-size cylinder body class cutting workpiece |
| CN105328409A (en) * | 2015-10-28 | 2016-02-17 | 湖北三江航天红阳机电有限公司 | Method for machining thin-wall sleeve type part through wedge type inner supporting mechanism |
| CN107891250B (en) * | 2017-10-27 | 2019-04-19 | 重庆跃进机械厂有限公司 | The machining manufacture of precision positioning mandrel |
| CN108481192B (en) * | 2018-03-09 | 2020-11-13 | 宝鸡石油机械有限责任公司 | Grinding clamp suitable for thin-wall long spacer bush and clamping method |
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