阅读说明：本技术 一种高速数控珩铰机床及高精度孔的加工方法 (High-speed numerical control honing and reaming machine tool and high-precision hole machining method ) 是由 刘云清 黄彬 陈文明 谷春春 王翠玲 于 2019-10-14 设计创作，主要内容包括：本发明公开了铰珩机床技术领域的一种高速数控珩铰机床,包括底座、主轴箱、回转工作台和立柱,主轴箱内的传动主轴包括具有中心流水通道的传动轴,所述传动轴的表面套设有从上至下依次连接的上端盖、第一角接触球轴承、内圈顶紧环、第二角接触球轴承和下端盖,所述上端盖和下端盖与主轴箱固定连接,所述传动轴位于上端盖内腔的表面螺纹连接有并紧螺母、位于并紧螺母和第一角接触球轴承之间的表面套设有垫片,所述传动轴的顶端转动连接有旋转接头,所述传动轴的底部内腔设置有ER弹性筒夹、表面的底部螺纹连接有ER锁紧螺母。本发明采用角接触球轴承和并紧螺母,使传动轴转动的精度更高；通过旋转接和带中心出水流道的传动轴,可以快速排除切削液和碎渣,起到很好的冷却润滑作用,可以减少深长孔在加工时候出现的热变形量,提高加工精度。(The invention discloses a high-speed numerical control honing and reaming machine tool in the technical field of reaming and honing machine tools, which comprises a base, a spindle box, a rotary worktable and an upright post, wherein a transmission spindle in the spindle box comprises a transmission shaft with a central water flow channel, the surface of the transmission shaft is sleeved with an upper end cover, a first angle contact ball bearing, an inner ring jacking ring, a second angle contact ball bearing and a lower end cover which are sequentially connected from top to bottom, the upper end cover and the lower end cover are fixedly connected with the spindle box, the surface of the transmission shaft, which is positioned in the inner cavity of the upper end cover, is in threaded connection with a clamping nut, the surface, which is positioned between the clamping nut and the first angle contact ball bearing, is sleeved with a gasket, the top end of the transmission shaft is in rotary connection with a rotary joint, the inner. The angular contact ball bearing and the clamping nut are adopted, so that the rotating precision of the transmission shaft is higher; through the rotary connection and the transmission shaft with the central water outlet flow channel, cutting fluid and slag can be quickly removed, a good cooling and lubricating effect is achieved, the thermal deformation of the deep and long holes during machining can be reduced, and the machining precision is improved.)

1. The utility model provides a high-speed numerical control honing and reaming lathe, includes base (1), headstock (5), swivel work head (8) and stand (2), its characterized in that: the upright post (2) is fixedly arranged on the rear side of the top of the base (1), the front side of the upright post (2) is fixedly provided with a Z-axis linear moving module (3), and the output end of the Z-axis linear moving module (3) is fixedly connected with a main spindle box (5) through a connecting plate (4); a main shaft servo motor (6) is fixedly installed at the top of the main shaft box (5), a plurality of transmission main shafts (7) which are circumferentially arranged are connected to the periphery of the bottom of the main shaft box (5) in a penetrating and rotating mode, and an output shaft of the main shaft servo motor (6) is in transmission connection with the transmission main shafts (7) through a transmission mechanism so that the transmission main shafts (7) can synchronously rotate;

the transmission main shaft (7) comprises a transmission shaft (701) with a central water channel, the surface of the transmission shaft (701) is sleeved with an upper end cover (702), a first angular contact ball bearing (703), an inner ring jacking ring (704), a second angular contact ball bearing (705) and a lower end cover (706) which are sequentially connected from top to bottom, the upper end cover (702) and the lower end cover (706) are fixedly connected with the main shaft box (5), the surface of the transmission shaft (701) positioned in the inner cavity of the upper end cover (702) is connected with a clamping nut (707) in a threaded manner, a gasket (708) is sleeved on the surface positioned between the clamping nut (707) and the first angular contact ball bearing (703), the top end of the transmission shaft (701) is rotatably connected with a rotary joint (711), an ER elastic collet chuck (709) is arranged in an inner cavity of the bottom of the transmission shaft (701), and an ER locking nut (710) is connected to the bottom of the surface in a threaded mode.

2. The high-speed numerical control honing and reaming machine tool according to claim 1, characterized in that: the output shaft of swivel work head (8) is driven by drive unit, the output shaft passes through gear engagement and is connected the pivot synchronous rotation of swivel work head (9), the one end fixedly connected with cam (10) of output shaft, the top of swivel work head (9) evenly is equipped with the work piece station corresponding with transmission main shaft (7) along circumference, cam sensor support (11) fixedly connected with are located cam (10) directly over cam sensor (12) are passed through to one side of swivel work head (8), station sensor support (13) fixedly connected with and work piece station corresponding station sensor (14) are passed through to one side of swivel work head (8).

3. The high-speed numerical control honing and reaming machine tool according to claim 1, characterized in that: z axle rectilinear movement module (3) are including fixing linear guide (31) in stand (2) positive both sides and fixing motor cabinet (32) at stand (2) positive top center, the top fixed mounting of motor cabinet (32) has Z axle servo motor (33), the output shaft of Z axle servo motor (33) passes through shaft coupling (34) fixedly connected with ball screw (35), the bottom of ball screw (35) is rotated and is connected with nut seat (36) of fixing on stand (2), the surface cover of ball screw (35) is equipped with transmission seat (37), sliding connection has sharp slider (38) on linear guide (31), transmission seat (37) and sharp slider (38) all with connecting plate (4) fixed connection.

4. The high-speed numerical control honing and reaming machine tool according to claim 1, characterized in that: the top fixedly connected with roof (15) of stand (2), the top fixedly connected with balance cylinder (16) of roof (15), the output of balance cylinder (16) run through roof (15) and with headstock (5) fixed connection, the rear side of stand (2) is provided with liquid nitrogen holding vessel (17) of being connected with balance cylinder (16), balance cylinder (16) and automatically controlled cabinet (21) electric connection.

5. The high-speed numerical control honing and reaming machine tool according to claim 4, characterized in that: the balance mechanism is characterized in that linear guide columns (18) are fixedly connected to two sides of the front end of the balance cylinder (16), the bottom ends of the linear guide columns (18) penetrate through the spindle box (5) and are fixedly connected with the base (1), and the spindle box (5) is connected with the linear guide columns (18) in a sliding mode.

6. A processing method of a high-precision hole of a high-speed numerical control reaming and honing machine tool is characterized by comprising the following steps:

firstly, starting a system: electrifying each system, and detecting whether the running state of each system is normal;

controlling a Z-axis linear moving module (3) to drive a connecting plate (4) to lift upwards through an electric control cabinet (21), and after the connecting plate is lifted to the highest position, arranging a first brush cleaning shaft (7 a) and a second brush cleaning shaft (7 f) into brushes, arranging a rough grinding shaft (7 b) into a rough honing cutter, arranging a semi-fine grinding shaft (7 c) into a semi-fine grinding cutter, and arranging a first fine grinding shaft (7 d) and a second fine grinding shaft (7 e) into a fine grinding cutter;

thirdly, putting a workpiece into a feeding station (91) of the rotary working disc (9), and pressing and fixing the workpiece by using a special honing tool;

fourthly, a main shaft servo motor (6) is started to drive and transmit six transmission shafts (701) to synchronously rotate, a main shaft box (5) is controlled to move downwards at a set speed and a set stroke according to a set program to carry out honing, the main shaft box (5) is lifted according to the set program after the honing is finished, and a honing tool withdraws from a workpiece;

fifthly, after the spindle box (5) retracts to the set position, the rotary worktable (8) drives the rotary working disc (9) to rotate for a set angle, and then the workpiece on the feeding station (91) is switched to the first brush cleaning station (92);

sixthly, controlling the honing spindle box (5 to move downwards at the set speed and stroke according to a set program to perform honing processing, lifting the spindle box (5) according to the set program after the processing is finished, withdrawing the honing tool from the workpiece, analogizing according to the program to finish a whole set of flow of the honing processing, finally switching the workpiece which is finished processing on the second brush cleaning station (97) to a blanking station (98), manually taking out the workpiece on the blanking station (98) and installing a new workpiece to the blanking station (91);

seventhly, repeating the third step to the sixth step, and manually feeding the processed workpieces, wherein the vacant stations are manually fed, so that the continuous production and processing which is suitable for large batch and has extremely high efficiency are realized;

eighthly, in the processing process, the sewage processor (20) continuously filters the cooling liquid and continuously provides clean cooling liquid;

and ninthly, after finishing the processing of all the workpieces, closing the whole system and cutting off the power supply.

Technical Field

The invention relates to the technical field of reaming and honing machines, in particular to a high-speed numerical control honing and reaming machine tool and a high-precision hole machining method.

Background

The numerical control reaming and honing machine tool is a grinder for honing the finish machining surface of a workpiece by using a honing head. The honing tool is mainly used for honing holes of workpieces in the manufacturing industries of automobiles, tractors, hydraulic parts, bearings, aviation and the like. The reaming and honing machine tool has a vertical type and a horizontal type, the working stroke of a main shaft of the vertical type reaming and honing machine tool is short, and the reaming and honing machine tool is suitable for honing cylinder bodies, box body holes and the like. The honing head embedded with the oilstone is driven by a vertically arranged main shaft to rotate, and meanwhile, the honing head performs vertical reciprocating feeding motion under the driving of a hydraulic device, the horizontal reaming and honing machine tool has longer working stroke and is suitable for honing deep holes, and the depth can reach 3000 mm. The horizontally arranged honing head does not rotate but only does axial reciprocating motion, the workpiece is driven by the main shaft to rotate, and the middle part of the machine body is provided with a central frame for supporting the workpiece and a guide frame for supporting the honing rod.

In the application publication nos.: CN106217230A, application published date: 2016-12-14, a Chinese patent invention discloses a numerical control reaming and honing machine tool, which comprises a frame, wherein a movable workbench is arranged on the frame, a clamp for fixing materials to be processed is arranged on the workbench, a headstock is arranged above the workbench, the headstock and the frame are in sliding fit in the vertical direction, the headstock is connected with a first vertically arranged screw rod, and a first motor for driving the first screw rod to rotate is arranged on the frame; a spindle seat in sliding fit with the headstock in the vertical direction is arranged in the headstock, the spindle is arranged on the spindle seat, a second screw rod connected with the spindle seat is vertically arranged on the headstock, and a second motor for driving the second screw rod to rotate is arranged on the headstock; the frame is provided with a third motor for driving the main shaft to rotate. The invention optimizes the structure of the existing numerical control reaming and honing machine tool, and provides the numerical control reaming and honing machine tool which has simple structure, reasonable design and stable and reliable work.

In the application publication nos.: CN104385110A, application published date: 2015-03-04 discloses a numerical control vertical high-precision reaming and honing machine tool and a honing method thereof, wherein the numerical control vertical high-precision reaming and honing machine tool comprises a machining station upright post assembly, two mutually parallel main shaft support plate screw rods and machining station clamp support plate screw rods are vertically arranged in the machining station upright post, a main shaft support plate and a machining station clamp support plate are arranged outside the machining station upright post, the main shaft support plate is connected with a screw rod nut on the main shaft support plate screw rod through a main shaft support plate connecting plate, the machining station clamp support plate is connected with a screw rod nut on the machining station clamp support plate screw rod through a machining station clamp support plate connecting plate, binding surfaces of the support plate and the upright post are respectively fixed in a sliding mode through a guide rail and a slide block, the lower end face of the machine tool main shaft assembly is connected with a honing tool, a full-floating honing clamp. The invention can greatly improve the size precision, the surface roughness and the geometric shape precision of the hole when the inner surface of the hole part is precisely honed.

The two reaming and honing machine tools have the advantages that the processing efficiency of workpieces is low when the workpieces are honed in batches, the stability of the main shaft structure is poor, the transmission precision of the main shaft is reduced, the cooling effect of a cutter is poor, the cutter is thermally deformed, the problem that the inner hole has large cylindricity deviation is caused, the honing capacity of the deep and long hole of the traditional reaming and honing machine tool is low, and the processing requirement of the workpieces cannot be met.

Disclosure of Invention

The invention aims to provide a high-speed numerical control honing and reaming machine tool and a high-precision hole machining method, which are used for solving the problem of deep long hole machining in the prior art, can greatly improve the working efficiency and the machining quality, reduce the defective rate, and achieve the aims of saving energy and improving the efficiency by carrying out centralized treatment and recycling on honing liquid.

In order to achieve the purpose, the invention provides the following technical scheme: the high-speed numerical control honing and reaming machine tool comprises a base, a spindle box, a rotary worktable and an upright post, wherein the upright post is fixedly arranged on the rear side of the top of the base; a main shaft servo motor is fixedly installed at the top of the main shaft box, a plurality of transmission main shafts which are circumferentially arranged are connected to the periphery of the bottom of the main shaft box in a penetrating and rotating mode, and an output shaft of the main shaft servo motor is in transmission connection with the transmission main shafts through a transmission mechanism so that the transmission main shafts can synchronously rotate;

the transmission main shaft comprises a transmission shaft with a central water flowing channel, an upper end cover, a first angular contact ball bearing, an inner ring jacking ring, a second angular contact ball bearing and a lower end cover are sleeved on the surface of the transmission shaft from top to bottom, the upper end cover, the lower end cover and the main shaft box are connected in sequence, a clamping nut is connected to the surface of the transmission shaft in the inner cavity of the upper end cover in a threaded manner, a gasket is sleeved on the surface of the transmission shaft between the clamping nut and the first angular contact ball bearing in a threaded manner, a rotary joint is rotatably connected to the top end of the transmission shaft, an ER elastic collet chuck is arranged in the inner cavity of the bottom of the transmission shaft.

The invention further defines the technical scheme that the high-speed numerical control honing and reaming machine tool is characterized in that: the output shaft of the rotary working table is driven by a driving unit, the output shaft is meshed with and connected with a rotating shaft of the rotary working table through a gear, the rotating shaft of the rotary working table synchronously rotates, a cam is fixedly connected to one end of the output shaft, workpiece stations corresponding to a transmission main shaft are uniformly arranged on the top of the rotary working table along the circumferential direction, a cam sensor located right above the cam is fixedly connected to one side of the rotary working table through a cam sensor support, and a station sensor corresponding to the workpiece stations is fixedly connected to one side of the rotary working table through a station sensor support.

Aforementioned high-speed numerical control honing hinge lathe, Z axle rectilinear movement module is including fixing the linear guide in the positive both sides of stand and fixing the motor cabinet at the positive top center of stand, the top fixed mounting of motor cabinet has Z axle servo motor, Z axle servo motor's output shaft passes through shaft coupling fixedly connected with ball screw, ball screw's bottom is rotated and is connected with the nut seat of fixing on the stand, ball screw's surface cover is equipped with the transmission seat, sliding connection has sharp slider on the linear guide, transmission seat and sharp slider all with connecting plate fixed connection.

According to the high-speed numerical control honing and reaming machine tool, the top of the stand column is fixedly connected with the top plate, the top of the top plate is fixedly connected with the balance cylinder, the output end of the balance cylinder penetrates through the top plate and is fixedly connected with the spindle box, the rear side of the stand column is provided with the liquid nitrogen storage tank connected with the balance cylinder, and the balance cylinder is electrically connected with the electric control cabinet.

According to the high-speed numerical control honing and reaming machine tool, the two sides of the front end of the balance cylinder are fixedly connected with the linear guide columns, the bottom ends of the linear guide columns penetrate through the spindle box and are fixedly connected with the base, and the spindle box is connected with the linear guide columns in a sliding mode.

A processing method of a high-precision hole of a high-speed numerical control reaming and honing machine tool comprises the following steps:

firstly, starting a system: electrifying each system, and detecting whether the running state of each system is normal;

secondly, the Z-axis linear moving module is controlled by the electric control cabinet to drive the connecting plate to lift upwards, and after the connecting plate is lifted to the highest position, the first brush cleaning shaft and the second brush cleaning shaft are provided with the brushes, the coarse grinding shaft is provided with the coarse honing cutter, the semi-fine grinding shaft is provided with the semi-fine grinding cutter, and the first fine grinding shaft and the second fine grinding shaft are provided with the fine grinding cutter;

thirdly, putting a workpiece on a feeding station of the rotary working disc, and pressing and fixing the workpiece by using a special honing tool;

starting a main shaft servo motor, driving and transmitting six transmission shafts to synchronously rotate, controlling a main shaft box to move downwards at a set speed and a set stroke according to a set program, carrying out honing processing, lifting the main shaft box according to the set program after the processing is finished, and withdrawing a honing tool from a workpiece;

fifthly, after the spindle box returns to the set position, the rotary worktable drives the rotary working disc to rotate for a set angle, and then the workpiece on the feeding station is switched to the first brush cleaning station;

sixthly, controlling a honing spindle box (5 to move downwards at a set speed and stroke according to a set program to perform honing processing, lifting the spindle box according to the set program after the processing is finished, withdrawing a honing tool from a workpiece, analogizing according to the program to finish a whole set of flow of the honing processing, switching the workpiece which is finished processing on a second brush cleaning station to a blanking station, manually taking out the workpiece on the blanking station and installing a new workpiece to the blanking station;

seventhly, repeating the third step to the sixth step, and manually feeding the processed workpieces, wherein the vacant stations are manually fed, so that the continuous production and processing which is suitable for large batch and has extremely high efficiency are realized;

eighthly, in the processing process, the sewage processor also continuously filters the cooling liquid and continuously provides clean cooling liquid;

and ninthly, after finishing the processing of all the workpieces, closing the whole system and cutting off the power supply.

Compared with the prior art, the invention has the beneficial effects that:

according to the numerical control multi-station continuous honing machine, a large batch of workpieces are efficiently and stably honed by adopting a numerical control multi-station continuous honing method, the Z-axis linear moving module drives the spindle box to move up and down and position, the Z-axis servo motor can accurately control stroke, speed and the like, and the positioning precision is high; a main shaft servo motor is used for driving a transmission main shaft to control a honing tool on the transmission main shaft to rotate, the rotating speed is uniform, and the torque is large; the hydraulic station drives the rotary worktable to start and stop in a rotating way, so that the actions of the spindle box, the transmission spindle and the rotary working disc are closely and reasonably matched, and each honing process is efficiently and stably completed; when the automatic cutting machine works, the rotation of the main shaft servo motor is controlled, so that workpieces are sequentially switched among a plurality of workpiece stations, and the workpieces are taken out after final machining is finished, so that the automatic cutting machine is orderly and reasonably in action matching and process arrangement, the working efficiency of the whole set of equipment is extremely high, the machining quality is stable, the manual operation amount in the whole process is extremely small, and the safety coefficient is greatly improved;

due to the adoption of the angular contact ball bearing and the clamping nut, the transmission shaft can be guaranteed to bear larger axial force, the rotation precision of the transmission shaft is higher, the stability is good, the jumping of the cutter is effectively controlled, the machining precision of the inner hole is improved, the machining precision of the inner hole can reach +/-0.001 mm, and the clamping device is particularly suitable for workpieces with large cutting amount;

during operation, honing liquid enters the transmission shaft with the central water outlet flow channel through the rotary joint and then enters the water outlet hole with the end part of the central hole-outlet cutter to be ejected, and by means of the structure, cutting liquid and slag can be rapidly removed in deep long hole machining, so that a good cooling and lubricating effect is achieved, the thermal deformation of the deep long hole in machining can be reduced, the machining precision is improved, the cutter abrasion is reduced, the service life is prolonged, and the honing liquid is suitable for precision machining of the deep long hole and the elongated hole.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of the spindle box, the spindle servo motor and the spindle according to the present invention;

FIG. 3 is a schematic top view of a rotatable work plate according to the present invention;

FIG. 4 is a schematic cross-sectional view of the spindle structure of the present invention;

FIG. 5 is a schematic perspective sectional view of a Z-axis linear motion module according to the present invention;

FIG. 6 is a schematic perspective view of a rotary table and rotating table arrangement according to the present invention;

fig. 7 is a schematic view of the structure of the cam and the cam sensor of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a base; 2. a column; 3. a Z-axis linear moving module; 4. a connecting plate; 5. a main spindle box; 6. a spindle servo motor; 7. a transmission main shaft; 8. a rotary table; 9. rotating the working disc; 10. a cam; 11. a cam sensor support; 12. a cam sensor; 13. a station sensor support; 14. a station sensor; 15. a top plate; 16. a balancing cylinder; 17. a liquid nitrogen storage tank; 18. a linear guide post; 19. a hydraulic station; 20. a sewage treatment device; 21. an electric control cabinet; 22. a control button;

31. a linear guide rail; 32. a motor base; 33. a Z-axis servo motor; 34. a coupling; 35. a ball screw; 36. a nut seat; 37. a transmission seat; 38. a linear slider;

701. a drive shaft; 702. an upper end cover; 703. a first angular contact ball bearing; 704. the inner ring is tightly propped against the ring; 705. a second angular contact ball bearing; 706. a lower end cover; 707. tightening the nut; 708. a gasket; 709. an ER elastic collet; 710. ER lock nuts; 711. a rotary joint; 712. a cutter with a central outlet hole;

7a, a first brush cleaning shaft; 7b, roughly grinding a shaft; 7c, semi-finish grinding the shaft; 7d, a first fine grinding shaft; 7e, a second fine grinding shaft; 7f, a second brush cleaning shaft;

91. a feeding station; 92. a first brush cleaning station; 93. a rough grinding station; 94. a semi-finish grinding station; 95. a first finish grinding station; 96. a second finish grinding station; 97. a second brush cleaning station; 98. and (5) a blanking station.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present embodiment provides a high-speed numerical control reaming and honing machine tool, which includes a base 1, a spindle box 5, a rotary table 8 and an upright post 2, wherein the upright post 2 is fixedly installed at the rear side of the top of the base 1, a Z-axis linear movement module 3 is fixedly installed at the front side of the upright post 2, an output end of the Z-axis linear movement module 3 is fixedly connected with the spindle box 5 through a connecting plate 4, specifically, the Z-axis linear movement module 3 includes linear guide rails 31 fixed at two sides of the front side of the upright post 2 and a motor base 32 fixed at the center of the front side of the upright post 2, a Z-axis servo motor 33 is fixedly installed at the top of the motor base 32, an output shaft of the Z-axis servo motor 33 is fixedly connected with a ball screw 35 through a coupling 34, a nut base 36 fixed on the upright post 2 is rotatably, the linear guide rail 31 is connected with a linear sliding block 38 in a sliding manner, the transmission seat 37 and the linear sliding block 38 are both fixedly connected with the connecting plate 4, when the linear guide rail works, the output shaft of the Z-axis servo motor 33 drives the ball screw 35 to rotate through the coupler 34, the ball screw 35 drives the transmission seat 37 to move upwards or downwards, and then the transmission seat 37 drives the spindle box 5 and the linear sliding block 38 to move upwards or downwards through the connecting plate 4.

The top of the main shaft box 5 is fixedly provided with a main shaft servo motor 6, the periphery of the bottom of the main shaft box 5 is connected with six transmission main shafts 7 which are circumferentially arranged in a penetrating and rotating mode, an output shaft of the main shaft servo motor 6 is in transmission connection with the six transmission main shafts 7 through a transmission mechanism, so that the six transmission main shafts 7 synchronously rotate, the effect that the output shaft of the main shaft servo motor 6 drives the six transmission main shafts 7 to synchronously rotate through the transmission mechanism is achieved, and the spindle box is simple in structure and convenient to install and maintain.

A rotary worktable 8 positioned right below a spindle box 5 is fixedly arranged on the front side of the top of a base 1, an output shaft of the rotary worktable 8 is connected with a rotary working disc 9, a cam 10 is fixedly connected with an extending end of the output shaft, workpiece stations corresponding to a transmission spindle 7 are uniformly arranged on the top of the rotary working disc 9 along the circumferential direction, a cam sensor 12 positioned right above the cam 10 is fixedly connected with one side of the rotary worktable 8 through a cam sensor support 11, a station sensor 14 corresponding to the workpiece stations is fixedly connected with one side of the rotary worktable 8 through a station sensor support 13, a hydraulic station 19 is arranged on one side of the base 1, an electric control cabinet 21 is arranged on the other side of the base 1, the rotary worktable 8 is driven by the hydraulic station 19, and the Z-axis linear moving module 3, the spindle servo motor 6, the hydraulic station 19, the cam sensor 12 and the station sensor 14, the rotary worktable 8 is driven in a hydraulic mode, the structure is simple, and the cost is low.

As shown in fig. 7, the cam 10 is installed on the output shaft of the rotary table 8 and rotates together with the output shaft, the output shaft rotates for one circle, the output shaft of the rotary table 8 drives the rotary working disc 9 to switch one station, when the output shaft rotates for one circle clockwise, the cam 10 also rotates for one circle clockwise, when the cam sensor 12 approaches to the convex part of the cam 10, the cam sensor 12 obtains a positive signal, along with the clockwise rotation of the cam 10, the left edge of the cam 10 leaves the cam sensor 12, the cam sensor 12 obtains a negative signal, at this time, the electric control cabinet 21 controls the hydraulic station 19 to accelerate the rotation speed of the output shaft, the rotary table 8 switches the stations rapidly, when the cam sensor 12 meets the right edge of the cam 10, the cam sensor 12 obtains a positive signal, at this time, the electric control cabinet 21 reduces the rotation speed of the output shaft, and at the station above is sensed, through the control logic, the switching speed of stations on the rotary working disc 9 can be improved, the processing beat is improved, whether the rotary working disc 9 rotates or not can be fed back, whether the rotary working disc 9 actually stops at a preset position or not can be detected accurately, closed-loop control over the position of the rotary working disc 9 is really realized, violent accidents that a cutter collides with a workpiece due to the fact that the rotary working disc 9 does not rotate to the position can be effectively prevented, the safety of a numerical control machine tool is ensured, and batch processing is safer and more reliable.

Specifically, as shown in fig. 2, the six transmission main shafts 7 are divided into a first brush cleaning shaft 7a, a rough grinding shaft 7b, a semi-finish grinding shaft 7c, a first finish grinding shaft 7d, a second finish grinding shaft 7e and a second brush cleaning shaft 7f, brushes are installed in the first brush cleaning shaft 7a and the second brush cleaning shaft 7f, a rough honing tool is installed in the rough grinding shaft 7b, a semi-finish grinding shaft 7c is installed in the semi-finish grinding tool, and a finish grinding tool is installed in the first finish grinding shaft 7d and the second finish grinding shaft 7 e; as shown in fig. 3, the number of the workpiece stations is eight, and the workpiece stations correspond to eight stations, specifically, a feeding station 91, a first brush cleaning station 92, a rough grinding station 93, a semi-finish grinding station 94, a first finish grinding station 95, a second finish grinding station 96, a second brush cleaning station 97, and a discharging station 98.

The top of the upright post 2 is fixedly connected with a top plate 15, the top of the top plate 15 is fixedly connected with a balance cylinder 16, the output end of the balance cylinder 16 penetrates through the top plate 15 and is fixedly connected with a main spindle box 5, the rear side of the upright post 2 is provided with a liquid nitrogen storage tank 17 connected with the balance cylinder 16, the balance cylinder 16 is electrically connected with an electric control cabinet 21, two sides of the front end of the balance cylinder 16 are fixedly connected with linear guide columns 18, the bottom ends of the linear guide columns 18 penetrate through the main spindle box 5 and are fixedly connected with the base 1, the main spindle box 5 is connected with the linear guide columns 18 in a sliding mode, part of the weight of the main spindle box 5 is distributed on the upright post 2 through the matching of the liquid nitrogen top plate 15, the balance cylinder 16 and the liquid nitrogen storage tank 17, the load of the Z-axis servo motor 33 is reduced, energy consumption is saved, part of the weight of the main spindle box 5 is distributed, the spindle box 5 is made more stable when moving up and down.

As shown in fig. 4, the transmission spindle 7 includes a transmission shaft 701 having a central water flow passage, the surface of the transmission shaft 701 is sleeved with an upper end cover 702, a first angular contact ball bearing 703, an inner ring tightening ring 704, a second angular contact ball bearing 705 and a lower end cover 706 which are connected in sequence from left to right, the upper end cover 702 and the lower end cover 706 are fixedly connected with the spindle box 5, the surface of the transmission shaft 701, which is located in the inner cavity of the upper end cover 702, is connected with a tightening nut 707 through a thread, the surface, which is located between the tightening nut 707 and the first angular contact ball bearing 703, is sleeved with a gasket 708, the left end of the transmission shaft 701 is rotatably connected with a rotary joint 711, the right inner cavity of the transmission shaft 701 is provided with an ER elastic collet 709, the right end of the surface is connected with an ER locking nut 710 through a thread, when the transmission shaft is installed, the lower end cover 706 is fixed on the lower end surface of the, wherein the outer ring of the second angular contact ball bearing 705 is abutted against the step end face of the lower end cover 706, the inner ring is abutted against the step face of the transmission shaft 701, then the gasket 708 is sleeved, finally the upper end cover 702 is installed on the upper end face of the spindle box 5 after the tightening nut 707 is screwed in and tightened, after the installation, the inner ring of the first angular contact ball bearing 703 can adjust the pretightening force through the tightening nut 707, the pretightening force can be adjusted through the size of the gasket 708 on the outer ring of the first angular contact ball bearing 703, and finally the proper bearing clearance can be adjusted, thereby achieving very high transmission precision, because of adopting the angular contact ball bearings 703, 705 and the tightening nut 707, the transmission shaft 701 can be ensured to bear larger axial force, the rotation precision of the transmission shaft 701 is higher, the stability is good, the cutter bounce is effectively controlled, the machining precision of the inner hole is improved, the machining precision of the inner hole, three loosening screws are arranged on the side face of the tightening nut 707, and after the tightening nut 707 reaches a locking position, the loosening screws are tightened, so that the loosening is avoided in the use process for a long time, and the transmission performance of the transmission shaft 701 is more stable and reliable; the lower part of the transmission shaft 701 is provided with a tapered inner hole, the periphery of the lower end part is provided with threads, and the ER locking nut 710 with the inner threads is matched with the tapered ER elastic collet chuck 709, so that the concentricity of a tool rotation center and the transmission shaft 701 can be ensured, the coaxiality is less than 5 mu m, and the deflection and the shaking of the tool are effectively reduced or effectively controlled, thereby greatly reducing the impact on a workpiece caused by tool deflection and vibration in the processing process, greatly improving the honing precision and consistency, and being beneficial to improving the processing precision of the inner hole; before the work, can have center hole cutter 712 in the installation of the bottom of corase grind axle 7b, half correct grinding axle 7c, first finish grinding axle 7d and second finish grinding axle 7e, in operation, honing fluid passes through rotary joint 711 and gets into the transmission shaft 701 that takes central play water runner, then the apopore that gets into the tip that has center hole cutter 712 jets out, this kind of structure can be when deep slot hole processing, can get rid of cutting fluid and disintegrating slag fast, play fine cooling and lubrication action, can reduce the thermal deformation volume that deep slot hole appears when processing, improve the machining precision, reduce cutter wearing and tearing, and service life is prolonged, and is suitable for the precision finishing of deep slot hole and elongated hole.

The rear side of base 1 is provided with sewage treatment ware 20, the front side is provided with control button 22, sewage treatment ware 20 mainly comprises the water tank, filter paper, water pump and connecting pipe, the honing liquid that the cutter during operation flows into to the water tank in, filter the back through filter paper with iron fillings and debris etc. that the honing produced, carry out repetitive cycle and use, reduce the honing liquid and discharge, energy-concerving and environment-protective, it takes out the honing liquid after filtering to recycle the water pump, leading-in to rotary joint 711 through the connecting pipe, make honing liquid recycle.

One specific application of this embodiment is: the processing steps of the high-precision hole are as follows:

firstly, starting a system: electrifying each system, and detecting whether the running state of each system is normal;

secondly, controlling the Z-axis linear moving module 3 to drive the connecting plate 4 to lift upwards through the electric control cabinet 21, and after the connecting plate is lifted to the highest position, arranging a first brush cleaning shaft 7a and a second brush cleaning shaft 7f into brushes, arranging a rough grinding shaft 7b into a rough honing cutter, arranging a semi-fine grinding shaft 7c into a semi-fine grinding cutter, and arranging a first fine grinding shaft 7d and a second fine grinding shaft 7e into a fine grinding cutter;

thirdly, putting a workpiece into a feeding station 91 of the rotary working disc 9, and tightly pressing and fixing the workpiece by using a special honing tool;

fourthly, starting a main shaft servo motor 6, driving and driving six transmission shafts 701 to synchronously rotate, controlling a main shaft box 5 to move downwards at a set speed and a set stroke according to a set program, carrying out honing processing, lifting the main shaft box 5 according to the set program after the processing is finished, and withdrawing a honing tool from a workpiece;

fifthly, after the spindle box 5 retracts to the set position, the rotary worktable 8 drives the rotary working disc 9 to rotate for a set angle, and then the workpiece on the feeding station 91 is switched to the first brush cleaning station 92;

sixthly, controlling the honing spindle box 5 to move downwards at the set speed and stroke according to a set program to perform honing processing, lifting the spindle box 5 according to the set program after the processing is finished, withdrawing the honing tool from the workpiece, analogizing according to the program to finish a whole set of flow of the honing processing, finally switching the workpiece which is finished processing on the second brush cleaning station 97 to the blanking station 98, manually taking out the workpiece on the blanking station 98 and installing a new workpiece to the blanking station 91;

seventhly, repeating the third step to the sixth step, and manually feeding the processed workpieces, wherein the vacant stations are manually fed, so that the continuous production and processing which is suitable for large batch and has extremely high efficiency are realized;

eighthly, in the processing process, the sewage processor 20 continuously filters the cooling liquid and continuously provides clean cooling liquid;

and ninthly, after finishing the processing of all the workpieces, closing the whole system and cutting off the power supply.

The processing takt time of a single workpiece is about 20s on average; the fastest processing beat is 9 seconds (the inner hole of the compressor connecting rod), and the highest precision of the honing processing of the hole can be controlled to be about +/-0.001 mm; the inner diameter of the machine tool which is most suitable for processing holes ranges from 5 to 35; the roughness range of the holes is wide, and the holes can be honed to Ra0.1 or honed to Ra 5; the cylindricity of the hole can reach 0.002mm at most; the coolant liquid that uses in the whole honing course of working all can filter through sewage treatment ware 20, filters the back with iron fillings and debris etc. that the honing produced, carries out recycling, reduces the honing liquid and discharges, energy-concerving and environment-protective.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.