CN211052565U

CN211052565U - Differential chuck device

Info

Publication number: CN211052565U
Application number: CN201921849455.5U
Authority: CN
Inventors: 杨乐; 程鸥
Original assignee: Hebei Chengjie Automobile Steering Machine Manufacturing Co ltd
Current assignee: Hebei Chengjie Automobile Steering Machine Manufacturing Co ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-07-21
Anticipated expiration: 2029-10-30

Abstract

The utility model provides a differential chuck device, including disk body, differential dish and locking mechanism, wherein, the disk body rotates with the lathe spindle to be connected, and the disk body hinge is equipped with at least three connecting rod. The differential disk is positioned in the disk body and is rotationally connected with the disk body, and at least three clamping jaws used for clamping workpieces are hinged on the differential disk. The locking mechanism is used for preventing the differential disc from rotating relative to the disc body. The connecting rods correspond to the clamping jaws one to one, one ends of the clamping jaws are hinged to the corresponding connecting rods respectively, and the middle positions of the clamping jaws are hinged to the differential disk and used for driving the clamping jaws to rotate and clamp a workpiece when the disk body and the differential disk form a rotating speed difference value. The utility model provides a speed difference that differential chuck passed through between disk body and differential dish and formed to drive connecting rod pulling jack catch rotates and presss from both sides tight work piece, and lock through locking mechanism to the differential dish and die, its simple structure, the practicality is strong, can use manpower sparingly the process of centre gripping, improves the dress card efficiency of work piece, and can reduce the processing cost of work piece.

Description

Differential chuck device

Technical Field

The utility model belongs to the technical field of the chuck, more specifically say, relate to a differential chuck device.

Background

The chuck is a lathe accessory which clamps and positions a workpiece by radial movement of a plurality of movable clamping jaws uniformly distributed on a chuck body.

In the prior art, in the processing of large-batch shaft parts, a manual or hydraulic chuck is still adopted to clamp the parts. In the process of clamping the manual chuck, the labor intensity of an operator is high when a workpiece is loaded and unloaded, the labor and the time are wasted, and the efficiency is not high. The hydraulic chuck is adopted to clamp the shaft parts, the early investment cost of the equipment tool is high, faults are easy to occur in the using process, the maintenance cost is high, and the processing cost is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a differential chuck device aims at solving the current chuck dress card inefficiency and the higher problem of processing cost.

In order to achieve the above object, the utility model adopts the following technical scheme: provided is a differential chuck apparatus including: the lathe comprises a lathe body, a lathe spindle and a lathe spindle, wherein the lathe body is used for being rotatably connected with the lathe spindle and is hinged with at least three connecting rods;

The differential disc is positioned in the disc body and is rotationally connected with the disc body, and at least three clamping jaws for clamping workpieces are hinged on the differential disc; and

The locking mechanism is used for preventing the differential disc from rotating relative to the disc body;

The connecting rods are in one-to-one correspondence with the clamping jaws, one ends of the clamping jaws are hinged to the corresponding connecting rods respectively, and the middle positions of the clamping jaws are hinged to the differential disk and used for driving the clamping jaws to rotate and clamp a workpiece when a rotating speed difference value is formed between the disk body and the differential disk.

As another embodiment of the present application, the locking mechanism includes:

The ratchet wheel is used for being fixed on the peripheral surface of the differential disk; and

And the pawl is used for being matched with the ratchet wheel, hinged or arranged on the tray body in a sliding manner.

As another embodiment of this application, locking mechanism still includes the spring, the one end of spring with pawl looks butt, the other end with disk body looks butt is used for making the pawl kick-backs and continuously keep with the teeth of a cogwheel of ratchet cooperatees the butt.

As another embodiment of the present application, a driving assembly is connected to the pawl for driving the pawl to slide along a radial direction of the ratchet wheel and disengage from the ratchet wheel, and the driving assembly includes:

The first sliding block is arranged in the disc body and is connected with the pawl;

The second sliding block is arranged in the disc body, is connected with the first sliding block and is used for driving the first sliding block to slide along the radial direction of the ratchet wheel; and

And one end of the manual operating rod is connected with the second sliding block, and the other end of the manual operating rod extends out of the disc body and is used for controlling the second sliding block to slide.

As another embodiment of the present application, at least two pawls are provided, and the positions of the pawls are opposite; each pawl corresponds to one first sliding block, each first sliding block corresponds to one second sliding block, and a rack is arranged on one side of each second sliding block, which faces to the center of the circle of the disc body;

And a gear is further arranged in the disc body, and gear teeth of the gear are meshed with the rack and used for enabling the plurality of second sliding blocks to synchronously slide.

As another embodiment of the present application, the differential disc is step-shaped, and includes a first circular truncated cone, a second circular truncated cone, and a third circular truncated cone;

The first round platform and the third round platform are respectively connected with the disc body in a rotating mode, and the outer peripheral face of the second round platform is fixedly connected with the ratchet wheel.

As another embodiment of the present application, a bearing is disposed between the disk body and the first circular truncated cone.

As another embodiment of the application, the differential disc is flush with the end surface of the disc body;

A first fixed shaft is arranged between each connecting rod and the disc body, and one end of each connecting rod is hinged with the corresponding first fixed shaft;

And a second fixed shaft is arranged between each clamping jaw and the differential disk, and the clamping jaws are hinged with the corresponding second fixed shafts.

As another embodiment of the application, the first fixed shafts are positioned on one side surface of the disc body and are arranged annularly at intervals;

The second fixed shaft is positioned on one side surface of the differential disk and is arranged annularly at intervals.

As another embodiment of the present application, a plurality of sets of shaft holes for fixing the second fixing shaft are formed on the differential disc, and are used for adjusting the hinge positions of the jaws to clamp workpieces of different specifications;

And each group of shaft holes are distributed at intervals along the radial direction of the differential disk.

The utility model provides a differential chuck device's beneficial effect lies in: compared with the prior art, the utility model discloses differential chuck device main part comprises the disk body and the differential dish that is located the disk body, its simple structure. The differential disk is hinged with three clamping jaws, the hinging point of each clamping jaw and the differential disk is located in the middle of each clamping jaw, and each clamping jaw can rotate relative to the differential disk so as to clamp a workpiece conveniently. The tray body is hinged with three connecting rods, each connecting rod is hinged with the corresponding clamping jaw, the clamping jaws can be dragged to rotate by pulling the connecting rods, workpieces are clamped, and the process of clamping the workpieces can be simplified. When the disc body starts to rotate in an accelerated mode, the differential disc is accelerated under the action of the tension of the connecting rod, and a rotating speed difference is formed between the differential disc and the disc body, so that the connecting rod pulls the clamping jaws to rotate relative to the differential disc, and a workpiece is clamped. When the disk body and the differential disk are in differential speed, the locking mechanism locks the differential disk to prevent the differential disk from rotating due to stress. The utility model provides a speed difference and the lock of locking mechanism that differential chuck device formed through between disk body and differential dish are died, and drive connecting rod pulling jack catch rotates and presss from both sides tight work piece, its simple structure, and the practicality is strong, can use manpower sparingly the process of centre gripping, improves the dress card efficiency of work piece to can reduce the processing cost of work piece.

Drawings

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

Fig. 1 is a schematic structural view of a differential chuck apparatus according to an embodiment of the present invention;

Fig. 2 is a schematic view of a structure (hidden plate body) of a differential chuck device according to an embodiment of the present invention;

Fig. 3 is a schematic view of a differential plate structure of a differential chuck apparatus according to an embodiment of the present invention;

Fig. 4 is a schematic structural view of a locking mechanism of the differential chuck apparatus according to an embodiment of the present invention (a portion of the disk body is hidden);

Fig. 5 is a schematic front view of the differential chuck apparatus according to the embodiment of the present invention;

3 FIG. 3 6 3 is 3 a 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 3 5 3 ( 3 hiding 3 part 3 of 3 the 3 tray 3 body 3) 3; 3

In the figure: 10. a tray body; 11. a first fixed shaft; 20. a differential disc; 21. a first circular table; 22. a second circular table; 23. a third round table; 24. a second fixed shaft; 30. a connecting rod; 40. a claw; 50. a locking mechanism; 51. a ratchet wheel; 52. a pawl; 53. a spring; 60. a drive assembly; 61. a first slider; 62. a second slider; 63. a manual operating lever; 64. a gear; 70. a bearing; 80. and (5) a workpiece.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 6 together, the differential chuck apparatus of the present invention will now be described. The differential chuck apparatus includes a disk body 10, a differential disk 20, and a locking mechanism 50. Wherein, the disk body 10 is connected with a main shaft of a lathe and rotates along with the main shaft. The differential disk 20 is disposed inside the disk body 10 and is rotatable within the disk body 10. Three connecting rods 30 are hinged on the disc body 10, three clamping jaws 40 are hinged on the differential disc 20, the other end of each connecting rod 30 is hinged with one end of the corresponding clamping jaw 40, the other end of each clamping jaw 40 is used for clamping a workpiece 80, and the middle position of each clamping jaw 40 is hinged with the differential disc 20. The locking mechanism 50 is disposed between the disk body 10 and the differential disk 20, and can prevent the differential disk 20 from rotating relative to the disk body 10 due to a force.

The utility model provides a differential chuck device, the theory of operation does: in the process that the main shaft drives the disc body 10 to rotate, an acceleration process is generated, the differential disc 20 in the disc body 10 can still keep a static state due to the inertia effect, the differential disc 20 rotates along with the rotation of the differential disc under the tension effect of the connecting rod 30, but the speed of the differential disc does not reach the rotation speed of the disc body 10, a rotation speed difference value is formed between the differential disc 20 and the rotation speed, and then the connecting rod 30 pulls the jaws 40 to rotate, so that the workpiece 80 between the jaws 40 is clamped. After clamping, the rotational speeds of the disk body 10 and the differential disk 20 are identical. When the speed difference is formed between the disk body 10 and the differential disk 20, the locking mechanism 50 locks the differential disk 20 at all times to prevent the differential disk 20 from rotating relative to the disk body 10.

The utility model provides a differential chuck device, compared with the prior art, the utility model discloses differential chuck device main part comprises disk body 10 and the differential dish 20 that is located disk body 10, its simple structure. Three clamping jaws 40 are hinged to the differential disk 20, the hinge points of the clamping jaws 40 and the differential disk 20 are located in the middle positions of the clamping jaws 40, and each clamping jaw 40 can rotate relative to the differential disk 20 so as to clamp a workpiece 80 conveniently. Three connecting rods 30 are hinged on the disc body 10, each connecting rod 30 is hinged with the corresponding jaw 40, the jaws 40 can be dragged to rotate by pulling the connecting rods 30, the workpiece 80 can be clamped, and the process of clamping the workpiece 80 can be simplified. When the disc body 10 starts to rotate in an accelerated mode, the differential disc 20 is accelerated under the action of the pulling force of the connecting rod 30, and a rotating speed difference is formed between the differential disc 20 and the connecting rod 30, so that the connecting rod 30 pulls the clamping jaws 40 to rotate relative to the differential disc 20, and a workpiece 80 is clamped. The locking mechanism 50 locks the differential disk 20 to prevent the differential disk 20 from rotating due to a force while the disk body 10 and the differential disk 20 are differentially driven. The utility model provides a speed difference and the lock of locking mechanism 50 that differential chuck device passes through to form between disk body 10 and differential dish 20 dies, and drive connecting rod 30 stimulates jack catch 40 and rotates and press from both sides tight work piece 80, its simple structure, and the practicality is strong, can use manpower sparingly the process of centre gripping, improves the dress card efficiency of work piece 80 to can reduce the processing cost of work piece 80.

As an embodiment of the differential chuck apparatus provided in the present invention, please refer to fig. 1 to 6 together, the locking mechanism 50 includes a ratchet 51 and a pawl 52. The ratchet wheel 51 is fixed to the outer peripheral surface of the differential disk 20 and rotates together with the differential disk 20. The pawl 52 is hinged or slidably disposed on the tray 10, and one end of the pawl 52 abuts against the teeth of the ratchet 51, so that the ratchet 51 is only limited to rotate toward the tray 10. The gear type ratchet 51 mechanism is adopted, so that the structure is simple and the manufacture is convenient. And the differential disk 20 can be effectively locked, so that the clamping force of the clamping claws 40 can be effectively ensured.

As a specific embodiment of the differential chuck device provided in the present invention, please refer to fig. 1 to 6 together, the locking mechanism 50 further includes a spring 53, one end of the spring 53 abuts against the pawl 52, the other end abuts against the disk body 10, and the spring 53 can make the pawl 52 rebound and continuously keep the gear teeth of the ratchet 51 to match with the abutment. The arrangement of the spring 53 further ensures that the ratchet 51 does not rotate, thereby effectively ensuring the clamping force of the jaws 40.

In this embodiment, the ratchet 51 is fixed to the differential disk 20 by a positioning key, and the ratchet 51 and the differential disk 20 rotate synchronously.

As an embodiment of the differential chuck apparatus of the present invention, please refer to fig. 1 to fig. 6, the pawl 52 is connected to a driving assembly 60 for driving the pawl 52 to slide along the radial direction of the ratchet 51 and separate from the ratchet 60, and the driving assembly 50 includes a first slider 61, a second slider 62 and a hand lever 63. The first sliding block 61 is arranged in the disc body 10, connected with the pawl 52 and used for driving the pawl 52 to slide along the radial direction of the ratchet wheel 51 and be far away from the ratchet wheel 51, the first sliding block 61 is connected with the pawl 52 through a limiting column, the limiting column and the first sliding block 61 are of an integral structure, the limiting column is inserted into the pawl 52 and used for limiting the extending length of the pawl 52 under the action of the spring 53, and meanwhile, the pawl 52 is driven to compress the spring 53, so that the pawl 52 can release the ratchet wheel 51, and the workpiece 80 can be taken out. And the second sliding block 62 is arranged in the disk body 10, is connected with the first sliding block 61, and is used for driving the first sliding block 61 to slide along the radial direction of the ratchet wheel 51, wherein the moving direction of the second sliding block 62 is perpendicular to the moving direction of the first sliding block 61, and the two are connected through a meshed oblique tooth-shaped structure (non-self-locking structure). And one end of the manual operating rod 63 is connected with the second sliding block 62, and the other end of the manual operating rod extends out of the disk body 10 and is used for controlling the second sliding block 62 to slide. The second sliding block 62 is controlled by the manual operating rod 63, and then the first sliding block 61 and the pawl 52 are driven, so that the limiting operation is stopped, and the workpiece 80 can be conveniently dismounted.

The tray body 10 is provided with a slide groove in which the ratchet 52, the first slider 61, and the second slider 62 slide. The hand-operated lever 63 can pass through the second sliding block 62, the two are connected through a screw nut structure, and the second sliding block 62 slides through the rotation of the hand-operated lever 63 operated outside the disc body 10; or directly connected with the second slider 62, and the second slider 62 can be slid by pressing a hand lever 63 outside the disk body 10.

As an embodiment of the differential chuck apparatus according to the embodiment of the present invention, please refer to fig. 1 to 6, at least two pawls 52 are provided and the positions thereof are opposite to each other. Each pawl 52 corresponds to a first slide block 61, each first slide block 61 corresponds to a second slide block 62, and a side surface of the second slide block 62 facing the center of the disk 10 is provided with a rack. A gear 64 is further disposed in the tray body 10, and teeth of the gear 64 are engaged with the rack for synchronously sliding the plurality of second sliders 62. The two pawls 52 can further limit the ratchet 51 to prevent the differential disk 20 from rotating. The gear 64 can ensure that the two second sliding blocks 62 can synchronously slide, so that the first sliding block 61 and the pawl 52 synchronously slide.

As a specific implementation manner of the differential chuck apparatus provided in the embodiment of the present invention, please refer to fig. 1 to fig. 6, the differential disk 20 is step-shaped, and includes a first circular truncated cone 21, a second circular truncated cone 22 and a third circular truncated cone 23, that is, the differential disk 20 is step-shaped. The first round platform 21 and the third round platform 23 are respectively connected with the plate body 10 in a rotating way, and the ratchet wheel 51 is sleeved on the peripheral surface of the second round platform 22. The structure is convenient for the installation of the locking mechanism 50 in the tray body 10, and can avoid the problem of circumferential movement of the differential tray 20, and can save the occupied space of the ratchet wheel 51, and the structure is simple and the actual use effect is good.

The preferred embodiment is as follows: the first, second and third round tables 21, 22, 23 have diameters that gradually increase.

As a specific implementation manner of the differential chuck apparatus provided in the embodiment of the present invention, please refer to fig. 1 to 6 together, a bearing 70 is disposed between the disk body 10 and the first circular truncated cone 21, so as to reduce the friction between the disk body 10 and the differential disk 20, and enable the stress of the differential disk 20 to be from the connecting rod 30, thereby facilitating the formation of the rotation speed difference.

As a specific implementation manner of the differential chuck apparatus provided in the embodiment of the present invention, please refer to fig. 1 to fig. 6, a first fixing shaft 11 is disposed between each connecting rod 30 and the disk body 10, and one end of each connecting rod 30 is hinged to the corresponding first fixing shaft 11. A second fixed shaft 24 is arranged between each claw 40 and the differential disk 20, and the claws 40 are hinged with the corresponding second fixed shaft 24. The hinged position of the jaw 40 with the second fixed shaft 24 is located at the middle part of the jaw 40. One end of the jaw 40 is hinged to the other end of the connecting rod 30. This configuration facilitates the jaw 40 gripping the workpiece 80 and also facilitates the pulling of the jaw 40. The differential disk 20 is flush with the end surface of the disk body 10 to ensure that the stress of the connecting rod 30 and the clamping jaws 40 is in the same plane and ensure that the clamping force can be vertical to the workpiece 80.

As a specific implementation manner of the differential chuck apparatus provided by the embodiment of the present invention, please refer to fig. 1 to 6 together, the first fixing shaft 11 is located at a side of the disk body 10, and is disposed at an interval in an annular shape, and the second fixing shaft 24 is located at a side of the differential disk 20, and is disposed at an interval in an annular shape. One end face of the tray body 10 is flush with one end face of the differential tray 20, the differential tray 20 is located inside the tray body 10, the first fixing shaft 11 is located on the end face of the tray body 10 on the outermost periphery, and the second fixing shaft 24 is located on the end face of the differential tray 20 on the inner side, so that the stress of the connecting rod 30 and the clamping jaws 40 is located on the same plane, and the clamping stability of the clamping jaws 40 is guaranteed.

As a specific implementation manner of the differential chuck apparatus provided in the embodiment of the present invention, please refer to fig. 1 to fig. 6, a plurality of sets of shaft holes for fixing the second fixing shaft 24 are provided on the differential disk 20 for adjusting the hinge positions of the jaws 40 to clamp the workpieces 80 with different specifications. Each set of shaft holes are distributed along the radial direction of the differential disk 20 at intervals, namely, the second fixed shaft 24 can select the adaptive shaft holes along with the specific clamping work, so that the clamping jaws 40 can clamp workpieces 80 with different diameters.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A differential chuck device, comprising:

The lathe comprises a lathe body, a lathe spindle and a lathe spindle, wherein the lathe body is used for being rotatably connected with the lathe spindle and is hinged with at least three connecting rods;

2. The differential chuck apparatus as claimed in claim 1, wherein said locking mechanism comprises:

3. The differential chuck assembly as claimed in claim 2, wherein said locking mechanism further includes a spring having one end abutting said pawl and the other end abutting said plate for allowing said pawl to rebound and remain in mating abutment with the teeth of said ratchet wheel.

4. The differential chuck assembly according to claim 3, wherein a drive assembly is connected to said pawl for sliding said pawl in a radial direction of said ratchet wheel and disengaging said ratchet wheel, said drive assembly comprising:

The first sliding block is arranged in the disc body, and the pawl is arranged on the first sliding block;

5. The differential chuck assembly according to claim 4, wherein said pawls are provided in at least two, oppositely located positions; each pawl corresponds to one first sliding block, each first sliding block corresponds to one second sliding block, and a rack is arranged on one side of each second sliding block, which faces to the center of the circle of the disc body;

6. The differential chuck apparatus according to claim 5, wherein the differential disk is stepped in shape, including a first circular table, a second circular table, and a third circular table;

7. The differential chuck assembly as claimed in claim 6, wherein a bearing is provided between said body and said first truncated cone.

8. The differential chuck assembly according to any one of claims 1 to 7, wherein the differential disk is flush with the end surface of the disk body;

9. The differential chuck assembly according to claim 8, wherein said first fixed shafts are disposed annularly and at intervals on one side of said body;

10. The differential chuck assembly as claimed in claim 9, wherein the differential disk is provided with a plurality of sets of shaft holes for fixing the second fixing shaft, for adjusting the hinge positions of the jaws to grip workpieces of different specifications;