CN204976028U - Telescopic fourth axle swivel work head - Google Patents

Abstract

The utility model discloses a telescopic fourth-axis rotary workbench, which comprises a workbench and two fixture seats installed on the workbench, and the two fixture seats are respectively equipped with rotating fixtures which rotate synchronously and are used to clamp workpieces ; At least one fixture seat is slidably fitted on the workbench for adapting to workpieces of different sizes; the workbench is provided with a tensioning mechanism that pushes the fixture seat to slide to tension the workpiece. The utility model has a simple structure, can turn over the processing object without disassembly, can realize 360° turning, expands the processing range, saves man-hours and materials, has an adjustable processing range, and has a tightening function to ensure processing feasibility.

Description

A telescopic fourth-axis rotary table

technical field

The utility model relates to a machine tool auxiliary device, in particular to a telescopic fourth-axis rotary workbench.

Background technique

If the CNC machine tool wants to be effective, it must have sufficient accessory support. The vigorous development of numerical control technology has brought many changes to product manufacturing methods and manufacturing efficiency. With the advancement of machine tool technology, a new industry has emerged, the machine tool fixture industry. The development of machine tool fixtures is very fast. As an auxiliary device, fixtures have been closely integrated with machine tools. For example, the machine tool industry in Germany, while selling machine tools, will prepare a set of corresponding fixtures and clamping solutions for corresponding products for customers. Due to the well-developed fixture industry in Germany, the German machine tool industry, which was once hit by Japan, Italy, and South Korea in the 1990s, regained its competitiveness.

Fixtures are a very important auxiliary device for machine tools, which directly restrict manufacturing efficiency. Unsuitable fixtures lead to low production capacity and even product failure.

The fourth-axis rotary table is an important accessory of a machine tool. It is used to process holes, grooves and slopes with indexing requirements. When the table rotates during processing, it can process arc surfaces, arc grooves, etc. According to different structures, the universal turntable is divided into horizontal turntable, vertical and horizontal turntable and universal turntable.

The existing published patent literature discloses a machine-added turntable fixture for a four-axis machining center, which includes a fixture base plate, a tailstock, an indexing head, an oil and gas path distributor assembly, an L plate, a bridge plate, and a fixture positioning and clamping unit , the tailstock and the indexing head are fixedly installed on the bottom plate of the fixture, and the oil and air distributor assembly is installed on the outer surface of the tailstock. , the two ends of the bridge plate are respectively connected with the L plate, and there are multiple fixture positioning units, which are fixed on the bridge plate at regular intervals.

The basis of the fourth-axis device in the above literature is still the workbench. Because of the existence of the workbench, it is still impossible to process the back of the part, so it can only realize the processing of a part within 180°. If a part needs to be processed on the back, The part must be removed and re-clamped to continue the job. Due to the restriction of the workbench, the function of the fourth axis cannot be fully utilized, which limits the efficiency of parts processing.

Utility model content

In order to overcome the deficiencies in the prior art, the utility model provides a retractable fourth-axis rotary workbench, which is suitable for products that need to process multiple surfaces, especially the back, and has a long size, and can be clamped once. Realize 360° all-round processing, no need to remove the parts and turn them over for re-clamping.

The concrete technical scheme of the utility model is as follows:

A retractable fourth-axis rotary workbench, including a workbench and two fixture seats installed on the workbench, the two fixture seats are respectively equipped with rotating fixtures that rotate synchronously and are used to clamp workpieces;

at least one fixture seat is slide-fitted on the table for accommodating workpieces of different sizes;

The workbench is provided with a tensioning mechanism that pushes the fixture seat to slide to tension the workpiece.

In the utility model, the rotating fixture in each fixture seat is used to clamp and fix the workpiece, and has a 360° automatic degree of rotation, which drives the workpiece to rotate during the processing, completes the workpiece processing in all directions, and avoids secondary clamping; controls one of the fixtures The seat moves on the workbench to adjust the distance between the two sliding seats to meet the installation needs of workpieces of different lengths and sizes, and push the fixture seat to tension the workpiece through the tensioning mechanism to ensure that the workpiece is in a tight state to improve processing precision.

Preferably, each rotating fixture includes a turntable that is rotatably fitted in the corresponding fixture seat, and a clamping portion disposed on the turntable, and the clamping portions on the two rotating fixtures are oppositely arranged. The synchronously moving turntable is driven by a motor installed on the fixture base, and the clamping part is clamped at both ends of the workpiece to realize the turning of the workpiece processing surface.

In the utility model, the two fixture seats can be set to slide and fit on the workbench, that is, the positions of the two fixture seats can be moved, but to adjust the distance between the two fixture seats, it is usually only necessary to control the movement of one of them . Preferably, one of the fixture seats is fixed on the workbench, and the other fixture seat is slidably fitted on the workbench.

Preferably, the workbench is equipped with a slide plate, and the fixture seat slidingly matched with the workbench is movably installed on the slide plate; the slide plate and the workbench are provided with mutually matching positioning holes for fixing the position of the slide plate on the workbench . The slide plate moves on the workbench for preliminary adjustment of the position of the fixture seat; the fixture seat moves along the slide plate for precise adjustment of the fixture seat.

Preferably, the top surface of the slide plate has a guide rail adapted to the sliding of the fixture seat, which is used for sliding guidance of the fixture seat and reduces movement resistance.

Preferably, the tensioning mechanism includes a bracket fixed at one end of the slide plate, and a push actuator assembled on the bracket.

In order to ensure the rigidity of the workpiece during processing, after the workpiece is clamped by the clamping part, the actuator is pushed to push the clamp seat to move along the slide plate to ensure that the workpiece is in a tight state. The said pushing actuators include but not limited to hydraulic cylinders and air cylinders.

Preferably, the tensioning mechanism is arranged at both ends of the slide plate, and can tension the workpiece by internal pressure or external push.

Preferably, a flexible fixture installation slot is provided in the middle of the workbench for installing a flexible fixture to increase the tension strength of the workpiece.

The utility model has a simple structure, can turn over the processing object without disassembly, can realize 360° turning, expands the processing range, saves man-hours and materials, has an adjustable processing range, and has a tightening function to ensure processing feasibility.

Description of drawings

Fig. 1 is the structural diagram of the fourth axis rotary table in the utility model;

Fig. 2 is the front view of the fourth axis rotary table in the utility model;

Figure 3 is a partial installation diagram of the tensioning mechanism;

Fig. 4 is the working mode diagram of existing workbench;

Fig. 5 is a diagram of the working mode of the fourth axis rotary table in the utility model;

Fig. 6 is another working state diagram of the fourth-axis rotary table in the utility model.

In the figure: fixture seat 1, fixture seat 2, slide plate 3, guide rail 4, slide table 5, rotating fixture 6, tensioning mechanism 7, positioning hole 8, flexible fixture installation groove 9, workbench 10, pushing actuator 11 and working Taiwan 12.

detailed description

As shown in Figures 1 to 3, a telescopic fourth-axis rotary workbench includes a workbench 10 and a fixture seat 1 and a fixture seat 2 installed on the workbench 10, and the fixture seat 1 is fixed on one side of the workbench 10 , the fixture seat 2 is slidably fitted on the workbench 10, and the distance between the two fixture seats is adjusted by moving the fixture seat 2, so as to adapt to the installation and fixation of workpieces of different lengths. Rotating fixtures 6 that rotate synchronously are respectively housed in the two fixture seats. Each rotating fixture 6 includes a turntable rotatably fitted in the fixture seat and a clamping portion arranged on the turntable. The holding portions on the two rotating fixtures are oppositely arranged. , the synchronously moving turntable is driven by a motor installed on the fixture base, and the clamping part clamps both ends of the workpiece. In this embodiment, the vise is used as the clamping part of the rotary clamp.

The fixture seat 2 is installed in the slide plate 3 through the slide table 5 at the lower part. The slide plate 3 can slide on the workbench 10. The slide plate 3 and the workbench 10 are provided with positioning holes 8 that cooperate with each other. By inserting the bolts in the positioning holes 8, the The slide plate 3 is fixed on the workbench 10. Since the hole spacing is 100 mm, that is, the minimum range of each movement of the slide plate 3 is suitable for preliminary adjustment of the position of the fixture seat 2. The top surface of the slide plate 3 is provided with a guide rail 4, and the slide 5 slides along the guide rail 4 for precisely controlling the position of the fixture seat 2 to adapt to the length of the workpiece.

As shown in FIG. 2 and FIG. 3 , tensioning mechanisms 7 are provided at both ends of the slide plate 3 for pushing the clamp seat 2 to tension the workpiece. The tensioning mechanism 7 includes a bracket fixed at one end of the slide plate 3 and a push actuator 11 assembled on the bracket. In order to ensure the rigidity of the workpiece during processing, after the workpiece is clamped by the clamping part, the actuator 11 is pushed to push the clamp seat 2 to move along the slide plate 3 to ensure that the workpiece is in a tight state. The push actuator 11 in this embodiment adopts a hydraulic oil cylinder, and the tension mechanism 7 can also prevent the clamp seat 2 from sliding out of the slide plate 3 .

In this embodiment, if the strength is not enough, a flexible fixture installation groove 9 with a width of 50 mm is further provided in the middle of the workbench 10 for installing a flexible fixture to increase the tension strength of the workpiece.

As shown in Figure 4, the workpiece processing steps of the existing fourth-axis rotary table are: part blanking - rough machining part reference - processing technology clamping hole - machining the front of the part - using tooling to process the reverse side of the part --Finish. The size of the raw material is restricted by the position of the tooling on the workbench, such as T-slots, tooling holes, etc., and the cutting must be enlarged, and the waste of raw materials is ≥ 10%.

As shown in FIG. 5 , the processing steps of the fourth-axis rotary table in this embodiment are: part blanking—processing of the front and back sides of the part (without special tooling)—end. The machining time of the same machine tool can be reduced to at least 80% (including the clamping and alignment time). The workbench 12 of the existing fourth-axis rotating device is removed, and the clamping is realized by the vise. The raw materials of the clamping part can save more than 6% of raw materials. At the same time, the distance between the two fixture seats can also be adjusted according to workpieces of different sizes, as shown in FIG. 6 .

The above descriptions are only examples of the preferred implementation of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the present utility model. within the scope of the new protection.

Claims (8)

1. a telescopic 4th axle rotary table, comprises workbench and installs two clamping fixture seats on the table, it is characterized in that: respectively synchronous axial system is housed in two clamping fixture seats and for the rolling clamp of holding workpiece;

At least one clamping fixture seat is slidably matched on the table, for adapting to the workpiece of different size;

Described workbench is provided with and promotes clamping fixture seat slip with the strainer of tensioning workpiece.

2. the 4th axle rotary table as claimed in claim 1, is characterized in that: each rolling clamp comprises the rotating disk be rotatably matched with in corresponding clamping fixture seat, and is arranged on the clamping part on rotating disk, the relative setting of the clamping part on two rolling clamps.

3. the 4th axle rotary table as claimed in claim 1, is characterized in that: one of them clamping fixture seat is fixing on the table, and another clamping fixture seat is slidably matched on the table.

4. the 4th axle rotary table as described in claim 1 or 3, it is characterized in that: described workbench is equipped with slide plate, the clamping fixture seat be slidably matched with workbench is movably arranged on slide plate;

Described slide plate and workbench are provided with the locating hole cooperatively interacted, for fixed glides position on the table.

5. the 4th axle rotary table as claimed in claim 4, is characterized in that: described slide plate end face has the guide rail adapting to clamping fixture seat and slide.

6. the 4th axle rotary table as claimed in claim 4, is characterized in that: described strainer comprises the support being fixed on slide plate one end, and is assemblied in the promotion executive component on support.

7. the 4th axle rotary table as claimed in claim 6, is characterized in that: described strainer is arranged in the two ends of slide plate.

8. the 4th axle rotary table as claimed in claim 1, is characterized in that: the middle part of described workbench is provided with flexible fixture mounting groove.