Active measuring instrument convenient for adjusting and measuring claw contraction tensor
By setting up a telescopic cylinder and sliding assembly on the outside of the active meter body, combined with the dovetail slide rail and positioning member, convenient adjustment of the measuring claw tensor is achieved, solving the problem of the active meter measuring claw accuracy drift on the bearing grinder, and improving machining accuracy and production efficiency.
Patent Information
- Application Number
- CN202422814000.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-11-19
AI Technical Summary
During the continuous batch automatic processing of the machine tool, the drift of the measurement claws leads to changes in the workpiece size, resulting in excessive workpiece scrapping, and the existing adjustment methods are difficult.
An active meter is designed to facilitate the adjustment of the tensor of the measuring claw. By setting up a telescopic cylinder and sliding assembly on the outside of the body, the dovetail slide rail and positioning member are used to adjust the tensor of the measuring claw, and combined with fine-tuning the dovetail seat and limit screw pin, the precise adjustment of the measuring claw is achieved.
It is achieved to facilitate adjustment of the tensor of the measuring claw without affecting the measurement accuracy, simplifying the adjustment process, and improving processing accuracy and production efficiency.
Smart Images
Figure CN223295419U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an active measuring instrument, in particular to an active measuring instrument which is convenient for adjusting the contraction amount of a measuring claw. Background Art
[0002] An active measuring instrument is an instrument that can detect the external dimensions of a workpiece. At the same time, the instrument can communicate with the machine tool. During the processing, it can send a flag signal to the machine tool based on real-time measurement data, allowing the machine tool to automatically jump to each working step, thereby controlling the machine tool to process the part to the preset size; that is, the final size of the workpiece is read and confirmed by the active measuring instrument, and the machine tool is controlled to stop feeding and complete the processing.
[0003] The active measuring instrument used on bearing grinding machines can drift in accuracy during continuous batch automatic machining, leading to workpieces being scrapped due to out-of-tolerance dimensions. The active measuring instrument consists of a main body and measuring jaws for measuring workpiece dimensions. The swinging motion of the measuring jaws is achieved by a telescopic cylinder pushing a swing arm, and the distance between the measuring jaws is adjusted by the connection structure between the measuring jaws and the swing arm. To calibrate and fine-tune the active measuring instrument, it must be adjusted after the measuring jaws enter the workpiece. Because the active measuring instrument is installed on the bearing grinding machine, the space for adjusting the connection structure between the measuring jaws and the swing arm is limited. This connection structure must be pre-locked before the measuring jaws enter the workpiece, otherwise the measuring jaws will shake due to instability. Adjusting the connection structure after the measuring jaws enter the workpiece requires a small, specially designed tool, making it very difficult to adjust the active measuring instrument. Utility Model Content
[0004] In view of the problems in the prior art, the utility model provides an active measuring instrument which is convenient for adjusting the retraction amount of the measuring claw, so as to facilitate the adjustment of the measuring claw.
[0005] An active measuring instrument that is convenient for adjusting the retraction and extension amount of measuring claws comprises a main body and two measuring claws, the two measuring claws being fixedly connected to two levers of the main body respectively, a cross arm being fixedly connected to the connection node between the measuring claws and the levers, one end of the cross arm being fixedly connected to the connection node, the other end of the cross arm extending to the outside of the main body, a telescopic cylinder being fixedly connected to a position on the outer wall of the main body corresponding to the free end of the cross arm, the telescopic rod of the telescopic cylinder facing the free end of the cross arm, the telescopic rod having a fixed telescopic stroke and being used to push the cross arm so that the cross arm drives the two measuring claws to realize retraction and extension action; the cylinder body of the telescopic cylinder is slidingly arranged on the main body along the axial direction of the telescopic rod, and the cylinder body is positioned on the main body by a positioning piece.
[0006] Further: the telescopic cylinder is connected to the main body through a sliding assembly, the sliding assembly includes a dovetail slide rail and a slide seat slidably arranged on the dovetail slide rail, the dovetail slide rail is fixedly connected to the main body, the cylinder body of the telescopic cylinder is fixedly connected to the slide seat, and the positioning piece is installed on the slide seat and positioned with the dovetail slide rail.
[0007] Further: a dovetail groove is provided on the slide seat at a position corresponding to the dovetail slide rail, and the dovetail groove is sleeved on the dovetail slide rail and slides with it; a through hole is provided on the slide seat at a position corresponding to the middle of the dovetail slide rail, and an adjustment gap is provided between the through hole and the middle of the dovetail groove, and the positioning part includes an adjusting bolt, which passes through the side wall on one side of the adjustment gap and then passes into the side wall on the other side of the adjustment gap, and the head of the adjusting bolt is stopped outside the side wall on one side of the adjustment gap, and the adjusting bolt is rotationally engaged with the side wall on this side, and the rod of the adjusting bolt is threadedly engaged with the side wall on the other side of the adjustment gap.
[0008] Furthermore, the axial direction of the adjusting bolt is arranged perpendicular to the adjusting gap.
[0009] Furthermore, the connecting node includes a pillar and a fine-tuning dovetail seat, the measuring claw is movably installed on the fine-tuning dovetail seat, and the cross arm, the fine-tuning dovetail seat and the lever are all fixedly connected to the pillar.
[0010] Furthermore, the end surface of the horizontal arm and the end surface of the lever are abutted and fixedly connected, and the end of the lever and the fine-tuning dovetail seat are fixedly sleeved on the middle part of the pillar.
[0011] Further: a limit screw is threadedly engaged at the end of the dovetail slide rail, the axial direction of the limit screw is the same as the axial direction of the telescopic rod, the free end of the limit screw is close to the cross arm or rests on the cross arm, and a locking nut is threadedly engaged at the middle part of the limit screw, and the locking nut is stopped on the end face of the dovetail slide rail.
[0012] Further, the fine-tuning dovetail seat includes a base, a fine-tuning screw rotatably set on the base, and a slider that cooperates with the fine-tuning screw thread, and the slider slides with the base along the axial direction of the fine-tuning screw; the base is connected to the pillar, and the measuring claw includes a measuring rod, one end of the measuring rod is fixedly connected to the slider, and a stator is fixedly connected to the other end of the measuring rod.
[0013] The beneficial effects of the present invention are as follows: a telescopic cylinder is slidingly arranged on the outside of the main body and is positioned by a positioning piece. When the telescopic stroke of the telescopic rod remains unchanged, the telescopic stroke of the telescopic rod acting on the cross arm is adjusted by adjusting the position of the telescopic cylinder on the main body, thereby adjusting the retraction amount of the measuring claw. Since the telescopic cylinder is located on the outside of the main body, adjustment and fine-tuning are facilitated. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic cross-sectional view of the utility model;
[0015] Figure 2 for Figure 1 Schematic diagram of the structure of the AA section. DETAILED DESCRIPTION
[0016] The present invention will be described in detail below with reference to the accompanying drawings. The embodiments of the present invention will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and are not to be construed as limiting the present invention. The terms such as left, center, right, top, and bottom in the embodiments of the present invention are merely relative concepts or are based on the normal use state of the product and should not be considered as restrictive.
[0017] An active measuring instrument that is easy to adjust the amount of tension of the measuring claw, such as Figure 1 As shown, it includes a main body 1 and two measuring claws 2, which are fixedly connected to the two levers 11 of the main body 1 respectively. The levers 11 are linked with the measuring claws 2 and are used to measure the size of the workpiece to be measured. A cross arm 5 is fixedly connected at the connection node between the measuring claws 2 and the lever 1. One end of the cross arm 5 is fixedly connected to the connection node, and the other end of the cross arm 5 extends to the outside of the main body 1. A telescopic cylinder 6 is fixedly connected to the position corresponding to the free end of the cross arm 5 on the outer wall of the main body 1. The telescopic rod 61 of the telescopic cylinder 6 faces the free end of the cross arm 5. The telescopic rod 61 has a fixed telescopic stroke and is used to push the cross arm 5 so that the cross arm 5 drives the two measuring claws 2 to realize the retraction and extension action; the cylinder body of the telescopic cylinder 6 is slidably arranged on the main body 1 along the axial direction of the telescopic rod 61, and the cylinder body is positioned on the main body 1 by a positioning member 73. The telescopic cylinder 6 is a telescopic pneumatic cylinder or a telescopic electric cylinder.
[0018] The telescopic cylinder 6 is connected to the body 1 through a sliding assembly. Figure 2As shown, the sliding assembly includes a dovetail slide rail 71 and a slide seat 72 slidably arranged on the dovetail slide rail 71. The dovetail slide rail 71 is fixedly connected to the body 1 by screws, and the cylinder body of the telescopic cylinder 6 is fixedly connected to the slide seat 72. The positioning member 73 is installed on the slide seat 72 and cooperates with the dovetail slide rail 71 to achieve positioning; a dovetail groove 723 is provided on the slide seat 72 at a position corresponding to the dovetail slide rail 71, and the dovetail groove 723 is sleeved on the dovetail slide rail 71 and slidably cooperates with it; a through hole 721 is provided on the slide seat 72 at a position corresponding to the middle of the dovetail slide rail 71, and an adjustment gap 722 is provided between the through hole 721 and the middle of the dovetail groove 723, so that the slide seat Two elastic claws are formed on the side walls on both sides of the through hole, adjustment gap 722 and dovetail groove 723 on 72, and the positioning member 73 includes an adjusting bolt. The adjusting bolt passes through the side wall on one side of the adjustment gap 722 and then penetrates into the side wall on the other side of the adjustment gap 722. The head of the adjusting bolt is stopped outside the side wall on one side of the adjustment gap 722, and the adjusting bolt rotates with the side wall on this side. The rod of the adjusting bolt is threadedly engaged with the side wall on the other side of the adjustment gap 722. The axial direction of the adjusting bolt is perpendicular to the adjustment gap 722. By rotating the adjusting bolt, the two elastic claws clamp the dovetail slide rail 71, thereby positioning the slide 72 on the dovetail slide rail 71.
[0019] In addition, the connection node includes a pillar 4 and a fine-tuning dovetail seat 3, the measuring claw 2 is movably mounted on the fine-tuning dovetail seat 3, the cross arm 5, the fine-tuning dovetail seat 3 and the lever 11 are all fixedly connected to the pillar 4; the end face of the cross arm 5 and the end face of the lever 11 are affixed and fixedly connected, the end of the lever 11 and the fine-tuning dovetail seat 3 are fixedly sleeved on the middle part of the pillar 4; the fine-tuning dovetail seat 3 includes a base 31, a fine-tuning screw 33 rotatably set on the base 31 and a slider 32 threadedly engaged with the fine-tuning screw 33, the slider 32 slidingly engaged with the base 31 along the axial direction of the fine-tuning screw 33; the bottom The seat 31 is connected to the pillar 4, and the measuring claw 2 includes a measuring rod 21, one end of the measuring rod 21 is fixedly connected to the slider 32, and the other end of the measuring rod 21 is fixedly connected to the stator 22; in order to limit the extreme position of the measuring claw 2, a limit screw 711 is threadedly engaged with the end of the dovetail slide rail 71, and the axial direction of the limit screw 711 is the same as the axial direction of the telescopic rod 61. The free end of the limit screw 711 is close to the cross arm 5 or rests on the cross arm 5, and a locking nut 712 is threadedly engaged with the middle part of the limit screw 711, and the locking nut 712 is stopped on the end face of the dovetail slide rail 71.
[0020] During operation, the telescopic rod 61 of the telescopic cylinder 6 extends, pushing the cross arm 5, causing the two measuring claws 2 to swing and approach each other. The measuring claws 2 are then moved so that the stylus 22 of the measuring claws 2 jumps into the workpiece. The telescopic rod 61 is then retracted, and the two measuring claws 2 are reset under the action of the lever 11, causing the stylus 22 to stop on the inner ring of the workpiece. The two stylus 22 are respectively located at the two ends of the same inner diameter of the workpiece, so that the inner diameter of the workpiece is calculated according to the swing angle of the lever 11.
[0021] When the amount of retraction of the measuring jaws 2 needs to be adjusted, the positions of the two measuring jaws 2 are adjusted first: the telescopic rod 61 of the telescopic cylinder 6 is extended, and then the adjusting bolt is rotated to loosen the two elastic clamping jaws of the slide 72 from the dovetail slide 71. The position of the slide 72 is adjusted so that the extended telescopic rod 61 is away from the cross arm 5. The locking nut 712 is rotated to allow the limit screw 711 to rotate freely. The limit screw 711 is then rotated to abut against the cross arm 5. The limit screw 711 is further rotated to push the cross arm 5, so that the cross arm 5 drives one of the measuring jaws 2 to swing closer to the other measuring jaw 2. After reaching the predetermined position, the locking nut 712 is tightened to complete the adjustment of the position of one measuring jaw 2. The position of the other measuring jaw 2 is adjusted in the same way. In this way, the positions of the two measuring jaws 2 are adjusted. Then adjust the retracted position of the two measuring claws 2: adjust the position of the slide 72 so that the extended telescopic rod 61 abuts the cross arm 5. Continue to adjust the position of the slide 72 to push the cross arm 5, so that the cross arm 5 drives the measuring claw 2 to swing closer to the other measuring claw 2. After reaching the predetermined position, re-tighten the adjustment bolt and lock the slide 72 to the dovetail rail 71, completing the adjustment of the retracted position of one measuring claw 2. Use the same method to adjust the retracted position of the other measuring claw 2. In this way, the retracted positions of both measuring claws 2 are adjusted. After the retracted and extended positions of the two measuring claws 2 are adjusted and determined, the retracted and extended strokes of the two measuring claws 2 are determined, and the adjustment of the retracted and extended distances of the measuring claws 2 is completed.
[0022] When the zero position of the measuring jaw 2 needs to be adjusted, the locking screw of the slider 32 on the fine-tuning dovetail seat 3 is loosened. Then, the two measuring jaws 2 are adjusted to the retracted state, and the two measuring jaws 2 are moved into the inner diameter of the workpiece. The fine-tuning screw 33 is adjusted so that the measuring jaw 2 moves up and down and abuts against the inner diameter of the workpiece. The fine-tuning screw 33 is further adjusted so that the measuring jaw 2 reaches the predetermined position, and the locking screw on the slider 32 is tightened. The position of the measuring jaw 2 is adjusted in the same way. The position of the other measuring jaw 2 is adjusted so that the measuring jaw 2 reaches the zero position, and the locking screw on the slider 32 is tightened. This completes the zero position adjustment of the measuring jaw 2.
[0023] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.
Claims
1. An active measuring instrument for facilitating adjustment of the amount of tension of a measuring jaw, comprising a body and two measuring jaws, wherein the two measuring jaws are fixedly connected to two levers of the body, and characterized in that: A cross arm is fixedly connected to the connection node between the measuring claw and the lever, one end of the cross arm is fixedly connected to the connection node, and the other end of the cross arm extends to the outside of the main body. A telescopic cylinder is fixedly connected to the position on the outer wall of the main body corresponding to the free end of the cross arm. The telescopic rod of the telescopic cylinder faces the free end of the cross arm. The telescopic rod has a fixed telescopic stroke and is used to push the cross arm and enable the cross arm to drive the two measuring claws to realize the retraction and extension action; the cylinder body of the telescopic cylinder is set on the main body for sliding along the axial direction of the telescopic rod, and the cylinder body is positioned on the main body by a positioning piece.
2. The active measuring instrument for facilitating adjustment of the amount of tension of the measuring claw according to claim 1, characterized in that: The telescopic cylinder is connected to the main body through a sliding assembly. The sliding assembly includes a dovetail slide rail and a slide seat slidably arranged on the dovetail slide rail. The dovetail slide rail is fixedly connected to the main body, the cylinder body of the telescopic cylinder is fixedly connected to the slide seat, and the positioning piece is installed on the slide seat and positioned with the dovetail slide rail.
3. The active measuring instrument for facilitating adjustment of the amount of tension of the measuring claw according to claim 2, characterized in that: A dovetail groove is provided on the slide seat at a position corresponding to the dovetail slide rail, and the dovetail groove is sleeved on the dovetail slide rail and slides with it; a through hole is provided on the slide seat at a position corresponding to the middle part of the dovetail slide rail, and an adjustment gap is provided between the through hole and the middle part of the dovetail groove, and the positioning part includes an adjusting bolt, which passes through the side wall on one side of the adjustment gap and then passes into the side wall on the other side of the adjustment gap, and the head of the adjusting bolt is stopped outside the side wall on one side of the adjustment gap, and the adjusting bolt is rotationally engaged with the side wall on this side, and the rod of the adjusting bolt is threadedly engaged with the side wall on the other side of the adjustment gap.
4. The active measuring instrument for facilitating adjustment of the amount of tension of the measuring claw according to claim 3, characterized in that: The axial direction of the adjusting bolt is arranged perpendicular to the adjusting gap.
5. The active measuring instrument for facilitating adjustment of the tension of the measuring claw according to claim 1, characterized in that: The connecting node comprises a pillar and a fine-tuning dovetail seat, the measuring claw is movably mounted on the fine-tuning dovetail seat, and the cross arm, the fine-tuning dovetail seat and the lever are all fixedly connected to the pillar.
6. The active measuring instrument for facilitating adjustment of the tension of the measuring claw according to claim 5, characterized in that: The end face of the horizontal arm and the end face of the lever are fitted and fixedly connected, and the end of the lever and the fine-tuning dovetail seat are fixedly sleeved on the middle part of the pillar.
7. The active measuring instrument for facilitating adjustment of the amount of tension of the measuring claw according to claim 5, characterized in that: The end of the dovetail slide rail is threadedly engaged with a limit screw pin, the axial direction of the limit screw pin is the same as the axial direction of the telescopic rod, the free end of the limit screw pin is close to the cross arm or rests on the cross arm, and the middle part of the limit screw pin is threadedly engaged with a locking nut, which is stopped on the end face of the dovetail slide rail.
8. The active measuring instrument for facilitating adjustment of the contraction amount of the measuring claw according to claim 5, characterized in that: The fine-tuning dovetail seat includes a base, a fine-tuning screw rotatably set on the base, and a slider that cooperates with the fine-tuning screw thread. The slider slides with the base along the axial direction of the fine-tuning screw; the base is connected to the pillar, and the measuring claw includes a measuring rod, one end of the measuring rod is fixedly connected to the slider, and a stator is fixedly connected to the other end of the measuring rod.