A precise drilling tool for the outer diameter of a rotary part

Abstract

The utility model relates to the field of precision drilling frock, disclose a kind of rotary body part outer diameter precision drilling frock, the frock includes fixed axle, fixer, taper head, sliding block and pillar;Rotary body is set in the fixed axle periphery, fixer is located in the fixed axle periphery;Taper head is slidably housed in fixed axle along the axial direction, sliding block is slidably connected in the sliding slot of its outer wall, and sliding block is connected with fixer by pillar. Drive taper head axial movement, can be via sliding block and pillar to drive fixer radial expansion, to clamp rotary body from inside to outside. Frock is also provided with the recovery component consisting of motor and fan, for automatically cleaning swarf. The utility model solves the problem of unstable clamping and easy damage to the surface of workpiece in the prior art by using an inside supporting type clamping mechanism, realizes stable and reliable positioning. At the same time, the active swarf recovery component can automatically clean the machining swarf, improving the machining quality and automation level, with compact structure and comprehensive functions.

Description

Technical Field

[0001] This utility model relates to the field of precision drilling tooling, and in particular to a precision drilling tooling for the outer diameter of a rotating part. Background Technology

[0002] Rotating parts, such as sleeves, flanges, and gear rings, are common core components in the machinery manufacturing industry. During their production, precision drilling is often required on the outer circumferential surface of the parts. To ensure the positional and dimensional accuracy of the drilling, the rotating parts must first be stably and reliably positioned and clamped using specialized tooling.

[0003] In conventional machining processes, general-purpose fixtures such as three-jaw chucks are typically used to clamp rotating parts from the outer diameter direction. While this method is simple and direct, its inherent drawbacks become apparent when the machining task itself involves precision drilling of the part's outer diameter. The clamping jaws directly contact and occupy the outer circumferential surface to be machined. This not only directly interferes with the machining path of the drilling tool but also leaves clamping marks or causes extrusion deformation on the workpiece surface, severely affecting the final surface quality and machining accuracy of the part.

[0004] To avoid damaging the outer surface, the industry has also attempted to adopt clamping methods that provide internal support. However, many existing internal support fixtures have complex structures, poor self-centering performance, or uneven applied support forces. When clamping thin-walled rotating parts, they are prone to causing minor deformations in the workpiece, failing to meet the requirements of precision machining. Furthermore, these internal support fixtures are usually quite sensitive to changes in the inner diameter of the parts, lacking versatility. When machining parts of different specifications, it is often necessary to change the entire set of tooling or key components, reducing production flexibility and efficiency. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a precision drilling fixture for the outer diameter of rotating parts. It aims to improve the problems of unstable positioning when clamping hollow rotating parts, difficulty in adapting to different inner diameters, and easy damage to the outer surface to be processed. This utility model aims to provide a precision drilling fixture for the outer diameter of rotating parts with an improved structure that can effectively solve the above problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a precision drilling fixture for the outer diameter of a rotating part, comprising: a rotating body, a fixed shaft sleeved on the rotating body, a fixture disposed on the outer periphery of the fixed shaft, a cone head housed in a reserved hole in the fixed shaft, a slider slidably connected to the cone head, and a support column connecting the slider and the fixture.

[0007] The fixed shaft has a reserved hole inside for the cone head to slide, and the outer wall of the cone head has a groove for the slider to slide.

[0008] Furthermore, the rotating body is sleeved on the outer periphery of the fixed shaft, the retainer is located on the outer periphery of the fixed shaft and expands radially to abut against the inner wall of the rotating body, the slider is slidably connected in the groove of the cone head, one end of the support column is fixedly connected to the slider, and the other end of the support column is fixedly connected to the retainer, forming a complete internal support clamping transmission mechanism.

[0009] Preferably, the tooling further includes a screw and a column; the bottom of the fixed shaft is threaded with the screw, the end of the screw abuts against one end of the column, and the other end of the column is fixedly connected to the bottom of the cone.

[0010] Preferably, the tooling further includes a fixing plate, and the fixing shaft passes through and is rotatably connected to the fixing plate; the outer wall of the fixing shaft is respectively fitted with a first gasket and a second gasket on both sides of the fixing plate.

[0011] Preferably, the tooling further includes a rotating ring and an adjusting arm; the rotating ring is sleeved on the outer wall of the fixed shaft, and the adjusting arm is fixedly connected to the outer wall of the rotating ring; a limit rod is also connected to the side of the fixed plate.

[0012] Preferably, the tooling further includes a recycling component; the recycling component includes a motor, a drive shaft, and a fan fixed to the outside of the fixed plate; one end of the drive shaft is fixedly connected to the output end of the motor and passes through the fixed plate, and the other end is fixedly connected to the bottom of the fan.

[0013] Preferably, the recycling component further includes a waste storage channel and a waste collection box; the inlet end of the waste storage channel is located on the air outlet path of the fan, and its outlet end is connected to the waste collection box.

[0014] Preferably, the waste collection box is externally fixedly connected to a handle for pulling out the waste collection box.

[0015] Preferably, the tooling further includes a dust baffle, which is installed on the windward side of the fan; the dust baffle has grooves on both sides for the rotation of the adjusting arm.

[0016] Preferably, the tooling further includes a housing, the fixing plate is rotatably mounted on the housing, and the blade is installed inside the housing.

[0017] This utility model has the following beneficial effects: 1. In this utility model, by setting an internal support clamping mechanism that generates radial expansion by driving the slider and the retainer with a cone head, the problems of unstable clamping, poor versatility and easy damage to the outer surface to be processed in the prior art for hollow rotating parts are solved, and the technical effects of stable and reliable clamping, high centering accuracy and no interference with outer diameter processing are achieved.

[0018] 2. This utility model solves the problems of easy accumulation of processing waste, affecting processing accuracy and inconvenient cleaning in the prior art by setting up an active recycling component that uses a motor-driven fan to generate airflow and blow waste into a dedicated channel and collection box. It achieves the technical effects of automatically cleaning waste, protecting the surface of the workpiece, improving processing quality and automation level. Attached Figure Description

[0019] Figure 1 This is a perspective view of a precision drilling fixture for the outer diameter of a rotating part proposed in this utility model. Figure 2 This is a schematic diagram of the fixing component of a precision drilling fixture for the outer diameter of a rotating part, as proposed in this utility model. Figure 3 This is a schematic diagram of a recycling component for a precision drilling fixture for the outer diameter of a rotating part, as proposed in this utility model. Figure 4 for Figure 2 Enlarged view of point A in the middle; Figure 5 This is an exploded view of the fixing component of a precision drilling fixture for the outer diameter of a rotating part, as proposed in this utility model.

[0020] Legend: 1. Fixing component; 2. Recycling component; 3. Blade; 4. Box body; 5. Fixing plate; 6. Limiting rod; 7. Dust shield; 101. Fixing shaft; 102. First gasket; 103. Second gasket; 104. Reserved hole; 105. Rotating ring; 106. Adjusting arm; 107. Rotating body; 108. Fixer; 109. Support column; 110. Slider; 111. Cone; 112. Slide groove; 113. Column; 114. Screw; 201. Motor; 202. Drive shaft; 203. Fan; 204. Groove; 205. Waste storage channel; 206. Handle; 207. Waste collection box. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 5 This utility model provides a precision drilling fixture for the outer diameter of a rotating part, which aims to solve the problems of unstable clamping and positioning of rotating parts, difficulty in adapting to different sizes and easy damage to the surface to be processed, and inconvenience in cleaning up processing waste in the prior art.

[0023] like Figure 1 As shown, the precision drilling fixture for the outer diameter of the rotating part includes a housing 4 and a fixing plate 5 rotatably mounted on the housing 4. A cutting tool 3 is installed inside the housing 4, and a fixing component 1 and a recycling component 2 are integrated on the fixing plate 5. The fixing component 1 is used to stably clamp the rotating part 107, and the recycling component 2 is used to automatically collect the waste generated during the machining process. (Refer to...) Figure 2 , Figure 4 and Figure 5 The fixing assembly 1 includes a rotating body 107, a fixed shaft 101, a retainer 108, a support column 109, a slider 110, a cone 111, a groove 112, and a reserved hole 104. Specifically, the rotating body 107 is sleeved on the outer periphery of the fixed shaft 101, and the reserved hole 104 is opened inside the fixed shaft 101. The retainer 108 is located on the outer periphery of the fixed shaft 101 and is adapted to expand radially to abut against the inner wall of the rotating body 107. The cone 111 can be moved along the cone... The cone 111 is axially slidably housed in the reserved hole 104. The outer wall of the cone 111 is provided with a groove 112. The slider 110 is slidably connected in the groove 112. One end of the support column 109 is fixedly connected to the slider 110, and the other end of the support column 109 is fixedly connected to the retainer 108. Through this series of transmission connections, the axial movement of the cone 111 can drive the retainer 108 to produce radial displacement, thereby achieving the tightening or loosening of the inner wall of the rotating body 107.

[0024] To achieve precise driving of the cone 111, the precision drilling fixture for the outer diameter of the rotating part also includes a screw 114 and a post 113, and the screw 114 and the post 113 form a stable transmission connection with the aforementioned fixed shaft 101 and the cone 111.

[0025] The bottom of the fixed shaft 101 is threaded, and the screw 114 connects to the thread on the bottom of the fixed shaft 101 through its own thread. The post 113 is set in the reserved hole 104. In the assembled state, the post 113 is located between the screw 114 and the cone head 111. One end of the post 113 abuts against the end of the screw 114, and the other end of the post 113 abuts against the bottom of the cone head 111. The function of the post 113 is to transmit the axial thrust generated by the screw 114. When it is necessary to clamp the rotating body 107, it is screwed... Screw 114 moves within the thread of fixed shaft 101, thereby pushing column 113. Column 113 then pushes cone 111 to slide axially along fixed shaft 101 within pre-drilled hole 104. This screw-push rod drive structure, formed by screw 114 and column 113, can precisely convert the rotational motion of screw 114 into the linear motion of cone 111, thus providing a stable and adjustable driving force for the entire fixing assembly 1 and ensuring reliable clamping of rotating bodies 107 of different sizes.

[0026] As a preferred embodiment, in order to achieve the adjustment and installation of the workpiece angle, please refer to... Figure 2 and Figure 5 The tooling also includes a fixing plate 5, and a fixing shaft 101 is inserted through and rotatably connected to the fixing plate 5; the outer wall of the fixing shaft 101 is respectively fitted with a first gasket 102 and a second gasket 103 on both sides of the fixing plate 5; in order to facilitate overall installation and processing, the tooling also includes a housing 4, the fixing plate 5 is rotatably installed on the housing 4, and the inside of the housing 4 is fitted with a blade 3.

[0027] Based on the above, in order to achieve and control the precise adjustment of the angle, the tooling also includes a rotating ring 105 and an adjusting arm 106; the rotating ring 105 is sleeved on the outer wall of the fixed shaft 101, and the adjusting arm 106 is fixedly connected to the outer wall of the rotating ring 105; in order to prevent the rotation angle from being too large, a limit rod 6 is also connected to the side of the fixed plate 5.

[0028] As another preferred embodiment, in order to achieve automatic recycling of waste, the tooling also includes a recycling component 2; the recycling component 2 includes a motor 201, a drive shaft 202 and a fan 203 fixed to the outside of the fixed plate 5; one end of the drive shaft 202 is fixedly connected to the output end of the motor 201 and passes through the fixed plate 5, and the other end of the drive shaft 202 is fixedly connected to the bottom of the fan 203.

[0029] To guide and collect the recycled waste, the recycling component 2 also includes a waste storage channel 205 and a waste collection box 207; the inlet end of the waste storage channel 205 is located on the air outlet path of the fan 203, and the outlet end of the waste storage channel 205 is connected to the waste collection box 207; for easy cleaning, a handle 206 for pulling out the waste collection box 207 is fixedly connected to the outside of the waste collection box 207.

[0030] In order to coordinate the spatial relationship between the recycling component 2 and the angle adjustment structure, the tooling also includes a dust cover 7, which is installed on the windward side of the fan 203; the dust cover 7 has grooves 204 on both sides for the rotation of the adjustment arm 106.

[0031] Working principle: Before processing, the rotating body 107 is first fitted onto the outer circumference of the fixed shaft 101. Then, the screw 114 at the bottom of the fixed shaft 101 is tightened. When the screw 114 is screwed in along the thread, it will push the column 113 axially. The column 113 then pushes the cone 111 to slide axially in the reserved hole 104. Since the slider 110 is slidably connected in the groove 112 on the outer wall of the cone 111, the axial movement of the cone 111 will force the slider 110 to make radial outward displacement along the inclined surface of the groove 112. The slider 110 transmits the radial displacement to the retainer 108 through the support column 109, causing the retainer 108 to expand outward and finally tightly abut against and fix the inner wall of the rotating body 107. After the rotating body 107 is reliably fixed, the rotating ring 105 and the fixed shaft 101 can be rotated as a whole by operating the adjusting arm 106, thereby adjusting the rotating body 107 to the preset processing angle. The limiting rod 6 on the side of the fixed plate 5 can effectively limit the rotation range. After the adjustment is completed, the blade 3 inside the housing 4 performs precision drilling on the outer diameter of the rotating body 107. While drilling, the motor 201 fixed to the outside of the fixed plate 5 is started. The motor 201 drives the fan 203 to rotate through the transmission shaft 202 to generate wind. The waste generated during processing is blown by the wind and guided by the dust cover 7 into the entrance of the waste storage channel 205. Then, it slides down the waste storage channel 205 into the waste collection box 207 below. When it is necessary to clean up the waste, the waste collection box 207 can be pulled out for processing by pulling the handle 206 on the outside of the waste collection box 207.

Claims

1. A precision drilling fixture for the outer diameter of a rotating part, comprising a rotating body (107). The fixing component (1) includes a fixing shaft (101), and the fixing shaft (101) has a reserved hole (104) inside. The retainer (108) is radially movably disposed on the outer periphery of the fixed shaft (101); Its features are, The tooling also includes: A cone (111) is slidably received in the reserved hole (104) along its axial direction, and the outer wall of the cone (111) is provided with a groove (112). A slider (110) is slidably connected within the groove (112); And a support column (109), one end of which is fixedly connected to the slider (110) and the other end is fixedly connected to the fixture (108).

2. The precision drilling fixture for the outer diameter of a rotating part according to claim 1, characterized in that, The tooling also includes a screw (114) and a column (113); the bottom of the fixed shaft (101) is threaded with the screw (114), the end of the screw (114) abuts against one end of the column (113), and the other end of the column (113) is fixedly connected to the bottom of the cone (111).

3. The precision drilling fixture for the outer diameter of a rotating part according to claim 1, characterized in that, The tooling also includes a fixing plate (5), and the fixing shaft (101) passes through and is rotatably connected to the fixing plate (5); the outer wall of the fixing shaft (101) is respectively fitted with a first gasket (102) and a second gasket (103) on both sides of the fixing plate (5).

4. The precision drilling fixture for the outer diameter of a rotating part according to claim 3, characterized in that, The tooling also includes a rotating ring (105) and an adjusting arm (106); the rotating ring (105) is sleeved on the outer wall of the fixed shaft (101), and the adjusting arm (106) is fixedly connected to the outer wall of the rotating ring (105); the side of the fixed plate (5) is also connected to a limit rod (6).

5. A precision drilling fixture for the outer diameter of a rotating part according to claim 3, characterized in that, The tooling also includes a recycling component (2); the recycling component (2) includes a motor (201), a drive shaft (202) and a fan (203) fixed to the outside of the fixed plate (5); one end of the drive shaft (202) is fixedly connected to the output end of the motor (201) and passes through the fixed plate (5), and the other end is fixedly connected to the bottom of the fan (203).

6. A precision drilling fixture for the outer diameter of a rotating part according to claim 5, characterized in that, The recycling component (2) also includes a waste storage channel (205) and a waste collection box (207); the inlet end of the waste storage channel (205) is located on the air outlet path of the fan (203), and its outlet end is connected to the waste collection box (207).

7. A precision drilling fixture for the outer diameter of a rotating part according to claim 6, characterized in that, The waste collection box (207) is externally fixedly connected to a handle (206) for pulling out the waste collection box (207).

8. A precision drilling fixture for the outer diameter of a rotating part according to claim 5, characterized in that, The tooling also includes a dust shield (7), which covers the windward side of the fan (203); the dust shield (7) has grooves (204) on both sides for the rotation of the adjusting arm (106).

9. A precision drilling fixture for the outer diameter of a rotating part according to claim 3, characterized in that, The tooling also includes a housing (4), the fixing plate (5) is rotatably mounted on the housing (4), and the inside of the housing (4) is equipped with a blade (3).

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