Elastic self-centering pressing device

Abstract

The utility model belongs to the technical field of tools, and particularly relates to an elastic self-centering pressing device. Comprising a clamp body, a plug pin, a pin sleeve, a side positioning plate, a hexagon socket head cap screw, a slope centering pin, a center pin sleeve, a screw A, a compression spring, a screw B, a supporting block, a pressing plate A, a nut A, a bolt, an adjusting rod and a nut B. The clamp body is rectangular, and a threaded hole and a center hole are formed in the upper end face of the clamp body. A side positioning plate, a hexagon socket head cap screw, an inclined surface centering pin, a central pin sleeve, a screw A, a supporting block, a bolt and an adjusting rod are mounted on the mounting base; the elastic self-centering pressing device is simple in structure, low in cost and easy to operate, parts can be self-centered in the machining process, the problem that the time for metering and alignment is long in the part machining process is solved, and the machining efficiency and the yield of the parts are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to tool frock technical field, concretely relates to a kind of elastic self-centering pressing device. BACKGROUND

[0002] The existing part is cylindrical, and has a deep cavity and a shallow cavity respectively inside, and has two blind holes respectively at the center position, and has eight side holes at the circumference of the part, and the side hole position has angular position relationship with the hole on the end face of the part, so that the part needs to be aligned during processing to ensure that the position relationship of each hole system after processing is correct. It takes a long time to align the part before processing, and the three-coordinate detection data of the position relationship of each hole after processing has a low qualified rate. In view of this problem, an elastic self-centering pressing device is urgently needed to solve the problem of the correctness of the position of each hole after part processing, and to improve the processing efficiency and yield of the part. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at solving the above-mentioned problems, and proposes an elastic self-centering pressing device.

[0004] The utility model aims at solving the above-mentioned problems, and proposes an elastic self-centering pressing device.

[0005] The utility model provides an elastic self-centering compression device, including clamp body, bolt, pin sleeve, side positioning plate, internal hexagonal cylinder screw, inclined surface centering pin, center pin sleeve, screw A, compression spring, screw B, support block, pressing plate A, nut A, bolt, adjusting rod, nut B, the appearance of clamp body is rectangle, there is threaded hole and center hole on the upper end surface of clamp body, is used for installing side positioning plate, internal hexagonal cylinder screw, inclined surface centering pin, center pin sleeve, screw A, support block, bolt and adjusting rod to it, the bolt is ladder cylindrical, the big cylinder of bolt one end is handheld position, the middle cylinder position is connected with pin sleeve, and the other end small cylinder is connected with the positioning hole of the processed part, the internal hexagonal cylinder screw is installed in the two holes of side positioning plate upper end, is connected with clamp body, the center pin sleeve is installed in the center hole of clamp body, screw A passes through the small hole of inclined surface centering pin taper upper end surface, compression spring is installed on the threaded cylinder of screw A, after three parts combination, it is installed in the inner hole of center pin sleeve, side positioning plate is installed on the non-three equal division threaded hole of clamp body, is fixed on the upper end surface of clamp body through internal hexagonal cylinder screw, pin sleeve is installed in the inner hole of side positioning plate upper end, bolt is installed in the inner hole of pin sleeve, support block has three appearances of rectangle, three support blocks are installed on the first, second division circle of three equal division threaded hole of clamp body respectively, are fixed through screw B, three bolts are installed on the third division circle of three equal division threaded hole of clamp body, three adjusting rods are installed on the fourth division circle of three equal division threaded hole of clamp body, installs pressing plate A on bolt and adjusting rod, bolt passes through the waist-shaped through -hole of pressing plate A, the end of adjusting rod without thread is on the long groove plane of pressing plate A, nut A is screwed on the threaded upper end of bolt.

[0006] Further, the side positioning plate is T-shaped, two light holes are designed at the ends of the horizontal line of the T-shaped, a center hole is designed at the horizontal line of the T-shaped for connecting the pin sleeve.

[0007] Further, the inclined surface centering pin is conical at one end and cylindrical at the other end, and the center is a stepped circular through-hole. The conical surface of the inclined surface centering pin cooperates with the inner diameter of the processed part to self-center the part, the cylindrical end of the inclined surface centering pin is connected with the center pin sleeve, the center hole of the inclined surface centering pin is installed with the screw A and the compression spring, the inclined surface centering pin adjusts the clamping position of the part by compressing the compression spring, the compression spring is circular in cross-section and is installed in the large inner hole of the inclined surface centering pin, which plays a supporting and adjusting gap role.

[0008] Further, the center pin sleeve is a circular sleeve, the outer diameter of the center pin sleeve cooperates with the inner hole of the clamp body, and the two are interference fit, the inner diameter of the center pin sleeve cooperates with the outer diameter of the centering pin 6, and the two are clearance fit, the centering pin 6 moves axially in the center pin sleeve to guide.

[0009] Further, the pressing plate A is rectangular in shape, a waist-shaped long hole is arranged at the center of one end of the pressing plate A, a bolt is arranged in the waist-shaped long hole, and a rectangular long slot is arranged on the lower end face of the other end of the pressing plate A, and the one end face of the adjusting rod is arranged on the upper plane of the rectangular long slot.

[0010] Further, the bolt is cylindrical in shape, and the two ends are threaded, one end is connected with the clamp body, and the other end is connected with the pressing plate A and the nut A.

[0011] Further, the adjusting rod is cylindrical in shape, one end is threaded and connected with the clamp body, a thickened cylindrical knob is arranged at the middle position of the adjusting rod, which facilitates the rotation of the adjusting rod and the installation of the adjusting rod in the thread of the clamp body, and the other end of the adjusting rod 1 is not threaded, and the upper end face is in contact with the lower end face of the rectangular long slot in the pressing plate A, so that the pressing plate A is provided with a downward force when the nut A is screwed, and the adjusting rod plays a supporting role at this time.

[0012] Further, the nut A is an outer hexagonal nut, which is used to be installed on the external thread exposed on the upper end of the bolt after being connected with the pressing plate A.

[0013] Further, the nut B is an outer hexagonal nut, which is installed on the external thread of the adjusting rod.

[0014] Compared with the existing machining method, the beneficial effects of the utility model

[0015] The elastic self-centering pressing device is simple in structure, low in cost, easy to operate, can make the parts self-centering during machining, solves the problem of long time of dialing and aligning during part machining, and improves the machining efficiency and the yield of the parts. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view of the utility model;

[0017] Figure 2 It is Figure 1 a top view;

[0018] In the figure, 1 is a clamp body, 2 is a bolt, 3 is a pin sleeve, 4 is a side positioning plate, 5 is an inner hexagonal cylindrical screw, 6 is an inclined surface centering pin, 7 is a center pin sleeve, 8 is a screw A, 9 is a compression spring, 10 is a screw B, 11 is a supporting block, 12 is a pressing plate A, 13 is a nut A, 14 is a bolt, 15 is an adjusting rod, and 16 is a nut B. DETAILED DESCRIPTION

[0019] The utility model will be further described below in combination with the drawings and specific embodiments.

[0020] Embodiment 1

[0021] As Figure 1As shown, the utility model provides a kind of elastic self-centering pressing device, including fixture body 1, latch 2, pin sleeve 3, side locating plate 4, inner hexagonal cylindrical screw 5, inclined centering pin 6, center pin sleeve 7, screw A 8, compression spring 9, screw B 10, support block 11, pressing plate A 12, nut A 13, bolt 14, adjusting rod 15, nut B 16;

[0022] Fixture body 1 is rectangular in shape, and there are 14 threaded holes and a center hole on the upper end face of fixture body 1, for installing side locating plate 4, inner hexagonal cylindrical screw 5, inclined centering pin 6, center pin sleeve 7, screw A 8, support block 11, bolt 14 and adjusting rod 15 thereon.

[0023] Latch 2 is a stepped cylinder, and the large cylinder at one end of latch 2 is a hand-holding position, and the outer cylinder is designed with knurling to increase friction, the middle cylinder position of latch 2 is connected with pin sleeve 3, and the small cylinder at the other end of latch 2 is connected with the positioning hole of the machined part.

[0024] Pin sleeve 3 is a circular sleeve shape, one end of pin sleeve 3 has a circular boss, which plays an axial positioning role when installed in the inner hole of side locating plate 4, and the outer diameter at the other end matches the inner hole of side locating plate 4, and the taper ensures the accuracy of installation, and the inner diameter of pin sleeve 3 is used to install latch 2.

[0025] Side locating plate 4 is T-shaped in shape, and two light holes are designed at the ends of the horizontal line position of the T shape, which are installed on the upper end face of fixture body 1 by inner hexagonal cylindrical screw 5, and a center hole is designed at the horizontal line position of the T shape for connecting pin sleeve 3.

[0026] Inner hexagonal cylindrical screw 5 is installed in the two holes at the upper end of side locating plate 4 and connected with fixture body 1.

[0027] One end of inclined centering pin 6 is a conical surface, the other end is a cylindrical shape, and the center is a stepped circular through hole. The conical surface of inclined centering pin 6 matches the inner diameter of the machined part, so that the part is self-centered, the cylindrical end of inclined centering pin 6 is connected with center pin sleeve 7, screw A 8 and compression spring 9 are installed in the center hole of inclined centering pin 6, and the clamping position of the part is adjusted by pressing compression spring 9.

[0028] Center pin sleeve 7 is a circular sleeve shape, the outer diameter of center pin sleeve 7 matches the inner hole of fixture body 1, and the two are interference fit, the inner diameter of center pin sleeve 7 matches the outer diameter of centering pin 6, and the two are clearance fit, and centering pin 6 moves axially in center pin sleeve 7 to play a guiding role.

[0029] Screw A 8 is used to install compression spring 9 into inclined centering pin 6 and connect with fixture body 1.

[0030] Compression spring 9 is circular in cross section, installed in the large hole of the inclined centering pin 6, to support stable, adjust the gap.

[0031] Screw B10 has three parts, used to connect the support block 11 and the fixture body 1.

[0032] Support block 11 is rectangular in shape, with three. The upper end of the wide surface of the support block 11 is designed with a through hole, which is installed in the through hole and connected with the fixture body 1 through the screw B10, and the three support blocks 11 are fixed in the corresponding position.

[0033] The pressing plate A12 is rectangular in shape, and the center of one end of the pressing plate A12 is designed with a waist-shaped long hole, and the bolt 14 is installed in the waist-shaped long hole. The other end of the lower end surface is designed with a rectangular long slot, and the one end surface of the adjusting rod 15 is on the upper plane of the rectangular long slot.

[0034] Nut A13 is an outer hexagonal nut, used to install on the exposed outer thread at the upper end after the bolt 14 and the pressing plate A12 are connected.

[0035] Bolt 14 is cylindrical, both ends are threaded, one end is connected with the fixture body 1, and the other end is connected with the pressing plate A12 and the nut A13.

[0036] Adjusting rod 15 is cylindrical, one end is threaded, connected with the fixture body 1, and the middle of the adjusting rod 15 is designed with a thickened cylindrical with knurling, which is convenient for rotating the adjusting rod 15 and installing it in the thread of the fixture body 1. The other end of the adjusting rod 1 is not threaded, and the upper end surface is in contact with the lower end surface of the rectangular long slot in the pressing plate A12, giving the pressing plate A12 a downward force when the nut A13 is screwed, and the adjusting rod 15 plays a supporting role at this time.

[0037] Nut B16 is an outer hexagonal nut, installed on the outer thread of the adjusting rod 15, to enhance the fixation and stability.

[0038] Connection relationship: the center pin sleeve 7 is installed into the center hole of the clamp body 1, the screw A8 is passed through the small hole of the conical upper end surface of the inclined centering pin 6, the compression spring 9 is installed onto the threaded cylinder of the screw A8, the three parts are combined, and then the three parts are installed into the inner hole of the center pin sleeve 7, the side positioning plate 4 is installed onto the non-three-equal-threaded hole of the clamp body 1, and the side positioning plate 4 is fixed to the clamp body 1 through the two inner hexagonal cylindrical screws 5, the pin sleeve 3 is installed into the inner hole of the upper end of the side positioning plate 4, the pin 2 is installed into the inner hole of the pin sleeve 3, the three supporting blocks 11 are respectively placed onto the first and second index circles of the three-equal-threaded holes of the clamp body 1, and the three supporting blocks 11 are fixed through the six screws B10, the three bolts 14 are installed onto the third index circle of the three-equal-threaded holes of the clamp body 1, the three adjusting rods 15 are installed onto the fourth index circle of the three-equal-threaded holes of the clamp body 1, the pressing plate A12 is installed onto the bolts 14 and the adjusting rods 15, the bolts 14 pass through the waist-shaped through holes of the pressing plate A12, the non-threaded end of the adjusting rod 15 is in abutment against the long-groove plane of the pressing plate A12, and the nuts A13 are screwed onto the threaded upper ends of the bolts 14.

[0039] The elastic self-centering pressing device uses the method that the machined part is placed above the conical surface of the inclined centering pin 6, the inner hole of the machined part is installed above the conical surface of the inclined centering pin 6, a downward force is applied to the part, the lower end surface of the part is in contact with the upper planes of the three supporting blocks 11, the pin 2 is inserted into the hole on the circumference of the part, the part is radially positioned, the position relationship between the holes in the end surface of the part and the holes on the circumference is ensured to be correct during machining, at this time, the height positions of the three pressing plates A12 are adjusted by screwing the adjusting rods 15 and the bolts 14, after the height positions are adjusted, the three nuts A13 are screwed onto the three bolts 14, the three pressing plates A12 are pressed, the pressing force of the three pressing plates A12 is applied to the upper plane of the machined part, and the part is clamped.

Claims

1. An elastic self-centering compression device, comprising a clamp body (1), a latch (2), a pin sleeve (3), a side positioning plate (4), an inner hexagonal cylindrical screw (5), a beveled centering pin (6), a center pin sleeve (7), a screw A (8), a compression spring (9), a screw B (10), a support block (11), a pressing plate A (12), a nut A (13), a bolt (14), an adjusting rod (15), a nut B (16), characterized in that, The fixture body (1) is rectangular in shape, and has threaded holes and a central hole on the upper end surface of the fixture body (1) for mounting the side positioning plate (4), the inner hexagonal cylindrical screw (5), the inclined centering pin (6), the center pin sleeve (7), the screw A (8), the support block (11), the bolt (14) and the adjusting rod (15) thereon; the latch (2) is a stepped cylindrical shape, the large cylinder at one end of the latch (2) is a hand holding position, the middle cylinder position is connected with the pin sleeve (3), and the small cylinder at the other end is connected with the positioning hole of the machined part; the inner hexagonal cylindrical screw (5) is installed in the two holes at the upper end of the side positioning plate (4) and is connected with the fixture body (1); the center pin sleeve (7) is installed in the central hole of the fixture body (1), the screw A (8) passes through the small hole in the tapered upper end surface of the inclined centering pin (6), the compression spring (9) is installed on the threaded cylinder of the screw A (8), and after the three parts are combined, they are installed in the inner hole of the center pin sleeve (7); the side positioning plate (4) is installed on the non-three-equal-threaded holes of the fixture body (1), and is fixed on the upper end surface of the fixture body (1) by the inner hexagonal cylindrical screw (5); the pin sleeve (3) is installed in the inner hole at the upper end of the side positioning plate (4), the latch (2) is installed in the inner hole of the pin sleeve (3), the support block (11) has three rectangular shapes, the three support blocks (11) are respectively installed on the first and second indexing circles of the three-equal-threaded holes of the fixture body (1) and are fixed by the screw B (10), the three bolts (14) are installed on the third indexing circle of the three-equal-threaded holes of the fixture body (1), the three adjusting rods (15) are installed on the fourth indexing circle of the three-equal-threaded holes of the fixture body (1), the pressing plate A (12) is installed on the bolts (14) and the adjusting rods (15), the bolt (14) passes through the waist-shaped through hole of the pressing plate A (12), the non-threaded end of the adjusting rod (15) abuts against the long groove plane of the pressing plate A (12), and the nut A (13) is screwed on the threaded upper end of the bolt (14).

2. An elastic self-centering compression device according to claim 1, characterized in that The side positioning plate (4) is T-shaped, two light holes are designed at the positions of the two ends of the horizontal line of the T shape, and a central hole is designed at the position of the horizontal line of the T shape for connecting the pin sleeve (3).

3. An elastic self-centering compression device according to claim 1, characterized in that The inclined centering pin (6) has a conical surface at one end and a cylindrical shape at the other end, and a stepped circular through hole in the center; the conical surface of the inclined centering pin (6) is matched with the inner diameter of the machined part, so that the part is self-centered; the cylindrical end of the inclined centering pin (6) is connected with the center pin sleeve (7); the central hole of the inclined centering pin (6) is installed with the screw A (8) and the compression spring (9); the inclined centering pin (6) adjusts the clamping position of the part by compressing the compression spring (9); the compression spring (9) is circular in cross section and is installed in the large inner hole of the inclined centering pin (6), and plays a role in supporting stability and adjusting the gap.

4. A resilient self-centering compression device according to claim 1, wherein, The center pin sleeve (7) is a circular sleeve shape, the outer diameter of the center pin sleeve (7) matches the inner hole of the clamp body (1), both are interference fit, the inner diameter of the center pin sleeve (7) matches the outer diameter of the centering pin (6), both are clearance fit, the centering pin (6) moves axially in the center pin sleeve (7), which plays a guiding role.

5. A resilient self-centering compression device according to claim 1, wherein, The pressing plate A (12) is rectangular in shape, a waist-shaped long hole is designed at the center of one end of the pressing plate A (12), the bolt (14) is installed in the waist-shaped long hole, and a rectangular long slot is designed on the lower end face of the other end.

6. An elastic self-centering compression device according to claim 1, characterized in that The bolt (14) is cylindrical, both ends are threaded, one end is connected with the clamp body (1), and the other end is connected with the pressing plate A (12) and the nut A (13).

7. A resilient self-centering compression device according to claim 1, wherein, The adjusting rod (15) is cylindrical, one end is threaded and connected with the clamp body (1), a thickened knurled cylinder is designed at the middle position of the adjusting rod (15), which facilitates the rotation of the adjusting rod (15) and its installation in the thread of the clamp body (1), the other end of the adjusting rod (15) is not threaded, the upper end face is in contact with the lower end face of the rectangular long slot in the pressing plate A (12), and a downward force is applied to the pressing plate A (12) when the nut A (13) is screwed, at this time the adjusting rod (15) plays a supporting role.

8. A resilient self-centering compression device according to claim 1, wherein, The nut A (13) is an outer hexagonal nut, which is used to install on the exposed outer thread of the bolt (14) and the pressing plate A (12) after connection.

9. A resilient self-centering compression device according to claim 1, wherein, The nut B (16) is an outer hexagonal nut, which is installed on the outer thread of the adjusting rod (15).

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