Quick gear shaving mandrel clamping switching device

Abstract

The utility model relates to the technical field of mandrel clamping, and discloses a gear shaving mandrel clamping rapid switching device which comprises a lower base, a movable cavity is formed in an inner cavity of the lower base, an inner side wall is arranged on the inner wall of the lower base, the inner cavity of the lower base is in threaded connection with a tightening nail, an upper die is arranged at the top of the lower base, and a lower die is arranged at the bottom of the upper die. A protruding strip is arranged at the bottom of the upper mold body, a clamping groove is formed in the outer wall of the protruding strip, an adding strip is arranged at the bottom of the upper mold body, and a round core shaft, a clamping plate, a tightening nail and a threaded hole on the device are used in cooperation, so that when the round core shaft on the device is placed in an inner cavity of a vertical round hole and reaches an inner cavity of a movable cavity, the clamping groove is formed in the outer wall of the protruding strip; according to the clamping device for the round core shaft, the clamping nail is screwed to extrude the round core shaft in the middle along an inner cavity of the threaded hole, and the clamping plates on the two sides are pushed to clamp the outer wall of the round core shaft through twisting of the propeller, so that the round core shaft on the clamping device is clamped and fixed, and then the clamping operation is conducted on the round core shaft through the clamping device.

Description

Technical Field

[0001] This utility model relates to the field of mandrel clamping technology, specifically a quick-switching device for shaving mandrel clamping. Background Technology

[0002] Gear shaving fixtures are also constantly being improved and innovated. For example, the adoption of new fixture structures such as hydraulic expansion mandrels and expansion sleeve structures can further improve the positioning accuracy and processing efficiency of workpieces. At the same time, by optimizing the design and manufacturing process of fixtures, production costs can be reduced and the durability of fixtures can be improved.

[0003] Existing devices typically use a circular clamp to fit a cylindrical shaving mandrel, and then clamp the mandrel after fitting. However, in this process, because the circumference of the shaving mandrels varies, it is necessary to switch between the upper mold or the lower base of the clamp. Therefore, the clamp design needs to be changed, using multiple auxiliary strips to assist in the clamping work. When fixing the shaving mandrel, clamping pins are used to hold the outer wall of the shaving mandrel to prevent rotational deflection during processing. Therefore, a quick-change device for shaving mandrel clamping is needed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a quick-change device for shaving mandrel clamping, which has the advantages of replacing the mounting strip, reducing costs, and avoiding deflection, thus solving the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a quick-change device for clamping and mounting a shaving mandrel, including a lower base, an inner cavity with a movable cavity, an inner wall with an inner sidewall, a threaded fastening pin connected to the inner cavity of the lower base, an upper mold at the top of the lower base, a protruding strip at the bottom of the upper mold, a slot on the outer wall of the protruding strip, a mounting strip at the bottom of the upper mold, a vertical circular hole in the inner cavity of the upper mold, a threaded hole on the outer wall of the protruding strip, a fixing screw seat fixedly mounted at the top of the upper mold, a pusher threadedly connected to the inner wall of the fixing screw seat, a clamping plate fixedly connected to the outer wall of the pusher, and a circular mandrel placed in the inner cavity of the upper mold.

[0006] As a preferred embodiment of this utility model, the inner wall of the inner sidewall is the same size as the outer wall of the protrusion, and the outer wall of the lower base and the upper mold are the same size.

[0007] As a preferred embodiment of this utility model, the height of the movable cavity opened in the inner cavity of the lower base is the same as the height of the protrusion, and the upper mold is fastened to the top of the lower base.

[0008] As a preferred embodiment of this utility model, the threaded hole penetrates the inner wall of the lower base, the protruding strip, and the mounting strip, and the outer wall of the clamping pin engages with the internal thread of the threaded hole.

[0009] As a preferred embodiment of this utility model, the outer wall of the mounting strip is provided with protrusions, and the mounting strip is engaged into the inner cavity of the slot through the protrusions.

[0010] As a preferred embodiment of this utility model, the side of the thruster facing the circular core shaft is connected to a clamping plate, and the clamping plate is arc-shaped.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This quick-change device for clamping and switching the shaving mandrel utilizes the cooperation of the mandrel, clamping plates, clamping pins, and threaded holes on the device. When the mandrel is placed into the inner cavity of the vertical circular hole and reaches the inner cavity of the movable cavity, the clamping pins are twisted to press along the inner cavity of the threaded hole towards the central mandrel. The twisting of the pusher pushes the clamping plates on both sides to clamp the outer wall of the mandrel, thereby clamping and fixing the mandrel on the device, and thus enabling the device to perform clamping and mounting operations on the mandrel.

[0013] 2. This quick-change device for shaving mandrel clamping utilizes the coordinated use of the upper protrusion, the mounting strip, the upper mold, and the round mandrel. When the upper mold is fastened to the top of the lower base, the outer side of the protrusion first engages with the inner wall of the inner sidewall. Then, mounting strips of different thicknesses are inserted into the slots on the outer wall of the protrusion, allowing the mounting strips to quickly cooperate with the protrusion for switching. Consequently, when the round mandrel is changed to a different thickness, mounting strips of different thicknesses are simultaneously replaced to assist the protrusion and the clamping pins in their operation, thus avoiding frequent changes to the upper mold. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0016] Figure 3 This is a schematic diagram of the left cross-sectional structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the lower base structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the upper mold structure of this utility model.

[0019] In the diagram: 1. Lower base; 2. Movable cavity; 3. Inner side wall; 4. Clamping pin; 5. Upper mold; 6. Protrusion; 7. Slot; 8. Mounting strip; 9. Vertical round hole; 10. Threaded hole; 11. Fixing screw seat; 12. Pusher; 13. Clamping plate; 14. Round mandrel. Detailed Implementation

[0020] 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.

[0021] See also Figures 1-5 The quick-change device for shaving mandrel clamping includes a lower base 1, an inner cavity 2 with a movable cavity, an inner wall 3 on the inner wall of the lower base 1, a clamping pin 4 threadedly connected to the inner cavity of the lower base 1, an upper mold 5 on the top of the lower base 1, a protruding strip 6 on the bottom of the upper mold 5, a slot 7 on the outer wall of the protruding strip 6, an mounting strip 8 on the bottom of the upper mold 5, a vertical circular hole 9 in the inner cavity of the upper mold 5, a threaded hole 10 on the outer wall of the protruding strip 6, and a fixing screw seat 11 fixedly installed on the top of the upper mold 5. The device is connected to a pusher 12, and a clamping plate 13 is fixedly connected to the outer wall of the pusher 12. A round mandrel 14 is placed in the inner cavity of the upper mold 5. The inner wall of the vertical round hole 9 on the device is larger than the outer wall diameter of the round mandrel 14, so that when the round mandrel 14 on the device is replaced with a round mandrel 14 of different specifications, the vertical round hole 9 on the device can accommodate round mandrels 14 of various specifications. This allows different round mandrels 14 to be connected downwards in the inner cavity of the vertical round hole 9, and the outer wall of the round mandrel 14 is clamped and fixed by the clamping nail 4 and the clamping plate 13.

[0022] In a preferred embodiment, the inner wall of the inner sidewall 3 is the same size as the outer wall of the protrusion 6, and the outer walls of the lower base 1 and the upper mold 5 are the same size. By making the inner wall of the inner sidewall 3 of the device the same size as the outer wall of the protrusion 6, when the protrusion 6 of the device covers downwards, the inner wall of the inner sidewall 3 and the outer wall of the protrusion 6 are the same size, so that when the lower base 1 and the upper mold 5 of the device are circularly overlapped, the inner sidewall 3 fits the protrusion 6 and automatically aligns the position of the clamping nail 4 and the threaded hole 10.

[0023] In a preferred embodiment, the height of the movable cavity 2 inside the lower base 1 is the same as the height of the protrusion 6, and the upper mold 5 is fastened to the top of the lower base 1. Since the height of the movable cavity 2 inside the lower base 1 is the same as the height of the protrusion 6, when the upper mold 5 on the device is fastened downward, the lower base 1 and the upper mold 5 on the device overlap, and the protrusion 6 enters the inner cavity of the movable cavity 2, so that the protrusion 6 on the device completely fits into the inner cavity of the movable cavity 2.

[0024] In a preferred embodiment, the threaded hole 10 penetrates the inner wall of the lower base 1, the protrusion 6, and the mounting strip 8, and the outer wall of the clamping pin 4 engages with the internal thread of the threaded hole 10. By having the threaded hole 10 penetrate the inner wall of the lower base 1, the protrusion 6, and the mounting strip 8, when the lower base 1 of the device coincides with the upper mold 5, the threaded holes 10 opened in the inner walls of the lower base 1, the protrusion 6, and the mounting strip 8 are automatically aligned, and the outer thread of the clamping pin 4 engages with the internal thread of the threaded hole 10, so that the clamping pin 4 of the device spirals into the inner cavity of the lower base 1, and then spirals into the inner cavity of the protrusion 6 and the mounting strip 8.

[0025] In a preferred embodiment, the outer wall of the mounting strip 8 is provided with protrusions, and the mounting strip 8 is engaged into the inner cavity of the slot 7 through the protrusions. Because the outer wall of the mounting strip 8 on the device is provided with protrusions, when the mandrel 14 on the device is placed into the inner cavity of the vertical circular hole 9, and when the clamping pin 4 needs to be pressed and fixed by passing through the inner cavity of the threaded hole 10, if the thickness of the protrusion 6 on the device is insufficient to support the clamping pin 4 to extend to the outer wall of the mandrel 14, the thickness of the mounting strip 8 itself is increased, and the mounting strip 8 is engaged into the inner cavity of the slot 7 through the protrusions, thereby increasing the thickness of the protrusion 6 on both sides of the mounting strip 8, so that the clamping pin 4 can smoothly transition to the outer wall of the mandrel 14.

[0026] In a preferred embodiment, the side of the pusher 12 facing the mandrel 14 is connected to the clamping plate 13, and the clamping plate 13 is arc-shaped. By connecting the side of the pusher 12 facing the mandrel 14 to the clamping plate 13, the outer wall of the pusher 12 engages with the inner wall of the fixing screw seat 11. When the pusher 12 is manually turned with a wrench or other tools, the pusher 12 rotates and pushes the clamping plate 13 closer to the outer wall of the mandrel 14, thereby pushing the clamping plates 13 on both sides of the device toward the middle, and thus clamping the middle outer wall of the mandrel 14.

[0027] The working principle is as follows: First, through the cooperation of the circular mandrel 14, clamping plate 13, clamping pin 4, and threaded hole 10 on the device, the circular mandrel 14 is placed into the inner cavity of the vertical circular hole 9 and reaches the inner cavity of the movable cavity 2. The clamping pin 4 is then twisted to press along the inner cavity of the threaded hole 10 towards the central circular mandrel 14. Simultaneously, the twisting of the pusher 12 pushes the clamping plates 13 on both sides to clamp the outer wall of the circular mandrel 14, thereby clamping and fixing the circular mandrel 14. This allows the device to perform the installation operation on the circular mandrel 14. Then, through the installation... The coordinated use of the upper protrusion 6, the mounting strip 8, the upper mold 5, and the mandrel 14 allows the upper mold 5 to be fastened to the top of the lower base 1. First, the outer side of the protrusion 6 fits into the inner wall of the inner sidewall 3. Then, mounting strips of different thicknesses 8 are inserted into the slots 7 on the outer wall of the protrusion 6. This allows the mounting strips 8 to quickly switch with the protrusion 6. As a result, when the mandrel 14 is changed to a different thickness, mounting strips of different thicknesses 8 are simultaneously replaced to assist the protrusion 6 and the clamping pin 4 in their work, and frequent replacement of the upper mold 5 is avoided.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-change device for shaving mandrel clamping, comprising a lower base (1), characterized in that: The lower base (1) has an inner cavity with a movable cavity (2), the inner wall of the lower base (1) has an inner sidewall (3), the inner cavity of the lower base (1) is threaded with a clamping nail (4), the top of the lower base (1) is provided with an upper mold (5), the bottom of the upper mold (5) is provided with a protrusion (6), the outer wall of the protrusion (6) is provided with a slot (7), the bottom of the upper mold (5) is provided with a mounting strip (8), the inner cavity of the upper mold (5) is provided with a vertical round hole (9), the outer wall of the protrusion (6) is provided with a threaded hole (10), the top of the upper mold (5) is fixedly installed with a fixing screw seat (11), the inner wall of the fixing screw seat (11) is threaded with a pusher (12), the outer wall of the pusher (12) is fixedly connected with a clamping plate (13), and the inner cavity of the upper mold (5) is placed with a round mandrel (14).

2. The quick-change device for shaving mandrel clamping according to claim 1, characterized in that: The inner wall of the inner sidewall (3) is the same size as the outer wall of the protrusion (6), and the outer walls of the lower base (1) and the upper mold (5) are the same size.

3. The quick-change device for shaving mandrel clamping according to claim 1, characterized in that: The height of the movable cavity (2) opened in the inner cavity of the lower base (1) is the same as the height of the protrusion (6), and the upper mold (5) is fastened to the top of the lower base (1).

4. The quick-change device for shaving mandrel clamping according to claim 1, characterized in that: The threaded hole (10) penetrates the inner wall of the lower base (1), the protrusion (6), and the mounting strip (8), and the outer wall of the clamping nail (4) engages with the internal thread of the threaded hole (10).

5. The quick-change device for shaving mandrel clamping according to claim 1, characterized in that: The outer wall of the mounting strip (8) is provided with protrusions, and the mounting strip (8) is inserted into the inner cavity of the slot (7) through the protrusions.

6. The quick-change device for shaving mandrel clamping according to claim 1, characterized in that: The side of the thruster (12) facing the mandrel (14) is connected to a clamping plate (13), and the clamping plate (13) is arc-shaped.

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