Chuck

Abstract

The utility model provides a chuck which comprises a first chuck mechanism, a second chuck mechanism, a thread adapter and a sliding block, the first chuck mechanism is detachably connected to a supporting mechanism, the second chuck mechanism is arranged above the first chuck mechanism, and the thread adapter is arranged above the second chuck mechanism and used for installing a measuring instrument. The sliding block is arranged between the second chuck mechanism and the first chuck mechanism and used for limiting rotation and movement of the thread adapter in the axial direction. According to the utility model, a precision measuring instrument is fixed on a tripod, a magnetic chuck and other manufacturing mechanisms, and the measuring instrument is compatible with a plurality of types of measuring instruments such as a laser tracker, a measuring arm, a theodolite and the like. Meanwhile, a sliding block is arranged between the second chuck mechanism and the first chuck mechanism, so that rotation and movement of the thread adapter in the axial direction can be limited. In addition, through cooperation of a cup head bolt and a threaded hole and cooperation of an elastic pin and a third pin hole, quick disassembly and replacement of the second chuck mechanism and the first chuck mechanism can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical technical field, in particular to a chuck. BACKGROUND

[0002] At present, the mainstream precision measuring instrument needs to be fixed on a special tripod or a special magnetic chuck when in use. However, there is no chuck that can be quickly disassembled and replaced at present, and the chuck of part of the measuring instrument is not compatible with other brands of measuring instruments. Among them, the precision measuring instrument can be a measuring instrument with a preset level of measurement accuracy, such as a measuring instrument with micron level or nanometer level. SUMMARY

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a chuck for solving the problem of lack of quick-release chuck in the prior art.

[0004] To achieve the above-mentioned purpose and other related purposes, the utility model provides a chuck, which comprises:

[0005] A first chuck mechanism is detachably connected to the supporting mechanism;

[0006] A second chuck mechanism is arranged above the first chuck mechanism;

[0007] A threaded adapter is arranged above the second chuck mechanism and is used for installing a measuring instrument;

[0008] A sliding block is arranged between the second chuck mechanism and the first chuck mechanism and is used for limiting the rotation and movement of the threaded adapter in the axial direction.

[0009] Optionally, the chuck further comprises a first wrench for detachably connecting the first chuck mechanism to the supporting mechanism;

[0010] The first chuck mechanism is symmetrically provided with a first pin hole, and the first wrench is connected to the first chuck mechanism by inserting a cylindrical pin into the first pin hole;

[0011] Among them, the cylindrical pin and the first pin hole are in interference fit, and the first wrench and the cylindrical pin are in clearance fit.

[0012] Optionally, the inner wall of the lower end of the first chuck mechanism is provided with an internal thread;

[0013] When the force direction of the first wrench is clockwise, the first wrench rotates clockwise around the cylindrical pin, and the first wrench locks the internal thread to detachably connect the first chuck mechanism to the supporting mechanism;

[0014] When the force direction of the first wrench is counterclockwise, the first wrench rotates counterclockwise around the cylindrical pin, the first wrench loosens the inner thread, and the first chuck mechanism is loosened from the support mechanism.

[0015] Optionally, the tail end of the first wrench is provided with a wave bead screw, and the top of the first chuck mechanism is provided with a second pin hole;

[0016] When the wave bead screw is displaced to the second pin hole, the wave bead pressure in the wave bead screw is reduced, the wave bead is lifted and clamped into the second pin hole, and the first wrench is fixed to the side wall of the first chuck mechanism.

[0017] Optionally, the top of the first chuck mechanism and the bottom of the second chuck mechanism are correspondingly provided with a threaded hole and a third pin hole, a half-round head bolt is inserted into the threaded hole, and an elastic pin is inserted into the third pin hole. Through cooperation of the half-round head bolt and the threaded hole and cooperation of the elastic pin and the third pin hole, the second chuck mechanism is fixed in position above the first chuck mechanism.

[0018] Optionally, the first chuck mechanism is further provided with a first through hole, a flat pad is arranged on the bottom step surface of the first through hole, a spring is arranged outside the flat pad, the slider is arranged outside the spring, a second through hole is arranged on the slider, and a half-threaded internal hexagonal bolt is attached to the slider through the second through hole, thereby limiting rotation and movement of the threaded adapter in the axial direction.

[0019] Optionally, the side wall of the first chuck mechanism is further provided with a first recess, a pad is arranged at the first recess, a circular arc recess is arranged on the end surface of the pad away from the first chuck mechanism, and a second wrench is further arranged on the pad, and the second wrench performs rotational movement at the circular arc recess.

[0020] The second wrench is further provided with a wrench pin hole, a second recess is arranged at the wrench pin hole, a half-threaded internal hexagonal bolt is arranged in the second recess, the half-threaded internal hexagonal bolt is partially screwed into a hammer nut screw, and the hammer nut screw is mounted to the second wrench.

[0021] Optionally, an external thread is arranged on the upper end of the threaded adapter, and the measuring instrument is mounted on the threaded adapter by cooperating with the external thread.

[0022] The side wall of the threaded adapter is further provided with a threaded adapter through hole for applying a torque, and the threaded adapter and the measuring instrument are locked after a preset torque is applied.

[0023] Optionally, a circumferential trapezoidal boss is arranged inside the threaded adapter.

[0024] When the second chuck mechanism comprises a trapezoidal boss, the diameter of the circumferential trapezoidal boss on the threaded adapter is greater than the diameter of the trapezoidal boss on the second chuck mechanism.

[0025] Optionally, the support mechanism comprises a tripod or a magnetic chuck; and / or, the surveying instrument comprises a laser tracker, a total station or a theodolite.

[0026] As described above, the utility model provides a chuck, has the following beneficial effects: can through first chuck mechanism detachable connection in tripod, magnetic chuck etc. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is the front view of chuck;

[0028] Figure 2 It is Figure 1 It is the B-B direction section view of chuck;

[0029] Figure 3 It is the top view state diagram of chuck;

[0030] Figure 4 It is the perspective view of chuck;

[0031] Figure 5 It is the explosion view of chuck. DETAILED DESCRIPTION

[0032] The implementation mode of the utility model will be explained below through specific concrete examples, and other advantages and effects of the utility model can be easily understood by the person skilled in the art from the content disclosed in the specification. The utility model can also be implemented or applied through other different specific implementation modes, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0033] It needs to be explained that the diagram provided in the embodiment only illustrates the basic concept of the utility model in a schematic way, and only the components related to the utility model are shown in the diagram, not drawn according to the number, shape and size of the components in actual implementation. The shape, number and proportion of each component in actual implementation can be changed arbitrarily, and the component layout type can also be more complex.

[0034] Please refer to Figures 1 to 5 The utility model provides a chuck, including:

[0035] The first chuck mechanism 1 is detachably connected to the supporting mechanism. As an example, the supporting mechanism in the utility model includes but is not limited to a tripod, a magnetic suction disc and the like.

[0036] The second chuck mechanism 2 is arranged above the first chuck mechanism 1.

[0037] The threaded adapter 3 is arranged above the second chuck mechanism 2 and is used for installing a measuring instrument. As an example, the measuring instrument in the utility model includes but is not limited to a measuring instrument with a preset level of measuring accuracy, such as a measuring instrument with a micron level or a nanometer level. Specifically, the measuring instrument in the utility model can be a laser tracker, a measuring arm, a theodolite and the like.

[0038] The sliding block 4 is arranged between the second chuck mechanism 2 and the first chuck mechanism 1 and is used for limiting the rotation and movement of the threaded adapter 3 in the axial direction.

[0039] In an exemplary embodiment, the chuck further includes: a first wrench 7, which is used for detachably connecting the first chuck mechanism 1 to the supporting mechanism; the first chuck mechanism 1 is symmetrically provided with a first pin hole 13A, and the first wrench 7 can be connected to the first chuck mechanism 1 by inserting a cylindrical pin 13 into the first pin hole 13A. The cylindrical pin 13 is in interference fit with the first pin hole 13A, and the first wrench 7 is in clearance fit with the cylindrical pin 13.

[0040] In an exemplary embodiment, the lower end inner wall of the first chuck mechanism 1 is provided with an internal thread 1A; when the force direction of the first wrench 7 is clockwise, the first wrench 7 performs clockwise rotary motion around the cylindrical pin 13, the first wrench 7 locks the internal thread 1A, and the first chuck mechanism 1 is detachably connected to the supporting mechanism; when the force direction of the first wrench 7 is counterclockwise, the first wrench 7 performs counterclockwise rotary motion around the cylindrical pin 13, the first wrench 7 releases the internal thread 1A, and the first chuck mechanism 1 is released from the supporting mechanism.

[0041] In an exemplary embodiment, the tail end of the first wrench 7 is provided with a wave bead screw 9, and the top of the first chuck mechanism 1 is provided with a second pin hole 9A; when the wave bead screw 9 is displaced to the position where the second pin hole 9A is located, the wave bead pressure in the wave bead screw 9 is reduced, at the same time, the wave bead is lifted and clamped into the second pin hole 9A, and the first wrench 7 is fixed to the side wall of the first chuck mechanism 1.

[0042] In an exemplary embodiment, the top of the first chuck mechanism 1 and the bottom of the second chuck mechanism 2 are correspondingly provided with a threaded hole 14A and a third pin hole 15A, a half-round head bolt 14 is inserted into the threaded hole 14A, and an elastic pin 15 is inserted into the third pin hole 15A; by cooperating the half-round head bolt 14 with the threaded hole 14A and cooperating the elastic pin 15 with the third pin hole 15A, the second chuck mechanism 2 is fixed in position above the first chuck mechanism 1. Using the elastic pin 15 for connection can withstand axial load and absorb vibration and impact, reduce the influence of environmental factors on measurement accuracy, and simplify assembly, easy to disassemble, improve assembly efficiency.

[0043] In an exemplary embodiment, the first chuck mechanism 1 is further provided with a first through hole 1B, the bottom step surface of the first through hole 1B is provided with a flat pad 12, the outer side of the flat pad 12 is provided with a spring 11, the outer side of the spring 11 is provided with a sliding block 4, the sliding block 4 is provided with a second through hole, and a half-threaded internal hexagonal bolt 10 is attached to the sliding block 4 through the second through hole, limiting the rotation and movement of the threaded adapter 3 in the axial direction.

[0044] In an exemplary embodiment, the side wall of the first chuck mechanism 1 is further provided with a first recess 6A, the first recess 6A is provided with a spacer 6, the end surface of the spacer 6 away from the first chuck mechanism 1 is provided with a circular arc groove, and the spacer 6 is further provided with a second wrench 5, the second wrench 5 rotates in the circular arc groove; the second wrench 5 is further provided with a wrench pin hole, the wrench pin hole is provided with a second recess, the second recess is provided with a half-threaded internal hexagonal bolt 10, the half-threaded internal hexagonal bolt 10 is partially screwed into a hammer nut screw 8, and the hammer nut screw 8 is installed on the second wrench 5.

[0045] In an exemplary embodiment, the upper end of the threaded adapter 3 is provided with an external thread 3C, and the measuring instrument is installed on the threaded adapter 3 by cooperating with the external thread 3C; the side wall of the threaded adapter 3 is further provided with a threaded adapter through hole 3A for applying torque, and after a predetermined torque is applied, the threaded adapter 3 and the measuring instrument are locked.

[0046] In an exemplary embodiment, the threaded adapter 3 is internally provided with a circumferential trapezoidal boss 3B; when the second chuck mechanism 2 includes a trapezoidal boss, the diameter of the circumferential trapezoidal boss 3B on the threaded adapter 3 is greater than the diameter of the trapezoidal boss on the second chuck mechanism 2.

[0047] According to the above description, in a specific example, asFigures 1 to 5 As shown, when the support mechanism is a tripod or a magnetic chuck, and the measuring instrument is a laser tracker, a measuring arm or a theodolite, then there is: the first chuck mechanism 1 is fixedly installed on the tripod or the magnetic chuck, and an internal thread 1A is arranged on the inner wall below the first chuck mechanism 1. A second chuck mechanism 2 is arranged above the first chuck mechanism 1, a sliding block 4 is arranged between the first chuck mechanism 1 and the second chuck mechanism 2, and a threaded adapter 3 is arranged above the second chuck mechanism 2. That is, from bottom to top in the vertical direction, there are the first chuck mechanism 1, the sliding block 4, the second chuck mechanism 2 and the threaded adapter 3.

[0048] Four threaded holes 14A and two third pin holes 15A are correspondingly arranged at the top of the first chuck mechanism 1 and the bottom of the second chuck mechanism 2, and the second chuck mechanism 2 is fixed and positioned by half-round head bolts 14 and elastic pins 15. The elastic pins 15 are used to connect the first chuck mechanism 1 and the second chuck mechanism 2, which can bear axial load and absorb vibration and impact, reduce the influence of environmental factors on the measurement accuracy, and simplify the assembly, easy to disassemble and improve the assembly efficiency.

[0049] The first chuck mechanism 1 is symmetrically provided with two first pin holes 13A, and a cylindrical pin 13 is arranged in each first pin hole 13A to connect the first wrench 7 and the first wrench 7A. The first wrench 7 is used to fix the quick-release chuck to the tripod or the magnetic chuck, and the first wrench 7 is twisted clockwise to lock the internal thread 1A below the first chuck mechanism 1, and the first wrench 7A is twisted counterclockwise to loosen the internal thread 1A of the first chuck mechanism 1, so that the quick-release chuck is removed from the tripod or the magnetic chuck. The cylindrical pin 13 is in interference fit with the first pin hole 13A, the first wrench 7 is in clearance fit with the cylindrical pin 13, and the first wrench 7 can rotate around the cylindrical pin 13. A wave bead screw 9 is arranged at the tail end of the first wrench 7. Two second pin holes 9A are symmetrically arranged at the top of the first chuck mechanism 1, and when the wave bead screw 9 is displaced to the second pin hole 9A by rotating the first wrench 7, the wave bead pressure in the wave bead screw 9 is reduced, the wave bead is lifted and clamped into the second pin hole 9A, and the first wrench 7 is fixed.

[0050] The first chuck mechanism 1 is provided with a first groove 6A, and a pad 6 is fixedly installed on the first chuck mechanism 1 through the first groove 6A. A second wrench 5 is arranged on the pad 6, and an arc groove is arranged on the pad 6 to cooperate with the second wrench 5, and the second wrench 5 can rotate in the arc groove. A wrench pin hole is arranged on the second wrench 5, a second groove is arranged on the second wrench 5 at the wrench pin hole, and a half-threaded internal hexagonal bolt 10 can be placed in the second groove. A part of the half-threaded internal hexagonal bolt 10 is screwed into a hammer nut screw 8, and the hammer nut screw 8 is installed on the second wrench 5.

[0051] The first chuck mechanism 1 is provided with a first through hole 1B for mounting the components of the locking precision measuring instrument. A flat pad 12 is arranged on the bottom step surface of the first through hole 1B, and a spring 11 is arranged outside the flat pad 12. A sliding block 4 is arranged outside the spring 11, and a second through hole is arranged on the sliding block 4. A half-threaded inner hexagonal bolt 10 is attached to the sliding block 4 through the second through hole on the sliding block 4. That is, along the horizontal linear direction of the half-threaded inner hexagonal bolt 10, the leftmost end is the hammer mother screw 8 and the second wrench 5, and the right end is the spacer 6, the first chuck mechanism 1, the flat pad 12, the spring 11 and the sliding block 4 in sequence.

[0052] The threaded adapter 3 is internally provided with a circumferential trapezoidal boss 3B similar to the sliding block 4 and the second chuck mechanism 2. The diameter of the trapezoidal boss of the threaded adapter 3 is slightly larger than that of the trapezoidal boss of the second chuck mechanism 2, which facilitates the installation of the threaded adapter 3 to the second chuck mechanism 2. An external thread 3C is arranged on the upper end of the threaded adapter 3, which can be matched and fixed with the measuring instrument. A threaded adapter through hole 3A is arranged on the cylindrical surface of the threaded adapter 3, and an M6 inner hexagonal wrench can be used to apply a torque through the threaded adapter through hole 3A to lock the measuring instrument and the threaded adapter 3.

[0053] According to the above description, the working process of the chuck in the utility model can be: when the precision measuring instrument with a threaded interface is used, the chuck is installed on a tripod or a magnetic chuck, and the first wrench 7 is turned clockwise to lock the chuck. The precision measuring instrument is installed on the threaded adapter 3 through the external thread, and the precision measuring instrument and the threaded adapter 3 are locked by applying a torque through the threaded adapter through hole 3A. The second wrench 5 is opened, the hammer mother screw 8 moves towards the spacer 6, and the half-threaded inner hexagonal bolt 10 moves backward, at this time the pressure of the spring 11 is reduced, the compression amount of the spring 11 is reduced, the sliding block 4 moves backward along the half-threaded inner hexagonal bolt 10, at this time the precision measuring instrument with the threaded adapter 3 is placed on the second chuck mechanism 2, and then the second wrench 5 is closed to drive the sliding block 4 to move forward. The front end of the sliding block 4 is attached to the circumferential trapezoidal boss 3B of the threaded adapter 3, so that the threaded adapter 3 moves forward. When the circumferential trapezoidal boss 3B at the other end of the threaded adapter 3 is attached to the circumferential trapezoidal boss 3B of the second chuck mechanism 2, the radial contact surface of the circumferential trapezoidal boss 3B limits the displacement freedom and rotation of the threaded adapter 3 in the plane, the axial contact surface limits the displacement of the threaded adapter 3 in the axial direction, and the pressure of the sliding block 4 acting on the threaded adapter 3 limits the rotation and movement of the threaded adapter 3 in the axial direction. When the precision measuring instrument with the circumferential trapezoidal boss 3B structure is used, the threaded adapter 3 is removed, the measuring instrument is directly placed on the second chuck mechanism 2, and then the second wrench 5 is closed, at this time the precision measuring instrument is locked.

[0054] In summary, the utility model provides a chuck, can be detachable connection through first chuck mechanism on tripod, magnetic chuck etc support mechanism, through second chuck mechanism set in the top of first chuck mechanism, and with for installing measuring instrument screw adapter set in the top of second chuck mechanism, can be compatible with laser tracker, measuring arm, theodolite etc multiple category measuring instrument. Meanwhile, through setting the slider between second chuck mechanism and first chuck mechanism, can limit screw adapter's rotation and movement in the axial direction. In addition, through the cooperation of semicircular head bolt and threaded hole and elastic pin and third pin hole, the quick disassembly and replacement of second chuck mechanism and first chuck mechanism can be realized.

[0055] It can be understood that the above embodiments only exemplarily illustrate the principles and effects of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should still be covered by the claims of the utility model.

[0056] The structure, proportion, size and the like shown in the drawings in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and are not used to limit the limiting conditions of the utility model that can be implemented, so they do not have technical substantive significance. Any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope covered by the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" and the like cited in the specification are only for the convenience of clear understanding of the description, and are not used to limit the scope of the utility model that can be implemented, the change or adjustment of relative relationship, without substantial change of technical content, is also regarded as the scope of the utility model that can be implemented.

[0057] It can be understood that although the terms first, second, third and the like are used to describe the pin holes and the like in the utility model, these pin holes should not be limited to these terms. These terms are only used to distinguish the pin holes from each other. For example, without departing from the scope of the embodiments of the utility model, the first pin hole can also be called the second pin hole, and similarly, the second pin hole can also be called the first pin hole.

Claims

1. A chuck, characterized in that, The utility model relates to a kind of chuck mechanism, including: First chuck mechanism (1), detachably connected on support mechanism; Second chuck mechanism (2), is arranged above the first chuck mechanism (1); Threaded adapter (3), is arranged above the second chuck mechanism (2), for installing measuring instrument; Slider (4), is arranged between the second chuck mechanism (2) and the first chuck mechanism (1), for limiting the rotation and movement of the threaded adapter (3) in axial direction.

2. The chuck of claim 1, wherein The chuck further includes: First wrench (7), for detachably connecting the first chuck mechanism (1) on support mechanism; The first chuck mechanism (1) is symmetrically provided with first pin hole (13A), and the first wrench (7) is connected with the first chuck mechanism (1) by inserting cylindrical pin (13) into the first pin hole (13A); Wherein, the cylindrical pin (13) and first pin hole (13A) are interference fit, and the first wrench (7) and the cylindrical pin (13) are clearance fit.

3. The chuck of claim 2 wherein, The inner wall of the lower end of the first chuck mechanism (1) is provided with internal thread (1A); When the force direction of the first wrench (7) is clockwise, the first wrench (7) rotates clockwise around the cylindrical pin (13), the first wrench (7) locks the internal thread (1A), and the first chuck mechanism (1) is detachably connected on support mechanism; When the force direction of the first wrench (7) is counterclockwise, the first wrench (7) rotates counterclockwise around the cylindrical pin (13), the first wrench (7) releases the internal thread (1A), and the first chuck mechanism (1) is released from the support mechanism.

4. Chuck according to claim 2 or 3, characterized in that The tail end of the first wrench (7) is provided with wave bead screw (9), and the top of the first chuck mechanism (1) is provided with second pin hole (9A); When the wave bead screw (9) is displaced to the second pin hole (9A), the wave bead pressure in the wave bead screw (9) is reduced, the wave bead is lifted and clamped into the second pin hole (9A), and the first wrench (7) is fixed on the side wall of the first chuck mechanism (1).

5. The chuck of claim 1 wherein, The top of the first chuck mechanism (1) and the bottom of the second chuck mechanism (2) are correspondingly provided with threaded hole (14A) and third pin hole (15A), the threaded hole (14A) is inserted with half-round head bolt (14), and the third pin hole (15A) is inserted with elastic pin (15), by cooperation of the half-round head bolt (14) and the threaded hole (14A) and cooperation of the elastic pin (15) and the third pin hole (15A), the second chuck mechanism (2) is limited and fixed above the first chuck mechanism (1).

6. The chuck of claim 1 wherein, The first chuck mechanism (1) is further provided with a first through hole (1B), a flat pad (12) is arranged on the bottom step surface of the first through hole (1B), a spring (11) is arranged outside the flat pad (12), the slider (4) is arranged outside the spring (11), a second through hole is arranged on the slider (4), and a half-threaded inner hexagonal bolt (10) is combined with the slider (4) through the second through hole, so as to limit the rotation and movement of the threaded adapter (3) in the axial direction.

7. The chuck as set forth in claim 1 or 6, wherein The side wall of the first chuck mechanism (1) is further provided with a first groove (6A), and a pad (6) is arranged at the first groove (6A). The pad (6) is provided with a circular arc groove away from the end surface of the first chuck mechanism (1), and a second wrench (5) is further arranged on the pad (6). The second wrench (5) rotates at the circular arc groove. The second wrench (5) is further provided with a wrench pin hole, and a second groove is arranged at the wrench pin hole. The second groove is provided with a half-threaded inner hexagonal bolt (10), the half-threaded inner hexagonal bolt (10) is partially screwed into a hammer nut screw (8), and the hammer nut screw (8) is installed on the second wrench (5).

8. The chuck of claim 1 wherein, An outer thread (3C) is arranged on the upper end of the threaded adapter (3), and a measuring instrument is installed on the threaded adapter (3) by cooperating with the outer thread (3C). The side wall of the threaded adapter (3) is further provided with a threaded adapter through hole (3A) for applying a torque. After a preset torque is applied, the threaded adapter (3) and the measuring instrument are locked.

9. The chuck as set forth in claim 1 or 8, wherein The threaded adapter (3) is internally provided with a circumferential trapezoidal boss (3B). When the second chuck mechanism (2) includes a trapezoidal boss, the diameter of the circumferential trapezoidal boss (3B) on the threaded adapter (3) is greater than the diameter of the trapezoidal boss on the second chuck mechanism (2).

10. The chuck of claim 1 wherein, The support mechanism includes a tripod or a magnetic suction disc. And / or, the measuring instrument includes a laser tracker, a measuring arm or a theodolite.

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