Clamping tool for precision machining of polishing machine parts

Abstract

The utility model relates to the technical field of polishing machine part machining tools, in particular to a clamping tool for precise machining of polishing machine parts, which comprises a base, the base comprises a first side plate and a second side plate which are distributed at an interval, a movable clamping block is arranged on the first side plate and is in transmission connection with a clamping driving piece, and a fixed clamping block is arranged on the second side plate and is in transmission connection with the clamping driving piece. The movable clamping block and the fixed clamping block are oppositely arranged, and the movable clamping block can move towards the fixed clamping block so as to clamp the sponge polishing disc to be machined through the tool. A positioning groove is formed in the inner side wall, close to the fixed clamping block, of the movable clamping block, the positioning groove is of an arc concave surface structure, a plurality of first contact pins are evenly arranged on the periphery of the positioning groove in a winding mode, second contact pins are arranged on the inner side wall, close to the movable clamping block, of the fixed clamping block, and the first contact pins and the second contact pins can be inserted into the sponge polishing disc during clamping. The clamping tool structure is beneficial for solving the problem that no suitable clamping tool structure is provided at present to reduce collapse, extension and deformation of the sponge polishing disc before and after clamping.

Description

TECHNICAL FIELD

[0001] The utility model relates to a polishing machine component machining frock technical field, especially to a kind of clamping frock for the precision machining of sponge polishing disc in polishing machine component. BACKGROUND

[0002] After polishing disc is made, it needs to be installed on polishing device, so edge size needs certain precision requirement, so edge cutting or chamfering process is needed.

[0003] The patent with publication number CN212825549U discloses an edge cutting workbench for sponge polishing disc, which comprises a table top, a polishing disc loading assembly, a polishing disc limiting assembly and a cutting assembly. The polishing disc loading assembly, the polishing disc limiting assembly and the cutting assembly are all fixed on the upper surface of the table top. The polishing disc loading assembly and the polishing disc limiting assembly are located on the same axis, and the cutting assembly is located on one side of the polishing disc limiting assembly. The polishing disc loading assembly pushes the sponge polishing disc to move towards the polishing disc limiting assembly for limiting, and the cutting assembly approaches the edge of the sponge polishing disc to complete the edge cutting. In this technical solution, a set of polishing disc mounting disc and limiting disc capable of moving towards each other are used to realize the frock of the sponge polishing disc to be edge cut. The thickness of conventional sponge polishing disc is between 25.4mm and 50.8mm. Since it has a certain flexibility, the sponge polishing disc will collapse to a certain extent after being clamped. In the above technical solution, only the simple clamping disc body is used to clamp the two sides of the sponge polishing disc in a surface contact manner. In order to keep the posture of the sponge polishing disc stable during edge cutting, a part of the clamped sponge polishing disc will be ignored. The collapse and expansion deformation of the sponge polishing disc before and after clamping will easily lead to low cutting angle and edge grinding machining precision, and it is difficult to ensure the precise machining of the sponge polishing disc during edge cutting or chamfering. SUMMARY

[0004] The utility model provides a kind of clamping frock for polishing machine component precision machining, it is favorable to solve the problem that there is no suitable clamping frock structure to reduce the collapse and expansion deformation of sponge polishing disc before and after clamping.

[0005] The utility model is implemented as follows:

[0006] A kind of clamping tool for polishing machine component precision machining, including base, base includes first side plate and second side plate spaced distribution, first side plate is provided with movable clamp block, movable clamp block is transmission connection with clamping driving element, second side plate is provided with fixed clamp block, movable clamp block and fixed clamp block are oppositely arranged, movable clamp block can be displaced towards fixed clamp block to clamp the sponge polishing disc of tool to be processed;The inner side wall of movable clamp block close to fixed clamp block is equipped with positioning groove, and the positioning groove is circular arc concave structure, a plurality of first pins are uniformly arranged around the positioning groove, the inner side wall of fixed clamp block close to movable clamp block is equipped with second pin, and the first pin and second pin can be inserted into the sponge polishing disc when clamping.

[0007] On the basis of the above technical scheme, the base and movable clamp block are provided with a position detection structure for detecting the displacement stroke of the movable clamp block.

[0008] On the basis of the above technical scheme, the position detection structure includes a position sensor mounted on the base and a follower block mounted on the movable clamp block.

[0009] On the basis of the above technical scheme, the back of the movable clamp block is provided with a back groove, and a plurality of spaced longitudinally distributed mounting holes are arranged in the back groove, and the follower block is adjustably mounted on the bottom of the movable clamp block by cooperating with the mounting holes through fasteners.

[0010] On the basis of the above technical scheme, the first side plate is connected with a lifting plate capable of being adjusted in position up and down, and the movable clamp block and the clamping driving element are arranged on the lifting plate.

[0011] On the basis of the above technical scheme, the movable clamp block includes a mounting seat, and a tool block is connected to the inner side wall of the mounting seat, and the positioning groove and the first pin are arranged on the inner side wall of the tool block.

[0012] On the basis of the above technical scheme, the first pin and the second pin are arranged in a staggered manner.

[0013] On the basis of the above technical scheme, the outer side wall of the second pin is provided with a wing plate.

[0014] On the basis of the above technical scheme, the wing plate is provided with a chamfered portion relative to the outer side end of the second pin in the axial direction.

[0015] Compared with the prior art, the present application has at least the following advantages:

[0016] The utility model discloses an improved clamping structure is provided with the positioning groove and first pin on the movable clamp block, is provided with the second pin on the fixed clamp block, which makes the movable clamp block and the fixed clamp block carry out the double -sided clamping to the sponge polishing disc of processing, and the first pin and the second pin can be inserted into the sponge polishing disc and play the stable restraint effect relatively without damage to the structural characteristics of the sponge polishing disc, and the inside wall of movable clamp block and fixed clamp block forms the face contact type clamping tool to the sponge polishing disc, and the first pin and the second pin provide the stable structure fixed to the close circumferential area of the sponge polishing disc, which effectively reduces the collapse extension deformation of the sponge polishing disc in the clamping process, improves the machining precision of the edge cutting or chamfering process. Meanwhile, through the in -place detection structure, lifting plate and other designs, the versatility and flexibility of the tool are enhanced, and are suitable for the machining demand of different specifications and shapes of the sponge polishing disc. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced to the drawing needed to be used in the embodiment, and should understand, the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other related drawings according to these drawings.

[0018] Figure 1 It is the structure schematic diagram of the clamping tool for polishing machine component precision machining in an embodiment;

[0019] Figure 2 It is Figure 1 The structure schematic diagram of movable clamp block in an embodiment;

[0020] Figure 3 It is Figure 2 The sectional view of an embodiment;

[0021] Figure 4 It is Figure 2 The back structure schematic diagram of movable clamp block in an embodiment;

[0022] Figure 5 It is Figure 1 The structure schematic diagram of fixed clamp block in an embodiment;

[0023] Figure 6 It is Figure 5 The structure schematic diagram of single second pin in an embodiment.

[0024] Annotations in the figure: 100, base; 101, bottom plate; 102, first side plate; 103, second side plate; 104, lifting plate; 200, movable clamping block; 210, mounting seat; 220, tool block; 230, positioning groove; 240, first pin; 250, back groove; 251, mounting hole; 300, fixed clamping block; 310, second pin; 311, side wing plate; 312, angle cutting part; 400, clamping driving piece; 500, in-place sensor; 600, follow-up block. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only to represent selected embodiments of the present application.

[0026] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0027] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on another element or there can be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to one element or there can be a middle element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration, and do not represent the only embodiment.

[0028] The present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0029] In conjunction with Figures 1-6 The present embodiment discloses a clamping tool for precision machining of polishing machine parts, aiming to improve the clamping method, reduce the collapse and extension deformation of the sponge polishing disc during the clamping process, and thereby improve the machining precision of the edge cutting or chamfering process.

[0030] The clamping tool specifically comprises a base 100, the base 100 comprising a horizontal bottom plate 101, the left and right sides of the bottom plate 101 being provided with first side plates 102 and second side plates 103 distributed at intervals, the first side plates 102 and the second side plates 103 both being vertical plate body structures, constituting a stable support foundation structure.

[0031] In order to improve the versatility and flexibility of the clamping tool, a lifting plate 104 is movably connected to the inner side wall of the first side plate 102, the lifting plate 104 being connected with the first side plate 102 through bolts and strip-shaped holes. In actual application, the lifting plate 104 can be adjusted in height to a certain extent according to actual needs. By adjusting the height of the lifting plate 104, the clamping tool can be adapted to sponge polishing discs of different sizes and thicknesses, thereby expanding the use range of the tool.

[0032] The lifting plate 104 is provided with a movable clamping block 200, the movable clamping block 200 being drivingly connected with a clamping driving member 400. In the present embodiment, the clamping driving member 400 is a pneumatic cylinder, which can drive the movable clamping block 200 to move laterally. Specifically, in combination with Figure 1 , the movable clamping block 200 can be moved laterally to the right to perform clamping operation.

[0033] The second side plate 103 is provided with a fixed clamping block 300, the movable clamping block 200 and the fixed clamping block 300 being oppositely arranged, the movable clamping block 200 being capable of being displaced towards the fixed clamping block 300 to clamp the sponge polishing disc to be processed by the clamping tool.

[0034] Further, in combination with Figure 2 and Figure 3 , the movable clamping block 200 comprises a mounting seat 210 of disc structure, the mounting seat 210 being connected to the end of the telescopic rod of the clamping driving member 400, and a tool block 220 being connected to the inner side wall of the mounting seat 210 through a countersunk bolt. This design makes the tool block 220 convenient to replace or adjust, so as to adapt to sponge polishing discs of different specifications and shapes.

[0035] The inner side wall of the tool block 220 close to the fixed clamping block 300 is provided with a positioning groove 230, the positioning groove 230 being a circular arc concave structure, which matches the outer contour of the sponge polishing disc, so as to reduce stress concentration during clamping. A plurality of first pins 240 are uniformly arranged around the positioning groove 230, and a second pin 310 is arranged on the inner side wall of the fixed clamping block 300 close to the movable clamping block 200. The first pins 240 and the second pin 310 can be inserted into the sponge polishing disc during clamping, further stabilizing the posture of the sponge polishing disc in a multi-point support manner, reducing its collapse deformation, and also enhancing the structural strength of the outer circumferential region of the sponge polishing disc, improving the edge cutting or edge grinding processing effect. It should be noted that the positions of the first pins 240 and the second pin 310 will not interfere with the processing position of the edge cutting or edge grinding.

[0036] In order to accurately control the displacement stroke of the movable clamp block 200 and ensure moderate clamping force, a position detection structure is arranged between the base 100 and the movable clamp block 200 for detecting the displacement stroke of the movable clamp block 200. Specifically, as shown in the drawings, the position detection structure comprises a position sensor 500 mounted on the base 100 and a follower block 600 mounted on the movable clamp block 200. When the movable clamp block 200 is displaced to a predetermined position relative to the fixed clamp block 300, the follower block 600 triggers the position sensor 500 to send a signal to stop the further action of the clamping drive 400, thereby avoiding damage or further deformation of the sponge polishing disc caused by excessive clamping. Figure 1

[0037] In combination with the above, Figure 4 In order to enhance the flexibility and adaptability of the position detection structure, a back groove 250 is arranged on the back of the movable clamp block 200, and four spaced longitudinal mounting holes 251 are arranged in the back groove 250. The mounting holes 251 are threaded holes, and the follower block 600 is adjustably mounted on the bottom of the movable clamp block 200 by cooperating with the mounting holes 251 through fasteners (bolts). In this way, according to different thicknesses of the sponge polishing disc and clamping requirements, the position of the follower block 600 can be easily adjusted, and the height adjustment of the lifting plate 104 is matched to ensure the accuracy of the position detection.

[0038] In order to improve the supporting effect of the first pin 240 and the second pin 310 and reduce the deformation of the sponge polishing disc during clamping, the first pin 240 and the second pin 310 are designed to be arranged in a staggered manner. This staggered arrangement enables the pins to be more evenly distributed around the sponge polishing disc, providing more stable support.

[0039] Further, in order to enhance the insertion effect and stability of the second pin 310, a side wing plate 311 is arranged on the outer side wall of the second pin 310. The side wing plate 311 not only increases the contact area between the pin and the sponge polishing disc, but also prevents the pin from bending or breaking due to uneven force during insertion. At the same time, the side wing plate 311 is provided with a chamfered portion 312 at the outer side end relative to the axial direction of the second pin 310, which facilitates the smooth insertion of the pin into the sponge polishing disc and reduces the insertion resistance.

[0040] The above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions described in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents. The modifications or replacements do not change the essence of the corresponding technical solutions, and are within the spirit and scope of the technical solutions of the embodiments of the present application.​

Claims

1. A clamping tool for precision machining of a polishing machine component, characterized by, The base (100) comprises a first side plate (102) and a second side plate (103) which are spaced apart, the first side plate (102) is provided with a movable clamp block (200), the movable clamp block (200) is drivingly connected with a clamping driving element (400), the second side plate (103) is provided with a fixed clamp block (300), the movable clamp block (200) and the fixed clamp block (300) are oppositely arranged, the movable clamp block (200) can be displaced towards the fixed clamp block (300) to clamp a sponge polishing disc to be processed of a tool; the inner side wall of the movable clamp block (200) close to the fixed clamp block (300) is provided with a positioning groove (230), the positioning groove (230) is a circular arc concave structure, a plurality of first pins (240) are uniformly arranged around the positioning groove (230), the inner side wall of the fixed clamp block (300) close to the movable clamp block (200) is provided with a second pin (310), the first pin (240) and the second pin (310) can be inserted into the sponge polishing disc during clamping.

2. The clamping tool for precision machining of a polishing machine component according to claim 1, wherein, The base (100) and the movable clamp block (200) are provided with a position detection structure for detecting the displacement stroke of the movable clamp block (200).

3. The clamping tool for precision machining of a polishing machine component according to claim 2, wherein, The position detection structure comprises a position sensor (500) mounted on the base (100) and a follower block (600) mounted on the movable clamp block (200).

4. The clamping tool for precision machining of a polishing machine component according to claim 3, wherein, The back surface of the movable clamp block (200) is provided with a back groove (250), a plurality of spaced longitudinally arranged mounting holes (251) are arranged in the back groove (250), the follower block (600) is adjustably mounted on the bottom of the movable clamp block (200) through the cooperation of fasteners and the mounting holes (251).

5. The clamping tool for precision machining of a polishing machine component according to claim 4, wherein, The first side plate (102) is connected with a lifting plate (104) which can be adjusted in position up and down, the movable clamp block (200) and the clamping driving element (400) are arranged on the lifting plate (104).

6. The holding tool for precision machining of a polishing machine component according to claim 1, wherein The movable clamp block (200) comprises a mounting seat (210), the inner side wall of the mounting seat (210) is connected with a tool block (220), the positioning groove (230) and the first pin (240) are arranged on the inner side wall of the tool block (220).

7. The holding tool for precision machining of a polishing machine component according to claim 1, wherein The first pin (240) and the second pin (310) are arranged in a staggered manner.

8. The holding tool for precision machining of a polishing machine component according to claim 1, wherein The outer side wall of the second pin (310) is provided with a wing plate (311).

9. The clamping tool for precision machining of a polishing machine component according to claim 8, wherein, The wing plate (311) is provided with a chamfered portion (312) at the outer side end axially opposite to the second pin (310).

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