A three-stage floating integrated press-fitting tool

Abstract

The present invention discloses a three-stage floating integrated press-fitting tool, which relates to the technical field of press-fitting tooling. It includes a device body, which includes an upper press plate and a lower press plate, a first floating support and a floating middle support plate are provided between the upper press plate and the lower press plate, a floating middle support plate is provided on the lower press plate for placing the workpiece, and a contoured pressure block corresponding to the workpiece is provided on the lower end face of the upper press plate, the floating middle support plate is connected to the lower press plate through a second floating support, and a plurality of clamping assemblies for clamping the workpiece are provided on the floating middle support plate; a floating pressure head assembly, wherein one end of the floating pressure head is fixed on the lower press plate, and the other end passes through the corresponding through hole on the floating middle support plate and corresponds to the reserved hole of the water pipe to be pressed on the workpiece; the floating pressure head assembly includes a floating pressure head, a guide sleeve, a floating core rod, a base and a floating spring. The present invention sets a three-stage floating structure, so that the workpiece and the water pipe interface can be accurately and efficiently installed during the press-fitting process, thereby overcoming the existing problems such as inaccurate positioning and shaking during the press-fitting process.

Description

Technical Field

[0001] The present invention relates to the technical field of press-fitting tooling, and in particular to a three-section floating integrated press-fitting tooling. Background Art

[0002] At present, for the press-fitting of interfaces on irregular surfaces, the workpiece is generally pre-positioned and fixed, and then the interface to be press-fitted is press-fitted onto the workpiece interface; but there are generally some problems here: 1. In order to accurately position the direction of the workpiece interface, it is necessary to set up customized tooling to support and clamp the workpiece, especially for irregular aluminum workpieces with large cavities, the force points need to be paid great attention to; 2. Due to uneven force and workpiece accuracy problems during the press-fitting process, shaking during the press-fitting process and inconsistent coaxiality after installation often occur, which makes subsequent assembly difficult.

[0003] Chinese Patent 2022224439665 discloses a floating tooling for ensuring coaxiality during press-fitting, comprising: an upper positioning tooling, on which is provided an upper positioning station for positioning and floatingly supporting the upper workpiece, the upper positioning tooling being installed parallel to the upper part of the tooling platform through a guide structure; a lower positioning tooling, on which is provided at least two lower positioning stations for positioning and guiding the lower workpiece, the lower positioning tooling being slidably installed on the tooling platform and driven by a transposition drive structure so that each lower positioning station is alternately moved to the position directly below the upper positioning station. The patent's use of floating support and positioning does solve some of the problems of press-fitting, but there is currently no relevant reference technology for how to perform efficient and high-quality press-fitting of irregular cavity aluminum workpieces. Therefore, there is a need for a tooling that can meet the needs of regular cavity aluminum workpieces for rapid press-fitting of interface parts. Summary of the Invention

[0004] In response to the shortcomings of the above-mentioned existing technologies, the present invention provides a three-stage floating integrated pressing tooling. By setting up a three-stage floating structure, the workpiece and the water pipe interface can be installed accurately and efficiently during the pressing process, overcoming the existing problems such as inaccurate positioning and shaking during the pressing process.

[0005] The specific technical solutions are as follows:

[0006] A three-stage floating integrated press-fitting tool comprises a device body, wherein the device body comprises an upper pressing plate and a lower pressing plate, and a first floating support is provided between the upper pressing plate and the lower pressing plate;

[0007] A floating middle support plate is provided on the lower pressing plate for placing the workpiece, and a contoured pressing block corresponding to the upper end surface of the workpiece is provided on the lower pressing plate. The floating middle support plate is connected to the lower pressing plate through a second floating support, and a plurality of clamping assemblies for clamping the workpiece are provided on the floating middle support plate, so that the position where the workpiece is to be pressed corresponds to the floating pressure head assembly; the floating middle support plate is provided with a positioning block corresponding to the workpiece;

[0008] The cam is fixed to the bottom of the workpiece by means of a floating pressure head assembly, wherein one end of the floating pressure head assembly is fixed to the lower pressure plate, and the other end passes through the corresponding through hole on the floating middle support plate and corresponds to the position of the workpiece to be pressed; the floating pressure head assembly includes a floating pressure head, a guide sleeve, a floating core rod, a base and a floating spring, the base is fixed to the lower pressure plate, the guide sleeve is sleeved on the upper end of the base and fixedly connected to the upper end of the base, the floating core rod is arranged in the guide sleeve and is located above the base; the floating spring is arranged between the floating core rod and the base to form a floating gap; the lower end of the floating pressure head is sleeved in the guide sleeve and contacts the floating core rod, and a boss is provided at the center of the upper end of the floating pressure head for placing the water pipe joint to be pressed; the opening diameter of the upper end of the guide sleeve is smaller than the diameter of the lower end of the floating pressure head, and the diameter of the upper end of the floating core rod is smaller than the inner diameter of the guide sleeve; the guide sleeve forms a clearance fit with the lower end of the floating core rod and the upper end of the base respectively;

[0009] During operation, the water pipe joint to be pressed is placed on the boss on the upper end of the floating pressure head; the upper pressure plate is pressed downward by force, and when the upper pressure plate's contoured pressure block contacts the workpiece, it drives the workpiece and the floating middle support plate to be pressed downward together, and the workpiece begins to contact the water pipe joint placed on the upper end of the floating pressure head, and the water pipe joint floats to align with the hole position of the workpiece to be pressed. After the workpiece continues to be pressed downward, the floating core rod contacts the base, and the floating pressure head is relatively fixed, so that the water pipe joint completes the pressing operation.

[0010] Preferably, corresponding end surfaces of the floating core rod and the base are provided with grooves for placing corresponding floating springs.

[0011] Preferably, the groove opening is provided with a chamfered angle.

[0012] Preferably, the guide sleeve and the base are fixed by screws.

[0013] Preferably, the diameter of the upper end of the floating core rod is consistent with that of the lower end of the floating pressure head.

[0014] Preferably, the floating pressure head and the corresponding end surface of the floating core rod are of the same size.

[0015] Preferably, the first floating support includes a linear bearing arranged on the upper pressure plate, a guide column linearly slidingly matched with the linear bearing and connected to the lower pressure plate, and a return spring sleeved on the guide column and located between the lower pressure plate and the linear bearing. The first floating support is arranged at corresponding end angles of the upper pressure plate and the lower pressure plate.

[0016] Preferably, the upper pressing plate and the lower pressing plate are provided with limiting chains.

[0017] Preferably, the clamping assembly includes a mounting plate, a pneumatic cylinder and a clamping head. The mounting plate is installed on a floating middle support plate. One end of the pneumatic cylinder is fixed on the mounting plate, and the other end of the pneumatic cylinder is connected to the clamping head by driving the clamping head to rotate so that the clamping head presses the workpiece.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention sets up a three-stage floating structure, so that the workpiece and the water pipe interface can be installed accurately and efficiently during the pressing process, overcoming the existing problems such as inaccurate positioning and shaking during the pressing process; the installation-free process saves 30 minutes to 1 hour compared to before the improvement; the pressing head adopts a floating design to ensure automatic correction of position deviations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a front view of the present invention;

[0022] Figure 3 yes Figure 2 Medium AA view;

[0023] Figure 4 Schematic diagram of the floating pressure head assembly structure;

[0024] Figure 5 It is a rear view of the present invention.

[0025] In the accompanying drawings, 1-upper pressure plate, 2-lower pressure plate, 3-first floating support, 4-floating middle support plate, 5-second floating support, 6-workpiece, 7-floating pressure head assembly, 8-limiting chain, 9-profile pressure block, 10-linear bearing, 11-guide column, 12-return spring, 13-mounting plate, 14-pneumatic cylinder, 15-clamping head, 16-water pipe joint;

[0026] 71- floating pressure head, 72- guide sleeve, 73- floating core rod, 74- base, 75- floating spring. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top", "bottom", "top surface", "bottom surface", "inside", "outside", "inside", "outside" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0029] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The terms "first," "second," and "third" are used solely for descriptive purposes and to distinguish technical features. They are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. The following describes an embodiment of the present invention based on its overall structure.

[0031] like Figure 1-5 The illustrated embodiment discloses a three-section floating integrated press-fitting tool, which specifically includes: a device body, a floating middle support plate 4 and a floating pressure head assembly 7, as well as a water pipe joint 16 to be press-fitted and a workpiece 6 for press-fitting the water pipe joint 16.

[0032] Here, the device body includes an upper pressing plate 1 and a lower pressing plate 2, and a first floating support 3 is provided between the upper pressing plate 1 and the lower pressing plate 2;

[0033] Here, a floating middle support plate 4 for placing the workpiece 6 is provided on the lower platen 2, and a contoured pressing block 9 corresponding to the upper end surface of the workpiece 6 is provided on the lower end surface of the upper platen 1. The floating middle support plate 4 is connected to the lower platen 2 via a second floating support 5, and is provided with multiple clamping assemblies for clamping the workpiece 6, so that the workpiece 6 to be pressed corresponds to the floating pressure head assembly 7. The floating middle support plate 4 is provided with a positioning block corresponding to the workpiece 6.

[0034] Here Figure 3-4 As shown, one end of the floating pressure head assembly 7 is fixed to the lower pressure plate 2, and the other end passes through the corresponding through hole on the floating middle support plate 4 and corresponds to the position of the workpiece 6 to be pressed. The floating pressure head assembly 7 includes a floating pressure head 71, a guide sleeve 72, a floating core rod 73, a base 74 and a floating spring 75. The base 74 is fixed to the lower pressure plate 2, the guide sleeve 72 is sleeved on the upper end of the base 74 and fixedly connected to the upper end of the base 74, and the floating core rod 73 is arranged in the guide sleeve 72 and located above the base 74. The floating spring 75 is arranged between the floating core rod 73 and the base 74 to form a floating gap. The lower end of the floating pressure head 71 is sleeved in the guide sleeve 72 and contacts the floating core rod 73. A boss is provided at the center of the upper end of the floating pressure head 71 for placing the water pipe joint 16 to be pressed. The guide sleeve 72 and the base 74 are fixed by screws to facilitate maintenance and disassembly.

[0035] The diameter of the upper opening of the guide sleeve 72 is smaller than the lower diameter of the floating ram 71, and the upper diameter of the floating core rod 73 is smaller than the inner diameter of the guide sleeve 72. The guide sleeve 72 forms a clearance fit with the lower end of the floating core rod 73 and the upper end of the base 74, respectively. The corresponding end surfaces of the floating ram 71 and the floating core rod 73 are identical in size. The upper end of the floating core rod 73 and the lower end of the floating ram 71 have the same diameter.

[0036] In order to better realize the expansion after floating positioning, the corresponding end faces of the floating core rod 73 and the base 74 are provided with grooves for placing the corresponding floating springs 75; the groove openings are provided with chamfered angles; to avoid the groove openings restricting the movement of the floating springs 75; so that the floating core rod 73 and the base 74 can fit together accordingly, and the floating pressure head 71 is fixed after floating positioning, thereby realizing the pipe expansion operation.

[0037] Preferably, the first floating support 3 includes a linear bearing 10 arranged on the upper pressure plate 1, a guide column 11 that linearly slides with the linear bearing 10 and is connected to the lower pressure plate 2, and a return spring 12 that is sleeved on the guide column 11 and located between the lower pressure plate 2 and the linear bearing 10. The first floating support 3 is arranged at the corresponding end angles of the upper pressure plate 1 and the lower pressure plate 2.

[0038] Preferably, the upper pressing plate 1 and the lower pressing plate 2 are provided with a limiting chain 8 .

[0039] Preferably, the clamping assembly includes a mounting plate 13, a pneumatic cylinder 14 and a clamping head 15. The mounting plate 13 is installed on the floating middle support plate 4. One end of the pneumatic cylinder 14 is fixed on the mounting plate 13, and the other end of the pneumatic cylinder is connected to the clamping head 15 by driving the clamping head 15 to rotate so that the clamping head 15 presses the workpiece 6.

[0040] The operation process of the above embodiment includes:

[0041] When in use, this embodiment is installed on the workbench of the pneumatic press and fixed. Then, the water inlet pipe joint 16 is first placed on the boss at the upper end of the floating pressure head 71 for positioning and installation. The boss and the water pipe joint 16 are in a clearance fit. Start the pneumatic press, and the upper pressure plate 1 is pressed downward by the force of the pneumatic press. When the contoured pressure block 9 of the upper pressure plate 1 contacts the workpiece 6, it drives the workpiece 6 and the floating middle support plate 4 to be pressed downward together; then, the workpiece 6 begins to contact the water pipe joint 16 placed on the upper end of the floating pressure head 71. The water pipe joint 16 realizes floating positioning of the hole position of the workpiece 6 to be pressed through the floating pressure head assembly 7, so that the water pipe joint 16 floats and aligns with the hole position of the workpiece 6 to be pressed. After the workpiece 6 continues to be pressed downward, the floating core rod 73 contacts the base 74, and the floating pressure head 71 is relatively fixed, so that the water pipe joint 16 completes the pressing operation. Restore the pneumatic press, and move the upper pressure plate 1 up to the initial position.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of the patent application of the present invention. Any equivalent changes, equivalent replacements or modified changes within the technical spirit and principles suggested by the present invention should be included in the scope of patent protection covered by the present invention.

Claims

1. A three-stage floating integrated press-fitting fixture for irregular aluminum workpieces with large cavities, comprising a device body comprising an upper pressing plate and a lower pressing plate, with a first floating support provided between the upper pressing plate and the lower pressing plate, characterized in that: A floating middle support plate is provided on the lower pressing plate for placing the workpiece, and a contoured pressing block corresponding to the upper end surface of the workpiece is provided on the lower pressing plate. The floating middle support plate is connected to the lower pressing plate through a second floating support, and a plurality of clamping assemblies for clamping the workpiece are provided on the floating middle support plate, so that the position where the workpiece is to be pressed corresponds to the floating pressure head assembly; the floating middle support plate is provided with a positioning block corresponding to the workpiece; The cam is fixed to the lower pressing plate, and the other end passes through the corresponding through hole of the floating middle support plate and corresponds to the position of the workpiece to be pressed; the floating pressure head assembly includes a floating pressure head, a guide sleeve, a floating core rod, a base and a floating spring, the base is fixed to the lower pressing plate, the guide sleeve is sleeved on the upper end of the base and fixedly connected to the upper end of the base, the floating core rod is arranged in the guide sleeve and is located above the base; the floating spring is arranged between the floating core rod and the base to form a floating gap; the lower end of the floating pressure head is sleeved in the guide sleeve and contacts the floating core rod, and the center of the upper end of the floating pressure head is provided with a boss for placing the water pipe joint to be pressed; the opening diameter of the upper end of the guide sleeve is smaller than the diameter of the lower end of the floating pressure head, and the diameter of the upper end of the floating core rod is smaller than the inner diameter of the guide sleeve; the guide sleeve forms a clearance fit with the lower end of the floating core rod and the upper end of the base respectively; the corresponding end surfaces of the floating core rod and the base are provided with grooves corresponding to the placement of the floating spring; the upper end of the floating core rod has the same diameter as the lower end of the floating pressure head; During operation, the water pipe joint to be pressed is placed on the boss on the upper end of the floating pressure head; the upper pressure plate is pressed downward by force, and when the upper pressure plate's contoured pressure block contacts the workpiece, it drives the workpiece and the floating middle support plate to be pressed downward together, and the workpiece begins to contact the water pipe joint placed on the upper end of the floating pressure head. The water pipe joint realizes floating positioning of the hole position of the workpiece to be pressed through the floating pressure head assembly, so that the water pipe joint floats and aligns with the hole position of the workpiece to be pressed. After the workpiece continues to be pressed downward, the floating core rod contacts the base, and the floating pressure head is relatively fixed, so that the water pipe joint completes the pressing operation.

2. The three-stage floating integrated press-fitting tool according to claim 1, characterized in that: The groove opening is provided with a chamfered angle.

3. The three-stage floating integrated press-fitting tool according to claim 1, characterized in that: The guide sleeve and the base are fixed by screws.

4. The three-stage floating integrated press-fitting tool according to claim 1, characterized in that: The floating pressure head and the corresponding end surface of the floating core rod are the same in size.

5. The three-stage floating integrated press-fitting tool according to claim 1, characterized in that: The first floating support includes a linear bearing arranged on the upper pressure plate, a guide column linearly slidingly matched with the linear bearing and connected to the lower pressure plate, and a return spring sleeved on the guide column and located between the lower pressure plate and the linear bearing. The first floating support is arranged at corresponding end angles of the upper pressure plate and the lower pressure plate.

6. The three-stage floating integrated press-fitting tool according to claim 1, characterized in that: The upper pressing plate and the lower pressing plate are provided with limiting chains.

7. The three-stage floating integrated press-fitting tool according to claim 1, characterized in that: The clamping assembly includes a mounting plate, a pneumatic cylinder and a clamping head. The mounting plate is installed on the floating middle support plate. One end of the pneumatic cylinder is fixed on the mounting plate, and the other end of the pneumatic cylinder is connected to the clamping head by a pneumatic rod. The clamping head is driven to rotate so that the clamping head presses the workpiece.

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