An inverted synchronous rotary deep hole drilling device

Abstract

The utility model relates to an upside-down synchronous rotation deep hole drilling device. It solves the technical problems of poor machining precision of the existing deep hole drilling. Including the bed body base, the bed body base upper end is equipped with at least one tool spindle assembly and the tool spindle assembly has the vertical setting and the circumferential rotation cutter body, the bed body base upper end is equipped with the stand, is equipped with at least one with the vertical lifting drive mechanism on the stand one side and is set up the movable seat of corresponding setting up up and down of tool spindle assembly, movable seat lower extreme is equipped with workpiece clamping subassembly, workpiece clamping subassembly is connected with the workpiece rotation drive mechanism that can drive workpiece clamping subassembly circumferential rotation along the opposite direction rotation of cutter body, movable seat upper extreme is equipped with workpiece pressure mechanism, and tool spindle assembly and workpiece rotation drive mechanism all are connected with synchronous control system. The advantage lies in: tool spindle assembly and workpiece rotation drive mechanism present opposite direction synchronous circumferential rotation, can improve the coaxiality of deep hole processing, straightness and cylindricity, improve the machining precision.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing equipment technology, specifically relating to an inverted synchronous rotary deep hole drilling device. Background Technology

[0002] In the field of machining, most hole machining on workpieces is currently performed using deep hole drilling machines. To facilitate chip removal, inverted deep hole drills that rely on gravity for chip removal are commonly used. Existing inverted deep hole drills mostly employ a single-rotation machining method, but this method has several drawbacks. First, during machining, only one side (the drill bit or the workpiece) rotates, resulting in a relatively fixed cutting point position. This makes it highly susceptible to axial misalignment and vibration due to radial forces, severely affecting machining accuracy. This is especially true when machining deep holes with large length-to-diameter ratios, where the straightness and concentricity of the hole are difficult to guarantee. Second, in single-rotation machining, chip removal relies primarily on gravity or cutting fluid flushing. Because the chip movement trajectory within the hole is relatively simple, chip clogging is prone to occur, affecting machining continuity, reducing machining efficiency, and potentially even damaging the drill bit, increasing machining costs and impacting overall efficiency. Summary of the Invention

[0003] The purpose of this invention is to address the above-mentioned problems by providing an inverted synchronous rotating deep hole drilling device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An inverted synchronous rotary deep hole drilling device includes a machine bed. At least one tool spindle assembly is provided at the upper end of the machine bed, and the tool spindle assembly has a vertically arranged and circumferentially rotating tool body. A column is provided at the upper end of the machine bed. At least one movable seat with a frame-like structure, corresponding vertically to the tool spindle assembly, is provided on the side of the column near the tool spindle assembly via a vertical lifting drive mechanism. A workpiece clamping assembly is provided at the lower end of the movable seat for clamping a workpiece and through which the tool body passes. The workpiece clamping assembly is connected to a workpiece rotation drive mechanism that drives the workpiece clamping assembly to rotate circumferentially in the opposite direction to the rotation of the tool body. The upper end of the movable seat is equipped with a workpiece clamping mechanism that can abut against the upper end of the workpiece. Both the tool spindle assembly and the workpiece rotation drive mechanism are connected to the synchronous control system. The vertical lifting drive mechanism facilitates the workpiece to approach the tool spindle assembly for processing and to move away from the tool spindle assembly. The workpiece clamping assembly ensures the clamping stability of the workpiece on the movable seat, guaranteeing processing accuracy. The workpiece clamping mechanism further improves the placement stability of the workpiece on the movable seat. The synchronous control system enables the tool spindle assembly and the workpiece rotation drive mechanism to drive synchronously in opposite directions, effectively offsetting the cutting force imbalance generated during single-rotation processing. This significantly improves the coaxiality, straightness, and cylindricity of deep holes, thereby enhancing processing accuracy.

[0005] In the aforementioned inverted synchronous rotary deep hole drilling device, two tool spindle assemblies are arranged side by side on the machine bed. Two movable seats are arranged side by side on one side of the column, each corresponding to one of the tool spindle assemblies. The movable seats are in the shape of an open square box, which allows the user to easily observe and control the machine. The two tool spindle assemblies can simultaneously process two workpieces, improving processing efficiency.

[0006] In the aforementioned inverted synchronous rotary deep hole drilling device, the workpiece clamping assembly includes a rotary mounting hole rotatably disposed at the lower end of the movable seat. A lower rotary fixture is rotatably disposed within the rotary mounting hole. The lower rotary fixture has a cylindrical structure and a clamping assembly for clamping the workpiece on its inner circumferential side. The tool body passes through the inner side of the lower rotary fixture and into the inner side of the clamping assembly. The rotary mounting hole facilitates the rotation of the lower rotary fixture, and the clamping assembly facilitates the stable clamping of the workpiece within the lower rotary fixture. The lower rotary fixture can drive the workpiece to rotate synchronously.

[0007] In the aforementioned inverted synchronous rotary deep hole drilling device, the workpiece rotation drive mechanism includes a workpiece rotary motor mounted on one side of the movable seat. A drive sprocket is mounted on the output shaft of the workpiece rotary motor. A driven sprocket, fixedly connected to the lower rotary fixture, is rotatably mounted at the lower end of the lower rotary fixture located below the movable seat. A transmission chain is provided between the drive sprocket and the driven sprocket, and a chain guard is provided around the circumference of the transmission chain. The workpiece rotary motor, through the drive sprocket, the driven sprocket, and the transmission chain, can drive the lower rotary fixture to rotate circumferentially within the rotary mounting hole, thereby causing the workpiece to rotate. The chain guard provides protection for the transmission chain, effectively preventing interference from debris, ensuring the transmission stability of the transmission chain, and improving its service life.

[0008] In the aforementioned inverted synchronous rotary deep hole drilling device, the tool spindle assembly includes a spindle body vertically mounted on the upper end of the machine bed. The upper end of the spindle body is connected to the tool body via a tool disc body, and the tool body is a drill bit. The spindle body is connected to a spindle rotation drive mechanism. A high-pressure cooling and chip removal structure is provided between the tool body and the spindle body. The tool body can be easily fixed on the spindle body via the tool disc body, and the spindle rotation drive mechanism can drive the spindle body to rotate circumferentially, thereby driving the tool body to rotate circumferentially to perform rotary machining on the workpiece. The high-pressure cooling and chip removal structure can cool and remove chips from the machining area inside the tool body, improving the tool body's service life and ensuring chip removal effect, thus improving the machining effect.

[0009] In the above-mentioned inverted synchronous rotary deep hole drilling device, the spindle rotation drive mechanism includes a motor mounting plate disposed on the outer side of the machine bed near the column. The motor mounting plate is provided with a tool rotation motor, which is connected to the spindle body via a transmission belt. The motor mounting plate facilitates the fixed mounting of the tool rotation motor on the machine bed, and the tool rotation motor and the transmission belt can drive the spindle body and the tool body to rotate circumferentially.

[0010] In the aforementioned inverted synchronous rotary deep hole drilling device, the high-pressure cooling chip removal structure includes an internal drill bit channel arranged along the axial direction of the tool body inside the tool body. The upper end of the tool body is provided with a liquid outlet hole connected to one end of the internal drill bit channel. The other end of the internal drill bit channel is connected to a coolant delivery channel inside the spindle body, and the coolant delivery channel is connected to a liquid supply device. The coolant delivery channel and the internal drill bit channel facilitate the delivery and cooling of coolant inside the tool body, improving the service life of the tool body. Furthermore, the liquid outlet hole facilitates the flushing of chips from the machining area by the coolant, improving the chip removal effect and ensuring machining efficiency.

[0011] In the aforementioned inverted synchronous rotary deep hole drilling device, the upper end of the machine bed is provided with a chip removal groove located on one side of the tool spindle assembly. One side of the chip removal groove has a chip guiding slope, and the spindle body is vertically arranged on the chip guiding slope. A chip-rolling spiral blade is provided inside the chip removal groove, with one end of the spiral blade connected to a chip removal and rolling motor located on one side of the machine bed. The other end of the chip removal and rolling motor extends to the chip removal cylinder on the other side of the machine bed and communicates with the chip removal groove. The chip removal groove facilitates the installation and placement of the spiral blade, and the chip guiding slope facilitates the guidance of machining chips into the chip removal groove. The chip removal and rolling motor drives the spiral blade to rotate, and the spiral blade facilitates the discharge of chips through the chip removal cylinder, improving chip removal efficiency.

[0012] In the aforementioned inverted synchronous rotary deep hole drilling device, the vertical lifting drive mechanism includes several sliding guide rails vertically mounted on the column. Each side of the movable seat has two parallel sliding guide rails, and the movable seat has several guide sliders slidably mounted on the sliding guide rails. The column contains a drive screw, which has a drive slider fixedly connected to one side of the movable seat and spirally mounted. The column also has a drive motor capable of driving the drive screw. A limiting cover plate is provided at the end of the sliding guide rail near the machine bed. The limiting cover plate is movably abutted against the movable seat. The sliding guide rails and guide sliders facilitate the vertical sliding of the movable seat on the column, allowing for easy workpiece position adjustment. The limiting cover plate also limits the movement of the movable seat, effectively preventing damage to the spindle.

[0013] In the aforementioned inverted synchronous rotary deep hole drilling device, the workpiece clamping mechanism includes a top pressure seat disposed within a movable seat. One side of the top pressure seat slides vertically within the movable seat via a top pressure sliding assembly. A top pressure cylinder is provided at the upper end of the movable seat. One end of the top pressure cylinder is provided with a cylinder push rod capable of pushing the top pressure seat vertically and slidingly disposed on the top pressure sliding assembly. The lower end of the top pressure seat is provided with a top pressure cover corresponding to the workpiece. The top pressure cover is provided with a top pressure hole that abuts against the workpiece. The top pressure sliding assembly includes two top pressure slide rails vertically disposed within the movable seat and arranged parallel to each other. One side of the top pressure seat is provided with several top pressure sliders that slide slidably on the top pressure slide rails. The top pressure seat slides vertically within the movable seat via the top pressure sliders. The top pressure seat can be vertically and movably disposed within the movable seat via the top pressure sliding assembly, facilitating the dynamic top pressure on the workpiece. The top pressure cover and the top pressure hole ensure the top pressure effect of the top pressure seat on the workpiece, guaranteeing the stability of the workpiece during processing and ensuring the processing effect.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] 1. The tool spindle assembly and the workpiece rotation drive mechanism rotate synchronously in opposite directions, which can improve the coaxiality, straightness and cylindricity of the spindle body in deep hole machining, and improve the machining accuracy of the workpiece.

[0016] 2. The high-pressure cooling and chip removal structure can cool the inside of the tool body, improving its service life. The liquid outlet can flush away chips from the machining area, ensuring the machining effect of the tool body.

[0017] 3. The chip removal efficiency can be improved by using chip-winding spiral blades and chip-removing cylinder. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a structural schematic diagram of the vertical lifting drive mechanism in this utility model.

[0020] Figure 3 This is a schematic diagram of the structure of the bed base in this utility model.

[0021] Figure 4 This is a schematic diagram of the workpiece clamping mechanism in this utility model.

[0022] Figure 5 This is an exploded view of the workpiece rotation drive mechanism in this utility model.

[0023] Figure 6This is a schematic diagram of the main shaft rotation drive mechanism in this utility model.

[0024] Figure 7 This is a schematic diagram of the high-pressure cooling chip removal structure in this utility model.

[0025] In the diagram: 1. Bed base; 11. Column; 111. Movable seat; 12. Chip conveying groove; 13. Chip guiding slope; 14. Chip winding spiral blade; 15. Chip conveying and winding motor; 16. Chip conveying cylinder; 2. Tool spindle assembly; 21. Spindle body; 22. Tool head body; 3. Tool body; 4. Vertical lifting drive mechanism; 41. Sliding guide rail; 42. Guide slider; 43. Drive screw; 44. Drive slider; 45. Drive motor; 46. Limiting cover plate; 5. Workpiece; 6. Workpiece clamping assembly; 61. Rotary mounting hole; 62. Lower rotary fixture seat; 63. Fixture assembly; 64. Workpiece rotation drive. 7. Workpiece rotation motor 71. Drive sprocket 72. Driven sprocket 73. Transmission chain 74. Chain guard 75. Workpiece clamping mechanism 8. Top pressure seat 81. Top pressure sliding assembly 82. Top pressure slide rail 821. Top pressure slider 822. Top pressure cylinder 83. Cylinder push rod 84. Top pressure cover 85. Top pressure hole 86. Spindle rotation drive mechanism 9. Motor mounting plate 91. Tool rotation motor 92. Transmission belt 93. High-pressure cooling chip removal structure 10. Drill bit internal channel 101. Coolant outlet 102. Coolant delivery channel 103. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] like Figure 1 , Figure 5 , Figure 6As shown, this inverted synchronous rotary deep hole drilling device includes a bed base 1. At least one tool spindle assembly 2 is provided on the upper end of the bed base 1, and the tool spindle assembly 2 has a vertically arranged and circumferentially rotating tool body 3. A column 11 is provided on the upper end of the bed base 1. On the side of the column 11 near the tool spindle assembly 2, at least one movable seat 111 is provided via a vertical lifting drive mechanism 4, corresponding vertically to the tool spindle assembly 2 and having a frame-like structure. The lower end of the movable seat 111 is provided with a workpiece clamping assembly 6 for clamping a workpiece 5 and through which the tool body 3 passes. The workpiece clamping assembly 6 is connected to a workpiece rotation drive mechanism 7 that drives the workpiece clamping assembly 6 to rotate circumferentially in the opposite direction to the rotation of the tool body 3. The upper end of the movable seat 111 is provided with a support that can abut against the workpiece. The workpiece clamping mechanism 8 at the upper end of the tool spindle assembly 2 and the workpiece rotation drive mechanism 7 are both connected to the synchronous control system. The vertical lifting drive mechanism 4 facilitates the workpiece 5 to approach the tool spindle assembly 2 for processing and to move away from the tool spindle assembly 2. The workpiece clamping assembly 6 ensures the clamping stability of the workpiece 5 on the movable seat 111, ensuring processing accuracy. The workpiece clamping mechanism 8 further improves the placement stability of the workpiece 5 on the movable seat 111. The synchronous control system enables the tool spindle assembly 2 and the workpiece rotation drive mechanism 7 to drive synchronously in opposite directions, effectively offsetting the cutting force imbalance generated during single rotation processing, significantly improving the coaxiality, straightness, and cylindricity of the deep hole, and improving processing accuracy.

[0028] Specifically, two tool spindle assemblies 2 are arranged side by side on the machine bed base 1, and two movable seats 111 are arranged side by side on one side of the column 11, which are respectively arranged one-to-one with the tool spindle assemblies 2. The movable seats 111 are square boxes with open openings, which make it easy for users to observe and control. The two tool spindle assemblies 2 can process two workpieces 5 simultaneously, improving processing efficiency.

[0029] The workpiece clamping assembly 6 includes a rotating mounting hole 61 rotatably disposed at the lower end of the movable seat 111. A lower rotating fixture seat 62 is rotatably disposed within the rotating mounting hole 61. The lower rotating fixture seat 62 has a cylindrical structure and a clamping assembly 63 for clamping the workpiece 5 on its inner circumferential side. The tool body 3 passes through the inner side of the lower rotating fixture seat 62 and into the inner side of the clamping assembly 63. The rotating mounting hole 61 facilitates the rotation of the lower rotating fixture seat 62, and the clamping assembly 63 facilitates the stable clamping of the workpiece 5 within the lower rotating fixture seat 62. The lower rotating fixture seat 62 can drive the workpiece 5 to rotate synchronously.

[0030] like Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 7As shown, the workpiece rotation drive mechanism 7 includes a workpiece rotation motor 71 disposed on one side of the movable seat 111. A drive sprocket 72 is provided on the output shaft of the workpiece rotation motor 71. A driven sprocket 73 is rotatably connected to the lower rotating fixture seat 62, located at the lower end of the movable seat 111. A transmission chain 74 is provided between the drive sprocket 72 and the driven sprocket 73. A chain guard 75 is provided around the transmission chain 74. The workpiece rotation motor 71 can drive the lower rotating fixture seat 62 to rotate circumferentially within the rotating mounting hole 61 through the drive sprocket 72, the driven sprocket 73, and the transmission chain 74, thereby causing the workpiece 5 to rotate. The chain guard 75 can protect the transmission chain 74, effectively preventing the transmission chain 74 from being interfered with by debris, ensuring the transmission stability of the transmission chain 74, and improving its service life.

[0031] Furthermore, the tool spindle assembly 2 includes a spindle body 21 vertically mounted on the upper end of the machine bed 1. The upper end of the spindle body 21 is connected to the tool body 3 via a tool disc body 22, and the tool body 3 is a drill bit. The spindle body 21 is connected to a spindle rotation drive mechanism 9. A high-pressure cooling chip removal structure 10 is provided between the tool body 3 and the spindle body 21. The tool body 22 facilitates the fixation of the tool body 3 on the spindle body 21, and the spindle rotation drive mechanism 9 can drive the spindle body 21 to rotate circumferentially, thereby driving the tool body 3 to rotate circumferentially to perform rotational machining on the workpiece 5. The high-pressure cooling chip removal structure 10 can cool and remove chips from the machining area inside the tool body 3, improve the service life of the tool body 3, ensure chip removal effect, and improve the machining effect.

[0032] The spindle rotation drive mechanism 9 includes a motor mounting plate 91 located on the outer side of the bed base 1 near the column 11. The motor mounting plate 91 is equipped with a tool rotation motor 92, which is connected to the spindle body 21 via a transmission belt 93. The motor mounting plate 91 facilitates the fixed mounting of the tool rotation motor 92 on the bed base 1, and the tool rotation motor 92 and the transmission belt 93 can drive the spindle body 21 and the tool body 3 to rotate circumferentially.

[0033] Combination Figure 2 , Figure 3 , Figure 7As shown, the high-pressure cooling chip removal structure 10 includes a drill internal channel 101 arranged axially inside the tool body 3. The upper end of the tool body 3 is provided with a liquid outlet hole 102 connected to one end of the drill internal channel 101. The other end of the drill internal channel 101 is connected to the coolant delivery channel 103 inside the spindle body 21. The coolant delivery channel 103 is connected to a liquid supply device. The coolant delivery channel 103 and the drill internal channel 101 facilitate the delivery and cooling of coolant inside the tool body 3, thereby improving the service life of the tool body 3. The liquid outlet hole 102 facilitates the flushing of chips from the machining area by the coolant, improving the chip removal effect and ensuring machining efficiency.

[0034] The upper end of the machine bed 1 is provided with a chip removal groove 12 located on one side of the tool spindle assembly 2. The chip removal groove 12 has a chip guiding slope 13 on one side, and the spindle body 21 is vertically arranged on the chip guiding slope 13. The chip removal groove 12 is provided with chip rolling helical blades 14, and one end of the chip rolling helical blades 14 is connected to the chip removal and chip rolling motor 15 located on one side of the machine bed 1. The other end of the chip removal and chip rolling motor 15 extends to the chip removal cylinder 16 on the other side of the machine bed 1 and is connected to the chip removal groove 12. The chip removal groove 12 facilitates the installation and placement of the chip rolling helical blades 14, and the chip guiding slope 13 facilitates the guidance of machining chips into the chip removal groove 12. The chip removal and chip rolling motor 15 can drive the chip rolling helical blades 14 to rotate, and the chip rolling helical blades 14 can facilitate the discharge of chips through the chip removal cylinder 16, thereby improving chip removal efficiency.

[0035] Specifically, the vertical lifting drive mechanism 4 includes several sliding guide rails 41 vertically arranged on the column 11. Each side of the movable seat 111 is provided with two parallel sliding guide rails 41, and the movable seat 111 is provided with several guide sliders 42 slidably arranged on the sliding guide rails 41. The column 11 is provided with a drive screw 43, and the drive screw 43 is provided with a drive slider 44 that is fixedly connected to one side of the movable seat 111 and spirally arranged. The column 11 is provided with a drive motor 45 that can drive the drive screw 43. The sliding guide rail 41 is provided with a limiting cover plate 46 at the end near the bed base 1. The limiting cover plate 46 is movably abutted against the movable seat 111. The sliding guide rails 41 and the guide sliders 42 facilitate the vertical sliding of the movable seat 111 on the column 11, which is convenient for adjusting the position of the workpiece 5. The limiting cover plate 43 can limit the movable seat 111, which can effectively prevent the movable seat 111 from damaging the spindle body 21.

[0036] Combination Figure 4As shown, the workpiece clamping mechanism 8 includes a top pressure seat 81 disposed within a movable seat 111. One side of the top pressure seat 81 slides vertically within the movable seat 111 via a top pressure sliding assembly 82. A top pressure cylinder 83 is provided at the upper end of the movable seat 111. One end of the top pressure cylinder 83 is provided with a cylinder push rod 84 capable of pushing the top pressure seat 81 vertically sliding on the top pressure sliding assembly 82. The lower end of the top pressure seat 81 is provided with a top pressure cover 85 corresponding to the workpiece 5. The top pressure cover 85 is provided with a top pressure hole 86 that abuts against the workpiece 5. The top pressure sliding assembly 82 includes a vertically disposed part within the movable seat 111. The movable seat 111 contains two parallel top-pressing slide rails 821. One side of the top-pressing seat 81 is provided with several top-pressing sliders 822 that are slidably mounted on the top-pressing slide rails 821. The top-pressing seat 81 is vertically slidably mounted in the movable seat 111 through the top-pressing sliders 822. The top-pressing seat 81 can be vertically and movably mounted in the movable seat 111 through the top-pressing sliding assembly 82, which facilitates the dynamic top-pressing of the workpiece 5. The top-pressing cover 85 and the top-pressing hole 86 can ensure the top-pressing effect of the top-pressing seat 81 on the workpiece 5, ensure the stability of the workpiece 5 during the processing, and ensure the processing effect.

[0037] The principle of this embodiment is as follows: the workpiece 5 is fixedly mounted on the movable seat 111 by the workpiece clamping assembly 6, and the workpiece pressing mechanism 8 can improve the clamping stability of the workpiece 5 and ensure the processing effect of the workpiece 5; the tool spindle assembly 2 and the workpiece rotation drive mechanism 7 rotate synchronously in opposite directions, which can improve the coaxiality, straightness and cylindricity of the spindle body 21 in deep hole processing and improve the processing accuracy of the workpiece 5; and the high-pressure cooling chip removal structure 10 can cool the inside of the tool body 3, improve the service life of the tool body 3, and the liquid outlet hole 102 can flush away chips in the processing area to ensure the processing effect of the tool body 3.

[0038] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0039] Although this paper extensively uses components such as bed base 1, column 11, movable seat 111, chip conveyor groove 12, chip guide slope 13, chip winding spiral blade 14, chip conveyor and chip winding motor 15, chip conveyor cylinder 16, tool spindle assembly 2, spindle body 21, tool head body 22, tool body 3, vertical lifting drive mechanism 4, sliding guide rail 41, guide slider 42, drive screw 43, drive slider 44, drive motor 45, limit cover plate 46, workpiece 5, workpiece clamping assembly 6, rotary mounting hole 61, lower rotary fixture seat 62, fixture assembly 63, workpiece rotation drive mechanism 7, workpiece rotation The terminology used includes 71 (rotary motor), 72 (drive sprocket), 73 (driven sprocket), 74 (transmission chain), 75 (chain guard), 8 (workpiece clamping mechanism), 81 (top pressure seat), 82 (top pressure sliding assembly), 821 (top pressure slide rail), 822 (top pressure slider), 83 (top pressure cylinder), 84 (cylinder push rod), 85 (top pressure cover), 86 (top pressure hole), 9 (spindle rotation drive mechanism), 91 (motor mounting plate), 92 (tool rotary motor), 93 (transmission belt), 10 (high-pressure cooling chip removal structure), 101 (drill bit internal channel), 102 (coolant outlet), and 103 (coolant delivery channel), etc., but the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. An inverted synchronous rotary deep hole drilling device, comprising a bed base (1), wherein at least one tool spindle assembly (2) is provided at the upper end of the bed base (1), and the tool spindle assembly (2) has a vertically arranged and circumferentially rotating tool body (3); a column (11) is provided at the upper end of the bed base (1); and at least one movable seat (111) with a frame structure and corresponding vertically to the tool spindle assembly (2) is provided on the side of the column (11) near the tool spindle assembly (2) via a vertical lifting drive mechanism (4), characterized in that, The lower end of the movable seat (111) is provided with a workpiece clamping assembly (6) for clamping the workpiece (5) and through which the tool body (3) passes. The workpiece clamping assembly (6) is connected to a workpiece rotation drive mechanism (7) that can drive the workpiece clamping assembly (6) to rotate circumferentially in the opposite direction to the rotation of the tool body (3). The upper end of the movable seat (111) is provided with a workpiece pressing mechanism (8) that can abut against the upper end of the workpiece (5). The tool spindle assembly (2) and the workpiece rotation drive mechanism (7) are both connected to a synchronous control system.

2. The inverted synchronous rotary deep hole drilling device according to claim 1, characterized in that, Two tool spindle assemblies (2) are arranged side by side on the bed base (1). Two movable seats (111) are arranged side by side on one side of the column (11) and are respectively arranged in a one-to-one correspondence with the tool spindle assembly (2). The movable seats (111) are in the shape of a square box with an open opening.

3. The inverted synchronous rotary deep hole drilling device according to claim 1, characterized in that, The workpiece clamping assembly (6) includes a rotating mounting hole (61) rotatably disposed at the lower end of the movable seat (111). A lower rotating fixture seat (62) is rotatably disposed in the rotating mounting hole (61). The lower rotating fixture seat (62) has a cylindrical structure and a clamping assembly (63) for clamping the workpiece (5) is provided on its inner circumferential side. The tool body (3) passes through the inner side of the lower rotating fixture seat (62) and into the inner side of the clamping assembly (63).

4. The inverted synchronous rotary deep hole drilling device according to claim 3, characterized in that, The workpiece rotation drive mechanism (7) includes a workpiece rotation motor (71) disposed on one side of the movable seat (111). The output shaft of the workpiece rotation motor (71) is provided with a drive sprocket (72). The lower end of the lower rotating fixture seat (62) is located on the lower side of the movable seat (111) and is provided with a driven sprocket (73) fixedly connected to the lower rotating fixture seat (62). A transmission chain (74) is provided between the drive sprocket (72) and the driven sprocket (73), and a chain guard (75) is provided on the circumferential periphery of the transmission chain (74).

5. The inverted synchronous rotary deep hole drilling device according to claim 1, characterized in that, The tool spindle assembly (2) includes a spindle body (21) vertically mounted on the upper end of the machine bed (1). The upper end of the spindle body (21) is connected to the tool body (3) through the tool disc body (22), and the tool body (3) is a drill bit. The spindle body (21) is connected to a spindle rotation drive mechanism (9). A high-pressure cooling chip removal structure (10) is provided between the tool body (3) and the spindle body (21).

6. The inverted synchronous rotary deep hole drilling device according to claim 5, characterized in that, The spindle rotation drive mechanism (9) includes a motor mounting plate (91) located on the outer side of the bed base (1) near the column (11). The motor mounting plate (91) is equipped with a tool rotation motor (92), and the tool rotation motor (92) is connected to the spindle body (21) via a transmission belt (93).

7. The inverted synchronous rotary deep hole drilling device according to claim 5, characterized in that, The high-pressure cooling chip removal structure (10) includes a drill bit internal channel (101) arranged axially inside the cutter body (3). The upper end of the cutter body (3) is provided with a liquid outlet hole (102) connected to one end of the drill bit internal channel (101). The other end of the drill bit internal channel (101) is connected to the coolant delivery channel (103) inside the spindle body (21), and the coolant delivery channel (103) is connected to a liquid supply device.

8. The inverted synchronous rotary deep hole drilling device according to claim 5, characterized in that, The upper end of the bed base (1) is provided with a chip removal groove (12) located on one side of the tool spindle assembly (2). The chip removal groove (12) has a chip guiding slope (13) on one side, and the spindle body (21) is vertically arranged on the chip guiding slope (13). The chip removal groove (12) is provided with a chip rolling spiral blade (14), and one end of the chip rolling spiral blade (14) is connected to a chip removal and chip rolling motor (15) located on one side of the bed base (1). The other end of the chip removal and chip rolling motor (15) extends to the chip removal cylinder (16) on the other side of the bed base (1) and is connected to the chip removal groove (12).

9. The inverted synchronous rotary deep hole drilling device according to claim 1, characterized in that, The vertical lifting drive mechanism (4) includes several sliding guide rails (41) vertically arranged on the column (11). Each side of the movable seat (111) is provided with two parallel sliding guide rails (41). The movable seat (111) is provided with several guide sliders (42) slidably arranged on the sliding guide rails (41). The column (11) is provided with a drive screw (43). The drive screw (43) is provided with a drive slider (44) fixedly connected to one side of the movable seat (111) and spirally arranged. The column (11) is provided with a drive motor (45) capable of driving the drive screw (43). The sliding guide rail (41) is provided with a limiting cover plate (46) at one end near the bed base (1). The limiting cover plate (46) is movably abutting against the movable seat (111).

10. An inverted synchronous rotary deep hole drilling device according to claim 1, characterized in that, The workpiece clamping mechanism (8) includes a top pressure seat (81) disposed in a movable seat (111). One side of the top pressure seat (81) slides vertically within the movable seat (111) via a top pressure sliding assembly (82). A top pressure cylinder (83) is provided at the upper end of the movable seat (111). One end of the top pressure cylinder (83) is provided with a cylinder push rod (84) capable of pushing the top pressure seat (81) to slide vertically on the top pressure sliding assembly (82). The lower end of the top pressure seat (81) is provided with a part that is aligned with the workpiece (5). A top pressure cover (85) should be provided, and the top pressure cover (85) is provided with a top pressure hole (86) that abuts against the workpiece (5). The top pressure sliding assembly (82) includes two top pressure slide rails (821) that are vertically arranged in the movable seat (111) and arranged in parallel with each other. The top pressure seat (81) is provided with a plurality of top pressure sliders (822) that are slidably arranged on the top pressure slide rails (821) on one side. The top pressure seat (81) is vertically slidably arranged in the movable seat (111) through the top pressure sliders (822).

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