A double-side floating probe mechanism for ball screw dynamic travel measuring instrument

Abstract

The utility model discloses a double-sided floating probe mechanism of a ball screw dynamic stroke measuring instrument, which relates to the technical field of ball screw dynamic stroke measuring instruments, and comprises a position compensation component, a probe mounting component, a first adjustment component, and a second adjustment component. The position compensation component is used for position compensation of the double-sided floating probe mechanism of the ball screw dynamic stroke measuring instrument in a first moving direction and a second moving direction. The probe mounting component is arranged on the upper side of the position compensation component. A group of oppositely arranged probes are respectively installed on the upper ends of the first adjustment component and the second adjustment component. The first adjustment component is used to realize position adjustment of the upper end probe along the first moving direction. The second adjustment component is used to realize position adjustment of the upper end probe along the first moving direction and / or the second moving direction. The device further improves the measuring accuracy of the measuring instrument.

Description

Technical Field

[0001] The utility model relates to the technical field of a ball screw dynamic stroke measuring instrument, in particular to a double-sided floating measuring head mechanism of a ball screw dynamic stroke measuring instrument. Background Art

[0002] A ball screw dynamic stroke measuring instrument inserts a probe into a thread groove to contact the thread surface, and drives the probe to move through the rotation of the screw to measure the dynamic stroke of the screw. This type of ball screw dynamic stroke measuring instrument has high performance requirements for the probe system.

[0003] At present, the instrument adopts a single-sided floating probe, and the probe can only fix one contact form for measurement, single contact or double-sided contact at the same time. If the measurement contact mode is changed, different probe mechanisms need to be replaced, which are difficult to adjust and time-consuming to convert. In addition, installation errors of different probe mechanisms are prone to cause measurement errors. Therefore, a floating probe mechanism and measurement method of a screw guide instrument with application number 202211604981.1 discloses a limit rod, a probe seat, a linear guide, a measuring rod, a probe, a positioning plate, and a compression spring. The probe and the positioning plate are installed on the measuring rod, the measuring rod is installed on the linear guide, and the linear guide is installed on the probe seat. A compression spring is provided between the measuring rod and the probe seat, and the limit rod is installed on the probe seat. The measuring rod is limited by the limit rod, so that the measuring instrument has the characteristics of optional measuring contact surface, automatic compensation of screw error, and reliable measurement contact. The mechanism is easy to install, the manufacturing and matching difficulty is low, and it can solve the defect that the measuring surface of the traditional probe of the screw guide instrument cannot be selected.

[0004] However, according to the contents of the above application documents, it will appear that the measuring instrument cannot avoid measurement errors caused by deformation of the probe due to force and change of the screw deflection during measurement, and when measuring long-distance screws, the straightness and flatness errors of the guide rails for installing the probe mechanism are extremely high. Therefore, a double-sided floating probe mechanism of a ball screw dynamic stroke measuring instrument is needed to solve the above problems. Utility Model Content

[0005] The utility model aims to address the existing technical defects and provide a double-sided floating probe mechanism for a ball screw dynamic stroke measuring instrument to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above-mentioned technical problems, the utility model provides the following technical solutions: a double-sided floating probe mechanism of a ball screw dynamic stroke measuring instrument, comprising a position compensation component, a probe mounting component, a first adjustment component, and a second adjustment component. The position compensation component is used for position compensation in a first moving direction and a second moving direction. The probe mounting component is arranged on the upper side of the position compensation component. A group of oppositely arranged probes are respectively installed on the upper ends of the first adjustment component and the second adjustment component. The first adjustment component is used to realize the position adjustment of its upper end probe along the first moving direction, and the second adjustment component is used to realize the position adjustment of its upper end probe along the first moving direction and / or the second moving direction. A group of oppositely arranged probes are set as metal spherical surfaces, which are in single-sided contact with the tooth surface of the screw. The radial relative position of the oppositely arranged probes and the threaded surface of the screw remains unchanged, thereby avoiding the influence of the bending deformation of the screw on the measurement.

[0007] The utility model further describes a double-sided floating probe mechanism of a ball screw dynamic stroke measuring instrument, comprising a group of first adjusting rods, wherein the group of first adjusting rods is used to realize the distance adjustment of the two probes along the first moving direction, and the first adjusting rods realize the adjustment of the probes along the first moving direction, which belongs to fine adjustment.

[0008] The utility model further describes that the probe mounting assembly includes a mounting plate, a mounting rail, and a mounting fixture. The mounting plate is fixedly connected to the upper surface of the position compensation assembly, the mounting rail is connected to the upper surface of the mounting plate, and the mounting fixture is used to fix or release the second adjustment assembly sliding in the second moving direction.

[0009] The utility model further describes that the first adjustment component includes a first adjustment probe seat, a first slide, a first guide rail, and a first fixing member. The first slide is fixed to the bottom of the first adjustment probe seat, the first guide rail is slidably connected to the bottom of the first slide, and the first fixing member is arranged on the first slide.

[0010] The utility model further describes that the second adjustment assembly includes a second adjustment probe seat, a second slide, a second guide rail, and a second fixing member. The second slide is fixedly connected to the bottom of the second adjustment probe seat, the second guide rail is slidably connected to the bottom of the second slide along the first moving direction, and the second fixing member is arranged on the second slide.

[0011] The utility model further illustrates that the bottom of the second guide rail is slidably connected to the installation guide rail, and the installation fixing piece is arranged on the second guide rail through.

[0012] The utility model is further described, and further comprises an upper slide and a lower slide, wherein a slide guide groove is provided at the bottom of the upper slide, and a lower slide is slidably connected to the slide guide groove, and the position compensation component is an upper slide, and the position compensation component compensates for the position deviation generated by the measuring head to avoid measurement errors caused by force deformation of the side head mechanism, motion control deviation, etc.

[0013] The utility model further describes a double-sided floating probe mechanism of a ball screw dynamic stroke measuring instrument, which also includes a second adjusting rod. A spiral line is provided on the side of the second adjusting rod close to the second adjusting component. A nut block is rotatably connected to the surface of the spiral line. The nut block is fixed to the second adjusting component. The second adjusting rod realizes active adjustment of the probe along the second moving direction, which belongs to coarse adjustment.

[0014] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0015] The probes are set opposite to each other, so that the radial relative position between the probe and the screw thread surface remains unchanged during the measurement process, avoiding the influence of the screw bending deformation on the measurement;

[0016] The position compensation component is used to compensate for the position deviation of the probe, avoiding measurement errors caused by deformation of the probe and motion control deviation. At the same time, for the dynamic stroke measurement of long-distance lead screws, the requirements for the straightness and flatness of the probe mounting rail are reduced;

[0017] The first adjusting rod and the second adjusting rod are used to adjust the distance between the two measuring heads through coarse adjustment and fine adjustment, so as to achieve precise contact between the two measuring heads and the threaded surface of the lead screw;

[0018] A first adjustment component and a second adjustment component are used. The first adjustment component is used to adjust the position of the upper probe along the first moving direction, and the second adjustment component is used to adjust the position of the upper probe along the first moving direction and / or the second moving direction, thereby achieving multiple selectivity of adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall structure of a double-sided floating probe mechanism of a ball screw dynamic stroke measuring instrument of the utility model;

[0021] Figure 2 This is a measurement schematic diagram of a double-side floating probe mechanism of a ball screw dynamic stroke measuring instrument of the utility model;

[0022] In the figure: 1. position compensation assembly; 11. upper slide; 12. lower slide; 2. probe mounting assembly; 20. mounting plate; 21. mounting guide rail; 22. mounting fixture; 3. first adjustment assembly; 30. first adjustment probe seat; 31. first slide; 32. first guide rail; 33. first fixture; 4. probe; 5. second adjustment assembly; 50. second adjustment probe seat; 51. second slide; 52. second guide rail; 53. second fixture; 6. first adjustment rod; 7. second adjustment rod; 8. screw. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0024] See also Figure 1-2 The utility model provides a technical solution: a double-sided floating probe mechanism of a ball screw dynamic stroke measuring instrument to improve the measurement accuracy of the screw 8, including a position compensation component 1, a probe installation component 2, a first adjustment component 3, a group of probes 4 arranged oppositely, and a second adjustment component 5;

[0025] Specifically, the position compensation component 1 is used to compensate for the position deviation generated by the probe 4, eliminate measurement errors, and improve measurement accuracy. The probe mounting component 2 is used to slide the first adjustment component 3 and the second adjustment component 5 onto the upper surface of the position compensation component 1 to form a simple integrated structure. A group of oppositely arranged probes 4 are respectively installed on the upper ends of the first adjustment component 3 and the second adjustment component 5. The first adjustment component 3 and the second adjustment component 5 respectively realize unidirectional and bidirectional position adjustment of the corresponding probe 4 to adapt to the measurement of screws 8 of different models and sizes.

[0026] Among them, the position compensation component 1 is an upper slide 11, and a lower slide 12 is slidably connected to the bottom of the upper slide 11. A first slide guide groove adapted to the size of the lower slide 12 is provided at the bottom of the upper slide 11. The sliding direction formed by the first slide guide groove and the lower slide 12 is set as a first moving direction, that is, the first moving direction is perpendicular to the length direction of the lead screw 8, and the moving direction parallel to the length direction of the lead screw 8 is set as the second moving direction. A second slide guide groove is also provided at the bottom of the lower slide 12, and a fixed frame is slidably connected to the interior of the second slide guide groove along the second moving direction. The fixed frame is used to connect the stroke measuring instrument, wherein the fixed frame is a conventional setting and is not shown in the figure. The upper slide 11, the lower slide 12 and the first slide guide groove and the second slide guide groove are set to compensate for the position of the double-sided floating probe mechanism of the ball screw dynamic stroke measuring instrument in the measuring state in the first moving direction and the second moving direction.

[0027] refer to Figure 1The probe mounting assembly 2 includes a mounting plate 20 fixedly connected to the upper surface of the position compensation assembly 1, and a mounting guide rail 21 is fixedly connected or integrally provided on one side of the upper surface of the mounting plate 20. A scale line is provided on one side surface of the mounting guide rail 21 to facilitate observation or control of the adjustment distance of the second adjustment assembly 5 in the second moving direction. The probe mounting assembly 2 also includes a mounting fixture 22 for fixing or releasing the second adjustment assembly 5 sliding in the second moving direction.

[0028] The first adjustment component 3 moves along the first moving direction, and includes a first adjustment probe seat 30 arranged in an L shape, a first slide 31 fixed to the bottom of the first adjustment probe seat 30, and a first guide rail 32 slidably connected to the bottom of the first slide 31. The bottom of the first guide rail 32 is fixed to the other side of the upper surface of the mounting plate 20. The first adjustment component 3 also includes a first fixing member 33. The first fixing member 33 is used to fix or release the first slide 31 slidably connected to the first guide rail 32. When the first fixing member 33 is loosened or released, the first slide 31 can drive the first adjustment probe seat 30 to slide on the first guide rail 32 along the first moving direction. The upper surface of the first guide rail 32 and the first slide 31 in sliding contact is also provided with scale lines for observing or controlling the adjustment distance of the first adjustment probe seat 30. After determining the adjustment position of the first adjustment probe seat 30, the first fixing member 33 is locked or fixed to simply and conveniently complete the adjustment and fixing process of the first adjustment component 3.

[0029] Similarly, the second adjustment component 5 can move along the first moving direction and the second moving direction, and includes a second adjustment probe seat 50 arranged in an L shape, the bottom of the second adjustment probe seat 50 is fixedly connected to a second slide 51, the bottom of the second slide 51 is slidably connected to a second guide rail 52 along the first moving direction, and the upper surface of the second guide rail 52 in sliding contact with the second slide 51 is provided with scale lines, so as to facilitate observation or control of the adjustment distance of the second adjustment component 5 in the first moving direction;

[0030] Among them, the bottom of the second guide rail 52 is slidably connected to the above-mentioned mounting guide rail 21, and the mounting fixing member 22 is arranged on the second guide rail 52 to complete the fixing or releasing the fixing between the second guide rail 52 and the mounting guide rail 21. The second adjustment component 5 also includes a second fixing member 53, and the second fixing member 53 is arranged on the second slide 51 to complete the fixing or releasing the fixing between the second guide rail 52 and the second slide 51.

[0031] It should be noted that a set of probes 4 disposed opposite to each other are configured as metal spherical surfaces, which are in single-side contact with the tooth surface of the lead screw 8 .

[0032] The double-side floating probe mechanism of a ball screw dynamic stroke measuring instrument further includes a set of first adjusting rods 6 and second adjusting rods 7 .

[0033] The second adjusting rod 7 is connected to a bearing with a support frame, which is fixed to the upper surface of the mounting plate 20 and plays a supporting and connecting role for the second adjusting rod 7. A spiral line is provided on the side of the second adjusting rod 7 close to the second adjusting assembly 5, and a nut block is rotatably connected to the surface of the spiral line, and the nut block is fixed to the second guide rail 52 close to it. When the mounting fixture 22 releases the fixation between the second guide rail 52 and the mounting guide rail 21, the active adjustment of the probe 4 along the second moving direction is achieved by rotating the second adjusting rod 7, which belongs to coarse adjustment. In addition, an anti-slip pattern is provided on the side of the second adjusting rod 7 away from the second adjusting assembly 5 to increase the friction when in contact with the second adjusting rod 7 and achieve effective rotation.

[0034] A set of first adjustment rods 6 are respectively fixedly connected to the non-measuring ends of the probe 4, and the position of the probe 4 is finely adjusted along the first moving direction by setting the bolts on the top of the first adjustment rods 6. The adjustment of the probe 4 along the first moving direction by the first adjustment rods 6 belongs to fine adjustment.

[0035] The distance between the two probes 4 is adjusted by means of coarse adjustment and fine adjustment, so that the two probes 4 are in precise contact with the threaded surface of the lead screw 8 .

[0036] In this embodiment, when the double-sided floating probe mechanism is used for measurement, first, the corresponding probe 4 is selected according to the specifications of the lead screw 8; then, Figure 2 , adjust the first adjusting probe seat 30 until the metal spherical surface of the probe 4 at its upper end is in single-sided contact with the tooth surface of the screw 8 and is fixed, adjust the second adjusting probe seat 50 until the metal spherical surface of the probe 4 at its upper end is in single-sided contact with the tooth surface of the screw 8 and is fixed, and the oppositely arranged probes 4 are axially separated by half a lead; then, during measurement, the screw 8 rotates to drive the probe 4 to move axially. During this process, the position compensation component 1 compensates for the position deviation of the probe 4 to avoid measurement errors caused by force deformation of the side head mechanism, motion control deviation, etc., while the radial relative position of the threaded surface of the oppositely arranged probe 4 and the screw 8 remains unchanged, avoiding the influence of the bending deformation of the screw 8 on the measurement. Finally, the measurement is completed, and the oppositely arranged probe 4 is adjusted to disengage from the screw 8.

[0037] The above describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A double-sided floating probe mechanism for a ball screw dynamic travel measuring instrument, characterized in that: include: A position compensation component (1), the position compensation component (1) being used for position compensation of a double-sided floating probe mechanism of a ball screw dynamic stroke measuring instrument in a first moving direction and a second moving direction; A probe mounting assembly (2) arranged on the upper side of the position compensation assembly (1); A first adjustment component (3) and a second adjustment component (5), wherein a group of measuring heads (4) arranged opposite to each other are respectively mounted on the upper ends of the first adjustment component (3) and the second adjustment component (5); The first adjustment component (3) is used to adjust the position of the upper probe (4) thereof along a first moving direction, and the second adjustment component (5) is used to adjust the position of the upper probe (4) thereof along the first moving direction and / or the second moving direction.

2. A double-sided floating probe mechanism for a ball screw dynamic travel measuring instrument according to claim 1, characterized in that: It comprises a group of first adjustment rods (6), wherein the group of first adjustment rods (6) is used to adjust the distance between the two measuring heads (4) along a first moving direction.

3. The double-sided floating probe mechanism of a ball screw dynamic travel measuring instrument according to claim 1, characterized in that: The probe mounting assembly (2) comprises: A mounting plate (20), the mounting plate (20) being fixedly connected to an upper surface of the position compensation component (1); A mounting rail (21), wherein the mounting rail (21) is connected to an upper surface of the mounting plate (20); The fixing member (22) is installed to fix or release the second adjustment component (5) sliding in the second moving direction.

4. The double-sided floating probe mechanism of a ball screw dynamic travel measuring instrument according to claim 1, characterized in that: The first adjustment component (3) comprises: A first adjusting probe seat (30); A first slide (31), the first slide (31) being fixed to the bottom of the first adjusting probe seat (30); A first guide rail (32), the first guide rail (32) being slidably connected to the bottom of the first slide platform (31); A first fixing member (33), wherein the first fixing member (33) is disposed through the first slide platform (31).

5. The double-sided floating probe mechanism of the ball screw dynamic stroke measuring instrument according to claim 3, characterized in that: The second regulating component (5) comprises: A second adjusting probe seat (50); A second slide (51), the second slide (51) being fixedly connected to the bottom of the second adjustment probe base (50); A second guide rail (52), the second guide rail (52) being slidably connected to the bottom of the second slide platform (51) along a first moving direction; A second fixing member (53), wherein the second fixing member (53) is disposed through the second slide platform (51).

6. The double-sided floating probe mechanism of the ball screw dynamic travel measuring instrument according to claim 5, characterized in that: The bottom of the second guide rail (52) is slidably connected to the mounting guide rail (21), and the mounting fixture (22) is disposed through the second guide rail (52).

7. The double-sided floating probe mechanism of a ball screw dynamic travel measuring instrument according to claim 1, characterized in that: Also includes: An upper slide (11) and a lower slide (12), wherein the upper slide (11) and the lower slide (12) are slidably connected, and the upper slide (11) and the lower slide (12) move relative to each other in a first moving direction and a second moving direction, and the position compensation component (1) is the upper slide (11).

8. The double-side floating probe mechanism of a ball screw dynamic travel measuring instrument according to claim 1, characterized in that: It also comprises a second adjusting rod (7), wherein a spiral line is provided on a side of the second adjusting rod (7) close to the second adjusting component (5), a nut block is rotatably connected to the surface of the spiral line, and the nut block is fixed to the second adjusting component (5).

9. The double-side floating probe mechanism of the ball screw dynamic travel measuring instrument according to claim 8, characterized in that: The side of the second adjustment rod (7) away from the second adjustment assembly (5) is provided with anti-slip grooves.

10. The double-side floating probe mechanism of a ball screw dynamic travel measuring instrument according to claim 1, characterized in that: A group of probes (4) arranged opposite to each other are configured as metal spherical surfaces.

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