A quick centering mechanism for a press plate applied to a stacker mill
By employing a mechanical centering structure in stack milling, and utilizing the centering guide ring and tapered surface design, the self-resetting and centering operation of the pressure plate bracket is achieved, solving the problems of easy chip jamming and fatigue in spring centering structures, and improving machining accuracy and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU INTENOR CNC TECH CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-06-12
AI Technical Summary
In traditional stack milling, the spring return structure is prone to chip jamming and fatigue failure, resulting in low and unstable machining accuracy.
The mechanical centering structure is adopted. Through the centering guide ring and conical surface design, the self-resetting and centering operation of the pressure plate bracket is realized. The centering cylinder drives the centering rod to insert into the guide ring to ensure the precise positioning of the pressure plate bracket.
It improves machining accuracy and stability, avoids chip jamming and fatigue problems in the spring return structure, and achieves high-precision pressure plate return operation.
Smart Images
Figure CN224347376U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of stack milling technology, specifically a quick return mechanism for pressure plates applied to stack milling. Background Technology
[0002] Stack milling technology is mainly used for machining multi-layer composite materials (such as CFRP / titanium alloy, Mg / Al, and other laminated structures), especially in the aerospace field where high-precision, low-damage machining is crucial. In the aerospace field, the common machining method for sheet metal involves stacking multiple layers of sheet metal, fixing them in place by pressing with a clamping fixture, and then machining them again. This clamping and pressing method can only machine the pressed area, which cannot be too large. When machining to the edge of the pressed area, the clamping fixture needs to be lifted to return to center before pressing down again. Traditionally, a spring is used for automatic centering of the fixture, but springs are prone to chip jamming and fatigue failure over time. Therefore, a rapid centering mechanism for the clamping plate in stack milling is proposed. Utility Model Content
[0003] The purpose of this utility model is to provide a quick return mechanism for the pressure plate in stack milling, in order to solve the problems mentioned above.
[0004] The technical solution adopted by this utility model is as follows: A quick centering mechanism for a pressure plate in a stack milling machine includes a back plate installed on the crossbeam of the stack milling machine. A pressing mechanism is provided on the front end face of the back plate, and a pressure plate bracket is provided at the bottom of the pressing mechanism. A centering guide ring is installed at the center of the top of the pressure plate bracket. A centering cylinder is installed on the pressing mechanism above the centering guide ring. A centering rod that can move up and down along the centering guide ring is installed at the output end of the centering cylinder. A tapered surface is provided at the lower end of the centering rod. A guide slope with the same angle as the tapered surface is provided on the upper edge of the inner ring of the centering guide ring. When the tapered surface moves downward and inserts into the centering guide ring, the centering guide ring and the tapered surface are coaxially arranged to realize the centering operation of the pressure plate bracket.
[0005] In a preferred embodiment, the pressing mechanism is used to drive the pressure plate bracket to move in the vertical direction, and the pressing mechanism can move relative to the pressure plate bracket in the X-axis and Y-axis directions.
[0006] In a preferred embodiment, the pressing mechanism includes a pressing cylinder and a support plate. The output end of the pressing cylinder is connected to the support plate. The support plate is generally L-shaped. A plurality of first sliders are provided on the back of the support plate. A first guide rail is provided on the front end of the back plate to guide the sliding of the first sliders.
[0007] In a preferred embodiment, a plurality of second guide rails are provided at the bottom of the transverse portion of the support plate along the Y-axis direction, a second slider is slidably mounted on the second guide rails, and a transition plate is installed at the bottom of the second slider.
[0008] In a preferred embodiment, the centering cylinder is mounted on the transverse portion of the support plate, and the transition plate has a through hole in the middle to allow the centering rod to pass through.
[0009] In a preferred embodiment, the bottom end of the transition plate is provided with a plurality of third guide rails along the X-axis direction, and a third slider is slidably mounted on the third guide rails, the bottom of the third slider being connected to the top of the pressure plate bracket.
[0010] In a preferred embodiment, the bottom of the pressure plate bracket has a central through hole that extends vertically through it. When the pressure plate bracket is in the centering state, the central through hole is concentric with the main shaft of the stacking milling machine.
[0011] In a preferred embodiment, a pressure plate is mounted on the pressure plate bracket at the bottom end of the central through hole, and the pressure plate is made of rigid PU material.
[0012] In a preferred embodiment, a dust suction port communicating with the central through hole is provided on one side of the pressure plate bracket, and the dust suction port is connected to an external dust suction device.
[0013] In a preferred embodiment, the back plate is provided with a fourth slider that can be slidably mounted on the stacked milling beam, and the back plate is mounted on a slide saddle in the stacked milling beam.
[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: A mechanical centering structure is designed on the pressure plate bracket. When the spindle is machined to the edge of the central through hole, the Z-axis of the equipment is raised. At the same time, the mechanism moves upward as a whole under the action of the pressing cylinder. Then, the centering cylinder presses down quickly, and the centering rod is quickly inserted into the centering guide ring on the pressure plate bracket. Due to the influence of the conical surface and the guide slope, the centering guide ring and the pressure plate bracket can achieve self-resetting and centering operation during the insertion process. The centering operation of the pressure plate bracket is achieved by using a purely mechanical structure. Compared with the traditional spring centering structure, it has higher precision and is more stable and reliable. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the entire utility model;
[0016] Figure 2 This is a cross-sectional plan view of the overall structure of this utility model;
[0017] Figure 3 for Figure 2Enlarged structural diagram at point A;
[0018] Figure 4 This is a schematic diagram of the overall structure of the present invention combined with the stacking milling equipment.
[0019] The markings in the diagram are: 1-back plate, 2-downward cylinder, 3-support plate, 4-return cylinder, 5-first slider, 6-first guide rail, 7-fourth slider, 8-transition plate, 9-pressure plate support, 91-center through hole, 92-dust suction interface, 10-pressure plate, 11-return rod, 111-conical surface, 12-return guide ring, 121-guide slope. Detailed Implementation
[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0023] Reference Figure 1-4A quick centering mechanism for a pressure plate used in stack milling machines includes a back plate 1 mounted on a stack milling machine beam. A pressing mechanism is located on the front end of the back plate 1, and a fourth slider 7, slidably mounted on the stack milling machine beam, is located on the back of the back plate 1. The back plate 1 is mounted on a sliding saddle within the stack milling machine beam, allowing the entire assembly to move together along the machine beam direction via a program (this is an existing, feasible technology, not described in detail here). A pressure plate support 9 is located at the bottom of the pressing mechanism, and a centering guide ring 12 is mounted at the center of the top of the pressure plate support 9. A centering cylinder 4 is mounted on the pressing mechanism above the centering guide ring 12. A centering rod 11, movable up and down along the centering guide ring 12, is mounted at the output end of the centering cylinder 4. A tapered surface 111 is located at the lower end of the centering rod 11, and the upper edge of the inner ring of the centering guide ring 12 has an angle corresponding to the tapered surface 111. With the same guide slope 121, when the conical surface 111 moves downward and inserts into the centering guide ring 12, the centering guide ring 12 and the conical surface 111 are coaxially arranged to realize the centering operation of the pressure plate bracket 9. A mechanical centering structure is designed on the pressure plate bracket 9. When the centering operation is required, the pressing mechanism drives the pressure plate bracket 9 to move upward as a whole. Then, the centering cylinder 4 presses down quickly, and the centering rod 11 is quickly inserted into the centering guide ring 12 on the pressure plate bracket 9. Due to the influence of the conical surface 111 and the guide slope 121, the centering guide ring 12 and the pressure plate bracket 9 can achieve self-resetting and centering operation during the insertion process (that is, the centering rod 11 achieves self-centering operation during the downward movement). The centering operation of the pressure plate bracket 9 is realized by using a pure mechanical structure, which is more accurate and more stable and reliable than the traditional spring centering structure.
[0024] Specifically, both the centering guide ring 12 and the centering rod 11 are made of wear-resistant and smooth materials, such as stainless steel, to ensure that the centering rod 11 does not get stuck when it is inserted into the centering guide ring 12.
[0025] In this embodiment, the pressing mechanism is used to drive the pressure plate bracket 9 to move in the vertical direction, and the pressing mechanism can move relative to the pressure plate bracket 9 in the X-axis and Y-axis directions. The pressing mechanism includes a pressing cylinder 2 and a bracket plate 3. The output end of the pressing cylinder 2 is connected to the bracket plate 3. The bracket plate 3 is generally L-shaped. Several sets of first sliders 5 are provided on the back of the bracket plate 3, and a first guide rail 6 is provided on the front end face of the back plate 1 to guide the sliding of the first sliders 5. (Refer to...) Figures 1-3As shown, the bottom of the horizontal part of the support plate 3 is provided with several sets of second guide rails along the Y-axis. A second slider is slidably installed on the second guide rail. A transition plate 8 is installed at the bottom of the second slider. The centering cylinder 4 is installed on the horizontal part of the support plate 3. A through hole is opened in the middle of the transition plate 8 to allow the centering rod 11 to pass through. Several sets of third guide rails are provided at the bottom of the transition plate 8 along the X-axis. A third slider is slidably installed on the third guide rail. The bottom of the third slider is connected to the top of the pressure plate support 9. A transition plate 8 is designed between the support plate 3 and the pressure plate support 9. During processing, the pressing cylinder 2 drives the entire mechanism to quickly press down to the surface of the aluminum plate to realize the positioning operation of the workpiece. Then the equipment performs the processing of the aluminum plate. During this process, the transition plate 8 will move with the equipment (because the mechanism has guide rail mechanisms in both directions), but the pressure plate support 9 always maintains the pressing action and will not move, so the positioning and processing operations of the workpiece can be realized simultaneously.
[0026] In this embodiment, a central through hole 91 is vertically opened at the bottom of the pressure plate bracket 9. When the pressure plate bracket 9 is in the centering state, the central through hole 91 is concentric with the spindle in the stack milling machine. During the spindle's machining of the workpiece, synchronous fixing operation can be achieved through the pressure plate bracket 9, which can improve the machining accuracy.
[0027] In this embodiment, refer to Figure 1 and Figure 2 As shown, a pressure plate 10 is installed on the pressure plate bracket 9 at the bottom of the central through hole 91. The pressure plate 10 is made of hard PU material. When the pressure plate bracket 9 presses the workpiece down, the pressure plate 42 will replace the pressure plate bracket 9 to contact the workpiece, so that it will not vibrate during processing. Moreover, the pressure plate 42 is made of hard PU, so it will not damage the surface of the workpiece while performing the pressing operation.
[0028] In this embodiment, refer to Figure 2 As shown, a dust collection interface 92 connected to the central through hole 91 is provided on one side of the pressure plate bracket 9. The dust collection interface 92 is connected to an external dust collection device. During the processing, a large amount of aluminum shavings will be generated. After the dust collection interface 92 is connected to the external dust collection device, the dust collection device can suck up the waste shavings through the dust collection interface 43 to achieve waste removal. The external dust collection device can be a vacuum cleaner (with a connector that is adapted to connect to the dust collection interface 92), etc.
[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A quick centering mechanism for a pressure plate applied in stack milling, characterized in that, The device includes a back plate mounted on a stacked milling beam. A pressing mechanism is provided on the front end of the back plate. A pressure plate bracket is provided at the bottom of the pressing mechanism. A centering guide ring is installed at the center of the top of the pressure plate bracket. A centering cylinder is installed on the pressing mechanism above the centering guide ring. A centering rod that can move up and down along the centering guide ring is installed at the output end of the centering cylinder. A tapered surface is provided at the lower end of the centering rod. A guide slope with the same angle as the tapered surface is provided on the upper edge of the inner ring of the centering guide ring. When the tapered surface moves downward and inserts into the centering guide ring, the centering guide ring and the tapered surface are coaxially arranged to achieve the centering operation of the pressure plate bracket.
2. The quick centering mechanism for the pressure plate applied to stack milling as described in claim 1, characterized in that: The pressing mechanism is used to drive the pressure plate bracket to move in the vertical direction, and the pressing mechanism can move relative to the pressure plate bracket in the X-axis and Y-axis directions.
3. The quick centering mechanism for the pressure plate applied to stack milling as described in claim 2, characterized in that: The pressing mechanism includes a pressing cylinder and a support plate. The output end of the pressing cylinder is connected to the support plate. The support plate is generally L-shaped. Several sets of first sliders are provided on the back of the support plate. The front end of the back plate is provided with a first guide rail to guide the sliding of the first sliders.
4. The quick centering mechanism for the pressure plate applied to stack milling as described in claim 3, characterized in that: The bottom of the horizontal portion of the support plate is provided with several sets of second guide rails along the Y-axis direction. A second slider is slidably mounted on the second guide rail, and a transition plate is installed at the bottom of the second slider.
5. The quick centering mechanism for the pressure plate applied to stack milling as described in claim 4, characterized in that: The centering cylinder is installed on the horizontal part of the support plate, and the transition plate has a through hole in the middle to allow the centering rod to pass through.
6. The quick centering mechanism for the pressure plate applied to stack milling as described in claim 4, characterized in that: The bottom end of the transition plate is provided with several sets of third guide rails along the X-axis direction. A third slider is slidably installed on the third guide rails, and the bottom of the third slider is connected to the top of the pressure plate bracket.
7. The quick centering mechanism for the pressure plate applied to stack milling as described in claim 1, characterized in that: The bottom of the pressure plate bracket has a central through hole that runs vertically through it. When the pressure plate bracket is in the centering state, the central through hole is concentric with the main shaft of the stacking milling machine.
8. The quick centering mechanism for a pressure plate applied to a stacking milling machine as described in claim 7, characterized in that: A pressure plate is mounted on the pressure plate bracket at the bottom of the central through hole. The pressure plate is made of rigid PU material.
9. A quick centering mechanism for a pressure plate applied to a stacking milling machine as described in claim 7, characterized in that: The pressure plate bracket has a dust suction port on one side that communicates with the central through hole, and the dust suction port is connected to an external dust suction device.
10. The quick centering mechanism for a pressure plate applied to a stack milling machine as described in claim 1, characterized in that: The back plate is provided with a fourth slider that can be slidably mounted on the stacked milling beam, and the back plate is mounted on a slide saddle in the stacked milling beam.