CN213614317U

CN213614317U - Fine deep hole machining device

Info

Publication number: CN213614317U
Application number: CN202022810065.6U
Authority: CN
Inventors: 洪泽斌; 蔡汉生; 黄展源; 蔡桂阳; 郑成杰; 谢伟佳; 林凯珊; 杨柱峰
Original assignee: Greatoo Sino German Robots And Intelligent Manufacturing Co ltd; Guangdong Juou Cloud Control Technology Co ltd; Greatoo Intelligent Equipment Inc
Current assignee: Greatoo Sino German Robots And Intelligent Manufacturing Co ltd; Guangdong Juou Cloud Control Technology Co ltd; Greatoo Intelligent Equipment Inc
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-07-06
Anticipated expiration: 2030-11-27

Abstract

The utility model relates to a fine deep hole processing device, which comprises a base, a spindle seat, a spindle and a guide arm; the upper surface of the base is provided with a spindle seat linear guide rail for the spindle seat to slide, a middle concave part of the base is provided with a spindle seat driving mechanism, and the spindle is driven by the spindle seat driving mechanism to slide left and right along with the spindle seat along the spindle seat linear guide rail; the guide arm comprises a cantilever and a sliding arm which are connected into a whole, a guide sleeve for the gun drill to contact with the surface of a workpiece during drilling is arranged at the front end of the cantilever, the inner diameter of the guide sleeve is slightly larger than the diameter of the gun drill to form clearance fit, and high-pressure oil pushes chips of a drilling cutting pin of the gun drill into a chip removal straight groove of the gun drill to flow into a chip removal chamber; the lower side of the sliding arm is slidably mounted on the spindle seat through a sliding arm linear guide rail, and a cylinder mounted on the spindle seat is in contact with a top block arranged on the lower side of the sliding arm through a cylinder push rod to form pushing connection of the cylinder to the guide arm. The drill bit has the advantages of good rigidity, uniform cutting, long service life of the drill bit and high drilling efficiency.

Description

Fine deep hole machining device

Technical Field

The utility model belongs to the technical field of the machining makes and specifically relates to a slight deep hole processingequipment is related to.

Background

Deep hole machining is a hole having a hole length and a hole diameter of greater than 5. The processing device and equipment for the precise deep hole with the length-diameter ratio larger than 10 are different from the traditional hole processing mode, mainly depend on specific drilling technologies such as gun drill, BTA drill, jet-suction drill and the like, represent advanced and efficient hole processing technologies, can obtain a precise processing effect through one-time feed, and can obtain a precise processed hole with accurate position, high dimensional precision such as straightness, roundness and the like and high surface finish.

With the rapid development of the machine manufacturing industry, deep hole processing technology and equipment originally limited to specific fields such as military industry, aerospace and the like are widely applied to various industries in China, such as gun drills. Gun drills are an effective deep hole machining tool, and the machining range is wide, and the gun drills can be used for deep hole machining of die steel, glass fibers, plastics such as Teflon (Teflon) and the like, and high-strength alloys such as P20 and inconel. In deep hole machining with strict requirements on tolerance and surface roughness, the gun drill can ensure the size precision, the position precision and the straightness of the hole. In order for a gun drill to achieve satisfactory results in deep hole drilling, the performance of the gun drill system, including tools, fixtures, accessories, workpieces, control units, coolant, and operating procedures, must be mastered. According to the structure of the workpiece, the hardness of the workpiece material and the working condition and quality requirement of the deep hole processing machine tool, the excellent processing performance can be obtained only by selecting proper cutting speed, feeding amount, geometrical parameters of a cutter, a hard alloy mark and parameters of cooling liquid.

The fine deep hole with the diameter of less than 3.0mm is processed, and the requirements on the rigidity and the manufacturing precision of drilling equipment, the filtering precision of cooling liquid, the pressure and the flow of the cooling liquid and the rotating speed of a main shaft are higher.

In this regard, it is important to design a device suitable for fine deep hole processing with a diameter of 3.0mm or less.

Disclosure of Invention

The utility model aims at the above problem, provide a rigidity is good, assembly accuracy is high, the cutting is even, improve the slight deep hole processingequipment of gun drill life-span and drilling efficiency.

The purpose of the utility model is realized like this: comprises a base, a spindle seat, a spindle and a guide arm; the section of the base is approximately in a concave shape, the upper surfaces of the convex parts on the front side and the rear side of the base are provided with a spindle seat linear guide rail for a spindle seat to slide, the concave part in the middle of the base is provided with a spindle seat driving mechanism, the spindle is an electric spindle, and the spindle slides left and right along the spindle seat linear guide rail along with the spindle seat under the driving of the spindle seat driving mechanism; the front end of the main shaft is connected with a gun drill, the guide arm is approximately L-shaped and comprises a cantilever and a sliding arm which are connected into a whole, the lower end of the cantilever is provided with a chip removal chamber for the gun drill to pass through and collect chips, the front end of the cantilever is provided with a guide sleeve for the gun drill to contact with the surface of a workpiece during drilling, the inner diameter of the guide sleeve is slightly larger than the diameter of the gun drill to form clearance fit, a fine through hole of a drill bit of the gun drill is communicated with a shaft core hole of the main shaft, high-pressure oil is provided by a high-pressure oil pipe, and the high-pressure oil pushes the chips cut by drilling into a V-shaped chip; the lower side of the sliding arm is slidably mounted on the spindle seat through a sliding arm linear guide rail, and a cylinder mounted on the spindle seat is in contact with a top block arranged on the lower side of the sliding arm through a cylinder push rod to form pushing connection of the cylinder to the guide arm.

The lower side of the sliding arm is slidably mounted on the spindle seat through a sliding arm linear guide rail, and a cylinder mounted on the spindle seat is in contact with a top block arranged on the lower side of the sliding arm through a cylinder push rod to form pushing connection of the cylinder to the guide arm.

The utility model discloses, be provided with fine setting stop gear between arm and the spindle drum of sliding, fine setting stop gear includes stroke fine setting mechanism and dog pop-up mechanism, and stroke fine setting mechanism sets up on the arm of sliding, and dog pop-up mechanism sets up on the spindle drum.

The utility model discloses, the fine-tuning of stroke includes guide rail, spacing slider, adjusting screw and magnetic grid chi, and spacing slider wears to establish on the guide rail, and the guide rail is fixed by the left guide rail seat at both ends, right guide rail seat, and spacing slider passes through adjusting screw and adjusts left and right stroke; the stop block ejecting mechanism comprises a limit stop block and a small air cylinder, the small air cylinder controls the limit stop block to eject out and retract through a push rod of the small air cylinder, and when the limit stop block is ejected out, the limit stop block blocks the limit slide block to form a stroke limit structure of the sliding arm.

The utility model discloses, install magnetic grid chi displacement sensor on the spacing slider, magnetic grid chi displacement sensor's displacement information shows through stroke digital display table.

The utility model discloses, spindle drum actuating mechanism includes the motor and by the lead screw that lead screw tailstock and lead screw headstock supported, the output of motor passes through the shaft coupling and is connected with the head locking of lead screw.

The utility model discloses, the position that the main shaft is close to the chip removal room is provided with the back cover of gun drill, and the chip removal room sets up the chip guide groove downwards, and the position that the base corresponds the chip guide groove is provided with the chip receiving groove.

The utility model has the advantages that the guide arm and the main shaft seat are of an integrated structure, and the rigidity is good and the assembly precision is high; the cylinder is arranged in the guide arm, so that stable thrust can be provided during drilling, the end surface of the guide sleeve is tightly attached to the surface of a workpiece, a sealing effect is achieved, high-pressure oil is forced to be discharged from a chip guide groove of a chip removal chamber of the gun drill only, and smooth drilling and cutting are ensured; the drilling action adopts servo motor drive, can set up multistage drilling speed, and drilling speed is steady, cooperates the high rotational speed performance of electric main shaft and controls the degree of consistency of cutting effectively, improves the life-span and the drilling efficiency of gun drill. The drill bit has the advantages of good rigidity, high assembly precision, uniform cutting, long service life of the drill bit and high drilling efficiency.

The following examples are provided to further illustrate the present invention in conjunction with the accompanying drawings.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is a schematic structural view of the embodiment of FIG. 1;

fig. 3 is a schematic structural diagram of the fine adjustment limiting mechanism of the embodiment of fig. 1.

In the figure, 1, a base; 2. a main shaft seat; 3. a main shaft; 4. a guide arm; 5. a linear guide rail of the spindle base; 6. gun drilling; 7. a spindle bore; 8. a cantilever; 9. a slider arm; 10. a guide sleeve; 11. a sliding arm linear guide rail; 12. a cylinder; 13. a cylinder push rod; 14. a top block; 15. a guide rail; 16. a limiting slide block; 17. adjusting the screw rod; 18. a magnetic grid ruler; 19. a left guide rail seat; 20. a right guide rail seat; 21. a limit stop block; 22. a small cylinder; 23. a small cylinder push rod; 24. a travel distance digital display meter; 25. a motor; 26. a screw rod tailstock; 27. a screw head seat; 28. a screw rod; 29. a coupling; 30. a chip removal chamber; 31. a rear sleeve; 32. a chip guide groove; 33. a chip receiving groove; 34. a magnetic scale displacement sensor; 35. a high pressure oil pipe.

Detailed Description

Referring to fig. 1 to 3, the present embodiment is a fine deep hole processing apparatus, including a base 1, a spindle base 2, a spindle 3, and a guide arm 4; the section of the base is approximately in a concave shape, the upper surfaces of the convex parts at the front side and the rear side of the base are provided with a spindle seat linear guide rail 5 for a spindle seat to slide, the concave part in the middle of the base is provided with a spindle seat driving mechanism, the spindle is an electric spindle, and the spindle slides left and right along the spindle seat linear guide rail along with the spindle seat under the driving of the spindle seat driving mechanism; the front end of the main shaft is connected with a gun drill 6, the guide arm is approximately L-shaped and comprises a cantilever 8 and a sliding arm 9 which are connected into a whole, the lower end of the cantilever is provided with a chip removal chamber 30 for the gun drill to pass through and collect chips, the front end of the cantilever is provided with a guide sleeve 10 for the gun drill to be in contact with the surface of a workpiece during drilling, the inner diameter of the guide sleeve is slightly larger than the diameter of the gun drill to form clearance fit, a fine through hole of a drill bit of the gun drill is communicated with a shaft core hole 7 of the main shaft, high-pressure oil is provided by a high-pressure oil pipe 35, and the chips cut by the drill hole are pushed into a V-shaped chip; the lower side of the sliding arm is slidably mounted on a main shaft seat through a sliding arm linear guide rail 11, and a cylinder 12 mounted on the main shaft seat is in contact with a top block 14 arranged on the lower side of the sliding arm through a cylinder push rod 13 to form pushing connection of the cylinder to the guide arm; a fine adjustment limiting mechanism is arranged between the sliding arm and the spindle seat, the fine adjustment limiting mechanism comprises a stroke fine adjustment mechanism and a stop block ejection mechanism, the stroke fine adjustment mechanism is arranged on the sliding arm, and the stop block ejection mechanisms are arranged on the spindle seat and are arranged on the same side; the stroke fine adjustment mechanism comprises a guide rail 15, a limit slide block 16, an adjusting screw rod 17 and a magnetic grid ruler 18, the limit slide block is arranged on the guide rail in a penetrating way, the guide rail is fixed by a left guide rail seat 19 and a right guide rail seat 20 at two ends, and the limit slide block adjusts the left and right strokes through the adjusting screw rod; the stop block ejecting mechanism comprises a limit stop block 21 and a small air cylinder 22, the small air cylinder controls the limit stop block to eject and retract through a small air cylinder push rod 23, and when the limit stop block is ejected, the limit stop block clamps a limit slide block to form a stroke limit structure of the sliding arm; a magnetic grid ruler displacement sensor 34 is installed on the limiting slide block, and displacement information of the magnetic grid ruler displacement sensor is displayed through the stroke digital display meter 24; the spindle seat driving mechanism comprises a motor 25 and a screw 28 supported by a screw tail seat 26 and a screw head seat 27, and the output end of the motor is in locking connection with the head of the screw through a coupling 29; the part of the main shaft close to the chip removal chamber is provided with a rear sleeve 31 of the gun drill, the chip removal chamber is downwards provided with a chip guide groove 32, and the part of the base corresponding to the chip guide groove is provided with a chip receiving groove 33.

The utility model discloses a drilling cutting process is like: firstly, a gun drill 6 is arranged on a main shaft 3 and locked, then the tail end of an air cylinder 12 is ventilated to push out a guide arm 4, and the end surface of a guide sleeve 10 at the front end of the guide arm is aligned with the tool tip of the gun drill 6 by adjusting a fine adjustment nut of a fine adjustment limiting mechanism; then, moving the fine deep hole machining device to the machined workpiece to enable the end face of the guide sleeve to be just in contact with the surface of the workpiece, and starting the main shaft and the high-pressure deep hole drilling oil; and then, the motor 25 drives the screw rod 28 to rotate, the forward drilling linear motion of the main shaft is converted, when the drilling depth is reached, the main shaft stops rotating, the high-pressure deep hole drilling oil stops, the motor rotates reversely, the main shaft and the gun drill are driven to withdraw, and the drilling is finished. During the drilling and withdrawing process, the cylinder is ejected forwards all the time, high-pressure deep hole drilling oil is punched out of the inner hole of the gun drill, and the cutting pin scraps are extruded by the high-pressure oil and are guided to the chip removal chamber 30 through the gun drill guide sleeve.

Claims

1. The utility model provides a slight BTA device which characterized in that: comprises a base (1), a spindle seat (2), a spindle (3) and a guide arm (4);

the section of the base is approximately in a concave shape, the upper surfaces of the convex parts on the front side and the rear side of the base are provided with a spindle seat linear guide rail (5) for the spindle seat to slide, the concave part in the middle of the base is provided with a spindle seat driving mechanism, the spindle is an electric spindle, and the spindle is driven by the spindle seat driving mechanism to slide left and right along the spindle seat linear guide rail along with the spindle seat;

the front end of the main shaft is connected with a gun drill (6), the guide arm is approximately L-shaped and comprises a cantilever (8) and a sliding arm (9) which are connected into a whole, a chip removal chamber (30) for the gun drill to pass through and collect chips is arranged at the lower end of the cantilever, a guide sleeve (10) which is contacted with the surface of a workpiece when the gun drill drills is arranged at the front end of the cantilever, the inner diameter of the guide sleeve is slightly larger than the diameter of the gun drill to form clearance fit, a fine through hole of a drill bit of the gun drill is communicated with a shaft core hole (7) of the main shaft, high-pressure oil is provided by a high-pressure oil pipe (35), and the chips cut by drilling are pushed into a V-shaped chip removal straight groove of the gun;

the lower side of the sliding arm is slidably mounted on a spindle base through a sliding arm linear guide rail (11), and a cylinder (12) mounted on the spindle base is in contact with a top block (14) arranged on the lower side of the sliding arm through a cylinder push rod (13) to form pushing connection of the cylinder to the guide arm.

2. The fine deep-hole machining apparatus according to claim 1, characterized in that: a fine adjustment limiting mechanism is arranged between the sliding arm and the spindle seat and comprises a stroke fine adjustment mechanism and a stop block ejection mechanism, the stroke fine adjustment mechanism is arranged on the sliding arm, and the stop block ejection mechanism is arranged on the spindle seat.

3. The fine deep-hole machining apparatus according to claim 2, characterized in that: the stroke fine adjustment mechanism comprises a guide rail (15), a limiting slide block (16), an adjusting screw rod (17) and a magnetic grid ruler (18), the limiting slide block is arranged on the guide rail in a penetrating mode, the guide rail is fixed by a left guide rail seat (19) and a right guide rail seat (20) at two ends, and the limiting slide block adjusts left and right strokes through the adjusting screw rod; the stop block ejecting mechanism comprises a limit stop block (21) and a small air cylinder (22), the small air cylinder controls the limit stop block to eject and retract through a small air cylinder push rod (23), and when the limit stop block is ejected, the limit stop block clamps a limit slide block to form a stroke limit structure of the sliding arm.

4. The fine deep-hole machining apparatus according to claim 3, characterized in that: and a magnetic grid ruler displacement sensor (34) is installed on the limiting sliding block, and displacement information of the magnetic grid ruler displacement sensor is displayed through a stroke digital display meter (24).

5. The fine deep-hole machining apparatus according to claim 1, characterized in that: the spindle seat driving mechanism comprises a motor (25) and a screw rod (28) supported by a screw rod tailstock (26) and a screw rod headstock (27), and the output end of the motor is in locking connection with the head of the screw rod through a coupler (29).

6. The fine deep-hole machining apparatus according to claim 1, characterized in that: the position that the main shaft is close to the chip removal room is provided with back cover (31) of gun drill, and the chip removal room sets up chip guide groove (32) downwards, the position that the base corresponds the chip guide groove is provided with chip receiving groove (33).