CN113996827B

CN113996827B - High-precision combined knife handle

Info

Publication number: CN113996827B
Application number: CN202111024851.6A
Authority: CN
Inventors: 袁龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2022-10-18
Anticipated expiration: 2041-09-02
Also published as: CN113996827A

Abstract

The invention relates to a high-precision combined knife handle which comprises a main handle and a lengthened handle, wherein the front end of the lengthened handle is connected with an elastic collet chuck, the elastic collet chuck is used for clamping a knife tool, the elastic collet chuck is fixedly connected with the lengthened handle through a first locking assembly, and the rear end of the lengthened handle is fixedly connected with the front end of the main handle through a second locking assembly; the first locking assembly includes: the nut comprises a first locking ring, a nut and a first ball group, wherein the first locking ring is sleeved on the periphery of the lengthened handle and is in threaded connection with the lengthened handle, the nut is sleeved on the periphery of the first locking ring and is connected with the elastic collet chuck, the first ball group is clamped between the first locking ring and the nut, and a first fixing piece used for limiting the first locking ring and a second fixing piece used for limiting the first ball group are arranged on the side face of the nut. The first locking piece is of a split structure, and radial deviation between the nut and the tool handle can be effectively avoided, so that the requirement of ultrahigh-precision assembly is met.

Description

High-precision combined knife handle

Technical Field

The invention relates to the technical field of machine tool machining, in particular to a high-precision combined knife handle.

Background

The existing market is along with the development of industry, the demand for ultra-high precision related equipment, such as a tool holder for a machine tool, is increased, and the machining requirement precision for the machine tool equipment is higher and higher, the machine tool is a master of industrial machining, the precision, the stability and the rigidity of the tool holder of the used HSK/BT/ISO series and the like play a decisive role, the existing tool holder and the existing tool are usually used for fixing the tool on the tool holder by utilizing a nut and a clamping sleeve, the nut is in threaded connection with the tool holder, however, when the nut is used for fastening the tool holder and the tool, certain errors always exist in assembly, the nut, the tool holder and the clamping sleeve can generate radial runout when being fastened, and radial deviation is generated between the nut and the tool holder, so that the assembly precision of the tool is influenced.

Disclosure of Invention

In view of the above, the present invention provides a high precision combined tool shank to solve the above technical problems.

The purpose of the invention is realized by the following technical scheme:

a high-precision combined knife handle comprises a main handle and a lengthened handle, wherein the front end of the lengthened handle is connected with an elastic collet chuck, the elastic collet chuck is used for clamping a knife tool, the elastic collet chuck is fixedly connected with the lengthened handle through a first locking assembly, and the rear end of the lengthened handle is fixedly connected with the front end of the main handle through a second locking assembly;

the first locking assembly includes: the clamping device comprises a first locking ring, a nut and a first ball group, wherein the first locking ring is sleeved on the periphery of the lengthened handle and in threaded connection with the lengthened handle, the nut is sleeved on the periphery of the first locking ring and in connection with the elastic collet chuck, the first ball group is clamped between the first locking ring and the nut, and a first fixing piece used for limiting the first locking ring and a second fixing piece used for limiting the first ball group are arranged on the side face of the nut.

Further, the second locking assembly includes: the second locking ring, the fixed sleeve and the second ball group are sleeved on the periphery of the second locking ring, the second ball group is clamped between the second locking ring and the fixed sleeve, the main handle is connected with the lengthened handle in a sleeved mode, the second locking ring is in threaded connection with the main handle and the lengthened handle, the third fixing piece used for limiting the second locking ring and the fourth fixing piece used for limiting the second ball group are arranged on the side face of the fixed sleeve.

Furthermore, the contact surface of the elastic collet chuck and the lengthened handle is a conical surface, and the nut is used for driving the elastic collet chuck to move along the conical surface so as to clamp or loosen the cutter.

Furthermore, a first annular clamping groove is formed between the first locking ring and the nut, and the first ball group is clamped in the first annular clamping groove.

Furthermore, first ring groove is more than two, and more than two first ring groove are along the axial interval distribution of first lock ring, the quantity of first ball group and first ring groove's quantity phase-match.

Furthermore, a second annular clamping groove is formed between the second locking ring and the fixed sleeve, and the second ball group is clamped in the second annular clamping groove.

Furthermore, the number of the second annular clamping grooves is more than two, the more than two second annular clamping grooves are distributed at intervals along the axial direction of the second locking ring, and the number of the second ball groups is matched with the number of the second annular clamping grooves.

Furthermore, the number of the second locking rings is one or more than two; when the number of the second locking rings is more than two, the fixed sleeve is one and is sleeved on the second locking rings.

Furthermore, the rear end of the main handle is also fixedly provided with a blind rivet component.

Further, the blind rivet component comprises a main body and a fastener, the fastener is in threaded connection with the main handle, and the fastener is sleeved on the periphery of the main body and is connected with the main body through an insert.

Compared with the prior art, the invention has the beneficial effects that:

according to the high-precision combined knife handle, the first locking piece is of a split structure, the first locking ring and the screw cap are split, the screw cap is used for achieving the ultra-high-precision matching orientation effect, the first locking ring is used for achieving the fastening effect, the first locking ring and the screw cap are linked through the first fastening piece, the split screw cap and the first locking ring are combined together through the first ball group, the split high-precision locking structure is obtained, the split high-precision locking structure is matched and spliced with a knife, and radial deviation between the screw cap and the knife handle can be effectively avoided, so that the ultra-high-precision assembling requirement is met. In addition, the length of the cutter handle is increased by additionally arranging the lengthened handle, the cutter handle and the main handle are fixed through the second locking piece, and the second locking piece can adopt the same structural mode as the first locking piece to ensure the precision and the stability, so that the assembly and the disassembly of the cutter handle are facilitated, and the applicability of the cutter handle is improved.

Drawings

Fig. 1 is one of the overall structural sectional views of embodiment 1 of the present invention.

Fig. 2 is one of the overall structural diagrams of embodiment 1 of the present invention.

Fig. 3 is a second cross-sectional view of the overall structure of embodiment 1 of the present invention.

Fig. 4 is a second schematic view of the overall structure of embodiment 1 of the present invention.

Fig. 5 is one of the overall structural sectional views of embodiment 2 of the present invention.

Fig. 6 is one of the overall structural diagrams of embodiment 2 of the present invention.

Fig. 7 is a second cross-sectional view of the overall structure of embodiment 2 of the present invention.

Fig. 8 is a second schematic structural diagram of embodiment 2 of the present invention.

Fig. 9 is one of the overall structural sectional views of embodiment 3 of the present invention.

Fig. 10 is an overall structural diagram of embodiment 3 of the present invention.

Fig. 11 is a second cross-sectional view of the whole structure of embodiment 3 of the present invention.

Fig. 12 is a second schematic view of the overall structure of embodiment 3 of the present invention.

Reference numerals: 1-a main handle; 2-lengthening the handle; 3-an elastic collet; 4-cutting tool; 5-a first locking assembly; 51-a first locking ring; 52-a nut; 53-a first ball set; 54-a first fixture; 55-a second fixture; 6-a second locking assembly; 61-a second locking ring; 62-fixing sleeves; 63-a second ball set; 64-a third mount; 65-a fourth fixture; 7-a second resilient collet; 8-a blind rivet assembly; 81-a body; 82-a fastener; 83-an insert; 9-central water outlet connecting pin; 10-a sealing gasket; 11-sealing the fixing nut; 12-a cutter bar; 13-a blade; 14-a tool bar fastening nut; 15-tool bar fixing nut.

Detailed Description

To facilitate understanding of those skilled in the art, the present invention will be described in further detail below with reference to specific embodiments and the accompanying drawings.

Referring to fig. 1-12, embodiments of the present invention include.

Example 1

Referring to fig. 1 to 4, a high-precision combined tool shank includes a main shank 1 and a lengthened shank 2, the front end of the lengthened shank 2 is connected with an elastic collet chuck 3, the elastic collet chuck 3 is used for clamping a tool 4, the elastic collet chuck 3 is fixedly connected with the lengthened shank 2 through a first locking assembly 5, and the rear end of the lengthened shank 2 is fixedly connected with the front end of the main shank 1 through a second locking assembly 6; the first locking assembly 5 comprises: the extension handle comprises a first locking ring 51, a nut 52 and a first ball group 53, wherein the first locking ring 51 is sleeved on the periphery of the extension handle 2 and is in threaded connection with the extension handle 2, the nut 52 is sleeved on the periphery of the first locking ring 51 and is connected with the elastic collet chuck 3, the first ball group 53 is clamped between the first locking ring 51 and the nut 52, and a first fixing piece 54 used for limiting the first locking ring 51 and a second fixing piece 55 used for limiting the first ball group 53 are arranged on the side face of the nut 52. The nut 52 is not limited to a cylindrical radial type, and may be designed to extend to various shapes. The contact surface of the elastic collet chuck 3 and the elongated handle 2 is a conical surface, and the nut 52 is used for driving the elastic collet chuck 3 to move along the conical surface so as to clamp or loosen the cutter 4. The front end of the main shank 1 is provided with a second elastic collet 7, and the elastic collet 3 and the second elastic collet 7 arranged up and down can be used for clamping the tool 4 together.

First retaining member is split type structure, carry out the split with first retaining ring 51 and nut 52, the main objective of split is that the nut is radial when solving the screw fastening and is radially produced the run-out and the cooperation of straightness high accuracy of straightness with handle of a knife and elasticity collet chuck 3, first retaining ring 51 can be the nut, nut 52 is used for realizing the cooperation directional action of super high accuracy, first retaining ring 51 is used for realizing the fastening effect, and realize first retaining ring 51 and nut 52's linkage through first mounting 54, first ball group 53 is used for combining together the nut 52 and the first retaining ring 51 of split, thereby obtain a disconnect-type locking structure of high accuracy, cooperate the concatenation with cutter 4 again, thereby can effectively avoid producing the radial deviation between nut 52 and the handle of a knife and realize the equipment requirement of super high accuracy. In addition, the length of the cutter handle is increased by additionally arranging the lengthened handle 2, the cutter handle and the main handle 1 are fixed through the second locking piece, and the second locking piece can adopt the same structural mode as the first locking piece to ensure the precision and the stability, so that the assembly and the disassembly of the cutter handle are convenient, and the applicability of the cutter handle is improved; it should be noted that, the number of the elongated handles 2 can be two or more according to actual requirements, and the number of the corresponding second locking members is correspondingly multiple.

First mounting 54 can be structures such as bayonet lock, jump ring, screw or screw, and the screw is taken as the example to this embodiment, is equipped with the through-hole on the nut 52, and the spiral shell screw passes through the through-hole and is equipped with the internal thread with screw matched with in the through-hole, through screwing up or loosening the screw, can realize the fixed to first lock ring 51 for first lock ring 51 can be with nut 52 synchronous revolution. The second fixing member 55 may also be a bayonet, a snap spring, a screw, or a screw, and the embodiment also uses a screw as an example, and the nut 52 is provided with a mounting hole matched with the screw, so that the first ball group 53 can be mounted through the mounting hole, and then fixed by the screw after the mounting is completed. The first fixing pieces 54 and the second fixing pieces 55 can be provided in plurality, meanwhile, the through holes matched with the first fixing pieces 54 and the mounting holes matched with the second fixing pieces 55 are also provided in plurality, the first fixing pieces 54 can be arranged on the periphery of the nut 52 at intervals, and can be distributed in a staggered manner or uniformly distributed in a ring shape; the second fixing pieces 55 are disposed at intervals on the outer circumference of the nut 52 and face the first ball group 53.

A first ring slot is provided between the first locking ring 51 and the nut 52, and the first ball group 53 is clamped in the first ring slot. The number of the first annular clamping grooves is more than two, the more than two first annular clamping grooves are distributed at intervals along the axial direction of the first locking ring 51, and the number of the first ball groups 53 is matched with that of the first annular clamping grooves. Specifically, the outer wall of the first lock ring 51 and the inner wall of the nut 52 are provided with grooves for placing the first ball group 53, the grooves on the first lock ring 51 and the grooves on the nut 52 jointly form a first annular clamping groove, and the first ball group 53 is arranged on the first annular clamping groove and jointly forms a separated high-precision locking mechanism with the first lock ring 51 and the nut 52. Of course, the number of the first locking rings 51 may be two or more, and the nuts 52 may be fitted around the outer peripheries of the two or more first locking rings 51.

When the equipment, certain assembly clearance has between first lock ring 51 and the nut 52, nut 52 at first is together fixed through first mounting 54 with first lock ring 51, pack the ball into first ring groove in proper order from the outside to the inside from the mounting hole after fixing well again, until filling up, rethread second mounting 55 seals if the mounting hole is equipped with more than two, then should only leave a mounting hole and be in open state, seal other mounting holes earlier, avoid the ball to drop, then rotate and screw up cutter 4. The first fastener 54 is then loosened and the nut 52 and the first locking ring 51 are separated. The first lock ring 51 is used for keeping the position of the nut 52 from being loosened axially, the nut 52 is used for providing axial force for the elastic collet chuck 3, and after the first fixing piece 54 is loosened, the nut 52 cannot shake axially through the first ball group 53, but the coaxiality of the nut and the cutter 4 can be automatically maintained through the radial clearance.

The first ball group 53 of this embodiment may be one or more than two groups, which is mainly used to ensure the nut 52 and the first locking ring 51 are vertically fixed, and the fixing principle is similar to that of the rotor, but the final purpose is not to rotate the rotor, but to reorient the nut 52 and the first locking ring 51, and to properly place some clearance, so that the inner diameter of the nut 52 and the outer diameter of the elongated handle 2 can increase the precision of clearance fit as much as possible, so as to achieve the desired precision. The existing nut 52 is integrated, and due to the influence of thread precision, the fit clearance of the nut needs to be set to 0.03-0.05mm to enable the two parts to be connected together without interference when being locked, and the two parts on two sides can be connected in a secret of 0.01 to meet the high-precision butt joint requirement after being separated in the embodiment.

In this embodiment, the second locking assembly 6 includes: the second locking ring 61 is sleeved at the joint of the main handle 1 and the lengthened handle 2 and is in threaded connection with the main handle and the lengthened handle, the fixing sleeve 62 is sleeved on the periphery of the second locking ring 61, the second ball group 63 is clamped between the second locking ring 61 and the fixing sleeve 62, and the side surface of the fixing sleeve 62 is provided with a third fixing piece 64 used for limiting the second locking ring 61 and a fourth fixing piece 65 used for limiting the second ball group 63. The third fixing member 64 and the fourth fixing member 65 may be a bayonet, a snap spring, a screw, or a bolt. The second locking assembly 6, which has the same operation mechanism as the first locking assembly 5, functions to ensure the stability of the connection between the main shank 1 and the elongated shank 2 and to prevent radial play, thereby improving the connection accuracy.

A second annular clamping groove is formed between the second locking ring 61 and the fixing sleeve 62, and the second ball group 63 is clamped in the second annular clamping groove. The number of the second annular clamping grooves is more than two, the more than two second annular clamping grooves are distributed at intervals along the axial direction of the second locking ring 61, and the number of the second ball groups 63 is matched with that of the second annular clamping grooves. Referring to fig. 1 and 3, the number of the second locking rings 61 of the present embodiment is one or more than two; when the number of the second locking rings 61 is two or more, the fixing sleeve 62 is one and is sleeved on the two or more second locking rings 61.

In this embodiment, a blind rivet assembly 8 is fixedly arranged at the rear end of the main handle 1. The blind rivet assembly 8 comprises a main body 81 and a fastening member 82, wherein the fastening member 82 is in threaded connection with the main shank 1, and the fastening member 82 is sleeved on the periphery of the main body 81 and is connected with the main body 81 through an insertion piece 83. The blind rivet subassembly 8 of this embodiment is split type structure, carries out the split with current main part 81 and screw thread, and the main aim at of split is radial when avoiding the screw fastening blind rivet and the radial produced runout of handle of a knife to improve the cooperation precision. The insert 83 may be a bayonet, a snap spring, a screw, or a screw. It should be noted that the end of the main body 81 is provided with a nut, which is reserved for the later use when no insert 83 is locked, and can be adjusted when the gap between the inserts 83 is large.

Example 2

Referring to fig. 5 to 8, the difference from embodiment 1 is that the rear end of the main shank 1 of the present embodiment is not provided with the blind rivet assembly 8, and the rear end of the main shank 1 forms a mounting hole matched with a machine tool, so that the main shank 1 can be conveniently mounted on the machine tool. The second elastic collet chuck 7 positioned on the main handle 1 is used for clamping the central water outlet connecting pin 9, sealing gaskets 10 are sleeved at the upper end and the lower end of the central water outlet connecting pin 9, and a sealing fixing nut 11 is further arranged at the bottom end of the central water outlet connecting pin 9. The structure of the main handle 1 of the present embodiment is different from that of embodiment 1, and can be selected according to different actual requirements in the actual use process. Referring to fig. 5 and 7, the number of the second locking rings 61 of the present embodiment may be one or more than two; when the number of the second locking rings 61 is two or more, the fixing sleeve 62 is one and is sleeved on the two or more second locking rings 61.

Example 3

Referring to fig. 9 and 10, unlike embodiments 1 and 2, this embodiment does not have the elongated shank 2, and can directly fix the tool 4 to the main shank 1 via the elastic collet 3 and the first locking member 5. Referring to fig. 11 and 12 in particular, the present embodiment provides another embodiment, in which a position of the main handle 1 where the cutter 4 is originally installed is changed to be an installation position of a cutter bar 12, and a blade 13 is installed on the cutter bar 12, wherein the cutter bar 12 is fixed on the main handle 1 through a cutter bar fastening nut 14, the cutter bar fastening nut 14 is sleeved on an outer periphery of the cutter bar 12, and a bottom of the cutter bar 12 is further provided with a cutter bar fixing nut 15. This construction is also intended to avoid radial run-out when the arbor 12 is mounted on the main shank 1, thereby improving the accuracy of its mounting.

It should be noted that all nut assemblies of the present embodiment should meet and exceed the standards: ISO 15488, ISO 10897, GB/T25378, GB/T31559, JIT 5556, ISO 12164-2, ISO 15488, ISO 10897 and other related standards, ER Pansy/DGB Pansy/SK 6 Pansy/SD Pansy/ST Pansy/OZ Pansy, etc.

The shank assembly meets and exceeds the following criteria: DIN 69871-1, ISO 7388-2, GB/T10944.1, GB/T10944.4, JIS B6339-1, JIS B6339-2, MAS 403, DIN 69875-1, DIN 698893-2, DIN 698893-5, DIN 698893-6, ISO 12164-1, ISO 12164-2, GB/T19449.1, GB/T19449.3, and BT30/BT40/BT50/BT60/BBT30/BBT40/BBT50/BBT60/NBT30/NBT40/NBT50/NBT60, and ISO10/ISO15/ISO20/ISO25/ISO30/HSK-A/HSK-B/HSK-C/HSK-D/HSK-E/HSK-F series and other related standards.

The blind rivet assembly meets and is superior to the following criteria: DIN 69872, GB/T10944.3, GB/T10944.5, ISO 7388-3, JIS B6339-3 and other relevant standards such as BT30/BT40/BT50/BT60, BBT30/BBT40/BBT50/BBT60, NBT30/NBT40/NBT50/NBT60, and ISO10/ISO15/ISO20/ISO25/ISO30 series.

In the description of the present invention, it is to be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed and operated in specific orientations, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.

Claims

1. The high-precision combined knife handle is characterized by comprising a main handle (1) and a lengthened handle (2), wherein the front end of the lengthened handle (2) is connected with an elastic collet chuck (3), the elastic collet chuck (3) is used for clamping a cutter (4), the elastic collet chuck (3) is fixedly connected with the lengthened handle (2) through a first locking assembly (5), and the rear end of the lengthened handle (2) is fixedly connected with the front end of the main handle (1) through a second locking assembly (6);

the first locking assembly (5) comprises: the novel nut locking device comprises a first locking ring (51), a nut (52) and a first ball group (53), wherein the first locking ring (51) is sleeved on the periphery of the lengthened handle (2) and in threaded connection with the lengthened handle (2), the nut (52) is sleeved on the periphery of the first locking ring (51) and in connection with the elastic collet chuck (3), the first ball group (53) is clamped between the first locking ring (51) and the nut (52), and a first fixing piece (54) used for limiting the first locking ring (51) and a second fixing piece (55) used for limiting the first ball group (53) are arranged on the side face of the nut (52).

2. A high precision combined tool shank according to claim 1, characterized in that the second locking assembly (6) comprises: the cover is established the junction of main handle (1) and extension handle (2) and with second locking ring (61), the cover of the two threaded connection establish fixed cover (62) of second locking ring (61) periphery and card are located second ball group (63) between second locking ring (61) and fixed cover (62), fixed cover (62) side is equipped with third mounting (64) that are used for spacing second locking ring (61) and is used for fourth mounting (65) of spacing second ball group (63).

3. A high precision combined tool shank according to claim 1, characterized in that the contact surface of the elastic collet chuck (3) and the lengthened tool shank (2) is a conical surface, and the nut (52) is used for driving the elastic collet chuck (3) to move along the conical surface so as to clamp or loosen the tool (4).

4. A high-precision combined knife handle according to claim 1, wherein a first annular clamping groove is formed between the first locking ring (51) and the nut (52), and the first ball group (53) is clamped in the first annular clamping groove.

5. A high-precision combined tool shank according to claim 4, characterized in that the number of the first annular clamping grooves is more than two, the more than two first annular clamping grooves are distributed at intervals along the axial direction of the first locking ring (51), and the number of the first ball groups (53) is matched with the number of the first annular clamping grooves.

6. A high precision combined tool shank according to claim 2, wherein a second annular groove is provided between the second locking ring (61) and the fixing sleeve (62), and the second ball group (63) is clamped in the second annular groove.

7. The high-precision combined hilt according to claim 6, wherein the number of the second ring clamping grooves is two or more, the two or more second ring clamping grooves are distributed at intervals along the axial direction of the second locking ring (61), and the number of the second ball groups (63) is matched with the number of the second ring clamping grooves.

8. A high precision combined tool shank according to claim 2, characterized in that the number of the second locking rings (61) is one or more than two; when the number of the second locking rings (61) is more than two, the fixed sleeve (62) is one and is sleeved on the second locking rings (61).

9. A high-precision combined knife handle according to claim 1, characterized in that a blind rivet component (8) is fixedly arranged at the rear end of the main handle (1).

10. A high precision combined tool shank according to claim 9, characterized in that the rivet component (8) comprises a main body (81) and a fastening member (82), the fastening member (82) is in threaded connection with the main shank (1), the fastening member (82) is sleeved on the periphery of the main body (81) and is connected with the main body (81) through an insertion member (83).