Machining process for thin-wall sealing sleeve type parts of motorized spindle
By first producing a semi-finished product and then fitting it onto the machine body for precision machining during the processing of the thin-walled sealing sleeve of the electric spindle, the problem of easy deformation of the thin-walled sealing sleeve is solved, and the accuracy and assembly efficiency are improved.
Patent Information
- Application Number
- CN202511785284.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-01
- Publication Date
- 2026-02-17
AI Technical Summary
Existing technologies for machining thin-walled sealing sleeves for electric spindles suffer from space constraints, leading to easy deformation of the sealing sleeves and making it difficult to guarantee machining accuracy. This is especially true when the thickness is less than 5mm, where existing methods are ineffective in solving the deformation problem.
By pre-fabricating a thin-walled sealing sleeve semi-finished product on a turning machine, and then fitting it onto the machine body for precision machining, the machine body is used to replace the thin-walled sealing sleeve for clamping, avoiding direct clamping of the thin-walled sealing sleeve itself, thus ensuring machining accuracy and assembly efficiency.
This technology enables precision control and improved assembly efficiency for thin-walled sealing sleeves, avoids deformation caused by clamping force, and ensures processing quality.
Smart Images
Figure CN121535458A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of manufacturing technology for thin-walled sealing sleeve parts, and in particular to a processing technology for thin-walled sealing sleeve parts for electric spindles. Background Technology
[0002] As a core functional component of CNC machine tools, heat dissipation during the operation of the electric spindle is particularly important. In the existing technology, during the turning of the sealing sleeve of the cooling system at the front end of the electric spindle, the sealing sleeve is usually thin due to the spatial size limitations of the electric spindle. For example, when the inner diameter of the sealing sleeve is 150mm, its thickness is usually less than 5mm. This makes it very easy for the sealing sleeve to deform during the turning process due to clamping and machining forces, resulting in poor machining accuracy. The deformation amount is usually between 0.1mm and 0.4mm or more when measured by cylindricity. The existing technology usually solves this problem by trying to control the thickness of thin-walled parts such as sealing sleeves to be more than 5mm, reducing the clamping force during turning, reducing the depth of cut during turning, and selecting materials with better rigidity. Although the existing technology can control the deformation amount to a relatively small extent and meet the usage requirements to a certain extent, when the thickness of the part cannot reach 5mm due to other limitations (installation space size), it is difficult to solve the deformation problem by reducing the clamping force during turning, reducing the depth of cut during turning, and selecting materials with better rigidity. Summary of the Invention
[0003] The purpose of this application is to provide a machining process for thin-walled sealing sleeve parts of electric spindles to ensure the accuracy of the thin-walled sealing sleeve parts after turning.
[0004] The technical solution of this application is: a processing technology for thin-walled sealing sleeve parts of electric spindles, applied to the processing of thin-walled sealing sleeves, the processing technology including the following steps: S1: Stainless steel pipes are cut and processed to obtain blanks; S2: The blank is rough-machined by a lathe to obtain a thin-walled sealing sleeve semi-finished product; S3: The thin-walled sealing sleeve semi-finished product is fitted onto the pre-assembled machine body, and the machine body replaces the thin-walled sealing sleeve semi-finished product to be installed on the turning machine tool for precision machining, thereby obtaining the thin-walled sealing sleeve finished product. S4: Remove the machine body from the turning machine tool to obtain the accessory unit for subsequent assembly of the spindle finished product.
[0005] Optionally, in step S1, the step of cutting and processing the stainless steel pipe to obtain the blank specifically includes: The stainless steel pipes used are subjected to flaw detection using a flaw detector to ensure their strength. The stainless steel pipes that do not meet the strength requirements are recycled and smelted, and the stainless steel pipes that meet the strength requirements are installed on a cutting machine and cut to obtain multiple blanks of the required length. The blank is mounted on a grinding machine for grinding and polishing of the cut surfaces.
[0006] Optionally, in step S2, the rough machining of the blank using a lathe to obtain a thin-walled sealing sleeve semi-finished product specifically includes: The blank is measured using a measuring instrument to ensure that the length of the blank meets the required specifications; The blanks with a length shorter than the required length are recycled and smelted. The blanks with a length longer than the required length are ground to the required length using a grinding machine. The blanks with the required length are then mounted on a turning machine for rough machining to obtain a thin-walled sealing sleeve semi-finished product with a thickness greater than 5mm, ensuring the accuracy of machining the inner hole of the thin-walled sealing sleeve semi-finished product.
[0007] Optionally, in step S3, the body includes: A cooling water tank is provided on the machine body, and two sealing rings are provided on the machine body. The cooling water tank is located between the two sealing rings, and a tooling cover is provided on the machine body.
[0008] Optionally, in step S3, the step of fitting the thin-walled sealing sleeve semi-finished product onto the pre-assembled machine body, and having the machine body replace the thin-walled sealing sleeve semi-finished product in the machine tool for finishing to obtain the finished thin-walled sealing sleeve, specifically includes: The thin-walled sealing sleeve semi-finished product is measured using a measuring instrument to ensure that the inner diameter of the thin-walled sealing sleeve semi-finished product meets the required requirements; The thin-walled sealing sleeve semi-finished product with an inner diameter larger than the required size is recycled and smelted. The thin-walled sealing sleeve semi-finished product with an inner diameter smaller than the required size is turned to the required size by the turning machine tool. The thin-walled sealing sleeve semi-finished product with an inner diameter of the required size is put on the pre-assembled machine body. The machine body is pre-installed with a sealing ring. The thin-walled sealing sleeve semi-finished product cooperates with the sealing ring to seal the cooling water tank opened on the machine body. The machine body with the thin-walled sealing sleeve semi-finished product is installed on the turning machine tool, and the outer diameter of the thin-walled sealing sleeve semi-finished product is turned to obtain the thin-walled sealing sleeve finished product.
[0009] Optionally, after fitting the thin-walled sealing sleeve semi-finished product with the required inner diameter onto the pre-assembled machine body, the method further includes: The tooling cover is fixed to the machine body with screws to press and fix the thin-walled sealing sleeve semi-finished product.
[0010] Optionally, in step S4, removing the machine body from the turning machine to obtain the accessory unit for subsequent spindle assembly specifically includes: The machine body is removed from the turning machine tool, and then the tooling cover is removed from the machine body to obtain the accessory unit for subsequent assembly of the spindle finished product; The thin-walled sealing sleeve on the accessory unit is measured using a measuring instrument to ensure that the outer diameter of the thin-walled sealing sleeve meets the required requirements; The thin-walled sealing sleeve with an outer diameter smaller than the required size is removed from the machine body for recycling and smelting, and the thin-walled sealing sleeve with an outer diameter larger than the required size is turned to the required size by the turning machine tool.
[0011] Compared with the prior art, this application has the following advantages: 1. A thin-walled sealing sleeve semi-finished product is pre-made using a turning machine tool. Then, the thin-walled sealing sleeve semi-finished product is fitted onto the machine body, and the machine body replaces the thin-walled sealing sleeve when it is installed on the turning machine tool for finishing of the thin-walled sealing sleeve. This realizes the transformation of the machining of a single part into the machining of a kit part. During turning, it is not necessary to directly clamp the thin-walled sealing sleeve itself; instead, the larger and thicker machine body can be clamped. There is no need to consider the deformation caused by clamping force, which simplifies the problem of machining thin-walled sealing sleeves with smaller thicknesses.
[0012] 2. By first producing a thin-walled sealing sleeve semi-finished product, the thickness of the thin-walled sealing sleeve semi-finished product can be controlled, thus ensuring the accuracy when machining the inner hole of the thin-walled sealing sleeve. This avoids directly machining the finished thin-walled sealing sleeve, which can cause deformation problems during machining due to clamping and machining forces.
[0013] 3. By placing the thin-walled sealing sleeve semi-finished product on the machine body, and then using the machine body to replace the thin-walled sealing sleeve on the turning machine tool for finishing of the thin-walled sealing sleeve, the finished thin-walled sealing sleeve can be directly integrated with the machine body as a component unit for subsequent assembly of the spindle. Compared with the existing processing technology, it is not necessary to process the thin-walled sealing sleeve to a finished product before assembly, which ensures processing quality while improving assembly efficiency. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the thin-walled sealing sleeve of this application being fitted onto the machine body; Figure 2 This is a schematic diagram of the tooling gland structure of this application; Figure 3 This is a process flow diagram for this application.
[0015] The components in the attached diagram are marked as follows: 1-body, 1001-cooling water tank, 2-thin-walled sealing sleeve, 3-sealing ring, 4-tooling cover. Detailed Implementation
[0016] The technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0017] Thin-walled sealing sleeves are prone to deformation during turning due to clamping and machining forces, resulting in poor machining accuracy. Existing technologies can control the deformation to a relatively small extent, which can meet the usage requirements to a certain extent. However, when the thickness of the part is less than 5mm due to other limitations (installation space size), it is difficult to solve the deformation problem by reducing the clamping force during turning, reducing the depth of cut during turning, and selecting materials with better rigidity.
[0018] This embodiment provides a machining process for thin-walled sealing sleeve parts of electric spindles, referring to... Figures 1-3 As shown, this embodiment uses the machining of a thin-walled sealing sleeve 2 applied to a KL-15018F.BBT40 type electric spindle as an example. The thin-walled sealing sleeve 2 of this type of electric spindle has an outer diameter of 155mm, a length of 65.9mm, and a thickness of 3mm. The machining process of this type of thin-walled sealing sleeve part for electric spindles includes the following steps: S1: Stainless steel pipes are cut and processed to obtain blanks.
[0019] Specifically, before machining the thin-walled sealing sleeve 2, stainless steel pipes are taken and inspected with a flaw detector to ensure that the stainless steel pipes have qualified strength. Stainless steel pipes that are not qualified in strength or have damage are recycled and smelted. Stainless steel pipes that are qualified in strength and have no damage are cut by a cutting machine to obtain multiple blanks with a length of 65.9mm. Then, the cut surfaces of the blanks are ground and polished by a grinding machine.
[0020] S2: The blank is rough-machined by a lathe to obtain a thin-walled sealing sleeve 2 semi-finished product.
[0021] Specifically, after the cut surface of the blank is ground and polished, the length of the blank is measured using a measuring instrument to ensure that the length of the blank is 65.9mm. Blanks with a length less than 65.9mm are recycled for smelting, while blanks with a length greater than 65.9mm are ground again by a grinding machine until the length is 65.9mm. Blanks with a length of 65.9mm are then mounted on a turning machine for rough machining, which produces a thin-walled sealing sleeve 2 semi-finished product with an outer diameter of 165mm, an inner diameter of 149mm, and a length of 65.9mm. The thickness of the thin-walled sealing sleeve 2 semi-finished product is 8mm to ensure the accuracy of machining the inner hole and avoid deformation problems during machining.
[0022] S3: The thin-walled sealing sleeve 2 semi-finished product is placed on the pre-assembled machine body 1, and the machine body 1 replaces the thin-walled sealing sleeve 2 semi-finished product and is installed on a turning machine tool for precision machining to obtain the thin-walled sealing sleeve 2 finished product.
[0023] Specifically, after obtaining the thin-walled sealing sleeve 2 semi-finished product, the inner diameter of the thin-walled sealing sleeve 2 semi-finished product is measured using a measuring instrument to ensure that the inner diameter of the thin-walled sealing sleeve 2 semi-finished product is 149mm. Thin-walled sealing sleeve 2 semi-finished products with an inner diameter greater than 149mm are recycled and smelted; thin-walled sealing sleeve 2 semi-finished products with an inner diameter less than 149mm are machined again until the inner diameter is 149mm. Thin-walled sealing sleeve 2 semi-finished products with an inner diameter equal to 149mm are directly fitted onto the pre-assembled machine body 1; after fitting the thin-walled sealing sleeve... Before installing the thin-walled sealing sleeve 2 semi-finished product, the sealing ring 3 is pre-installed on the machine body 1. The thin-walled sealing sleeve 2 semi-finished product and the sealing ring 3 together seal the cooling water tank 1001. After the thin-walled sealing sleeve 2 semi-finished product is installed, the tooling cover 4 is fixed on the machine body 1 with screws to press and fix the thin-walled sealing sleeve 2 semi-finished product. Then, the machine body 1 with the thin-walled sealing sleeve 2 semi-finished product installed is installed on a turning machine tool, and the turning machine tool turns the outer diameter of the thin-walled sealing sleeve 2 semi-finished product, so that the outer diameter of the thin-walled sealing sleeve 2 semi-finished product is processed from 165mm to 155mm.
[0024] S4: Remove the machine body 1 from the turning machine to obtain the accessory unit for subsequent assembly of the spindle finished product.
[0025] After the thin-walled sealing sleeve 2 semi-finished product is finished, the machine body 1 is removed from the turning machine tool, and then the tooling cover 4 is removed. The thin-walled sealing sleeve 2 does not need to be removed and is retained on the machine body 1, and is directly used as an accessory unit with the machine body 1 for subsequent spindle assembly. After the machine body 1 is removed from the turning machine tool and the tooling cover 4 is removed, the outer diameter of the thin-walled sealing sleeve 2 is measured with a measuring instrument to avoid affecting subsequent assembly. For thin-walled sealing sleeves 2 with an outer diameter of less than 155mm, they need to be removed from the machine body 1. For thin-walled sealing sleeves 2 with an outer diameter greater than 155mm but not less than 155mm, the parts with an outer diameter greater than 155mm need to be finished again.
[0026] The following is a detailed description of this embodiment: The thin-walled sealing sleeve 2 semi-finished product is pre-made by a turning machine tool, and then the thin-walled sealing sleeve 2 semi-finished product is fitted onto the machine body 1. The machine body 1 replaces the thin-walled sealing sleeve 2 and is installed on the turning machine tool for finishing of the thin-walled sealing sleeve 2. This realizes the transformation of the machining of a single part into the machining of a kit part. During turning, it is not necessary to directly clamp the thin-walled sealing sleeve 2 itself, but to clamp the larger and thicker machine body 1. There is no need to consider the deformation problem caused by clamping force, which simplifies the problem of the difficulty in machining the thin-walled sealing sleeve 2 with a smaller thickness.
[0027] Furthermore, by first producing a semi-finished thin-walled sealing sleeve 2, the thickness of the semi-finished thin-walled sealing sleeve 2 can be controlled to 8mm or more, thus ensuring the accuracy when machining the inner hole of the thin-walled sealing sleeve 2 and avoiding direct machining of the finished thin-walled sealing sleeve 2, which would cause deformation problems during machining due to clamping and machining forces.
[0028] Furthermore, by placing the thin-walled sealing sleeve 2 semi-finished product onto the machine body 1, and having the machine body 1 replace the thin-walled sealing sleeve 2 on a turning machine tool for finishing of the thin-walled sealing sleeve 2, the thin-walled sealing sleeve 2 can be directly integrated with the machine body 1 as a component unit for subsequent assembly of the spindle. Compared with the existing processing technology, it is not necessary to process the thin-walled sealing sleeve 2 to a finished product before assembly, which ensures processing quality while improving assembly efficiency.
[0029] Although this application has been described with reference to exemplary embodiments, it should be understood that this application is not limited to the disclosed exemplary embodiments. The scope of the following claims should be given the broadest interpretation so as to cover all variations and equivalent structures and functions.
Claims
1. A machining process for thin-walled sealing sleeve parts of an electric spindle, applied to the machining of thin-walled sealing sleeves (2), characterized in that: The processing technology comprises the following steps: S1: taking stainless steel pipe for cutting processing to obtain blank; S2: rough machining the blank by a turning machine to obtain a thin-wall sealing sleeve (2) semi-finished product; S3: sleeving the thin-wall sealing sleeve (2) semi-finished product on a pre-assembled machine body (1), and installing the machine body (1) on the turning machine to replace the thin-wall sealing sleeve (2) semi-finished product for fine machining to obtain a thin-wall sealing sleeve (2) finished product; S4: dismounting the machine body (1) from the turning machine to obtain a spare unit for subsequent assembly of a spindle finished product.
2. The process for machining of thin-walled sleeve class parts of the electric spindle according to claim 1, characterized in that: In the S1 step, the taking stainless steel pipe for cutting processing to obtain blank specifically comprises: detecting the taken stainless steel pipe by a flaw detector to ensure the strength of the taken stainless steel pipe; recycling and smelting the stainless steel pipe with unqualified strength, and cutting the stainless steel pipe with qualified strength on a cutting machine to obtain a plurality of blanks with required length; installing the blank on a grinding machine for grinding and polishing work of the cutting surface.
3. The process for machining thin-walled sleeve parts of an electric spindle according to claim 1, characterized in that: In the S2 step, the rough machining the blank by a turning machine to obtain a thin-wall sealing sleeve (2) semi-finished product specifically comprises: measuring the blank by a measuring instrument to ensure that the length of the blank meets the requirements; recycling and smelting the blank with length less than the required length, grinding the blank with length greater than the required length to the required length by a grinding machine, and rough machining the blank with length as the required length on a turning machine to obtain a thin-wall sealing sleeve (2) semi-finished product with thickness greater than 5 mm, and ensuring the accuracy of the thin-wall sealing sleeve (2) semi-finished product when machining the inner hole.
4. The process for machining of thin-walled sleeve class parts of the electric spindle according to claim 1, characterized in that: In the S3 step, the machine body (1) comprises: a cooling water groove (1001) formed on the machine body (1), two sealing rings (3) arranged on the machine body (1), the cooling water groove (1001) located between the two sealing rings (3), and a tooling gland (4) arranged on the machine body (1).
5. The process for machining of thin-walled sleeve class parts of the electric spindle according to claim 4, characterized by the fact that: In the S3 step, the sleeving the thin-wall sealing sleeve (2) semi-finished product on the pre-assembled machine body (1), and installing the machine body (1) on the turning machine to replace the thin-wall sealing sleeve (2) semi-finished product for fine machining to obtain a thin-wall sealing sleeve (2) finished product specifically comprises: measuring the thin-wall sealing sleeve (2) semi-finished product by a measuring instrument to ensure that the inner diameter of the thin-wall sealing sleeve (2) semi-finished product meets the requirements; recycling and smelting the thin-wall sealing sleeve (2) semi-finished product with inner diameter greater than the required size, turning the thin-wall sealing sleeve (2) semi-finished product with inner diameter less than the required size to the required size by the turning machine, and sleeving the thin-wall sealing sleeve (2) semi-finished product with inner diameter as the required size on the pre-assembled machine body (1), the machine body (1) being pre-installed with a sealing ring (3), and the thin-wall sealing sleeve (2) semi-finished product cooperating with the sealing ring (3) to close the cooling water groove (1001) formed on the machine body (1); The machine body (1) with the thin-wall sealing sleeve (2) semi-finished product sleeved is installed on the turning machine tool, and the outer diameter of the thin-wall sealing sleeve (2) semi-finished product is turned to obtain the thin-wall sealing sleeve (2) finished product.
6. The processing technology of the thin-wall sealing sleeve part of the electric spindle according to claim 5, characterized in that: After the thin-wall sealing sleeve (2) semi-finished product with the required inner diameter is sleeved on the pre-assembled machine body (1), the following steps are further included: The tooling gland (4) is fixed on the machine body (1) through screws, and the thin-wall sealing sleeve (2) semi-finished product is tightly fixed.
7. A process for machining an electric-spindle thin-wall seal-sleeve class part according to claim 6, characterized by the fact that: In the S4 step, the machine body (1) is removed from the turning machine tool to obtain a spare unit for subsequent assembly of the finished spindle product, which specifically includes: The machine body (1) is removed from the turning machine tool, and then the tooling gland (4) is removed from the machine body (1) to obtain a spare unit for subsequent assembly of the finished spindle product; The thin-wall sealing sleeve (2) on the spare unit is measured by a measuring instrument to ensure that the outer diameter of the thin-wall sealing sleeve (2) meets the required requirements; The thin-wall sealing sleeve (2) with an outer diameter less than the required size is removed from the machine body (1) for recycling and smelting, and the thin-wall sealing sleeve (2) with an outer diameter greater than the required size is turned to the required size by the turning machine tool.