Shaft sleeve inner diameter mirror surface machining extrusion cutter

Abstract

The utility model relates to the technical field of shaft sleeve machining, in particular to a shaft sleeve inner diameter mirror surface machining extrusion cutter. The retainer is rotationally connected to one end of the size adjusting seat; the bearing is mounted between the size adjusting seat and the retainer; the roller pin is connected to the retainer in a sliding manner; the control assembly is used for controlling the roller pin to move; the control assembly comprises a mandrel, a sleeve and an installation part, wherein the sleeve is connected to the interior of the retainer in a sliding mode and used for installing the roller pin, the installation part is used for controlling the position of the sleeve, and the roller pin is rotationally connected to the sleeve. The method has the effects of reducing the roughness of the inner diameter surface of the shaft sleeve and improving the precision of the inner diameter surface of the shaft sleeve.

Description

Technical Field

[0001] The present application relates to the technical field of shaft sleeve processing, and in particular to an extrusion tool for mirror processing of the inner diameter of a shaft sleeve. Background Art

[0002] A sleeve is a tube fixed on the shaft to protect the shaft and bearings. It supports and protects the bearings and reduces wear. It is widely used in various machinery and equipment, such as automobiles, railways, ships, excavators, steel, and mining. After the hole is milled, the inner diameter surface of the sleeve is generally rough and has low precision, which makes the matching precision between the sleeve and the shaft low. At the same time, the rough surface of the inner diameter of the sleeve increases the friction resistance, making the stress distribution on the inner diameter surface of the sleeve uneven, resulting in reduced wear resistance of the sleeve and reduced overall quality. Utility Model Content

[0003] In order to reduce the roughness of the inner diameter surface of the sleeve and improve the accuracy of the inner diameter surface of the sleeve, the present application provides an extrusion tool for mirror-finishing the inner diameter of the sleeve.

[0004] The present application provides a shaft sleeve inner diameter mirror processing extrusion cutter adopts the following technical solution:

[0005] A shaft sleeve inner diameter mirror finishing extrusion tool comprises a size adjustment seat, a retaining frame rotatably connected to one end of the size adjustment seat, a bearing installed between the size adjustment seat and the retaining frame, a needle roller slidably connected to the retaining frame, a control component for controlling the movement of the needle roller, and a tool handle installed at one end of the size adjustment seat away from the retaining frame, the control component comprises a core shaft, a sleeve slidably connected to the inside of the retaining frame for mounting the needle roller, and a mounting piece for controlling the position of the sleeve, the needle roller is rotatably connected to the sleeve, and the interior of the retaining frame is hollow and cylindrical.

[0006] By adopting the above technical solution, when in use, the staff fixes the sleeve to be polished and the tool handle on the machine tool, operates the machine tool to make the sleeve rotate at high speed, and the tool handle drives the retaining frame to gradually move toward the sleeve, so that the needle roller is squeezed into the inner hole of the sleeve, and the needle roller contacts the inner diameter surface of the sleeve to generate rolling friction, and the inner diameter surface of the sleeve is extruded and polished. When encountering larger burrs or large friction resistance inside the sleeve, the retaining frame rotates to disperse the heat generated by the friction, thereby reducing the possibility of the retaining frame getting stuck, so that the extrusion and polishing work of the needle roller can be carried out smoothly, and the accuracy of the inner diameter surface of the sleeve is improved.

[0007] Optionally, the side wall of the retainer is provided with slots for the needle roller to move, and a plurality of needle rollers are arranged at intervals along the circumference of the retainer, and the width of the slots is the same as the diameter of the needle roller.

[0008] By adopting the above technical solution, when in use, the staff operates the installation part to make the sleeve move radially, drive the needle roller to move, and make the needle roller gradually move out of the slide groove, so that burrs of different sizes can be squeezed and polished, thereby improving the applicability of the needle roller.

[0009] Optionally, the core shaft includes an abutment block and a screw fixedly connected between the abutment block and the tool handle, and the abutment block is in a truncated cone shape.

[0010] Optionally, the mounting member comprises an adjustment ring threadedly connected to the screw rod.

[0011] By adopting the above technical solution, the staff rotates the adjustment ring to control the relative position of the retaining frame and the core shaft.

[0012] Optionally, the outer wall of the sleeve is cylindrical, the inner wall is frustum-shaped, and the sleeve includes four movable parts whose side walls abut against each other.

[0013] By adopting the above technical solution, when in use, the staff rotates the adjustment ring, and the moving part moves radially on the horizontal plane under the action of the abutment block, thereby controlling the size of the needle roller exposed outside the cage.

[0014] Optionally, a mounting groove for the needle roller to be embedded is formed on the side of the movable member close to the retaining frame, a plurality of sliders are arranged between the movable member and the retaining frame, a movable groove for the slider to slide is formed on the side of the movable member close to the retaining frame, a fixed groove for the slider to be embedded is formed on the inner wall of the retaining frame, and one end of the slider is fixedly connected to the fixed groove.

[0015] By adopting the above technical solution, when in use, the staff rotates the adjustment ring to change the relative position of the retaining frame and the core shaft. Under the action of the abutment block, the moving part moves, that is, the slider slides in the moving groove, so that the needle roller moves out of the slide groove.

[0016] Optionally, the size adjustment seat includes an upper mounting shell rotatably connected to the side of the adjustment ring away from the knife handle, a connecting portion arranged on the inner wall of the upper mounting shell, and a lower mounting shell fixedly connected to the side of the adjustment ring close to the knife handle.

[0017] Optionally, the connecting portion includes a first connecting block fixedly connected to the inner wall of the upper mounting shell and a second connecting block fixedly connected to a side of the first connecting block close to the adjusting ring, and the adjusting ring is provided with a positioning groove for the second connecting block to be embedded.

[0018] By adopting the above technical solution, when in use, the upper mounting shell is rotatably connected to the adjusting ring.

[0019] Optionally, a positioning member for fixing the size adjustment seat is provided between the tool handle and the size adjustment seat.

[0020] By adopting the above technical solution, when in use, the staff rotates the adjustment ring to adjust the exposed size of the needle roller, and then operates the positioning piece to fix the position of the adjustment ring, thereby reducing the rotation of the adjustment ring during the process of the needle roller extruding and grinding the inner diameter surface of the sleeve, which causes the position of the needle roller to change.

[0021] Optionally, the positioning member includes a latching tooth arranged on one end of the lower mounting shell close to the knife handle, a locking ring slidably connected to the screw, and a locking nut threadedly connected to the screw, and a locking groove for the latching tooth to be embedded in the locking ring is opened on one side of the lower mounting shell close to the lower mounting shell.

[0022] By adopting the above technical solution, when in use, the staff slides the locking ring so that the locking teeth are embedded in the slots, and rotates the locking nut so that the locking nut abuts against one side of the locking ring, thereby fixing the position of the adjustment ring.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The present application provides a needle roller and a retainer, so that the needle roller rotates under the action of friction after contacting the inner diameter surface of the sleeve, thereby grinding the inner diameter surface of the sleeve and improving the accuracy of the inner diameter surface of the sleeve. In addition, because the retainer is rotatably connected to the size adjustment seat, when the friction difference is too large, the retainer rotates accordingly, so that the heat generated by friction is dispersed, thereby improving the smoothness of the needle roller during extrusion grinding;

[0025] 2. The present application sets a control component so that the staff can control the relative position of the retainer and the mandrel by rotating the adjustment ring. When the driving force of the abutment block acts on the moving part, the moving part moves radially under the cooperation of the slider and the moving groove, thereby controlling the size of the needle roller connected to the moving part outside the slide groove, so that the needle roller can squeeze and grind burrs of different sizes, thereby improving the accuracy of the inner diameter surface of the sleeve;

[0026] 3. The present application sets a positioning piece, and sets a latch tooth and a latch groove, so that when the staff adjusts the position of the needle roller, the latch tooth is embedded in the latch groove, and the locking nut is rotated so that the latch tooth cannot be moved out of the latch groove, so as to fix the position of the adjustment ring, thereby reducing the movement of the needle roller when the needle roller squeezes and grinds the inner diameter surface of the sleeve, thereby improving the grinding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of this application.

[0028] Figure 2 It is a cross-sectional schematic diagram of this application.

[0029] Figure 3 yes Figure 2 A magnified schematic diagram of center A.

[0030] Explanation of the accompanying drawings: 1. size adjustment seat; 11. upper mounting shell; 12. connecting part; 121. first connecting block; 122. second connecting block; 13. lower mounting shell; 2. retaining frame; 21. slide groove; 22. connecting hole; 3. bearing; 4. needle roller; 5. control assembly; 51. spindle; 511. abutment block; 512. screw; 52. sleeve; 521. moving part; 522. mounting groove; 523. slider; 524. moving groove; 525. auxiliary block; 526. blocking block; 53. mounting part; 531. adjusting ring; 532. positioning groove; 6. tool handle; 7. positioning part; 71. tooth; 72. locking ring; 721. slot; 73. locking nut. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 This application is described in further detail.

[0032] The present application embodiment discloses a shaft sleeve inner diameter mirror processing extrusion tool. Figure 1 and Figure 2 A shaft sleeve inner diameter mirror processing extrusion tool comprises a size adjustment seat 1, a retaining frame 2 rotatably connected to one end of the size adjustment seat 1, a bearing 3 installed between the size adjustment seat 1 and the retaining frame 2, a needle roller 4 slidably connected to the retaining frame 2, a control component 5 for controlling the movement of the needle roller 4, and a tool handle 6 installed on the size adjustment seat 1 away from the retaining frame and slidably connected to one end of the retaining frame. The retaining frame 2 is penetrated at the end of the size adjustment seat 1, the outer ring of the bearing 3 is fixedly connected to the inner wall of the size adjustment seat 1, the inner ring of the bearing 3 is fixedly connected to the outer wall of the retaining frame 2, four needle rollers 4 are arranged at intervals, and the needle roller 4 is a smooth-surfaced cylinder.

[0033] Reference Figure 2 The control assembly 5 includes a core shaft 51, a sleeve 52 slidably connected to the inside of the retainer 2, and a mounting member 53 for controlling the relative position of the moving member 521 and the retainer 2. The needle roller 4 is rotatably connected to the side wall of the sleeve 52 close to the retainer 2. The interior of the retainer 2 is hollow and cylindrical as a whole. Four slide grooves 21 for the needle roller 4 to move through are circumferentially spaced on the side wall of the retainer 2. The width of the slide groove 21 is the same as the diameter of the needle roller 4. A connecting hole 22 for the core shaft 51 to pass through is provided at the end of the retainer 2 away from the tool handle 6. One end of the core shaft 51 passes through the retainer 2 and the axis of the core shaft 51 coincides with the axis of the retainer 2 and the axis of the moving member 521.

[0034] When in use, the staff fixes the tool handle 6 on the machine tool and installs the unpolished sleeve after milling the hole on the machine tool. At this time, the axis of the core shaft 51 and the axis of the sleeve are on the same straight line. The staff operates the machine tool to make the sleeve rotate at high speed, and then operates the machine tool to move the tool handle 6 toward the sleeve, that is, the sleeve inner diameter mirror extrusion knife in the present application moves toward the sleeve. When the needle roller 4 contacts the inner wall of the sleeve, the needle roller 4 rotates under the action of friction, and the staff operates the tool handle 6 to continue moving. At this time, the needle roller 4 is squeezed with the inner wall of the sleeve. Due to the high rotation speed of the sleeve, if the needle roller 4 encounters a large resistance while rotating, the retaining frame 2 rotates, thereby dissipating the heat generated by high-speed friction, reducing the possibility of friction welding, making the inner diameter of the sleeve more fully ground, and improving the accuracy of the inner diameter surface of the sleeve.

[0035] Reference Figure 1 and Figure 2 The core shaft 51 includes an abutment block 511 and a screw rod 512 fixedly connected to the side of the abutment block 511 away from the connecting hole 22. The tool handle 6 is fixedly connected to the end of the screw rod 512 away from the abutment block 511. The abutment block 511 is a truncated cone, wherein the circular surface of the end of the abutment block 511 away from the screw rod 512 has a smaller diameter. The mounting member 53 includes an adjusting ring 531 threadedly connected to the screw rod 512.

[0036] The size adjustment seat 1 includes an upper mounting shell 11 rotatably connected to the side of the adjusting ring 531 close to the abutment block 511, a connecting portion 12 arranged on the inner wall of the upper mounting shell 11, and a lower mounting shell 13 fixedly connected to the side of the adjusting ring 531 away from the abutment block 511. The connecting portion 12 includes a first connecting block 121 fixedly connected to the inner wall of the upper mounting shell 11 and a second connecting block 122 fixedly connected to the side of the first connecting block 121 close to the adjusting ring 531. The longitudinal section of the first connecting block 121 is L-shaped, and the longitudinal section of the second connecting block 122 is inverted T-shaped. The first connecting block 121 and the second connecting block 122 are integrally formed. A positioning groove 532 is provided on the adjusting ring 531 for the second connecting block 122 to be embedded. It can be understood that the positioning groove 532 is a T-shaped groove.

[0037] When in use, the staff rotates the adjustment ring 531, and the adjustment ring 531 drives the size adjustment seat 1 to move toward the side of the tool handle 6. At this time, the end of the abutment block 511 moves out of the connecting hole 22. Under the action of the abutment block 511, the sleeve 52 moves, so that the needle roller 4 gradually moves out of the slide groove 21, and the area of ​​the needle roller 4 exposed outside the retaining frame 2 gradually increases, so that burrs of different sizes on the inner diameter surface of the sleeve can be ground, thereby improving the grinding accuracy of the inner diameter mirror of the sleeve.

[0038] Reference Figure 2 and Figure 3The outer wall of the sleeve 52 is cylindrical, the inner wall of the sleeve 52 is truncated cone, and the inner wall of the sleeve 52 has the same inclination angle as the outer wall of the abutment block 511. The sleeve 52 includes four moving parts 521, each moving part 521 is a quarter of the sleeve 52, and the moving part 521 is provided with a mounting groove 522 for the needle roller 4 to be embedded on the side close to the retaining frame 2. A plurality of sliders 523 are arranged between the moving part 521 and the retaining frame 2. The moving part 521 is provided with two moving grooves 524 for the slider 523 to slide on the side close to the retaining frame 2. The two moving grooves 524 are respectively located at the two ends of the mounting groove 522. The inner wall of the retaining frame 2 is provided with a fixed groove (not shown in the figure) for the slider 523 to be embedded, and one end of the slider 523 is fixedly connected to the fixed groove.

[0039] When in use, the staff rotates the adjusting ring 531, and the adjusting ring 531 moves toward the side of the tool handle 6, driving the size adjustment seat 1 connected to the adjusting ring 531 to move. At this time, the abutment block 511 moves toward the connecting hole 22, and the abutment force of the abutment block 511 on the moving part 521 increases. Under the limitation of the slider 523, the moving part 521 moves radially along the cross-section of the retaining frame 2, thereby driving the needle roller 4 to move toward the slide groove 21, so that the exposed part of the needle roller 4 becomes larger and larger, so that the staff can grind burrs of different sizes on the inner diameter surface of the sleeve.

[0040] Reference Figure 3 In order to reduce the possibility of the slider 523 sliding out of the moving groove 524 and reduce the possibility of the moving member 521 detaching from the slider 523 due to the movement of the core shaft 51, auxiliary blocks 525 are fixedly connected on the opposite sides of the slider 523, and the auxiliary block 525 is located at the end of the slider 523 close to the abutment block 511. Stopping blocks 526 are fixedly connected on the opposite inner walls of the moving groove 524, and the stopping block 526 is located at the end of the moving groove 524 away from the abutment block 511. When the slider 523 moves to the extreme position, the auxiliary block 525 abuts against the stopping block 526, thereby reducing the possibility of the slider 523 detaching from the moving groove 524, making the position of the moving member 521 and the retaining frame 2 more stable.

[0041] Reference Figure 1 and Figure 2 In order to reduce the movement of the needle roller 4 during the grinding of the inner diameter surface of the sleeve by the needle roller 4, a positioning member 7 for fixing the size adjustment seat 1 is provided between the tool handle 6 and the size adjustment seat 1. The positioning member 7 includes a latch 71 provided at the end of the lower mounting shell 13 away from the adjustment ring 531, a locking ring 72 slidably connected to the screw rod 512, and a locking nut 73 threadedly connected to the screw rod 512. The locking ring 72 is provided with a slot 721 for the latch 71 to be embedded in the side close to the lower mounting shell 13.

[0042] When in use, the staff locks the locking ring 72 and the lower mounting shell 13 together, and then rotates the locking nut 73 so that the locking nut 73 moves to abut against the locking ring 72, thereby fixing the position of the lower mounting shell 13. Since the adjustment ring 531 and the lower mounting shell 13 are fixedly connected, the position of the adjustment ring 531 is fixed and the adjustment ring 531 cannot rotate, thereby fixing the position of the needle roller 4.

[0043] The implementation principle of the extrusion tool for mirror finishing the inner diameter of the sleeve in the embodiment of the present application is as follows: when in use, the staff fixes the tool handle 6 and the sleeve on the machine tool, rotates the adjustment ring 531 to adjust the size of the needle roller 4 exposed on the outside of the retaining frame 2 according to the size of the inner diameter of the sleeve and the size of the burr, then slides the locking ring 72 to make the locking tooth 71 embed into the slot 721, rotates the locking nut 73 so that the locking nut 73 abuts against the locking ring 72, thereby reducing the possibility of the adjustment ring 531 rotating when the needle roller 4 is ground. Then the staff operates the machine tool to make the sleeve rotate at high speed, the tool handle 6 moves toward the sleeve, the needle roller 4 squeezes into the sleeve and rotates under the action of friction, the staff applies force on the needle roller 4, and the needle roller 4 grinds the inner diameter surface of the sleeve, thereby improving the accuracy of the inner diameter surface of the sleeve. At the same time, when the friction difference is too large, the retaining frame 2 rotates accordingly, so that the friction heat is dispersed, reducing the possibility of the retaining frame 2 being stuck.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A shaft sleeve inner diameter mirror processing extrusion cutter, characterized in that: The invention comprises a size adjustment seat (1), a retaining frame (2) rotatably connected to one end of the size adjustment seat (1), a bearing (3) installed between the size adjustment seat (1) and the retaining frame (2), a needle roller (4) slidably connected to the retaining frame (2), a control component (5) for controlling the movement of the needle roller (4), and a tool handle (6) installed at one end of the size adjustment seat (1) away from the retaining frame (2), wherein the control component (5) comprises a core shaft (51), a sleeve (52) slidably connected to the inside of the retaining frame (2) for mounting the needle roller (4), and a mounting member (53) for controlling the position of the sleeve (52); the needle roller (4) is rotatably connected to the sleeve (52), and the inside of the retaining frame (2) is hollow and cylindrical.

2. The extrusion cutter for mirror-finishing the inner diameter of a sleeve according to claim 1, characterized in that: Slide grooves (21) for the needle rollers (4) to move are arranged at intervals on the side walls of the retaining frame (2), and a plurality of needle rollers (4) are arranged at intervals along the circumference of the retaining frame (2), and the width of the slide grooves (21) is the same as the diameter of the needle rollers (4).

3. The extrusion cutter for mirror-finishing the inner diameter of a sleeve according to claim 1, characterized in that: The core shaft (51) comprises an abutment block (511) and a screw rod (512) fixedly connected between the abutment block (511) and the tool handle (6); the abutment block (511) is in a truncated cone shape.

4. The extrusion cutter for mirror-finishing the inner diameter of a sleeve according to claim 3, characterized in that: The mounting member (53) comprises an adjusting ring (531) threadedly connected to the screw rod (512).

5. The extrusion cutter for mirror-finishing the inner diameter of a sleeve according to claim 4, characterized in that: The outer wall of the sleeve (52) is cylindrical, and the inner wall is truncated cone-shaped. The sleeve (52) comprises four moving parts (521) whose side walls abut against each other.

6. The extrusion cutter for mirror-finishing the inner diameter of a sleeve according to claim 5, characterized in that: The movable member (521) is provided with a mounting groove (522) on the side close to the retaining frame (2) for the needle roller (4) to be embedded, a plurality of sliders (523) are arranged between the movable member (521) and the retaining frame (2), the movable member (521) is provided with a movable groove (524) on the side close to the retaining frame (2) for the sliders (523) to slide, and the inner wall of the retaining frame (2) is provided with a fixed groove on which the sliders (523) are embedded, and one end of the slider (523) is fixedly connected to the fixed groove.

7. The extrusion cutter for mirror-finishing the inner diameter of a sleeve according to claim 5, characterized in that: The size adjustment seat (1) comprises an upper mounting shell (11) rotatably connected to a side of the adjustment ring (531) away from the knife handle (6), a connecting portion (12) arranged on the inner wall of the upper mounting shell (11), and a lower mounting shell (13) fixedly connected to a side of the adjustment ring (531) close to the knife handle (6).

8. The extrusion cutter for mirror-finishing the inner diameter of a sleeve according to claim 7, characterized in that: The connecting portion (12) comprises a first connecting block (121) fixedly connected to the inner wall of the upper mounting shell (11) and a second connecting block (122) fixedly connected to the first connecting block (121) on a side close to the adjusting ring (531); the adjusting ring (531) is provided with a positioning groove (532) for the second connecting block (122) to be embedded.

9. The extrusion cutter for mirror-finishing the inner diameter of a sleeve according to claim 8, characterized in that: A positioning member (7) for fixing the size adjustment seat (1) is provided between the knife handle (6) and the size adjustment seat (1).

10. The extrusion cutter for mirror-finishing the inner diameter of a sleeve according to claim 9, characterized in that: The positioning member (7) comprises a latching tooth (71) arranged at one end of the lower mounting shell (13) close to the knife handle (6), a locking ring (72) slidably connected to the screw rod (512), and a locking nut (73) threadedly connected to the screw rod (512); a latching groove (721) for the latching tooth (71) to be embedded is provided on one side of the locking ring (72) close to the lower mounting shell (13).

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