Bending clamp for mechanical part machining

Abstract

The utility model discloses a bending fixture for machining mechanical parts, which comprises a fixing plate, a heating device, a mounting device and a clamping device are arranged on the fixing plate, the mounting device comprises a fixed sleeve and a variable sleeve, the fixed sleeve is fixedly arranged on the upper surface of the fixing plate, the variable sleeve is sleeved outside the fixed sleeve in a sliding manner, and the clamping device is arranged on the variable sleeve. Due to the fact that the variable sleeves are arranged, adjustment can be carried out according to different bending radiuses of parts, the corresponding variable sleeves are directly arranged outside the fixed sleeve in a sleeved mode during adjustment, the limiting strips correspond to the limiting grooves, and the adjustable bending device is simple, convenient and fast to use. And a handle is arranged at the top of the variable sleeve, so that the variable sleeve can be conveniently taken out from the fixed sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of bending fixtures, and more specifically, to a bending fixture for machining mechanical parts. Background Art

[0002] When mechanical parts are being processed, bending fixtures are often used to assist in the bending of the parts. Existing bending fixtures generally include a fixed roller and a fixing mechanism. The radius of the fixed roller is the same as the bending radius, and the position of the fixing mechanism is set corresponding to the fixed roller to position and fix the parts. The fixed roller in the existing bending fixture is not easy to adjust according to the bending radius of different parts, and even if the radius of the fixed roller is adjusted accordingly, the position of the fixing mechanism is not easy to adjust according to the change of the fixed roller, resulting in difficulty in clamping and fixing the parts; in addition, when the degree of bending at the bend is large, the bending stress on the part is large, which can easily cause the outer side of the bend of the part to break. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the problems existing in the prior art, the utility model provides a bending fixture for machining mechanical parts to solve the technical problem mentioned in the background technology that the radius of the fixed roller is not easy to be adjusted along with the adjustment of the bending radius of the parts.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bending fixture for machining mechanical parts, comprising a fixed plate, a heating device, a mounting device and a clamping device are provided on the fixed plate, the mounting device comprises a fixed sleeve and a variable sleeve, the fixed sleeve is fixedly arranged on the upper surface of the fixed plate, the variable sleeve is slidably sleeved outside the fixed sleeve, and a limit strip is provided inside the variable sleeve, and a limit groove cooperating with the limit strip is provided outside the fixed sleeve, the clamping device comprises a clamping mechanism, a first receiving plate and a second receiving plate, the clamping mechanism is provided with a plurality of clamping mechanisms, and are respectively arranged on the first receiving plate and the second receiving plate, the clamping mechanism comprises a base, a connecting plate, a first limit plate, a second limit plate and a third limit plate, the first receiving plate and the second receiving plate are both provided with connecting screws, the external thread sleeve of the connecting screw is provided with a connecting nut, and the connecting plate is provided with a through groove cooperating with the connecting screw.

[0007] The utility model is further configured as follows: the base is arranged on the upper surface of the connecting plate, the first limit plate and the third limit plate are fixedly arranged at two ends of the base, the second limit plate is arranged between the first limit plate and the third limit plate, and the second limit plate and the base are slidably matched, one end of the second limit plate is rotatably provided with an adjusting screw, one end of the adjusting screw passes through the third limit plate and is threadedly connected to the third limit plate, and a knob is provided on the adjusting screw.

[0008] The utility model is further configured that the heating device comprises a heating rod, the heating rod is fixedly arranged in a fixed sleeve, a heat conducting block is arranged in the variable sleeve, and an avoidance groove cooperating with the heat conducting block is arranged on the fixed sleeve.

[0009] The utility model is further configured such that a dovetail block is provided on the lower surface of the second limiting plate, and a dovetail groove cooperating with the dovetail block is provided on the base.

[0010] The utility model is further configured such that a connecting block is provided on the lower surface of the second receiving plate, a rotating plate is provided on the bottom of the connecting block, the rotating plate is rotatably connected to the fixed plate, and a sliding groove cooperating with the connecting block is provided on the fixed plate.

[0011] The utility model is further configured such that both the first limiting plate and the second limiting plate are provided with anti-slip pads.

[0012] The utility model is further configured such that the first receiving plate and the fixing plate are detachably connected via bolts.

[0013] The utility model is further configured that a handle is provided on the top of the variable sleeve.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the utility model provides a bending fixture for machining mechanical parts, which has the following beneficial effects:

[0016] 1. The utility model is provided with a variable sleeve, which can be adjusted according to the different bending radius of the parts. When adjusting, the corresponding variable sleeve is directly sleeved outside the fixed sleeve, and the limit strip and the limit groove correspond to each other. It is simple and convenient, and a handle is provided on the top of the variable sleeve to facilitate taking it out from the fixed sleeve.

[0017] 2. The utility model is provided with a clamping device, which is convenient for clamping and fixing parts, and the position of the clamping device can be changed with the different variable sleeves, so that the clamping device is suitable for bending work with various bending radii.

[0018] 3. The utility model is provided with a heating device, which can be heated by an external power supply through a heating rod, and can transfer heat to the variable sleeve through a heat-conducting block to heat the bending part of the part, thereby preventing the bending stress at the bending part from being excessive and causing cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a bending fixture for machining mechanical parts;

[0020] Figure 2 It is a structural schematic diagram of the variable sleeve and the fixed sleeve in an unconnected state;

[0021] Figure 3 is a structural schematic diagram of the second receiving plate and the clamping mechanism;

[0022] Figure 4 is a structural schematic diagram of the first receiving plate and the clamping mechanism;

[0023] Figure 5 Schematic diagram of the structure of the second limiting plate.

[0024] In the figure: 1. fixed plate; 2. fixed sleeve; 3. variable sleeve; 4. limit strip; 5. limit groove; 6. first receiving plate; 7. second receiving plate; 8. base; 9. connecting plate; 10. first limit plate; 11. second limit plate; 12. third limit plate; 13. connecting screw; 14. connecting nut; 15. through groove; 16. adjusting screw; 17. knob; 18. heating rod; 19. heat conducting block; 20. avoidance groove; 21. dovetail block; 22. dovetail groove; 23. connecting block; 24. rotating plate; 25. slide groove; 26. anti-slip pad; 27. handle. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0027] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0028] See also Figure 1-5 A bending fixture for machining mechanical parts comprises a fixed plate 1, on which a heating device, an installation device and a clamping device are provided, the installation device comprises a fixed sleeve 2 and a variable sleeve 3, the fixed sleeve 2 is fixedly arranged on the upper surface of the fixed plate 1, the variable sleeve 3 is slidably sleeved outside the fixed sleeve 2, and a limit strip 4 is provided inside the variable sleeve 3, and a limit groove 5 cooperating with the limit strip 4 is provided outside the fixed sleeve 2, the clamping device comprises a clamping mechanism, a first receiving plate 6 and a second receiving plate 7, a plurality of clamping mechanisms are provided, and are respectively arranged on the first receiving plate 6 and the second receiving plate 7, the clamping mechanism comprises a base 8, a connecting plate 9, a first limit plate 10, a second limit plate 11 and a third limit plate 12, the first receiving plate 6 and the second receiving plate 7 are both provided with a connecting screw 13, the connecting screw 13 is externally threaded with a connecting nut 14, and the connecting plate 9 is provided with a through groove 15 cooperating with the connecting screw 13. The heating device includes a heating rod 18, which is fixedly arranged in the fixed sleeve 2, a heat conducting block 19 is arranged in the variable sleeve 3, and an avoidance groove 20 is arranged on the fixed sleeve 2 to cooperate with the heat conducting block 19. The first limiting plate 10 and the second limiting plate 11 are both provided with an anti-slip pad 26. The first receiving plate 6 and the fixed plate 1 are detachably connected by bolts. A handle 27 is provided on the top of the variable sleeve 3.

[0029] In this embodiment, according to the different bending radius of the parts, a suitable variable sleeve 3 is selected, and the variable sleeve 3 is sleeved outside the fixed sleeve 2, and the limit strip 4 and the limit groove 5 are cooperated for limiting. At this time, the heat conductive block 19 is inserted into the avoidance groove 20, and the heat conductive block 19 and the heating rod 18 are fitted.

[0030] More specifically, according to the radius of the variable sleeve 3, the clamping mechanism is moved to a suitable position, the connecting nut 14 is loosened, and the position of the clamping mechanism is moved. At this time, the slide groove 25 is sleeved outside the connecting screw 13 and moves. After moving into position, the connecting nut 14 is tightened to complete the fixation of the clamping mechanism.

[0031] See also Figure 1-5 As an implementation of the clamping mechanism: the base 8 is arranged on the upper surface of the connecting plate 9, the first limiting plate 10 and the third limiting plate 12 are fixedly arranged at both ends of the base 8, the second limiting plate 11 is arranged between the first limiting plate 10 and the third limiting plate 12, and the second limiting plate 11 and the base 8 are slidably matched, one end of the second limiting plate 11 is rotatably provided with an adjusting screw 16, one end of the adjusting screw 16 passes through the third limiting plate 12 and is threadedly connected to the third limiting plate 12, and the adjusting screw 16 is provided with a knob 17. A dovetail block 21 is provided on the lower surface of the second limiting plate 11, and a dovetail groove 22 matched with the dovetail block 21 is provided on the base 8.

[0032] Specifically, place the part on the base 8 and between the first limit plate 10 and the second limit plate 11, turn the knob 17 to drive the adjusting screw 16 to rotate, and then drive the second limit block to approach the part along the direction of the dovetail block 21, and clamp and fix the part by the first limit block and the second limit block.

[0033] See also Figure 1-5 As a further implementation of the second receiving plate 7: a connecting block 23 is provided on the lower surface of the second receiving plate 7, a rotating plate 24 is provided at the bottom of the connecting block 23, the rotating plate 24 is rotatably connected to the fixed plate 1, and a sliding groove 25 cooperating with the connecting block 23 is provided on the fixed plate 1.

[0034] Specifically, the rotating plate 24 is connected to an external driving device, and the driving device drives the rotating plate 24 to rotate around the axis of the fixed sleeve 2, thereby driving the second receiving plate 7 and the clamping mechanism to rotate, and driving the parts to bend.

[0035] In summary, when the overall equipment is in use:

[0036] According to the different bending radius of the parts, a suitable variable sleeve 3 is selected, and the variable sleeve 3 is sleeved outside the fixed sleeve 2, and the limit strip 4 and the limit groove 5 are cooperated for limiting. At this time, the heat conductive block 19 is inserted into the avoidance groove 20, and the heat conductive block 19 and the heating rod 18 are fitted.

[0037] According to the radius of the variable sleeve 3, the clamping mechanism is moved to a suitable position, the connecting nut 14 is loosened, and the position of the clamping mechanism is moved. At this time, the slide groove 25 is sleeved outside the connecting screw 13 and moves. After moving into place, the connecting nut 14 is tightened to complete the fixation of the clamping mechanism.

[0038] Place the part on the base 8 and locate it between the first limit plate 10 and the second limit plate 11, turn the knob 17 to drive the adjusting screw 16 to rotate, and then drive the second limit block to approach the part along the direction of the dovetail block 21, and clamp and fix the part through the first limit block and the second limit block.

[0039] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A bending fixture for machining mechanical parts, comprising a fixing plate (1), characterized in that: The fixed plate (1) is provided with a heating device, a mounting device and a clamping device, the mounting device comprising a fixed sleeve (2) and a variable sleeve (3), the fixed sleeve (2) being fixedly arranged on the upper surface of the fixed plate (1), the variable sleeve (3) being slidably sleeved outside the fixed sleeve (2), and a limit strip (4) being arranged inside the variable sleeve (3), and a limit groove (5) cooperating with the limit strip (4) being arranged outside the fixed sleeve (2), the clamping device comprising a clamping mechanism, a first receiving plate (6) and a second receiving plate (7), The clamping mechanisms are provided in plurality and are respectively provided on the first receiving plate (6) and the second receiving plate (7). The clamping mechanisms comprise a base (8), a connecting plate (9), a first limiting plate (10), a second limiting plate (11) and a third limiting plate (12). The first receiving plate (6) and the second receiving plate (7) are both provided with connecting screws (13), the connecting screws (13) are externally threadedly sleeved with connecting nuts (14), and the connecting plate (9) is provided with through grooves (15) cooperating with the connecting screws (13).

2. A bending fixture for machining mechanical parts according to claim 1, characterized in that: The base (8) is arranged on the upper surface of the connecting plate (9), the first limiting plate (10) and the third limiting plate (12) are fixedly arranged at two ends of the base (8), the second limiting plate (11) is arranged between the first limiting plate (10) and the third limiting plate (12), and the second limiting plate (11) and the base (8) are slidably matched, one end of the second limiting plate (11) is rotatably provided with an adjusting screw (16), one end of the adjusting screw (16) passes through the third limiting plate (12) and is threadedly connected to the third limiting plate (12), and a knob (17) is provided on the adjusting screw (16).

3. The bending fixture for machining mechanical parts according to claim 1 is characterized in that: The heating device comprises a heating rod (18), wherein the heating rod (18) is fixedly arranged in a fixed sleeve (2), a heat conducting block (19) is arranged in the variable sleeve (3), and an avoidance groove (20) cooperating with the heat conducting block (19) is arranged on the fixed sleeve (2).

4. The bending fixture for machining mechanical parts according to claim 2 is characterized in that: A dovetail block (21) is provided on the lower surface of the second limiting plate (11), and a dovetail groove (22) cooperating with the dovetail block (21) is provided on the base (8).

5. The bending fixture for machining mechanical parts according to claim 1 is characterized in that: A connecting block (23) is provided on the lower surface of the second receiving plate (7), a rotating plate (24) is provided at the bottom of the connecting block (23), the rotating plate (24) is rotatably connected to the fixed plate (1), and a sliding groove (25) cooperating with the connecting block (23) is provided on the fixed plate (1).

6. A bending fixture for machining mechanical parts according to any one of claims 1 to 5, characterized in that: Anti-slip pads (26) are provided on both the first limiting plate (10) and the second limiting plate (11).

7. A bending fixture for machining mechanical parts according to any one of claims 2 or 4, characterized in that: The first receiving plate (6) and the fixing plate (1) are detachably connected via bolts.

8. The bending fixture for machining mechanical parts according to claim 1 is characterized in that: A handle (27) is provided on the top of the variable sleeve (3).

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