CN113211144A - Drilling fixture for main pin hole of steering knuckle with arm - Google Patents
Drilling fixture for main pin hole of steering knuckle with arm Download PDFInfo
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- CN113211144A CN113211144A CN202110491177.6A CN202110491177A CN113211144A CN 113211144 A CN113211144 A CN 113211144A CN 202110491177 A CN202110491177 A CN 202110491177A CN 113211144 A CN113211144 A CN 113211144A
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- knuckle
- positioning
- arm
- steering knuckle
- pressing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
- B23Q3/082—Work-clamping means other than mechanically-actuated hydraulically actuated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention relates to the technical field of processing of steering knuckles with arms, and discloses a drilling fixture for main pin holes of steering knuckles with arms, which comprises a base and a positioning device arranged on the base, wherein a positioning body and a pressing device are arranged on the positioning body, a positioning surface for positioning the steering knuckle disk part is arranged on the positioning body, a positioning hole for positioning a steering knuckle shaft neck is arranged on the positioning surface, an included angle between the positioning surface and a horizontal plane is equal to an included angle between the steering knuckle disk part and the axis of the main pin hole of the steering knuckle, a steering knuckle arm positioning part for positioning the steering knuckle arm is also arranged on one side of the positioning body, when the drilling fixture is used for positioning, the steering knuckle shaft neck is inserted into the positioning hole until the steering knuckle disk part is contacted with the positioning surface, then the steering knuckle arm is positioned by using the steering knuckle arm positioning part, and finally the steering knuckle is fixed on the positioning body by the pressing device, so that the drilling fixture has good stability, the positioning accuracy is high, the clamping process is simple, the production efficiency is high, and the drilling accuracy is high.
Description
Technical Field
The invention relates to the technical field of machining of steering knuckles with arms, in particular to a drilling clamp for a main pin hole of a steering knuckle with an arm.
Background
The steering knuckle arm is also called a trapezoidal arm and is the last-stage force transmission component of a steering transmission device, the existing steering knuckle arm is generally connected to a left steering knuckle and a right steering knuckle through bolts, and the other end of the existing steering knuckle arm is connected with a tie rod through a ball pin. The knuckle is a component for finally realizing steering, but how to connect the fan-shaped motion generated by the steering gear rocker arm to the left knuckle, so that a knuckle arm is additionally arranged on the left knuckle and is connected with the steering gear rocker arm through a steering longitudinal pull rod, and the steering function is realized.
With the continuous promotion of national energy-saving and emission-reducing standards, the light weight becomes the main direction of new development of the automobile industry, and the main approaches are material light weight and structure light weight. The steering knuckle with the arm is a steering knuckle based on the lightweight concept and integral structural design and replaces a split type structure connected by a traditional bolt. The knuckle and the knuckle arm are integrally forged, and the weight of an assembly part can be reduced by about 4 kilograms. However, the steering knuckle itself belongs to a branch-type high-difficulty complex forging, and the steering knuckle arms integrally formed on the steering knuckle increase the complexity of the whole structure, the axial directions of the main pin holes distributed on the upper lug and the lower lug and the shaft neck form irregular angles, and the coaxiality requirements of the main pin holes on the upper lug and the lower lug are high, so that how to clamp and position the main pin holes in the machining process of the main pin holes of the steering knuckle with the arms to ensure the machining precision of the main pin holes is always an urgent problem to be solved in the industry.
Disclosure of Invention
The invention aims to provide a drilling fixture for a main pin hole of a steering knuckle with an arm, which has the advantages of good stability, high positioning accuracy, simple clamping process, high production efficiency and high drilling accuracy.
The technical purpose of the invention is realized by the following technical scheme:
take arm knuckle king pin hole boring grab, including base and the positioner of setting on the base, positioner is including the location body and closing device, be equipped with the locating surface that is used for advancing line location to the knuckle dish portion on the location body, be equipped with the locating hole that is used for advancing line location to the knuckle axle journal on the locating surface, contained angle between locating surface and the horizontal plane equals with the contained angle between knuckle dish portion and the knuckle king pin hole axis, one side of the location body still is equipped with the knuckle arm location portion that is used for advancing line location to the knuckle arm.
By adopting the technical scheme, the steering knuckle axle journal is inserted into the positioning hole during positioning until the steering knuckle disk part is contacted with the positioning surface, the steering knuckle arm is positioned by utilizing the steering knuckle arm positioning part, finally the steering knuckle is fixed on the positioning body through the pressing device, the pressing device and the positioning body simultaneously limit the freedom degree of the steering knuckle with the arm in the vertical and horizontal directions, the steering knuckle arm positioning part limits the freedom degree of the steering knuckle with the arm in the rotation along the axis direction of the steering knuckle axle journal, so that the steering knuckle with the arm is more firmly limited in the main pin hole drilling process, the drilling hole is higher, the deviation caused by the rotation of the steering knuckle during processing is avoided, the production quality is improved, meanwhile, the problem that the steering knuckle with the arm is complicated in structure and not easy to clamp and position is solved and the complicated structure is fully utilized through the mutual matching of the positioning body, the pressing device and the steering knuckle arm positioning part, the positioning device has the advantages that the positioning device can quickly and accurately position the steering knuckle with the arm, the positioning precision is high, the clamping process is simple, the production efficiency is high, the drilling precision is high, meanwhile, the included angle between the positioning surface and the horizontal plane on the positioning body is equal to the included angle between the steering knuckle disc part and the axis of the main pin hole of the steering knuckle, so that the axis of the main pin hole of the steering knuckle is parallel to the horizontal plane, the main pin hole can be coaxial with the direction of a machine tool spindle during drilling of the main pin hole, and the machining precision of the main pin hole is further guaranteed.
The invention is further provided with: and a positioning sleeve is arranged in the positioning hole, the outer wall of the positioning sleeve is tightly matched with the inner wall of the positioning hole, and the positioning sleeve is coaxial with the positioning hole.
Through adopting above-mentioned technical scheme, the knuckle journal passes through the position sleeve and the coaxial cooperation of locating hole, and the position sleeve simple structure makes easily, and the change of being convenient for can effectively prevent knuckle journal and locating hole direct contact and cause the wearing and tearing of locating hole in mass production to lead to positioning accuracy to descend, consequently, set up the life that the position sleeve can effectively improve whole anchor clamps in the locating hole, reduce the maintenance cost of anchor clamps.
The invention is further provided with: the compressing device comprises a pressing arm, a supporting arm and a compressing oil cylinder, one end of the pressing arm is rotatably connected with a telescopic shaft of the compressing oil cylinder, the other end of the pressing arm extends towards the direction of the lug part of the steering knuckle, the supporting arm is located between the compressing oil cylinder and the lug part of the steering knuckle, the lower end of the supporting arm is fixed on the base, the upper end of the supporting arm is rotatably connected with the pressing arm, the compressing oil cylinder is fixed on the base, the compressing oil cylinder is connected with one end of the pressing arm, and the other end of the pressing arm is located above the lug part of the steering knuckle.
Through adopting above-mentioned technical scheme, the one end up-and-down motion of pressure cylinder drive pressure arm makes the pressure arm rotate around its point of being connected with the support arm to drive the one end up-and-down motion that the pressure arm is located knuckle ear top and realize the clamp of knuckle ear or loosen, simultaneously, the stroke size through control pressure cylinder can effectively control the distance that the pressure arm is located the one end up-and-down motion of knuckle ear top, can satisfy the compressing tightly of the different products of knuckle ear size, thereby the commonality of anchor clamps has been improved.
The invention is further provided with: the steering knuckle arm positioning portion comprises a fixed positioning seat and a movable positioning seat, the fixed positioning seat and the movable positioning seat are respectively fixed on two sides of the steering knuckle arm, positioning bolts and compression bolts are respectively arranged on the fixed positioning seat and the movable positioning seat, the positioning bolts and the compression bolts are respectively detachably connected with the fixed positioning seat and the movable positioning seat, and one ends, opposite to the positioning bolts and the compression bolts, of the positioning bolts are respectively opposite to two sides of the steering knuckle arm.
Through adopting above-mentioned technical scheme, utilize the special construction of band arm knuckle self, arrange the knuckle arm in between fixed positioning seat and the activity positioning seat during the location, one side of knuckle arm is passed through positioning bolt location, then compresses tightly through clamp bolt, makes the quick clamping location of knuckle, and positioning accuracy is higher to in the king pin hole drilling course of working, whole band arm knuckle can not take place the rotation, and drilling machining precision is higher.
The invention is further provided with: the one end that the pressure arm extends to knuckle ear's direction is equipped with the pressure head, the bottom both ends of pressure head are relative with the last ear and the lower ear of knuckle ear respectively.
Through adopting above-mentioned technical scheme, the pressure arm is pushed down the knuckle ear through the pressure head, the pressure head both ends respectively with last ear and lower ear contact, owing to have certain interval between the last ear of taking the arm knuckle and the lower ear, compress tightly last ear and lower ear through the pressure head, compress tightly the effect better and only need a pressure arm just can realize, more accord with lightweight design requirement, the cost is also lower.
The invention is further provided with: the top of pressure head still is equipped with supplementary briquetting, supplementary briquetting and pressure arm fixed connection, supplementary briquetting and pressure arm are located the position in middle part between upper ear and the lower ear with the region of pressure head contact.
Through adopting above-mentioned technical scheme, the region that makes supplementary briquetting and pressure arm and pressure head contact is located the position at middle part between upper ear and the lower ear, can guarantee that the pressure head stress point is in the centre of pressure head and upper ear and lower ear contact point as far as possible, and upper ear just can be even with lower ear atress when compressing tightly like this to effectively avoid upper ear and lower ear to cause the unstable problem of area arm knuckle clamping because of the atress is uneven, further improved the processingquality of knuckle king pin hole. The invention is further provided with: the base is provided with a hole opposite to the positioning hole, and the depth of the hole is larger than the length of the steering knuckle shaft neck extending out of the positioning body.
Through adopting above-mentioned technical scheme, the knuckle axle journal inserts in the locating hole to the knuckle dish portion and the locating surface contact back, the knuckle axle journal gets into on the base from the part that the locating hole stretches out in the hole relative with the locating hole position, the degree of depth of locating hole just need not be too dark like this, consequently, the thickness of the location body just can reduce greatly, thereby make anchor clamps lighter, and realize the location to the knuckle axle journal homoenergetic of size difference, and simultaneously, because the aperture on the base is great, the knuckle axle journal can the horizontal hunting when the clamping be adjusted, thereby make the knuckle ear and the better contact of closing device, and then improve and compress tightly the effect.
The invention has the beneficial effects that:
1. the invention has good stability, high positioning precision, simple clamping process, high production efficiency and good product quality when clamping and positioning the steering knuckle with the arm, the shaft neck of the steering knuckle is inserted into the positioning hole when positioning until the shaft neck of the steering knuckle is contacted with the positioning surface, the steering knuckle arm is positioned by utilizing the positioning part of the steering knuckle, finally the steering knuckle is fixed on the positioning body by the pressing device, the pressing device and the positioning body simultaneously limit the freedom degree of the steering knuckle with the arm in the vertical and horizontal directions, the positioning part of the steering knuckle limits the freedom degree of the steering knuckle with the arm rotating along the axial direction of the shaft neck of the steering knuckle, so that the steering knuckle with the arm is more firmly limited in the drilling process of the main pin hole, the drilling precision is higher, the deviation caused by the rotation of the steering knuckle during processing is avoided, the production quality is improved, and simultaneously, the positioning body, the pressing device and the positioning part of the steering knuckle are mutually matched, the problem of the complicated not good clamping location of band arm knuckle structure is overcome and make full use of this kind of complicated structure, realized taking the arm knuckle quick, accurate location, and positioning accuracy is high, the clamping process is simple, high in production efficiency, drilling accuracy is high, and simultaneously, the contained angle between locating surface and the horizontal plane equals with the contained angle between knuckle dish portion and the knuckle king pin hole axis on the locating body and makes knuckle dish portion and locating surface contact back, knuckle king pin hole axis is parallel with the horizontal plane, guarantee that king pin hole drilling adds man-hour, the king pin hole can be coaxial with the lathe main shaft direction, the machining precision of king pin hole has further been guaranteed.
2. According to the invention, the positioning sleeve is arranged in the positioning hole of the positioning body, so that the steering knuckle shaft neck is coaxially matched with the positioning hole through the positioning sleeve, the positioning sleeve is simple in structure, easy to manufacture and convenient to replace, and the problem of positioning accuracy reduction caused by abrasion of the positioning hole due to direct contact of the steering knuckle shaft neck and the positioning hole can be effectively prevented in mass production, therefore, the service life of the whole clamp can be effectively prolonged by arranging the positioning sleeve in the positioning hole, and the maintenance cost of the clamp is reduced.
3. According to the clamping device, the pressing cylinder drives one end of the pressing arm to move up and down, so that the pressing arm rotates around the point of the pressing arm connected with the supporting arm, the end, located above the knuckle lug, of the pressing arm is driven to move up and down to clamp or loosen the knuckle lug, meanwhile, the distance of the up-and-down movement of the end, located above the knuckle lug, of the pressing arm can be effectively controlled by controlling the stroke of the pressing cylinder, the clamping of products with different sizes of the knuckle lug can be met, and the universality of the clamp is improved.
4. According to the invention, by utilizing the special structure of the steering knuckle with the arm, the steering knuckle arm is arranged between the fixed positioning seat and the movable positioning seat during positioning, one side of the steering knuckle arm is positioned by the positioning bolt and then is pressed by the pressing bolt, so that the steering knuckle is quickly clamped and positioned, the positioning precision is higher, the whole steering knuckle with the arm cannot rotate in the drilling process of the main pin hole, and the drilling processing precision is higher.
5. According to the invention, the steering knuckle ear part is pressed by the pressing arm through the pressing head, two ends of the pressing head are respectively contacted with the upper ear and the lower ear, and the upper ear and the lower ear of the steering knuckle with the arm are pressed tightly by the pressing head due to a certain distance, so that the pressing effect is better, the upper ear and the lower ear can be pressed tightly by only one pressing arm, the light-weight design requirement is met, and the cost is lower.
6. According to the invention, after the steering knuckle axle journal is inserted into the positioning hole until the steering knuckle disc part is contacted with the positioning surface, the part of the steering knuckle axle journal extending out of the positioning hole enters the hole on the base, which is opposite to the positioning hole, so that the depth of the positioning hole does not need to be too deep, the thickness of the positioning body can be greatly reduced, the whole clamp is lighter while the cost is reduced, and the positioning can be realized for the steering knuckle axle journals with different sizes.
7. According to the invention, the auxiliary pressing block is arranged at the top of the pressing head, so that the contact area of the auxiliary pressing block and the pressing arm with the pressing head is positioned at the middle position between the upper lug and the lower lug, the force applied by the pressing arm to the pressing head is transferred to the middle position of the pressing head through the auxiliary pressing block, and the upper lug and the lower lug can be uniformly stressed when being pressed by the pressing head, so that the problem of unstable clamping of the steering knuckle with the arm due to uneven stress of the upper lug and the lower lug is effectively avoided, and the processing quality of the main pin hole of the steering knuckle is further improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic perspective view of the drilling jig for the king pin hole of the steering knuckle with the arm, which is used for clamping and positioning.
Fig. 2 is a front view of fig. 1.
FIG. 3 is a schematic view of a connecting structure of a pressing arm, a pressing head and an auxiliary pressing block in the pressing device of the drilling clamp for the main pin hole of the steering knuckle with the arm.
FIG. 4 is a schematic cross-sectional view of the connection between the positioning device and the base in the drilling jig for the king pin hole of the knuckle with the arm according to the present invention.
FIG. 5 is a schematic sectional structure view of the drilling jig for the king pin hole of the knuckle with arm according to the present invention.
FIG. 6 is a top view of the armed knuckle being clamped and positioned by the drilling fixture for the king pin hole of the armed knuckle of the present invention.
FIG. 7 is a front view of the steering knuckle with arm, which is clamped and positioned by the drilling fixture for the main pin hole of the steering knuckle with arm
In the figure, 1, a base; 11. an aperture; 2. a positioning device; 21. a positioning body; 211. positioning the surface; 212. positioning holes; 213. a positioning sleeve; 22. a pressing device; 221. pressing the arm; 222. a support arm; 223. a pressing oil cylinder; 224. a pressure head; 225. auxiliary briquetting; 23. a knuckle arm positioning portion; 231. fixing the positioning seat; 232. a movable positioning seat; 233. positioning the bolt; 234. a hold-down bolt; 3. a knuckle journal; 4. a knuckle disc portion; 5. a knuckle arm; 6. a knuckle king pin bore axis; 7. a knuckle ear; 71. an upper ear; 72. and (4) the lower ear.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
Referring to fig. 1 to 7, the drilling jig for the main pin hole of the knuckle with the arm comprises a base 1 and a positioning device 2 arranged on the base 1, wherein the positioning device 2 comprises a positioning body 21 and a pressing device 22, the positioning body 21 is provided with a positioning surface 211 used for positioning the knuckle disc part 4, the positioning surface 211 is provided with a positioning hole 212 used for positioning the knuckle journal 3, an included angle between the positioning surface 211 and the horizontal plane is equal to an included angle between the knuckle disc part 4 and the axis 6 of the main pin hole of the knuckle, one side of the positioning body 21 is further provided with a knuckle arm positioning part 23 used for positioning the knuckle arm 5, the knuckle journal 3 is inserted into the positioning hole 212 during positioning until the knuckle disc part 4 contacts with the positioning surface 211, the knuckle arm positioning part 23 is used for positioning the knuckle arm 5, and finally the knuckle is fixed on the positioning body 21 through the pressing device 22, the pressing device 22 and the positioning body 21 limit the freedom of the steering knuckle with the arm in the vertical and horizontal directions simultaneously, the steering knuckle arm positioning part 23 limits the freedom of the steering knuckle with the arm in the rotation along the axis direction of the steering knuckle shaft neck 3, so that the steering knuckle with the arm is more firmly limited in the main pin hole drilling process, the drilling precision is higher, the deviation caused by the rotation of the steering knuckle during processing is avoided, the production quality is improved, meanwhile, the positioning body, the pressing device and the steering knuckle arm positioning part are mutually matched, the complex structural characteristics of the steering knuckle with the arm are fully utilized, the positioning and clamping of the steering knuckle with the arm are jointly realized, the included angle between the positioning surface 211 on the positioning body 21 and the horizontal plane is equal to the included angle between the steering knuckle disk part 4 and the steering knuckle main pin hole axis 6, so that the steering knuckle main pin hole axis 6 is parallel to the horizontal plane after the steering knuckle disk part 4 is contacted with the positioning surface 211, when the main pin hole is drilled, the main pin hole can be coaxial with the main shaft of the machine tool, and the machining precision of the main pin hole is further guaranteed.
Furthermore, a positioning sleeve 213 is arranged in the positioning hole 212, the outer wall of the positioning sleeve 213 is tightly matched with the inner wall of the positioning hole 212, the positioning sleeve 213 is coaxial with the positioning hole 212, the knuckle spindle 3 is coaxially matched with the positioning hole 212 through the positioning sleeve 213, the positioning sleeve 213 is simple in structure, easy to manufacture and convenient to replace, and in mass production, the knuckle spindle 3 can be effectively prevented from being directly contacted with the positioning hole 212 to cause abrasion of the positioning hole 212, so that the positioning accuracy is reduced, therefore, the positioning sleeve 213 arranged in the positioning hole 212 can effectively prolong the service life of the whole fixture, and the maintenance cost of the fixture is reduced.
Further, the pressing device 22 includes a pressing arm 221, a supporting arm 222 and a pressing oil cylinder 223, one end of the pressing arm 221 is rotatably connected with a telescopic shaft of the pressing oil cylinder 223, the other end of the pressing arm 221 extends towards the direction of the knuckle ear 7, the supporting arm 222 is located between the pressing oil cylinder 223 and the knuckle ear 7, the lower end of the supporting arm 222 is fixed on the base 1, the upper end of the supporting arm 222 is rotatably connected with the pressing arm 221, the pressing oil cylinder 223 is fixed on the base 1, the pressing oil cylinder 223 is connected with one end of the pressing arm 221, and the other end of the pressing arm 221 is located above the knuckle ear 7. The one end up-and-down motion of pressing arm 221 is driven to the pressure cylinder 223, make the pressure arm 221 rotate around its point of being connected with support arm 222, thereby it realizes the tight clamp of knuckle ear 7 or unclamps to drive the one end up-and-down motion that the pressure arm 221 is located knuckle ear 7 top, and simultaneously, the stroke size through control pressure cylinder 223 can effectively control the distance that the one end up-and-down motion that the pressure arm 221 is located knuckle ear 7 top, can satisfy the compressing tightly of the different products of knuckle ear 7 size, thereby the commonality of anchor clamps has been improved.
Further, the knuckle arm positioning portion 23 includes a fixed positioning seat 231 and a movable positioning seat 232, the fixed positioning seat 231 and the movable positioning seat are respectively fixed on two sides of the knuckle arm 5, the fixed positioning seat 231 and the movable positioning seat 232 are respectively provided with a positioning bolt 233 and a pressing bolt 234, the positioning bolt 233 and the pressing bolt 234 are respectively detachably connected with the fixed positioning seat 231 and the movable positioning seat 232, one end of the positioning bolt 233 opposite to the pressing bolt 234 is respectively opposite to two sides of the knuckle arm 5, the knuckle arm 5 is placed between the fixed positioning seat 231 and the movable positioning seat 232 during positioning by using a special structure of the knuckle arm, one side of the knuckle arm 5 is positioned by the positioning bolt 233 and then pressed by the pressing bolt 234, so that the knuckle is quickly clamped and positioned, the positioning accuracy is higher, and in the main pin hole drilling process, the whole steering knuckle with the arm cannot rotate, and the drilling machining precision is higher.
Furthermore, the pressing arm 221 is provided with a pressing head 224 at one end extending towards the direction of the knuckle ear 7, two ends of the bottom of the pressing head 224 are respectively opposite to the upper ear 71 and the lower ear 72 of the knuckle ear 7, the pressing arm 221 presses the knuckle ear 7 through the pressing head 224, two ends of the pressing head 224 are respectively contacted with the upper ear 71 and the lower ear 72, a certain distance is reserved between the upper ear 71 and the lower ear 72 of the knuckle with the arm, the pressing head 224 presses the upper ear 71 and the lower ear 72, the pressing effect is good, only one pressing arm 221 is needed to achieve, the light design requirement is better met, and the cost is lower.
Furthermore, the top of the pressing head 224 is also provided with an auxiliary pressing block 225, the auxiliary pressing block 225 is fixedly connected with the pressing arm 221, the contact area between the auxiliary pressing block 225 and the pressing arm 221 and the pressing head 224 is located at the position in the middle between the upper lug 71 and the lower lug 72, the blocking of the knuckle arm 5 causes the end part of the pressing arm 221 connected with the pressing head 224 to be unable to be located at the position in the middle between the upper lug 71 and the lower lug 72, so that the force exerted by the pressing head 224 on the upper lug 71 and the lower lug is different, therefore, the auxiliary pressing block 225 is arranged at the top of the pressing head 224, the force exerted by the pressing arm 221 on the pressing head 224 is transferred to the position in the middle of the pressing head 224 through the auxiliary pressing block 225, thereby ensuring that the force bearing point of the pressing head 224 is as middle as possible between the contact points of the pressing head 224 and the upper lug 71 and the lower lug 72, so that the upper lug 71 and the lower lug 72 can be uniformly stressed during pressing, and the whole knuckle is more stable during pressing, the processing quality of the main pin hole of the steering knuckle is further improved.
Furthermore, a hole 11 opposite to the positioning hole 212 is formed in the base 1, the depth of the hole 11 is larger than the length of the steering knuckle journal 3 extending out of the positioning body 21, the steering knuckle journal 3 is inserted into the positioning hole 212 until the steering knuckle disk part 4 contacts with the positioning surface, and the portion, extending out of the positioning hole 212, of the steering knuckle journal 3 enters the hole 11 opposite to the positioning hole 212 in the base 1, so that the depth of the positioning hole 212 does not need to be too deep, the thickness of the positioning body 21 can be greatly reduced, the clamp is lighter and lighter, positioning can be achieved for steering knuckle journals 3 with different sizes, meanwhile, the hole diameter of the hole 11 in the base 1 is large, the steering knuckle journal 3 can be adjusted in a left-right swinging mode during clamping, the steering knuckle ears 7 can be in better contact with the pressing device 22, and the pressing effect is improved.
The working principle of the invention is as follows: during positioning, the knuckle journal 3 is inserted into the positioning hole 212 until the knuckle disc part 4 contacts the positioning surface 211, the part of the knuckle journal 3 extending out of the positioning hole 212 enters a hole on the base 1 opposite to the positioning hole 212, then the knuckle arm 5 is arranged between the fixed positioning seat 231 and the movable positioning seat 232, one side of the knuckle arm 5 is positioned through the positioning bolt 233, then is pressed through the pressing bolt 234 to quickly clamp and position the knuckle, finally, one end of the pressing arm 221 is driven to move upwards through the pressing oil cylinder 223 to enable the pressing arm 221 to rotate around the point of connection with the supporting arm 222, so that one end of the pressing arm 221 above the knuckle lug part 7 is driven to move downwards until the pressing head 224 at the end of the pressing arm 221 contacts the knuckle lug part 7 and gradually presses the knuckle lug part 7, and the whole knuckle with the arm is fixed on the positioning body 21 The pressing device 22 and the knuckle arm positioning portion 23 are matched with each other, the problem that the structure of the knuckle with the arm is complex and the clamping and positioning are not good is solved, the complex structure is fully utilized, the knuckle with the arm is quickly and accurately positioned, the positioning accuracy is high, the clamping process is simple, the production efficiency is high, and the drilling accuracy is high.
Claims (7)
1. Area arm knuckle king pin hole boring grab, including base (1) and positioner (2) of setting on base (1), its characterized in that: positioner (2) are including location body (21) and closing device (22), be equipped with locating surface (211) that is used for advancing line location to knuckle dish portion (4) on the location body (21), be equipped with locating hole (212) that are used for advancing line location to knuckle axle journal (3) on locating surface (211), contained angle between locating surface (211) and the horizontal plane equals with the contained angle between knuckle dish portion (4) and knuckle owner pinhole axis (6), one side of the location body (21) still is equipped with knuckle arm location portion (23) that are used for advancing line location to knuckle arm (5).
2. The armed knuckle king pin hole boring grab of claim 1, characterized in that: a positioning sleeve (213) is arranged in the positioning hole (212), the outer wall of the positioning sleeve (213) is tightly matched with the inner wall of the positioning hole (212), and the positioning sleeve (213) is coaxial with the positioning hole (212).
3. The armed knuckle king pin hole boring grab of claim 1, characterized in that: closing device (22) are including pressing arm (221), support arm (222) and compression cylinder (223), the one end of pressing arm (221) rotates with the telescopic shaft that compresses tightly hydro-cylinder (223) to be connected, the other end of pressing arm (221) extends to the direction of knuckle ear (7), support arm (222) are located and compress tightly between hydro-cylinder (223) and knuckle ear (7), the lower extreme of support arm (222) is fixed on base (1), the upper end and the pressure arm (221) of support arm (222) rotate to be connected, it fixes on base (1) to compress tightly hydro-cylinder (223), it is connected with the one end of pressing arm (221) to compress tightly hydro-cylinder (223), the other end of pressing arm (221) is located the top of knuckle ear (7).
4. The armed knuckle king pin hole boring grab of claim 1, characterized in that: knuckle arm location portion (23) are including fixed positioning seat (231) and activity positioning seat (232), fixed positioning seat (231) and activity positioning seat are fixed respectively in the both sides of knuckle arm (5), be equipped with positioning bolt (233) and housing bolt (234) on fixed positioning seat (231) and the activity positioning seat (232) respectively, positioning bolt (233) and housing bolt (234) can be dismantled with fixed positioning seat (231) and activity positioning seat (232) respectively and be connected, housing bolt (234) and activity positioning seat (232) threaded connection, positioning bolt (233) and housing bolt (234) relative one end are relative with the both sides of knuckle arm (5) respectively.
5. The armed knuckle king pin hole boring grab of claim 3, characterized in that: one end that pressure arm (221) extend to knuckle ear (7) direction is equipped with pressure head (224), pressure arm (221) compress tightly knuckle ear (7) through pressure head (224), the bottom both ends of pressure head (224) are relative with last ear (71) and lower ear (72) of knuckle ear (7) respectively.
6. The armed knuckle king pin hole boring grab of claim 5, characterized in that: the top of the pressure head (224) is also provided with an auxiliary pressing block (225), the auxiliary pressing block (225) is fixedly connected with the pressure arm (221), and the contact area of the auxiliary pressing block (225) and the pressure arm (221) with the pressure head (224) is located in the middle between the upper lug (71) and the lower lug (72).
7. The armed knuckle king pin hole boring grab of claim 1, characterized in that: the base (1) is provided with a hole (11) opposite to the positioning hole (212), and the depth of the hole (11) is larger than the length of the steering knuckle journal (3) extending out of the positioning body (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110491177.6A CN113211144B (en) | 2021-05-06 | 2021-05-06 | Drilling fixture for main pin hole of steering knuckle with arm |
Applications Claiming Priority (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115430862A (en) * | 2022-09-29 | 2022-12-06 | 湖北洪伯车辆有限公司 | Combined machine tool for machining steering knuckle |
| CN115555995A (en) * | 2022-09-26 | 2023-01-03 | 沈阳飞机工业（集团）有限公司 | Integrated grinding clamp for inner and outer surfaces of notch of support arm and using method of integrated grinding clamp |
| CN115570175A (en) * | 2022-09-29 | 2023-01-06 | 湖北洪伯车辆有限公司 | Machine tool special for steering knuckle |
| CN117259854A (en) * | 2023-11-23 | 2023-12-22 | 河南祥瑞汽车部件有限公司 | Knuckle machining device and machining process thereof |
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| CN104339202A (en) * | 2013-07-26 | 2015-02-11 | 东风德纳车桥有限公司 | Flexible quick-changing locating device |
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| CN206296703U (en) * | 2016-12-26 | 2017-07-04 | 安徽江淮汽车集团股份有限公司 | Knuckle milling process frock |
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| CN201769074U (en) * | 2010-08-25 | 2011-03-23 | 柳州市志宝机械有限公司 | Steering knuckle boring clamp |
| CN104339202A (en) * | 2013-07-26 | 2015-02-11 | 东风德纳车桥有限公司 | Flexible quick-changing locating device |
| CN104338958A (en) * | 2013-07-26 | 2015-02-11 | 东风德纳车桥有限公司 | Steering knuckle master pin hole flexible positioning machining system. |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115555995A (en) * | 2022-09-26 | 2023-01-03 | 沈阳飞机工业（集团）有限公司 | Integrated grinding clamp for inner and outer surfaces of notch of support arm and using method of integrated grinding clamp |
| CN115555995B (en) * | 2022-09-26 | 2024-03-08 | 沈阳飞机工业（集团）有限公司 | Integrated grinding fixture for inner and outer surfaces of support arm notch and application method thereof |
| CN115430862A (en) * | 2022-09-29 | 2022-12-06 | 湖北洪伯车辆有限公司 | Combined machine tool for machining steering knuckle |
| CN115570175A (en) * | 2022-09-29 | 2023-01-06 | 湖北洪伯车辆有限公司 | Machine tool special for steering knuckle |
| CN117259854A (en) * | 2023-11-23 | 2023-12-22 | 河南祥瑞汽车部件有限公司 | Knuckle machining device and machining process thereof |
| CN117259854B (en) * | 2023-11-23 | 2024-04-19 | 河南祥瑞汽车部件有限公司 | Knuckle machining device and machining process thereof |
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|---|---|
| CN113211144B (en) | 2022-08-30 |
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