A machining tool clamp for a steering knuckle

Abstract

The utility model relates to the technical field of fixture, especially disclose a knuckle machining frock fixture, including frock bottom plate, inside support mechanism, positioning mechanism and limiting mechanism, inside support mechanism includes centre pivot, jacking cylinder and jacking head, centre pivot is evenly provided with a plurality of inside support clamping blocks along the circumference, jacking head connects in the protruding end of jacking cylinder, positioning mechanism includes locating seat and positioning pin, positioning pin sets up in locating seat, and the second spring is arranged between positioning pin and locating seat, limiting mechanism includes limiting seat and limiting clamping block, and the top of limiting seat is provided with the sliding slot, and two limiting clamping blocks are symmetrically set up in the sliding slot. The utility model realizes the prepositioning of knuckle through the knuckle sleeving on the centre pivot, the limiting clamping of limiting mechanism, realizes the accurate positioning of knuckle through the centring adjustment of inside support mechanism to knuckle, the cooperation of positioning mechanism and knuckle pin hole, guarantees the accurate positioning and the stable support of knuckle positioning, guarantees the machining accuracy and quality.

Description

TECHNICAL FIELD

[0001] The utility model relates to fixture technical field especially relates to a knuckle machining frock clamp. BACKGROUND

[0002] The knuckle is one of main parts on the automobile steering axle, can make the automobile steady travel and sensitive transmission travel direction, the function of knuckle is to bear the load of the front part of the automobile, supports and drives the front wheel to rotate around the main pin and makes the automobile turn, is the safety part on the automobile, and the quality directly influences the safety of the whole vehicle, the knuckle is mostly cast, needs to carry out machining after casting production forming, because of the importance of knuckle, the product quality in the machining process is required higher, needs to adopt frock clamp to support and position the knuckle, the frock clamp of the present manufacturer adopts the way of pressing plate or clamping plate to cooperate with the clamping of bolt nut, but because of the irregularity of the overall structure of the knuckle, the positioning accuracy of the prior art frock clamp is low, the stability is poor, influences the machining quality and machining accuracy, and the operation mode of the existing frock clamp is complex, time -consuming and labor -intensive, the processing efficiency is low, is not conducive to promotion and popularization. Figure 8

[0003] Therefore, it is necessary to provide an improved knuckle machining frock clamp to overcome the shortcomings of the prior art. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at solving the prior art problem, provides a knuckle machining frock clamp.

[0005] The technical scheme of the utility model is:

[0006] A knuckle machining frock clamp, including frock bottom plate, inner bracing mechanism, positioning mechanism and limiting mechanism, inner bracing mechanism, positioning mechanism and limiting mechanism are all set up on frock bottom plate, inner bracing mechanism includes center shaft, jacking cylinder and jacking head, the center shaft is evenly provided with a plurality of inner bracing clamping blocks along the circumference, the inner bracing clamping block is slidably connected with the side wall of the center shaft, the first inclined surface is arranged at the end of the inner bracing clamping block, the jacking head is connected to the extension end of the jacking cylinder, the jacking head end is set as the taper structure that abuts with the first inclined surface, the first spring is arranged between the inner bracing clamping block and the inner side wall of the center shaft, the positioning mechanism includes positioning seat and positioning pin, the positioning pin is slidably arranged in the positioning seat, the second spring is arranged between the positioning pin and the positioning seat, the limiting mechanism includes limiting seat and limiting clamping block, the limiting seat top is provided with a sliding slot, two limiting clamping blocks are symmetrically and slidably arranged in the sliding slot, and the tension spring is arranged between the two limiting clamping blocks.

[0007] Preferably, the second inclined surface is arranged at the top of the opposite side surface of the two limiting clamping blocks.

[0008] Preferably, the top surface of the center shaft is provided with a detachable cover plate.​

[0009] Preferably, the knuckle machining tool clamp further comprises a first supporting mechanism, the first supporting mechanism comprises a supporting base and a supporting rod, the supporting rod is threadedly connected to the supporting base, and a locking nut is arranged on the supporting rod.

[0010] Preferably, the knuckle machining tool clamp further comprises a pressing mechanism, the pressing mechanism comprises a pressing cylinder, a pressing arm and a pressing block, one end of the pressing arm is connected to an extending end of the pressing cylinder, and the pressing block is connected to the other end of the pressing arm.

[0011] Preferably, the knuckle machining tool clamp further comprises a second supporting mechanism, the second supporting mechanism comprises a supporting bottom plate, a supporting frame, two supporting shafts and a supporting top plate, the supporting frame is arranged on the supporting bottom plate, the two supporting shafts are both penetratingly and slidingly connected to the supporting frame, the supporting top plate is connected to the two supporting shafts, and a third spring is sleeved on each supporting shaft.

[0012] Preferably, the supporting top plate is provided with a first connecting seat and a second connecting seat, the second connecting seat is provided with a long slot hole, one of the two supporting shafts is hinged to the first connecting seat, the other supporting shaft is connected to the second connecting seat and slides along the long slot hole.

[0013] Preferably, the supporting bottom plate is provided with a mounting hole and an arc-shaped slot hole, and the arc-shaped slot hole and the mounting hole have the same center.

[0014] Compared with the prior art, the knuckle machining tool clamp has the following beneficial effects:

[0015] The positioning hole of the knuckle is sleeved on the central shaft, the knuckle arm is clamped and limited by the limiting mechanism, the second supporting mechanism is adapted to the shape of the knuckle, the knuckle is pre-positioned, the knuckle is adjusted and centered by the inner supporting mechanism mounted on the central shaft, the positioning mechanism is matched with the pin hole of the knuckle, the knuckle is accurately positioned, the positioning surface of the knuckle is stably supported by the first supporting mechanism, and the knuckle is pressed by the pressing mechanism, so that the knuckle is stably clamped, the machining precision and machining quality are guaranteed, the overall structure is simple, the operation is convenient and fast, and the efficiency of knuckle machining is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0017] Figure 2 It is a front view structure schematic view of the utility model;

[0018] Figure 3 It is an inner supporting mechanism structure schematic view of the utility model;

[0019] Figure 4 It is a limiting mechanism structure schematic view of the utility model;

[0020] Figure 5 It is the schematic structural diagram of the positioning mechanism mechanism of the utility model;

[0021] Figure 6 It is the schematic structural diagram of the second support mechanism mechanism of the utility model;

[0022] Figure 7 It is the schematic structural diagram of the utility model use state structure;

[0023] Figure 8 It is the schematic diagram of knuckle structure.

[0024] Wherein, 1, tooling bottom plate;2, center shaft;3, jacking cylinder;4, jacking head;5, inner support clamping block;6, first inclined plane;7, first spring;8, cover plate;9, positioning seat;10, positioning pin;11, second spring;12, limit seat;13, limit clamping block;14, sliding slot;15, tension spring;16, second inclined plane;17, support seat;18, support rod;19, locking nut;20, compression cylinder;21, compression arm;22, compression block;23, support bottom plate;24, support frame;25, support shaft;26, support top plate;27, third spring;28, first connecting seat;29, second connecting seat;30, long slot;31, mounting hole;32, arc slot;33, steering knuckle. DETAILED DESCRIPTION

[0025] In order to make the technical means, technical features, utility model purposes and technical effects realized by the utility model easy to understand, the utility model is further described below in combination with specific drawings.

[0026] As Figures 1-7 Indicated, a kind of steering knuckle machining tooling fixture, including tooling bottom plate 1, inner support mechanism, positioning mechanism, limit mechanism, first support mechanism, second support mechanism and compression mechanism, inner support mechanism, positioning mechanism, limit mechanism, first support mechanism, second support mechanism and compression mechanism are installed on tooling bottom plate 1, can realize the accurate positioning to steering knuckle 33, and realize the compression to steering knuckle 33, guarantee the accurate positioning and clamping stability of steering knuckle 33, improve the precision, quality and processing efficiency of machining.

[0027] As Figures 1-3As shown, the inner support mechanism includes a center shaft 2, a jacking cylinder 3 and a jacking head 4, the center shaft 2 and the jacking cylinder 3 are both installed on the tooling base plate 1, the center shaft 2 is located on the upper surface of the tooling base plate 1, the jacking cylinder 3 is located on the lower surface of the tooling base plate 1, the center shaft 2 adopts an internal hollow structure, the outer diameter size of the center shaft 2 is smaller than the inner diameter size of the positioning hole of the knuckle 33, there are multiple inner support clamping blocks 5 on the circumferential side wall of the center shaft 2 along the circumference and evenly, the inner support clamping block 5 and the side wall of the center shaft 2 are slidingly connected, the end of the inner support clamping block 5 towards the axis of the center shaft 2 is processed with a first inclined surface 6, the jacking head 4 is installed inside the center shaft 2, the axis of the jacking head 4 coincides with the axis of the center shaft 2, the jacking head 4 is connected to the extension end of the jacking cylinder 3, the jacking head 4 is driven by the jacking cylinder 3 to move up and down, the end of the jacking head 4 is processed into a conical structure, the conical structure of the jacking head 4 slidingly abuts against the first inclined surface 6, the first spring 7 is connected between the inner support clamping block 5 and the inner side wall of the center shaft 2, that is, one end of the first spring 7 abuts against the inner support clamping block 5, the other end of the first spring 7 abuts against the inner side wall of the center shaft 2, in the initial state, the jacking cylinder 3 is retracted, the inner support clamping block 5 is retracted into the inside of the center shaft 2 under the action of the first spring 7, so that the end of the inner support clamping block 5 away from the axis of the center shaft 2 does not exceed the outer side wall of the center shaft 2, when the jacking cylinder 3 is extended, the jacking head 4 is moved, because the conical structure of the jacking head 4 slidingly contacts the first inclined surface 6, the inner support clamping block 5 is pushed to move away from the axis of the center shaft 2 against the force of the first spring 7, and extends to the outside of the center shaft 2 to support and position the positioning hole of the knuckle 33;

[0028] Because the jacking head 4, the inner support clamping block 5 and the like are all installed in the hollow inside of the center shaft 2, in order to avoid the cutting chips generated by machining from falling into the inside of the center shaft 2 and causing wear or obstruction, a cover plate 8 is installed on the top surface of the center shaft 2, the cover plate 8 can be connected by pins or bolts and the like to achieve detachable connection with the center shaft 2.

[0029] As shown in Figure 1 , Figure 2 and Figure 5 , the positioning mechanism includes a positioning seat 9 and a positioning pin 10, the positioning seat 9 is installed on the tooling base plate 1, the positioning pin 10 is installed in the positioning seat 9, the second spring 11 is connected between the positioning pin 10 and the positioning seat 9, one end of the second spring 11 abuts against the positioning pin 10, the other end of the second spring 11 is connected with the positioning seat 9, the positioning pin 10 extends upward to the outside of the positioning seat 9 under the action of the second spring 11, when the positioning pin 10 is subjected to external force, it can retract into the positioning seat 9 against the force of the second spring 11, when the external force disappears, the positioning pin 10 extends out again under the action of the second spring 11.

[0030] As shown in Figure 1 , Figure 2 and Figure 4As shown, the limiting mechanism includes a limiting seat 12 and a limiting clamp block 13, the limiting seat 12 is installed on the tool base plate 1, a sliding groove 14 is processed on the top of the limiting seat 12, the sliding groove 14 can be processed into a dovetail type or a T type, the number of the limiting clamp block 13 is two, the two limiting clamp blocks 13 are symmetrically connected in the sliding groove 14 and can slide in the sliding groove 14, a tension spring 15 is connected between the two limiting clamp blocks 13, the two limiting clamp blocks 13 are relatively close under the action of the tension spring 15, a second inclined surface 16 is processed on the top of the opposite side surface of the two limiting clamp blocks 13, which facilitates the placement of the knuckle arm of the knuckle 33 between the two limiting clamp blocks 13.

[0031] As shown in Figure 1 and Figure 2 , the first supporting mechanism includes a supporting seat 17 and a supporting rod 18, the supporting seat 17 is installed on the tool base plate 1, the supporting rod 18 is threadedly connected to the supporting seat 17, by screwing the supporting rod 18, the height of the supporting rod 18 installed on the supporting seat 17 is adjusted, so that the top surface of the supporting rod 18 is supported on the corresponding positioning plane of the knuckle 33, thereby enhancing the stability of the support on the knuckle 33, a locking nut 19 is threadedly connected to the supporting rod 18, after the supporting rod 18 is adjusted in place, the position of the supporting rod 18 relative to the supporting seat 17 is fixed by the locking nut 19, the supporting rod 18, the supporting seat 17 and the locking nut 19 all adopt fine thread, the adjustment accuracy is high, and fine adjustment can be realized.

[0032] As shown in Figure 1 , Figure 2 and Figure 6 , the second supporting mechanism includes a supporting bottom plate 23, a supporting frame 24, a supporting shaft 25 and a supporting top plate 26, the supporting bottom plate 23 is installed on the tool base plate 1, mounting holes 31 and arc-shaped slot holes 32 are processed on the supporting bottom plate 23, the arc-shaped slot holes 32 are distributed with the mounting holes 31 as the center, the installation angle of the supporting bottom plate 23 relative to the horizontal plane of the tool base plate 1 can be adjusted around the center of the mounting holes 31, so as to adjust the position of the second supporting mechanism corresponding to the knuckle arm of the knuckle 33, the supporting frame 24 is installed on the supporting bottom plate 23, the number of the supporting shaft 25 is two, the two supporting shafts 25 are both penetratingly and slidingly connected to the supporting frame 24, a third spring 27 is sleeved on the supporting shaft 25, the third spring 27 is abutted between the supporting shaft 25 and the supporting frame 24, the supporting top plate 26 is connected with the two supporting shafts 25, specifically, a first connecting seat 28 and a second connecting seat 29 are processed on the supporting top plate 26, a long slot hole 30 is processed on the second connecting seat 29, one of the supporting shafts 25 is hinged to the first connecting seat 28, the other supporting shaft 25 is connected to the second connecting seat 29 and slides along the long slot hole 30, when supporting, the installation angle of the supporting top plate 26 is adjusted through the hinging and sliding connection of the supporting shaft 25 and the supporting top plate 26, and through the compression of the third spring 27, so that the supporting top plate 26 can reliably support the shape of the knuckle arm of the knuckle 33.

[0033] like Figure 1 and Figure 2 As shown, the clamping mechanism includes a clamping cylinder 20, a clamping arm 21, and a clamping block 22. The fixed end of the clamping cylinder 20 is connected to the tooling base plate 1. One end of the clamping arm 21 is connected to the extended end of the clamping cylinder 20, and the clamping block 22 is connected to the other end of the clamping arm 21. The clamping cylinder 20 is a rotary clamping cylinder. When clamping, the clamping cylinder 20 drives the clamping block 22 to clamp onto the positioned steering knuckle 33 through the clamping arm 21, preventing positional movement during machining and ensuring machining quality. When not clamping, the clamping cylinder 20 drives the clamping arm 21 and the clamping block 22 to rotate to one side, so as not to interfere with the loading and unloading of the steering knuckle 33.

[0034] The working principle of this utility model is as follows:

[0035] like Figure 7 As shown, during use, the steering knuckle 33 is placed on the tooling base plate 1. The positioning hole on the steering knuckle 33 fits onto the outside of the central shaft 2. One of the segments of the steering knuckle 33 overcomes the tension of the tension spring 15 and is engaged between two limiting clamps 13. Under the action of the tension spring 15, the two limiting clamps 13 provide coarse positioning for the segment of the steering knuckle 33. The other segment of the steering knuckle 33 is supported on the support top plate 26, and the compression of the third spring 27 causes the support top plate 26 to change its own angle to match the shape of the segment. The shape of the steering knuckle 33 segment provides auxiliary support for the steering knuckle 33, preventing the steering knuckle 33 from tilting due to unevenness. (Lifting cylinder...) 3. The lifting head 4 extends and rises. The conical structure of the lifting head 4 slides relative to the first inclined surface 6, pushing the inner support clamp 5 to extend away from the axis of the central shaft 2. It supports the positioning hole of the steering knuckle 33 and adjusts the position of the steering knuckle 33 for centering. The positioning pin 10 is inserted into the corresponding pin hole of the steering knuckle 33 under the action of the second spring 11, realizing the accurate positioning of the steering knuckle 33. The support rod 18 is supported on the corresponding positioning plane. The clamping cylinder 20 is activated. The clamping cylinder 20 drives the clamping block 22 through the clamping arm 21 to clamp the steering knuckle 33. The positioning accuracy is high, the support stability is good, and the processing accuracy and processing quality are guaranteed.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. All equivalent changes and modifications made in accordance with the scope of the claims of this utility model should fall within the technical scope of this utility model.

Claims

1. A knuckle machining fixture clamp characterized by: The utility model provides a centering device for the workpiece, which comprises a tooling base plate (1), an inner supporting mechanism, a positioning mechanism and a limiting mechanism, the inner supporting mechanism, the positioning mechanism and the limiting mechanism are all arranged on the tooling base plate (1), the inner supporting mechanism comprises a central shaft (2), a jacking cylinder (3) and a jacking head (4), the central shaft (2) is uniformly provided with a plurality of inner supporting clamping blocks (5) along the circumference, the inner supporting clamping block (5) is slidably connected with the side wall of the central shaft (2), the end of the inner supporting clamping block (5) is provided with a first inclined surface (6), the jacking head (4) is connected with the extension end of the jacking cylinder (3), the end of the jacking head (4) is provided with a taper structure abutting against the first inclined surface (6), the first spring (7) is arranged between the inner supporting clamping block (5) and the inner side wall of the central shaft (2), the positioning mechanism comprises a positioning seat (9) and a positioning pin (10), the positioning pin (10) is slidably arranged in the positioning seat (9), the second spring (11) is arranged between the positioning pin (10) and the positioning seat (9), the limiting mechanism comprises a limiting seat (12) and a limiting clamping block (13), the top of the limiting seat (12) is provided with a sliding groove (14), the two limiting clamping blocks (13) are symmetrically and slidably arranged in the sliding groove (14), and the pull spring (15) is arranged between the two limiting clamping blocks (13).

2. The knuckle machining fixture of claim 1, wherein: The top of the opposite side surface of the two limiting clamping blocks (13) is provided with a second inclined surface (16).

3. The knuckle machining fixture of claim 1, wherein: The top of the opposite side surface of the two limiting clamping blocks (13) is provided with a second inclined surface (16).

4. The knuckle machining fixture of claim 1, wherein: The top of the opposite side surface of the two limiting clamping blocks (13) is provided with a second inclined surface (16).

5. The knuckle machining fixture of claim 1, wherein: The top of the opposite side surface of the two limiting clamping blocks (13) is provided with a second inclined surface (16).

6. The knuckle machining fixture of claim 1, wherein: The top of the opposite side surface of the two limiting clamping blocks (13) is provided with a second inclined surface (16).

7. The knuckle machining fixture of claim 6, wherein: The top of the opposite side surface of the two limiting clamping blocks (13) is provided with a second inclined surface (16).

8. The knuckle machining fixture of claim 6, wherein: The top of the opposite side surface of the two limiting clamping blocks (13) is provided with a second inclined surface (16). The top of the opposite side surface of the two limiting clamping blocks (13) is provided with a second inclined surface (16). The top of the opposite side surface of the two limiting clamping blocks (13) is provided with a second inclined surface (16). The top of the opposite side surface of the two limiting clamping blocks (13) is provided with a second inclined surface (16). The top of the opposite side surface of the two limiting clamping blocks (13) is provided with a second inclined surface (16). The top of the opposite side surface of the two limiting clamping blocks (13) is provided with a second inclined surface (16). The top of the opposite side surface of the two limiting clamping blocks (13) is provided with a second inclined surface (16). 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