A sleeve outer circle milling processing cylinder shaft clamping type cutting stabilizing device

Abstract

This utility model discloses a cylinder shaft clamping cutting stabilizing device for milling the outer diameter of a sleeve, including a frame, a slide, a slide table, a rotary chuck, a cutting tool, and a through-rod cylinder. The cylinder shaft of the through-rod cylinder runs through the cylinder body, forming two output shafts extending out of the cylinder body. One output shaft is fixed to the slide table, while the other output shaft is in a free state. A support rod is fixed to the end of the free output shaft of the through-rod cylinder, and a clamping cylinder is fixed to the support rod. A shaft support is provided at the end of the cylinder shaft of the clamping cylinder. This utility model drives the semi-cylindrical shaft support through the clamping cylinder to extend and fit against the free output shaft of the through-rod cylinder. The fit surface between the shaft support and the output shaft forms a constraint, limiting the axial slippage and radial runout of the output shaft, significantly reducing vibration interference during the milling of the outer diameter of the sleeve, ensuring accurate alignment of the cutting tool and the rotary chuck, and significantly improving key accuracy indicators such as the roundness and surface roughness of the outer diameter of the sleeve.

Description

Technical Field

[0001] This utility model relates to the field of sleeve production and processing technology, and more specifically to a cylinder shaft clamping cutting stabilizing device for sleeve outer circle milling. Background Technology

[0002] In the external milling process of sleeve-type parts, it is often necessary to complete subsequent machining operations such as external cylindrical cutting, truncated cone milling, and radial drilling. This type of machining has extremely high precision requirements. The core prerequisite is that the cutting tool and the rotary chuck must remain stable and stationary after moving relative to each other to the preset machining position. That is, either the rotary chuck moves the sleeve into position, or the cutting tool moves with the slide to align with the sleeve. Only when the positions of the two are fixed and there is no relative wobble can it be ensured that the cutting depth of the sleeve's outer surface is uniform, the roundness meets the standard, and the positional accuracy of processes such as drilling meets the requirements.

[0003] However, in existing sleeve milling equipment, the actuators (such as conventional cylinders and lead screws) that drive the cutting tool or rotary chuck generally suffer from the design flaw of "single-end drive and unconstrained free end". For example, when a single-output-shaft cylinder drives the slide to move the cutting tool, only one end of the cylinder shaft is connected to the slide, while the other end is suspended and free. When the cutting tool moves to the machining position and bears the cutting force, the free end of the cylinder is prone to radial runout due to the lack of effective support, which in turn causes the slide and cutting tool to wobble slightly. Similarly, if the rotary chuck is driven by a similar unconstrained drive component, the problem of chuck and sleeve wobble will also occur.

[0004] This shaking will directly cause the relative position between the cutting tool and the sleeve to deviate from the preset trajectory, resulting in quality problems such as unevenness of the outer circle cutting surface of the sleeve, out-of-tolerance accuracy of the frustum surface, and misalignment of the drilling position. This not only increases the scrap rate but also requires subsequent rework and repair, which seriously affects the processing efficiency. At the same time, long-term shaking will also accelerate the wear of drive components and cutting tools, shorten the service life of equipment, and increase production and maintenance costs. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned defects of the prior art and provide a cylinder shaft clamping cutting stabilizing device for sleeve external milling, which has a simple structure, strong compatibility, accurately solves the cutting vibration problem, improves machining accuracy, has high automation and coordination, and ensures machining efficiency and stability.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a cylinder shaft clamping cutting stabilizing device for sleeve external milling, comprising a frame, a slide block, a slide table, a rotary chuck, and a cutting tool. The cutting tool is fixed to the slide table via a cutting tool holder, and the slide table is slidably mounted on the slide block. Both the slide block and the rotary chuck are fixed to the frame. The device is characterized in that a through-rod cylinder is also fixed to the frame. The cylinder shaft of the through-rod cylinder extends through the cylinder body to form two output shafts extending outside the cylinder body. One output shaft is fixed to the slide table, and the other output shaft is in a free state. The free output shaft end of the through-rod cylinder has... A support rod is fixedly mounted, and a clamping cylinder is fixedly mounted on the support rod. The cylinder shaft end of the clamping cylinder is provided with a shaft support. The shaft support is a semi-cylindrical structure formed by cutting a round tube in half along the axial direction. Its axial ends and radial side are open, and the inner diameter of the shaft support is adapted to the outer diameter of the output shaft of the through rod cylinder in its free state. When the cutting tool moves to the rotary chuck for alignment, the clamping cylinder drives the shaft support to extend towards the output shaft of the through rod cylinder in its free state, so that the shaft support engages with the output shaft of the through rod cylinder in its free state. After the cutting is completed, the clamping cylinder drives the shaft support to reset, releasing the engagement with the output shaft of the through rod cylinder in its free state.

[0007] This invention utilizes a cylinder-driven semi-cylindrical shaft support to extend and engage with the free-state output shaft of a through-rod cylinder. The tight fit between the shaft support and the output shaft restricts axial slippage and radial runout, effectively preventing shaft wobbling during cutting due to single-end drive and lack of constraint at the free end in traditional through-rod cylinders. This significantly reduces vibration interference during sleeve outer diameter milling, ensures precise alignment of the cutting tool and rotary chuck, and substantially improves key precision indicators such as the roundness and surface roughness of the sleeve outer diameter.

[0008] Secondly, only a support rod, a clamping cylinder, and a shaft support are added to the end of the free-state output shaft of the through rod cylinder. There is no need to make major modifications to the original core components such as the frame, slide, and rotary chuck. The structure is compact, occupies little space, and can be flexibly adapted to different specifications of sleeve external milling equipment, reducing the cost of equipment modification and upgrade, and is highly practical.

[0009] Furthermore, the action of the clamping cylinder can be linked with the movement of the slide table driven by the through rod cylinder—when the cutting tool moves to the machining position, the shaft support automatically clamps and constrains; after the cutting is completed, the shaft support automatically resets, without affecting the reset of the slide table with the through rod cylinder and the next machining cycle. No manual intervention is required, which avoids the delay and error of manual operation, ensures the continuity and stability of the machining process, and improves the overall production efficiency.

[0010] Finally, a semi-cylindrical shaft support is used for contact constraint instead of rigid clamping. This effectively limits the radial runout of the output shaft while avoiding rigid compression damage to the outer wall of the output shaft. Furthermore, the inner diameter of the shaft support is matched with the outer diameter of the output shaft, and the contact surface is uniform, which can disperse the constraint stress, reduce the wear of the output shaft and shaft support, extend the service life of the core components of the device, and reduce the later maintenance costs.

[0011] Preferably, the frame is also provided with a feeding unit, which includes a stacking component for orderly stacking and outputting sleeves one by one, and a transfer component for taking out the sleeves output by the stacking component one by one and transferring them into a rotary chuck for individual processing.

[0012] This invention adds a feeding unit with a stacking component and a transfer component to the frame. The stacking component enables the orderly stacking and precise output of sleeves, avoiding positional deviations and collisions caused by manual feeding. The transfer component precisely transfers the sleeves one by one to the rotary chuck, ensuring the coaxiality of the sleeves and chuck and reducing the risk of cutting misalignment. At the same time, the entire unit automates the feeding process, significantly reducing labor costs and matching the pace of batch production, thereby improving both processing accuracy and overall processing efficiency.

[0013] Preferably, the material stacking assembly includes an inclined feeding plate with a pair of parallel guide rails. The distance between the two guide rails is adapted to the outer diameter of the sleeve, so as to limit the sleeve on both sides and guide it to slide down and be output one by one along the inclined direction of the feeding plate.

[0014] This invention utilizes an inclined feed plate in conjunction with a parallel guide rail with an appropriate outer diameter for the sleeve. On one hand, the inclined angle enables the sleeve to slide down automatically under gravity, allowing for individual output without additional drive components, simplifying the structure and reducing energy consumption. On the other hand, the limiting positions on both sides of the guide rail precisely constrain the downward trajectory of the sleeve, preventing it from shifting, flipping, or stacking during transport. This ensures that each sleeve enters the subsequent material transfer stage with a uniform posture, providing a stable pre-positioning guarantee for precise alignment with the rotary chuck and further reducing processing accuracy issues caused by sleeve transport posture deviations.

[0015] Preferably, of the two guide rails, one is a fixed rail fixedly connected to the feed plate, and the other is a movable rail slidably disposed on the feed plate; the feed plate has a plurality of parallel oblong holes, the length direction of the oblong holes is perpendicular to the length direction of the movable rail, and the movable rail is fixed to the feed plate by fixing bolts passing through the oblong holes.

[0016] This utility model features a "fixed + movable" combination design for the guide rail. With an oblong hole perpendicular to the length of the movable rail, the distance between the two rails can be flexibly adjusted by loosening the fixing bolts and sliding the movable rail along the oblong hole. This structure can adapt to the processing needs of sleeves with different outer diameters, eliminating the need for separate material stacking components for each size sleeve, significantly improving equipment versatility. Simultaneously, the cooperation between the oblong hole and the fixing bolts ensures the movable rail remains stable after adjustment, preventing displacement during sleeve transport. This balances adaptability and stability of the sleeve transport trajectory, further reducing equipment investment and debugging costs in multi-specification processing scenarios.

[0017] Preferably, the material transfer assembly includes a positioning groove correspondingly disposed below the feed plate; a first pull rod cylinder is provided on one side of the positioning groove, and a push shaft is fixedly connected to the cylinder shaft of the first pull rod cylinder; a second pull rod cylinder is provided on the other side of the positioning groove, and a receiving sleeve is fixedly connected to the cylinder shaft of the second pull rod cylinder. The inner diameter of the receiving sleeve is larger than the outer diameter of the sleeve, and the end away from the second pull rod cylinder is axially open, so that the push shaft of the first pull rod cylinder can push the sleeve into the receiving sleeve; the receiving sleeve and the second pull rod cylinder are connected together to a linkage seat, and the linkage seat is fixedly mounted on the cylinder shaft of a third pull rod cylinder; the first pull rod cylinder and the second pull rod cylinder are arranged in a straight line, while the third pull rod cylinder is arranged perpendicularly to both the first pull rod cylinder and the second pull rod cylinder, and the third pull rod cylinder is fixedly mounted on the frame.

[0018] This invention achieves precise and automated sleeve transfer through a collaborative structure of "three-rod cylinders + storage sleeve": First, the first rod cylinder, in conjunction with the groove positioning, stably pushes the sleeve into the storage sleeve of the second rod cylinder, preventing sleeve offset during the initial transfer; second, the open design and adaptable inner diameter of the storage sleeve ensure smooth entry and stable posture of the sleeve during temporary storage; finally, the third rod cylinder, perpendicularly distributed to the first two cylinders, drives the storage sleeve and sleeve to move precisely to the rotary chuck via a linkage seat, realizing a continuous "positioning-temporary storage-transfer" action, completely replacing manual handling. This avoids sleeve collisions caused by manual contact and ensures the accuracy of the transfer trajectory through the rigid transmission driven by the cylinder, further reducing the alignment deviation between the sleeve and the rotary chuck, and providing support for subsequent high-precision machining such as cutting and drilling from the feeding stage.

[0019] Beneficial effects: (1) Comprehensive protection of processing accuracy and reduction of scrap rate: The device constrains the free end of the drive component through the stabilizing mechanism to avoid relative shaking between the cutting tool and the sleeve during cutting. At the same time, the feeding unit's stacking component (adjustable slide rail) and transfer component (three cylinders working together) ensure accurate sleeve feeding and transfer. From the dual dimensions of "processing stability" and "accurate feeding", the device eliminates problems such as cutting unevenness and drilling deviation, significantly reducing scrap rate and rework cost.

[0020] (2) Improve equipment versatility and adaptability: The design of "fixed slide rail + movable slide rail" in the material stacking component, combined with the waist-shaped hole, allows for flexible adjustment of the slide rail spacing to adapt to sleeves with different outer diameters; there is no need to design a special feeding structure for a single specification sleeve, which greatly reduces the equipment replacement and debugging time in multi-specification processing scenarios and reduces production input.

[0021] (3) Achieve full-process automation and improve processing efficiency: From the orderly feeding of the material stacking component to the automatic connection of the material transfer component in "positioning-temporary storage-transfer", and then to the stabilizing mechanism to ensure accuracy during processing, the whole set of equipment replaces the traditional manual feeding and simple drive structure, reduces the manual intervention links, avoids manual operation errors, increases the processing volume per unit time, and reduces labor costs.

[0022] (4) Extend the service life of equipment and reduce maintenance costs: The stabilizing mechanism eliminates the extra wear caused by the shaking of the drive components, and the automated transfer of the feeding unit reduces the collision loss between the sleeve and the equipment components. Both aspects slow down the aging speed of core components such as cutting tools, cylinders, and chucks, reduce the frequency of equipment maintenance and replacement costs, and improve the overall production efficiency. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the clamping cutting stabilizing device of this utility model when it is not in operation; Figure 2 This is a schematic diagram of the working structure of the clamping cutting stabilizing device of this utility model; Figure 3 This is a schematic diagram of the feeding unit of this utility model.

[0024] In the diagram: 1-Frame, 2-Slide, 3-Slide table, 4-Rotary chuck, 5-Cutting tool holder, 6-Cutting tool, 7-Through rod cylinder, 8-Support rod, 9-Clamping cylinder, 10-Shaft support, 11-Material stacking assembly, 12-Material transfer assembly, 13-Feed plate, 14-Fixed slide rail, 15-Movable slide rail, 16-Oval hole, 17-Fixing bolt, 18-Landing groove, 19-First pull rod cylinder, 20-Push shaft, 21-Storage sleeve, 22-Second pull rod cylinder, 23-Linkage seat, 24-Third pull rod cylinder. Detailed Implementation

[0025] To make the technical means, creative features and objectives of this utility model easier to understand, the following describes this utility model in conjunction with specific embodiments.

[0026] Example: Figure 1 and Figure 2As shown, a cylinder shaft clamping cutting stabilizing device for sleeve external milling includes a frame 1, a slide 2, a slide table 3, a rotary chuck 4, and a cutting tool 6. The cutting tool 6 is fixed to the slide table 3 by a cutting tool holder 5. The slide table 3 is slidably mounted on the slide 2. The slide table 2 and the rotary chuck 4 are both fixed to the frame 1.

[0027] A through-rod cylinder 7 is also fixed on the frame 1. The cylinder shaft of the through-rod cylinder 7 passes through the cylinder body to form two output shafts extending out of the cylinder body. One output shaft is fixed to the slide table 3, and the other output shaft is in a free state. A support rod 8 is fixed on the end of the output shaft of the through-rod cylinder 7 in the free state. A clamping cylinder 9 is fixedly mounted on the support rod 8. A shaft support 10 is provided at the end of the cylinder shaft of the clamping cylinder 9. The shaft support 10 is a semi-cylindrical structure formed by cutting a round tube in half along the axial direction. Both ends of its axial direction and one side of its radial direction are open. The inner diameter of the shaft support is matched with the outer diameter of the output shaft of the through-rod cylinder 7 in the free state.

[0028] When the cutting tool 6 moves to the rotating chuck 4 for alignment, the clamping cylinder 9 drives the shaft support 10 to extend towards the output shaft of the through rod cylinder 7 in a free state, so that the shaft support 10 engages with the output shaft of the through rod cylinder 7 in a free state; when the cutting is completed, the clamping cylinder 9 drives the shaft support 10 to reset, releasing the engagement with the output shaft of the through rod cylinder 7 in a free state.

[0029] like Figure 3 As shown, the frame 1 is also equipped with a feeding unit, which includes a stacking component 11 for orderly stacking and outputting sleeves one by one, and a transfer component 12 for taking out the sleeves output by the stacking component one by one and transferring them into a rotary chuck to achieve individual processing.

[0030] The material stacking assembly 11 includes an inclined feed plate 13, on which a pair of parallel guide rails are provided, and the distance between the two guide rails is adapted to the outer diameter of the sleeve.

[0031] Of the two guide rails, one is a fixed rail 14 that is fixedly connected to the feed plate 13, and the other is a movable rail 15 that is slidably disposed on the feed plate 13. The feed plate 13 has three parallel oblong holes 16. The length direction of the oblong holes 16 is perpendicular to the length direction of the movable rail 15. The movable rail 15 is fixed to the feed plate 13 by fixing bolts 17 that pass through the oblong holes 16.

[0032] The material transfer assembly 12 includes a positioning groove 18 correspondingly disposed below the feed plate 13; a first pull rod cylinder 19 is provided on one side of the positioning groove 18, and a push shaft 20 is fixedly connected to the cylinder shaft of the first pull rod cylinder 19; a second pull rod cylinder 22 is provided on the other side of the positioning groove 18, and a receiving sleeve 21 is fixedly connected to the cylinder shaft of the second pull rod cylinder 22. The inner diameter of the receiving sleeve 21 is larger than the outer diameter of the sleeve, and the end away from the second pull rod cylinder is axially open to allow the first pull rod cylinder to transfer the material. The push shaft 20 of the first pull rod cylinder 19 pushes the sleeve into the receiving sleeve 21; the receiving sleeve 21 and the second pull rod cylinder 22 are connected to a linkage seat 23, which is fixedly mounted on the cylinder shaft of the third pull rod cylinder 24; the first pull rod cylinder 19 and the second pull rod cylinder 22 are arranged in a straight line, while the third pull rod cylinder 24 is perpendicular to both the first pull rod cylinder 19 and the second pull rod cylinder 22, and the third pull rod cylinder 24 is fixedly mounted on the frame.

[0033] Working process: (1) Sleeve stacking and orderly output: Place the sleeve to be processed into the inclined feed plate of the stacking assembly, and adjust the position of the movable slide rail according to the outer diameter of the sleeve. Loosen the fixing bolt in the waist-shaped hole, slide the movable slide rail along the waist-shaped hole to the appropriate spacing, and then lock the bolt again to ensure that sleeves of different specifications can be accurately limited by the slide rail. The sleeve slides down along the two slide rails by gravity and enters the lower positioning groove one by one. At this time, the side wall of the positioning groove forms a preliminary positioning for the sleeve to avoid deviation during the sliding process.

[0034] (2) Sleeve positioning and temporary storage: The sleeve in the groove triggers the action of the first pull rod cylinder. The cylinder shaft of the first pull rod cylinder drives the push shaft to extend. The push shaft pushes the sleeve stably along the groove axis. At the same time, the cylinder shaft of the second pull rod cylinder remains extended. The opening of the storage sleeve (inner diameter is larger than the outer diameter of the sleeve) at its end faces the direction of the push shaft. The push shaft pushes the sleeve smoothly into the storage sleeve. The inner wall of the storage sleeve forms a circumferential constraint on the sleeve, completing the temporary storage and posture fixation of the sleeve, and preventing shaking before transfer.

[0035] (3) The sleeve is accurately transferred to the chuck: The third tie rod cylinder (which is perpendicular to the first and second tie rod cylinders and is fixed to the frame by the cylinder support rod to ensure its own stable operation) is started, and its cylinder shaft drives the linkage seat to move along the preset trajectory; the linkage seat simultaneously pulls the second tie rod cylinder and the storage sleeve. During the process, the through rod structure of the linkage seat (if present) ensures that the second tie rod cylinder and the storage sleeve have no relative offset, and the temporarily stored sleeve is accurately transferred to the front of the rotary chuck.

[0036] (4) Sleeve loading and stabilization machining: The second pull rod cylinder is activated, pushing the storage sleeve to send the sleeve into the rotary chuck, and the chuck clamps the sleeve; then the slide of the cutting tool (or the component that drives the rotary chuck) is moved to the preset machining position. At this time, the clamping cylinder and the shaft support are activated to clamp and constrain the output shaft of the through rod cylinder to ensure that the output shaft of the through rod cylinder has no axial and radial runout; after the position is completely fixed, the cutting tool is activated to complete the external circle cutting, the round table milling or the radial drilling process; after the machining is completed, the clamping cylinder and the shaft support are released, each cylinder is reset, and the above process is repeated.

Claims

1. A cylinder-shaft clamping cutting stabilizing device for milling the outer diameter of a sleeve, comprising a frame, a slide block, a slide table, a rotary chuck, and a cutting tool, wherein the cutting tool is fixed to the slide table via a cutting tool holder, the slide table is slidably mounted on the slide block, and both the slide block and the rotary chuck are fixed to the frame, characterized in that... The frame is also fixed with a through-rod cylinder. The cylinder shaft of the through-rod cylinder runs through the cylinder body to form two output shafts extending out of the cylinder body. One output shaft is fixed to the slide table, and the other output shaft is in a free state. A support rod is fixed to the end of the output shaft of the through rod cylinder in a free state. A clamping cylinder is fixedly mounted on the support rod. A shaft support is provided at the end of the cylinder shaft of the clamping cylinder. The shaft support is a semi-cylindrical structure formed by cutting a round tube in half along the axial direction. Both ends of the shaft support and one radial side are open. The inner diameter of the shaft support is matched with the outer diameter of the output shaft of the through rod cylinder in a free state. When the cutting tool moves to the rotary chuck for alignment, the clamping cylinder drives the shaft support to extend towards the output shaft of the through rod cylinder in a free state, so that the shaft support engages with the output shaft of the through rod cylinder in a free state; when the cutting is completed, the clamping cylinder drives the shaft support to reset, releasing the engagement with the output shaft of the through rod cylinder in a free state.

2. The cylinder shaft holding type cutting stabilizing device for sleeve external cylindrical milling according to claim 1, characterized by The frame is also equipped with a feeding unit, which includes a stacking component for orderly stacking and outputting sleeves one by one, and a transfer component for taking out the sleeves output by the stacking component one by one and transferring them into a rotary chuck for individual processing.

3. The cylinder shaft clamping cutting stabilizing device for sleeve outer diameter milling according to claim 2, characterized in that, The material stacking assembly includes an inclined feed plate with a pair of parallel guide rails on it. The distance between the two guide rails is adapted to the outer diameter of the sleeve.

4. The cylinder shaft holding type cutting stabilizing device for sleeve external cylindrical milling according to claim 3, characterized by Of the two guide rails, one is a fixed rail that is fixedly connected to the feed plate, and the other is a movable rail that is slidably disposed on the feed plate. The feed plate has several parallel oblong holes, the length direction of which is perpendicular to the length direction of the movable rail. The movable rail is fixed to the feed plate by fixing bolts that pass through the oblong holes.

5. The cylinder shaft clamping cutting stabilizing device for sleeve outer diameter milling according to claim 3 or 4, characterized in that, The material transfer assembly includes a positioning groove correspondingly disposed below the feed plate; a first pull rod cylinder is provided on one side of the positioning groove, and a push shaft is fixedly connected to the cylinder shaft of the first pull rod cylinder; a second pull rod cylinder is provided on the other side of the positioning groove, and a receiving sleeve is fixedly connected to the cylinder shaft of the second pull rod cylinder. The inner diameter of the receiving sleeve is larger than the outer diameter of the sleeve, and the end away from the second pull rod cylinder is axially open, so that the push shaft of the first pull rod cylinder can push the sleeve into the receiving sleeve; the receiving sleeve and the second pull rod cylinder are connected together to a linkage seat, and the linkage seat is fixedly mounted on the cylinder shaft of a third pull rod cylinder; the first pull rod cylinder and the second pull rod cylinder are arranged in a straight line, while the third pull rod cylinder is arranged perpendicularly to both the first pull rod cylinder and the second pull rod cylinder, and the third pull rod cylinder is fixedly mounted on the frame.

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