A measuring jig

Abstract

The utility model relates to the technical field of part measurement, and specifically discloses a measuring jig, the end face of first base is equipped with first sliding slot, first sliding slot is arc, the axis of first sliding slot is parallel with first horizontal direction, the first connecting part of first adjusting block is arc with first sliding slot adaptation, and first connecting part is inserted in first sliding slot, second base is installed in the first main part of first adjusting block, the end face of second base is equipped with second sliding slot, second sliding slot is arc, the axis of second sliding slot is parallel with second horizontal direction, the second connecting part of second adjusting block is arc with second sliding slot adaptation, and second connecting part is inserted in second sliding slot, the clamp is fixed in the second main part of second adjusting block and is used for fixing worm, first adjusting block and first base and second adjusting block and second base can be locked respectively, and first horizontal direction and second horizontal direction are perpendicular, thereby improve the accuracy of detection result and the consistency of detection standard.

Description

Technical Field

[0001] This utility model relates to the field of parts measurement technology, and in particular to a measuring fixture. Background Technology

[0002] The roughness of the helical surface of a worm gear directly affects the friction and transmission efficiency during transmission. Therefore, roughness measurement and inspection are usually performed on worm gears before they leave the factory.

[0003] In measurement operations, contact-type surface profile measuring instruments or roughness profilers are often used. Contact-type measuring instruments are mostly equipped with force probes. During operation, the area to be measured needs to be kept perpendicular to the force probe to reduce cosine error. However, existing fixtures are difficult to adjust the placement posture of the worm gear during operation.

[0004] Therefore, a measuring fixture is urgently needed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a measuring fixture to solve the problem of inconsistent measurement standards.

[0006] On the one hand, this utility model provides a measuring fixture, which includes:

[0007] The first base has a first groove on its end face. The first groove is arc-shaped and its axis is parallel to the first horizontal direction.

[0008] The first adjusting block includes a first main body and a first connecting part. The first connecting part is fixed to the first main body and is in the shape of an arc that is adapted to the first sliding groove. The first connecting part is inserted into the first sliding groove.

[0009] The second base is installed on the first main body of the first adjusting block. The end face of the second base is provided with a second sliding groove. The second sliding groove is arc-shaped and the axis of the second sliding groove is parallel to the second horizontal direction.

[0010] The second adjusting block includes a second main body and a second connecting part. The second connecting part is fixed to the second main body and is arc-shaped to fit the second slide groove. The second connecting part is inserted into the second slide groove.

[0011] A clamp is fixed to the second main body of the second adjusting block and is used to fix the worm gear.

[0012] The first adjusting block and the first base, and the second adjusting block and the second base, can be locked respectively;

[0013] The first horizontal direction mentioned above is perpendicular to the second horizontal direction mentioned above.

[0014] As a preferred embodiment of the above-mentioned measuring fixture, the fixture includes a slide table, a first clamping block, a second clamping block, and a driving member. The slide table is fixed to the second adjusting block, the first clamping block is fixed to one end of the slide table, the second clamping block is slidably connected to the slide table, and the driving member is mounted on the slide table. The driving member drives the second clamping block to move toward the side where the first clamping block is located.

[0015] As a preferred embodiment of the above-mentioned measuring fixture, the fixture further includes a support block, which is fixed to the other side of the slide. The first clamping block, the second clamping block, and the support block are sequentially located on the same straight line. The driving component is a threaded fastener, which is threadedly connected to the support block and rotatably connected to the second clamping block.

[0016] As a preferred embodiment of the above-mentioned measuring fixture, the second clamping block has a first U-shaped groove on the side opposite to the first clamping block, and the support block can be inserted into the first U-shaped groove.

[0017] As a preferred embodiment of the above-mentioned measuring fixture, the first clamping block and / or the second clamping block are provided with limiting grooves.

[0018] As a preferred embodiment of the above-mentioned measuring fixture, multiple second bases and second adjusting blocks are provided in a one-to-one correspondence, and the multiple second bases are spaced apart along the length direction of the slide.

[0019] As a preferred embodiment of the above-mentioned measuring fixture, it further includes a first locking pin, one end of which is inserted into the first base and can abut against the first adjusting block to lock the relative position of the first adjusting block and the first base.

[0020] As a preferred embodiment of the above-mentioned measuring fixture, it further includes a second locking pin, one end of which is inserted into the second adjusting block and can abut against the second base to lock the relative position of the second adjusting block and the second base.

[0021] As a preferred embodiment of the aforementioned measuring fixture, the first base is provided with a second U-shaped groove along the horizontal direction.

[0022] As a preferred embodiment of the above-mentioned measuring fixture, it further includes a third adjusting block, which is inserted vertically into the first adjusting block and is rotatable relative to the first adjusting block. The second base is mounted on the third adjusting block.

[0023] The measuring fixture provided by this utility model has at least the following beneficial effects:

[0024] This application provides a measuring fixture, including a first base, a first adjusting block, a second base, a second adjusting block, and a clamp. The first base has a first arc-shaped groove on its end face, and the axis of the first arc-shaped groove is parallel to a first horizontal direction. The first adjusting block includes a first main body and a first connecting part, which is fixed to the first main body and is arc-shaped to fit the first arc-shaped groove, inserted into the first arc-shaped groove. The second base is mounted on the first main body of the first adjusting block, and its end face has a second arc-shaped groove, the axis of which is parallel to a second horizontal direction. The second adjusting block includes a second main body and a second connecting part, which is fixed to the second main body and is arc-shaped to fit the second arc-shaped groove, inserted into the second arc-shaped groove. The clamp is fixed to the second main body of the second adjusting block for fixing a worm gear. The first adjusting block and the first base, and the second adjusting block and the second base, can be locked respectively. The first horizontal direction is perpendicular to the second horizontal direction.

[0025] For example, the lower end face of the first base is used to place on the platform, and the upper end face of the first base is a downwardly concave arc surface. A first sliding groove is formed on the upper end face. The first sliding groove is an arc-shaped groove, and the axis of the first sliding groove coincides with the axis of the upper end face. The lower end face of the first main body of the first adjusting block is a downwardly convex arc shape. The lower end face of the first main body and the upper end face of the first base are arcs of equal radius. A first connecting part is fixed to the lower end face of the first main body. The first connecting part is an arc-shaped protrusion, and the axis of the first connecting part coincides with the circle of the first main body. The first connecting part is inserted into the first sliding groove. The axis of the first adjusting block coincides with the axis of the upper end face of the first base, and the first adjusting block can rotate relative to the first base around the axis. A second base is installed on the first adjusting block. The upper end face of the second base is a downwardly concave arc surface, and a second sliding groove is formed on the upper end face. The second sliding groove is an arc-shaped groove, and the axis of the second sliding groove coincides with the axis of the upper end face. The lower end face of the second main body of the second adjusting block is a downwardly convex arc shape. The lower end face of the second main body and the upper end face of the second base are arcs of equal radius. The second connecting part is fixed to the lower end face of the second main body. The second connecting part is an arc-shaped protrusion. The axis of the second connecting part coincides with the circle of the second main body. The second connecting part is inserted into the second sliding groove. The axis of the second adjusting block coincides with the axis of the upper end face of the second base. The second adjusting block can rotate relative to the second base around its axis. A clamp is installed on the second adjusting block. The clamp is used to fix the worm gear. By rotating the first and second adjusting blocks, the placement posture of the worm gear in space can be changed, making it easier to maintain a perpendicular relationship with the detection probe, thereby improving the accuracy of the detection results and the consistency of the detection standards. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the measuring fixture in an embodiment of the present invention;

[0027] Figure 2 This is an exploded view of the first base and the first adjusting block in an embodiment of the present utility model;

[0028] Figure 3 This is an exploded view of the measuring fixture (excluding the first base and the first adjusting block) in an embodiment of this utility model.

[0029] In the picture:

[0030] X: First horizontal direction; Y: Second horizontal direction; Z: Vertical direction;

[0031] 1. First base; 11. First slide groove; 12. Second U-shaped groove;

[0032] 2. First adjusting block; 21. First main body; 22. First connecting part;

[0033] 3. Second base;

[0034] 4. Second adjusting block;

[0035] 5. Fixture; 51. First clamping block; 511. First limiting groove A; 52. Second clamping block; 521. First U-shaped groove; 522. Second limiting groove A; 53. Driving component; 54. Support block; 55. Slide table;

[0036] 61. First locking pin; 62. Second locking pin;

[0037] 7. Third adjusting block. Detailed Implementation

[0038] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0039] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Moreover, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0042] like Figures 1 to 3As shown, this application provides a measuring fixture, including a first base 1, a first adjusting block 2, a second base 3, a second adjusting block 4, and a clamp 5. The first base 1 has a first sliding groove 11 on its end face, the first sliding groove 11 being arc-shaped, and its axis parallel to a first horizontal direction X. The first adjusting block 2 includes a first main body 21 and a first connecting part 22, the first connecting part 22 being fixed to the first main body 21, and the first connecting part 22 being arc-shaped to fit the first sliding groove 11, and inserted into the first sliding groove 11. The second base 3 is mounted on the first main body 21 of the first adjusting block 2, and the end face of the second base 3 has a second adjusting block 4. The second sliding groove is arc-shaped, and its axis is parallel to the second horizontal direction Y. The second adjusting block 4 includes a second main body and a second connecting part. The second connecting part is fixed to the second main body and is arc-shaped to fit the second sliding groove. The second connecting part is inserted into the second sliding groove. The clamp 5 is fixed to the second main body of the second adjusting block 4 and is used to fix the worm gear. The first adjusting block 2 and the first base 1 and the second adjusting block 4 and the second base 3 can be locked respectively. The first horizontal direction X is perpendicular to the second horizontal direction Y.

[0043] For example, the lower end face of the first base 1 is used to place on the platform, and the upper end face of the first base 1 is a downwardly concave arc surface. A first groove 11 is provided on the upper end face. The first groove 11 is an arc-shaped groove, and the axis of the first groove 11 coincides with the axis of the upper end face. The lower end face of the first main body 21 of the first adjusting block 2 is a downwardly convex arc shape. The lower end face of the first main body 21 and the upper end face of the first base 1 are arcs of equal radius. The first connecting part 22 is fixed to the lower end face of the first main body 21. The first connecting part 22 is an arc-shaped protrusion. The axis of the first connecting part 22 coincides with the circle of the first main body 21. The first connecting part 22 is inserted into the first groove 11. The axis of the first adjusting block 2 coincides with the axis of the upper end face of the first base 1. The first adjusting block 2 can rotate relative to the first base 1 around the axis. The second base 3 is mounted on the first adjusting block 2. The upper surface of the second base 3 is a downwardly concave arc surface, and a second groove is provided on the upper surface. The second groove is an arc-shaped groove, and its axis coincides with the axis of the upper surface. The lower surface of the second main body of the second adjusting block 4 is a downwardly convex arc shape. The lower surface of the second main body and the upper surface of the second base 3 are arcs of equal radius. The second connecting part is fixed to the lower surface of the second main body. The second connecting part is an arc-shaped protrusion, and its axis coincides with the circle of the second main body. The second connecting part is inserted into the second groove. The axis of the second adjusting block 4 coincides with the axis of the upper surface of the second base 3. The second adjusting block 4 can rotate relative to the second base 3 around its axis. The clamp 5 is mounted on the second adjusting block 4. The clamp 5 is used to fix the worm gear. By rotating the first adjusting block 2 and the second adjusting block 4, the placement posture of the worm gear in space can be changed, making it easier to maintain a perpendicular relationship with the detection probe, thereby improving the accuracy of the detection results and the consistency of the detection standards.

[0044] Furthermore, during measurement, the first adjusting block 2 is rotated by the same degree as the pressure angle of the worm, and the second adjusting block 4 is rotated by the same degree as the helical angle of the worm, so that the tooth surface is located on the horizontal plane.

[0045] Furthermore, the first adjusting block 2 and / or the second adjusting block 4 are integrally formed.

[0046] Optionally, the clamp 5 includes a slide 55, a first clamping block 51, a second clamping block 52, and a drive member 53. The slide 55 is fixed to the second adjusting block 4, the first clamping block 51 is fixed to one end of the slide 55, the second clamping block 52 is slidably connected to the slide 55, and the drive member 53 is installed on the slide 55. The drive member 53 drives the second clamping block 52 to move toward the side where the first clamping block 51 is located.

[0047] For example, the slide 55 is fixed to the second adjusting block 4. When the second adjusting block 4 slides relative to the second base 3, the slide 55 slides together with the second adjusting block 4. The first clamping block 51 is a stationary clamping block, which is fixed to one end of the slide 55 along its length. The second clamping block 52 is a movable clamping block, which is slidably connected to the slide 55 and the relative movement direction between the two is the length direction of the slide 55. The first clamping block 51 and the second clamping block 52 are used to clamp the worm gear. The driving member 53 is installed on the slide 55 and is used to drive the second clamping block 52 to move relative to the slide 55.

[0048] Furthermore, the slide table 55 and the second adjusting block 4 are integrally formed.

[0049] Furthermore, the first clamping block 51 and the slide table 55 are integrally formed.

[0050] Furthermore, the drive component 53 can be a telescopic cylinder, a crank-slider, or other structure capable of linear movement.

[0051] Specifically, the slide table 55 has guide grooves on both sides in its width direction. The depth direction of the guide grooves is consistent with the width direction of the slide table 55, and the length direction of the guide grooves is consistent with the length direction of the slide table 55. The second clamping block 52 has limiting protrusions on both sides of its width, and the two limiting protrusions are respectively inserted into the guide grooves on the corresponding sides. In this way, the opposite side walls of the guide grooves in the thickness direction of the slide table 55 can restrict the limiting protrusions.

[0052] Optionally, the clamp 5 also includes a support block 54, which is fixed to the other side of the slide table 55. The first clamping block 51, the second clamping block 52 and the support block 54 are located in the same straight line in sequence. The driving component 53 is a threaded fastener, which is threadedly connected to the support block 54 and rotatably connected to the second clamping block 52.

[0053] For example, the support block 54 has a threaded hole, the drive member 53 is a threaded fastener, one end of the drive member 53 can rotate relative to the second clamping block 52, and can move axially against the second clamping block 52.

[0054] Optionally, the first clamping block 51 and / or the second clamping block 52 may have limiting grooves.

[0055] For example, the first clamping block 51 has a first limiting groove A511, and the second clamping block 52 has a second limiting groove A522. The length direction of the first limiting groove A511 and the second limiting groove A522 is the width direction of the slide table 55. The first limiting groove A511 and the second limiting groove A522 are symmetrically arranged in the length direction of the slide table 55. The worm gear clamped between the first clamping block 51 and the second clamping block 52 is at least partially inserted into the first limiting groove A511 and the second limiting groove A522 so that the axis of the worm gear is parallel to the width direction of the slide table 55.

[0056] For example, the first clamping block 51 has a first limiting groove B, and the second clamping block 52 has a second limiting groove B. The length direction of the first limiting groove B and the second limiting groove B are both the thickness direction of the slide table 55. The first limiting groove B and the second limiting groove B are symmetrically arranged in the length direction of the slide table 55. The worm gear clamped between the first clamping block 51 and the second clamping block 52 is at least partially inserted into the first limiting groove B and the second limiting groove B so that the axis of the worm gear is parallel to the thickness direction of the slide table 55.

[0057] Optionally, the second clamping block 52 has a first U-shaped groove 521 on the side opposite to the first clamping block 51, and the support block 54 can be inserted into the first U-shaped groove 521.

[0058] This configuration increases the stroke of the second clamp 52, making it suitable for more types of worm gears.

[0059] Optionally, the measuring fixture may also include a first locking pin 61, one end of which is inserted into the first base 1 and can abut against the first adjusting block 2 to lock the relative position of the first adjusting block 2 and the first base 1.

[0060] For example, the first base 1 has a threaded hole, and the first locking pin 61 has an external thread. The first locking pin 61 is threadedly connected to the first base 1, and one end of the first positioning pin can abut against the first adjusting block 2 to restrict the relative rotation of the first adjusting block 2 relative to the first base 1. In this embodiment, the first slide groove 11 is a T-shaped groove, and the first connecting part 22 of the first adjusting block 2 is a T-shaped protrusion. Thus, the first slide groove 11 can restrict the first adjusting block 2 from disengaging from the first base 1.

[0061] For example, the first base 1 has a first light hole A, and the first adjusting block 2 has a plurality of second light holes A. The plurality of second light holes A are evenly distributed around the axis of the first adjusting block 2. When the first adjusting block 2 rotates relative to the first base 1, each second light hole A can be coaxially arranged with the first light hole A. When the first adjusting block 2 rotates to a preset angle, the first locking pin 61 is inserted into the first light hole and the second light hole coaxial with it to complete the locking.

[0062] Optionally, the measuring fixture also includes a second locking pin 62, one end of which is inserted into the second adjusting block 4 and can abut against the second base 3 to lock the relative position of the second adjusting block 4 and the second base 3.

[0063] For example, the second adjusting block 4 has a threaded hole, and the second locking pin 62 has an external thread. The second locking pin 62 is threadedly connected to the second adjusting block 4, and one end of the second locking pin 62 can abut against the second base 3 to restrict the relative rotation of the second adjusting block 4 relative to the second base 3. In this embodiment, the second sliding groove is a T-shaped groove, and the second connecting part of the second adjusting block 4 is a T-shaped protrusion. In this way, the second sliding groove can restrict the disengagement of the second adjusting block 4 from the second base 3.

[0064] For example, the second adjusting block 4 has a first light hole B, and the second base 3 has a plurality of second light holes B. The plurality of second light holes B are evenly distributed around the axis of the second adjusting block 4. When the second adjusting block 4 rotates relative to the second base 3, each second light hole B can be coaxially arranged with the first light hole B. When the second adjusting block 4 rotates to a preset angle, the second locking pin 62 is inserted into the first light hole B and the second light hole B coaxial with it to complete the locking.

[0065] Optionally, the first base 1 has a second U-shaped groove 12 in the horizontal direction.

[0066] This configuration makes it easy for the first base 1 to be fixed to the platform using threaded fasteners.

[0067] Optionally, multiple second bases 3 and second adjusting blocks 4 are provided in a one-to-one correspondence, with the multiple second bases 3 spaced apart along the length of the slide table 55. This is to maintain the balance of the clamp 5.

[0068] Optionally, the measuring fixture also includes a third adjusting block 7, which is inserted into the first adjusting block 2 in the vertical direction Z. The third adjusting block 7 can rotate relative to the first adjusting block 2, and the second base 3 is mounted on the third adjusting block 7.

[0069] For example, the first adjusting block 2 has a light hole in the vertical direction Z, and the third adjusting block 7 is inserted into the light hole. The third adjusting block 7 is inserted into the light hole of the first adjusting block 2. The third adjusting block 7 can rotate relative to the second adjusting hole around its own axis. The third adjusting block 7 drives the second adjusting block 4 and the clamp 5 to move together.

[0070] Furthermore, the second base 3 and the third adjusting block 7 are integrally formed.

[0071] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A measuring fixture, characterized in that, include: The first base (1) has a first groove (11) on its end face. The first groove (11) is arc-shaped and its axis is parallel to the first horizontal direction (X). The first adjusting block (2) includes a first main body (21) and a first connecting part (22). The first connecting part (22) is fixed to the first main body (21). The first connecting part (22) is in the shape of an arc adapted to the first slide groove (11). The first connecting part (22) is inserted into the first slide groove (11). The second base (3) is installed on the first main body (21) of the first adjusting block (2). The end face of the second base (3) is provided with a second sliding groove. The second sliding groove is arc-shaped and the axis of the second sliding groove is parallel to the second horizontal direction (Y). The second adjusting block (4) includes a second main body and a second connecting part. The second connecting part is fixed to the second main body and is in the shape of an arc that is adapted to the second slide groove. The second connecting part is inserted into the second slide groove. The clamp (5) is fixed to the second main body of the second adjusting block (4) and is used to fix the worm gear; The first adjusting block (2) and the first base (1) and the second adjusting block (4) and the second base (3) can be locked respectively; The first horizontal direction (X) is perpendicular to the second horizontal direction (Y).

2. The measuring fixture according to claim 1, characterized in that, The clamp (5) includes a slide (55), a first clamp (51), a second clamp (52), and a drive member (53). The slide (55) is fixed to the second adjusting block (4). The first clamp (51) is fixed to one end of the slide (55). The second clamp (52) is slidably connected to the slide (55). The drive member (53) is mounted on the slide (55) and drives the second clamp (52) to move toward the side where the first clamp (51) is located.

3. The measuring fixture according to claim 2, characterized in that, The clamp (5) further includes a support block (54), which is fixed to the other side of the slide (55). The first clamp (51), the second clamp (52) and the support block (54) are located in the same straight line. The driving member (53) is a threaded fastener, which is threadedly connected to the support block (54) and rotatably connected to the second clamp (52).

4. The measuring fixture according to claim 3, characterized in that, The second clamping block (52) has a first U-shaped groove (521) on the side opposite to the first clamping block (51), and the support block (54) can be inserted into the first U-shaped groove (521).

5. The measuring fixture according to claim 2, characterized in that, The first clamping block (51) and / or the second clamping block (52) have limiting grooves.

6. The measuring fixture according to claim 2, characterized in that, Multiple second bases (3) and second adjustment blocks (4) are provided in a one-to-one correspondence, and multiple second bases (3) are spaced apart along the length direction of the slide (55).

7. The measuring fixture according to claim 1, characterized in that, It also includes a first locking pin (61), one end of which is inserted into the first base (1) and can abut against the first adjusting block (2) to lock the relative position of the first adjusting block (2) and the first base (1).

8. The measuring fixture according to claim 1, characterized in that, It also includes a second locking pin (62), one end of which is inserted into the second adjusting block (4) and can abut against the second base (3) to lock the relative position of the second adjusting block (4) and the second base (3).

9. The measuring fixture according to claim 1, characterized in that, The first base (1) has a second U-shaped groove (12) in the horizontal direction.

10. The measuring fixture according to any one of claims 1-9, characterized in that, It also includes a third adjusting block (7), which is inserted into the first adjusting block (2) in the vertical direction (Z). The third adjusting block (7) can rotate relative to the first adjusting block (2), and the second base (3) is mounted on the third adjusting block (7).

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