CN111347267A - Pipe part drilling clamp - Google Patents

Abstract

The invention relates to a drilling fixture for pipe parts. The pipe parts drilling fixture includes a base for fixing on a suitable machine tool, a rotating frame is rotatably mounted on the base, and a rotating scale for measuring the rotation angle of the rotating frame is provided on the base and/or the rotating frame. There is a clamping structure for cooperating to clamp and fix the pipe parts to be processed. The clamping structure includes at least one movable clamping piece, and also includes a chuck for driving the pipe parts to be processed to rotate. The chuck is connected with the movable clamp. The clamping pieces are arranged at intervals along the axial direction of the chuck, and the rotary frame and/or the chuck are provided with a rotation scale for measuring the rotation angle of the pipe parts to be processed driven by the chuck. The pipe parts drilling fixture has the advantages of convenient operation, simple structure and high machining accuracy, and can realize the machining of holes of different angles in the circumferential direction and the axial direction of the pipe parts, and is very practical.

Description

Drilling jig for pipe parts

technical field

The invention relates to a drilling fixture for pipe parts.

Background technique

At present, in the machinery industry, it is often necessary to drill different angles on pipe parts, and these holes often require precise positional relationships before machining, including the axial linear positional relationship and the angular positional relationship on the radial circumference. Existing methods mainly use scribing and general drilling fixtures or CNC machining to process holes with different angles on pipe parts, but these two methods have their own differences in machining accuracy, production cost, and labor intensity. insufficient.

In view of the shortcomings of the above two methods, the Chinese invention patent with the authorization announcement number CN103658762B discloses a radially precise drilling fixture for linear cylindrical parts. The drilling jig includes a base, an indexing head is arranged on the base, and a three-jaw chuck capable of fixing one end of a cylindrical part is installed on the indexing head; a track is also arranged on the base, and a slider is arranged on the track. A stud is installed on the side, and a pressure plate is fixed on the top of the stud; a drilling bracket that can slide on the base is also movably arranged on the base. The above-mentioned drilling fixture can precisely adjust the angle in the circumferential direction of cylindrical parts through the indexing head, and the drilling bracket can precisely locate the axial position of cylindrical parts. However, the drilling fixture cannot adjust the axial direction of cylindrical parts. Angled holes (such as inclined holes) are not suitable for some special cylindrical parts that need to machine holes with different angles in the axial direction.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a drilling fixture for pipe parts, so as to solve the technical problem that the drilling fixture in the prior art cannot simultaneously process holes with different angles in the circumferential direction and the axial direction of the pipe parts.

In order to achieve the above purpose, the technical scheme of the pipe parts drilling fixture provided by the present invention is as follows: the pipe parts drilling fixture includes a base for fixing on a matching machine tool, and a rotating frame is rotatably assembled on the base, and the base and /or the rotating frame is provided with a rotating scale for measuring the rotation angle of the rotating frame, and the rotating frame is provided with a clamping structure for cooperating with clamping and fixing the pipe parts to be processed, the clamping structure includes at least one movable clamping piece, and also includes A chuck for driving the rotation of the pipe parts to be processed, the chuck and the movable clamping part are arranged at intervals along the axial direction of the chuck, and the rotating frame and/or the chuck are provided with a rotating frame for measuring the rotation angle of the pipe parts to be processed. Rotation scale.

The beneficial effects of the present invention are as follows: the base of the pipe parts drilling fixture is rotatably assembled with a rotating frame, and the rotating frame and/or the base is provided with a rotating scale for measuring the rotation angle of the rotating frame, that is, when the pipe parts to be processed are in After being fixed and clamped, the entire tube parts to be processed can be rotated in the axial direction by rotating the rotary frame. When holes with different angles need to be processed, it can be achieved by adjusting the rotation angle; A chuck that rotates the pipe parts to be processed along its axial direction, and the rotary frame and/or the chuck has a rotary scale for measuring the rotation angle of the pipe parts to be processed, that is, it can realize the different angles of the pipe parts to be processed in the circumferential direction. hole machining. The whole casing parts drilling fixture realizes the axial and circumferential rotation of the pipe parts to be processed through the action of the rotating frame and the chuck set on it, so that it can not only process the holes of different angles in the axial direction of the pipe parts to be processed It can also handle the processing of holes with different angles on the circumference of the processing pipe parts, and the whole casing drilling fixture is easy to operate, simple in structure, and high in processing accuracy, which is very practical.

Further, the clamping structure includes a fixed clamping piece fixed on the rotating frame, and the fixed clamping piece cooperates with the movable clamping piece to fix the pipe parts to be processed.

The beneficial effect is that the clamping mechanism includes a movable clamping piece and a fixed clamping piece, which is beneficial to the clamping of the pipe parts to be processed, and also facilitates the adjustment of the clamping angle of the pipe parts to be processed.

Further, the movable clamp is connected with a screw rod for driving the movable clamp to move toward or away from the fixed clamp.

The beneficial effects are: the movable clamping piece is driven by a screw rod, which is more convenient and labor-saving during manual operation.

Further, the movable clamping piece and the fixed clamping piece are both V-shaped blocks, and the two V-shaped blocks are clamped and fixed to the pipe parts to be processed by means of upper and lower clamping.

The beneficial effects are: the V-shaped block has two positioning surfaces, which is convenient for clamping the pipe parts, and does not need a special fixture.

Further, the pipe parts drilling fixture also includes a gantry structure arranged on the revolving frame, and the gantry structure includes a support plate arranged in parallel with the revolving frame and a support rod erected between the support plate and the revolving frame, the The screw rod penetrates through the support plate and is connected with the movable clamping piece.

The beneficial effect is that the screw rod is connected with the movable clamping block and penetrates the support plate, which is conducive to the placement of the movable clamping block, and there is no need to manually remove the movable clamping block during use, and the support rod is used to support the support plate to make it more stable.

Further, the rotating frame includes an indexing head for fixing the chuck, and the rotating scale is provided on the indexing head.

The beneficial effects are: the chuck is fixed on the indexing head and the indexing head has a rotary scale, which can measure the angle at which the chuck drives the pipe parts to be processed to rotate along its circumferential direction, so as to more accurately determine the position of the pipe parts to be processed. Angle holes required for circumferential machining.

Further, the rotation center axis of the rotating frame extends vertically, and the rotation center axis of the chuck extends horizontally.

The beneficial effect is that the processing of holes with different angles in the circumferential direction and the axial direction of the pipe parts to be processed which are clamped in the horizontal direction can be realized.

Further, the base is provided with positioning holes arranged at intervals along the circumferential direction on the outer side of the rotating scale, the rotating frame is provided with corresponding arc-shaped long holes, and the rotating frame is simultaneously penetrated into the arc-shaped long holes by tightening screws. The positioning on the base is realized in the hole and the positioning hole.

The beneficial effect is that the base is provided with positioning holes arranged at intervals along the circumferential direction on the outer side of the rotating scale, so that the pipe parts to be processed can be effectively positioned on the base when processing holes of different axial angles.

Description of drawings

Fig. 1 is the front view of the pipe parts drilling fixture provided by the present invention;

Fig. 2 is the top view of the pipe parts drilling fixture provided by the present invention;

Fig. 3 is the side view of the pipe parts drilling fixture provided by the present invention;

FIG. 4 is a schematic diagram of the use of the pipe parts drilling fixture provided by the present invention in cooperation with a machine tool.

In the picture: 1-base, 2-rotating frame, 3-lower V-block, 4-upper V-block, 5-support rod, 6-support plate, 7-screw rod, 8-three-jaw chuck, 9- Indexing head, 10-pipe parts to be processed, 11-rotating scale, 12-machine tool, 13-rotating seat, 14-extension section, 15-rotating shaft, 16-positioning hole, 17-fastening screw, 18-arc Long hole.

Detailed ways

The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings, but not limited thereto.

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the specific embodiment of the pipe parts drilling fixture provided by the present invention includes a base 1 fixed on a suitable machine tool 12, The base 1 is provided with a rotating frame 2 , and the rotating frame 2 is rotatably assembled on the base 1 through its own rotating shaft 15 . The base 1 is provided with a rotation scale 11 for measuring the rotation angle of the rotating frame 2 , and the base 1 is provided with positioning holes 16 arranged at intervals of half a circle on the outside of the circumference of the rotation scale 11 . The swivel frame 2 includes a swivel base 13 and an extension section 14 that is integral with the swivel base 13 and protrudes out of the swivel base 13. The extension section 14 is provided with an arc-shaped elongated hole 18 corresponding to the positioning hole 16. The arc-shaped elongated hole 18 and corresponding Fastening screws 17 are simultaneously inserted into the positioning holes 16 to position the entire rotating frame 2 on the base 1 ; the rotating frame 2 is provided with a clamping structure for cooperating and fixing the pipe parts 10 to be processed.

The clamping structure includes a fixed clamping piece fastened and assembled on the rotating base 13 by screws and a movable clamping piece used in cooperation with the fixed clamping piece. As shown in FIG. 1 , in this embodiment, the fixed clamping piece is the lower part. V-shaped block 3, the movable clamping member is the upper V-shaped block 4, and the two clamping members clamp and fix the pipe parts 10 to be processed by means of upper and lower clamping. Since the V-shaped block has two positioning surfaces, it is more convenient to clamp pipe parts without special clamps. The swivel base 13 is also provided with a gantry structure. The gantry structure includes a support plate 6 and four support rods 5 erected between the support plate 6 and the swivel base 13. The upper V-shaped block 4 is arranged on the support plate 6 and the swivel Between the seats 13, and the upper V-shaped block 4 is fixedly connected with a screw rod 7, the screw rod 7 penetrates the support plate 6 and is connected with the upper V-shaped block 4, and the upper V-shaped block 4 is driven by screwing the screw rod 7 to support. The plate 6 and the rotating seat 13 move toward or away from the lower V-shaped block 3 .

As shown in FIG. 2 , the clamping structure further includes an indexing head 9 fixed on the extension section 14 of the rotating frame 2 , and the indexing head 9 is rotatably equipped with a rotating device that can be used to drive the pipe parts 10 to be processed to rotate along its circumferential direction. The three-jaw chuck 8 has a certain interval between the three-jaw chuck 8 and the above-mentioned upper and lower V-shaped blocks in the axial direction of the three-jaw chuck 8 . The indexing head 9 is provided with a rotation scale for measuring the rotation angle of the pipe parts 10 to be processed.

In this embodiment, the rotation center axis of the rotating frame 2 extends vertically, and the rotation center axis of the chuck extends horizontally.

As shown in FIG. 4 , when the pipe parts drilling fixture is clamped, one end of the pipe parts 10 to be processed is clamped and fixed by the three-jaw chuck 8 , and the other end passes through the V-shaped part on the lower V-shaped block 3 . The groove is in contact with the two positioning surfaces on the lower V-shaped block 3, and the screw 7 is rotated to make the upper V-shaped block 4 move downward and the lower V-shaped block 3 to press the pipe parts 10 to be processed together. At this time, the pipe to be processed is Class 10 parts are finished.

When the pipe parts 10 to be processed need to be machined or milled in different directions of the circumference, it is necessary to rotate the screw 7 to loosen the upper V-shaped block 4 and rotate the three-jaw chuck 8 to realize the circumference of the pipe parts 10 to be processed. When the pipe part 10 to be processed is rotated to the angle required to be processed in the circumferential direction corresponding to the rotation scale on the indexing head 9, that is, it is rotated in place. At this time, the screw 7 is rotated to press the upper V-shaped block 4 downward. The tube-like parts 10 to be processed immediately can be processed by the machine tool 12 after being pressed.

When the pipe parts 10 to be processed need to be machined with inclined holes in the axial direction, loosen the fastening screws 17, and then rotate the rotary frame 2 to realize the rotation of the entire pipe parts 10 to be processed in the axial direction. 10 is rotated in its axial direction until the required processing angle corresponds to the rotation scale 11 on the base 1, that is, it is rotated in place. At this time, the fastening screw 17 is inserted into the arc-shaped long hole 18 and the corresponding positioning hole 16. , the entire rotating frame 2 can be positioned by screwing the tightening screw 17, and then the machine tool 12 can be used for processing.

The drilling fixture is simple in structure, convenient in operation, and has higher machining accuracy compared with the traditional scribing method, greatly reduces labor intensity, and can realize the machining of holes with different angles in the circumferential and axial directions of pipe parts.

In the above-mentioned embodiment, the pipe parts to be processed are clamped and fixed by the upper and lower V-shaped blocks. Fixed clamping.

In the above-mentioned embodiment, the rotation scale is arranged on the base. In other embodiments, the rotation scale may not be arranged on the base, but is arranged on the rotating seat of the rotating frame.

In the above embodiment, the rotary scale is provided on the indexing head. In other embodiments, the rotary scale may not be provided on the indexing head, but a chuck with a rotary scale is used.

Claims (8)

1. Pipe part boring grab, its characterized in that: including being used for fixing the base on the adaptation lathe, rotatable being equipped with the swivel mount on the base, be equipped with the rotatory scale that is used for measuring swivel mount rotation angle on base and/or the swivel mount, be equipped with on the swivel mount and be used for cooperating the fixed clamping structure who treats processing pipe class part of centre gripping, clamping structure includes at least one activity holder, still including being used for the drive to treat the chuck that processing pipe class part gyration, the chuck with the activity holder is arranged along chuck axial interval, is equipped with the gyration scale that is used for measuring processing pipe class part gyration angle on swivel mount and/or the chuck.

2. The pipe part drilling jig of claim 1, wherein: the clamping structure comprises a fixed clamping piece fixedly arranged on the rotating frame, and the fixed clamping piece is matched with the movable clamping piece to fix the pipe part to be processed.

3. The pipe part drilling jig of claim 2, wherein: and the movable clamping piece is connected with a screw rod used for driving the movable clamping piece to move towards or away from the fixed clamping piece.

4. The pipe part drilling jig of claim 3, wherein: the movable clamping piece and the fixed clamping piece are both V-shaped blocks, and the two V-shaped blocks clamp and fix the pipe part to be processed in an up-down butt-clamping mode.

5. The pipe part drilling jig of claim 3, wherein: the pipe part drilling fixture further comprises a portal structure arranged on the rotating frame, the portal structure comprises a supporting plate arranged in parallel with the rotating frame and a supporting rod vertically arranged between the supporting plate and the rotating frame, and the lead screw penetrates through the supporting plate and is connected with the movable clamping piece.

6. The pipe part drilling jig according to any one of claims 1 to 5, wherein: the rotating frame comprises a dividing head used for fixing the chuck, and the dividing head is provided with the rotary scales.

7. The pipe part drilling jig according to any one of claims 1 to 5, wherein: the rotation central axis of the rotating frame extends along the vertical direction, and the rotation central axis of the chuck extends along the horizontal direction.

8. The pipe part drilling jig according to any one of claims 1 to 5, wherein: the base is provided with positioning holes arranged at intervals along the circumferential direction on the outer side of the rotary scale, the rotary frame is provided with arc-shaped long holes corresponding to the positioning holes, and the rotary frame penetrates through the arc-shaped long holes and the positioning holes simultaneously through fastening screws to realize positioning on the base.

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