CN217096633U

CN217096633U - Workpiece clamping device

Info

Publication number: CN217096633U
Application number: CN202123389038.7U
Authority: CN
Inventors: 王爱华; 罗二龙; 徐玉龙
Original assignee: Hebei Master Metal Machinery Manufacturing Co ltd
Current assignee: Hebei Master Metal Machinery Manufacturing Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-08-02
Anticipated expiration: 2031-12-30

Abstract

The application provides a work piece clamping device, includes: the fixture seat is used for fixing a fixture, and the workpiece is clamped in the fixture; the two connecting plates are respectively fixed at two ends of the clamp seat along a first direction; the overturning driving mechanism is used for driving any connecting plate to rotate so as to realize overturning of the clamp seat; the rotation axis of the connecting plate is parallel to the first direction. The clamping mechanism not only can clamp workpieces, but also can be driven by the overturning driving mechanism to select the clamp seat for clamping the workpieces so as to replace the positions of the workpieces at the two ends of the first direction, thereby bringing convenience for alternately processing the two ends of the workpieces, avoiding clamping the workpieces again when the two ends of the workpieces are alternately processed, and improving the processing efficiency of the workpieces.

Description

Workpiece clamping device

Technical Field

The present disclosure relates generally to the field of machining techniques, and more particularly to a workpiece clamping device.

Background

Machine tools are machines for manufacturing machines, also called machine tools or machine tools, which are conventionally referred to as machine tools for short. The methods for machining machine parts in modern machine manufacturing are numerous: in addition to machining and drilling, casting, forging, welding, stamping, extrusion, etc., however, in general, any part requiring high precision and fine surface roughness is subjected to final machining by cutting, grinding or drilling on a machine tool.

The machine tool equipment is generally provided with a clamp mechanism for clamping a workpiece, and the clamp mechanism on the existing machine tool equipment has a single function.

Disclosure of Invention

In view of the above-mentioned drawbacks and deficiencies of the prior art, it would be desirable to provide a workpiece clamping device comprising:

the fixture seat is used for fixing a fixture, and the workpiece is clamped in the fixture;

the two connecting plates are respectively fixed at two ends of the clamp seat along the first direction;

the overturning driving mechanism is used for driving any connecting plate to rotate so as to realize overturning of the clamp seat; the rotation axis of the connecting plate is parallel to the first direction.

According to the technical scheme provided by the embodiment of the application, a plurality of workpiece clamping positions are arranged on the clamp seat along the first direction.

According to the technical scheme provided by the embodiment of the application, each workpiece clamping position is provided with:

the placing groove is used for placing a workpiece;

the pressing piece is provided with a pressing force by an oil cylinder and used for pressing the workpiece in the placing groove; the oil cylinder is fixed on the clamp seat.

According to the technical scheme provided by the embodiment of the application, the oil cylinder is arranged between two adjacent workpiece clamping positions, and the oil cylinder simultaneously controls the action of the pressing piece on the two adjacent station clamping positions.

According to the technical scheme provided by the embodiment of the application, the workpiece is a compressor crankshaft, and the compressor crankshaft comprises a long shaft, a short shaft and a connecting block for connecting the long shaft and the short shaft; the connecting block is provided with a positioning hole which is communicated along a second direction; the clamp base is provided with an elastic positioning pin corresponding to the positioning hole; the second direction is perpendicular to the first direction.

According to the technical scheme provided by the embodiment of the application, a first workpiece pushing mechanism and a second workpiece pushing mechanism are respectively arranged on two sides of the clamp seat, and the first workpiece pushing mechanism is used for pushing the workpiece out, so that the elastic positioning pin is separated from the positioning hole; the second workpiece pushing mechanism is used for pushing the workpiece to enable the workpiece to reset.

According to the technical scheme provided by the embodiment of the application, the connecting plate is an L-shaped plate.

In the technical scheme of this application, through providing a work piece clamping device, it not only can the centre gripping work piece, and its anchor clamps seat that is used for the centre gripping work piece still can select under upset actuating mechanism's drive to change the position of work piece at the first direction both ends, brought the facility for the both ends alternating machining of work piece, can need not centre gripping work piece again when the both ends alternating machining of work piece, improved the machining efficiency of work piece.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is a side view schematically showing a machine tool to which a workpiece holding apparatus according to embodiment 1 of the present application is applied;

FIG. 2 is a schematic view of the structure of FIG. 1 with the single-sided carriage removed;

FIG. 3 is an enlarged view of part A of FIG. 2;

FIG. 4 is an enlarged view of the portion B of FIG. 3;

FIG. 5 is a schematic structural diagram of a first embodiment of an oil cylinder in example 1 of the present application;

fig. 6 is a schematic structural diagram of a second embodiment of the oil cylinder in embodiment 1 of the present application.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Example 1

Referring to fig. 1, the present embodiment provides a workpiece clamping device 100, as shown in fig. 1, the workpiece clamping device 100 is installed on a machine tool 200; as shown in fig. 2 and 3, the work holding apparatus 100 includes:

a jig base 110 for fixing a jig 120, the workpiece 300 being clamped in the jig 120;

two connecting plates 130 respectively fixed to both ends of the jig base in the first direction; wherein the first direction is the direction of arrow a in fig. 3;

the overturning driving mechanism 900 is used for driving any connecting plate 130 to rotate so as to realize the overturning of the clamp seat 110, and the connecting plate 130 on the other side is rotatably fixed on the machine tool along the first direction; the rotation axis of the connecting plate 130 is parallel to the first direction. The turning driving mechanism 900 is a turning servo motor, a main shaft of the turning servo motor is fixedly connected with the center of the connecting plate 130, and the connecting plate 130 is driven to rotate around a central axis parallel to the first direction, so as to drive the fixture seat 110 to rotate.

As shown in fig. 3 and 4, a plurality of workpiece holding positions are arranged on the jig base 110 in a first direction.

As shown in fig. 3 and 4, each of the workpiece clamping positions is provided with:

a placing groove for placing the workpiece 300;

a pressing member 130, whose pressing force is provided by an oil cylinder 140, for pressing the workpiece in the placing groove; the oil cylinder is fixed on the clamp base 110.

In the embodiment, as shown in fig. 5, the oil cylinder 140 is a customized two-way oil cylinder, which has two pistons 141 extending in parallel in the same direction, and the pressing members 130 on two adjacent clamping positions are respectively fixed on the two pistons; an oil passage 142 for supplying oil to the oil cylinder 140 is provided in the jig base 110, and the pressing force of the pressing piece 130 is adjusted by adjusting the amount of the supplied oil, thereby clamping or unclamping the workpiece 300.

In other embodiments, as shown in fig. 6, the oil cylinder 140 may also be a common one-way oil cylinder, the end of the piston rod is connected with a connecting piece 143, the pressing pieces 130 on two adjacent clamping positions are located at two ends of the connecting piece 143, the apparatus is provided with an oil way distributor for supplying oil to each oil cylinder; the pressing force of the pressing member 130 is adjusted by adjusting the amount of the supplied oil, thereby clamping or unclamping the workpiece 300. A support 144 for fixing the cylinder 140 to the jig base 110 is provided through the connection 143.

As shown in fig. 3 and 4, the workpiece 300 is a compressor crankshaft including a major axis 330 and a minor axis 310 and a connecting block 320 connecting the major axis and the minor axis; the connecting block 320 is provided with a positioning hole 321 which penetrates through along a second direction; the clamp base is provided with an elastic positioning pin corresponding to the positioning hole; the second direction is perpendicular to the first direction.

As shown in fig. 1, a first workpiece pushing mechanism 400 and a second workpiece pushing mechanism 500 are respectively disposed on two sides of the fixture seat, and the first workpiece pushing mechanism 400 is used for pushing the workpiece out, so that the elastic positioning pin is separated from the positioning hole; the second workpiece pushing mechanism 500 is used for pushing the workpiece 300 so as to reset the workpiece 300.

In this embodiment, the first workpiece pushing mechanism 400 and the second workpiece pushing mechanism 500 are both processing components, and are respectively located at two sides of the workpiece clamping device 100 along the first direction.

In the present embodiment, the loading and unloading of the workpiece 300 are performed by the robot 710, and in fig. 3, the workpiece held below the robot 710 is a workpiece to be unloaded.

A group of three processing spindles 410 is arranged on the processing assembly along the second direction corresponding to each clamp, the processing spindles in the same group are arranged along the z direction, and the positions of the three processing spindles can slide along the z direction to adjust and determine which processing spindle is aligned with the workpiece; the feeding direction of the tool in the processing spindle 410 is a second direction; the second direction is the y direction in fig. 2, the first direction is the x direction in fig. 2, and the processing spindles on the two sets of processing assemblies are arranged oppositely.

The processing assembly is disposed on a base 600; a sliding seat 610 is slidably clamped on the base 600 along a second direction, and the sliding seat 610 is slidably clamped on the base 600 along the second direction; the base 600 is further provided with a first driving mechanism for driving the sliding seat 610 to slide. The first driving mechanism is a servo motor, two y-axis slide rails are arranged on the base 600 along the second direction, and the slide carriage 610 is slidably clamped on the y-axis slide rails; a lead screw is coaxially arranged on an output shaft of the first driving mechanism and is in threaded connection with the sliding seat 610; the first driving mechanism drives the slide carriage 610 to move along the y-axis slide rail by driving the lead screw to rotate, so that the machining assembly can move, and when the machining assembly moves, the machining spindle of the machining assembly pushes the workpiece to move.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A workpiece holding device, comprising:

a clamp base for securing a clamp within which the workpiece is clamped;

2. The workpiece holding device of claim 1, wherein a plurality of workpiece holding positions are provided on the chuck base in a first direction.

3. The workpiece holding device of claim 2, wherein each of the workpiece holding positions has:

the placing groove is used for placing a workpiece;

4. The workpiece holding device according to claim 3, wherein the oil cylinder is arranged between two adjacent workpiece holding positions, and the oil cylinder controls the pressing member action on the two adjacent station holding positions simultaneously.

5. The workpiece holding device of claim 4, wherein the workpiece is a compressor crankshaft including a major axis and a minor axis and a connecting block connecting the major axis and the minor axis; the connecting block is provided with a positioning hole which is communicated along a second direction; the clamp base is provided with an elastic positioning pin corresponding to the positioning hole; the second direction is perpendicular to the first direction.

6. The workpiece clamping device according to claim 5, wherein a first workpiece pushing mechanism and a second workpiece pushing mechanism are respectively arranged on two sides of the clamp seat, and the first workpiece pushing mechanism is used for pushing the workpiece out so that the elastic positioning pin is separated from the positioning hole; the second workpiece pushing mechanism is used for pushing the workpiece to enable the workpiece to reset.

7. The workpiece holding device of any of claims 1-6, wherein the connecting plate is an L-shaped plate.