Cutting tool special for front sliding column lower support

Abstract

The utility model discloses a special cutting tool for a lower bracket of a front sliding column, which belongs to the technical field of automobile accessory processing, comprises a bottom plate, and is characterized by further comprising an inner support device, a guide alignment block and a pressing device, the inner supporting device is arranged at one end above the bottom plate; the pair of guide alignment blocks is symmetrically arranged above the inner support device; the two pressing devices are symmetrically arranged on the two sides of the inner supporting device. A first supporting seat is arranged above the bottom plate; the inner supporting device comprises a shell, a push rod, an inclined wedge block, a supporting column, a contact screw, an end cover and a parallel oil cylinder. The shell is fixedly connected to the first supporting seat; the push rod is movably arranged in the shell. Compared with the prior art, the front sliding column lower support cutting device is safe and reliable in operation, high in machining precision and production efficiency and stable in product quality, and effectively guarantees the machining precision and capacity requirements when a specific portion of a front sliding column lower support is cut.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing, and more specifically, it belongs to a special cutting tool for the lower front strut bracket. Background Art

[0002] The lower front strut bracket is a part in the front suspension system of an automobile, mainly used in the double-wishbone independent suspension system of the automobile. One end of it is used to connect the shock absorber support cylinder, and the other end is connected to the lower arm of the vehicle frame and the wheel hub.

[0003] At present, a numerical control sawing machine is often used to cut and process specific parts of the lower front strut bracket. However, the lower front strut bracket is a special-shaped part, and conventional tooling fixtures cannot meet the processing accuracy and production capacity requirements of the lower front strut bracket. Summary of the Invention

[0004] The purpose of the utility model is to overcome the deficiencies of the above traditional technologies, and provide a special cutting tool for the lower front strut bracket, so as to solve the problem that the current numerical control sawing machine using conventional tooling fixtures to cut and process specific parts of the lower front strut bracket cannot meet the processing accuracy and production capacity requirements.

[0005] The special cutting tool for the lower front strut bracket provided by the utility model includes a bottom plate. Its characteristics are that it also includes an inner support device, a guiding and aligning block, and a pressing device; the inner support device is arranged at one end above the bottom plate; the guiding and aligning blocks are a pair, symmetrically arranged above the inner support device; the pressing devices are two sets, symmetrically arranged on both sides of the inner support device;

[0006] A first support seat is arranged above the bottom plate; the inner support device includes a housing, a push rod, a wedge block, a support column, a contact screw, an end cover, and a parallel oil cylinder;

[0007] The housing is connected and fixed to the first support seat;

[0008] The push rod is movably arranged in the housing; the push rod is coaxial with the housing, and the push rod can move translationally along the central axis of the housing;

[0009] The wedge block includes a connecting part and a joint part; the connecting part is fixedly arranged at one end of the joint part; the connecting part extends into one end of the push rod and is mechanically connected with the push rod; three wedge grooves are arranged in a circumferential array on the circumferential side of the joint part, and the wedge grooves are inclined from high to low from the end of the joint part close to the connecting part to the end of the joint part far from the connecting part; the wedge block is located in the housing and is coaxial with the housing, and the wedge block can move translationally along the central axis of the housing; the moving cavity of the wedge block in the housing penetrates one end of the housing, and an end cover is connected and fixed to one end of the housing where the moving cavity of the wedge block is located;

[0010] One end of the support column is processed into a slider that matches the wedge groove; there are three support columns, and their sliders respectively match the three wedge grooves of the inclined wedge block; contact screws are threadedly connected to the ends of the support columns away from the inclined wedge block, and the contact screws are arc-headed screws; three through holes distributed in a circular array are formed on the circumferential side of the outer shell, and the through holes penetrate the moving cavity of the inclined wedge block inside the outer shell; the support columns and the contact screws are located in the through holes and are in clearance fit with the through holes respectively;

[0011] The parallel oil cylinder is fixedly connected above the bottom plate, and the parallel oil cylinder is located at one end of the outer shell away from the end cover; the piston rod of the parallel oil cylinder extends into the inner part of the outer shell from one end of the outer shell close to the parallel oil cylinder, and the end of the piston rod of the parallel oil cylinder is mechanically connected to one end of the push rod away from the inclined wedge block.

[0012] Further, the guiding and aligning block is a rectangular block, which is fixedly connected above the first support seat and the parallel oil cylinder; the end position of the guiding and aligning block corresponds to the position of the support column.

[0013] Further, each set of the pressing device includes a rotary oil cylinder and a clamping jaw, and the clamping jaw is mechanically connected to the piston rod of the rotary oil cylinder; second support seats are respectively arranged on both sides of the first support seat, and the second support seats are fixedly connected above the bottom plate; the rotary oil cylinders are respectively fixedly connected to the second support seats.

[0014] Further, a plunger assembly is also included; the plunger assembly includes a plunger head and a plunger rod; the plunger head is a stepped shaft structure with a smaller upper part and a larger lower part, and a through hole is formed in the middle of the plunger head; the diameter of the plunger rod matches the through hole, and the plunger rod is inserted into the through hole; a positioning hole is formed in the bottom plate, and the diameter of the positioning hole matches the large head diameter of the plunger head; the plunger head is stuck at the positioning hole.

[0015] A special cutting tooling for the front slide column lower bracket provided by the utility model mainly designs an inner support device, a guiding and aligning block and a pressing device.

[0016] The cutting end of the front slide column lower bracket is in a cylindrical shape. During cutting processing, the cutting end is sleeved on one end of the outer shell close to the end cover. At this time, the through hole is located inside the cutting end of the front slide column lower bracket; and the inner support device drives the parallel oil cylinder, and through the transmission of the push rod, it controls the inclined wedge block to perform a translational movement along the moving cavity inside the outer shell; when the inclined wedge block moves towards the end cover direction, the support column is pushed by the inclined wedge block to extend out of the outer shell along the through hole through the cooperation between its slider and the wedge groove, realizing three-point self-centering of the cutting end of the front slide column lower bracket, ensuring the processing accuracy of the front slide column lower bracket, and also being able to realize inner support type clamping of the cutting end of the front slide column lower bracket, reducing the influence of oil pressure fluctuation; on the contrary, when the inclined wedge block moves towards the direction away from the end cover, the support column loses the driving force of the inclined wedge block through the cooperation between its slider and the wedge groove, and the support column will retract and reset into the outer shell along the through hole, releasing the centering and locking effects on the front slide column lower bracket.

[0017] When the guiding alignment block is sleeved on the outer shell at the cutting end of the front sliding column lower bracket, it plays a role of limiting and guiding, ensuring that whether it is manual feeding or mechanical automatic feeding, one-time clamping and positioning can be achieved.

[0018] There are two sets of pressing devices, symmetrically arranged on both sides of the inner supporting device. By driving the rotating oil cylinder, the clamping jaws are controlled to rotate towards the inside or outside simultaneously. When the inner supporting device completes centering and locking of the front sliding column lower bracket, the clamping jaws rotate towards the inside simultaneously, achieving Y-shaped double-point pressing on the end of the cutting end of the front sliding column lower bracket, reducing the vibration of the workpiece and effectively ensuring the machining rigidity; conversely, when the clamping jaws rotate towards the outside simultaneously, the pressing on the front sliding column lower bracket can be released.

[0019] The utility model can also be provided with a plunger assembly according to actual needs. At the tail U-shaped end of the front sliding column lower bracket during processing on the bottom plate, a plunger head is provided to support the front sliding column lower bracket, and a plunger rod is inserted into the round hole at the tail U-shaped end of the front sliding column lower bracket and then into the plunger head in sequence to limit the front sliding column lower bracket and prevent it from tipping over.

[0020] As can be seen from the above, compared with the prior art, the utility model is safe and reliable in operation, has high machining accuracy, high production efficiency, and stable product quality, effectively ensuring the machining accuracy and production capacity requirements during the cutting process of specific parts of the front sliding column lower bracket. Description of the Drawings

[0021] Figure 1 is the application structure schematic diagram of the utility model;

[0022] Figure 2 is the structure schematic diagram of the utility model;

[0023] Figure 3 is the utility model composed of Figure 2 the internal structure schematic diagram of A led out;

[0024] Figure 4 is the front view of the utility model;

[0025] Figure 5 is the utility model composed of Figure 4 the sectional view taken along line B-B led out;

[0026] Figure 6 is the top view of the utility model;

[0027] Figure 7 is the structure schematic diagram of the inclined wedge block of the utility model;

[0028] Figure 8 is the structure schematic diagram of the support column of the utility model.

[0029] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0030] 1. Base plate; 11. Positioning hole; 2. Inner support device; 21. Outer shell; 211. Through hole; 22. Push rod; 23. Wedge block; 231. Connecting part; 232. Joint head; 2321. Wedge groove; 24. Support column; 241. Slide block; 25. Contact screw; 26. End cover; 27. Parallel oil cylinder; 3. Guide alignment block; 4. Pressing device; 41. Rotary oil cylinder; 42. Claw; 5. First support seat; 6. Second support seat; 7. Plunger assembly; 71. Plunger head; 711. Through hole; 72. Plunger rod; 8. Lower bracket of front sliding column; 9. Saw blade. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" 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 directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0034] The present invention provides a special cutting tooling for the lower bracket of the front sliding column, including a base plate 1, an inner support device 2, a guide alignment block 3, a pressing device 4, and a plunger assembly 7.

[0035] Above the bottom plate 1, a first support seat 5 is fixedly installed by means of bolts. The inner support device 2 includes a housing 21, a push rod 22, a wedge block 23, a support column 24, a contact screw 25, an end cover 26 and a parallel oil cylinder 27. The housing 21 is fixedly installed on the first support seat 5 by means of screws. The push rod 22 is movably arranged inside the housing 21; the push rod 22 is coaxial with the housing 21, and the push rod 22 can move translationally along the central axis of the housing 21.

[0036] Refer to the appendix Figure 7 , the wedge block 23 includes a connecting portion 231 and a joint portion 232. The connecting portion 231 is a screw rod, which is welded to one end of the joint portion 232. One end of the push rod 22 is provided with a threaded hole that matches the connecting portion 231, and the connecting portion 231 is threadedly fitted in the threaded hole at one end of the push rod 22. Three wedge grooves 2321 are arranged in a circular array on the circumferential side of the joint portion 232, and the wedge grooves 2321 are inclined from high to low from the end of the joint portion 232 close to the connecting portion 231 to the end of the joint portion 232 far from the connecting portion 231. The wedge block 23 is located inside the housing 21 and is coaxial with the housing 21. The wedge block 23 can move translationally along the central axis of the housing 21. The moving cavity of the wedge block 23 inside the housing 21 penetrates through one end of the housing 21. An end cover 26 is fixedly installed at one end of the housing 21 where the wedge block 23 moves through screws, and the end cover 26 plays a role of sealing and dust prevention.

[0037] Refer to the appendix Figure 8 , one end of the support column 24 is processed into a slider 241 that matches the wedge groove 2321. There are three support columns 24, and their sliders 241 respectively match the three wedge grooves 2321 of the wedge block 23. Contact screws 25 are threadedly connected to the ends of the support columns 24 far from the wedge block 23, and the contact screws 25 are arc-headed screws. Three through holes 211 are arranged in a circular array on the circumferential side of the housing 21, and the through holes 211 penetrate through the moving cavity of the wedge block 23 inside the housing 21. The support columns 24 and the contact screws 25 are located in the through holes 211 and are respectively in clearance fit with the through holes 211.

[0038] The parallel oil cylinder 27 is fixedly installed above the bottom plate 1 by means of bolts. The parallel oil cylinder 27 is located at one end of the housing 21 away from the end cover 26. The piston rod of the parallel oil cylinder 27 extends into the inside of the housing 21 from one end of the housing 21 close to the parallel oil cylinder 27, and the end of the piston rod of the parallel oil cylinder 27 is mechanically connected to the end of the push rod 22 away from the wedge block 23.

[0039] The cutting end of the front sliding column lower bracket 8 is cylindrical. During cutting, the cutting end of the front sliding column lower bracket 8 is sleeved on one end of the housing 21 close to the end cover 26. At this time, the through hole 211 is located inside the cutting end of the front sliding column lower bracket 8. The inner support device 2 drives the push rod 22 to move parallel inside the housing 21 by driving the parallel oil cylinder 27, and then controls the wedge block 23 to perform a translational movement along the movable cavity inside the housing 21. When the wedge block 23 moves towards the end cover 26, the support column 24 is pushed by the wedge block 23 to extend out of the housing 21 along the through hole 211 through the cooperation between its slider 241 and the wedge groove 2321, so that the contact screw 25 abuts against the inside of the cutting end of the front sliding column lower bracket 8, realizing three-point self-centering of the cutting end of the front sliding column lower bracket 8, ensuring the machining accuracy of the front sliding column lower bracket 8, and being able to realize inner support clamping of the cutting end of the front sliding column lower bracket 8, reducing the influence of oil pressure fluctuation. On the contrary, when the wedge block 23 moves away from the end cover 26, the support column 24 loses the driving force of the wedge block 23 through the cooperation between its slider 241 and the wedge groove 2321, and the support column 24 will retract and reset into the housing 21 along the through hole 211, and the contact screw 25 no longer abuts against the inside of the cutting end of the front sliding column lower bracket 8, releasing the centering and locking functions of the front sliding column lower bracket.

[0040] There are a pair of guiding and aligning blocks 3, which are symmetrically arranged above the inner support device 2. The guiding and aligning blocks 3 are rectangular blocks, and are fixedly arranged above the first support seat 5 and the parallel oil cylinder 27 through screw cooperation. The end position of the guiding and aligning blocks 3 corresponds to the position of the support column 24. The guiding and aligning blocks 3 play a role of limiting and guiding when the cutting end of the front sliding column lower bracket 8 is sleeved on the housing 21, ensuring that whether it is manual feeding or mechanical automatic feeding, one-time clamping and positioning can be realized.

[0041] There are two sets of pressing devices 4, which are symmetrically arranged on both sides of the inner support device 2. Each set of the pressing devices 4 includes a rotary oil cylinder 41 and a clamping jaw 42, and the clamping jaw 42 is mechanically connected to the piston rod of the rotary oil cylinder 41. Second support seats 6 are respectively arranged on both sides of the first support seat 5, and the second support seats 6 are fixedly arranged above the bottom plate 1 through bolt cooperation; the rotary oil cylinders 41 are respectively fixedly arranged with the second support seats 6 through screw cooperation.

[0042] After the inner support device 2 completes centering and locking of the front sliding column lower bracket, by driving the rotary oil cylinder 41, the clamping jaws 42 are driven to rotate inwards simultaneously, realizing Y-shaped double-point pressing on the end of the cutting end of the front sliding column lower bracket 8, achieving the effect of reducing workpiece vibration and effectively ensuring machining rigidity; on the contrary, controlling the clamping jaws 42 to rotate outwards simultaneously can release the pressing on the front sliding column lower bracket 8.

[0043] The plunger assembly 7 includes a plunger head 71 and a plunger rod 72. The plunger head 71 has a stepped shaft structure with a smaller upper part and a larger lower part, and a through hole 711 is provided in the middle of the plunger head 71. The diameter of the plunger rod 72 is matched with the through hole 711, and the plunger rod 72 is inserted into the through hole 711. The bottom plate 1 is provided with a positioning hole 11, and the diameter of the positioning hole 11 is matched with the large head diameter of the plunger head 71; the plunger head 71 is clamped at the positioning hole 11.

[0044] The utility model can also set the plunger assembly 7 according to actual needs. The plunger head 71 supports the tail U-shaped end of the front sliding column lower bracket 8 during the processing of the bottom plate 1. The plunger rod 72 is sequentially inserted into the round hole at the tail U-shaped end of the front sliding column lower bracket 8 and the plunger head 71 to limit the front sliding column lower bracket 8 and prevent it from tipping over.

[0045] The specific usage mode and function of this embodiment:

[0046] First, manually or by an automated machine, the cutting end of the front sliding column lower bracket 8 is sleeved on one end of the housing 21 close to the end cover 26 until the front sliding column lower bracket 8 abuts against the guiding and aligning block 3; as needed, the tail U-shaped end of the front sliding column lower bracket 8 is placed on the plunger head 71, and the plunger rod 72 is sequentially inserted into the round hole at the tail U-shaped end of the front sliding column lower bracket 8 and the plunger head 71; then the parallel oil cylinder 27 is driven to push the wedge block 23 to move towards the end cover 26, and the support column 24 is controlled to extend out of the housing 21 along the through hole 211 until the contact screw 25 abuts against the inside of the cutting end of the front sliding column lower bracket 8, completing the three-point self-centering and inner support clamping of the cutting end of the front sliding column lower bracket 8; next, the rotary oil cylinder 41 is driven to control the jaws 42 to rotate inwards simultaneously to perform Y-shaped double-point pressing on the end of the cutting end of the front sliding column lower bracket 8. Finally, the saw blade 9 can be operated to perform the cutting operation on the cutting end of the front sliding column lower bracket 8.

[0047] After the cutting operation is completed, the plunger rod 72 is withdrawn and disassembled from the plunger head 71 and the front sliding column lower bracket 8; the rotary oil cylinder 41 is driven to control the jaws 42 to rotate outwards simultaneously; finally, the parallel oil cylinder 27 is driven to drive the wedge block 23 to move back to its original position, and the support column 24 is controlled to retract back into the housing 21 along the through hole 211. After the contact screw 25 no longer abuts against the inside of the cutting end of the front sliding column lower bracket 8, the processed front sliding column lower bracket 8 can be taken out.

[0048] In summary, compared with the prior art, the utility model is safe and reliable in operation, has high machining accuracy, high production efficiency, and stable product quality, effectively ensuring the machining accuracy and production capacity requirements when cutting and processing specific parts of the front sliding column lower bracket.

Claims

1. A cutting tool for a front strut lower bracket, comprising a bottom plate (1), characterized in that: It also includes an inner support device (2), a guide alignment block (3) and a clamping device (4); the inner support device (2) is arranged at one end above the base plate (1); the guide alignment blocks (3) are a pair, symmetrically arranged above the inner support device (2); the clamping device (4) is two sets, symmetrically arranged on both sides of the inner support device (2); A first support seat (5) is arranged above the bottom plate (1); the inner support device (2) comprises a housing (21), a push rod (22), an inclined wedge block (23), a support column (24), a contact screw (25), an end cover (26) and a parallel oil cylinder (27); The housing (21) is connected and fixed on the first support seat (5); The push rod (22) is movably arranged in the housing (21); the push rod (22) is coaxial with the housing (21), and the push rod (22) can move in translation along the central axis of the housing (21); The inclined wedge block (23) comprises a connecting portion (231) and a joint portion (232); the connecting portion (231) is fixedly arranged at one end of the joint portion (232); the connecting portion (231) extends into one end of the push rod (22) and is mechanically connected to the push rod (22); three wedge grooves (2321) arranged in a ring are formed on the circumferential side of the joint portion (232), and the wedge grooves (2321) are inclined from high to low from one end of the joint portion (232) close to the connecting portion (231) to one end of the joint portion (232) far from the connecting portion (231); the inclined wedge block (23) is located in the housing (21) and is coaxial with the housing (21), and the inclined wedge block (23) can move in translation along the central axis of the housing (21); the moving cavity of the inclined wedge block (23) in the housing (21) passes through one end of the housing (21), and the housing (21) is connected and fixed with an end cover (26) at one end of the moving cavity of the inclined wedge block (23); One end of the support column (24) is processed into a slider (241) that matches the wedge groove (2321); there are three support columns (24), and the sliders (241) thereof respectively match the three wedge grooves (2321) of the inclined wedge block (23); each support column (24) is threadedly connected with a contact screw (25) at one end away from the inclined wedge block (23), and the contact screw (25) is an arc-shaped head screw; three through holes (211) distributed in a ring are opened on the peripheral side of the housing (21), and the through holes (211) penetrate the movable cavity of the inclined wedge block (23) inside the housing (21); the support column (24) and the contact screw (25) are located in the through holes (211), and respectively match with the through holes (211) with clearance; The parallel oil cylinder (27) is connected and fixed above the bottom plate (1), and is located at an end of the housing (21) away from the end cover (26); a piston rod of the parallel oil cylinder (27) extends from an end of the housing (21) close to the parallel oil cylinder (27) into the housing (21), and an end of the piston rod of the parallel oil cylinder (27) is mechanically connected to an end of the push rod (22) away from the inclined wedge block (23).

2. The front strut lower bracket special cutting tool according to claim 1, characterized in that: The guide alignment block (3) is a rectangular block, connected and fixed above the first support seat (5) and the parallel oil cylinder (27); the end position of the guide alignment block (3) corresponds to the position of the support column (24).

3. The front strut lower bracket special cutting tool according to claim 1, characterized in that: Each set of the clamping device (4) comprises a rotating oil cylinder (41) and a clamping claw (42), wherein the clamping claw (42) is mechanically connected to the piston rod of the rotating oil cylinder (41); second support seats (6) are respectively arranged on both sides of the first support seat (5), and the second support seats (6) are connected and fixed above the bottom plate (1); and the rotating oil cylinder (41) is respectively connected and fixed to the second support seats (6).

4. The front strut lower bracket special cutting tool according to claim 1, characterized in that: It also comprises a plunger assembly (7); the plunger assembly (7) comprises a plunger head (71) and a plunger rod (72); the plunger head (71) is a stepped shaft structure with a small top and a large bottom, and a through hole (711) is provided in the middle of the plunger head (71); the diameter of the plunger rod (72) matches the through hole (711), and the plunger rod (72) is inserted into the through hole (711); the bottom plate (1) is provided with a positioning hole (11), and the diameter of the positioning hole (11) matches the diameter of the large end of the plunger head (71); the plunger head (71) is stuck in the positioning hole (11).

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