Positioning clamp for flange hole machining

Abstract

The utility model discloses a positioning fixture for flange hole processing, which comprises a base, a carrying seat and pressing mechanisms which are respectively positioned on two sides of the carrying seat and are used for pressing flanges, at least two flanges are stacked above the carrying seat, the carrying seat is provided with a positioning column, each flange is provided with a through hole, the through hole is sleeved on the positioning column, and the pressing mechanisms are used for pressing the flanges. The carrying seat is fixed on the base; the pressing mechanism comprises a pressing block and a rotary pressing air cylinder for driving the pressing block to press the flange, the pressing block is fixed to a pressing plate, and the pressing plate is connected with the rotary pressing air cylinder; the bearing seat is provided with a limiting mechanism, the flange is provided with a plurality of connecting holes, the connecting holes are evenly distributed in the circumferential direction of the flange, and positioning rods of the limiting mechanism are inserted into the connecting holes of the flange. The pressing block is driven by the rotary pressing cylinder to press the flange, so that the flange is positioned.

Description

Technical Field

[0001] This utility model belongs to the field of fixture technology, and in particular relates to a positioning fixture for flange hole machining. Background Technology

[0002] A flange, also called a flange plate or flange, is a component used to connect pipes together, for connecting the pipe ends. Flanges are also used on equipment inlets and outlets to connect two pieces of equipment, such as speed reducer flanges.

[0003] During flange casting, holes are usually pre-reserved. However, due to various factors during casting, the inner wall of the reserved hole is relatively rough and needs to be processed again. When the flange is processed by the processing equipment, it needs to be fixed first to prevent the flange from sliding during processing. Usually, the flange is clamped by manually tightening the screws. Manually tightening and loosening the screws takes a long time, and the screws are prone to stripping after long-term use. Utility Model Content

[0004] The main technical problem solved by this utility model is to provide a positioning fixture for flange hole machining, wherein the pressure block presses the flange under the drive of a rotating pressing cylinder, thereby realizing the positioning of the flange.

[0005] To solve the above-mentioned technical problems, the present invention adopts a technical solution as follows: a positioning fixture for flange hole machining, comprising a base, a carrier, and clamping mechanisms for clamping flanges located on both sides of the carrier. At least two flanges are stacked on top of the carrier. The carrier is provided with a positioning post. The flange has a through hole, the through hole is fitted with the positioning post, and the carrier is fixed to the base.

[0006] The clamping mechanism includes a clamping block and a rotary pressing cylinder that drives the clamping block to clamp the flange. The clamping block is fixed to a pressure plate, and the pressure plate is connected to the rotary pressing cylinder. The clamping block clamps the flange under the drive of the rotary pressing cylinder, thereby achieving the positioning of the flange.

[0007] The carrier is equipped with a limiting mechanism, and the flange has a number of connection holes, which are evenly distributed along the circumference of the flange. The positioning rod of the limiting mechanism is inserted into the connection hole of the flange.

[0008] Furthermore, the limiting mechanism includes the positioning rod, the positioning plate, and the bolt. The positioning rod is fixed to the positioning plate, the positioning plate has a waist-shaped hole, the upper end of the bolt has a protruding head, and the lower end of the bolt passes through the waist-shaped hole and connects to the carrier.

[0009] Furthermore, a spring is provided between the positioning plate and the protrusion, and the spring is sleeved on the bolt. A washer is provided between the spring and the positioning plate. A limiting nut is sleeved under the positioning plate, and the limiting nut is threadedly connected to the bolt.

[0010] Furthermore, the lower end of the positioning rod is provided with a guide slope, and the inclination direction of the guide slope gradually slopes towards the center of the positioning rod along the direction in which the positioning rod is inserted into the connecting hole.

[0011] Furthermore, the pressure block is a plastic pressure block to prevent damage to the product.

[0012] Furthermore, a guide block is provided between the carrier and the base. The carrier has several first waste discharge channels, the guide block has a second waste discharge channel, and the base has a third waste discharge channel. The flange connection hole communicates with the first waste discharge channel, the first waste discharge channel communicates with the second waste discharge channel, and the second waste discharge channel communicates with the third waste discharge channel. A waste collection frame is provided below the third waste discharge channel, so that some of the waste in the connection hole is collected through the waste collection frame.

[0013] Furthermore, the second waste discharge channel is inclined.

[0014] Furthermore, the rotary pressing cylinder is fixed to the mounting base, and both the mounting base and the base are fixed to the bottom plate.

[0015] The beneficial effects of this utility model are at least as follows:

[0016] This utility model includes a base, a carrier, and clamping mechanisms for clamping flanges located on both sides of the carrier. At least two flanges are stacked on top of the carrier. The carrier is provided with a positioning post, and the flange has a through hole. The through hole is fitted with the positioning post. The carrier is fixed to the base. The pressure block clamps the flange under the drive of a rotating pressing cylinder, thereby achieving flange positioning. It is worth mentioning that the positioning rod of the limiting mechanism is inserted into the connection hole of the flange, further improving the stability of flange positioning. More preferably, the flanges can be stacked on the carrier, and multiple flanges can be processed at the same time, thereby improving subsequent processing efficiency.

[0017] The present invention has a guide block between the carrier and the base. The carrier has several first waste discharge channels, the guide block has a second waste discharge channel, and the base has a third waste discharge channel. The flange connection hole is connected to the first waste discharge channel, the first waste discharge channel is connected to the second waste discharge channel, the second waste discharge channel is connected to the third waste discharge channel, and a waste collection frame is provided below the third waste discharge channel, so that some of the waste in the connection hole is collected through the waste collection frame. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is the utility model Figure 1 A magnified view of point A;

[0020] Figure 3 This is a structural schematic diagram of the flange of this utility model;

[0021] Figure 4 This is a cross-sectional view of the present invention;

[0022] Figure 5 This is the utility model Figure 4 A magnified view of point B;

[0023] Figure 6 This is a structural schematic diagram of the positioning rod and positioning plate of this utility model;

[0024] The parts in the attached diagram are labeled as follows:

[0025] 1. Base; 11. Third waste channel; 2. Carrier; 21. Positioning post; 22. First waste channel; 3. Flange; 31. Through hole; 32. Connecting hole; 41. Pressure block; 42. Rotary pressing cylinder; 43. Pressure plate; 44. Mounting seat; 51. Positioning rod; 511. Guide slope; 52. Positioning plate; 521. Waist-shaped hole; 53. Bolt; 531. Protruding head; 54. Spring; 55. Washer; 56. Limit nut; 6. Guide block; 61. Second waste channel; 7. Waste collection frame; 8. Base plate. Detailed Implementation

[0026] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more definite definition of the scope of protection of the present invention.

[0027] Example: A positioning fixture for machining flange holes, such as Figure 1 As shown, the device includes a base 1, a carrier 2, and clamping mechanisms located on both sides of the carrier 2 for clamping flanges 3. At least two flanges 3 are stacked on top of the carrier 2. The carrier 2 is provided with positioning posts 21, as shown. Figure 3 As shown, the flange 3 has a through hole 31, the through hole 31 is fitted onto the positioning post 21, and the carrier 2 is fixed to the base 1;

[0028] The pressing mechanism includes a pressing block 41 and a rotary pressing cylinder 42 that drives the pressing block 41 to press the flange 3. The pressing block 41 is fixed to the pressing plate 43, and the pressing plate 43 is connected to the rotary pressing cylinder 42.

[0029] The carrier 2 is equipped with a limiting mechanism, and the flange 3 is provided with a plurality of connection holes 32, which are evenly distributed along the circumference of the flange 3. The positioning rod 51 of the limiting mechanism is inserted into the connection hole 32 of the flange 3.

[0030] like Figure 2 As shown, the limiting mechanism includes the positioning rod 51, the positioning plate 52 and the bolt 53. The positioning rod 51 is fixed to the positioning plate 52. The positioning plate 52 is provided with a waist-shaped hole 521. The upper end of the bolt 53 has a protrusion 531. The lower end of the bolt 53 passes through the waist-shaped hole 521 and is connected to the carrier 2.

[0031] A spring 54 is provided between the positioning plate 52 and the protrusion 531, and the spring 54 is sleeved on the bolt 53. A washer 55 is provided between the spring 54 and the positioning plate 52. A limiting nut 56 is sleeved under the positioning plate 52, and the limiting nut 56 is threaded to the bolt 53.

[0032] like Figure 6 As shown, the lower end of the positioning rod 51 is provided with a guide slope 511, and the inclination direction of the guide slope 511 gradually inclines towards the center of the positioning rod 51 along the direction in which the positioning rod 51 is inserted into the connecting hole 32.

[0033] The pressure block 41 is a plastic pressure block 41 to prevent damage to the product.

[0034] like Figure 4 He Ru Figure 5 As shown, a guide block 6 is provided between the carrier 2 and the base 1. The carrier 2 is provided with a plurality of first waste discharge channels 22. The guide block 6 is provided with a second waste discharge channel 61. The base 1 is provided with a third waste discharge channel 11. The connecting hole 32 of the flange 3 is connected to the first waste discharge channel 22. The first waste discharge channel 22 is connected to the second waste discharge channel 61. The second waste discharge channel 61 is connected to the third waste discharge channel 11. A waste collection frame 7 is provided below the third waste discharge channel 11.

[0035] The second waste discharge channel 61 is inclined.

[0036] The rotary pressing cylinder 42 is fixed to the mounting base 44, and both the mounting base 44 and the base 1 are fixed to the base plate 8.

[0037] The working principle of this utility model is as follows: Place the flange on the carrier and insert the positioning pin into the through hole of the flange. Rotate the positioning plate so that the positioning rod is inserted into the connection hole of the flange and the first waste channel. The pressure block presses the flange under the drive of the rotating pressing cylinder. The processing equipment grinds some of the connection holes of the flange. Then, the positioning rod is inserted into another connection hole on the flange, and the remaining connection holes are ground.

[0038] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A positioning fixture for flange hole machining, characterized by: The base (1), the carrier (2) and the pressing mechanism for pressing the flange (3) are included, at least two flanges are stacked above the carrier, the carrier is provided with a positioning column (21), the flange has a through hole (31), the through hole is sleeved on the positioning column, and the carrier is fixed on the base; The pressing mechanism includes a pressing block (41) and a rotary pressing cylinder (42) for driving the pressing block to press the flange, the pressing block is fixed on a pressing plate (43), and the pressing plate is connected with the rotary pressing cylinder; The carrier is provided with a limiting mechanism, the flange is provided with a plurality of connecting holes (32), and the connecting holes are uniformly distributed along the circumference of the flange, and the positioning rod (51) of the limiting mechanism is inserted into the connecting hole of the flange.

2. The positioning fixture for machining of flange holes according to claim 1, characterized in that: The limiting mechanism includes the positioning rod, a positioning plate (52) and a bolt (53), the positioning rod is fixed on the positioning plate, the positioning plate is provided with a waist-shaped hole (521), the upper end of the bolt is provided with a convex head (531), the lower end of the bolt passes through the waist-shaped hole and is connected with the carrier.

3. The positioning fixture for machining of flange holes according to claim 2, characterized in that: A spring (54) is arranged between the positioning plate and the convex head, the spring is sleeved on the bolt, a gasket (55) is arranged between the spring and the positioning plate, a limiting nut (56) is sleeved below the positioning plate, and the limiting nut is threadedly connected with the bolt.

4. The positioning fixture for machining of flange holes according to claim 3, characterized in that: The lower end of the positioning rod is provided with a guide inclined surface (511), and the inclined direction of the guide inclined surface gradually inclines to the center of the positioning rod along the direction in which the positioning rod is inserted into the connecting hole.

5. The positioning fixture for machining of flange holes according to claim 1, characterized in that: The pressing block is a plastic pressing block to prevent the product from being pressed.

6. The positioning fixture for machining of flange holes according to claim 1, characterized in that: A material guide block (6) is arranged between the carrier and the base, the carrier is provided with a plurality of first waste discharge channels (22), the material guide block is provided with a second waste discharge channel (61), the base is provided with a third waste discharge channel (11), the connecting hole of the flange is communicated with the first waste discharge channel, the first waste discharge channel is communicated with the second waste discharge channel, the second waste discharge channel is communicated with the third waste discharge channel, and the lower end of the third waste discharge channel is provided with a waste collecting frame (7).

7. The positioning fixture for machining of flange holes according to claim 6, characterized in that: The second waste discharge channel is arranged in an inclined manner.

8. The positioning fixture for machining of flange holes according to claim 1, characterized in that: The rotary pressing cylinder is fixed on a mounting seat (44), and the mounting seat and the base are both fixed on a base plate (8).

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