Flexible combined type connecting and clamping device

Abstract

The utility model relates to the technical field of machining, in particular to a flexible combined type connecting and clamping device which comprises an annular base, annular supporting pieces and annular limiting seats are sequentially arranged on the two sides of the annular base respectively, and the annular base, the annular supporting pieces and the annular limiting seats are arranged in a stacked mode. The annular base and the annular supporting piece are detachably connected through a first clamp, and the annular supporting piece and the annular limiting base are detachably connected through a second clamp. Compared with the prior art, the clamping device is reasonable in structure and can adapt to machining application of shaft tooth type workpieces with different diameters, the appropriate annular base, the appropriate annular supporting piece and the appropriate annular limiting base are selected to be assembled through the bolts and the nuts according to the lengths of the workpieces, and therefore the clamping device suitable for the radial length is obtained; the fixture is used for improving the adaptability of long and short workpieces, avoids purchasing fixtures of different models, greatly reduces the cost, greatly improves the connection reliability of the axial workpiece and the ejector pin through the cooperation of the annular clamp and the locking bolt, is high in centering precision, and guarantees the machining precision.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a flexible combined connection clamping device. Background Art

[0002] In the field of mechanical processing, the process of positioning and clamping a workpiece on a machine tool or in a fixture is called clamping. Clamping is further divided into positioning and clamping. Positioning refers to the process of determining the correct position of a workpiece on a machine tool or in a fixture; clamping refers to the operation of fixing the workpiece after positioning it so that it remains in the same position during the processing. Figure 7 It includes a spindle 1, which has a central axis positioning hole through it. The tail of the workpiece 6 is centered by the top 3, which can slide in the thrust sleeve 2. The pin 10 installed on the thrust sleeve 2 slides in the groove 11 of the top 3. The stroke of the top 3 is determined by the length of its own groove 11. At the same time, the pin 10 can prevent the top from rotating. There is a spring 12 at the tail of the top 3, which presses on the head of the rod 5. The rod 5 and the tail of the pull rod 4 are fastened together, so that the force of the top 3 pressing on the center hole at the tail of the workpiece 6 is provided by the spring 12.

[0003] However, the process of clamping the workpiece has the following shortcomings: due to the consideration of adaptability to workpieces of different diameters, the diameter of the inner hole of the thrust sleeve is larger than that of the workpiece. When the diameter of the workpiece is small, it is difficult to align the center; there is relative sliding between the center and the thrust sleeve, and the fit between the thrust sleeve and the spindle is also a clearance fit, resulting in poor coaxiality between the center and the spindle, seriously affecting the centering accuracy; when the workpiece is short, the center has to extend a long distance to support the tail of the workpiece. At this time, the stress-intensive part of the center is far away from the part that cooperates with the thrust sleeve, and the centering accuracy is reduced, and the adaptability to long and short workpieces is insufficient. Utility Model Content

[0004] In order to overcome the shortcomings of the above technical defects, the utility model provides a flexible combined connection clamping device, which makes the alignment of the workpiece and the top convenient, has good centering accuracy, ensures the processing accuracy, and has good adaptability to the length of shaft parts.

[0005] The technical solution adopted by the utility model is as follows: a flexible combined connection clamping device, the key lies in: comprising an annular base, an annular support sheet and an annular limit seat are sequentially arranged on both sides of the annular base, the annular base, the annular support sheet and the annular limit seat are stacked, the annular base and the annular support sheet are detachably connected through a first clamp, and the annular support sheet and the annular limit seat are detachably connected through a second clamp. The clamping device is detachably assembled into the annular base, the annular support sheet and the annular limit seat, and the centers of the annular base, the annular support sheet and the annular limit seat are penetrated to form a workpiece installation channel. When in use, the rear end of the clamping device is used to install to the top of the machine tool, and the workpiece is inserted into the workpiece installation channel to cooperate with the top.

[0006] Furthermore, a plurality of lugs are evenly distributed on the outer peripheral surface of the annular base, and a first connecting hole is formed on the lugs. In a preferred embodiment, there are three lugs, and the angle between adjacent lugs is 120°.

[0007] Furthermore, the outer circumferential surface of the annular support sheet is evenly distributed with multiple groups of through holes, each group of through holes includes two second connection holes arranged adjacent to each other, and the multiple second connection holes are located on the same circumference. In a preferred embodiment, there are six second connection holes, and the six second connection holes form three groups of through holes, and the angle between adjacent through hole groups is 120°.

[0008] Further, the annular limit seat includes a base portion and a protrusion, the protrusion is located at the center of the base portion, a mounting through hole is provided on the protrusion, a fastener is sleeved on the protrusion, and a plurality of third connection holes are evenly provided on the base portion, and the plurality of third connection holes are located on the same circumference. In a preferred solution, there are three third connection holes, and the angle between adjacent third connection holes is 120°.

[0009] Further, the base portion includes an annular seat and a plurality of fan-shaped seats, the protrusion is fixedly connected to the inner ring wall of the annular seat, the fan-shaped seat is fixedly connected to the outer ring wall of the annular seat, and the fan-shaped seats are arranged in a one-to-one correspondence with the third connecting holes. In a preferred solution, there are three fan-shaped seats, and the third connecting hole is arranged close to one side of the fan-shaped seat.

[0010] Furthermore, the hole wall of the mounting through hole is axially provided with a plurality of adjustment grooves, and the fastener comprises an annular clamp, and the two ends of the annular clamp are threadedly connected with the same locking bolt. With this solution, the workpiece / top inserted into the mounting through hole can be conveniently fixed by rotating the fastening bolt.

[0011] Furthermore, the first clamp includes a first bolt and a first nut, and the first bolt passes through the annular base and the annular support sheet in sequence and is threadedly connected to the first nut. With this solution, the annular base and the annular support sheet can be conveniently assembled and disassembled by using the first bolt and the first nut in combination.

[0012] Furthermore, the second clamp includes a second bolt and a second nut, and the second bolt passes through the annular support sheet and the annular limit seat in sequence and is threadedly connected to the second nut. With this solution, the annular limit seat and the annular support sheet can be conveniently assembled and disassembled by using the second bolt and the second nut in combination.

[0013] Furthermore, the axis lines of the annular base, the annular support sheet and the annular limit seat coincide with each other. This solution can improve the installation stability of the workpiece.

[0014] Beneficial effects: The utility model provides a flexible combined connection clamping device with a reasonable structure, which can adapt to workpieces of different diameters. According to the length of the workpiece, a suitable annular base, annular support plate and annular limit seat are selected for assembly through bolts and nuts to obtain a clamping device suitable for the radial length, which is used to improve the adaptability of long and short workpieces, avoid the purchase of different types of clamps, and greatly reduce costs. The connection between the axial workpiece and the ejector pin is greatly improved through the cooperation of the annular clamp and the locking bolt, and the centering accuracy is high, which ensures the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the exploded structure of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the annular base;

[0018] Figure 4 is a schematic diagram of the structure of the annular support sheet;

[0019] Figure 5 It is a structural schematic diagram of the annular limit seat;

[0020] Figure 6 is a schematic diagram of the structure of a fastener;

[0021] Figure 7 It is a schematic diagram of the structure of the existing clamping structure of shaft parts. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the utility model. It should be noted that all directional indications in the embodiments of the utility model (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the descriptions of "first", "second", etc. in the utility model are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0023] See also Figure 1 A flexible combined connection clamping device is provided in one embodiment of the utility model, comprising an annular base 1, an annular support sheet 2 and an annular limit seat 3 are sequentially arranged on both sides of the annular base 1, the annular base 1, the annular support sheet 2 and the annular limit seat 3 are stacked, the annular base 1 and the annular support sheet 2 are detachably connected by a first clamp 4, and the annular support sheet 2 and the annular limit seat 3 are detachably connected by a second clamp 5; the clamping device is detachably assembled through the annular base 1, the annular support sheet 2 and the annular limit seat 3, and the centers of the annular base 1, the annular support sheet 2 and the annular limit seat 3 are penetrated to form a workpiece mounting channel. When in use, the rear end of the clamping device is used to be installed to the top of the machine tool, and the workpiece is inserted into the workpiece mounting channel to cooperate with the top.

[0024] In a specific embodiment, a plurality of lugs 11 are evenly distributed on the outer peripheral surface of the annular base 1, and a first connecting hole 12 is formed on the lug 11. In a preferred solution, there are three lugs, and the angle between adjacent lugs is 120°.

[0025] In a specific embodiment, the outer circumferential surface of the annular support sheet 2 is evenly distributed with multiple groups of through holes, each group of through holes includes two adjacent second connection holes 21, and the multiple second connection holes 21 are located on the same circumference. In a preferred embodiment, there are six second connection holes, and the six second connection holes form three groups of through holes, and the angle between adjacent through hole groups is 120°.

[0026] In a specific embodiment, the annular limit seat 3 includes a base portion 31 and a protruding portion 32, the protruding portion 32 is located at the center of the base portion 31, a mounting through hole 33 is provided on the protruding portion 32, a fastener 6 is sleeved on the protruding portion 32, and a plurality of third connection holes 34 are evenly provided on the base portion 31, and the plurality of third connection holes 34 are located on the same circumference. In a preferred embodiment, there are three third connection holes, and the angle between adjacent third connection holes is 120°.

[0027] In a specific embodiment, the base portion 31 includes an annular seat 311 and a plurality of fan-shaped seats 312, the protrusion 32 is fixedly connected to the inner ring wall of the annular seat 311, the fan-shaped seat 312 is fixedly connected to the outer ring wall of the annular seat 311, and the fan-shaped seats 312 are arranged in a one-to-one correspondence with the third connection holes 34. In a preferred solution, there are three fan-shaped seats, and the third connection hole is arranged close to one side of the fan-shaped seat.

[0028] In a specific embodiment, a plurality of adjustment grooves 331 are axially provided on the hole wall of the mounting through hole 33, and the fastener 6 includes an annular clamp, and the two ends of the annular clamp 61 are threadedly connected with the same locking bolt 62; by rotating the fastening bolt, the workpiece / top inserted into the mounting through hole can be conveniently fixed.

[0029] In a specific embodiment, the first clamp 4 includes a first bolt 41 and a first nut 42, and the first bolt 41 passes through the annular base 1 and the annular support plate 2 in sequence and is threadedly connected to the first nut 42; the first bolt and the first nut can be used in combination to conveniently assemble and disassemble the annular base 1 and the annular support plate 2.

[0030] In a specific embodiment, the second clamp 5 includes a second bolt 51 and a second nut 52, and the second bolt 51 passes through the annular support plate 2 and the annular limit seat 3 in sequence and is threadedly connected to the second nut 52; by using the second bolt and the second nut in combination, the annular limit seat 3 and the annular support plate 2 can be conveniently assembled and disassembled.

[0031] In a specific embodiment, the axis lines of the annular base 1, the annular support sheet 2 and the annular limit seat 3 coincide with each other; after being assembled into a connection clamping device, the installation stability of the workpiece can be improved.

[0032] The present invention is further described below in conjunction with a specific application scenario:

[0033] A flexible combined connection clamping device comprises an annular base 1, an annular support sheet 2 and an annular limit seat 3 are sequentially arranged on both sides of the annular base 1, the annular support sheet 2 and the annular limit seat 3 are stacked, and the axial center lines of the annular base 1, the annular support sheet 2 and the annular limit seat 3 coincide, the outer peripheral surface of the annular base 1 is evenly distributed with three lugs 11, the angle between adjacent lugs is 120°, the lugs 11 are provided with first connecting holes 12, the outer peripheral surface of the annular support sheet 2 is evenly distributed with three groups of through holes, each group of through holes comprises two adjacently arranged second connecting holes 21, six of the second connecting holes 21 are located on the same circumference, the angle between adjacent through hole groups is 120°, and the first bolt 41 passes through the first connecting hole 12 and the second connecting hole 21 in sequence, and is threadedly connected with the first nut 42 to realize the detachable connection between the annular base 1 and the annular support sheet 2;

[0034] The annular limit seat 3 includes a base portion 31 and a protrusion 32, wherein the protrusion 32 is located at the center of the base portion 31, a mounting through hole 33 is provided on the protrusion 32, a plurality of adjustment grooves 331 are axially provided on the hole wall of the mounting through hole 33, a fastener 6 is sleeved on the protrusion 32, and the fastener 6 includes an annular clamp, and the same locking bolt 62 is threadedly connected at both ends of the annular clamp 61, the base portion 31 includes an annular seat 311 and three sector seats 312, the protrusion 32 is fixedly connected to the inner ring wall of the annular seat 311, and the sector seat 312 is fixedly connected to the outer ring wall of the annular seat 311, and each of the sector seats 312 is provided with a third connecting hole 34, the third connecting hole is arranged close to one side of the sector seat, and the angle between adjacent third connecting holes is 120° The three third connecting holes 34 are located on the same circumference. After the second bolt 51 passes through the second connecting hole 21 and the third connecting hole 34 in sequence, it is threadedly connected with the second nut 52 to realize the detachable connection between the annular support plate 2 and the annular limit seat 3; the axial center lines of the annular base 1, the annular support plate 2 and the annular limit seat 3 coincide, and the centers of the annular base 1, the annular support plate 2 and the annular limit seat 3 pass through to form a workpiece mounting channel. When in use, the top is inserted into one end of the workpiece mounting channel, and after adjusting the mounting position, the flexible combined connection clamping device is fixed to the top through an annular clamp; then the axial workpiece is inserted into the other end of the workpiece mounting channel, and after the workpiece and the top are matched and tightened, the flexible combined connection clamping device is fixed to the workpiece through an annular clamp, which greatly improves the connection stability between the axial workpiece and the ejector pin.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, technicians in this field can make a variety of similar expressions without violating the purpose and claims of the present invention. Such changes all fall within the protection scope of the present invention.

Claims

1. A flexible combined connection clamping device, characterized in that: The invention comprises an annular base (1), an annular support sheet (2) and an annular limit seat (3) are sequentially arranged on both sides of the annular base (1), the annular support sheet (2) and the annular limit seat (3) are stacked, the annular base (1) and the annular support sheet (2) are detachably connected via a first clamp (4), and the annular support sheet (2) and the annular limit seat (3) are detachably connected via a second clamp (5).

2. A flexible combined connection clamping device according to claim 1, characterized in that: A plurality of lugs (11) are evenly distributed on the outer peripheral surface of the annular base (1), and a first connecting hole (12) is provided on the lug (11).

3. A flexible combined connection clamping device according to claim 1, characterized in that: The outer circumferential surface of the annular support sheet (2) is evenly distributed with a plurality of groups of through holes, each group of through holes comprises two second connection holes (21) arranged adjacent to each other, and the plurality of second connection holes (21) are located on the same circumference.

4. A flexible combined connection clamping device according to claim 1, characterized in that: The annular limit seat (3) comprises a base portion (31) and a protruding portion (32), wherein the protruding portion (32) is located at the center of the base portion (31), a mounting through hole (33) is provided on the protruding portion (32), a fastener (6) is sleeved on the protruding portion (32), and a plurality of third connecting holes (34) are evenly provided on the base portion (31).

5. A flexible combined connection clamping device according to claim 4, characterized in that: The base portion (31) comprises an annular seat (311) and a plurality of sector seats (312); the protruding portion (32) is fixedly connected to the inner ring wall of the annular seat (311); the sector seats (312) are fixedly connected to the outer ring wall of the annular seat (311); and the sector seats (312) and the third connecting holes (34) are arranged in a one-to-one correspondence.

6. A flexible combined connection clamping device according to claim 4, characterized in that: The hole wall of the mounting through hole (33) is axially provided with a plurality of adjustment grooves (331), and the fastener (6) comprises an annular clamp (61), and the two ends of the annular clamp (61) are threadedly connected with the same locking bolt (62).

7. A flexible combined connection clamping device according to any one of claims 2 to 6, characterized in that: The first clamp (4) comprises a first bolt (41) and a first nut (42), wherein the first bolt (41) passes through the annular base (1) and the annular support sheet (2) in sequence and is threadedly connected to the first nut (42).

8. A flexible combined connection clamping device according to any one of claims 2 to 6, characterized in that: The second clamp (5) comprises a second bolt (51) and a second nut (52), and the second bolt (51) passes through the annular support plate (2) and the annular limiting seat (3) in sequence and is threadedly connected to the second nut (52).

9. A flexible combined connection clamping device according to any one of claims 2 to 6, characterized in that: The axis centers of the annular base (1), the annular support sheet (2) and the annular limiting seat (3) coincide with each other.

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