CN205118165U

CN205118165U - Vice device of high accuracy backlash compensation screw thread

Info

Publication number: CN205118165U
Application number: CN201520880391.0U
Authority: CN
Inventors: 顾晓林
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-11-07
Filing date: 2015-11-07
Publication date: 2016-03-30
Anticipated expiration: 2025-11-07

Abstract

The utility model discloses a vice device of high accuracy backlash compensation screw thread, the device includes the external screw thread axle, the internal thread part, conical surface throw -out collar, spring leaf and regulation threaded ring, the internal thread part includes accurate plunger, the location shaft shoulder and thrust conical surface retaining ring, thrust conical surface retaining ring is to having internal thread and external screw thread, it opens and to have the radial slot to locate the location shaft shoulder at the screw thread, conical surface throw -out collar overlaps with regulation threaded ring from interior to exterior in proper order to be established on thrust conical surface retaining ring and external screw thread, the spring leaf centre gripping is between conical surface throw -out collar and regulation threaded ring, external screw thread axle internal thread has formed zero clearance ultra -precision driving and has connected. The utility model discloses using a nut just can eliminate the vice clearance of screw thread well, having reduced the space that needs, improved job stabilization nature greatly, two screw threads of sliding pin connection are not vice owing to not fixing a position, and this simple structure is workable, has improved production efficiency, has reduced manufacturing cost.

Description

High-precision gap compensates screw pair device

Technical field

The utility model relates to backlash compensation technical field, particularly relates to a kind of high-precision gap and compensates screw pair device.

Background technique

Existing compensate for clearance screw pair device, is connected because inner thread part, Compress Spring and nut are actually double nut, the outside thread axle of connection is lengthened, cannot use in less space; End thrust loading must be less than the pre-compression force of Compress Spring, otherwise disabler; Two thread parts of location sliding pin structure do not have interchangeability, and processing technology is complicated, and manufacture cost is high.

Model utility content

For the deficiency existed in above-mentioned technology, the utility model provides a kind of high-precision gap to compensate screw pair device, and the screw pair of this model utility nut engagement, decreases the space of needs; Axially belong to and being rigidly connected, do not have thrust to be greater than pre-pressure of the spring Problem of Failure; And the gap can eliminated between screw pair, and can compensate due to the wearing clearance caused that moves.

For achieving the above object, the utility model provides a kind of high-precision gap to compensate screw pair device, comprise outside thread axle, inner thread part, conical surface throw-out collar, spring sheet and adjustment threaded collar, inner thread part comprises precision plunger, the location shaft shoulder and thrust conical surface back-up ring, thrust conical surface back-up ring is to having internal thread and outside thread, radial groove is had to the location shaft shoulder at screw thread place, conical surface throw-out collar and adjustment threaded collar are set on thrust conical surface back-up ring and outside thread from the inside to the outside successively, spring sheet is clamped in throw-out collar and regulates between threaded collar, outside thread axle internal thread defines gapless accurate and drives connection.

Wherein, described screw thread place has multiple radial groove to the location shaft shoulder, and distance often between adjacent two radial grooves is identical, and angle often between adjacent two radial grooves is equal.

Wherein, described adjustment threaded collar inwall is provided with internal thread and is threaded with outside thread.

Wherein, described spring tab inside diameter is than conical surface throw-out collar and regulate threaded collar internal diameter large.

Wherein, described conical surface throw-out collar inner ring is conical surface, and regulate threaded collar to be regular cylindrical body, spring sheet is irregular cylinder.

The beneficial effects of the utility model are: compared with prior art, this device uses a nut just can eliminate the gap of screw pair well, decrease the space of needs, owing to being axially the connection of rigidity, there is no the restricted problem of thrust loading, substantially increase the stability of work, overcome the unmanageable technological problems of highi degree of accuracy internal thread, location sliding pin is not needed to connect two screw pairs, structure is simple and easy to and processing, improve manufacturing efficiency, reduce cost of production, scheme can make the gap of screw pair be zero, and can effectively keep this state, extend the life-span of equipment.

Accompanying drawing explanation

Fig. 1 is the explosive view that high-precision gap of the present utility model compensates screw pair device;

Fig. 2 is the sectional view after Fig. 1 assembles.

Primary component symbol description is as follows:

1, outside thread axle 2, adjustment threaded collar

3, spring sheet 4, conical surface throw-out collar

5, inner thread part 51, outside thread

511, radial groove 52, thrust conical surface back-up ring

53, the shaft shoulder 54, precision plunger is located.

Embodiment

In order to more clearly state the utility model, below in conjunction with accompanying drawing, the utility model is further described.

Refer to Fig. 1-2, the high-precision gap that the utility model provides compensates screw pair device, comprise outside thread axle 1, inner thread part 5, conical surface throw-out collar 4, spring sheet 3 and adjustment threaded collar 2, inner thread part 5 comprises precision plunger 54, the location shaft shoulder 53 and thrust conical surface back-up ring 52, thrust conical surface back-up ring 52 is to having internal thread and outside thread 51, radial groove 511 is had to the location shaft shoulder 53 at screw thread place, conical surface throw-out collar 4 and adjustment threaded collar 2 are set on thrust conical surface back-up ring 52 and outside thread 51 from the inside to the outside successively, spring sheet 3 is clamped in conical surface throw-out collar 4 and regulates between threaded collar 2, outside thread axle 1 and the internal thread of inner thread part define gapless accurate and drive and be connected.

Compared to the situation of prior art, the high-precision gap that the utility model provides compensates screw pair device, this apparatus design goes out the adjustable inner thread part of effective diameter of thread 5, at threading path to opening three radial grooves 511, and distance often between adjacent two radial grooves 511 is identical, the angle often between adjacent two radial grooves 511 is equal.Under the acting in conjunction of conical surface throw-out collar 4, spring sheet 3 and adjustment threaded collar 2, shrink the thread pitch diameter of inner thread part 5.Thread pitch diameter changes, make to remain tight mesh between screw pair, eliminate screw pair driving error, add that the effect of spring sheet 3 makes screw pair can not be locked, the gap that certain pressure can be kept again to make thread part shrink thread pitch diameter compensate for wear cause, is being axially the problem not having thrust to be greater than spring force to lose efficacy that is rigidly connected simultaneously.Because structure is simple, screw pair engagement position is short, decreases requisite space.Reduce accurately machined cost.

In the present embodiment, threaded collar 2 inwall is regulated to be provided with screw thread and to be threaded with outside thread 51.Regulate threaded collar 2 to be threaded with outside thread 51, be almost that constant force contacts with outside thread axle 1 when making inner thread part 5 carry out internal diameter contraction, thus ensure that precision.

In the present embodiment, spring sheet 3 internal diameter is than conical surface throw-out collar 4 and regulate threaded collar 2 internal diameter large.Adjustment threaded collar 2 active force is uniformly distributed on spring sheet 3, and the active force of spring sheet 3 pairs of conical surface throw-out collars 4 is evenly distributed on conical surface throw-out collar 4.

In the present embodiment, conical surface throw-out collar 4 inner ring is cone, and regulate threaded collar 2 to be regular cylindrical bodies, spring sheet 3 is irregular cylinder.Certainly; it is conical surfaces that the utility model is not limited to conical surface throw-out collar 4; threaded collar 2 is regulated to be regular cylindrical bodies; spring sheet 3 is irregular cylinder; what can compensate screw pair device according to actual high-precision gap needs the change carrying out external surface shape; need conical surface throw-out collar 4 if high-precision gap compensates screw pair device, regulate the change of threaded collar 2 and spring sheet 3 external surface shape; so also can be understood as simple deformation of the present utility model or conversion, fall into protection domain of the present utility model.

In the present embodiment, the quantity of radial groove 511 is three, and distance often between adjacent two radial grooves 511 is identical, and angle often between adjacent two radial grooves 511 is equal.Certainly; the quantity that the utility model is not limited to radial groove is three; can according to actual threaded male component 5 need carry out choosing of radial groove 511 quantity; if outside thread 05 needs the radial groove 511 of other quantity; so also can be understood as simple deformation of the present utility model or conversion, fall into protection domain of the present utility model.

The utility model also provides a kind of high-precision gap to compensate the compensation method of screw pair device, after outside thread axle 1 drives inner thread part 5, by conical surface throw-out collar 4, spring sheet 3 with under regulating the common clamping action of threaded collar 2, by radial groove 511, the central diameter of inner thread part 5 is shunk, thread pitch diameter diminishes, make to keep tight mesh between outside thread axle 1 and inner thread part 5, eliminate screw pair driving error and can realize shrinking the thread pitch diameter of inner thread part 5;

At conical surface throw-out collar 4 and regulate indicator clip 3 between threaded collar 2, make screw pair can not be locked by the effect of spring sheet 3, certain pressure can be kept again;

If wearing and tearing appears in outside thread axle 1 and outside thread 51, at conical surface throw-out collar 4, spring sheet 3 with under regulating the common clamping action of threaded collar 2, shunk further by the thread pitch diameter of radial groove 511 inner thread part 5, thus the gap that compensate for wear causes.

The utility model is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection domain of the present utility model.

Claims

1. a high-precision gap compensates screw pair device, it is characterized in that, comprise outside thread axle, inner thread part, conical surface throw-out collar, spring sheet and adjustment threaded collar, described inner thread part comprises precision plunger, the location shaft shoulder and thrust conical surface back-up ring, described thrust conical surface back-up ring is to having internal thread and outside thread, radial groove is had to the location shaft shoulder at described screw thread place, described conical surface throw-out collar and adjustment threaded collar are set on thrust conical surface back-up ring and outside thread from the inside to the outside successively, described spring sheet is clamped in conical surface throw-out collar and regulates between threaded collar, described outside thread axle internal thread defines gapless accurate and drives connection.

2. high-precision gap according to claim 1 compensates screw pair device, it is characterized in that, described screw thread place has multiple radial groove to locating the shaft shoulder, and distance often between adjacent two radial grooves is identical, and angle often between adjacent two radial grooves is equal.

3. high-precision gap according to claim 1 compensates screw pair device, and it is characterized in that, described adjustment threaded collar inwall is provided with internal thread and is threaded with outside thread.

4. high-precision gap according to claim 1 compensates screw pair device, it is characterized in that, described spring tab inside diameter is than conical surface throw-out collar and regulate threaded collar internal diameter large.

5. high-precision gap according to claim 1 compensates screw pair device, and it is characterized in that, described conical surface throw-out collar inner ring is cone, and regulate threaded collar to be regular cylindrical body, spring sheet is irregular cylinder.