A polishing device

Abstract

The present invention relates to the technical field of polishing equipment, and specifically to a polishing device, comprising: a tool rod; a connecting rod, which is arranged to pass through the tool rod, and one end of the connecting rod passing through the tool rod is provided with a stop structure, and the stop structure cooperates with the side stop of the tool rod; a fixed seat, which is used to fix the polishing material, and the fixed seat is fixedly connected to the other end of the connecting rod passing through the tool rod; a spring, which is sleeved on the outside of the connecting rod, and the spring is installed between the tool rod and the fixed seat; a guide rod, which is slidably matched with the tool rod guide, and one end of the guide rod is fixedly connected to the fixed seat. Beneficial effect: The guide rod is specially slidably matched with the tool rod guide, and the connecting rod does not need to cooperate with the tool rod guide. The connecting rod is only responsible for connecting the fixed seat and being sleeved with the spring, and does not need to have a length that cooperates with the tool rod guide. Therefore, the connecting rod can be set shorter, so that the lateral size of the polishing device can be reduced, so that the polishing device can process parts with relatively small inner holes, thereby expanding the scope of application of the polishing device.

Description

Technical Field

[0001] The invention relates to the technical field of polishing equipment, and in particular to a polishing device. Background Art

[0002] The inner cylindrical surface of some parts is the piston movement mating surface, which requires good sealing and low friction. The requirements for the inner cylindricality and surface roughness are crucial to product performance. At present, the requirements for cylindricality can basically meet the quality requirements by improving production conditions such as clamping methods and turning tool materials and geometric parameters; however, the surface roughness value of the inner cylindrical surface deteriorates after hard anodizing treatment, and needs to be "polished" to improve.

[0003] In this regard, the Chinese utility model patent with the authorization announcement number CN201154456Y discloses a conical inner hole honing tool, which includes a tool bar, a spring, a spring shaft, an oilstone holder, and an oilstone. The tool bar is radially provided with a stepped hole, the spring is sleeved on the spring shaft, the spring shaft and the spring are installed in the stepped hole, one end of the spring shaft passing through the tool bar is limited on the tool bar by a nut, and the other end is riveted with an oilstone holder, and the oilstone is fixed in the oilstone holder. When in use, the compressibility of the spring can be used to automatically adjust the clamping force to ensure the processing accuracy and surface roughness requirements.

[0004] The spring shaft of the above-mentioned honing tool must not only cooperate with the tool rod guide slidingly, but also provide a spring sleeve to achieve floating polishing, so the length of the spring shaft needs to be set relatively long. This will cause the lateral size of the honing tool to be relatively large, and it can only process parts with larger inner holes. It cannot be used for parts with smaller inner holes, and its scope of application is limited. Summary of the invention

[0005] The object of the present invention is to provide a polishing device with a wider application range.

[0006] To achieve the above purpose, the polishing device in the present invention adopts the following technical solution:

[0007] A polishing device, comprising:

[0008] Tool bar;

[0009] A connecting rod is arranged through the knife rod, and one end of the connecting rod passing through the knife rod is provided with a stop structure, and the stop structure is used to cooperate with the side stop of the knife rod;

[0010] A fixing seat, used to fix the polishing material, the fixing seat is fixedly connected to the other end of the connecting rod passing through the knife rod;

[0011] A spring is sleeved on the outside of the connecting rod, and the spring is installed between the knife rod and the fixed seat, or the spring is installed between the knife rod and the connecting rod, so that the fixed seat can float relative to the knife rod;

[0012] The polishing device also includes:

[0013] The guide rod is slidably matched with the knife rod guide, and one end of the guide rod is fixedly connected to the fixed seat to guide the floating of the fixed seat.

[0014] The beneficial effect of the above technical solution is that the polishing device also includes a separately arranged guide rod, one end of which is fixedly connected to the fixed seat, and the guide rod is specifically cooperated with the tool rod guide sliding, so as to guide the floating of the fixed seat. In this way, it is not necessary for the connecting rod to cooperate with the tool rod guide sliding. The function of the guide sliding cooperation is taken care of by the guide rod. The connecting rod is only responsible for connecting the fixed seat and providing a spring set, and does not need to have a length that cooperates with the tool rod guide. Therefore, the connecting rod can be set shorter, so that the lateral size of the polishing device can be reduced, so that the polishing device can process parts with relatively small inner holes, thereby expanding the scope of application of the polishing device.

[0015] Furthermore, in order to reduce the sliding friction between the guide rod and the knife rod and make the fixed seat float smoothly, a groove for accommodating lubricating oil is provided on the surface of the guide rod.

[0016] Furthermore, in order to improve the lubrication effect, the groove is spiral.

[0017] Furthermore, in order to facilitate the configuration of the guide rod and ensure the guiding effect, the guide rod is a cylindrical rod, and there are at least two guide rods, each of which is evenly distributed around the circumference of the connecting rod.

[0018] Furthermore, in order to facilitate the installation of the spring, make full use of the tool rod, and reduce the lateral size of the polishing device, a stepped hole is provided on the tool rod for the connecting rod to pass through, and the spring is installed in the large hole section of the stepped hole, and one end of the spring is pressed against the step surface of the stepped hole.

[0019] Furthermore, in order to facilitate the arrangement of the connecting rod, the connecting rod is a connecting bolt, and the stopping structure is composed of a bolt head of the connecting bolt.

[0020] Furthermore, in order to facilitate the installation and fixation of the polishing material, the fixing seat is U-shaped, and the fixing seat includes two side walls and a connecting wall connecting the two side walls. The connecting rod and the guide rod are fixedly connected to the connecting wall, and at least one of the two side walls is installed with a tightening bolt for clamping the polishing material.

[0021] Furthermore, in order to facilitate clamping of the polishing material, the polishing device also includes a pad for being arranged between two side walls of the fixing seat, the pad is used to clamp the polishing material, and the tightening bolt is tightened on the pad.

[0022] Furthermore, in order to improve the polishing efficiency, the polishing device also includes a polishing head, which has a tightening portion for being arranged between two side walls of the fixed seat to be tightened by a tightening bolt, and the polishing head also has a wrapping portion for wrapping the polishing material on the outside, and the wrapping portion has an arc-shaped outer surface for matching the inner hole wall of the part to be polished.

[0023] Furthermore, in order to facilitate assembly and ensure the fixing effect of the polishing material, a pressure plate is installed on the polishing head through fastening bolts. The pressure plate is used to press the polishing material wrapped outside the wrapping part onto the polishing head, and the mating surfaces of the pressure plate and the polishing head are respectively provided with interlocking teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the polishing device in the present invention when the polishing material is not installed;

[0025] Figure 2 This is a structural diagram of the polishing device of the present invention after the polishing head is installed (rough polishing);

[0026] Figure 3 for Figure 2 A side view of the polishing head structure;

[0027] Figure 4 for Figure 1 The structure diagram of the polishing device after installing the polishing cloth (fine polishing);

[0028] Figure 5 for Figure 1 and Figure 2 The structural diagram of the middle knife bar body;

[0029] Figure 6 for Figure 1 and Figure 2 Structural diagram of the middle fixed seat;

[0030] Figure 7 for Figure 6 Side view of

[0031] Figure 8 for Figure 1 and Figure 2 Structural diagram of the middle guide rod.

[0032] In the figure: 10-tool handle; 20-locking nut; 30-tool body; 31-threaded section; 32-screwing part; 33-guide hole; 34-step hole; 40-guide rod; 41-screwing section; 42-guide section; 43-connecting section; 44-groove; 50-spring; 60-connecting bolt; 70-fixed seat; 71-tension bolt; 72-pad; 73-polishing cloth; 74-threaded hole; 75-mounting hole; 80-polishing head; 81-wrapping part; 82-first pressure plate; 83-first fastening bolt; 84-second pressure plate; 85-second fastening bolt; 86-sandpaper; 87-tension part. DETAILED DESCRIPTION

[0033] An embodiment of the polishing device of the present invention is as follows Figure 1 As shown, the tool bar comprises a tool handle 10 and a tool bar body 30. When in use, the tool handle 10 is fixed on the machine tool. The structure of the tool bar body 30 is as shown in FIG. Figure 5 As shown, the shank body 30 includes a threaded section 31 and a screwing portion 32 . The shank body 30 can be threadedly connected to the shank 10 via the screwing portion 32 . To prevent loosening, a locking nut 20 is connected to the threaded section 31 .

[0034] A connecting rod is provided through the tool rod body 30. The connecting rod in this embodiment is a connecting bolt 60. A stepped hole 34 is provided on the tool rod body 30 for the connecting bolt 60 to pass through. The bolt head of the connecting bolt 60 is located outside the tool rod body 30, forming a stop structure that cooperates with the side stop of the tool rod body 30, thereby limiting the connecting bolt 60.

[0035] The end of the connecting bolt 60 passes through the arbor body 30 and is threadedly connected to the fixing seat 70. A spring 50 is sleeved on the outside of the connecting bolt 60. The spring 50 is installed in the large hole section of the stepped hole 34. One end of the spring 50 presses on the step surface of the stepped hole 34 and the other end presses on the fixing seat 70, so that the fixing seat 70 can float relative to the arbor body 30.

[0036] The shank body 30 is also provided with two guide rods 40 for guiding and sliding. For this purpose, two guide holes 33 are provided on the shank body 30. The guide rods 40 are used to guide the floating of the fixing seat 70. The two guide rods 40 are arranged in a row with the connecting bolts 60 and are symmetrically arranged relative to the connecting bolts 60. Figure 8 As shown, the guide rod 40 includes a screwing section 41, a guide section 42 and a connecting section 43 in sequence, wherein the connecting section 43 is an external threaded section for threaded connection with the fixing seat 70. For this purpose, a plurality of threaded holes 74 are provided on the fixing seat 70 to facilitate threaded connection with the guide rod 40 and the connecting bolt 60.

[0037] The guide section 42 is a cylindrical rod, and a groove 44 for accommodating lubricating oil is arranged on the outer cylindrical surface of the guide section 42, and the groove 44 is spiral, so that the sliding friction between the guide section 42 and the guide hole 33 is small enough to ensure smooth floating of the fixing seat 70.

[0038] Combination Figure 6 and Figure 7 As shown, the fixing seat 70 is U-shaped, including two side walls and a connecting wall connecting the two side walls, and three threaded holes 74 are provided on the connecting wall. Figure 4 As shown, a plurality of mounting holes 75 for mounting the tightening bolts 71 are provided on both side walls, and it is obvious that the mounting holes 75 are threaded holes.

[0039] The polishing device of the present invention can be used in two ways: one is rough polishing, such as Figure 2 and Figure 3 As shown, at this time, a polishing head 80 needs to be installed on the fixing seat 70. The polishing head 80 has a tightening portion 87 for being arranged between the two side walls of the fixing seat 70 to be tightened by the tightening bolt 71. The polishing head 80 also has a sandpaper 86 ( Figure 3 The wrapping portion 81 is wrapped around the outside of the sandpaper 86 (only part of the sandpaper is shown in the figure), and the wrapping portion 81 has an arc-shaped outer surface for matching the inner hole wall of the part to be polished, so that the contact area between the sandpaper 86 and the inner hole wall of the part to be polished can be increased, thereby improving the polishing efficiency.

[0040] A pressing plate is installed on the polishing head 80 through fastening bolts, and the pressing plate is used to press the two ends of the sandpaper 86, so as to press the sandpaper 86 onto the polishing head 80. There are two sets of fastening bolts and pressing plates, including a first pressing plate 82, a first fastening bolt 83, a second pressing plate 84, and a second fastening bolt 85. The first pressing plate 82 is fixed to the polishing head 80 through three first fastening bolts 83, and the second pressing plate 84 is fixed to the polishing head 80 through three second fastening bolts 85, and the corresponding two first fastening bolts and second fastening bolts are threadedly connected in the same threaded hole on the polishing head 80.

[0041] In addition, mutually engaging teeth are respectively arranged on the relative joint surfaces of each pressing plate and the polishing head, so that the sandpaper 86 is clamped at the position of the engaging teeth, which can ensure the fixing effect of the sandpaper.

[0042] The second use of the polishing device in the present invention is fine polishing, such as Figure 4 As shown, during fine polishing, a pad 72 needs to be set between the two side walls of the fixed seat 70. In this embodiment, there are three pads 72. The polishing cloth 73 passes around the middle pad and is clamped by the pads on both sides. The tightening bolts 71 are tightened on the pads 72 respectively.

[0043] When using it, you can choose to rough polish first, then fine polish, or directly fine polish according to the inner hole wall accuracy of the part to be polished to ensure the polishing efficiency.

[0044] The polishing device of the present invention is specially provided with a guide rod, which is responsible for guiding. There is no need for the connecting bolt to slide with the tool rod body 30, that is, the connecting bolt does not need to have a guide fitting section, so the connecting bolt does not need to be too long, which can reduce the lateral size of the polishing device, so that the polishing device can process parts with relatively small inner holes, thereby expanding the scope of application of the polishing device.

[0045] In other embodiments of the polishing device, the polishing head may not be connected to a pressure plate, for example, sandpaper is wrapped around the outside of the wrapping portion, and the tightening bolts are directly tightened on the sandpaper to fix the sandpaper.

[0046] In other embodiments of the polishing device, the polishing material wrapped around the outside of the wrapping portion may not be sandpaper, but a polishing cloth such as a scouring pad, a woolen cloth, or a velvet cloth.

[0047] In other embodiments of the polishing device, the polishing device does not include a polishing head, for example, only a pad is used to clamp the polishing material. Of course, the polishing device may also not include a pad, but only a polishing head is used.

[0048] In other embodiments of the polishing device, the polishing material clamped in the pad may also be a sandpaper strip or a honing stone.

[0049] In other embodiments of the polishing device, there may be only two pads and the polishing material is arranged between the two pads, or there may be only one pad, in which case the polishing material can be clamped by the side wall of the fixing seat cooperating with the pad.

[0050] In other embodiments of the polishing device, the backing plate may not be provided, and the polishing material may be clamped directly with the tightening bolts.

[0051] In other embodiments of the polishing device, the tightening bolt may be installed on only one of the side walls of the fixing seat.

[0052] In other embodiments of the polishing device, the fixing seat is not U-shaped, but has a cylindrical structure with a cylindrical bottom. In this case, the connecting rod and the guide rod are fixedly connected to the cylindrical bottom, and the tightening bolts are installed on the side wall of the cylindrical body.

[0053] In other embodiments of the polishing device, the connecting rod may not be a connecting bolt, but may be a connecting screw. In this case, a nut may be installed on the connecting screw to form a stopping structure, or the connecting rod may be an ordinary smooth rod with a large head at one end. In this case, the large head constitutes a stopping structure, and the other end is interference fitted with the fixing seat or welded.

[0054] In other embodiments of the polishing device, the arbor body may not be provided with a stepped hole, but may be provided with a through hole of equal diameter, in which case one end of the spring may be pressed against the end face of the arbor body.

[0055] In other embodiments of the polishing device, there may be three or more guide rods, but the guide rods are evenly distributed around the circumference with the connecting rod as the center.

[0056] In other embodiments of the polishing device, the groove may not be spiral, but a straight groove parallel to the axis of the guide rod.

[0057] In other embodiments of the polishing device, no grooves are provided on the surface of the guide rod.

[0058] In other embodiments of the polishing device, the guide rod may not include the screwing section and the connecting section, but may only consist of a cylindrical rod. In this case, the guide rod may be interference fitted with the fixing seat or fixed by welding.

[0059] In other embodiments of the polishing device, a flange or a step may be provided on the surface of the connecting rod, and the spring may be installed between the shank body and the connecting rod.

[0060] In other embodiments of the polishing device, the tool rod is only composed of the tool rod body and does not include the tool handle. In this case, the length of the tool rod body is long enough to be directly fixed on the machine tool.

Claims

1. A polishing device, comprising: Tool bar; A connecting rod is arranged through the knife rod, and one end of the connecting rod passing through the knife rod is provided with a stop structure, and the stop structure is used to cooperate with the side stop of the knife rod; A fixed seat, the fixed seat is fixedly connected to the other end of the connecting rod passing through the knife rod; A spring is sleeved on the outside of the connecting rod, and the spring is installed between the knife rod and the fixed seat, or the spring is installed between the knife rod and the connecting rod, so that the fixed seat can float relative to the knife rod; Characterized in that the polishing device also includes: A guide rod is slidably matched with the knife rod guide, one end of the guide rod is fixedly connected to the fixed seat, the fixed seat is U-shaped, and the fixed seat includes two side walls, each of which is equipped with a tightening bolt for clamping the polishing device; when the polishing device is in use, there are two ways of using it, one is rough polishing and the other is fine polishing; during rough polishing, the polishing device includes a polishing head, the polishing head has a tightening part for being arranged between the two side walls of the fixed seat to be tightened by the tightening bolt and a wrapping part for wrapping the polishing material on the outside, a pressing plate is installed on the polishing head through a tightening bolt, and the pressing plate is used to press the polishing material wrapped on the outside of the wrapping part onto the polishing head; During fine polishing, the polishing device includes three pads arranged between the two side walls of the fixing seat, the polishing cloth passes around the middle pad and is clamped by the pads on both sides, and the tightening bolts are tightened on the pads on both sides.

2. The polishing device according to claim 1, characterized in that: The surface of the guide rod is provided with grooves for containing lubricating oil.

3. The polishing device according to claim 2, characterized in that: The groove is spiral-shaped.

4. The polishing device according to any one of claims 1 to 3, characterized in that: The guide rod is a cylindrical rod, there are at least two guide rods, and the guide rods are evenly distributed around the circumference with the connecting rod as the center.

5. The polishing device according to any one of claims 1 to 3, characterized in that: The knife rod is provided with a stepped hole for the connecting rod to pass through, the spring is installed in the large hole section of the stepped hole, and one end of the spring is pressed against the step surface of the stepped hole.

6. The polishing device according to any one of claims 1 to 3, characterized in that: The connecting rod is a connecting bolt, and the stopping structure is formed by the bolt head of the connecting bolt.

7. The polishing device according to any one of claims 1 to 3, characterized in that: The fixing seat comprises a connecting wall connecting two side walls, and the connecting rod and the guide rod are both fixedly connected to the connecting wall.

8. The polishing device according to claim 7, characterized in that: The wrapping portion has an arc-shaped outer surface for matching with the inner hole wall of the part to be polished.

9. The polishing device according to claim 8, characterized in that: The joint surfaces of the pressing plate and the polishing head are respectively provided with engaging teeth which engage with each other.

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