Boring device for machining inner wall of cylinder body

Abstract

The invention provides a boring device for machining the inner wall of a cylinder body, and belongs to the technical field of boring machining.The boring device for machining the inner wall of the cylinder body comprises a cutter bar, a mounting groove is formed in the cutter bar, and a mounting block sliding in the radial direction of the cutter bar is arranged in the mounting groove; a first elastic piece used for pushing the mounting block to move towards the outside of the mounting groove is arranged in the mounting groove, a blade is mounted on the mounting block, an inclined plane is arranged on one side of the mounting block, and when the cutter bar enters the blank hole, the hole opening of the blank hole abuts against the inclined plane; the mounting block is arranged in the mounting groove in a sliding mode, the inclined face is arranged on the mounting block, when a cylinder body needs to be bored, the position of the blade can be adjusted through the inclined face, and the position of the blade can be fixed through the positioning assembly; therefore, the trouble of tool setting can be solved when cylinder bodies with different sizes are bored, and the working efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of boring processing, and in particular relates to a boring device for processing the inner wall of a cylinder. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion. During the processing and production process, in order to ensure the precise size, shape and surface quality of the internal hole of the hydraulic cylinder, it is necessary to use a boring processing device to bore the inner wall of the cylinder so that the hydraulic cylinder meets the design requirements and working performance.

[0003] The Chinese patent with authorization announcement number CN119794426A discloses a boring processing device for manufacturing a hydraulic cylinder body, comprising a base, an end of the base is fixedly connected to a limit seat, the limit seat is provided with a positioning part for clamping the hydraulic cylinder body, and also includes: a movable plate, the movable plate is mounted on the top of the base, wherein the base is provided with a driving part that drives the movable plate to move along the long side direction of the base; the present invention rotates the guide vane in the guide box to realize the water flow in the water box to be sprayed outward along the water spray hole, cools the boring tool group and the inner wall of the hydraulic cylinder, effectively reduces friction heat, improves the durability of the boring tool group, and avoids thermal deformation of the inner wall of the hydraulic cylinder, ensuring processing accuracy; and lubricates the processing surface to reduce the friction coefficient, so that the boring process is smoother, the service life of the boring tool group is extended, and the boring quality of the hydraulic cylinder body is improved.

[0004] When dealing with some blanks with a large amount of blanks, multiple rough machining and boring are required to be processed to the specified size, and then fine machining is performed. However, the boring diameter of the boring tool group of the above technical solution is fixed, and it can only bore a fixed size. It is impossible to bore the blanks of different sizes multiple times continuously, and it cannot automatically adjust according to the size of the blank holes. When boring different sizes, it is necessary to replace the tool heads of different sizes, or to re-set the tool, which is time-consuming and labor-intensive, affecting work efficiency. Summary of the Invention

[0005] The object of the present invention is to provide a boring device for machining the inner wall of a cylinder, aiming to solve the problem in the prior art that automatic adjustment according to the size of the blank hole cannot be performed.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a boring device for processing the inner wall of a cylinder, comprising: a tool rod, a mounting groove is provided on the tool rod, a mounting block sliding along the radial direction of the tool rod is provided inside the mounting groove, a first elastic member for pushing the mounting block to move outside the mounting groove is provided inside the mounting groove, a blade is installed on the mounting block, and a bevel is provided on one side of the mounting block. When the tool rod enters the inside of the blank hole, the orifice of the blank hole is abutted against the bevel, and the bevel can push the mounting block to move inside the mounting groove. A positioning assembly is provided on the tool rod, and the positioning assembly is used to fix the mounting block inside the mounting groove.

[0007] A further technical solution of the present invention is that the positioning assembly includes a sliding groove provided on the mounting block, a sliding member sliding along the axial direction of the knife rod is provided inside the sliding groove, a sliding rod is provided on one side of the sliding member, and a positioning block is provided on the end of the sliding rod away from the sliding member, a groove for sliding the positioning block is provided on the mounting block, a plurality of positioning grooves are provided on the mounting groove, and a positioning protrusion cooperating with the positioning groove is provided on the positioning block. When the sliding member moves, the positioning protrusion on the positioning block can be engaged with the positioning groove, and a second elastic member is provided in the sliding groove to keep the positioning groove away from the positioning protrusion.

[0008] A further technical solution of the present invention is that push rollers are rotatably provided on both sides of the mounting block, the rotation axis of the push rollers is located at the eccentric position of the push rollers, and the push rollers can abut against the inner side walls of the mounting groove when rotating.

[0009] A further technical solution of the present invention is that a pushing surface is provided on the pushing roller, and the pushing surface is formed by twisting a rectangular plane into a curved surface. A straight surface extends from one side of the pushing surface and is connected to the pushing surface. A receiving groove is provided on the sliding member, and a rotating shaft is rotatably provided in the receiving groove near one end of the pushing roller. The rotating shaft is in contact with the straight surface. When the sliding member slides inside the sliding groove, the rotating shaft can slide to contact the pushing surface.

[0010] A further technical solution of the present invention is that there are multiple positioning blocks and sliding rods, the positioning protrusions on the multiple positioning blocks are staggered with each other, and the sliding rod is made of flexible material, which can push the positioning block to move while also having elastic deformation.

[0011] A further technical solution of the present invention is that a flexible surface is provided on the inner side wall of the installation groove, and the push roller can contact the flexible surface when it rotates.

[0012] A further technical solution of the present invention is that the material of the flexible surface can be hard rubber with a thickness of 1 mm.

[0013] A further technical solution of the present invention is that a friction surface is provided on the outer surface of the push roller.

[0014] A further technical solution of the present invention is that the tip of the blade is higher than the topmost position of the inclined surface.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The mounting block is slidably arranged inside the mounting groove, and an inclined surface is provided on the mounting block. When boring the cylinder body, the position of the blade can be adjusted through the inclined surface, and the position of the blade can be fixed by the positioning component, thereby solving the trouble of tool alignment when boring cylinder bodies of different sizes and improving work efficiency.

[0016] 2. Since the distance between the top of the bevel and the tip of the blade is fixed, the cutting depth of each boring is fixed. Therefore, when boring a single cylinder multiple times, the problem of frequently adjusting the cutting depth is avoided.

[0017] 3. By setting the push roller, the position of the mounting block can be further fixed, and a certain distance can be created between the inclined surface and the inner wall of the cylinder body to avoid wear on the top of the inclined surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention; Figure 2 It is an axonometric cross-sectional view of a specific embodiment of the present invention; Figure 3 It is a radial cross-sectional view of a specific embodiment of the present invention; Figure 4 This is a schematic structural diagram of a positioning assembly in a specific embodiment of the present invention; Figure 5 A schematic diagram of an axial perspective of a push roller in a specific embodiment of the present invention; Figure 6 for Figure 4 A schematic diagram of the structure at center A; Figure 7 A schematic structural diagram of a knife bar in a specific embodiment of the present invention; Figure 8 A schematic structural diagram of a sliding member in a specific embodiment of the present invention; Figure 9 Schematic diagram of the installation structure of the knife bar in a specific embodiment of the present invention.

[0019] In the figure: 1. tool rod; 11. mounting groove; 12. tool holder; 13. tool head; 14. positioning groove; 2. adjustment assembly; 21. mounting block; 211. sliding groove; 22. first elastic member; 23. inclined surface; 3. positioning assembly; 31. sliding member; 32. second elastic member; 33. slide bar; 34. positioning block; 35. positioning protrusion; 4. blade; 5. avoidance assembly; 51. push roller; 52. flexible surface; 53. push surface; 54. straight surface; 55. receiving groove; 56. rotating shaft; 6. boring machine. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figures 1-9 The present invention provides the following technical solutions: a boring device for processing the inner wall of a cylinder, which is suitable for a boring environment in which the tool is fixed and the cylinder body rotates, and includes a tool rod 1, an adjusting component 2, a positioning component 3 and a boring machine 6. The tool rod 1 is installed on the boring machine 6, and a workpiece clamp is provided on the boring machine 6, which can fix the cylinder body on the clamp and make the cylinder body coaxial with the tool rod 1. Then the clamp drives the cylinder body to rotate, and the tool rod can feed into the interior of the cylinder body. The adjusting component 2 is provided on the tool rod 1, and a blade 4 is provided on the adjusting component 2. The adjusting component 2 is used to adjust the radial position of the blade 4, thereby adjusting the boring size. The positioning component 3 is installed on the tool rod 1, and is used to fix the position of the adjusting component 2 to avoid displacement of the adjusting component 2 during boring, which causes the problem of reduced accuracy.

[0022] See also Figure 1 、 Figure 2 The tool rod 1 includes a tool seat 12 and a tool head 13. A mounting groove 11 is provided on the tool head 13. One end of the mounting groove 11 has an opening. The adjustment component 2 can be installed inside the mounting groove 11 through the opening and slide inside the mounting groove 11 along the radial direction of the tool rod 1. At the same time, the sliding groove slider structure can be used to improve the stability of the adjustment component 2 sliding inside the mounting groove 11, so that the adjustment component 2 slides more smoothly inside the mounting groove 11.

[0023] The adjustment assembly 2 includes a mounting block 21 that slides inside the mounting groove 11. A first elastic member 22 is provided between the mounting block 21 and the inner bottom wall of the mounting groove 11. The first elastic member 22 is a compression spring, one end of which is fixed to the inner bottom wall of the mounting groove 11 and the other end is fixed to the mounting block 21. When the mounting block 21 moves toward the inner bottom wall of the mounting groove 11, the first elastic member 22 is compressed to store energy. A bevel 23 is provided at one end of the mounting block 21 away from the knife seat 12. The position of the end of the bevel 23 away from the knife seat 12 is closer to the inner bottom wall of the mounting groove 11 than the position of the end close to the knife seat 12, so that when boring the cylinder body when penetrating into the cylinder body, the orifice of the cylinder body is against the bevel 23. By continuously penetrating into the interior of the cylinder body, the mounting block 21 can be pushed to slide toward the interior of the mounting groove 11 through the bevel 23, thereby driving the position of the blade 4 to be adjusted, and then the position of the mounting block 21 is fixed by the positioning assembly 3. The tip position of the blade 4 is higher than the position of the end of the bevel 23 away from the knife seat 12 by a distance, and this distance is the cutting amount of the blade 4. At this time, the cylinder body rotates, and the tool rod 1 moves toward the interior of the cylinder body, so that the blade 4 can perform boring operations on cylinder bodies of different sizes.

[0024] See also Figure 2 、 Figure 4 、 Figure 7 and Figure 8 In order to avoid radial displacement of the mounting block 21 during boring, a positioning assembly 3 is provided on the tool rod 1. The positioning assembly 3 includes a sliding member 31. A sliding groove 211 is provided on the mounting block 21. The sliding member 31 can slide in the axial direction of the tool rod 1 inside the sliding groove 211. A second elastic member 32 is provided in the sliding gap between the sliding member 31 and the sliding groove 211. The second elastic member 32 is a compression spring, one end of which is fixed to the inner side wall of the sliding groove 211 and the other end is fixed to one side of the sliding member 31, so that the second elastic member 32 pushes the sliding member 31 to move away from the tool holder 12. A spring is provided on one side of the sliding member 31 near the bottom. The sliding rod 33 has a positioning block 34 at one end of the sliding rod 33 away from the sliding member 31, and a groove for the sliding of the positioning block 34 is provided on the mounting block 21, and the opening of the groove faces the end of the mounting slot 11 close to the tool holder 12, and a plurality of transverse positioning grooves 14 are provided at the end of the mounting slot 11 close to the tool holder 12, and a positioning protrusion 35 that can be used in conjunction with the positioning groove 14 is provided on the positioning block 34. When the sliding member 31 moves in the direction close to the tool holder 12, the positioning protrusion 35 on the positioning block 34 is driven by the sliding rod 33 to engage with the positioning groove 14, thereby limiting the up and down displacement of the mounting block 21 to avoid displacement of the mounting block 21 during the boring process.

[0025] Furthermore, the positioning blocks 34 can be provided in plurality. When the plurality of positioning blocks 34 are distributed laterally, the positioning protrusions 35 on the plurality of positioning blocks 34 are staggered with each other, so that one of the positioning protrusions 35 is more easily inserted into the interior of the positioning groove 14, effectively reducing the situation in which the positioning protrusion 35 is not inserted into the interior of the positioning groove 14 during the boring process. At this time, the material of the slide bar 33 is a flexible material with a small amount of elastic deformation, specifically hard rubber. When the positioning protrusion 35 on one of the positioning blocks 34 is engaged with the positioning groove 14, the remaining positioning blocks 34 that are not inserted into the positioning groove 14 push the slide bar 33 to compress, thereby avoiding interference between the positioning blocks 34 that are not inserted into the positioning groove 14 and the positioning groove 14.

[0026] When the cylinder body is roughly bored and positioned, the position of the blade 4 is adjusted by the inclined surface 23. Specifically, the orifice of the cylinder body is against the inclined surface 23, so that the inclined surface 23 pushes the mounting block 21 to slide inside the mounting groove 11 until the end of the inclined surface 23 close to the knife seat 12 enters the inner wall of the cylinder body. At this time, under the action of the first elastic member 22, the end of the inclined surface 23 close to the knife seat 12 is always in contact with the inner wall of the cylinder body, and then continues to move toward the inside of the cylinder body, so that the cylinder body and the blade 4 are against each other. When the blade 4 pushes the sliding member 31 to move inside the sliding groove 211, the positioning protrusion 35 is engaged with the positioning groove 14, so that the position of the mounting block 21 in the mounting groove 11 can be fixed, but when boring the hole, During the boring process, since the end of the inclined surface 23 close to the knife seat 12 is always in contact with the inner wall of the cylinder body, friction will occur between the end of the inclined surface 23 close to the knife seat 12 and the inner wall of the cylinder body, which will easily cause the end of the inclined surface 23 close to the knife seat 12 to wear over a long period of time, and then easily cause the distance between the end of the inclined surface 23 close to the knife seat 12 and the tip of the blade 4 to increase, thereby affecting the cutting amount of the cylinder body each time the boring is carried out, thereby affecting the rough boring accuracy of the cylinder body. Therefore, an avoidance component 5 is provided on the mounting block 21, and the avoidance component 5 can make the mounting block 21 drop a fixed distance to avoid the end of the inclined surface 23 close to the knife seat 12 from contacting the inner wall of the cylinder body, thereby avoiding the end of the inclined surface 23 close to the knife seat 12 from wearing; See also Figure 3-Figure 6The avoidance component 5 includes a pushing roller 51 mirror-imaged on both sides of the mounting block 21. The pushing roller 51 can rotate on the mounting block 21. The cross section of the pushing roller 51 is circular, and the rotation axis is located at the eccentric position of the pushing roller 51, so that the cross section of the pushing roller 51 constitutes an eccentric wheel shape, wherein the base circle a of the pushing roller 51 faces the outside of the mounting block 21 and does not cross the plane of the side wall of the mounting block 21, so that the pushing roller 51 will not contact the side wall of the mounting groove 11 when the mounting block 21 is lifted or lowered. When the pushing roller 51 rotates, the convex tip b gradually rotates toward the outside of the mounting block 21, and causes the pushing roller 51 to gradually contact the inner wall of the mounting groove 11 In contact with each other, a flexible surface 52 is provided on the inner wall of the mounting groove 11. The material of the flexible surface 52 can be hard rubber with a thickness of 1 mm. When the pushing roller 51 rotates, it will contact and squeeze the flexible surface 52. At this time, due to the friction between the pushing roller 51 and the flexible surface 52, the pushing roller 51 will drive the mounting block 21 to move a certain distance toward the bottom of the mounting groove 11 when the pushing roller 51 rotates, so that the end of the inclined surface 23 close to the tool holder 12 is away from the inner wall of the cylinder body for a certain distance, thereby avoiding the friction between the end of the inclined surface 23 close to the tool holder 12 and the inner wall of the cylinder body for a long time, causing the end of the inclined surface 23 close to the tool holder 12 to wear.

[0027] The rotation of the pushing roller 51 will continuously squeeze the flexible surface 52 on the inner wall of the mounting groove 11, thereby continuously increasing the friction between the pushing roller 51 and the flexible surface 52. Since the flexible surface 52 is fixed on the inner wall of the mounting groove 11, the friction between the pushing roller 51 and the inner wall of the mounting groove 11 is indirectly increased, thereby further preventing the mounting block 21 from moving toward the inner bottom wall of the mounting groove 11, and avoiding the mounting block 21 from displacing toward the inner bottom wall during the boring process.

[0028] Furthermore, in order to avoid friction between the flexible surface 52 and the pushing roller 51 , a friction surface is provided on the outer surface of the pushing roller 51 to increase the friction between the pushing roller 51 and the flexible surface 52 .

[0029] See also Figure 5 and Figure 6 In order to drive the pushing roller 51 to rotate, a pushing surface 53 is provided on the pushing roller 51. The pushing surface 53 is formed by twisting a rectangular plane into a curved surface. Specifically, the rectangular plane is composed of two straight line segments c arranged in parallel along the radial direction of the pushing roller 51, and two straight line segments d arranged in parallel along the axial direction of the pushing roller 51. After twisting, the two line segments d are spiral-shaped, and the two line segments c intersect from the perspective of the axial direction of the pushing roller 51. The curved surface formed by the two twisted line segments c and the two line segments d is the pushing surface 53. A straight surface 54 extends on one side of the pushing surface 53, and the straight surface 54 is connected to the pushing surface 53.

[0030] See also Figure 6 and Figure 8 When the slider 31 slides in the sliding groove 211, the rotating shaft 56 can slide to contact the pushing surface 53 and slide on the pushing surface 53. Since the pushing surface 53 is twisted, the rotating shaft 56 drives the pushing roller 51 to rotate when sliding on the pushing surface 53. Therefore, when the slider 31 slides in the sliding groove 211, the mounting block 21 can be driven to move downward a certain distance. At the same time, the movement of the slider 31 can also drive the positioning assembly 3 to fix the position of the mounting block 21. In addition, the downward movement of the slider 31 makes it easier for the positioning protrusion 35 on the positioning block 34 to engage with the positioning groove 14, thereby avoiding the situation where the positioning protrusion 35 is difficult to engage with the positioning groove 14.

Claims

1. A boring device for machining the inner wall of a cylinder, comprising: A tool rod (1), characterized in that a mounting groove (11) is provided on the tool rod (1), a mounting block (21) sliding in the radial direction of the tool rod (1) is provided inside the mounting groove (11), a first elastic member (22) for pushing the mounting block (21) to move outside the mounting groove (11) is provided inside the mounting groove (11), a blade (4) is installed on the mounting block (21), a bevel (23) is provided on one side of the mounting block (21), when the tool rod (1) enters the inside of the blank hole, the hole mouth of the blank is against the bevel (23), and the bevel (23) can push the mounting block (21) to move inside the mounting groove (11), and a positioning component (3) is provided on the tool rod (1), and the positioning component (3) is used to fix the mounting block (21) inside the mounting groove (11).

2. A boring device for machining the inner wall of a cylinder according to claim 1, characterized in that: The positioning assembly (3) includes a sliding groove (211) provided on the mounting block (21), a sliding member (31) that slides along the axial direction of the knife rod (1) is provided inside the sliding groove (211), a sliding rod (33) is provided on one side of the sliding member (31), and a positioning block (34) is provided at one end of the sliding rod (33) away from the sliding member (31), a groove for sliding the positioning block (34) is provided on the mounting block (21), a plurality of positioning grooves (14) are provided on the mounting groove (11), a positioning protrusion (35) that cooperates with the positioning groove (14) is provided on the positioning block (34), and when the sliding member (31) moves, the positioning protrusion (35) on the positioning block (34) can be engaged with the positioning groove (14), and a second elastic member (32) is provided in the sliding groove (211) to keep the positioning groove (14) away from the positioning protrusion (35).

3. A boring device for machining the inner wall of a cylinder according to claim 2, characterized in that: Both sides of the mounting block (21) are rotatably provided with push rollers (51), the rotation axis of the push rollers (51) is located at an eccentric position of the push rollers (51), and the push rollers (51) can abut against the inner side wall of the mounting groove (11) when rotating.

4. A boring device for machining the inner wall of a cylinder according to claim 3, characterized in that: The pushing roller (51) is provided with a pushing surface (53), which is formed by twisting a rectangular plane into a curved surface. A straight surface (54) extends from one side of the pushing surface (53) and is connected to the pushing surface (53). The sliding member (31) is provided with a receiving groove (55), and a rotating shaft (56) is rotatably provided at one end of the receiving groove (55) close to the pushing roller (51). The rotating shaft (56) is in contact with the straight surface (54). When the sliding member (31) slides inside the sliding groove (211), the rotating shaft (56) can slide until it contacts the pushing surface (53).

5. The boring device for machining the inner wall of a cylinder according to claim 2, characterized in that: The positioning blocks (34) and the slide bars (33) are both provided in plurality, and the positioning protrusions (35) on the plurality of positioning blocks (34) are staggered with each other. The slide bars (33) are made of a flexible material and can push the positioning blocks (34) to move while also having elastic deformation.

6. The boring device for machining the inner wall of a cylinder according to claim 4, characterized in that: A flexible surface (52) is provided on the inner side wall of the installation groove (11), and the pushing roller (51) can contact the flexible surface (52) when rotating.

7. A boring device for machining the inner wall of a cylinder according to claim 6, characterized in that: The material of the flexible surface (52) may be hard rubber with a thickness of 1 mm.

8. The boring device for machining the inner wall of a cylinder according to claim 3, characterized in that: A friction surface is provided on the outer surface of the pushing roller (51).

9. The boring device for machining the inner wall of a cylinder according to claim 1, characterized in that: The tip of the blade (4) is located higher than the topmost position of the inclined surface (23).

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