Three-piece type positioning clutch tooth device of lathe tool turret

Abstract

The utility model provides a lathe turret three-piece type positioning clutch tooth device which comprises a base body, a cutterhead is arranged at the front end of the base body, a main shaft is fixed in the base body, a piston cylinder is fixed at the end, close to the cutterhead, of the main shaft, the main shaft is sleeved with inner clutch teeth, and the inner clutch teeth are fixed to the base body. The outer portion of the inner clutch tooth is sleeved with an outer clutch tooth, the outer clutch tooth is fixed to the cutterhead and rotates together with the cutterhead, a piston clutch tooth is arranged at the position, between the piston cylinder and the inner clutch tooth, of the outer portion of the main shaft, and the piston clutch tooth conducts loosening or locking positioning in the axial direction relative to the inner clutch tooth. According to the utility model, a simple and easy dismounting structure is utilized, so that the piston clutch teeth, the piston oil seal and the main shaft oil seal are easily and smoothly maintained and replaced, thereby reducing manpower and shortening working hours.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe turrets, in particular to a three-piece positioning clutch gear device for a lathe turret. Background Art

[0002] In the current CNC lathe industry, the turrets used in each CNC lathe mainly include hydraulic turrets and servo turrets. The hydraulic turret is equipped with a cam and a linkage wheel mechanism, which is a traditional and stable method. However, since the tool change rotation speed of the hydraulic turret is slower than that of the servo turret, it has gradually been replaced by the servo turret. The servo turret uses positioning clutch teeth to achieve the rotation and tool position change of the tool disc, and can fix the tool disc to the base body after tool selection or tool change to generate rigidity. The accuracy of each tooth angle of the positioning clutch teeth determines the accuracy of each tool position of the tool disc. Most servo turrets adopt three-piece positioning clutch teeth. The three-piece structure has good waterproof and chip-proof performance. When the turret changes tools, the tool disc only needs to rotate without making axial pushing and pulling movements, which is beneficial to shortening the tool change time and the mechanism design of the servo turret.

[0003] The three-piece positioning clutch teeth used in the lathe turret usually include outer clutch teeth, inner clutch teeth and piston clutch teeth. When changing tools, the piston clutch teeth are driven by oil pressure to make an axial loosening movement relative to the inner clutch teeth, and the main shaft drives the outer clutch teeth and the tool disc to rotate to the specified tool position; then the piston clutch teeth are driven by oil pressure to make a locking movement relative to the inner clutch teeth, and at the same time, the outer clutch teeth and the inner clutch teeth are engaged and fixed with the piston clutch teeth to position and fix the tool disc. In the loosening or locking positioning action of the piston clutch teeth relative to the inner clutch teeth, the piston clutch teeth use a piston oil seal to achieve the purpose of sealing. However, the piston oil seal will wear and leak oil after long-term use, reducing the positioning accuracy of the tool disc. Therefore, after using for a period of time, the piston clutch teeth must be taken out for the repair or replacement of the piston oil seal. However, the existing three-piece positioning clutch teeth are also provided with inner clutch teeth and outer clutch teeth at the front end of the piston clutch teeth. If the oil seal on the piston clutch teeth is to be taken out, the gearbox and the servo motor behind the tool disc and the base must be completely disassembled, increasing the complexity of the operation of taking out the piston clutch teeth. And during the repair and replacement period, it is usually necessary to stop the machine, which also leads to an extension of the downtime.

[0004] Therefore, the industrial circle urgently needs to seek a three-piece positioning clutch gear device for a lathe turret that can streamline the repair and replacement operation of the piston oil seal, so as to solve various difficulties and deficiencies encountered in the above-mentioned prior art. Summary of the Utility Model

[0005] The purpose of the present utility model is to provide a three-piece positioning clutch gear device for a lathe turret. By using a simple disassembly structure, the piston clutch gear, its piston oil seal and the main shaft oil seal can be easily and smoothly repaired and replaced, thereby reducing the operation time and labor cost, and shortening the downtime during maintenance and replacement.

[0006] To achieve the above purpose, the present utility model provides a three-piece positioning clutch gear device for a lathe turret, including a base body. A turret is provided at the front end of the base body. A main shaft is fixed inside the base body. A piston cylinder is fixed at the end of the main shaft close to the turret. An inner clutch gear is sleeved outside the main shaft and fixed to the base body. An outer clutch gear is sleeved outside the inner clutch gear, and the outer clutch gear is fixed to the turret and rotates together with the turret. A piston clutch gear is arranged outside the main shaft between the piston cylinder and the inner clutch gear, and the piston clutch gear makes an axial loosening or locking positioning action relative to the inner clutch gear.

[0007] Optionally, an opening is provided in the center of the turret, and a cover plate for opening or closing the opening is arranged on the surface of the opening.

[0008] Optionally, the upper and lower sides of the piston clutch gear are fastened between the side wall of the piston cylinder and the main shaft, and piston oil seals are respectively arranged on both sides.

[0009] Optionally, piston oil seal grooves are respectively recessed on both sides of the piston clutch gear, and the piston oil seals are embedded in the piston oil seal grooves.

[0010] Optionally, a main shaft oil seal is arranged on the outer side of the main shaft corresponding to the position of the piston clutch gear.

[0011] Optionally, a main shaft oil seal groove is recessed on the outer side of the main shaft, and the main shaft oil seal is embedded in the main shaft oil seal groove.

[0012] Optionally, a first oil chamber is formed between the piston clutch gear and the main shaft. When oil enters the first oil chamber, the piston clutch gear will be displaced away from the inner clutch gear due to the oil pressure.

[0013] Optionally, a second oil chamber is formed between the piston clutch gear and the piston cylinder. When oil enters the second oil chamber, the piston clutch gear will be displaced close to the inner clutch gear due to the oil pressure.

[0014] Compared with the prior art, the technical solution of the present utility model has at least the following beneficial effects:

[0015] (1) According to the three-piece positioning clutch gear device for a lathe turret provided by the present utility model, by arranging the piston clutch gear at the front end of the inner clutch gear and the outer clutch gear, the removal operation of the piston clutch gear can be significantly simplified and more efficient.

[0016] (2) According to the three-piece positioning clutch gear device of the lathe turret provided by the present utility model, when the piston oil seal and the spindle oil seal are repaired and replaced, it is not necessary to disassemble the tool disc. It can be directly opened from the front cover plate of the tool disc, and then the piston clutch gear can be taken out for repair and replacement, which can greatly shorten the downtime during repair and replacement.

[0017] The following will be described in detail with specific embodiments in conjunction with the accompanying drawings, and it will be easier to understand the purpose, technical content, features and achieved effects of the present utility model. Brief Description of the Drawings

[0018] Figure 1 is a sectional view of the three-piece positioning clutch gear device of the lathe turret provided by the embodiment of the present utility model.

[0019] Figure 2 is a three-dimensional sectional view of the three-piece positioning clutch gear device of the lathe turret provided by the embodiment of the present utility model.

[0020] Figure 3 is an exploded view of the three-piece positioning clutch gear device of the lathe turret provided by the embodiment of the present utility model.

[0021] Figure 4 is an external view of the three-piece positioning clutch gear device of the lathe turret provided by the embodiment of the present utility model.

[0022] In the figure:

[0023] 100: Three-piece positioning clutch gear device of the lathe turret;

[0024] 10: Base body;

[0025] 11: Tool disc;

[0026] 12: Opening;

[0027] 13: Cover plate;

[0028] 20: Three-piece positioning clutch gear;

[0029] 21: Inner clutch gear;

[0030] 22: Outer clutch gear;

[0031] 23: Piston clutch gear;

[0032] 24: Piston oil seal;

[0033] 25: Spindle oil seal;

[0034] 26: Piston oil seal groove;

[0035] 27: Spindle oil seal groove;

[0036] 28: Piston oil seal;

[0037] 29: Piston oil seal groove;

[0038] 30: Spindle;

[0039] 40: Piston cylinder. Detailed implementation mode

[0040] Embodiments of the present utility model will be further explained below in conjunction with relevant drawings. As much as possible, in the drawings and the specification, the same reference numerals represent the same or similar components. In the drawings, for the sake of simplicity and convenience of marking, the shapes and thicknesses may be exaggerated. It can be understood that the components not specifically shown in the drawings or described in the specification are in the forms known to those of ordinary skill in the art. Those of ordinary skill in the art can make various changes and modifications according to the content of the present utility model.

[0041] It should be noted that all directional indications (such as up, down, left, right, front, back) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If this specific posture changes, then the directional indications will also change accordingly. In the description of the present utility model, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, unless it is clearly visible from a specific context to exclude plural numbers, the singular article also includes the description of plural components or elements.

[0042] As described in the prior art, currently, existing three-piece positioning clutch teeth are also provided with inner clutch teeth and outer clutch teeth at the front end of the piston clutch teeth, which will increase the complexity of the removal operation of the piston clutch teeth and extend the downtime of the user during maintenance. To solve the above technical problems, the basic idea of the present utility model is to provide a three-piece positioning clutch tooth device for a lathe turret, with a simple disassembly structure, which can facilitate the removal of the piston clutch teeth and its piston oil seal and spindle oil seal for maintenance and replacement, can reduce the operation time and labor cost, and thus shorten the downtime during maintenance and replacement.

[0043] Please refer to Figures 1 to 4 . Figure 1 is a sectional view of the three-piece positioning clutch tooth device for a lathe turret provided by the embodiment of the present utility model; Figure 2 is a three-dimensional sectional view of the three-piece positioning clutch tooth device for a lathe turret provided by the embodiment of the present utility model; Figure 3 is an exploded view of the three-piece positioning clutch tooth device for a lathe turret provided by the embodiment of the present utility model; Figure 4It is an external view of the three-piece positioning clutch gear device of the lathe turret provided by the embodiment of the present utility model. The three-piece positioning clutch gear device 100 of the lathe turret in this embodiment is mainly composed of a base body 10, three-piece positioning clutch gears 20, a main shaft 30 and a piston cylinder 40.

[0044] Among them, a turret 11 is provided at the front end of the base body 10. An opening 12 is provided in the center of the turret 11, and a cover plate 13 for opening or closing the opening 12 is provided on the surface of the opening 12. The main shaft 30 is fixed inside the base body 10. A piston cylinder 40 is fixed to the end of the main shaft 30 close to the turret 11. The base body 10 may also be provided with a plurality of pipe holes for the release and locking oil circuits and cooling water. These pipe holes are connected to the pipe holes of the main shaft 30, and the pipe holes of the main shaft communicate with the piston cylinder 40. The detailed configuration method of this part is well-known to those of ordinary skill in the art, so it will not be described in detail.

[0045] The three-piece positioning clutch gears 20 include an inner clutch gear 21, an outer clutch gear 22 and a piston clutch gear 23. The inner clutch gear 21 is fixed to the base body 10 and sleeved outside the main shaft 30. The outer clutch gear 22 is sleeved outside the inner clutch gear 21, and the outer clutch gear 22 is fixed to the turret 11 and rotates together with the turret 11. The piston clutch gear 23 is arranged outside the main shaft 30 and between the piston cylinder 40 and the inner clutch gear 21. The piston clutch gear 23 makes an axial release or locking positioning movement relative to the inner clutch gear 21. A first oil chamber is formed between the piston clutch gear 23 and the main shaft 30, and a second oil chamber is formed between the piston clutch gear 23 and the piston cylinder 40.

[0046] As Figure 1 and Figure 2 When the piston clutch gear 23 and the inner clutch gear 21 in are in a locked state, when the turret needs to change tools, oil is introduced into the first oil chamber between the piston clutch gear 23 and the main shaft 30. The piston clutch gear 23 will move in the Figure 1 and Figure 2 left direction in, so that the piston clutch gear 23 disengages from the inner clutch gear 21 and the outer clutch gear 22, forming a certain gap. At this time, the servo motor gear drives the gear on the outer diameter of the outer clutch gear 22, and the turret 11 is rotated to the specified tool position. At this time, the three-piece positioning clutch gears 20 are in a released state. When the three-piece positioning clutch gears 20 need to be locked, oil is introduced into the second oil chamber between the piston clutch gear 23 and the piston cylinder 40. The piston clutch gear 23 will move in the right direction in Figures 1 and 2 under the oil pressure, so that the piston clutch gear 23 engages with the outer clutch gear 22 and the inner clutch gear 21, and at the same time presses against the fixed surface of the base body, so that the three-piece positioning clutch gears 20 are engaged at the same time, and the positioning accuracy of the tool position of the turret 11 is ensured.

[0047] In an embodiment of the present utility model, the upper and lower sides of the piston clutch tooth 23 are fastened between the side wall of the piston cylinder 40 and the main shaft 30, and piston oil seals 24 and 28 are respectively provided on both sides. A main shaft oil seal 25 is provided on the outer side of the main shaft 30 corresponding to the position of the piston clutch tooth 23. Piston oil seal grooves 26 and 29 are respectively recessed on both the inner diameter and outer diameter sides of the piston clutch tooth 23, and a main shaft oil seal groove 27 is recessed on the outer diameter of the main shaft 30 for the piston oil seals 24 and 28 to be embedded in the piston oil seal grooves 26 and 29, and the main shaft oil seal 25 to be embedded in the main shaft oil seal groove 27. As Figure 1 and Figure 2 shown in, piston oil seal grooves 26 and 29 are recessed between the piston clutch tooth 23 and the side wall of the piston cylinder 40, and the piston oil seals 24 and 28 embedded in the piston oil seal grooves 26 and 29. Between the piston clutch tooth 23 and the main shaft 30, a main shaft oil seal groove 27 is recessed on the outer diameter of the main shaft 30 and the main shaft oil seal 25 embedded in this main shaft oil seal groove 27.

[0048] During the actuation of the piston clutch tooth 23 for loosening or locking and positioning relative to the outer clutch tooth 21 and the inner clutch tooth 21, the piston clutch tooth 23 uses the piston oil seals 24 and 28 and the main shaft oil seal 25 to achieve the purpose of sealing. After being used for a period of time, the oil plug oil seals 24 and 28 and the main shaft oil seal 25 are prone to wear and oil leakage, and the three-piece positioning clutch teeth 20 may also become dirty. In order to avoid reducing the positioning accuracy of the cutter head 11, it is necessary to take out the piston clutch tooth 23 to check the wear of the oil plug oil seals 24 and 28 and the main shaft oil seal 25 when necessary, so as to judge whether maintenance or replacement is required. At the same time, clean the dirt in the piston oil seal grooves 26 and 29 and the main shaft oil seal groove 27. In the embodiment of the present utility model, when performing maintenance inspection or replacement operations, as long as the cover plate 13 is opened from the front of the cutter head 11, the piston cylinder 40 and the piston clutch tooth 23 can be directly taken out through the opening 12 to check the wear of the oil plug oil seals 24 and 28 and the main shaft oil seal 25 on the piston clutch tooth 23, and then maintenance or replacement operations can be performed, and the cleaning operations of the piston oil seal grooves 26 and 29 and the main shaft oil seal groove 27 can be carried out.

[0049] According to the three-piece positioning clutch tooth device of the lathe turret provided by the present utility model, when performing maintenance and replacement of the piston cylinder and its piston oil seal, since the piston clutch tooth is arranged at the front end of the inner clutch tooth and the outer clutch tooth, compared with the prior art, it is not necessary to take out the inner clutch tooth and the outer clutch tooth first, which can make the removal operation of the piston clutch tooth more concise and efficient. Moreover, the present utility model can directly open the cover plate from the front of the cutter head without disassembling the cutter head, and then take out the piston clutch tooth, its piston oil seal and the main shaft oil seal for maintenance or replacement, and it is also convenient to clean the piston oil seal groove and the main shaft oil seal groove, which can greatly shorten the downtime during replacement and maintenance inspection, so as to reduce the process cost and improve the processing efficiency.

[0050] Although the content of the present utility model has been described in detail through the above preferred embodiments, it should be recognized that the above description should not be considered as a limitation to the present utility model. After those skilled in the art have read the above content, various modifications and substitutions to the present utility model will be obvious. Therefore, the protection scope of the present utility model should be defined by the appended patent application scope.

Claims

1. A three-piece positioning and clutch gear device for a lathe turret, characterized in that, It includes a base body, a cutter head is arranged at the front end of the base body, a main shaft is fixed inside the base body, a piston cylinder is fixed at the end of the main shaft close to the cutter head, an inner clutch gear is sleeved outside the main shaft, the inner clutch gear is fixed to the base body, an outer clutch gear is sleeved outside the inner clutch gear, and the outer clutch gear is fixed to the cutter head and rotates together with the cutter head. A piston clutch gear is arranged outside the main shaft between the piston cylinder and the inner clutch gear, and the piston clutch gear makes an axial loosening or locking positioning action relative to the inner clutch gear.

2. The three-piece positioning clutch gear device for a lathe turret according to claim 1, wherein, An opening is formed in the center of the cutter head, and a cover plate for opening or closing the opening is arranged on the surface of the opening.

3. The three-piece positioning clutch gear device of the lathe turret according to claim 1, characterized in that The upper and lower sides of the piston clutch gear are fastened between the side wall of the piston cylinder and the main shaft, and a piston oil seal is respectively arranged on both sides.

4. The three-piece positioning clutch gear device for a lathe turret according to claim 3, characterized in that, A piston oil seal groove is respectively concavely arranged on both sides of the piston clutch gear, and the piston oil seal is embedded in the piston oil seal groove.

5. The three-piece positioning clutch gear device of the lathe turret according to claim 1, characterized in that, A main shaft oil seal is arranged on the outer side of the main shaft corresponding to the position of the piston clutch gear.

6. The three-piece positioning clutch gear device of the lathe turret according to claim 5, characterized in that, A main shaft oil seal groove is concavely arranged on the outer side of the main shaft, and the main shaft oil seal is embedded in the main shaft oil seal groove.

7. The three-piece positioning clutch gear device for a lathe turret according to claim 1, characterized in that, A first oil chamber is formed between the piston clutch gear and the main shaft. When oil is introduced into the first oil chamber, the piston clutch gear will be displaced away from the inner clutch gear under the action of oil pressure.

8. The three-piece positioning clutch gear device for a lathe turret according to claim 1, characterized in that, A second oil chamber is formed between the piston clutch gear and the piston cylinder. When oil is introduced into the second oil chamber, the piston clutch gear will be displaced close to the inner clutch gear under the action of oil pressure.

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