Clamping device for horizontal turning of column piece with large length-diameter ratio

Abstract

The utility model discloses a clamping device for horizontal turning of a large-length-diameter-ratio column piece. The clamping device is composed of a front ejector block and a rear ejector block. The front jacking block comprises a plurality of front jacking block reducing rings and front jacking block inner supporting bolts which are sequentially arranged in a sleeving mode from inside to outside, a plurality of front jacking block inner supporting sliding grooves are formed in the front jacking block reducing ring located on the innermost side from the middle to the outside in a fan shape, and the front jacking block inner supporting bolts and the front jacking block inner supporting sliding grooves are matched to achieve position adjustability; the rear ejector block comprises a plurality of rear ejector block variable-diameter rings and rear ejector block inner supporting bolts which are sequentially arranged in a sleeving mode from inside to outside, a plurality of rear ejector block inner supporting sliding grooves are formed in the rear ejector block variable-diameter ring located on the innermost side from the middle to the outside in a fan shape, and the rear ejector block inner supporting bolts and the rear ejector block inner supporting sliding grooves are matched to achieve position adjustability; the inner supporting holes in the two ends of the cylindrical workpiece are matched with the front ejector block inner supporting bolt and the rear ejector block inner supporting bolt correspondingly so that the cylindrical workpiece can be limited. Cylindrical workpieces with different diameters are clamped through the combination of the variable-diameter rings, and the safety of the clamping process is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical equipment technical field, specifically speaking, it is a kind of clamping device for large length-diameter ratio column piece horizontal turning. BACKGROUND

[0002] Horizontal lathe is one of main equipment of large length-diameter ratio column piece processing, but due to the low rigidity of the body of large length-diameter ratio column piece, deformation and tool chatter easily occur in its processing process, and the deformation of cylindrical workpiece in the processing process due to factors such as rotation of cylindrical workpiece or machine tool vibration can be controlled by proper clamping method.

[0003] When large length-diameter ratio column piece is processed using horizontal lathe, one end clamping one end using thimble or both ends using thimble clamping is the common clamping mode of horizontal lathe processing large length-diameter ratio column piece, and the axial force received by column piece can be increased by adjusting clamping force and position of thimble, to increase clamping reliability. However, excessive axial force often leads to column piece flexure, resulting in unqualified final processing quality. When processing column piece with high risk of falling after heavy weight or column piece material, in order to ensure processing quality, it is necessary to reduce the risk of falling while ensuring clamping reliability. SUMMARY

[0004] The utility model aims at providing a kind of clamping device for large length-diameter ratio column piece horizontal turning, to solve the problem that existing technology cannot meet the clamping axial force that ensures no flexure phenomenon and no falling risk.

[0005] The utility model solves the above-mentioned problems by the following technical solutions:

[0006] The clamping device for large length-diameter ratio column piece horizontal turning is composed of front top block and rear top block;

[0007] The front top block includes: a plurality of front top block variable-diameter rings and a front top block inner support bolt, which are sequentially sleeved from inside to outside, a plurality of front top block inner support grooves are arranged in a fan shape outward from the middle on the innermost front top block variable-diameter ring, and the front top block inner support bolt is matched with the front top block inner support groove to realize adjustable position;

[0008] The rear top block includes: a plurality of rear top block variable-diameter rings and a rear top block inner support bolt, which are sequentially sleeved from inside to outside, a plurality of rear top block inner support grooves are arranged in a fan shape outward from the middle on the innermost rear top block variable-diameter ring, and the rear top block inner support bolt is matched with the rear top block inner support groove to realize adjustable position;

[0009] The two ends of the cylindrical workpiece abut against the front top block and the rear top block respectively, and the inner support holes at the two ends of the cylindrical workpiece are matched with the front top block inner support bolt and the rear top block inner support bolt respectively to limit the cylindrical workpiece.

[0010] As a further improvement thereof, the plurality of front top block reducing rings and the plurality of rear top block reducing rings are respectively connected axially by bolts.

[0011] As a further improvement thereof, the plurality of front top block reducing rings are each formed with not less than two front top block connecting holes on the side surface for matching with the bolts, so as to connect the front top block reducing rings with or without the bolts; and the plurality of rear top block reducing rings are each formed with not less than one rear top block connecting hole on the side surface for matching with the bolts, so as to connect the rear top block reducing rings with the bolts.

[0012] As a further improvement thereof, the front top block connecting hole of the outermost front top block reducing ring near one end of the cylindrical workpiece is used to abut against the front top block connecting hole of the outermost front top block reducing ring far from the other end of the cylindrical workpiece, so as to abut the front top block reducing ring against the cylindrical workpiece.

[0013] As a further improvement thereof, the outermost front top block reducing ring and the outermost rear top block reducing ring are each longitudinally cut to form an installation plane, so as to set the front top block connecting hole and the rear top block connecting hole.

[0014] As a further improvement thereof, the plurality of inner front top block reducing rings and the plurality of inner rear top block reducing rings are each formed with a front top block sliding groove and a rear top block sliding groove on the side surface, so as to position the front top block reducing rings and the rear top block reducing rings in the inner and outer positions in the circumferential direction.

[0015] As a further improvement thereof, the innermost rear top block reducing ring is formed with a B-shaped center hole at the center position for matching with a machine tool center pin.

[0016] As a further improvement thereof, the front top block reducing ring and the rear top block reducing ring are each provided with three.

[0017] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0018] (1), the utility model discloses a front top block and rear top block each reducing ring combination can realize the clamping of different diameter cylindrical workpieces, solve the problem that one diameter cylindrical workpiece needs to correspond to one front top block and rear top block, effectively reduce the number of clamping devices, save processing cost.

[0019] (2), the utility model discloses the adjustable position inner support bolt, satisfy the demand of different diameter cylindrical workpieces needing different size inner support hole to support, and through inner support bolt can avoid the harm caused by the falling of the clamping force too small cylindrical workpiece, improve the security. DRAWINGS

[0020] Figure 1 This is a schematic diagram of the front top block structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the rear top block structure of this utility model;

[0022] Figure 3 This is a schematic diagram illustrating the different usage modes of the front top block of this utility model;

[0023] Figure 4 This is a schematic diagram illustrating the different usage modes of the rear top block of this utility model.

[0024] Figure 5 A schematic diagram of the structure of the rear top block of this utility model having a type B central hole;

[0025] Figure 6 This is a schematic diagram of the cylindrical workpiece of this utility model.

[0026] Figure label:

[0027] 1. Front top block reducing ring I; 2. Front top block connecting hole I; 3. Front top block reducing ring II; 4. Rear top block reducing ring I; 5. Rear top block connecting hole I; 6. Rear top block reducing ring II; 7. Rear top block inner support bolt; 8. Rear top block reducing ring III; 9. Front top block reducing ring III; 10. Front top block inner support bolt; 11. Front top block sliding groove; 12. Front top block inner support sliding groove; 13. Rear top block sliding groove; 14. Rear top block inner support sliding groove; 15. Type B center hole; 16. Inner support hole; 17. Cylindrical workpiece. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example

[0030] Combined with appendix Figures 1-6 As shown, a clamping device for horizontal turning of columnar parts with large length-to-diameter ratio is composed of a front top block and a rear top block; the front top block includes: a plurality of front top block variable diameter rings arranged in sequence inside and outside, and a front top block inner support bolt; the innermost front top block variable diameter ring is provided with a plurality of front top block inner support grooves 12 arranged in a fan shape from the center outward; the front top block inner support bolt cooperates with the front top block inner support grooves 12 to achieve position adjustment;

[0031] The rear top block comprises a plurality of rear top block reducing rings and a rear top block inner support bolt 7, which are sequentially sleeved from inside to outside, and a plurality of rear top block inner support sliding grooves 14 are arranged in a fan shape from the middle to the outside on the innermost rear top block reducing ring, and the rear top block inner support bolt 7 is matched with the rear top block inner support sliding groove 14 to realize adjustable position.

[0032] The two ends of the cylindrical workpiece are respectively abutted against the front top block and the rear top block, and the inner support holes at the two ends of the cylindrical workpiece are respectively matched with the front top block inner support bolt and the rear top block inner support bolt 7 to limit the cylindrical workpiece.

[0033] Further technical solutions, a plurality of the front top block reducing rings and a plurality of the rear top block reducing rings are respectively axially connected by bolts. The side surface of each of the plurality of front top block reducing rings is formed with not less than two front top block connecting holes matched with the bolts, so as to connect the used or unused front top block reducing rings by the bolts; the side surface of each of the plurality of rear top block reducing rings is formed with not less than one rear top block connecting hole matched with the bolt, so as to connect the used rear top block reducing ring by the bolt.

[0034] The front top block connecting hole of the outermost front top block reducing ring close to one end of the cylindrical workpiece is used to be matched with the front top block connecting hole of the used front top block reducing ring away from the other end of the cylindrical workpiece, so as to abut the used front top block reducing ring against the cylindrical workpiece. The outermost front top block reducing ring and the outermost rear top block reducing ring are both longitudinally cut to form a mounting plane, which is used to set the front top block connecting hole and the rear top block connecting hole. The side surface of each of the plurality of inner front top block reducing rings and the plurality of inner rear top block reducing rings is respectively formed with a front top block sliding groove 11 and a rear top block sliding groove 13, so as to circumferentially position the inner and outer front top block reducing rings and the inner and outer rear top block reducing rings. The center position of the innermost rear top block reducing ring of the rear top block is formed with a B-shaped center hole 15 matched with a machine tool needle.

[0035] As a preferred, the front top block reducing ring and the rear top block reducing ring are respectively provided with three.

[0036] In a specific embodiment, as Figures 1-6As shown, a clamping device for horizontal turning of a large length-diameter ratio column part is composed of a front top block, a rear top block and the like. The front top block comprises a front top block variable-diameter ring I 1, a front top block variable-diameter ring II 3, a front top block variable-diameter ring III 9 and a front top block inner support bolt 10. The front top block variable-diameter ring I and the front top block variable-diameter ring II are sequentially sleeved outside the front top block variable-diameter ring III. A plurality of front top block inner support sliding grooves 12 are arranged on the front top block variable-diameter ring III in a fan shape from the middle part to the outside. The front top block inner support bolt 10 is matched with the front top block inner support sliding groove 12 to realize adjustable position. The rear top block comprises a rear top block variable-diameter ring I 4, a rear top block variable-diameter ring II 6, a rear top block variable-diameter ring III 8 and a rear top block inner support bolt 7. The rear top block variable-diameter ring I 4 and the rear top block variable-diameter ring II 6 are sequentially sleeved outside the rear top block variable-diameter ring III 8. A plurality of rear top block inner support sliding grooves 14 are arranged on the rear top block variable-diameter ring III 8 in a fan shape from the middle part to the outside. The rear top block inner support bolt 7 is matched with the rear top block inner support sliding groove 14 to realize adjustable position. The front top block inner support bolt 10 and the rear top block inner support bolt 7 can be respectively adjusted in position through the front top block inner support sliding groove 12 and the rear top block inner support sliding groove 14, thereby meeting the requirement of supporting the cylindrical workpiece with different sizes of inner support holes.

[0037] Specifically, the front top block variable-diameter ring I 1 is formed with a front top block connecting hole I 2 on one end side of the front top block variable-diameter ring II 3 and the front top block variable-diameter ring III 9. The axial connection among the front top block variable-diameter ring I 1, the front top block variable-diameter ring II 3 and the front top block variable-diameter ring III 9 is realized through the cooperation of the front top block connecting hole I 2. The rear top block variable-diameter ring I 4 is formed with a rear top block connecting hole I 5. The axial connection among the rear top block variable-diameter ring I 4, the rear top block variable-diameter ring II 6 and the rear top block variable-diameter ring III 8 is realized through the cooperation of the rear top block connecting hole I 5. In the embodiment, the front top block connecting hole I 2 and the rear top block connecting hole I 5 are fixed through bolts. Each variable-diameter ring of the front top block is provided with two connecting holes in the axial direction, i.e., the front top block variable-diameter ring I 1, the front top block variable-diameter ring II 3 and the front top block variable-diameter ring III 9 are respectively provided with the front top block connecting hole I 2, the front top block connecting hole II and the front top block variable-diameter ring III. As shown in the figure, Figure 3 and Figure 4 As shown, the front top block and the rear top block have a plurality of assembly forms to adapt to the clamping requirement of cylindrical workpieces 17 with different diameters. The front top block connecting hole I close to one end of the cylindrical workpiece is used to connect the front top block variable-diameter ring I 1 participating in the contact of the cylindrical workpiece end face. The front top block connecting hole I away from one end of the cylindrical workpiece is used to connect the front top block variable-diameter ring I 1 with the front top block variable-diameter ring not participating in the contact of the cylindrical workpiece end face. The front top block variable-diameter ring or the rear top block variable-diameter ring in contact with the cylindrical workpiece end face is determined according to the diameter of the cylindrical workpiece. Each variable-diameter ring of the rear top block is provided with one connecting hole in the axial direction, i.e., the rear top block variable-diameter ring I 4, the rear top block variable-diameter ring II 6 and the rear top block variable-diameter ring III 8 are respectively provided with the rear top block connecting hole I 5, the rear top block connecting hole II and the rear top block variable-diameter ring III, which are used to connect the rear top block variable-diameter rings participating in the contact of the cylindrical workpiece end face together.

[0038] Preferably, the front top block and the rear top block are respectively provided with front top block sliding grooves 11 and rear top block sliding grooves 13 on the inner rings, and each variable-diameter ring can move forward and backward through the sliding grooves, and the sliding grooves have a circumferential positioning effect during installation.

[0039] Further, the rear top block variable-diameter ring III 8 is formed with a B-type center hole 15 at the center position, and the rear top block is connected with the machine tool center pin through the B-type center hole 15.

[0040] In an optional embodiment, the front top block variable-diameter ring I 1 and the rear top block variable-diameter ring I 4 located at the outermost sides are longitudinally cut to form installation planes, which are respectively used to set the front top block connecting hole I 2 and the rear top block connecting hole I 5, so as to facilitate the installation of the bolts and prevent the nuts from protruding after the installation of the bolts.

[0041] During processing, the machine tool clamping jaws are used to clamp the end of the front top block variable-diameter ring I 1 away from the front top block variable-diameter ring II 3 and the front top block variable-diameter ring III 9; the rear top block is connected with the machine tool center pin through the B-type center hole 15, and the two end faces of the cylindrical workpiece 17 are provided with inner support holes 16, and the inner support holes 16 of the two end faces of the cylindrical workpiece 17 are respectively in contact with the outer sides of the front top block inner support bolt 10 and the rear top block inner support bolt 7, of course, they can also not be in contact, in order to ensure the stability of clamping, it is preferred that they are in contact, so as to position the cylindrical workpiece 17.

[0042] Although the present application has been described with reference to the explanatory embodiments thereof, the above-described embodiments are only the preferred embodiments of the present application, and the implementation of the present application is not limited by the above-described embodiments, and it should be understood that those skilled in the art can design many other modifications and embodiments, and these modifications and embodiments will fall within the scope and spirit of the present application.

Claims

1. A clamping device for horizontal turning of a large-length-diameter column member, characterized by, The front top block and the rear top block are composed of; The front top block comprises a plurality of front top block variable-diameter rings and a front top block inner support bolt, and a plurality of front top block inner support sliding grooves are arranged in a fan shape outward from the middle of the innermost front top block variable-diameter ring; the front top block inner support bolt is matched with the front top block inner support sliding groove to realize adjustable position. The rear top block comprises a plurality of rear top block variable-diameter rings and a rear top block inner support bolt, and a plurality of rear top block inner support sliding grooves are arranged in a fan shape outward from the middle of the innermost rear top block variable-diameter ring; the rear top block inner support bolt is matched with the rear top block inner support sliding groove to realize adjustable position. The two ends of the cylindrical workpiece are respectively abutted against the front top block and the rear top block, and the inner support holes at the two ends of the cylindrical workpiece are matched with the front top block inner support bolt and the rear top block inner support bolt to limit the cylindrical workpiece.

2. The clamping device for horizontal turning of a long-length-diameter column part according to claim 1, wherein The plurality of front top block variable-diameter rings and the plurality of rear top block variable-diameter rings are respectively connected in the axial direction by bolts.

3. The clamping device for horizontal turning of a long-length-diameter column part according to claim 2, wherein The side surface of each of the plurality of front top block variable-diameter rings is formed with not less than two front top block connecting holes matched with the bolts to connect the used or unused front top block variable-diameter rings by the bolts; the side surface of each of the plurality of rear top block variable-diameter rings is formed with not less than one rear top block connecting hole matched with the bolt to connect the used rear top block variable-diameter rings by the bolt.

4. The clamping device for horizontal turning of a long-length-diameter column part according to claim 3, wherein The front top block connecting hole of the outermost front top block variable-diameter ring close to one end of the cylindrical workpiece is used to be matched with the front top block connecting hole of the used front top block variable-diameter ring away from the other end of the cylindrical workpiece to abut the used front top block variable-diameter ring against the cylindrical workpiece.

5. The clamping device for horizontal turning of long and slim column parts according to claim 3, characterized in that, The outermost front top block variable-diameter ring and the outermost rear top block variable-diameter ring are both longitudinally cut to form an installation plane for setting the front top block connecting hole and the rear top block connecting hole.

6. The clamping device for horizontal turning of a long and small diameter column according to claim 1, wherein The side surface of each of the plurality of inner front top block variable-diameter rings and the plurality of inner rear top block variable-diameter rings is respectively formed with a front top block sliding groove and a rear top block sliding groove to circumferentially position the inner and outer front top block variable-diameter rings and the inner and outer rear top block variable-diameter rings.

7. The clamping device for horizontal turning of a long and small diameter column according to claim 1, wherein A B-shaped center hole matched with a machine tool center pin is formed at the center position of the innermost rear top block variable-diameter ring of the rear top block.

8. The clamping device for horizontal turning of a long and small diameter column according to any one of claims 1 to 7, characterized in that, The front top block variable-diameter ring and the rear top block variable-diameter ring are respectively provided with three.

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