Rear support inner hole grinding device

Abstract

The utility model discloses a grinding machining device for an inner hole of a rear support. The grinding machining device comprises a rotating disc, a positioning core rod, a chuck, an adjusting plate, a fixing plate, a transverse adjusting assembly and a vertical adjusting assembly. A mounting hole is formed in the center of the turntable; the positioning core rod is arranged in the mounting hole in a penetrating manner; the chuck is connected with the turntable and located on the side, away from the workpiece, of the turntable. One end of the positioning core rod is connected with the chuck, and the other end is attached to a workpiece inner hole for positioning; a transverse adjusting hole is formed in the surface of the adjusting plate, and a connecting piece connected with the rotating disc penetrates through the transverse adjusting hole; a vertical adjusting hole is formed in the surface of the fixing plate, and a connecting piece connected with the adjusting plate is arranged in the vertical adjusting hole in a penetrating mode. The transverse adjusting assembly is connected with the rotating disc, located in the transverse direction of the adjusting plate, connected with the adjusting plate and drives the adjusting plate to move in the transverse direction. The vertical adjusting assembly is connected with the adjusting plate and located in the vertical direction of the fixing plate, and the vertical adjusting assembly is connected with the fixing plate and drives the fixing plate to move in the vertical direction. The grinding machining device can improve the clamping efficiency and the alignment efficiency.

Description

A rear bracket inner hole grinding device Technical Field

[0001] This utility model relates to the field of rear bracket grinding technology, and more specifically to a rear bracket inner hole grinding device. Background Technology

[0002] The rear support bracket is a crucial component in the aerospace industry, primarily used to secure the rear intersection of the tail boom and droopy shaft of an aircraft, ensuring the droopy shaft functions properly. However, during long-term operation, the φ60 inner bore of the rear support bracket may wear out and become out of tolerance, rendering it ineffective in securing the droopy shaft. To meet the functional and application requirements of the product, the inner bore of the rear support bracket needs to be re-machined to ensure dimensional accuracy and concentricity with the coaxial hole, thereby guaranteeing reliable fixation and flexible operation of the droopy shaft.

[0003] In existing technologies, the machining of the inner hole of the rear bracket typically employs a traditional clamping method, namely, clamping using an on-site faceplate fixture. The specific operation involves: selecting the installation position based on the product structure, installing the fixing plate through the T-slot on the faceplate, and then mounting the product onto the fixing plate. The alignment method mainly involves loosening the fixing plate mounting screws and the product mounting screws, drilling a φ60 inner hole with a dial indicator, and manually tapping the product to induce radial or lateral displacement based on the measured deviation. This process is repeated until the product is clamped and aligned.

[0004] However, this traditional clamping and alignment method has the following main problems:

[0005] The tooling structure is too heavy: the flower plate tooling structure is relatively bulky, requiring multiple people to cooperate in the clamping process, resulting in low work efficiency.

[0006] Repeated disassembly and installation issues: Since the rear bracket product structure has two symmetrical forms, when it is necessary to replace the symmetrical rear bracket, the original product fixing plate must be removed and then a suitable T-slot must be selected on the flower plate tooling to reinstall the fixing plate. This process seriously affects production efficiency.

[0007] Low alignment efficiency: Traditional alignment methods rely on manually tapping the fixing plate and the product to achieve radial and lateral adjustments. Because the force of manual operation is difficult to control precisely, the product displacement may be too large or too small, making it impossible to effectively adjust the deviation. This results in low alignment efficiency, which in turn prolongs the product processing cycle and makes it impossible to guarantee the delivery cycle.

[0008] Therefore, developing a grinding device for the inner hole of the rear support that can improve clamping and alignment efficiency is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0009] In view of this, the present invention provides a rear bracket inner hole grinding device that can improve clamping efficiency and alignment efficiency.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] A rear support inner hole grinding apparatus, comprising:

[0012] A turntable, wherein a mounting hole is provided at the center of the turntable;

[0013] A positioning mandrel, which passes through the mounting hole;

[0014] A chuck is connected to the turntable and is located on the side of the turntable away from the workpiece; one end of the positioning mandrel is connected to the chuck, and the other end is fitted and positioned against the inner hole of the workpiece.

[0015] An adjusting plate, wherein a horizontal adjusting hole is provided on the surface of the adjusting plate, and a connecting piece that is connected to the turntable passes through the horizontal adjusting hole;

[0016] A fixing plate, wherein a vertical adjustment hole is provided on the surface of the fixing plate, and a connector connected to the adjustment plate passes through the vertical adjustment hole;

[0017] A lateral adjustment component is connected to the turntable and located in the lateral direction of the adjustment plate. The lateral adjustment component is connected to the adjustment plate and drives the adjustment plate to move laterally.

[0018] A vertical adjustment component is connected to the adjustment plate and located in the vertical direction of the fixed plate. The vertical adjustment component is connected to the fixed plate and drives the fixed plate to move vertically.

[0019] The above technical solution has the following advantages: through the cooperation of the turntable, positioning mandrel, chuck, adjusting plate, fixing plate, and horizontal and vertical adjusting components, it achieves rapid clamping and precise positioning of the workpiece, which can effectively improve clamping efficiency and alignment efficiency, and solve the problem of low efficiency in traditional clamping methods.

[0020] Preferably, the adjusting plate, fixing plate, horizontal adjusting component, and vertical adjusting component are symmetrically distributed in two sets along the diameter of the turntable. This symmetrical design eliminates the need to disassemble and reinstall the fixing plate during replacement and maintenance of the symmetrical support, avoiding time wastage caused by fixing plate disassembly and reassembly, and further improving product installation efficiency.

[0021] Preferably, one end of the positioning mandrel connected to the workpiece is an outwardly expanding cone shape, and the other end is provided with a connecting post that extends into the interior of the chuck and connects to the chuck. The cone-shaped end can fit tightly against the inner hole of the workpiece, achieving precise positioning of the workpiece, ensuring the stability of the workpiece during processing, and improving processing accuracy.

[0022] Preferably, the fixing plate is L-shaped, with its short side connected to the adjusting plate and its long side connected to the workpiece; a weight-reducing hole is provided on the long side of the fixing plate. This structural design allows the fixing plate to better adapt to the shape of the workpiece and installation requirements, providing more stable support. Simultaneously, the weight-reducing hole on the long side effectively reduces the weight of the tooling while ensuring the strength of the fixing plate, meeting the needs of single-person clamping operation, further improving tooling clamping efficiency and reducing labor intensity.

[0023] Preferably, the lateral adjustment assembly includes a lateral adjustment block and a lateral adjustment bolt; the lateral adjustment block is connected to the turntable, and a lateral through hole is provided on one side of the lateral end face of the lateral adjustment block corresponding to the lateral end face of the adjustment plate; the lateral adjustment bolt passes through the lateral through hole and is connected to the adjustment plate. This structural design allows the lateral adjustment assembly to drive the adjustment plate to move laterally by rotating the lateral adjustment bolt, realizing fine-tuning of the workpiece laterally. The operation is simple and convenient, the adjustment accuracy is high, and the efficiency and accuracy of workpiece clamping and alignment are further improved.

[0024] Preferably, the adjusting plate is provided with a transverse threaded hole at the position corresponding to the transverse adjusting bolt, and the transverse adjusting bolt is connected to the transverse threaded hole.

[0025] Preferably, the lateral adjustment assembly further includes a lateral limiting block connected to the lateral adjustment block; the lateral limiting block has a lateral countersunk hole at a position corresponding to the lateral adjustment bolt, and the bolt head of the lateral adjustment bolt is confined within the lateral countersunk hole. The lateral limiting block limits the lateral adjustment bolt, preventing it from loosening or excessively rotating during adjustment, thereby ensuring the accuracy and stability of the lateral adjustment and further improving the reliability of workpiece clamping and alignment.

[0026] Preferably, the vertical adjustment assembly includes a vertical adjustment block and a vertical adjustment bolt; the vertical adjustment block is connected to the fixed plate, and a vertical through hole is provided on one side of the vertical adjustment block corresponding to the vertical end face of the fixed plate; the vertical adjustment bolt passes through the vertical through hole and is connected to the fixed plate. This structural design allows the vertical adjustment assembly to drive the fixed plate to move vertically by rotating the vertical adjustment bolt, realizing vertical fine adjustment of the workpiece. It is simple and convenient to operate, has high adjustment accuracy, and further improves the efficiency and accuracy of workpiece clamping and alignment.

[0027] Preferably, the fixing plate is provided with a vertical threaded hole at the position corresponding to the vertical adjusting bolt, and the vertical adjusting bolt is connected to the vertical threaded hole.

[0028] Preferably, the vertical adjustment assembly further includes a vertical limiting block connected to the vertical adjustment block; the vertical limiting block has a vertical countersunk hole at a position corresponding to the vertical adjustment bolt, and the bolt head of the vertical adjustment bolt is confined within the vertical countersunk hole. The vertical limiting block limits the vertical adjustment bolt, preventing it from loosening or excessively rotating during adjustment, thereby ensuring the accuracy and stability of vertical adjustment and further improving the reliability of workpiece clamping and alignment.

[0029] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a rear bracket inner hole grinding device, the beneficial effects of which are:

[0030] (1) By combining the turntable, adjusting plate, fixing plate and horizontal and vertical adjusting components, the workpiece can be quickly clamped and accurately positioned, avoiding the tedious operations of traditional clamping methods such as multiple people working together, repeatedly disassembling and installing fixing plates and manually hammering workpieces, which greatly shortens the clamping time and improves production efficiency.

[0031] (2) The setting of the horizontal adjustment component and the vertical adjustment component enables the workpiece to be finely adjusted radially and laterally after clamping by adjusting bolts. The adjustment accuracy is high, the operation is simple and convenient, and the workpiece alignment can be completed quickly and accurately, which improves the processing accuracy and quality and shortens the processing cycle.

[0032] (3) The symmetrically distributed adjustment plate, fixing plate and other component design enables the device to adapt to the processing requirements of different structure back supports, without the need to frequently change tooling due to changes in product structure, which improves the versatility and flexibility of the device and reduces production costs. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0034] Figure 1 is a schematic diagram of the structure of the grinding device with a workpiece clamped in this utility model.

[0035] Figure 2 is a schematic diagram of the grinding device provided by this utility model.

[0036] Figure 3 is a side view of the grinding apparatus provided by this utility model;

[0037] Figure 4 is a schematic diagram of the positioning mandrel provided by this utility model.

[0038] Figure 5 is a schematic diagram of the structure of the clamp provided by this utility model;

[0039] Figure 6 is an internal sectional view of the clamp provided by this utility model;

[0040] Figure 7 is a schematic diagram of the structure of the adjustment plate provided by this utility model;

[0041] Figure 8 is a schematic diagram of the structure of the fixing plate provided by this utility model;

[0042] Figure 9 is a schematic diagram of the structure of the lateral adjustment block provided by this utility model;

[0043] Figure 10 is a schematic diagram of the structure of the transverse limiting block provided by this utility model;

[0044] Figure 11 is a cross-sectional view of the structure at CC in Figure 10 provided by this utility model;

[0045] Figure 12 is a schematic diagram of the structure of the vertical limiting block provided by this utility model;

[0046] Figure 13 is a cross-sectional view of the structure at point AA in Figure 12 provided by this utility model;

[0047] Figure 14 is a cross-sectional view of the structure at BB in Figure 12 provided by this utility model;

[0048] Figure 15 is a schematic diagram of the structure of the vertical adjustment block provided by this utility model.

[0049] In the figure,

[0050] 1- Turntable;

[0051] 11-Mounting holes;

[0052] 2-Positioning mandrel;

[0053] 21-Connecting post;

[0054] 3-Clamp;

[0055] 4-Adjusting plate;

[0056] 41- Lateral adjustment hole; 42- Lateral threaded hole;

[0057] 5-Fixing plate;

[0058] 51-Vertical adjustment hole; 52-Vertical threaded hole; 53-Weight reduction hole;

[0059] 6- Lateral adjustment component;

[0060] 61- Lateral adjusting block; 62- Lateral adjusting bolt; 63- Lateral through hole; 64- Lateral limiting block; 65- Lateral countersunk hole;

[0061] 7-Vertical adjustment component;

[0062] 71-Vertical adjusting block; 72-Vertical adjusting bolt; 73-Vertical through hole; 74-Vertical limiting block; 75-Vertical countersunk hole;

[0063] 8-Workpiece. Detailed Implementation

[0064] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0065] This utility model discloses a rear bracket inner hole grinding device, including:

[0066] Turntable 1, with a mounting hole 11 at its center;

[0067] Positioning core rod 2, the positioning core rod 2 is inserted into the mounting hole 11;

[0068] The chuck 3 is connected to the turntable 1 and is located on the side of the turntable 1 away from the workpiece; one end of the positioning mandrel 2 is connected to the chuck 3, and the other end is fitted and positioned against the inner hole of the workpiece 8.

[0069] Adjustment plate 4, the surface of adjustment plate 4 is provided with a horizontal adjustment hole 41, and a connector connected to turntable 1 is inserted into the horizontal adjustment hole 41;

[0070] The fixing plate 5 has a vertical adjustment hole 51 on its surface, and a connector that is connected to the adjustment plate 4 passes through the vertical adjustment hole 51.

[0071] The horizontal adjustment component 6 is connected to the turntable 1 and is located in the horizontal direction of the adjustment plate 4. The horizontal adjustment component 6 is connected to the adjustment plate 4 and drives the adjustment plate 4 to move horizontally.

[0072] Vertical adjustment component 7 is connected to adjustment plate 4 and located in the vertical direction of fixed plate 5. Vertical adjustment component 7 is connected to fixed plate 5 and drives fixed plate 5 to move vertically. Radial and lateral adjustment components are added to turntable 1. Radial and lateral fine adjustment of workpiece 8 can be achieved by using lateral adjustment bolt 62 and vertical adjustment bolt 72, which can effectively improve the alignment efficiency of workpiece 8.

[0073] To further optimize the above technical solution, the horizontal adjustment hole 41 and the vertical adjustment hole 51 are oblong holes, and the connecting parts are bolts.

[0074] To further optimize the above technical solution, the perpendicularity of the axis of mounting hole 11 to the end face of turntable 1 is required to be 0.02mm, and the parallelism of the two end faces of turntable 1 is required to be 0.02mm.

[0075] To further optimize the above technical solution, two sets of adjusting plates 4, fixing plates 5, horizontal adjusting components 6, and vertical adjusting components 7 are symmetrically distributed along the diameter of the turntable 1. Two fixing plates 5 are symmetrically installed on the turntable 1. This symmetrical arrangement avoids the need for disassembly and reinstallation of the fixing plates 5 during bracket replacement and maintenance, effectively improving product installation efficiency.

[0076] To further optimize the above technical solution, one end of the positioning mandrel 2 connected to the workpiece 8 is an outwardly expanding cone shape, and the other end is provided with a connecting post 21 that extends into the interior of the chuck 3 and connects to the chuck 3. The cone-shaped end of the positioning mandrel 2 fits against the inner hole of the workpiece 8, effectively positioning the workpiece 8.

[0077] To further optimize the above technical solution, the fixing plate 5 is L-shaped, with its short side connected to the adjusting plate 4 and its long side connected to the workpiece 8; a weight-reducing hole 53 is provided on the long side of the fixing plate 5. The weight-reducing hole 53 reduces the weight of the tooling, allowing for one-person clamping operation and effectively improving the tooling clamping efficiency.

[0078] To further optimize the above technical solution, the lateral adjustment component 6 includes: a lateral adjustment block 61 and a lateral adjustment bolt 62; the lateral adjustment block 61 is connected to the turntable 1, and a lateral through hole 63 is provided on one side of the lateral end face of the lateral adjustment block 61 corresponding to the lateral end face of the adjustment plate 4, and the lateral adjustment bolt 62 passes through the lateral through hole 63 and is connected to the adjustment plate 4.

[0079] To further optimize the above technical solution, a transverse threaded hole 42 is provided at the position corresponding to the transverse adjusting bolt 62 of the adjusting plate 4, and the transverse adjusting bolt 62 is connected in the transverse threaded hole 42.

[0080] To further optimize the above technical solution, the lateral adjustment assembly 6 also includes a lateral limiting block 64, which is connected to the lateral adjustment block 61. A lateral countersunk hole 65 is provided at the position corresponding to the lateral adjustment bolt 62 on the lateral limiting block 64, and the bolt head of the lateral adjustment bolt 62 is confined within the lateral countersunk hole 65. The lateral limiting block 64 is used to limit the lateral adjustment bolt 62 to achieve lateral adjustment for clamping and aligning the workpiece 8.

[0081] To further optimize the above technical solution, the vertical adjustment component 7 includes: a vertical adjustment block 71 and a vertical adjustment bolt 72; the vertical adjustment block 71 is connected to the fixing plate 5, and a vertical through hole 73 is provided on one side of the vertical end face of the vertical adjustment block 71 and the fixing plate 5, and the vertical adjustment bolt 72 passes through the vertical through hole 73 and is connected to the fixing plate 5.

[0082] To further optimize the above technical solution, a vertical threaded hole 52 is provided at the position corresponding to the vertical adjusting bolt 72 on the fixing plate 5, and the vertical adjusting bolt 72 is connected in the vertical threaded hole 52.

[0083] To further optimize the above technical solution, the vertical adjustment assembly 7 also includes a vertical limiting block 74, which is connected to the vertical adjustment block 71. A vertical countersunk hole 75 is provided at the position corresponding to the vertical adjustment bolt 72 on the vertical limiting block 74, and the bolt head of the vertical adjustment bolt 72 is confined within the vertical countersunk hole 75. The vertical limiting block 74 is used to limit the vertical adjustment bolt 72 to achieve vertical adjustment for clamping and aligning the workpiece 8.

[0084] Clamping process:

[0085] According to the structure of the rear bracket to be repaired, the workpiece 8 is installed on the corresponding fixed plate 5. The fastening bolts of the adjusting plate 4 and the fixed plate 5 are loosened. The rear bracket is initially positioned by the positioning mandrel 2. Then the positioning mandrel 2 is removed. The workpiece 8 is rotated manually. The inner hole is repaired by dial indicator. The vertical adjusting bolt 72 and the horizontal adjusting bolt 62 are adjusted appropriately according to the deviation value of the dial indicator to achieve radial and horizontal fine adjustment of the workpiece 8, so as to improve the clamping and alignment efficiency of the workpiece 8. Then the inner hole is ground, and finally the inner hole of the bracket is ground.

[0086] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the method section.

[0087] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A grinding apparatus for the inner hole of a rear support, characterized in that, The device includes: a turntable with a mounting hole at its center; a positioning mandrel that passes through the mounting hole; a chuck connected to the turntable and located on the side of the turntable away from the workpiece; one end of the positioning mandrel is connected to the chuck, and the other end is fitted and positioned against the inner hole of the workpiece; an adjusting plate with a horizontal adjusting hole on its surface, through which a connector connected to the turntable passes; a fixed plate with a vertical adjusting hole on its surface, through which a connector connected to the adjusting plate passes; a horizontal adjusting assembly connected to the turntable and located in the horizontal direction of the adjusting plate, which drives the adjusting plate to move horizontally; and a vertical adjusting assembly connected to the adjusting plate and located in the vertical direction of the fixed plate, which drives the fixed plate to move vertically.

2. The rear support inner hole grinding device according to claim 1, characterized in that, The adjusting plate, the fixing plate, the horizontal adjusting component, and the vertical adjusting component are symmetrically distributed in two sets along the diameter of the turntable.

3. The rear support inner hole grinding device according to claim 1, characterized in that, The positioning mandrel has an externally expanding cone shape at one end that connects to the workpiece, and a connecting post at the other end that extends into the inside of the chuck and connects to the chuck.

4. The rear support inner hole grinding device according to claim 2, characterized in that, The fixing plate is L-shaped, with its short side connected to the adjusting plate and its long side connected to the workpiece; the long side of the fixing plate has a weight reduction hole.

5. The rear support inner hole grinding apparatus according to claim 1, characterized in that, The lateral adjustment assembly includes: a lateral adjustment block and a lateral adjustment bolt; the lateral adjustment block is connected to the turntable, and a lateral through hole is provided on one side of the lateral end face of the lateral adjustment block corresponding to the lateral end face of the adjustment plate; the lateral adjustment bolt passes through the lateral through hole and is connected to the adjustment plate.

6. The rear support inner hole grinding apparatus according to claim 5, characterized in that, The adjusting plate is provided with a transverse threaded hole at the position corresponding to the transverse adjusting bolt, and the transverse adjusting bolt is connected to the transverse threaded hole.

7. The rear support inner hole grinding apparatus according to claim 5, characterized in that, The lateral adjustment assembly further includes a lateral limiting block, which is connected to the lateral adjustment block; the lateral limiting block is provided with a lateral countersunk hole at the position corresponding to the lateral adjustment bolt, and the bolt head of the lateral adjustment bolt is confined within the lateral countersunk hole.

8. The rear support inner hole grinding apparatus according to claim 1, characterized in that, The vertical adjustment assembly includes a vertical adjustment block and a vertical adjustment bolt; the vertical adjustment block is connected to the fixed plate, and a vertical through hole is provided on one side of the vertical end face of the vertical adjustment block corresponding to the fixed plate; the vertical adjustment bolt passes through the vertical through hole and is connected to the fixed plate.

9. The rear support inner hole grinding apparatus according to claim 8, characterized in that, The fixing plate is provided with a vertical threaded hole at the position corresponding to the vertical adjusting bolt, and the vertical adjusting bolt is connected to the vertical threaded hole.

10. The rear bracket inner hole grinding apparatus according to claim 8, characterized in that, The vertical adjustment assembly further includes a vertical limiting block, which is connected to the vertical adjustment block; the vertical limiting block is provided with a vertical countersunk hole at the position corresponding to the vertical adjustment bolt, and the bolt head of the vertical adjustment bolt is confined within the vertical countersunk hole.

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