Contact type self-centering quick-change device

Abstract

The utility model belongs to the field of clamping devices, and particularly relates to a contact type self-centering quick-changing device which comprises a mandrel connecting seat, a threaded column is arranged on one side of the mandrel connecting seat, and an adjusting reducing sleeve is arranged outside the threaded column. When the device is used, a workpiece is sleeved outside the adjusting variable-diameter sleeve, then the inner diameter of the workpiece is adapted by adjusting the variable-diameter sleeve and adjusting the diameter, and the positions of the lifting spring and the steel ball are adjusted by adjusting the screw-thread fit between the screw and the adjusting variable-diameter sleeve, so that the steel ball is more attached to the workpiece, and the lifting spring elastically supports the steel ball; the inner hole roundness of the workpiece is not damaged, then the workpiece is pressed on one side of the workpiece through the locking cover plate, the locking cover plate is locked by rotating the locking nut, the locking nut and the threaded column are matched in a threaded mode, the workpiece is pressed and fixed, and therefore the function of adapting to the workpieces with the inner holes different in roundness is achieved.

Description

Technical Field

[0001] This utility model relates to the field of clamping devices, specifically a contact-type self-centering quick-change device. Background Technology

[0002] In industrial manufacturing, workpieces need to be processed, and clamping devices are required to fix them in place, especially for round workpieces or workpieces with a round interior, which are more difficult to clamp.

[0003] When clamping workpieces, a mandrel is typically used in conjunction with the workpiece, and a dial indicator is used to calibrate the workpiece before clamping. However, during this process, the inner hole of the product often deforms due to heat treatment, resulting in inconsistent roundness. This necessitates preparing mandrels of various sizes in advance to clamp the workpiece, and dial indicator calibration is also required. The clamping process is cumbersome, involves preparing numerous mandrels of different sizes, and results in a slow clamping speed. Therefore, to address these issues, a contact-type self-centering quick-change device is proposed. Utility Model Content

[0004] To overcome the shortcomings of existing technologies and solve the problem that the inner hole of a product is deformed due to heat treatment, resulting in different roundness, it is necessary to prepare mandrels of various sizes and specifications in advance to clamp the workpiece, and also to perform dial gauge calibration, which is a cumbersome clamping process, requires a large number of mandrel specifications, and results in a slow clamping speed. This utility model proposes a contact-type self-centering quick-change device.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: The contact-type self-centering quick-change device of this utility model includes a mandrel connecting seat and a threaded post provided on one side of the mandrel connecting seat. An adjusting variable diameter sleeve is provided on the outside of the threaded post. A plurality of adjusting screws are provided inside the adjusting variable diameter sleeve. A plurality of lifting springs are fixedly connected inside the adjusting variable diameter sleeve. A plurality of steel balls are provided inside the adjusting variable diameter sleeve. A locking cover plate is sleeved on the outside of the threaded post. A locking nut is threadedly connected to the outside of the threaded post. A symmetrically distributed limiting component is provided inside the locking cover plate. The limiting component is connected to the locking nut.

[0006] Preferably, the limiting assembly includes a movable groove, a limiting rod, a spring, and a connecting rope. The movable groove is formed inside the locking cover plate. The limiting rod is movably connected inside the movable groove. The spring is fixedly connected inside the movable groove and to one side of the limiting rod. The connecting rope is fixedly connected to one side of the limiting rod, and one end of the connecting rope is connected to the locking nut. The top end of the limiting rod has an arc-shaped design.

[0007] Preferably, the mandrel connector has uniformly distributed through holes inside.

[0008] Preferably, the movable groove has a sliding groove inside, and a sliding plate is fixedly connected to the outside of the limiting rod, with the sliding plate slidably connected inside the sliding groove.

[0009] Preferably, the steel ball is movably connected inside the adjusting sleeve, and the steel ball extends to the outside of the adjusting sleeve.

[0010] Preferably, the diameter of the locking cover is smaller than the diameter of the workpiece.

[0011] The advantages of this utility model are:

[0012] 1. When using this utility model, the workpiece is placed on the outside of the adjusting sleeve, and then the diameter is adjusted by adjusting the adjusting sleeve to adapt to the inner diameter of the workpiece. The position of the lifting spring and the steel ball is adjusted by the threaded engagement between the adjusting screw and the adjusting sleeve, so that the steel ball fits the workpiece better, and the lifting spring provides elastic support to the steel ball without damaging the inside of the workpiece. Then, the locking cover plate is pressed against one side of the workpiece. By rotating the locking nut, the threaded engagement between the locking nut and the threaded post locks the locking cover plate and fixes the workpiece. This achieves the function of adapting to workpieces with different inner hole roundness.

[0013] 2. In this invention, when the workpiece is fitted onto the outside of the lifting spring, the workpiece contacts the top of the limiting rod. Due to the unique arc design of the limiting rod, it does not obstruct the movement of the locking nut; instead, it is pressed back into the movable groove until the locking nut leaves the limiting rod. The spring then returns to its original position, and the limiting rod returns to its original position. At this point, rotating the locking nut will lock the locking cover plate, and the limiting rod will limit the workpiece. When the workpiece is released, rotating the locking nut in the opposite direction will loosen the locking cover plate and pull the connecting rope, thus pulling the limiting rod back into the movable groove and removing its obstruction to the workpiece. The workpiece can then be directly removed from the adjusting sleeve, eliminating the need to disassemble and assemble the locking cover plate and locking nut, thereby achieving the effect of user convenience. Attached Figure Description

[0014] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This utility model Figure 1 Enlarged schematic diagram of the structure at point A;

[0017] Figure 3 This is a side view of the overall structure of this utility model.

[0018] In the diagram: 1. Mandrel connecting seat; 2. Threaded column; 3. Adjusting reducer sleeve; 4. Adjusting screw; 5. Lifting spring; 6. Steel ball; 7. Locking cover plate; 8. Locking nut; 9. Limiting assembly; 901. Movable groove; 902. Limiting rod; 903. Spring; 904. Connecting rope; 10. Through hole; 11. Slide groove; 12. Slide plate; 13. Workpiece. Detailed Implementation

[0019] 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 scope of protection of the present utility model.

[0020] Please see Figures 1-3 As shown, a contact-type self-centering quick-change device includes a spindle connecting seat 1 and a threaded post 2 provided on one side of the spindle connecting seat 1. An adjusting sleeve 3 is provided on the outside of the threaded post 2. Several adjusting screws 4 are provided inside the adjusting sleeve 3. Several lifting springs 5 ​​are fixedly connected inside the adjusting sleeve 3. Several steel balls 6 are provided inside the adjusting sleeve 3. A locking cover plate 7 is sleeved on the outside of the threaded post 2. A locking nut 8 is threadedly connected to the outside of the threaded post 2. A symmetrically distributed limiting component 9 is provided inside the locking cover plate 7. The limiting component 9 is connected to the locking nut 8.

[0021] During operation, the workpiece 13 is placed on the outside of the adjusting sleeve 3. The diameter of the adjusting sleeve 3 is then adjusted to fit the inner diameter of the workpiece 13. The threaded engagement between the adjusting screw 4 and the adjusting sleeve 3 adjusts the position of the lifting spring 5 and the steel ball 6, ensuring that the steel ball 6 fits the workpiece 13 more closely. The lifting spring 5 provides elastic support to the steel ball 6, preventing damage to the interior of the workpiece 13. Then, the locking cover 7 is pressed against one side of the workpiece 13. By rotating the locking nut 8, the threaded engagement between the locking nut 8 and the threaded post 2 locks the locking cover 7, fixing the workpiece 13 in place. This allows for the adaptation of workpieces 13 with different inner diameters. The limiting component 9, in conjunction with the locking cover 7, locks the workpiece 13 without hindering its movement.

[0022] Furthermore, the limiting component 9 includes a movable groove 901, a limiting rod 902, a spring 903, and a connecting rope 904. The movable groove 901 is opened inside the locking cover plate 7. The limiting rod 902 is movably connected inside the movable groove 901. The spring 903 is fixedly connected inside the movable groove 901 and is fixedly connected to one side of the limiting rod 902. The connecting rope 904 is fixedly connected to one side of the limiting rod 902, and one end of the connecting rope 904 is connected to the locking nut 8. The top of the limiting rod 902 has an arc-shaped design.

[0023] During operation, when workpiece 13 is fitted onto the outside of lifting spring 5, workpiece 13 contacts the top of limit rod 902. Due to the unique arc design of limit rod 902, limit rod 902 will not obstruct the movement of locking nut 8. Instead, it will be pressed back into the movable groove 901 until locking nut 8 leaves limit rod 902. Spring 903 then returns to its original position and pushes, limiting rod 902 back to its original position. At this time, rotating locking nut 8 can lock locking cover plate 7, and limit rod 902 limits workpiece 13. When workpiece 13 is released, rotating locking nut 8 in the opposite direction will loosen locking cover plate 7 and pull connecting rope 904. Limit rod 902 will be pulled back into movable groove 901, losing its obstruction to workpiece 13. Workpiece 13 can then be directly removed from adjusting sleeve 3, eliminating the need to disassemble and assemble locking cover plate 7 and locking nut 8.

[0024] Furthermore, the spindle connecting seat 1 has uniformly distributed through holes 10 inside;

[0025] During operation, the through hole 10 facilitates the fixing of the spindle connector 1.

[0026] Furthermore, a sliding groove 11 is provided inside the movable groove 901, and a sliding plate 12 is fixedly connected to the outside of the limiting rod 902, with the sliding plate 12 slidably connected inside the sliding groove 11;

[0027] During operation, the sliding plate 12 connected to the inside of the slide groove 11 allows the limiting rod 902 to move smoothly inside the movable groove 901 without rotating.

[0028] Furthermore, the steel ball 6 is movably connected inside the adjusting sleeve 3, and the steel ball 6 extends to the outside of the adjusting sleeve 3;

[0029] During operation, the steel ball 6 can fit well into the inner hole of the workpiece 13.

[0030] Furthermore, the diameter of the locking cover 7 is smaller than the diameter of the workpiece 13;

[0031] During operation, the workpiece 13 can pass directly through the locking cover plate 7 and be fitted onto the outside of the adjusting sleeve 3.

[0032] Working principle: In use, the workpiece 13 is placed on the outside of the adjusting sleeve 3. Then, the diameter of the adjusting sleeve 3 is adjusted to fit the inner diameter of the workpiece 13. The threaded engagement between the adjusting screw 4 and the adjusting sleeve 3 adjusts the position of the lifting spring 5 and the steel ball 6, making the steel ball 6 fit the workpiece 13 more closely. The lifting spring 5 provides elastic support to the steel ball 6, preventing damage to the inside of the workpiece 13. Then, the locking cover plate 7 is pressed against one side of the workpiece 13. By rotating the locking nut 8, the threaded engagement between the locking nut 8 and the threaded post 2 locks the locking cover plate 7, fixing the workpiece 13 in place. When the workpiece 13 is placed on the outside of the lifting spring 5, the workpiece 13 contacts the top of the limiting rod 902. Due to the limiting rod 902... 2. The unique arc-shaped design ensures that the limiting rod 902 will not obstruct the movement of the locking nut 8. Instead, it will be pressed back into the movable groove 901 until the locking nut 8 leaves the limiting rod 902. The spring 903 then returns to its original position, and the limiting rod 902 returns to its original position. At this point, rotating the locking nut 8 will lock the locking cover 7, and the limiting rod 902 will limit the workpiece 13. When the workpiece 13 is released, rotating the locking nut 8 in the opposite direction will loosen the locking cover 7 and pull the connecting rope 904. This will pull the limiting rod 902 back into the movable groove 901, removing its obstruction to the workpiece 13. Thus, the workpiece 13 can be directly removed from the adjusting sleeve 3, eliminating the need to disassemble and assemble the locking cover 7 and the locking nut 8.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A contact-type self-centering quick-change device, comprising a spindle connecting seat (1) and a threaded post (2) disposed on one side of the spindle connecting seat (1), characterized in that: The threaded column (2) is provided with an adjusting sleeve (3) on its outside. The adjusting sleeve (3) is provided with several adjusting screws (4) inside. The adjusting sleeve (3) is fixedly connected with several lifting springs (5) inside. The adjusting sleeve (3) is provided with several steel balls (6) inside. The threaded column (2) is sleeved with a locking cover plate (7) on its outside. The threaded column (2) is threadedly connected with a locking nut (8) on its outside. The locking cover plate (7) is provided with symmetrically distributed limiting components (9) inside. The limiting components (9) are connected to the locking nut (8).

2. The contact-type self-centering quick-change device according to claim 1, characterized in that: The limiting component (9) includes a movable groove (901), a limiting rod (902), a spring (903), and a connecting rope (904). The movable groove (901) is opened inside the locking cover plate (7). The limiting rod (902) is movably connected inside the movable groove (901). The spring (903) is fixedly connected inside the movable groove (901) and is fixedly connected to one side of the limiting rod (902). The connecting rope (904) is fixedly connected to one side of the limiting rod (902), and one end of the connecting rope (904) is connected to the locking nut (8). The top of the limiting rod (902) is arc-shaped.

3. The contact-type self-centering quick-change device according to claim 1, characterized in that: The spindle connector (1) has uniformly distributed through holes (10) inside.

4. The contact-type self-centering quick-change device according to claim 2, characterized in that: The movable groove (901) has a sliding groove (11) inside, and the limiting rod (902) is fixedly connected to a sliding plate (12) on the outside. The sliding plate (12) is slidably connected inside the sliding groove (11).

5. The contact-type self-centering quick-change device according to claim 1, characterized in that: The steel ball (6) is movably connected inside the adjusting sleeve (3), and the steel ball (6) extends to the outside of the adjusting sleeve (3).

6. A contact-type self-centering quick-change device according to claim 2, characterized in that: The diameter of the locking cover (7) is smaller than the diameter of the workpiece (13).

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