Fixture and machine tool for front axle welding frame

Abstract

The utility model discloses a clamp for a front axle welding frame and a machine tool. Comprising a base, a first clamping assembly used for positioning the transverse position of the front axle welding frame and a second clamping assembly used for positioning the longitudinal position of the front axle welding frame. The height adjusting assembly is used for adjusting the position of the front axle welding frame in the vertical direction, and the centering auxiliary mechanism is used for adjusting the center position of the front axle welding frame. The centering auxiliary mechanism comprises a sleeve arranged on the second clamping assembly, ejector rods arranged at the two ends of the sleeve in a sliding and embedded mode and used for abutting against the front axle welding frame, and a center line arranged on the sleeve and used for being aligned with the reference block. The fixture is suitable for front axle welding frame workpieces of multiple models, clamping, alignment and debugging are simple, positioning is accurate, the machining quality can be guaranteed, the machining efficiency is improved, and the machining cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a clamp for a front axle welding frame. In addition, the utility model also relates to a machine tool comprising the clamp for a front axle welding frame. Background Art

[0002] The cotton picker is a large agricultural machine, and the front axle welded frame is its core component, providing an installation location for systems such as the cotton picking head suspension, gearbox and travel assembly. It has the characteristics of high installation precision requirements, great processing difficulty and long processing cycle.

[0003] At present, there are generally two processing schemes in the processing of the front axle welding frame in the industry. One is to use special tooling equipment on the marking platform to complete the marking of the front axle workpiece first, and then place the workpiece on a large floor-standing boring and rotating workbench to align the marking reference line; during the processing, the workpiece needs to be re-clamped and aligned, and the marking reference needs to be verified before the processing can be completed. The second processing method is to place the workpiece directly on the rotating workbench of the machine tool. After clamping and alignment, the machine tool completes the correction of the workpiece, milling the reference, and checking whether the margin of each processing part is sufficient. Both of these processing methods have the disadvantages of long clamping and alignment time, low efficiency, high cost, and are not conducive to batch processing. Utility Model Content

[0004] The utility model provides a clamp and a machine tool for a front axle welding frame, so as to solve the technical problems that the existing front axle welding frame tooling has long clamping and alignment time, low efficiency, high cost and is not conducive to batch processing.

[0005] According to one aspect of the utility model, a clamp for a front axle welding frame is provided, comprising a base, a first clamping assembly for positioning the lateral position of the front axle welding frame, a second clamping assembly for positioning the longitudinal position of the front axle welding frame, a height adjustment assembly for adjusting the vertical position of the front axle welding frame, and a centering auxiliary mechanism for adjusting the center position of the front axle welding frame, wherein a reference block is arranged on the base, and the centering auxiliary mechanism comprises a sleeve arranged on the second clamping assembly, a push rod slidably embedded at both ends of the sleeve for abutting the front axle welding frame, and a center line arranged on the sleeve for aligning the reference block.

[0006] Furthermore, the first clamping assembly includes a first support seat symmetrically arranged on both sides of the reference block and a first transverse positioning rod arranged on the first support seat, and the first transverse positioning rod can move in a transverse direction and be positioned after moving.

[0007] Furthermore, the first clamping assembly also includes a second support seat symmetrically arranged on both sides of the reference block and a second transverse positioning rod arranged on the second support seat, and the second transverse positioning rod can move in the transverse direction and position after moving.

[0008] Furthermore, a pressure plate for limiting the clamping height of the front axle welding frame is arranged on the first support seat and / or the second support seat.

[0009] Furthermore, the second clamping assembly includes a third support seat symmetrically arranged on both sides of the reference block, a first longitudinal positioning rod arranged on the third support seat, a fourth support seat symmetrically arranged on both sides of the reference block and a second longitudinal positioning rod arranged on the fourth support seat, the third support seat and the fourth support seat are arranged at intervals, the first longitudinal positioning rod and the second longitudinal positioning rod can both move in the longitudinal direction and be positioned after moving, and the sleeve is arranged on the third support seat in the transverse direction.

[0010] Furthermore, the fourth support seat is provided with a third transverse positioning rod, and the third transverse positioning rod moves along the transverse direction and is positioned after the movement.

[0011] Furthermore, the height adjustment assembly includes a fifth support seat symmetrically arranged on both sides of the reference block and a sixth support seat symmetrically arranged on both sides of the reference block, the fifth support seat and the sixth support seat are arranged at intervals, and a lifting mechanism is arranged on the fifth support seat and / or the sixth support seat.

[0012] Furthermore, the fixture for the front axle welding frame also includes a marking ruler, and a positioning piece for abutting against the marking ruler is arranged on the base, and the positioning piece is symmetrically arranged on both sides of the reference block.

[0013] Furthermore, the marking ruler comprises a bottom plate and a backing plate which are arranged perpendicular to each other, and the backing plate is provided with gaps for marking at intervals.

[0014] According to another aspect of the utility model, a machine tool is also provided, which includes the above-mentioned clamp for welding the front axle frame.

[0015] The utility model has the following beneficial effects:

[0016] When the utility model is used, the front axle welding frame is hoisted into the clamp as a whole, and the bottom of the beam of the front axle welding frame is supported by the height adjustment component, which can adjust the height and inclination angle of the front axle welding frame, and then the top rods at both ends of the sleeve are extended to the same length until the two top rods are in contact with the front axle welding frame, and then the position of the sleeve on the second clamping component is adjusted so that the center line is aligned with the reference block, and the lateral position of the front axle welding frame is positioned by the first clamping component, and the longitudinal position of the front axle welding frame is positioned by the second clamping component, so that the center position of the front axle welding frame can be guaranteed to coincide with the center of the clamp. The utility model is suitable for front axle welding frame workpieces of multiple models, and its clamping, alignment and debugging are simple, and the positioning is accurate, which can ensure the processing quality, improve the processing efficiency, and reduce the processing cost.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 It is a structural schematic diagram of a clamp for clamping a front axle welding frame in a preferred embodiment of the utility model;

[0020] Figure 2 It is a structural schematic diagram of a clamp for welding a front axle frame according to a preferred embodiment of the utility model;

[0021] Figure 3 It is a structural schematic diagram of the first clamping assembly of the preferred embodiment of the utility model;

[0022] Figure 4 It is a top view of a clamp for welding a front axle frame according to a preferred embodiment of the utility model;

[0023] Figure 5 It is a structural schematic diagram of a base of a preferred embodiment of the utility model;

[0024] FIG6 is a schematic structural diagram of a first support seat in a preferred embodiment of the utility model;

[0025] 7 is a schematic structural diagram of a third support base in a preferred embodiment of the utility model;

[0026] Figure 8 It is a structural schematic diagram of a centering auxiliary mechanism of a preferred embodiment of the utility model;

[0027] Fig. 9 It is a structural schematic diagram of a marking ruler according to a preferred embodiment of the utility model.

[0028] Legend:

[0029] 100, front axle welding frame; 1, base; 11, reference block; 12, positioning piece; 13, lifting ear; 14, frame; 15, first support plate; 16, second support plate; 17, third support plate; 18, thread fast; 2, first clamping assembly; 21, first support seat; 211, first bottom plate; 212, first column; 213, first top plate; 214, first threaded sleeve; 215, first reinforcing rib; 216, pressure plate connecting seat; 22, first transverse positioning rod; 23, second support seat; 24, second transverse positioning rod; 25, pressure plate; 3, second clamping assembly; 31, third support seat; 311, second bottom Plate; 312, second column; 313, second top plate; 314, second threaded sleeve; 315, third threaded sleeve; 316, second reinforcing rib; 32, first longitudinal positioning rod; 33, fourth support seat; 34, second longitudinal positioning rod; 35, third transverse positioning rod; 4, height adjustment assembly; 41, fifth support seat; 42, sixth support seat; 43, lifting mechanism; 5, centering auxiliary mechanism; 51, sleeve; 511, locking pin; 52, top rod; 521, top block; 53, center line; 6, marking ruler; 61, bottom plate; 611, weight reduction hole; 62, support plate; 621, notch; 63, third reinforcing rib. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0031] Please also read Figures 1 to 9 The clamp for welding the front axle frame of this embodiment is Figure 1 The X-axis shown is horizontal, the Y-axis is vertical, and the Z-axis is height direction. It includes a base 1, a first clamping assembly 2 for locating the lateral position of the front axle welding frame 100, a second clamping assembly 3 for locating the longitudinal position of the front axle welding frame, a height adjustment assembly 4 for adjusting the vertical position of the front axle welding frame, and a centering auxiliary mechanism 5 for adjusting the center position of the front axle welding frame 100. A reference block 11 is arranged on the base 1, and the centering auxiliary mechanism 5 includes a sleeve 51 arranged on the second clamping assembly 3, a push rod 52 slidably embedded at both ends of the sleeve 51 for abutting the front axle welding frame 100, and a center line 53 arranged on the sleeve 51 for aligning the reference block 11.

[0032] When the clamp for the front axle welding frame of this embodiment is used, the front axle welding frame 100 is hoisted into the clamp as a whole, and the bottom of the beam of the front axle welding frame 100 is supported by the height adjustment component 4, which can adjust the height and inclination angle of the front axle welding frame 100. Then, the top rods 52 at both ends of the sleeve 51 are extended to the same length until the two top rods 52 are both against the front axle welding frame 100, and then the position of the sleeve 51 on the second clamping component 3 is adjusted so that the center line 53 is aligned with the reference block 11. The lateral position of the front axle welding frame 100 is positioned by the first clamping component 2, and the longitudinal position of the front axle welding frame 100 is positioned by the second clamping component 3, so that the center position of the front axle welding frame 100 can be ensured to coincide with the center of the clamp. The clamp is suitable for multiple models of front axle welding frame 100 workpieces, and its clamping, alignment and debugging are simple, and the positioning is accurate, which can ensure the processing quality, improve the processing efficiency, and reduce the processing cost. Optionally, a locking pin 511 for positioning the telescopic length of the push rod 52 is arranged on the sleeve 51, so that the length of the push rod 52 does not change, thereby ensuring the accuracy of the centering operation. Optionally, a conical push block 521 is arranged on one end of the push rod 52 for abutting the front axle welding frame 100 to reduce friction and facilitate the rotation of the push rod 52. Optionally, the sleeve 51 is a two-way telescopic cylinder that can drive the push rods 52 at both ends to telescope synchronously, which can improve the clamping efficiency. Optionally, a step for aligning with the center line 53 is arranged on the reference block 11.

[0033] In this embodiment, the first clamping assembly 2 includes a first support seat 21 symmetrically arranged on both sides of the reference block 11 and a first transverse positioning rod 22 arranged on the first support seat 21. The first transverse positioning rod 22 can move in the transverse direction and position after moving. The front bridge welding frame 100 can be clamped by moving the two first transverse positioning rods 22 toward each other, and the position of the front bridge welding frame 100 in the X-axis direction can be positioned. The structure is simple and the clamping is firm. Optionally, the first support seat 21 includes a first bottom plate 211 for connecting the base 1, a first column 212 arranged on the first bottom plate 211, a first top plate 213 arranged at the top of the first column 212, and a first threaded sleeve 214 arranged on the first column 212. The first transverse positioning rod 22 is connected to the first threaded sleeve 214 by threading. The first transverse positioning rod 22 can be rotated to make it telescope and position in the transverse direction. The structure is simple, the operation is convenient, and the clamping is firm. Optionally, a first reinforcing rib 215 is arranged at the connecting end of the first bottom plate 211 and the first column 212. Optionally, a pressure plate connecting seat 216 is disposed on the first top plate 213 .

[0034] In this embodiment, the first clamping assembly 2 also includes a second support seat 23 symmetrically arranged on both sides of the reference block 11 and a second transverse positioning rod 24 arranged on the second support seat 23. The second transverse positioning rod 24 can move in the transverse direction and position itself after moving. By clamping the front axle welding frame 100 by moving the two second transverse positioning rods 24 toward each other, the clamping points in the X-axis direction can be increased, thereby improving the stability of the clamping of the front axle welding frame 100.

[0035] In this embodiment, a pressing plate 25 for limiting the clamping height of the front axle welding frame 100 is arranged on the first support seat 21 and the second support seat 23. The pressing plate 25 cooperates with the height adjustment assembly 4 to locate the position of the front axle welding frame 100 in the Z-axis direction. Optionally, the long sides of the pressing plate 25 on the first support seat 21 and the pressing plate 25 on the second support seat 23 are perpendicular to each other, and the front axle welding frame 100 can be limited from different directions to improve the stability of the clamping.

[0036] In this embodiment, the second clamping assembly 3 includes a third support seat 31 symmetrically arranged on both sides of the reference block 11, a first longitudinal positioning rod 32 arranged on the third support seat 31, a fourth support seat 33 symmetrically arranged on both sides of the reference block 11 and a second longitudinal positioning rod 34 arranged on the fourth support seat 33. The third support seat 31 and the fourth support seat 33 are arranged at intervals, and the first longitudinal positioning rod 32 and the second longitudinal positioning rod 34 can both move along the longitudinal direction and be positioned after moving. The sleeve 51 is arranged on the third support seat 31 along the transverse direction, and the first longitudinal positioning rod 32 and the second longitudinal positioning rod 34 move toward each other to clamp the front axle welding frame 100, which can locate the position of the front axle welding frame 100 in the Y-axis direction. The structure is simple and the clamping is firm. Optionally, the third support seat 31 includes a second bottom plate 311 for connecting the base 1, a second column 312 arranged on the second bottom plate 311, a second top plate 313 arranged on the top of the second column 312, a second threaded sleeve 314 arranged on the second column 312, and a third threaded sleeve 315 arranged on the second column 312. The sleeve 51 is connected to the second threaded sleeve 314 by threads, and the sleeve 51 can be rotated to make it telescopic and positioned in the transverse direction so that the center line 53 is aligned with the reference block 11. The first longitudinal positioning rod 32 is connected to the third threaded sleeve 315 by threads, and the first longitudinal positioning rod 32 can be rotated to make it telescopic and positioned in the longitudinal direction. The structure is simple, easy to operate, and firmly clamped. Optionally, the connecting end of the second bottom plate 311 and the second column 312 is provided with a second reinforcing rib 316.

[0037] like Figure 4As shown, in this embodiment, the fourth support seat 33 is provided with a third transverse positioning rod 35, and the third transverse positioning rod 35 moves along the transverse direction and is positioned after the movement. The third transverse positioning rod 35 can be used as an entry point for rough positioning, and can also cooperate with the first transverse positioning rod 22 and the second transverse positioning rod 24 to clamp the front axle welding frame 100, and can position the front axle welding frame 100 in the X-axis direction. The structure is simple and the clamping is firm.

[0038] In this embodiment, the height adjustment component 4 includes a fifth support seat 41 symmetrically arranged on both sides of the reference block 11 and a sixth support seat 42 symmetrically arranged on both sides of the reference block 11. The fifth support seat 41 and the sixth support seat 42 are arranged at intervals, and a lifting mechanism 43 is arranged on the fifth support seat 41 and / or the sixth support seat 42; the position of the front axle welding frame 100 in the Z-axis direction can be adjusted by the lifting mechanism 43, and the top flatness of the front axle welding frame 100 can be made less than 2 by adjusting the height of the two fifth support seats 41, by adjusting the height of the two sixth support seats 42, or by adjusting the height of the fifth support seat 41 and the sixth support seat 42 at the same time, so as to ensure the accuracy of subsequent processing.

[0039] In this embodiment, the fixture for the front axle welding frame also includes a marking ruler 6. A positioning piece 12 for abutting against the marking ruler 6 is arranged on the base 1. The positioning pieces 12 are symmetrically arranged on both sides of the reference block 11. When in use, the marking ruler 6 abuts against the positioning piece 12, so that the operator can mark the machining allowance of the part to be processed on the workpiece. Optionally, the positioning piece 12 is a flat plate, a groove or a boss. Optionally, the positioning piece 12 includes a first positioning step 121, a second positioning step 122 and a positioning plate 123. The first positioning step 121 is a Y-direction positioning reference. Its main function is to use the marking ruler 6 to align the center line of the flange surface of the front axle welding frame 100 to determine that the position of the front axle welding frame 100 in the Y direction coincides with the position of the fixture.

[0040] In this embodiment, the marking ruler 6 includes a bottom plate 61 and a backing plate 62 arranged perpendicular to each other. The backing plate 62 is provided with gaps 621 for marking, and the machining allowance of the to-be-processed part of the workpiece can be quickly and accurately marked through the gaps 621. Optionally, a weight-reducing hole 611 is provided on the bottom plate 61 to reduce the overall gravity of the marking ruler 6. The marking ruler 6 reduces the labor intensity of the operator and can improve the convenience of operation. Optionally, a third reinforcing rib 63 is arranged between the bottom plate 61 and the backing plate 62 to enhance the strength of the marking ruler 6 and prevent the marking ruler 6 from being deformed, thereby ensuring the marking accuracy.

[0041] In this embodiment, abutment pads are arranged on the ends of the first transverse positioning rod 22, the second transverse positioning rod 24, the third transverse positioning rod 35, the first longitudinal positioning rod 32 and the second longitudinal positioning rod 34 for abutting the front axle welding frame 100, which can avoid scratching the front axle welding frame 100 on the one hand, and increase friction to prevent the front axle welding frame 100 from slipping on the other hand. Optionally, a handle is arranged on the ends of the first transverse positioning rod 22, the second transverse positioning rod 24, the third transverse positioning rod 35, the first longitudinal positioning rod 32 and the second longitudinal positioning rod 34 away from the abutment pad to facilitate adjustment by the operator.

[0042] In this embodiment, the base 1 includes a frame 14 and a first support plate 15, a second support plate 16 and a third support plate 17 arranged on the frame 14, a first support seat 21, a fourth support seat 33 and a sixth support seat 42 are installed on the first support plate 15, a second support seat 23 and a fifth support seat 41 are installed on the second support plate 16, and a third support seat 31 is installed on the third support plate 17. Compared with using a whole support plate, using multiple small support plates can save materials on the one hand and reduce the weight of the entire fixture on the other hand. Optionally, a threaded fast 18 is arranged on the first support plate 15 to provide a fulcrum for clamping the front axle welding frame 100. Optionally, a first positioning step 121 is milled on the first support plate 15, and the first positioning step 121 is used in conjunction with a marking ruler 6 to quickly adjust and position the front axle welding frame 100 along the X direction. Optionally, a lifting lug 13 is arranged on the base 1 for easy lifting and transportation.

[0043] A machine tool comprises the above-mentioned fixture for welding the front axle frame.

[0044] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A fixture for welding a front axle frame, characterized in that: The device comprises a base (1), a first clamping assembly (2) for locating the lateral position of the front axle welding frame, a second clamping assembly (3) for locating the longitudinal position of the front axle welding frame, a height adjustment assembly (4) for adjusting the vertical position of the front axle welding frame, and a centering auxiliary mechanism (5) for adjusting the central position of the front axle welding frame. A reference block (11) is arranged on the base (1), and the centering auxiliary mechanism (5) comprises a sleeve (51) arranged on the second clamping assembly (3), a push rod (52) slidably embedded at both ends of the sleeve (51) for abutting against the front axle welding frame, and a center line (53) arranged on the sleeve (51) for aligning the reference block (11).

2. The fixture for welding the front axle frame according to claim 1, characterized in that: The first clamping assembly (2) comprises a first support seat (21) symmetrically arranged on both sides of the reference block (11) and a first transverse positioning rod (22) arranged on the first support seat (21); the first transverse positioning rod (22) can move in a transverse direction and be positioned after moving.

3. The fixture for welding the front axle frame according to claim 2, characterized in that: The first clamping assembly (2) further comprises a second support seat (23) symmetrically arranged on both sides of the reference block (11) and a second transverse positioning rod (24) arranged on the second support seat (23); the second transverse positioning rod (24) can move in a transverse direction and be positioned after moving.

4. The fixture for welding the front axle frame according to claim 3, characterized in that: A pressing plate (25) for limiting the clamping height of the front axle welding frame is arranged on the first supporting seat (21) and / or the second supporting seat (23).

5. The clamp for welding the front axle frame according to any one of claims 1 to 4, characterized in that: The second clamping assembly (3) comprises a third support seat (31) symmetrically arranged on both sides of the reference block (11), a first longitudinal positioning rod (32) arranged on the third support seat (31), a fourth support seat (33) symmetrically arranged on both sides of the reference block (11) and a second longitudinal positioning rod (34) arranged on the fourth support seat (33), the third support seat (31) and the fourth support seat (33) are arranged at intervals, the first longitudinal positioning rod (32) and the second longitudinal positioning rod (34) can both move in the longitudinal direction and be positioned after moving, and the sleeve (51) is arranged on the third support seat (31) in the transverse direction.

6. The fixture for welding the front axle frame according to claim 5, characterized in that: The fourth support seat (33) is provided with a third transverse positioning rod (35), and the third transverse positioning rod (35) moves in a transverse direction and is positioned after the movement.

7. The clamp for welding the front axle frame according to claim 1, 2, 3, 4 or 6, characterized in that: The height adjustment assembly (4) comprises a fifth support seat (41) symmetrically arranged on both sides of the reference block (11) and a sixth support seat (42) symmetrically arranged on both sides of the reference block (11); the fifth support seat (41) and the sixth support seat (42) are arranged at intervals; and a lifting mechanism (43) is arranged on the fifth support seat (41) and / or the sixth support seat (42).

8. The fixture for welding the front axle frame according to claim 7, characterized in that: It also comprises a marking ruler (6), and a positioning piece (12) for abutting against the marking ruler (6) is arranged on the base (1), and the positioning piece (12) is symmetrically arranged on both sides of the reference block (11).

9. The fixture for welding the front axle frame according to claim 8, characterized in that: The marking ruler (6) comprises a bottom plate (61) and a backing plate (62) which are arranged perpendicular to each other, and the backing plate (62) is provided with notches (621) for marking at intervals.

10. A machine tool, characterized in that: A clamp for a front axle welding frame comprising any one of claims 1 to 9.

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