A flexible machining center fixture for rough milling of flange surface of bridge housing

Abstract

The present invention discloses a flexible machining center fixture for rough milling of a bridge housing flange surface, which relates to the technical field of mechanical machining fixtures and comprises a fixture mounting base, which is detachably mounted on a milling machine work surface, and further comprises a clamping portion, a hydraulic centering clamping mechanism, a hydraulic pressing mechanism, a pneumatic tensioning mechanism and a smoothing and positioning mechanism arranged on the fixture mounting base, and the clamping portion can arbitrarily adjust the clamping size within a limited size range on a horizontal plane.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing fixtures, and in particular to a flexible machining center fixture for rough milling of a bridge housing flange surface. Background Art

[0002] The bridge housing is the basic component for installing the main reducer, differential, half-axle, wheel hub and suspension. Its main function is to support and protect the main reducer, differential and half-axle. At the same time, the bridge housing is the supporting and containing part of the main reducer, differential, half-axle and other components. The bridge housing will have different sizes according to the specifications of the contained parts. Therefore, a special fixture is required for each product during processing, and the fixture is not adjustable. When clamping the bridge housing with a conventional rough milling fixture, the center of the bridge housing needs to be aligned many times, and then it is manually locked and fixed. Therefore, for batch-processed bridge housings, this manual operation is very troublesome, the clamping time is long, and the positioning is difficult. Each clamping is not completed in one go, and multiple adjustments are required after clamping, resulting in extremely low work efficiency. In addition, the fixture has poor compatibility, a large number of fixtures, high production costs, and is not easy to maintain. Summary of the invention

[0003] In view of the above shortcomings, the present invention provides a flexible machining center fixture for rough milling of the bridge housing flange surface, which can solve the problems mentioned in the background technology. The fixture of the present invention utilizes pneumatic positioning and hydraulic clamping, which eliminates the tedious manual operation and improves the clamping efficiency. Moreover, the fixture of the present invention has high compatibility and can clamp products of different specifications and models with simple adjustments. A set of fixture can be compatible with multiple products, thereby reducing production costs.

[0004] In order to achieve the above object, the present invention adopts the following technical scheme:

[0005] A flexible machining center fixture for rough milling of a bridge housing flange surface comprises a fixture mounting base, wherein the fixture mounting base is fixedly mounted on a milling machine worktable, the fixture mounting base is provided with a first end and a second end opposite to each other, and a clamping portion is slidably provided on the first end and the second end, the clamping portion is connected to the fixture mounting base by a locking connection portion, and the relative approach / distance of the clamping portion realizes the clamping / loosening of the workpiece.

[0006] A further preferred solution of the present invention is that a locking groove is provided on the upper surface of the clamp mounting base, the locking connection part is slidably arranged in the locking groove, the locking connection part includes a T-bolt and a nut, the head of the T-bolt is slidably arranged in the locking groove, the tail of the T-bolt is connected to the clamping part, and the nut and the T-bolt are in a threaded connection relationship.

[0007] A further preferred solution of the present invention is that the clamping part includes a slide rail, a slider, a clamping plate, a support, a supporting plate and a mounting plate, the slide rail is arranged on the fixture mounting base, the slider is slidably installed on the slide rail, the supporting plate is fixedly installed on the slider, the support is provided on the supporting plate, the support is provided on the support, the clamping plate is vertically arranged on the mounting plate, and the two relative clamping plates realize clamping / relaxing of the workpiece in the process of relative approaching / moving away.

[0008] A further preferred scheme of the present invention is that a hydraulic centering clamping mechanism is provided on the mounting plate, the center position of the mounting plate is dug through, the hydraulic centering clamping mechanism comprises a centering clamping plate, a second slide rail, a second slider, a connecting piece and a hydraulic telescopic cylinder, the hydraulic telescopic cylinder is installed on the supporting plate, the second slider is provided on the opposite surface of the clamping plate, the mounting plate is provided with the second slider, the second slide rail is slidably connected to the second slider, the second slide rail is installed on the centering clamping plate, a notch is provided on either side of the centering clamping plate, and the notches between the centering clamping plates are opposite to each other, one end of the connecting piece is connected to the centering clamping plate, and the other end passes through the center hole of the mounting plate and is connected to the output end of the hydraulic telescopic cylinder, and the centering clamping plate and the centering clamping plate are moved closer / farther away from each other by the driving of the hydraulic telescopic cylinder to realize centering clamping / relaxation of the workpiece.

[0009] A further preferred solution of the present invention is that a hydraulic clamping mechanism is provided on both sides of the middle position of the clamp mounting base, and the hydraulic clamping mechanism includes a support block, a second hydraulic telescopic cylinder and a clamping plate. A plurality of support blocks are provided on both sides of the middle position of the clamp mounting base, the second hydraulic telescopic cylinder is provided on the support block, and a clamping plate is installed on the output end of the second hydraulic telescopic cylinder.

[0010] A further preferred solution of the present invention is that a rubber pad is provided on the contact surface between the clamping plate and the workpiece.

[0011] A further preferred solution of the present invention is that a pneumatic tensioning mechanism is provided between the hydraulic pressing mechanisms.

[0012] A further preferred scheme of the present invention is that a smoothing positioning mechanism is provided at the middle position of the clamp mounting base, and the smoothing positioning mechanism includes a mounting frame, a third slide rail, a third slider, a spring, a center mounting rod, a limit block, a mounting base plate and a smoothing block, the third slide rail is arranged on the opposite surface of the mounting frame, the third slider is slidably arranged on the third slide rail, the mounting base plate is horizontally framed in the mounting frame, the center mounting rod is fixedly arranged in the middle of the mounting base plate, the spring is sleeved on the center mounting rod, the smoothing block is installed on one side of the moving direction of the third slider, a through hole is provided in the middle of the smoothing block, and the center mounting rod passes through the through hole, the spring is arranged between the mounting base plate and the smoothing block, and the limit block is arranged on the opposite ends of the mounting frame.

[0013] A further preferred solution of the present invention is that a smoothing rubber pad is provided on the smoothing block.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention provides a flexible machining center fixture for rough milling of the flange surface of a bridge housing, and the clamping size of the machining fixture can be arbitrarily adjusted within a limited size range on the horizontal plane.

[0016] 2. The hydraulic centering clamping mechanism of the present invention can center and fix the workpiece while clamping it.

[0017] 3. The hydraulic clamping mechanism of the present invention can achieve a clamping effect on the workpiece in the longitudinal direction.

[0018] 5. The smoothing and positioning mechanism of the present invention utilizes the elastic potential energy of the spring to reciprocately smooth and adjust the workpiece, so that when the workpiece is placed at will, the compression and rebound of the spring can smooth and calibrate the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0020] Figure 1 It is a three-dimensional schematic diagram of the overall assembly of the present invention;

[0021] Figure 2 It is a front view of the overall structure of the present invention;

[0022] Figure 3 It is a side view of the overall structure of the present invention.

[0023] Among them, the markings shown in the figure are: 1. clamp mounting base; 2. first end; 3. second end; 4. locking slide groove; 5. T-bolt; 6. nut; 7. slide rail; 8. slider; 9. clamping plate; 10. support; 11. support plate; 12. mounting plate; 13. centering clamping plate; 14. second slide rail; 15. second slider; 16. connecting plate; 17. hydraulic telescopic cylinder; 18. support block; 19. second hydraulic telescopic cylinder; 20. clamping plate; 21. pneumatic tensioning mechanism; 22. mounting frame; 23. third slide rail; 24. third slider; 25. spring; 26. center mounting rod; 27. limit block; 28. mounting base; 29. ​​leveling block; 30. leveling rubber pad. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the term "inside" etc. is based on the orientation or positional relationship shown in the accompanying drawings, or is the orientation or positional relationship in which the product of the invention is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0027] Please refer to Figure 1 , Figure 2 and Figure 3As shown, a preferred embodiment of the present invention provides a flexible machining center fixture for rough milling of a bridge housing flange surface, including a fixture mounting base 1, wherein the fixture mounting base 1 is fixedly mounted on a milling machine worktable, the fixture mounting base 1 is provided with a first end 2 and a second end 3 relative to each other, and a clamping portion is slidably provided on the first end 2 and the second end 3, the clamping portion and the fixture mounting base 1 are connected by a locking connection portion (a locking groove 4 is provided on the upper surface of the fixture mounting base 1, the locking connection portion is slidably arranged in the locking groove 4, the locking connection portion includes a T-bolt 5 and a nut 6, the head of the T-bolt 5 is slidably clamped in the locking groove 4, the tail of the T-bolt 5 is connected to the clamping portion, and the nut 6 and the T-bolt 5 are in a threaded connection relationship), the clamping / loosening of the workpiece is achieved by manually adjusting the relative approach / distance of the clamping portion, and then the workpiece can be clamped on the operating table by tightening the nut 6.

[0028] The specific structure of the clamping part is as follows:

[0029] In a preferred embodiment of the present invention, the clamping part includes a slide rail 7, a slider 8, a clamping plate 9, a support 10, a supporting plate 11 and a mounting plate 12, the slide rail 7 is arranged on the fixture mounting base 1, the slider 8 is slidably installed on the slide rail 7, the supporting plate 11 is fixedly installed on the slider 8, the support 10 is provided on the supporting plate 11, the supporting plate 12 is provided on the support 10, the clamping plate 9 is vertically arranged on the mounting plate 12, and the two relative clamping plates 9 realize clamping / relaxing of the workpiece during the process of relative approach / distance.

[0030] In a preferred embodiment of the present invention, a hydraulic centering clamping mechanism is provided on the mounting plate 12, the center position of the mounting plate 12 is dug through, the hydraulic centering clamping mechanism includes a centering clamping plate 13, a second slide rail 14, a second slider 15, a connecting piece 16 and a hydraulic telescopic cylinder 17, the hydraulic telescopic cylinder 17 is installed on the supporting plate 11, the second slider 15 is provided on the opposite surface of the clamping plate 9, the second slider 15 is provided on the mounting plate 12, the second slide rail 14 is slidably connected with the second slider 15, the second slide rail 14 is installed on the centering clamping plate 13, the A notch is provided on either side of the centering clamping plate 13, and the notches between the centering clamping plates 13 are opposite to each other. One end of the connecting piece 16 is connected to the centering clamping plate 13, and the other end passes through the center hole of the mounting plate 12 and is connected to the output end of the hydraulic telescopic cylinder 17. The output end of the hydraulic telescopic cylinder 17 is extended or retracted by the driving of the hydraulic telescopic cylinder 17, thereby linking the connecting piece 16 to pull the centering clamping plate 13 to slide on the second slide rail 14, so that the centering clamping plate 13 and the centering clamping plate 13 are moved closer / farther away from each other, thereby realizing the centering clamping / relaxation of the workpiece.

[0031] In a preferred embodiment of the present invention, a hydraulic clamping mechanism is provided on both sides of the middle position of the clamp mounting base 1, and the hydraulic clamping mechanism includes a support block 18, a second hydraulic telescopic cylinder 19 and a clamping plate 20. A plurality of support blocks 18 are provided on both sides of the middle position of the clamp mounting base 1, the second hydraulic telescopic cylinder 19 is provided on the support block 18, and a clamping plate 20 is installed on the output end of the second hydraulic telescopic cylinder 19; a rubber pad is provided on the contact surface between the clamping plate 20 and the workpiece.

[0032] In a preferred embodiment of the present invention, a pneumatic tensioning mechanism 21 is provided between the hydraulic pressing mechanisms, and the pneumatic tensioning mechanism 21 is a known structure and can be configured and purchased on the market.

[0033] In a preferred embodiment of the present invention, a smoothing positioning mechanism is provided at the middle position of the clamp mounting base 1, and the smoothing positioning mechanism includes a mounting frame 22, a third slide rail 23, a third slider 24, a spring 25, a central mounting rod 26, a limit block 27, a mounting base plate 28 and a smoothing block 29. The third slide rail 23 is arranged on the opposite surface of the mounting frame 22, the third slider 24 is slidably arranged on the third slide rail 23, the mounting base plate 28 is horizontally mounted in the mounting frame 22, the central mounting rod 26 is fixedly arranged in the middle of the mounting base plate 28, and the spring 25 is sleeved on the third slide rail 23. The smoothing block 29 is installed on the center mounting rod 26 on one side of the moving direction of the third slider 24. A through hole is provided in the middle of the smoothing block 29, and the center mounting rod 26 passes through the through hole. The spring 25 is provided between the mounting base 28 and the smoothing block 29. The limit blocks 27 are provided on the opposite ends of the mounting frame 22. The smoothing positioning mechanism of the present invention utilizes the elastic potential energy of the spring to reciprocately smooth and adjust the workpiece, so that when the workpiece is placed at will, the compression and rebound of the spring can smooth and calibrate the workpiece. A smoothing rubber pad 30 is provided on the smoothing block 29.

[0034] Based on the description of the above embodiments, the present invention provides a flexible machining center fixture for rough milling of the flange surface of a bridge housing. The clamping size of the machining fixture can be arbitrarily adjusted within a limited size range on the horizontal plane; the hydraulic centering clamping mechanism of the present invention can center and fix the workpiece while clamping the workpiece; the hydraulic clamping mechanism of the present invention can realize a clamping effect on the workpiece in the longitudinal direction; the smoothing and positioning mechanism of the present invention can reciprocally smooth and adjust the workpiece by utilizing the elastic potential energy of the spring, so that the workpiece can be placed at will and the compression and rebound of the spring can smooth and calibrate the workpiece.

[0035] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A flexible machining center fixture for rough milling of axle housing flange surface, characterized in that: The invention comprises a fixture mounting base (1), wherein the fixture mounting base (1) is fixedly mounted on a working table of a milling machine, wherein the fixture mounting base (1) is provided with a first end (2) and a second end (3) opposite to each other, and a clamping part is slidably provided on the first end (2) and the second end (3), and the clamping part is connected to the fixture mounting base (1) via a locking connection part; The clamping part comprises a slide rail (7), a slider (8), a clamping plate (9), a support (10), a supporting plate (11) and a mounting plate (12); the slide rail (7) is arranged on the fixture mounting base (1); the slider (8) is slidably mounted on the slide rail (7); the supporting plate (11) is fixedly mounted on the slider (8); the supporting plate (11) is provided with the support (10); the supporting plate (12) is provided on the support (10); the clamping plate (9) is vertically arranged on the mounting plate (12); and the two opposite clamping plates (9) realize clamping / relaxing of the workpiece in the process of relative approach / distance; The mounting plate (12) is provided with a hydraulic centering clamping mechanism, the center position of the mounting plate (12) is dug through, the hydraulic centering clamping mechanism comprises a centering clamping plate (13), a second slide rail (14), a second slider (15), a connecting plate (16) and a hydraulic telescopic cylinder (17), the hydraulic telescopic cylinder (17) is installed on the supporting plate (11), the second slider (15) is provided on the opposite surface of the clamping plate (9), the mounting plate (12) is provided with the second slider (15), the second slide rail (14) is slidably connected to the second slider (15), the The second slide rail (14) is installed on the centering clamping plate (13), and a notch is provided on either side of the centering clamping plate (13), and the notches between the centering clamping plates (13) and the centering clamping plates (13) are opposite to each other. One end of the connecting plate (16) is connected to the centering clamping plate (13), and the other end passes through the center hole of the mounting plate (12) and is connected to the output end of the hydraulic telescopic cylinder (17). By driving the hydraulic telescopic cylinder (17), the centering clamping plates (13) and the centering clamping plates (13) are moved closer to / away from each other, thereby realizing the centering clamping / relaxation of the workpiece. A hydraulic clamping mechanism is provided on both sides of the middle position of the clamp mounting base (1), and the hydraulic clamping mechanism comprises a support block (18), a second hydraulic telescopic cylinder (19) and a clamping plate (20). A plurality of support blocks (18) are provided on both sides of the middle position of the clamp mounting base (1), the second hydraulic telescopic cylinder (19) is arranged on the support block (18), and a clamping plate (20) is installed on the output end of the second hydraulic telescopic cylinder (19); A leveling and positioning mechanism is provided at the middle position of the clamp mounting base (1), and the leveling and positioning mechanism comprises a mounting frame (22), a third slide rail (23), a third slider (24), a spring (25), a central mounting rod (26), a limit block (27), a mounting base plate (28) and a leveling block (29), wherein the third slide rail (23) is arranged on the opposite surface of the mounting frame (22), the third slider (24) is slidably arranged on the third slide rail (23), and the mounting base plate (28) is horizontally mounted on the mounting frame (2 2), the central mounting rod (26) is fixedly arranged in the middle of the mounting base plate (28), the spring (25) is sleeved on the central mounting rod (26), the smoothing block (29) is installed on one side of the moving direction of the third slider (24), a through hole is provided in the middle of the smoothing block (29), and the central mounting rod (26) passes through the through hole, the spring (25) is arranged between the mounting base plate (28) and the smoothing block (29), and the limit blocks (27) are arranged on the opposite ends of the mounting frame (22).

2. According to claim 1, a flexible machining center fixture for rough milling of axle housing flange surface, characterized in that: The upper surface of the clamp mounting base (1) is provided with a locking groove (4), and the locking connection part is slidably arranged in the locking groove (4). The locking connection part includes a T-bolt (5) and a nut (6). The head of the T-bolt (5) is slidably arranged in the locking groove (4), and the tail of the T-bolt (5) is connected to the clamping part. The nut (6) and the T-bolt (5) are in a threaded connection relationship.

3. The flexible machining center fixture for rough milling of the flange surface of the bridge housing according to claim 1, characterized in that: A rubber pad is provided on the contact surface between the pressing plate (20) and the workpiece.

4. The flexible machining center fixture for rough milling of the flange surface of the bridge housing according to claim 1, characterized in that: A pneumatic tensioning mechanism (21) is provided between the hydraulic pressing mechanisms.

5. The flexible machining center fixture for rough milling of the flange surface of the bridge housing according to claim 1, characterized in that: The smoothing block (29) is provided with a smoothing rubber pad (30).

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