A dismounting sleeve vertical clamping tool
By using a positioning post and a screw and nut structure with screw-in connection, the problem of low assembly efficiency in traditional clamping mechanisms is solved, enabling efficient and precise processing of the unloading sleeve and ensuring stability and safety during the processing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINZHOU JT RAILWAY MASCH CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-09
Smart Images
Figure CN224333987U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining technology, and more specifically to a vertical clamping fixture for unloading sleeves. Background Technology
[0002] In the field of machining, especially for workpieces like withdrawal sleeves, high-precision positioning and reliable clamping devices are required. Withdrawal sleeves are complex in shape, heavy, require high precision, and have strict quality indicators. Under the high requirements of materials, performance indicators, and quality, the structural precision requirements are also high. Therefore, the geometric accuracy requirements of each individual component are high, and they are prone to deformation under the action of cutting forces and clamping forces during the machining process.
[0003] Traditional unloading sleeve processing may employ simple positioning and clamping methods, such as pressure plate clamping mechanisms. This method is one of the most commonly used positioning and clamping methods in machining equipment and is widely applied. However, the commonly used clamping mechanisms have low assembly efficiency and are inflexible in disassembly and assembly, which seriously affects processing efficiency in batch production. With the increasing requirements for machining accuracy and the trend towards automated machining, this traditional processing method can no longer meet the needs of efficient and high-precision unloading sleeve processing.
[0004] Therefore, how to provide a vertical machining fixture with a clamping mechanism that allows for easy installation, compression, and disassembly of the pressure plate is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0005] In view of this, the present invention provides a vertical clamping fixture for the unloading sleeve. The unloading sleeve is positioned by setting a positioning post, and the clamping mechanism can be quickly installed by screwing in a screw. The clamping plate is driven by a nut to clamp the unloading sleeve, thereby solving the problems of low assembly efficiency and inflexible disassembly and assembly of the clamping mechanism in the prior art.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A vertical clamping fixture for unloading sleeves includes:
[0008] A machining platform, which is rotatably mounted on a machining lathe, and the unloading sleeve is arranged on the machining platform;
[0009] Positioning posts, wherein there are multiple positioning posts, all of which are vertically and detachably installed on the processing platform. The multiple positioning posts are arranged at intervals around the outer circumferential wall of the unloading sleeve. Each positioning post is provided with a positioning plate at its top that can abut against the top side wall of the unloading sleeve.
[0010] A connecting seat is fixed on the processing platform and arranged axially corresponding to the unloading sleeve. A screw-in groove is provided on the top of the connecting seat along the axial direction of the unloading sleeve.
[0011] A clamping mechanism includes a screw, a connecting block, a clamping plate, and a nut. The screw is vertically arranged on the processing platform and located above the connecting seat. The connecting block is fixed to the bottom of the screw, and its horizontal cross-section matches the groove cross-section of the screw-in slot, so that the connecting block is screwed into the screw-in slot. The clamping plate is slidably mounted on the body of the screw, and the plate surface of the clamping plate is parallel to the upper plate surface of the processing platform and located above the unloading sleeve. The nut is screwed onto the screw, and its lower end face abuts against the upper plate surface of the clamping plate, so as to drive the clamping plate to move downward along the axial direction of the screw to clamp the unloading sleeve.
[0012] According to the above technical solution, this utility model discloses a vertical clamping fixture for a retraction sleeve. First, the retraction sleeve is placed at the center of the processing platform. Positioning posts are spaced apart around the outer circumference of the retraction sleeve. The positioning plate at the top of the positioning posts abuts against the top side wall of the retraction sleeve, thereby positioning the outer circumference of the retraction sleeve and determining its radial position. Then, the axial position of the retraction sleeve is clamped. First, the clamping mechanism is installed. The first screw is manipulated to drive the connecting block into the screw-in slot and further downwards into the connecting seat, where it is screwed into the screw-in slot within the connecting seat, connecting the first screw to the connecting seat. The clamping plate is slidably mounted on the rod of the first screw and positioned above the retraction sleeve. Then, screw nut one onto screw one and tighten nut one downwards so that the lower end face of nut one abuts against the upper surface of the pressure plate. Continue tightening and drive the pressure plate to move downwards along the axial direction of screw one, thereby pressing the release sleeve and completing the axial pressing and fixing of the release sleeve. After that, remove the positioning post and rotate the release sleeve and the processing platform together on the processing lathe to process the outer peripheral wall of the release sleeve. After processing, screw one can be rotated in the opposite direction to make screw one drive the connecting block to unscrew out of the screw-in slot and pull it out of the screw-in slot, completing the quick disassembly process of the pressure plate. This makes it easy to remove the processed release sleeve, then replace the release sleeve to be processed, and repeat the installation process of the pressing mechanism to press and process again. The radial positioning of the ejector sleeve can be achieved through the positioning pin, which facilitates the clamping mechanism to clamp the ejector sleeve and complete the axial positioning. It is also equipped with a connecting seat and connecting block with a screw-in slot, which facilitates the quick connection and installation of the screw and the connecting seat, thereby improving the replacement efficiency of the ejector sleeve and achieving efficient and high-precision machining of the ejector sleeve.
[0013] Furthermore, each set of positioning columns includes a column, a second screw, and a second nut. The column and the second screw are arranged at intervals and are both vertically installed on the processing platform. One end of the positioning plate is hinged to the top of the column, and the other end has a through hole corresponding to the second screw. The rod of the second screw passes through the through hole. The second nut is screwed onto the second screw, and its lower end face abuts against the upper surface of the positioning plate to drive the positioning plate to squeeze and limit the unloading sleeve.
[0014] The beneficial effects of adopting the above technical solution are: the positioning plate is driven by screw two and nut two, and can be flexibly adjusted according to the outer circumference of the unloading sleeve. The tightness of nut two on screw two can accurately control the degree of compression of the unloading sleeve by the positioning plate, thereby achieving precise positioning of the outer circumference of the unloading sleeve and effectively improving the radial and axial positional accuracy of the unloading sleeve.
[0015] Furthermore, a lower pressure plate and a push plate are integrally provided on the side of the positioning plate near the outer peripheral wall of the unloading sleeve. The lower end face of the lower pressure plate is parallel to the top face of the unloading sleeve. The push plate is vertically fixed on the lower plate surface of the lower pressure plate. The push plate is an arc-shaped plate, and its arc-shaped side wall surface matches the outer circumferential side wall of the unloading sleeve to squeeze and position the unloading sleeve in the axial and radial directions.
[0016] The beneficial effects of adopting the above technical solution are as follows: the lower end face of the pressure plate is parallel to the top end face of the ejection sleeve, which compresses and positions the ejection sleeve axially, restricting its axial movement; the push plate is an arc-shaped plate, and its arc-shaped sidewall matches the circumferential sidewall of the ejection sleeve, which compresses and positions the ejection sleeve radially, restricting its radial displacement. This precise axial and radial positioning ensures that the ejection sleeve maintains a precise position throughout the processing, effectively improving processing accuracy.
[0017] Furthermore, the groove of the screw-in slot is strip-shaped, and symmetrical stop protrusions are fixed inside the screw-in slot so that the connecting block is blocked and limited after rotation. The screw-in direction of the connecting block is the same as the spiral rotation direction of the nut moving downward along the axial direction of the screw, so that when the nut is screwed downward, the connecting block is in a snap-fit state.
[0018] The beneficial effects of adopting the above technical solution are as follows: the strip-shaped groove facilitates the smooth insertion of the connecting block into the screw-in slot, while the stop protrusion limits the connecting block, preventing it from rotating excessively after being screwed in, thereby ensuring a tight fit between the connecting block and the screw-in slot and enhancing the stability of the connection; furthermore, the screwing direction of the connecting block is consistent with the rotation direction of the nut moving downward along the screw shaft, so when the operator tightens the nut and presses the release sleeve, they only need to rotate in a uniform direction without additional adjustment of the position of the connecting block, ensuring the accuracy and consistency of the pressing operation, and eliminating the need to consider the orientation and fit of the components, simplifying the operation process and improving work efficiency.
[0019] Furthermore, there are multiple screws arranged at intervals on the processing platform, each screw passing through the clamping plate, and there are multiple nuts that are screwed one-to-one with each of the multiple screws, and each nut is located above the processing platform.
[0020] The beneficial effects of adopting the above technical solution are as follows: multiple screws and nuts can work together to apply downward pressure to the clamping plate simultaneously, so that the clamping plate can clamp the release sleeve more evenly, avoiding uneven clamping force caused by single-point clamping, reducing deformation and displacement of the release sleeve during processing, and improving processing accuracy and quality; even if there is vibration or other external force interference during processing, it can ensure that the release sleeve always maintains a stable position, reducing the risk of processing errors caused by insufficient clamping force.
[0021] Furthermore, the clamping mechanism also includes a housing and a control gear. The housing is slidably sleeved on the plurality of screws. A gear is fixedly sleeved on the outer periphery of each nut and the nut rotates together with the gear. The control gear is rotatably installed in the housing and simultaneously meshes with the plurality of gears. A control lever is fixed along the axis of the control gear and the control lever extends upward to extend out of the housing.
[0022] The beneficial effects of adopting the above technical solution are as follows: By simultaneously driving multiple nuts to rotate through the control gear, multiple screws can be pressed down synchronously, allowing the clamping plate to apply pressure evenly to the release sleeve. This effectively avoids uneven clamping force caused by single-point clamping, improves the stability of the release sleeve during processing, reduces the risk of deformation, and thus improves processing accuracy. Operators only need to rotate the control gear with the control lever to simultaneously control the tightening or loosening of multiple nuts, eliminating the need to operate each nut individually, greatly saving clamping and disassembly time and improving work efficiency. It also avoids the safety risks such as finger pinching that may occur from manually tightening the nuts, improving operational safety.
[0023] Furthermore, the clamping mechanism also includes an elastic reset mechanism, which includes:
[0024] A limiting pin is fixed to the outer peripheral wall of the screw along the radial direction of the screw, and the limiting pin is located below the clamping plate and spaced apart from it;
[0025] A reset spring is slidably sleeved on the screw and its two ends abut against the limiting pin and the lower plate surface of the clamping plate, respectively.
[0026] The beneficial effects of adopting the above technical solution are as follows: During the clamping process, the return spring can absorb part of the impact force, reduce the instantaneous impact when the clamping plate contacts the release sleeve, avoid deformation or damage to the release sleeve due to excessive impact force, and improve the integrity and processing quality of the release sleeve; in addition, the setting of the return spring allows the clamping plate to move upward automatically after the nut is loosened, which makes it convenient for operators to quickly loosen the release sleeve and improve the efficiency of clamping and disassembly.
[0027] Furthermore, a circular protrusion is coaxially fixed on the processing platform corresponding to the axis of the unloading sleeve, and the outer circumferential sidewall of the circular protrusion can match and abut against the inner circumferential sidewall of the unloading sleeve.
[0028] The beneficial effects of adopting the above technical solution are: the outer circumferential sidewall of the circular protrusion fits tightly with the inner circumferential sidewall of the unloading sleeve, providing a stable support point for the unloading sleeve, increasing the radial stability of the unloading sleeve during the processing, reducing the radial displacement of the unloading sleeve caused by external forces during the processing, and improving the stability of the processing.
[0029] Furthermore, a positioning pin is vertically fixed on the outer circumferential sidewall of the processing platform near the circular protrusion, and a positioning hole is opened on the bottom end face of the unloading sleeve sidewall, and the positioning pin can be inserted into the positioning hole accordingly.
[0030] The beneficial effects of adopting the above technical solution are: the cooperation between the positioning pin and the positioning hole provides clear alignment guidance for the installation of the withdrawal sleeve, enabling operators to quickly and accurately install the withdrawal sleeve into the designated position, reducing installation time and improving production efficiency; at the same time, the insertion of the positioning pin into the positioning hole can restrict the circumferential rotation of the withdrawal sleeve, ensuring the positional accuracy of the withdrawal sleeve in the circumferential direction and avoiding machining errors caused by circumferential displacement. Especially when circumferential machining operations are required, it can ensure the accuracy and consistency of machining.
[0031] Furthermore, the processing platform is provided with grooves spaced apart from the contact position between the unloading sleeve and its upper plate surface.
[0032] The beneficial effects of adopting the above technical solution are: when the unloading sleeve is pressed down, reducing the contact area will increase the pressure per unit area, thereby forming a stronger clamping force at the contact point between the unloading sleeve and the processing platform, which helps to fix the unloading sleeve more firmly on the processing platform, prevents the unloading sleeve from shifting due to force during processing, and improves the stability and accuracy of processing. Attached Figure Description
[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0034] Figure 1 This is a three-dimensional structural diagram of the vertical clamping fixture for unloading sleeves of this utility model in the assembly state.
[0035] Figure 2 for Figure 1 A sectional view.
[0036] Figure 3 This is a three-dimensional structural diagram of the vertical clamping fixture for unloading sleeves of this utility model in the processing state.
[0037] Figure 4 This is a three-dimensional structural diagram of the clamping mechanism of this utility model.
[0038] Figure 5 This is a cross-sectional view of the housing of this utility model.
[0039] Figure 6 This is a three-dimensional structural diagram of the processing platform of this utility model.
[0040] Figure 7 This is a three-dimensional structural diagram of the retraction sleeve of this utility model.
[0041] Figure 8 This is a three-dimensional structural diagram of the connector of this utility model.
[0042] Figure 9 for Figure 8 A sectional view.
[0043] Among them, 100-removal sleeve, 101-positioning hole, 1-processing platform, 11-circular protrusion, 12-positioning pin, 13-groove, 2-positioning plate, 21-lower pressure plate, 22-push plate, 3-positioning column, 31-column, 32-screw two, 33-nut two, 4-connecting seat, 41-screw-in slot, 411-stop protrusion, 5-pressing mechanism, 51-screw one, 52-connecting block, 53-pressing plate, 54-nut one, 55-housing, 56-control gear, 561-operating lever, 57-elastic reset mechanism, 571-limit pin, 572-reset spring. Detailed Implementation
[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0045] This utility model discloses a vertical clamping fixture for clamping and fixing a removable sleeve 100. It includes a machining platform 1 rotatably mounted on a lathe, on which the removable sleeve 100 is arranged. Multiple positioning posts 3 are detachably and vertically mounted on the machining platform 1 corresponding to the circumference of the removable sleeve 100. These positioning posts 3 are spaced apart around the outer circumferential wall of the removable sleeve 100, and each positioning post 3 has a positioning plate 2 at its top that abuts against the top side wall of the removable sleeve 100. A connecting seat 4 is arranged on the machining platform 1 along the axis corresponding to the removable sleeve 100, and a screw-in groove 41 is formed at the top of the connecting seat 4 downwards along the axial direction of the removable sleeve 100. A clamping mechanism is provided above the body of the removable sleeve 100. 5. The clamping mechanism 5 includes a screw 51, a connecting block 52, a clamping plate 53, and a nut 54. The screw 51 is vertically arranged on the processing platform 1 and located above the connecting seat 4. The connecting block 52 is fixed to the bottom of the screw 51, and its horizontal cross-section matches the groove cross-section of the screw-in slot 41 so that the connecting block 52 is screwed into the screw-in slot 41. The clamping plate 53 is slidably mounted on the rod body of the screw 51. The plate surface of the clamping plate 53 is parallel to the upper plate surface of the processing platform 1 and located above the unloading sleeve 100. The nut 54 is screwed onto the screw 51, and its lower end face abuts against the upper plate surface of the clamping plate 53 to drive the clamping plate 53 to move downward along the axial direction of the screw 51 to clamp the unloading sleeve 100.
[0046] Specifically, the clamping plate 53 in the clamping mechanism 5 is cross-shaped, and multiple through holes are formed on its upper and lower surfaces. Compared with solid rectangular or other complex shaped clamping plates, the cross-shaped clamping plate 53 removes material from some non-critical areas, significantly reducing the weight of the clamping plate itself. This reduces the weight burden of the entire clamping mechanism on the processing platform, helping to improve the overall performance of the equipment. Furthermore, the lighter clamping plate 53 has less inertia during up-and-down movement and clamping, resulting in faster response speed, more flexible operation, and easier rapid clamping and loosening, thus improving processing efficiency.
[0047] In a specific embodiment of the positioning pins 3 in this utility model, each set of positioning pins 3 includes a column 31, a second screw 32, and a second nut 33. The column 31 and the second screw 32 are arranged at intervals and are both vertically installed on the processing platform 1. One end of the positioning plate 2 is hinged to the top of the column 31, and the other end has a through hole corresponding to the second screw 32. The rod of the second screw 32 passes through the through hole. The second nut 33 is screwed onto the second screw 32, and its lower end face abuts against the upper plate surface of the positioning plate 2 to drive the positioning plate 2 to compress and limit the unloading sleeve 100. The positioning plate 2 is driven by the second screw 32 and the second nut 33, and can be flexibly adjusted according to the outer circumference of the unloading sleeve 100. The tightness of the second nut 33 on the second screw 32 can accurately control the degree of compression of the unloading sleeve 100 by the positioning plate 2, thereby achieving precise limitation of the outer circumference of the unloading sleeve 100 and effectively improving the radial and axial positional accuracy of the unloading sleeve 100.
[0048] Specifically, this invention employs four positioning posts 3, which are respectively arranged at the four corners of the processing platform 1. This allows for multi-point, uniform compression and limiting of the outer circumference of the unloading sleeve 100, effectively improving the radial and axial positioning accuracy of the unloading sleeve 100. This ensures the unloading sleeve 100 maintains a stable position throughout the processing, reducing tilting or offset of the unloading sleeve 100 caused by single-point or local support, thus improving processing accuracy. Furthermore, the four positioning posts 3 are conveniently located at the four corners, allowing operators easy access to each post during clamping and disassembly operations, eliminating the need to operate in confined spaces and reducing operational difficulty and labor intensity. This layout also facilitates the maintenance and replacement of the positioning posts, improving the maintainability of the equipment.
[0049] In the above embodiment, to improve the positioning effect of the positioning plate 2, a lower pressure plate 21 and a push plate 22 are integrally provided on the side of the positioning plate 2 near the outer peripheral wall of the unloading sleeve 100. The lower end face of the lower pressure plate 21 is parallel to the top end face of the unloading sleeve 100, and the push plate 22 is vertically fixed on the lower plate surface of the lower pressure plate 21. The push plate 22 is an arc-shaped plate, and its arc-shaped side wall matches the outer circumferential side wall of the unloading sleeve 100 to press and position the unloading sleeve 100 axially and radially. The lower end face of the lower pressure plate 21 is parallel to the top end face of the unloading sleeve 100, pressing and positioning the unloading sleeve 100 axially and restricting the axial movement of the unloading sleeve 100; the push plate 22 is an arc-shaped plate, and its arc-shaped side wall matches the circumferential side wall of the unloading sleeve 100, pressing and positioning the unloading sleeve 100 radially and restricting the radial displacement of the unloading sleeve 100. Precise axial and radial positioning ensures that the ejector sleeve 100 maintains a precise position throughout the machining process, effectively improving machining accuracy.
[0050] In a specific embodiment of the screw-in groove 41 in this utility model, the groove opening of the screw-in groove 41 is strip-shaped, and symmetrical stop protrusions 411 are fixed inside the screw-in groove 41 so that the connecting block 52 is blocked and limited after rotation. The screw-in direction of the connecting block 52 is the same as the spiral rotation direction of the nut 54 moving downward along the axial direction of the screw 51, so that when the nut 54 is screwed downward, the connecting block 52 is in a snap-fit state. The slotted opening facilitates the smooth insertion of the connecting block into the screw-in groove 41, while the stop protrusion 411 limits the connecting block 52, preventing it from rotating excessively after being screwed in. This ensures a tight fit between the connecting block and the screw-in groove 41, enhancing the stability of the connection. Furthermore, the screwing direction of the connecting block 52 is consistent with the rotation direction of the nut 54 as it moves downward along the axial direction of the screw 51. When tightening the nut 51 to press the release sleeve, the operator only needs to rotate in the same direction without additional adjustment of the connecting block's position. This ensures the accuracy and consistency of the pressing operation, and eliminates the need to consider the orientation and fit of the components, simplifying the operation process and improving work efficiency.
[0051] Specifically, when nut 54 is screwed downwards onto screw 51, nut 54 rotates clockwise. The stop protrusion 411 in the screw-in groove 41 is centrally symmetrically arranged relative to the axis of the groove opening, and a screw-in trajectory is reserved in the clockwise direction corresponding to the groove opening. This allows connecting block 52 to rotate clockwise along this trajectory when screwed into it, so that when the operator rotates nut 54 clockwise, they can simultaneously rotate connecting block 52 and screw it in and lock it in. Afterwards, as nut 54 continues to rotate, connecting block 52 and screw... The insert slot 41 is in a locked position. When the removal sleeve 100 needs to be replaced, the nut 54 is loosened and rotated counterclockwise at the same time, so that the connecting block 52 is simultaneously rotated counterclockwise out of the insert slot 41. The clamping mechanism 5 can be removed as a whole and the removal sleeve can be replaced directly. Compared with the traditional method of directly removing the pressure plate from the screw after unscrewing the nut, this method is faster and does not require repeated installation and disassembly of the nut and pressure plate, thus improving the efficiency of replacing the removal sleeve 100.
[0052] In a specific embodiment of the clamping mechanism 5 in this utility model, to improve the clamping force, multiple screws 51 are arranged at intervals on the processing platform 1. Each screw 51 passes through the clamping plate 53, and multiple nuts 54 are screwed to each screw 51 in a one-to-one correspondence, with each nut 54 located above the processing platform. The cooperation of multiple screws 51 and nuts 54 can simultaneously apply downward pressure to the clamping plate 53, enabling the clamping plate 53 to clamp the unloading sleeve 100 more evenly, avoiding uneven clamping force caused by single-point clamping, reducing deformation and displacement of the unloading sleeve 100 during processing, and improving processing accuracy and quality. Even if there is vibration or other external force interference during processing, it can ensure that the unloading sleeve 100 always maintains a stable position, reducing the risk of processing errors caused by insufficient clamping force.
[0053] In another embodiment of the clamping mechanism 5 of this utility model, for ease of operation, the clamping mechanism 5 further includes a housing 55 and a control gear 56. The housing 55 is slidably sleeved on a plurality of screws 51. A gear is fixedly sleeved on the outer periphery of each nut 54, and the nut 54 rotates together with the gear. The control gear 56 is rotatably installed inside the housing 55 and simultaneously meshes with a plurality of gears. A control lever 561 is fixed along the axis of the control gear 56, and the control lever 561 extends upward to extend out of the housing 55. By simultaneously driving multiple nuts 54 to rotate through the gear 56, multiple screws 51 can be pressed down synchronously, allowing the clamping plate 53 to apply pressure evenly to the unloading sleeve 100. This effectively avoids uneven clamping force caused by single-point clamping, improves the stability of the unloading sleeve 100 during processing, reduces the risk of deformation, and thus improves processing accuracy. Operators only need to rotate the gear 56 through the lever 561 to simultaneously control the tightening or loosening of multiple nuts 54, eliminating the need to operate each nut 54 individually. This greatly saves clamping and disassembly time and improves work efficiency. It also avoids the safety risks such as finger pinching that may occur from manually tightening the nuts 54, improving operational safety.
[0054] Specifically, this utility model uses two sets of parallel screws and nuts arranged at intervals. External gears are coaxially fixed on both nuts, and the control gear 56 is installed on the center line between the two nuts, and the control gear 56 meshes with the external gears of the two nuts.
[0055] In another embodiment of the clamping mechanism 5 of this utility model, for ease of disassembly, the clamping mechanism 5 further includes an elastic reset mechanism 57, wherein the elastic reset mechanism 57 includes a limiting pin 571 and a reset spring 572. The limiting pin 571 is fixed radially to the outer peripheral wall of the screw 51 and is located below and spaced apart from the clamping plate 53. The reset spring 572 is slidably sleeved on the screw 51 and its two ends abut against the limiting pin 571 and the lower plate surface of the clamping plate 53, respectively. During the clamping process, the reset spring 572 can absorb part of the impact force, reduce the instantaneous impact when the clamping plate 53 contacts the release sleeve 100, avoid deformation or damage to the release sleeve 100 due to excessive impact force, and improve the integrity and processing quality of the release sleeve 100. Furthermore, the setting of the reset spring 572 allows the clamping plate 53 to move automatically upward after the nut 54 is loosened, which facilitates the operator to quickly release the release sleeve 100 and improves the efficiency of clamping and disassembly.
[0056] In other embodiments of this utility model, to facilitate positioning of the removable sleeve 100 during installation, a circular protrusion 11 is coaxially fixed on the processing platform 1 corresponding to the axis of the removable sleeve 100, and the outer circumferential sidewall of the circular protrusion 11 can match and abut against the inner circumferential sidewall of the removable sleeve 100. The tight fit between the outer circumferential sidewall of the circular protrusion 11 and the inner circumferential sidewall of the removable sleeve 100 provides a stable support point for the removable sleeve 100, which not only facilitates its bottom docking and positioning, but also increases the radial stability of the removable sleeve 100 during processing, reduces the radial displacement of the removable sleeve 100 caused by external forces during processing, and improves the stability of the processing process.
[0057] In the above embodiments, to further improve the convenience of positioning the unloading sleeve 100, a positioning pin 12 is vertically fixed on the outer circumferential sidewall of the processing platform 1 near the circular protrusion 11. A positioning hole 101 is provided on the bottom end face of the sidewall of the unloading sleeve 100, and the positioning pin 12 can be inserted into the positioning hole 101 accordingly. The cooperation between the positioning pin 12 and the positioning hole 101 provides a clear alignment guide for the installation of the unloading sleeve 100, allowing operators to quickly and accurately install the unloading sleeve 100 to the designated position, reducing installation time and improving production efficiency. At the same time, the insertion of the positioning pin 12 into the positioning hole 101 can restrict the circumferential rotation of the unloading sleeve 100, ensuring the positional accuracy of the unloading sleeve 100 in the circumferential direction and avoiding processing errors caused by circumferential displacement. Especially when circumferential processing operations are required, it can ensure the accuracy and consistency of processing.
[0058] In another embodiment of this utility model, a groove 13 is provided on the processing platform 1 at intervals corresponding to the contact position between the retraction sleeve 100 and its upper plate surface. When the retraction sleeve 100 is pressed down, the reduced contact area will increase the pressure per unit area, thereby forming a stronger clamping force at the contact point between the retraction sleeve 100 and the processing platform 1. This helps to fix the retraction sleeve 100 more firmly on the processing platform 1, preventing the retraction sleeve 100 from shifting due to force during processing, and improving the stability and accuracy of processing.
[0059] The working principle of the vertical clamping fixture for unloading sleeves of this utility model is as follows:
[0060] First, place the circular protrusion corresponding to the withdrawal sleeve and the positioning pin corresponding to the positioning hole at the bottom of the sleeve at the center of the processing platform to complete the initial positioning. Then, arrange multiple positioning pins at intervals around the outer circumference of the withdrawal sleeve on the processing platform. The lower pressure plate and push plate of the positioning plate at the top of the positioning pin abut against the top and side wall of the outer edge of the withdrawal sleeve, respectively, thereby repositioning the outer circumference of the withdrawal sleeve axially and radially. Then, press the axial position of the withdrawal sleeve. First, install the pressing mechanism directly as a whole. Control the screw one to drive the connecting block into the screw-in slot and insert it downwards. Then, control the control lever to rotate clockwise, causing the nut one to rotate on the screw. Since the connecting block is not engaged, the screw one will also rotate with the nut one first, causing the connecting block to rotate. The connecting block also rotates and screws in to lock, then the screw is locked in place. Continue rotating the operating lever, and the lower end face of the nut pushes the upper plate of the clamping plate, driving the clamping plate to move downward along the axis of the screw until it clamps the release sleeve, completing the axial clamping and fixing of the release sleeve. Due to the circular protrusion and positioning pin, the positioning pin can then be removed, and the release sleeve can be rotated together with the processing platform on the machining lathe to process the outer peripheral wall of the release sleeve. After processing, the screw can be rotated in the opposite direction to make the connecting block screw out of the screw-in slot and pull out of the screw-in slot, completing the quick disassembly process of the clamping plate. This allows for easy removal of the processed release sleeve, and then replacement of the release sleeve to be processed. The installation process of the clamping mechanism can be repeated, and clamping and processing can be performed again.
[0061] Therefore, this vertical clamping fixture can achieve radial positioning of the unloading sleeve through the positioning pin, and can facilitate the clamping mechanism to clamp the unloading sleeve and complete the axial positioning. It is also equipped with a connecting seat and connecting block with screw-in slots, which can facilitate the quick connection and installation of the screw and the connecting seat, thereby improving the replacement efficiency of the unloading sleeve and achieving efficient and high-precision machining of the unloading sleeve.
[0062] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.
[0063] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A vertical clamping fixture for unloading sleeves, characterized in that, include: A machining platform (1) is rotatably mounted on a machining lathe, and the unloading sleeve (100) is arranged on the machining platform (1); Positioning posts (3), there are multiple positioning posts (3) and they are all vertically and detachably installed on the processing platform (1). The multiple positioning posts (3) are arranged at intervals around the outer circumferential wall of the unloading sleeve (100). Each positioning post (3) is provided with a positioning plate (2) at the top that can abut against the top side wall of the unloading sleeve (100). Connecting seat (4), the connecting seat (4) is fixed on the processing platform (1) and is arranged axially corresponding to the unloading sleeve (100). The top of the connecting seat (4) is provided with a screw-in groove (41) along the axial direction of the unloading sleeve (100). A clamping mechanism (5) includes a screw (51), a connecting block (52), a clamping plate (53), and a nut (54). The screw (51) is vertically arranged on the processing platform (1) and located above the connecting seat (4). The connecting block (52) is fixed to the bottom of the screw (51), and its horizontal cross-section matches the groove cross-section of the screw-in slot (41) so that the connecting block (52) is screwed into and clamped in the screw-in slot (41). 1) Inside; the clamping plate (53) is slidably mounted on the rod body of the screw (51), the plate surface of the clamping plate (53) is parallel to the upper plate surface of the processing platform (1) and located above the unloading sleeve (100), the nut (54) is screwed onto the screw (51) and its lower end face abuts against the upper plate surface of the clamping plate (53) to drive the clamping plate (53) to move downward along the axial direction of the screw (51) to press the unloading sleeve (100).
2. The vertical clamping fixture for unloading sleeves according to claim 1, characterized in that, Each of the positioning columns (3) includes a column (31), a screw (32) and a nut (33). The column (31) and the screw (32) are arranged at intervals and are both vertically installed on the processing platform (1). One end of the positioning plate (2) is hinged to the top of the column (31), and the other end is provided with a through hole corresponding to the screw (32). The rod of the screw (32) passes through the through hole. The nut (33) is screwed onto the screw (32) and its lower end face abuts against the upper plate surface of the positioning plate (2) to drive the positioning plate (2) to squeeze and limit the unloading sleeve (100).
3. The vertical clamping fixture for unloading sleeves according to claim 2, characterized in that, The positioning plate (2) is integrally provided with a lower pressure plate (21) and a push plate (22) on one side of the outer peripheral wall of the unloading sleeve (100). The lower end face of the lower pressure plate (21) is parallel to the top end face of the unloading sleeve (100). The push plate (22) is vertically fixed on the lower plate surface of the lower pressure plate (21). The push plate (22) is an arc-shaped plate, and its arc-shaped side wall surface matches the outer circumferential side wall of the unloading sleeve (100) to squeeze and position the unloading sleeve (100) in the axial and radial directions.
4. The vertical clamping fixture for unloading sleeves according to claim 1, characterized in that, The groove of the screw-in slot (41) is strip-shaped. The screw-in slot (41) is symmetrically fixed with stop protrusions (411) so that the connecting block (52) is blocked and limited after rotation. The screw-in direction of the connecting block (52) is the same as the spiral rotation direction of the nut (54) moving downward along the axial direction of the screw (51) so that when the nut (54) is screwed downward, the connecting block (52) is in a snap-fit state.
5. The vertical clamping fixture for unloading sleeves according to claim 1, characterized in that, The screws (51) are multiple and spaced apart on the processing platform (1). Each screw (51) passes through the clamping plate (53). The nuts (54) are multiple and screwed one-to-one with each screw (51). Each nut (54) is located above the processing platform.
6. The vertical clamping fixture for unloading sleeves according to claim 5, characterized in that, The clamping mechanism (5) further includes a housing (55) and a control gear (56). The housing (55) is slidably sleeved on a plurality of screws (51). A gear is fixedly sleeved on the outer periphery of each nut (54), and the nut (54) rotates together with the gear. The control gear (56) is rotatably installed in the housing (55) and simultaneously meshes with a plurality of gears. A control lever (561) is fixed along the axis of the control gear (56), and the control lever (561) extends upward to protrude from the housing (55).
7. The vertical clamping fixture for unloading sleeves according to claim 1, characterized in that, The clamping mechanism (5) further includes an elastic reset mechanism (57), which includes: A limiting pin (571) is fixed on the outer peripheral wall of the screw (51) along the radial direction of the screw (51), and the limiting pin (571) is located below the clamping plate (53) and spaced apart from it. A reset spring (572) is slidably sleeved on the screw (51) and its two ends abut against the lower plate surface of the limiting pin (571) and the pressing plate (53), respectively.
8. The vertical clamping fixture for unloading sleeves according to claim 1, characterized in that, A circular protrusion (11) is fixed coaxially on the processing platform (1) corresponding to the axis of the unloading sleeve (100), and the outer circumferential sidewall of the circular protrusion (11) can match and abut against the inner circumferential sidewall of the unloading sleeve (100).
9. The vertical clamping fixture for unloading sleeves according to claim 8, characterized in that, A positioning pin (12) is vertically fixed on the outer circumferential sidewall of the processing platform (1) near the circular protrusion (11). A positioning hole (101) is provided on the bottom end face of the sidewall of the unloading sleeve (100). The positioning pin (12) can be inserted into the positioning hole (101).
10. A vertical clamping fixture for unloading sleeves according to any one of claims 1-9, characterized in that, The processing platform (1) is provided with grooves (13) spaced apart from the contact position between the unloading sleeve (100) and its upper plate.