A heavy machine tool tool holder

Abstract

The present invention belongs to the technical field of machine tool tool rests, and in particular, relates to a heavy-duty machine tool tool rest, including a main tool rest, two first drive assemblies, and two second drive assemblies, wherein the main tool rest is used to install a tool, the two first drive assemblies are used to respectively drive two auxiliary tool rests to perform lateral adjustment toward a workpiece, and the two second drive assemblies are used to drive the two first drive assemblies to establish a connection with the corresponding auxiliary tool rests. The first clamping strip and the second clamping strip for limiting the auxiliary tool rest installed at the first slide slot notch for installing the auxiliary tool rest on the main tool rest of the present invention can be damaged when the tool is hit on the fixture assembly, thereby forming an effective buffer for the impact on the tool and protecting the tool from damage.

Description

Technical Field

[0001] The invention belongs to the technical field of machine tool tool rests, and in particular relates to a heavy-duty machine tool tool rest. Background Art

[0002] The tool holder of a heavy-duty machine tool is an important component of the machine tool and is used to fix and replace cutting tools. The frame tool holder is used for coarse and fine processing of various shaft parts, especially for strong cutting (rough processing) and processing of stepped shafts, deep grooves, and end faces.

[0003] The current machine tool tool holder needs to manually adjust the tool height, tool extension, and tool horizontal or vertical angle when clamping the tool. There are many adjustment points, which requires high experience of workers and is difficult to achieve rapid installation of the tool. With the development of intelligence, tool clamping can also simplify the tool adjustment process through intelligence. The patent with application number 201410605261.6 designs a tool holder that can adjust the tool height, but it is necessary to rotate the tightening bolt to adjust the tool height, which is not conducive to the intelligent adjustment of the tool height. The patent with application number 202323248704.4 discloses a support member and a clamping member that can move independently relative to the same column. The height of the prop can be adjusted by rotating motion, but the tool clamping force will be reduced during the adjustment process. After the tool height adjustment is completed, the re-clamping operation of the tool is not easy to achieve intelligentization.

[0004] The tool of a machine tool generally has lateral movement close to the workpiece. The lateral movement of the tool is completed by a manual wheel, but the wheel adjustment is generally high-precision adjustment, which requires many turns to adjust it into place, which is time-consuming, labor-intensive and inefficient. If the pitch of the adjustment screw is increased to improve the adjustment efficiency, the adjustment accuracy will be reduced, and the processing requirements cannot be effectively met. In the case of a motor-driven tool for rapid lateral movement, when the tool holder is installed on the track that makes it move laterally, the screw needs to be installed in the screw hole on the tool holder. This process requires rotating the screw many times, and the installation is time-consuming and labor-intensive.

[0005] It is common for cutting tools to collide during movement, which may damage the workpiece or the cutting tool. Patent application number 202210663293.6 discloses an anti-collision tool holder, which adds a buffer shell to the outside of the tool holder, making the entire tool holder larger in size. In particular, it will increase the size of the tool holder when used on heavy machine tools, which is not suitable for heavy machine tools.

[0006] The present invention designs a heavy-duty machine tool tool rest to solve the above problems. Summary of the invention

[0007] Based on this, it is necessary to provide a heavy-duty machine tool tool rest in view of the problems existing in the current machine tool tool rest. The present invention drives the first screw in the first drive assembly to cooperate with the thread groove of the slider on the auxiliary tool rest through the second drive assembly on the main tool rest, so as to realize the quick connection and installation of the first screw in the first drive assembly and the slider on the auxiliary tool rest, effectively improve the installation and connection efficiency of the first screw in the first drive assembly and the auxiliary tool rest where the tool is located, and at the same time, ensure the lateral adjustment accuracy of the tool by the first screw. The present invention adjusts the tool on the auxiliary tool rest by electric or manual lateral movement through the first drive assembly installed on the main tool rest. The electric drive can effectively improve the lateral movement efficiency of the tool close to the workpiece, which is conducive to the intelligent lateral adjustment of the tool. After the clamping assembly in the present invention completes the clamping and fixing of the tool, the tool can be height-adjusted while keeping the four clamps continuously clamping the tool, ensuring that the clamping force of the tool remains unchanged during the height adjustment process without the need to repeatedly clamp the tool, effectively improving the clamping efficiency during the tool height adjustment process. The first clamping strip and the second clamping strip for limiting the auxiliary tool holder installed at the first slide groove notch for installing the auxiliary tool holder on the main tool holder of the present invention can be damaged when the tool on the fixture assembly is hit, thereby effectively buffering the impact on the tool and protecting the tool from damage.

[0008] The above purpose is achieved through the following technical solutions:

[0009] A heavy-duty machine tool tool rest, used for mounting a tool, comprising:

[0010] The main tool rest installed on the machine tool is used to install the tool. Two auxiliary tool rests are horizontally slidable along the radial direction of the machine tool spindle in the first sliding grooves on both sides of the main tool rest. A clamping assembly is arranged at one end of the auxiliary tool rest. The clamping assembly includes a tool holder arranged on the auxiliary tool rest. The side wall of the tool holder is provided with a second mounting groove for installing the tool. Two second screw sleeves are rotatably arranged on the top and bottom of the second mounting groove. A third screw sleeve is installed with an inner thread of the second screw sleeve. A third hand wheel is arranged at one end of the third screw sleeve. A rotating sleeve is rotatably arranged on the other end of the third screw sleeve. A round pin is arranged at the end of the rotating sleeve. A splint cooperating with the tool is hinged on the round pin. A pressure sensor is arranged on the splint. A locking stud is installed with the inner thread of the third screw sleeve. The end of the locking stud is frictionally matched with the locking groove at the bottom of the rotating sleeve. A third driving assembly is arranged on the tool holder, which synchronously drives the four second screw sleeves to rotate at the same speed and can self-lock the four second screw sleeves.

[0011] The two first drive assemblies are used to respectively drive the two auxiliary tool rests to perform lateral adjustments toward the workpiece.

[0012] The two second drive assemblies are used to drive the two first drive assemblies to establish connection with the corresponding auxiliary tool holders.

[0013] In one of the embodiments, a plurality of accommodating grooves are provided on both sides of the main tool holder, the bottom of the accommodating grooves are connected to the machine tool by bolts, and two first mounting grooves are provided on the upper and lower sides of the groove opening of the first slide groove, a first clamping strip is installed in the upper first mounting groove by bolts, and the third inclined surface on the first clamping strip cooperates with the first inclined surface on the upper side of the corresponding auxiliary tool holder, and a second clamping strip is installed in the lower first mounting groove by bolts, and the fourth inclined surface on the second clamping strip cooperates with the second inclined surface on the lower side of the corresponding auxiliary tool holder, and a breaking groove is provided on the second clamping strip to facilitate its force destruction.

[0014] In one embodiment, the first drive assembly includes a U-shaped seat, which slides in a second slide groove of the corresponding first slide groove side wall along the axis direction of the lathe spindle. A horizontal first screw rod is rotatably provided on two branches of the U-shaped seat, which is perpendicular to the lathe spindle and is rotated by a first motor or manual drive. The first screw rod cooperates with a semicircular thread groove on a slider fixed to the corresponding secondary tool holder.

[0015] In one of the embodiments, two branches of the U-shaped seat are respectively mounted with a first card cover by bolts, and a circular hole rotatably matched with the first screw rod is formed between the first card cover and the corresponding branch of the U-shaped seat.

[0016] In one of the embodiments, a first gear is provided on the end step of the first screw rod driven to rotate by the first motor through a first nut, and the first gear is meshed with a second gear on the output shaft of the first motor. The first motor is provided on a bracket fixed to the U-shaped seat, and the bracket and the first gear end of the first screw rod move in a movable groove on the side wall of the main tool holder.

[0017] In one of the embodiments, a first hand wheel is mounted on the end step of the first screw rod which is driven to rotate manually via a first nut.

[0018] In one embodiment, the second drive assembly includes two horizontal second screws perpendicular to the first screw, the two second screws are rotatably disposed in the main tool holder and are respectively threadedly connected to the two first screw sleeves on the two ends of the corresponding U-shaped seat, the two second screws are each provided with a third gear, the two third gears are respectively meshed with two fourth gears, the two fourth gears are provided on the first rotating shaft, the first rotating shaft is rotatably disposed in the main tool holder, the first rotating shaft is provided with a fifth gear, the fifth gear is meshed with a sixth gear, the sixth gear is provided on the second rotating shaft, the second rotating shaft is rotatably disposed in a circular groove on the main tool holder, and a second hand wheel is provided on the second rotating shaft.

[0019] In one of the embodiments, second card covers are provided on both upper and lower sides of the second mounting groove of the tool holder by bolts, two circular holes rotatably matched with two corresponding second screw sleeves are formed between the second card covers and the tool holder, and two sealing rings are matched between the second screw sleeves and the corresponding circular holes.

[0020] In one embodiment, the third driving assembly includes two vertical third rotating shafts driven to rotate synchronously and at a constant speed by a second motor. The two third rotating shafts are respectively rotatably arranged in two vertically penetrating axial holes on the tool holder. Two eighth gears that mesh with the seventh gears on the two second screw sleeves on the corresponding sides are arranged on the steps at both ends of the third rotating shaft through second nuts. The eighth gear is located in the gear groove at the end of the axial hole. A first pressure cover for positioning the third rotating shaft is installed at the notch of the gear groove through bolts. A first bearing is matched between the first pressure cover and the steps at the corresponding ends of the third rotating shaft.

[0021] In one embodiment, a fourth rotating shaft is rotatably arranged on the tool holder through the first rotating seat, a worm wheel and two tenth gears are arranged on the fourth rotating shaft, the two tenth gears are respectively meshed with the ninth gears on the two third rotating shafts, the ninth gear is arranged on the end step of the corresponding third rotating shaft through a third nut, a worm meshed with the worm wheel is rotatably arranged on the tool holder through the second rotating seat, a second pressure cover for limiting the worm is provided at the end of the second rotating seat through bolts, a second bearing is matched between the second pressure cover and the second rotating seat, an eleventh gear is arranged on the worm, the eleventh gear is meshed with the twelve gear on the output shaft of the second motor, and the second motor is fixed to the tool holder by bolts.

[0022] The beneficial effects of the present invention are:

[0023] 1. The present invention drives the first screw in the first drive assembly to cooperate with the thread groove of the slider on the auxiliary tool holder through the second drive assembly on the main tool holder, thereby realizing the rapid connection and installation of the first screw in the first drive assembly and the slider on the auxiliary tool holder, effectively improving the installation and connection efficiency of the first screw in the first drive assembly and the auxiliary tool holder where the tool is located, and at the same time, ensuring the lateral adjustment accuracy of the first screw on the tool.

[0024] 2. The present invention uses a first drive assembly installed on the main tool holder to perform electric or manual lateral movement adjustment on the tool on the auxiliary tool holder. The electric drive can effectively improve the lateral movement efficiency of the tool close to the workpiece, which is conducive to realizing the intelligent lateral adjustment of the tool.

[0025] 3. After the clamping and fixing of the tool is completed, the clamping assembly in the present invention can adjust the height of the tool while keeping the four clamps continuously clamping the tool, ensuring that the clamping force of the tool remains unchanged during the height adjustment process without the need to repeatedly clamp the tool, effectively improving the clamping efficiency during the tool height adjustment process.

[0026] 4. The first clamping strip and the second clamping strip for limiting the auxiliary tool holder installed at the first slide groove notch for installing the auxiliary tool holder on the main tool holder of the present invention can be damaged when the tool on the fixture assembly is hit, thereby effectively buffering the impact on the tool and protecting the tool from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an overall schematic diagram of the present invention;

[0028] Figure 2 is a schematic diagram of the distribution of the first driving component of the present invention;

[0029] Figure 3 is a cross-sectional view of the electric first drive assembly of the present invention;

[0030] Figure 4 is a cross-sectional view of a manual first drive assembly of the present invention;

[0031] Figure 5 is a top sectional view of a second drive assembly of the present invention;

[0032] Figure 6 is a cross-sectional view of a second drive assembly of the present invention;

[0033] Figure 7 It is a cross-sectional view of the structure on the second rotating shaft in the second driving assembly of the present invention;

[0034] Figure 8 It is the schematic diagram of the main tool holder;

[0035] Fig. 9 It is a schematic diagram of the structure of the first card strip and the second opening strip;

[0036] Fig.10 is a schematic diagram of a first drive assembly;

[0037] Fig.11 Schematic diagram of the auxiliary tool rest structure;

[0038] Fig.12 is a schematic diagram of the fixture assembly;

[0039] Fig.13 It is a cross-sectional view of the cooperation between the four clamping plates and the cutting tool in the fixture assembly;

[0040] Fig.14It is a cross-sectional view of the synchronous rotation structure of the second screw sleeve corresponding to the upper and lower clamping plates of the clamp assembly;

[0041] Fig.15 It is a cross-sectional view of the synchronously rotating structure of two third rotating shafts in the fixture assembly;

[0042] Fig.16 It is a cross-sectional view of the worm installation structure in the fixture assembly;

[0043] Fig.17 It is a schematic diagram of the knife holder;

[0044] Fig.18 It is a sectional view of the tool holder;

[0045] Fig.19 is a schematic diagram of the second card cover;

[0046] Fig. 20 It is a cross-sectional view of the cooperation between the third screw sleeve and the rotating sleeve in the fixture assembly;

[0047] Fig.21 is a schematic diagram of a clamp in a fixture assembly;

[0048] Fig. 22 Schematic diagram of two states of the first clamping bar and the second clamping bar after the tool is hit;

[0049] Fig.23 It is a schematic diagram of two clamping states of the tool in the vertical direction of the fixture assembly;

[0050] Fig.24 It is a schematic diagram of two clamping states of the tool by the fixture assembly in the horizontal direction;

[0051] Name of the label in the figure:

[0052] 101, main tool rest; 102, receiving groove; 103, first slide groove; 104, second slide groove; 105, first mounting groove; 106, movable groove; 107, auxiliary tool rest; 108, first inclined plane; 109, second inclined plane; 110, slider; 111, thread groove; 112, first clamping strip; 113, third inclined plane; 114, second clamping strip; 115, fourth inclined plane; 116, breaking groove; 117, machine tool; 118, tool;

[0053] 200, first drive assembly; 201, U-shaped seat; 202, first card cover; 203, first screw; 204, first gear; 205, first nut; 206, second gear; 207, first motor; 208, bracket; 209, first screw sleeve; 210, first hand wheel;

[0054] 300, second driving assembly; 301, second screw; 302, third gear; 303, fourth gear; 304, first rotating shaft; 305, fifth gear; 306, sixth gear; 307, second rotating shaft; 308, second hand wheel;

[0055] 400, fixture assembly; 401, knife seat; 402, second mounting groove; 403, shaft hole; 404, gear groove; 405, second card cover; 406, second screw sleeve; 407, sealing ring; 408, seventh gear; 409, eighth gear; 410, third rotating shaft; 411, second nut; 412, first bearing; 413, first gland; 414, ninth gear; 415, third nut; 416, tenth gear; 41 7. Fourth rotating shaft; 418. First rotating seat; 419. Worm wheel; 420. Worm; 421. Second rotating seat; 422. Second bearing; 423. Second pressure cover; 424. Eleventh gear; 425. Twelve gear; 426. Second motor; 427. Third screw sleeve; 428. Rotating sleeve; 429. Locking groove; 430. Round pin; 431. Clamp; 433. Locking stud; 434. Third hand wheel; 435. Third driving assembly. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0057] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0058] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0059] like Figure 1-Figure 21 As shown, a heavy machine tool 117 tool holder is used to install a tool 118, including:

[0060] A main tool rest 101 installed on a machine tool 117 is used to install a tool 118. Two auxiliary tool rests 107 are horizontally slidable along the radial direction of the main axis of the machine tool 117 in the first slide grooves 103 on both sides of the main tool rest 101. A fixture assembly 400 is provided at one end of the auxiliary tool rest 107. The fixture assembly 400 includes a tool holder 401 provided on the auxiliary tool rest 107. A second installation groove 402 for installing the tool 118 is provided on the side wall of the tool holder 401. Two second screw sleeves 406 are rotatably provided on the top and bottom of the second installation groove 402, respectively. A third screw sleeve 427 is installed on the inner thread of the second screw sleeve 406. The third screw sleeve A third hand wheel 434 is provided at one end of 427, and a rotating sleeve 428 is rotatably provided at the other end of the third screw sleeve 427. A round pin 430 is provided at the end of the rotating sleeve 428. A clamping plate 431 cooperating with the tool 118 is hinged on the round pin 430, and a pressure sensor is provided on the clamping plate 431. A locking stud 433 is installed on the internal thread of the third screw sleeve 427, and the end of the locking stud 433 is frictionally matched with the locking groove 429 at the bottom of the corresponding rotating sleeve 428. The tool holder 401 is provided with a third driving component 435 which synchronously drives the four second screw sleeves 406 to rotate at the same speed and can self-lock the four second screw sleeves 406.

[0061] The two first driving assemblies 200 are used to respectively drive the two auxiliary tool rests 107 to perform lateral adjustments toward the workpiece.

[0062] The two second driving assemblies 300 are used to drive the two first driving assemblies 200 to establish connection with the corresponding auxiliary tool holders 107 .

[0063] In a further embodiment, Figure 7 , Figure 8 , Fig. 9As shown, a plurality of accommodating grooves 102 are provided on both sides of the main tool holder 101, and the bottom of the accommodating groove 102 is connected to the machine tool 117 by bolts. Two first installation grooves 105 are provided on the upper and lower sides of the notch of the first slide groove 103. A first clamping strip 112 is installed in the first installation groove 105 on the upper side by bolts, and the third inclined surface 113 on the first clamping strip 112 cooperates with the first inclined surface 108 on the upper side of the corresponding auxiliary tool holder 107. A second clamping strip 114 is installed in the first installation groove 105 on the lower side by bolts, and the fourth inclined surface 115 on the second clamping strip 114 cooperates with the second inclined surface 109 on the lower side of the corresponding auxiliary tool holder 107. The second clamping strip 114 is provided with a breaking groove 116 for facilitating its force destruction.

[0064] In a further embodiment, Figure 3 , Figure 4 , Fig.10 , Fig.11 As shown, the first driving assembly 200 includes a U-shaped seat 201, which slides in the second slide groove 104 on the side wall of the corresponding first slide groove 103 along the axis direction of the lathe spindle. A horizontal first screw 203 is rotatably provided on the two branches of the U-shaped seat 201, which is perpendicular to the lathe spindle and is rotated by a first motor 207 or manually driven. The first screw 203 cooperates with a semicircular thread groove 111 on a slider 110 fixed to the corresponding secondary tool holder 107.

[0065] In a further embodiment, Fig.10 As shown, the two branches of the U-shaped seat 201 are respectively installed with a first card cover 202 by bolts, and a circular hole rotatably matched with the first screw rod 203 is formed between the first card cover 202 and the corresponding branch of the U-shaped seat 201.

[0066] In a further embodiment, Figure 3 , Figure 8 As shown, a first gear 204 is provided on the end step of the first screw rod 203 driven to rotate by the first motor 207 through a first nut 205, and the first gear 204 is meshed with a second gear 206 on the output shaft of the first motor 207. The first motor 207 is provided on a bracket 208 fixedly connected to the U-shaped seat 201, and the bracket 208 and the first gear 204 end of the first screw rod 203 move in the movable groove 106 on the side wall of the main tool holder 101.

[0067] In a further embodiment, Figure 4 As shown, a first hand wheel 210 is installed on the end step of the first screw rod 203 which is manually driven to rotate via a first nut 205 .

[0068] In a further embodiment, Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 As shown, the second driving assembly 300 includes two horizontal second screws 301 perpendicular to the first screw 203, the two second screws 301 are rotatably set in the main tool holder 101 and are respectively threadedly connected with the two first screw sleeves 209 on the two ends of the corresponding U-shaped seat 201, the two second screws 301 are each provided with a third gear 302, the two third gears 302 are respectively meshed with two fourth gears 303, the two fourth gears 303 are arranged on the first rotating shaft 304, the first rotating shaft 304 is rotatably set in the main tool holder 101, the first rotating shaft 304 is provided with a fifth gear 305, the fifth gear 305 is meshed with a sixth gear 306, the sixth gear 306 is arranged on the second rotating shaft 307, the second rotating shaft 307 is rotatably set in the circular groove on the main tool holder 101, and the second rotating shaft 307 is provided with a second hand wheel 308.

[0069] In a further embodiment, Fig.13 , Fig.14 , Fig.17 , Fig.18 , Fig.19 As shown, the second mounting groove 402 of the tool holder 401 is provided with a second cover 405 on both sides thereof by bolts, and two circular holes rotatably matched with two corresponding second screw sleeves 406 are formed between the second cover 405 and the tool holder 401, and two sealing rings 407 are matched between the second screw sleeves 406 and the corresponding circular holes.

[0070] In a further embodiment, Fig.13 , Fig.14 , Fig.15 , Fig.16 As shown, the third driving assembly 435 includes two vertical third rotating shafts 410 which are driven to rotate synchronously and at a constant speed by the second motor 426. The two third rotating shafts 410 are respectively rotatably arranged in two vertically penetrating axial holes 403 on the tool holder 401. Two eighth gears 409 which mesh with the seventh gears 408 on the two second screw sleeves 406 on the corresponding sides are arranged on the steps at both ends of the third rotating shaft 410 through second nuts 411. The eighth gear 409 is located in the gear groove 404 at the end of the axial hole 403. A first pressure cover 413 for positioning the third rotating shaft 410 is installed at the notch of the gear groove 404 by bolts. A first bearing 412 is matched between the first pressure cover 413 and the steps at the corresponding ends of the third rotating shaft 410.

[0071] In a further embodiment, Fig.13 , Fig.14 , Fig.15 , Fig.16As shown, a fourth rotating shaft 417 is rotatably provided on the tool holder 401 through a first rotating seat 418, a worm wheel 419 and two tenth gears 416 are provided on the fourth rotating shaft 417, the two tenth gears 416 are respectively meshed with the ninth gears 414 on the two third rotating shafts 410, the ninth gear 414 is provided on the end step of the corresponding third rotating shaft 410 through a third nut 415, a worm 420 meshed with the worm wheel 419 is rotatably provided on the tool holder 401 through a second rotating seat 421, a second pressure cover 423 for limiting the worm 420 is provided at the end of the second rotating seat 421 through bolts, a second bearing 422 is matched between the second pressure cover 423 and the second rotating seat 421, an eleventh gear 424 is provided on the worm 420, the eleventh gear 424 is meshed with the twelve gear 425 on the output shaft of the second motor 426, and the second motor 426 is fixed to the tool holder 401 through bolts.

[0072] The present invention drives the first screw 203 in the first drive assembly 200 to cooperate with the thread groove 111 of the slider 110 on the auxiliary tool rest 107 through the second drive assembly 300 on the main tool rest 101, thereby realizing the quick connection and installation of the first screw 203 in the first drive assembly 200 and the slider 110 on the auxiliary tool rest 107, effectively improving the installation and connection efficiency of the first screw 203 in the first drive assembly 200 and the auxiliary tool rest 107 where the tool 118 is located, and at the same time, ensuring the lateral adjustment accuracy of the tool 118 by the first screw 203. The present invention performs electric or manual lateral movement adjustment on the tool 118 on the auxiliary tool rest 107 through the first drive assembly 200 installed on the main tool rest 101, and the electric drive can effectively improve the lateral movement efficiency of the tool 118 close to the workpiece, which is conducive to realizing the intelligent lateral adjustment of the tool 118. After the clamping and fixing of the tool 118 is completed, the clamping assembly 400 of the present invention can adjust the height of the tool 118 while maintaining the four clamping plates 431 to continuously clamp the tool 118, ensuring that the clamping force of the tool 118 remains unchanged during the height adjustment process without the need to repeatedly clamp the tool 118, effectively improving the clamping efficiency during the height adjustment process of the tool 118. The first clamping strip 112 and the second clamping strip 114 for limiting the auxiliary tool holder 107 installed at the notch of the first slide groove 103 for installing the auxiliary tool holder 107 on the main tool holder 101 of the present invention can be damaged when the tool 118 is hit on the clamping assembly 400, thereby effectively buffering the impact on the tool 118 and protecting the tool 118 from damage.

[0073] The operation process of the present invention is as follows:

[0074] In the initial state, the auxiliary tool holder 107 is not installed on the main tool holder 101, and the tool 118 is installed in the fixture assembly 400 at the end of the auxiliary tool holder 107. The worm gear 419 and worm 420 in the fixture assembly 400 are in a self-locking state with respect to the four second screw sleeves 406, and each locking stud 433 is inserted into the locking groove 429 at the bottom of the corresponding rotating sleeve 428 and is in a locking state with respect to the corresponding third screw sleeve 427 and the rotating sleeve 428.

[0075] When installing the auxiliary tool holder 107 in the first slide groove 103 of the main tool holder 101, first rotate the second hand wheel 308, the second hand wheel 308 drives the corresponding two fourth gears 303 to rotate synchronously and at the same speed through the second rotating shaft 307, the sixth gear 306, the fifth gear 305, and the first rotating shaft 304, and the two fourth gears 303 drive the U-shaped seat 201 of the corresponding first driving assembly 200 to move deeper into the corresponding second slide groove 104 through the corresponding third gear 302, the second screw rod 301 and the first screw sleeve 209, and the U-shaped seat 201 drives the corresponding first screw rod 203 to move synchronously to ensure that the first screw rod 203 will not be in contact with the thread groove 111 on the slider 110 of the corresponding auxiliary tool holder 107 Meshing or mutual interference, then, the auxiliary tool holder 107 is installed in the first slide groove 103 and the slider 110 on the auxiliary tool holder 107 is inserted into the corresponding second slide groove 104, and then, the first clamping strip 112 and the second clamping strip 114 are respectively installed by bolts in the two first installation grooves 105 at the notch of the first slide groove 103, so that the third inclined surface 113 on the first clamping strip 112 and the fourth inclined surface 115 on the second clamping strip 114 are respectively pressed against the first inclined surface 108 and the second inclined surface 109 on the upper and lower sides of the auxiliary tool holder 107 and form a guide limit for the auxiliary tool holder 107, and the threaded groove 111 of the slider 110 on the auxiliary tool holder 107 is separated from the first screw 203 of the corresponding first drive assembly 200.

[0076] Next, rotate the second hand wheel 308 in the opposite direction, and the second hand wheel 308 drives the corresponding two fourth gears 303 to rotate synchronously and at the same speed in the opposite direction through the second rotating shaft 307, the sixth gear 306, the fifth gear 305, and the first rotating shaft 304. The two fourth gears 303 drive the U-shaped seat 201 of the corresponding first driving assembly 200 to move toward the outside of the corresponding second sliding groove 104 through the corresponding third gear 302, the second screw 301 and the first screw sleeve 209 respectively. The U-shaped seat 201 drives the corresponding first screw 203 to move synchronously, so that the first screw 203 radially enters the thread groove 111 of the sliding block 110 on the auxiliary tool holder 107 and engages with the thread groove 111.

[0077] Then, rotate the third hand wheels 434 on the four third screw sleeves 427, and the four third hand wheels 434 respectively drive the corresponding third screw sleeves 427 to rotate. The third screw sleeve 427 moves vertically to a certain extent under the action of the corresponding second screw sleeve 406. Then, use a hexagonal wrench to loosen the four locking studs 433 respectively and unlock the four third screw sleeves 427 and the corresponding rotating sleeves 428. Rotate the rotating sleeve 428 to adjust the position of the clamp 431 so that the axis of the round pin 430 on the rotating sleeve 428 is parallel to the spindle axis of the machine tool 117.

[0078] like Fig.23 As shown, the tool 118 is placed in the second mounting groove 402 of the tool holder 401 so that the tool 118 is located between the four clamping plates 431. The state of the tool 118 after clamping and fixing is determined to be a tilted state in the vertical direction or a horizontal state perpendicular to the spindle of the machine tool 117 according to the processing angle requirement of the tool 118 and the workpiece. The four third hand wheels 434 are rotated to adjust the heights of the four clamping plates 431 so that the four clamping plates 431 form a tilted state or a horizontal state in the vertical direction for the tool 118 and form a pre-tightened clamp for the tool 118. The four clamping plates 431 have the same tilt angle or are all in a horizontal state because they are hinged to the round pins 430 at the ends of the corresponding rotating sleeves 428.

[0079] Then, four locking studs 433 are inserted into the locking grooves 429 on the corresponding rotating sleeves 428 by using a hexagonal wrench, and the four rotating sleeves 428 are locked with the corresponding third screw sleeves 427. Then, the first screw 203 in the first driving assembly is driven to rotate by the first motor 207 or manually. The first screw 203 drives the auxiliary tool holder 107 to move laterally toward the workpiece through the slider 110 threadedly connected thereto, and the auxiliary tool holder 107 drives the tool 118 on the corresponding fixture assembly 400 to move laterally toward the workpiece synchronously. When the lateral movement of the tool 118 reaches the requirement, the driving of the first screw 203 to rotate is stopped. Then, the second motor 426 in the third driving assembly 435 is started. The second motor 426 drives the twelfth gear 425, the eleventh gear 424, the worm 420, the worm wheel 419, the fourth rotating shaft 4 17. The two tenth gears 416 and the two ninth gears 414 drive the two third rotating shafts 410 to rotate synchronously at a constant speed. The two third rotating shafts 410 drive the four second screw sleeves 406 to rotate synchronously at a constant speed through the corresponding two eighth gears 409 and the two seventh gears 408 respectively. Since the four clamping plates 431 are in a clamping state for the tool 118, the four third screw sleeves 427 remain non-rotating. The four second screw sleeves 406 drive the four third screw sleeves 427 to move in the same direction and at a constant speed in the vertical direction. The four third screw sleeves 427 drive the tool 118 to adjust its height through the clamping plates 431 on the rotating sleeve 428 locked therewith and keep the four clamping plates 431 clamping the tool 118 and the state of the tool 118 itself does not change, and there is no need to re-clamp the tool 118 after adjusting its height.

[0080] like Fig.24 As shown, the tool 118 is placed in the second mounting groove 402 of the tool holder 401 so that the tool 118 is located between the four clamping plates 431. The state of the tool 118 after clamping and fixing is determined to be a tilted state in the horizontal direction or a horizontal state perpendicular to the spindle of the machine tool 117 according to the processing angle requirement between the tool 118 and the workpiece. The four third hand wheels 434 are rotated to adjust the heights of the four clamping plates 431 so that the four clamping plates 431 form a tilted state or a horizontal state in the vertical direction for the tool 118 and form a pre-tightened clamp for the tool 118. The four clamping plates 431 are in a horizontal state because they are hinged to the round pins 430 at the ends of the corresponding rotating sleeves 428.

[0081] Then, four locking studs 433 are inserted into the locking grooves 429 on the corresponding rotating sleeves 428 by using a hexagonal wrench, and the four rotating sleeves 428 are locked with the corresponding third screw sleeves 427. Then, the first screw 203 in the first driving assembly is driven to rotate by the first motor 207 or manually. The first screw 203 drives the auxiliary tool holder 107 to move laterally toward the workpiece through the slider 110 threadedly connected thereto, and the auxiliary tool holder 107 drives the tool 118 on the corresponding fixture assembly 400 to move laterally toward the workpiece synchronously. When the lateral movement of the tool 118 reaches the requirement, the driving of the first screw 203 to rotate is stopped. Then, the second motor 426 in the third driving assembly 435 is started. The second motor 426 drives the twelfth gear 425, the eleventh gear 424, the worm 420, the worm wheel 419, the fourth rotating shaft 4 17. The two tenth gears 416 and the two ninth gears 414 drive the two third rotating shafts 410 to rotate synchronously at a constant speed. The two third rotating shafts 410 drive the four second screw sleeves 406 to rotate synchronously at a constant speed through the corresponding two eighth gears 409 and the two seventh gears 408 respectively. Since the four clamping plates 431 are in a clamping state for the tool 118, the four third screw sleeves 427 remain non-rotating. The four second screw sleeves 406 drive the four third screw sleeves 427 to move in the same direction and at a constant speed in the vertical direction. The four third screw sleeves 427 drive the tool 118 to adjust its height through the clamping plates 431 on the rotating sleeve 428 locked therewith and keep the four clamping plates 431 clamping the tool 118 and the state of the tool 118 itself does not change, and there is no need to re-clamp the tool 118 after adjusting its height.

[0082] like Fig. 22As shown, when the tool 118 installed on the clamp assembly 400 collides with the workpiece during use, the tool 118 will drive the auxiliary tool holder 107 through the tool holder 401 to impact the first clamping strip 112 and the second clamping strip 114 on the upper and lower sides of the corresponding first slide groove 103, and the breaking groove 116 of the second clamping strip 114 will break under the impact, and the auxiliary tool holder 107 will fall off from the first slide groove 103. The auxiliary tool holder 107 drives the tool 118 to separate from the workpiece and effectively buffers the impact of the tool 118 on the workpiece, thereby protecting the tool 118 from damage due to the collision.

[0083] The pressure sensors on the four clamping plates 431 in the clamping assembly 400 can effectively monitor the clamping state of the tool 118. When the pressure sensor shows that the clamping force of the pressure plate on the tool 118 is reduced, first loosen the locking stud 433 to release its lock on the rotating sleeve 428 and the third screw sleeve 427, and then drive the third screw sleeve 427 to rotate by rotating the third hand wheel 434. The third screw sleeve 427 drives the pressure block to tighten the tool 118. After tightening, re-tighten the locking stud to lock the third screw sleeve 427 and the rotating sleeve 428.

[0084] In the process of starting the second motor 426 to adjust the height of the tool 118 in the present invention, a visual sensor is provided on the tool holder 401 to observe the relative height position of the tool 118 and the workpiece. When the relative height of the tool 118 and the workpiece reaches the requirement, the visual sensor transmits a signal to the system, and the system controls the second motor 426 to stop running.

Claims

1. A heavy-duty machine tool tool rest for mounting a tool, characterized in that: include: A main tool rest installed on a machine tool is used to install a tool, and two auxiliary tool rests are horizontally slidable along the radial direction of the machine tool spindle in first slide grooves on both sides of the main tool rest, and one end of the auxiliary tool rest is provided with a clamping assembly, and the clamping assembly includes a tool holder arranged on the auxiliary tool holder, and a side wall of the tool holder is provided with a second mounting groove for mounting the tool, and the top and bottom of the second mounting groove are respectively rotatably provided with two second screw sleeves, and the second screw sleeve internal thread is installed with a third screw sleeve, and one end of the third screw sleeve is provided with a third hand wheel, and the other end of the third screw sleeve is rotatably provided with a rotating sleeve, and a round pin is provided at the end of the rotating sleeve, and a clamping plate cooperating with the tool is hinged on the round pin, and a pressure sensor is provided on the clamping plate, and a locking stud is installed at the internal thread of the third screw sleeve, and the end of the locking stud is frictionally matched with the locking groove at the bottom of the rotating sleeve, and a third driving assembly is provided on the tool holder, which synchronously drives the four second screw sleeves to rotate at the same speed and can self-lock the four second screw sleeves; The four second screw sleeves drive the four third screw sleeves to move in the same direction and at a constant speed along the vertical direction; Two first drive assemblies, used to respectively drive the two auxiliary tool rests to perform lateral adjustment toward the workpiece; The two second drive assemblies are used to drive the two first drive assemblies to establish connection with the corresponding auxiliary tool holders.

2. A heavy machine tool tool rest according to claim 1, characterized in that: A plurality of accommodating grooves are provided on both sides of the main tool holder, and the bottom of the accommodating grooves is connected to the machine tool by bolts. Two first mounting grooves are provided on the upper and lower sides of the groove opening of the first slide groove. A first clamping strip is installed in the first mounting groove on the upper side by bolts, and the third inclined surface on the first clamping strip cooperates with the first inclined surface on the upper side of the corresponding auxiliary tool holder. A second clamping strip is installed in the first mounting groove on the lower side by bolts, and the fourth inclined surface on the second clamping strip cooperates with the second inclined surface on the lower side of the corresponding auxiliary tool holder. A breaking groove is provided on the second clamping strip to facilitate its force destruction.

3. A heavy machine tool tool rest according to claim 1, characterized in that: The first driving assembly includes a U-shaped seat, which slides in the second slide groove of the corresponding first slide groove side wall along the axis direction of the lathe spindle. A horizontal first screw rod is rotatably arranged on the two branches of the U-shaped seat, which is perpendicular to the lathe spindle and is rotated by a first motor or manual drive. The first screw rod cooperates with a semicircular thread groove on a slider fixed to the corresponding auxiliary tool holder.

4. A heavy machine tool tool rest according to claim 3, characterized in that: The two branches of the U-shaped seat are respectively mounted with a first clamping cover through bolts, and a circular hole rotatably matched with the first screw rod is formed between the first clamping cover and a corresponding branch of the U-shaped seat.

5. The heavy machine tool tool rest according to claim 3, characterized in that: A first gear is arranged on the end step of the first screw rod driven to rotate by the first motor through a first nut, and the first gear is meshed with the second gear on the output shaft of the first motor. The first motor is arranged on a bracket fixedly connected to the U-shaped seat, and the bracket and the first gear end of the first screw rod move in a movable groove on the side wall of the main tool holder.

6. A heavy machine tool tool rest according to claim 3, characterized in that: A first hand wheel is installed on the end step of the first screw rod which is driven to rotate manually via a first nut.

7. The heavy machine tool tool rest according to claim 3, characterized in that: The second driving assembly includes two horizontal second screws perpendicular to the first screw, the two second screws are rotatably arranged in the main tool holder and are respectively threadedly connected with the two first screw sleeves on the two ends of the corresponding U-shaped seat, the two second screws are respectively provided with a third gear, the two third gears are respectively meshed with two fourth gears, the two fourth gears are arranged on the first rotating shaft, the first rotating shaft is rotatably arranged in the main tool holder, the first rotating shaft is provided with a fifth gear, the fifth gear is meshed with the sixth gear, the sixth gear is arranged on the second rotating shaft, the second rotating shaft is rotatably arranged in a circular groove on the main tool holder, and the second rotating shaft is provided with a second hand wheel.

8. The heavy machine tool tool rest according to claim 1, characterized in that: The second mounting groove of the tool holder is provided with a second card cover on both upper and lower sides through bolts, and two circular holes which are rotatably matched with the corresponding two second screw sleeves are formed between the second card cover and the tool holder, and two sealing rings are matched between the second screw sleeves and the corresponding circular holes.

9. A heavy machine tool tool rest according to claim 8, characterized in that: The third driving assembly includes two vertical third rotating shafts driven to rotate synchronously and at a constant speed by the second motor. The two third rotating shafts are respectively rotatably set in two vertically penetrating axial holes on the tool holder. Two eighth gears that mesh with the seventh gears on the two second screw sleeves on the corresponding sides are arranged on the steps at both ends of the third rotating shaft through second nuts. The eighth gear is located in the gear groove at the end of the axial hole. A first pressure cover for positioning the third rotating shaft is installed at the notch of the gear groove through bolts. A first bearing is matched between the first pressure cover and the steps at the corresponding ends of the third rotating shaft.

10. A heavy machine tool tool rest according to claim 9, characterized in that: A fourth rotating shaft is rotatably arranged on the tool holder through the first rotating seat, a worm wheel and two tenth gears are arranged on the fourth rotating shaft, the two tenth gears are respectively meshed with the ninth gears on the two third rotating shafts, the ninth gear is arranged on the end steps of the corresponding third rotating shafts through the third nut, a worm meshed with the worm wheel is rotatably arranged on the tool holder through the second rotating seat, a second pressure cover for limiting the worm is provided at the end of the second rotating seat through bolts, a second bearing is matched between the second pressure cover and the second rotating seat, an eleventh gear is arranged on the worm, the eleventh gear is meshed with the twelve gears on the output shaft of the second motor, and the second motor is fixed to the tool holder by bolts.

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