Engine block bore machining machine

Abstract

The application belongs to the technical field of machine tools and discloses an engine body hole machining machine tool, which comprises a rotatable and liftable tool changer, reverse holding grooves are arranged at the two ends of the tool changer, and extendable tool top rods are arranged at the positions of the holding grooves of the tool changer; a rotatable chip removal frame is arranged on the tool changer, sliding rails are mounted at the two ends of the chip removal frame, sliding rods which can slide along the sliding rails are elastically connected to the sliding rails, arc-shaped members which are reversely arranged and used for pushing the sliding rods to slide downwards are respectively connected to the two ends of the tool changer, and the ends of the sliding rods are respectively connected to reversely arranged chip removal brushes, so that the application can conveniently clean the cuttings wound on the tool during tool replacement, avoid the influence of the cuttings on tool replacement, and further avoid the cuttings from entering the tool magazine and falling in the tool magazine to damage the components in the tool magazine.

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 conveniently clean the cutting chips wound on the tool during tool replacement, avoid the influence of the cutting chips on tool replacement, further avoid the cutting chips from entering the tool magazine, further avoid the cutting chips from falling and damaging the components in the tool magazine, the first gear, the second gear, the rack and the first driving member can conveniently extend and retract the tool ejector rod, and the tool ejector 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, reverse holding grooves are arranged at both ends of the tool changer, and an extendable tool ejector rod is arranged at the position of the holding groove of the tool changer.

[0007] 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 respectively connected to both ends of the tool changer, and the ends of the sliding rods are respectively connected to reversely arranged chip removal brushes.

[0008] 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.

[0009] 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 the racks which are slidingly connected to the tool changer, and the racks are respectively connected to the tool ejector rods.

[0010] 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.

[0011] According to the engine body inner hole machining machine tool, the second elastic members are arranged between the tool ejector 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 ejector rod.

[0012] 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 all provided with the third elastic members for resetting the insertion rods, the fixed plate is elastically connected with a porous plate, and the insertion rods can all pass through the porous plate.

[0013] According to the engine body inner hole processing machine tool, the slide rails are connected with the scrap storage barrels below the scrap removing brushes.

[0014] According to the engine body inner hole processing machine tool, the tool changer is provided with a second driving element for driving the rotation of the tool changer, the second driving element is connected with the end of the piston rod of the first cylinder, the first cylinder is installed on the support, the support is installed on the base of the drilling machine, the base is provided with the detachable tool matched with the tool holding groove.

[0015] According to the engine body inner hole processing machine tool, the base is installed with the electric cross slide, the electric cross slide is installed with the workbench for clamping and fixing the workpiece, the workbench is provided with a plurality of symmetrical supporting blocks, and the workbench is provided with a plurality of symmetrical clamping mechanisms.

[0016] According to the engine body inner hole processing machine tool, the clamping mechanisms each include a second cylinder installed on the workbench, the end of the piston rod of the second cylinder is rotationally connected with one end of a clamping block, the middle position of the clamping block is rotationally connected with one end of a connecting rod, and the other end of the connecting rod is rotationally connected with the workbench.

[0017] The application provides an engine body hole processing machine tool, which comprises a rotatable and liftable tool changer, the tool changer is provided to facilitate tool transfer, and the tool changer is provided to facilitate replacement of tools on a rotating spindle assembly and tools on a tool magazine; reverse tool holding grooves are arranged at both ends of the tool changer, the tool holding grooves are arranged to facilitate clamping in the tool groove part of the tool, and the tool holding grooves are arranged to facilitate supporting the tool; two reverse tool holding grooves can facilitate simultaneous clamping of the tools on the tool magazine and the tools on the rotating spindle assembly; the tool holding groove position of the tool changer is provided with an extendable tool pressing rod, the tool pressing rod can press the tool tightly after extension to fasten the tool in the tool holding groove, and the tool can be prevented from falling during movement; the tool changer is provided with a first driving member for driving the chip removal frame to rotate, the first driving member is arranged to facilitate driving the chip removal frame to rotate, the chip removal frame is provided with sliding rails at both ends, and the sliding rails are arranged to facilitate guiding the sliding rod; the sliding rails are slidably connected with sliding rods which can slide along the sliding rails, so that the chip removal brush can be driven to move to remove the cuttings wound on the drill bit; the sliding rails are provided with first elastic members for resetting the sliding rods, the first elastic members are arranged to facilitate automatic return of the sliding rods to the original position when no external force is applied, and the tool changer is connected with arc-shaped members arranged reversely at both ends for pushing the sliding rods to slide downward along the sliding rails; the sliding rods are connected with chip removal brushes arranged reversely at the ends, the chip removal brushes are arranged to facilitate removing the cuttings wound on the drill bit, and the insertion rod of the chip removal brush can drive the cuttings to separate from the drill bit after being inserted into the cutting gap and moving downward. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic diagram of the application;

[0019] Figure 2 is a top view structural schematic diagram of the application;

[0020] Figure 3 is a local structural schematic diagram of the tool changer position of the application;

[0021] Figure 4 is a structural schematic diagram of part A of Figure 3 ;

[0022] Figure 5 is a top view structural schematic diagram of Figure 3 ;

[0023] Figure 6 is an internal structural sectional view of the tool changer;

[0024] Figure 7 is a structural schematic diagram of part B of Figure 1 ;

[0025] Figure 8is a local structure schematic view when the chip removal frame and the tool changer are located in the same vertical plane;

[0026] Figure 9 is a structure sectional view of the chip removal brush part;

[0027] In the figure: 1-base, 2-electric cross slide, 3-workbench, 4-tool magazine, 5-rotary spindle assembly, 6-bracket, 7-tool, 8-insert rod, 9-second driving part, 10-tool changer, 11-tool holding groove, 12-tool ejecting rod, 13-arc-shaped part, 14-chip removal frame, 15-chip storage barrel, 16-sliding rail, 17-sliding rod, 18-support frame, 19-fixing plate, 20-perforated plate, 21-first elastic part, 22-second elastic part, 23-rack, 24-first gear, 25-second gear, 26-supporting block, 27-second air cylinder, 28-clamping block, 29-connecting rod, 30-third elastic part, 31-moving rod, 32-return spring. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme 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.

[0029] Referring to Figures 1-6 The present application provides an engine body inner hole processing machine tool, which comprises a rotatable and liftable tool changer 10, the tool changer 10 is arranged to facilitate the replacement of tools 7, the lifting and lowering movement of the tool changer 10 is used for the installation and removal of the tools 7, and the rotation of the tool changer 10 is used for the position replacement of two tools 7 located 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 arranged to facilitate the clamping of the clamping groove parts of the tools 7, to facilitate the provision of vertical support for the tools 7, and the tool holding grooves 11 can provide unilateral support for the tools 7 in the horizontal direction, and the tool holding grooves 11 in opposite directions can facilitate the clamping of two tools 7 located on the same straight line at the same time when the tool changer 10 is rotated to a certain angle. The tool changer 10 is provided with extendable tool ejecting rods 12 at the positions of the tool holding grooves 11, the tool ejecting rods 12 are arranged to facilitate the clamping of the tools 7, which is conducive to the clamping and fixing of the tools 7 in the tool holding grooves 11, and avoids the disengagement of the tools 7 from the tool holding grooves 11 due to the rotation of the tool changer 10.

[0030] The tool changer 10 is provided with a first driving member for driving the chip removal frame 14 to rotate, and the rotation center line of the chip removal frame 14 is coincident with the rotation center line of the tool changer 10. The chip removal frame 14 is provided with a sliding rail 16 at each end, and the sliding rail 16 is slidably connected with a sliding rod 17 which can slide along the sliding rail 16 and move linearly, so as to conveniently drive the chip removal brush to descend and take the cuttings wound on the drill bit away from the drill bit. The sliding rail 16 is provided with a first elastic member 21 for resetting the sliding rod 17, so that the sliding rod 17 can be automatically reset when losing external force. The tool changer 10 is respectively connected with an arc-shaped member 13 arranged reversely at each end for pushing the sliding rod 17 to slide downward, so that the sliding rod 17 can be pushed to slide downward when the chip removal frame 14 and the tool changer 10 rotate relatively. The sliding rod 17 is respectively connected with a chip removal brush arranged reversely at each end, so that the cuttings wound on the drill bit can be conveniently taken away from the drill bit.

[0031] Referring to Figures 1-9 Further, the tool changer 10 is internally provided with a cavity, and the cavity is provided with a first gear 24 driven by the first driving member. The first gear 24 is engaged with two second gears 25 which are rotationally connected to the tool changer 10. The first gear 24 and the second gear 25 can conveniently drive the rack 23 to move linearly, so as to conveniently extend and retract the tool pushing rod 12. The tool pushing rod 12 does not need to be additionally provided with a driving device, so that the production cost is reduced. The second gear 25 is engaged with the rack 23 which is slidably connected to the tool changer 10, and the rack 23 is connected to the tool pushing rod 12. The tool pushing rod 12 and the rack 23 are both provided with a second elastic member 22. One end of the second elastic member 22 is connected to the rack 23, and the other end of the second elastic member 22 is connected to the tool pushing rod 12. The second elastic member 22 is beneficial to change the clamping of the tool pushing rod 12 on the tool 7 from rigid clamping to elastic clamping, so as to further avoid damaging the tool 7.

[0032] The debris removing brush comprises a support frame 18 mounted at the end of the sliding rod 17, the support frame 18 is provided to conveniently support a fixed plate 19, the fixed plate 19 is connected with the support frame 18, a plurality of slidable insertion rods 8 are arranged on the fixed plate 19, the insertion rods 8 are arranged to be inserted into the gap between the wound cuttings, so as to conveniently drive the cuttings to fall off the drill bit, the insertion rods 8 are all provided with third elastic members 30 for resetting the insertion rods 8, the third elastic members 30 are all sleeved on the outside of the insertion rods 8, one end of the third elastic members 30 is connected with the insertion rods 8, the other end of the third elastic members 30 is connected with the fixed plate 19, the third elastic members 30 are located on the side of the fixed plate 19 away from the perforated plate 20, the third elastic members 30 are arranged to conveniently reset the insertion rods 8, and can avoid the rigid collision between the insertion rods 8 and the drill bit, thereby reducing the probability of damage to the insertion rods 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 through reset springs 32, one end of the perforated plate 20 is connected with a plurality of moving rods 31, the moving rods 31 all pass through the fixed plate 19, the moving rods 31 can slide along a straight line on the fixed plate 19, the reset springs 32 are all sleeved on the moving rods 31, one end of the reset springs 32 is connected with the fixed plate 19, and the other end of the reset springs 32 is connected with the perforated plate 20, the moving rods 31 are arranged to conveniently move the perforated plate 20 along a straight line, which is beneficial to avoid the position deviation of the perforated plate 20, and the moving rods 31 will not be separated from the fixed plate 19), the insertion rods 8 all pass through the perforated plate 20, the initial position of the perforated plate 20 is located at the end of the insertion rods 8, and when the perforated plate 20 is reset to the initial position, the cuttings on the insertion rods 8 can be conveniently pushed away from the insertion rods 8, so as to avoid that the cuttings are located on the insertion rods 8 for a long time to affect the cleaning of the next cuttings, the sliding rails 16 are all connected with a cuttings storage barrel 15 located below the debris removing brush, the cuttings storage barrel 15 is arranged to conveniently collect the cuttings falling from the insertion rods 8, so as to avoid that the cuttings fall on the workpiece.

[0033] 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, and the chip storage barrel 15), 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).

[0034] 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.

[0035] Each clamping mechanism includes a second cylinder 27 installed on the workbench 3, and one end of a clamping block 28 is rotatably connected to the end of the piston rod of the second cylinder 27. 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 on 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 on the workpiece.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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 shall belong to the protection scope of the claims attached to the present application.

Claims

1. An engine block bore machining machine tool, characterized by, Including the rotatable lifting tool changer, the tool changer is provided with reverse holding groove at both ends, the tool changer is provided with the extendable top tool holder at the holding groove position; The tool changer is provided with a rotatable chip removal frame, the chip removal frame is provided with a sliding rail at both ends, the sliding rail is elastically connected with a sliding rod which can slide along the sliding rail, the tool changer is respectively connected with an arc-shaped member which is reversely arranged and used for pushing the sliding rod to slide downward, the sliding rod is respectively connected with a reversely arranged chip removal brush; The tool changer drives the arc-shaped member to rotate, the arc-shaped member pushes the sliding rod to slide downward, and the sliding rod drives the chip removal brush to slide downward to take the chips wound on the tool away from the tool; The chip removal brush includes 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 provided 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; The tool changer is provided with a first driving member for driving the chip removal frame to rotate, the sliding rail is provided with a first elastic member for resetting the sliding rod, and the sliding rail is connected with a chip storage barrel below the chip removal brush.

2. The engine block bore machining machine of claim 1, wherein, The tool changer is provided with a cavity, the cavity is provided with a first gear driven by the first driving member, the first gear is engaged with two second gears which are rotatably connected to the tool changer, the second gears are engaged with racks which are slidingly connected to the tool changer, and the racks are respectively connected to the top tool holders.

3. The engine block bore machining machine of claim 2, wherein, Second elastic members are arranged between the top tool holders and the racks, 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.

4. The engine block bore machining machine of claim 1, wherein, The tool changer is provided with a second driving member for driving the tool changer to rotate, the second driving member is connected to the end of the piston rod of the first cylinder, the first cylinder is mounted on a support, the support is provided with a tool magazine for providing tools, the support is mounted on the base of the drilling machine, the drilling machine is provided with a rotatable main shaft assembly which can be lifted, and the rotatable main shaft assembly is provided with a detachable tool which cooperates with the holding groove.

5. The engine block bore machining machine of claim 4, wherein, An electric cross slide is mounted on the base, a workbench for clamping and fixing a workpiece is mounted on the electric cross slide, the workbench is provided with a plurality of symmetrical support blocks, and the workbench is provided with a plurality of symmetrical clamping mechanisms.

6. The engine block bore machining machine of claim 5, wherein, Each clamping mechanism includes a second cylinder mounted on the workbench, one end of a clamping block is rotatably connected to the end of the piston rod of the second cylinder, 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.

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