CN117340366A - Clamping and positioning device for steering rack of automobile - Google Patents
Clamping and positioning device for steering rack of automobile Download PDFInfo
- Publication number
- CN117340366A CN117340366A CN202210754054.1A CN202210754054A CN117340366A CN 117340366 A CN117340366 A CN 117340366A CN 202210754054 A CN202210754054 A CN 202210754054A CN 117340366 A CN117340366 A CN 117340366A
- Authority
- CN
- China
- Prior art keywords
- mounting plate
- push rod
- steering rack
- clamping
- positioning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000003754 machining Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
- B23F23/02—Loading, unloading or chucking arrangements for workpieces
- B23F23/06—Chucking arrangements
Abstract
The invention discloses an automobile steering rack clamping and positioning device, wherein one end of an automobile steering rack is provided with a pair of parallel horizontal clamping surfaces. The clamping and positioning device for the steering rack of the automobile comprises: positioning clamping mechanism, slide mechanism and mounting panel. The front end of the positioning clamping mechanism is provided with a square notch, and the square notch is matched with the two horizontal clamping surfaces. The sliding component comprises a fixed component and a sliding component, and the sliding component can be horizontally and slidably connected with the fixed component. The mounting plate is fixed in the slip subassembly, location fixture is connected with the mounting plate with vertical movement. The device can ensure accurate position and angle when the machine tool clamps the steering rack of the automobile, and improves the processing quality of the rack.
Description
Technical Field
The invention relates to an automobile steering rack clamping and positioning device.
Background
The rack is an important connecting part for supporting steering of the steering gear, and most of the rack is applied to an executing part of the chassis steering gear and is a moving part with frequent movement and high technical requirements. When the automobile turns, the rack is meshed with the gear to realize the turning, and the service life, reliability and comfort of the whole product are directly influenced by the quality of the processing quality of the rack and the gear. The rack machining requirement is high, the positioning accuracy requirement is strict, and the rack is required to be fixedly clamped by the positioning device in the machining process. The existing positioning device cannot well clamp and fix racks, is complex in structure, complex in operation and poor in fixing effect, and is inconvenient to process.
Disclosure of Invention
The invention aims to overcome the defects of poor clamping effect and complex operation of an automobile steering rack in the prior art, and provides the automobile steering rack clamping and positioning device capable of solving the problems.
The invention solves the technical problems by the following technical scheme:
an automobile steering rack clamping and positioning device, wherein one end of an automobile steering rack is provided with a pair of parallel horizontal clamping surfaces, and the device is characterized by comprising:
the front end of the positioning clamping mechanism is provided with a square notch which is matched with the two horizontal clamping surfaces;
the sliding mechanism comprises a fixed component and a sliding component, and the sliding component can be horizontally and slidably connected with the fixed component;
the mounting plate is fixed to the sliding assembly, and the positioning and clamping mechanism is connected to the mounting plate in a vertically movable mode.
Preferably, the positioning and clamping mechanism comprises a push rod assembly, a positioning block and a push rod mounting plate, wherein the push rod assembly is fixed on the push rod mounting plate, the end part of the push rod assembly is connected with the positioning block, the square notch is positioned on the positioning block, and the push rod mounting plate is connected with the mounting plate in a vertically movable manner.
Preferably, the push rod mounting plate is provided with a long round hole extending along the vertical direction, and the push rod mounting plate is connected with the mounting plate through the long round hole.
Preferably, the push rod assembly comprises a sleeve, a first spring and a square telescopic shaft, the sleeve is connected with the push rod mounting plate, the first spring is mounted in the accommodating cavity of the sleeve, a square hole is formed in one end of the sleeve, one end of the square telescopic shaft penetrates through the square hole to press the first spring, and the other end of the square telescopic shaft is connected with the positioning block.
Preferably, one end of the square telescopic shaft positioned in the sleeve is provided with a limiting part, and the limiting part can be abutted against the inner end surface of the square hole.
Preferably, a groove is formed in one end of the square telescopic shaft, which is located outside the sleeve, a protrusion is formed on the positioning block, the groove is matched with the protrusion, a first threaded hole is formed in the groove, a step hole is formed in the protrusion, and a screw penetrates through the step hole to be connected with the first threaded hole.
Preferably, the outer periphery of the sleeve is provided with external threads, the push rod mounting plate is provided with a second threaded hole, the sleeve is connected with the second threaded hole, the positioning and clamping mechanism further comprises a flange face throat plug nut, and the flange face throat plug nut is connected with the external threads of the sleeve and is pressed on the push rod mounting plate.
Preferably, the positioning and clamping mechanism further comprises a second spring, and two ends of the second spring are respectively pressed on the bottom surface of the push rod mounting plate and the top surface of the sliding assembly along the vertical direction.
Preferably, the clamping and positioning device for the steering rack of the automobile further comprises a limit bolt and a limit bolt mounting plate, wherein a third threaded hole is formed in the limit bolt mounting plate, and the limit bolt passes through the third threaded hole to be abutted to the top surface of the push rod mounting plate.
Preferably, the fixing component comprises a bottom plate and a guide rail, the sliding component comprises a sliding block and a supporting plate, the guide rail is installed on the top surface of the bottom plate, the sliding block is installed on the bottom surface of the supporting plate, the guide rail is matched with the sliding block, and the mounting plate is fixed on the top surface of the supporting plate.
On the basis of conforming to the common knowledge in the field, the above preferred conditions can be arbitrarily combined to obtain the preferred examples of the invention.
The invention has the positive progress effects that: the device can ensure accurate position and angle when the machine tool clamps the steering rack of the automobile, and improves the processing quality of the rack.
Drawings
Fig. 1 is a schematic structural view of a clamping and positioning device for an automotive steering rack in a position state according to a preferred embodiment of the invention, wherein the automotive steering rack is mounted on a positioning block.
Fig. 2 is a schematic structural view of a clamping and positioning device for an automotive steering rack in another position state in a preferred embodiment of the invention, wherein the automotive steering rack is mounted on a positioning block.
Fig. 3 is a schematic view showing an internal structure of the push rod assembly according to the preferred embodiment of the present invention.
Fig. 4 is a schematic view showing the internal structure of the positioning block in the preferred embodiment of the present invention.
Reference numerals illustrate:
automobile steering rack 1000
Positioning clamping mechanism 2000
Push rod assembly 2100
First spring 2110
Sleeve 2120
Square hole 2121
Square telescopic shaft 2130
Limiting portion 2131
Groove 2132
First threaded hole 2133
Positioning block 2200
Square notch 2210
Projections 2220
Step hole 2221
Push rod mounting plate 2300
Slotted hole 2310
Flange face throat plug nut 2400
Second spring 2500
Slide mechanism 3000
Fixing assembly 3100
Base plate 3110
Guide 3120
Sliding assembly 3200
Slider 3210
Support plate 3220
Mounting plate 4000
Limit bolt 5000
Spacing bolt mounting plate 6000
Detailed Description
The invention is further illustrated by means of the following examples, which are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the actual machining process, in order to ensure the machining quality of the steering rack of the automobile, the clamping quality is ensured, and on one hand, the levelness and the position of the central line of the steering rack of the automobile are ensured to be accurate during clamping; on the other hand, when the clamping is required to be ensured, the circumferential angle position of the steering rack of the automobile is accurate. Meanwhile, the machining clamping mode of the automobile steering rack is similar to that of the bench clamp, so that the automobile steering rack cannot horizontally move in the clamping process, and the positioning device can synchronously and horizontally move.
To achieve this, fig. 1 and 2 show an automotive steering rack clamping and positioning device, with an end of an automotive steering rack 1000 having a pair of parallel horizontal clamping surfaces (not shown). The clamping and positioning device for the steering rack of the automobile comprises: a positioning clamping mechanism 2000, a sliding mechanism 3000 and a mounting plate 4000. The front end of the positioning and clamping mechanism 2000 is provided with a square notch 2210, and the square notch 2210 is matched with two horizontal clamping surfaces. The sliding mechanism 3000 includes a fixed assembly 3100 and a sliding assembly 3200, and the sliding assembly 3200 is slidably connected to the fixed assembly 3100. The mounting plate 4000 is fixed to the sliding assembly 3200, and the positioning and clamping mechanism 2000 is vertically movably connected to the mounting plate 4000.
When the device is used for positioning, one end of the automobile steering rack 1000 is inserted into the square notch 2210, and the machined surface of the automobile steering rack 1000 can be kept horizontal all the time in the clamping process by adjusting the angle of the square notch 2210. In addition, by adjusting the vertical position relationship between the positioning and clamping mechanism 2000 and the mounting plate 4000, the horizontal height of the steering rack 1000 of the automobile can be adjusted, so that the coincidence between the center line of the steering rack and the center line of the machine tool is ensured, and the machining precision is improved. In addition, the horizontal movement requirement in the clamping process can be met through the sliding mechanism 3000. When the device is used for processing the steering racks of automobiles of the same model in batches, the angle of the square notch 2210 and the height of the positioning clamping mechanism 2000 are adjusted only when the first part is processed, and the subsequent adjustment is not needed, so that the clamping efficiency is effectively improved, and the operation strength is reduced.
In this scheme, location fixture 2000 includes push rod subassembly 2100, locating piece 2200 and push rod mounting panel 2300, and push rod subassembly 2100 is fixed in on the push rod mounting panel 2300, and the end connection of push rod subassembly 2100 is in locating piece 2200, and square breach 2210 is located on locating piece 2200, but push rod mounting panel 2300 and mounting panel 4000 vertical movable ground are connected.
To facilitate the adjustment of the height of the push rod mounting plate 2300, the push rod mounting plate 2300 is provided with a slotted hole 2310 extending in a vertical direction, and the push rod mounting plate 2300 is connected to the mounting plate 4000 through the slotted hole 2310.
In actual machining, the other end of the steering rack 1000 is connected to another positioning device, and in the case of a small opening in the clamping device, it is preferable to insert or remove the steering rack 1000 in the axial direction in order to place it between the two positioning devices. To achieve this, as shown in fig. 3, the push rod assembly 2100 includes a sleeve 2120, a first spring 2110, a square telescopic shaft 2130, the sleeve 2120 is connected to the push rod mounting plate 2300, the first spring 2110 is mounted in a receiving cavity of the sleeve 2120, one end of the sleeve 2120 is provided with a square hole 2121, one end of the square telescopic shaft 2130 is pressed against the first spring 2110 through the square hole 2121, and the other end of the square telescopic shaft 2130 is connected to the positioning block 2200.
When the steering rack is mounted, the positioning block 2200 is pressed first to enable the square telescopic shaft 2130 to be contracted towards the direction until the distance between the positioning block 2200 and the other positioning device is larger than the length of the steering rack 1000 of the automobile, then the other end of the steering rack 1000 of the automobile is inserted into the other positioning device, the positioning block 2200 is loosened, and the positioning block 2200 is always pressed against one end of the steering rack 1000 of the automobile tightly.
In order to prevent the square extension shaft 2130 from falling out of the square hole 2121 when not pressed by a force, one end of the square extension shaft 2130 positioned in the sleeve 2120 has a stopper 2131, and the stopper 2131 can abut against an inner end surface of the square hole 2121.
As will be understood from fig. 3 and 4, one end of the square telescopic shaft 2130 located outside the sleeve 2120 is provided with a groove 2132, the positioning block 2200 is provided with a protrusion 2220, the groove 2132 is matched with the protrusion 2220, the groove 2132 is provided with a first threaded hole 2133, the protrusion 2220 is provided with a step hole 2221, and a screw is connected to the first threaded hole 2133 through the step hole 2221. The groove 2132 and the projection 2220 are matched, so that the accuracy of the connection position of the groove 2132 and the projection 2220 can be ensured, and the assembly difficulty is reduced.
In this embodiment, the sleeve 2120 has an external thread on the outer periphery, the push rod mounting plate 2300 has a second threaded hole (not shown), the sleeve 2120 is connected to the second threaded hole, the positioning and clamping mechanism 2000 further includes a flange face throat plug nut 2400, and the flange face throat plug nut 2400 is connected to the external thread of the sleeve 2120 and presses against the push rod mounting plate 2300. The flange face throat plug nut 2400 and the second threaded hole form a double nut structure, and can effectively prevent the sleeve 2120 from loosening.
In this scheme, the positioning and clamping mechanism 2000 further includes a second spring 2500, and two ends of the second spring 2500 are respectively pressed on the bottom surface of the push rod mounting plate 2300 and the top surface of the sliding assembly 3200 along the vertical direction. The supporting force of the second spring 2500 to the push rod mounting plate 2300 is more convenient for adjusting the height position of the push rod mounting plate 2300 on the mounting plate 4000.
In order to further improve the accuracy of adjusting the horizontal height of the steering rack 1000 of the automobile and reduce the operation difficulty, the clamping and positioning device for the steering rack of the automobile further comprises a limit bolt 5000 and a limit bolt mounting plate 6000, wherein a third threaded hole (not shown in the figure) is formed in the limit bolt mounting plate 6000, and the limit bolt 5000 passes through the third threaded hole and is abutted to the top surface of the push rod mounting plate 2300.
In this scheme, the fixing assembly 3100 includes a base plate 3110 and a guide rail 3120, the sliding assembly 3200 includes a slider 3210 and a support plate 3220, the guide rail 3120 is mounted on a top surface of the base plate 3110, the slider 3210 is mounted on a bottom surface of the support plate 3220, the guide rail 3120 is matched with the slider 3210, and the mounting plate 4000 is fixed on a top surface of the support plate 3220. The base plate 3110 is fixed to the machine tool.
The principle and flow of using this device to locate are as follows:
first, the automobile steering rack 1000 is clamped by a machine tool, the center line of the automobile steering rack 1000 coincides with the center line of the machine tool, at this time, the positioning block 2200 is connected to one end of the automobile steering rack 1000, and the push rod mounting plate 2300 is adjusted up and down by screwing the limit bolt 5000, so that the center lines of the positioning block 2200 and the push rod assembly 2100 coincide with the center lines of the automobile steering rack 1000 and the machine tool. Then, the machine tool loosens the automobile steering rack 1000, and the upper end face of the positioning block 2200 is leveled through the sleeve 2120 and the flange face throat plug nut 2400, so that the machined face of the automobile steering rack 1000 is leveled. Then, the machine tool clamps the steering rack 1000 again, and during the clamping process, the steering rack 1000 drives the positioning block 2200 to move horizontally, and the positioning block 2200 is connected with the push rod assembly 2100, so that the support plate 3220 and the sliding block 3210 are indirectly driven to move on the guide rail 3120. When moved into place, the support plate 3220 may be secured to the base plate 3110 using a fastening device. When the automobile steering rack 1000 needs to be removed, the push rod assembly 2100 is provided, so that the automobile steering rack 1000 can be easily removed by axially pressing the square telescopic shaft 2130 on the automobile steering rack 1000 when the machine tool is released.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the invention, but such changes and modifications fall within the scope of the invention.
Claims (10)
1. An automotive steering rack clamping and positioning device, wherein one end of an automotive steering rack is provided with a pair of parallel horizontal clamping surfaces, and the device is characterized by comprising:
the front end of the positioning clamping mechanism is provided with a square notch which is matched with the two horizontal clamping surfaces;
the sliding mechanism comprises a fixed component and a sliding component, and the sliding component can be horizontally and slidably connected with the fixed component;
the mounting plate is fixed to the sliding assembly, and the positioning and clamping mechanism is connected to the mounting plate in a vertically movable mode.
2. An automotive steering rack clamping and positioning device as claimed in claim 1 wherein the positioning and clamping mechanism comprises a push rod assembly, a positioning block and a push rod mounting plate, the push rod assembly being fixed to the push rod mounting plate, the end of the push rod assembly being connected to the positioning block, the square notch being located on the positioning block, the push rod mounting plate being vertically movably connected to the mounting plate.
3. An automotive steering rack clamping and positioning device as claimed in claim 2 wherein said push rod mounting plate is provided with a slotted hole extending in a vertical direction, said push rod mounting plate being connected to said mounting plate by said slotted hole.
4. A steering rack clamping and positioning device for a vehicle as claimed in claim 3 wherein the push rod assembly comprises a sleeve, a first spring and a square telescopic shaft, the sleeve is connected to the push rod mounting plate, the first spring is mounted in the accommodating cavity of the sleeve, one end of the sleeve is provided with a square hole, one end of the square telescopic shaft is pressed on the first spring through the square hole, and the other end of the square telescopic shaft is connected to the positioning block.
5. An automotive steering rack clamping and positioning device as claimed in claim 4 wherein one end of the square telescopic shaft located in the sleeve is provided with a limiting portion which can abut against an inner end face of the square hole.
6. An automotive steering rack clamping and positioning device as claimed in claim 4 wherein one end of the square telescopic shaft located outside the sleeve is provided with a groove, the positioning block is provided with a protrusion, the groove is matched with the protrusion, the groove is internally provided with a first threaded hole, the protrusion is internally provided with a step hole, and a screw passes through the step hole and is connected with the first threaded hole.
7. An automotive steering rack clamping and positioning device as described in claim 4 wherein said sleeve is externally threaded, said push rod mounting plate is provided with a second threaded hole, said sleeve is connected to said second threaded hole, said positioning and clamping mechanism further comprises a flange face throat plug nut, said flange face throat plug nut being connected to said sleeve external threads and being pressed against said push rod mounting plate.
8. A steering rack clamping and positioning device for a vehicle as claimed in claim 3 wherein said positioning and clamping mechanism further comprises a second spring, both ends of said second spring being respectively pressed against the bottom surface of said push rod mounting plate and the top surface of said sliding assembly in a vertical direction.
9. An automotive steering rack clamping and positioning device as described in claim 8, further comprising a limit bolt and a limit bolt mounting plate, wherein a third threaded hole is formed in the limit bolt mounting plate, and the limit bolt passes through the third threaded hole to be abutted against the top surface of the push rod mounting plate.
10. An automotive steering rack clamping and positioning device as claimed in claim 1 wherein said fixed assembly comprises a base plate and a guide rail, said sliding assembly comprises a slider and a support plate, said guide rail is mounted to the top surface of said base plate, said slider is mounted to the bottom surface of said support plate, said guide rail is mated with said slider, and said mounting plate is secured to the top surface of said support plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210754054.1A CN117340366A (en) | 2022-06-28 | 2022-06-28 | Clamping and positioning device for steering rack of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210754054.1A CN117340366A (en) | 2022-06-28 | 2022-06-28 | Clamping and positioning device for steering rack of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117340366A true CN117340366A (en) | 2024-01-05 |
Family
ID=89365593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210754054.1A Pending CN117340366A (en) | 2022-06-28 | 2022-06-28 | Clamping and positioning device for steering rack of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117340366A (en) |
-
2022
- 2022-06-28 CN CN202210754054.1A patent/CN117340366A/en active Pending
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