CN210232426U

CN210232426U - Clamp device capable of rotating by 360 degrees

Info

Publication number: CN210232426U
Application number: CN201921048817.0U
Authority: CN
Inventors: Daoxuan Lin; 林道宣
Original assignee: DALIAN SHENTONG ELECTRIC CO LTD
Current assignee: DALIAN SHENTONG ELECTRIC CO LTD
Priority date: 2019-07-05
Filing date: 2019-07-05
Publication date: 2020-04-03
Anticipated expiration: 2029-07-05

Abstract

The embodiment of the utility model discloses a fixture device capable of rotating 360 degrees, which comprises a control console and a fixture, and is characterized in that the control console is provided with a numerical control workbench and a numerical control dividing head which is arranged on the numerical control workbench and can rotate 360 degrees; the fixture comprises a fixture body and a fixture pressing plate, wherein the fixture body is arranged on the numerical control dividing head and can rotate synchronously along with the numerical control dividing head, and the fixture pressing plate is matched with the fixture body and used for fixing a workpiece to be machined. The numerical control dividing head is a dividing head with a servo motor and can rotate 360 degrees under the driving of the servo motor. The utility model discloses can effectively improve the machining precision and the efficiency of bent axle.

Description

Clamp device capable of rotating by 360 degrees

Technical Field

The utility model relates to a hoist auxiliary assembly technical field especially relates to a fixture device that can 360 degrees rotations.

Background

A crank shaft part is arranged in a control mechanism of a linkage table produced by our company, the part needs to be processed on three surfaces (A surface, B surface and C surface), central lines of three processing parts need to be overlapped according to design requirements, and great difficulty is brought to processing due to the complex shape of a workpiece. Because the processes of processing are many, the existing fixture is used for processing on a lathe and then is transferred to an end milling machine for processing, and because the workpiece is secondarily clamped, errors generated by reference transmission influence the quality of the workpiece, and meanwhile, the rejection rate is high. That is to say, in the relevant technical scheme of current ordinary anchor clamps, can not solve the problem that machining process is many in the bent axle production process, and production efficiency is low.

SUMMERY OF THE UTILITY MODEL

Based on this, for solving prior art's not enough, but a 360 degrees rotatory fixture devices have especially been proposed, and it can effectively improve the machining precision and the efficiency of the complicated work piece of bent axle class.

The fixture device capable of rotating 360 degrees comprises a control table and a fixture, and is characterized in that the control table is provided with a numerical control workbench and a numerical control dividing head which is arranged on the numerical control workbench and can rotate 360 degrees; the fixture comprises a fixture body and a fixture pressing plate, wherein the fixture body is arranged on the numerical control dividing head and can rotate synchronously along with the numerical control dividing head, and the fixture pressing plate is matched with the fixture body and used for fixing a workpiece to be machined.

Alternatively, in one of the embodiments,

the numerical control dividing head is a dividing head with a servo motor and can rotate 360 degrees under the driving of the servo motor.

Alternatively, in one of the embodiments,

the clamp body is provided with a column inserting structure inserted into the through hole of the clamp pressing plate, and the center of the clamp pressing plate is provided with the through hole.

Alternatively, in one of the embodiments,

the clamp pressing plate is respectively and symmetrically provided with a stop block along the vertical center line.

Alternatively, in one of the embodiments,

the clamp and the numerical control workbench are respectively provided with mutually independent controllers.

Implement the embodiment of the utility model provides a, will have following beneficial effect:

firstly, the numerical control dividing head and the machine tool of the utility model are two independent controllers; after the clamp is positioned, a first procedure machining program of the machine tool is started, after the machining program is ended, a clamp indexing program on the numerical control indexing head is started to position and lock the clamp, and then a second procedure machining program of the machine tool is started, so that the working efficiency and the precision can be effectively improved; secondly, as the one-time positioning and clamping is adopted, the machining error caused by the repositioning and clamping is not needed, so that the coaxiality, the symmetry degree and the verticality among the elements of the workpiece can completely meet the requirements, and the manufacturing precision of the crankshaft is greatly improved; thirdly, the original dispersed procedures of turning first, milling later and the like are centralized on one machine tool for processing, so that the working efficiency is improved by 1 time; furthermore, the utility model discloses be applicable to other complicated work pieces of processing equally, only need replace the clamping apparatus once can.

Drawings

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

Wherein:

FIG. 1a is a schematic front view of a clamping device according to an embodiment;

FIG. 1b is a schematic side view of one embodiment of a clamp device;

FIG. 2a is a schematic front view of a workpiece according to one embodiment;

FIG. 2b is a schematic front view of the structure of a workpiece according to one embodiment;

FIG. 3a is a schematic front view of the structure of the clamp body in one embodiment;

FIG. 3b is a schematic cross-sectional view of the structure of the clamp body in one embodiment;

FIG. 4a is a schematic front view of a clamp platen configuration according to an embodiment;

FIG. 4b is a side view of the clamp platen structure according to one embodiment.

In the figure, the numerical control machine tool comprises a numerical control workbench 1, a numerical control dividing head 2, a clamp 3, a clamp 4, a servo motor 5, a workpiece 6, an inserting column structure 7, a through hole 8 and a stop block.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

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 invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present application. The first and second elements are both elements, but they are not the same element.

The fixture device capable of rotating 360 degrees is specially provided in the embodiment, aiming at the problems that when an existing crankshaft is machined, an existing fixture needs to be turned to an end milling machine for machining, due to the fact that a workpiece is clamped for the second time, errors generated by reference transmission affect the quality of the machined part, and meanwhile the rejection rate is high. As shown in fig. 1 to 4, which are structural views of a 360-degree rotatable jig device, the 360-degree rotatable jig device includes a console and a jig 3; the control table is provided with a numerical control workbench 1 and a numerical control dividing head 2 arranged on the numerical control workbench 1; the fixture comprises a fixture body which is arranged on the numerical control dividing head and can synchronously rotate along with the numerical control dividing head and a fixture pressing plate which is matched with the fixture body and used for fixing the workpiece 5 to be processed.

The following is illustrated by specific examples:

the specific application background is as follows: in order to improve the processing quality of parts and improve the labor efficiency, the applicant newly purchases a numerical control milling machine which does not have a four-axis interface and can only carry out program processing in the X \ Y \ Z three-dimensional direction.

In order to improve the machining precision and efficiency of the crankshaft, the applicant independently configures a set of programmable 360-degree-rotatable fixture device on a numerically controlled milling machine to realize one-time clamping of a workpiece and machining of machining elements of three surfaces of the crankshaft by using a machining program of the numerically controlled milling machine in three procedures.

Wherein, the console can adopt a wide 928TD lathe numerical control system.

The numerical control dividing head is a precise dividing head with a servo motor 4 and can rotate 360 degrees under the driving of the servo motor, if the numerical control dividing head can be a horizontal precise dividing head with a servo motor capable of being controlled by a program, the precise dividing head is driven by an AC or DC servo motor, a compound pitch worm and worm gear mechanism is used for transmission, and an oil pressure encircling type locking device is matched with a four-axis operation interface of a working master machine to perform simultaneous four-axis processing.

The crankshaft-type workpiece to be machined with a plurality of machining surfaces is correspondingly provided with different clamp structures, the clamp structures are clamped on a three-jaw chuck of a dividing head, for example, for the crankshaft shown in fig. 2a-2b, the clamp structures are inserted column structures, which are provided with through holes inserted into clamp pressing plates, on clamp bodies, through holes are formed in the center positions of the clamp pressing plates, and the inserted column structures are inserted into the through holes of the clamp pressing plates to complete the positioning and fixing effects on the workpiece; as shown in fig. 3a-3b and fig. 4a-4b, the clamp pressing plate is respectively provided with a stopper symmetrically along the vertical center line, the two stoppers can form a certain limiting area so as to assist the clamp body to complete the positioning of the workpiece, and further, the pressure center of the clamp pressing plate can be offset from the center of the clamp body by 6 mm in order to keep the pressing force balance. For example, the positioning of the workpiece on the fixture body is shown in fig. 2a-2B and fig. 3a-3B, the corresponding workpiece positioning is the 2-R position and the B \ C surfaces at the two ends of the L dimension, and the plane D \ E positioning is added, so as to form the complete positioning of the workpiece. The utility model discloses a but not limited to this kind of anchor clamps structure, the present invention is not in how specifically to design anchor clamps structure, but lies in borrowing dividing head to drive anchor clamps structure rotation characteristic, realizes the effect of once fixing a position clamping processing, therefore the present example no longer does other restrictions with regard to other anchor clamps structures.

Alternatively, in one of the embodiments,

the clamp body is provided with an independent controller, the clamp body is arranged on a workbench of the numerical control milling machine, and a control loop of the clamp body is led out from the side surface of the machine tool to a control box; if the clamp body can be controlled by a program instruction to drive the workpiece to rotate to the angle of the second procedure, then the workpiece is positioned and locked;

the specific processing sequence of the workpiece is as follows: firstly, processing a step surface and two holes of a surface in the direction B, driving the fixture to rotate by 90 degrees by the index head after the process, and processing an arc-shaped groove of the arc surface A after positioning, wherein the process is characterized in that a workpiece is fixed, and a cutter moves an arc-shaped route to process the workpiece; after the process, the fixture is driven by the index head to rotate for 90 degrees again, and after positioning, the step surface and two holes of the C-direction surface are machined.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The fixture device capable of rotating 360 degrees comprises a control table and a fixture, and is characterized in that the control table is provided with a numerical control workbench and a numerical control dividing head which is arranged on the numerical control workbench and can rotate 360 degrees; the fixture comprises a fixture body and a fixture pressing plate, wherein the fixture body is arranged on the numerical control dividing head and can rotate synchronously along with the numerical control dividing head, and the fixture pressing plate is matched with the fixture body and used for fixing a workpiece to be machined.

2. The fixture apparatus of claim 1, wherein the numerically controlled index head is an index head having a servo motor to enable 360 degree rotation by the servo motor.

3. The clamping device as claimed in claim 1 or 2, wherein the clamp body is provided with a post structure inserted into a through hole of the clamp pressing plate, and the clamp pressing plate is provided with a through hole at a central position.

4. The fixture apparatus of claim 3, wherein the fixture clamp plates are each symmetrically provided with a stop along the vertical centerline.

5. The clamp device recited in claim 1, wherein the clamp and the numerically controlled table each have independent controllers.