Roll finish device

Abstract

The utility model belongs to the technical field of machining, and discloses a tumbling device. The tumbling device comprises a main body, a hob assembly and a wear-resistant gasket, one end of the main body can be connected with a machine tool, the other end of the main body is provided with a first cylindrical part, the first cylindrical part is provided with an assembly space, the hob assembly comprises a plurality of fixing shafts arranged at intervals in the circumferential direction of the assembly space, and each fixing shaft is sleeved with an annular hob capable of freely rotating; at least part of the annular hob protrudes out of the first cylindrical part in the radial direction of the first cylindrical part, each fixing shaft is sleeved with a wear-resisting gasket, and the wear-resisting gaskets are clamped between the annular hob and the rear wall of the assembly space in the feeding direction of the first cylindrical part relative to the workpiece with the hole, so that direct friction between the annular hob and the rear wall of the assembly space is effectively reduced, and the service life of the assembly space is prolonged. The abrasion between the annular hob and the main body is obviously reduced, so that the service life of the tumbling device is prolonged, and the processing quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a burnishing device. Background Technology

[0002] Burnishing devices can be used to process the inner wall of perforated workpieces to change their inner surface roughness and diameter accuracy. Typically, the inner wall of the workpiece is cut by a scraping tool to change the surface roughness and roundness error of the inner wall.

[0003] However, traditional burnishing devices typically use a hob or ball bearing to directly contact the inner wall of the workpiece and achieve surface processing through rotation and feed motion. During long-term use, the hob wears out quickly between itself and the main body, resulting in a decrease in the positioning accuracy of the hob, a short service life of the burnishing device, and even affecting the processing quality.

[0004] Therefore, there is an urgent need for a calendering device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a burnishing device that reduces wear between the annular cutter and the main body, thereby extending the service life of the burnishing device and improving processing quality.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A burnishing apparatus for machining the hole wall of a workpiece with holes, the burnishing apparatus comprising:

[0008] The main body has a tail portion that can be connected to a machine tool, and a head portion of the main body has a first cylindrical portion with an assembly space.

[0009] The hobbing cutter assembly includes a plurality of fixed shafts arranged circumferentially spaced along the assembly space, each fixed shaft being fitted with a freely rotatable annular hobbing cutter, at least a portion of which protrudes radially from the first cylindrical portion.

[0010] Wear-resistant pads are provided on each of the fixed shafts, and are sandwiched between the annular hob and the rear wall of the assembly space along the direction from the tail to the head of the main body.

[0011] Optionally, the main body includes a first cylindrical portion, a second cylindrical portion, a connecting portion, a tapered portion, and a locking portion connected in sequence. The assembly space is located at the end of the first cylindrical portion away from the second cylindrical portion, and the locking portion can be locked in place with the locking assembly of the machine tool.

[0012] Optionally, the diameter of the tapered portion gradually increases along the direction from the locking portion to the connecting portion.

[0013] Optionally, the diameter of the second cylindrical portion is larger than the diameter of the first cylindrical portion.

[0014] Optionally, the connecting portion is provided with a first mating groove in the circumferential direction.

[0015] Optionally, the locking part is provided with a second mating groove in the circumferential direction.

[0016] Optionally, the first cylindrical portion, the second cylindrical portion, the connecting portion, and the tapered portion are integrally formed, and the locking portion is fixedly connected to the tapered portion.

[0017] Optionally, the burnishing device further includes an adjustment assembly configured to adjust the position of the fixed shaft radially along the assembly space to change the radial protrusion of the annular hob relative to the first cylindrical portion.

[0018] Optionally, the adjusting component includes an adjusting block, which is disposed at one end of the main body where the hobbing assembly is mounted, and the adjusting block and the fixed shaft are engaged by a wedge structure.

[0019] Beneficial effects:

[0020] The burnishing device provided by this utility model effectively reduces the direct friction between the annular hob and the rear wall of the assembly space by sleeved with wear-resistant shims on the fixed shaft, significantly reducing the wear between the annular hob and the main body, thereby extending the service life of the burnishing device; in addition, the setting of the wear-resistant shims can stabilize the position of the annular hob on the fixed shaft, reduce the problem of decreased positioning accuracy caused by long-term use, ensure the stability of the hob during the processing, and thus improve the processing quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the tumbling device provided by this utility model from a first-view perspective;

[0022] Figure 2 This is a schematic diagram of the calendering device provided by this utility model from a second perspective.

[0023] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the calendering device provided by this utility model from a third-person perspective.

[0025] In the picture:

[0026] 100. Main body; 110. First cylindrical part; 111. Assembly space; 120. Second cylindrical part; 130. Connecting part; 131. First mating groove; 140. Conical part; 150. Locking part; 151. Second mating groove;

[0027] 210. Annular hob; 220. Fixed shaft;

[0028] 300. Wear-resistant gaskets;

[0029] 410. Adjusting block. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] This embodiment provides a burnishing device for machining the hole walls of a workpiece with holes, such as... Figures 1-4 As shown, the burnishing device includes a main body 100, a hobbing cutter assembly, and a wear-resistant pad 300. The tail of the main body 100 can be connected to a machine tool, and the head of the main body 100 is provided with a first cylindrical portion 110. The first cylindrical portion 110 is provided with an assembly space 111. The hobbing cutter assembly includes a plurality of fixed shafts 220 arranged circumferentially along the assembly space 111. Each fixed shaft 220 is fitted with a freely rotatable annular hob 210. At least a portion of the annular hob 210 protrudes radially from the first cylindrical portion 110. Each fixed shaft 220 is fitted with a wear-resistant pad 300. Along the direction from the tail to the head of the main body 100, a wear-resistant shim 300 is sandwiched between the annular hob 210 and the rear wall of the assembly space 111, effectively reducing the direct friction between the annular hob 210 and the rear wall of the assembly space 111, significantly reducing the wear between the annular hob 210 and the main body 100, thereby extending the service life of the burnishing device; in addition, the setting of the wear-resistant shim 300 can stabilize the position of the annular hob 210 on the fixed shaft 220, reduce the problem of decreased positioning accuracy caused by long-term use, ensure the stability of the hob during the processing, and thus improve the processing quality.

[0035] Optionally, in this embodiment, the wear-resistant pad 300 is an annular wear-resistant pad, which makes it easy to fit the annular wear-resistant pad onto the fixed shaft 220 and improves installation efficiency.

[0036] Optionally, such as Figures 1-2 As shown, the main body 100 includes a first cylindrical portion 110, a second cylindrical portion 120, a connecting portion 130, a tapered portion 140, and a locking portion 150 connected in sequence. An assembly space 111 is located at the end of the first cylindrical portion 110 away from the second cylindrical portion 120. The locking portion 150 can be locked into the locking assembly of the machine tool. The locking portion 150's ability to lock into the machine tool ensures the stability of the burnishing device during high-speed rotation or feed motion, reduces vibration during processing, and improves processing accuracy and the surface quality of the workpiece's inner wall.

[0037] Optionally, such as Figure 2 As shown, the diameter of the tapered portion 140 gradually increases along the direction from the locking portion 150 to the connecting portion 130. The design of the tapered portion 140 facilitates the alignment and installation of the burnishing device with the machine tool, reduces installation errors, and improves installation efficiency.

[0038] Optionally, such as Figure 2 As shown, the diameter of the second cylindrical part 120 is larger than the diameter of the first cylindrical part 110, which increases the overall rigidity and bending resistance of the main body 100, avoids deformation of the main body 100, and thus improves the stability and processing accuracy of the burnishing device.

[0039] Optionally, the connecting part 130 is provided with a first mating groove 131 in the circumferential direction. The first mating groove 131 facilitates the precise alignment and mating of the burnishing device and the auxiliary clamping device on the machine tool, which can effectively prevent the device from shifting or loosening during the processing, thereby improving the installation accuracy and processing stability.

[0040] Optionally, the locking part 150 is provided with a second mating groove 151 in the circumferential direction. The second mating groove 151 provides a fitting structure, enabling the locking part 150 to achieve a more secure locking fit with the machine tool locking assembly, effectively preventing loosening or rotational displacement of the burnishing device during processing, and ensuring processing stability. It should be noted that the machine tool locking assembly is prior art in the field, and the specific structure of the locking assembly will not be described in detail.

[0041] Optionally, the first cylindrical portion 110, the second cylindrical portion 120, the connecting portion 130, and the tapered portion 140 are integrally formed, and the locking portion 150 is fixedly connected to the tapered portion 140, which significantly enhances the overall rigidity and deformation resistance of the main body 100, ensures stability during processing, and improves processing accuracy. In this embodiment, the locking portion 150 can be welded or integrally connected to the small end of the tapered portion 140 to improve the stability and reliability of the connection between the locking portion 150 and the tapered portion 140.

[0042] Optionally, the burnishing device also includes an adjustment component configured to adjust the position of the fixed shaft 220 radially along the assembly space 111, thereby changing the radial protrusion of the annular hob 210 relative to the first cylindrical portion 110, improving machining accuracy, reducing machining errors, and improving machining quality.

[0043] Optionally, the adjustment component includes an adjustment block 410, which is disposed at one end of the main body 100 where the hob assembly is mounted. The adjustment block 410 and the fixed shaft 220 cooperate through a wedge structure to achieve precise radial fine adjustment of the fixed shaft 220, ensuring that the radial protrusion of the annular hob 210 accurately matches the processing requirements of the inner wall of the workpiece, thereby improving the processing accuracy and the surface quality of the inner wall of the workpiece.

[0044] like Figure 2 , Figure 3 and Figure 4As shown, in this embodiment, the assembly space 111 is provided with three fixed shafts 220, each fixed shaft 220 is fitted with an annular hob 210, each annular hob 210 is provided with a wear-resistant pad 300 between it and the rear wall of the assembly space 111, and each fixed shaft 220 has a small amount of movement in the radial direction of the assembly space 111. Optionally, the wedge structure may include wedge block A, wedge block B, and wedge block C. Wedge block A, wedge block B, and wedge block C each have an inclined surface A, an inclined surface B, and an inclined surface C, respectively. The three fixed shafts 220 are respectively provided with a first inclined surface, a second inclined surface, and a third inclined surface. The first inclined surface, the second inclined surface, and the third inclined surface cooperate with the inclined surface A, the inclined surface B, and the inclined surface C, respectively. The adjusting block 410 is threadedly connected to wedge block A, wedge block B, and wedge block C, and can drive wedge block A, wedge block B, and wedge block C to move synchronously along the axial direction of the assembly space 111. Through the cooperation of the wedge structure, the three fixed shafts 220 can move radially along the assembly space 111.

[0045] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A burnishing apparatus for machining the hole wall of a workpiece with holes, characterized in that, The calendering device includes: The main body (100) has a tail that can be connected to a machine tool, and the head of the main body (100) is provided with a first cylindrical part (110), and the first cylindrical part (110) is provided with an assembly space (111). The hobbing assembly includes a plurality of fixed shafts (220) arranged circumferentially spaced along the assembly space (111), each fixed shaft (220) being fitted with a freely rotatable annular hob (210), at least a portion of the annular hob (210) protruding radially from the first cylindrical portion (110). Wear-resistant pads (300) are provided on each of the fixed shafts (220), and the wear-resistant pads (300) are sandwiched between the annular hob (210) and the rear wall of the assembly space (111) along the direction from the tail of the body to the head of the body.

2. The calendering apparatus according to claim 1, characterized in that, The main body (100) includes a first cylindrical portion (110), a second cylindrical portion (120), a connecting portion (130), a tapered portion (140), and a locking portion (150) connected in sequence. The assembly space (111) is located at the end of the first cylindrical portion (110) away from the second cylindrical portion (120). The locking portion (150) can be locked in place with the locking assembly of the machine tool.

3. The calendering apparatus according to claim 2, characterized in that, Along the direction from the locking portion (150) to the connecting portion (130), the diameter of the tapered portion (140) gradually increases.

4. The calendering apparatus according to claim 2, characterized in that, The diameter of the second cylindrical portion (120) is larger than the diameter of the first cylindrical portion (110).

5. The calendering apparatus according to claim 2, characterized in that, The connecting part (130) is provided with a first mating groove (131) in the circumferential direction.

6. The calendering apparatus according to claim 2, characterized in that, The locking part (150) is provided with a second mating groove (151) in the circumferential direction.

7. The calendering apparatus according to claim 2, characterized in that, The first cylindrical portion (110), the second cylindrical portion (120), the connecting portion (130) and the conical portion (140) are integrally formed, and the locking portion (150) is fixedly connected to the conical portion (140).

8. The burnishing apparatus according to any one of claims 1-7, characterized in that, The burnishing device further includes an adjustment assembly configured to adjust the position of the fixed shaft (220) radially along the assembly space (111) to change the radial protrusion of the annular hob (210) relative to the first cylindrical portion (110).

9. The calendering apparatus according to claim 8, characterized in that, The adjustment component includes an adjustment block (410), which is disposed at one end of the main body (100) where the hobbing assembly is mounted. The adjustment block (410) and the fixed shaft (220) are engaged by a wedge structure.

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