Machine tool for machining inner hole of engine body

Abstract

The invention is suitable for the technical field of machine tools, and provides an engine body inner hole machining tool which comprises a rotatable lifting tool changing frame, reverse tool holding grooves are formed in the two ends of the tool changing frame, and extensible tool ejecting rods are arranged at the positions of the tool holding grooves of the tool changing frame; a rotatable scrap removing frame is arranged on the knife changing frame, sliding rails are installed at the two ends of the scrap removing frame, sliding rods capable of sliding along the sliding rails are elastically connected to the sliding rails, the two ends of the knife changing frame are connected with arc-shaped pieces which are used for pushing the sliding rods to slide downwards and are arranged in the reverse direction respectively, and scrap removing brushes which are arranged in the reverse direction are connected to the ends of the sliding rods respectively. Therefore, cuttings wound on the tool can be conveniently cleaned when the tool is replaced, the situation that the cuttings affect tool replacement is avoided, then the cuttings can be prevented from entering the tool magazine, and the situation that the cuttings fall into the tool magazine to damage parts in the tool magazine is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machine tools, in particular to an engine body inner hole machining machine tool. BACKGROUND

[0002] The engine body inner hole is mainly used for installing a cover body. By drilling holes in the engine body, the cover body can be conveniently installed, thereby realizing the sealing of the engine body. The cutter for drilling holes on the machine tool mainly consists of a drill bit part and a clamp part of the drill bit. The existing machine tool cutters can be detachably installed on the rotating main shaft assembly of the machine tool. When replacing the cutter, there are mainly two methods: manual replacement and automatic replacement by machine. The existing tool changing device for replacing the cutter directly clamps the cutter through the tool changing frame on the clamping groove position (the existing cutters that can be automatically replaced are all provided with clamping grooves that can be easily clamped by the tool changing frame). Then, through the rotating and lifting movement process, the cutter prepared in the tool magazine is replaced with the cutter on the rotating main shaft assembly of the machine tool.

[0003] At present, the existing tool changing device on the machine tool, such as the patent with the Chinese patent document number CN215919842U, discloses a machine tool tool changing device, which comprises a tool changing main body and a lifting cylinder for lifting the tool changing main body. The tool changing main body comprises a tool changing suspension and a rotating member for rotating the tool changing suspension. The tool changing suspension is provided with tool changing mechanisms with opposite openings on both sides. The tool changing mechanism comprises a locking groove and a clamping ring for limiting the axial sliding of the cutter. The inner wall of the locking groove is provided with a sliding groove. The tool changing main body can be rotated and lifted through the rotating member and the cylinder. The cutter can enter the sliding groove through the limiting member. The clamping ring can be extended to clamp the cutter through the driving mechanism. Then, the cutter is locked through the tool changing mechanism to avoid the cutter from falling during replacement. Thus, the tool changing main body can replace the cutter.

[0004] Although the tool changing device in the above-mentioned patent can replace the cutter of the machine tool, the tool changing device in the above-mentioned patent can only clamp and replace the cutter. When the cutter is wound with chips (the wound chips are in a filamentous shape, and the filamentous chips are easy to wind on the cutter), the chips are easy to be directly brought into the tool magazine. If the wound chips fall in the tool magazine, the parts in the tool magazine are easy to be damaged. The chips are mainly wound on the drill bit below the clamp. The end of the partially broken chip also has a certain probability to stretch upward to the clamping groove position of the cutter, which affects the clamping of the cutter by the tool changing device. SUMMARY

[0005] In view of the above defects, the engine body inner hole machining machine tool can process the inner hole of the engine body, further facilitate the cleaning of the cutting chips wound on the tool during tool replacement, avoid the influence of the cutting chips on tool replacement, and further avoid the cutting chips from entering the tool magazine, thereby avoiding the damage of the cutting chips to the components in the tool magazine, and the first gear, the second gear, the rack and the first driving member can facilitate the extension and retraction of the tool rod, and the tool rod does not need to be additionally provided with a driving device, thereby reducing the production cost.

[0006] In order to achieve the above purpose, the engine body inner hole machining machine tool comprises a rotatable and liftable tool changer, opposite holding grooves are arranged at both ends of the tool changer, and an extendable tool rod is arranged at the position of the holding groove of the tool changer; A rotating chip removal frame is arranged on the tool changer, sliding rails are mounted at both ends of the chip removal frame, sliding rods which can slide along the sliding rails are elastically connected to the sliding rails, and arc-shaped members which are reversely arranged and used for pushing the sliding rods to slide downward are connected to both ends of the tool changer, and the ends of the sliding rods are respectively connected to reversely arranged chip removal brushes. The tool changer drives the rotation of the arc-shaped members, the arc-shaped members push the sliding rods to slide downward, and the sliding rods drive the chip removal brushes to slide downward to take the cutting chips wound on the tool away from the tool.

[0007] According to the engine body inner hole machining machine tool, the first driving member for driving the rotation of the chip removal frame is mounted on the tool changer, the tool changer is internally provided with a cavity, the first gear driven by the first driving member is arranged in the cavity, the first gear is engaged with two second gears which are rotationally connected to the tool changer, the second gears are both engaged with racks which are slidingly connected to the tool changer, and the racks are respectively connected to the tool rods.

[0008] According to the engine body inner hole machining machine tool, the first elastic members for resetting the sliding rods are arranged on the sliding rails.

[0009] According to the engine body inner hole machining machine tool, the second elastic members are arranged between the tool rods and the racks, one end of the second elastic member is connected to the rack, and the other end of the second elastic member is connected to the tool rod.

[0010] According to the engine body inner hole machining machine tool, the chip removal brush comprises a support frame mounted on the end of the sliding rod, the support frame is connected with a fixed plate, a plurality of slidable insertion rods are arranged on the fixed plate, the insertion rods are provided with third elastic members for resetting the insertion rods, the fixed plate is elastically connected with a perforated plate, and the insertion rods can pass through the perforated plate.

[0011] According to the engine body inner hole machining machine tool, the sliding rails are connected with the chip storage barrels which are arranged below the chip removal brushes.

[0012] According to the engine body inner hole processing machine tool of the present application, the tool changer is provided with a second driving member for driving the rotation of the tool changer, the second driving member is connected to the end of the piston rod of the first cylinder, the first cylinder is installed on the support, the support is provided with a tool magazine for providing tools, the support is installed on the base of the drilling machine, the drilling machine is provided with a liftable and rotatable spindle assembly, and the spindle assembly is provided with detachable tools matched with the tool holding grooves.

[0013] According to the engine body inner hole processing machine tool of the present application, the base is provided with an electric cross slide, the electric cross slide is provided with a worktable for clamping and fixing workpieces, the worktable is provided with a plurality of symmetrical supporting blocks, and the worktable is provided with a plurality of symmetrical clamping mechanisms.

[0014] According to the engine body inner hole processing machine tool of the present application, the clamping mechanisms each include a second cylinder installed on the worktable, the end of the piston rod of the second cylinder is rotatably connected to one end of a clamping block, the middle position of the clamping block is rotatably connected to one end of a connecting rod, and the other end of the connecting rod is rotatably connected to the worktable.

[0015] The present application provides an engine body inner hole processing machine tool, which comprises a rotatable and liftable tool changer. The tool changer is provided to facilitate the transfer of tools, thereby facilitating the replacement of tools on the rotary spindle assembly and the tool magazine. The tool changer is provided with two reverse tool holding grooves at its two ends. The tool holding grooves are provided to facilitate clamping in the tool clamping groove part, thereby providing support for the tool. The two reverse tool holding grooves can simultaneously clamp the tools of the tool magazine and the tools on the rotary spindle assembly. The tool changer is provided with an extendable tool ejector rod at the position of the tool holding groove. The tool ejector rod can tightly clamp the tool after extension, thereby tightly fixing the tool in the tool holding groove and preventing the tool from falling during movement. The tool changer is provided with a first driving member for driving the rotation of the chip removal frame. The first driving member is provided to facilitate the rotation of the chip removal frame. The chip removal frame is provided with sliding rails at its two ends. The sliding rails are provided to guide the sliding rod. The sliding rails are slidably connected with a sliding rod that can slide along the sliding rail. The sliding rod can slide along the sliding rail, thereby facilitating the movement of the chip removal brush to remove the cuttings wound on the drill bit. The sliding rail is provided with a first elastic member for resetting the sliding rod. The first elastic member is provided to facilitate the automatic return of the sliding rod to the original position when there is no external force. The tool changer is provided with an arc-shaped member at its two ends. The arc-shaped member is provided to facilitate the sliding of the sliding rod along the sliding rail when the tool changer and the chip removal frame rotate relative to each other. The end of the sliding rod is connected with a reverse chip removal brush. The chip removal brush is provided to facilitate the removal of the cuttings wound on the drill bit. When the insertion rod of the chip removal brush is inserted into the cutting gap and then moves downward, it can drive the cuttings to separate from the drill bit. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present application; Figure 2 is a top view structural schematic diagram of the present application; Figure 3 is a partial structural schematic diagram of the tool changer position of the present application; Figure 4 is a structural schematic diagram of part A of Figure 3 Figure 5 is a top view structural schematic diagram of Figure 3 Figure 6 is a structural sectional view of the tool changer; Figure 7 is a structural schematic diagram of part B of Figure 1 Figure 8 is a partial structural schematic diagram of the chip removal brush when the chip removal brush and the tool changer are in the same vertical plane; Figure 9 is a structural sectional view of the chip removal brush part; In the drawings: 1 - base, 2 - electric cross slide, 3 - worktable, 4 - tool magazine, 5 - rotating spindle assembly, 6 - support, 7 - tool, 8 - insertion rod, 9 - second driving member, 10 - tool changer, 11 - tool holding groove, 12 - top tool rod, 13 - arc-shaped member, 14 - chip removal brush, 15 - chip storage barrel, 16 - slide rail, 17 - sliding rod, 18 - support frame, 19 - fixed plate, 20 - perforated plate, 21 - first elastic member, 22 - second elastic member, 23 - rack, 24 - first gear, 25 - second gear, 26 - support block, 27 - second air cylinder, 28 - clamping block, 29 - connecting rod, 30 - third elastic member, 31 - moving rod, 32 - return spring. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples, and it should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0018] Referring to Figures 1-6 ​​​The engine body inner hole processing machine tool comprises a rotatable and liftable tool changer 10, the tool changer 10 is provided to facilitate tool replacement, the lifting and lowering movement of the tool changer 10 is used for tool installation and disassembly, and the rotation of the tool changer 10 is used for position replacement of two tools 7 on the tool changer 10. The tool changer 10 is provided with reverse tool holding grooves 11 at both ends, the tool holding grooves 11 are provided to facilitate clamping of the clamping groove part of the tool 7, to facilitate vertical support of the tool 7, and the tool holding grooves 11 can provide horizontal one-side support for the tool 7, and the opposite tool holding grooves 11 can facilitate clamping of two tools 7 on the same straight line when the tool changer 10 is rotated to a certain angle. The tool holding grooves 11 of the tool changer 10 are provided with extendable tool pressing rods 12, the tool pressing rods 12 are provided to facilitate pressing of the tool 7, which is beneficial to pressing and fixing the tool 7 in the tool holding groove 11, and avoids disengagement of the tool 7 from the tool holding groove 11 due to rotation of the tool changer 10.

[0019] The tool changer 10 is provided with a first driving member for driving rotation of the chip removal frame 14, and the rotation center line of the rotating movement of the chip removal frame 14 coincides with the rotation center line of the rotating movement of the tool changer 10. The chip removal frame 14 is provided with sliding rails 16 at both ends, the sliding rails 16 are slidably connected with sliding rods 17 which can slide along the sliding rails 16, the sliding rods 17 can move linearly along the sliding rails 16, facilitating downward movement of the chip removal brush while taking away the cutting chips wound on the drill bit. The sliding rails 16 are provided with first elastic members 21 for resetting of the sliding rods 17, the first elastic members 21 are provided to facilitate automatic resetting of the sliding rods 17 when losing external force. The tool changer 10 is respectively connected with arc-shaped members 13 arranged in reverse at both ends for pushing the sliding rods 17 to slide downward, the arc-shaped members 13 are provided to push the sliding rods 17 to slide downward when the chip removal frame 14 and the tool changer 10 rotate relative to each other. The sliding rods 17 are respectively connected with chip removal brushes arranged in reverse, the chip removal brushes are provided to facilitate downward movement of the cutting chips wound on the drill bit.

[0020] Referring to Figures 1-9Further, the tool changer 10 is internally provided with a cavity, the cavity is provided with a first gear 24 driven by a first driving element, the first gear 24 is engaged with two second gears 25 rotatably connected to the tool changer 10, the first gear 24 and the second gear 25 cooperate to conveniently drive the rack 23 to move linearly, thereby facilitating the extension and retraction of the tool holder 12, the tool holder 12 does not need to be additionally provided with a driving device, thereby reducing the production cost, the second gear 25 is engaged with the rack 23 which is slidingly connected to the tool changer 10, and the rack 23 is connected to the tool holder 12. The second elastic element 22 is arranged between the tool holder 12 and the rack 23, one end of the second elastic element 22 is connected to the rack 23, and the other end of the second elastic element 22 is connected to the tool holder 12. The arrangement of the second elastic element 22 is beneficial to change the clamping of the tool holder 12 on the tool 7 from rigid clamping to elastic clamping, thereby further avoiding damage to the tool 7.

[0021] The scrap removing brush comprises a support frame 18 mounted on the end of the sliding rod 17, the support frame 18 can conveniently provide support for the fixed plate 19, the support frame 18 is connected with the fixed plate 19, a plurality of slidable insertion rods 8 are provided on the fixed plate 19, the insertion rods 8 can be conveniently inserted into the gap between the wound cuttings, thereby facilitating the cuttings to fall away from the drill bit, the insertion rod 8 is provided with a third elastic element 30 for resetting the insertion rod 8, the third elastic element 30 is sleeved on the outside of the insertion rod 8, one end of the third elastic element 30 is connected to the insertion rod 8, and the other end of the third elastic element 30 is connected to the fixed plate 19, the third elastic element 30 is located on the side of the fixed plate 19 away from the perforated plate 20, the third elastic element 30 can conveniently reset the insertion rod 8, and can avoid the rigid collision between the insertion rod 8 and the drill bit, thereby reducing the probability of damage to the insertion rod 8 or the drill bit, the fixed plate 19 is elastically connected with the perforated plate 20 (the fixed plate 19 and the perforated plate 20 can be elastically connected by a reset spring 32, the perforated plate 20 is connected to one end of a plurality of moving rods 31, the moving rods 31 pass through the fixed plate 19, the moving rods 31 can slide linearly on the fixed plate 19, the reset spring 32 is sleeved on the moving rod 31, one end of the reset spring 32 is connected to the fixed plate 19, and the other end of the reset spring 32 is connected to the perforated plate 20, the arrangement of the moving rod 31 can facilitate the linear movement of the perforated plate 20, and is beneficial to avoid the deviation of the position of the perforated plate 20, and the moving rod 31 will not be separated from the fixed plate 19), the insertion rod 8 can pass through the perforated plate 20, the initial position of the perforated plate 20 is located at the end of the insertion rod 8, and when the perforated plate 20 is reset to the initial position, the cuttings on the insertion rod 8 can be conveniently pushed away from the insertion rod 8, thereby avoiding that the cuttings are located on the insertion rod 8 for a long time to affect the cleaning of the next cuttings, and the sliding rail 16 is connected with a cuttings storage barrel 15 located below the scrap removing brush, the arrangement of the cuttings storage barrel 15 can conveniently collect the cuttings falling from the insertion rod 8, thereby avoiding that the cuttings fall on the workpiece.

[0022] Referring to Figures 1-7Further, the tool changer 10 is provided with a second driving element 9 for driving the rotation of the tool changer 10, which can facilitate the rotation of the tool changer 10, and the rotation of the tool changer 10 can replace the positions of the two tools 7, facilitating the replacement of the tools 7. The second driving element 9 is connected to the end of the piston rod of a first cylinder (not shown in the figure), and the first cylinder is used to drive the lifting of the second driving element 9 and the tool changer 10, facilitating the installation and removal of the tools 7. The first cylinder is installed on the support 6, and the support 6 is used to provide support for the first cylinder. The support 6 is installed on the base 1 of the drilling machine, and the drilling machine is provided with a liftable rotating spindle assembly 5 (the lifting movement of the rotating spindle assembly 5 will not be affected by the tool changer 10, the chip removal frame 14, the chip storage barrel 15 and other components), which is used to drive the rotation of the tools 7 for drilling. The rotating spindle assembly 5 is provided with a detachable tool 7 matched with the tool holding groove 11 (the installation of the detachable tool 7 on the rotating spindle assembly 5 is prior art, and will not be described here).

[0023] The base 1 is installed with an electric cross slide 2, and the electric cross slide 2 is installed with a workbench 3 for clamping and fixing workpieces. The electric cross slide 2 can facilitate the movement of the workbench 3, and in turn facilitate the drilling of workpieces at different positions on the workbench 3. The workbench 3 is provided with a plurality of symmetrical supporting blocks 26, which can facilitate the support of workpieces. The workbench 3 is provided with a plurality of symmetrical clamping mechanisms, which can facilitate the clamping and fixing of workpieces, and can prevent the movement of workpieces during drilling.

[0024] Each clamping mechanism includes a second cylinder 27 installed on the workbench 3, and the end of the piston rod of the second cylinder 27 is rotatably connected to one end of a clamping block 28. The second cylinder 27 is used to provide power for the movement of the clamping block 28, facilitating the clamping of the clamping block 28 to the workpiece. The middle position of the clamping block 28 is rotatably connected to one end of a connecting rod 29, and the other end of the connecting rod 29 is rotatably connected to the workbench 3. The connecting rod 29 is used to limit the movement of the clamping block 28, facilitating the stable clamping of the clamping block 28 to the workpiece.

[0025] Referring to Figures 1-9 Specifically, the first elastic element 21, the second elastic element 22 and the third elastic element 30 are all springs, and the first driving element and the second driving element 9 are both servo motors.

[0026] Working principle: when the drill bit is wound with a group of chips for tool changing, the tool 7 on the rotating spindle assembly 5 is raised to the same height position as the tool 7 on the tool magazine 4 to be used, the tool changer 10 drives the chip removal frame 14 to rotate counterclockwise (counterclockwise, clockwise, clockwise Figure 5 ) after a certain angle, the multi-hole plate 20 gradually approaches the fixed plate 19 under the pushing of the group of chips (the chips are made of metal and have an irregular spiral strip structure, when the chips are wound on the drill bit, the chips are pushed against the multi-hole plate 20 under the support of the drill bit, and the deformation of the group of chips does not affect the insertion of the insertion rod 8 into the gap of the chips), and part of the insertion rod 8 inserted into the gap of the chips is not pushed and does not slide on the fixed plate 19, at this time part of the insertion rod 8 is inserted into the gap of the group of chips, at this time the tool changer 10 continues to rotate counterclockwise, and the chip removal frame 14 remains stationary with the tool 7 as a reference (the two top knife rods 12 are gradually retracted into the tool changer 10), the sliding rod 17 moves downward along the sliding rail 16 under the push of the arc-shaped part 13, the insertion rod 8 drives the group of chips to move downward and away from the drill bit, and the chips on the insertion rod 8 are pushed away from the insertion rod 8 by the multi-hole plate 20 and fall into the chip storage barrel 15 (the group of wound chips can completely separate from the drill bit under the drive of the insertion rod 8), when the chip removal frame 14 and the tool changer 10 are located in the same vertical plane (the top knife rod 12 is completely retracted into the tool changer 10), the chip removal brush and the tool 7 have sufficient space for the tool 7 to pass through (for reference Figure 8 ), at this time the tool changer 10 drives the chip removal frame 14 to rotate counterclockwise to synchronously abut the two tools 7 in the two tool holding grooves 11, the tool changer 10 remains stationary, the chip removal frame 14 rotates counterclockwise to make the two top knife rods 12 extend to clamp the tools 7, the tool changer 10 descends to disassemble the two tools 7, after disassembly, the tool changer 10 rotates counterclockwise by 180 degrees to replace the positions of the two tools 7 (the tool changer 10 drives the chip removal frame 14 to synchronously rotate counterclockwise by 180 degrees), the tool changer 10 rises to install the two tools 7, after installation, the tool changer 10 remains stationary, and the chip removal frame 14 rotates clockwise to be located in the same vertical plane as the tool changer 10 (the chip removal brush and the tool 7 have sufficient space for the tool 7 to pass through, and the top knife rod 12 is completely retracted into the tool changer 10), at this time the tool changer 10 drives the chip removal frame 14 to synchronously rotate clockwise, and after the tool changer 10 returns to the initial position, the tool changer 10 remains stationary, and the chip removal frame 14 rotates counterclockwise to return to the original position.

[0027] In summary, the engine body hole processing machine tool provided by the application can conveniently replace the tool on the rotating spindle assembly with the tool on the tool magazine, the two reverse tool holding grooves can conveniently clamp the tool on the tool magazine and the tool on the rotating spindle assembly at the same time, the tool can be tightly fixed in the tool holding groove after the tool ejector rod is extended, so that the tool is prevented from falling during movement, the setting of the chip removal brush can conveniently remove the chips wound on the drill, the insertion of the chip removal brush into the filamentous chip gap and then the downward movement can drive the chips from the drill, and this is beneficial to preventing the chips from entering the tool magazine.

[0028] Of course, the present application can have other various embodiments, and those skilled in the art can make various corresponding changes and modifications according to the present application without departing from the spirit and essence of the present application, but these corresponding changes and modifications should all belong to the protection scope of the claims attached to the present application.

Claims

1. An engine block bore machining machine tool, characterized by, The tool changer is rotatably lifted, and opposite holding grooves are arranged at both ends of the tool changer, and a top tool holder is arranged at the position of the holding groove of the tool changer. A rotating chip removal device is arranged on the tool changer, and sliding rails are arranged at both ends of the chip removal device, and sliding rods are elastically connected to the sliding rails. The tool changer drives the arc-shaped members to rotate, and the arc-shaped members push the sliding rods to slide down, and the sliding rods drive the chip removal brushes to slide down and remove the chips wound on the tool.

2. The engine block bore machining machine of claim 1, wherein, A first driving member is arranged on the tool changer to drive the rotation of the chip removal device, and a cavity is arranged in the tool changer, and a first gear driven by the first driving member is arranged in the cavity.

3. The engine block bore machining machine of claim 1, wherein, First elastic members are arranged on the sliding rails to reset the sliding rods.

4. The engine block bore machining machine of claim 2, wherein, Second elastic members are arranged between the top tool holders and the racks, and one end of the second elastic members is connected to the racks, and the other end of the second elastic members is connected to the top tool holders.

5. The engine block bore machining machine of claim 1, wherein, The chip removal brush comprises a support frame arranged at the end of the sliding rod, and a fixed plate is connected to the support frame, and a plurality of slidable insertion rods are arranged on the fixed plate.

6. The engine block bore machining machine of claim 1, wherein, The sliding rails are connected to scrap storage barrels below the chip removal brushes.

7. The engine block bore machining machine of claim 1, wherein, The tool changer is provided with a second driving member to drive the rotation of the tool changer, and the second driving member is connected to the end of the piston rod of a first air cylinder, and the first air cylinder is arranged on a support, and a tool magazine is arranged on the support to provide tools.

8. The engine block bore machining machine of claim 7, wherein, An electric cross slide is arranged on the base, and a workbench is arranged on the electric cross slide to clamp and fix a workpiece, and the workbench is provided with a plurality of symmetrical support blocks.

9. The engine block bore machining machine of claim 8, wherein, The clamping mechanism comprises a second air cylinder arranged on the workbench, and one end of a clamping block is rotatably connected to the end of the piston rod of the second air cylinder, and one end of a connecting rod is rotatably connected to the middle position of the clamping block, and the other end of the connecting rod is rotatably connected to the workbench.

Images