Honing machining device

Abstract

The utility model belongs to the technical field of machining, and particularly relates to a honing machining device which comprises a mounting plate, a spindle seat and a vertical plate are arranged on the mounting plate, a hollow spindle is rotatably connected into the spindle seat and driven by a power device to rotate, a honing cutter rod is connected to the lower end of the hollow spindle, and a honing strip is slidably arranged at the lower end of the honing cutter rod in the radial direction. A push rod used for pushing a honing strip outwards is arranged in the honing cutter rod in the vertical direction in a sliding mode, an ejector rod with the lower end abutting against the push rod is arranged in the hollow main shaft in the vertical direction in a sliding mode, the ejector rod is sleeved with a first reset spring used for resetting the ejector rod upwards, a vertical guide rail and a first rotating motor are arranged on the vertical plate, and a sliding block is arranged on the vertical guide rail in a sliding mode. A sliding plate is arranged on the sliding block, the first rotating motor is connected with the sliding plate through a ball screw mechanism, and a pressing block used for being arranged at the upper end of the ejector rod in a pressing mode is arranged on the sliding plate. The push rod moves downwards accurately, honing machining precision is high, and the honing device is suitable for high-precision machining.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical processing technical field, and particularly point to a kind of honing processing device. BACKGROUND

[0002] Chinese utility model patent (announcement number CN212601150U, application date 2020.08.27, announcement date 2021.02.26) discloses a kind of honing head with honing knife overload protection, including rotary servo motor and honing head body, motor base is installed on the honing head body, the rotary servo motor is fixed on motor base by motor connecting plate, synchronous pulley is installed at the lower end of the rotary servo motor, the synchronous pulley is rotated by synchronous belt with sleeve driving;It also includes feed servo motor and speed reducer, the speed reducer is fixed on motor base, the feed servo motor is installed on the upper end of speed reducer, the lower end of the speed reducer is connected with screw rod by torsion sensor;Two screw rod bearings are installed on the upper end of the screw rod, and be pressed by inner sleeve bearing pressing plate, screw rod nut is installed on the screw rod, plug is installed at the lower end of the screw rod nut;Honing knife rod is fixed on the sleeve, fixed block, honing bar and taper rod are installed in the honing knife rod, rely on the feed servo motor and pass the plug on screw rod nut force to taper rod, make the taper surface of taper rod front end move downward, open honing bar in the fixed block.

[0003] The honing head has the following disadvantages: the rotary servo motor only transmits force to the taper rod through the screw rod and the screw rod nut, which makes the taper surface of the taper rod front end move downward. The screw rod nut is easy to shake, which leads to inaccurate movement distance of the screw rod nut and inaccurate movement of the taper rod. As a result, the honing processing precision is not high, which is not suitable for high-precision processing. SUMMARY

[0004] The utility model aims at providing a kind of honing processing device, its push rod is accurate, honing processing precision is high, is suitable for high-precision processing.

[0005] The utility model is realized as follows:

[0006] A kind of honing processing device, including mounting plate, main shaft seat and vertical plate are equipped on the mounting plate, hollow main shaft is rotatably connected in main shaft seat, hollow main shaft is rotated by power device, honing knife rod is connected at the lower end of hollow main shaft, honing bar is slid along radial direction and is arranged at the lower end of honing knife rod, push rod is slid along vertical direction and is arranged in honing knife rod, and push rod is outwardly pushed honing bar, top rod is slid along vertical direction and is arranged in hollow main shaft, and the lower end of top rod is abutted with push rod, reset spring one is sleeved on top rod, and top rod is upwardly reset, vertical guide rail and rotary motor one are equipped on the vertical plate, sliding block is slid on the vertical guide rail, sliding plate is equipped on the sliding block, rotary motor one is connected with sliding plate by ball screw mechanism, and pressure block is arranged on the sliding plate for being pressed on the upper end of top rod.

[0007] In the honing device, a bearing is sleeved on the hollow spindle between the spindle base and the central control spindle, and a linear motion ball bearing is sleeved on the ejector rod between the hollow spindle and the ejector rod.

[0008] In the honing device, a controller is further arranged, a pressure sensor for detecting the pressure of the ejector rod is arranged below the pressing block, the pressure sensor is connected to the controller through a wired or wireless connection, the pressure sensor transmits a pressure signal to the controller, the rotary motor one is connected to the controller through a wired or wireless connection, and when the detection value of the pressure sensor is greater than a set value, the controller controls the rotary motor one to stop running, and the rotary motor one continues to run after the detection value of the pressure sensor is less than the set value.

[0009] In the honing device, a top plate is fixed to the upper end of the ejector rod, the power device is a rotary motor two arranged on the mounting plate, a driving wheel is arranged on the rotating shaft of the rotary motor two, a driven wheel driven by the driving wheel is sleeved on the upper end of the hollow spindle, an assembly plate is fixed above the driven wheel, a limiting column for limiting the top plate in the circumferential direction is arranged on the assembly plate, a first reset spring is arranged between the top plate and the assembly plate, a pressing rod is arranged on the upper end of the ejector rod, a radial bearing is sleeved outside the pressing rod, a bearing seat is sleeved outside the radial bearing, and the bearing seat is arranged on the pressure sensor.

[0010] In the honing device, the top plate is fixedly connected to the ejector rod through screws, grooves for the limiting column to extend into are arranged on the top plate, and the lower end of the limiting column is screw-connected to the assembly plate.

[0011] In the honing device, an upper cover plate for limiting the upper end of the radial bearing is arranged above the radial bearing, and a lower cover plate for limiting the lower end of the radial bearing is arranged below the radial bearing, the upper cover plate and the lower cover plate are fixedly arranged on the bearing seat, a connecting plate is arranged above the upper cover plate, the connecting plate is connected to the upper cover plate through connecting strips, and the connecting plate is fixedly arranged on the pressure sensor.

[0012] In the honing device, two radial bearings are arranged, the upper cover plate is arranged above the upper radial bearing, and the lower cover plate is arranged below the lower radial bearing.

[0013] In the honing device, a nut for limiting the upper end of the inner ring of the radial bearing is screw-connected to the upper end of the pressing rod, and a limiting step for limiting the lower end of the inner ring of the radial bearing is arranged at the lower end of the pressing rod, a plurality of connecting strips are circumferentially arranged around the outer periphery of the nut.

[0014] In the honing device, the connecting plate, the connecting strip and the upper cover plate are in an integrated structure, the connecting plate is fixedly connected to the pressure sensor through screws, and the upper cover plate and the lower cover plate are fixedly connected to the bearing seat through screws.

[0015] In the honing device, the upper end of the ejector rod is sleeved with a thrust bearing located above the top plate, and the pressure rod is arranged on the ejector rod through the thrust bearing.

[0016] In the honing device, the lower end of the push rod is provided with a push rod inclined surface, the honing tool bar is radially provided with a wedge-shaped block, the side wall of the honing tool bar is provided with a through hole for the wedge-shaped block to extend out, the inner side of the wedge-shaped block is provided with a wedge-shaped block inclined surface matched with the push rod inclined surface, the outer side of the wedge-shaped block is provided with the honing strip, the honing tool bar is provided with one wedge-shaped block and one honing strip, and the outer side of the honing tool bar is provided with a wear-resistant strip.

[0017] In the honing device, the wear-resistant strip is provided with two or more than two, the material of the wear-resistant strip is cemented carbide, high-speed steel or tungsten steel, and the wear-resistant strip is fixed on the honing tool bar through welding.

[0018] In the honing device, the honing tool bar is externally sleeved with a limiting sleeve vertically moved by a driving device, the driving device is connected to the controller through a wire or wireless connection, when the honing device does not process the workpiece, the limiting sleeve is located at the outer periphery of the honing strip to limit the wedge-shaped block from falling off, and when the honing device processes the workpiece, the limiting sleeve is located at the outer periphery of the honing tool bar without the honing strip.

[0019] In the honing device, the driving device is a combination of a cylinder, an oil cylinder, a linear motor or a motor and a ball screw.

[0020] In the honing device, the upper end of the push rod is provided with a clamping spring, the upper end of the push rod is sleeved with a reset spring two for upwardly resetting the push rod, and the reset spring two is arranged between the clamping spring and the honing tool bar.

[0021] In the honing device, the push rod is provided with a waist-shaped hole vertically arranged in the length direction, the honing tool bar is radially provided with a limiting pin, and the limiting pin is inserted into the waist-shaped hole.

[0022] In the honing device, the lower end of the hollow main shaft is fixedly provided with a hollow fixing sleeve through screws, the fixing sleeve is fixedly provided with a tool bar sleeve through screws, and the upper end of the honing tool bar is fixed in the tool bar sleeve.

[0023] In the honing device, the honing tool bar is provided with a boss located below the tool bar sleeve, the honing tool bar is screwed with a connecting nut located above the tool bar sleeve, and the honing tool bar is locked in the tool bar sleeve through the connecting nut.

[0024] The utility model discloses compared with prior art outstanding advantages are:

[0025] 1, the utility model discloses a rotary motor one through the ball screw mechanism connection sliding plate, the sliding block of connecting sliding plate is slid on vertical guide rail, and the sliding plate is positioned through vertical guide rail and sliding block, so that the sliding plate and the pressing block are not easy to shake, can accurately move along the vertical, and then make the push rod accurate and lower, and the honing precision is high, is suitable for high -precision processing.

[0026] 2, the utility model discloses the pressing block below is equipped with the pressure sensor for detecting the pressure of ejector rod, the pressure sensor with controller passes through wired or wireless connection, and pressure sensor passes pressure signal to controller, and the rotary motor one with controller passes through wired or wireless connection, when the detection value of pressure sensor is greater than the set value, the controller controls rotary motor one and stops running, i. e. stop honing strip and move out, and after the detection value of pressure sensor is less than the set value, rotary motor one continues to run again, i. e. honing strip continues to move out, guarantees honing tool to work under the set pressure in the processing, effectively slows down the tool scrap.

[0027] 3, the utility model discloses the wedge-shaped block and honing strip are provided with a honing tool bar suitable for smaller size, and the setting of wear -resisting strip can effectively position and guide the position of honing tool bar in the inner hole of workpiece, and the use of wear -resisting material can reduce abrasion and prolong service life. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the perspective drawing of the utility model;

[0029] Figure 2 It is the sectional view of honing tool and pressure sensor mounting structure of the utility model;

[0030] Figure 3 It is the perspective drawing of honing tool of the utility model;

[0031] Figure 4 It is the explosion drawing of honing tool of the utility model;

[0032] Figure 5 It is the perspective drawing of wedge-shaped block of the utility model.

[0033] Reference signs: 1, mounting plate; 2, main shaft base; 3, vertical plate; 4, hollow main shaft; 5, honing tool bar; 6, honing strip; 7, push rod; 8, ejector rod; 9, return spring I; 10, vertical guide rail; 11, rotary motor I; 12, sliding block; 13, sliding plate; 14, pressing block; 15, pressure sensor; 16, top plate; 17, rotary motor II; 18, driving wheel; 19, driven wheel; 20, assembly plate; 21, limiting column; 22, pressing rod; 23, radial bearing; 24, bearing seat; 25, upper cover plate; 26, lower cover plate; 27, connecting plate; 28, connecting strip; 29, nut; 30, limiting step; 31, thrust bearing; 32, push rod inclined surface; 33, wedge block; 34, wedge block inclined surface; 35, wear-resistant strip; 36, limiting sleeve; 37, clamping spring; 38, return spring II; 39, limiting pin; 40, fixed sleeve; 41, tool bar sleeve. DETAILED DESCRIPTION

[0034] The utility model will be further described below with specific embodiments, referring to Figure 1 -5:

[0035] A kind of honing processing device, including mounting plate 1, the mounting plate 1 is equipped with main shaft base 2 and vertical plate 3, hollow main shaft 4 is rotationally connected in main shaft base 2, hollow main shaft 4 is rotated by power device, hollow main shaft 4 lower end is connected with honing tool bar 5, honing tool bar 5 lower end is radially slid with honing strip 6, honing tool bar 5 is slid with push rod 7 that honing strip 6 is pushed outward along vertical direction in, the push rod 7 of hollow main shaft 4 is slid with the ejector rod 8 of lower end and push rod 7 abut in vertical direction, the ejector rod 8 is equipped with return spring I 9 that the ejector rod 8 is reset upwards on, the vertical plate 3 is equipped with vertical guide rail 10 and rotary motor I 11, the sliding block 12 is slid on the vertical guide rail 10, the sliding plate 13 is equipped on the sliding block 12, the rotary motor I 11 is connected the sliding plate 13 by ball screw mechanism, the sliding plate 13 is equipped with the pressing block 14 for being pressed on the upper end of ejector rod 8.

[0036] The working principle of the utility model is as shown in Figures 1-5 The rotary motor I 11 is connected the sliding plate 13 by ball screw mechanism, the sliding block 12 of connecting sliding plate 13 is slid on vertical guide rail 10, the sliding plate 13 is positioned by vertical guide rail 10 and sliding block 12, so that the sliding plate 13 and pressing block 14 are not easy to shake, can accurately move along vertical direction, in turn make push rod 7 lower accurately, honing processing precision is high, is suitable for high-precision processing.

[0037] The rotary motor I 11 is connected the sliding plate 13 by ball screw mechanism, the sliding block 12 of connecting sliding plate 13 is slid on vertical guide rail 10, the sliding plate 13 is positioned by vertical guide rail 10 and sliding block 12, so that the sliding plate 13 and pressing block 14 are not easy to shake, can accurately move along vertical direction, in turn make push rod 7 lower accurately, honing processing precision is high, is suitable for high-precision processing.

[0038] Further, the main shaft seat 2 and the central control main shaft 4 are provided with a bearing sleeved on the hollow main shaft 4, and the hollow main shaft 4 and the top rod 8 are provided with a linear motion ball bearing sleeved on the top rod 8.

[0039] In order to protect the honing tool, as shown in Figures 1-4 The controller is further provided, the pressure sensor 15 is arranged below the pressing block 14 and used for detecting the pressure of the top rod 8, the pressure sensor 15 is connected with the controller through wired or wireless connection, the pressure sensor 15 transmits a pressure signal to the controller, and the rotary motor one 11 is connected with the controller through wired or wireless connection. When the detection value of the pressure sensor 15 is greater than a set value, the controller controls the rotary motor one 11 to stop running, that is, the honing strip 6 stops moving outward, and after the detection value of the pressure sensor 15 is less than the set value, the rotary motor one 11 continues to run, that is, the honing strip 6 continues to move outward. During the machining process, the honing tool works under the set pressure, and the tool is effectively slowed down.

[0040] In the embodiment, the pressure sensor 15 is a pressure sensor of the type of ZNLBM-VI manufactured by BURG, and is fixedly installed on the pressing block 14 through a screw.

[0041] In order to realize the rotation of the top rod 8 and the non-rotation of the pressure sensor 15, so that the pressure sensor 15 can better detect the pressure from the top rod 8, as shown in Figure 1 、 2 The top plate 16 is fixed on the upper end of the top rod 8, the power device is a rotary motor two 17 arranged on the mounting plate 1, a driving wheel 18 is arranged on the rotating shaft of the rotary motor two 17, a driven wheel 19 driven by the driving wheel 18 is sleeved on the upper end of the hollow main shaft 4, an assembly plate 20 is fixed above the driven wheel 19, the assembly plate 20 is provided with a limiting column 21 for circumferentially limiting the top plate 16, the reset spring one 9 is arranged between the top plate 16 and the assembly plate 20, a pressing rod 22 is arranged on the upper end of the top rod 8, a radial bearing 23 is sleeved on the pressing rod 22, a bearing seat 24 is sleeved on the radial bearing 23, and the bearing seat 24 is arranged on the pressure sensor 15.

[0042] Further, the top plate 16 is fixedly connected to the top rod 8 through a screw, the top plate 16 is provided with a groove for the limiting column 21 to extend into, and the lower end of the limiting column 21 is screw-connected to the assembly plate 20.

[0043] When the hollow main shaft 4 rotates, the honing tool rod 5 and the assembly plate 20 are driven to rotate, the assembly plate 20 drives the top plate 16 to rotate through the limiting column 21, and then drives the top rod 8 to rotate.

[0044] Further, the driving wheel 18 and the driven wheel 19 can be connected by a synchronous belt, or by a chain, or by engagement. In the embodiment, the driving wheel 18 and the driven wheel 19 are connected by a synchronous belt.

[0045] The mounting structure of the bearing seat 24 and the pressure sensor 15: as shown in Figure 1 、 2 , an upper cover plate 25 for upper limiting the outer ring of the radial bearing 23 is arranged above the radial bearing 23, and a lower cover plate 26 for lower limiting the radial bearing 23 is arranged below the radial bearing 23, the upper cover plate 25 and the lower cover plate 26 are fixedly installed on the bearing seat 24, a connecting plate 27 is arranged above the upper cover plate 25, the connecting plate 27 is connected with the upper cover plate 25 through connecting strips 28, and the connecting plate 27 is fixedly installed on the pressure sensor 15.

[0046] Further, the radial bearing 23 is provided with two radial bearings, the upper cover plate 25 is arranged above the upper radial bearing 23, and the lower cover plate 26 is arranged below the lower radial bearing 23.

[0047] The mounting structure of the radial bearing 23: a nut 29 for upper limiting the inner ring of the radial bearing 23 is screwed on the upper end of the pressure rod 22, a limiting step 30 for lower limiting the inner ring of the radial bearing 23 is arranged on the lower end of the pressure rod 22, a plurality of connecting strips 28 are circumferentially distributed and arranged around the outer periphery of the nut 29.

[0048] Further, the connecting plate 27, the connecting strips 28 and the upper cover plate 25 are of an integrated structure, the connecting plate 27 is fixedly connected with the pressure sensor 15 through screws, and the upper cover plate 25 and the lower cover plate 26 are fixedly connected with the bearing seat 24 through screws.

[0049] In order to prevent the pressure sensor 15 from rotating when the jacking rod 8 rotates, and further protect the pressure sensor 15, as shown in Figure 1 、 2 , a thrust bearing 31 located above the top plate 16 is sleeved on the upper end of the jacking rod 8, and the pressure rod 22 is pressed on the jacking rod 8 through the thrust bearing 31.

[0050] The specific structure of the honing tool: as shown in Figures 1-5As shown, the lower end of the push rod 7 is provided with a push rod inclined surface 32, the honing tool bar 5 is provided with a wedge block 33 sliding along the radial direction, the side wall of the honing tool bar 5 is provided with a through hole for the wedge block 33 to extend out, the inner side of the wedge block 33 is provided with a wedge block inclined surface 34 matched with the push rod inclined surface 32, and the outer side is provided with the honing strip 6. The wedge block 33 and the honing strip 6 are both provided with one, and the outer side of the honing tool bar 5 is provided with a wear-resistant strip 35. The wedge block 33 and the honing strip 6 are provided with one honing tool bar 5 with a smaller size, the wear-resistant strip 35 can effectively position and guide the position of the honing tool bar 5 in the inner hole of the workpiece, and the use of wear-resistant materials can reduce wear and prolong the service life.

[0051] Further, the wear-resistant strip 35 is provided with two or more, the material of the wear-resistant strip 35 is cemented carbide, high-speed steel or tungsten steel, and is fixed on the honing tool bar 5 by welding. In this embodiment, the wear-resistant strip 35 is provided with two, and the material of the wear-resistant strip 35 is cemented carbide.

[0052] In order to prevent the wedge block 33 and the honing strip 6 from falling off when not processing, the honing tool bar 5 is sleeved with a limiting sleeve 36 driven by a driving device to move vertically, and the driving device is connected with the controller through wired or wireless connection. When the honing device does not process the workpiece, the limiting sleeve 36 is located at the outer periphery of the honing strip 6 to limit the falling of the wedge block 33; when the honing device processes the workpiece, the limiting sleeve 36 is located at the outer periphery of the honing tool bar 5 without the honing strip 6.

[0053] Further, the driving device is a combination of air cylinder, oil cylinder, linear motor or motor and ball screw. In this embodiment, the driving device is two air cylinders provided on the mounting plate 1, and the limiting sleeve 36 is connected to the piston rod of the corresponding air cylinder at both ends.

[0054] Reset structure of the push rod 7: the upper end of the push rod 7 is provided with a circlip 37, and the upper end of the push rod 7 is sleeved with a reset spring two 38 for upward resetting the push rod 7, and the reset spring two 38 is arranged between the circlip 37 and the honing tool bar 5.

[0055] In order to prevent the push rod 7 from moving away from the honing tool bar 5, the push rod 7 is provided with a waist-shaped hole arranged vertically along the length direction, the honing tool bar 5 is provided with a limiting pin 39 inserted along the radial direction, and the limiting pin 39 is inserted into the waist-shaped hole.

[0056] Specific installation structure of the honing tool bar 5: the lower end of the hollow spindle 4 is fixedly installed with a hollow fixing sleeve 40 through screws, the fixing sleeve 40 is fixedly installed with a tool bar sleeve 41 through screws, and the upper end of the honing tool bar 5 is fixed in the tool bar sleeve 41.

[0057] The specific connection structure of the honing tool bar 5 and the tool bar sleeve 41 is that the honing tool bar 5 is provided with a boss below the tool bar sleeve 41, and the honing tool bar 5 is screwed with a connecting nut above the tool bar sleeve 41, and the honing tool bar 5 is locked in the tool bar sleeve 41 through the connecting nut.

[0058] The above embodiment is only one of the preferred embodiments of the present application, and does not limit the scope of the present application, so that: any equivalent changes made according to the shape, structure and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A honing apparatus characterized by comprising: The utility model provides a kind of vertical type's honing machine, including installation plate (1), the installation plate (1) is equipped with main shaft seat (2) and vertical plate (3), main shaft seat (2) is rotatably connected with hollow main shaft (4) inside, hollow main shaft (4) is rotated by power device drive, hollow main shaft (4) lower end is connected with honing tool bar (5), honing tool bar (5) lower end is radially slid with honing strip (6), honing tool bar (5) is slid with push rod (7) outside pushing honing strip (6) along vertical direction inside, the hollow main shaft (4) is slid with the top rod (8) of lower end and push rod (7) abutment along vertical direction inside, top rod (8) is equipped with the reset spring one (9) of upward reset top rod (8) on top, the vertical plate (3) is equipped with vertical guide rail (10) and rotary motor one (11), the vertical guide rail (10) is slid with sliding block (12) on, the sliding block (12) is equipped with slide plate (13) on, the rotary motor one (11) is connected the slide plate (13) by ball screw mechanism, the slide plate (13) is equipped with the pressure block (14) for pressing on the top of top rod (8) on.

2. A honing apparatus according to claim 1, wherein: Also including controller, the pressure block (14) below is equipped with the pressure sensor (15) for detecting the pressure of top rod (8), the pressure sensor (15) is connected with the controller by wire or wireless, and pressure sensor (15) transmits pressure signal to controller, the rotary motor one (11) is connected with the controller by wire or wireless.

3. A honing apparatus according to claim 2, wherein: The top rod (8) is fixed with the top plate (16) on the upper end, the power device is the rotary motor two (17) arranged on the installation plate (1), the rotary motor two (17) is equipped with driving wheel (18) on the rotating shaft, the hollow main shaft (4) is equipped with driven wheel (19) on the upper end, the driven wheel (19) is fixed with the assembly plate (20) on the upper side, the assembly plate (20) is equipped with the limiting post (21) for limiting the top plate (16) circumferentially, the reset spring one (9) is arranged between the top plate (16) and the assembly plate (20), the top rod (8) is pressed with the pressure rod (22) on the upper end, the pressure rod (22) is equipped with the radial bearing (23) on the outer sleeve, the radial bearing (23) is equipped with the bearing seat (24) on the outer sleeve, the bearing seat (24) is installed on the pressure sensor (15).

4. A honing apparatus according to claim 3, wherein: The radial bearing (23) is equipped with the upper cover plate (25) for limiting the upper side of the outer ring of radial bearing (23) and the lower cover plate (26) for limiting the lower side of radial bearing (23), the upper cover plate (25) and the lower cover plate (26) are fixedly installed on the bearing seat (24), the upper cover plate (25) is equipped with the connecting plate (27) on the upper side, the connecting plate (27) is connected with the upper cover plate (25) by the connecting strip (28), the connecting plate (27) is fixedly installed on the pressure sensor (15).

5. A honing apparatus according to claim 4, wherein: The pressure rod (22) is screwed with the nut (29) for limiting the upper side of the inner ring of radial bearing (23) on the upper end and the limiting step (30) for limiting the lower side of the inner ring of radial bearing (23) on the lower end, the connecting strip (28) is uniformly distributed with multiple, and is surrounded in the outer circumference of nut (29).

6. A honing apparatus according to claim 3, wherein: The upper end of the top rod (8) is sleeved with a thrust bearing (31) above the top plate (16), and the pressing rod (22) is pressed on the top rod (8) through the thrust bearing (31).

7. The honing apparatus of claim 1 wherein: The lower end of the push rod (7) is provided with a push rod inclined surface (32), the honing tool bar (5) is radially slidably provided with a wedge block (33), the side wall of the honing tool bar (5) is provided with a through hole for the wedge block (33) to extend out, the inner side of the wedge block (33) is provided with a wedge block inclined surface (34) matched with the push rod inclined surface (32), and the outer side of the wedge block (33) is provided with the honing strip (6), the honing tool bar (5) is provided with one wedge block (33) and one honing strip (6), and the outer side of the honing tool bar (5) is provided with a wear-resistant strip (35).

8. A honing apparatus according to claim 7, wherein: The honing tool bar (5) is externally sleeved with a limiting sleeve (36) driven by a driving device to move vertically, the driving device is connected with the controller through wired or wireless connection, when the honing device does not process workpieces, the limiting sleeve (36) is located at the outer periphery of the honing strip (6) to limit the falling of the wedge block (33); when the honing device processes workpieces, the limiting sleeve (36) is located at the outer periphery of the honing tool bar (5) without the honing strip (6).

9. A honing apparatus according to claim 7, wherein: The upper end of the push rod (7) is provided with a clamping spring (37), the upper end of the push rod (7) is sleeved with a reset spring two (38) for upwardly resetting the push rod (7), and the reset spring two (38) is arranged between the clamping spring (37) and the honing tool bar (5).

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