Auxiliary machining device for cylinder part

Abstract

The application discloses a kind of auxiliary machining devices of cylinder parts, belong to the technical field of machining auxiliary tool, for solving the problem of low machining precision and machining efficiency due to clamping defects of cylinder parts.The auxiliary machining device of cylinder part of the present application, including inner support unit and drive unit;Inner support unit includes support component and connecting component, the both ends of connecting component are respectively rotatably connected with support component and drive unit;Drive unit moves the support component along the radial direction by synchronously driving the one end of multiple connecting components to move synchronously, so as to realize the inner support and release of support component to cylinder part.The auxiliary machining device of the present application can realize the uniform straining from inside to outside of cylinder part, and plays a flexible supporting role for cutting or welding machining of cylinder part.

Description

Technical Field

[0001] This invention belongs to the field of auxiliary tools for machining, and relates to an auxiliary machining device for cylindrical parts. Background Technology

[0002] Thin-walled rotary cylindrical parts require internal clamping and expansion during 3D laser cutting to achieve high-precision machining dimensions. Currently, internal support devices commonly used to assist in machining mainly consist of multiple circumferentially divided arc blocks or jaws. Through conical mating or screw-driven mechanisms, these blocks or jaws open and close radially synchronously, thus achieving internal clamping and expansion of the cylindrical parts.

[0003] However, existing internal support devices for auxiliary machining have some shortcomings. Firstly, because they use circumferentially divided arc blocks or jaws to open and close radially simultaneously, sufficient opening and closing gaps must be reserved between the segmented surfaces of the arc blocks or jaws. However, these gaps reduce the contact area between the inner support surface of the cylinder or ring-rib parts and the outer circle of the arc blocks or jaws, resulting in a reduced rounding effect for thin-walled cylinders and ring-rib parts, thus lowering the machining accuracy. Secondly, during manual operation, when the opening and closing position of the arc blocks or jaws needs to be adjusted due to machining errors or other reasons, it is difficult to control the rounding force applied to the parts manually, easily leading to over-rounding and deformation. Furthermore, manually operating conical mating or screw-type drive mechanisms is complex and labor-intensive. Therefore, the existing internal support mechanisms suffer from low machining accuracy and efficiency, and lack of flexibility, and require improvement. Summary of the Invention

[0004] Based on the above analysis, the present invention aims to provide an auxiliary processing device for cylindrical parts to solve the problem of low processing accuracy and efficiency of cylindrical parts due to clamping defects.

[0005] The objective of this invention is mainly achieved through the following technical solutions.

[0006] The present invention provides an auxiliary processing device for cylindrical parts, including an inner support unit and a driving unit; the inner support unit includes a support component and a connecting component, and the two ends of the connecting component are rotatably connected to the support component and the driving unit respectively; the driving unit drives one end of multiple connecting components to move synchronously, thereby causing the support component to move radially, thereby realizing the inner support and release of the support component on the cylindrical part.

[0007] Furthermore, the motion plane of the connecting component coincides with the central axis of the drive unit.

[0008] Furthermore, the drive unit includes a fixed component and a movable component, the movable component being arranged coaxially with the fixed component and capable of moving axially relative to the fixed component.

[0009] Furthermore, the moving component achieves axial movement with the fixed component via threads.

[0010] Furthermore, the moving component includes a screw sleeve, which includes an operating end, the outer periphery of which is hexagonal.

[0011] Furthermore, the movable component also includes a sliding component, which is sleeved on the outer periphery of the fixed component and slidably connected to the fixed component along the axial direction.

[0012] Furthermore, the threaded sleeve also includes a limiting protrusion ring, and the sliding component includes a limiting ring groove that matches the limiting protrusion ring, with the limiting protrusion ring located within the limiting ring groove.

[0013] Furthermore, the inner support unit also includes a guide assembly, which is slidably connected to the support component.

[0014] Furthermore, the guiding assembly includes a guide disk and linear bearings. The guide disk is fixedly connected to the fixing assembly, and multiple linear bearings are arranged correspondingly to multiple support components. The support components and the guide disk are slidably connected through the linear bearings.

[0015] Furthermore, the guide assembly also includes guide grooves, with multiple guide grooves arranged axially in correspondence with multiple linear bearings.

[0016] Furthermore, the support components include a first support member and a second support member. Multiple first and second support members are evenly arranged around the central axis of the drive unit at intervals, and their outer peripheral support edges are located on the first circumference R1 and the second circumference R2, respectively. The drive unit synchronously drives one end of multiple connecting components to move synchronously, thereby causing the first and second support members to move radially by different distances, so that the first circumference R and the second circumference R can overlap or separate, realizing the internal support and release of the support components on the cylindrical parts.

[0017] Furthermore, both the first support member and the second support member have arc-shaped outer cylindrical surfaces with the same radius. When the first circumference R1 and the second circumference R2 coincide, the arc-shaped outer cylindrical surfaces of multiple first support members and multiple second support members are spliced ​​together to form a cylindrical surface.

[0018] Furthermore, the connecting component includes a first connector and a second connector, the first connector and the second connector having different lengths and respectively connecting to the first support and the second support.

[0019] Furthermore, both the first support member and the second support member include an inner ring member, an outer ring member, and a first elastic member. The first elastic member is located between the inner ring member and the outer ring member and is capable of moving the outer ring member radially outward relative to the inner ring member.

[0020] Furthermore, both the first and second support members also include locking components, which enable the inner and outer ring members to fit together and lock or unlock.

[0021] Furthermore, the drive unit also includes a drive assembly, which is detachably connected to the operating end. The drive assembly can drive the screw sleeve to rotate and lock the position of the screw sleeve on the sliding component.

[0022] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0023] 1. The auxiliary processing device for cylindrical parts of the present invention, by providing a first support member and a second support member, enables the driving unit to synchronously drive the first support member and the second support member to move radially by different distances, which not only avoids interference between the support members in the circumferential direction and saves space, but also enables the first circumference and the second circumference to coincide when opened, so as to achieve uniform tensioning of the cylindrical part from the inside to the outside, and provides flexible support for the cutting or welding processing of the cylindrical part.

[0024] 2. The auxiliary processing device for cylindrical parts of the present invention, by setting a first support member and a second support member that can achieve 360° internal support and expansion of the cylindrical parts, avoids the increase in shape tolerance caused by the gap between the support members when processing thin-walled cylindrical parts, ring ribs and other weak rigid parts, reduces the roundness error of the parts and improves the processing accuracy of the parts.

[0025] 3. The auxiliary processing device for cylindrical parts of the present invention, by driving the connecting component to move on the plane where the central axis of the driving unit is located, enables the arrangement and movement of the connecting component to be free from restriction and interference in the circumferential direction, thereby increasing the stroke range and flexibility of the connecting component.

[0026] 4. The auxiliary processing device for cylindrical parts of the present invention, by setting a drive unit including a screw, a screw sleeve and a sliding sleeve, has high transmission efficiency and is easy to operate. It can greatly improve the product clamping and positioning efficiency, reduce process auxiliary time, improve equipment utilization, and reduce processing costs.

[0027] 5. The auxiliary processing device for cylindrical parts of the present invention improves the adaptability and flexibility of the auxiliary processing device by setting an inner ring and an outer ring on the support.

[0028] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained through the embodiments described and the accompanying drawings, which are particularly pointed out. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the auxiliary processing device according to Embodiment 1 of the present invention;

[0030] Figure 2 This is a top view of the auxiliary processing device according to Embodiment 1 of the present invention;

[0031] Figure 3 This is a schematic diagram of the internal support unit of Embodiment 1 of the present invention;

[0032] Figure 4 This is a schematic diagram illustrating the motion principle of the support component according to an embodiment of the present invention;

[0033] Figure 5 This is a cross-sectional view of the driving unit according to an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the mounting base according to an embodiment of the present invention;

[0035] Figure 7 This is a partial structural schematic diagram of the driving unit according to an embodiment of the present invention;

[0036] Figure 8 This is a schematic cross-sectional view of the auxiliary processing device according to an embodiment of the present invention;

[0037] Figure 9 This is a schematic diagram of the structure of the support component in Embodiment 2 of the present invention;

[0038] Figure 10 This is one of the partial cross-sectional schematic diagrams of the inner support unit in Embodiment 2 of the present invention;

[0039] Figure 11 This is a second partial cross-sectional schematic diagram of the inner support unit in Embodiment 2 of the present invention;

[0040] Figure 12 This is a schematic cross-sectional view of the locking component and the connecting component according to Embodiment 2 of the present invention;

[0041] Figure 13 This is a schematic diagram of the drive component in Embodiment 3 of the present invention.

[0042] Figure label:

[0043] 1-Internal support unit;

[0044] 11-Supporting component; 111-First support member; 112-Second support member;

[0045] 1101-Limiting part; 1102-Inner ring part; 11021-First slide groove; 11022-Through groove; 1103-Outer ring part; 11031-Boss; 11032-Second slide groove; 11033-Second stop block; 1104-First elastic component; 1105-Locking component; 11051-First stop block; 11052-Stop bar;

[0046] 12-Connecting component; 121-First connector; 122-Second connector; 1201-First bolt assembly; 1202-Second bolt assembly; 1203-Third bolt assembly; 1204-Arc-shaped through groove; 12041-Locking section; 12042-Release section;

[0047] 13-Guide assembly; 131-Guide disc; 132-Linear bearing; 133-Guide groove; 134-Limiting component;

[0048] 2-Drive unit;

[0049] 21-Fixing component; 211-Mounting base; 2111-Mounting end; 2112-Sliding end; 2113-Guide keyway; 212-Mounting stud; 2121-Internal threaded hole; 213-Screw; 214-Nut; 215-Cotter pin;

[0050] 22-Moving component; 221-Screw sleeve; 2211-Operating end; 2212-Limiting protrusion ring; 222-Sliding component; 2221-Sliding sleeve; 2222-End cap; 22221-Limiting ring groove;

[0051] 23-Drive assembly; 231-Driver; 2311-Rotating handle; 232-Locking component; 2321-Locking stop; 2322-Pull component; Second elastic component 233;

[0052] R1 - First circumference; R2 - Second circumference. Detailed Implementation

[0053] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0054] Example 1

[0055] This embodiment discloses an auxiliary processing device for cylindrical parts, such as... Figure 1 and Figure 2As shown, it includes an inner support unit 1 and a drive unit 2. The inner support unit 1 includes a support component 11 and a connecting component 12. The two ends of the connecting component 12 are rotatably connected to the support component 11 and the drive unit 2, respectively. The support component 11 includes a first support member 111 and a second support member 112. The three first support members 111 and the three second support members 112 are evenly arranged around the central axis of the drive unit 2 at intervals, and the outer peripheral support edges are located on the first circumference R1 and the second circumference R2, respectively. The drive unit 2 synchronously drives one end of the six connecting components 12 to move synchronously, so that the first support member 111 and the second support member 112 move radially by different distances, thereby enabling the first circumference R1 and the second circumference R2 to overlap or separate, realizing the inner support and release of the cylindrical part by the support component 11.

[0056] The auxiliary processing device for the cylindrical part in this embodiment sets a first support member 111 and a second support member 112 with their outer peripheral support edges located on the first circumference R1 and the second circumference R2, respectively. The driving unit 2 can synchronously drive the first support member 111 and the second support member 112 to move radially by different distances. This allows the first support member 111 and the second support member 112 to be staggered when closed, avoiding interference between the support members 11 in the circumferential direction and saving space. At the same time, when opened, the first circumference R1 and the second circumference R2 can be made to coincide, achieving uniform tensioning of the cylindrical part from the inside out. This provides flexible support for the cutting or welding of the cylindrical part.

[0057] A preferred embodiment of the present invention, such as Figure 2 and Figure 3 As shown, both the first support member 111 and the second support member 112 have arc-shaped outer cylindrical surfaces, and the diameter of the arc-shaped outer cylindrical surface is consistent with the inner diameter of the cylindrical part. When the first circumference R1 and the second circumference R2 coincide, the arc-shaped outer cylindrical surfaces of multiple first support members 111 and multiple second support members 112 are spliced ​​together to form a cylindrical surface, thereby enabling 360° inward support and expansion of the cylindrical part. This avoids the increased shape tolerance caused by the gaps between the support members when machining thin-walled cylindrical parts, ring ribs, and other weakly rigid parts, reducing the roundness error of the part and improving the machining accuracy of the part.

[0058] A preferred embodiment of the present invention, such as Figure 3 As shown, the connecting component 12 consists of multiple connecting rods evenly arranged around the central axis of the drive unit 2, one end of which is rotatably connected to the drive unit 2 via a third bolt assembly 1203. Preferably, the multiple connecting rods are arranged radially so that the connecting component 12 moves in the plane containing the central axis of the drive unit 2, thereby ensuring that the arrangement and movement of the connecting component 12 are not restricted or interfered with in the circumferential direction, increasing the travel range and flexibility of the connecting component 12.

[0059] like Figure 3 As shown, the connecting component 12 includes a first connecting member 121 and a second connecting member 122. The first connecting member 121 and the second connecting member 122 are rotatably connected to the first support member 111 and the second support member 112 respectively via a first bolt assembly 1201 and a second bolt assembly 1202. In a preferred embodiment of the present invention, a third bolt assembly 1203 is located on the same circumference, and the first connecting member 121 and the second connecting member 122 have different lengths and are respectively connected to the first support member 111 and the second support member 112.

[0060] like Figure 4 As shown, for example, when the support member 11 is retracted inward to its initial position, the diameter of the first circumference R1 where the outer peripheral edge of the first support member 111 is located is greater than the diameter of the second circumference R2 where the outer peripheral edge of the second support member 112 is located. Since the distance between the first support member 111 and the first bolt assembly 1201 and the distance between the second support member 112 and the second bolt assembly 1202 are equal, the diameter D of the circumference where the first bolt assembly 1201 is located is... 11 It is also larger than the diameter D of the circumference of the second bolt assembly 1202. 21 When the support member 11 opens outward to the full circle position, the diameter D of the circumference of the first bolt assembly 1201... 12 The diameter D of the circumference of the second bolt assembly 1202 22 Equal; for example, such as Figure 4 As shown, the third bolt assembly 1203 is installed on a circumference with a diameter D3 = 120 mm. When this auxiliary device expands to a circle, D... 12 =D 22 =220mm, the reciprocating opening and closing displacement of the first support member 111 is designed to be 10mm, the reciprocating opening and closing displacement of the second support member 112 is designed to be 25.5mm, and the driving unit 2 synchronously drives one end of the first connector 121 and the second connector 122 to move synchronously along the axial direction by a displacement of 24.5mm. Therefore, calculations show that the distance between the first bolt assembly 1201 and the third bolt assembly 1203 is 50.4mm, and the length of the first connector 121 is 56.6mm, meaning the length of the first connector 121 is less than the length of the second connector 122.

[0061] Preferably, the first support member 111 and the second support member 112 have different shapes and angles, for example, such as Figure 2 and Figure 3As shown, the splicing surface between the first support member 111 and the second support member 112 is perpendicular to the radial movement direction of the first support member 111. Since the two sides of the second support member 112 abut against the two sides of the first support member 111 from the radial direction, it not only makes the supporting force of the support member 11 on the cylindrical part more uniform in the circumferential direction, but also makes the splicing cylindrical surface of the first support member 111 and the second support member 112 more stable, thus improving the machining accuracy of the part.

[0062] It should be noted that the clearance between the support component 11 and the connecting component 12 should not be too large or too small, and should meet the clearance tolerance requirements of H10 / e9. If the clearance is too large, the effective force of the connecting component 12 on the support component 11 will be reduced, which will increase the difficulty of operation for the operator. If the clearance is too small, the rotation of the connecting component 12 will be difficult and jamming will occur. At the same time, it will also increase the processing cost.

[0063] A preferred embodiment of the present invention, such as Figure 5 and Figure 6 As shown, the drive unit 2 includes a fixed component 21 and a moving component 22. The moving component 22 is coaxially arranged with the fixed component 21 and can move axially relative to the fixed component 21, thereby driving one end of the connecting member 12, which is rotatably connected to the moving component 22, to move axially and realize the opening and closing action of the support member 11 in the radial direction.

[0064] Preferred, such as Figure 5 As shown, the fixing component 21 includes a mounting base 211, a mounting stud 212, and a screw 213; as Figure 6 As shown, the mounting base 211 includes a mounting end 2111 and a sliding end 2112. The mounting end 2111 is used to install and position this auxiliary processing device in the laser cutting equipment. Optionally, the mounting base 211 is made of structural steel 45#-GB / T699 forged billet, which is rough-machined, fine-machined, heat-treated, and then fine-machined. The outer cylindrical surface of the sliding end 2112 is provided with three 120° circumferentially divided guide keyways 2113. An axial guide key is installed in the guide keyway 2113. The guide key is clearance-fitted with the keyway on the inner wall of the moving component 22, thereby realizing the axial displacement function of the moving component 22. Mounting base 211 is designed with a through hole, and mounting stud 212 passes through the through hole of mounting base 211. One end near mounting end 2111 is fixedly connected to mounting base 211 by nut 214 and cotter pin 215 to realize axial positioning of mounting stud 212. The other end of mounting stud 212 has an internal threaded hole 2121. One end of screw 213 is threaded into the internal threaded hole 2121. Mounting stud 212 and screw 213 are locked together by locking nut 216.

[0065] Preferred, such as Figure 5As shown, the moving component 22 includes a threaded sleeve 221 and a sliding component 222. The threaded sleeve 221 is threadedly engaged with the screw 213. The threaded sleeve 221 includes an operating end 2211, the outer periphery of which is an external hexagon. The operator can use a common Allen wrench to rotate the operating end 2211 to screw the threaded sleeve 221 in and out on the screw 213, thereby achieving axial movement. The sliding component 222 includes a sliding sleeve 2221 and an end cap 2222. The sliding sleeve 2221 is fitted onto the sliding end 2112. The outer periphery of the sliding sleeve 2221 is evenly provided with 6 pairs of lugs along the circumferential direction for installing the third bolt assembly 1203 to achieve a rotatable connection with the connecting component 12. The inner wall of the sliding sleeve 2221 is provided with a keyway that matches the guide key on the guide keyway 2113, so that the sliding sleeve 2221 can only slide axially on the sliding end 2112. End cap 2222 is an annular disc, fixedly connected to the end of sliding sleeve 2221 by screws. For example... Figure 7 As shown, the inner wall of the end cap 2222 is provided with a limiting ring groove 22221, and the threaded sleeve 221 is provided with a limiting protrusion ring 2212. The limiting protrusion ring 2212 is located at the other end of the operating end 2211 and is located in the limiting ring groove 22221. The limiting protrusion ring 2212 matches the limiting ring groove 22221 so that the limiting protrusion ring 2212 can drive the sliding component 222 to move axially synchronously, thereby converting the rotational motion of the operating end 2211 into the axial linear displacement of the third bolt assembly 1203 on the connecting component 12.

[0066] In a preferred embodiment of the present invention, the inner support unit 1 further includes a guide component 13, which is slidably connected to the support component 11 to ensure the radial movement path of the support component 11.

[0067] Preferred, such as Figure 8As shown, the guide assembly 13 includes a guide disk 131, linear bearings 132, guide grooves 133, and limiting members 134. The guide disk 131 is fixedly connected to the mounting base 211 of the fixing assembly 21. Six linear bearings 132 are arranged correspondingly to six support members 11. The mounting base of the linear bearing 132 is fixedly connected to the guide disk 131. The outer end of the sliding rod of the linear bearing 132 is fixedly connected to the support member 11 to achieve radial sliding connection between the support member 11 and the guide disk 131. The guide groove 133 includes a radial T-shaped groove, and six guide grooves 133 are evenly fixed on the guide disk 131 around the axis. The first support member 111 and the second support member 112 both include a limiting part 1101. Optionally, the limiting part 1101 includes a T-shaped slider. The limiting part 1101 matches the guide groove 133 to limit the support member 11 in both the circumferential and axial directions. Optionally, the clearance between the limiting part 1101 and the guide groove 133 is controlled within 0.1mm to 0.2mm. Six limiting members 134 are respectively fixed at the outer end openings of the six guide grooves 133 to limit the maximum radial stroke of the support member 11, avoid excessive radial opening, and ensure the shape accuracy of the cylindrical part.

[0068] The auxiliary processing device for cylindrical parts in this embodiment has high transmission efficiency and is very easy to operate. By using an ordinary internal hex wrench to rotate the external hex of the operating end 2211, the support component 11 can be used to tighten and loosen the cylindrical or ring-ribbed parts from the inside out. This can greatly improve the product clamping and positioning efficiency, reduce process auxiliary time, increase equipment utilization, and reduce processing costs.

[0069] Example 2

[0070] The difference between the auxiliary processing device for the cylindrical part in this embodiment and that in embodiment 1 is that, for example... Figure 9 As shown, both the first support member 111 and the second support member 112 include an inner ring member 1102, an outer ring member 1103 and a first elastic member 1104. The first elastic member 1104 is located between the inner ring member 1102 and the outer ring member 1103 and can make the outer ring member 1103 move radially outward relative to the inner ring member 1102.

[0071] In this embodiment, by splitting the support component 11 into an inner ring component 1102 and an outer ring component 1103, and providing a first elastic component 1104 between the inner ring component 1102 and the outer ring component 1103, the radial support radius of the support component 11 can be adaptively adjusted so that when the inner diameter tolerance of the cylindrical part is large, it can provide adaptive support to the inner wall of the cylindrical part, making the use of the auxiliary processing device more flexible.

[0072] A preferred embodiment of the present invention, such as Figure 9 , Figure 10 and Figure 11 As shown, the inner diameter of the outer ring 1103 is the same as the outer diameter of the inner ring 1102. The outer wall of the inner ring 1102 has a first groove 11021, and the first elastic member 1104 is located at the bottom of the first groove 11021. Preferably, the first elastic member 1104 is a spring. The inner wall of the outer ring 1103 has a boss 11031 that matches the first groove 11021. When the support member 11 moves radially to its maximum stroke but fails to tighten with the inner wall of the cylindrical part, the outer ring 1103 moves outward under the thrust of the first elastic member 1104 until the outer ring 1103 and the cylindrical part are tightened.

[0073] It should be noted that the center lines of the first groove 11021 and the boss 11031 are parallel to the center line of the support member 11, so as to ensure that the thrust direction of the first elastic member 1104 exerted by the outer ring member 1103 is consistent with the radial movement direction of the support member 11. In order to ensure the adaptive movement direction and stability of the outer ring member 1103, multiple sets of first grooves 11021 and bosses 11031 can be symmetrically arranged. In addition, the elasticity of the first elastic member 1104 needs to be selected according to the rigidity, thickness, precision requirements or other factors of the cylindrical part.

[0074] Preferably, in order to control the working state of the first elastic member 1104, the first support member 111 and the second support member 112 also include a locking member 1105, which can lock or unlock the inner ring member 1102 and the outer ring member 1103.

[0075] A preferred embodiment of the present invention, such as Figure 10 and Figure 11 As shown, the inner ring 1102 has a through groove 11022 along its radial center. The locking component 1105 passes through the through groove 11022. The locking component 1105 includes a first stop block 11051 and a stop bar 11052. The first stop block 11051 and the stop bar 11052 are located at both ends of the locking component 1105 and outside the through groove 11022. The outer ring 1103 includes a second slide groove 11032 and a second stop block 11033. The second stop block 11033 is located at the outlet of the second slide groove 11032. The first stop block 11051 is located inside the second slide groove 11032 and is arranged opposite to the second stop block 11033.

[0076] like Figure 10 and Figure 12As shown, an arc-shaped through groove 1204 is provided at one end of the connecting component 12 that is connected to the supporting component 11. The arc-shaped through groove 1204 is arranged around the first bolt assembly 1201. The arc-shaped through groove 1204 includes a locking section 12041 and a releasing section 12042. The releasing section 12042 is close to one end of the supporting component 11 and is concave towards the supporting component 11. The stop bar 11052 passes through the arc-shaped through groove 1204.

[0077] like Figure 10 and Figure 12 As shown, when the stop lever 11052 is located within the locking section 12041, due to the limiting effect of the locking section 12041 on the stop lever 11052, the first stop block 11051 also simultaneously limits the second stop block 11033, thereby compressing the first elastic member 1104, so that the outer ring member 1103 can be kept in close contact and locked on the inner ring member 1102; when the drive unit 2 drives one end of the second bolt assembly 1202 on the connecting member 12 to move linearly, the other end of the connecting member 12 surrounds the first bolt assembly 1202. The bolt assembly 1201 rotates relative to the stop rod 11052, which slides within the arc-shaped through groove 1204. When the support member 11 is in the fully extended position, the stop rod 11052 slides from the locking section 12041 into the release section 12042, releasing the tension force of the first stop block 11051 on the second stop block 11033. The outer ring member 1103 moves radially outward under the push of the first elastic member 1104 until it abuts against the inner wall of the cylinder part, thus assisting in the precise machining of the cylinder part.

[0078] Example 3

[0079] The auxiliary processing device for the cylindrical part in this embodiment differs from those in Embodiments 1 and 2 in that, for example... Figure 13 As shown, the drive unit 2 also includes a drive component 23, which is detachably connected to the operation end 2211. The drive component 23 can drive the screw sleeve 221 to rotate and lock the screw sleeve 221 onto the sliding member 222.

[0080] In this embodiment, the auxiliary processing device locks the threaded sleeve 221 onto the sliding member 222 by setting the drive assembly 23. This prevents the threaded connection between the threaded sleeve 221 and the screw 213 from loosening due to vibration during the processing of the cylindrical part. This would cause the threaded sleeve 221 to rotate on the screw 213, resulting in axial displacement of the sliding member 222 and affecting the internal support effect. In addition, the drive assembly 23 also allows the auxiliary processing device to perform internal support and release operations on the cylindrical workpiece without the need for additional tools, thus improving processing efficiency.

[0081] A preferred embodiment of the present invention, such as Figure 7 and Figure 13As shown, the drive assembly 23 includes a drive member 231, a locking member 232, and a second elastic member 233. The drive member 231 is sleeved on the outside of the operating end 2211. The inner wall of the drive member 231 is an inner hexagonal prism that matches the outer hexagonal prism of the operating end 2211. The drive member 231 is provided with a rotating handle 2311. The locking member 232 is slidably sleeved on the outer periphery of the drive member 231 along the axial direction. The second elastic member 233 is axially arranged between the locking member 232 and the drive member 231. Preferably, the second elastic member 233 is a spring sleeved on the outer periphery of the drive member 231.

[0082] Furthermore, in a preferred embodiment of the present invention, such as Figure 7 and 13 As shown, the limiting ring groove 22221 is a semi-circular annular groove, and the locking member 232 includes a locking block 2321 and a pulling member 2322; the locking block 2321 is a semi-circular annular protrusion located at one end away from the second elastic member 233, and the end face of the locking block 2321 matches the end face of the limiting ring groove 22221; optionally, the pulling member 2322 is a radial protrusion symmetrically arranged at one end near the second elastic member 233.

[0083] It is understandable that the circumferential relative position between the locking member 232 and the driving member 231 is kept constant through the axial keyway engagement, and the sliding stroke of the locking member 232 on the driving member 231 is used for constraint.

[0084] When the drive assembly 23 is installed on the threaded sleeve 221, the locking member 232 corresponds to the circumferential position of the limiting ring groove 22221, so that the axial end face of the locking member 232 abuts against the outer end face of the limiting ring groove 22221, and the second elastic member 233 is in a compressed state. When performing the rounding operation, rotating the rotating handle 2311 causes the drive assembly 231 to drive the threaded sleeve 221 to rotate. When the drive assembly 23 and the threaded sleeve 221 rotate to the preset rounding position, the axial end face of the locking member 232 completely disengages from the outer end face of the limiting ring groove 22221. Under the elastic thrust of the second elastic member 233, the locking member 232 moves axially and its side end face abuts against the side end face of the limiting ring groove 22221, thereby locking the threaded sleeve 221 on the sliding member 222 and preventing the threaded sleeve 221 from rotating accidentally on the screw 213.

[0085] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. An auxiliary processing device for cylindrical parts, characterized in that, It includes an internal support unit (1) and a drive unit (2); The inner support unit (1) includes a support component (11) and a connecting component (12), and the two ends of the connecting component (12) are rotatably connected to the support component (11) and the driving unit (2), respectively. The drive unit (2) drives one end of multiple connecting parts (12) to move synchronously, thereby causing the support part (11) to move radially, thus realizing the internal support and release of the support part (11) on the cylindrical part; The support component (11) includes a first support member (111) and a second support member (112). Multiple first support members (111) and second support members (112) are evenly arranged around the central axis of the drive unit (2) at intervals, and their outer peripheral support edges are located on the first circumference R1 and the second circumference R2, respectively. The drive unit (2) drives one end of multiple connecting components (12) to move synchronously, thereby causing the first support member (111) and the second support member (112) to move radially by different distances, so that the first circumference R and the second circumference R can overlap or separate. Both the first support member (111) and the second support member (112) have arc-shaped outer cylindrical surfaces with the same radius. When the first circumference R1 and the second circumference R2 overlap, the arc-shaped outer cylindrical surfaces of multiple first support members (111) and multiple second support members (112) are spliced ​​together to form a cylindrical surface, which realizes 360° internal support and expansion of the cylindrical part. The drive unit (2) includes a moving component (22) and a drive component (23); the moving component (22) includes a threaded sleeve (221) and a sliding component (222), the sliding component (222) includes a limiting annular groove (22221), one end of the threaded sleeve (221) is located in the limiting annular groove (22221); the drive component (23) includes a drive member (231), a locking member (232) and a second elastic member (233), the locking member (232) is slidably sleeved on the outer periphery of the drive member (231) along the axial direction, and the second elastic member (233) is provided axially between the locking member (232) and the drive member (231). The limiting ring groove (22221) is a semi-circular annular groove. When the drive assembly (23) rotates the threaded sleeve (221) to the preset rounded position, under the elastic thrust of the second elastic component (233), the locking component (232) moves axially and its side end face abuts against the side end face of the limiting ring groove (22221), thereby locking the threaded sleeve (221) on the sliding component (222) and preventing the threaded sleeve (221) from rotating accidentally. Both the first support member (111) and the second support member (112) include an inner ring member (1102), an outer ring member (1103), a first elastic member (1104), and a locking member (1105). The first elastic member (1104) is located between the inner ring member (1102) and the outer ring member (1103) and can cause the outer ring member (1103) to move radially outward relative to the inner ring member (1102). The locking member can cause the inner ring member (1102) and the outer ring member (1103) to fit together and lock or unlock.

2. The auxiliary processing device for cylindrical parts according to claim 1, characterized in that, The motion plane of the connecting component (12) coincides with the central axis of the driving unit (2).

3. The auxiliary processing device for cylindrical parts according to claim 2, characterized in that, The movable component (22) is arranged coaxially with the fixed component (21) and the movable component (22) is axially movable relative to the fixed component (21).

4. The auxiliary processing device for cylindrical parts according to claim 3, characterized in that, The threaded sleeve (221) includes an operating end (2211), the outer periphery of which is hexagonal.

5. The auxiliary processing device for cylindrical parts according to claim 4, characterized in that, The sliding component (222) is sleeved on the outer periphery of the fixed component (21) and is slidably connected to the fixed component (21) along the axial direction.

6. The auxiliary processing device for cylindrical parts according to claim 5, characterized in that, The threaded sleeve (221) further includes a limiting protrusion ring (2212), and the sliding component (222) includes a limiting ring groove (22221) that matches the limiting protrusion ring (2212), and the limiting protrusion ring (2212) is located in the limiting ring groove (22221).

7. The auxiliary processing apparatus for cylindrical parts according to any one of claims 3 to 6, characterized in that, The inner support unit (1) further includes a guide component (13), which is slidably connected to the support component (11).

8. The auxiliary processing device for cylindrical parts according to claim 7, characterized in that, The guide assembly (13) includes a guide disk (131) and a linear bearing (132). The guide disk (131) is fixedly connected to the fixing assembly (21). Multiple linear bearings (132) are arranged correspondingly to multiple support components (11). The support components (11) and the guide disk (131) are slidably connected through the linear bearings (132).

9. The auxiliary processing device for cylindrical parts according to claim 8, characterized in that, The guide assembly (13) also includes guide grooves (133), and a plurality of guide grooves (133) are arranged axially corresponding to a plurality of linear bearings (132).

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