Positioning tool for eccentric block key groove machining

Abstract

The utility model discloses a positioning tool for eccentric block keyway processing, which comprises a positioning mandrel and an expansion sleeve positioning assembly which are arranged on a positioning disc, the positioning disc is provided with a first mounting hole and a plurality of second mounting holes, the circumferential inner wall of the first mounting hole is provided with a receding keyway, the positioning mandrel is fixedly arranged in the first mounting hole, and the expansion sleeve positioning assembly is fixedly arranged in the second mounting hole. A guiding key groove is formed in the circumferential outer wall of the positioning mandrel and is opposite to the receding key groove. The expansion sleeve positioning assembly comprises an air cylinder fixed to the bottom face of the positioning disc, a connecting rod is fixedly arranged at the telescopic end of the air cylinder, a conical head is arranged at the top end of the connecting rod, the expansion sleeve positioning assembly further comprises an expansion sleeve, the expansion sleeve is fixedly arranged in the second mounting hole, the top end of the expansion sleeve extends to the position above the second mounting hole, the connecting rod is embedded in the expansion sleeve, and the conical head penetrates through the expansion sleeve. The tool has the advantages of being simple in structure, convenient to use, high in positioning accuracy and positioning efficiency, capable of guaranteeing the symmetry degree of the key groove relative to the axis of the eccentric block, capable of avoiding angular deviation of the key groove of the eccentric block and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of eccentric block keyway processing, in particular to a positioning tool for eccentric block keyway processing. Background Art

[0002] The exciter is a device attached to certain equipment to generate excitation force, which is used to realize the work of conveying, screening, compacting, shaping and tamping of soil and gravel. The exciter generates the excitation source through the high-speed rotation of the eccentric block on the rotating shaft. The keyway processing accuracy of the eccentric block will affect its installation accuracy, and then affect the excitation force and amplitude direction of the exciter. Figure 1 The eccentric block shown in the figure is provided with an axial hole and a process hole. Most of the existing eccentric block positioning tools position the eccentric block by a positioning mandrel in conjunction with a number of positioning pins, but there are problems such as low positioning accuracy, inconvenient use, and low positioning efficiency. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a positioning tool for eccentric block keyway processing, which has a simple structure, is easy to use, has high positioning accuracy and positioning efficiency, can quickly and accurately position and fix the eccentric block, ensure the symmetry of the keyway with respect to the axis of the eccentric block, avoid angular deviation of the keyway of the eccentric block, ensure that the exciting force and amplitude direction of the exciter are more accurate, so as to effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a positioning tool for eccentric block keyway processing, comprising a positioning core shaft and an expansion sleeve positioning assembly provided on a positioning plate, the positioning plate being provided with a mounting hole one, a yield keyway being provided on the circumferential inner wall of the mounting hole one in the vertical direction, and a plurality of mounting holes two being provided on the positioning plate at the periphery of the mounting hole one; the positioning core shaft being fixedly arranged in the mounting hole one, a guide keyway being provided on the circumferential outer wall of the positioning core shaft, and the guide keyway being arranged opposite to the yield keyway; the expansion sleeve positioning assembly comprising a cylinder fixed to the bottom surface of the positioning plate, a connecting rod being fixedly arranged at the telescopic end of the cylinder, a cone head being provided at the top end of the connecting rod, the expansion sleeve positioning assembly also comprising an expansion sleeve, the expansion sleeve being fixedly arranged in the mounting hole two, and the top end of the expansion sleeve extending to the top of the mounting hole two, the connecting rod being nested in the expansion sleeve, and the cone head passing through the expansion sleeve; the number of the expansion sleeve positioning assemblies is not less than two.

[0005] Furthermore, the expansion sleeve includes a base fixed in the first mounting hole, an elastic ring sleeve is provided at the top of the base, and deformation notches are provided at equal intervals at the top of the elastic ring sleeve along its circumferential direction.

[0006] Furthermore, the mounting hole 2 is a stepped hole structure, and a threaded hole 3 is provided on the stepped surface of the mounting hole 2; a connecting hole 2 is provided on the base at a position corresponding to the threaded hole 3, and the base is fixedly connected to the stepped surface of the mounting hole 2 by a fixing bolt passing through the connecting hole 2 and the threaded hole 3.

[0007] Furthermore, the cone head is detachably fixedly connected to the connecting rod via a connecting bolt.

[0008] Furthermore, the mounting hole 1 is a stepped hole structure, and a threaded hole 1 is provided on the mounting hole 1; a shoulder is provided at the bottom end of the positioning core shaft, and a connecting hole 1 is provided on the shoulder at a position corresponding to the threaded hole 1, and the positioning core shaft is fixedly connected to the stepped surface of the mounting hole 1 by a fixing bolt passing through the threaded hole 1 and the connecting hole 1.

[0009] Furthermore, a positioning notch is provided on the circumferential side wall of the shoulder, and a threaded hole 2 is provided on the step surface of the mounting hole 1 at the center of the corresponding positioning notch. An OK clamp is provided in the positioning notch of the shoulder, and the OK clamp includes a pressure block and push blocks slidably provided on both sides of the pressure block. A connecting bolt 2 is provided on the top of the pressure block, and the connecting bolt 2 is threadedly connected to the threaded hole 2, and the push blocks on both sides are tightly fitted with the two end surfaces of the shoulder positioning notch respectively.

[0010] Furthermore, a plurality of vertical clamps are fixedly provided on the positioning plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the positioning tool for processing the keyway of the eccentric block positions the axial hole of the eccentric block through the positioning mandrel, positions and tightens the process hole of the eccentric block through the expansion sleeve, and fixes the eccentric block with the vertical clamp, so that the eccentric block can be quickly positioned and fixed with high precision; the cutting movement of the broach is guided and given way by the guide keyway on the positioning mandrel and the giveway keyway on the positioning plate, so as to ensure that the broach accurately processes the keyway of the eccentric block, and the installation accuracy of the positioning mandrel is improved by the OK clamp, so as to further improve the processing accuracy of the keyway of the eccentric block. The positioning tool has a simple structure, is easy to use, has high positioning accuracy and positioning efficiency, ensures the symmetry of the keyway with respect to the axis of the eccentric block, avoids angular deviation of the keyway of the eccentric block, and ensures that the exciting force and amplitude direction of the exciter are more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the eccentric block structure;

[0013] Figure 2 This is a schematic diagram of the positioning tool structure of the utility model;

[0014] Figure 3 This is the axonometric drawing of the positioning tooling of the utility model;

[0015] Figure 4This is a schematic diagram of the structure of the positioning plate of the utility model;

[0016] Figure 5 This is a schematic diagram of the local structure of the positioning plate of the utility model;

[0017] Figure 6 This is a schematic diagram of the structure of the expansion sleeve positioning component of the utility model;

[0018] Figure 7 This is an exploded schematic diagram of the expansion sleeve positioning assembly of the utility model;

[0019] Figure 8 This is a schematic diagram of the expansion sleeve structure of the utility model;

[0020] Fig. 9 This is a schematic diagram of the positioning mandrel structure of the utility model;

[0021] Fig.10 This is a schematic diagram of the OK clip structure of the utility model;

[0022] Fig.11 This is a schematic diagram of the structure of the positioning tool of the utility model when in use;

[0023] Fig.12 It is a cross-sectional view of the expansion sleeve positioning component of the utility model.

[0024] In the figure: 1. positioning plate; 101. mounting hole one; 102. giving way keyway; 103. threaded hole one; 104. mounting hole two; 105. threaded hole two; 2. positioning mandrel; 21. guide keyway; 22. shaft shoulder; 23. connecting hole one; 3. expansion sleeve positioning assembly; 31. cylinder; 32. connecting rod; 33. expansion sleeve; 331. base; 332. elastic ring sleeve; 333. deformation notch; 334. connecting hole two; 34. cone head; 35. connecting bolt one; 4. vertical clamp; 5. OK clamp; 51. pressure block; 52. push block; 53. connecting bolt two; 800. eccentric block; 801. shaft hole; 802. process hole; 900. broach. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0026] See also Figure 1-12The utility model provides a technical solution: a positioning tool for keyway processing of an eccentric block, comprising a positioning mandrel 2 and a sleeve positioning assembly 3 provided on a positioning plate 1, the positioning plate 1 is provided with a mounting hole 101, the mounting hole 101 is a step hole structure, a threaded hole 103 is provided on the mounting hole 101, and a yielding keyway 102 is provided on the circumferential inner wall of the mounting hole 101 in the vertical direction; a plurality of vertical clamps 4 are fixedly provided on the positioning plate 1;

[0027] The positioning mandrel 2 is fixedly arranged in the mounting hole 101, and a guide keyway 21 is provided on the circumferential outer wall of the positioning mandrel 2, and the guide keyway 21 is arranged opposite to the yield keyway 102; a shaft shoulder 22 is provided at the bottom end of the positioning mandrel 2, and a connecting hole 23 is provided on the shaft shoulder 22 at a position corresponding to the threaded hole 103, and the positioning mandrel 2 is fixedly connected to the step surface of the mounting hole 101 by a fixing bolt penetrating the threaded hole 103 and the connecting hole 23;

[0028] The positioning plate 1 is provided with a plurality of second mounting holes 104 at the periphery of the first mounting hole 101; the second mounting hole 104 is a stepped hole structure, and a threaded hole 3 is provided on the stepped surface of the second mounting hole 104; the expansion sleeve positioning assembly 3 includes a cylinder 31 fixed to the bottom surface of the positioning plate 1, and a connecting rod 32 is fixedly provided at the telescopic end of the cylinder 31, and a cone head 34 is fixedly connected to the top of the connecting rod 32 by a connecting bolt 35; the expansion sleeve positioning assembly 3 also includes an expansion sleeve 33, which is fixedly arranged in the second mounting hole 104, and the top of the expansion sleeve 33 extends to the top of the second mounting hole 104, the connecting rod 32 is nested in the expansion sleeve 33, and the cone head 34 passes through the expansion sleeve 33;

[0029] The expansion sleeve 33 includes a base 331 fixed in the mounting hole 101, an elastic ring sleeve 332 is provided at the top of the base 331, and deformation notches 333 are provided at equal intervals at the top of the elastic ring sleeve 332 along its circumferential direction; connecting holes 2 334 are provided on the base 331 at positions corresponding to the threaded holes 3, and the base 331 is fixedly connected to the step surface of the mounting hole 101 by fixing bolts penetrating the connecting holes 2 334 and the threaded holes 3; the connecting rod 32 is nested in the expansion sleeve 33, and the cone head 34 penetrates the expansion sleeve 33; the number of the expansion sleeve positioning components 3 is not less than two.

[0030] Working principle:

[0031] The axial hole 801 of the eccentric block 800 is nested on the positioning core shaft 2, and the expansion sleeve 33 is nested in the process hole 802 of the eccentric block 800. The telescopic end of the cylinder 31 contracts to pull the cone head 34 downward, and the cone head 34 supports the elastic ring sleeve 332 to expand and deform outward. After the diameter of the elastic ring sleeve 332 increases, the process hole 802 of the eccentric block 800 is positioned and tightened, and then the upper surface of the positioning plate 1 is pressed by the vertical clamp 4; the broaching tool 900 on the broaching machine penetrates the yield keyway 102 and the guide keyway 21 to process the keyway of the eccentric block 800.

[0032] Furthermore, a positioning notch is provided on the circumferential side wall of the shoulder 22, and a threaded hole 105 is provided on the step surface of the mounting hole 101 at the center of the corresponding positioning notch. An OK clamp 5 is provided in the positioning notch of the shoulder 22, and the OK clamp 5 includes a pressure block 51 and push blocks 52 slidably provided on both sides thereof. A connecting bolt 53 is provided on the top of the pressure block 51, and the connecting bolt 53 is threadedly connected to the threaded hole 105, and the push blocks 52 on both sides are respectively tightly fitted with the two end surfaces of the positioning notch of the shoulder 22; when assembling the positioning mandrel 2, after the positioning spindle 2 is nested in the mounting hole 101, the pressure block 51 is pushed outward by tightening the connecting bolt 2 53 to push the push blocks 52 on both sides of the pusher, and the push blocks 52 are tightly fitted with the two end surfaces of the positioning notch of the shoulder 22, thereby realizing the positioning of the positioning spindle 2, and then the positioning spindle 2 is fixedly connected to the positioning plate 1 by the fixing bolts, ensuring that the guide keyway 21 on the positioning spindle 2 is placed vertically, and the guide keyway 21 can be aligned with the giving way keyway 102 in a horizontal position, thereby improving the installation accuracy of the positioning spindle 2.

[0033] The positioning tool for machining the keyway of the eccentric block disclosed in the present embodiment positions the shaft hole 801 of the eccentric block 800 through the positioning mandrel 2, positions and tightens the process hole 802 of the eccentric block 800 through the expansion sleeve 33, and fixes the eccentric block 800 with the vertical clamp 4, so that the eccentric block 800 can be quickly positioned and fixed with high precision; the cutting movement of the broach 900 is guided and made way by the guide keyway 21 provided on the positioning mandrel 2 and the yield keyway 102 provided on the positioning plate 1, so as to ensure that the broach 900 accurately machines the keyway of the eccentric block 800, and the installation accuracy of the positioning mandrel 2 is improved by the OK clamp 5, so as to further improve the machining accuracy of the keyway of the eccentric block 800. The positioning tool has a simple structure, is easy to use, has high positioning accuracy and positioning efficiency, ensures the symmetry of the keyway with respect to the axis of the eccentric block 800, avoids angular deviation of the keyway of the eccentric block 800, and ensures that the exciting force and amplitude direction of the exciter are more accurate.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning tool for machining an eccentric block keyway, comprising a positioning mandrel and an expansion sleeve positioning assembly provided on a positioning plate, characterized in that: The positioning plate is provided with a mounting hole one, a yield key groove is provided on the circumferential inner wall of the mounting hole one in the vertical direction, and a plurality of mounting holes two are provided on the positioning plate at the periphery of the mounting hole one; the positioning mandrel is fixedly arranged in the mounting hole one, a guide key groove is provided on the circumferential outer wall of the positioning mandrel, and the guide key groove is arranged opposite to the yield key groove; the expansion sleeve positioning assembly includes a cylinder fixed on the bottom surface of the positioning plate, a connecting rod is fixedly arranged at the telescopic end of the cylinder, and a cone head is provided on the top of the connecting rod, the expansion sleeve positioning assembly also includes an expansion sleeve, the expansion sleeve is fixedly arranged in the mounting hole two, and the top end of the expansion sleeve extends to the top of the mounting hole two, the connecting rod is nested in the expansion sleeve, and the cone head passes through the expansion sleeve; the number of the expansion sleeve positioning assemblies is not less than two.

2. The positioning tool for machining the keyway of an eccentric block according to claim 1, characterized in that: The expansion sleeve comprises a base fixed in the first mounting hole, an elastic ring sleeve is arranged on the top of the base, and deformation notches are arranged at equal intervals on the top of the elastic ring sleeve along the circumferential direction thereof.

3. The positioning tool for machining the keyway of an eccentric block according to claim 2, characterized in that: The mounting hole 2 is a stepped hole structure, and a threaded hole 3 is provided on the stepped surface of the mounting hole 2; a connecting hole 2 is provided on the base at a position corresponding to the threaded hole 3, and the base is fixedly connected to the stepped surface of the mounting hole 2 by a fixing bolt passing through the connecting hole 2 and the threaded hole 3.

4. The positioning tool for machining the keyway of an eccentric block according to claim 1, characterized in that: The cone head is detachably fixedly connected to the connecting rod via a connecting bolt.

5. The positioning tool for machining the keyway of an eccentric block according to claim 1, characterized in that: The mounting hole 1 is a stepped hole structure, and a threaded hole 1 is provided on the mounting hole 1; the bottom end of the positioning core shaft is provided with a shaft shoulder, and a connecting hole 1 is provided on the shaft shoulder at a position corresponding to the threaded hole 1, and the positioning core shaft is fixedly connected to the stepped surface of the mounting hole 1 by a fixing bolt passing through the threaded hole 1 and the connecting hole 1.

6. The positioning tool for machining the keyway of an eccentric block according to claim 5, characterized in that: A positioning notch is provided on the circumferential side wall of the shoulder, and a threaded hole 2 is provided on the step surface of the mounting hole 1 at the center of the corresponding positioning notch. An OK clamp is provided in the positioning notch of the shoulder, and the OK clamp includes a pressing block and push blocks slidably provided on both sides of the pressing block. A connecting bolt 2 is provided on the top of the pressing block, and the connecting bolt 2 is threadedly connected to the threaded hole 2, and the push blocks on both sides are tightly fitted with the two end surfaces of the shoulder positioning notch respectively.

7. The positioning tool for machining the keyway of an eccentric block according to claim 1, characterized in that: A plurality of vertical clamps are fixedly arranged on the positioning plate.

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