Tailstock top structure of horizontal numerical control gear hobbing machine

Abstract

This utility model relates to the field of processing equipment technology and discloses a tailstock center structure for a horizontal CNC gear hobbing machine. The structure includes a tailstock, on which a center pin is mounted. A detachably connected center pin block is mounted at the end of the center pin, and a locking assembly for locking the connection between the center pin block and the center pin. The locking assembly includes a connecting rod and a locking element. The connecting rod passes through the center pin block and the center pin, and the locking element restricts the displacement of the connecting rod to achieve a detachable connection. This utility model, through the detachable center pin block and locking assembly, enables individual replacement of the center pin. When the center pin block wears, it is not necessary to replace the entire center pin, reducing spare parts costs. Simultaneously, the quick disassembly and assembly design reduces replacement time, avoids the tedious operation of recalibrating coaxiality, and improves equipment uptime.

Description

Technical Field

[0001] This utility model relates to the field of processing equipment technology, and in particular to a tailstock tip structure for a horizontal CNC gear hobbing machine. Background Technology

[0002] In the field of gear machining, horizontal CNC gear hobbing machines are key equipment for achieving efficient and precise gear machining. Their tailstock center mechanism is used to position and support the workpiece, ensuring its stability during machining and directly affecting the gear machining accuracy. In actual machining, the tip of the tailstock center, as a critical part in direct contact with the workpiece, is frequently subjected to workpiece rotational friction, cutting force impact, and workpiece center hole fitting pressure, making it highly susceptible to wear, cracking, deformation, and other damage.

[0003] Currently, tailstock centers are mostly integrated structures. When the tip is damaged, the entire center needs to be replaced. On the one hand, the center body (such as alloy sleeves, transmission components, etc.) is scrapped due to localized tip damage before reaching its service life, significantly increasing the cost of spare parts and raising the overall cost of gear processing. On the other hand, when replacing the entire center, its coaxiality with the gear hobbing machine spindle needs to be recalibrated with high precision, involving multiple clamping, debugging, and precision testing, which is time-consuming, increases the downtime of the gear hobbing machine, and reduces equipment uptime. Especially in small-batch, multi-variety processing scenarios, frequent replacements severely affect production rhythm and efficiency. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a tailstock tip structure for a horizontal CNC gear hobbing machine. Through a detachable tip block and locking assembly, it enables quick tip replacement, reduces costs, and improves processing efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A tailstock tip structure for a horizontal CNC gear hobbing machine includes a tailstock, a pin mounted on the tailstock, a detachably connected tip block mounted on the end of the tip block, and a locking component for locking the tip block and the tip block in a connected state.

[0007] The locking assembly includes a connecting rod and a locking element. The connecting rod passes through a top end block and a pin, and the locking element restricts the displacement of the connecting rod to achieve a detachable connection.

[0008] Preferably, the tip of the ejector pin is provided with a slot for inserting a tip block, and the tip block is provided with a plug end that can be inserted into the slot.

[0009] Preferably, the ejector pin has an insertion hole communicating with the slot, the top end block has a connecting groove, and the connecting rod passes through the insertion hole and cooperates with the connecting groove.

[0010] Preferably, one end of the socket is provided with a positioning end, and one end of the connecting rod is provided with a positioning groove that matches the positioning end.

[0011] Preferably, the ejector pin has a connecting hole corresponding to the insertion hole, the connecting rod has a connecting groove corresponding to the connecting hole, and the locking member passes through the connecting hole and is embedded in the connecting groove.

[0012] Preferably, the locking component includes a connecting tube, a fixing plate is provided inside the connecting tube, springs are symmetrically connected to both sides of the fixing plate, and the ends of the springs are connected to the connecting end.

[0013] Preferably, the connecting end is tapered, with a pressing end at its narrow end and a squeezing end at its wide end. The squeezing end is connected to a spring, and the tapered connecting end can be pushed by the spring to make the connecting end abut against the ball in the locking groove.

[0014] Preferably, the connecting tube is provided with a plurality of movable holes symmetrically, and each movable hole contains a ball bearing that abuts against the tapered surface of the connecting end. Through the cooperation of the ball bearing and the locking groove, the locking component can be stably locked.

[0015] Preferably, the inner wall of the connecting hole is provided with an annular locking groove, and the ball portion protrudes from the movable hole and is embedded in the locking groove to restrict the axial displacement of the locking component.

[0016] Preferably, the connecting tube is symmetrically provided with limiting plates located on the side of the extrusion end away from the spring, which restricts excessive displacement of the connecting end. The limiting plates can limit the movement of the extrusion end, thereby preventing excessive movement of the connecting end.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention enables individual replacement of the tip by using a detachable tip block and locking assembly. When the tip block wears out, there is no need to replace the entire ejector pin, reducing spare parts costs. At the same time, the quick disassembly and assembly design reduces replacement time, avoids the tedious operation of recalibrating coaxiality, and improves equipment uptime. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a view showing the connection between the ejector pin and the tip block of this utility model;

[0022] Figure 3 This is a view showing the ejector pin and the tip block separated from the present invention.

[0023] Figure 4 This is a bottom view of the ejector pin and the tip block of this utility model;

[0024] Figure 5 This is a cross-sectional view of the connection between the ejector pin and the tip block of this utility model;

[0025] Figure 6 For the present utility model Figure 5 Enlarged view at point A in the middle;

[0026] Figure 7 This is a structural view of the connecting rod of this utility model;

[0027] Figure 8 This is a structural view of the locking component of this utility model.

[0028] Drawing number explanation: 1. Tailstock; 2. Ejector pin; 21. Slot; 22. Insertion hole; 23. Connecting hole; 24. Locking groove; 25. Positioning end; 3. Top end block; 31. Connecting groove one; 4. Connecting rod; 41. Connecting groove two; 42. Positioning groove; 5. Locking element; 51. Connecting tube; 52. Fixing plate; 53. Spring; 54. Connecting end; 55. Pressing end; 56. Pressing end; 57. Ball bearing. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings.

[0030] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0031] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0032] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number. Example

[0033] Please see Figure 1-8 A tailstock tip structure for a horizontal CNC gear hobbing machine includes a tailstock 1, a pin 2 mounted on the tailstock 1, a detachably connected tip block 3 mounted on the end of the pin 2, and a locking component for locking the connection state between the tip block 3 and the pin 2.

[0034] The locking assembly includes a connecting rod 4 and a locking element 5. The connecting rod 4 passes through the tip block 3 and the pin 2, and the locking element 5 restricts the displacement of the connecting rod 4 to achieve a detachable connection.

[0035] The end of the ejector pin 2 is provided with a slot 21 for inserting the tip block 3, and the tip block 3 is provided with a plug end that can be inserted into the slot 21.

[0036] The ejector pin 2 is provided with an insertion hole 22 that communicates with the slot 21, and the tip block 3 is provided with a connecting groove 31. The connecting rod 4 passes through the insertion hole 22 and cooperates with the connecting groove 31.

[0037] One end of the socket 22 is provided with a positioning end 25, and one end of the connecting rod 4 is provided with a positioning groove 42 that is adapted to the positioning end 25.

[0038] The ejector pin 2 is provided with a connecting hole 23 corresponding to the insertion hole 22, the connecting rod 4 is provided with a connecting groove 41 corresponding to the connecting hole 23, and the locking member 5 passes through the connecting hole 23 and is embedded in the connecting groove 41.

[0039] The locking component 5 includes a connecting tube 51, a fixing plate 52 is provided inside the connecting tube 51, springs 53 are symmetrically connected on both sides of the fixing plate 52, and the ends of the springs 53 are connected to the connecting end 54.

[0040] The connecting end 54 is tapered, with a pressing end 55 at its narrow end and a squeezing end 56 at its wide end. The squeezing end 56 is connected to the spring 53. The spring 53 pushes the squeezing end 56, which pushes the tapered connecting end 54 so that the connecting end 54 can abut the ball 57 in the locking groove 24.

[0041] Multiple movable holes are symmetrically provided inside the connecting pipe 51. There are ball bearings 57 in the movable holes that abut against the tapered surface of the connecting end 54. Through the cooperation of the ball bearings 57 and the locking groove 24, the locking member 5 can be stably locked.

[0042] The inner wall of the connecting hole 23 is provided with an annular locking groove 24. The ball 57 protrudes from the movable hole and is embedded in the locking groove 24 to restrict the axial displacement of the locking part 5.

[0043] A limiting plate is symmetrically provided inside the connecting pipe 51, located on the side of the extrusion end 56 away from the spring 53, to limit the excessive displacement of the connecting end 54. The limiting plate can limit the movement of the extrusion end 56, thereby preventing the excessive movement of the connecting end 54.

[0044] During the component assembly process, insert the insertion end of the top end block 3 into the slot 21 of the pin 2, ensuring that the insertion hole 22 and the connecting groove 31 are coaxially aligned. Insert the connecting rod 4 into the insertion hole 22, and embed the positioning end 25 into the positioning groove 42 to accurately position the connecting rod 4. Press the pressing end 55 of the locking component 5. (When pressing the pressing end 55 during the installation of the locking component 5, a tool can be used to first pass through the connecting hole 23 and the connecting groove 41 on one side to press the pressing end 55 of the connecting tube 51, making it easier for the user to insert that end of the connecting tube 51 into the connecting hole 23 first, and making it easier for the user to insert the entire connecting tube 51 into the installation.) When the spring 53 is compressed, the connecting end 54 moves axially. After the ball 57 loses contact with the tapered connecting end 54, the ball 57 can move. When the connecting tube 51 is inserted into the connecting hole 23, the ball 57 can move inward, so that the connecting tube 51 can pass into the connecting hole 23 and the connecting groove 41 until the ball 57 is aligned with the corresponding locking groove 24. When the pressing end 55 is released, the spring 53 returns to its original position and contacts the ball 57 again through the tapered connecting end 54, causing part of the ball 57 to protrude out of the movable hole and be embedded in the locking groove 24, thereby completing the rigid connection between the locking part 5 and the top end block 3.

[0045] When the tip block 3 breaks and needs replacement, press the pressing ends 55 at both ends of the connecting tube 51 simultaneously. The spring 53 will be compressed, and the ball 57 will be able to exit the locking groove 24. The locking piece 5 can be moved out from the side of the connecting hole 23. Then, push the connecting rod 4 upward and pull it out to separate the tip block 3 for replacement.

[0046] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A tailstock center structure for a horizontal CNC gear hobbing machine, characterized in that, Includes a tailstock (1), on which a pin (2) is mounted, and at the end of the pin (2) is a detachably connected tip block (3), and a locking component for locking the connection state between the tip block (3) and the pin (2); The locking assembly includes a connecting rod (4) and a locking member (5). The connecting rod (4) passes through the top end block (3) and the pin (2). The locking member (5) restricts the displacement of the connecting rod (4) to achieve a detachable connection.

2. The tailstock center structure of a horizontal CNC gear hobbing machine according to claim 1, characterized in that: The pin (2) has a slot (21) at its end for inserting the tip block (3), and the tip block (3) has a plug end that can be inserted into the slot (21).

3. The tailstock center structure of a horizontal CNC gear hobbing machine according to claim 2, characterized in that: The pin (2) is provided with a socket (22) communicating with the slot (21), the top end block (3) is provided with a connecting groove (31), and the connecting rod (4) passes through the socket (22) and cooperates with the connecting groove (31).

4. The tailstock center structure of a horizontal CNC gear hobbing machine according to claim 3, characterized in that: One end of the socket (22) is provided with a positioning end (25), and one end of the connecting rod (4) is provided with a positioning groove (42) that is adapted to the positioning end (25).

5. The tailstock center structure of a horizontal CNC gear hobbing machine according to claim 4, characterized in that: The pin (2) is provided with a connecting hole (23) corresponding to the insertion hole (22), the connecting rod (4) is provided with a connecting groove (41) corresponding to the connecting hole (23), and the locking member (5) passes through the connecting hole (23) and is embedded in the connecting groove (41).

6. The tailstock center structure of a horizontal CNC gear hobbing machine according to claim 5, characterized in that: The locking component (5) includes a connecting tube (51), a fixing plate (52) is provided inside the connecting tube (51), springs (53) are symmetrically connected on both sides of the fixing plate (52), and the ends of the springs (53) are connected to the connecting end (54).

7. The tailstock center structure of a horizontal CNC gear hobbing machine according to claim 6, characterized in that: The connecting end (54) is tapered, with a pressing end (55) at its narrow end and a squeezing end (56) at its outer expansion end. The squeezing end (56) is connected to the spring (53).

8. The tailstock center structure of a horizontal CNC gear hobbing machine according to claim 7, characterized in that: The connecting tube (51) is symmetrically provided with multiple movable holes, and the movable holes contain ball bearings (57) that abut against the conical surface of the connecting end (54).

9. The tailstock center structure of a horizontal CNC gear hobbing machine according to claim 8, characterized in that: The inner wall of the connecting hole (23) is provided with an annular locking groove (24), and the ball (57) protrudes from the movable hole and is embedded in the locking groove (24) to restrict the axial displacement of the locking part (5).

10. The tailstock center structure of a horizontal CNC gear hobbing machine according to claim 9, characterized in that: The connecting tube (51) is symmetrically provided with limiting plates, which are located on the side of the extrusion end (56) away from the spring (53) to limit the excessive displacement of the connecting end (54).

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