Inner hole grooving device and using method

Abstract

The invention provides an inner hole grooving device and a using method. The inner hole grooving device comprises a grooving device body installed on a machine tool tailstock, the grooving device body is coaxial with a workpiece installed on a machine tool chuck, and a plurality of sliding supporting bases are arranged between the grooving device body and a machine tool sliding rail; the grooving device comprises a shell supporting assembly and an internal feeding assembly, the internal feeding assembly is located in the shell supporting assembly and slides, a cutting tool moving in the radial direction is arranged at the end of the shell supporting assembly, and a tool in the cutting tool is used for cutting the inner wall of the workpiece; the cutting tool is located at the end of the grooving fixing cylinder through a clamping groove structure and slides in the radial direction, a dovetail wedge block is fixedly arranged on the bevel edge of the right-angle driving plate, a dovetail sliding groove is formed in the bottom of the cutting tool, and the dovetail wedge block abuts against the interior of the dovetail sliding groove. According to the inner hole grooving device, through the precise design and the efficient control system, the machining precision and stability are improved, the operation and maintenance process is simplified, and the overall production efficiency and product quality are improved.

Description

Technical Field

[0001] The invention relates to the field of machining, and in particular to an inner hole grooving device and a use method thereof. Background Art

[0002] In the field of mechanical processing, especially in the inner hole processing of long shaft workpieces, it is often necessary to process various grooves for installation and positioning in the hole. These grooves are usually used to install seals, bearings or other components, and have high requirements for dimensional accuracy and surface quality. However, the existing grooving tools have the following problems when processing long shaft workpieces: Length limitation: Traditional grooving tools are difficult to adapt to the processing needs of long-axis workpieces due to their structural design and size limitations. The length of long-axis workpieces often exceeds the effective working range of traditional tools, making it impossible to complete the grooving of the entire axis at one time. In order to overcome the length limitation, it is usually necessary to groove the long-axis workpiece in sections, which not only increases processing time and cost, but may also cause cumulative errors due to multiple clamping, affecting the final processing accuracy.

[0003] Poor grooving accuracy: When grooving in the inner hole of a long-axis workpiece, the tool is susceptible to vibration and offset, especially without effective support, resulting in reduced grooving accuracy. Existing grooving tools often lack a high-precision position feedback system, making it difficult for operators to monitor and adjust the cutting depth in real time, which affects the consistency and accuracy of the grooving. Coolant supply and chip removal are key issues during the inner hole machining of long-axis workpieces. If cooling is insufficient or chips cannot be removed in time, it will cause the tool to overheat and the quality of the cutting surface to deteriorate.

[0004] Operational complexity: Traditional grooving tools often require manual adjustment of tool position and feed speed, which is complex and error-prone. The lack of an automated feed control system requires manual intervention for each grooving operation, reducing production efficiency.

[0005] Inconvenient maintenance and replacement: The tool replacement process of traditional tools is cumbersome and requires the disassembly of multiple parts, which increases downtime and maintenance costs. The wear of tools and other key components is difficult to detect, which may cause the equipment to operate in a bad state and affect the processing quality. Summary of the invention

[0006] The main purpose of the present invention is to provide an inner hole grooving device and a method of use to solve the problems in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: comprising a grooving device installed on the tailstock of a machine tool, the grooving device is coaxial with the workpiece installed on the chuck of the machine tool, and a plurality of sliding support seats are provided between the grooving device and the slide rail of the machine tool; The grooving device comprises a shell support assembly and an internal feed assembly, the internal feed assembly is located and slides inside the shell support assembly, and a radially movable cutting tool is provided at the end of the shell support assembly, wherein the tool in the cutting tool is used to cut the inner wall of the workpiece; The outer shell support assembly includes an outer tube, a boring bar joint, an extension tube and a connecting tube and a grooving fixed cylinder which are connected in sequence. A right-angle drive plate which is driven to move axially by an internal feed assembly is provided in the grooving fixed cylinder. The cutting tool slides radially at the end of the grooving fixed cylinder through a slot structure. A dovetail wedge is fixed on the hypotenuse of the right-angle drive plate. A dovetail groove is provided at the bottom of the cutting tool, and the dovetail wedge rests against the dovetail groove.

[0008] Preferably, the internal feed assembly comprises a screw rod, a transmission rod joint, a connecting rod, a transmission rod, an extension rod and a drive rod connected in sequence; A bottom cover is fixedly arranged at the tail of the outer tube, and the screw rod is threadedly connected with the bottom cover through a thread sleeve; A rotating shaft is provided between the end of the screw rod and the transmission rod joint, one end of the rotating shaft is rotated in the transmission rod joint through a bearing, and the other end is fixedly connected to the screw rod; The end of the driving rod is fixedly connected to the right-angle driving plate.

[0009] Preferably, a grating scale component is fixedly provided on one side of the outer tube, and a sliding reading head is provided on the grating scale in the grating scale component, and the reading head is fixedly connected to the connecting rod through an indicator rod clamp bracket.

[0010] Preferably, both ends of the grating scale are fixedly connected to the outer tube through a grating clamp bracket, through grooves are provided on both sides of the outer tube, and a clamp block is provided inside the grating clamp bracket, which abuts against the through groove to limit the rotation of the grating clamp bracket.

[0011] Preferably, a first through hole is provided in the groove fixing cylinder, a coolant nozzle is fixedly provided at one end of the first through hole, the coolant nozzle faces the tool, and the other end is communicated with the inside of the connecting pipe; The interiors of the connecting rod, transmission rod, extension rod and driving rod in the internal feeding assembly are hollow, a high-pressure water pipe joint connected to the connecting rod is provided on one side of the connecting rod, and the interior of the driving rod is connected to the interior of the connecting pipe through a second through hole; The coolant introduced into the high-pressure water pipe joint is sprayed out from the connecting rod, the transmission rod, the extension rod, the driving rod, the second through hole, the connecting pipe and the first through hole to the coolant spray head.

[0012] Preferably, square grooves are provided on both sides of the center hole in the slotted fixing cylinder, and the outer side of the right-angle driving plate abuts against and slides in the square grooves; A first clamping groove is arranged at the end of the groove fixing cylinder, and the cutting tool abuts against the first clamping groove and moves radially.

[0013] Preferably, a plurality of key slots are provided on the outer side of the grooving fixing cylinder, and guide key blocks are fixed in the key slots, and the guide key blocks are against the inner wall of the workpiece.

[0014] Preferably, a tool handle fixing seat is fixedly arranged on one side of the sliding seat in the cutting tool, a second clamping groove is arranged between the tool handle fixing seat and both sides of the sliding seat, and the second clamping groove is clamped in the first clamping groove at the end of the groove fixing cylinder; A dovetail slot is provided at the rear of the sliding seat, and the dovetail wedge rests in the dovetail slot; The tool is fixed in the tool handle fixing seat by means of bolts and a tool handle pressing block.

[0015] Preferably, a fixed plate is fixedly provided at the end of the machine tool slide rail, a motor is fixedly provided on the fixed plate, a rotating feed screw is provided between the two machine tool slide rails, one end of the feed screw is fixedly connected to the output shaft of the motor, and the other end rests on the machine tool through a bearing seat, and the bottom of the machine tool tailstock is threadedly connected to the feed screw through a thread sleeve.

[0016] A method for using an inner hole grooving device, the method steps are as follows: S1. The workpiece is mounted on the chuck of the machine tool, the grooving device is fixedly mounted in the tailstock of the machine tool, and a sliding support seat is set up in the middle of the grooving device to ensure that the workpiece and the grooving device are coaxially arranged; S2, driving the grooving device and the tool to move to the grooving position inside the workpiece through the tailstock of the machine tool; S3, by driving the screw rod to rotate, the internal feed assembly and the right-angle drive plate are pushed to move axially, thereby driving the cutting tool on the right-angle drive plate to move radially, so that the tool cuts and grooves the inner wall of the workpiece; S4. When the internal feed assembly moves as a whole, the reading head is driven to move on the grating scale through the indicator rod clamp bracket, and the tool cutting depth is fed back. After the cutting groove reaches the specified depth, the tool is retracted to complete the groove.

[0017] The present invention provides an inner hole grooving device and a method of use, with the following beneficial effects: 1. By precisely aligning the workpiece and the grooving device and keeping them coaxial, the positioning accuracy of the tool during the cutting process is ensured. The use of grating rulers and reading heads for position feedback monitors the cutting depth of the tool in real time, improving the processing accuracy.

[0018] 2. A sliding support seat is set up in the middle of the grooving device to provide additional support and enhance the stability of the entire device. The guide key block set on the outside of the grooving fixed cylinder abuts against the inner wall of the workpiece, reducing vibration during cutting and ensuring cutting stability.

[0019] 3. The design of the internal feed assembly and external support structure makes installation, disassembly and maintenance more convenient. The coolant is sprayed directly into the cutting area through the hollow internal feed assembly, which not only plays a cooling role, but also helps chip removal, reducing maintenance workload. The structural design facilitates regular inspection of wear and fastener status to ensure long-term stable operation of the equipment.

[0020] 4. Combined with the CNC system, it can realize automatic feed control and improve production efficiency. The tool is fixed in the tool holder holder by bolts and tool holder blocks, which is convenient for fast replacement of different types of tools to meet different processing requirements.

[0021] 5. Through the design of right-angle drive plate and dovetail wedge, radial movement of tool is realized, which is suitable for various internal hole grooving requirements. Through the cooperation of motor and feed screw, feed speed and direction can be accurately controlled to meet different processing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a front view of the overall structure of the present invention; Figure 2 It is a partial front sectional view of the machine tool of the present invention; Figure 3 is a partial cross-sectional view of the grooving device of the present invention from the front; Figure 4 The present invention Figure 3 Enlarged view of the mid-tail; Figure 5 The present invention Figure 4 Middle CC section; Figure 6 The present invention Figure 4 Middle DD section; Figure 7 is a partial cross-sectional view of the grooving device of the present invention from above; Figure 8 is a sectional view of the transmission connection of the internal feed assembly of the present invention; Fig. 9 is a side view of the grooved fixed cylindrical shaft of the present invention; Fig.10 This is a front view of the groove fixing cylinder of the present invention; Fig.11 The present invention Fig.10 Middle AA section view; Fig.12 is a top view of a right-angle drive plate of the present invention; Fig.13 is a side view of the cutting tool axis of the present invention; Fig.14 is a side view of the cutting tool of the present invention; Fig.15 The present invention Fig.10 Middle BB section view; In the figure: machine tool 1; workpiece 2; sliding support seat 3; machine tailstock 4; grooving device 5; outer tube 501; through groove 5011; boring bar joint 502; extension tube 503; connecting tube 504; grooving fixing tube 505; first clamping groove 5051; key groove 5052; first through hole 5053; center hole 5054; square groove 5055; cutting tool 506; sliding seat 5061; tool holder fixing seat 5062; tool 5063; dovetail slide 5064; second clamping groove 5065; tool holder pressing block 5066; grating ruler component 5 07; bottom cover 508; screw rod 509; rotating shaft 510; transmission rod joint 511; connecting rod 512; transmission rod 513; extension rod 515; driving rod 516; second through hole 5161; right-angle driving plate 517; dovetail wedge 5171; indicator rod clamp bracket 518; grating ruler 519; reading head 520; grating clamp bracket 521; block 5211; high-pressure water pipe joint 522; coolant nozzle 523; machine tool slide rail 6; fixing plate 7; motor 8; machine tool chuck 9; feed screw 10; thread sleeve 11. DETAILED DESCRIPTION

[0023] Example 1 like Figures 1 to 15 As shown, an internal hole grooving device comprises a grooving device 5 mounted on a machine tool tailstock 4, the grooving device 5 is coaxial with a workpiece 2 mounted on a machine tool chuck 9, and a plurality of sliding support seats 3 are provided between the grooving device 5 and the machine tool slide rail 6; The grooving device 5 comprises a shell support assembly and an internal feed assembly, the internal feed assembly is located and slides inside the shell support assembly, and a radially movable cutting tool 506 is provided at the end of the shell support assembly, and a tool 5063 in the cutting tool 506 is used to cut the inner wall of the workpiece 2; The outer shell supporting assembly includes an outer tube 501, a boring bar joint 502, an extension tube 503, a connecting tube 504 and a groove fixing cylinder 505 which are connected in sequence. A right-angle driving plate 517 which is driven to move axially by an internal feeding assembly is provided in the groove fixing cylinder 505. The cutting tool 506 is located at the end of the groove fixing cylinder 505 through a slot structure and slides radially. A dovetail wedge 5171 is fixed on the hypotenuse of the right-angle driving plate 517. A dovetail groove 5064 is provided at the bottom of the cutting tool 506. The dovetail wedge 5171 rests against the dovetail groove 5064.

[0024] The cutting tool 506 moves radially on the grooving fixed cylinder 505 located at the end of the shell support assembly. The cutting tool 506 is driven by the right-angle driving plate 517 driven by the internal feed assembly. The right-angle driving plate 517 moves in the dovetail groove 5064 at the bottom of the cutting tool 506 through the dovetail wedge block 5171 on the bevel edge, thereby pushing the cutting tool 506 to move radially, thereby cutting and grooving inside the workpiece 2.

[0025] The outer shell support assembly includes an outer tube 501, a boring bar joint 502, an extension tube 503, a connecting tube 504 and a groove fixing tube 505. These components together form a stable structure, ensuring that the entire device can be accurately positioned to the position to be processed. The internal feed assembly is located inside the outer shell support assembly and is responsible for driving the right-angle drive plate 517 to move along the axial direction. This movement is the basis for achieving radial displacement of the cutting tool. The part of the cutting tool 506 that directly participates in the cutting operation is designed with a dovetail groove 5064 at the bottom, which is used in conjunction with the dovetail wedge 5171 on the right-angle drive plate. When the right-angle drive plate is moved by the internal feed assembly, the force is transmitted to the cutting tool through the inclined contact, causing the tool to move radially outward or inward, thereby performing a cutting action.

[0026] The right-angle drive plate 517 and the dovetail wedge 5171 work together to control the radial position adjustment of the cutting tool. The right-angle drive plate moves forward or backward according to the power provided by the internal feed assembly; during the movement of the right-angle drive plate, the cutting tool is pushed to make corresponding radial movements.

[0027] Sliding support seat 3: It is arranged between the grooving device and the machine tool slide rail, providing necessary support and ensuring the stability of the entire device during operation.

[0028] Preferably, the internal feeding assembly includes a screw rod 509, a transmission rod joint 511, a connecting rod 512, a transmission rod 513, an extension rod 515 and a driving rod 516 connected in sequence; A bottom cover 508 is fixedly provided at the tail of the outer tube 501, and a screw rod 509 is threadedly connected to the bottom cover 508 through a thread sleeve; A rotating shaft 510 is provided between the end of the screw rod 509 and the transmission rod joint 511. One end of the rotating shaft 510 is rotated in the transmission rod joint 511 through a bearing, and the other end is fixedly connected to the screw rod 509. The end of the driving rod 516 is fixedly connected to the right-angle driving plate 517 .

[0029] The rotation of the lead screw 509 can push the transmission rod joint 511, the connecting rod 512, the transmission rod 513, the extension rod 515, the driving rod 516 and the right-angle driving plate 517 to move, thereby causing the cutting tool 506 to move radially for cutting.

[0030] When the screw rod 509 rotates, it moves forward and backward through the threaded fit between the screw sleeve and the bottom cover 508. This movement is transmitted to the driving rod 516 through a series of connecting parts, thereby driving the right-angle driving plate 517 and the dovetail wedge 5171 thereon. Since the dovetail wedge abuts against the dovetail slot 5064 at the bottom of the cutting tool 506, as the right-angle driving plate moves, the cutting tool will also move outward or inward in the radial direction accordingly, thereby completing the cutting operation inside the workpiece.

[0031] Preferably, a grating scale component 507 is fixedly provided on one side of the outer tube 501 , and a sliding reading head 520 is provided on the grating scale 519 in the grating scale component 507 , and the reading head 520 is fixedly connected to the connecting rod 512 via an indicator rod clamp bracket 518 .

[0032] The grating ruler 519 is mounted on one side of the outer tube 501 as a fixed reference point and is engraved with fine lines or grid patterns. The reading head 520 slides along the grating ruler and detects the line changes on the grating ruler through the photoelectric effect, thereby reading the current position information. The indicator rod clamp bracket 518 fixes the reading head 520 on the connecting rod 512 to ensure that when the connecting rod moves, the reading head can follow the movement and accurately reflect the position changes of the internal feed assembly.

[0033] As the screw rod 509 rotates, the entire internal feed assembly moves axially, and the connecting rod 512 moves accordingly, driving the reading head 520 connected thereto. Since the reading head is close to the grating ruler 519, it can capture the position change relative to the grating ruler in real time, and convert this data into digital signals and transmit them to the control system. In this way, the control system can accurately know the current feed position, and then adjust the motor output to achieve the required processing accuracy.

[0034] Preferably, both ends of the grating scale 519 are fixedly connected to the outer tube 501 through a grating clamp bracket 521, through grooves 5011 are provided on both sides of the outer tube 501, and a clamping block 5211 is provided inside the grating clamp bracket 521, and the clamping block 5211 abuts against the through groove 5011, thereby limiting the rotation of the grating clamp bracket 521.

[0035] The grating clamp bracket 521 is used to firmly fix the grating ruler 519 on the outer tube 501. It can provide sufficient rigidity to support the grating ruler. The clamping block 5211 is located at one or more protruding parts inside the grating clamp bracket, and they are designed to be embedded in the through grooves 5011 on both sides of the outer tube. The long strip openings of the through grooves 5011 on both sides of the outer tube 501 provide a position for positioning and locking the clamping block 5211.

[0036] Preferably, a first through hole 5053 is provided in the groove fixing cylinder 505, a coolant nozzle 523 is fixedly provided at one end of the first through hole 5053, the coolant nozzle 523 faces the cutter 5063, and the other end is communicated with the inside of the connecting tube 504; The interiors of the connecting rod 512, the transmission rod 513, the extension rod 515 and the driving rod 516 in the internal feeding assembly are hollow, and a high-pressure water pipe connector 522 is provided on one side of the connecting rod 512 to communicate therewith, and the interior of the driving rod 516 is communicated with the interior of the connecting pipe 504 via a second through hole 5161; The coolant introduced into the high-pressure water pipe joint 522 is sprayed out from the connecting rod 512, the transmission rod 513, the extension rod 515, the driving rod 516, the second through hole 5161, the connecting pipe 504 and the first through hole 5053 to the coolant nozzle 523.

[0037] The coolant nozzle 523 is located at one end of the first through hole 5053 in the groove fixing cylinder 505 and faces the tool 5063. This design ensures that the coolant is directly sprayed to the cutting area, effectively reducing the cutting temperature and thermal deformation, while also helping to flush away the chips and keep the working area clean.

[0038] The connecting rod 512, the transmission rod 513, the extension rod 515 and the driving rod 516 are all hollow in design, forming a continuous coolant channel. The high-pressure water pipe connector 522 is connected to the connecting rod 512, so that the coolant can enter the entire coolant channel from the external pumping system.

[0039] The second through hole 5161 is disposed on the driving rod 516 , and is used to connect the passage between the inside of the driving rod and the connecting tube 504 , so as to ensure that the coolant can flow smoothly to the first through hole 5053 .

[0040] After entering from the high-pressure water pipe joint 522, the coolant passes through the connecting rod 512, the transmission rod 513, the extension rod 515, the driving rod 516 in sequence, and then enters the connecting pipe 504 through the second through hole 5161, and finally reaches the coolant nozzle 523 through the first through hole 5053, where it is sprayed onto the cutting area on the tool 5063.

[0041] Preferably, square grooves 5055 are provided on both sides of the center hole 5054 in the slotted fixed cylinder 505, and the outer side of the right-angle driving plate 517 abuts against and slides in the square grooves 5055; A first clamping groove 5051 is formed at the end of the groove fixing cylinder 505 , and the cutting tool 506 abuts against the first clamping groove 5051 and moves radially.

[0042] The center hole 5054 is located in the slot fixing cylinder 505, providing an axial passage for the entire device, allowing the internal feed assembly and other components to pass through. The square grooves 5055 are arranged on both sides of the center hole 5054, providing sliding tracks for the right-angle drive plate 517. The outer side of the right-angle drive plate is tightly matched with the square groove to ensure that it can only move along a predetermined path, that is, in the radial direction, thereby driving the cutting tool 506 to perform precise radial displacement.

[0043] The first slot 5051 is provided at the end of the slot fixing cylinder 505, and is used to support and guide the radial movement of the cutting tool 506. The cutting tool abuts against this slot and can slide freely in the radial direction under the action of the dovetail wedge 5171 while maintaining the correct positioning.

[0044] The square groove 5055 is used to guide the right-angle driving plate 517 with a square or rectangular cross-section, ensuring that the driving plate can only move in the expected direction, reducing unnecessary shaking or deviation, and improving processing accuracy.

[0045] The first groove 5051 provides a stable fulcrum for the cutting tool 506, ensuring that the tool will not tilt or otherwise change position during operation, which is crucial to maintaining consistent cutting quality and depth.

[0046] Preferably, a plurality of key slots 5052 are provided on the outside of the groove fixing cylinder 505, and a guide key block is fixed in the key slot 5052, and the guide key block abuts against the inner wall of the workpiece 2. When cutting, the guide key block abuts against the inner wall of the workpiece 2 to reduce the vibration during cutting and avoid affecting the cutting accuracy.

[0047] When the grooving fixed cylinder 505 is inserted into the inner hole of the workpiece 2, the guide key block will rest against the inner wall of the workpiece. This ensures that the grooving device maintains the correct center position throughout the cutting process to prevent the cutting quality from being affected by offset. The contact between the guide key block and the inner wall of the workpiece increases the rigidity of the entire system and helps to absorb and disperse the vibrations generated during the cutting process. This reduces the vibration of the tool and ensures the smoothness and dimensional accuracy of the cutting surface. Through the action of multiple guide key blocks, any unexpected movement of the grooving fixed cylinder 505 relative to the workpiece 2, such as rotation or radial offset, can be effectively limited, thereby further improving the processing accuracy. The guide key block can also play a certain self-centering role, helping to quickly and accurately place the grooving device in the center of the inner hole of the workpiece, especially when operated manually, which can greatly simplify the alignment process.

[0048] Preferably, a tool handle fixing seat 5062 is fixedly disposed on one side of the sliding seat 5061 in the cutting tool 506, and a second clamping groove 5065 is disposed between the tool handle fixing seat 5062 and both sides of the sliding seat 5061, and the second clamping groove 5065 is clamped in the first clamping groove 5051 at the end of the groove fixing cylinder 505; A dovetail slot 5064 is provided at the rear of the sliding seat 5061, and a dovetail wedge 5171 abuts against the dovetail slot 5064; The tool 5063 is fixed in the tool handle fixing seat 5062 by means of bolts and a tool handle pressing block 5066 .

[0049] The sliding seat 5061 is the main supporting component of the cutting tool 506. It cooperates with the dovetail wedge 5171 on the right-angle driving plate 517 through the dovetail slide 5064 to achieve radial movement. The tool handle fixing seat 5062 is located on one side of the sliding seat 5061 and is used to fix the tool 5063. A second clamping groove 5065 is provided between the tool handle fixing seat and the two sides of the sliding seat. The clamping groove is clamped into the first clamping groove 5051 at the end of the groove fixing cylinder 505 to ensure that the entire tool assembly can move smoothly radially in the groove fixing cylinder. It provides additional guiding and positioning functions to prevent the tool from being offset or rotating during movement.

[0050] The dovetail slot 5064 is located at the tail of the sliding seat 5061 and is tightly matched with the dovetail wedge 5171 on the right-angle drive plate 517. When the right-angle drive plate moves, the dovetail wedge pushes the sliding seat to move in the radial direction through the inclined surface, thereby driving the entire tool to perform a cutting operation.

[0051] The cutter 5063 is fixed in the cutter handle fixing seat 5062 by bolts and the cutter handle pressing block 5066. This fixing method is both firm and convenient to disassemble, allowing different types of cutters to be replaced as needed.

[0052] When the internal feed assembly drives the right-angle drive plate 517 to move, the dovetail wedge 5171 pushes the sliding seat 5061 along the dovetail slot 5064. The sliding seat 5061 moves radially together with the tool holder fixing seat 5062 and the tool 5063. Due to the cooperation between the second clamping groove 5065 and the first clamping groove 5051, the stability and accuracy of the tool during the movement are ensured. The tool 5063 cuts the inner wall of the workpiece 2, and the coolant is sprayed from the coolant nozzle 523 to help cooling and chip removal.

[0053] Preferably, a fixed plate 7 is fixedly provided at the end of the machine tool slide rail 6, a motor 8 is fixedly provided on the fixed plate 7, a rotating feed screw 10 is provided between the two machine tool slide rails 6, one end of the feed screw 10 is fixedly connected to the output shaft of the motor 8, and the other end rests on the machine tool through a bearing seat, and the bottom of the machine tool tailstock 4 is threadedly connected to the feed screw 10 through a thread sleeve 11.

[0054] The fixed plate 7 is located at the end of the machine tool slide rail 6 and is used to install the motor 8. The fixed plate provides a stable support to ensure that the motor does not produce unnecessary vibration or displacement during operation. The motor 8 is installed on the fixed plate 7 and is the power source of the entire feed system. The motor directly drives the feed screw 10 through its output shaft, thereby driving the machine tool tailstock 4 to move along the slide rail.

[0055] The feed screw 10 is a long threaded rod, one end of which is fixedly connected to the output shaft of the motor 8, and the other end is against the machine tool through a bearing seat. The function of the feed screw is to convert the rotational motion of the motor into linear motion, thereby pushing the machine tool tailstock 4 to move along the machine tool slide rail 6. The thread sleeve 11 is installed at the bottom of the machine tool tailstock 4 and is threadedly connected to the feed screw 10. When the feed screw rotates, the thread sleeve moves along the thread line of the screw, thereby driving the entire machine tool tailstock 4 to move forward or backward along the slide rail direction.

[0056] When the motor 8 is started and rotated, it drives the feed screw 10 to rotate through the output shaft. The rotation of the feed screw 10 is transmitted to the threaded sleeve 11 through the threaded connection, so that the threaded sleeve moves along the axial direction of the screw. Since the threaded sleeve 11 is fixed to the bottom of the machine tool tailstock 4, the entire machine tool tailstock will also move along the machine tool slide rail 6 as the threaded sleeve moves. By controlling the speed and direction of the motor, the position of the machine tool tailstock can be accurately controlled, thereby achieving accurate processing of the workpiece 2.

[0057] Example 2 like Figures 1 to 15 As shown, in combination with Example 1, a method for using an inner hole grooving device is further described, and the method steps are as follows: S1. Workpiece Installation and Alignment Installing the workpiece: First, the workpiece 2 to be processed is firmly installed on the machine tool chuck 9.

[0058] Install the grooving device: The grooving device 5 is fixedly installed in the tailstock 4 of the machine tool, and ensures that it is coaxially arranged with the workpiece 2. In order to ensure stability, a sliding support seat 3 is set up in the middle of the grooving device 5 to provide additional support.

[0059] S2. Move to cutting position Moving the grooving device: The grooving device 5 and the tool 5063 are moved by the tailstock 4 of the machine tool to enter the predetermined grooving position inside the workpiece 2. This process needs to be slow and smooth to avoid any unnecessary shock or vibration.

[0060] S3. Cutting and grooving Drive the screw rod to rotate: Start the motor or manually start the screw rod 509 to rotate. The rotation of the screw rod pushes the right-angle drive plate 517 to move axially through the internal feed assembly.

[0061] Radially moving tool: As the right-angle drive plate 517 moves, the dovetail wedge 5171 abuts against the dovetail groove 5064 at the bottom of the cutting tool 506, pushing the tool 506 to move radially, so that the tool 5063 cuts and grooves the inner wall of the workpiece 2.

[0062] S4. Monitoring and retraction Feedback of cutting depth: When the internal feed assembly moves as a whole, the indicator rod clamp bracket 518 will drive the reading head 520 to move on the grating scale 519, and provide real-time feedback of the cutting depth of the tool 5063.

[0063] Reaching the specified depth: When the reading head 520 indicates that the tool has reached the predetermined cutting depth, the feeding action stops.

[0064] Retract tool: Control the internal feed assembly to move in the reverse direction, so that the tool 5063 retracts from the inner wall of the workpiece 2, completing the grooving operation.

[0065] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. An inner hole grooving device, characterized in that: It comprises a grooving device (5) mounted on a machine tool tailstock (4), the grooving device (5) being coaxial with a workpiece (2) mounted on a machine tool chuck (9), and a plurality of sliding support seats (3) being provided between the grooving device (5) and a machine tool slide rail (6); The grooving device (5) comprises a shell support assembly and an internal feed assembly, the internal feed assembly is slidably disposed inside the shell support assembly, a radially movable cutting tool (506) is provided at the end of the shell support assembly, and a tool (5063) in the cutting tool (506) is used to cut the inner wall of the workpiece (2); The housing support assembly comprises an outer tube (501), a boring bar joint (502), an extension tube (503), a connecting tube (504) and a groove fixing cylinder (505) which are connected in sequence. A right-angle driving plate (517) which is driven to move axially by an internal feeding assembly is arranged inside the groove fixing cylinder (505). The cutting tool (506) is located at the end of the groove fixing cylinder (505) through a slot structure and slides radially. A dovetail wedge (5171) is fixed on the oblique side of the right-angle driving plate (517). A dovetail slide groove (5064) is arranged at the bottom of the cutting tool (506). The dovetail wedge (5171) abuts against the dovetail slide groove (5064).

2. The inner hole grooving device according to claim 1, characterized in that: The internal feeding assembly comprises a screw rod (509), a transmission rod joint (511), a connecting rod (512), a transmission rod (513), an extension rod (515) and a driving rod (516) which are connected in sequence; A bottom cover (508) is fixedly provided at the tail of the outer tube (501), and the screw rod (509) is threadedly connected to the bottom cover (508) via a threaded sleeve; A rotating shaft (510) is provided between the end of the screw rod (509) and the transmission rod joint (511); one end of the rotating shaft (510) is rotated in the transmission rod joint (511) through a bearing, and the other end is fixedly connected to the screw rod (509); The end of the driving rod (516) is fixedly connected to the right-angle driving plate (517).

3. The inner hole grooving device according to claim 1, characterized in that: A grating ruler component (507) is fixedly provided on one side of the outer tube (501), a grating ruler (519) in the grating ruler component (507) is provided with a sliding reading head (520), and the reading head (520) is fixedly connected to the connecting rod (512) via an indicator rod clamp bracket (518).

4. The inner hole grooving device according to claim 3, characterized in that: The grating scale (519) is fixedly connected to the outer tube (501) at both ends through a grating clamp bracket (521); through grooves (5011) are provided on both sides of the outer tube (501); a clamping block (5211) is provided inside the grating clamp bracket (521); the clamping block (5211) abuts against the through groove (5011), thereby limiting the rotation of the grating clamp bracket (521).

5. The inner hole grooving device according to claim 1, characterized in that: A first through hole (5053) is provided in the groove fixing cylinder (505), a coolant nozzle (523) is fixedly provided at one end of the first through hole (5053), the coolant nozzle (523) faces the cutter (5063), and the other end is communicated with the interior of the connecting pipe (504); The interiors of the connecting rod (512), the transmission rod (513), the extension rod (515), and the driving rod (516) in the internal feeding assembly are hollow; a high-pressure water pipe connector (522) communicating with the connecting rod (512) is provided on one side thereof; the interior of the driving rod (516) is communicated with the interior of the connecting pipe (504) via a second through hole (5161); The coolant introduced into the high-pressure water pipe joint (522) is sprayed out from the connecting rod (512), the transmission rod (513), the extension rod (515), the driving rod (516), the second through hole (5161), the connecting pipe (504) and the first through hole (5053) to the coolant spray head (523).

6. The inner hole grooving device according to claim 1, characterized in that: Square grooves (5055) are provided on both sides of the center hole (5054) in the slotted fixed cylinder (505), and the outer side of the right-angle driving plate (517) abuts against the square grooves (5055) to slide; A first clamping groove (5051) is provided at the end of the groove cutting fixing cylinder (505), and the cutting tool (506) abuts against the first clamping groove (5051) to move radially.

7. The inner hole grooving device according to claim 7, characterized in that: A plurality of key slots (5052) are arranged on the outside of the slotting fixed cylinder (505), and a guide key block is fixedly arranged in the key slot (5052), and the guide key block abuts against the inner wall of the workpiece (2).

8. The inner hole grooving device according to claim 1, characterized in that: A tool handle fixing seat (5062) is fixedly provided on one side of a sliding seat (5061) in the cutting tool (506), a second clamping groove (5065) is provided between the tool handle fixing seat (5062) and both sides of the sliding seat (5061), and the second clamping groove (5065) is clamped in the first clamping groove (5051) at the end of the groove fixing cylinder (505); A dovetail slide groove (5064) is provided at the rear of the sliding seat (5061), and a dovetail wedge (5171) abuts against the dovetail slide groove (5064); The tool (5063) is fixed in the tool handle fixing seat (5062) by means of bolts and a tool handle pressing block (5066).

9. The inner hole grooving device according to claim 1, characterized in that: A fixed plate (7) is fixedly provided at the end of the machine tool slide rail (6), and a motor (8) is fixedly provided on the fixed plate (7). A rotating feed screw (10) is provided between the two machine tool slide rails (6). One end of the feed screw (10) is fixedly connected to the output shaft of the motor (8), and the other end rests on the machine tool through a bearing seat. The bottom of the machine tool tailstock (4) is threadedly connected to the feed screw (10) through a thread sleeve (11).

10. A method for using an inner hole grooving device according to any one of claims 1 to 9, wherein the method steps are as follows: S1. The workpiece (2) is mounted on a machine tool chuck (9), the grooving device (5) is fixedly mounted in a machine tool tailstock (4), and a sliding support seat (3) is set in the middle of the grooving device (5) to ensure that the workpiece (2) and the grooving device (5) are coaxially arranged; S2, driving the grooving device (5) and the tool (5063) to move to the grooving position inside the workpiece (2) through the tailstock (4) of the machine tool; S3, driving the screw rod (509) to rotate, thereby driving the internal feed assembly and the right-angle drive plate (517) to move axially, thereby driving the cutting tool (506) on the right-angle drive plate (517) to move radially, so that the tool (5063) cuts and grooves the inner wall of the workpiece (2); S4. When the internal feed assembly moves as a whole, the reading head (520) is driven to move on the grating ruler (519) through the indicator rod clamp bracket (518), and the cutting depth of the tool (5063) is fed back. After the groove is cut to the specified depth, the tool is retracted to complete the groove.

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