CN218927329U - Pipe fitting grinding machine tool - Google Patents

Abstract

The utility model relates to a pipe fitting grinding machine tool, which comprises a machine body, a grinding device for grinding a workpiece, an x-axis feeding device arranged on the machine body, a moment turntable for adjusting the angle of the workpiece and a rotating device for rotating the workpiece, wherein the workpiece is fixed on the machine body; the grinding device is arranged on the lathe bed; the x-axis feeding device is arranged on the lathe bed; the moment turntable is arranged on the moving end of the x-axis feeding device; the rotating device is arranged on the moment turntable. The clamping part of the workpiece cannot be adjusted according to the difference of the workpiece sizes when the workpiece is clamped.

Description

Pipe fitting grinding machine tool

Technical Field

The utility model relates to a compound grinding machine tool, in particular to a pipe fitting grinding machine tool.

Background

Traditional internal grinding can only singly grind the internal circle and the end face of the pipe fitting, and cannot grind taper simultaneously. The torque turntable must be separately added to grind the taper of the pipe. If the grinding of the inner circle, the end face and the taper can be finished at one time only by clamping the workpiece for multiple times by multiple machine tools according to the sequence of the processing technology, the multiple times of clamping processing precision is not easy to ensure, and the clamping deformation of the pipe fitting is extremely easy to generate. It is highly desirable to have a compound grinding machine that can meet the above requirements at the same time and bring about an economic effect.

The existing grinding machine comprises a machine body, a workpiece box main shaft, a moment turntable, a feeding shafting, a reciprocating shafting, a hydraulic system, a lubricating system, a cooling system and an electric system;

and (3) a lathe bed: a carrier of the whole machine tool; the machine tool body is formed by casting a wear-resistant iron casting, and has good thermal stability and strong rigidity; the machine tool adopts a fully-closed housing, and the observation window is provided with meshes and is covered with an organic glass structure so as to prevent the grinding wheel from splashing to hurt people after being broken.

Workpiece box main shaft: transmitting power, and clamping the workpiece by the nose end; the workpiece box main shaft is an electric box main shaft, and the rotation of the box main shaft can realize stepless speed regulation; the machine tool clamping adopts a hydraulic chuck, an electromagnetic chuck, a hydraulic film chuck and the like, and simultaneously can meet the clamping requirement according to the workpiece processing requirement, improve the precision and the speed of workpiece clamping, have self-centering clamping function, and adopt a mode of clamping a long workpiece with a center frame or a double-center frame.

Moment revolving stage: pneumatic locking, driving the workpiece to rotate by 360 degrees, and using the workpiece as a B axis; the B shaft adopts a torque motor to drive a rotary table, the built-in arc grating of the rotary table effectively controls accurate indexing, and the rotary table adopts a pneumatic automatic locking device, so that the positioning requirement during the processing of complex parts can be met.

Feeding shafting: driving the headstock workpiece box to move up and down to be used as an X axis; the feeding mechanism guide rail adopts a high-precision linear guide rail so as to improve the movement precision and rigidity of a feeding shaft of the machine tool; the servo motor is digitally controlled, and the ball screw is driven by the backlash-free coupler, so that the linear motion with no clearance and high sensitivity can be realized; the guide rail, the lead screw and the protection device are all configured, so that the precision and the service life of the machine tool are effectively ensured.

Reciprocating shafting: driving the inner and outer grinding parts to move back and forth to respectively serve as a Z axis and a W axis; the high-precision linear guide rail is adopted for the reciprocating guide rail of the grinding wheel shaft (Z shaft and W shaft), so that the reciprocating motion precision and rigidity of the machine tool are ensured.

And (3) a hydraulic system: the hydraulic integrated power source of the whole machine tool meets the requirement of using each hydraulic element of the machine tool; the hydraulic clamp power source is supplied by an external hydraulic station.

Lubrication system: the lubrication integrated power source of the whole machine tool meets the use requirement of each lubrication element of the machine tool; the machine tool adopts an independent central lubrication system, and the lubrication system works before other actions after the machine tool is started.

And (3) a cooling system: the cooling integrated power source of the whole machine tool meets the requirement of using all cooling elements of the machine tool; the machine tool cooling system adopts a large-capacity water tank and is provided with a magnetic separator and paper tape for filtering. The roller is added at the bottom of the water tank, so that the water tank is convenient to move.

An electrical system: the electric integrated power source of the whole machine tool meets the requirement of using all electric elements of the machine tool; the machine tool control system adopts a Germany Siemens 828D numerical control system, and can realize automatic feeding, automatic grinding wheel trimming and automatic compensation; and the system can automatically detect faults of the digital control system, alarm faults and record the alarms. The color liquid crystal display is used for conveniently and rapidly inputting the size value, the grinding wheel value and the grinding parameter through a human-computer interface. The setting is simple, complex programming is not needed, the functions of multiple circulation subprograms are provided, and the functions of fault alarming, self-diagnosis, grinding wheel service life management and the like are provided.

The utility model relates to an MKF2120+B axis type numerical control multifunctional compound grinding machine which is particularly used for grinding an inner circular straight hole, an inner taper hole, a step hole and an inner end surface of a disc part or a long workpiece; an outer circle, an outer conical surface, an outer end surface and a step outer circle.

In the prior art, the taper of the pipe cannot be ground, the inner circle and the end face of the pipe cannot be ground, and the clamping part of the workpiece cannot be adjusted according to the different sizes of the workpiece when the workpiece is clamped.

Disclosure of Invention

According to the pipe fitting grinding machine tool, the problem that in the prior art, when the pipe fitting is in taper grinding, the inner circle and the end face of the pipe fitting cannot be ground, and when the workpiece is clamped, the clamping portions of the workpiece cannot be adjusted according to the size of the workpiece.

The technical scheme adopted by the embodiment of the application is as follows.

The pipe fitting grinding machine tool comprises a machine body, a grinding device for grinding a workpiece, an x-axis feeding device arranged on the machine body, a moment turntable for adjusting the angle of the workpiece and a rotating device for rotating the workpiece; the grinding device is arranged on the lathe bed; the x-axis feeding device is arranged on the lathe bed; the moment turntable is arranged on the moving end of the x-axis feeding device; the rotating device is arranged on the moment turntable.

The further technical scheme is as follows: the grinding device comprises an outer circle grinding wheel device for grinding the outer end surface of the workpiece and an inner circle grinding wheel device for grinding the inner end surface of the workpiece; the lathe bed is provided with a w-axis feeding device; the movable end of the w-axis feeding device is fixedly connected with the outer circle grinding wheel device and the inner circle grinding wheel device; the grinding device is far away from or near to the workpiece.

The further technical scheme is as follows: the excircle grinding wheel device comprises an end surface grinding wheel for grinding the outer surface of a workpiece, a grinding head seat for rotating the end surface grinding wheel, a first tray for supporting the grinding head seat, a second driving device for rotating the first tray and a grinding wheel heightening seat for heightening the grinding head seat; the driving end of the grinding head seat is fixedly connected with the end face grinding wheel; the grinding head seat is fixedly connected with the first tray; the first tray is rotatably connected to the grinding wheel heightening seat; the second driving device is positioned in the grinding wheel heightening seat; the driving end of the second driving device is fixedly connected with the first tray.

The further technical scheme is as follows: the inner circle grinding wheel device comprises an inner circle grinding wheel for grinding the inner side surface of a workpiece, a third driving device for rotating the inner circle grinding wheel and a grinding head housing for raising the third driving device; the inner circle grinding wheel is fixedly connected to the driving end of the third driving device; the grinding head housing is arranged at the moving end of the w-axis feeding device; the third driving device is arranged on the grinding head housing.

The further technical scheme is as follows: the moment turntable comprises a third shell, a second tray rotatably arranged on the third shell and a fourth driving device for driving the second tray to rotate; the second tray is provided with tooth shapes; the fourth driving device is fixedly connected inside the third shell; the driving end of the fourth driving device is fixedly connected with a first gear; the first gear is meshed with the tooth form.

The further technical scheme is as follows: the second tray is provided with a rotary plate; the rotating device is connected to the rotating plate in a sliding manner; the side surface of the rotating device is provided with a pressing block; when the rotating device is adjusted to a proper position, the pressing block fixedly connects the rotating device on the rotary plate; and the rotary plate is also provided with a diamond pen, and the diamond pen trims the grinding end of the grinding device.

The further technical scheme is as follows: the rotating device comprises a box body arranged on the rotating plate, a box body main shaft rotatably connected in the box body, a chuck for clamping a workpiece and a fifth driving device for driving the box body main shaft to rotate; the fifth driving device is arranged on the box body; the box main shaft is fixedly connected to the driving end of the fifth driving device; the box body main shaft is coaxially and fixedly connected with the chuck.

The further technical scheme is as follows: the rotating plate is also provided with a center frame for always positioning the workpiece on the horizontal axis; the center frame comprises a lower pressing piece arranged on the rotary plate, an upper pressing piece hinged on the lower pressing piece, a pressing piece for pressing the upper pressing piece on the lower pressing piece and an adjusting piece for enabling the axis of the workpiece to correspond to the rotating device; the pressing piece is rotationally connected to the lower pressing piece; the adjusting piece is connected to the lower pressing piece and the upper pressing piece in a threaded manner; the adjusting piece is rotationally connected with the ball towards the end face of the workpiece; the ball presses the workpiece and rolls on the surface of the workpiece.

The further technical scheme is as follows: the center frames are oppositely arranged along the direction of the workpiece; the upper pressing piece is connected with a hinge block in a sliding manner; a hinge rod is hinged on the hinge block; both ends of the hinging rod are hinged with the hinging blocks; two groups of hinging rods are arranged on the center frame; the hinge rods are movably connected; a supporting plate is arranged between the center frame and the rotary plate; the supporting plate slides along the direction of the workpiece; a screw rod is arranged on the supporting plate in a penetrating way; one end of the screw rod, which is close to the rotating device, is fixedly connected with a second gear; the second gear is meshed with a third gear; a rotating rod is arranged on the third gear; the rotary rod is rotatably connected to the rotary plate.

The further technical scheme is as follows: the center frame is provided with a third moving device; the third moving device comprises a rolling block for rolling and pressing the hinging rod, a supporting block for supporting the rolling block and a pushing piece for pushing the supporting block; the rolling block is rotatably connected to the supporting block; the pushing piece is fixedly connected to the center frame; the pushing end of the pushing piece is fixedly connected with the supporting block.

One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:

1. because the moment turntable is adopted to rotate the machining angle of the workpiece, the x-axis feeding device moves the moment turntable, and the end face of the workpiece is ground and the grinding conicity is achieved through the grinding device, so that the device can grind the end face of the pipeline while grinding the conicity of the pipeline.

2. Because the outer circle grinding wheel device and the inner circle grinding wheel device are arranged at the moving end of the w-axis feeding device, the outer circle grinding wheel device and the inner circle grinding wheel device are far away from or close to each other towards the direction of the workpiece, and further the outer end face and the inner circle of the workpiece can be ground simultaneously by the outer circle grinding wheel device and the inner circle grinding wheel device.

3. Because adopted first tray swivelling joint on the emery wheel bed hedgehopping seat, bistrique seat fixed connection is on first tray, and terminal surface emery wheel fixed connection is at the drive end of bistrique seat, and when first tray rotation angle, the terminal surface emery wheel rotates for the work piece, and rethread w axle feeding device removes the position that needs processing with the terminal surface emery wheel, and then realized through rotatory first tray, changes the angle of terminal surface emery wheel to can grind the tapering to the outer terminal surface of work piece.

4. Because the inner circle grinding wheel is fixedly connected to the driving end of the third driving device and faces the workpiece, the rotation angle of the workpiece through the moment turntable is realized, the inner end surface of the workpiece is moved to the inner circle grinding wheel by the x-axis feeding device, and the inner circle grinding wheel grinds the inner end surface of the workpiece.

5. Because the second tray is rotationally connected to the third shell, the tooth form is formed on the lower surface of the second tray, the driving end of the fourth driving device is fixedly connected with the first gear, and the first gear is meshed with the tooth form, so that the rotation angle of the workpiece is realized by driving the fourth driving device to rotate.

6. The rotating device is fixedly connected to the rotating plate through the pressing plate, and the diamond pen is arranged on the rotating plate, so that the rotating device rotates a workpiece and is contacted with the grinding end of the grinding device, the circumference of the workpiece is ground, and the grinding end of the grinding device is corrected through the diamond pen.

7. Because the chuck is adopted to clamp one end of the workpiece, the workpiece is rotated through the fifth driving device, and further, the circular motion of the workpiece is realized, and therefore the outer end face and the inner end face of the workpiece are machined.

8. Because the upper pressing piece and the lower pressing piece are fixedly connected through the pressing piece, the pressing end of the adjusting piece faces the axis of the workpiece, the ball is arranged at one end of the adjusting piece, facing the workpiece, of the adjusting piece, and the ball rolls on the surface of the workpiece, so that the adjusting piece moves towards the workpiece until the ball presses the end face of the workpiece, and the axis of the workpiece is consistent with the axis of the rotating device when the workpiece rotates.

9. Because the center frame is adopted to be in sliding connection with the support plate, the hinging blocks are in sliding connection with the upper pressing piece, two groups of hinging blocks are arranged on the upper pressing piece, the hinging rods are hinged between the corresponding hinging blocks, when the two groups of center frames are far away from each other, the hinging rods are displaced, and further, when pipe fittings with different length and size are processed, the two groups of center frames are far away from or close to each other, so that the rotation of the workpiece is more stable, and the processing error is smaller.

10. Because the pushing piece is adopted to press the rolling block to the hinge rod or to tightly press the hinge rod, the two groups of center frames are far away from each other when the right pushing piece pushes the hinge rod, and the two groups of center frames are close to each other when the pushing piece presses the hinge rod leftwards.

Drawings

Fig. 1 is a schematic view of a pipe grinding machine according to a first embodiment of the present utility model.

Fig. 2 is a top view of a pipe grinding machine according to a first embodiment of the present utility model.

Fig. 3 is an elevation view of a pipe grinding machine tool according to a first embodiment of the present utility model.

Fig. 4 is a partial enlarged view of a in fig. 1.

Fig. 5 is an internal schematic view of the wheel-pad elevation seat.

Fig. 6 is a schematic structural view of the moment turret.

Fig. 7 is a top view of a pipe grinding machine according to a second embodiment of the present utility model.

Fig. 8 is a partial enlarged view of B in fig. 7.

In the figure: 1. a bed body; 2. a grinding device; 21. an outer circle grinding wheel device; 211. an end face grinding wheel; 212. a grinding head seat; 213. a first tray; 214. a second driving device; 215. a grinding wheel heightening seat; 22. an inner circle grinding wheel device; 221. an inner circle grinding wheel; 222. a third driving device; 223. a grinding head cover shell; 3. an x-axis feeding device; 4. a moment turntable; 41. a third housing; 42. a second tray; 421. tooth form; 43. a fourth driving device; 44. a first gear; 5. a rotating device; 51. briquetting; 52. a main shaft of the box body; 53. a chuck; 54. a fifth driving device; 55. a case; 6. a w-axis feeding device; 7. a rotating plate; 71. a diamond pen; 8. a center frame; 81. a pressing piece; 82. a pressing piece; 821. a hinge block; 822. a hinge rod; 83. a pressing member; 831. a compression column; 832. a stud; 84. an adjusting member; 841. a ball; 85. a third mobile device; 851. a rolling block; 852. a support block; 853. a pushing member; 854. a sliding block; 855. a sliding groove; 9. a support plate; 91. a screw rod; 92. a second gear; 93. a third gear; 94. and (5) rotating the rod.

Detailed Description

According to the pipe fitting grinding machine tool, the problem that in the prior art, the pipe fitting cannot be ground when the taper is ground on the pipe fitting, and the clamping portions of the workpiece cannot be adjusted according to the difference of the sizes of the workpiece when the workpiece is clamped is solved.

In order to solve the above problems, the technical solution in the embodiments of the present application is as follows

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

First embodiment:

fig. 1 shows a schematic view of a pipe grinding machine according to a first embodiment of the present utility model. Fig. 2 shows a top view of a pipe grinding machine according to a first embodiment of the utility model. Fig. 3 shows a front view of a pipe grinding machine according to a first embodiment of the present utility model. Fig. 4 shows a partial enlarged view of a in fig. 1. Fig. 5 shows an internal schematic view of the grinding wheel lifting seat. Fig. 6 shows a schematic structural view of the torque turntable. Referring to fig. 1, 2, 3, 4, 5 and 6, the utility model discloses a pipe grinding machine. The direction Y in the figure is the front end of the structural schematic diagram of the utility model, and the direction X in the figure is the upper end of the structural schematic diagram of the utility model.

A pipe fitting grinding machine tool comprises a machine body 1, a grinding device 2 for grinding a workpiece, an x-axis feeding device 3 arranged on the machine body 1, a moment turntable 4 for adjusting the angle of the workpiece and a rotating device 5 for rotating the workpiece; the grinding device 2 is arranged on the lathe bed 1; the x-axis feeding device 3 is arranged on the lathe bed 1; the moment turntable 4 is arranged on the moving end of the x-axis feeding device 3; the rotation device 5 is arranged on the torque turret 4.

The bed body 1 is placed left and right. The x-axis feeding device 3 is arranged on the upper surface of the lathe bed 1 in a front-back manner. Preferably, the x-axis feeding device 3 is a moving module. The upper surface of the moving end of the x-axis feeding device 3 is fixedly connected with the lower surface of the moment turntable 4. The torque turret 4 is moved back and forth by the x-axis feeding device 3. The adjusting end of the torque turntable 4 is provided with a rotation device 5. The rotating device 5 holds the workpiece and rotates the workpiece. The torque turntable 4 rotates the workpiece in the horizontal direction. The rotating device 5 rotates the workpiece with the workpiece axis as the center of a circle. The grinding end of the grinding device 2 is directed towards the workpiece.

Because the moment turntable 4 is adopted to rotate the machining angle of the workpiece, the moment turntable 4 is moved left and right by the x-axis feeding device 3, and the end face of the workpiece is ground and the grinding conicity is achieved through the grinding device 2, so that the device can grind the end face of the pipe while grinding the conicity of the pipe.

The grinding device 2 comprises an outer circle grinding wheel device 21 for grinding the outer end surface of the workpiece and an inner circle grinding wheel device 22 for grinding the inner end surface of the workpiece; the lathe bed 1 is provided with a w-axis feeding device 6; the movable end of the w-axis feeding device 6 is fixedly connected with an outer circle grinding wheel device 21 and an inner circle grinding wheel device 22; the grinding device 2 is moved away from or closer to the workpiece.

The upper surface of the lathe bed 1 is fixedly connected with a w-axis feeding device 6,w and a left-right axis feeding device 6. Preferably, the w-axis feeding device 6 is a moving module. Preferably, the w-axis feeding device 6 is provided with two groups. The movable end of the w-axis feeding device 6 is fixedly connected with the outer circle grinding wheel device 21 and the inner circle grinding wheel device 22, and the w-axis feeding device 6 drives the outer circle grinding wheel device 21 and the inner circle grinding wheel device 22 to move left and right.

Because the outer circle grinding wheel device 21 and the inner circle grinding wheel device 22 are arranged at the moving end of the w-axis feeding device 6, the outer circle grinding wheel device 21 and the inner circle grinding wheel device 22 are far away from or close to each other towards the direction of the workpiece, and further the outer end face and the inner end face of the workpiece can be ground by the outer circle grinding wheel device 21 and the inner circle grinding wheel device 22.

The outer circle grinding wheel device 21 comprises an end surface grinding wheel 211 for grinding the outer surface of a workpiece, a grinding head seat 212 for rotating the end surface grinding wheel 211, a first tray 213 for supporting the grinding head seat 212, a second driving device 214 for rotating the first tray 213 and a grinding wheel heightening seat 215 for heightening the grinding head seat 212; the driving end of the grinding head seat 212 is fixedly connected with an end face grinding wheel 211; the grinder base 212 is fixedly connected with a first tray 213; the first tray 213 is rotatably connected to the grinding wheel elevation seat 215; the second driving device 214 is positioned in the grinding wheel heightening seat 215; the driving end of the second driving device 214 is fixedly connected with the first tray 213.

Preferably, the grinding head base 212 is a motor. The grinding wheel elevation seat 215 is rectangular with an opening at the bottom. The bottom surface of the grinding wheel heightening seat 215 is fixedly connected to the moving end of the w-axis feeding device 6. Preferably, the second driving device 214 is a motor. The driving end of the second driving device 214 is directed upward and passes through the grinding wheel elevation seat 215. The upper surface of the driving end of the second driving device 214 is fixedly connected with the lower surface of the first tray 213. The upper surface of the first tray 213 is fixedly connected to the lower surface of the grinder base 212. The drive end of the headstock 212 is oriented toward the workpiece.

When the outer end face of the workpiece is processed, the grinding head holder 212 is started, and the end face grinding wheel 211 is rotated. The face grinding wheel 211 is moved to the workpiece by the w-axis feeding device 6. The outer end face of the workpiece is then machined. When the outer end surface of the workpiece is required to be subjected to taper grinding, the second driving device 214 is started to drive the end surface grinding wheel 211 to form an angle with the workpiece, so that the taper grinding is processed.

Because the first tray 213 is rotatably connected to the grinding wheel heightening seat 215, the grinding wheel seat 212 is fixedly connected to the first tray 213, the end face grinding wheel 211 is fixedly connected to the driving end of the grinding wheel seat 212, when the first tray 213 rotates at an angle, the end face grinding wheel 211 rotates relative to a workpiece, the end face grinding wheel 211 moves to a position to be processed through the w-axis feeding device 6, and further the angle of the end face grinding wheel 211 is changed by rotating the first tray 213, so that the outer end face of the workpiece can be tapered.

The inner grinding wheel unit 22 includes an inner grinding wheel 221 for grinding the inner side surface of the workpiece, a third driving unit 222 for rotating the inner grinding wheel 221, and a grinding head housing 223 for raising the third driving unit 222; the inner circle grinding wheel 221 is fixedly connected to the driving end of the third driving device 222; the grinding head housing 223 is provided on the moving end of the w-axis feeding device 6; the third driving device 222 is provided on the grinding head housing 223.

The lower surface of the grinding head housing 223 is fixedly connected with the moving end of the w-axis feeding device 6, and the driving end of the third driving device 222 faces the workpiece. The diameter of the inner grinding wheel 221 is smaller than the diameter of the end grinding wheel 211. The lower surface of the third driving device 222 is fixedly connected to the upper surface of the grinding head housing 223.

When the inner end surface of the workpiece is processed, the third driving device 222 is started to drive the inner grinding wheel 221 to rotate. And simultaneously, the moving end of the w-axis feeding device 6 is moved until the inner circular grinding wheel 221 moves to the inner end surface machining position of the workpiece. When the inner end surface needs to be subjected to taper grinding, the moment turntable 4 is started to rotate the angle of the workpiece until the angle between the workpiece and the inner circle grinding wheel 221 changes, so that the inner end surface of the workpiece can be subjected to taper grinding.

Because the inner circle grinding wheel 221 is fixedly connected to the driving end of the third driving device 222, and the inner circle grinding wheel 221 faces the workpiece, the rotation angle of the workpiece through the moment turntable 4 is further realized, the x-axis feeding device 3 moves the inner end surface of the workpiece to the inner circle grinding wheel 221, and the inner circle grinding wheel 221 grinds the inner end surface of the workpiece.

The moment turret 4 includes a third housing 41, a second tray 42 rotatably provided on the third housing 41, and a fourth driving device 43 that drives the second tray 42 to rotate; the second tray 42 is provided with tooth shapes 421; the fourth driving device 43 is fixedly connected inside the third casing 41; the driving end of the fourth driving device 43 is fixedly connected with a first gear 44; the first gear 44 meshes with the tooth profile 421.

The third housing 41 has a cylindrical shape and an upper surface thereof is opened. The inner side of the third housing 41 is provided with a circular groove. The lower surface of the second tray 42 is provided with a circular arc block. The outer side surface of the circular arc block is attached to the side surface of the circular groove, and the second tray 42 is rotatably connected to the upper surface of the third housing 41. The inner side surface of the circular arc block is provided with tooth shapes 421. A fourth driving device 43 is fixedly connected in the circular groove. Preferably, the fourth driving means 43 is a motor. The driving end of the fourth driving means 43 is directed towards the upper end. The driving end of the fourth driving device 43 is fixedly connected with a first gear 44. The first gear 44 meshes with the tooth profile 421. When the workpiece is required to rotate at an angle, the fourth driving device 43 is driven to rotate, and the first gear 44 is driven to rotate, so that the second tray 42 is rotated.

Because the second tray 42 is rotatably connected to the third housing 41, the tooth shape 421 is formed on the lower surface of the second tray 42, the driving end of the fourth driving device 43 is fixedly connected with the first gear 44, and the first gear 44 is meshed with the tooth shape 421, so that the rotation angle of the workpiece by driving the fourth driving device 43 is realized.

The second tray 42 is provided with a rotating plate 7; the rotating device 5 is connected with the rotating plate 7 in a sliding way; the side surface of the rotating device 5 is provided with a pressing block 51; when the rotating device 5 is adjusted to a proper position, the pressing block 51 fixedly connects the rotating device 5 to the rotating plate 7; the rotary plate 7 is further provided with a diamond pen 71, and the diamond pen 71 trims the grinding end of the grinding device 2.

The rotary plate 7 is disposed on the second tray 42. The rotary plate 7 is provided with a dovetail block. The dovetail blocks are left and right placed on the upper surface of the rotary plate 7. The lower surface of the rotating device 5 is attached to the upper surface of the dovetail block. The front and rear end surfaces of the rotating device 5 are provided with pressing blocks 51. When the rotating device 5 needs to be fixed, the pressing block 51 is pressed against the dovetail block and the rotating device 5 simultaneously. The upper surface of the swivel plate 7 is also provided with a diamond pen 71. The grinding end of the diamond pen 71 faces the grinding wheel. When the grinding wheel is required to be ground, the grinding end of the diamond pen 71 is moved to the grinding wheel for grinding by moving the x-axis feeding device 3 and the moment turntable 4.

The rotating device 5 is fixedly connected to the rotating plate 7 through the pressing plate, and the diamond pen 71 is arranged on the rotating plate 7, so that the workpiece is rotated by the rotating device 5 and is contacted with the grinding end of the grinding device 2, and the grinding end of the grinding device 2 is corrected through the diamond pen 71.

The rotating device 5 comprises a box 55 arranged on the rotating plate 7, a box main shaft 52 rotatably connected in the box 55, a chuck 53 for clamping a workpiece and a fifth driving device 54 for driving the box main shaft 52 to rotate; the fifth driving device 54 is provided on the casing 55; the box main shaft 52 is fixedly connected to the driving end of the fifth driving device 54; the box spindle 52 is coaxially and fixedly connected with the chuck 53.

The case 55 is fixedly connected to the rotary plate 7 by the pressing block 51. The housing 55 is coaxially rotatably coupled to the housing spindle 52. The right end of the box main shaft 52 is fixedly connected with a chuck 53. Preferably, chuck 53 is a three jaw chuck. The jaw end of chuck 53 is oriented toward the workpiece. The left end of the chuck 53 is fixedly connected to the box spindle 52. The driving end of the fifth driving device 54 is fixedly connected to the left side surface of the main shaft 52 of the box body. Preferably, the fifth driving device 54 is a rotary hydraulic cylinder.

Because the chuck 53 is used to clamp one end of the workpiece, the workpiece is rotated by the fifth driving device 54, so that the circumferential movement of the workpiece is realized, and the outer end face and the inner end face of the workpiece are machined.

The rotating plate 7 is also provided with a center frame 8 for always positioning the workpiece on the horizontal axis; the center frame 8 comprises a lower pressing piece 81 arranged on the rotary plate 7, an upper pressing piece 82 hinged on the lower pressing piece 81, a pressing piece 83 pressing the upper pressing piece 82 on the lower pressing piece 81 and an adjusting piece 84 corresponding to the workpiece axis to the rotary device 5; the pressing piece 83 is rotatably connected to the lower pressing piece 81; the adjusting piece 84 is screwed on the lower pressing piece 81 and the upper pressing piece 82; the regulating member 84 is rotatably connected to the balls 841 toward the end face of the work; the balls 841 press against the workpiece and roll on the surface of the workpiece.

The hold-down member 81 is slidably attached to the rotating plate 7. When the hold-down member 81 is required to be fixed, the pressing pieces 51 are fixedly connected to the front and rear ends of the hold-down member 81. The front end of the upper pressing piece 82 is hinged to the front end of the lower pressing piece 81. The inner ends of the upper pressing member 82 and the lower pressing member 81 are circular. The rear end of the lower pressing member 81 is hinged with a pressing member 83. The pressing member 83 includes a pressing column 831 and a stud 832 that press the upper pressing member 82. A stud 832 is hinged to the rear end of the hold-down member 81. The compaction column 831 is threaded on the stud 832. The lower surface of the pressing column 831 presses the upper surface of the upper pressing piece 82. The adjusting members 84 are arrayed in a plurality of circles around the workpiece. Preferably, the adjustment members 84 are in three groups. The end of the adjustment member 84 facing the workpiece is provided with a rotary slot. The rotation groove rotatably connects the balls 841. The balls 841 roll and press the outer end surface of the work piece.

Because the upper pressing piece 82 and the lower pressing piece 81 are fixedly connected through the pressing piece 83, the pressing end of the adjusting piece 84 faces the axis of the workpiece, the ball 841 is arranged at one end of the adjusting piece 84 facing the workpiece, and the ball 841 rolls on the surface of the workpiece, so that the adjusting piece 84 is moved towards the workpiece until the ball 841 presses the end face of the workpiece, and the axis of the workpiece is consistent with the axis of the rotating device 5 when the workpiece rotates.

The X-axis feeding device 3 comprises a w-axis linear guide rail, an X-axis screw feeding, an X-axis sliding plate and an X-axis feeding seat.

The w-axis feeding device 6 comprises a Z-axis screw feeding device, a Z-axis linear guide rail, a Z-axis feeding seat adjusting mechanism, a Z-axis sliding plate and a Z-axis feeding seat.

Second embodiment:

fig. 7 is a top view of a pipe grinding machine according to a second embodiment of the present utility model. Fig. 8 is a partial enlarged view of B in fig. 7. The second embodiment differs from the first embodiment in that, as shown in connection with fig. 1, 2, 3, 4, 5, 6, 7 and 8:

the center frame 8 is oppositely arranged along the direction of the workpiece; the upper pressing piece 82 is connected with a hinge block 821 in a sliding way; a hinge rod 822 is hinged on the hinge block 821; both ends of the hinge rod 822 are hinged with hinge blocks 821; two groups of hinging rods 822 are arranged on the center frame 8; the hinge rods 822 are movably connected; a supporting plate 9 is arranged between the center frame 8 and the rotating plate 7; the support plate 9 slides along the workpiece direction; the supporting plate 9 is provided with a screw rod 91 in a penetrating way; one end of the screw rod 91, which is close to the rotating device 5, is fixedly connected with a second gear 92; the second gear 92 is meshed with a third gear 93; the third gear 93 is provided with a rotary rod 94; the rotary lever 94 is rotatably connected to the rotary plate 7.

The center frame 8 is provided with a group on the left and right. The hinge block 821 is slidably coupled to the side of the upper pressing member 82 forward and backward. Two sets of hinge blocks 821 are provided on the upper press block 51. The two sets of centre frames 8 are arranged opposite. A hinge rod 822 is hinged between the upper end hinge block 821 of the right upper pressing block 51 and the lower end hinge block 821 of the left upper pressing block 51. A hinge rod 822 is hinged between the lower end hinge block 821 of the left upper pressing block 51 and the upper end hinge block 821 of the right upper pressing block 51. The two sets of hinge rods 822 are hinged. The center frame 8 is connected with the supporting plate 9 in a left-right sliding way. Screw rods 91 are provided on the rotary plate 7 in the left and right directions. The screw 91 is inserted into the support plate 9. The screw 91 is screwed to the support plate 9. The left side of the screw 91 is coaxially and fixedly connected with a second gear 92. The rear side of the swivel plate 7 is provided with an extension plate. The rotary rod 94 is inserted into the extension plate from left to right. The right side of the rotating rod 94 is coaxially and fixedly connected with the third gear 93. The third gear 93 is meshed with the second gear 92. The left side of the rotary rod 94 is fixedly connected with a knob, through which the rotary rod 94 can be rotated more conveniently.

When it is necessary to clamp workpieces of different length dimensions, the distance between the centre frames 8 is adjusted to a suitable distance, and then the rotary lever 94 is rotated to move the support plate 9 left and right until it is moved to the desired position.

Because the center frame 8 is slidably connected to the supporting plate 9, the hinge blocks 821 are slidably connected to the upper pressing piece 82, two groups of hinge blocks 821 are arranged on the upper pressing piece 82, hinge rods 822 are hinged between the corresponding hinge blocks 821, when the two groups of center frames 8 are far away from each other, the hinge rods 822 displace, and further, when pipe fittings with different length and size are processed, the two groups of center frames 8 are far away from or close to each other, so that the rotation of the workpiece is more stable, and the processing error is smaller.

The center frame 8 is provided with a third moving device 85; the third moving means 85 includes a rolling block 851 rolling against the hinge lever 822, a supporting block 852 supporting the rolling block 851, and a pushing member 853 pushing the supporting block 852; the rolling block 851 is arranged opposite to the hinge lever 822; the rolling block 851 facing the pushing member 853 is rotatably coupled to the supporting block 852; a rolling block 851 remote from the pushing member 853 is slidably coupled to the support block 852; the pushing member 853 is fixedly connected to the center frame 8; the pushing end of the pushing member 853 is fixedly connected to the supporting block 852.

The support block 852 is concave. The support block 852 is provided with a slide groove 855 on the left and right. The sliding groove 855 is slidably coupled to the sliding block 854. The rolling block 851 on the left side of the support block 852 is rotatably coupled to the sliding block 854. The rotating block on the right side of the support block 852 is rotatably coupled to the support block 852. The hinge lever 822 is located between two sets of sliding blocks 854. The right end of the support block 852 is fixedly coupled to the pushing end of the pushing member 853. The pushing member 853 is fixedly attached to the right center frame 8.

When it is necessary to increase the distance between the two sets of center frames 8, the pushing end of the driving pushing member 853 is moved to the right so that the side surfaces of the rolling block 851 on the left side are fitted and the hinge lever 822 is pushed to the right, thereby moving the two sets of center frames 8 away from each other. When it is necessary to reduce the distance between the two sets of center frames 8, the pushing end of the driving pushing member 853 is moved to the left so that the side surface of the right rolling block 851 abuts against the hinge lever 822 and pushes the hinge lever 822 to the left, thereby approaching the two sets of center frames 8 to each other.

Because the pushing member 853 is adopted to press the rolling block 851 against the hinge rod 822 or tightly press the hinge rod 822, the two groups of center frames 8 are far away from each other when the pushing member 853 pushes the hinge rod 822 rightwards, and the two groups of center frames 8 are close to each other when the pushing member 853 presses the hinge rod 822 leftwards.

While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. The pipe fitting grinding machine tool is characterized by comprising a machine body, a grinding device for grinding a workpiece, an x-axis feeding device arranged on the machine body, a moment turntable for adjusting the angle of the workpiece and a rotating device for rotating the workpiece; the grinding device is arranged on the lathe bed; the x-axis feeding device is arranged on the lathe bed; the moment turntable is arranged on the moving end of the x-axis feeding device; the rotating device is arranged on the moment turntable.

2. The pipe grinding machine of claim 1, wherein the grinding means comprises an outer cylindrical grinding wheel means for grinding the outer end surface of the workpiece and an inner cylindrical grinding wheel means for grinding the inner end surface of the workpiece; the lathe bed is provided with a w-axis feeding device; the movable end of the w-axis feeding device is fixedly connected with the outer circle grinding wheel device and the inner circle grinding wheel device; the grinding device is far away from or near to the workpiece.

3. The pipe grinding machine tool according to claim 2, wherein the outer circle grinding wheel device comprises an end surface grinding wheel for grinding the outer surface of a workpiece, a grinding head seat for rotating the end surface grinding wheel, a first tray for supporting the grinding head seat, a second driving device for rotating the first tray, and a grinding wheel heightening seat for heightening the grinding head seat; the driving end of the grinding head seat is fixedly connected with the end face grinding wheel; the grinding head seat is fixedly connected with the first tray; the first tray is rotatably connected to the grinding wheel heightening seat; the second driving device is positioned in the grinding wheel heightening seat; the driving end of the second driving device is fixedly connected with the first tray.

4. The pipe grinding machine of claim 2, wherein the inner grinding wheel unit includes an inner grinding wheel for grinding an inner side surface of the workpiece, a third driving unit for rotating the inner grinding wheel, and a grinding head housing for raising the third driving unit; the inner circle grinding wheel is fixedly connected to the driving end of the third driving device; the grinding head housing is arranged at the moving end of the w-axis feeding device; the third driving device is arranged on the grinding head housing.

5. The pipe grinding machine of claim 1 wherein said torque turntable includes a third housing, a second pallet rotatably disposed on said third housing, and a fourth drive means for driving said second pallet in rotation; the second tray is provided with tooth shapes; the fourth driving device is fixedly connected inside the third shell; the driving end of the fourth driving device is fixedly connected with a first gear; the first gear is meshed with the tooth form.

6. The pipe grinding machine of claim 5 wherein the second tray has a swivel plate disposed thereon; the rotating device is connected to the rotating plate in a sliding manner; the side surface of the rotating device is provided with a pressing block; when the rotating device is adjusted to a proper position, the pressing block fixedly connects the rotating device on the rotary plate; and the rotary plate is also provided with a diamond pen, and the diamond pen trims the grinding end of the grinding device.

7. The pipe grinding machine of claim 6, wherein the rotating means comprises a housing provided on the rotary plate, a housing spindle rotatably connected in the housing, a chuck for clamping a workpiece, and fifth driving means for driving the housing spindle to rotate; the fifth driving device is arranged on the box body; the box main shaft is fixedly connected to the driving end of the fifth driving device; the box body main shaft is coaxially and fixedly connected with the chuck.

8. The pipe grinding machine of claim 6 wherein the swivel plate is further provided with a center rest for always positioning the workpiece on a horizontal axis; the center frame comprises a lower pressing piece arranged on the rotary plate, an upper pressing piece hinged on the lower pressing piece, a pressing piece for pressing the upper pressing piece on the lower pressing piece and an adjusting piece for enabling the axis of the workpiece to correspond to the rotating device; the pressing piece is rotationally connected to the lower pressing piece; the adjusting piece is connected to the lower pressing piece and the upper pressing piece in a threaded manner; the adjusting piece is rotationally connected with the ball towards the end face of the workpiece; the ball presses the workpiece and rolls on the surface of the workpiece.

9. The pipe grinding machine of claim 8 wherein said steady rest is disposed opposite along the workpiece; the upper pressing piece is connected with a hinge block in a sliding manner; a hinge rod is hinged on the hinge block; both ends of the hinging rod are hinged with the hinging blocks; two groups of hinging rods are arranged on the center frame; the hinge rods are movably connected; a supporting plate is arranged between the center frame and the rotary plate; the supporting plate slides along the direction of the workpiece; a screw rod is arranged on the supporting plate in a penetrating way; one end of the screw rod, which is close to the rotating device, is fixedly connected with a second gear; the second gear is meshed with a third gear; a rotating rod is arranged on the third gear; the rotary rod is rotatably connected to the rotary plate.

10. A pipe grinding machine as defined in claim 9 wherein said steady rest is provided with third moving means; the third moving device comprises a rolling block for rolling and pressing the hinging rod, a supporting block for supporting the rolling block and a pushing piece for pushing the supporting block; the rolling block is arranged opposite to the hinging rod; the rolling block facing the pushing piece is rotationally connected to the supporting block; the rolling block far away from the pushing piece is connected to the supporting block in a sliding way; the pushing piece is fixedly connected to the center frame; the pushing end of the pushing piece is fixedly connected with the supporting block.

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