Self-priming pump bearing seat deep hole boring machining equipment

Abstract

The application relates to the field of boring technology and discloses a deep-hole boring machining equipment for a self-suction pump bearing seat, which comprises a supporting base, a rack column, a feeding driving mechanism, a main shaft boring mechanism and a workpiece clamping and positioning mechanism; the rack column is fixedly arranged on the supporting base, the feeding driving mechanism is assembled on the rack column, the main shaft boring mechanism is installed on the feeding driving mechanism, and the workpiece clamping and positioning mechanism is fixedly arranged on the supporting base and located directly below the main shaft boring mechanism. The deep-hole boring machining equipment for the self-suction pump bearing seat adopts a cross-shaped crossbeam matched with four surrounding crossbeam support seats, a combined structure of multiple rack columns and column guide rails and a vertical screw rod type transmission assembly, realizes multi-point synchronous guiding support of the feeding mechanism, effectively eliminates shaking and deviation problems caused by long-stroke feeding, guarantees that the feeding track of the boring bar main shaft is straight and stable, and improves the coaxiality, cylindricity and surface machining quality of the deep hole.

Description

Technical Field

[0001] This invention relates to the field of boring technology, specifically to a deep hole boring machine for a self-priming pump bearing housing. Background Technology

[0002] The bearing housing of a self-priming pump is the core load-bearing component of the self-priming pump. Its internal deep hole serves as the assembly reference for the bearing. The coaxiality, cylindricity, surface roughness, and perpendicularity of the hole directly determine the bearing's operating accuracy, overall machine vibration, noise, and service life. Therefore, the requirements for boring processing technology and equipment are extremely high.

[0003] Currently available deep hole boring equipment has many shortcomings when used for machining self-priming pump bearing housings:

[0004] The workpiece clamping method is simple, mostly using a single-point clamping structure. The bearing housing is an irregularly shaped shell part. Single-point clamping is prone to uneven force and slight deformation of the workpiece, which in turn leads to the offset of the deep hole machining datum and the machining dimensions exceeding the tolerance.

[0005] Traditional boring machines typically have feed beams supported at one or two points, resulting in insufficient stability during long-stroke vertical feeds. This leads to radial wobble in the boring bar spindle, significantly reducing the accuracy of deep hole machining. In deep hole boring, chips easily accumulate inside the hole, scratching the machined hole wall and accelerating boring bar wear. Conventional structures lack dedicated centering, chip guiding, and chip prevention mechanisms, making it difficult to effectively solve the chip removal and boring bar centering problems. Summary of the Invention

[0006] The purpose of this invention is to provide a deep hole boring machine for self-priming pump bearing housings, in order to solve the problems mentioned in the background art, such as the single workpiece clamping method, the use of single-point clamping structure, the bearing housing being an irregularly shaped shell part, the single-point clamping easily causing uneven force and slight deformation of the workpiece, which in turn leads to the offset of the deep hole machining reference and the machining dimensions exceeding the tolerance.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a deep hole boring machine for a self-priming pump bearing housing, comprising: a support base, a frame column, a feed drive mechanism, a spindle boring mechanism, and a workpiece clamping and positioning mechanism; the frame column is fixedly mounted on the support base, the feed drive mechanism is mounted on the frame column, the spindle boring mechanism is mounted on the feed drive mechanism, and the workpiece clamping and positioning mechanism is fixedly mounted on the support base and located directly below the spindle boring mechanism;

[0008] The feed drive mechanism includes a transmission assembly, a column guide rail, a drive motor base, a crossbeam support, and a crossbeam. The column guide rail is vertically arranged on the side wall of the frame column. The drive motor base is fixedly installed at the top of the frame column. One end of the transmission assembly is connected to the drive motor base, and the other end is connected to the crossbeam. The crossbeam slides along the column guide rail via the crossbeam support. The operator starts the main power supply, energizing the drive motor base at the top of the frame column. The drive motor is then run under no-load, causing the vertical lead screw of the transmission assembly to rotate. The crossbeam moves slightly up and down along the column guide rail on the frame column via the surrounding crossbeam support to check if the sliding feed is smooth, without jamming or shaking.

[0009] Furthermore, each of the four sides of the cross-shaped crossbeam is connected to a crossbeam support seat, and each crossbeam support seat is slidably connected to the column guide rail on the machine frame column. The transmission component is a lead screw transmission structure, with the lead screw arranged vertically, and the cross-shaped crossbeam is threadedly engaged with the lead screw. After receiving the machining command, the spindle drive component increases the speed, driving the boring bar spindle to rotate stably; at the same time, the drive motor seat drives the lead screw of the transmission component to rotate forward, driving the cross-shaped crossbeam to feed downwards at a uniform speed along the column guide rail. The cross-shaped crossbeam drives the overall spindle boring mechanism to move downwards synchronously, and the boring tool on the boring tool mounting seat at the lower end of the boring bar spindle extends into the deep hole of the self-priming pump bearing seat to begin the boring operation.

[0010] Furthermore, the spindle boring mechanism includes a spindle drive assembly, a boring bar spindle, a chip guide and centering component, a boring tool mounting base, a collar, and a chip guard. The spindle drive assembly is fixed on a cross-shaped beam. When the spindle drive assembly is powered on, it drives the boring bar spindle to rotate at low speed under no-load. The operating status of the boring bar spindle, the chip guide and centering component, and the boring tool mounting base are checked sequentially. The sealing and assembly status of the collar and the chip guard are also checked to confirm that all rotating parts operate smoothly.

[0011] Furthermore, the upper end of the boring bar spindle is connected to the output end of the spindle drive assembly, and the lower end of the boring bar spindle is sequentially equipped with a chip guide centering component and a boring tool mounting base. The collar and chip guard are both sleeved on the outside of the boring bar spindle and cooperate with the chip guide centering component. The boring bar spindle, chip guide centering component, and positioning support frame are arranged on the same central axis. The equipment detects that the central axes of the boring bar spindle, chip guide centering component, and positioning support frame coincide, and that the workpiece positioning datum and machining datum are consistent. After the self-check is completed, the equipment enters standby mode, waiting for machining instructions.

[0012] Furthermore, the chip guide centering component has a conical structure, and a spiral chip guide groove is formed on its outer surface. The chip guard is installed on the outside of the chip guide centering component, and the collar is located above the chip guard to achieve a sealed connection. During machining, the conical chip guide centering component rotates synchronously with the boring bar spindle, forming radial support for the lower part of the boring bar spindle, suppressing the swing of the long rod body, and ensuring the coaxiality of boring. The spiral chip guide groove on its outer surface, in conjunction with the rotational motion, guides the iron chips generated during boring upward. The chip guard is installed on the outside of the chip guide centering component, and the collar above it forms a sealing structure with the chip guard, blocking the splashing of iron chips and cutting fluid. At the same time, it collects and discharges the guided iron chips, preventing iron chips from accumulating in the hole and scratching the workpiece or damaging the tool.

[0013] Furthermore, the workpiece clamping and positioning mechanism includes a clamping base, a positioning box, a positioning support frame, a workpiece covering pad, and side clamping components. The clamping base is fixed on the support base. The equipment is in its initial reset state, with the cross-shaped beam and spindle boring mechanism in a high position, and all side clamping components in a released state. The operator places the self-priming pump bearing seat to be processed inside the positioning box, with the bottom of the bearing seat abutting against the workpiece positioning platform at the top of the positioning support frame, completing the initial axial and radial positioning of the workpiece.

[0014] Furthermore, the positioning box is fixedly connected to the top surface of the clamping base, the positioning support frame is disposed inside the positioning box, the workpiece covering pad is laid on the inner side wall of the positioning box, and the side clamping assembly is installed on the side wall of the positioning box and used to clamp the workpiece. The workpiece covering pad laid on the inner side wall of the positioning box forms a flexible protection for the outer wall of the workpiece. Subsequently, multiple sets of side clamping assemblies evenly arranged circumferentially are controlled to move synchronously. The clamping unit bracket drives the arc-shaped clamping block to move towards the center of the box with the clamping mounting plate as the base. The support bar reinforces the arc-shaped clamping block to ensure uniform clamping force. Finally, the arc-shaped clamping block, together with the workpiece covering pad, tightly fits against the outer wall of the bearing seat, realizing all-round covering clamping, completely fixing the position of the workpiece, and completing the clamping process.

[0015] Furthermore, the bottom of the positioning support frame is fixed to the bottom surface of the positioning box, and multiple sets of the side clamping components are evenly arranged along the circumference of the positioning box. A workpiece positioning platform is provided at the top of the positioning support frame.

[0016] Furthermore, the side clamping assembly includes a clamping mounting plate, a clamping unit bracket, a support bar, and an arc-shaped clamping block. The clamping mounting plate is fixed to the outer wall of the positioning box, the clamping unit bracket is mounted on the clamping mounting plate, the support bar is disposed between the clamping unit bracket and the arc-shaped clamping block, and the arc-shaped clamping block is disposed facing the inside of the positioning box.

[0017] Furthermore, the inner side of the arc-shaped clamping block and the workpiece covering pad cooperate to fit together with the outer wall of the self-priming pump bearing seat, and the support bars are distributed at intervals along the arc of the arc-shaped clamping block to reinforce the arc-shaped clamping block.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] (i) This deep hole boring machine for self-priming pump bearing housing adopts a combination structure of a cross-shaped crossbeam with surrounding crossbeam support seats, multiple sets of frame columns and column guide rails, and a vertical screw transmission assembly to achieve multi-point synchronous guiding support for the feed mechanism. Compared with the traditional single or double-point crossbeam structure, it effectively eliminates the shaking and offset problems caused by long-stroke feed, ensures that the boring bar spindle feed trajectory is straight and stable, and improves the coaxiality, cylindricity and surface machining quality of the deep hole.

[0020] (II) The deep hole boring machine for the self-priming pump bearing housing has a tapered chip guide centering component at the lower part of the boring bar spindle. This component can provide radial auxiliary centering for long boring bar spindles and suppress boring bar vibration and runout. The spiral chip guide groove on its surface can actively remove iron chips from the hole through rotational motion. Together with the anti-chip cover and collar, it forms a sealed protective structure to prevent iron chip accumulation and splashing, avoid hole wall scratches and abnormal wear of the boring tool, extend tool life, and optimize the workshop working environment.

[0021] (III) The deep hole boring machine for self-priming pump bearing housing uses a positioning support frame to position the bottom of the workpiece in the workpiece clamping and positioning mechanism. This is combined with a workpiece covering pad inside the positioning box and multiple sets of circumferentially evenly arranged side clamping components. Arc-shaped clamping blocks are used to achieve all-around flexible clamping of the irregularly shaped bearing housing. The clamping force is evenly distributed, solving the workpiece deformation problem caused by traditional single-point clamping. Furthermore, the boring bar spindle, chip guide centering component, and positioning support frame are coaxially aligned, ensuring that the machining datum and positioning datum are of uniform height, effectively controlling the deep hole position deviation.

[0022] (iv) The self-priming pump bearing housing deep hole boring equipment has a support base that uniformly supports all components. The frame column, feed drive mechanism, spindle boring mechanism and workpiece clamping and positioning mechanism work together in sequence. The entire process of clamping, boring, chip removal and resetting is smooth and continuous, without the need for manual intervention. It can realize continuous batch processing, effectively improve processing efficiency and reduce manual labor intensity.

[0023] (v) The deep hole boring machine for the self-priming pump bearing housing has a support bar inside the side clamping assembly to reinforce the arc-shaped clamping block, thereby improving the load-bearing capacity and service life of the clamping structure. The collar and the anti-chip cover form a sealed protection system, which can prevent cutting fluid and iron chips from entering the spindle, transmission and other core moving parts, effectively protecting the precision structure inside the equipment, reducing the equipment failure rate and extending the service life of the whole machine. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the feed drive mechanism structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the spindle boring mechanism structure of the present invention;

[0027] Figure 4 This is a disassembled schematic diagram of the spindle boring mechanism structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the workpiece clamping and positioning mechanism and the feed drive mechanism of the present invention;

[0029] Figure 6 This is a schematic diagram of the workpiece clamping and positioning mechanism structure of the present invention;

[0030] Figure 7 This is a disassembled schematic diagram of the workpiece clamping and positioning mechanism structure of the present invention;

[0031] Figure 8 This is a cross-sectional schematic diagram of the side clamping component structure of the present invention;

[0032] Figure 9 This is a disassembly diagram of the side clamping assembly structure of the present invention.

[0033] In the diagram: 1. Support base; 2. Frame column; 3. Feed drive mechanism; 31. Transmission assembly; 32. Column guide rail; 33. Drive motor base; 34. Crossbeam support seat; 35. Cross-shaped crossbeam; 4. Spindle boring mechanism; 41. Spindle drive assembly; 42. Boring bar spindle; 43. Chip guide and centering component; 44. Boring tool mounting seat; 45. Collar; 46. Chip guard; 5. Workpiece clamping and positioning mechanism; 51. Clamping base; 52. Positioning box; 53. Positioning support frame; 54. Workpiece covering pad; 55. Side clamping assembly; 551. Clamping mounting plate; 552. Clamping unit bracket; 553. Support bar; 554. Arc-shaped clamping block. Detailed Implementation

[0034] Example 1, as Figures 1 to 9As shown, the present invention provides a technical solution: a deep hole boring machine for a self-priming pump bearing housing, comprising: a support base 1, a frame column 2, a feed drive mechanism 3, a spindle boring mechanism 4, and a workpiece clamping and positioning mechanism 5; the frame column 2 is fixedly mounted on the support base 1, the feed drive mechanism 3 is mounted on the frame column 2, the spindle boring mechanism 4 is mounted on the feed drive mechanism 3, and the workpiece clamping and positioning mechanism 5 is fixedly mounted on the support base 1 and located directly below the spindle boring mechanism 4; the support base 1 uniformly supports all components, and the frame column 2, feed drive mechanism 3, spindle boring mechanism 4, and workpiece clamping and positioning mechanism 5 cooperate and link in sequence, so that the entire process of clamping, boring, chip removal, and resetting is smooth and continuous, without the need for manual intervention, and can realize continuous batch processing, effectively improving processing efficiency and reducing manual labor intensity.

[0035] The feed drive mechanism 3 includes a transmission assembly 31, a column guide rail 32, a drive motor base 33, a crossbeam support base 34, and a crossbeam 35. The column guide rail 32 is vertically arranged on the side wall of the frame column 2. The drive motor base 33 is fixedly installed at the top of the frame column 2. One end of the transmission assembly 31 is connected to the drive motor base 33, and the other end is connected to the crossbeam 35. The crossbeam 35 slides with the column guide rail 32 through the crossbeam support base 34. When the operator starts the main power supply of the equipment, the drive motor base 33 at the top of the frame column 2 is energized, and the drive motor is run under no-load test, driving the vertical lead screw of the transmission assembly 31 to rotate. The crossbeam 35 moves up and down slightly along the column guide rail 32 on the frame column 2 through the crossbeam support bases 34 around it, checking whether the sliding feed is smooth, without jamming, and without shaking.

[0036] The cross-shaped crossbeam 35 is surrounded by crossbeam support seats 34, each of which is slidably connected to the column guide rail 32 on the machine frame column 2. The transmission assembly 31 is a lead screw transmission structure with the lead screw vertically arranged, and the cross-shaped crossbeam 35 is threadedly engaged with the lead screw. After receiving the machining command, the spindle drive assembly 41 increases the speed, driving the boring bar spindle 42 to rotate stably; at the same time, the drive motor seat 33 drives the lead screw of the transmission assembly 31 to rotate in the forward direction, driving the cross-shaped crossbeam 35 to feed downwards at a uniform speed along the column guide rail 32. The cross-shaped crossbeam 35 drives the overall spindle boring mechanism 4 to move downwards synchronously, and the boring tool on the boring tool mounting seat 44 at the lower end of the boring bar spindle 42 extends into the deep hole of the self-priming pump bearing seat to begin the boring operation.

[0037] Example 2, based on Example 1, such as Figures 3 to 4As shown, the spindle boring mechanism 4 includes a spindle drive assembly 41, a boring bar spindle 42, a chip guide and centering component 43, a boring tool mounting base 44, a collar 45, and a chip guard 46. The spindle drive assembly 41 is fixed on a cross-shaped beam 35. When the spindle drive assembly 41 is powered on, it drives the boring bar spindle 42 to rotate at a low speed under no-load. The operating status of the boring bar spindle 42, the chip guide and centering component 43, and the boring tool mounting base 44 are checked in sequence. The sealing and assembly status of the collar 45 and the chip guard 46 are also checked to confirm that all rotating parts operate smoothly.

[0038] The upper end of the boring bar spindle 42 is connected to the output end of the spindle drive assembly 41. The lower end of the boring bar spindle 42 is sequentially equipped with a chip guide centering component 43 and a boring tool mounting base 44. The collar 45 and chip guard 46 are both sleeved on the outside of the boring bar spindle 42 and cooperate with the chip guide centering component 43. The boring bar spindle 42, chip guide centering component 43, and positioning support frame 53 are arranged on the same central axis. The equipment checks that the central axes of the boring bar spindle 42, chip guide centering component 43, and positioning support frame 53 coincide, and that the workpiece positioning datum and machining datum are consistent. After self-checking, the equipment enters standby mode, waiting for machining instructions.

[0039] The chip guide centering component 43 has a conical structure, and a spiral chip guide groove is formed on its outer surface. The chip guard 46 is installed on the outside of the chip guide centering component 43, and the collar 45 is located above the chip guard 46 to achieve a sealed connection. During the machining process, the conical chip guide centering component 43 rotates synchronously with the boring bar spindle 42, forming radial support for the lower part of the boring bar spindle 42, suppressing the swing of the long rod body, and ensuring the coaxiality of boring. The spiral chip guide groove on its outer surface, in conjunction with the rotational motion, guides the iron chips generated during boring upward. The chip guard 46 is installed on the outside of the chip guide centering component 43, and the collar 45 above it forms a sealing structure with the chip guard 46, blocking the splashing of iron chips and cutting fluid. At the same time, it collects and discharges the guided iron chips, avoiding iron chips remaining in the hole and scratching the workpiece or damaging the tool.

[0040] Example 3, based on Examples 1 and 2, such as Figures 5 to 9 As shown, the workpiece clamping and positioning mechanism 5 includes a clamping base 51, a positioning box 52, a positioning support frame 53, a workpiece covering pad 54, and side clamping components 55. The clamping base 51 is fixed on the support base 1. The equipment is in the initial reset state, with the cross-shaped beam 35 and the spindle boring mechanism 4 in a high position, and all side clamping components 55 in a released state. The operator places the self-priming pump bearing seat to be processed inside the positioning box 52, with the bottom of the bearing seat abutting against the workpiece positioning platform at the top of the positioning support frame 53, completing the initial axial and radial positioning of the workpiece.

[0041] The positioning box 52 is fixedly connected to the top surface of the clamping base 51. The positioning support frame 53 is located inside the positioning box 52. The workpiece covering pad 54 is laid on the inner side wall of the positioning box 52. The side clamping assembly 55 is installed on the side wall of the positioning box 52 and used to clamp the workpiece. The workpiece covering pad 54 laid on the inner side wall of the positioning box 52 forms a flexible protection for the outer wall of the workpiece. Subsequently, multiple sets of side clamping assemblies 55 evenly arranged circumferentially are controlled to move synchronously. The clamping unit bracket 552 drives the arc-shaped clamping block 554 to move towards the center of the box with the clamping mounting plate 551 as the base. The support bar 553 reinforces the arc-shaped clamping block 554 to ensure uniform clamping force. Finally, the arc-shaped clamping block 554 and the workpiece covering pad 54 fit tightly against the outer wall of the bearing seat to achieve all-round covering clamping, completely fix the position of the workpiece, and complete the clamping process.

[0042] The bottom of the positioning support frame 53 is fixed to the inner bottom surface of the positioning box 52. Multiple sets of the side clamping components 55 are evenly arranged around the circumference of the positioning box 52. The top of the positioning support frame 53 is provided with a workpiece positioning platform.

[0043] The side clamping assembly 55 includes a clamping mounting plate 551, a clamping unit bracket 552, a support bar 553, and an arc-shaped clamping block 554. The clamping mounting plate 551 is fixed to the outer wall of the positioning box 52. The clamping unit bracket 552 is mounted on the clamping mounting plate 551. The support bar 553 is disposed between the clamping unit bracket 552 and the arc-shaped clamping block 554. The arc-shaped clamping block 554 is disposed facing the interior of the positioning box 52.

[0044] The inner side of the arc-shaped clamping block 554 cooperates with the workpiece covering pad 54 to fit against the outer wall of the self-priming pump bearing seat. The support bars 553 are distributed at intervals along the arc of the arc-shaped clamping block 554 to reinforce the arc-shaped clamping block 554.

[0045] In use, the equipment is in its initial reset state, with the crossbeam 35 and the spindle boring mechanism 4 in a high position, and all side clamping components 55 in a released state. The operator places the self-priming pump bearing seat to be processed inside the positioning box 52, with the bottom of the bearing seat abutting against the workpiece positioning table at the top of the positioning support frame 53, completing the initial axial and radial positioning of the workpiece. The workpiece clamping and positioning mechanism 5 uses the positioning support frame 53 to achieve bottom positioning of the workpiece, in conjunction with the workpiece covering pad 54 inside the positioning box 52 and multiple sets of circumferentially evenly arranged side clamping components 55, using the arc-shaped clamping block 554 to achieve all-round flexible clamping of the irregular bearing seat. The clamping force is evenly distributed, solving the workpiece deformation problem caused by traditional single-point clamping, and the boring bar spindle 42, chip guide centering component 43, and positioning support frame 53 are set on the same axis, ensuring that the machining datum and the positioning datum are of uniform height, effectively controlling the position deviation of the deep hole.

[0046] The inner wall of the positioning box 52 is covered with a workpiece covering pad 54, which forms a flexible protection for the outer wall of the workpiece. Then, multiple sets of side clamping components 55 evenly arranged along the circumference are controlled to move synchronously. The clamping unit bracket 552 drives the arc-shaped clamping block 554 to move towards the center of the box with the clamping mounting plate 551 as the base. The support bar 553 reinforces the arc-shaped clamping block 554 to ensure uniform clamping force. Finally, the arc-shaped clamping block 554 and the workpiece covering pad 54 fit tightly against the outer wall of the bearing seat to achieve all-round covering clamping, completely fix the position of the workpiece, and complete the clamping process.

[0047] The side clamping assembly 55 has a support bar 553 inside to reinforce the arc-shaped clamping block 554, which improves the load-bearing capacity and service life of the clamping structure. The collar 45 and the chip shield 46 form a sealed protection system, which can prevent cutting fluid and iron chips from entering the spindle, transmission and other core moving parts, effectively protecting the precision structure inside the equipment, reducing the equipment failure rate and extending the service life of the whole machine.

[0048] The feed mechanism employs a combination structure of a cross-shaped crossbeam 35, surrounding crossbeam support seats 34, multiple sets of frame columns 2 and column guide rails 32, and a vertical lead screw transmission assembly 31 to achieve multi-point synchronous guiding support. Compared with traditional single and double-point crossbeam structures, this effectively eliminates the swaying and offset problems caused by long-stroke feed, ensuring that the feed trajectory of the boring bar spindle 42 is straight and stable, and improving the coaxiality, cylindricity, and surface finish of deep holes.

[0049] The operator turns on the main power supply of the equipment, and the drive motor seat 33 at the top of the frame column 2 is powered on. The drive motor is run under no-load test, which drives the vertical screw of the transmission component 31 to rotate. The cross-shaped beam 35 is raised and lowered slightly along the column guide rail 32 on the frame column 2 through the beam support seats 34 around it. The operator checks whether the sliding feed is smooth, without jamming or shaking.

[0050] When the spindle drive assembly 41 is powered on, it drives the boring bar spindle 42 to rotate at low speed under no-load. The operating status of the boring bar spindle 42, the chip guide centering component 43, and the boring tool mounting base 44 are checked in sequence. The sealing and assembly status of the collar 45 and the chip guard 46 are checked to confirm that each rotating component operates smoothly.

[0051] The equipment checks that the central axes of the boring bar spindle 42, the chip guide centering component 43, and the positioning support frame 53 are aligned, and that the workpiece positioning datum and machining datum are consistent. After self-inspection, the equipment enters standby mode, awaiting machining instructions. A tapered chip guide centering component 43 is installed at the lower part of the boring bar spindle 42, which provides radial auxiliary centering for the long boring bar spindle 42 and suppresses vibration and runout of the boring bar. Its surface spiral chip guide grooves actively remove chips from the hole using rotational motion. Together with the chip shield 46 and the collar 45, they form a sealed protective structure to prevent chip accumulation and splashing, avoid hole wall scratches and abnormal wear of the boring tool, extend tool life, and optimize the workshop working environment.

[0052] After receiving the machining command, the spindle drive assembly 41 increases the speed, driving the boring bar spindle 42 to rotate stably; at the same time, the drive motor base 33 drives the lead screw of the transmission assembly 31 to rotate in the forward direction, driving the cross-shaped beam 35 to feed downward at a uniform speed along the column guide rail 32.

[0053] The cross-shaped beam 35 drives the overall spindle boring mechanism 4 to move downwards synchronously. The boring tool on the boring tool mounting seat 44 at the lower end of the boring bar spindle 42 extends into the deep hole of the self-priming pump bearing seat and begins the boring operation.

[0054] During the machining process, the conical chip guide centering component 43 rotates synchronously with the boring bar spindle 42, forming radial support for the lower part of the boring bar spindle 42, suppressing the swing of the long bar body, and ensuring the coaxiality of boring. The spiral chip guide groove on its outer surface, in conjunction with the rotational motion, guides the iron chips generated during boring upward.

[0055] The chip shield 46 is installed outside the chip guide centering component 43. The upper collar 45 and the chip shield 46 form a sealing structure to block the splashing of iron chips and cutting fluid. At the same time, the iron chips that are guided out are collected and discharged in a unified manner to avoid iron chips remaining in the hole and scratching the workpiece or damaging the tool.

[0056] The feed drive mechanism 3 continues to descend at a constant speed until the boring bar spindle 42 reaches the preset machining depth, completing the boring of the entire deep hole of the bearing seat.

[0057] After reaching the machining depth, the drive motor base 33 controls the transmission component 31 to rotate in reverse, driving the cross-shaped beam 35 to move rapidly upward along the column guide rail 32, and the boring bar spindle 42 and boring tool completely withdraw from the deep hole of the workpiece.

[0058] When the spindle drive assembly 41 is powered off, it stops operating, and the boring bar spindle 42 stops rotating. After the spindle boring mechanism 4 returns to its initial high position, the side clamping assembly 55 resets, and the arc-shaped clamping block 554 releases the workpiece.

[0059] The operator removes the machined self-priming pump bearing housing from the positioning box 52, cleans the residual iron filings and cutting fluid inside the equipment, and restores the equipment to its initial position, so that the next workpiece can be clamped and machined, and the cycle continues.

Claims

1. A deep hole boring machine for a self-priming pump bearing housing, characterized in that, include: The machine includes a support base (1), a frame column (2), a feed drive mechanism (3), a spindle boring mechanism (4), and a workpiece clamping and positioning mechanism (5). The frame column (2) is fixedly mounted on the support base (1), the feed drive mechanism (3) is mounted on the frame column (2), the spindle boring mechanism (4) is mounted on the feed drive mechanism (3), and the workpiece clamping and positioning mechanism (5) is fixedly mounted on the support base (1) and located directly below the spindle boring mechanism (4). The feed drive mechanism (3) includes a transmission assembly (31), a column guide rail (32), a drive motor seat (33), a crossbeam support seat (34), and a crossbeam (35). The column guide rail (32) is vertically arranged on the side wall of the frame column (2). The drive motor seat (33) is fixedly installed on the top of the frame column (2). One end of the transmission assembly (31) is connected to the drive motor seat (33) and the other end is connected to the crossbeam (35). The crossbeam (35) slides with the column guide rail (32) through the crossbeam support seat (34).

2. The deep hole boring machine for a self-priming pump bearing housing according to claim 1, characterized in that: The cross-shaped crossbeam (35) is connected to crossbeam support seats (34) around its perimeter. Each crossbeam support seat (34) is slidably connected to the column guide rail (32) on the frame column (2). The transmission component (31) is a screw transmission structure with the screw arranged vertically. The cross-shaped crossbeam (35) is threadedly engaged with the screw.

3. The deep hole boring machine for a self-priming pump bearing housing according to claim 1, characterized in that: The spindle boring mechanism (4) includes a spindle drive assembly (41), a boring bar spindle (42), a chip guide centering component (43), a boring tool mounting base (44), a collar (45), and a chip guard (46). The spindle drive assembly (41) is fixed on a cross-shaped beam (35).

4. The deep hole boring machine for a self-priming pump bearing housing according to claim 3, characterized in that: The upper end of the boring bar spindle (42) is connected to the output end of the spindle drive assembly (41). The lower end of the boring bar spindle (42) is sequentially equipped with a chip guide centering component (43) and a boring tool mounting seat (44). The collar (45) and the chip guard (46) are both sleeved on the outside of the boring bar spindle (42) and cooperate with the chip guide centering component (43). The boring bar spindle (42), the chip guide centering component (43), and the positioning support frame (53) are arranged on the same central axis.

5. The deep hole boring machine for a self-priming pump bearing housing according to claim 4, characterized in that: The chip guide centering component (43) has a conical structure. The outer surface of the chip guide centering component (43) is provided with a spiral chip guide groove. The anti-chip cover (46) is placed on the outside of the chip guide centering component (43). The collar (45) is located above the anti-chip cover (46) and achieves a sealed connection.

6. The deep hole boring machine for a self-priming pump bearing housing according to claim 1, characterized in that: The workpiece clamping and positioning mechanism (5) includes a clamping base (51), a positioning box (52), a positioning support frame (53), a workpiece covering pad (54), and a side clamping assembly (55). The clamping base (51) is fixed on the support base (1).

7. The deep hole boring machine for a self-priming pump bearing housing according to claim 6, characterized in that: The positioning box (52) is fixedly connected to the top surface of the clamping base (51), the positioning support frame (53) is set inside the positioning box (52), the workpiece covering pad (54) is laid on the inner side wall of the positioning box (52), and the side clamping assembly (55) is installed on the side wall of the positioning box (52) and used to clamp the workpiece.

8. The deep hole boring machine for a self-priming pump bearing housing according to claim 7, characterized in that: The bottom of the positioning support frame (53) is fixed on the inner bottom surface of the positioning box (52). Multiple sets of the side clamping components (55) are evenly arranged along the circumference of the positioning box (52). The top of the positioning support frame (53) is provided with a workpiece positioning table.

9. The deep hole boring machine for a self-priming pump bearing housing according to claim 8, characterized in that: The side clamping assembly (55) includes a clamping mounting plate (551), a clamping unit bracket (552), a support bar (553), and an arc-shaped clamping block (554). The clamping mounting plate (551) is fixed to the outer wall of the positioning box (52). The clamping unit bracket (552) is mounted on the clamping mounting plate (551). The support bar (553) is disposed between the clamping unit bracket (552) and the arc-shaped clamping block (554). The arc-shaped clamping block (554) is disposed facing the interior of the positioning box (52).

10. The deep hole boring machine for a self-priming pump bearing housing according to claim 9, characterized in that: The inner side of the arc-shaped clamping block (554) and the workpiece covering pad (54) work together to fit against the outer wall of the self-priming pump bearing seat. The support strips (553) are distributed at intervals along the arc of the arc-shaped clamping block (554) to reinforce the arc-shaped clamping block (554).

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