A multifunctional high-precision compound grinding machine with automatic tool changing function

Abstract

The present invention discloses a multifunctional high-precision composite grinding machine with an automatic tool-changing function, which relates to the technical field of grinding machines. The multifunctional high-precision composite grinding machine comprises a bed, wherein a water outlet is provided inside the bed; a torque turntable, wherein the torque turntable is mounted on the top of the bed, wherein a workpiece spindle housing is mounted on the top of the torque turntable; a first power mechanism, wherein the first power mechanism is mounted above the torque turntable, wherein the first power mechanism comprises a tool holder, a pitch circle assembly and a diamond pen, wherein the torque turntable is used to control the rotation of the tool holder, the pitch circle assembly and the diamond pen; a mounting base, wherein the mounting base is mounted on the top of the bed; a second power mechanism, wherein the second power mechanism is mounted on the top of the mounting base; a sheet metal cover around the tool magazine, wherein the sheet metal cover around the tool magazine is mounted on the outside of the workpiece spindle housing. The multifunctional high-precision composite grinding machine with an automatic tool-changing function achieves the purpose of improving the utilization efficiency of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of grinding machines, in particular to a multifunctional high-precision composite grinding machine with an automatic tool changing function. Background Art

[0002] A grinder is a machine tool that uses abrasive tools to grind the surface of a workpiece. This process can remove excess material from a workpiece to achieve the desired shape, size, and surface finish. Grinding can improve the surface accuracy of a workpiece, and is particularly important for workpieces with high surface quality requirements.

[0003] The invention patent with publication number CN116587087A discloses a composite grinding machine that combines the three functions of external cylindrical grinding, internal cylindrical grinding, and thread grinding. The positions of the headstock, external cylindrical grinding device, internal cylindrical grinding device, and thread grinding device can be flexibly adjusted, allowing the external cylindrical grinding, internal cylindrical grinding, and thread grinding operations to be flexibly switched. For the same workpiece, only one clamping is required to perform multiple types of grinding operations without switching machine tools. This can not only effectively improve the processing accuracy and processing quality of the workpiece, but also greatly improve the processing efficiency of the workpiece. However, setting up multiple bodies in the equipment to cooperate in multiple directions to complete the workpiece grinding is cumbersome. Summary of the Invention

[0004] In order to overcome the technical problem of arranging multiple bodies in the equipment to cooperate in multiple directions to complete workpiece grinding, which is cumbersome, the present invention provides a multifunctional high-precision compound grinding machine with an automatic tool changing function, comprising a bed, wherein a water outlet is opened inside the bed;

[0005] A torque turntable is mounted on the top of the bed, and a workpiece spindle box is mounted on the top of the torque turntable;

[0006] A first power mechanism, the first power mechanism is installed above the torque turntable, the first power mechanism includes a tool handle, a pitch circle assembly and a diamond pen, and the torque turntable is used to control the rotation of the tool handle, the pitch circle assembly and the diamond pen;

[0007] A mounting base, wherein the mounting base is mounted on the top of the bed;

[0008] The second power mechanism is installed on the top of the mounting base, and the second power mechanism includes an end face measuring instrument probe and an inner diameter measuring instrument body.

[0009] Preferably, it also includes:

[0010] The sheet metal cover of the tool magazine is installed on the outside of the workpiece spindle box, and the bottom of the sheet metal cover is installed with a tool magazine base sheet metal;

[0011] An automatic lifting door cylinder cover, which is installed outside the sheet metal cover around the tool magazine;

[0012] An X-axis grating ruler, wherein the X-axis grating ruler is arranged inside the second power mechanism;

[0013] The Z-axis grating ruler is arranged inside the second power mechanism.

[0014] Preferably, it also includes:

[0015] A Z-axis front accordion cover bracket, wherein the Z-axis front accordion cover bracket is arranged above the mounting base;

[0016] A Z-axis front accordion cover, wherein the Z-axis front accordion cover is arranged above the Z-axis front accordion cover bracket;

[0017] A Z-axis linear guide rail, wherein the Z-axis linear guide rail is installed inside the Z-axis front accordion cover bracket, and the Z-axis front accordion cover is slidably connected to the inside of the Z-axis linear guide rail;

[0018] A Z-axis screw feed assembly, the Z-axis screw feed assembly being arranged inside the Z-axis front accordion cover bracket;

[0019] An inner diameter measuring instrument base, the inner diameter measuring instrument base being mounted on the outside of the Z-axis front accordion cover;

[0020] An inner diameter measuring instrument bracket, the inner diameter measuring instrument bracket being mounted on the top of the inner diameter measuring instrument base;

[0021] A mounting frame is installed above the Z-axis front accordion cover, and the mounting frame is connected to the second power mechanism.

[0022] Preferably, the first power mechanism further comprises:

[0023] A mounting base plate, the mounting base plate is arranged outside the workpiece spindle housing, and a linear guide rail is opened inside the mounting base plate;

[0024] An L-shaped mounting plate is mounted inside a sheet metal cover surrounding the tool magazine. A grinding wheel and a tool holder chuck are mounted on the outside of the L-shaped mounting plate. The tool holder is mounted inside the tool holder chuck. Four tool holders are provided.

[0025] An oil cylinder connecting plate is installed on the top of the mounting base plate. A hydraulic oil cylinder is provided on the top of the oil cylinder connecting plate. The output end of the hydraulic oil cylinder is connected to the L-shaped mounting plate.

[0026] Preferably, the first power mechanism further comprises:

[0027] A dresser seat, the dresser seat being mounted on the outside of the workpiece spindle housing;

[0028] A dresser rod is arranged inside the dresser seat, and the diamond pen is connected to the dresser rod.

[0029] Preferably, the pitch circle assembly comprises:

[0030] A workpiece electric spindle, which is installed inside the workpiece spindle housing;

[0031] An oil cylinder receiving plate, the oil cylinder receiving plate is mounted on the outside of the workpiece electric spindle, and a rotary hydraulic oil cylinder is mounted on the outside of the oil cylinder receiving plate;

[0032] A chuck adapter, the chuck adapter being mounted on the outside of the workpiece electric spindle;

[0033] A thin film hydraulic chuck body, the thin film hydraulic chuck body being mounted on the outside of the chuck receiving plate;

[0034] A workpiece gear, the workpiece gear being mounted on the outside of the thin film hydraulic chuck body;

[0035] A pitch circle limiting column, the pitch circle limiting column being installed outside the membrane hydraulic chuck body;

[0036] A pitch circle tooling is installed on the outside of the film hydraulic chuck body, and three pitch circle toolings are provided.

[0037] Preferably, the second power mechanism further comprises:

[0038] An internal diameter measuring instrument front and rear adjustment mounting plate, the internal diameter measuring instrument front and rear adjustment mounting plate is mounted on the outside of the internal diameter measuring instrument bracket, and the internal diameter measuring instrument body is mounted on the outside of the internal diameter measuring instrument front and rear adjustment mounting plate;

[0039] Internal diameter measuring instrument measuring jaws, the internal diameter measuring instrument measuring jaws being mounted on the outside of the internal diameter measuring instrument front and rear adjustment mounting plate;

[0040] A grinding head cover is provided above the mounting frame, and a grinding head seat is provided inside the grinding head cover;

[0041] The tool-changing electric spindle is arranged inside the grinding head seat.

[0042] Preferably, the second power mechanism further comprises:

[0043] An X-axis rear accordion cover bracket, wherein the X-axis rear accordion cover bracket is arranged on the top of the mounting frame;

[0044] An X-axis screw feed assembly, wherein the X-axis screw feed assembly is arranged inside the mounting frame;

[0045] A cross-connecting slide, the cross-connecting slide being connected to the output end of the X-axis screw feed assembly, and the cross-connecting slide being connected to the grinding head cover;

[0046] An X-axis linear guide rail, wherein the X-axis linear guide rail is arranged inside the mounting frame, and the cross-connecting slide is slidably connected inside the X-axis linear guide rail;

[0047] An end face measuring instrument assembly is mounted on the top of the grinding head housing and is connected to a probe of the end face measuring instrument;

[0048] An X-axis front accordion cover is mounted on the top of the mounting frame;

[0049] A Z-axis rear accordion cover bracket, wherein the Z-axis rear accordion cover bracket is installed on the top of the mounting frame;

[0050] The Z-axis rear accordion cover is installed above the mounting frame, and the Z-axis rear accordion cover is connected to the Z-axis rear accordion cover bracket.

[0051] Preferably, the X-axis screw feed assembly includes:

[0052] A motor base is mounted inside the mounting frame, and an angular contact bearing, a coupling, and a servo motor are provided on the outside of the motor base;

[0053] A ball screw, the ball screw being connected to the motor seat, and the outside of the ball screw being provided with a combined bearing and a front support;

[0054] A nut seat is arranged on the outside of the ball screw, and a ball nut is arranged inside the nut seat.

[0055] The present invention provides a multifunctional high-precision composite grinding machine with an automatic tool changing function. It has the following beneficial effects:

[0056] 1. This multifunctional high-precision composite grinding machine with automatic tool changing function improves the accuracy of the equipment by setting up four axes. They are respectively the torque turntable rotation B-axis, the workpiece electric spindle rotation C-axis, the longitudinal screw feed X-axis, and the transverse screw feed Z-axis. The torque turntable rotation B-axis has a built-in arc grating scale, the workpiece electric spindle rotation C-axis has a built-in encoder, the longitudinal screw feed X-axis is equipped with a linear grating scale, and the transverse screw feed Z-axis is equipped with a linear grating scale. The four axes respectively realize data feedback and precise positioning of components through grating scales, encoders, etc. Existing grinding machines are equipped with multiple bodies in the equipment to cooperate in multiple directions to complete workpiece grinding, which is cumbersome. Therefore, a first power mechanism and a second power mechanism are set up, and four axes are set up. Two bodies and four axes are used instead of multiple bodies to cooperate in multiple directions to complete workpiece grinding, which simplifies the work and improves the efficiency of equipment use.

[0057] 2. This multifunctional, high-precision composite grinder with automatic tool changer features an enhanced configuration by being equipped with a face gauge probe. This allows for real-time measurement and data feedback. An oblique-push cylinder is incorporated into the face gauge assembly, allowing the probe to be angled downward toward the workpiece end face for data feedback. When measurement is not required, the cylinder retracts, moving the probe away from the workpiece to prevent interference with the grinding process. The probe can be adjusted by rotating the face gauge assembly left and right, or up and down, enabling measurement at various locations to accommodate workpiece variations.

[0058] 3. This multifunctional, high-precision composite grinding machine with automatic tool changer features an internal diameter gauge body, enhancing its equipment configuration. The gauge jaws are mounted concentrically with the toolholder grinding wheel rod connected to the tool changer electric spindle. The gauge body is controlled by a hydraulic cylinder, enabling the jaws to be extended or closed. Depending on the workpiece's internal hole size, grinding wheel holders of varying diameters can be selected from the sheet metal cover surrounding the tool magazine. The gauge jaws are automatically adjusted to ensure they always remain concentrically on the outside of the grinding wheel. During measurement, the entire tool changer electric spindle, along with the toolholder grinding wheel, is pushed backward, while the jaws remain in place, minimizing interference. The gauge bracket is mounted on the gauge base for stability and reliability. The gauge mounting plate can also be manually adjusted forward and backward, depending on the length of the workpiece.

[0059] 4. This multifunctional, high-precision compound grinder with automatic tool changer features four axes for improved efficiency and versatility. The torque turntable rotates the B-axis, enabling taper grinding. The workpiece electric spindle rotates the C-axis, allowing the workpiece to stop at the desired grinding position. Both the B and C axes feature 360° indexing. The Z and X axes are mounted in a cross-shaped arrangement, saving installation height. Grinding wheel dressing is achieved by rotating the dresser via the B-axis. This system can perform workpiece dressing operations on inner holes, stepped holes, internal and external tapers, and internal and external end faces, including automatic rough grinding, fine grinding, automatic grinding wheel dressing, and automatic and manual compensation.

[0060] This multifunctional, high-precision composite grinder with automatic tool changer features four toolholders with grinding wheels of varying diameters and materials within the sheet metal housing surrounding the tool magazine, plus one mounted on the tool-changing electric spindle, for a total of five. A hydraulic cylinder at the top, coupled with a linear guide, creates an up-and-down motion to remove and install the toolholders. The toolholders' grinding wheels vary in diameter and material, enabling rough or fine grinding of various parts of varying sizes.

[0061] 6. This multifunctional high-precision composite grinder with automatic tool changing function uses a 12-inch film hydraulic chuck body, which can clamp workpieces with larger diameters. The rotary hydraulic cylinder at the tail of the workpiece electric spindle is connected by a pull rod to automatically adjust the clamping tightness of the film clamp. The outer tooth groove of the workpiece gear is fixed by two pitch circle limit columns to achieve a complete fit. In addition, with the three-part design, it can self-center the workpiece gear after clamping, so that the workpiece gear is always in the center of the film chuck, without the need for manual correction. The inner hole of the gear has a taper, and during grinding, the torque turntable can be rotated while the X-axis screw feed assembly is linked to move for interpolation grinding. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0063] Figure 2 It is another perspective schematic diagram of the present invention;

[0064] Figure 3 Schematic diagram of the internal structure of the present invention;

[0065] Figure 4 For the present invention Figure 3 Schematic diagram of the structure at A in the middle;

[0066] Figure 5 It is a side structural schematic diagram of the present invention;

[0067] Figure 6 This is a schematic diagram of the front structure of the present invention;

[0068] Figure 7 This is a schematic structural diagram of the first power mechanism of the present invention;

[0069] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at B in the middle;

[0070] Figure 9 This is a schematic diagram of the pitch circle assembly structure of the present invention;

[0071] Figure 10 This is a schematic structural diagram of the second power mechanism of the present invention;

[0072] Figure 11 For the present invention Figure 10 Schematic diagram of the structure at C in the middle;

[0073] Figure 12 It is a structural schematic diagram of the X-axis screw feed assembly of the present invention.

[0074] Figure: 1. Bed; 2. Water outlet; 3. Torque turntable; 4. First power mechanism; 401. L-shaped mounting plate; 402. Mounting base; 403. Cylinder connecting plate; 404. Hydraulic cylinder; 405. Grinding wheel; 406. Tool holder; 407. Tool holder chuck; 408. Pitch circle assembly; 4081. Workpiece electric spindle; 4082. Cylinder adapter; 4083. Rotary hydraulic cylinder; 4084. Chuck adapter; 4085. Thin-film hydraulic chuck body 4086, workpiece gear; 4087, pitch circle limit column; 4088, pitch circle fixture; 409, linear guide; 410, dresser seat; 411, dresser rod; 412, diamond pen; 5, mounting base; 6, second power mechanism; 601, internal diameter gauge front and rear adjustment mounting plate; 602, internal diameter gauge body; 603, internal diameter gauge measuring claw; 604, X-axis linear guide; 605, X-axis screw feed assembly; 6051, motor seat; 605 2. Coupling; 6053. Angular contact bearing; 6054. Servo motor; 6055. Ball screw; 6056. Nut seat; 6057. Ball nut; 6058. Combined bearing; 6059. Front support; 606. X-axis rear bellows cover bracket; 607. Cross-connecting slide; 608. Grinding head cover; 609. End face measuring instrument assembly; 610. End face measuring instrument probe; 611. X-axis front bellows cover; 612. Z-axis rear bellows cover; 613. Z Rear accordion cover bracket; 614, grinding head seat; 615, tool-changing electric spindle; 7, sheet metal cover around tool magazine; 8, automatic lifting door cylinder cover; 9, sheet metal base of tool magazine; 10, workpiece spindle box; 11, front accordion cover bracket of Z axis; 12, Z axis linear guide; 13, Z axis screw feed assembly; 14, inner diameter measuring instrument base; 15, front accordion cover of Z axis; 16, inner diameter measuring instrument bracket; 17, X axis grating scale; 18, Z axis grating scale; 19, mounting bracket. DETAILED DESCRIPTION

[0075] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described to better illustrate the principles of the invention and its practical application, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for specific applications.

[0076] like Figures 1-12 As shown, the present invention provides a technical solution: comprising a bed 1, wherein a water outlet 2 is provided inside the bed 1;

[0077] The torque turntable 3 is installed on the top of the bed 1. The workpiece spindle box 10 is installed on the top of the torque turntable 3. The interior of the torque turntable 3 is provided with a circular arc grating scale. The rotation axis of the torque turntable 3 is the B axis.

[0078] The first power mechanism 4 is installed above the torque turntable 3. The first power mechanism 4 includes a tool handle 406, a pitch circle assembly 408 and a diamond pen 412. The torque turntable 3 is used to control the rotation of the tool handle 406, the pitch circle assembly 408 and the diamond pen 412;

[0079] The mounting base 5 is mounted on the top of the bed 1;

[0080] The second power mechanism 6 is mounted on the top of the mounting base 5 and includes an end face measuring instrument probe 610 and an inner diameter measuring instrument body 602;

[0081] The tool magazine sheet metal cover 7 is installed on the outside of the workpiece spindle box 10, and the tool magazine base sheet metal 9 is installed at the bottom of the tool magazine sheet metal cover 7;

[0082] Automatic lifting door cylinder cover 8, the automatic lifting door cylinder cover 8 is installed on the outside of the sheet metal cover 7 around the tool magazine, and a safety door controlled by a cylinder is provided inside the automatic lifting door cylinder cover 8;

[0083] X-axis grating ruler 17, the X-axis grating ruler 17 is arranged inside the second power mechanism 6;

[0084] Z-axis grating ruler 18, the Z-axis grating ruler 18 is arranged inside the second power mechanism 6;

[0085] A Z-axis front accordion cover bracket 11 is provided above the mounting base 5;

[0086] A Z-axis front accordion cover 15 is provided above the Z-axis front accordion cover bracket 11;

[0087] The Z-axis linear guide 12 is installed inside the Z-axis front accordion cover bracket 11, and the Z-axis front accordion cover 15 is slidably connected to the inside of the Z-axis linear guide 12;

[0088] The Z-axis screw feed assembly 13 is matched with the Z-axis grating ruler 18. The Z-axis screw feed assembly 13 is arranged inside the Z-axis front accordion cover bracket 11. The Z-axis screw feed is a transverse screw feed;

[0089] The inner diameter measuring instrument base 14 is installed outside the Z-axis front accordion cover 15;

[0090] An inner diameter measuring instrument bracket 16 is mounted on the top of the inner diameter measuring instrument base 14;

[0091] The mounting frame 19 is installed above the Z-axis front accordion cover 15 , and the mounting frame 19 is connected to the second power mechanism 6 .

[0092] The first power mechanism 4 also includes:

[0093] A mounting base plate 402 is provided on the outside of the workpiece spindle housing 10 , and a linear guide rail 409 is provided inside the mounting base plate 402 ;

[0094] An L-shaped mounting plate 401 is mounted inside the sheet metal cover 7 of the tool magazine. A grinding wheel 405 and a tool holder chuck 407 are mounted on the outside of the L-shaped mounting plate 401. A tool holder 406 is mounted inside the tool holder chuck 407. Four tool holders 406 are provided.

[0095] Cylinder connecting plate 403, which is mounted on top of the mounting base plate 402. A hydraulic cylinder 404 is provided on top of the cylinder connecting plate 403, and the output end of the hydraulic cylinder 404 is connected to the L-shaped mounting plate 401;

[0096] The dresser seat 410 is mounted on the outside of the workpiece spindle housing 10;

[0097] The dresser rod 411 is disposed inside the dresser seat 410 , and the diamond pen 412 is connected to the dresser rod 411 .

[0098] The rotation axis of the torque turntable 3 rotates to drive the dresser seat 410 , the dresser rod 411 and the diamond pen 412 to rotate, thereby enabling the diamond pen 412 to dress the grinding wheel 405 .

[0099] The pitch circle assembly 408 includes:

[0100] The workpiece electric spindle 4081 has a built-in encoder and is installed inside the workpiece spindle housing 10. The workpiece electric spindle 4081 is a C-axis.

[0101] The oil cylinder receiving plate 4082 is installed on the outside of the workpiece electric spindle 4081, and a rotary hydraulic oil cylinder 4083 is installed on the outside of the oil cylinder receiving plate 4082;

[0102] A chuck receiving plate 4084 is mounted on the outside of the workpiece electric spindle 4081;

[0103] A thin film hydraulic chuck body 4085 is mounted on the outside of the chuck receiving plate 4084;

[0104] A workpiece gear 4086 is mounted on the outside of the thin film hydraulic chuck body 4085;

[0105] A pitch circle limiting column 4087 is installed outside the thin film hydraulic chuck body 4085;

[0106] The pitch circle tooling 4088 is installed on the outside of the thin film hydraulic chuck body 4085, and three pitch circle tooling 4088 are provided.

[0107] The film hydraulic chuck body 4085 uses a 12-inch body and can clamp workpieces with larger diameters. Through the rotary hydraulic cylinder 4083 at the tail of the workpiece electric spindle 4081, a pull rod is used to connect and automatically adjust the clamping tension of the film clamp. The outer tooth grooves of the workpiece gear 4086 are fixed by two pitch circle limit columns 4087 to achieve a complete fit. In addition, the three-part design can self-center the workpiece gear 4086 after clamping, so that the workpiece gear 4086 is always in the center of the film chuck, without the need for manual correction. The inner hole of the gear has a taper, so during grinding, the torque turntable 3 rotation axis can be rotated while the X-axis screw feed assembly 605 is linked to move for interpolation grinding.

[0108] The second power mechanism 6 also includes:

[0109] The inner diameter measuring instrument front and rear adjustment mounting plate 601 is installed on the outside of the inner diameter measuring instrument bracket 16, and the inner diameter measuring instrument body 602 is installed on the outside of the inner diameter measuring instrument front and rear adjustment mounting plate 601;

[0110] Internal diameter measuring instrument measuring jaws 603, which are mounted on the outside of the internal diameter measuring instrument front and rear adjustment mounting plate 601;

[0111] The grinding head cover 608 is arranged above the mounting frame 19, and a grinding head seat 614 is arranged inside the grinding head cover 608;

[0112] The tool-changing electric spindle 615 is arranged inside the grinding head seat 614;

[0113] X-axis rear accordion cover bracket 606, X-axis rear accordion cover bracket 606 is set on the top of the mounting frame 19;

[0114] The X-axis screw feed assembly 605 is matched with the X-axis grating ruler 17. The X-axis screw feed assembly 605 is arranged inside the mounting frame 19. The X-axis screw feed is a longitudinal screw feed;

[0115] A cross-connecting slide 607 is connected to the output end of the X-axis screw feed assembly 605 and is connected to the grinding head cover 608;

[0116] X-axis linear guide 604, the X-axis linear guide 604 is arranged inside the mounting frame 19, and the cross-connecting slide 607 is slidably connected inside the X-axis linear guide 604;

[0117] End face measuring instrument assembly 609, which is mounted on the top of the grinding head cover 608 and is connected to the end face measuring instrument probe 610;

[0118] X-axis front accordion cover 611, the X-axis front accordion cover 611 is installed on the top of the mounting frame 19;

[0119] Z-axis rear accordion cover bracket 613, Z-axis rear accordion cover bracket 613 is installed on the top of the mounting frame 19;

[0120] The Z-axis rear accordion cover 612 is installed above the mounting frame 19 , and the Z-axis rear accordion cover 612 is connected to the Z-axis rear accordion cover bracket 613 .

[0121] Equipped with an end-face gauge probe 610, real-time measurement and data feedback are possible. An oblique-push cylinder is installed within the end-face gauge assembly 609, allowing the end-face gauge probe 610 to be tilted downward toward the workpiece end face, enabling data feedback. When measurement is not required, the cylinder retracts, moving the end-face gauge probe 610 away from the workpiece, preventing it from interfering with the grinding process. The end-face gauge probe 610 can be adjusted by rotating it left and right, or up and down, via the end-face gauge assembly 609, enabling measurement at different positions to accommodate workpiece variations.

[0122] Equipped with an internal diameter gauge body 602, the internal diameter gauge jaws 603 are concentrically mounted with the tool holder 406 and grinding wheel 405 rod connected to the tool change electric spindle 615. The internal diameter gauge body 602 is controlled by a hydraulic cylinder, enabling the internal diameter gauge jaws 603 to be expanded or collapsed. Depending on the internal hole size of the workpiece, tool holders 406 of different diameters can be selected from the sheet metal cover 7 surrounding the tool magazine. The expansion of the internal diameter gauge jaws 603 is automatically adjusted to ensure that the internal diameter gauge jaws 603 are always concentrically positioned outside the grinding wheel 405. During measurement, the entire tool change electric spindle 615, along with the tool holder 406 and grinding wheel 405, is pushed backward, while the jaws remain in place, minimizing interference. The internal diameter gauge bracket 16 is mounted on the internal diameter gauge base 14 for stability and reliability. The internal diameter gauge mounting plate 601 can also be manually adjusted forward and backward according to the length of the workpiece.

[0123] Inside the tool magazine's sheet metal housing 7 are four toolholders 406 with grinding wheels 405 of varying diameters and materials, plus one toolholder mounted on the tool-changing electric spindle 615. The toolholders 406 are moved up and down by a hydraulic cylinder 404 at the top, cooperating with a linear guide 409.

[0124] When the air is ventilated, the nose end of the tool-changing electric spindle 615 sucks the tool handle 406 through the air lock. When the air is turned off, although the tool handle 406 is connected to the nose end of the tool-changing electric spindle 615, it has been loosened. The tool handle 406 in the tool magazine rotates the torque turntable 3 rotating axis, so that the tool handle 406 comes to the tool-changing position, and through the up and down pulling of the hydraulic cylinder 404, the Z-axis screw feed assembly 13 of the tool-changing electric spindle 615 is pushed forward and backward, and the tool is loaded and unloaded by the tool handle chuck 407 to realize the tool changing and loading action. The X-axis screw feed assembly 605 of the tool-changing electric spindle 615 moves left and right to perform the tool changing work of the remaining knives. The grinding wheel 405 of the tool handle 406 has different diameters and materials, which can realize rough grinding or fine grinding of different sizes of different parts.

[0125] X-axis screw feed assembly 605 includes:

[0126] The motor base 6051 is installed inside the mounting frame 19. The outside of the motor base 6051 is provided with an angular contact bearing 6053, a coupling 6052 and a servo motor 6054;

[0127] A ball screw 6055 is connected to the motor base 6051 , and a combined bearing 6058 and a front support 6059 are provided on the outside of the ball screw 6055 ;

[0128] The nut seat 6056 is arranged on the outside of the ball screw 6055, and a ball nut 6057 is arranged inside the nut seat 6056.

[0129] Working Principle: While machining a workpiece, the face gauge probe 610 is used for real-time measurement and data feedback. An oblique-push cylinder is installed in the face gauge assembly 609, allowing the face gauge probe 610 to be tilted downward toward the workpiece end face for data feedback. When measurement is no longer needed, the cylinder retracts, moving the face gauge probe 610 away from the workpiece. The face gauge probe 610 can be adjusted by rotating the face gauge assembly 609 left and right or up and down, enabling measurement at different positions to accommodate workpiece variations.

[0130] The internal diameter gauge body 602 and its measuring jaws 603 are mounted concentrically with the tool holder 406 and grinding wheel 405, which are connected to the tool change electric spindle 615. The internal diameter gauge body 602 is controlled by a hydraulic cylinder to expand or close the measuring jaws 603. Depending on the internal hole size of the workpiece, the measuring jaws 603 are automatically adjusted to the desired opening by selecting a grinding wheel 405 with a different diameter from the sheet metal cover 7 surrounding the tool magazine, ensuring that the measuring jaws 603 are always concentrically positioned outside the grinding wheel 405.

[0131] Inside the tool magazine's sheet metal housing 7 are four toolholders 406 with grinding wheels 405 of varying diameters and materials, plus one toolholder mounted on the tool-changing electric spindle 615. The toolholders 406 are moved up and down by a hydraulic cylinder 404 at the top, cooperating with a linear guide 409.

[0132] When the air is ventilated, the nose end of the tool-changing electric spindle 615 sucks the tool handle 406 through the air lock. When the air is turned off, although the tool handle 406 is connected to the nose end of the tool-changing electric spindle 615, it has been loosened. The tool handle 406 in the tool magazine rotates the torque turntable 3 rotating axis, so that the tool handle 406 comes to the tool-changing position, and through the up and down pulling of the hydraulic cylinder 404, the Z-axis screw feed assembly 13 of the tool-changing electric spindle 615 is pushed forward and backward, and the tool is loaded and unloaded by the tool handle chuck 407 to realize the tool changing and loading action. The X-axis screw feed assembly 605 of the tool-changing electric spindle 615 moves left and right to perform the tool changing work of the remaining knives. The grinding wheel 405 of the tool handle 406 has different diameters and materials, which can realize rough grinding or fine grinding of different sizes of different parts.

[0133] The rotation axis of the torque turntable 3 rotates to drive the dresser seat 410 , the dresser rod 411 and the diamond pen 412 to rotate, thereby enabling the diamond pen 412 to dress the grinding wheel 405 .

[0134] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making creative efforts should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. A multifunctional high-precision composite grinding machine with an automatic tool changing function, comprising a bed (1), characterized in that: A water outlet (2) is provided inside the bed (1); A torque turntable (3), the torque turntable (3) being mounted on the top of the bed (1), and a workpiece spindle housing (10) being mounted on the top of the torque turntable (3); a first power mechanism (4), the first power mechanism (4) being installed above the torque turntable (3), the first power mechanism (4) comprising a tool handle (406), a pitch circle assembly (408) and a diamond pen (412), the torque turntable (3) being used to control the rotation of the tool handle (406), the pitch circle assembly (408) and the diamond pen (412); A mounting base (5), wherein the mounting base (5) is mounted on the top of the bed (1); a second power mechanism (6), the second power mechanism (6) being mounted on the top of the mounting base (5), the second power mechanism (6) comprising an end face measuring instrument probe (610) and an inner diameter measuring instrument body (602); A tool magazine sheet metal cover (7) is installed on the outside of the workpiece spindle housing (10), and a tool magazine base sheet metal (9) is installed at the bottom of the tool magazine sheet metal cover (7); An automatic door lifting cylinder housing (8), the automatic door lifting cylinder housing (8) being mounted on the outside of the sheet metal housing (7) surrounding the tool magazine; An X-axis grating ruler (17), wherein the X-axis grating ruler (17) is arranged inside the second power mechanism (6); A Z-axis grating ruler (18), wherein the Z-axis grating ruler (18) is arranged inside the second power mechanism (6); The first power mechanism (4) further includes: A mounting base plate (402), the mounting base plate (402) being arranged outside the workpiece spindle housing (10), and a linear guide rail (409) being provided inside the mounting base plate (402); An L-shaped mounting plate (401) is mounted inside a sheet metal cover (7) surrounding the tool magazine, a grinding wheel (405) and a tool handle chuck (407) are mounted outside the L-shaped mounting plate (401), the tool handle (406) is mounted inside the tool handle chuck (407), and four tool handles (406) are provided; An oil cylinder connecting plate (403), the oil cylinder connecting plate (403) being mounted on the top of the mounting base plate (402), a hydraulic oil cylinder (404) being provided on the top of the oil cylinder connecting plate (403), and an output end of the hydraulic oil cylinder (404) being connected to the L-shaped mounting plate (401); The pitch circle assembly (408) includes: A workpiece electric spindle (4081), the workpiece electric spindle (4081) being installed inside the workpiece spindle housing (10); A cylinder receiving plate (4082), the cylinder receiving plate (4082) being mounted on the outside of the workpiece electric spindle (4081), and a rotary hydraulic cylinder (4083) being mounted on the outside of the cylinder receiving plate (4082); A chuck adapter (4084), wherein the chuck adapter (4084) is mounted on the outside of the workpiece electric spindle (4081); A thin film hydraulic chuck body (4085), the thin film hydraulic chuck body (4085) being mounted on the outside of the chuck receiving plate (4084); A workpiece gear (4086) is mounted on the outside of the thin film hydraulic chuck body (4085); A pitch circle limiting column (4087), wherein the pitch circle limiting column (4087) is installed outside the film hydraulic chuck body (4085); A pitch circle tool (4088) is installed outside the film hydraulic chuck body (4085), and three pitch circle tools (4088) are provided.

2. The multifunctional high-precision compound grinding machine with automatic tool changing function according to claim 1, characterized in that: Also includes: A Z-axis front accordion cover bracket (11), wherein the Z-axis front accordion cover bracket (11) is arranged above the mounting base (5); A Z-axis front accordion cover (15), wherein the Z-axis front accordion cover (15) is arranged above the Z-axis front accordion cover bracket (11); A Z-axis linear guide rail (12), wherein the Z-axis linear guide rail (12) is mounted inside the Z-axis front accordion cover bracket (11), and the Z-axis front accordion cover (15) is slidably connected to the inside of the Z-axis linear guide rail (12); A Z-axis screw feed assembly (13), wherein the Z-axis screw feed assembly (13) is arranged inside the Z-axis front accordion cover bracket (11); An inner diameter measuring instrument base (14), wherein the inner diameter measuring instrument base (14) is mounted on the outside of the Z-axis front accordion cover (15); An inner diameter measuring instrument bracket (16), wherein the inner diameter measuring instrument bracket (16) is mounted on the top of the inner diameter measuring instrument base (14); A mounting frame (19) is mounted above the Z-axis front accordion cover (15), and the mounting frame (19) is connected to the second power mechanism (6).

3. The multifunctional high-precision compound grinding machine with automatic tool changing function according to claim 1, characterized in that: The first power mechanism (4) further includes: A dresser seat (410), the dresser seat (410) being mounted outside the workpiece spindle housing (10); A trimmer rod (411) is provided inside the trimmer seat (410), and the diamond pen (412) is connected to the trimmer rod (411).

4. The multifunctional high-precision compound grinding machine with automatic tool changing function according to claim 1, characterized in that: The second power mechanism (6) further comprises: An inner diameter measuring instrument front and rear adjustment mounting plate (601), the inner diameter measuring instrument front and rear adjustment mounting plate (601) is mounted on the outside of the inner diameter measuring instrument bracket (16), and the inner diameter measuring instrument body (602) is mounted on the outside of the inner diameter measuring instrument front and rear adjustment mounting plate (601); An internal diameter measuring instrument measuring claw (603), the internal diameter measuring instrument measuring claw (603) being mounted on the outside of the internal diameter measuring instrument front and rear adjustment mounting plate (601); A grinding head cover (608), the grinding head cover (608) being arranged above the mounting frame (19), and a grinding head seat (614) being arranged inside the grinding head cover (608); A tool-changing electric spindle (615) is arranged inside the grinding head seat (614).

5. The multifunctional high-precision compound grinding machine with automatic tool changing function according to claim 4, characterized in that: The second power mechanism (6) further comprises: An X-axis rear accordion cover bracket (606), wherein the X-axis rear accordion cover bracket (606) is arranged on the top of the mounting frame (19); An X-axis screw feed assembly (605), wherein the X-axis screw feed assembly (605) is arranged inside the mounting frame (19); A cross-connecting slide plate (607), wherein the cross-connecting slide plate (607) is connected to the output end of the X-axis screw feed assembly (605), and the cross-connecting slide plate (607) is connected to the grinding head cover (608); An X-axis linear guide rail (604), wherein the X-axis linear guide rail (604) is arranged inside the mounting frame (19), and the cross-connecting slide plate (607) is slidably connected inside the X-axis linear guide rail (604); An end face measuring instrument assembly (609), the end face measuring instrument assembly (609) being mounted on the top of the grinding head cover (608), the end face measuring instrument assembly (609) being connected to the end face measuring instrument probe (610); An X-axis front accordion cover (611), wherein the X-axis front accordion cover (611) is mounted on the top of the mounting frame (19); A Z-axis rear accordion cover bracket (613), wherein the Z-axis rear accordion cover bracket (613) is mounted on the top of the mounting frame (19); A Z-axis rear accordion cover (612) is installed above the mounting frame (19), and the Z-axis rear accordion cover (612) is connected to a Z-axis rear accordion cover bracket (613).

6. The multifunctional high-precision compound grinding machine with automatic tool changing function according to claim 5, characterized in that: The X-axis screw feed assembly (605) includes: A motor base (6051), the motor base (6051) being mounted inside the mounting frame (19), and an angular contact bearing (6053), a coupling (6052), and a servo motor (6054) being provided outside the motor base (6051); A ball screw (6055), the ball screw (6055) is connected to the motor base (6051), and a combined bearing (6058) and a front support (6059) are provided on the outside of the ball screw (6055); A nut seat (6056) is provided on the outside of the ball screw (6055), and a ball nut (6057) is provided inside the nut seat (6056).

Images