CN205166474U - A quick positioning and clamping device for CNC - Google Patents

Abstract

A fast positioning and clamping device for CNC, including a machine tool workbench, the machine tool workbench, a positioning seat is provided above the machine tool workbench, a replaceable work pallet is provided above the positioning seat, and the two positions of the positioning seat There is a clamping assembly on the side, and the workpiece set on the upper end of the work pallet is fixed in the work pallet through the clamping assembly; the clamping assembly includes a clamping cylinder and a clamping part, and the clamping part is controlled up and down by the clamping cylinder Move and fix the workpiece placed in the work pallet. The utility model has strong practicability, simple and convenient replacement, reduced input cost of processing equipment, simple and convenient operation, shortened replacement time, improved production efficiency; shortened positioning time, improved positioning accuracy of workpieces, and improved processing of workpieces. The final quality; avoid the workpiece from shifting or moving during the processing process, which will affect the quality of the product, reduce the defective product and defective rate, and improve the reputation of the enterprise.

Description

A Fast Positioning Clamping Device for CNC

technical field

The utility model belongs to the technical field of workpiece production, in particular to a fast positioning and clamping device for CNC.

Background technique

In the process of workpiece production and processing, it is usually necessary to use CNC numerical control machine tools to process the workpiece in order to obtain the workpiece required by the customer. At present, in the processing process of workpiece processing enterprises, different workpieces need different CNC equipment for production and processing, which increases the investment of enterprises. In addition, the customer needs to process both sides of the workpiece. Therefore, one side of the workpiece is processed first, and then the other side is processed. During production, it is found that the workpiece is prone to movement or offset during processing. Moreover, during processing, since both sides of the workpiece need to be processed, after the first side is processed, the workpiece needs to be positioned to be processed into the desired workpiece, reducing the generation of defective products, reducing the input of raw materials, and reducing the waste of resources. Therefore, how to develop a device that is practical, flexible to use, and can improve the quality of workpieces has become the direction of enterprise research and development.

Contents of the invention

In view of this, the technical problem to be solved by the utility model is a fast positioning and clamping device for CNC with strong practicability and flexible use.

In order to solve the above-mentioned technical problems, the utility model adopts the following scheme to realize: a kind of fast positioning and clamping device for CNC, including machine tool workbench, described machine tool workbench, the top of the machine tool workbench is provided with a positioning seat, and the positioning seat A replaceable work pallet for placing workpieces is provided above the locating seat, and adjustable clamping assemblies are provided on both sides of the positioning seat, and the workpieces set on the upper end surface of the working pallet are fixed in the working pallet through the clamping assemblies; The clamping assembly includes an adjustable clamping cylinder arranged on the machine table and a clamping piece connected with the clamping cylinder, and the clamping piece is controlled to move up and down by the clamping cylinder to fix the workpiece placed in the work pallet.

Wherein, the upper end surface of the positioning seat is provided with a plurality of positioning holes, and the positioning holes are located on both sides of the positioning seat.

Wherein, the described work pallet is provided with a plurality of positioning posts, work pallet positioning holes, limit card slots and positioning slots; The shape and size of the positioning hole match; the positioning hole of the working pallet is set on the upper end surface of the working pallet, located at the central axis of the working pallet; the limit card slot is symmetrical with the positioning hole of the working pallet Set on the left and right sides of the work pallet; the positioning grooves are set on the upper, lower and left sides of the work pallet, and the two positioning grooves located on the upper and lower parts of the work pallet are symmetrical to the work pallet positioning hole.

Wherein, the working tray is fixed in the positioning seat through the cooperation of the positioning column and the positioning hole.

Wherein, the number of the positioning holes and the positioning posts is more than two, and the number of the positioning holes and the positioning posts is the same.

Wherein, the size of the limiting slot is the same as that of the clamping cylinder.

Wherein, the clamping member includes a fixing part connected with the clamping cylinder and a clamping part for fixing the workpiece, and the fixing part is perpendicular to the clamping part.

Wherein, the positioning seat is a square structure, and the working tray is a circular structure.

Compared with the prior art, the utility model has strong practicability, adopts replaceable work pallets, enables enterprises to adopt different work pallets according to different workpiece processing requirements, easy and convenient replacement, and reduces the input cost of processing equipment. At the same time, the working tray and the positioning seat are fixed by the positioning column and the positioning hole. When replacing, you only need to put the positioning column of the working tray into the positioning hole of the positioning seat, and it can be used. The operation is simple, convenient and fast, and the replacement time is shortened. The production efficiency is improved; the work pallet is provided with a work pallet positioning hole and a positioning groove. When processing the first side of the workpiece, the workpiece is fixed through the cooperation of the work pallet positioning hole and the pin; when processing the other side of the workpiece, the workpiece passes through three The pin is fixed in the positioning groove to realize the positioning of the workpiece, shorten the positioning time, improve the positioning accuracy of the workpiece, and improve the quality of the workpiece after processing, and the positioning groove is used for positioning, so that the work pallet can be used for processing workpieces of different sizes , to increase the practicability of the working tray; the clamping assembly can be adjusted on both sides of the positioning seat, and there are two limit card slots on the working tray corresponding to the position of the clamping assembly to match the clamping assembly , so that the user can adjust according to the size of the workpiece, so that the clamping component can clamp smaller workpieces, realize the firm fixation of the workpiece, prevent the workpiece from shifting or moving during processing, affect the quality of the product, and reduce defective products And defective rate, improve corporate reputation.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Figure 2 is an exploded view of the utility model.

Fig. 3 is an exploded view of the processing of the workpiece of the present invention.

Fig. 4 is an exploded view of the knot processed at the other end of the workpiece of the present invention.

Fig. 5 is a structural schematic diagram of the clamping part of the present invention.

Fig. 6 is a top view of the working tray of the present invention.

detailed description

In order to allow those skilled in the art to better understand the technical solution of the utility model, the utility model will be further elaborated below in conjunction with the accompanying drawings.

As shown in FIGS. 1 to 6 , a quick positioning and clamping device for CNC includes a machine tool table 1 , a positioning seat 2 , a work pallet 3 and a clamping assembly 4 . A positioning seat 2 and a work pallet 3 are sequentially provided above the machine tool workbench 1 . The positioning seat 2 is fixed on the upper end surface of the machine tool workbench, and a replaceable work pallet 3 for placing workpieces is arranged above the positioning seat 2. When in use, different work pallets are replaced according to different workpiece processing requirements, increasing The practicability of the equipment reduces the investment in equipment and saves production costs. Wherein the positioning seat 2 is a square structure, and the working tray 3 is a circular structure. In order to be able to fix the work pallet placed on the work pallet, and at the same time, the user can adjust the clamping assembly to meet the needs of workpieces of different sizes, so that the clamping assembly matches the size of the workpiece. The adjusted clamping assembly 4, by adjusting the positional relationship between the clamping assembly and the working pallet, realizes fixing the workpiece set on the upper end surface of the working pallet in the working pallet. The clamping assembly 4 includes an adjustable clamping cylinder 41 fixed on the machine tool workbench and a clamping piece 42 for fixing the workpiece. Side; the clamping piece 42 is connected with the clamping cylinder, and the clamping piece 42 is fixed on the upper end of the piston rod of the clamping cylinder by a nut, and the clamping piece 42 is controlled to move up and down by the clamping cylinder 41. The workpieces in the work tray are fixed to prevent the workpieces from shifting and moving during the production and processing process, which will affect the quality of processing. The clamping part 42 includes a fixing part 421 connected with the clamping cylinder and a clamping part 422 for fixing the workpiece, and the fixing part 421 is perpendicular to the clamping part 422 . The clamping part 422 is located above the work pallet, and the lower end of the clamping part is provided with a continuous tooth-shaped notch, through the action of the tooth-shaped notch and the workpiece, the friction between the clamping part and the workpiece is increased , making the fixing of the workpiece more firm. When in use, according to the size of the workpiece, the positional relationship between the clamping cylinder and the work pallet is adjusted to realize the fixing of workpieces of different sizes.

In order to facilitate the replacement and positioning of the workpiece, shorten the replacement and positioning time, and improve production efficiency, a plurality of positioning holes 21 are provided on the upper surface of the positioning seat 2, and the positioning holes 21 are located on both sides of the positioning seat 2. Through the positioning The hole realizes the fixed connection with the working pallet. The work pallet 3 is provided with a plurality of positioning columns 31 that match the positioning holes of the positioning seat, the work pallet positioning holes 32 for positioning the workpiece for the first time, and the clamping cylinder and the work pallet for limiting The limiting slot 33 with the minimum positional relationship and the positioning slot 34 for positioning the workpiece for the second time. The positioning column 31 is arranged on the lower end surface of the working tray 3, and the shape and size of the positioning column match the shape and size of the positioning hole. When the working tray needs to be fixed on the positioning seat, the working tray 3 is fixed in the positioning seat 2 through the positioning column 31 and the positioning hole 21. When replacing, it is only necessary to take the working tray out of the positioning seat 2, and the operation is simple Convenient, improve replacement efficiency and shorten time. The number of the positioning holes 21 and the positioning posts 31 are the same, and their positions correspond to each other. The number of the positioning holes 21 and the positioning posts 31 is more than two, all of which can realize the fixed connection between the working tray and the positioning seat. The number of positioning columns and positioning holes depends on the size and shape of the workpiece, the size of the work pallet and the size of the positioning seat, and the number of positioning columns and positioning holes can generally be realized by using two during design. The work pallet positioning hole 32 is arranged on the upper end surface of the work pallet 3 and is located at the center axis of the work pallet 3. When the workpiece is positioned for the first time, the positioning hole and the pin are used to position the workpiece. Described limit card groove 33 is arranged on the left and right sides of work pallet 3 symmetrically with work pallet positioning hole 32 as symmetrical axis, and limit card groove is positioned at work pallet, wherein the size of limit card groove 33 and clamping The cylinders 41 are the same size. The clamping cylinder is adjustable on both sides of the limit card slot 33 to fix the workpiece placed on the work pallet; when the clamping cylinder is fixed in the fiber card slot 33, at this time, the workpiece fixed by the clamping assembly is the smallest . The positioning grooves 34 are arranged on the upper part, the lower part and the left side of the working pallet 3, and the two positioning grooves 34 located on the upper part and the lower part of the working pallet 3 are symmetrical with the working pallet positioning hole 32 as the axis of symmetry. The straight line where the two positioning grooves 34 at the top and bottom of the work pallet are located is perpendicular to the straight line where the two limiting slots are located, and the straight line where the positioning slot 34 on the left side of the working tray is located is perpendicular to the line where the two limiting slots are located. straight line parallel. When the workpiece is positioned for the second time, three pins and three positioning grooves are matched together to position the workpiece in the X-axis and Y-axis directions, thereby realizing rapid positioning of the workpiece.

The workpiece to be processed is divided into A side and B side. The first choice is to process the A surface of the workpiece. During processing, take the work pallet out of the quick positioning clamping device; drill a workpiece positioning hole at the center axis of the B surface of the workpiece. The position of the workpiece positioning hole is the same as that of the work pallet. The position of the positioning hole of the work pallet corresponding to the position of the central axis, insert the pin into the positioning hole of the workpiece, and then fix the B side of the workpiece with the pin inserted in the work pallet through the pin, and then fix the work pallet with the workpiece fixed on the positioning seat Inside; control the work of the clamping components, the clamping cylinder controls the clamping parts to move down, fix the workpiece in the work tray, and process the workpiece. When the A side of the workpiece is processed, the clamping cylinder works to control the clamping piece to move upward, and the workpiece and the work pallet are taken out from the positioning seat. Corresponding to the position of drilling three workpiece positioning holes, insert three pins into the workpiece positioning holes on the A surface of the workpiece, and then fix the A surface of the workpiece in the positioning groove of the work pallet to realize the positioning and fixing of the workpiece. Three pins and three positioning grooves are used together to position the workpiece, which can position the workpiece in the X-axis and Y-axis directions, realize rapid positioning of the workpiece, and can avoid the workpiece from moving during processing, which will affect the stability of the workpiece. quality. Then fix the work pallet with the workpiece fixed on the positioning seat, the clamping component works, the clamping cylinder controls the clamping part to move downward to clamp the workpiece, and the B surface of the workpiece is processed. After the processing is completed, the clamping cylinder Control the upward movement of the clamping parts to take out the processed workpiece. Repeat this operation to process the next workpiece. At the same time, when processing relatively small workpieces, the position of the clamping cylinder can also be adjusted, and the clamping cylinder can be fixed in the limit slot, so as to realize the fixing of small workpieces and increase the practicality.

The above-mentioned embodiments are only specific implementations of the present utility model, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present utility model, and these obvious replacement forms all belong to the protection scope of the present utility model.

Claims (8)

1. the fast positioning clamping device for CNC, comprise platen (1), it is characterized in that, described platen (1), the top of platen (1) is provided with positioning seat (2), the top of positioning seat (2) is provided with the removable trays for place work piece (3), and the both sides of positioning seat (2) are provided with adjustable clamp assembly (4), are fixed in trays by clamp assembly by the workpiece being arranged on trays upper surface; Described clamp assembly (4) comprises adjustable clamping element (42) being arranged on the clamping cylinder (41) on platen and being connected with clamping cylinder, and the workpiece moved up and down being placed in trays by clamping cylinder (41) control clamping element (42) is fixed.

2. according to claim 1ly it is characterized in that in the fast positioning clamping device of CNC, the upper surface of described positioning seat (2) is provided with multiple locating hole (21), and this locating hole (21) is positioned at the both sides of positioning seat (2).

3. according to claim 2ly it is characterized in that in the fast positioning clamping device of CNC, described trays (3) is provided with multiple locating dowel (31), trays locating hole (32), spacing draw-in groove (33) and locating slot (34); Described locating dowel is arranged on the lower surface of trays (3), and the shape of the shape of this locating dowel and size and locating hole and size match; Described trays locating hole (32) is arranged on the upper surface of trays (3), is positioned at the center axial position of trays (3); Described spacing draw-in groove (33) is the symmetrical axisymmetric left and right sides being arranged on trays (3) with trays locating hole (32); Described locating slot (34) is arranged on the top of trays (3), bottom and left side, and two locating slots (34) being positioned at the upper and lower of trays (3) with trays locating hole (32) for symmetry axis is symmetrical.

4. according to claim 3ly it is characterized in that in the fast positioning clamping device of CNC, described trays (3) is matched by locating dowel (31) and locating hole (21) and is fixed in positioning seat (2).

5. according to claim 4ly it is characterized in that in the fast positioning clamping device of CNC, described locating hole (21) and the quantity of locating dowel (31) are more than two, and locating hole (21) is identical with the quantity of locating dowel (31).

6. according to claim 5ly it is characterized in that in the fast positioning clamping device of CNC, the size of described spacing draw-in groove (33) is identical with the size of clamping cylinder (41).

7. according to claim 1 in the fast positioning clamping device of CNC, it is characterized in that, described clamping element (42) comprises the fixed part (421) that is connected with clamping cylinder and the clamping section (422) for fixation workpiece, and fixed part (421) is perpendicular to clamping section (422).

8. according to claim 1ly it is characterized in that in the fast positioning clamping device of CNC, described positioning seat (2) is square structure, and described trays (3) is circular configuration.