A deep hole drilling machine tool guide sleeve position avoiding device

Abstract

The application relates to the technical field of deep hole drilling machine tools, and particularly discloses a deep hole drilling machine tool guide sleeve avoiding device which comprises a main shaft base, a guide sleeve, a fixing base, a moving base, a transposition driving assembly, a transverse driving assembly and a locking assembly. The fixing base is fixed to one end of the main shaft base, the moving base is slidably arranged on the top of the main shaft base, the transverse driving assembly drives the moving base to move along the length direction of the main shaft base, so that the moving base is butted against or away from the fixing base. The guide sleeve is slidably arranged on the fixing base and is locked or loosened through the locking assembly. When the moving base is butted against the fixing base, the transposition driving assembly drives the guide sleeve to shift between the fixing base and the moving base. The device realizes automatic and rapid transposition and avoidance of the guide sleeve, significantly improves machining efficiency, reduces manual operation strength and guarantees machining continuity.

Description

Technical Field

[0001] This application relates to the technical field of deep hole drilling machines, and more specifically, it relates to a guide sleeve avoidance device for a deep hole drilling machine. Background Technology

[0002] Deep hole drilling machines are key pieces of equipment in the field of machining, specifically designed for drilling deep holes with a large depth-to-diameter ratio. Due to their slender drill bits and relatively poor rigidity, they are prone to bending, vibration, or misalignment during machining, which leads to a decrease in the straightness, dimensional accuracy, and surface quality of the machined holes.

[0003] To ensure machining accuracy, deep hole drilling machines are typically equipped with a guide sleeve mechanism. This guide sleeve is mounted on the spindle seat, and its inner hole precisely fits the drill bit. During operation, it guides and supports the drill bit, effectively enhancing its rigidity and suppressing its deformation and vibration. It is one of the core components that ensures the accuracy of hole machining.

[0004] In related technologies, guide sleeves are generally fixed directly to the end face of the machine tool spindle seat using multiple bolts. While this fixing method is simple in structure and reliable in connection, it has significant drawbacks: First, the fixed guide sleeve occupies a certain amount of axial space, hindering the drill bit's feed stroke and limiting the drill bit's maximum effective working stroke. When machining particularly deep holes, to fully utilize the drill bit's full length, the operator must disassemble the entire guide sleeve. The disassembly process requires using tools to loosen and remove multiple bolts one by one, which is time-consuming, labor-intensive, inefficient, and severely disrupts the continuity of machining, reducing overall production efficiency. Second, frequent disassembly and installation not only increase the operator's labor intensity.

[0005] Therefore, there is an urgent need for a new type of guide sleeve installation mechanism that can achieve rapid avoidance or displacement without affecting its guiding and support function, so as to free up the effective stroke of the drill bit, avoid cumbersome disassembly operations, and thus adapt to efficient and continuous production cycles. Utility Model Content

[0006] In order to solve the problem that the guide sleeve of a deep hole drilling machine is difficult to avoid the drill bit, which reduces the overall production efficiency and increases the labor intensity of the operators, this application provides a guide sleeve avoidance device for a deep hole drilling machine.

[0007] A guide sleeve avoidance device for a deep hole drilling machine includes a spindle seat, a guide sleeve, a fixed seat, a movable seat, a shifting drive assembly, a transverse drive assembly, and a locking assembly. The fixed seat is fixed to one end of the spindle seat, and the movable seat is slidably disposed on the top side of the spindle seat. The transverse drive assembly is connected to the movable seat and is used to drive the movable seat to move along the length direction of the spindle seat so that the movable seat engages with or moves away from the fixed seat. The guide sleeve is slidably disposed on the fixed seat and is locked to or released from the fixed seat by the locking assembly. When the movable seat engages with the fixed seat, the guide sleeve is driven by the shifting drive assembly to move onto the movable seat or from the movable seat to the fixed seat.

[0008] Preferably, the shifting drive assembly includes a first rack, a second rack, a gear, and a servo motor. The first rack is mounted on the fixed base, and the second rack is mounted on the movable base. The first rack and the second rack have the same model and size, and the length extension direction of the first rack is the same as that of the second rack. When the fixed base and the movable base are connected, the first rack and the second rack are connected. The servo motor is fixed on the guide sleeve, and the gear is mounted on the drive shaft of the servo motor, with the center of the gear aligned with the axis of the drive shaft of the servo motor. The gear meshes with the first rack.

[0009] Preferably, both the first rack and the second rack are inclined, and the inclination direction is towards the end of the spindle seat away from the fixed seat, with an inclination angle of 30-60°.

[0010] Preferably, the fixed seat is provided with a first slide rail parallel to the first rack, and the movable seat is provided with a second slide rail parallel to the second rack. The first slide rail and the second slide rail have the same model and size. When the fixed seat and the movable seat are connected, the first slide rail is connected to the second slide rail. The guide sleeve is provided with a first slider, and the first slider is slidably connected to the first slide rail.

[0011] Preferably, a third slide rail is provided on the top side of the spindle seat, with its length extension direction aligned with the length direction of the spindle seat, and a second slider is provided on the movable seat, the second slider being slidably connected to the third slide rail.

[0012] Preferably, the lateral drive assembly includes a first hydraulic cylinder, a support base, and a connector. The support base is disposed on the top side of the main spindle seat, and the connector is disposed on the movable seat. The tail end of the first hydraulic cylinder is connected and fixed to the support base, and the telescopic shaft of the first hydraulic cylinder is connected to the connector. The telescopic direction of the telescopic shaft of the first hydraulic cylinder is parallel to the length direction of the third slide rail.

[0013] Preferably, the locking assembly includes a second hydraulic cylinder, an abutment block, a locking plate, and a pressure plate. The abutment block is fixed to the lower side of the front of the spindle seat. The locking plate is disposed at the bottom of the guide sleeve. The top of the abutment block has a protrusion. The bottom of the locking plate abuts against the top of the abutment block, and the back side of the locking plate abuts against the protrusion of the abutment block. The second hydraulic cylinder is fixed to the back side of the spindle seat, and its telescopic shaft passes through the spindle seat and the abutment block. The second hydraulic cylinder is connected to the pressure plate, and the pressure plate is driven by the second hydraulic cylinder to press against the front side of the locking plate.

[0014] Preferably, a locking block is provided on the front side of the locking plate, the top surface of the locking block is a downward outward inclined surface, the top of the pressure plate is provided with a pressure block facing the main shaft seat, the bottom surface of the pressure block is an inward inclined surface with an inclination angle matching the outward inclined surface of the locking block, the pressure block abuts against the front side of the locking block, and the inward inclined surface of the pressure block fits against the outward inclined surface of the locking block.

[0015] This application includes at least one of the following beneficial technical effects:

[0016] 1. Driven by the positioning drive assembly, the guide sleeve can automatically, accurately, and quickly transfer between the fixed seat and the moving seat. When avoidance is required, the guide sleeve moves to the moving seat and moves away with it; when work is required, the moving seat resets and sends the guide sleeve back to the fixed lock. This process is highly automated, replacing the traditional tedious manual disassembly and bolt installation operations, greatly shortening auxiliary time, ensuring the continuity of processing, significantly improving overall production efficiency, and reducing manual operation by operators, thus reducing the labor intensity of workers.

[0017] 2. The guide sleeve moves via a slider and slide rail, and is rigidly locked by a locking assembly. This ensures extremely high positioning accuracy and connection rigidity of the guide sleeve in the working position, comparable to or even better than traditional bolt connections. The automated repositioning and locking process avoids human error and thread wear caused by frequent disassembly and assembly, reliably guaranteeing the repeatability of the guide sleeve's positioning accuracy after each locking, thereby ensuring the straightness and dimensional accuracy of deep hole machining. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the first state of a guide sleeve avoidance device for a deep hole drilling machine according to this embodiment.

[0019] Figure 2 This is a schematic diagram of the second state of a guide sleeve avoidance device for a deep hole drilling machine according to this embodiment.

[0020] Figure 3 This is a schematic diagram of the connection structure between the guide sleeve and the locking assembly in this embodiment.

[0021] Reference numerals: 1. Spindle seat; 11. Beveled surface; 12. Third slide rail; 2. Guide sleeve; 21. Connecting part; 22. Guide part; 23. First slider; 3. Fixed seat; 31. First slide rail; 4. Moving seat; 41. Right-angled triangle; 411. Second slider; 42. Plate; 421. Second slide rail; 5. Shifting drive assembly; 51. First rack; 52. Second rack; 53. Gear; 54. Servo motor; 6. Lateral drive assembly; 61. First cylinder; 62. Support seat; 63. Connector; 7. Locking assembly; 71. Second cylinder; 72. Abutment block; 721. Protrusion; 73. Locking plate; 731. Locking block; 74. Pressure plate; 741. Pressure block. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Reference Figure 1 and Figure 2 A guide sleeve avoidance device for a deep hole drilling machine includes a spindle seat 1, a guide sleeve 2, a fixed seat 3, a movable seat 4, a shifting drive assembly 5, a transverse drive assembly 6, and a locking assembly 7. The spindle seat 1 is rectangular and has a beveled surface 11 at one end. The fixed seat 3 is a rectangular plate and is fixed to and fitted against the beveled surface 11 of the spindle seat 1. The movable seat 4 includes a right-angled triangle 41 and a plate 42 fitted against the inclined side of the right-angled triangle 41. The beveled surface 11 of the spindle seat 1 and the inclined side of the right-angled triangle 41 have the same inclination angle, which is 30-60°, preferably 45°. The bottom edge of the right-angled triangle 41 is slidably connected to the top of the spindle seat 1. The transverse drive assembly 6 is connected to the vertical side of the right-angled triangle 41 to drive the right-angled triangle 41 to move along the length of the spindle seat 1 so that the plate 42 aligns with or moves away from the fixed seat 3.

[0024] Reference Figure 1 and Figure 2The shift drive assembly 5 includes a first rack 51, a second rack 52, a gear 53, and a servo motor 54. The guide sleeve 2 includes a guide portion 22 and a connecting portion 21 disposed on the upper side of the guide portion 22. The top surface of the fixed base 3 is provided with a first slide rail 31. There are two first slide rails 31, which are parallel and symmetrically arranged and both fit against the top surface of the fixed base 3. Their length direction extends towards the top side of the spindle seat 1. The first rack 51 is disposed between the two first slide rails 31 and is parallel to the first slide rails 31. The connecting portion 21 of the guide sleeve 2 is provided with two... Two symmetrically arranged first sliders 23 are slidably connected to two first slide rails 31, allowing the guide sleeve 2 to slide along the length of the slide rails. The connecting part 21 of the guide sleeve 2 has an installation slot between the two first sliders 23. The servo motor 54 is fixed to one side of the connecting part 21 of the guide sleeve 2, and its drive shaft passes through the connecting part 21 and is located in the installation slot. The gear 53 is located in the installation slot and connected to the drive shaft of the servo motor 54. The center of the gear 53 is on the same straight line as the shaft core of the drive shaft. The gear 53 meshes with the first rack 51.

[0025] Reference Figure 1 and Figure 2 The plate 42 is provided with two second slide rails 421, which are parallel and symmetrically arranged and parallel to the first slide rail 31. The model and size of the first slide rail 31 are the same as those of the second slide rail 421. A second rack 52 is provided on the plate 42 and located between the two second slide rails 421. The second rack 52 is parallel to the first rack 51, and its model and size are the same as those of the first rack 51. When the fixing seat 3 is connected to the plate 42, the first slide rail 31 is connected to the second slide rail 421, and the first rack 51 is connected to the second rack 52. The servo motor 54 drives the gear 53 to rotate, thereby enabling the gear 53 to drive the guide sleeve. 2. The entire assembly moves along the direction of the first rack 51 to the second rack 52, thereby transferring the guide sleeve 2 onto the moving seat 4. The guide sleeve 2 rises to avoid the drill bit. The moving seat 4 is driven away from the fixed seat 3 by the transverse drive assembly 6, thereby disconnecting the plate 42 from the fixed seat 3. The guide sleeve 2 is not easy to return to the fixed seat 3 without the servo motor 54 driving it. Under the drive of the transverse drive assembly 6, the fixed seat 3 and the plate 42 are reconnected. The guide sleeve 2 returns to the fixed seat 3 under the drive of the servo motor 54 to guide and support the drill bit. The inclined setting of the first rack 51 and the second rack 52 facilitates the climbing of the gear 53. The cooperation setting of the slide rail and the slider makes the guide sleeve 2 move stably and is not easy to deviate.

[0026] Reference Figure 1 and Figure 2Furthermore, the top side of the spindle seat 1 is provided with a third slide rail 12 whose length direction is consistent with the length direction of the spindle seat 1. There are two third slide rails 12, and the two third slide rails are parallel and symmetrically arranged. The bottom side of the right-angled triangle 41 is provided with two second slide rails 411, which are symmetrically arranged and slidably connected to the two third slide rails 12 respectively. The third slide rails 12 support the movement of the moving seat 4, making the movement of the moving seat 4 stable and not prone to deviation. The transverse drive assembly 6 includes a first hydraulic cylinder 61 and a support seat 62. The connector 63 and the support base 62 are located on the top side of the spindle seat 1. The connector 63 is located on the vertical side of the right-angled triangle 41. The tail end of the first hydraulic cylinder 61 is connected and fixed to the support base 62. The telescopic shaft of the first hydraulic cylinder 61 is connected to the connector 63. The telescopic shaft of the first hydraulic cylinder 61 extends and retracts in a direction parallel to the length direction of the third slide rail 12. The extension and retraction of the telescopic shaft of the first hydraulic cylinder 61 is used to move the movable seat 4 along the length direction of the third slide rail 12. The hydraulic cylinder provides a strong driving force to overcome the weight of the movable seat 4, the guide sleeve 2, and the servo motor 54.

[0027] Reference Figure 2 and Figure 3 The locking assembly 7 includes a second hydraulic cylinder 71, an abutment block 72, a locking plate 73, and a pressure plate 74. The abutment block 72 is fixed to the lower side of the front of the spindle seat 1. The locking plate 73 is disposed on the bottom side of the guide portion 22 of the guide sleeve 2. The top of the abutment block 72 is provided with a protrusion 721. When the guide sleeve 2 guides the drill bit, the bottom of the locking plate 73 abuts against the top of the abutment block 72, and the back side of the locking plate 73 abuts against the protrusion 721 of the abutment block 72. The second hydraulic cylinder 71 is fixed to the back side of the spindle seat 1, and... Its telescopic shaft passes through the main spindle seat 1 and the abutment block 72. The second oil cylinder 71 is connected to the pressure plate 74. The pressure plate 74 is driven by the second oil cylinder 71 to press against the front side of the locking plate 73, thereby locking the guide sleeve 2. This makes the guide sleeve 2 stable when guiding the drill bit, reducing the impact on the drilling accuracy of the drill bit. At the same time, the pressure plate 74 is separated from the abutment block 72 by the second oil cylinder 71 to unlock the guide sleeve 2. After unlocking, the guide sleeve 2 is driven by the servo motor 54 to change position and avoid the drill bit.

[0028] Reference Figure 3 Furthermore, a locking block 731 is provided on the front side of the locking plate 73. The top surface of the locking block 731 is a downward outward inclined surface. The top of the pressure plate 74 is provided with a pressure block 741 facing the main shaft seat 1. The bottom surface of the pressure block 741 is an inward inclined surface with an inclination angle matching the outward inclined surface of the locking block 731. The pressure block 741 presses against the front side of the locking block 731, and the inward inclined surface of the pressure block 741 fits against the outward inclined surface of the locking block 731. When the pressure block 741 presses against the front side of the locking plate 73, the pressure plate 74 presses the locking plate 73 downward through the cooperation of the inward inclined bottom surface of the pressure block 741 and the outward inclined top surface of the locking block 731, further locking the guide sleeve 2.

[0029] The implementation principle of the guide sleeve avoidance device for deep hole drilling machine tool of this application is as follows: the device realizes the automatic transfer and rigid locking of the guide sleeve 2 between the fixed seat 3 and the moving seat 4 through the organic cooperation of the displacement drive component 5, the transverse drive component 6 and the locking component 7. When avoidance is required, the servo motor 54 drives the gear 53 to roll along the first rack 51 on the fixed seat 3, which drives the guide sleeve 2, which is engaged with the first slide rail 31 via the slider, to move smoothly to the second slide rail 421 of the moving seat 4. Then, the transverse drive assembly 6 pulls the moving seat 4 to move along the third slide rail 12 at the top of the spindle seat 1, so that the guide sleeve 2 is completely removed from the working area. When the guiding function needs to be restored, the moving seat 4 is driven to reset by the first oil cylinder 61 and precisely docks with the fixed seat 3. The servo motor 54 drives the gear 53 in the opposite direction, so that the guide sleeve 2 returns to the working position on the fixed seat 3 along the second rack 52 and the first rack 51. Finally, the second oil cylinder 71 of the locking assembly 7 drives the pressure plate 74, which uses the inclined surface of the inner inclined surface of the pressure block 741 and the inclined surface of the locking block 731 to press the locking plate 73 down and press it against the abutment block 72 to form a rigid lock. The entire process is automated, which not only avoids the tedious operation of traditional bolt disassembly and assembly, greatly improving production efficiency and reducing labor intensity, but also ensures that the guide sleeve 2 has extremely high repeatability and connection rigidity in the working position through the slider-rail guiding mechanism and the inclined plane force-increasing locking mechanism, thus reliably guaranteeing the straightness and dimensional accuracy of deep hole machining.

[0030] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A guide sleeve avoidance device for a deep hole drilling machine, characterized in that: The device includes a spindle seat, a guide sleeve, a fixed seat, a movable seat, a shifting drive assembly, a transverse drive assembly, and a locking assembly. The fixed seat is fixed to one end of the spindle seat, and the movable seat is slidably disposed on the top side of the spindle seat. The transverse drive assembly is connected to the movable seat and is used to drive the movable seat to move along the length direction of the spindle seat so that the movable seat engages with or moves away from the fixed seat. The guide sleeve is slidably disposed on the fixed seat and is locked to or released from the fixed seat by the locking assembly. When the movable seat engages with the fixed seat, the guide sleeve is driven by the shifting drive assembly to move onto the movable seat or from the movable seat to the fixed seat.

2. The guide sleeve avoidance device for a deep hole drilling machine according to claim 1, characterized in that: The shifting drive assembly includes a first rack, a second rack, a gear, and a servo motor. The first rack is mounted on the fixed base, and the second rack is mounted on the movable base. The first rack and the second rack have the same model and size. The length extension direction of the first rack is the same as that of the second rack. When the fixed base and the movable base are connected, the first rack and the second rack are connected. The servo motor is fixed on the guide sleeve. The gear is mounted on the drive shaft of the servo motor, and the center of the gear is on the same straight line as the axis of the drive shaft of the servo motor. The gear meshes with the first rack.

3. The guide sleeve avoidance device for a deep hole drilling machine according to claim 2, characterized in that: Both the first rack and the second rack are inclined, and the inclination direction is towards the end of the spindle seat away from the fixed seat, with an inclination angle of 30-60°.

4. The guide sleeve avoidance device for a deep hole drilling machine according to claim 2, characterized in that: The fixed seat is provided with a first slide rail parallel to the first rack, and the movable seat is provided with a second slide rail parallel to the second rack. The first slide rail and the second slide rail have the same model and size. When the fixed seat and the movable seat are connected, the first slide rail and the second slide rail are connected. The guide sleeve is provided with a first slider, and the first slider is slidably connected to the first slide rail.

5. The guide sleeve avoidance device for a deep hole drilling machine according to claim 1, characterized in that: The top side of the spindle seat is provided with a third slide rail whose length extension direction is consistent with the length direction of the spindle seat, and the movable seat is provided with a second slider, which is slidably connected to the third slide rail.

6. The guide sleeve avoidance device for a deep hole drilling machine according to claim 5, characterized in that: The lateral drive assembly includes a first hydraulic cylinder, a support base, and a connector. The support base is disposed on the top side of the main spindle seat, and the connector is disposed on the movable seat. The tail end of the first hydraulic cylinder is connected and fixed to the support base, and the telescopic shaft of the first hydraulic cylinder is connected to the connector. The telescopic direction of the telescopic shaft of the first hydraulic cylinder is parallel to the length direction of the third slide rail.

7. The guide sleeve avoidance device for a deep hole drilling machine according to claim 1, characterized in that: The locking assembly includes a second hydraulic cylinder, an abutment block, a locking plate, and a pressure plate. The abutment block is fixed to the lower side of the front of the spindle seat. The locking plate is disposed at the bottom of the guide sleeve. The top of the abutment block has a protrusion. The bottom of the locking plate abuts against the top of the abutment block, and the back side of the locking plate abuts against the protrusion of the abutment block. The second hydraulic cylinder is fixed to the back side of the spindle seat, and its telescopic shaft passes through the spindle seat and the abutment block. The second hydraulic cylinder is connected to the pressure plate, and the pressure plate is driven by the second hydraulic cylinder to press against the front side of the locking plate.

8. A guide sleeve avoidance device for a deep hole drilling machine according to claim 7, characterized in that: A locking block is provided on the front side of the locking plate. The top surface of the locking block is an outwardly inclined surface facing downward. A pressure block is provided at the top of the pressure plate facing the main shaft seat. The bottom surface of the pressure block is an inwardly inclined surface with an inclination angle matching the outwardly inclined surface of the locking block. The pressure block abuts against the front side of the locking block, and the inwardly inclined surface of the pressure block fits against the outwardly inclined surface of the locking block.

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