Combined pressing plate for vertical lathe
By designing the combined pressure plate used for the vertical car, and using the clamping unit of the adjustment screw and the upper slide plate, uniform clamping of the thin-wall ring forgings is achieved, solving the deformation problem caused by improper clamping force, and improving processing accuracy and quality reliability.
Patent Information
- Application Number
- CN202421990776.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-16
AI Technical Summary
Thin-wall annular forgings for aerospace are prone to radial elliptical deformation and axial warping due to improper clamping force when turning, and the processing size and shape tolerance are difficult to ensure, which poses a quality and safety hazard.
A combined pressure plate used for vertical car is designed, including a clamp unit. By adjusting the coordination between the screw and the upper slide, uniform clamping of the forgings is achieved, and multiple bolts are used to tighten to ensure the stability and machining accuracy of the forgings.
It effectively reduces the processing deformation of thin-wall ring forgings, improves the stability of processing size and shape tolerance, reduces the risk of product scrapping, and improves the reliability of processing quality.
Smart Images
Figure CN223083850U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a combined pressing plate for a vertical lathe, belonging to the technical field of aerospace forging processing equipment. Background Technique
[0002] For thin-walled annular forgings for aerospace applications (radial wall thickness dimension ≤ 25 mm or axial height dimension ≤ 25 mm), during turning, since the forging billet often needs to be adjusted by a four-jaw chuck to eliminate forging defects, when the forging billet is clamped after being aligned by the four-jaw claws, due to the thin wall thickness of the annular forging, when the radial clamping force exceeds the bearing capacity, it is easy to become unstable, resulting in radial elliptical deformation and axial warping of the forging. At the same time, the additional internal stress generated in the forging seriously affects the machining dimensions and geometric tolerance requirements of the forging, leading to out-of-tolerance scrapping. When using a torque wrench for clamping, the process designers often determine the clamping force size based on experience, which easily causes the clamping force to be either too large or too small, bringing potential quality and safety hazards to product processing. Content of the Utility Model
[0003] The technical problem to be solved by the utility model is to provide a combined pressing plate for a vertical lathe to solve the technical problems existing in the above-mentioned prior art.
[0004] The technical solution adopted by the utility model is as follows: a combined pressing plate for a vertical lathe includes a clamping unit. The clamping unit includes a lower base, the lower base is slidably connected to the vertical lathe chuck, and an adjusting screw rod with its axis vertically upward is rotatably connected to the lower base; the lower part of the adjusting screw rod is limited on the lower base by a locking nut, and the upper end of the adjusting screw rod is threadedly connected with an upper sliding plate, and the upper sliding plate can only slide up and down under the drive of the adjusting screw rod; a bolt for pressing the upper end of the forging is threadedly connected to the upper sliding plate; the number of the clamping units is set to be more than 3 and is circumferentially evenly distributed about the axis of the forging.
[0005] Preferably, the bolt is an internal hexagonal bolt.
[0006] Preferably, the number of the bolts on each clamping unit is set to be more than 2.
[0007] Preferably, a vertical column is fixed on the lower base, the cross-section of the column is polygonal, and the upper sliding plate is sleeved on the column and can only slide up and down relative to the column.
[0008] The beneficial effect of the utility model: Compared with the prior art, the utility model has a simple structure, can be adjusted according to the height dimension range of the forging, can reduce the specifications and quantities of equal-height spacer blocks, and can effectively solve the problems of thin-walled annular forging processing deformation and fixture standardization. Description of the Drawings
[0009] Figure 1It is a schematic structural diagram of the present utility model.
[0010] Figure 2 is Figure 1 the view from direction A in
[0011] Figure 3 It is a schematic structural diagram of the use of the present utility model.
[0012] The reference numerals in the attached drawings of the specification include: lower base 1, adjusting screw 2, locking nut 3, upper sliding plate 4, bolt 5, vertical lathe chuck 6, copper spacer 7, ring forging 8, equal-height spacer 9, vertical lathe 10, and column 11. Specific implementation mode
[0013] The present utility model will be further introduced below in conjunction with the attached drawings and specific embodiments.
[0014] Embodiment 1:
[0015] A combined pressing plate for use on a vertical lathe, as Figures 1-2 shown, includes a clamping unit. The clamping unit includes a lower base 1, and the lower base 1 is slidably connected to the jaw chute of the vertical lathe chuck 6. A vertically upwardly arranged adjusting screw 2 is rotatably connected to the lower base 1; the lower part of the adjusting screw 2 is limited on the lower base 1 by a locking nut 3. When the locking nut 3 is loosened, the adjusting screw 2 can rotate relative to the lower base 1, and when the locking nut 3 is tightened, the adjusting screw 2 can be locked on the lower base 1; the upper end of the adjusting screw 2 is threadedly connected to an upper sliding plate 4. A vertically arranged column 11 is fixed on the lower base 1, and the cross-section of the column 11 is hexagonal. The upper sliding plate 4 is sleeved on the column 11 and can only slide up and down relative to the column 11; when the adjusting screw 2 rotates forward, it drives the upper sliding plate 4 to slide upward, and when the adjusting screw 2 rotates backward, it drives the upper sliding plate 4 to slide downward, and the principle is similar to that of a lead screw. A bolt 5 for pressing the upper end of the forging is threadedly connected to the right end of the upper sliding plate 4. The bolt 5 is an internal hexagonal bolt, and the number of bolts 5 on each upper sliding plate 4 is set to 2 and arranged front and back in alignment.
[0016] As Figure 3 shown, the number of clamping units is set to 4 and is circumferentially and evenly distributed about the axis of the forging.
[0017] The specific implementation process is as follows: When machining the inner surface of the ring-shaped forging 8, first adjust the vertical lathe chuck 6 to a suitable distance on the vertical lathe 10 according to the outer diameter size of the forging and then fix it. Remove the T-shaped screw and the jaws on the vertical lathe chuck 6. Assemble the present utility model and make the lower base 1 slidably connected to the jaw chute of the vertical lathe chuck 6 (from the outside to the inside). Then, according to the height of the ring-shaped forging 8, the equal-height spacer 9, the copper spacer 7, and the cumulative height of the reserved gap, use the adjusting screw 2 to adjust the upper slide plate to a suitable position. Then hoist and move the lower end face of the forging to contact the equal-height spacer 9. Place the copper spacer 7 on the upper end face of the forging to avoid damaging the body when the upper end face of the forging is pressed. Use an inner hexagon wrench to pre-tighten the bolt 5 and make it contact the upper end of the copper spacer 7. After aligning the inner diameter of the forging, turn the adjusting screw 2 downward. Since the upper slide plate 4 cannot slide downward, the adjusting screw 2 will drive the lower base 1 to rise until it fits with the T-shaped groove surface of the vertical lathe chuck 6 to eliminate the gap. After tightening and fixing it downward with the locking nut 3, use the inner hexagon bolt 5 to finely adjust the pressing force, thus completing the alignment and clamping of the thin-walled ring-shaped forging 8. After machining the inner surface; use the adjusting screw 2 to loosen the clamping unit one by one, slide it out from the T-shaped groove of the vertical lathe chuck 6, change the direction of the clamping unit (from the inside to the outside), and clamp the end face of the forging to then complete the machining of the outer surface of the ring-shaped forging 8.
[0018] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of changes or substitutions, which should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claimed rights.
Claims
1. A combined pressing plate for a vertical lathe, characterized in that: It includes a clamping unit. The clamping unit includes a lower base which is slidably connected to a vertical lathe chuck. A regulating screw rod with its axis vertically upward is rotatably connected to the lower base. The lower part of the regulating screw rod is limited on the lower base by a locking nut. The upper end of the regulating screw rod is threadedly connected with an upper sliding plate which can only slide up and down under the drive of the regulating screw rod. An inner hexagonal bolt for pressing the upper end of the forging is threadedly connected to the upper sliding plate. The number of the clamping units is set to be more than 3 and is circumferentially and evenly distributed about the axis of the forging.
2. The combined pressing plate for vertical lathe according to claim 1, wherein: The bolt is an inner hexagonal bolt.
3. The combined pressing plate for vertical lathe according to claim 1, characterized in that: The number of the bolts on each clamping unit is set to be more than 2.
4. The combined pressing plate for vertical lathe according to claim 1, wherein: A vertical column arranged in the vertical direction is fixed on the lower base. The cross section of the vertical column is polygonal. The upper sliding plate is sleeved on the vertical column and can only slide up and down relative to the vertical column.