CN114559328B

CN114559328B - Multi-workbench grinding center

Info

Publication number: CN114559328B
Application number: CN202111564973.4A
Authority: CN
Inventors: 何亮; 黄振宇; 董宏; 宋汝贲; 傅正勇
Original assignee: Zhejiang Hangji Co ltd
Current assignee: Zhejiang Hangji Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2023-04-11
Anticipated expiration: 2041-12-20
Also published as: CN114559328A

Abstract

The invention discloses a multi-workbench grinding center, and aims to overcome the defects that a grinding head needs to be standby and the machining efficiency is low when a conventional grinding center loads and unloads materials. The invention comprises a grinding table which can freely move in the length direction, a dresser, a plurality of working tables which are arranged along the length direction and used for positioning workpieces, a tool changing device, the dresser, the working tables and the tool changing device are arranged along the length direction. This application has a plurality of movable workstations, can alternate processing, has improved machining efficiency for the production beat, through adopting the mode of arranging the workstation along length direction, area occupied is little, does not need great actuating mechanism.

Description

Multi-workbench grinding center

Technical Field

The invention relates to the field of machining, in particular to a multi-workbench grinding center.

Background

The existing powerful forming grinding machine is in the traditional single-workbench T-shaped layout structure, the waiting time for loading and unloading is long after the grinding of a workpiece is finished, and the efficiency of batch production is greatly limited. And the conventional T-shaped layout occupies a large area relatively, which is not beneficial to the arrangement of double work tables, most of the conventional T-shaped layout adopts a rotary exchange work table mode to carry out rotary exchange, the rotary exchange work table has complex structure, large rotary volume and heavy weight, needs larger driving mechanisms and protective measures, and needs to change the conventional feeding and discharging mode and clamping mechanism, is not beneficial to the improvement of production efficiency and the increase of cost, is not beneficial to the arrangement of automatically replacing grinding wheel mechanisms, is difficult to be connected with a production line, is difficult to realize the production and automation of flexible units, can not simultaneously lift workpieces up and down when the grinding wheel is replaced, and further reduces the production efficiency of a machine tool.

This application aims at going up unloading, changing the painful point that the bistrique needs other parts to wait to current grinding machine, provides a grinding center with many workstations, can make full use of space, realizes the automatic exchange grinding, goes up unloading in the grinding, realizes the grinding of no interval to this provides work efficiency.

Disclosure of Invention

The invention overcomes the defects that the grinding heads need to stand by and the machining efficiency is low when the existing grinding center feeds and discharges materials, and provides the multi-workbench grinding center which can realize gapless machining, supports feeding and discharging while machining and replacing the grinding heads, improves the machining production efficiency and is beneficial to realizing flexible unit production and automation.

In order to solve the technical problems, the invention adopts the following technical scheme:

a multi-table grinding center comprises

A grinding table which can freely move in the length direction;

a finisher;

a plurality of work tables arranged along the length direction for positioning the workpiece;

a tool changing device;

the dresser, the work table, and the tool changer are arranged in the length direction.

The grinding head can freely move back and forth in the length direction through the carriage and the transmission pair; the tool changing device is used for changing the grinding head; the dresser is arranged at one end of the lathe bed and used for modifying the grinding head. The plurality of working tables are arranged along the length direction, and when one working table is subjected to machining of the grinding table, a workpiece on the other working table can be loaded and unloaded. After the workbench which finishes machining is withdrawn, the grinding head moves to another workbench along the length direction to be machined while feeding and discharging are carried out, and the reciprocating circulation can achieve higher production efficiency. The grinding head can carry out dressing and tool changing in the same way.

Preferably, the number of stages is two.

Preferably, the grinding table is provided with an upright which is movable in the width direction, and the upright is provided with a grinding head which is movable in the height direction. The upright post and the grinding head respectively realize the movement of height and width by utilizing the planker, the linear guide rail in the corresponding direction and the transmission structure. The grinding head can move along three dimensions in a three-dimensional space, and flexible production is met.

Preferably, both the dresser and the table are movable in the width direction. One workbench moves towards the grinding head direction until the end part reaches a working position, the other workbench moves to a position far away from the grinding head to reach a feeding and discharging position, and the two work benches are fed in and discharged out at the same time; the dresser moves towards the grinding head direction, and then is in the same plane with the grinding head, and the dresser can be dressed when the grinding head moves to the interference position, and when the dresser moves towards the direction far away from the grinding head, the dresser does not contact the grinding head, so that cutter collision is avoided.

Preferably, the tool changing device is arranged at one end of the grinding center in the length direction and comprises a tool changing plate freely moving in the length direction and the width direction and a grinding wheel warehouse disc rotatably connected to a grinding center lathe bed, the tool changing plate is strip-shaped, the central line of the tool changing plate is arranged in the width direction and rotates along the central line, and mounting grooves matched with grinding wheels are formed in two ends of the tool changing plate.

The tool changing plate can freely move along the width direction and the length direction, the mounting groove is inserted into the grinding head pivot after the tool changing plate and the upright post move to corresponding positions, then the tool changing plate rotates 180 degrees, and the grinding head to be put in storage is placed in the grinding wheel storage disc by an external manipulator.

Preferably, the mounting groove is larger outside and smaller inside the opening position. The structure with the large outer part and the small inner part is used for guiding the pivot of the grinding head.

Preferably, the dresser includes a single point dresser and a roller dresser.

Preferably, the workbench is mounted on a machine body of the grinding center through a linear guide rail, the workbench is driven by a screw rod slide block pair, the screw rods corresponding to the two workbenches are in transmission connection through a transition shaft, the thread directions of the two screw rods are opposite, and one screw rod corresponding to the two workbenches is in transmission connection with a driving motor.

The structure is arranged for achieving the purpose that two working tables are arranged in one mode, power is saved, cutter collision is avoided, specifically, a bevel gear is fixedly connected to one lead screw, the end portion of the lead screw is connected with a driving motor through a coupler, the bevel gear is meshed with the bevel gear on the transition shaft, and the transition shaft is in meshed transmission connection with the other lead screw through the bevel gear. The bevel gears have the same number of teeth. The two screw rods have the same rotating speed, and the threads of the screw rods are opposite, so that the two working tables move forward and backward to avoid cutter collision.

Compared with the prior art, the invention has the beneficial effects that: (1) The movable working tables are arranged, so that alternate machining can be realized, the machining efficiency is improved, and the production beat is accelerated; (2) The workbench is arranged along the length direction, so that the occupied area is small, and a large driving mechanism is not needed.

Drawings

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

FIG. 2 is a plan view of embodiment 2;

FIG. 3 is a schematic view of the present invention;

FIG. 4 is a schematic view of the locking hook of the present invention;

in the figure:

the grinding table comprises a grinding table 1, an upright post 2, a grinding head 3, a speed reducer 4, a disc 5, a single-point dresser 6, a gear roller 7, a roller dresser 8, a workbench 9, a tool magazine fixing plate 10, a linear guide rail 11, a tool changing plate 12, a grinding wheel magazine disc 13, a mounting groove 14, a lead screw 15, a motor 16, a transition shaft 17, a driving motor 18, a bevel gear 19, a locking chute 20, a locking guide rod 21, a locking positive hook 22, an interference plate 23, a locking reverse hook 24, a sleeve 25, a spring 26, a guide wedge surface 27, an inclined surface 28, a butting plate 29 and an elastic piece 30.

Detailed Description

The present disclosure is further described with reference to the following drawings and examples.

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

In the present disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, are only terms of relationships determined for convenience in describing structural relationships of the components or elements of the present disclosure, do not refer to any components or elements of the present disclosure, and are not to be construed as limiting the present disclosure.

In the present disclosure, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present disclosure can be determined on a case-by-case basis by persons skilled in the relevant art or technicians, and are not to be construed as limitations of the present disclosure.

Example 1:

as shown in fig. 1, a multi-table 9 grinding center has:

a grinding table 1 which can move freely in the length direction, wherein an upright post 2 which can move freely in the width direction is arranged on the grinding table 1, and a grinding head 3 which can move freely in the height direction is arranged on the upright post 2;

the dresser comprises a disc 5 single-point dresser 6 and a roller dresser 8;

2 work stations 9 for positioning a workpiece, which are arranged in the longitudinal direction;

the tool changing device is arranged at one end of the grinding center in the length direction and comprises a tool changing plate 12 freely moving in the length direction and the width direction and a grinding wheel warehouse disc 13 rotatably connected to a grinding center lathe bed, the tool changing plate 12 is strip-shaped, the central line of the tool changing plate 12 is arranged in the width direction and rotates along the central line, mounting grooves 14 matched with grinding wheels are formed in two ends of the tool changing plate 12, and the mounting grooves 14 are large outside and small inside the opening position;

the dresser, the table 9 and the tool changer are arranged in the length direction, and both the dresser and the table 9 can freely move in the width direction.

In particular, the method comprises the following steps of,

the grinding table 1 is mounted on a linear guide rail 11 along the length direction through a dragging plate and moves through a screw rod sliding block structure, and a screw rod 15 is connected with a motor 16. In a similar way, the upright post 2 is also connected on the grinding table 1 through the planker and the screw rod slide block, and the grinding head 3 is connected on the upright post 2 through the planker and the screw rod slide block.

The disc 5 single-point trimmer 6 and the roller trimmer 8 are integrated on a carriage and connected on the lathe bed through a screw rod sliding block. Disc 5 single point trimmer 6 comprises a motor 16, reducer 4 and disc 5 connected to the output shaft of reducer 4. Roller trimmer 8 differs from gear roller 7 on the output shaft.

The two tables 9 are movable in the width direction by a linear guide 11, a screw slider, and a motor 16.

The rightmost side of the lathe bed is provided with a tool magazine fixing plate 10, the tool magazine fixing plate 10 is provided with a linear guide rail 11 along the length direction, a dragging plate and a lead screw sliding block pair realize the movement along the length direction, the dragging plate is provided with the linear guide rail 11 along the width direction, the linear guide rail 11 is provided with another dragging plate, the lead screw sliding block pair and a motor 16 in a sliding manner, and the dragging plate is provided with a tool magazine support. The tool magazine support is rotatably connected with an output shaft, the output shaft is connected with a motor 16 in a transmission mode, the other end of the output shaft is fixedly provided with a tool changing plate 12, and the motor 16 drives the tool changing plate 12 to rotate. The tool magazine fixing plate 10 is also provided with a grinding wheel magazine disc 13.

Example 2:

this example differs from example 1 in that:

as shown in fig. 2, the driving method of the table 9 is different from that of embodiment 1, the table 9 is mounted on the machine body of the grinding center through a linear guide rail 11, the table 9 is driven by a screw slider pair, the screws 15 corresponding to the two tables 9 are in transmission connection through a transition shaft 17, the thread directions of the screws 15 are opposite, and one screw 15 corresponding to the two tables 9 is in transmission connection with a driving motor 18. The screw rod is in transmission connection with the transition shaft through a bevel gear 19.

Example 3:

as shown in fig. 3 and 4, the present embodiment further includes, in addition to embodiment 1:

be equipped with retaining member in turn between two workstations 9, retaining member is including setting up the locking spout 20 between two workstations 9 in turn, be equipped with locking guide arm 21 on the locking spout 20, locking guide arm 21 both ends are stretched out locking spout 20 and are equipped with locking positive hook 22 and interference board 23 respectively at both ends, workstation 9 corresponds locking positive hook 22 and is equipped with locking anti-hook 24, locking guide arm 21 is at the sleeve 25 of locking the one end fixed connection's of positive hook 22 vertical setting, locking positive hook 22 vertical cartridge is worn out in sleeve 25 and its both ends, be equipped with spring 26 between locking positive hook 22 and the sleeve 25, spring 26 drive locking positive hook 22 moves down, locking positive hook 22 is the direction wedge face 27 to the face of facing to locking anti-hook 24, the bottom of locking positive hook 22 is equipped with inclined plane 28. The locking positive hooks 22 are symmetrical relative to the locking guide rod 21, and the locking reverse hooks 24 on the two working tables 9 are respectively contacted with the left and right symmetrical sides of the locking positive hooks 22. The bed is provided with an abutment plate 29 at one end of the interference plate 223 and an elastic member 30 at the back of the interference plate 23.

The abutment plate 29 is provided on the side closer to the grinding heads 3 in the bed width direction.

The structural arrangement aims at that due to the fact that the two working tables 9 are provided with the independent feeding mechanisms, under the condition of misoperation, the two working tables 9 can appear on one side close to the grinding head 3 at the same time, when a workpiece which is separated from machining under the control of a preset program of the grinding head 3 can be slightly subjected to tool changing or trimming at a higher speed, a grinding machine at the moment can collide with the workpiece on the working table 9 which appears by mistake. Therefore, the application also aims to realize the alternative locking piece which is suitable for multiple work tables 9 and avoids collision of the cutters, so that the work tables 9 in the feeding and discharging positions can be prevented from entering the processing positions when the work tables 9 in the processing positions are not separated.

The locking process of the locking piece comprises the following steps:

the two work stations 9 are opposite each other, and when the locking counter hook 24 in a machining position contacts the guide wedge surface 27, the interference plate 23 also contacts the abutment plate 29. The table 9 moving to the feeding position continues to move, the locking positive hook 22 and the locking reverse hook 24 are moved upward by the guide wedge surface 27 against the force of the spring 26, the locking positive hook 22 and the locking reverse hook 24 are engaged, and the table 9 is attached to the abutting plate 29 and the interference plate 23 against the elastic force of the elastic member 30. The locking state is maintained, and the locking positive hook 22 and the locking reverse hook 24 cannot be disengaged unless the working table 9 in the machining position is disengaged.

Unlocking process of the locking piece:

when the workbench 9 at the processing position is actively separated, the locking guide rod 21 moves along the locking chute 20 and the bevel gear 19 along the loading and unloading position under the action of the spring 26, the bottom of the locking positive hook 22 rises under the action of the inclined surface 28 and is separated from the locking reverse hook 24, and the workbench 9 at the loading and unloading position can be separated at the moment.

The retaining member has played the guard action of anticollision to mechanical structure avoids because the mistake of hitting the sword that the programming mistake leads to, has just reduced because the possible inefficacy mode that the overall arrangement error of two workstations 9 brought in the design phase, has improved the reliability of device.

The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to be limiting in any way, and other variations and modifications are possible without departing from the scope of the invention as set forth in the appended claims.

Claims

1. A multi-workbench grinding center is characterized by comprising

A grinding table which can freely move in the length direction;

a finisher;

two work tables arranged along the length direction for positioning the workpiece;

a tool changing device;

the dresser, the workbench and the tool changing device are arranged along the length direction;

the dresser and the workbench can freely move in the width direction;

an alternate locking part is arranged between the two working tables and comprises a locking sliding groove arranged between the two working tables, a locking guide rod is arranged on the locking sliding groove, two ends of the locking guide rod extend out of the locking sliding groove, a locking positive hook and an interference plate are respectively arranged at two ends of the locking guide rod, the working tables are provided with locking reverse hooks corresponding to the locking positive hooks, the locking guide rod is fixedly connected with a vertically arranged sleeve at one end of the locking positive hook, the locking positive hook is vertically inserted into the sleeve, two ends of the locking positive hook penetrate out of the sleeve, a spring is arranged between the locking positive hook and the sleeve and drives the locking positive hook to move downwards, the facing surface of the locking positive hook facing the locking reverse hook is a guide wedge surface, and the bottom of the locking positive hook is provided with an inclined surface; the locking positive hooks are symmetrical relative to the locking guide rod, and the locking reverse hooks on the two working tables are respectively contacted with the left and right symmetrical sides of the locking positive hooks; the bed body is equipped with the butt joint board at interference board one end, and the back of interfering the board is equipped with the elastic component.

2. A multi-table grinding center according to claim 1, wherein the grinding table is provided with an upright which is movable in the width direction, and the upright is provided with a grinding head which is movable in the height direction.

3. The multi-workbench grinding center of claim 1, wherein the tool changer is disposed at one end of the grinding center in the length direction, the tool changer comprises a tool changing plate which can move freely in the length and width directions and a grinding wheel magazine which is rotatably connected to the machine body of the grinding center, the tool changing plate is in a strip shape, the center line of the tool changing plate is arranged in the width direction and rotates along the center line, and mounting grooves matched with the grinding wheel are disposed at both ends of the tool changing plate.

4. A multi-table grinding center according to claim 3 wherein the mounting groove is larger outside and smaller inside at the open position.

5. A multi-table grinding center according to claim 1 or 2, wherein the dresser includes a single point dresser and a roller dresser.

6. The multi-workbench grinding center of claim 1, wherein the workbench is mounted on the machine body of the grinding center by linear guide rails, the workbench is driven by a screw-rod slider pair, the corresponding screws of the two workbenches are in transmission connection through a transition shaft, the thread directions of the two screws are opposite, and one screw corresponding to the two workbenches is in transmission connection with a driving motor.