Hub turning device

Abstract

The invention relates to the technical field of automobile hub equipment manufacturing, and discloses a hub turning device. Comprising a positioning face, an end face thrust ring, a wedge sliding block mechanism, a main cutter handle, an auxiliary cutter handle, a cutter bar, a locking structure and a cutter. By arranging the wedge sliding block mechanism, the annular sleeve is driven to rotate around the annular rod by means of pressure generated by a pull claw when the main shaft is installed originally, the supporting rod is pressed downwards to push the sliding block mechanism to slide towards the outer side, the end face thrust ring is pressed upwards to push the end face thrust ring to press the main shaft, and the end face thrust ring in the cutter handle is driven to press the end face of the main shaft during installation; the stability of the cutter can be greatly improved; and hydraulic oil is additionally arranged in the sliding block, and the hydraulic oil is extruded again in the moving and pressing process of the wedge sliding block mechanism, so that the hydraulic oil reacts on the end face thrust ring, and the end face thrust ring is attached and pressed to the end face of the main shaft again. The structure of the main shaft system is not required to be changed, only the structure of the knife handle system is secondarily changed, and most market requirements can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile wheel hub equipment manufacturing, and more particularly to a wheel hub turning device. Background Art

[0002] The wheel hub turning device is a key device for machining automobile wheel hubs in the automotive field, mainly including a spindle system, a tool holder system, a fixture system, a control system, etc.; the tool holder system among them is composed of a tool holder body, a clamping part, a cutting part and a locking part.

[0003] The tool holders in existing wheel hub turning devices are roughly divided into two types: BT tool holders and HSK tool holders: 1. The BT tool holder adopts a single-sided taper positioning system, that is, the tool holder and the spindle surface are only pressed by contacting through one end face. The process is simple and the corresponding spindle is the most widely produced on the market, and it can be applied to many processing scenarios; however, due to its adoption of only a single-sided taper positioning system, and the traditional end face of the spindle and the tool holder does not fit tightly enough. When the rotational speed is too high and precise machining is required, the single-sided contact cannot resist a large centrifugal force, resulting in poor stiffness, causing vibration and machining errors; 2. The HSK tool holder adopts a double-layer positioning system, that is, the tool holder and the spindle are pressed by contacting through the taper surface and the end face, significantly improving the connection stiffness between the tool holder and the spindle, and effectively suppressing vibration and displacement during work, and is mostly used in high-precision machining and production; however, due to the setting of the double-sided positioning system, the taper of the tool holder is changed, resulting in its inability to be compatible with most spindles on the market, and a special spindle needs to be used to match it, and the manufacturing precision requirements are high, and maintenance and manufacturing are difficult. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a wheel hub turning device to solve the problems existing in the above-mentioned background art.

[0005] The present invention provides the following technical solution: A wheel hub turning device, including a positioning surface, characterized in that a thrust ring is lapped on one side of the surface of the positioning surface close to the bottom; the bottom of the thrust ring is in contact connection with a wedge slider mechanism; the bottom slot of the wedge slider mechanism is in contact connection with a main tool holder; the bottom of the main tool holder is fixedly connected with a sub-tool holder; the bottom of the sub-tool holder is fixedly connected with a tool rod; the bottom of the tool rod is threadedly connected with a locking structure; the bottom of the locking structure is threadedly connected with a tool.

[0006] Further, the top of the wedge slider mechanism is in contact connection with a spindle; a first pressure rod is fixedly connected to the inner top of the spindle; a second spring is fixedly connected to the bottom of the first pressure rod; two sides of the second spring are fixedly connected with claws at the bottom of the first pressure rod; the bottom of the claw is snap-connected with a raised pressure rod.

[0007] Furthermore, the wedge slider mechanism includes: a round rod, an annular sleeve, a support rod, a sliding mechanism, a thin straight rod, a thick straight rod, a chute, and a slider mechanism; a chute is provided at the top of the main tool shank; the chute is connected to the slider mechanism by a card slot; a thick straight rod is fixedly connected to one side of the slider mechanism close to the central axis of the main tool shank; the thick straight rod is fixedly connected to the sliding mechanism; the sliding mechanism is slidably connected to the thin straight rod; the sliding mechanism is fixedly connected to the support rod; the sliding mechanism is fixedly connected to the annular sleeve; the annular sleeve is rotatably connected to the round rod, and a convex pressing rod is fixedly connected to the top of the wedge slider mechanism.

[0008] Furthermore, the sliding mechanism includes: an annular sleeve and a support frame; the bottom end of the support rod is fixedly connected to the support frame; the support frame is rotatably connected to the annular sleeve; the thin straight rod is sleeved outside the thick straight rod.

[0009] Furthermore, the slider mechanism includes: a wedge-shaped cylinder, a piston, an oil cavity, an oil cavity cover, and a first spring; the thin straight rod is fixedly connected to the first spring; the bottom of the first spring is piston-connected to the oil cavity cover; an oil cavity is provided on one side of the slider mechanism close to the bottom; the top of the oil cavity is connected to the piston; the top end of the piston is fixedly connected to the first spring; the top end of the first spring is fixedly connected to the wedge-shaped cylinder.

[0010] Furthermore, the annular sleeve has two stages during rotation. The first stage has a rotation angle of 0° to 20°, and at this time, the corresponding wedge slider mechanism is in the stage of contacting the end face thrust ring and being slightly compressed; the second stage has a rotation angle of 20° to 35°, and at this time, the corresponding wedge-shaped slider mechanism is in the stage of further compressing the end face thrust ring, and the corresponding slider mechanism will be compressed by the end face thrust ring and in turn continue to act on the end face thrust ring to make it squeeze the main shaft more tightly.

[0011] Furthermore, the first spring is in a pre-compressed state, and the generated pre-pressure can balance the residual pressure inside the hydraulic oil and keep the oil cavity inside the slider mechanism closed.

[0012] The technical effects and advantages of the present invention: 1. By providing a wedge slider mechanism, the present invention borrows the pressure generated by the claw during the original installation of the main shaft, drives the annular sleeve to rotate around the round rod, presses down the support rod to push the slider mechanism to slide outward, and then presses up the end face thrust ring to push it against the main shaft tightly. Without additional external force, the end face thrust ring inside the tool shank system can be driven to press against the end face of the main shaft during installation. Compared with the traditional BT tool shank, the stability of the tool can be greatly improved.

[0013] 2. The present invention is provided with a slider mechanism, and hydraulic oil is added inside the slider. During the movement and pressing process of the inclined wedge slider mechanism, the hydraulic oil is extruded again, generating pressure inside it, so that the oil chamber cover expands outward and extrudes, and then pushes the end face thrust ring to fit against the end face of the main shaft again. Without changing the structure of the main shaft, only making secondary changes to the structure of the tool holder system can better meet the market demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the structure of the main shaft system of the present invention; Figure 3 is an exploded schematic diagram of the tool holder system of the present invention; Figure 4 is a schematic diagram of the structure of the inclined wedge slider mechanism of the present invention; Figure 5 is a schematic diagram of the structure of the sliding structure of the present invention; Figure 6 is a cross-sectional view of the slider mechanism of the present invention.

[0015] The reference numerals are: 1, positioning surface; 2, end face thrust ring; 3, inclined wedge slider mechanism; 301, round rod; 302, annular sleeve; 303, support rod; 304, sliding mechanism; 3041, annular sleeve; 3042, support frame; 305, thin straight rod; 306, thick straight rod; 307, chute; 308, slider mechanism; 3081, wedge-shaped cylinder; 3082, piston; 3083, oil chamber; 3084, oil chamber cover; 3085, spring one; 4, main tool holder; 5, sub-tool holder; 6, tool bar; 7, locking structure; 8, tool; 9, main shaft; 10, pressure rod one; 11, pull claw; 12, spring two; 13, convex pressure rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples, and the hub turning device related to the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0017] Refer to Figures 1 to 6, the present invention provides a wheel hub turning device, including a positioning surface 1, characterized in that a face thrust ring 2 is lapped on one side of the surface of the positioning surface 1 close to the bottom; a wedge slider mechanism 3 is in contact connection with the bottom of the face thrust ring 2; the bottom of the wedge slider mechanism 3 is connected to a main tool holder 4 through a card slot; a secondary tool holder 5 is fixedly connected to the bottom of the main tool holder 4; a tool bar 6 is fixedly connected to the bottom of the secondary tool holder 5; a locking structure 7 is connected to the bottom of the tool bar 6 through a thread; a tool 8 is connected to the bottom of the locking structure 7 through a thread.

[0018] Among them, the positioning surface 1, the face thrust ring 2, the wedge slider mechanism 3, the main tool holder 4, the secondary tool holder 5, the tool bar 6, the locking structure 7, and the tool 8 together constitute the tool holder system of the wheel hub turning device. The tool holder system needs to be installed on the corresponding spindle system to achieve the turning cutting function. This structure is an improvement based on the existing BT tool holder and can adapt to most spindle systems on the market.

[0019] Among them, the top of the wedge slider mechanism 3 is in contact connection with a spindle 9; a first pressure rod 10 is fixedly connected to the inner top of the spindle 9; a second spring 12 is fixedly connected to the bottom of the first pressure rod 10; a claw 11 is fixedly connected to both sides of the second spring 12 at the bottom of the first pressure rod 10; a protruding pressure rod 13 is snap-connected to the bottom of the claw 11.

[0020] Among them, the spindle 9, the first pressure rod 10, the second spring 12, and the claw 11 together constitute the spindle system of the wheel hub turning device. The spindle 9 is snap-connected to the wedge slider mechanism 3 through the claw 11, that is, the spindle system is connected to the tool holder system.

[0021] Among them, the wedge slider mechanism 3 includes: a round rod 301, an annular sleeve 302, a support rod 303, a sliding mechanism 304, a thin straight rod 305, a thick straight rod 306, a chute 307, and a slider mechanism 308; a chute 307 is opened at the top of the main tool holder 4; the chute 307 is connected to the slider mechanism 308 through a card slot; a thick straight rod 306 is fixedly connected to one side of the slider mechanism 308 close to the central axis of the main tool holder 4; the thick straight rod 306 is fixedly connected to the sliding mechanism 304; the sliding mechanism 304 is slidably connected to the thin straight rod 305; the sliding mechanism 304 is fixedly connected to the support rod 303; the sliding mechanism 304 is fixedly connected to the annular sleeve 302; the annular sleeve 302 is rotatably connected to the round rod 301, and a protruding pressure rod 13 is fixedly connected to the top of the wedge slider mechanism 3.

[0022] Among them, when the spindle system is connected to the tool holder system, the spindle 9 of the spindle system is vertically pressed and docked onto the positioning surface 1 of the tool holder system. The draw claw 11 is subjected to a resistance force. After pressing forcefully, the draw claw 11 will be clamped onto the top of the convex pressure rod 13. At the same time, the second spring 12 will further continue to squeeze the convex pressure rod 13. At this time, the connection between the spindle system and the tool holder system is completed.

[0023] Among them, when the convex pressure rod 13 is subjected to the downward pressure of the draw claw 11, the annular sleeve 302 will rotate along the round rod 301; during the initial compression, that is, when the draw claw 11 just touches the convex pressure rod 13 and has not been clamped yet, the annular sleeve 302 rotates 20° in the vertical direction, pushing the support rod 303 downward. Through the sliding structure 304, the thick straight rod 306 and the slider mechanism 308 are driven to slide in the chute 307 in a direction away from the center; during the sliding, the top of the slider mechanism 308 will gradually touch and squeeze the end face thrust ring 2, making it close to the direction of the spindle 9; after continuous compression, the draw claw 11 is clamped onto the convex pressure rod 13, and the second spring 12 will be compressed and pressed tightly against the top of the convex pressure rod 13, so that the convex pressure rod 13 is firmly fixed and clamped under the draw claw 11. During this process, the annular sleeve 302 continues to rotate around the round rod 301. After the convex pressure rod 13 is fixed, the rotation angle remains at 35°.

[0024] Among them, the sliding mechanism 304 includes: an annular sleeve 3041 and a support frame 3042; the bottom end of the support rod 303 is fixedly connected to the support frame 3042; the support frame 3042 is rotatably connected to the annular sleeve 3041; the thin straight rod 305 is sleeved outside the thick straight rod 306.

[0025] Among them, when the support rod 303 senses the downward pressure, the sliding mechanism 304 can transmit the pressure and keep the thin straight rod 305 and the slider mechanism 308 moving in the direction of the thick straight rod 306.

[0026] Among them, the slider mechanism 308 includes: a wedge-shaped cylinder 3081, a piston 3082, an oil cavity 3083, an oil cavity cover 3084, and a first spring 3085; the slider mechanism 308 is fixedly connected to the side of the thin straight rod 305 away from the rotating structure; the bottom piston of the slider mechanism 308 is connected to the oil cavity cover 3084; an oil cavity 3083 is opened on one side of the slider mechanism 308 close to the bottom; the top of the oil cavity 3083 is connected to the piston 3082; the top of the piston 3082 is fixedly connected to the first spring 3085; the top of the first spring 3085 is fixedly connected to the wedge-shaped cylinder 3081.

[0027] Among them, when the annular sleeve 302 rotates to an angle of 20°, the end face thrust ring 2 is pushed by the slider mechanism 308 and squeezed onto the wedge-shaped cylinder 3081. As the convex pressure rod 13 continues to be squeezed, the annular sleeve 302 will also continue to rotate. The wedge-shaped cylinder 3081 is subjected to the downward pressure of the end face thrust ring 2, thereby compressing the first spring 3085. The first spring 3085 will continue to squeeze the piston 3082 downward. The hydraulic oil in the oil chamber 3083 is squeezed and will squeeze the oil chamber cover 3084 downward, generating a certain thrust that acts on the end face thrust ring 2 again, strengthening the contact between the end face thrust ring 2 and the main shaft 9.

[0028] Among them, there are two stages in the rotation process of the annular sleeve 302. In the first stage, the rotation angle is from 0° to 20°. At this time, the corresponding inclined wedge slider mechanism 3 is in the stage of contacting the end face thrust ring 2 and being slightly compressed. In the second stage, the rotation angle is from 20° to 35°. At this time, the corresponding inclined wedge-shaped slider mechanism 3 is in the stage of further compressing the end face thrust ring 2, and the corresponding slider mechanism 308 will be compressed by the end face thrust ring 2 and act on the end face thrust ring 2 in turn, making it squeeze more tightly with the main shaft 9.

[0029] Among them, the first spring 3085 is in a pre-compressed state, and the generated pre-pressure can balance the residual pressure inside the hydraulic oil and keep the oil chamber 3083 inside the slider mechanism 308 closed.

[0030] Working principle of the present invention: When the tool holder system needs to be connected to the spindle system for operation, the jaw 11 of the spindle system presses the entire inclined wedge slider mechanism 3. After being subjected to pressure, the round rod 301 descends accordingly, and the support rod 303 moves downward under the action of pressure. At this time, the annular sleeve 302 rotates around the round rod 301 and drives the support rod 303 to move obliquely downward along its rod body direction. The downward pressure of the support rod 303 further pushes the support frame 3042 to move outward away from the center. However, under the restriction of the annular sleeve 3041 and the thick straight rod 306, only the downward pressure transmitted by the support rod 303 is converted into the force expanding outward along the thick straight rod 306, driving the entire sliding mechanism 304, the thin straight rod 305 and the slider mechanism 308 to expand outward along the thick straight rod 306; When an initial pressure is applied and the jaw 11 just contacts the convex pressure rod 13 to generate pressure but has not been clamped, and the rotation angle of the annular sleeve 302 is within 20°, the rotation structure at this time pushes the slider mechanism 308 and the end face thrust ring 2 to gradually contact and generate extrusion, so that it can approach in the direction of the spindle 9; When the pressure continues to increase and the jaw 11 is clamped to the convex pressure rod 13 and the convex pressure rod 13 is tightly fixed by the second spring 12, at this time the annular sleeve 302 rotates to 35°, and the end face thrust ring 2 moves to a certain extent and begins to squeeze the wedge-shaped cylinder 3081. The extrusion effect generated by the inclined wedge slider mechanism 3 has reached the required level. At this time, due to the extrusion of the end face thrust ring 2, the wedge-shaped cylinder 3081 will expand and contract downward, compress the piston 3082 below it through the compression spring 3085, and the piston 3082 continues to be compressed downward under the thrust action, further compressing the hydraulic oil inside the oil chamber 3083. Due to the pressure, the oil chamber cover 3084 is extruded, and the oil chamber cover 3084 generates a certain pressure outward and in turn continues to push and press the end face thrust ring 2, pressing it tightly against the spindle 9, making the end face thrust ring 2 fit more closely to the end face of the spindle 9. The secondary pressing at the end face of the tool holder system and the spindle system can increase the stability of the tool during the actual use of the equipment, enabling it to adapt to more precise structural cutting.

[0031] Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wheel hub turning device, comprising a positioning surface (1), characterized in that: An end thrust ring (2) is overlapped on one side of the surface of the positioning surface (1) close to the bottom; the bottom of the end thrust ring (2) is in contact with an inclined wedge slider mechanism (3); the bottom slot of the inclined wedge slider mechanism (3) is in contact with a main tool handle (4); the bottom of the main tool handle (4) is fixedly connected to an auxiliary tool handle (5); the bottom of the auxiliary tool handle (5) is fixedly connected to a tool rod (6); the bottom of the tool rod (6) is threadedly connected to a locking structure (7); and the bottom of the locking structure (7) is threadedly connected to a tool (8).

2. A wheel hub turning device according to claim 1, characterized in that: The top of the inclined wedge slider mechanism (3) is in contact with a main shaft (9); the inner top of the main shaft (9) is fixedly connected to a pressure rod 1 (10); the bottom of the pressure rod 1 (10) is fixedly connected to a spring 2 (12); both sides of the spring 2 (12) are fixedly connected to a pull claw (11) at the bottom of the pressure rod 1 (10); the bottom of the pull claw (11) is buckled and connected to a protruding pressure rod (13).

3. A wheel hub turning device according to claim 2, characterized in that: The inclined wedge slider mechanism (3) comprises: a round rod (301), an annular sleeve (302), a support rod (303), a sliding mechanism (304), a thin straight rod (305), a thick straight rod (306), a sliding groove (307), and a sliding mechanism (308); the top of the main tool handle (4) is provided with a sliding groove (307); the sliding groove (307) is connected to the sliding mechanism (308); the sliding mechanism (308) is fixedly connected to the side of the main tool handle (4) close to the central axis A thick straight rod (306) is provided; the thick straight rod (306) is fixedly connected to a sliding mechanism (304); the sliding mechanism (304) is slidably connected to a thin straight rod (305); the sliding mechanism (304) is fixedly connected to a support rod (303); the sliding mechanism (304) is fixedly connected to an annular sleeve (302); the annular sleeve (302) is rotatably connected to a round rod (301); and a protruding pressure rod (13) is fixedly connected to the top of the inclined wedge slider mechanism (3).

4. A wheel hub turning device according to claim 3, characterized in that: The sliding mechanism (304) comprises: an annular sleeve (3041) and a support frame (3042); the bottom end of the support rod (303) is fixedly connected to the support frame (3042); the support frame (3042) is rotatably connected to the annular sleeve (3041); and the thin straight rod (305) is sleeved on the outside of the thick straight rod (306).

5. A wheel hub turning device according to claim 3, characterized in that: The slider mechanism (308) comprises: a wedge-shaped cylinder (3081), a piston (3082), an oil chamber (3083), an oil chamber cover (3084), and a spring (3085); the thin straight rod (305) is fixedly connected to the spring (3085); the piston at the bottom of the spring (3085) is connected to the oil chamber cover (3084); an oil chamber (3083) is provided on one side of the spring (3085) close to the bottom; the top of the oil chamber (3083) is connected to the piston (3082); the top of the piston (3082) is fixedly connected to the spring (3085); and the top of the spring (3085) is fixedly connected to the wedge-shaped cylinder (3081).

6. A wheel hub turning device according to claim 3, characterized in that: The annular sleeve (302) has two stages in the rotation process. The first stage has a rotation angle of 0° to 20°, at which time the corresponding inclined wedge slider mechanism (3) is in contact with the end face thrust ring (2) and is slightly compressed; the second stage has a rotation angle of 20° to 35°, at which time the corresponding inclined wedge slider mechanism (3) is in a stage of further compressing the end face thrust ring (2), and the corresponding slider mechanism (308) will be compressed by the end face thrust ring (2), and in turn continue to act on the end face thrust ring (2), so that it is squeezed more tightly with the main shaft (9).

7. A wheel hub turning device according to claim 5, characterized in that: The spring 1 (3085) is in a pre-stressed state, and the generated pre-stress can balance the residual pressure inside the hydraulic oil and keep the oil chamber (3083) inside the slider mechanism (308) closed.

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