Inverted drilling machine

Abstract

The invention provides an inverted drilling machine, and belongs to the technical field of machining machine tools. The defects that according to an existing drilling machine, scrap iron can fall into a hole of a workpiece, so that the machining precision is affected; when a machined hole is deep, scrap iron in the hole is difficult to discharge, and even the inner wall of the hole is abraded. The device comprises a rack, a workpiece part and a cutter part, the workpiece part and the cutter part are arranged on the rack, the workpiece part comprises a first driving mechanism, the first driving mechanism can drive a workpiece to move in the Y direction and the Z direction respectively, and the cutter part comprises a second driving mechanism for driving a cutter to rotate and a third driving mechanism for driving the cutter to move in the X direction; the workpiece is located above the cutter, and the cutter vertically faces upwards to machine the workpiece above. The punching device has the advantages that the cutter is arranged below a workpiece, the cutter is used for punching upwards, and scrap iron can fall downwards and cannot be accumulated in a hole.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of processing machine tools, and relates to an inverted drilling machine. BACKGROUND

[0002] A conventional drilling machine has a worktable for clamping a workpiece, a tool is clamped on a spindle and located above the worktable, the workpiece can be translated along the X direction and the Y direction, and the tool can be vertically lifted along the Z direction for drilling.

[0003] However, the drilling machine has the following disadvantages: iron filings will fall into the hole of the workpiece, thereby affecting the machining precision; when the hole to be machined is very deep, the iron filings in the hole are difficult to discharge, and even the inner wall of the hole will be abraded. SUMMARY

[0004] The present application is directed to the above-mentioned problems of the existing drilling machine, and provides an inverted drilling machine for machining the workpiece and the tool.

[0005] The object of the present application can be achieved by the following technical solutions.

[0006] An inverted drilling machine, characterized in that it comprises a machine frame, and a workpiece part and a tool part arranged on the machine frame, the workpiece part comprises a driving mechanism one for driving the workpiece to move along the Y direction and the Z direction respectively, the tool part comprises a driving mechanism two for driving the tool to rotate, and a driving mechanism three for driving the tool to move along the X direction; the workpiece is located above the tool, and the tool vertically faces upward to machine the workpiece above.

[0007] In the above-mentioned inverted drilling machine, the driving mechanism one comprises a cross beam and a sliding block, the workpiece is fixed on the sliding block, the sliding block is horizontally slidably arranged on the cross beam through a sliding rail along the Y direction, and a screw rod assembly one is arranged on the cross beam for driving the sliding block to move back and forth along the Y direction; the cross beam is vertically slidably arranged on the machine frame through a sliding rail along the Z direction, and a screw rod assembly two is arranged on the machine frame for driving the cross beam to move up and down along the Z direction.

[0008] In the above-mentioned inverted drilling machine, the driving mechanism two comprises a spindle and a rotating driving motor, the tool is fixedly connected with the spindle through a tool handle, and an output shaft of the rotating driving motor is in transmission connection with the spindle for driving the spindle and the tool to rotate.

[0009] In the above-mentioned inverted drilling machine, the driving mechanism three comprises a sliding table, the spindle is rotatably arranged on the sliding table, a driving motor is fixedly arranged on the sliding table, the sliding table is horizontally slidably arranged on the machine frame through a sliding rail along the X direction, and a screw rod assembly three is arranged on the machine frame for driving the sliding table to move back and forth along the X direction.

[0010] In the above-mentioned inverted drilling machine, the driving mechanism one further comprises a hydraulic cylinder, the cylinder body of the hydraulic cylinder is fixedly arranged on the frame, and the piston rod of the hydraulic cylinder is fixedly connected with the cross beam.

[0011] In the above-mentioned inverted drilling machine, the screw rod assembly one comprises a screw rod one, a screw rod nut one and a driving motor one, the screw rod one is rotationally arranged on the cross beam, the screw rod nut one is sleeved on the screw rod one and is fixedly connected with the sliding block, and the output shaft of the driving motor one is fixedly connected with the screw rod one for driving the screw rod one to rotate and driving the sliding block and the workpiece to move back and forth along the Y direction, and the axis of the screw rod one extends along the Y direction.

[0012] In the above-mentioned inverted drilling machine, the screw rod assembly two comprises a screw rod two, a screw rod nut two and a driving motor two, the screw rod two is rotationally arranged on the frame, the screw rod nut two is sleeved on the screw rod two and is fixedly connected with the cross beam, and the output shaft of the driving motor two is fixedly connected with the screw rod two for driving the screw rod two to rotate and driving the cross beam and the workpiece to move up and down along the Z direction, and the axis of the screw rod two extends along the Y direction.

[0013] In the above-mentioned inverted drilling machine, the screw rod assembly three comprises a screw rod three, a screw rod nut three and a driving motor three, the screw rod three is rotationally arranged on the frame, the screw rod nut three is sleeved on the screw rod three and is fixedly connected with the sliding table, and the output shaft of the driving motor three is fixedly connected with the screw rod three for driving the screw rod three to rotate and driving the sliding table and the tool to move back and forth along the X direction, and the axis of the screw rod three extends along the X direction.

[0014] In the above-mentioned inverted drilling machine, the frame is further provided with a tool holder, and the tool holder is provided with a plurality of workstations for placing tools and tool handles.

[0015] In the above-mentioned inverted drilling machine, the tool holder comprises a fixed plate and a movable plate, the movable plate is movably arranged on the fixed plate through a plurality of pin shafts and can vertically move up and down relative to the fixed plate, and a spring is further arranged between the fixed plate and the movable plate, and the spring is sleeved on the pin shaft.

[0016] In the above-mentioned inverted drilling machine, the sliding block is provided with a clamp for clamping the workpiece.

[0017] In the above-mentioned inverted drilling machine, the clamp is a three-jaw chuck, and the three-jaw chuck is fixedly connected with the sliding block through an angle piece.

[0018] In the above-mentioned inverted drilling machine, the frame is provided with a horizontal mounting platform, the sliding table is slidingly arranged on the mounting platform, and each side of the sliding table is provided with a protective cover, and the sliding table can stretch or compress the protective covers on both sides when moving.

[0019] In the above-mentioned inverted drilling machine, the protective cover comprises an organ cover and a steel plate cover, and the steel plate cover is located outside the organ cover.

[0020] In the above-mentioned inverted drilling machine, the installation platform is provided with a material collecting groove, two material collecting grooves are arranged on the two sides of the main shaft, the cross section shape of the protective cover is inverted V type, and the two ends of the V type extend to the upper sides of the two material collecting grooves respectively.

[0021] In the above-mentioned inverted drilling machine, the main shaft comprises a shaft base, a mandrel and a sleeve ring, the shaft base is fixedly arranged on the sliding table, the mandrel is rotatably arranged on the shaft base, and the sleeve ring is fixedly arranged on the top of the mandrel and sleeved on the outer periphery of the mandrel; a ring-shaped groove one is arranged on the sleeve ring, a convex ring one is fixedly arranged on the mandrel, and the convex ring one is inserted into the groove one; a waterproof ring is arranged on the top of the main shaft, the waterproof ring covers the outer periphery of the mandrel and the sleeve ring, a sealing piece one is arranged between the inner wall of the waterproof ring and the outer wall of the mandrel, a sealing piece two is arranged between the inner wall of the waterproof ring and the outer wall of the sleeve ring; a ring-shaped groove two is arranged on the top surface of the sleeve ring, a convex ring two is fixedly arranged on the waterproof ring, the convex ring two is inserted into the groove two, and a sealing piece three is arranged between the convex ring two and the groove two.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] 1. By arranging the cutter below the workpiece, the cutter punches upward, and the iron filings fall downward and do not accumulate in the hole;

[0024] 2. Since the high-temperature iron filings falling downward can scald the organ cover, a steel cover is additionally arranged outside the organ cover to protect the organ cover, the sealing effect of the organ cover is better than that of the steel cover, and the organ cover can prevent water, so that the two covers have a double protection effect;

[0025] 3. Since the workpiece, the three-jaw chuck, the sliding block, the first screw rod assembly and the cross beam are very heavy, the parts are only driven to ascend and descend by the second screw rod assembly, and therefore a hydraulic cylinder is additionally arranged between the cross beam and the frame to make the ascending and descending process more stable;

[0026] 4. By arranging the V-shaped structure of the steel cover, the iron filings falling upward are all collected in the two material collecting grooves on the two sides along the steel cover, so that the iron filings are conveniently collected;

[0027] 5. By designing the waterproof ring, the main shaft is waterproofed, the design of the two groups of convex rings and grooves and the three groups of sealing pieces has a multiple waterproof effect, and the waterproof effect is better;

[0028] 6. When the cutter is replaced, the cutter holder moves downward, the cutter enters a certain position in the inner hole of the main shaft, the support moves to the right by a certain distance to be separated from the cutter, the cutter is pulled tightly by the cutter claw of the main shaft to complete the replacement of the cutter, and in order to avoid rigid contact between the main shaft and the cutter holder, the floating amount of the movable plate can avoid rigid collision caused by inaccurate position. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a whole structure schematic view of the drilling machine of the present application.

[0030] Figure 2 This is a schematic diagram of the second and third drive mechanisms of the present invention;

[0031] Figure 3 This is a schematic diagram of the drive mechanism one of the present invention;

[0032] Figure 4 This is a schematic diagram of the drive mechanism of the present invention from another angle;

[0033] Figure 5 This is a schematic diagram of the three-jaw chuck and tool holder of the present invention;

[0034] Figure 6 This is a schematic diagram of the protective cover of the present invention;

[0035] Figure 7 This is a cross-sectional view of the main shaft of the present invention;

[0036] Figure 8 This is an enlarged cross-sectional view of the waterproof ring of the present invention.

[0037] In the diagram, 1. Frame; 2. Crossbeam; 3. Slider; 4. Main shaft; 5. Slide table; 6. Hydraulic cylinder; 7. Lead screw one; 8. Drive motor one; 9. Lead screw two; 10. Drive motor two; 11. Lead screw three; 12. Drive motor three; 14. Tool holder; 15. Three-jaw chuck; 16. Steel plate cover; 17. Collection trough; 18. Corner piece; 19. Rotary drive motor; 20. Mandrel; 21. Collar; 22. Convex ring one; 23. Waterproof ring; 24. Convex ring two; 25. Seal one; 26. Seal two; 27. Seal three; 28. Shaft seat; 30. Fixed plate; 31. Movable plate; 32. Pin; 33. Spring. Detailed Implementation

[0038] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0039] like Figure 1 As shown, the inverted drilling machine of the present invention includes a frame 1 and a workpiece part and a cutting tool part disposed on the frame 1. The workpiece part includes a first driving mechanism that can drive the workpiece to move along the Y and Z directions respectively. The cutting tool part includes a second driving mechanism that drives the cutting tool to rotate and a third driving mechanism that drives the cutting tool to move along the X direction. The workpiece is located above the cutting tool, and the cutting tool is vertically upward to process the workpiece above.

[0040] like Figure 3As shown, the driving mechanism one includes a crossbeam 2, a sliding block 3, the workpiece is fixed on the sliding block 3, the sliding block 3 is arranged on the crossbeam 2 through the slide rail and horizontally slides along the Y direction, the crossbeam 2 is arranged on the rack 1 through the slide rail and vertically slides along the Z direction, the rack 1 is provided with a screw rod assembly two for driving the crossbeam 2 to reciprocate along the Z direction. Figure 4 As shown, the driving mechanism one further includes a hydraulic cylinder 6, the cylinder body of the hydraulic cylinder 6 is fixed on the rack 1, and the piston rod of the hydraulic cylinder 6 is fixedly connected with the crossbeam 2.

[0041] The screw rod assembly one includes a screw rod one 7, a screw nut one, a driving motor one 8, the screw rod one 7 is rotationally arranged on the crossbeam 2, the screw nut one is sleeved on the screw rod one 7 and is fixedly connected with the sliding block 3, the output shaft of the driving motor one 8 is fixedly connected with the screw rod one 7 for driving the screw rod one 7 to rotate and driving the sliding block 3 and the workpiece to reciprocate along the Y direction, and the axis of the screw rod one 7 extends along the Y direction.

[0042] The screw rod assembly two includes a screw rod two 9, a screw nut two, a driving motor two 10, the screw rod two 9 is rotationally arranged on the rack 1, the screw nut two is sleeved on the screw rod two 9 and is fixedly connected with the crossbeam 2, the output shaft of the driving motor two 10 is fixedly connected with the screw rod two 9 for driving the screw rod two 9 to rotate and driving the crossbeam 2 and the workpiece to reciprocate along the Z direction, and the axis of the screw rod two 9 extends along the Y direction.

[0043] As shown, Figure 2 The driving mechanism two includes a main shaft 4 and a rotary driving motor 19, the cutter is fixedly connected with the main shaft 4 through the tool handle 14, the output shaft of the rotary driving motor 19 is in transmission connection with the main shaft 4 for driving the main shaft 4 and the cutter to rotate. The driving mechanism three includes a sliding table 5, the main shaft 4 is rotationally arranged on the sliding table 5, the driving motor is fixedly arranged on the sliding table 5, the sliding table 5 is arranged on the rack 1 through the slide rail and horizontally slides along the X direction, and the rack 1 is provided with a screw rod assembly three for driving the sliding table 5 to reciprocate along the X direction.

[0044] The screw rod assembly three includes a screw rod three 11, a screw nut three and a driving motor three 12, the screw rod three 11 is rotationally arranged on the rack 1, the screw nut three is sleeved on the screw rod three 11 and is fixedly connected with the sliding table 5, the output shaft of the driving motor three 12 is fixedly connected with the screw rod three 11 for driving the screw rod three 11 to rotate and driving the sliding table 5 and the cutter to reciprocate along the X direction, and the axis of the screw rod three 11 extends along the X direction.

[0045] As shown, Figure 5As shown, the rack 1 is also provided with a tool holder, and the tool holder is provided with a plurality of work stations for placing tools and tool shanks 14. The tool holder comprises a fixed plate 30 and a movable plate 31, the movable plate 31 is movably arranged on the fixed plate 30 through a plurality of pin shafts 32 and can vertically ascend and descend relative to the fixed plate 30, and a spring 33 is further arranged between the fixed plate 30 and the movable plate 31, and the spring 33 is sleeved on the pin shaft 32. The sliding block 3 is provided with a clamp for clamping a workpiece. The clamp is a three-jaw chuck 15, and the three-jaw chuck 15 is fixedly connected with the sliding block 3 through an angle piece 18.

[0046] As shown in the drawings, Figure 6 As shown, the rack 1 is provided with a horizontal mounting platform, and the sliding table 5 is slidably arranged on the mounting platform, and a protective cover is arranged on both sides of the sliding table 5, and the protective cover can be stretched or compressed when the sliding table 5 moves. The protective cover comprises an organ cover and a steel cover 16, and the steel cover 16 is located outside the organ cover. The mounting platform is provided with a material collecting groove 17, and two material collecting grooves 17 are arranged on both sides of the main shaft 4, and the cross-sectional shape of the protective cover is inverted V-shaped, and the two ends of the V-shaped are respectively extended to above the two material collecting grooves 17.

[0047] The traditional drilling machine is empty below the workbench for installing the workpiece, and the current mounting platform is provided with a rotating driving motor 19 below, and the motor is large in size, so that the sliding table 5 can only move left and right along the X direction, and the translation stroke in the other direction Y direction is designed on the upper workpiece.

[0048] As shown in the drawings, Figure 7 As shown in the drawings, the main shaft comprises a shaft seat, a mandrel and a sleeve ring, the shaft seat is fixedly arranged on the sliding table, the mandrel is rotatably arranged on the shaft seat, and the sleeve ring is fixedly arranged on the top of the mandrel and sleeved on the outer periphery of the mandrel; as shown in the drawings, Figure 8 As shown, a ring-shaped groove one is formed on the sleeve ring, a convex ring one is fixedly arranged on the mandrel, and the convex ring one is inserted into the groove one; a waterproof ring is arranged on the top of the main shaft, the waterproof ring covers the outer periphery of the mandrel and the sleeve ring, and a sealing piece one is arranged between the inner wall of the waterproof ring and the outer wall of the mandrel; a sealing piece two is arranged between the inner wall of the waterproof ring and the outer wall of the sleeve ring; a ring-shaped groove two is formed on the top surface of the sleeve ring, a convex ring two is fixedly arranged on the waterproof ring, the convex ring two is inserted into the groove two, and a sealing piece three is arranged between the convex ring two and the groove two.

[0049] It should be understood that in the claims, the specification and all the drawings of the present application, all "comprises" or "comprising" are to be construed as open-ended terms, i.e. the meaning of "comprises" or "comprising" is the same as the meaning of "comprising at least" or "including at least", and should not be construed as "consisting only of".

[0050] The specific embodiments described herein are merely illustrative of the spirit of the application. Various modifications or changes in the specific embodiments described herein can occur to those skilled in the art to which the application pertains without departing from the spirit of the application, and it is understood that such modifications or changes are to be considered as within the scope of the application as defined by the appended claims.

Claims

1. An inverted drilling machine, characterized in that, It includes a frame (1) and a workpiece part and a cutting tool part disposed on the frame (1). The workpiece part includes a drive mechanism 1, which can drive the workpiece to move along the Y and Z directions respectively. The cutting tool part includes a drive mechanism 2 for driving the cutting tool to rotate and a drive mechanism 3 for driving the cutting tool to move along the X direction. The workpiece is located above the cutting tool, and the cutting tool is vertically upward to process the workpiece above.

2. The inverted drilling machine according to claim 1, characterized in that, The drive mechanism includes a crossbeam (2) and a slider (3). The workpiece is fixed on the slider (3). The slider (3) is horizontally slidable on the crossbeam (2) along the Y direction via a slide rail. A screw assembly is provided on the crossbeam (2) to drive the slider (3) to move back and forth along the Y direction. The crossbeam (2) is vertically slidable on the frame (1) along the Z direction via a slide rail. A screw assembly is provided on the frame (1) to drive the crossbeam (2) to move up and down along the Z direction.

3. The inverted drilling machine according to claim 1, characterized in that, The second drive mechanism includes a spindle (4) and a rotary drive motor (19). The tool is fixedly connected to the spindle (4) via a tool holder (14). The output shaft of the rotary drive motor (19) is connected to the spindle (4) for driving the spindle (4) and the tool to rotate.

4. An inverted drilling machine according to claim 3, characterized in that, The drive mechanism includes a slide (5), a main shaft (4) is rotatably mounted on the slide (5), a drive motor is fixed on the slide (5), the slide (5) is horizontally mounted on the frame (1) via a slide rail, and a lead screw assembly is provided on the frame (1) for driving the slide (5) to move back and forth along the X direction.

5. An inverted drilling machine according to claim 2, characterized in that, The lead screw assembly includes a lead screw (7), a lead screw nut, and a drive motor (8). The lead screw (7) is rotatably mounted on the crossbeam (2). The lead screw nut is mounted on the lead screw (7) and fixedly connected to the slider (3). The output shaft of the drive motor (8) is fixedly connected to the lead screw (7) to drive the lead screw (7) to rotate and drive the slider (3) and the workpiece to move back and forth along the Y direction. The axis of the lead screw (7) extends along the Y direction.

6. An inverted drilling machine according to claim 2, characterized in that, The second lead screw assembly includes a second lead screw (9), a second lead screw nut, and a second drive motor (10). The second lead screw (9) is rotatably mounted on the frame (1). The second lead screw nut is sleeved on the second lead screw (9) and fixedly connected to the crossbeam (2). The output shaft of the second drive motor (10) is fixedly connected to the second lead screw (9) to drive the second lead screw (9) to rotate and drive the crossbeam (2) and the workpiece to rise and fall along the Z direction. The axis of the second lead screw (9) extends along the Y direction.

7. An inverted drilling machine according to claim 4, characterized in that, The lead screw assembly includes a lead screw (11), a lead screw nut, and a drive motor (12). The lead screw (11) is rotatably mounted on the frame (1). The lead screw nut is sleeved on the lead screw (11) and fixedly connected to the slide (5). The output shaft of the drive motor (12) is fixedly connected to the lead screw (11) to drive the lead screw (11) to rotate and drive the slide (5) and the cutter to move back and forth along the X direction. The axis of the lead screw (11) extends along the X direction.

8. An inverted drilling machine according to claim 2, characterized in that, The frame (1) is also provided with a tool holder, which has several workstations for placing tools and tool holders (14); the tool holder includes a fixed plate (30) and a movable plate (31), the movable plate (31) is movably mounted on the fixed plate (30) through several pins (32) and can be vertically raised and lowered relative to the fixed plate (30), a spring (33) is also provided between the fixed plate (30) and the movable plate (31), the spring (33) is sleeved on the pins (32); the slider (3) is provided with a clamp for holding the workpiece; the clamp is a three-jaw chuck (15), the three-jaw chuck (15) is fixedly connected to the slider (3) through a corner piece (18).

9. An inverted drilling machine according to claim 4, characterized in that, A horizontal mounting platform is provided on the frame (1), and the slide (5) is slidably mounted on the mounting platform. A protective cover is provided on both sides of the slide (5). When the slide (5) moves, it can stretch or compress the protective covers on both sides. The protective cover includes a bellows cover and a steel plate cover (16). The steel plate cover (16) is located outside the bellows cover. A material collection trough (17) is provided on the mounting platform. The two material collection troughs (17) are located on both sides of the main shaft (4). The cross-sectional shape of the protective cover is an inverted V-shape. The two ends of the V-shape extend to the top of the two material collection troughs (17).

10. An inverted drilling machine according to claim 4, characterized in that, The main shaft (4) includes a bearing seat (28), a spindle (20), and a collar (21). The bearing seat (28) is fixed on the slide table (4), the spindle (20) is rotatably mounted on the bearing seat (28), and the collar (21) is fixed on the top of the spindle (20) and sleeved on the outer circumference of the spindle (20). The collar (21) has an annular groove, and the spindle (20) has a protruding ring (22) fixed on it, which is inserted into the groove. The top of the main shaft (4) is provided with a waterproof ring (23). A waterproof ring (23) is placed around the outer periphery of the mandrel (20) and the collar (21). A sealing element (25) is provided between the inner wall of the waterproof ring (23) and the outer wall of the mandrel (20). A sealing element (26) is provided between the inner wall of the waterproof ring (23) and the outer wall of the collar (21). A ring-shaped groove (2) is provided on the top surface of the collar (21). A convex ring (24) is fixed on the waterproof ring (23). The convex ring (24) is inserted into the groove (2), and a sealing element (27) is provided between the convex ring (24) and the groove (2).

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