CN202752896U - Three-translocation multi-station location clamping device special for machining pump cover - Google Patents

Abstract

The utility model relates to a positioning and clamping device for processing pump covers, in particular to a three-reversing and multi-station positioning and clamping device for processing pump covers. The traditional pump cover processing is to use three independent molds to process the three processing planes of the positive, negative and 40° angles of the part, which need to be clamped three times and processed separately. The tool is replaced repeatedly, and the positioning error is large, and only one piece can be processed each time. artifact. The rotating shaft of the utility model is fixed on the base plate through the front and rear bearing seats, and the rotating shaft and the processing platform are connected together by a connecting block, so that the processing platform rotates around the rotating shaft, and the positioning and fixing are realized by the positioning block. Multiple positioning step holes are distributed on the processing platform, and multiple workpieces can be clamped and processed at one time through the clamping plate and clamping bolts. The device realizes the processing of three processing planes for multiple workpieces through one clamping, which improves the processing accuracy and production efficiency of the processed workpieces, reduces the tool changing time, reduces labor intensity, and reduces the tool changing loss of the machine tool. .

Description

Special three-position multi-position positioning and clamping device for processing pump covers

technical field

The utility model relates to a positioning and clamping device for processing pump covers, in particular to a special three-return multi-station positioning and clamping device for processing pump covers, which is used for processing parts on numerically controlled machining centers and numerically controlled milling machines to realize Multi-angle positioning, one-time clamping and processing of multiple workpieces.

Background technique

In the traditional pump cover processing, three independent molds are used to process the three processing planes of the positive, negative and 40° angles of the part. It needs to be clamped three times, and each processing must frequently use the tool magazine of the machining center or Manually change various tools. Repeated clamping of the workpiece causes a large positioning error, and it is difficult to guarantee the machining accuracy of the workpiece and the shape and position tolerances of each dimension among the three machining planes, resulting in a high scrap rate. And can only process one workpiece at a time, work efficiency is very low, and work labor intensity is big.

Contents of the invention

In order to overcome the problems of repeated clamping of workpieces and large processing errors, high reject rate and low production efficiency in the existing pump cover processing, the utility model provides a special three-turn machine for processing pump covers on a numerically controlled machining center or a numerically controlled milling machine. Multi-station positioning and clamping device. A maximum of 12 workpieces can be processed in one clamping and positioning, and the dimensions of the three processing planes of the pump cover can be processed in one clamping and positioning.

The technical solution adopted by the utility model to solve its technical problems is: by base plate, left support block, front bearing block, rotating shaft, fixed nut, rotation positioning block, positioning pin, compression nut, pin, screw rod seat, screw rod, The right support block, the processing platform, the compression bolt, the pressure plate, the connecting block, and the rear bearing seat are composed; the left support block and the right support block are respectively fixed at the left and right ends of the bottom plate, and the middle positions of the front and rear ends of the bottom plate are respectively fixed by bolts. Bearing seat and rear bearing seat; one end of the rotating shaft is a stepped shaft, inserted into the bearing hole of the rear bearing seat, and the other end is threaded, passing through the bearing hole of the front bearing seat; two connecting blocks are sleeved on the rotating shaft, and the processing platform It is fixed together with 2 connection blocks by bolt connection;

The rotary positioning block is bent and placed on the front end of the front bearing seat. The upper section is a horizontal block with a through hole matching the large end of the positioning pin; the bottom through hole of the lower section of the rotary positioning block is sleeved on the rotating shaft. , and fixed by the fixing nut;

The lower end of the screw seat is fixed on the lower right corner of the base plate through threaded connection, and the upper end of the screw seat is provided with a groove with a transverse hole; one end of the screw has a flat head with a hole inserted in the groove of the screw seat, and the pin penetrates into the concentric circle of the screw seat and the screw In the hole, the screw seat is connected with the screw, and the other end of the screw is provided with threads;

The processing platform is rectangular, and there are multiple step positioning holes evenly distributed on it. Every two step positioning holes form a group. There are threaded holes between the two step positioning holes in a group. The pressing plate is fixed on the In the threaded hole between the two step positioning holes; a drilling positioning hole is arranged next to each step positioning hole; a groove cooperating with the screw rod (11) is provided at the lower right corner of the processing platform.

Further, the horizontal distance L from the through hole matched with the large end of the positioning pin provided on the upper section of the rotating positioning block to the center of the through hole where the bottom end of the lower section is sleeved on the rotating shaft is 170 mm, and the vertical distance H is 110 mm; The diameter of the small end of the positioning pin is Φ30mm.

The beneficial effect of the utility model is that the processing of three processing planes can be completed by clamping 12 workpieces once. Improve the machining accuracy and production efficiency of the workpiece, effectively reduce the machining center tool magazine or a lot of time for manual conversion of various tools, and shorten the auxiliary production time. It reduces the labor intensity of the workers and the loss of the machining center tool magazine due to the long-term frequent automatic tool change to the mechanical part, and prolongs the service life of the machining center tool magazine.

Description of drawings

Figure 1: It is the front view of the special three-position multi-position positioning and clamping device for processing the pump cover proposed by the utility model when the inclined plane is processed at 40°;

Figure 2: is a top view of Figure 1;

Fig. 3: is the A-A sectional enlarged view of Fig. 2;

Figure 4: It is a schematic diagram of the structure of the front cavity of the pump cover processed by the three-position multi-position positioning and clamping device for processing the pump cover proposed by the utility model;

Figure 5: It is a schematic diagram of the structure of the cavity on the reverse side of the pump cover processed by the special three-position multi-station positioning and clamping device for processing the pump cover proposed by the utility model.

Detailed ways

In the figure: 1. Bottom plate, 2. Left support block, 3. Front bearing seat, 4. Rotary shaft, 5. Fixed nut, 6. Rotary positioning block, 7. Positioning pin, 8. Compression nut, 9. Pin , 10. Screw seat, 11. Screw rod, 12. Right support block, 13. Processing platform, 14. Compression bolt, 15. Press plate, 16. Connecting block, 17. Rear bearing seat, 18. Drilling positioning hole, 19 .Pump cover 40° inclined hole, 20.Pump cover.

As shown in Figures 1 to 5, the special three-position multi-station clamping device for processing pump covers consists of a bottom plate 1, a left support block 2, a front bearing seat 3, a rotating shaft 4, a fixed nut 5, a rotating positioning block 6, and a positioning column. Pin 7, compression nut 8, pin 9, screw seat 10, screw rod 11, right support block 12, processing platform 13, compression bolt 14, pressure plate 15, connection block 16, rear bearing seat 17; The two ends are respectively fixed with a left support block 2 and a right support block 12, and the middle positions of the front and rear ends of the bottom plate 1 are respectively fixed with a front bearing seat 3 and a rear bearing seat 17 by bolts; one end of the rotating shaft 4 is a stepped shaft, which is inserted into the rear bearing seat 17 In the bearing hole, the other end is threaded and passes through the bearing hole of the front bearing seat 3; 2 connecting blocks 16 are sleeved on the rotating shaft 4, and the processing platform 13 and the 2 connecting blocks 16 are fixed together by bolts;

The rotary positioning block 6 is bent and placed on the front end of the front bearing seat 3. The upper section is a horizontal block on which is provided with a through hole cooperating with the large end of the positioning pin 7; On the rotating shaft 4, and fixed by the fixing nut 5;

In order to make the processing platform 13 and the bottom plate 1 form an included angle of 40°, the horizontal distance from the through hole on the upper section of the rotating positioning block that matches the large end of the positioning pin to the center of the through hole on the rotating shaft at the bottom of the lower section L is 170mm, and the vertical distance H is 110mm; the diameter of the small end of the positioning pin is Φ30mm.

The lower end of the screw seat 10 is fixed on the lower right corner of the base plate 1 through threaded connection, and the upper end of the screw seat 10 is provided with a groove with a transverse hole; one end of the screw 11 has a flat head with a hole inserted in the groove of the screw seat 10, and the pin 9 penetrates into the screw In the concentric circular holes of seat 10 and screw rod 11, screw rod seat 10 is connected with screw rod 11, and the other end of screw rod 11 is provided with screw thread;

The processing platform (13) is rectangular, and is provided with 12 step positioning holes, evenly distributed, every two step positioning holes are a group, and threaded holes are provided between the two step positioning holes in one group. Tight bolt 14 is fixed in the threaded hole between two step locating holes; Be provided with drilling locating hole 18 beside each step locating hole; Processing platform 13 lower right corners are provided with the groove that cooperates with screw rod (11).

The specific processing process is as follows:

Place the special three-position multi-station positioning and clamping device for processing the pump cover on the workbench of the CNC machining center or CNC milling machine, put the 12 pump covers into the 12 stepped positioning holes from the rear of the processing platform 13, and use The pressing bolt 14 compresses the pressing plate 15 in the threaded hole on the processing platform 13 .

Process the front cavity of the pump cover: as shown in Figure 4, first turn the rotary positioning block 6 to the left bottom plate 1, then turn the processing platform 13 to the right support block 12 on the right, and press the processing platform 13 with bolts. Tightly place it on the machine tool workbench. At this time, the angle between the processing platform 13 and the bottom plate 1 is positioned at 0°. (At this time, the positioning pin 7 is not assembled). The front cavity of the pump cover is upward, and the internal cavity of each pump cover is started to be processed one by one. . After the processing is completed, loosen the bolts pressed against the workbench.

Process the 40° inclined hole of the pump cover: as shown in Figure 1, turn the rotating positioning block 6 to the right, and place the horizontal block of the rotating positioning block 6 on the trapezoidal platform at the right end of the front bearing seat 3; lift the processing platform 13, and place the positioning The large end of the pin 7 is inserted into the through hole of the upper part of the rotating positioning block, and then the processing platform 13 is pressed on the small end of the positioning pin 7; the screw 11 is rotated around the screw seat 10 to a position perpendicular to the bottom plate 1, and inserted into the processing platform 13 In the groove in the lower right corner, the nut 8 is screwed into the screw rod 11, so that the processing platform 13 is pressed on the small end of the positioning pin 7. At this time, the processing platform 13 and the base plate 1 form an angle of 40°, and the drill on the processing platform 13 Hole positioning hole 18 processes pump cover 40 ° oblique hole 19 one by one.

Process the counterbore of the screw on the back of the pump cover: as shown in Figure 5, loosen the nut 8, lower the screw rod 11 to the right end of the bottom plate 1, turn the processing platform 13 to the left support block 2, and press the processing platform 13 on the machine tool with bolts On the platform, at this moment, the processing platform 13 is 180° with the base plate 1, and the cavity on the reverse side of the pump cover is upward, (locating pin 7 is not assembled at this time), and the screw counterbore holes on the reverse side of each pump cover are started to be processed one by one. In this way, through the three rotation positionings of the processing platform 13, the processing of three different positions in one clamping positioning of the 12 pump covers has been completed.

Apparently, the above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, rather than limiting the implementation manner of the present utility model. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. All the implementation manners cannot be exhaustively listed here. All obvious changes or variations derived from the technical solutions of the utility model are still within the scope of protection of the utility model.

Claims (2)

1. A special three-position multi-station positioning and clamping device for processing pump covers, which is characterized in that it consists of a base plate (1), a left support block (2), a front bearing seat (3), a rotating shaft (4), and a fixed Nut (5), rotary positioning block (6), positioning pin (7), compression nut (8), pin (9), screw seat (10), screw rod (11), right support block (12), processing platform (13), hold-down bolts (14), pressure plate (15), connection block (16), rear bearing seat (17); left support block (2) and left support block (2) and The right support block (12), the middle positions of the front and rear ends of the base plate (1) are respectively fixed with a front bearing seat (3) and a rear bearing seat (17) by bolts; one end of the rotating shaft (4) is a stepped shaft, which is inserted into the rear bearing seat ( 17) in the bearing hole, the other end is threaded and passes through the bearing hole of the front bearing seat (3); 2 connecting blocks (16) are sleeved on the rotating shaft (4), and the processing platform (13) is connected with the 2 Blocks (16) are fixed together by bolting; The rotary positioning block (6) is bent and placed on the front end of the front bearing seat (3). ) The through hole at the bottom of the lower section is sleeved on the rotating shaft (4) and fixed by the fixing nut (5); The lower end of the screw seat (10) is fixed on the lower right corner of the base plate (1) through threaded connection, and the upper end of the screw seat (10) is provided with a groove with a transverse hole; ), the pin (9) penetrates the concentric circular holes of the screw seat (10) and the screw (11), and the screw seat (10) is connected with the screw (11), and the other end of the screw (11) is provided with threads; Processing platform (13) is rectangle, is provided with a plurality of step locating holes above, evenly distributed, every two step locating holes is a group, is provided with threaded hole between two step locating holes in a group, and pressing plate (15) Be fixed in the threaded hole between two step locating holes by compression bolt (14); Be provided with drilling locating hole (18) next to each step locating hole; Processing platform (13) lower right corner is provided with screw rod (11) ) matching groove. 2. A special three-return multi-station positioning and clamping device for processing pump covers according to claim 1, characterized in that: the upper section of the rotary positioning block (6) is provided with the positioning pin (7 ) The horizontal distance L from the through hole that the big end fits to the center of the through hole that the bottom end of the lower section is sleeved on the rotating shaft (4) is 170mm, and the vertical distance H is 110mm; the diameter of the small end of the positioning pin (7) is Φ30mm.

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