Composite slewing bearing soft belt polishing machine tool

Abstract

The invention discloses a composite slewing bearing soft belt grinding machine tool, and belongs to the technical field of slewing bearing grinding. A composite slewing bearing soft belt grinding machine tool comprises a split rotary table which is horizontally placed on the ground, the split rotary table comprises a driving sliding table and two auxiliary power sliding tables, the split rotary table is arranged at the radial position of a machined workpiece, the three sliding tables are arranged at fixed angles, and the auxiliary power sliding tables are arranged on the driving sliding table. The base is used for placing, clamping and rotating a machined workpiece; the machine tool is mounted on the front side of the split rotary table; and the rotating mechanism is mounted in the moving tail end area of the machine tool. According to the scheme of the machine tool, the idea of multiple degrees of freedom of the robot is continued, the machining end is provided with an upper B shaft and an upper C shaft, more machining poses are expanded through five servo shafts, and multifunctional composite grinding is achieved. The rotary table is suitable for polishing and arranging soft belts of spherical raceways and three rows of cylindrical raceways (inner / outer rings). The split rotary table comprises a driving sliding table and two auxiliary power sliding tables, and the three sliding tables are arranged at a fixed angle; the machine tool is mounted on the front side of the split rotary table; and the rotating mechanism is mounted in the moving tail end area of the machine tool. The split rotary table is used for replacing a traditional large rotary table, the cost of a numerical control system is greatly reduced, the rigidity of equipment is improved on the basis of multi-degree-of-freedom machining, and machining is more stable.

Description

Technical Field

[0001] The invention relates to the technical field of bearing processing, and in particular to a composite slewing bearing soft belt grinding machine tool. Background Art

[0002] In large-scale rotating machinery such as shield machines, wind turbine turntables and other heavy equipment, slewing bearings are key components that provide support for the rotation of large mechanisms. Therefore, the surface hardness and wear resistance of the bearing raceway are required to be high. During the quenching process of the slewing bearing raceway, a quenching blind area will appear at the head and tail connection. The hardness of this blind area is relatively low, also known as the soft zone. When the steel ball roller rolls at high speed in the raceway, a large force will be generated, and the soft zone has a weak ability to resist the alternating load of rolling and will fail first. Therefore, the raceway soft zone needs to be polished to prevent the ball from contacting and being stressed in this area by means of clearance fit.

[0003] At present, the grinding of the soft belt of the bearing raceway is still mainly done by machine tool grinding or robot grinding. The grinding depth of the soft belt of the raceway is generally 0.2-0.5mm. The present invention solves the problem that the traditional three-axis machine tool can only perform linear motion in the three directions of X, Y, and Z, and cannot rotate the workpiece or tool, resulting in low grinding efficiency. When the machine tool processes complex curved surfaces, it is easy to cause poor surface quality due to the inability to find a suitable contact angle, requiring subsequent additional manual grinding or correction. At the same time, it solves the problem of insufficient rigidity of traditional five-axis robots during processing. Therefore, a composite slewing bearing soft belt grinding machine tool is proposed. Summary of the invention

[0004] The present invention provides a new type of soft belt grinding machine for slewing bearing raceways, which aims to solve the problem mentioned in the above background technology that when processing complex curved surfaces, the machine tool is prone to poor surface quality due to the inability to find a suitable contact angle. The machine tool solution continues the idea of ​​multiple degrees of freedom of the robot. The processing end is equipped with upper B and C axes, and 5 servo axes are used to expand more processing postures to achieve multi-functional composite grinding. The rigidity of the equipment is improved on the basis of multi-degree-of-freedom processing, making the processing more stable. It is suitable for soft belt grinding of spherical raceways and three-row cylindrical raceways (inner / outer rings). The split turntable is arranged to replace the traditional large turntable, which greatly reduces the cost of the CNC system.

[0005] The present invention provides a new type of slewing bearing raceway soft belt grinding machine, comprising:

[0006] A split turntable, the split turntable is horizontally placed on the ground, the split turntable includes a main power slide and two auxiliary power slides, and the three power slides are placed at a fixed angle;

[0007] A machine tool, wherein the machine tool is horizontally placed at the front end of the split rotary table;

[0008] By adopting the above technical solution, the linear rail and other parts are installed in a sunken manner in the rectangular groove;

[0009] The split rotary table includes an active slide and two auxiliary power slides. The rotary table is arranged in the radial position of the workpiece to be processed, and the three slides are arranged at a fixed angle;

[0010] The main power slide table is composed of a main power slide table base 113, a clamping and fixing table 115, a main rotating table 104, a third driving motor 116 and a second driving motor 114;

[0011] The auxiliary power slide is mainly composed of an auxiliary power slide base 112 , a first driving motor 109 and an auxiliary rotating table 107 .

[0012] The main power slide base 113 is provided with a main power slide guide rail 101; the main power slide guide rail 101 is provided with a main power rotating table 104 and a main power slide screw 105, one end of the main power slide screw 105 is provided with a second drive motor 114, the main power slide base 113 is provided with a clamping and fixing platform 115, the clamping and fixing platform 115 is provided with a third drive motor 116 and a hydraulic cylinder 103, and a downward pressure roller 117 is provided under the hydraulic cylinder 103.

[0013] The second driving motor 114 drives the main power slide screw 105 to move the clamping and fixing platform 115 and the main power slide rail 101 on the main power slide base 113 to move above the workpiece, and the third driving motor 116 drives the hydraulic cylinder 103 to drive the pressing roller 117 to clamp the workpiece, so that the workpiece is fixed on the main rotating platform 104.

[0014] An auxiliary power slide base 112 is provided with an auxiliary power slide guide rail 108, and the auxiliary power slide guide rail 108 is provided with the auxiliary rotating table 107 and the auxiliary power slide screw 110. One end of the auxiliary power slide screw 110 is provided with the first driving motor 109, and the other end is fixed with a limiting block 111. The first driving motor 109 drives the auxiliary power slide screw 110 to move so that the auxiliary rotating table 107 moves on the auxiliary power slide guide rail 108, which is used to tighten the workpiece fixed on the supporting roller.

[0015] The main rotating table 104 is composed of a motor reducer group 102 and rubber supporting rollers. The main rotating table 104 mainly supports and rotates the workpiece. The motor reducer group 102 drives the rollers of the main rotating table 104 to rotate and cooperates with the auxiliary rotating table 107 to rotate, thereby rotating the workpiece to the corresponding grinding area.

[0016] The machine tool 2 includes a machine tool base, a third linear rail is installed on the machine tool base, the machine tool base is fixed to the ground by anchor bolts, a third motor is installed on one side of the machine tool base, the output end of the third motor is connected to a third ball screw, a first fixed seat is arranged on the end of the third ball screw, a second screw nut is arranged on the third ball screw, the second nut seat cooperates with the second screw nut and is connected to the bottom of the machine tool bed, a third slider is installed at the bottom of the machine tool bed and is slidably connected to the third linear rail on the machine tool base through the third slider, a first linear rail is installed on the machine tool bed, a first motor is installed on the machine tool bed, and a first ball screw is installed on the output end of the first motor A second fixed seat is installed on the upper end of the first ball screw, a first screw nut is arranged on the first ball screw, the first screw nut cooperates with the first nut seat and is connected to the second drag plate, a first slider is installed on the second drag plate and is slidably connected to the first linear rail on the machine tool bed through the first slider, the second drag plate is connected to the third drag plate, a second motor is installed on the transverse drag plate, a second ball screw is installed on the output end of the second motor, a third fixed seat is installed on the upper end of the second ball screw, a third screw nut is arranged on the second ball screw, the third screw nut cooperates with the third nut seat and is connected to the first drag plate, and a rotating mechanism is installed under the first drag plate.

[0017] By adopting the above technical solution, under the action of the third motor and the third ball screw, the machine tool bed can move in the X direction, under the action of the first motor and the first ball screw, the first carriage can move in the Y direction, and under the action of the second motor and the second ball screw, the second carriage can move in the Z direction.

[0018] Furthermore, the axis direction of the electric spindle is perpendicular to the end face direction of the workpiece, the stroke of the machine tool in the X direction is set to 600mm to 750mm, the stroke of the machine tool in the Y direction is set to 250mm to 400mm, and the stroke of the machine tool in the Z direction is set to 750mm to 850mm.

[0019] By adopting the above technical solution, the rotating mechanism is installed and connected below the first carriage through the pulley cover therein.

[0020] Furthermore, a fourth motor is installed in the pulley cover, and a second pulley is connected to the output end of the fourth motor. The second pulley is connected to the first pulley through a transmission belt to form a belt drive connection, and the first pulley is connected to the rotating shaft connecting member through a pulley connecting member.

[0021] By adopting the above technical solution, the first pulley rotates around the B axis, and the output end of the first pulley is connected to the rotating shaft connecting member, and the rotation angle is 0° to 180°.

[0022] Furthermore, a fifth motor is installed on the rotating shaft connecting part, and the output ends of the fifth motor are respectively equipped with a turntable and an electric spindle connecting part. The output end of the fifth motor is connected to the 4.5-kW clamping seat through the electric spindle connecting part, and rotates around the C-axis through the motor output. The rotation angle is 0° to 180°. The 4.5-kW clamping seat is connected to its 4.5-kW clamping seat base plate and clamps the electric spindle. Grinding tools made of various materials can be installed on the electric spindle to meet different processing requirements.

[0023] The beneficial effects of the present invention are:

[0024] In the present invention, 5 servo axes are configured to combine multiple processing postures to achieve efficient and precise grinding of complex curved surfaces.

[0025] In the present invention, by installing a measuring head, the position of the grinding head can be automatically detected and accurately adjusted, which greatly improves the tool setting efficiency and reduces manual operation errors.

[0026] In the present invention, the rotation function of the B-axis and the C-axis enables the tool to contact the workpiece surface at an optimal angle, thereby reducing the offset during processing and the uneven distribution of grinding force. Especially when processing complex curved surfaces, multi-axis linkage can achieve a smooth grinding path.

[0027] In the present invention, the three axes X, Y and Z of the machine tool are linked with the axes B and C to interpolate to realize the arc trajectory, and the regional raceway grinding is suitable for grinding spherical raceways and cylindrical raceways.

[0028] In the present invention, the grinding head can be positioned to a suitable processing angle more quickly by rotating the B-axis and the C-axis without re-clamping the workpiece. This flexibility reduces the number of re-clamping of the workpiece, thereby improving the overall processing efficiency.

[0029] In the present invention, a split turntable is used to replace a traditional large turntable, which greatly reduces the processing cost.

[0030] In the present invention, the multi-degree-of-freedom concept of the robot is continued, and a three-axis machine tool is used in linkage with the B and C axes, thereby improving the rigidity of the equipment while ensuring the multi-degree-of-freedom.

[0031] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 This is one of the structural schematic diagrams of the split turntable of the present invention;

[0035] Figure 3 This is the second schematic diagram of the split turntable structure of the present invention;

[0036] Figure 4 It is one of the schematic diagrams of the machine tool structure of the present invention;

[0037] Figure 5 This is the second schematic diagram of the machine tool structure of the present invention;

[0038] Figure 6 This is one of the structural schematic diagrams of the rotating mechanism of the present invention;

[0039] Figure 7 This is the second structural schematic diagram of the rotating mechanism of the present invention;

[0040] Reference numerals:

[0041] 1. Split rotary table; 2. Machine tool; 3. Rotating mechanism;

[0042] 101, guide rail of main power slide; 102, motor reducer group; 103, hydraulic cylinder; 104, main rotating table; 105, main power slide screw; 106, auxiliary rotating table; 107, auxiliary rotating table; 108, guide rail of auxiliary power slide; 109, first driving motor; 110, auxiliary power slide screw; 111, limit block; 112, auxiliary power slide base; 113, main power slide base; 114, second driving motor; 115, clamping fixing table; 116, third driving motor; 117, pressing roller;

[0043] 201, first fixed seat; 202, first linear rail; 203, second fixed seat; 204, first carriage; 205, second carriage; 206, first nut seat; 207, first screw nut; 208, first ball screw; 209, first motor; 210, first electromechanical integrated seat; 211, machine bed; 212, second linear rail; 213, third carriage; 214, second ball screw; 215, second electromechanical integrated seat; 216, second motor; 217, third linear rail; 218, bed base; 219, third ball screw; 220, third motor; 221, third electromechanical integrated seat; 222, second screw nut; 223, second nut seat; 224, first slider; 225, second slider; 226, third fixed seat; 227, third nut seat; 228, third screw nut; 229, third slider;

[0044] 301, pulley connector; 302, pulley cover; 303, transmission belt; 304, fourth motor; 305, fifth motor: 306, shaft connector; 307, turntable; 308, electric spindle connector; 309, 4.5 kW clamp seat; 310, 4.5 kW clamp seat bottom plate; 311, first pulley; 312, second pulley; 313, electric spindle; 314, grinding head. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of specific embodiments of the present invention. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Reference Figure 1-7 The embodiment of the present invention provides a composite slewing bearing soft belt grinding machine tool comprising:

[0047] Split turntable 1, which is placed horizontally on the ground, is used to support and rotate workpieces of different sizes from 2m to 4m, so as to perform uniform grinding from different angles. The split turntable 1 includes an active slide and two auxiliary power slides, and the three slides are arranged at a fixed angle;

[0048] The split turntable 1 is composed of a main power slide base 113 , a clamping and fixing platform 115 , a main rotating platform 104 , a third driving motor 116 , a second driving motor, an auxiliary power slide base 112 , a first driving motor 109 , and an auxiliary rotating platform 106 . A main power slide guide rail 101 is provided on the main power slide base 113, a main rotating table 104 and a main power slide screw 105 are provided on the main power slide guide rail 101, a second driving motor 114 is provided at one end of the main power slide screw 105, a clamping and fixing table 115 is provided on the main power slide base 113, a third driving motor 116 and a hydraulic cylinder 103 are provided on the clamping and fixing table 115, a pressing roller 117 is provided below the hydraulic cylinder 103, the second driving motor 114 drives the main power slide screw 105 to move so that the clamping and fixing table 115 moves to the top of the workpiece on the main power slide guide rail 101 on the main power slide base 113, the third driving motor 116 drives the hydraulic cylinder 103 to drive the pressing roller 117 to clamp the workpiece, so that the workpiece is fixed on the main rotating table 104. An auxiliary power slide base 113 is provided with an auxiliary power slide guide rail 108, and the auxiliary power slide guide rail 108 is provided with the auxiliary rotating table 107 and the auxiliary power slide screw 110. One end of the auxiliary power slide screw 110 is provided with a first driving motor 109, and the other end is fixed with a limiting block 111. The first driving motor 109 drives the auxiliary power slide screw 110 to move so that the auxiliary rotating table 107 moves on the auxiliary power slide guide rail 108, and cooperates with the main rotating table to fix the processed workpiece on the supporting roller.

[0049] The main rotating table 104 is composed of a motor reducer group 102 and rubber supporting rollers. The main rotating table 104 mainly supports and rotates the workpiece. The motor reducer group 102 drives the rollers of the main rotating table 104 to rotate and cooperates with the auxiliary rotating table 107 to rotate, thereby rotating the workpiece to the corresponding grinding area.

[0050] A machine tool 2 is provided with a rotating mechanism 3, which is installed on the first carriage of the machine tool 3 and is equipped with two servo motors that are driven separately, and can be combined with the linear motion of the machine tool 3 to form a plurality of processing postures;

[0051] The machine tool 2 includes a machine tool base 218, on which a third linear rail 217 is installed. The machine tool base 218 is fixed to the ground by anchor bolts. A third motor 220 is installed on one side of the machine tool base 218. The output end of the third motor 220 is connected to a third ball screw 219. A fixing seat 201 is provided at the end of the third ball screw 219. A second screw nut 222 is provided on the third ball screw 219. A second nut seat 223 cooperates with the second screw nut 222 and is connected to the machine tool bed 211. The bottom of the machine tool bed 211 is provided with a third slider 229 and is slidably connected with the third linear rail 217 on the machine tool base 218 through the third slider 229. The machine tool bed 211 is provided with a first linear rail 202. The machine tool bed 211 is provided with a first motor 209. The output end of the first motor 209 is provided with a first ball screw 208. The end of the first ball screw 208 is provided with a second fixed seat 203. The first ball screw 208 is provided with a first screw nut 207. The first screw nut 207 is connected with the first The nut seat 206 cooperates with and is connected to the second carriage 205. The second carriage 205 is equipped with a first slider 224 and is slidably connected to the first linear rail 202 on the machine tool bed 211 through the first slider 224. The second carriage 205 is connected to the third carriage 213. A second motor 216 is installed on the transverse carriage 203. A second ball screw 214 is installed at the output end of the second motor 216. A third fixed seat 226 is installed on the end of the second ball screw 214. A third screw nut is provided on the second ball screw 214. The nut 228, the third screw nut 228 and the third nut seat 227 are matched and connected to the first carriage 204. A rotating mechanism is installed below the first carriage 204. Under the action of the third motor 220 and the third ball screw 219, the machine bed 211 is moved in the X direction. Under the action of the first motor 209 and the first ball screw 208, the second carriage 205 is moved in the Z direction. Under the action of the second motor 216 and the second ball screw 214, the third carriage 204 is moved in the Y direction. The axis direction of the electric spindle is perpendicular to the end face direction of the workpiece. The stroke of the machine tool in the X direction is set to 600mm to 750mm, the stroke of the machine tool in the Y direction is set to 250mm to 400mm, and the stroke of the machine tool in the Z direction is set to 750mm to 850mm.

[0052] The rotating mechanism 3 is installed and connected below the first carriage 204 through a pulley cover 302 therein.

[0053] A fourth motor 304 is installed in the pulley cover 302, and a second pulley 312 is connected to the output end of the fourth motor 304. The second pulley 312 is connected to the first pulley 311 through a transmission belt 303 to form a belt drive connection. The first pulley 311 is connected to the rotating shaft connector 306 through a pulley connector. A fifth motor 305 is installed in the rotating shaft connector 306. A turntable 307 and an electric spindle connector 308 are respectively installed at the output end of the fifth motor 305. The electric spindle connector 308 is connected to a 4.5-kW clamp seat 309. The 4.5-kW clamp seat 309 is connected to its 4.5-kW clamp seat bottom plate 310 and clamps the electric spindle 313. Grinding tools made of various materials (such as electroplated CBN, ceramic grinding wheels) can be installed on the electric spindle 313, and dry grinding or lubrication grinding can be performed to meet different processing requirements. The rotation angle of the B axis in the rotating mechanism is 0° to 180°, and the rotation angle of the C axis in the rotating mechanism is 0° to 180°.

[0054] The specific implementation method is as follows: when in use, the workpiece is clamped on the split turntable 1, and under the action of the third motor 220 and the third ball screw 219, the machine tool bed 211 is moved along the X direction, under the action of the first motor 209 and the first ball screw 208, the second carriage 205 is moved along the Z direction, and under the action of the second motor 216 and the second ball screw 214, the third carriage 204 is moved in the Y direction. Move the rotating mechanism to the part to be processed of the workpiece, the output end of the fourth motor 304 in the rotating mechanism 3 is connected to the second pulley 312, the second pulley 312 drives the first pulley 311 through belt transmission, the output end of the first pulley 311 is connected to the rotating shaft connector 306, the rotating shaft connector 306 drives the fifth motor 305 to rotate around the B axis, the output end of the fifth motor 305 is connected to the 4.5 kW clamping seat 309 and its 4.5 kW clamping seat bottom plate 310 and clamps the electric spindle 313, the electric spindle 313 rotates around the C axis through the output of the fifth motor 305, the rotating mechanism 3 rotates around the B axis and the C axis according to the instruction, so that the grinding tool can combine multiple processing postures.

[0055] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A composite slewing bearing soft belt grinding machine tool, characterized in that: include: A split turntable (1), wherein the split turntable (1) is placed horizontally on the ground, the split turntable (1) comprises an active slide and two auxiliary power slides, the split turntable (1) is arranged at a radial position of a workpiece to be processed, and the three slides are arranged at a fixed angle and are used to place, clamp and rotate the workpiece; a machine tool (2), wherein the machine tool (2) is installed at the front side of the split turntable (1); and a rotating mechanism (3), wherein the rotating mechanism is installed at the moving end area of ​​the machine tool (2).

2. The composite slewing bearing soft belt grinding machine tool according to claim 1 is characterized in that The split turntable (1) is composed of a main power slide base (113), a clamping and fixing platform (115), a main rotating platform (104), a third driving motor (116), a second driving motor, an auxiliary power slide base (112), a first driving motor (109), and an auxiliary rotating platform (106); the main power slide base (113) is provided with a main power slide guide rail (101), the main rotating platform (104) and A main power slide screw (105), one end of the main power slide screw (105) is provided with a second drive motor (114), a clamping and fixing platform (115) is provided on the main power slide base (113), a third drive motor (116) and a hydraulic cylinder (103) are provided on the clamping and fixing platform (115), a lower pressure roller (117) is provided below the hydraulic cylinder (103), and the second drive motor (114) drives the main power slide screw (105) ) movement causes the clamping and fixing platform (115) to move the main power slide rail (101) on the main power slide base (113) to above the workpiece, and the third drive motor (116) drives the hydraulic cylinder (103) to drive the pressing roller (117) to clamp the workpiece, so that the workpiece is fixed on the main rotating platform (104); an auxiliary power slide base (113) is provided with an auxiliary power slide rail (108), and the auxiliary power slide rail (108) is provided with the auxiliary rotating platform (107) and the auxiliary power slide screw (110), one end of the auxiliary power slide screw (110) is provided with a first drive motor (109), and the other end is fixed with a limit block (111), the first drive motor (109) drives the auxiliary power slide screw (110) to move the auxiliary rotating platform (107) on the auxiliary power slide rail (108), and cooperates with the main rotating platform to fix the processed workpiece on the supporting roller.

3. A composite slewing bearing soft belt grinding machine tool according to claim 1, characterized in that: The machine tool (2) comprises a machine tool base (218), a third linear rail (217) is installed on the machine tool base (218), the machine tool base (218) is fixed to the ground by anchor bolts, a third motor (220) is installed on one side of the machine tool base (218), the output end of the third motor (220) is connected to a third ball screw (219), a fixing seat (201) is arranged at the end of the third ball screw (219), and a second screw nut (222) is arranged on the third ball screw (219), The second nut seat (223) cooperates with the second screw nut (222) and is connected to the bottom of the machine tool bed (211); a third slider (229) is installed at the bottom of the machine tool bed (211) and is slidably connected to a third linear rail (217) on the machine tool base (218) through the third slider (229); a first linear rail (202) is installed on the machine tool bed (211); a first motor (209) is installed on the machine tool bed (211); and a first ball screw (208) is installed at the output end of the first motor (209). The first ball screw (208) has a second fixed seat (203) installed at its upper end, the first ball screw (208) is provided with a first screw nut (207), the first screw nut (207) cooperates with the first nut seat (206) and is connected to the second carriage (205), the second carriage (205) is provided with a first slider (224) and is slidably connected to the first linear rail (202) on the machine tool bed (211) through the first slider (224), the second carriage (205) and the transverse carriage ( 213 is connected, a second motor (216) is installed on the transverse carriage (203), a second ball screw (214) is installed on the output end of the second motor (216), a third fixed seat (226) is installed on the end of the second ball screw (214), a third screw nut (228) is arranged on the second ball screw (214), the third screw nut (228) is matched with the third nut seat (227) and connected to the first carriage (204), and a rotating mechanism is installed below the first carriage (204).

4. The composite slewing bearing soft belt grinding machine tool according to claim 1, characterized in that: The rotating mechanism (3) is provided with a pulley box (302), a fourth motor (304) is provided in the pulley box (302), an output end of the fourth motor (304) is connected with a second pulley (312), the second pulley (312) is connected with the first pulley (311) through a transmission belt (303) to form a belt transmission connection, the first pulley (311) is connected with the rotating shaft connecting member (306) through a pulley connecting member, and the rotating shaft A fifth motor (305) is installed in the connecting member (306), and a rotating disk (307) and an electric spindle connecting member (308) are respectively installed at the output end of the fifth motor (305). The electric spindle connecting member (308) is connected to a 4.5 kW clamping seat (309), and the 4.5 kW clamping seat (309v) is connected to its 4.5 kW clamping seat bottom plate (310) and clamps the electric spindle (313), and a grinding tool can be installed on the electric spindle (313).

5. The composite slewing bearing soft belt grinding machine tool according to claim 1, characterized in that: The split rotary table (1) and the machine tool (2) are placed horizontally on the ground, the axis direction of the electric spindle is perpendicular to the end face direction of the workpiece, the stroke of the machine tool in the X direction is set to 600 mm to 750 mm, the stroke of the machine tool in the Y direction is set to 250 mm to 400 mm, and the stroke of the machine tool in the Z direction is set to 750 mm to 850 mm.

6. The composite slewing bearing soft belt grinding machine tool according to claim 1, characterized in that: The rotating mechanism is installed below the first carriage (204); the B-axis rotation angle of the rotating mechanism is 0° to 180°; and the C-axis rotation angle of the rotating mechanism is 0° to 180°.

7. The composite slewing bearing soft belt grinding machine tool according to claim 1, characterized in that: The machine tool is equipped with B-axis and C-axis on the basis of three linear axes to adapt to multi-posture processing; in order to reduce the cost of the CNC system and meet the requirements of soft belt grinding of the slewing bearing, four-linkage is adopted to achieve five-axis four-linkage.

8. The composite slewing bearing soft belt grinding machine tool according to claim 1, characterized in that: The machine tool can realize automatic tool setting by installing a probe, which greatly improves the tool setting efficiency. Due to the above functional configuration, there is no need to use a large-sized turntable. Only a split turntable is needed, equipped with tools of different materials, electroplated CBN and ceramic grinding wheels, which can be dry ground or lubricated ground, and is suitable for soft belt grinding of spherical raceways and three-row cylindrical raceways.

9. The composite slewing bearing soft belt grinding machine tool according to claim 1, characterized in that: The cutting depth is 0.4mm, the cutting length is 115mm, including a smooth transition zone of 50mm, the grinding shape error is within 50μm, and the roughness is within Ra1.6.

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