A sealed chuck and a machining apparatus

Abstract

The utility model relates to the field of machining discloses a sealed chuck, including dog, chuck body and sealed assembly, chuck body links with dog through driving assembly, and the chuck body has the sliding slot of being suitable for dog, and the clearance piece is arranged in the sliding slot, and dog and clearance piece slide and abut each other. The clearance piece can improve the machining precision consistency of sliding slot, thereby effectively improving the clamping precision of dog, guaranteeing the motion stability of dog, avoiding the problem that the workpiece machining precision is influenced due to the low clamping precision of dog and the chuck expansion jaw phenomenon in the prior art. The clearance piece and chuck body are detachably connected, the production and processing difficulty of the chuck body is reduced while guaranteeing the clamping precision of dog. The sealing cover is sleeved on the outside of the chuck body, and the gap between dog and chuck body is blocked through the cover plate and dust cover, the machining chips are prevented from entering the inside of the chuck, the rotation smoothness of the chuck is guaranteed, and the service life of the chuck is prolonged. The utility model further provides a kind of processing equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of machining equipment and its peripheral supporting facilities, and in particular to a sealing chuck and machining equipment. Background Technology

[0002] Machine tools are core equipment in modern industrial production. They process workpieces through mechanical, physical, and chemical methods, including forming, cutting, and modifying them. This transforms raw materials or blanks into mechanical parts or finished products with specific shapes, dimensional accuracy, surface quality, and performance characteristics. Machine tools are fundamental production tools for manufacturing various machines, equipment, and components, directly determining the quality, precision, and production efficiency of industrial products. Chucks are crucial clamping tools on machine tools. Their function is to fix the workpiece through a clamping mechanism, providing a stable and precise positioning reference for the machining process. This is a necessary prerequisite for machine tools to perform cutting, grinding, drilling, and other machining operations.

[0003] In existing chucks, the jaws slide against the chuck body via a T-slot structure. Machining these T-slots is difficult, and ensuring consistency across all T-slots on the chuck body is challenging, resulting in poor machining accuracy. This causes the jaws to tilt upwards at the workpiece contact point, reducing workpiece machining precision. Furthermore, the jaws are exposed on the outer diameter of the chuck body, allowing machining chips and dust to enter the chuck body during processing. This is particularly problematic during grinding, where grinding wheel dust can enter the chuck body, causing chuck movement to become sluggish and, in severe cases, even jamming and damage.

[0004] Therefore, how to change the current situation in the prior art where the chuck jaws have poor workpiece clamping accuracy and machining chips enter the chuck, affecting the workpiece machining accuracy, has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a sealed chuck and processing equipment to solve the problems existing in the above-mentioned related technologies, improve the chuck clamping accuracy, enhance the sealing performance of the chuck, thereby improving the workpiece processing accuracy and extending the service life of the equipment.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides a sealing chuck, comprising: The chucks are provided in multiple sets and are capable of clamping the workpiece. The chuck body is connected to the machine tool spindle drive, and the machine tool spindle can drive the chuck body to rotate. The chuck body is connected to the jaws via a drive assembly, and the chuck body can drive the jaws to reciprocate to clamp and release the workpiece. The chuck body has a slide groove adapted to the jaws, and a gap plate is provided in the slide groove. The jaws slide against the gap plate, and the gap plate is detachably connected to the chuck body. The machining accuracy of the gap plate is higher than that of the slide groove. A sealing assembly includes a sealing ring, a cover plate, and a dust cover. The sealing ring is fitted over the outside of the chuck body. The cover plate is connected to the axial end of the chuck body near the jaws. The dust cover is fitted over the outside of the jaws and seals the gap between the jaws and the cover plate. Sealing elements are provided between the sealing ring and the chuck body, between the sealing ring and the cover plate, between the cover plate and the dust cover, and between the dust cover and the jaws.

[0007] Preferably, the groove is a rectangular groove, and the shape of the spacer plate matches the groove; The groove and the gap plate correspond one-to-one with the chuck.

[0008] Preferably, the spacer is detachably connected to the chuck body by a connecting screw, and the spacer has a countersunk hole adapted to the connecting screw; The number of connecting screws is multiple sets, and the connecting screws are arranged along the radial direction of the chuck body.

[0009] Preferably, both the chuck body and the cover plate have a stepped structure adapted to the sealing ring, and the axial end face of the sealing ring abuts against the end face of the stepped structure of the chuck body and the cover plate, respectively.

[0010] Preferably, a shaped retaining spring is provided between the dust cover and the retaining claw to press the dust cover tightly against the cover plate.

[0011] Preferably, the drive assembly includes a rotary cylinder, a tie rod, and a drive block. The rotary cylinder is connected to the machine tool spindle and is driven by the tie rod, which can drive the tie rod to slide back and forth. The reciprocating sliding direction of the tie rod is parallel to the axial direction of the machine tool spindle. The tie rod is connected to the drive block via a connecting assembly. The drive block is slidably connected to the chuck, and the sliding connection surface between the two is an inclined plane, so as to push the chuck to slide back and forth. The reciprocating motion direction of the chuck is parallel to the radial direction of the machine tool spindle.

[0012] Preferably, the connecting assembly includes a retaining ring, a pull rod adapter, and a threaded sleeve. The pull rod is connected to the threaded sleeve, the retaining ring is connected to the pull rod adapter, and the two cooperate to fix the extreme axial position of the threaded sleeve. The pull rod adapter is connected to the drive block. The sealing assembly also includes a dust cover, the pull rod adapter and the drive block are sleeved on the outside of the dust cover, and sealing elements are provided between the dust cover and the pull rod adapter and between the dust cover and the claw. The chuck body is also connected to an adapter flange, and the connecting assembly is located within the space enclosed by the chuck body and the adapter flange.

[0013] Preferably, the drive assembly includes a bottom body, a valve core, and a drive block. The bottom body is connected to the end of the chuck body away from the jaws. The valve core is slidably disposed within the space enclosed by the bottom body and the chuck body, dividing it into a first cavity and a second cavity. Both the first cavity and the second cavity are connected to a drive air source. The drive air source delivers a drive medium to the first cavity and the second cavity, driving the valve core to slide back and forth. The sliding direction of the valve core is parallel to the axial direction of the machine tool spindle. The valve core is connected to the drive block, and the drive block is slidably connected to the jaws, with their sliding connection surface being an inclined plane, to push the jaws to slide back and forth. The reciprocating motion direction of the jaws is parallel to the radial direction of the machine tool spindle.

[0014] Preferably, the bottom body can be connected to the driving air source via a rotary joint, the bottom body has a first communication port and a second communication port, the driving air source is connected to the first cavity via the first communication port, and the driving air source is connected to the second cavity via the second communication port; The sealing assembly also includes a dust cover, which is a cylindrical structure. The drive block and the claw are disposed outside the dust cover, and a sealing element is provided between the dust cover and the claw. The bottom body is also connected to a water spray cover, which has water spray holes facing the hollow part of the dust cover. An external cleaning medium source can spray cleaning medium onto the workpiece through the water spray holes.

[0015] This utility model also provides a processing device, including a machine tool spindle and the aforementioned sealed chuck, wherein the machine tool spindle is connected to the chuck body in a driving connection.

[0016] This utility model achieves the following technical advantages over related technologies: The sealing chuck of this utility model includes jaws, a chuck body, and a sealing assembly. The jaws are in multiple sets and can abut against the workpiece to clamp it. The chuck body is connected to the machine tool spindle drive, which drives the chuck body to rotate. The chuck body is connected to the jaws via a drive assembly, allowing the jaws to reciprocate and slide to clamp and release the workpiece. The chuck body has a groove adapted to the jaws, with a gap provided within the groove. The chuck jaws and the gap plate slide against each other. The gap plate is detachably connected to the chuck body, and the machining accuracy of the gap plate is higher than that of the sliding groove. The sealing assembly includes a sealing ring, a cover plate, and a dust cover. The sealing ring is fitted outside the chuck body. The cover plate is connected to the axial end of the chuck body near the jaw. The dust cover is fitted outside the jaw and seals the gap between the jaw and the cover plate. Sealing elements are provided between the sealing ring and the chuck body, between the sealing ring and the cover plate, between the cover plate and the dust cover, and between the dust cover and the jaw.

[0017] This invention relates to a sealed chuck. A gap plate is provided within the chuck body's sliding groove. The jaws slide in contact with the gap plate, which is manufactured with high precision. Utilizing the gap plate improves the consistency of the sliding groove's machining precision, thereby effectively enhancing the jaw's clamping accuracy and ensuring its movement stability. This avoids the problems in existing technologies where low jaw clamping accuracy and jaw bulging affect workpiece machining accuracy. The gap plate is detachably connected to the chuck body, reducing the manufacturing difficulty of the chuck body and lowering production and operating costs while maintaining jaw clamping accuracy. Simultaneously, this invention incorporates a sealing assembly. A sealing ring is fitted over the outside of the chuck body, and a cover plate and dust cover seal the gap between the jaws and the chuck body, minimizing the entry of machining debris into the chuck, ensuring smooth rotation and operational reliability, and extending the chuck's service life.

[0018] This utility model also provides a processing device, including the aforementioned sealing chuck. Naturally, the processing device of this utility model can also achieve the aforementioned beneficial effects. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an isometric schematic diagram of the sealing chuck disclosed in the embodiments of this utility model when driven by a pull rod; Figure 2This is a front view of the sealing chuck disclosed in the embodiment of the present utility model when it is driven by a pull rod. Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure along the AA direction; Figure 4 This is an isometric schematic diagram of the sealing chuck disclosed in the embodiments of this utility model when driven by a driving air source; Figure 5 This is a front view of the sealing chuck disclosed in the embodiment of the present utility model when driven by a driving air source; Figure 6 for Figure 5 A schematic diagram of the cross-sectional structure along the BB direction.

[0021] In the diagram: 1. Chuck body; 2. Gap plate; 3. Sealing ring; 4. Cover plate; 5. Dust cover; 6. Connecting screw; 7. Irregular circlip; 8. Drive block; 9. Female claw; 10. Female claw; 11. Positioning pin; 12. Retaining ring; 13. Tie rod adapter; 14. Threaded sleeve; 15. Dust cover; 16. Adapter flange; 17. Bottom body; 18. Valve core; 19. First cavity; 20. Second cavity; 21. First connecting port; 22. Second connecting port; 23. Spray cap; 24. Spray hole; 25. Fitting ring. Detailed Implementation

[0022] 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.

[0023] The purpose of this invention is to provide a sealed chuck and processing equipment to solve the problems existing in the above-mentioned related technologies, improve the chuck clamping accuracy, enhance the sealing performance of the chuck, thereby improving the workpiece processing accuracy and extending the service life of the equipment.

[0024] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1 This embodiment provides a sealed chuck; please refer to [reference needed]. Figures 1-6The chuck includes jaws, a chuck body 1, and a sealing assembly. The jaws are in multiple sets and can abut against the workpiece for clamping. The chuck body 1 is connected to the machine tool spindle drive, which drives the chuck body 1 to rotate. The chuck body 1 is connected to the jaws via a drive assembly, allowing the jaws to reciprocate and slide to clamp and release the workpiece. The chuck body 1 has a groove adapted to the jaws, and a gap plate 2 is provided within the groove. The jaws slide against the gap plate 2, and the gap plate 2 is in contact with the chuck body 1. The detachable connection and the machining accuracy of the gap 2 are higher than that of the slide groove; the sealing assembly includes a sealing ring 3, a cover plate 4 and a dust cover 5. The sealing ring 3 is sleeved on the outside of the chuck body 1. The cover plate 4 is connected to the axial end of the chuck body 1 near the jaw. The dust cover 5 is sleeved on the outside of the jaw and seals the gap between the jaw and the cover plate 4. Sealing elements are provided between the sealing ring 3 and the chuck body 1, between the sealing ring 3 and the cover plate 4, between the cover plate 4 and the dust cover 5, and between the dust cover 5 and the jaw.

[0026] This invention relates to a sealed chuck. A gap plate 2 is provided within the groove of the chuck body 1. The jaws slide in contact with the gap plate 2. The gap plate 2 has high machining precision, which improves the consistency of machining precision across the groove, thereby effectively improving the clamping precision of the jaws and ensuring their movement stability. This avoids the problems in existing technologies where low jaw clamping precision and jaw expansion affect workpiece machining precision. The gap plate 2 is detachably connected to the chuck body 1, reducing the manufacturing difficulty of the chuck body 1 and lowering the production and usage costs of the chuck while ensuring jaw clamping precision. Simultaneously, this invention incorporates a sealing assembly. A sealing ring 3 is fitted over the outside of the chuck body 1, and a cover plate 4 and a dust cover 5 seal the gap between the jaws and the chuck body 1, ensuring the chuck's airtightness, minimizing the entry of machining debris into the chuck, ensuring smooth rotation and operational reliability, and extending the chuck's service life.

[0027] Among them, the gap plate 2 and the chuck are made by grinding to ensure the sliding fit accuracy between the gap plate 2 and the chuck, thereby effectively improving the clamping accuracy of the chuck and avoiding the problem of reduced workpiece accuracy due to low clamping accuracy in the prior art.

[0028] In this specific embodiment, the slide is a rectangular groove, which further reduces the processing and manufacturing difficulty of the chuck body 1 compared with the T-shaped groove in the prior art. The shape of the gap plate 2 matches the slide, and the gap plate 2 can fully contact the jaw, further ensuring the sliding fit accuracy between the jaw and the gap plate 2.

[0029] The sliding grooves and gap plates 2 correspond one-to-one with the jaws. The jaws are evenly distributed circumferentially around the axis of the chuck body 1. In this specific embodiment, there are three sets of jaws, which adopt a split structure, including a female jaw 9 and a male jaw 10. The female jaw 9 and the male jaw 10 are connected by screws, and a positioning pin 11 is provided between them to ensure the connection and positioning accuracy of the female jaw 9 and the male jaw 10. The drive assembly drives the female jaw 9 to slide back and forth. The female jaw 9 slides and engages with the gap plate 2, and drives the male jaw 10 to move back and forth in the radial direction of the chuck body 1, so that the male jaw 10 can contact and separate from the workpiece, realizing the clamping and releasing of the workpiece.

[0030] In a specific embodiment of this utility model, the spacer 2 is detachably connected to the chuck body 1 by the connecting screw 6, which makes the connection fastening and disassembly convenient. The spacer 2 has a countersunk hole that matches the connecting screw 6, and the screw head of the connecting screw 6 is located in the countersunk hole to avoid affecting the reciprocating sliding of the female claw 9.

[0031] To improve the structural stability of the gap plate 2, multiple sets of connecting screws 6 are used. These connecting screws 6 are arranged radially along the chuck body 1. In this specific embodiment, each gap plate 2 is connected to the chuck body 1 using two sets of connecting screws 6, ensuring reliable connection and preventing misalignment of the gap plate 2 around the connecting screws 6. This improves the structural stability of the gap plate 2 and, consequently, ensures the sliding fit accuracy between the gap plate 2 and the female jaw 9. In practical applications, the number of connecting screws 6 used for each gap plate 2 can be adjusted according to the specifications of the chuck body 1 and the gap plate 2 to meet different specific connection conditions, ensuring the sliding fit accuracy between the gap plate 2 and the female jaw 9 and improving the clamping accuracy of the jaws.

[0032] Specifically, both the chuck body 1 and the cover plate 4 have stepped structures adapted to the sealing ring 3. The axial end face of the sealing ring 3 abuts against the end faces of the stepped structures of the chuck body 1 and the cover plate 4, respectively. The stepped structure of the chuck body 1 provides a positioning base for the installation of the sealing ring 3, and the outer circumferential surface of the sealing ring 3 is flush with the outer circumferential surface of the larger diameter end of the chuck body 1, improving the overall integrity of the sealing chuck structure and minimizing the accumulation of machining chips and dust. Similarly, the cover plate 4 is located at the end of the sealing ring 3 away from the chuck body 1. The cover plate 4 has a stepped structure, allowing the smaller diameter end of the cover plate 4 to extend into the sealing ring 3 to fix the axial installation position of the sealing ring 3 and the cover plate 4, improving the ease of assembly of the sealing assembly and ensuring the structural stability and sealing reliability of the sealing assembly.

[0033] Meanwhile, a special-shaped retaining spring 7 is provided between the dust cover 5 and the jaws to press the dust cover 5 onto the cover plate 4. The special-shaped retaining spring 7 is used to press the dust cover 5, fix the axial position of the dust cover 5, prevent machining chips from entering the chuck through the gap between the jaws and the cover plate 4, and prevent the special-shaped retaining spring 7 from affecting the clamping action of the jaws.

[0034] In this specific embodiment, the drive assembly includes a rotary cylinder, a tie rod, and a drive block 8. The rotary cylinder is connected to the machine tool spindle and is driven by the tie rod, which can drive the tie rod to slide back and forth. The reciprocating sliding direction of the tie rod is parallel to the axial direction of the machine tool spindle. The tie rod is connected to the drive block 8 via a connecting assembly. The drive block 8 is slidably connected to the chuck, and the sliding connection surface between the two is an inclined plane, so as to push the chuck to slide back and forth. The reciprocating motion direction of the chuck is parallel to the radial direction of the machine tool spindle.

[0035] The machine tool spindle drives a rotary cylinder to rotate. The rotary cylinder is connected to a pull rod drive, which in turn drives the pull rod to reciprocate along the axial direction. The pull rod, through a connecting assembly, drives the drive block 8 to slide back and forth, thereby pushing the female jaw 9 to move radially back and forth. The female jaw 9 drives the male jaw 10 to move radially, allowing the male jaw 10 to contact and separate from the workpiece, thus achieving the clamping and releasing of the workpiece. It should be explained here that the rotary cylinder output torque can be connected to the pull rod drive via a gear and rack mechanism, a lead screw and nut mechanism, or other transmission mechanisms to achieve the purpose of driving the pull rod to perform reciprocating linear motion. The pull rod then drives the drive block 8 to slide back and forth. The appropriate selection and arrangement of the transmission mechanism to achieve motion conversion is a common practice among those skilled in the art and will not be elaborated further here.

[0036] In this specific embodiment, the connecting assembly includes a retaining ring 12, a pull rod adapter 13, and a threaded sleeve 14. The pull rod is connected to the threaded sleeve 14, and the retaining ring 12 is connected to the pull rod adapter 13, with the two cooperating to fix the extreme axial position of the threaded sleeve 14. The pull rod adapter 13 is connected to the drive block 8. The retaining ring 12 and the pull rod adapter 13 are located at the two ends of the axial direction of the threaded sleeve 14, thereby positioning the threaded sleeve 14 between the retaining ring 12 and the pull rod adapter 13, and reserving axial floating space for the threaded sleeve 14. The pull rod is connected to the threaded sleeve 14 and is connected to the drive block 8 via the threaded sleeve 14 and the pull rod adapter 13. The pull rod reciprocates axially, thereby driving the drive block 8 to reciprocate. The reciprocating motion of the drive block 8 pushes the female jaw 9 to reciprocate radially, and the female jaw 9 drives the male jaw 10 to move to realize the clamping and releasing of the workpiece.

[0037] Meanwhile, the sealing assembly also includes a dust cover 15, a pull rod adapter 13, and a drive block 8, which are fitted over the dust cover 15. Sealing elements are provided between the dust cover 15 and the pull rod adapter 13, as well as between the dust cover 15 and the jaws. The dust cover 15 is provided inside the drive block 8 to prevent machining chips and dust from entering the chuck from the inside of the jaws, further enhancing the sealing performance of the chuck, ensuring the reliability of the chuck's operation, and extending the service life of the chuck.

[0038] In this specific embodiment, an O-ring can be used as the sealing element. In practical applications, other types of sealing elements can also be selected to meet different working conditions, thereby improving the chuck's flexibility and adaptability while ensuring its sealing performance.

[0039] In practical applications, the chuck body 1 is also connected to an adapter flange 16. The connection assembly is located in the space enclosed by the chuck body 1 and the adapter flange 16. The adapter flange 16 facilitates the connection between the chuck and the machine tool spindle, ensuring the smooth transmission of power.

[0040] Example 2 This embodiment discloses a sealed chuck. In this specific embodiment, the drive assembly includes a bottom body 17, a valve core 18, and a drive block 8. The bottom body 17 is connected to the end of the chuck body 1 away from the jaws. The valve core 18 is slidably disposed in the space enclosed by the bottom body 17 and the chuck body 1, separating a first cavity 19 and a second cavity 20. Both the first cavity 19 and the second cavity 20 are connected to a drive air source. The drive air source delivers a drive medium to the first cavity 19 and the second cavity 20, which can drive the valve core 18 to slide back and forth. The sliding direction of the valve core 18 is parallel to the axial direction of the machine tool spindle. The valve core 18 is connected to the drive block 8, and the drive block 8 is slidably connected to the jaws, and the sliding connection surface of the two is an inclined surface, so as to push the jaws to slide back and forth. The reciprocating motion direction of the jaws is parallel to the radial direction of the machine tool spindle.

[0041] This embodiment employs a pneumatic drive system. A driving air source supplies driving medium to the first cavity 19 and the second cavity 20, respectively. This drives the valve core 18 to reciprocate along the chuck axis, which in turn drives the drive block 8 to reciprocate. The drive block 8 pushes the female jaw 9 to slide radially back and forth, causing the female jaw 10 to contact and separate from the workpiece, thus achieving the clamping and releasing of the workpiece. It should be noted that sealing elements are provided between each pair of the valve core 18, the bottom body 17, and the chuck body 1 to ensure the sealing of the first cavity 19 and the second cavity 20, preventing leakage of the driving medium and avoiding mutual interference between the first cavity 19 and the second cavity 20, thereby ensuring the reliability of the drive assembly.

[0042] Specifically, the bottom body 17 can be connected to the driving air source via a rotary joint, ensuring smooth delivery of the driving medium while avoiding interference with the chuck's rotation and guaranteeing its normal operation. The bottom body 17 has a first connecting port 21 and a second connecting port 22. The driving air source is connected to the first cavity 19 via the first connecting port 21 and to the second cavity 20 via the second connecting port 22. The driving medium is delivered to the first cavity 19 and the second cavity 20 via the first connecting port 21 and the second connecting port 22 respectively, preventing mutual interference between the first cavity 19 and the second cavity 20 and ensuring the reliability of the driving assembly. Solenoid valves are installed between the driving air source and the first cavity 19 and the second cavity 20, and are driven and controlled by these valves. When air enters the first cavity 19, the second cavity 20 is connected to the external atmosphere; correspondingly, when air enters the second cavity 20, the first cavity 19 is connected to the external atmosphere, ensuring that the valve core 18 can smoothly reciprocate. In practical applications, compressed air or other media can be used as the driving medium to ensure that the driving components can smoothly drive the chuck movement.

[0043] Meanwhile, the sealing assembly also includes a dust cover 15, which is a cylindrical structure. The drive block 8 and the jaws are located outside the dust cover 15. The dust cover 15 can effectively prevent machining chips and dust and other debris from entering the chuck from the inside of the jaws, effectively protecting the chuck and ensuring the reliability of the chuck's operation. In addition, a sealing element is provided between the dust cover 15 and the jaws to prevent leakage of the drive medium and ensure the drive reliability of the drive assembly.

[0044] More specifically, the bottom body 17 is also connected to a water spray cover 23, which has water spray holes 24 facing the hollow part of the dust cover 15. An external cleaning medium source can spray cleaning medium onto the workpiece through the water spray holes 24. During workpiece processing, the external cleaning medium source sprays cleaning medium onto the workpiece through the water spray holes 24 to wash away machining chips and dust and other impurities generated during processing, ensuring the machining accuracy of the workpiece, and also cooling the workpiece. The cleaning medium can also be connected to the water spray cover 23 through a rotary joint connected to the machining spindle, cleaning the workpiece while avoiding affecting the normal operation of the chuck. The cleaning medium can be high-pressure water or other cutting fluids.

[0045] In practical applications, the driving method of the jaws can be selected according to the actual working conditions to meet different processing equipment and processing requirements, thereby improving the flexibility and adaptability of the sealed chuck.

[0046] The other structures of the sealing chuck in this embodiment are the same as those in Embodiment 1, and will not be described again here.

[0047] Example 3 This embodiment provides a processing device, including a machine tool spindle and a sealed chuck of embodiment one or embodiment two, wherein the machine tool spindle is connected to the chuck body 1 in a transmission manner.

[0048] In this embodiment of the machining equipment, the chuck has a gap plate 2 set in the slide groove. By adjusting the height of the female jaw 9 and the gap plate 2, the accuracy of the female jaw 9 sliding up and down in the slide groove is achieved, thereby improving the clamping accuracy of the chuck. This solves the problem in the prior art where the female jaw 9 has low accuracy within the chuck body 1, causing the jaws to warp and bulge, resulting in low workpiece machining accuracy. The machining equipment in this embodiment uses a sealed chuck, achieving a complete seal within the chuck body 1. This prevents machining chips, dust, cutting fluid, cooling water, etc., from entering the chuck interior during machining, extending the chuck's service life and ensuring the stability of the chuck's clamping.

[0049] It should also be noted that the chuck of the processing equipment in this embodiment is equipped with a matching ring 25. The operator can match the chuck according to the processing diameter, or rematch the clamping diameter after the jaws are worn, which improves the ease of operation of the processing equipment, and improves the processing efficiency and flexibility of the processing equipment.

[0050] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A sealing chuck, characterized in that, include: The chucks are provided in multiple sets and are capable of clamping the workpiece. The chuck body is connected to the machine tool spindle drive, and the machine tool spindle can drive the chuck body to rotate. The chuck body is connected to the jaws via a drive assembly, and the chuck body can drive the jaws to reciprocate to clamp and release the workpiece. The chuck body has a slide groove adapted to the jaws, and a gap plate is provided in the slide groove. The jaws slide against the gap plate, and the gap plate is detachably connected to the chuck body. The machining accuracy of the gap plate is higher than that of the slide groove. A sealing assembly includes a sealing ring, a cover plate, and a dust cover. The sealing ring is fitted over the outside of the chuck body. The cover plate is connected to the axial end of the chuck body near the jaws. The dust cover is fitted over the outside of the jaws and seals the gap between the jaws and the cover plate. Sealing elements are provided between the sealing ring and the chuck body, between the sealing ring and the cover plate, between the cover plate and the dust cover, and between the dust cover and the jaws.

2. The sealing chuck according to claim 1, characterized in that: The groove is a rectangular groove, and the shape of the spacer plate matches the groove. The groove and the gap plate correspond one-to-one with the chuck.

3. The sealing chuck according to claim 1, characterized in that: The spacer plate is detachably connected to the chuck body by a connecting screw, and the spacer plate has a countersunk hole that matches the connecting screw; The number of connecting screws is multiple sets, and the connecting screws are arranged along the radial direction of the chuck body.

4. The sealing chuck according to claim 1, characterized in that: Both the chuck body and the cover plate have stepped structures adapted to the sealing ring, and the axial end faces of the sealing ring abut against the end faces of the stepped structures of the chuck body and the cover plate, respectively.

5. The sealing chuck according to claim 1, characterized in that: A shaped retaining spring is provided between the dust cover and the retaining claw to press the dust cover tightly against the cover plate.

6. The sealing chuck according to any one of claims 1-5, characterized in that: The drive assembly includes a rotary cylinder, a tie rod, and a drive block. The rotary cylinder is connected to the machine tool spindle and is driven by the tie rod, which can drive the tie rod to slide back and forth. The reciprocating sliding direction of the tie rod is parallel to the axial direction of the machine tool spindle. The tie rod is connected to the drive block via a connecting assembly. The drive block is slidably connected to the chuck, and the sliding connection surface between the two is an inclined plane, so as to push the chuck to slide back and forth. The reciprocating motion direction of the chuck is parallel to the radial direction of the machine tool spindle.

7. The sealing chuck according to claim 6, characterized in that: The connecting assembly includes a retaining ring, a pull rod adapter, and a threaded sleeve. The pull rod is connected to the threaded sleeve, the retaining ring is connected to the pull rod adapter, and the two cooperate to fix the extreme axial position of the threaded sleeve. The pull rod adapter is connected to the drive block. The sealing assembly also includes a dust cover, the pull rod adapter and the drive block are sleeved on the outside of the dust cover, and sealing elements are provided between the dust cover and the pull rod adapter and between the dust cover and the claw. The chuck body is also connected to an adapter flange, and the connecting assembly is located within the space enclosed by the chuck body and the adapter flange.

8. The sealing chuck according to any one of claims 1-5, characterized in that: The drive assembly includes a bottom body, a valve core, and a drive block. The bottom body is connected to the end of the chuck body away from the jaws. The valve core is slidably disposed within the space enclosed by the bottom body and the chuck body, dividing it into a first cavity and a second cavity. Both the first cavity and the second cavity are connected to a drive air source. The drive air source delivers a drive medium to the first cavity and the second cavity, driving the valve core to slide back and forth. The sliding direction of the valve core is parallel to the axial direction of the machine tool spindle. The valve core is connected to the drive block, and the drive block is slidably connected to the jaws, with their sliding connection surface being an inclined plane, to push the jaws to slide back and forth. The reciprocating motion direction of the jaws is parallel to the radial direction of the machine tool spindle.

9. The sealing chuck according to claim 8, characterized in that: The bottom body can be connected to the driving air source via a rotary joint. The bottom body has a first communication port and a second communication port. The driving air source is connected to the first cavity via the first communication port and to the second cavity via the second communication port. The sealing assembly also includes a dust cover, which is a cylindrical structure. The drive block and the claw are disposed outside the dust cover, and a sealing element is provided between the dust cover and the claw. The bottom body is also connected to a water spray cover, which has water spray holes facing the hollow part of the dust cover. An external cleaning medium source can spray cleaning medium onto the workpiece through the water spray holes.

10. A processing device, comprising a machine tool spindle, characterized in that: It also includes the sealed chuck according to any one of claims 1-9, wherein the machine tool spindle is drive-connected to the chuck body.

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