A hydraulic valve core inner bore adjustable fine rolling tool

Abstract

A precision rolling tool with adjustable inner bore for hydraulic valve cores is disclosed. This utility model relates to the field of valve core processing technology. A connecting frame is mounted on a rolling head with a rounded mounting groove. Rollers are rotatably mounted within the connecting frame via bearings. A mounting plate is abutted against one side wall of the connecting frame. A bidirectional lead screw is rotatably mounted within the rolling head via bearings. Two movable blocks are rotatably mounted on the bidirectional lead screw via threads. Two trapezoidal blocks of type two are fixedly mounted on the four sides of each movable block. Trapezoidal blocks of type one and type two are movably abutted against each other. A guide strip is movably mounted in a guide groove on trapezoidal block of type one. The connecting frame is equipped with a convenient loading and unloading mechanism connected to the mounting plate. This not only allows for adaptation and adjustment according to the size of the hydraulic valve core's inner bore but also facilitates convenient loading and unloading of the rolling components, significantly improving the tool's applicability and processing flexibility.

Description

Technical Field

[0001] This utility model relates to the field of valve core processing technology, specifically to a precision rolling tool for adjustable inner hole of hydraulic valve core. Background Technology

[0002] In the field of hydraulic valve core machining, the internal hole finishing and rolling process requires extremely high tool adaptability and operational flexibility. However, existing rolling tools generally suffer from insufficient adjustment accuracy and a limited range of adaptable internal hole sizes, making it difficult to meet the machining needs of hydraulic valve cores of different specifications. At the same time, the loading and unloading process of rolling components is cumbersome, resulting in low efficiency when changing different models of rolling components. This not only limits the applicability of the tools but also reduces the flexibility in the machining process, increases production preparation time and labor costs, and cannot well adapt to the multi-specification and high-efficiency machining requirements of modern production. Therefore, there is an urgent need for an adjustable precision rolling tool for hydraulic valve core internal holes. Utility Model Content

[0003] The purpose of this utility model is to address the defects and shortcomings of the existing technology by providing a reasonably designed hydraulic valve core inner hole adjustable fine rolling tool to solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a connecting handle and a rolling head, with the rolling head fixedly disposed at the lower end of the connecting handle;

[0005] It also includes: four connecting frames, each set in one of four mounting slots with rounded corners on the rolling head; rollers rotatably mounted inside the connecting frame via bearings; a mounting plate abutting against one side wall of the connecting frame; and trapezoidal blocks fixedly mounted at the four corners of one side wall of the mounting plate; a bidirectional lead screw, rotatably mounted inside the rolling head via bearings; an adjusting and limiting mechanism connected to the bidirectional lead screw on the rolling head; two moving blocks rotatably mounted on the bidirectional lead screw via threads; two trapezoidal blocks fixedly mounted on the four sides of each moving block; and trapezoidal blocks movably abutting against each other; and several guide strips, each fixedly mounted on several trapezoidal blocks, and movably mounted in guide slots on the trapezoidal blocks; and a convenient loading and unloading mechanism connected to the mounting plate on the connecting frame.

[0006] Furthermore, the adjusting and limiting mechanism includes: a first gear, which is fixedly sleeved on the upper end of the bidirectional lead screw, and a second gear that meshes with the first gear is rotatably arranged inside the rolling head via a rotating shaft; an internal gear ring, which is rotatably arranged in an annular groove opened on the side wall of the rolling head ring via a bearing, and the internal gear ring meshes with the second gear, and an adjusting ring is movably sleeved on the rolling head; several fixing bars, which are evenly distributed on the outer ring wall of the internal gear ring, and the fixing bars are movably arranged in a moving groove opened on the inner ring wall of the adjusting ring, and a first spring connected to the fixing bar is fixedly arranged in the moving groove; and a first limiting gear ring, which is fixedly arranged at the bottom of the adjusting ring, and a second limiting gear ring that cooperates with the first limiting gear ring is fixedly sleeved on the rolling head.

[0007] Furthermore, a guide rod is fixedly installed inside the movable groove, and the fixing bar and the first spring are both movably sleeved on the guide rod.

[0008] Furthermore, the convenient loading and unloading mechanism includes:

[0009] The mounting strip is fixedly installed on one side wall of the mounting plate, and two insert blocks are fixedly installed on one side wall of the connecting frame. The insert blocks pass through the mounting plate and are movably inserted into the mounting holes opened on the mounting strip.

[0010] A limiting rod is movably disposed within an installation strip. A polygonal block is fixedly sleeved on the limiting rod. A second spring connected to the polygonal block is fixedly disposed within the installation strip. The upper end of the limiting rod movably passes through the upper block.

[0011] The screw is inserted into the mounting strip by a threaded rotation. The upper end of the screw passes through the lower insert block and is in contact with the limiting insert rod. The bottom of the rolling head has a waist hole that matches the screw.

[0012] Furthermore, a sealing block is provided inside the waist hole, and a connecting rope connected to the waist hole is provided on the sealing block.

[0013] Furthermore, the opening of the mounting port is chamfered, and the chamfer is configured to cooperate with the insertion block.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the adjustable precision rolling tool for the inner hole of the hydraulic valve core described in this utility model can not only be adapted and adjusted according to the size of the inner hole of the hydraulic valve core, but also facilitates the convenient loading and unloading of the rolling components, significantly improving the tool's applicability and processing flexibility. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2This is a cross-sectional view of the rolling head and adjusting ring in this utility model.

[0017] Figure 3 yes Figure 2 Enlarged view of part A in the image.

[0018] Figure 4 yes Figure 2 Enlarged view of part B in the image.

[0019] Figure 5 This is an exploded view of the connecting frame, rollers, mounting plate, trapezoidal block No. 1, and trapezoidal block No. 2 in this utility model.

[0020] Figure 6 yes Figure 5 Enlarged view of section C in the image.

[0021] Figure 7 This is a cross-sectional view of the mounting strip in this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Connecting handle; 2. Rolling head; 3. Connecting frame; 4. Mounting groove; 5. Roller; 6. Mounting plate; 7. Trapezoidal block No. 1; 8. Bidirectional lead screw; 9. Adjustment and limiting mechanism; 9. Gear No. 1; 9. Gear No. 2; 9. Internal gear ring; 9. Annular groove; 9. Adjusting ring; 9. Fixed strip; 9. Moving groove; 9. Spring No. 1; 9. Limiting gear ring No. 1; 9. Limiting gear ring No. 2; 9. Moving block; 10. Trapezoidal block No. 2; 11. Guide strip; 12. Guide groove; 13. Convenient loading and unloading mechanism; 14. Mounting strip; 14. Insertion block; 14. Limiting insertion rod; 14. Polygonal block; 14. Spring No. 2; 14. Screw; 14. Waist hole; 14. Guide rod; 15. Sealing block; 16. Connecting rope; 17. Chamfer; 18. Detailed Implementation

[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] like Figures 1-7 As shown, the specific embodiment adopts the following technical solution: it includes a connecting handle 1 and a rolling head 2, and the lower end of the connecting handle 1 is fixedly provided with the rolling head 2;

[0025] It also includes:

[0026] Connecting frame 3, there are four connecting frames 3, which are respectively set in four mounting slots 4 with equal rounded corners on the rolling head 2. Rollers 5 are rotatably installed in the connecting frame 3 through bearings. A mounting plate 6 is abutted on one side wall of the connecting frame 3. A trapezoidal block 7 is fixedly installed at each of the four corners of one side wall of the mounting plate 6.

[0027] A bidirectional lead screw 8 is rotatably mounted inside a rolling head 2 via a bearing. The rolling head 2 is equipped with an adjustment and limiting mechanism 9 connected to the bidirectional lead screw 8. Two moving blocks 10 are rotatably mounted on the bidirectional lead screw 8 via a thread. Two trapezoidal blocks 11 are fixedly mounted on the four sides of each moving block 10. The trapezoidal block 7 and the trapezoidal block 11 are engaged in a moving and abutting arrangement.

[0028] Guide strip 12, there are several guide strips 12, which are fixedly set on several trapezoidal blocks 11 of the second type, and the guide strip 12 is movably set in the guide groove 13 opened on the trapezoidal block 7. The connecting frame 3 is provided with a convenient loading and unloading mechanism 14 connected to the mounting plate 6.

[0029] The adjusting and limiting mechanism 9 includes:

[0030] Gear 9-1 is fixedly sleeved on the upper end of the double-acting lead screw 8. Gear 9-2, which meshes with gear 9-1, is rotatably installed in the rolling head 2 through a rotating shaft.

[0031] The internal gear ring 9-3 is rotatably mounted in the annular groove 9-4 opened on the side wall of the rolling head 2 via a bearing, and the internal gear ring 9-3 is meshed with the second gear 9-2. An adjusting ring 9-5 is movably sleeved on the rolling head 2.

[0032] Fixed strips 9-6, of which there are several, are distributed with equal rounded corners on the outer ring wall of the inner gear ring 9-3. The fixed strips 9-6 are movably disposed in the moving grooves 9-7 opened on the inner ring wall of the adjusting ring 9-5. A first spring 9-8 connected to the fixed strips 9-6 is fixedly disposed in the moving grooves 9-7. A guide rod 15 is fixedly disposed in the moving grooves 9-7. Both the fixed strips 9-6 and the first spring 9-8 are movably sleeved on the guide rod 15. The guide rod 15 not only provides guidance for the fixed strips 9-6 and improves the moving stability of the fixed strips 9-6, but also prevents the first spring 9-8 from bending when compressed, thus affecting its service life.

[0033] The first limiting gear ring 9-9 is fixedly installed at the bottom of the adjusting ring 9-5. The second limiting gear ring 9-10, which cooperates with the first limiting gear ring 9-9, is fixedly sleeved on the rolling head 2. The adjusting limiting mechanism 9 can not only control the rotation of the bidirectional lead screw 8 to realize the adjustment of the position of the roller 5 to adapt to hydraulic valve cores with different sizes of inner holes, but also limit the bidirectional lead screw 8 during the processing to avoid the phenomenon of roller 5 displacement.

[0034] The convenient loading and unloading mechanism 14 includes:

[0035] Mounting strip 14-1 is fixedly mounted on one side wall of mounting plate 6. Two insert blocks 14-2 are fixedly mounted on one side wall of connecting bracket 3. After passing through mounting plate 6, the insert blocks 14-2 are movably inserted into the mounting opening on mounting strip 14-1. The opening of the mounting opening is provided with a chamfer 18, which is matched with the insert blocks 14-2. The chamfer 18 can provide guidance for the insert blocks 14-2 during the insertion into the mounting opening, thereby improving the ease of installation of the insert blocks 14-2.

[0036] The limiting rod 14-3 is movably disposed within the mounting strip 14-1. A polygonal block 14-4 is fixedly sleeved on the limiting rod 14-3. A second spring 14-5 connected to the polygonal block 14-4 is fixedly disposed within the mounting strip 14-1. The upper end of the limiting rod 14-3 movably passes through the upper insert block 14-2.

[0037] The screw 14-6 is inserted into the mounting strip 14-1 via a threaded rotation. The upper end of the screw 14-6 passes through the lower insert block 14-2 and is in contact with the limiting insert rod 14-3. The bottom of the rolling head 2 has a waist hole 14-7 that mates with the screw 14-6. The convenient loading and unloading mechanism 14 can conveniently limit the connection between the mounting plate 6 and the connecting frame 3, making the loading and unloading of the connecting frame 3 in the mounting groove 4 more convenient. This facilitates the easy replacement of the roller 5 according to the processing technology, reducing changeover time. A sealing block 16 is abutting inside the waist hole 14-7. A connecting rope 17 connected to the waist hole 14-7 is provided on the sealing block 16. The cooperation between the sealing block 16 and the connecting rope 17 can protect the inside of the waist hole 14-7, preventing debris from entering the rolling head 2 through the waist hole 14-7 during processing.

[0038] When using this utility model, the connecting handle 1 can be connected to the spindle of the processing machine. Then, the spindle can drive the rolling head 2 to rotate through the connecting handle 1, and the rolling head 2 and roller 5 can enter the inner hole of the hydraulic valve core to achieve rolling of the inner hole of the hydraulic valve core. When it is necessary to adjust according to the size of the inner hole of the hydraulic valve core, the adjusting ring 9-5 can be moved upward, so that the first spring 9-8 is compressed, and the adjusting ring 9-5 drives the first limiting gear ring 9-9 to move upward and disengage from the second limiting gear ring 9-10. Then the adjusting ring 9-5 can be rotated, and the adjusting ring 9-5 is connected to the fixing bar 9. -6 drives the internal gear ring 9-3 to rotate, the internal gear ring 9-3 drives the second gear 9-2 to rotate, the second gear 9-2 drives the double-acting screw 8 to rotate through the first gear 9-1, so that the moving blocks 10 on both sides move synchronously in opposite directions. The moving blocks 10 drive the second trapezoidal block 11 to move, and by utilizing the movement of the guide strip 12 in the guide groove 13, the radial movement of several first trapezoidal blocks 7 can be realized. The first trapezoidal block 7 drives the connecting frame 3 to move through the mounting plate 6, and the connecting frame 3 drives the roller 5 to move, so as to realize the adjustment of the position of the roller 5 to adapt to the processing of hydraulic valve cores with different sizes of inner holes;

[0039] If it is necessary to replace the roller 5 with a different model or material according to the processing technology, the sealing block 16 can be removed from the waist hole 14-7, and then the screw 14-6 can be turned and removed from the mounting strip 14-1. The screw 14-6 will also disengage from the lower insert block 14-2. At this time, the limiting insert rod 14-3 will disengage from the upper end of the screw 14-6, causing the second spring 14-5 to extend and push the polygonal block 14-4 downward. The polygonal block 14-4 will drive the limiting insert rod 14-3 downward, causing the limiting insert rod 14-3 to disengage from the upper insert block 14-2. Then the connecting bracket 3 can be removed from the mounting groove 4, realizing the separation of the connecting bracket 3 and the roller 5. Remove the connecting bracket 3 on the newly replaced roller 5 and press it against the mounting groove 4, inserting the insert block 14-2 into the mounting opening. Then, insert the screw 14-6 into the mounting strip 14-1, and make the upper end of the screw 14-6 pass through the lower insert block 14-2 and abut against the limiting rod 14-3. Then, turn the screw 14-6 in the opposite direction, so that the screw 14-6 connects with the mounting strip 14-1 through the thread and pushes the limiting rod 14-3 upward, so that the upper end of the limiting rod 14-3 passes through the upper insert block 14-2, and the limiting rod 14-3 drives the polygonal block 14-4 upward and compresses the second spring 14-5, thereby realizing the installation of the connecting bracket 3.

[0040] Compared with the prior art, the beneficial effects of this utility model are:

[0041] By cooperating with gear 9-1, gear 9-2, internal gear ring 9-3, double-acting screw 8 and moving block 10, and combining the wedge-shaped drive structure of trapezoidal block 7 and trapezoidal block 11, the synchronous radial precise adjustment of roller 5 can be achieved. This allows for flexible adaptation to the machining requirements of hydraulic valve core inner holes of different sizes. Moreover, the adjustment process does not require disassembling parts, making the operation convenient and efficient.

[0042] With the positioning and cooperation of the insert 14-2 and the mounting port, and the quick locking structure of the screw 14-6 and the limit insert 14-3, combined with the elastic reset function of the second spring 14-5, the connecting frame 3 and the roller 5 can be conveniently installed and removed, greatly reducing the changeover time of the roller 5.

[0043] By engaging and locking the first limiting gear ring 9-9 and the second limiting gear ring 9-10, and cooperating with the first spring 9-8, the adjusting ring 9-5 can be locked, effectively preventing the roller 5 from shifting due to vibration during the processing.

[0044] By using the sealing block 16 and the connecting rope 17 together, the inside of the waist hole 14-7 can be protected, preventing debris and other debris from entering the rolling head 2 through the waist hole 14-7 during processing.

[0045] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hydraulic spool hole adjustable fine light rolling tool, comprising a connecting handle (1) and a rolling head (2), the lower end of the connecting handle (1) is fixedly provided with the rolling head (2); characterized in that, It also includes: a connecting frame (3), of which there are four, respectively located in four mounting slots (4) with equal rounded corners on the rolling head (2), with rollers (5) rotatably mounted inside the connecting frame (3) via bearings, and a mounting plate (6) abutting against one side wall of the connecting frame (3), with trapezoidal blocks (7) fixedly mounted at each of the four corners of one side wall of the mounting plate (6); a bidirectional lead screw (8), which is rotatably mounted inside the rolling head (2) via bearings, and the rolling head (2) is provided with an adjustment and limiting mechanism (9) connected to the bidirectional lead screw (8), and the bidirectional lead screw (8) is connected to the rolling head (2). Two movable blocks (10) are mounted on the lead screw (8) via a threaded rotation. Two trapezoidal blocks (11) are fixedly mounted on the four sides of each movable block (10). The trapezoidal block (7) and the trapezoidal block (11) are engaged in a movable contact arrangement. There are several guide bars (12), which are fixedly mounted on several trapezoidal blocks (11) respectively. The guide bars (12) are movably mounted in the guide groove (13) opened on the trapezoidal block (7). The connecting frame (3) is provided with a convenient loading and unloading mechanism (14) that connects to the mounting plate (6).

2. The hydraulic spool bore adjustable finish rolling tool of claim 1, wherein: The adjusting limit mechanism (9) includes: a first gear (9-1), which is fixedly sleeved on the upper end of the double-acting screw (8); a second gear (9-2) that meshes with the first gear (9-1) is rotatably arranged inside the rolling head (2) via a rotating shaft; an internal gear ring (9-3), which is rotatably arranged in an annular groove (9-4) opened on the side wall of the rolling head (2) via a bearing, and the internal gear ring (9-3) meshes with the second gear (9-2); an adjusting ring (9-5) is movably sleeved on the rolling head (2); and a fixing strip (9 -6), there are several fixing bars (9-6), which are distributed with equal rounded corners on the outer ring wall of the inner gear ring (9-3). The fixing bars (9-6) are movably set in the moving groove (9-7) opened on the inner ring wall of the adjusting ring (9-5). A first spring (9-8) connected to the fixing bar (9-6) is fixedly set in the moving groove (9-7); a first limiting gear ring (9-9) is fixedly set at the bottom of the adjusting ring (9-5). A second limiting gear ring (9-10) that cooperates with the first limiting gear ring (9-9) is fixedly sleeved on the rolling head (2).

3. The hydraulic spool bore adjustable finish rolling tool of claim 2, wherein: A guide rod (15) is fixedly installed inside the movable groove (9-7), and the fixing strip (9-6) and the first spring (9-8) are movably sleeved on the guide rod (15).

4. The hydraulic spool bore adjustable finish rolling tool of claim 1, wherein: The convenient loading and unloading mechanism (14) includes: an installation strip (14-1), which is fixedly installed on one side wall of the mounting plate (6), and two inserts (14-2) are fixedly installed on one side wall of the connecting frame (3). The inserts (14-2) pass through the mounting plate (6) and are movably inserted into the installation opening on the installation strip (14-1); and a limiting rod (14-3), which is movably installed inside the installation strip (14-1). A polygonal block (14-4) is fixedly sleeved on the limiting rod (14-3). A second spring (14-5) connected to a polygonal block (14-4) is fixedly installed inside the mounting strip (14-1). The upper end of the limiting rod (14-3) is movably inserted into the upper insert (14-2). The screw (14-6) is inserted into the mounting strip (14-1) by thread rotation. The upper end of the screw (14-6) passes through the lower insert (14-2) and is movably abutting against the limiting rod (14-3). The bottom of the rolling head (2) is provided with a waist hole (14-7) that cooperates with the screw (14-6).

5. The hydraulic spool bore adjustable finish rolling tool of claim 4, wherein: A sealing block (16) is provided inside the waist hole (14-7), and a connecting rope (17) connected to the waist hole (14-7) is provided on the sealing block (16).

6. The hydraulic spool bore adjustable finish rolling tool of claim 4, wherein: The opening of the mounting port is provided with a chamfer (18), which is configured to cooperate with the insert block (14-2).

Images