CN112388346A

CN112388346A - Workpiece clamping device for numerical control machining center

Info

Publication number: CN112388346A
Application number: CN202011314695.2A
Authority: CN
Inventors: 钟波
Original assignee: Wuhan Zhongheng Xinyuan Machinery Equipment Co ltd
Current assignee: Wuhan Zhongheng Xinyuan Machinery Equipment Co ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-02-23

Abstract

The invention relates to a workpiece clamping device for a numerical control machining center, which comprises a base, and a lower layer plate and an upper layer plate which are sequentially arranged above the base, wherein two fixed clamping assemblies and two movable clamping assemblies are arranged on the upper layer plate, the fixed clamping assemblies and the movable clamping assemblies respectively comprise a fastening mechanism arranged towards the circle center of the upper layer plate, the fixed clamping assemblies further comprise a fixed seat, the fixed seat is connected with one fastening mechanism, the movable clamping assemblies further comprise a double-rod air cylinder, and the double-rod air cylinder is connected with one fastening mechanism. The clamping device provided by the invention can be used for fixing workpieces with different sizes and shapes, and can be used for fixing a plurality of workpieces at the same time, in the processing process, the workpieces can rotate along with the upper plate, a plurality of end faces of the workpieces can be processed, the practicability is higher, and the working efficiency is higher.

Description

Workpiece clamping device for numerical control machining center

Technical Field

The invention relates to the technical field of numerical control machining, in particular to a workpiece clamping device for a numerical control machining center.

Background

The numerical control machining is a technological method for machining parts on a numerical control machine tool, and the technological procedures of the numerical control machine tool machining and the traditional machine tool machining are consistent from the whole, but are obviously changed. The mechanical processing method for controlling the displacement of the parts and the cutter by using digital information is an effective way for solving the problems of variable part varieties, small batch, complex shape, high precision and the like and realizing efficient and automatic processing. The numerical control machining center integrates the functions of milling, boring, drilling, tapping, cutting threads and the like on one device, so that the numerical control machining center has multiple technological means. Nowadays, a numerical control machining center has become the mainstream direction of modern machine tool development and is widely applied to machine manufacturing. The device commonality that current numerical control machining center was used for the centre gripping work piece is relatively poor, to different products or not unidimensional product, often will change different clamping device, leads to intensity of labour big, and work efficiency is low, need add a plurality of faces of work piece moreover and add man-hour, need fix the work piece again, and its complex operation has increased the degree of difficulty in the processing.

Disclosure of Invention

In order to solve the problems, the invention provides a workpiece clamping device for a numerical control machining center, which comprises a base, a lower plate and an upper plate, wherein the lower plate and the upper plate are sequentially arranged above the base, the upper plate and the lower plate are circular, two fixed clamping components and two movable clamping components are arranged on the upper plate, the fixed clamping components and the movable clamping components respectively comprise a fastening mechanism arranged towards the center of the upper plate, the fastening mechanism comprises a horizontally arranged bracket, two clamping pieces are connected in the bracket in a sliding manner, a threaded rod is connected to the outer side of each clamping piece, the threaded rod penetrates through the bracket and is in threaded connection with the bracket, the threaded rod can push the clamping pieces to move in the bracket, the fixed clamping components also comprise a fixed seat which is connected with one fastening mechanism, and the movable clamping components also comprise a double-rod air cylinder, the double-rod cylinder is connected with one of the fastening mechanisms.

Preferably, the edge of the upper plate is provided with two symmetrical semicircular T-shaped slideways.

Preferably, one of the fixed clamping assembly and one of the movable clamping assemblies further comprise a sliding block which is engaged with the slide way and can move along the slide way.

Preferably, one of the sliding blocks is arranged below the fixed seat, and the other sliding block is arranged below the double-rod cylinder.

Preferably, the other fixed clamping assembly and the other movable clamping assembly are symmetrically and fixedly arranged on the upper plate.

Preferably, a rotating shaft is fixedly connected to the center of the lower portion of the upper plate, and the rotating shaft penetrates through the gear of the lower plate to be connected with a servo motor for driving the lower plate to rotate.

Preferably, a bearing ring is arranged at the joint of the rotating shaft and the lower plate.

Preferably, an annular groove is formed above the lower plate, and four support columns which can be arranged in the annular groove and can rotate along the annular groove are uniformly arranged below the upper plate.

Preferably, the clamping piece is provided with an anti-skid layer, and the anti-skid layer is made of silica gel.

Preferably, the connecting portion of the bracket and the clamping member is respectively provided with a protruding strip and a sliding rail which are mutually embedded, and the clamping member can move along the protruding strip.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the following beneficial effects:

1) the clamping device provided by the invention is provided with the upper plate and the lower plate, the upper plate can be driven by the servo motor to rotate, the processing of multiple surfaces of a workpiece can be realized, and the working efficiency is improved;

2) according to the clamping device provided by the invention, in the working process, each fixed clamping assembly and each movable clamping assembly can be independently operated, for a plurality of small workpieces with different sizes, each clamping assembly can independently fix one workpiece for processing, in the processing process, the workpieces at different positions can be processed by rotating the upper plate, a plurality of workpieces with different sizes are processed at one time, the flexibility is higher, the working efficiency is improved, and the clamping device does not need to be replaced;

3) one of them fixed centre gripping subassembly and one activity centre gripping subassembly can rotate on the upper plate, can carry out the centre gripping to the anomalous work piece of size shape and fix, and the practicality is more extensive, and the reliability is higher, improves numerical control machining center's work efficiency.

Drawings

FIG. 1 is a schematic structural view (top view) of the present invention;

FIG. 2 is a schematic structural view of the cross-section of FIG. 1 according to the present invention;

fig. 3 is a schematic structural view of the fastening mechanism of the present invention.

1-a base; 2-lower layer plate; 3-upper layer plate; 4-a scaffold; 5-a clamping member; 6-a threaded rod; 7-a fixed seat; 8-a double-rod cylinder; 9-a slideway; 10-a slide block; 11-a rotating shaft; 12-a servo motor; 13-a bearing ring; 14-an annular groove; 15-a support column; 16-raised bars; 17-sliding rail.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention. In the drawings, the size and relative sizes of certain features may be exaggerated for clarity.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected" and "coupled" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; the term "connecting" may refer to a direct connection, an indirect connection through an intermediate, a connection between two elements or an interaction relationship between two elements, and a person skilled in the art can understand the specific meaning of the above terms in the present invention in a specific case.

In the description of the present invention, the terms "upper", "lower", "left", "right", "front", "rear", and the like are used in the orientations and positional relationships shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the designated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in the attached drawings 1-3 of the specification, the invention provides a workpiece clamping device for a numerical control machining center, which comprises a base 1, and a lower layer plate 2 and an upper layer plate 3 which are sequentially arranged above the base 1, wherein the upper layer plate 3 and the lower layer plate 2 are circular, two fixed clamping components and two movable clamping components are arranged on the upper layer plate 3, each fixed clamping component and each movable clamping component comprises a fastening mechanism arranged towards the center of the upper layer plate 3, each fastening mechanism comprises a horizontally arranged bracket 4, two clamping pieces 5 are slidably connected in the bracket 4, a threaded rod 6 is connected to the outer side of each clamping piece 5, each threaded rod 6 penetrates through the bracket 4 and is in threaded connection with the bracket 4, each threaded rod 6 can push the clamping pieces 5 to move in the bracket 4, each fixed clamping component further comprises a fixed seat 7, fixing base 7 and one fastening device connects, activity centre gripping subassembly still includes double-pole cylinder 8, double-pole cylinder 8 and one fastening device connects, and the removal is provided with two fixed centre gripping subassemblies and two activity centre gripping subassemblies on the upper plate, and two fixed centre gripping subassemblies are adjacent to be set up, and two activity centre gripping subassemblies are adjacent to be set up, and the front end of fixed centre gripping subassembly and activity centre gripping subassembly all is provided with fastening device, and the structure of its front end is all the same, and every fixed centre gripping subassembly and every activity centre gripping subassembly can independently fix the work piece, also can mutually support and carry out the fixed work piece of centre gripping, specifically confirm with the size and the shape of work piece.

In a further preferred embodiment, the edge of the upper plate 3 is provided with two symmetrical semicircular T-shaped slideways 9.

In a further preferred embodiment, one of the fixed clamping assemblies and one of the movable clamping assemblies further comprise a slide 10 engaged with the slide 9 and movable along the slide 9.

In a further preferred embodiment, one of the sliding blocks 10 is arranged below the fixed seat 7, and the other sliding block 10 is arranged below the double-rod cylinder 8.

In this setting, a fixed centre gripping subassembly and a fixed setting of activity centre gripping subassembly are in just the symmetry sets up on the upper plate, and the setting that can remove is in through being connected with the slider in the below in other one fixed centre gripping subassembly and other one activity centre gripping subassembly on the slide, a fixed centre gripping subassembly and a activity centre gripping subassembly can move in the within range of slide, can carry out the centre gripping to the work piece of different sizes or shape on a wider range, and the practicality is stronger.

In a further optimized embodiment, a rotating shaft 11 is fixedly connected to the lower center of the upper plate 3, and the rotating shaft 11 penetrates through the lower plate 2 and is in gear connection with a servo motor 12 for driving the rotating shaft to rotate.

In a further optimized embodiment, a bearing ring 13 is arranged at the joint of the rotating shaft 11 and the lower plate 2.

In a further optimized embodiment, an annular groove 14 is arranged above the lower plate 2, and four supporting columns 15 which can be placed in the annular groove 14 and can rotate along the annular groove 4 are uniformly arranged below the upper plate 3.

The upper plate can rotate, can process the facing of work piece, and is convenient and reliable.

In a further preferred embodiment, the clamping member 5 is provided with an anti-slip layer (not shown in the figure), and the anti-slip layer is made of silica gel.

The clamping member is movable within a support, and in use, the connection between the support and the clamping member is provided with a projecting strip 16 and a sliding rail 17 which are engaged with each other, respectively, and the clamping member is movable along the projecting strip 16.

In summary, the invention provides a workpiece clamping device for a numerical control machining center, which can fix workpieces with different sizes and shapes, each clamping assembly can work independently or cooperatively, a plurality of workpieces can be machined simultaneously, an upper plate can rotate in the machining process, a plurality of surfaces of the workpieces can be machined, the practicability is higher, the usable range is wider, the clamping device does not need to be frequently replaced for the workpieces with different sizes or shapes, the time can be saved, and the working efficiency is improved.

It should be understood by those skilled in the art that the present invention may be embodied in many other specific forms without departing from the spirit or scope of the invention. Although an embodiment of the present invention has been described, it is to be understood that the present invention should not be limited to this embodiment, and variations and modifications can be made by those skilled in the art within the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A workpiece clamping device for a numerical control machining center is characterized by comprising a base, a lower plate and an upper plate which are sequentially arranged above the base, wherein the upper plate and the lower plate are circular, two fixed clamping components and two movable clamping components are arranged on the upper plate, the fixed clamping components and the movable clamping components respectively comprise a fastening mechanism arranged towards the circle center of the upper plate, the fastening mechanism comprises a horizontally arranged bracket, two clamping pieces are slidably connected in the bracket, the outer side of each clamping piece is connected with a threaded rod, the threaded rod penetrates through the bracket and is in threaded connection with the bracket, the threaded rod can push the clamping pieces to move in the bracket, the fixed clamping components further comprise a fixed seat, the fixed seat is connected with one of the fastening mechanisms, and the movable clamping components further comprise a double-rod air cylinder, the double-rod cylinder is connected with one of the fastening mechanisms.

2. The workpiece clamping device for the numerical control machining center according to claim 1, wherein the edge of the upper plate is provided with two symmetrical semicircular T-shaped slideways.

3. The workpiece holding device for a nc machining center as set forth in claim 2, wherein one of said fixed holding member and said movable holding member further includes a slider engaged with said slide and movable along said slide.

4. The workpiece clamping device for the numerical control machining center as recited in claim 3, wherein one of the slide blocks is disposed below the fixed base, and one of the slide blocks is disposed below the double-rod cylinder.

5. The workpiece clamping device for the numerical control machining center as recited in claim 2, wherein the other fixed clamping assembly and the other movable clamping assembly are symmetrically and fixedly arranged on the upper plate.

6. The workpiece clamping device for the numerical control machining center as recited in claim 1, wherein a rotating shaft is fixedly connected to the lower center of the upper plate, and the rotating shaft penetrates through the lower plate and is connected with a servo motor for driving the lower plate to rotate.

7. The workpiece clamping device for the numerical control machining center as recited in claim 6, wherein a bearing ring is arranged at the joint of the rotating shaft and the lower plate.

8. The workpiece clamping device for the numerical control machining center as recited in claim 7, wherein an annular groove is formed above the lower plate, and four supporting columns which can be placed in the annular groove and can rotate along the annular groove are uniformly formed below the upper plate.

9. The workpiece clamping device for the numerical control machining center according to claim 1, wherein an anti-slip layer is arranged on the clamping piece, and the anti-slip layer is made of silica gel.

10. The workpiece clamping device for the numerical control machining center according to any one of claims 1 to 9, wherein a protruding strip and a sliding rail which are mutually embedded are respectively arranged at the connection position of the bracket and the clamping piece, and the clamping piece can move along the protruding strip.