CN115338666A

CN115338666A - Combined tool changing device for bearing raceway variable-curvature curved surface machining

Info

Publication number: CN115338666A
Application number: CN202110514387.2A
Authority: CN
Inventors: 赵彦玲; 韩文广
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2022-11-15

Abstract

The invention relates to a combined tool changer for processing a bearing raceway variable-curvature curved surface, which comprises a fixing component, an adjusting disc component and a rotary tool rest component, wherein the fixing component adopts a bolt structure, the fixing component can be fixed on rotary main shafts with different sizes through bolts, the adjusting disc component adopts a slider-crank mechanism, the position of a through hole in a slider can be adjusted through an adjusting bolt, the rotary tool rest component adopts a cylindrical slider for connection, and the rotation angle and the position of a tool rest can be manually rotated. The device has the limiting function, can greatly simplify the operation of aligning the cutter and the rotating shaft, has simple structure and is suitable for rotating shafts with different sizes in a certain range.

Description

Combined tool changing device for processing variable-curvature curved surface of bearing raceway

Technical Field

The invention relates to a combined tool changing device for processing a bearing raceway variable-curvature curved surface, which is suitable for the problem of manual tool changing in the processing process of a bearing special curved surface and relates to a changing mode of a tool for processing the bearing raceway variable-curvature curved surface.

Background

With the continuous development of bearing technology, the traditional bearing can not meet the actual production requirement, the development of a novel bearing needs to be solved urgently, and the processing tool is changed accordingly. The invention provides a tool changer for reprocessing a special curved surface on an original channel of a bearing, which realizes quick tool changing and accurate positioning of a tool, improves the working efficiency in processing, can relieve the problem of difficult tool changing, has simple structure and low cost and is easy to meet the processing requirements of a common production workshop.

Disclosure of Invention

The invention provides a combined tool changer for processing a variable-curvature curved surface of a bearing raceway, which aims to solve the problem that the tool changer is difficult to change when the tool changer is processed on the bearing raceway and the special processing requirement of the variable-curvature curved surface is met.

In order to achieve the purpose, the invention adopts the following basic technical scheme:

the combined tool changer for processing the variable-curvature curved surface of the bearing raceway comprises a fixing assembly, an adjusting disc assembly, a rotary tool rest assembly and rod components, wherein the fixing assembly is fixed on a rotating shaft shell through four screws and is linked with a connecting rod, the connecting rod is fixedly linked with the adjusting disc assembly through two screws, and the rotary tool rest is placed on the adjusting disc assembly;

further, the fixing assembly may be fixed to rotating shaft housings of different sizes by screws;

furthermore, the adjusting disc assembly can change the position of the adjusting disc assembly by rotating a connecting rod which links the fixing assembly and the adjusting disc assembly, so that the position of the tool rest is realized;

furthermore, the rotary tool rest can be moved and rotated manually, so that quick tool changing is realized, and the axis of the tool rest at the rightmost end of the rotary tool rest is superposed with the axis of the rotating shaft;

the invention can place four cutters at most, realize the quick positioning of the cutter, achieve the purpose of saving time, raise production efficiency, meanwhile, the invention is simple in construction, the apparatus is easy to maintain, its cost is lower.

Drawings

FIG. 1 is a schematic view of the overall structure of the combined tool changer for processing a variable curvature curved surface of a bearing raceway according to the present invention;

FIG. 2 is a schematic structural view of a connecting rod according to the present invention;

FIG. 3 is a schematic view of the structure of the adjusting disk in the direction of a;

FIG. 4 is a schematic view of the structure of the adjusting disk in the direction of b;

FIG. 5 is a schematic view of the structure of the rotary cutter holder according to the present invention;

fig. 6 is a schematic view of the structure of the rotary tool post of the present invention in the direction of b.

Wherein: 101 a rotating shaft housing; 102 a rotating shaft; 201 securing means a;202 fixing device b;203 fixing bolt a;204 fixing bolt b;205 fixing the bolt c;206 fixing bolt d;301 connecting rod a;302 link b;303 connecting rod sliding blocks; 401 adjusting the direction of the disc a; 402 a cross slide rail a;403 cylindrical slide rails; 404 a cross slide rail b;405 a stop screw; 406 a slider a;407 crank link a;408 a crank link b;409 a crank connecting rod c;410 a slide block b;411 a slide block limiting groove a;412 a slide block limiting groove b;413 adjusting the direction of the disc b; 501 rotating a tool post in a direction; 502 tool holder bore a;503 tool a;504 cross slide groove b;505 tool b;506 cross slide groove a;507 rotating the tool post in the direction of b.

Detailed Description

In order to further explain the technical scheme of the invention, the invention is further explained by combining the attached drawings.

Referring to fig. 1 to 6, the combined tool changer for machining the variable curvature curved surface of the bearing raceway comprises a fixed assembly, an adjusting disc assembly and a rotating tool rest assembly.

The fixing assembly comprises a fixing device a, a fixing device b, a fixing bolt a, a fixing bolt b, a fixing bolt c and a fixing bolt d, and the fixing devices a and b can be fixed on a rotating shaft shell in any size within a certain range by screwing the four fixing bolts.

The adjusting disc assembly comprises an adjusting disc, a cross slide rail a, a cylindrical slide rail, a cross slide rail b, a limiting screw, a sliding block a, a crank connecting rod b, a crank connecting rod c, a sliding block b, a sliding block limiting groove a and a sliding block limiting groove b, wherein the sliding block limiting groove a and the sliding block limiting groove b are machined on the adjusting disc, the sliding block a and the sliding block b are respectively installed in the sliding block limiting groove a and the sliding block limiting groove b, the sliding block a and the sliding block b are respectively in pin connection with the crank connecting rod a and the crank connecting rod c, the crank connecting rod a and the crank connecting rod c are in pin connection with the crank connecting rod b, the crank connecting rod b is in pin connection with the adjusting disc, the adjusting disc is fixedly connected with the cross slide rail a, the cross slide rail a is fixedly connected with the cylindrical slide rail, the cylindrical slide rail is fixedly connected with the cross slide rail b, and the top end of the cross slide rail b is provided with a threaded hole which is in threaded connection with the limiting screw.

The rotary tool rest assembly comprises a rotary tool rest, tool rest holes a, tools a, cross slide rail grooves b, tools b and cross slide rail grooves a, four tool rest holes are machined in the rotary tool rest, the tools a are placed in the tool rest holes a, and the tool rest holes a are in sliding fit with the tools a.

A cutter mounting process: moving the rotating shaft back to a safe area along the axial direction, when the needle rotating connecting rod b reaches the limiting position of the fixing device by 90 degrees, moving the rotating tool rest forward along the axial direction to the cylindrical slide rail, rotating the rotating tool rest clockwise by 90 degrees, 180 degrees, 270 degrees or 360 degrees, rotating the rotating angle according to the position of the tool a to enable the tool a to be positioned right and left of the horizontal position, moving the tool a forward along the cross slide rail b to enable the top end of the rotating tool rest to be overlapped with the limiting screw, picking up the tool a through an automatic picking-up fixture on the rotating shaft, and returning the rotating tool rest along the original path to enable the cross slide rail groove a to be overlapped with the cross slide rail a. And rotating the connecting rod b by 90 degrees anticlockwise to finish the step of installing the cutter.

A tool changing process: the rotating shaft is axially retreated to a safe area, the connecting rod b is rotated clockwise by 90 degrees to reach the limiting position of the fixing device, the rotating tool rest is axially moved forwards to the cylindrical slide rail, the rotating tool rest is rotated clockwise by 90 degrees, 180 degrees, 270 degrees or 360 degrees, the rotating angle is rotated according to the position of the tool rest a, the tool rest a is positioned right and left in the horizontal position and moves forwards along the cross-shaped slide rail b, the top end of the rotating tool rest is overlapped with the limiting screw, the tool a is released through an automatic picking clamp on the rotating shaft, the rotating tool rest is retreated along the original path at the moment, the rotating tool rest is positioned on the cylindrical slide rail, the rotating tool rest is rotated, the tool b is positioned right and horizontal, the rotating tool rest is moved forwards along the cross-shaped slide rail b, the top end of the rotating tool rest is overlapped with the limiting screw, and the rotating tool rest is retreated along the original path after the tool b is connected through the automatic picking clamp on the rotating shaft, so that the cross-shaped slide rail groove a is overlapped with the cross-shaped slide rail a. And rotating the connecting rod b by 90 degrees anticlockwise to finish the tool changing step.

Claims

1. A processing combination formula toolchanger for bearing raceway variable curvature curved surface, including fixed subassembly, adjusting disk subassembly, rotatory tool rest subassembly and each pole part, its characterized in that: the rotating shaft shell (101) is in bolted connection with the fixing device a (201) and the fixing device b (202), the fixing device a (201) and the fixing device b (202) can be installed on rotating shafts with different sizes, the fixing device a (201) and the fixing device b (202) are respectively connected with the connecting rod a (301) and the connecting rod b (302) in a rotating pair mode, the connecting rod a (301) and the connecting rod b (302) are in bolted connection with the adjusting disc (401), and the adjusting disc (401) is in sliding block connection with the rotating tool rest (501).

2. A tool changing assembly according to claim 1, wherein: the connecting rod a (301) is fixedly connected with the connecting rod sliding block (303), and the rotating angles of the connecting rod a (301) and the connecting rod b (302) are limited by the matching of the connecting rod sliding block (303) and the fixing device a (201), so that the connecting rod a and the connecting rod b rotate for 90 degrees.

3. A combined tool changer according to claim 1, characterized in that: the connecting rod a (301), the connecting rod b (302) and the adjusting disc (401) are connected through bolts, the crank connecting rod b (408) is rotated to drive the sliding block a (403) and the sliding block b (404) to move, through hole shafts of the sliding block a (403) and the sliding block b (404) are respectively overlapped with hole shafts of the connecting rod a (301) and the connecting rod b (302), the device can be accurately installed, and the sliding block a (403) and the sliding block b (404) are respectively limited through the sliding block limiting groove a (411) and the sliding block limiting groove b (412).

4. A tool changing assembly according to claim 1, wherein: the rotary knife rest (501) can slide and rotate on the adjusting disc (401), the cross slide rail groove a (506) is completely overlapped with the cross slide rail a (402), the rotary knife rest (501) is fixed in a static mode, the rotary knife rest (501) moves to the cylindrical slide rail (403), the rotary knife rest (501) rotates, the cross slide rail groove b (504) is overlapped with the cross slide rail b (404), the rotary knife rest (501) slides directionally, the rotary knife rest (501) is overlapped with the limiting screw (405), and the rotary knife rest (501) is axially positioned.