CN115870820A

CN115870820A - Novel vertical grinding machine tool

Info

Publication number: CN115870820A
Application number: CN202310120547.4A
Authority: CN
Inventors: 曹先强; 白辉明; 周国灿; 赖安业
Original assignee: FUJIAN CHENGGONG MACHINE TOOL CO LTD
Current assignee: FUJIAN CHENGGONG MACHINE TOOL CO LTD
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-03-31
Anticipated expiration: 2043-02-16
Also published as: CN115870820B

Abstract

The invention relates to the technical field of grinding machine tool equipment, and particularly provides a novel vertical grinding machine tool, which comprises a base table, a positioning rotating device assembled on the base table, a lifting support frame fixed on the base table and an automatic grinding device assembled at a lifting movable end of the lifting support frame, wherein the base table is provided with a positioning rotating device; the machine tool provided by the invention solves the problem that the existing general grinding machine can only grind a single workpiece generally, can grind one type of workpiece, realizes batch processing, increases processing efficiency by times, can finish grinding processing of the workpiece at one time when the workpiece is ground and processed to the end, and solves the problem that the subsequent secondary grinding processing is needed due to the existence of grinding processing dead angles near the bottom end of the workpiece.

Description

Novel vertical grinding machine tool

Technical Field

The invention relates to the technical field of grinding machine tool equipment, and particularly provides a novel vertical grinding machine tool.

Background

A vertical grinding machine tool, which is called a vertical grinding machine for short, is a machine tool for performing surface grinding processing on a workpiece by using a grinding tool. The existing vertical grinding machine is generally a universal grinding machine, although the universal grinding machine can be applied to grinding of workpieces with most structures, the universal vertical grinding machine generally only has one or two grinding output parts, can only process a single workpiece basically, cannot perform synchronous batch grinding processing, and reduces the actual processing efficiency by times; in addition, in the vertical grinding machine tool, the workpiece is basically vertically placed and clamped in the clamp, when the workpiece is actually clamped, the workpiece is firstly placed on the table surface of the clamp and then clamped, the bottom end surface of the workpiece is directly contacted with the table surface of the clamp, and during grinding, in order to avoid direct collision between the grinding tool and the table surface of the clamp, the grinding tool is not completely ground to the bottom, and a grinding dead angle exists near the bottom end position where the workpiece is contacted with the table surface of the clamp.

Disclosure of Invention

In order to solve the above problems, the present invention provides a novel vertical grinding machine tool for solving the problems mentioned in the above background art.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: the utility model provides a novel vertical grinding machine, is in including base platform, assembly base bench location rotating device, fix base bench lift supports and the assembly is in the automatic grinding device of lift supports lift expansion end.

The positioning and rotating device comprises a plurality of positioning clamps which are uniformly distributed on the circumference and are vertically and rotationally driven to be installed on the base platform; the automatic grinding device comprises a plurality of grinding shafts which are arranged in a one-to-one correspondence manner with the positioning clamps and used for fixing the grinding tool, the grinding shafts are vertically arranged in a rotating manner, the grinding shafts are uniformly distributed around the distribution center circumference of the positioning clamps, and the grinding shafts are arranged in a plurality of the positioning clamps and can move and be adjusted in the radial direction synchronously.

Circumference evenly distributed is provided with a plurality of location clamp splice on the positioning fixture, the location clamp splice includes the sliding block that sets up along positioning fixture radial sliding, it is provided with the guide way to link up in the radial relative both sides that lie in positioning fixture on the sliding block, relative sliding is provided with two movable clamp splice in the guide way, two the movable clamp splice with equal horizontally connect has clamping spring between the sliding block, the part from the top down that the movable clamp splice lies in the guide way outside divide into clamp splice portion and tray portion in proper order, the tray portion is relative the outside protrusion of clamp splice portion.

Preferably, the automatic grinding device further comprises a central motor, a gear train transmission device, a double universal coupling, a sliding guide frame, a sliding support and a central distance adjusting mechanism; the central motor, the gear train transmission device and the sliding guide frame are all fixed at the lifting movable end of the lifting support frame; the output shaft of the central motor is positioned in the distribution center of the positioning clamps, the gear train transmission device is input by the output shaft of the central motor and is dispersedly provided with a plurality of output ends which are in one-to-one correspondence with the grinding shafts, a double universal coupling is connected between the output end of the gear train transmission device and the grinding shaft at the corresponding position, the sliding guide frame comprises a sliding rail frame, a plurality of horizontal sliding rails which are in one-to-one correspondence with the grinding shafts are uniformly distributed on the sliding rail frame around the circumference of the output shaft of the central motor, the sliding support is correspondingly and slidably mounted on each horizontal sliding rail, and the grinding shaft is vertically penetrated, rotatably mounted on the sliding support at the corresponding position; the central distance adjusting mechanism is assembled on the slide rail frame and is used for synchronously moving and adjusting the plurality of grinding shafts.

Preferably, the double universal couplings comprise two universal joints and telescopic rods fixedly connected between the two universal joints; one universal joint is fixedly connected to the output end of the gear train transmission device, and the other universal joint is fixedly connected to the top shaft end of the grinding shaft.

Preferably, the central distance adjusting mechanism comprises an electric push rod and a plurality of connecting rods, and the connecting rods are connected between the double universal couplings and the output end of the electric push rod in a one-to-one correspondence manner; the output end of the electric push rod is fixed with a hinged end, and the telescopic rod comprises a spline sliding sleeve fixed on one of the universal joints and a spline sleeve rod fixedly connected on the other universal joint; the spline sleeve rod is slidably arranged in the spline sliding sleeve, and a rotating bearing in rotating fit is arranged on the spline sliding sleeve; and two ends of the connecting rod are hinged between the hinged end head and the rotating bearing.

Preferably, gear train transmission is including fixing the transmission case of lift support frame lift expansion end, fixed mounting has sun gear on the central motor output shaft, sun gear is located in the transmission case, surround in the transmission case sun gear circumference evenly distributed has the driven shaft of a plurality of vertical rotations installations, and is a plurality of the driven shaft is with a plurality of grinding axle one-to-one sets up, be fixed with on the driven shaft with sun gear meshing's driven gear, one of them in two universal coupling universal joint with the corresponding position driven shaft axle end fixed connection.

Preferably, the lifting support frame comprises two lifters fixed on the base platform and a lifting beam horizontally fixed between the lifting ends of the two lifters; the central motor, the transmission case and the sliding guide frame are all fixed on the lifting beam.

Preferably, the positioning and rotating device further comprises a rotary driving motor and a synchronous belt; positioning fixture includes that vertical rotation is installed base bench rotating base, the last band pulley that is fixed with of rotating base, the rotation driving motor is fixed base bench and output shaft fixed connection are in one of them on positioning fixture's rotating base, it is a plurality of the band pulley passes through hold-in range synchronous drive.

Preferably, electric turnplates are symmetrically and fixedly installed at two ends of the length direction of the lifting cross beam, the electric turnplates are fixed at the lifting ends of the lifter at the same side position, and the electric turnplates horizontally rotate and output.

The technical scheme has the following advantages or beneficial effects: 1. the invention provides a novel vertical grinding machine tool, which is provided with a multi-station clamp for independently clamping the same kind of workpieces, and a plurality of grinding output parts which correspond to a plurality of clamp stations one by one are arranged in an automatic grinding device, so that multi-station synchronous batch grinding processing can be performed on cylindrical tubular workpieces, the problem that the conventional general grinding machine can only perform single workpiece grinding processing generally is solved, the processing batch is realized, and the processing efficiency is multiplied.

2. The invention provides a novel vertical grinding machine tool, which is characterized in that a positioning clamp is specially designed for a positioning clamping block in a positioning clamp in an improved mode, so that a workpiece can be horizontally supported while being effectively clamped and positioned, the workpiece is higher than the table surface of the clamp and is not in direct contact with the table surface of the clamp, the grinding tool can be conveniently ground and machined to the end, and grinding dead angles do not exist.

3. The invention provides a novel vertical grinding machine tool, which can drive a plurality of grinding shafts to synchronously rotate through one power input of a central motor, ensure the synchronism and consistency of the grinding process, can synchronously move and adjust the positions of the plurality of grinding shafts on the basis of the distribution center of a plurality of positioning clamps through an arranged central distance adjusting mechanism, can grind the inner wall and the outer wall of a cylindrical tubular workpiece, can realize synchronous carry grinding treatment in a radial range, and can realize carry grinding of the plurality of grinding shafts in the axial range of the workpiece under the drive of a lifting support frame, thereby ensuring the synchronism and consistency of the grinding degree of the plurality of workpieces when the plurality of workpieces are subjected to batch processing.

Drawings

The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. The drawings, in which like numerals refer to like parts throughout the several views and which are not necessarily drawn to scale, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic perspective view of a novel vertical grinding machine tool provided by the invention at a viewing angle.

Fig. 2 is a partially enlarged schematic view at a in fig. 1.

Fig. 3 is a partially enlarged schematic view at B in fig. 1.

Fig. 4 is a schematic perspective view of a novel vertical grinding machine tool provided by the invention from another view angle.

Fig. 5 is a front view of the novel vertical grinding machine tool provided by the invention.

Fig. 6 is a top view of the novel vertical grinding machine provided by the invention.

Fig. 7 is a cross-sectional view of C-C in fig. 6.

Fig. 8 is a cross-sectional view of D-D in fig. 6.

Fig. 9 is a partially enlarged schematic view at E in fig. 7.

In the figure: 1. a base table; 2. positioning a rotating device; 21. positioning a clamp; 211. positioning the clamping block; 2111. a slider; 2112. a guide groove; 2113. a movable clamping block; 2114. a clamping block part; 2115. a support block part; 2116. a clamping spring; 212. rotating the base; 213. a pulley; 22. a rotary drive motor; 23. a synchronous belt; 3. lifting the supporting frame; 31. an elevator; 311. a lifting guide rail; 312. a lifting drive motor; 313. a lead screw; 314. a lifting slide block; 32. a lifting beam; 321. an electric turntable; 4. an automatic grinding device; 41. a central motor; 42. a gear train transmission device; 421. a transmission case; 4211. a box body; 4212. a box cover; 422. a sun gear; 423. a driven shaft; 4231. a driven gear; 43. a double universal coupling; 431. a universal joint; 432. a telescopic rod; 4321. a spline sliding sleeve; 4322. a spline housing rod; 4323. a rotating bearing; 44. grinding the shaft; 45. a sliding guide frame; 451. a fixing plate; 452. a slide rail frame; 4521. a horizontal slide rail; 46. a sliding support; 47. a central distance adjusting mechanism; 471. an electric push rod; 4711. a hinged end; 472. a connecting rod.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for the purpose of providing those skilled in the art with a more complete, accurate and thorough understanding of the concept and technical solution of the present invention, and to facilitate the implementation thereof, but not to limit the present invention.

As shown in fig. 1, 4, 5, 6 and 7, a novel vertical grinding machine comprises a base table 1, a positioning and rotating device 2 assembled on the base table 1, a lifting support frame 3 fixed on the base table 1, and an automatic grinding device 4 assembled at the lifting movable end of the lifting support frame 3. The machine tool provided by the invention mainly carries out grinding processing on a cylindrical tubular mechanical part, and particularly can mainly carry out grinding processing on the cylindrical inner wall or the cylindrical outer wall of a cylindrical pipe fitting.

As shown in fig. 1, 2, 7 and 8, the positioning and rotating device 2 includes four positioning jigs 21 which are evenly distributed circumferentially and are vertically and rotationally driven to be mounted on the base table 1; four positioning clamping blocks 211 are uniformly distributed on the upper circumference of the positioning fixture 21, each positioning clamping block 211 comprises a sliding block 2111 which slides along the radial direction of the positioning fixture 21, guide grooves 2112 are formed in the two opposite sides of the radial direction of the positioning fixture 21 on the sliding block 2111 in a penetrating mode, two movable clamping blocks 2113 are arranged in the guide grooves 2112 in a sliding mode, clamping springs 2116 are horizontally welded between the two movable clamping blocks 2113 and the sliding block 2111, the parts, located outside the guide grooves 2112, of the movable clamping blocks 2113 are sequentially divided into clamping block portions 2114 and support block portions 2115 from top to bottom, and the support block portions 2115 protrude outwards relative to the clamping block portions 2114.

The positioning fixture 21 in this embodiment is an existing electric chuck, four positioning clamp blocks 211 are clamped by electric driving, two movable clamp blocks 2113 are arranged on the positioning clamp blocks 211 in a relatively sliding manner, a cylindrical tubular workpiece can be supported and clamped by the movable clamp blocks 2113 close to the inner side, and correspondingly, an inner support clamp can be carried out by the movable clamp blocks 2113 close to the outer side, because the machine tool provided by the invention is used for grinding cylindrical tubular workpieces with one type of structure, the workpiece has a certain wall thickness, in the actual clamping process, the clamp block portions 2114 in the movable clamp blocks 2113 are used for clamping and contacting the inner wall or the outer wall of the workpiece, the support block portions 2115 are used for supporting the bottom end of the workpiece, the workpiece is kept vertical by horizontally supporting the four support block portions 2115, and in the actual clamping operation, the outer support is taken as an example, according to the outer diameter of the workpiece, the positions of the four positioning clamping blocks 211 are adjusted in advance, so that the workpiece can be flatly placed on the four inner support block portions 2115, as the clamping is continued, the four inner support block portions 2114 are in contact with the outer wall of the workpiece, the clamping is continued, the inner movable clamping block 2113 is kept still, but the sliding block 2111 continues to slide in the direction close to the center of the positioning clamp 21, then the clamping spring 2116 connected with the inner movable clamping block 2113 contracts, the elastic force of the clamping spring clamps the workpiece through the movable clamping block 2113, and the workpiece is clamped internally, it is required to be noted that the protruding width of the support block portions 2115 relative to the support block portions 2114 is smaller than the wall thickness of the machined workpiece, namely, the machining interference cannot be formed, the clamping is performed, meanwhile, the four support block portions 2115 horizontally support the bottom end of the workpiece, so that the workpiece is higher than the table top of the positioning clamp 21 by a certain height, and the support block portions 2115 do not extend into the inner diameter range of the workpiece, when the inner wall is ground, the grinding tool can cover and grind the position close to the bottom end of the workpiece, so that no grinding dead angle exists; when the inner support is clamped, the clamping manner is substantially the same, which is not described herein.

The cylindrical tubular workpiece to be ground can be positioned and clamped through the positioning clamp 21, and after clamping is completed, the central shaft of the workpiece and the central shaft of the positioning clamp 21 are in a superposed state, so that the central shaft is positioned; when the inner wall of the workpiece is ground, the outer support clamping can be carried out, and correspondingly, when the outer wall of the workpiece is ground, the inner support clamping can be carried out.

As shown in fig. 4 and 8, the positioning and rotating device 2 further includes a rotary driving motor 22 and a timing belt 23; positioning fixture 21 includes that vertical rotation installs the rotating base 212 on base platform 1, and integrated into one piece has band pulley 213 on the rotating base 212, and rotary driving motor 22 welds on base platform 1 bottom surface and the output shaft welds on the rotating base 212 of one of them positioning fixture 21, and four band pulleys 213 pass through hold-in range 23 synchronous drive. When the cylindrical tubular workpiece is positioned and clamped in each of the four positioning fixtures 21, one of the positioning fixtures 21 connected with the rotating driving motor 22 is driven to rotate by starting the rotating driving motor 22, and the four positioning fixtures 21 drive the cylindrical tubular workpiece to rotate synchronously under the synchronous driving of the synchronous belt 23.

As shown in fig. 1, 3, 6 and 8, the lifting support frame 3 includes two lifters 31 fixed on the base table 1 and a lifting beam 32 horizontally fixed between the lifting ends of the two lifters 31; the two elevators 31 are arranged oppositely in a mirror image manner, and each elevator 31 comprises an elevator guide rail 311 welded on the base table 1, an elevator driving motor 312 fixed at the top end of the elevator guide rail 311 through a bolt, a lead screw 313 vertically rotatably installed on the elevator guide rail 311, and an elevator slider 314 vertically slidably installed along the elevator guide rail 311; the top end of the lead screw 313 is fixedly connected to the output shaft of the lifting driving motor 312, and the lifting slider 314 is in threaded connection with the lead screw 313. Electric turntables 321 are symmetrically arranged at two ends of the lifting beam 32 in the length direction, the rotating ends of the electric turntables 321 are fixed on the end parts of the lifting beam 32 through bolts, the base ends of the electric turntables 321 are fixed on the lifting slide blocks 314 at the same side position through bolts, and the electric turntables 321 horizontally rotate and output. The two electric rotating discs 321 are synchronously started to drive the lifting beam 32 to horizontally rotate. The lifting support frame 3 mainly drives the automatic grinding device 4 to lift, so that carry grinding can be performed in the axial range of the cylindrical tubular workpiece, specifically, by synchronously starting the two lifting driving motors 312, the lifting driving motors 312 drive the lead screw 313 to rotate, and then drive the lifting slide block 314 to ascend or descend along the lifting guide rail 311, so as to drive the lifting beam 32 to synchronously lift between the two lifting slide blocks 314.

As shown in fig. 1, 3, 6, 8, and 9, the automatic grinding apparatus 4 includes a center motor 41, a gear train transmission 42, a double universal joint 43, a slide guide 45, four slide bearings 46, a center distance adjustment mechanism 47, and four grinding shafts 44; the central motor 41 is fixed on the lifting beam 32 through bolts, and the output shaft of the central motor 41 is positioned in the distribution center of the four positioning clamps 21; the gear train transmission device 42 comprises a transmission case 421, the transmission case 421 comprises a box 4211 welded on the lifting beam 32 and in a disc shape and a case cover 4212 fixed at the bottom end of the box 4211 through bolts, a central gear 422 is fixedly installed on an output shaft of the central motor 41, the central gear 422 is located in the transmission case 421, four driven shafts 423 are uniformly distributed in the transmission case 421 around the circumference of the central gear 422, the driven shafts 423 are vertically and rotatably installed between the box 4211 and the case cover 4212 and penetrate through the case cover 4212, and driven gears 4231 meshed with the central gear 422 are fixed on the driven shafts 423; the sliding guide frame 45 comprises a sliding rail frame 452 and two fixing plates 451, the sliding rail frame 452 is in a cross structure, the two fixing plates 451 are welded on the lifting cross beam 32, four horizontal sliding rails 4521 are uniformly distributed on the sliding rail frame 452 around the circumference of the output shaft of the central motor 41, the guide directions of the horizontal sliding rails 4521 are arranged along the radial direction distributed on the circumference of the four positioning clamps 21, the two horizontal sliding rails 4521 which are opposite in position and parallel to the lifting cross beam 32 are welded between the two fixing plates 451, the four sliding bearings 46 are slidably mounted on the four horizontal sliding rails 4521 in a one-to-one correspondence manner, the four grinding shafts 44 are mounted on the four sliding bearings 46 in a one-to-one correspondence manner, and the grinding shafts 44 vertically penetrate through and are rotatably mounted on the sliding bearings 46 at corresponding positions; the four driven shafts 423 and the four grinding shafts 44 are arranged in a one-to-one correspondence manner, a double universal coupling 43 is connected between the driven shaft 423 and the grinding shaft 44 at the corresponding position, and the double universal coupling 43 comprises two universal joints 431 and a telescopic rod 432 fixedly connected between the two universal joints 431; one universal joint 431 is welded at the lower shaft end of the driven shaft 423, and the other universal joint 431 is welded at the top shaft end of the grinding shaft 44; the telescopic rod 432 comprises a spline sliding bush 4321 welded on one of the universal joints 431 and a spline sliding bush 4322 welded on the other universal joint 431; the splined sleeve rod 4322 is slidably mounted in the splined sliding sleeve 4321.

It should be noted that the bottom end of the grinding shaft 44 is provided with a mounting end capable of fixedly mounting a grinding tool, and the grinding tool may be a disk-shaped grinding tool such as a grinding wheel disk; the four grinding shafts 44 can be driven to synchronously rotate through the central motor 41, specifically, after the central motor 41 is started, the central gear 422 can be driven to rotate along with the output shaft, the central gear 422 drives the four driven gears 4231 to drive the four driven shafts 423 to synchronously rotate, the driven shafts 423 drive the grinding shafts 44 at the corresponding positions to rotate along with the driven shafts through the connected double universal couplings 43, and then the four grinding shafts 44 can be driven to synchronously rotate.

The center distance adjustment mechanism 47 is fitted to the rail frame 452 and is used for synchronous movement adjustment of the four grinding spindles 44. The central distance adjusting mechanism 47 comprises an electric push rod 471 and four connecting rods 472, and the four connecting rods 472 are correspondingly connected between the four double universal couplings 43 and the output end of the electric push rod 471 one by one; the output end of the electric push rod 471 is welded with a hinged end 4711, and a rotating bearing 4323 is rotatably sleeved on the spline sliding sleeve 4321; the two ends of the connecting rod 472 are hinged between the hinged end 4711 and the rotating bearing 4323.

The four grinding shafts 44 can be driven to move synchronously by the center distance adjusting mechanism 47, so as to adjust the distance between the grinding shafts 44 and the distribution centers of the four positioning clamps 21. When the cylindrical tubular workpiece to be processed is positioned and clamped by the positioning clamp 21, the central axis of the workpiece coincides with the central axis of the positioning clamp 21, that is, the distance between the central axis of the workpiece and the distribution center of the four positioning clamps 21 is fixed and definite. It should be noted that, in this embodiment, when the output rod of the electric push rod 471 is not extended, the distance from the grinding shaft 44 to the distribution center of the four positioning jigs 21 is the largest, and the central axis of the grinding shaft 44 coincides with the central axis of the positioning jig 21 at the corresponding position, when adjustment is performed, by activating the electric push rod 471, the output rod thereof is extended or retracted, and when extended, the output rod of the electric push rod 471 pulls the four spline sliding sleeves 4321 through the four connecting rods 472 one by one, so that the spline sliding sleeves 4322 are retracted into the spline sliding sleeves 4321, and the spline sleeves 4322 synchronously pull the sliding supports 46 through the connected universal joints 431, and the sliding supports 46 slide along the horizontal sliding rail 4521 in a direction approaching the center of the sliding rail frame 452, so that the grinding shaft 44 moves synchronously with the sliding supports 46, the distance from the grinding shaft 44 to the distribution center of the four positioning jigs 21 is gradually reduced, and conversely, when the output rod 471 is retracted, the distance from the grinding shaft 44 to the distribution center of the four positioning jigs 21 is gradually increased. It should be noted that, in the present embodiment, the stroke of the electric push rod 471 is sufficient, and as a prior art, the output stroke of the electric push rod 471 is precisely controllable.

According to the processing requirements of actual grinding, two cases of grinding the inner wall and the outer wall of the cylindrical tubular workpiece are specifically explained below. Note: the cylindrical tubular workpiece is hereinafter referred to as a workpiece.

When the inner wall of a workpiece needs to be ground, four workpieces to be machined are correspondingly placed on the four positioning clamps 21 one by one, and the positioning clamps 21 are used for externally supporting, clamping, positioning and fixing the workpieces; subsequently, the output rod of the electric push rod 471 is completely contracted, the four grinding shafts 44 are just aligned to the four workpieces one by one, tool setting is performed when the central motor 41 and the rotary driving motor 22 are not started, specifically, the whole automatic grinding device 4 is driven to descend along with the lifting beam 32 by starting the two elevators 31, so that the grinding shafts 44 drive the grinding tool to extend into the inner cavity of the workpiece, then, the positions of the four grinding shafts 44 are synchronously adjusted by the central distance adjusting mechanism 47, so that the edge of the grinding tool is attached to the inner wall of the workpiece to complete tool setting, then, the four workpieces are driven to be in a rotary state by starting the rotary driving motor 22, the four grinding tools are driven to be in a rotary grinding state by starting the central motor 41, so that the inner wall of the workpiece can be ground by the grinding tool, in the grinding process, the two elevators 31 are used for axial carry processing, radial carry processing is performed by the central distance adjusting mechanism 47, and accordingly, inner wall grinding processing of the four workpieces can be synchronously completed. Since the grinding shaft 44 is moved and adjusted from a position where its center axis coincides with the center axis of the workpiece, and the radius of the standard grinding tool is known, the distance by which the tool is carried in the grinding process after the tool setting is completed is known.

When the outer wall of the workpiece needs to be ground, the grinding of the outer wall is basically the same as the grinding of the inner wall, wherein the difference is that the workpiece is internally supported, positioned, clamped and fixed through a positioning fixture 21, and a grinding tool needs to be attached to the outer wall of the workpiece during tool setting.

The circuits and control methods involved in the present invention are all the prior art, and are not described herein in any greater detail.

It should be understood by those skilled in the art that the modifications can be implemented by combining the prior art and the above embodiments, and the detailed description is omitted here. Such variations do not affect the essence of the present invention and are not described herein.

The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in which devices and structures not described in detail are understood to be implemented in a manner that is conventional in the art; it will be understood by those skilled in the art that various changes and modifications may be made, or equivalents may be substituted, without departing from the scope of the invention without departing from the essential scope thereof. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.

Claims

1. The utility model provides a novel vertical grinding machine, its characterized in that: the grinding machine comprises a base table (1), a positioning rotating device (2) assembled on the base table (1), a lifting support frame (3) fixed on the base table (1) and an automatic grinding device (4) assembled at the lifting movable end of the lifting support frame (3); wherein:

the positioning and rotating device (2) comprises a plurality of positioning clamps (21) which are uniformly distributed on the circumference and are vertically and rotationally driven to be installed on the base table (1); the automatic grinding device (4) comprises a plurality of grinding shafts (44) which are arranged in one-to-one correspondence with the positioning clamps (21) and used for fixing a grinding tool, the grinding shafts (44) are vertically and rotatably arranged, the grinding shafts (44) are uniformly distributed around the distribution center circumference of the positioning clamps (21), and the grinding shafts (44) are synchronously movable and adjustable in the radial direction of the circumference distribution of the positioning clamps (21);

the positioning fixture is characterized in that a plurality of positioning clamping blocks (211) are uniformly distributed on the upper circumference of the positioning fixture (21), each positioning clamping block (211) comprises a sliding block (2111) which slides along the radial direction of the positioning fixture (21), guide grooves (2112) are formed in the sliding block (2111) in a penetrating mode on two opposite radial sides of the positioning fixture (21), two movable clamping blocks (2113) are arranged in the guide grooves (2112) in a relatively sliding mode, each movable clamping block (2113) and the corresponding sliding block (2111) are horizontally connected with a clamping spring (2116), the part, located outside the guide grooves (2112), of each movable clamping block (2113) is sequentially divided into a clamping block part (2114) and a supporting block part (2115) from top to bottom, and the supporting block part (2115) protrudes outwards relative to the clamping block part (2114).

2. A novel vertical grinding machine as claimed in claim 1, wherein: the automatic grinding device (4) further comprises a central motor (41), a gear train transmission device (42), a double universal coupling (43), a sliding guide frame (45), a sliding support (46) and a central distance adjusting mechanism (47); the central motor (41), the gear train transmission device (42) and the sliding guide frame (45) are all fixed at the lifting movable end of the lifting support frame (3); the output shaft of the central motor (41) is located in the distribution center of the positioning clamps (21), the gear train transmission device (42) is input from the output shaft of the central motor (41) and is dispersedly provided with a plurality of output ends which are in one-to-one correspondence with the grinding shafts (44), a double universal coupling (43) is connected between the output end of the gear train transmission device (42) and the grinding shafts (44) at corresponding positions, the sliding guide frame (45) comprises a sliding rail frame (452), a plurality of horizontal sliding rails (4521) which are in one-to-one correspondence with the grinding shafts (44) are uniformly distributed on the sliding rail frame (452) around the circumference of the output shaft of the central motor (41), the sliding bearings (46) are correspondingly and slidably mounted on each horizontal sliding rail (4521), and the grinding shafts (44) vertically penetrate through and are rotatably mounted on the sliding bearings (46) at corresponding positions; the center distance adjusting mechanism (47) is assembled on the slide rail frame (452) and is used for synchronously adjusting the movement of the grinding shafts (44).

3. A novel vertical grinding machine as claimed in claim 2, wherein: the double universal coupling (43) comprises two universal joints (431) and a telescopic rod (432) fixedly connected between the two universal joints (431); one of the universal joints (431) is fixedly connected to the output end of the gear train transmission device (42), and the other universal joint (431) is fixedly connected to the top shaft end of the grinding shaft (44).

4. A novel vertical grinding machine as claimed in claim 3, wherein: the central distance adjusting mechanism (47) comprises an electric push rod (471) and a plurality of connecting rods (472), and the connecting rods (472) are connected between the double universal couplings (43) and the output end of the electric push rod (471) in a one-to-one correspondence manner; an output end of the electric push rod (471) is fixed with a hinged end (4711), and the telescopic rod (432) comprises a spline sliding sleeve (4321) fixed on one of the universal joints (431) and a spline sleeve rod (4322) fixedly connected on the other universal joint (431); the spline sleeve rod (4322) is slidably arranged in the spline sliding sleeve (4321), and a rotating bearing (4323) in rotating fit is arranged on the spline sliding sleeve (4321); two ends of the connecting rod (472) are hinged between the hinged end head (4711) and the rotating bearing (4323).

5. A novel vertical grinding machine as claimed in claim 3, wherein: train transmission (42) is including fixing transmission case (421) of lift support frame (3) lift expansion end, fixed mounting has sun gear (422) on central motor (41) output shaft, sun gear (422) are located in transmission case (421), surround in transmission case (421) sun gear (422) circumference evenly distributed has driven shaft (423) of a plurality of vertical rotations installations, and is a plurality of driven shaft (423) and a plurality of grinding axle (44) one-to-one sets up, be fixed with on driven shaft (423) with driven gear (4231) of sun gear (422) meshing, one of them in two universal coupling (43) universal joint (431) and corresponding position driven shaft (423) axle head fixed connection.

6. A novel vertical grinding machine as claimed in claim 5, wherein: the lifting support frame (3) comprises two lifters (31) fixed on the base platform (1) and a lifting cross beam (32) horizontally fixed between the lifting ends of the two lifters (31); the central motor (41), the transmission case (421) and the sliding guide frame (45) are all fixed on the lifting beam (32).

7. A novel vertical grinding machine as claimed in claim 1, wherein: the positioning and rotating device (2) further comprises a rotary driving motor (22) and a synchronous belt (23); positioning fixture (21) include that vertical rotation is installed rotating base (212) on base platform (1), be fixed with band pulley (213) on rotating base (212), rotation driving motor (22) are fixed base platform (1) is gone up and output shaft fixed connection is in one of them on rotating base (212) of positioning fixture (21), it is a plurality of band pulley (213) pass through hold-in range (23) synchronous drive.

8. A novel vertical grinding machine as claimed in claim 6, wherein: the length direction both ends symmetry fixed mounting of lifting beam (32) has electric turntable (321), electric turntable (321) are fixed in the homonymy position the lift end of lift (31), electric turntable (321) level rotates the output.