CN111843530A

CN111843530A - Universal machine tool positioning and clamping device

Info

Publication number: CN111843530A
Application number: CN202010570716.0A
Authority: CN
Inventors: 朱宝强; 潘丹
Original assignee: Zhejiang Dazhong Gear Co ltd
Current assignee: Zhejiang Dazhong Gear Co ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2020-10-30

Abstract

The invention discloses a universal machine tool positioning and clamping device, which comprises an axial positioning backer, a movable tailstock and a fastening assembly, wherein the axial positioning backer is fixed on the movable tailstock; the axial positioning backer and the movable tailstock are arranged correspondingly in the horizontal direction; the fastening components are respectively arranged on the axial positioning backer and the movable tailstock; the fastening component comprises a shell, a main threaded rod, an auxiliary threaded rod, a supporting seat, a main bevel gear, an auxiliary bevel gear, an internal thread moving block and a clamping jaw. The invention can realize the quick fixation of the shaft parts, and has simple operation and high positioning precision.

Description

Universal machine tool positioning and clamping device

Technical Field

The invention relates to the technical field of mechanical clamps, in particular to a universal machine tool positioning and clamping device.

Background

At present, although the structure of the existing gear is more complicated compared with the traditional gear, the overall shape of the existing gear can be circular; in addition, for later detection work, a central blind hole needs to be drilled in the central positions of two ends according to the structure of the raw materials before the raw materials are processed, and the central blind hole is used for detecting a datum point whether the raw materials are processed in place or not in the later period; in the machining process of the gear, turning is needed firstly, and in the machining process of the existing process, the original three-jaw chuck of the lathe is used for clamping one end of the gear to position and clamp the gear, so that the clamping mode is simple and stable, and the use is common.

However, this clamping method is too simple, and because only the fastening force of the three-jaw chuck is used, the stability of the machining process cannot be ensured, and the precision in the positioning and adjusting process is low.

Therefore, how to provide a machine tool positioning and clamping device capable of ensuring strong fastening stability and high fastening precision of shaft parts is a problem that needs to be solved urgently by those skilled in the art.

Disclosure of Invention

In view of this, the invention provides a universal machine tool positioning and clamping device, which can realize quick fixation of shaft parts, and has the advantages of simple operation and high positioning accuracy.

In order to achieve the purpose, the invention adopts the following technical scheme:

a universal machine tool positioning and clamping device comprises an axial positioning backer, a movable tailstock and a fastening assembly;

the axial positioning backer and the movable tailstock are arranged correspondingly in the horizontal direction;

the fastening components are respectively arranged on the axial positioning backer and the movable tailstock; the fastening assembly comprises a shell, a main threaded rod, an auxiliary threaded rod, a supporting seat, a main bevel gear, an auxiliary bevel gear, an internal thread moving block and a clamping jaw;

the shell is provided with a fixed groove in the center, and four sliding grooves are crosswise formed in the shell around the circumferential direction of the fixed groove;

Two ends of the main threaded rod are rotatably connected to the inside of the shell through the supporting seat; two ends of the auxiliary threaded rod are rotatably connected inside the shell through the supporting seat and are respectively positioned on two sides of the main threaded rod; the two auxiliary threaded rods are coaxially arranged and cross with the main threaded rod;

the main bevel gear is arranged in the center of the main threaded rod; the auxiliary bevel gear is arranged at the end of the auxiliary threaded rod, and the main bevel gear is meshed with the auxiliary bevel gear;

the internal thread moving block is sleeved on the main threaded rod and the auxiliary threaded rod;

one end of the clamping jaw is fixedly connected with the internal thread moving block, the other end of the clamping jaw protrudes out of the shell, and the clamping jaw is connected with the sliding groove in a sliding mode.

Through the technical scheme, the two ends of the shaft part are fixed by the clamping jaws, the clamping jaws are driven to move through the threaded rods, the four clamping jaws are driven to simultaneously operate through the gear pair, the clamping jaws are quickly fixed and separated simply and quickly, and the device is easy to operate, convenient to use and accurate in positioning.

Preferably, in the above general type of machine tool positioning and clamping device, further include a hand wheel, the hand wheel with one end fixed connection of main threaded rod, and expose in the casing is outside. Is convenient for a user to operate.

Preferably, in the above general machine tool positioning and clamping device, a tip is provided in the fixing groove. The center is arranged to be fixed with the blind hole in the end of the shaft part, so that the fastening precision is further improved.

Preferably, in the above general machine tool positioning and clamping device, the clamping jaw has an L-shaped structure. The clamped end faces the circumferential surface of the shaft part, and the fastening effect is better.

Preferably, in the above general machine tool positioning and clamping device, the end heads of the jaws are provided with hard rubber blocks. The fastening effect can be improved, and the clamping jaws can be prevented from damaging the surface of the shaft part.

Preferably, in the above general machine tool positioning and clamping device, the two internal thread moving blocks sleeved on the main threaded rod have opposite internal thread directions. The synchronous close and synchronous far keeping of the motion between two opposite clamping jaws can be guaranteed.

Preferably, in the above general machine tool positioning and clamping device, the two internal thread moving blocks sleeved on the secondary threaded rod have the same internal thread direction. The motion between the four claws can be ensured to be kept synchronously close to and away from all the time.

Compared with the prior art, the technical scheme of the invention has the advantages that the general machine tool positioning and clamping device has the following advantages:

1. the invention adopts the claws to fix two ends of shaft parts, drives the claws to move through the threaded rods, drives the four claws to simultaneously operate through the gear pair, simply and quickly realizes the quick fixation and separation of the claws, and has the advantages of simple operation, convenient use and accurate positioning.

2. Through the cooperation of bevel gear pair, drive two vice threaded rod synchronous motion through a main threaded rod, only can realize controlling fast of jack catch through the control hand wheel, carry out the location of high accuracy to shaft class part.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a front view of the overall structure provided by the present invention;

FIG. 2 is a front view of the fastening assembly provided by the present invention;

figure 3 is an internal front view of the fastener assembly provided by the present invention.

Wherein:

the device comprises a base, a fixing block, a clamping block, a hand wheel, a fixing groove, a clamping block, a fixing groove, a clamping block and a clamping block, wherein the fixing block is 1, the clamping block is 2, the clamping block is 3, the clamping block is 31, the fixing groove is 311, the sliding block is 312, the main threaded rod is 32, the auxiliary threaded rod is 33, the supporting block is 34, the main bevel gear is 35, the auxiliary bevel gear.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to fig. 3, the embodiment of the invention discloses a general positioning and clamping device for a machine tool, which comprises an axial positioning backer 1, a movable tailstock 2 and a fastening assembly 3;

the axial positioning backer 1 and the movable tailstock 2 are arranged correspondingly in the horizontal direction;

The fastening components 3 are respectively arranged on the axial positioning backer 1 and the movable tailstock 2; the fastening component 3 comprises a shell 31, a main threaded rod 32, a secondary threaded rod 33, a supporting seat 34, a main bevel gear 35, a secondary bevel gear 36, an internal thread moving block 37 and a clamping jaw 38;

a fixing groove 311 is formed in the center of the shell 31, and four sliding grooves 312 are formed in the shell 31 around the fixing groove 311 in a crisscross manner in the circumferential direction;

two ends of the main threaded rod 32 are rotatably connected inside the shell 31 through a supporting seat 34; two ends of the secondary threaded rod 33 are rotatably connected inside the shell 31 through a support seat 34 and are respectively positioned at two sides of the primary threaded rod 32; the two auxiliary threaded rods 33 are coaxially arranged and cross the main threaded rod 32;

the main bevel gear 35 is arranged in the center of the main threaded rod 32; the auxiliary bevel gear 36 is arranged at the end of the auxiliary threaded rod 33, and the main bevel gear 35 is meshed with the auxiliary bevel gear 36;

the internal thread moving block 37 is sleeved on the main threaded rod 32 and the auxiliary threaded rod 33;

one end of the claw 38 is fixedly connected with the internal thread moving block 37, the other end protrudes out of the shell 31, and the claw 38 is slidably connected with the sliding groove 312.

In order to further optimize the technical scheme, the device further comprises a hand wheel 4, wherein the hand wheel 4 is fixedly connected with one end of the main threaded rod 32 and is exposed out of the shell 31.

In order to further optimize the technical scheme, the tip 5 is arranged in the fixing groove 311.

In order to further optimize the above technical solution, the claw 38 has an L-shaped structure.

In order to further optimize the technical scheme, the end heads of the clamping jaws 38 are provided with hard rubber blocks 6.

In order to further optimize the technical scheme, the internal thread directions of the two internal thread moving blocks 37 sleeved on the main threaded rod 32 are opposite.

In order to further optimize the technical scheme, the two internal thread moving blocks 37 sleeved on the secondary threaded rod 33 have the same internal thread direction.

The using method of the invention comprises the following steps:

two ends of the shaft part are fixedly arranged in the fixing grooves 311, and the tip 5 is matched with a blind hole at the end of the shaft part.

And (3) shaking the hand wheel 4, driving the main threaded rod 32 to rotate by the hand wheel, driving the auxiliary bevel gear 36 to rotate by the main bevel gear 35, driving the internal thread moving block 37 to move towards the shaft part by the main bevel gear 35 and the auxiliary bevel gear 36 simultaneously, and finally clamping the end of the shaft part to finish fixing.

Meanwhile, the hand wheel 4 is shaken to fix the two ends of the shaft part, so that the precision of fixing the shaft part is higher.

When the disassembly is needed, the hand wheel 4 is shaken in the opposite direction.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A general machine tool positioning and clamping device is characterized by comprising an axial positioning backrest (1), a movable tailstock (2) and a fastening assembly (3);

the axial positioning backer (1) and the movable tailstock (2) are arranged in a horizontal direction correspondingly;

the fastening components (3) are respectively arranged on the axial positioning backrest (1) and the movable tailstock (2); the fastening assembly (3) comprises a shell (31), a main threaded rod (32), an auxiliary threaded rod (33), a supporting seat (34), a main bevel gear (35), an auxiliary bevel gear (36), an internal thread moving block (37) and a clamping jaw (38);

a fixing groove (311) is formed in the center of the shell (31), and four sliding grooves (312) are formed in the shell (31) in a crossed manner around the fixing groove (311) in the circumferential direction;

Two ends of the main threaded rod (32) are rotatably connected inside the shell (31) through the supporting seat (34); two ends of the auxiliary threaded rod (33) are rotatably connected inside the shell (31) through the supporting seat (34) and are respectively positioned at two sides of the main threaded rod (32); the two auxiliary threaded rods (33) are coaxially arranged and cross the main threaded rod (32);

the main bevel gear (35) is arranged in the center of the main threaded rod (32); the auxiliary bevel gear (36) is arranged at the end of the auxiliary threaded rod (33), and the main bevel gear (35) is meshed with the auxiliary bevel gear (36);

the internal thread moving block (37) is sleeved on the main threaded rod (32) and the auxiliary threaded rod (33);

one end of the clamping jaw (38) is fixedly connected with the internal thread moving block (37), the other end of the clamping jaw protrudes out of the shell (31), and the clamping jaw (38) is connected with the sliding groove (312) in a sliding mode.

2. The universal machine tool positioning and clamping device is characterized by further comprising a hand wheel (4), wherein the hand wheel (4) is fixedly connected with one end of the main threaded rod (32) and is exposed out of the shell (31).

3. A universal machine tool positioning and clamping device according to claim 1, characterized in that the fixing groove (311) is provided with a centre (5).

4. A universal machine tool positioning and clamping device according to claim 1, characterised in that the jaws (38) are L-shaped.

5. A universal machine tool positioning and clamping device according to claim 1 or 4, characterized in that the heads of the jaws (38) are provided with hard rubber blocks (6).

6. The universal machine tool positioning and clamping device as claimed in claim 1, wherein the two internal thread moving blocks (37) sleeved on the main threaded rod (32) have opposite internal thread directions.

7. The universal machine tool positioning and clamping device as claimed in claim 6, wherein the two internal thread moving blocks (37) sleeved on the secondary threaded rod (33) have the same internal thread direction.