Device for measuring distance between two arm end faces and two inner or outer end face intersection point axes of angular piece

Abstract

The invention discloses a device for measuring the distance between two arm end faces and two inner or outer end face intersection point axes of an angular piece. A foundation plate is provided with a T-shaped key groove and an inclined T-shaped key groove which are intersected at an angle of 45 degrees; the L-shaped step positioning block and the pressing mechanism are arranged on the foundation plate; the central axis of a fixing hole formed in the bottom face of the inclined T-shaped key groove is located on the extending face of the vertical face of the step of the L-shaped step positioning block. The angle positioning block is rotatably fixed in a fixing hole in the foundation plate; the main fixing seat and the vernier fixing seat are slidably assembled in the T-shaped key groove and the inclined T-shaped key groove. During testing, a to-be-tested part is placed on a step of the L-shaped step positioning block, positioned by the angle positioning block and pressed and fixed by the pressing mechanism, so that the main fixing seat is tightly attached to the end of a testing arm of the to-be-tested part. The device is simple in structure, easy to manufacture and low in cost; the device is simple in operation, is high in measurement speed, and is more suitable for the detection and measurement of a large batch of single-angle arc-shaped bent angular parts.

Description

Technical Field

[0001] The invention belongs to the technical field of measuring the length of parts, and relates to a device for measuring the distance between the end faces of two arms of an arc-shaped transition angle piece and the intersection line of two inner end faces or the intersection line of two outer end faces. Background Art

[0002] The angled parts formed by bending are generally arc-shaped transition angles, such as Figure 1 As shown, the technical parameters marked by the designer on the drawing are generally the size of the distance L2 or L1 between the end faces of the two arms of the angle piece and the intersection line of the two inner end faces or the intersection line of the two outer end faces. In order to ensure the accuracy requirements of the arc transition angle piece, it is necessary to measure the L2 and L1 of the manufactured arc transition angle piece, and then compare them with the L2 and L1 values ​​marked on the design drawing. As long as the error is within the specified error range, the accuracy requirements of the arc transition angle piece can be guaranteed. The existing L2 and L1 measurement uses a three-coordinate measuring machine. The measurement of L2 or L1 requires three surfaces to be measured separately, namely the end face of one arm of the arc transition angle piece, the two inner end faces or the two outer end faces. Three points need to be taken for each determination of a surface. Then, 9 points need to be taken to measure the L2 or L1 of the arc transition angle piece. The operation is complicated and requires professional personnel who can use computers to operate. The measurement speed is slow. When a large number of parts are measured, the measurement efficiency is extremely low. In addition, the price of the three-coordinate measuring machine is high and the measurement cost is high. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art and to provide a device for measuring the distance between the end faces of the two arms of an angled piece and the axis of the intersection of the two inner or outer end faces. The device has a simple structure, is easy to manufacture and has a low cost. It is also simple to operate, has a fast measuring speed and has low requirements on the professional level of the measuring personnel. It is more suitable for the detection and measurement of large quantities of single-angle arc-shaped bent angled pieces.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a device for measuring the distance between the end faces of the two arms of an angled piece and the axis of the intersection of the two inner or outer end faces, comprising a base plate, an L-shaped step positioning block, an angle positioning block, a first fixed axis, a clamping mechanism and a vernier caliper; the base plate is provided with a T-shaped keyway and an oblique T-shaped keyway, the T-shaped keyway intersects the oblique T-shaped keyway at an angle of 45° and the intersection A is close to one end of the base plate; a fixing hole whose central axis intersects perpendicularly with the central axis of the bottom surface of the oblique T-shaped keyway is provided on the bottom surface of the oblique T-shaped keyway near the intersection A; the L-shaped step positioning block and the clamping mechanism are respectively fixed on or The L-shaped step positioning block is formed integrally on the base plate on both sides of the oblique T-shaped keyway; the L-shaped step positioning block is located between the T-shaped keyway and the oblique T-shaped keyway, and the central axis of the fixing hole is located on the extension surface of the vertical surface of the step of the L-shaped step positioning block; the angle positioning block has an L-shaped step in the length direction, and one end of the protruding block protrudes with the upper end surface flush with the horizontal surface of the L-shaped step, and the protruding block is provided with a vertical mounting hole whose central axis is located on the extension surface of the vertical surface of the L-shaped step; the angle positioning block is rotatably fixed to the base plate by a first fixed shaft fixed in the fixing hole of the base plate; the vernier caliper includes a main scale and a protruding block installed on the main scale The main scale comprises a long strip main scale and a rectangular main fixed seat, the main scale is fixed on the upper end face of the main fixed seat with the end face close to the L-shaped step positioning block flush with the end face of the main fixed seat or is integrally embedded in the groove of the end face of the main fixed seat, the zero scale line of the main scale coincides with the vertical face of the step of the L-shaped step positioning block; the vernier scale comprises a vernier scale and a vernier fixed seat for fixing the vernier scale, the upper end face of the vernier fixed seat has a sliding groove tightly assembled with the main fixed seat and slidable; the lower end of the main fixed seat close to one end of the L-shaped step positioning block extends out and is used in conjunction with the T-shaped keyway of the base plate T-key, an oblique T-key used in conjunction with the oblique T-key slot of the base plate is fixed in the middle of the lower end of the vernier fixing seat; the main fixing seat can be slidably installed in the sliding slot of the vernier fixing seat, and the main fixing seat and the vernier fixing seat can be slidably assembled in the T-key slot and the oblique T-key slot of the base plate respectively; during testing, the tested part is placed on the step of the L-shaped step positioning block, positioned by the angle positioning block, and clamped and fixed by the clamping mechanism, and the main fixing seat and the vernier fixing seat are pushed to make the main fixing seat close to the end of the test arm of the tested part, and the size displayed on the main scale and the vernier scale is the length of the inner end face or outer end face of the test arm.

[0005] When measuring the tested part, the tested part is placed in a manner that the outer end face or inner end face of the test arm is close to the step vertical face of the L-shaped step positioning block, and the angle positioning block is rotated to make the step vertical face of the angle positioning block close to the outer end face or inner end face of the non-test arm, and the clamping mechanism is pressed on the test arm. At this time, the intersection line of the two outer end faces or the intersection line of the two inner end faces coincides with the central axis of the fixing hole, and then the main fixing seat and the vernier fixing seat are pushed to make the main fixing seat close to the end of the test arm. At this time, the size displayed on the main scale and the vernier scale is the length of the inner end face or the outer end face of the test arm.

[0006] Further preferably, the clamping mechanism includes a fixed body and a clamping member; the fixed body is fixed on the base plate; the clamping member includes a clamping screw and an elastic clamping block, the clamping screw is threadedly tightened in a threaded hole opened in the fixed body, a handle is provided at the rear end of the clamping screw, and the front end is fixed in a slot of the elastic clamping block; or the clamping member includes a clamping square rod and an elastic clamping block, the clamping square rod can be slidably installed in a sliding hole opened in the fixed body, a clamping handle is fixed at the rear end of the clamping square rod or a clamping mechanism, such as a motor, is connected, and an elastic clamping block is fixed at the front end; the central axis of the threaded hole or the sliding hole opened in the fixed body is perpendicular to the vertical surface of the step of the L-shaped step positioning block.

[0007] Further preferably, the elastic pressing block is a rubber block.

[0008] Further preferably, the dimension measuring device further comprises an anti-slip bolt, which is tightened and fixed to the end of the T-shaped keyway away from the intersection A, so as to prevent the main fixing seat from being separated from the base plate.

[0009] Further preferably, the protruding block end face of the angle positioning block is semicircular.

[0010] Compared with the prior art, the invention has the following beneficial effects: the invention has a simple structure, is easy to manufacture, and has a low cost; it is also simple to operate, has a fast measuring speed, and has low requirements on the professional level of the measuring personnel, and is more suitable for the detection and measurement of large quantities of arc-shaped bent angle parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of a single-angle arc-shaped transition angle piece; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the base plate in the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the angle positioning block in the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the main fixing seat in the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the cursor fixing seat in the present invention; Figure 7 This is a front view of the present invention when testing the distance between the intersection lines of the two arm end faces and the two outer end faces of the angle piece; Figure 8 This is the main view of the test angle piece of the present invention when testing the distance between the end faces of the two arms and the intersection lines of the two outer end faces. DETAILED DESCRIPTION

[0012] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0013] like Figures 1 to 8As shown, this embodiment includes a base plate 1, an L-shaped step positioning block 16, an angle positioning block 7, a first fixed shaft 4, a clamping mechanism and a vernier caliper. A T-shaped keyway 3 and an oblique T-shaped keyway 2 are provided on the base plate 1. The T-shaped keyway 3 intersects the oblique T-shaped keyway 2 at an angle of 45° and the intersection A is close to one end of the base plate 1. A fixing hole 17 whose central axis intersects perpendicularly with the central axis of the bottom surface of the oblique T-shaped keyway 2 is provided on the bottom surface of the oblique T-shaped keyway 2 at one end close to the intersection A. The L-shaped step positioning block 16 and the clamping mechanism are respectively fixed (or can be integrally formed) on the base plate 1 on both sides of the oblique T-shaped keyway 2. The L-shaped step positioning block 16 is located between the T-shaped keyway 3 and the oblique T-shaped keyway 2, and the central axis of the fixing hole 17 is located on the extension surface of the vertical surface of the step of the L-shaped step positioning block 16. The angle positioning block 7 has an L-shaped step in the length direction, and one end thereof projects a protruding block 71 whose upper end face is flush with the horizontal surface 72 of the L-shaped step. The protruding block 71 has a vertical mounting hole 73 whose central axis is located on the extended surface of the vertical surface of the L-shaped step. Preferably, the end face of the protruding block 71 of the angle positioning block 7 is semicircular. The angle positioning block 7 is rotatably fixed to the base plate 1 through the first fixed shaft 4 fixed in the fixing hole 17 on the base plate 1. The vernier caliper includes a main scale and a vernier scale mounted on the main scale. The main scale includes a long strip main scale 11 and a rectangular main fixed seat 12. The main scale 11 is fixed on the upper end face of the main fixed seat 12 (or is integrally embedded in the groove of the end face of the main fixed seat) through the main scale fixed shaft 14 with the end face close to the L-shaped step positioning block 16 flush with the end face of the main fixed seat 12. The zero scale line of the main scale 11 coincides with the vertical face of the step of the L-shaped step positioning block 16. 121 is the mounting hole of the main scale fixed shaft 14 on the main fixed seat 12. The vernier scale includes a vernier scale 10 and a vernier fixed seat 13 fixing the vernier scale 10. The upper end face of the vernier fixed seat 13 has a sliding groove 131 tightly assembled with the main fixed seat 12 and slidable. A T-key 122 for use with the T-key slot 3 of the base plate 1 is extended from the lower end of the main fixed seat 12 near one end of the L-shaped step positioning block 16, and an oblique T-key 132 for use with the oblique T-key slot 2 of the base plate 1 is fixed in the middle of the lower end of the vernier fixed seat 13. The main fixed seat 12 is slidably mounted in the sliding groove of the vernier fixed seat 13, and the main fixed seat 12 and the vernier fixed seat 13 are slidably assembled in the T-key slot 3 and the oblique T-key slot 2 of the base plate 1, respectively. The vernier scale 10 is fixed to the upper end surface of the vernier fixed seat 13 (or integrally embedded in the groove on the upper end surface of the vernier fixed seat) through the vernier fixed shaft 9 to ensure that the vernier scale 10 is precisely matched with the main scale 11; 133 is the mounting hole of the vernier scale 10 on the vernier fixed seat 13.During the test, the tested part 18 is placed on the step of the L-shaped step positioning block 16, positioned by the angle positioning block 7, and fixed by the clamping mechanism. The main fixing seat 12 and the vernier fixing seat 13 are pushed to make the main fixing seat 12 close to the end of the test arm of the tested part 18. The size displayed on the main scale and the vernier scale is the length of the inner end face or outer end face of the test arm.

[0014] Preferably, the clamping mechanism includes a fixed body 6 and a clamping member. The fixed body 6 is fixed on the base plate 1. The clamping member includes a clamping screw 8 and an elastic clamping block 5. The clamping screw 8 is threadedly tightened in a threaded hole provided in the fixed body 6. The clamping screw 8 has a handle at the rear end and is fixed in a slot of the elastic clamping block 5 at the front end. Another embodiment is that the clamping member includes a clamping square rod and an elastic clamping block. The clamping square rod can be slidably installed in a sliding hole provided in the fixed body. The rear end of the clamping square rod is fixed with a clamping handle or connected with a clamping mechanism. The clamping mechanism can be a hydraulic clamping mechanism or an electric push rod. The front end of the clamping square rod is fixed with an elastic clamping block 5. The central axis of the threaded hole or sliding hole provided in the fixed body 6 is perpendicular to the vertical surface of the step of the L-shaped step positioning block 16. Preferably, the elastic clamping block is a rubber block.

[0015] Preferably, the dimension measuring device further comprises an anti-slip bolt 15 , which is tightened and fixed to an end of the T-shaped key slot 3 away from the intersection A, so as to prevent the main fixing seat 12 from being separated from the base plate 1 .

[0016] When measuring the tested part 18, if Figure 7 and Figure 8 As shown, after the tested part 18 is placed in a manner that the outer end face or inner end face of the test arm is close to the step vertical face of the L-shaped step positioning block 16, the angle positioning block 7 is rotated to make the step vertical face of the angle positioning block 7 close to the outer end face or inner end face of the non-test arm, and the clamping mechanism is pressed on the test arm. At this time, the intersection line of the two outer end faces or the intersection line of the two inner end faces coincides with the central axis of the fixing hole, and then the main fixing seat and the vernier fixing seat are pushed to make the main fixing seat close to the end of the test arm. At this time, the size displayed on the main scale and the vernier scale is the length of the inner end face or the outer end face of the test arm.

[0017] Of course, the present invention has many other embodiments. Without violating the spirit and essence of the present invention, technicians familiar with the field can make corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should be regarded as improvements of equivalent technologies and belong to the protection scope of the claims of the present invention.

Claims

1. A device for measuring the distance between the end faces of two arms of an angled piece and the axes of intersection of two inner or two outer end faces, characterized in that: The invention comprises a base plate, an L-shaped step positioning block, an angle positioning block, a first fixed axis, a clamping mechanism and a vernier caliper; the base plate is provided with a T-shaped keyway and an oblique T-shaped keyway, the T-shaped keyway intersects with the oblique T-shaped keyway at an angle of 45° and the intersection A is close to one end of the base plate; a fixing hole whose central axis intersects perpendicularly with the central axis of the bottom surface of the oblique T-shaped keyway is provided on the bottom surface of the oblique T-shaped keyway at one end close to the intersection A; the L-shaped step positioning block and the clamping mechanism are respectively fixed on or integrally formed on the base plates on both sides of the oblique T-shaped keyway; the L-shaped step positioning block is located between the T-shaped keyway and the oblique T-shaped keyway The central axis of the fixing hole is located on the extended surface of the vertical surface of the step of the L-shaped step positioning block; the angle positioning block has an L-shaped step in the length direction, and one end of the angle positioning block protrudes out with an upper end surface flush with the horizontal surface of the L-shaped step, and the protruding block is provided with a vertical mounting hole whose central axis is located on the extended surface of the vertical surface of the L-shaped step; the angle positioning block is rotatably fixed to the base plate by a first fixed shaft fixed in the fixing hole of the base plate; the vernier caliper includes a main scale and a vernier scale installed on the main scale; the main scale includes a long strip main scale and a rectangular main fixed scale The main scale is fixed on the upper end face of the main fixed seat with the end face close to the L-shaped step positioning block flush with the end face of the main fixed seat or is integrally embedded in the groove of the end face of the main fixed seat, and the zero scale line of the main scale coincides with the vertical surface of the step of the L-shaped step positioning block; the vernier scale includes a vernier scale and a vernier fixed seat for fixing the vernier scale, and the upper end face of the vernier fixed seat has a sliding groove that is tightly assembled with the main fixed seat and can slide; the lower end of the main fixed seat close to one end of the L-shaped step positioning block extends out a T-key used in conjunction with the T-key slot of the base plate, and the lower end of the vernier fixed seat An oblique T-key matched with the oblique T-keyway of the base plate is fixed in the middle; the main fixing seat can be slidably installed in the sliding groove of the vernier fixing seat, and the main fixing seat and the vernier fixing seat can be slidably assembled in the T-keyway and the oblique T-keyway of the base plate respectively; during testing, the tested part is placed on the step of the L-shaped step positioning block, positioned by the angle positioning block, and fixed by the clamping mechanism, and the main fixing seat and the vernier fixing seat are pushed to make the main fixing seat close to the end of the test arm of the tested part, and the size displayed on the main scale and the vernier scale is the length of the inner end face or outer end face of the test arm.

2. The device for measuring the distance between the end faces of two arms of an angle piece and the axes of intersection of two inner or two outer end faces according to claim 1, characterized in that: The clamping mechanism includes a fixed body and a clamping piece; the fixed body is fixed on a base plate; the clamping piece includes a clamping screw and an elastic clamping block, the clamping screw is threadedly tightened in a threaded hole opened in the fixed body, a handle is provided at the rear end of the clamping screw, and the front end is fixed in a slot of the elastic clamping block; or the clamping piece includes a clamping square rod and an elastic clamping block, the clamping square rod can be slidably installed in a sliding hole opened in the fixed body, a clamping handle is fixed at the rear end of the clamping square rod or a clamping mechanism is connected, and an elastic clamping block is fixed at the front end; the central axis of the threaded hole or the sliding hole opened in the fixed body is perpendicular to the vertical surface of the step of the L-shaped step positioning block.

3. The device for measuring the distance between the end faces of two arms of an angled piece and the axes of intersection of two inner or two outer end faces according to claim 2, characterized in that: The elastic pressing block is a rubber block.

4. The device for measuring the distance between the end faces of two arms of an angled piece and the axes of intersection of two inner or two outer end faces according to claim 1, 2 or 3, characterized in that: The dimension measuring device also includes an anti-slip bolt, which is tightened and fixed on the end of the T-shaped keyway away from the intersection A.

5. The device for measuring the distance between the end faces of two arms of an angled piece and the axes of intersection of two inner or two outer end faces according to claim 4, characterized in that: The protruding block end surface of the angle positioning block is semicircular.

6. The device for measuring the distance between the end faces of two arms of an angled piece and the axes of intersection of two inner or two outer end faces according to claim 1, 2 or 3, characterized in that: The protruding block end surface of the angle positioning block is semicircular.

Images