Scale grating fixing tool for grating ruler

Abstract

The utility model discloses a scale grating fixing tool for a grating ruler. The scale grating fixing tool comprises a limiting piece, a connecting rod and a limiting block. The limiting piece is used for being connected to a ruler body of the grating ruler in a limiting mode, and the limiting piece is provided with a vertically-through threaded hole. The connecting rod is provided with a screw rod part and a head part, and the connecting rod is in threaded connection with the limiting piece through the screw rod part. The limiting block is connected with the head of the connecting rod, the limiting block is provided with a limiting groove matched with the scale grating, and the limiting block limits the scale grating through the limiting groove. The main innovation of the utility model lies in that the limiting block with the limiting groove is added on the basis of the original fixing tool, the limiting block is embedded at the top of the scale grating through the limiting groove, the groove wall of the limiting groove is utilized to limit the scale grating in more directions, and the scale grating can be fixed in more directions by combining the mounting structure of the scale body. The scale grating can be fully limited, and the problems of displacement, inclination angle deviation and the like of the scale grating are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling for grating ruler production, in particular to a scale grating fixing tooling for a grating ruler. Background Art

[0002] Grating ruler, also known as grating sensor, is a high-resolution and high-precision displacement sensor used in various precision testing equipment. The structure of grating ruler is roughly composed of two main parts: grating reading head and ruler body. The grating reading head is installed on the movable machine tool part, containing the grating mask, which is the indicator grating, and the scale grating and ruler body are installed on the fixed part of the machine tool.

[0003] The scale grating of domestic grating rulers is generally made of glass. The scale grating is usually installed at a certain tilt angle (45°), and the bottom of the scale grating is fixed in the ruler body by glue. The grating ruler relies on manual assembly, and before the glue solidifies, the scale grating may move due to external factors, or the installation accuracy of the scale grating may not meet the requirements due to the problem of glue curing speed in different parts, which will affect the accuracy and use of the grating ruler.

[0004] The Chinese utility model patent with announcement number CN220853460 U discloses a fixing fixture for a grating ruler, including a limiter and a support member. Both sides of the limiter have a clamping block adapted to the guide groove of the ruler body, the clamping block is clamped in the guide groove of the ruler body, the limiter has a screw hole, and the support member is adjustably connected to the limiter. The support member includes a support portion and a support rod, the support portion is connected to one end of the support rod, the support portion acts on the glass ruler, the support rod has a thread, the support rod is threadedly connected to the screw hole of the limiter block, and the distance between the limiter and the support portion can be adjusted within the length range of the support rod. The utility model has the advantage of being able to solve the problem that when the adhesive is not completely solidified, the glass ruler is prone to loosening, thereby causing the inclination angle of the glass ruler in the groove to change.

[0005] However, the supporting part of the supporting member of the existing fixing fixture is essentially the head of the bolt, and the supporting part limits the scale grating by abutting against the top of the scale grating. However, the contact between the two is only through the surface of the supporting part abutting against the edge of the scale grating, and the limiting effect on the scale grating is limited. Utility Model Content

[0006] In order to overcome the above technical defects, the utility model provides a scale grating fixing tool for a grating ruler.

[0007] In order to solve the above problems, the utility model is implemented according to the following technical solutions:

[0008] The utility model discloses a scale grating fixing tool for a grating ruler, comprising a limiting member, wherein the limiting member is used for limiting connection to the ruler body of the grating ruler, and the limiting member has a threaded hole penetrating from top to bottom. The scale grating fixing tool also includes:

[0009] A connecting rod, the connecting rod having a screw portion and a head, the connecting rod being threadedly connected to the stopper through the screw portion;

[0010] A limit block is connected to the head of the connecting rod, the limit block has a limit groove adapted to the scale grating, and the limit block limits the scale grating through the limit groove.

[0011] Preferably, the limiting groove is exposed on the lower surface of the limiting block, the limiting groove has two inclined groove walls, and the limiting groove can be engaged with the top of the scale grating from top to bottom.

[0012] Preferably, a groove wall of the limiting groove of the limiting block is connected with a rubber sheet, and the rubber sheet is used to contact the scale grating.

[0013] Preferably, the top of the limit block has a mounting groove adapted to the head of the connecting rod, and the bottom of the mounting groove is provided with a magnet;

[0014] The limit block is magnetically connected to the head of the connecting rod through a magnet, so that the limit block and the connecting rod can be installed and separated.

[0015] Preferably, the head of the connecting rod is a cylinder, and the mounting groove of the limiting block is a matching cylindrical cavity, so that the limiting block can rotate around the axis of the connecting rod.

[0016] Preferably, the installation groove of the limiting block has the same depth as the head of the connecting rod so as to wrap the head of the connecting rod.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model provides a scale grating fixing tool for a grating ruler, comprising a limiter, a connecting rod and a limiter block. The limiter is used for limiting connection to the ruler body of the grating ruler, and the limiter has a threaded hole running through it from top to bottom. The connecting rod has a screw portion and a head, and the connecting rod is threadedly connected to the limiter through the screw portion. The limiter block is connected to the head of the connecting rod, and the limiter block has a limiter groove adapted to the scale grating, and the limiter block limits the scale grating through the limiter groove.

[0019] The main innovation of the utility model is that, on the basis of the original fixed tooling, a limit block with a limit slot is added, and the limit block is embedded in the top of the scale grating through the limit slot, and the scale grating is restricted in more directions by using the groove wall of the limit slot, and combined with the installation structure of the ruler body, the scale grating can be fully limited to avoid displacement, tilt angle deviation and other problems of the scale grating. The adhesive installation of the scale grating is comprehensively guaranteed to improve the yield rate of the grating ruler, and it is an excellent auxiliary tooling for manual assembly of the grating ruler. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0021] Figure 1 It is a three-dimensional schematic diagram of a scale grating fixing tool for a grating ruler of the utility model;

[0022] Figure 2 It is a schematic diagram of the assembly of a scale grating fixing tool for a grating ruler of the utility model;

[0023] Figure 3 It is a front view of a scale grating fixing tool for a grating ruler of the utility model;

[0024] Figure 4 It is a schematic diagram of the AA section of a scale grating fixing tool for a grating ruler of the utility model;

[0025] In the figure:

[0026] 10-connecting rod, 11-screw part, 12-head;

[0027] 20-limiting block, 21-limiting slot, 22-installing slot, 23-magnet.

[0028] 30-limiting piece;

[0029] 40- ruler body, 41- ruler grating. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0031] like Figure 1 to Figure 4 As shown, the preferred structure of a scale grating fixing tool for a grating ruler described in the utility model.

[0032] like Figure 1As shown, the scale grating fixing fixture for the grating ruler includes a limiter 30, a connecting rod 10 and a limiter block 20. The limiter is used to limit the connection to the ruler body 40 of the grating ruler, and the limiter has a threaded hole that runs through the upper and lower parts. The connecting rod has a screw portion 11 and a head 12, and the connecting rod is threadedly connected to the limiter through the screw portion. The limiter block is connected to the head of the connecting rod, and the limiter block has a limiter groove 21 adapted to the scale grating, and the limiter block limits the scale grating 41 through the limiter groove.

[0033] The main innovation of the utility model is that, on the basis of the original fixed tooling, a limit block with a limit slot is added, and the limit block is embedded in the top of the scale grating through the limit slot, and the scale grating is restricted in more directions by using the groove wall of the limit slot, and combined with the installation structure of the ruler body, the scale grating can be fully limited to avoid displacement, tilt angle deviation and other problems of the scale grating. The adhesive installation of the scale grating is comprehensively guaranteed to improve the yield rate of the grating ruler, and it is an excellent auxiliary tooling for manual assembly of the grating ruler.

[0034] In the utility model, the structure and use principle of the limit block are as follows: See the prior art publication No. The record in the new model is exactly the same as For this reason, the present invention will not be described in detail herein.

[0035] Specifically, both sides of the limiter have blocks that match the guide grooves of the ruler body, and the blocks are connected to the guide grooves of the ruler body. It should be noted that the guide grooves of the existing grating ruler body are used to clamp the grating reading head, and the grating reading head can move back and forth along the length direction of the guide groove. Similarly, the limiter of the present patent is also designed to move back and forth along the length direction of the guide groove. Because the installation of the scale grating often requires 3 to 10 scale grating fixing fixtures to be used in coordination, the combination of guide grooves and limiters can flexibly adjust the position of the scale grating fixing fixtures and the spacing between adjacent scale grating fixing fixtures. The specific number of scale grating fixing fixtures can be set according to the length specifications of the grating ruler.

[0036] like Figure 2 As shown, the connecting rod includes a threaded rod and a head at the bottom of the threaded rod. The stopper is made of metal materials such as aluminum alloy, and the middle of the stopper has a threaded hole that runs through the upper and lower parts. The threaded rod of the connecting rod is screwed in clockwise or out counterclockwise to realize the position of the connecting rod relative to the stopper.

[0037] Specifically, when the stopper is installed on the ruler, the depth of the head of the connecting rod extending into the ruler can be adjusted by screwing the threaded rod of the connecting rod clockwise or counterclockwise. The head of the connecting rod is a smooth cylinder, and the height of the head can be 5 to 10 mm, which can be designed according to the specific specifications of the ruler.

[0038] like Figure 4 As shown, the top of the limit block has a mounting groove 22 adapted to the head of the connecting rod, and the bottom of the mounting groove is provided with a magnet 23; the limit block is magnetically connected to the head of the connecting rod through the magnet to achieve the installation and separation of the limit block and the connecting rod. Specifically, the mounting groove of the limit block is a matching cylindrical cavity so that the limit block can rotate around the axis of the connecting rod.

[0039] With this design, because the connecting rod is connected by threads, it needs to be rotated to adjust the position. In this design, the limit block cannot be fixedly connected to the connecting rod, but should be movable. Because when the limit slot of the limit block is engaged with the top of the scale grating from top to bottom, the limit slot may not be fully engaged at this time, and the connecting rod needs to be further adjusted downward until it hits the main limit block to limit the scale grating.

[0040] To this end, the connecting rod and the limit block should be able to move with each other, at least the limit block can rotate independently around the axis of the connecting rod. The use of magnets for connection is convenient for installation and disassembly, and the overall size of the tooling is limited. This design can well reduce the size of parts and the overall structure. On the other hand, the limit blocks of different sizes can be replaced according to the different specifications of the grating ruler.

[0041] In a preferred embodiment, the depth of the installation groove of the limit block is the same as the head of the connecting rod to wrap the head of the connecting rod. This design can well ensure the limit effect and avoid the active gap between the limit block and the connecting rod being too large to affect the limit effect.

[0042] like Figure 4 As shown, the lower surface of the limit block reveals the limit groove, which has two inclined groove walls, and the limit groove can be embedded with the top of the scale grating from top to bottom. The limit block is embedded in the top of the scale grating through the limit groove, and the scale grating is restricted in more directions by using the groove wall of the limit groove. In combination with the installation structure of the ruler body, the scale grating can be fully limited to avoid displacement, tilt angle deviation and other problems of the scale grating. The adhesive installation of the scale grating is comprehensively guaranteed to improve the yield rate of the grating ruler, and it is an excellent auxiliary tooling for manual assembly of the grating ruler.

[0043] In a preferred implementation, a groove wall of the limiting groove of the limiting block is connected with a rubber sheet, and the rubber sheet is used to contact the scale grating.

[0044] Because the contact area between the limit groove and the scale grating is increased, in order to better protect the scale grating, a thin layer of rubber sheet can be used for protection. The rubber sheet can be bonded by a metal adhesive.

[0045] For other structures of the scale grating fixing fixture for the grating ruler described in this embodiment, refer to the prior art.

[0046] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A scale grating fixing tool for a grating ruler, comprising a limiter, the limiter is used to limit the connection to the ruler body of the grating ruler, the limiter has a threaded hole running through it from top to bottom, and is characterized in that: The scale grating fixing tool also includes: A connecting rod, the connecting rod having a screw portion and a head, the connecting rod being threadedly connected to the stopper through the screw portion; A limit block is connected to the head of the connecting rod, the limit block has a limit groove adapted to the scale grating, and the limit block limits the scale grating through the limit groove.

2. The scale grating fixing fixture for a grating ruler according to claim 1, characterized in that: The limiting groove is exposed on the lower surface of the limiting block. The limiting groove has two inclined groove walls. The limiting groove can be embedded with the top of the scale grating from top to bottom.

3. The scale grating fixing fixture for a grating ruler according to claim 1, characterized in that: The groove wall of the limiting groove of the limiting block is connected with a rubber sheet, and the rubber sheet is used for contacting the scale grating.

4. The scale grating fixing fixture for a grating ruler according to claim 1, characterized in that: The top of the limit block is provided with a mounting groove adapted to the head of the connecting rod, and the bottom of the mounting groove is provided with a magnet; The limit block is magnetically connected to the head of the connecting rod through a magnet, so that the limit block and the connecting rod can be installed and separated.

5. The scale grating fixing fixture for a grating ruler according to claim 4, characterized in that: The head of the connecting rod is a cylinder, and the mounting groove of the limiting block is a matching cylindrical cavity, so that the limiting block can rotate around the axis of the connecting rod.

6. The scale grating fixing fixture for a grating ruler according to claim 5, characterized in that: The installation groove of the limiting block has the same depth as the head of the connecting rod so as to wrap the head of the connecting rod.

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