CN106735485A - Circular table T-slot milling attachment and method for milling - Google Patents

Abstract

The invention discloses a T-shaped groove milling device and a milling method of a circular workbench, comprising a milling head, a beam, a clamping block, and a rotating disk. The rotating disk is installed in the center of a workpiece, and the lower part of the rotating disk is a cylindrical surface. It can be matched with the inner hole of the workpiece; the clamping block is placed at different positions along the circumferential direction of the workpiece, and fixed together with the workpiece after the position is determined; one end of the beam is installed on the rotating disk, and the other end is installed On the clamping block, the milling head is installed on the beam and can move back and forth along the beam in the horizontal direction, and the milling head has its own power to drive the milling cutter to rotate; at the same time, the milling head It can also move up and down in the vertical direction to adjust the position of the milling cutter.

Description

T-slot milling device and milling method for circular workbench

technical field

The invention discloses a T-shaped groove milling device and a milling method of a circular workbench.

Background technique

The shape of the workbench of a general vertical lathe is shown in Figure 1 and Figure 2: There are many T-shaped grooves distributed on the worktable, and the grooves are symmetrically distributed, some of which are parallel or perpendicular to each other, and the symmetrical planes of most T-shaped grooves pass through the center of the circle and are distributed radially. . The working table has a diameter of 3.6 meters and a weight of 1.8 tons. The processing procedure is as follows:

1) Turning work table, outer cylindrical surface, inner hole;

2) Milling the T-slot of the table. Due to the large volume of the workpiece, its T-slot machining is usually carried out on a large gantry milling machine.

Several parallel and vertical T-slots can be completed in one clamping. When processing radially distributed T-slots, it is necessary to change the position of the workpiece many times. The weight of the workpiece is heavy, and it is inconvenient to move and locate. In order to process all T-shaped slots in one clamping, only high-end vertical machining centers can be used, which requires large equipment investment and high processing costs.

Contents of the invention

In order to solve the technical problems raised in the background technology section, the present invention discloses a T-shaped groove milling device and a milling method of a circular worktable. The present invention adopts the method of "ants gnawing bones" to mill T-shaped grooves. The workpiece does not need to be clamped, and the milling device is directly fixed on the workpiece.

In order to achieve the above object, the present invention provides a T-shaped groove milling device for a circular worktable, which includes a milling head, a beam, a clamping block, and a rotating disk. The rotating disk is installed in the center of the workpiece, and the lower part of the rotating disk It is a cylindrical surface, which can be matched with the inner hole of the workpiece; the clamping block is placed at different positions along the circumferential direction of the workpiece, and fixed with the workpiece after the position is determined; one end of the beam is installed on the rotating disk , the other end is installed on the clamping block, the milling head is installed on the beam, and can move back and forth along the beam in the horizontal direction, and the milling head has its own power to drive the milling cutter to rotate ; At the same time, the milling head can also move up and down in the vertical direction to adjust the position of the milling cutter.

Further, three sets of locating pins are installed on the rotating disc, and the beam is installed in three different positions through the three sets of locating pins, so as to cooperate with the rotation of the rotating disc to realize T-slots in different positions on the workpiece. processing.

Further, each set of positioning pins is installed on the same straight line, and the three lines formed by the three sets of positioning pins are parallel to each other.

Further, two sets of positioning pins are located on the same side of the centerline of the rotating disk, and the other set of positioning pins are located on the other side of the centerline of the rotating disk. This structure is mainly to meet the different distances between the parallel T-slots on the workpiece. And designed.

Further, each set of positioning pins includes a cylindrical pin and a trimmed pin, and the bottom of the beam is provided with two positioning holes, and the two positioning holes are matched with the cylindrical pin and the trimmed pin respectively to realize the fixing of the beam.

Further, the rotating disk is fixed in the inner hole of the workpiece through a clamping device, and the rotating disk can be rotated by loosening the clamping device.

In order to achieve the above object, the present invention also provides a method for milling a workpiece using a circular workbench T-shaped slot milling device, comprising the following steps:

1) Place the workpiece directly on the ground or on the cushion block to maintain a suitable height;

2) Place the rotating disk in the inner hole of the workpiece that has been turned. There are multiple sets of positioning pins and clamping devices installed on the rotating disk, and the rotating disk is locked by the clamping device;

3) Install the clamping block on a certain position of the workpiece along the circumferential direction of the workpiece and lock it;

4) Lift the beam and the milling head assembly, place one end of the beam on the rotating disk and cooperate with a certain set of positioning pins, place the other end on the clamping block and tighten the connecting screws; fix the beam;

5) Adjust the milling head to a suitable position, first process the retraction hole close to the center of the circle, and then replace it with an end mill and a T-slot milling cutter to process the T-slot side and working surface respectively.

6) After processing one T-shaped slot, loosen the clamping device of the rotating disk and the locking screw on the clamping block, so that the beam, milling head and clamping block rotate around the rotating disk to a suitable position, and then lock After tightening the rotating disc and the clamping block, the second T-slot can be processed until all the T-slots at the corresponding positions are processed;

7) Lift the beam and the milling head assembly to cooperate with another set of positioning pins, repeat the above steps, and process T-shaped slots at other positions.

Furthermore, when the rotating disc is fixed and only the position of the beam is adjusted to match with different sets of positioning pins, the processing of T-shaped slots parallel to each other can be realized.

Furthermore, when the beam is matched with a certain set of positioning pins, and then the rotating disk is rotated, the processing of T-shaped grooves distributed along the same circle with different radius directions can be realized.

Further, by adjusting the spacing between different groups of positioning pins, the distance adjustment between the T-shaped slots parallel to each other can be realized.

The working principle of the present invention:

1) The T-slot is milled using the "ants gnawing on the bone" method. The workpiece does not need to be clamped, and the milling device is directly fixed on the workpiece.

2) The crossbeam cooperates with three sets of positioning pins in different positions to complete the processing of three kinds of T-shaped slots with different positions relative to the center of the circle.

3) The beam, milling head, etc. can rotate around the center of the workpiece through the rotating disk to achieve indexing, and process multiple T-shaped slots symmetrically distributed in the circumferential direction.

4) The present invention does not need to use large-scale equipment, and the milling device is small in size and light in weight, thereby reducing processing costs.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are For some embodiments of the present invention, those skilled in the art can also obtain other drawings based on these drawings without any creative work.

Figure 1 and Figure 2 are the T-slots of the circular workbench;

Fig. 3 schematic diagram of milling device structure;

Figure 4 is a schematic diagram of a positioning element;

In the figure: 1 beam, 2 milling head, 3 positioning pin, 3-1 cylindrical pin, 3-2 chamfering pin, 4 clamping device, 5 rotating disc, 6 positioning pin, 6-1 cylindrical pin, 6-2 cutting pin Side pins, 7 clamping blocks, 8-1 cylindrical pins, 8-2 trimming pins, 9 cylindrical surfaces.

detailed description

It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. 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 application belongs.

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

The structure and working principle of the milling device of the present invention:

As shown in Figure 2, the milling device is composed of a beam 1, a milling head 2, a positioning pin 3, a positioning pin 6, a clamping device 4, a rotating disc 5 and a clamping block 7, etc. Its structure is as follows:

As shown in Fig. 3 and Fig. 4, a round table T-shaped slot milling device includes a milling head 2, a beam 1, a clamping block 7, a rotating disk 5, a positioning pin 3 and a positioning pin 6, and the rotating The disk 5 is installed in the center of the workpiece, and the lower part of the rotating disk 5 is a cylindrical surface, which can be matched with the inner hole of the workpiece; the clamping block 7 is placed at different positions along the circumferential direction of the workpiece, and is fixed with the workpiece after the position is determined; One end of the beam 1 is installed on the rotating disk, and the other end is installed on the clamping block 7, and the milling head 2 is installed on the beam, and can be moved horizontally along the beam. The direction moves back and forth, and the milling head has its own power to drive the milling cutter to rotate; at the same time, the milling head can also move up and down in the vertical direction to adjust the position of the milling cutter.

The present invention adopts the method of "ant gnawing the bone" to mill the T-shaped groove. The workpiece does not need to be clamped, and the milling device is directly fixed on the workpiece.

Further, three sets of locating pins are installed on the rotating disk 5, which are respectively (straight pin 3-1, trimming pin 3-2; cylindrical pin 6-1, trimming pin 6-2; cylindrical pin 8-1, trimming pin The beam described in pin 8-2) is installed in three different positions by three groups of positioning pins, and cooperates with the rotation of the rotating disc to realize the processing of T-shaped grooves in different positions on the workpiece.

In accompanying drawing 3, crossbeam is installed on cylindrical pin 8-1, trimming pin 8-2, and the bottom of crossbeam 1 is provided with two positioning holes, and two positioning holes cooperate with cylindrical pin and trimming pin respectively, realize crossbeam fixed.

Further, each set of positioning pins is installed on the same straight line, and the three lines formed by the three sets of positioning pins are parallel to each other; the crossbeam 1 cooperates with the three sets of positioning pins in different positions to complete three kinds of T with different positions relative to the center of the circle. Groove processing.

Further, two sets of positioning pins are located on the same side of the centerline of the rotating disk, and the other set of positioning pins are located on the other side of the centerline of the rotating disk. This structure is mainly to meet the different distances between the parallel T-slots on the workpiece. and designed; of course, in specific applications, it can be designed according to the different requirements of different workpieces for different positions of T-slots.

The rotating disk 5 is fixed in the inner hole of the workpiece through the clamping device 4 , and the rotating disk 5 can be rotated by releasing the clamping device 4 . The clamping device 4 includes a clamping platen, a tension bolt, etc., and its main function is to clamp the rotating disk 5 .

The specific positioning principle and processing method are as follows:

1. Milling head movement

The milling head 2 can move along the guide rail of the beam 1, the servo motor and the reduction mechanism drive the milling head to realize the feed movement; the milling head has its own power to drive the milling cutter to rotate; the milling head can also move up and down in the vertical direction to adjust the position of the milling cutter .

2. Positioning principle

The lower part of the rotating disc 5 is a cylindrical surface, which can be matched with the inner hole of the workpiece. There are 3 sets of positioning pins on the upper end surface (see Figure 3), and there are 2 positioning cylindrical holes on the inner bottom surface of the beam. When positioning the beam, one set of positioning pins should be inserted. Insert into the 2 positioning holes. When the positioning pin 3 and a group of similar positioning pins are used, it is used to process two parallel T-shaped slots; when the rotating disc is turned through a certain angle, and the positioning hole on the bottom surface of the beam is matched with the positioning pin 6, the processing can be guaranteed. The symmetrical plane of the T-slot passes through the center of the circle.

3. Processing process

1) Place the workpiece directly on the ground or on the spacer to maintain a suitable height. Since the workpiece is heavy, no clamping is required.

2) Place the rotating disk 5 in the inner hole of the workpiece that has been turned. The positioning pins 3 and 6 and the clamping device 4 have been installed on the rotating disk 5. There are clamping platens, tension bolts, etc. under the clamping device 4, and the lock After tightening, it is beneficial to improve the rigidity of the system and reduce the vibration during cutting.

3) Lift the crossbeam 1 and the milling head 2 assembly, place the internal test on the rotating disk 5, and cooperate with the positioning pin 3 or 6, place the other end on the clamping block 7 and tighten the connecting screws. The positioning block 7 can be placed in different positions along the circumference of the workpiece, and can also be fixed together with the workpiece after the position is determined.

4) During processing, it is necessary to lock the clamping block 7 and the clamping device 4, adjust the milling head 2 to a suitable position, first process the retraction hole close to the center of the circle, and then replace it with an end mill and a T-shaped slot milling cutter to process T Tank side and working surface.

5) After processing one T-shaped slot, loosen the locking screws of the clamping device 4 and the clamping block 7, so that the beam 1, the milling head 2 and the clamping block 7 are rotated around the rotating disk 5 to a suitable position. (A special angle detection tool or marking line is required), after locking 4 and 7, the second T-slot can be processed until the processing of all T-slots at the corresponding position is completed.

6) Lift the beam 1 and the milling head 2 assembly to cooperate with another set of positioning pins, repeat the above steps, and process T-shaped slots at other positions.

Furthermore, when the rotating disc is fixed and only the position of the beam is adjusted to match with different sets of positioning pins, the processing of T-shaped slots parallel to each other can be realized.

Furthermore, when the beam is matched with a certain set of positioning pins, and then the rotating disk is rotated, the processing of T-shaped grooves distributed along the same circle with different radius directions can be realized.

Further, by adjusting the spacing between different groups of positioning pins, the distance adjustment between the T-shaped slots parallel to each other can be realized.

From the above description, it can be seen that the above-mentioned embodiments of the present application have achieved the following technical effects:

3) Milling T-shaped slots using the method of "ants gnawing bones". The workpiece does not need to be clamped, and the milling device is directly fixed on the workpiece.

4) The crossbeam cooperates with the positioning pins in different positions to complete the processing of three kinds of T-shaped slots with different positions relative to the center of the circle.

3) The beam, milling head, etc. can rotate around the center of the workpiece to achieve indexing and process multiple T-shaped slots symmetrically distributed in the circumferential direction.

4) The present invention does not need to use large-scale equipment, and the milling device is small in size and light in weight, thereby reducing processing costs. Description of drawings

Although the specific implementation of the present invention has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the present invention. Those skilled in the art should understand that on the basis of the technical solution of the present invention, those skilled in the art do not need to pay creative work Various modifications or variations that can be made are still within the protection scope of the present invention.

Claims (10)

1. a kind of circular table T-slot milling attachment, it is characterised in that described including milling head, crossbeam, gripping block, rotation dish Rotation dish be arranged on workpiece center, rotation dish bottom is the face of cylinder, can be engaged with inner hole of workpiece；Described gripping block edge Workpiece circumferencial direction is placed on diverse location, is fixed together with workpiece after determining position；One end of described crossbeam is arranged on In described rotation dish, the other end is arranged in described gripping block, and described milling head is arranged on described crossbeam, can be along The crossbeam moves back and forth in the horizontal direction, and the self-powered driving milling cutter of the milling head is rotated；Milling head also can be along vertical simultaneously Direction moves up and down, to adjust milling cutter position.

2. circular table T-slot milling attachment as claimed in claim 1, it is characterised in that installed in described rotation dish There are three groups of alignment pins, described crossbeam is arranged on three different positions and coordinates turning for rotation dish by three groups of alignment pins It is dynamic, realize on workpiece positioned at diverse location T-slot processing.

3. circular table T-slot milling attachment as claimed in claim 2, it is characterised in that each group of alignment pin is arranged on On same straight line, three straight lines that three groups of described alignment pins are formed are parallel to each other.

4. circular table T-slot milling attachment as claimed in claim 2, it is characterised in that wherein two groups alignment pins are located at The same side of rotation dish center line, another set alignment pin is located at the opposite side of rotation dish center line.

5. circular table T-slot milling attachment as claimed in claim 2, it is characterised in that each group of alignment pin includes Individual straight pin and a chamfered edge pin, the bottom of described crossbeam are provided with two location holes, two location holes respectively with straight pin and Chamfered edge pin coordinates, and realizes the fixation of crossbeam.

6. circular table T-slot milling attachment as claimed in claim 1, it is characterised in that described rotation dish is by folder Tight device is fixed in inner hole of workpiece, unclamps clamping device, can be with rotary motion disk.

7. a kind of side for carrying out milling to workpiece using any described circular table T-slot milling attachments of claim 1-6 Method, it is characterised in that comprise the following steps：

1) workpiece is directly placed on ground or is placed on cushion block, keep suitable height；

2) rotation dish is placed in the endoporus that workpiece turning is finished, multigroup alignment pin and folder is already installed with rotation dish Tight device, rotation dish is locked by clamping device；

3) by gripping block is along a certain position for being circumferentially mounted at workpiece of workpiece and locks；

4) crossbeam and milling head component are sling, one end of crossbeam is placed in rotation dish, and with a certain group of detent fit, separately One end is placed in gripping block and tightens each attachment screw；Crossbeam is fixed；

5) milling head is transferred to correct position, is first processed near the withdrawing hole in the center of circle, then change slotting cutter and T-slot cutter adds respectively Work T grooves side and working face.

6) after completing 1 T-slot of processing, the lock-screw on the clamping device and gripping block of rotation dish is unclamped, makes crossbeam, milling head And after gripping block etc. turns to correct position around rotation dish together, after locking rotation dish and gripping block, second T-slot can be carried out Processing, until complete relevant position on all T-slots processing；

7) crossbeam 1 and the component of milling head 2 and another group of detent fit are lifted, above step is repeated, it is T-shaped in processing other positions Groove.

8. the method that such as claim 7 workpiece carries out milling, it is characterised in that when rotation dish is maintained static, only adjust crossbeam Position, when making its detent fit from different groups, it is possible to achieve the processing of the T-slot being parallel to each other.

9. the method that such as claim 7 workpiece carries out milling, it is characterised in that when crossbeam is with a certain group of detent fit, so Rotary motion disk afterwards, it is possible to achieve along the processing of the T-slot of same round different radii directional spreding.

10. the method for carrying out milling such as claim 7 workpiece, it is characterised in that by adjusting between different groups of alignment pin Spacing, it is possible to achieve the distance between T-slot being parallel to each other is adjusted.