Portable polishing assistive device

Abstract

The utility model discloses a portable polishing assistive device which comprises an abrasive cloth wheel, a rotor shaft, a pneumatic grinding head, a lengthened damping connecting rod and a grinding head handle, one end of the lengthened damping connecting rod is connected with the pneumatic grinding head, and the other end of the lengthened damping connecting rod is connected with the grinding head handle. The end, connected with the pneumatic grinding head, of the lengthened damping connecting rod and the end, connected with the grinding head handle, of the lengthened damping connecting rod are each provided with an O-shaped ring. At one end of the grinding head handle connected with the lengthened damping connecting rod, a vent valve is arranged on the grinding head handle, and a pipe joint is arranged at the other end of the grinding head handle; a rotor shaft is installed at the end of the pneumatic grinding head, a baffle is arranged on the rotor shaft, an abrasive cloth wheel is installed on the rotor shaft, a check ring penetrates through the rotor shaft on one side of the abrasive cloth wheel, the abrasive cloth wheel is located between the baffle and the check ring, and a nut is connected to the rotor shaft on one side of the check ring. According to the pneumatic grinding head, the length of the pneumatic grinding head is effectively prolonged, it is guaranteed that the pneumatic grinding head goes deep into the hole bottom of a deep closed hole with the large diameter, and the abrasive cloth wheel is used for conducting accurate grinding and polishing on the surface of the hole diameter of the root of the hole.

Description

TECHNICAL FIELD

[0001] The utility model relates to a portable polishing auxiliary tool belongs to mechanical processing technical field. BACKGROUND

[0002] In the production and processing of parts, often encounter diameter in phi 80mm~phi 200mm, depth less than 800mm closed hole structure, hole diameter needs to be carried out metal chromium plating treatment to meet the design structure requirement after finish machining. The structure hole usually after half finish machining, adopt honing method finish machining and reserve enough chromium plating thickness size, the straightness of hole diameter is controlled within 0.02mm, the surface roughness reaches above 0.8. In order to avoid the collision of honing tool head in the process of use, usually reserve 30mm~60mm distance when honing, but like this cannot process to the root of hole bottom, cannot meet the design structure requirement. SUMMARY

[0003] In order to overcome the insufficient of prior art, the utility model provides a portable polishing auxiliary tool, the device effectively lengthens the length of pneumatic grinding head, guarantees that pneumatic grinding head goes into the hole bottom of larger diameter, deeper closed hole, uses abrasive cloth wheel to finish grinding and polishing the surface of root hole diameter.

[0004] The utility model discloses a portable polishing auxiliary tool, including abrasive cloth wheel, rotor shaft, pneumatic grinding head, lengthening shock attenuation connecting rod and grinding head handle, one end of lengthening shock attenuation connecting rod is connected with a pneumatic grinding head, and one end of lengthening shock attenuation connecting rod is connected with a grinding head handle, and the end of pneumatic grinding head is installed with the rotor shaft that is same direction with pneumatic grinding head, and the rotor shaft is installed with abrasive cloth wheel.

[0005] Further, the one end of lengthening shock attenuation connecting rod and pneumatic grinding head connection and the one end of lengthening shock attenuation connecting rod and grinding head handle connection are equipped with an O ring.

[0006] Further, the shaft body of rotor shaft is provided with a circular baffle, abrasive cloth wheel is installed on the shaft body of rotor shaft, and on the side of abrasive cloth wheel, the shaft body of rotor shaft is matched and passes through a check ring, abrasive cloth wheel is located between baffle and check ring, and on the side of check ring, the shaft of rotor is connected with a nut by screw thread.

[0007] Further, the grinding head handle and lengthening shock attenuation connecting rod are also screw thread connection, and on the one end of screw thread connection, the grinding head handle is equipped with a gas valve, and the other end of grinding head handle is equipped with a pipe joint.

[0008] Further, the grinding head handle and gas valve, pipe joint are integral structure.

[0009] Further, the section direction of lengthening shock attenuation connecting rod is square tenon structure.

[0010] The beneficial effects of the utility model are as follows: the utility model has a simple design structure and a low manufacturing process cost, and the connecting rod is connected reliably with the pneumatic grinding head and the grinding head handle through a threaded connection; the cross-section direction of the lengthened shock-absorbing connecting rod is milled into a square tenon structure, and is rigidly clamped in the tool holder of an ordinary lathe, accurately transmitting the machine tool precision to the emery wheel, and by observing the sparks generated by the emery cloth rubbing against the hole wall, the operator can control the grinding compensation amount by turning the lathe hand wheel based on experience; the depth of the emery wheel penetrating into the workpiece can be adjusted by adjusting the extended length of the lengthened shock-absorbing connecting rod, and the adjustment process is simple and convenient; the lengthened shock-absorbing connecting rod is made of high-quality alloy structural steel and has high The pneumatic grinding head drives the emery cloth wheel to participate in grinding the aperture surface near the bottom of the hole, effectively resisting the vibration caused by the excessive extension of the connecting rod; the diameter, thickness, emery cloth material and grit size of the emery cloth wheel clamped at the front end of the pneumatic grinding head can be selected accordingly according to the material of the workpiece to be ground, the amount of material to be removed, the surface roughness level required to be achieved after grinding and the aperture of the workpiece to be ground, so as to fully meet the grinding requirements; the auxiliary tool can be used in conjunction with the internal diameter dial indicator for precise measurement during the grinding process, and the radial compensation of the machine tool handwheel can be used to accurately achieve the fine processing and sizing of the aperture before chrome plating of the closed hole, so as to achieve seamless connection with the aperture surface after honing.

[0011] At present, this auxiliary tool has been widely used in the fine grinding and polishing of the root aperture surface of various types of larger aperture and deeper closed-pore workpieces before chrome plating, which has opened up new processing technology ideas for the future processing of products with similar structures and has broad applicable market value. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Figure 2 It is a schematic diagram of the emery cloth wheel of the present utility model.

[0015] Figure 3 It is a schematic diagram of the grinding head handle of the present utility model.

[0016] Figure 4 It is a front view of the lengthened shock-absorbing connecting rod 7 of the present utility model.

[0017] Figure 5 yes Figure 4 Top view of .

[0018] Figure 6 It is a schematic diagram of the ventilation valve of the present utility model.

[0019] Figure 7It is the schematic diagram of the rotor shaft of the utility model.

[0020] Figure 8 It is the three-dimensional schematic diagram of the utility model.

[0021] Figure 9 It is the position schematic diagram of the baffle of the utility model.

[0022] Mark in the drawing:

[0023] 1, nut, 2, baffle ring, 3, abrasive cloth wheel, 4, rotor shaft, 401, baffle, 5, pneumatic grinding head, 6, O ring, 7, lengthened shock-absorbing connecting rod, 8, air valve, 9, grinding head handle, 10, pipe joint. Specific implementation

[0024] As Figure 1 -9 shows a kind of portable polishing auxiliary tool, including abrasive cloth wheel 3, rotor shaft 4, pneumatic grinding head 5, lengthened shock-absorbing connecting rod 7 and grinding head handle 9, the section direction of lengthened shock-absorbing connecting rod 7 is square tenon structure, one end of lengthened shock-absorbing connecting rod 7 is threadedly connected with a pneumatic grinding head 5, the other end of lengthened shock-absorbing connecting rod 7 is threadedly connected with a grinding head handle 9;Lengthened shock-absorbing connecting rod 7 and the one end of pneumatic grinding head 5 connected and lengthened shock-absorbing connecting rod 7 and the one end of grinding head handle 9 connected are equipped with an O ring 6;In the one end of grinding head handle 9 and lengthened shock-absorbing connecting rod 7 connection, grinding head handle 9 is equipped with an air valve 8 on it, the other end of grinding head handle 9 is equipped with a pipe joint 10, and grinding head handle 9 is integrated structure with air valve 8 and pipe joint 9;Pneumatic grinding head 5 is installed with a rotor shaft 4 in the same direction with pneumatic grinding head 5 at end, and a circular baffle 401 is arranged on the shaft body of rotor shaft 4, abrasive cloth wheel 3 is installed on the shaft body of rotor shaft 4, and a baffle ring 2 is passed through on the shaft body of rotor shaft 4 on one side of abrasive cloth wheel 3, and abrasive cloth wheel 3 is located between baffle 401 and baffle ring 2, and a nut 1 is threadedly connected on the shaft body of rotor shaft 4 on the side of baffle ring 2.

[0025] During work, the lengthened shock-absorbing connecting rod 7 is clamped on the tool rest of ordinary lathe using tool rest screw, the pipe joint 10 is connected with high-pressure gas supply hose, the high-pressure air blown into from grinding head handle 9 through pipe joint 10, passes through the inner hole of lengthened shock-absorbing connecting rod 7, so that the rotor in pneumatic grinding head 5 gets enough air volume, and enough torque is transmitted to abrasive cloth wheel 3, so as to drive the rotor in pneumatic grinding head 5 and its front end to rotate at high speed through the nut 1 fixed outside abrasive cloth wheel 3, the abrasive cloth wheel 3 rotating at high speed rubs with the surface to be polished of workpiece at high speed, so as to realize accurate grinding and polishing work on the surface of hole diameter of the bottom root of large and deep closed hole structure workpiece.

[0026] The polishing auxiliary tool selects high-quality alloy structural steel to process the lengthened shock-absorbing connecting rod 7, which is connected between the pneumatic grinding head 5 and the grinding head handle 9 through screwing, clamps the lengthened shock-absorbing connecting rod 7 on the machine tool tool rest, and makes the pneumatic grinding head 5 and the tool rest rigidly connected; the O-ring 6 is elastically deformed after screwing and is perfectly sealed between the pneumatic grinding head 5 and the lengthened shock-absorbing connecting rod 7 and between the lengthened shock-absorbing connecting rod 7 and the grinding head handle 9, effectively ensuring the sealing of the connecting part.

[0027] Use steps:

[0028] 1. According to the material, hole diameter and other factors of the workpiece to be repaired and polished, the diameter and grit density of the abrasive cloth wheel 3 are reasonably selected, and the selected abrasive cloth wheel 3 is fixed on the front end of the rotor shaft 4 of the pneumatic grinding head 5 by screwing the nut 1;

[0029] 2. The pneumatic grinding head 5 is screwed and fixed on one end of the lengthened shock-absorbing connecting rod 7, and the other end of the lengthened shock-absorbing connecting rod 7 is screwed and installed with the grinding head handle 9 and the high-pressure gas supply hose;

[0030] 3. The square tenon of the lengthened shock-absorbing connecting rod 7 is clamped on the tool rest of the ordinary lathe by using the tool rest screw, and at the same time, the lengthened shock-absorbing connecting rod 7 is basically parallel to the axial direction of the workpiece;

[0031] 4. Observe the relative position between the abrasive cloth wheel 3 at the front end of the pneumatic grinding head 5 and the workpiece, and cooperate with the hand wheel to make the abrasive cloth wheel 3 approach the hole diameter surface of the workpiece hole bottom;

[0032] 5. According to experience, match the speed of the machine tool spindle, and rotate the machine tool spindle;

[0033] 6. Press the valve core of the air valve 8 at the handle of the pneumatic grinding head 5, and the abrasive cloth wheel 3 at the front end rotates at high speed under the blowing of compressed air;

[0034] 7. Shake the lathe hand wheel to make the high-speed rotating abrasive cloth wheel 3 approach the hole diameter surface of the hole bottom, observe the sparks generated by the abrasive cloth wheel 3 rubbing the surface, estimate and move the tool rest horizontally, drive the abrasive cloth wheel 3 to grind the surface, during which the machine can be stopped and the abrasive cloth 3 can be stopped rotating, the reserved amount removed by grinding is verified by using the inside diameter dial gauge, the tool rest is estimated and moved horizontally to make the abrasive cloth wheel 3 grind the surface, and the design requirements are met.

[0035] Under normal circumstances, the hole diameter allowance of the workpiece hole bottom is large, the surface is rough, and the workpiece material is soft, so it is appropriate to select the abrasive cloth wheel with smaller grit density to rough grind and remove the grinding allowance, and the workpiece with harder material and smaller grinding surface roughness is suitable for fine grinding by selecting the abrasive cloth wheel with larger grit density.

Claims

1. A portable polishing aid, characterized by: The invention comprises an emery wheel (3), a rotor shaft (4), a pneumatic grinding head (5), an extended shock-absorbing connecting rod (7) and a grinding head handle (9), wherein one end of the extended shock-absorbing connecting rod (7) is threadedly connected to a pneumatic grinding head (5), and the other end of the extended shock-absorbing connecting rod (7) is connected to a grinding head handle (9), a rotor shaft (4) in the same direction as the pneumatic grinding head (5) is installed at the end of the pneumatic grinding head (5), and an emery wheel (3) is installed on the rotor shaft (4).

2. A portable polishing aid according to claim 1, characterized in that: The end of the extended shock-absorbing connecting rod (7) connected to the pneumatic grinding head (5) and the end of the extended shock-absorbing connecting rod (7) connected to the grinding head handle (9) are both equipped with an O-ring (6).

3. The portable polishing tool according to claim 1, characterized in that: A circular baffle (401) is provided on the shaft body of the rotor shaft (4), and an abrasive wheel (3) is mounted on the shaft body of the rotor shaft (4). On one side of the abrasive wheel (3), a retaining ring (2) fits through the shaft body of the rotor shaft (4). The abrasive wheel (3) is located between the baffle (401) and the retaining ring (2). On one side of the retaining ring (2), a nut (1) is threadedly connected to the rotor shaft (4).

4. The portable polishing tool according to claim 1, characterized in that: The grinding head handle (9) is also threadedly connected to the extended shock-absorbing connecting rod (7). At the end of the threaded connection, a vent valve (8) is installed on the grinding head handle (9), and a pipe joint (10) is provided at the other end of the grinding head handle (9).

5. The portable polishing aid according to claim 4, characterized in that: The grinding head handle (9), the vent valve (8) and the pipe joint (10) are an integrated structure.

6. The portable polishing tool according to claim 4, characterized in that: The cross-section direction of the extended shock-absorbing connecting rod (7) is a square tenon structure.

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