Conical grinding head

Abstract

The utility model relates to a grinding head, in particular to a conical grinding head. Comprising a grinding head base body, a sleeve frame is fixedly connected to one side of the grinding head base body, the axis of the sleeve frame and the axis of the grinding head base body are located on the same straight line, involution grooves are formed in the two sides of the sleeve frame, and locking shells are arranged in the involution grooves in a sliding mode. According to the polishing head, after the sleeve frame is arranged at one end of the main shaft in a sleeving mode and the locking groove is communicated with the folding groove, an operator drives the two locking shells to be close to each other by screwing the threaded rod, the ends, close to each other, of the two locking shells move into the locking groove, and then the polishing head can be installed on the main shaft of a motor; and similarly, the grinding head can be separated from the main shaft by reversely twisting the threaded rod, so that the grinding head can be conveniently replaced by an operator according to the aperture size of the workpiece, and the grinding efficiency of the operator on the workpieces with different sizes is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a polishing head, in particular to a conical polishing head. BACKGROUND

[0002] With the development of industry, products of various industries are constantly iterated and updated, and various aperture angle structures will appear on products such as stone, glass, carbon fiber and metal to meet different appearance and functional needs, such as polishing processing of the inner aperture surface and aperture angle of the product, improving the appearance and performance of the product, and realizing the value improvement of the product.

[0003] The components of the polishing equipment in the prior art include a polishing motor and a polishing head, the polishing head is coaxially installed on the main shaft 2 of the polishing motor, the main shaft 2 of the polishing motor drives the polishing head to rotate at high speed, and then the workpiece to be polished is brought into contact with the rotating polishing head to polish and polish the surface of the workpiece, one of the installation modes of the polishing head and the main shaft 2 is to open a locking groove 21 on the side wall of the main shaft 2 close to the end, and the pin arranged on the polishing head is inserted and locked in the locking groove 21, so as to realize the coaxial installation and fixation of the polishing head and the main shaft 2, and the polishing head has the following defects: the connection between the polishing head and the main shaft 2 is close to the polishing head and the main shaft 2, when the operator pulls out the pin from the locking groove 21, the hand movement of the operator is easily blocked by the polishing head and the main shaft 2, which causes inconvenience to the operator in inserting and pulling out the pin, and when the operator uses one polishing equipment to polish multiple workpieces with different aperture sizes, the corresponding polishing head needs to be replaced, and the operator needs to insert and pull out the pin when disassembling the polishing head, since the travel path of the pin in the locking groove 21 is relatively long, the time consumed by the operator in inserting and pulling out the pin is also relatively long, which affects the efficiency of the operator in polishing multiple workpieces with different sizes. SUMMARY

[0004] The utility model aims at providing a conical polishing head to solve the problems in the background art.

[0005] To achieve the above objectives, one of the objectives of this utility model is to provide a conical grinding head, including a grinding head base, which is a frustum-shaped structure. A lining cloth is fixedly disposed on the conical side of the grinding head base, and a sandpaper is fixedly disposed on the conical side of the lining cloth. The sandpaper and the lining cloth are connected by a reverse winding path and are bonded together by an adhesive. A sleeve frame is fixedly connected to one side of the grinding head base. The sleeve frame is an elliptical structure, and the axes of the sleeve frame and the grinding head base are on the same straight line. Both sides of the sleeve frame are provided with mating grooves, and locking shells are slidably disposed inside the mating grooves. One end of the main shaft is inserted into the inside of the sleeve frame. The locking groove is connected to the two mating grooves. When the ends of the two locking shells that are close to each other move into the locking grooves, the locking shells fix one end of the main shaft inside the sleeve frame. A displacement mechanism is provided on one side of the grinding head base, which is used to drive the two locking shells to move relative to each other.

[0006] Furthermore, the displacement mechanism includes a threaded rod rotatably disposed on one side of the sleeve frame, a slider threadedly connected to the threaded rod, the slider slidably disposed on the upper side of the grinding head base, a second rack fixedly connected to both sides of the slider, a lower gear meshing on one side of the second rack, and the lower gear rotatably disposed on the upper side of the grinding head base.

[0007] Furthermore, the displacement mechanism also includes a connecting rod fixedly connected to one side of the locking housing. The two connecting rods are located on both sides of the sleeve frame, and the other end of the connecting rod is fixedly connected to a first rack. The axis of the first rack is parallel to the axis of the locking housing. An upper gear is coaxially fixedly connected to the lower gear, and the two first racks mesh with the two upper gears respectively.

[0008] Furthermore, the displacement mechanism also includes a through groove formed on the first rack, and two first guide rods are symmetrically fixedly connected to one side of the grinding head base, with the two first guide rods slidably disposed inside the two through grooves respectively.

[0009] Furthermore, two second guide rods are symmetrically fixedly connected to one side of the grinding head base, and the two locking shells are respectively slidably sleeved on the outside of the two second guide rods.

[0010] Furthermore, the grinding head base has a frustum-shaped structure, and a lining cloth is fixedly provided on the conical side of the grinding head base, and abrasive cloth is fixedly provided on the conical side of the lining cloth.

[0011] Furthermore, a cover is fixedly connected to the upper side wall of the grinding head base, the cover is slidably sleeved on the outside of the spindle, and the displacement mechanism and one end of the spindle are located inside the cover.

[0012] Further, the axis on the polishing head base is provided with a cavity, and the reinforcing rod is inserted into the cavity.

[0013] Compared with the prior art, the utility model has the beneficial effects of:

[0014] The conical polishing head is installed on the main shaft of the motor by the following steps: the sleeve frame is sleeved on one end of the main shaft, the locking groove and the counter groove are communicated, the two locking shells are driven to move close to each other by rotating the threaded rod, and the ends of the two locking shells that move close to each other are moved into the locking groove. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view of the utility model and the main shaft combined in embodiment 2;

[0016] Figure 2 It is a structure schematic view of the cover of the utility model in embodiment 2;

[0017] Figure 3 It is a schematic view of the utility model and the main shaft combined in embodiment 2;

[0018] Figure 4 It is a sectional view of the utility model and the main shaft combined in embodiment 2;

[0019] Figure 5 It is a structure schematic view of the main shaft of the utility model;

[0020] Figure 6 It is a structure schematic view of the utility model in embodiment 2;

[0021] Figure 7 It is a structure schematic view of the utility model in embodiment 2;

[0022] Figure 8 It is a structure schematic view of the displacement mechanism of the utility model in embodiment 2;

[0023] Figure 9 It is a structure schematic view of the utility model and the main shaft combined in embodiment 1;

[0024] Figure 10 It is an exploded view of the utility model in embodiment 1.

[0025] The meanings of various reference numerals in the drawings are as follows:

[0026] 1, polishing head base body; 11, cover frame; 111, matching groove; 12, backing cloth; 13, sand cloth; 14, cover; 15, cavity;

[0027] 2, main shaft; 21, locking groove; 22, reinforcing rod;

[0028] 3, displacement mechanism; 31, connecting rod; 32, first rack; 33, first guide rod; 34, upper gear; 35, lower gear; 36, sliding block; 37, second rack; 38, threaded rod;

[0029] 4, locking shell; 41, second guide rod;

[0030] 51, pin rod; 52, head; 53, bolt; 54, nut. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0032] Embodiment 1

[0033] Please refer to Figure 9 and Figure 10 It is one of the purposes of the present embodiment to provide a conical polishing head, which comprises a polishing head base body 1, the polishing head base body 1 is in the shape of a circular truncated cone, a backing cloth 12 is fixedly arranged on the conical side surface of the polishing head base body 1, a sand cloth 13 is fixedly arranged on the conical side surface of the backing cloth 12, the sand cloth 13 and the backing cloth 12 are connected through a reverse winding path, and the sand cloth 13 and the backing cloth 12 are connected through an adhesive, so that the sand cloth 13 and the backing cloth 12 are tightly attached to each other, the two ends of the sand cloth 13 are flush, the lines and the intervals are consistent, the surface of the sand cloth 13 is flat and has high strength, the sand cloth 13 can be adjusted in winding angle according to the use environment, so that the sand cloth 13 is attached to the working surface of the workpiece to be polished, the polishing quality of the workpiece by the polishing head is ensured, a cavity 15 is formed on the axis of the polishing head base body 1, after the polishing head base body 1 is installed on a main shaft 2, a reinforcing rod 22 is inserted into the cavity 15, the connection strength of the main shaft 2 and the polishing head base body 1 is enhanced through the cooperation of the reinforcing rod 22 and the cavity 15, the stability of the main shaft 2 when driving the polishing head base body 1 to rotate is improved, and the polishing effect of the workpiece by the polishing head is ensured.

[0034] Meanwhile, a sleeve frame 11 is fixedly connected to one side of the polishing head base body 1, the sleeve frame 11 is an oval structure, the axis of the sleeve frame 11 and the polishing head base body 1 are located on the same line, and opposite slots 111 are formed on two sides of the sleeve frame 11. In use, the polishing head is coaxially installed on the main shaft 2 of the motor, and the installation steps are as follows: the sleeve frame 11 is sleeved on one end of the main shaft 2 of the motor, one end of the main shaft 2 is inserted into the inside of the sleeve frame 11, and one end of the main shaft 2 is in contact with the polishing head base body 1, at this time, the locking slot 21 and the two opposite slots 111 are in communication, the reinforcing rod 22 is inserted into the cavity 15 formed at the axis of the polishing head base body 1, the reinforcing rod 22 and the cavity 15 cooperate to enhance the connection strength of the main shaft 2 and the polishing head base body 1, the operator then inserts the pin rod 51 into the inside of the locking slot 21 and the two opposite slots 111, the head 52 fixed to one end of the pin rod 51 is in contact with one side of the main shaft 2, at this time, the bolt 53 fixed to the other end of the pin rod 51 is located on the other side of the main shaft 2, the operator then twists the nut 54 onto the bolt 53 until the nut 54 is in contact with the other side of the main shaft 2, at this time, the head 52 and the nut 54 cooperate to fix the pin rod 51 in the inside of the locking slot 21 and the two opposite slots 111, thereby achieving the purpose of coaxially installing the polishing head on the main shaft 2. When the motor on the polishing equipment drives the main shaft 2 to rotate, the main shaft 2 drives the sleeve frame 11, the polishing head base body 1 and the abrasive cloth 13 to rotate synchronously through the pin rod 51, by making the workpiece to be polished contact with the rotating abrasive cloth 13, the inner hole surface of the workpiece can be polished, compared with the traditional manual polishing, the polishing efficiency is improved, the working hours and the labor cost are reduced.

[0035] Example 2

[0036] This embodiment is improved on the basis of example 1, referring to Figures 1-8The inside of the clasp groove 111 is provided with a locking shell 4, and a displacement mechanism 3 is arranged on one side of the polishing head base body 1, which is used to drive the two locking shells 4 to move along the axis of the clasp groove 111, and a counterweight is fixedly arranged on one side of the polishing head base body 1, and the counterweight and the displacement mechanism 3 are respectively located on opposite sides of the frame 11, and after the displacement mechanism 3 fixes the main shaft 2, the counterweight and the displacement mechanism 3 are similar in shape, and the weights of the counterweight and the displacement mechanism 3 on both sides of the main shaft 2 are the same, so as to balance the center of gravity of the polishing head and improve the stability of the polishing head during rotation, and two second guide rods 41 are symmetrically and fixedly connected on one side of the polishing head base body 1, the two locking shells 4 are respectively and slidably arranged on the outside of the two second guide rods 41, and the second guide rods 41 and the axis of the clasp groove 111 are parallel to each other, and the moving locking shell 4 will slide along the outside of the second guide rod 41, so as to improve the stability of the locking shell 4 during movement, and a cover 14 is clamped and fixedly connected to the upper side wall of the polishing head base body 1, and the cover 14 is slidably arranged on the outside of the main shaft 2, and one end of the displacement mechanism 3 and the main shaft 2 is arranged in the inside of the cover 14, and the cover 14 is used to block the abrasive dust generated during polishing from adhering to the displacement mechanism 3, thereby ensuring the normal use of the displacement mechanism 3.

[0037] The polishing head is coaxially installed on the main shaft 2 of the motor during use, and the installation steps are as follows: the cover 14 is sleeved on the outside of the main shaft 2 from bottom to top, and then the frame 11 is sleeved on one end of the main shaft 2 of the motor, so that one end of the main shaft 2 is inserted into the inside of the frame 11, and one end of the main shaft 2 is in contact with the polishing head base body 1, at this time the locking groove 21 and the two clasp grooves 111 are in communication, the operator drives the two locking shells 4 to move close to each other through the displacement mechanism 3, when one end of the two locking shells 4 moves to the inside of the locking groove 21, the locking shell 4 prevents the main shaft 2 from moving in the inside of the frame 11, so as to install the polishing head on the main shaft 2 of the motor, and then the operator moves the cover 14 along the axis of the main shaft 2, so that the cover 14 is clamped and fixed on the upper side of the polishing head base body 1, at this time one end of the displacement mechanism 3 and the main shaft 2 is located in the inside of the cover 14, and the cover 14 plays a protective role on the displacement mechanism 3, when the main shaft 2 of the motor rotates, the main shaft 2 drives the frame 11, the polishing head base body 1 and the abrasive cloth 13 to rotate synchronously through the locking shell 4, by making the workpiece to be polished contact with the rotating abrasive cloth 13, the inner diameter surface of the workpiece can be polished, at this time the cover 14 blocks the abrasive dust generated during polishing from adhering to the displacement mechanism 3, thereby ensuring the normal use of the displacement mechanism 3.

[0038] The structure of the displacement mechanism 3 is as follows: the threaded rod 38 is rotatably arranged on one side of the sleeve frame 11, the sliding block 36 is threadedly connected to the threaded rod 38, the sliding block 36 is slidably arranged on the upper side of the polishing head base body 1, when the threaded rod 38 drives the sliding block 36 to move, the sliding block 36 moves towards or away from the sleeve frame 11, the axis of the threaded rod 38 is parallel to the side surface of the polishing head base body 1, the second rack 37 is fixedly connected to the two sides of the sliding block 36, the lower gear 35 is meshed with one side of the second rack 37, the lower gear 35 is rotatably arranged on the upper side of the polishing head base body 1, the connecting rod 31 is fixedly connected to one side of the locking shell 4, the two connecting rods 31 are respectively located on the two sides of the sleeve frame 11, the first rack 32 is fixedly connected to the other end of the connecting rod 31, the axis of the first rack 32 is parallel to the axis of the locking shell 4, the upper gear 34 is coaxially fixedly connected to the lower gear 35, the two first racks 32 are respectively meshed with the two upper gears 34, the displacement mechanism 3 further comprises a through groove formed in the first rack 32, the first guide rod 33 is fixedly connected to one side of the polishing head base body 1, the first guide rod 33 is slidably arranged in the through groove, the first guide rod 33 limits the movement path of the first rack 32, thereby improving the stability of the first rack 32 during movement, so as to ensure the stable meshing of the first rack 32 and the upper gear 34.

[0039] When the locking groove 21 and the two opposite grooves 111 are connected, the operator twists the threaded rod 38, the sliding block 36 moves away from the sleeve frame 11 along the axis of the threaded rod 38 through the threaded connection between the threaded rod 38 and the sliding block 36, the sliding block 36 drives the two second racks 37 to move synchronously, the lower gear 35 drives the upper gear 34 to rotate through the meshing transmission between the second rack 37 and the corresponding lower gear 35, the two first racks 32 drive the corresponding locking shell 4 to move close to the axis of the sleeve frame 11 through the meshing transmission between the upper gear 34 and the corresponding first rack 32 and the connecting rod 31, so that the two locking shells 4 move close to each other, the two locking shells 4 are inserted into the inside of the locking groove 21 synchronously, and the polishing head is installed on the main shaft 2 of the motor.

[0040] When the operator needs to replace the polishing head on the main shaft 2, the operator reversely rotates the threaded rod 38, the sliding block 36 moves close to the sleeve frame 11, the two first racks 32 drive the corresponding locking shell 4 to move away from the axis of the sleeve frame 11 through the connecting rod 31, after the two locking shells 4 are pulled out from the inside of the locking groove 21, the sleeve frame 11 can be separated from the main shaft 2, so that the operator can replace the polishing head according to the size of the hole diameter of the polished workpiece, and the polishing efficiency is improved.

[0041] The embodiment installs the polishing head on the main shaft 2 through the cooperation of the two locking shells 4 and the locking grooves 21, and drives the two locking shells 4 to move to disassemble and assemble the polishing head through the displacement mechanism 3. Compared with the embodiment 1, although the production cost of the polishing head is increased, the following advantages are obtained: 1. When the polishing head is disassembled and assembled, the stroke of the locking shell 4 in the locking groove 21 is only half of the pin rod 51, so that the operator can insert and pull out the locking shell 4 in the locking groove 21 more quickly, and the efficiency of the operator in disassembling and assembling the polishing head is improved; 2. When the operator pulls out the pin rod 51 from the locking groove 21, the nut 54 needs to be unscrewed from the bolt 53 first, and then the pin rod 51 is pulled out from the locking groove 21, so that two steps are time-consuming, and the operator can move the locking shell 4 out of the locking groove 21 through the action of screwing the threaded rod 38, so that the efficiency of the operator in disassembling and assembling the polishing head is improved; 3. After the operator unscrews the nut 54 from the bolt 53, the nut 54 and the bolt 53 are separated and easily fall to the ground, which is inconvenient for subsequent installation of the polishing head, the locking shell 4 is not separated from the second guide rod 41, so that the locking shell 4 locking the polishing head does not have the problem, and the safety in the process of disassembling and assembling the polishing head is improved.

[0042] The basic principle, main characteristics and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, the above embodiments and the description in the specification are only preferred examples of the utility model, and are not used to limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The protection scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A conical polishing head comprising a polishing head base body (1), characterized in that: The polishing head base body (1) is a circular truncated cone structure, a backing cloth (12) is fixedly arranged on the conical side surface of the polishing head base body (1), a sand cloth (13) is fixedly arranged on the conical side surface of the backing cloth (12), the sand cloth (13) and the backing cloth (12) are connected through a reverse winding path, and the sand cloth (13) and the backing cloth (12) are connected through an adhesive, one side of the polishing head base body (1) is fixedly connected with a sleeve frame (11), the sleeve frame (11) is an elliptical structure, the axis of the sleeve frame (11) and the polishing head base body (1) are located on the same straight line, two opposite slots (111) are formed in the two sides of the sleeve frame (11), a locking shell (4) is slidably arranged in the opposite slot (111), one end of a main shaft (2) is inserted into the inside of the sleeve frame (11), the locking slot (21) is communicated with the two opposite slots (111), when the two locking shells (4) are moved to the inside of the locking slot (21) at the end close to each other, the locking shell (4) fixes one end of the main shaft (2) in the inside of the sleeve frame (11), one side of the polishing head base body (1) is provided with a displacement mechanism (3), and the displacement mechanism (3) is used to drive the two locking shells (4) to relatively move.

2. The conical polishing head of claim 1, wherein: The displacement mechanism (3) comprises a threaded rod (38) rotatably arranged on one side of the sleeve frame (11), a sliding block (36) threadedly connected to the threaded rod (38), the sliding block (36) is slidably arranged on the upper side of the polishing head base body (1), the two sides of the sliding block (36) are fixedly connected with second racks (37), one side of the second rack (37) is engaged with a lower gear (35), and the lower gear (35) is rotatably arranged on the upper side of the polishing head base body (1).

3. The conical polishing head of claim 2, wherein: The displacement mechanism (3) further comprises a connecting rod (31) fixedly connected to one side of the locking shell (4), two connecting rods (31) are respectively located on the two sides of the sleeve frame (11), one end of the connecting rod (31) is fixedly connected with a first rack (32), the axis of the first rack (32) and the axis of the locking shell (4) are parallel to each other, the lower gear (35) is coaxially fixedly connected with an upper gear (34), and the two first racks (32) are engaged with the two upper gears (34) respectively.

4. The conical polishing head of claim 3, wherein: The displacement mechanism (3) further comprises a through groove formed in the first rack (32), and two first guide rods (33) are symmetrically fixedly connected to one side of the polishing head base body (1), and the two first guide rods (33) are slidably arranged in the two through grooves respectively.

5. The conical polishing head of claim 1, wherein: Two second guide rods (41) are symmetrically fixedly connected to one side of the polishing head base body (1), and the two locking shells (4) are slidably arranged on the outer sides of the two second guide rods (41).

6. The conical polishing head of claim 1, wherein: A cover (14) is clamped and fixedly connected to the upper side wall of the polishing head base body (1), the cover (14) is slidably arranged on the outer side of the main shaft (2), and one end of the displacement mechanism (3) and the main shaft (2) is arranged in the inside of the cover (14).

7. The conical polishing head of claim 1, wherein: A cavity (15) is formed in the axis of the polishing head base body (1), and a reinforcing rod (22) is inserted into the inside of the cavity (15).

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