CN210099442U

CN210099442U - Size error compensation mechanism

Info

Publication number: CN210099442U
Application number: CN201920350918.7U
Authority: CN
Inventors: 王进京; 黄文杰; 段峰; 徐征; 颜敏波
Original assignee: Hangzhou Dechuang Electronic Ltd By Share Ltd
Current assignee: Hangzhou Dechuang Electronic Ltd By Share Ltd
Priority date: 2019-03-19
Filing date: 2019-03-19
Publication date: 2020-02-21
Anticipated expiration: 2029-03-19

Abstract

The utility model discloses a size error compensation mechanism, include: the device comprises a press-mounting mechanism, a pre-pressing spring, a floating shaft and a locking cylinder; the press-fitting mechanism is positioned above the workpiece and used for performing linear motion to press the workpiece; the pre-pressing spring is arranged below the workpiece and is compressed along with the descending of the position of the workpiece; one end of the floating shaft is arranged below the prepressing spring and is fixed relative to the workpiece, the other end of the floating shaft is connected with the locking cylinder, and the locking cylinder is switched between a ventilation state and a gas cutoff state so as to switch the position of the floating shaft between a fixed state and a vertically floating state. The utility model discloses an error that causes part self size compensates, makes the depth value control of pressure equipment at more accurate within range, has improved the precision of assembly, consequently also wider to the application scope of part.

Description

Size error compensation mechanism

Technical Field

The utility model relates to the field of assembly technique, concretely relates to size error compensation mechanism.

Background

During assembly and inspection of components, it is often involved to press two parts to a fixed depth, i.e., press one part into the other, and the depth of the press fit needs to be controlled within a very precise range. And limited by processing conditions, certain size errors often exist in the parts, so that the pressed depth value is affected in the press fitting process, and the depth value is deviated.

For example, when the actual machining dimension of the part to be pressed is small, a gap is already present between the two parts after the fitting to the other part; then a portion of the press-fit depth is needed to compensate for the gap in subsequent press-fits, so that the actual press-fit depth is less than the theoretical press-fit depth. Therefore, it is necessary to design a mechanism capable of automatically compensating for dimensional errors of parts.

Disclosure of Invention

For overcoming the not enough of prior art, the utility model aims to provide a size error compensation mechanism, it can compensate the size error between the part of mutual pressure equipment, makes the degree of depth of pressure equipment can not receive size error's influence.

The utility model discloses a following technical scheme realizes:

a dimensional error compensation mechanism comprising: the device comprises a press-mounting mechanism, a pre-pressing spring, a floating shaft and a locking cylinder; the press-fitting mechanism is positioned above the workpiece and used for performing linear motion to press the workpiece; the pre-pressing spring is fixedly arranged below the workpiece and is compressed along with the descending of the position of the workpiece; one end of the floating shaft is arranged below the prepressing spring and is fixed relative to the workpiece, the other end of the floating shaft is connected with the locking cylinder, and the locking cylinder is switched between a ventilation state and a gas-off state so as to switch the position of the floating shaft between a fixed state and a vertically floating state.

Furthermore, the size error compensation mechanism also comprises a positioning tool; the workpiece is arranged in the positioning tool, and the pre-pressing spring is fixedly connected to the bottom of the positioning tool.

Further, the dimensional error compensation mechanism further comprises a guide shaft; the guide shaft is fixedly connected to the bottom of the positioning tool, and the pre-pressing spring is covered on the outer side of the guide shaft in a surrounding mode.

Further, the size error compensation mechanism also comprises a guide shaft sleeve; the guide shaft sleeve is abutted to the pre-pressing spring and fixedly sleeved on the outer side of the guide shaft.

Further, the dimensional error compensation mechanism further comprises a floating joint; one end of the floating joint is fixedly connected with the guide shaft, and the other end of the floating joint is fixedly connected with the floating shaft.

Further, the size error compensation mechanism also comprises a base; the locking cylinder is fixedly arranged in the machine base.

Further, the size error compensation mechanism also comprises a base; the locking cylinder is fixedly arranged in the machine base, a radial fixing plate is fixedly arranged on the machine base, and the radial fixing plate is fixedly sleeved on the outer side of the guide shaft sleeve.

Further, the press-fitting mechanism is a linear cylinder or a servo motor.

Compared with the prior art, the beneficial effects of the utility model are that: when the press-mounting mechanism is pressed down for the first time, the locking cylinder is ventilated to enable the floating shaft to float up and down, the workpiece and the floating shaft move down, and the pre-pressing spring is compressed; the parts are stressed and attached through the rebound force of the pre-pressing spring, and the gap is compensated; and after the locking cylinder is cut off, the floating shaft is tightly held, and the press-mounting mechanism is pressed down for the second time, so that the press-down depth of the second time is equal to the actual press-in depth of the part. The utility model discloses an error that causes part self size compensates, makes the depth value control of pressure equipment at more accurate within range, has improved the precision of assembly, consequently also wider to the application scope of part.

Drawings

FIG. 1 is a perspective view of a dimensional error compensation mechanism;

FIG. 2 is a front view of a dimensional error compensation mechanism;

fig. 3 is a sectional view of the dimensional error compensation mechanism.

In the figure: 10. a first part; 20. a second part; 30. a machine base; 40. a press-fitting mechanism; 50. positioning a tool; 60. pre-pressing a spring; 70. a guide shaft; 80. a guide shaft sleeve; 90. a radial fixing plate; 100. a floating joint; 110. a floating shaft; 120. and locking the cylinder.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

The utility model discloses a size error compensation mechanism.

In the present embodiment, the workpiece needs to be pressed, specifically, the workpiece includes a first part 10 and a second part 20, and the upper first part 10 needs to be pressed into the lower second part 20. When the size of the part has errors, the pressing depth is affected by the size errors in the pressing process, and deviation is caused.

Referring to fig. 1 to 3, the size error compensation mechanism includes: a base 30; the press-mounting mechanism 40 is arranged at the upper part of the machine base 30 and is positioned above the workpiece to be press-mounted, and when the press-mounting mechanism 40 makes linear motion in the vertical direction, the workpiece can be pressed, so that the first part 10 is pressed into the second part 20; the positioning tool 50 is a tool structure for accommodating and fixing a workpiece, and is used for positioning the workpiece, and the workpiece is arranged in the positioning tool 50; the prepressing spring 60 is arranged at the bottom of the positioning tool 50, and is compressed along with the descending of the workpiece; the guide shaft 70 is fixedly connected to the bottom of the positioning tool 50 and used for transmitting the pressing force to the floating shaft 110 below, and the prepressing spring 60 is covered on the outer side of the guide shaft 70; the guide shaft sleeve 80 is matched with the guide shaft 70, and is sleeved on the outer side of the guide shaft 70, and the upper end of the guide shaft sleeve 80 is abutted against the pre-pressing spring 60; the floating joint 100 is used as a connecting piece for connecting the guide shaft 70 and the floating shaft 110, one end of the floating joint 100 is fixedly connected with the guide shaft 70, and the other end of the floating joint 100 is fixedly connected with the floating shaft 110; the floating shaft 110 is arranged below the floating joint 100, and the positioning tool 50, the guide shaft 70 and the floating shaft 110 are connected and can transmit force; the locking cylinder 120, the locking cylinder 120 is a standard component, and one end of the floating shaft 110 is connected in the locking cylinder 120; when the locking cylinder 120 is ventilated, the floating shaft 110 is held tightly and the position is fixed; when the locking cylinder 120 is cut off, the floating shaft 110 is released, and the position of the floating shaft can float up and down; the lock cylinder 120 and the floating shaft 110 are disposed in the housing 30.

The press-fitting mechanism 40, the workpiece, the positioning tool 50, the pre-pressing spring 60, the guide shaft sleeve 80, the floating joint 100, the floating shaft 110 and the locking cylinder 120 are sequentially arranged from top to bottom.

The guide shaft 70 and the floating shaft 110 are named only by their functional features. Any shaft structure that can be adapted to perform a guiding function and a shaft structure that can be adapted to be installed in the locking cylinder 120 and to float up and down in position can be applied to this embodiment.

Wherein, the base 30 is further provided with a radial fixing plate 90; the radial fixing plate 90 is fixed in the base 30, the position of the radial fixing plate is fixed, the radial fixing plate 90 is fixedly sleeved on the outer side of the guide shaft sleeve 80, and the upper end of the guide shaft sleeve 80 is clamped on the radial fixing plate 90, so that when the positioning tool 50 descends, the lower end of the pre-pressing spring 60 can be pressed against the guide shaft sleeve 80 to be compressed. Since the pressing direction is the axial direction of the guide sleeve 80 in this embodiment, the radial fixing plate 90 is disposed to fix the guide shaft 70 in the radial direction, so that the pressing process is more stable.

Among them, the press-fitting mechanism 40 is preferably a servo motor or a linear cylinder.

The working process and working principle of the size error compensation mechanism are explained in detail as follows: placing the part on a positioning tool 50; the locking cylinder 120 is ventilated, so that the floating shaft 110 can float up and down; the press-mounting mechanism 40 presses down the workpiece for the first time, at this time, the positioning tool 50, the guide shaft 70 and the floating shaft 110 press down together, the pre-pressing spring 60 is compressed, a reverse elastic force is applied to the positioning tool 50, at this time, the positioning tool 50, the guide shaft 70 and the floating shaft 110 are pressed tightly, so that the first part 10 and the second part 20 are attached to each other, and the compensation for the gap caused by the error is realized; the locking cylinder 120 is cut off, and the floating shaft 110 is automatically clasped, so that the position of the floating shaft 110 is fixed, and the positions of the positioning tool 50 and the guide shaft 70 are also fixed; the press-fitting mechanism 40 presses the workpiece for the second time, and the position of the positioning tool 50 is fixed, so that the depth of the second pressing is the actual depth of the first part 10 in the pressing process; after the press mounting is finished, all the mechanisms reset to wait for the next press mounting.

Through the detailed explanation to above-mentioned embodiment, can understand, the utility model discloses a compensate the error that part self size caused, make the depth value control of pressure equipment at more accurate within range, improved the precision of assembly, consequently also wider to the application scope of part.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A dimensional error compensation mechanism, comprising: the device comprises a press-mounting mechanism, a pre-pressing spring, a floating shaft and a locking cylinder; the press-fitting mechanism is positioned above the workpiece and used for performing linear motion to press the workpiece; the pre-pressing spring is fixedly arranged below the workpiece and is compressed along with the descending of the position of the workpiece; one end of the floating shaft is arranged below the prepressing spring and is fixed relative to the workpiece, the other end of the floating shaft is connected with the locking cylinder, and the locking cylinder is switched between a ventilation state and a gas-off state so as to switch the position of the floating shaft between a fixed state and a vertically floating state.

2. The dimensional error compensation mechanism of claim 1, further comprising a positioning fixture; the workpiece is arranged in the positioning tool, and the pre-pressing spring is fixedly connected to the bottom of the positioning tool.

3. The dimensional error compensation mechanism of claim 2, further comprising a guide shaft; the guide shaft is fixedly connected to the bottom of the positioning tool, and the pre-pressing spring is covered on the outer side of the guide shaft in a surrounding mode.

4. The dimensional error compensation mechanism of claim 3, further comprising a guide bushing; the guide shaft sleeve is abutted to the pre-pressing spring and fixedly sleeved on the outer side of the guide shaft.

5. The dimensional error compensation mechanism of claim 3, further comprising a floating joint; one end of the floating joint is fixedly connected with the guide shaft, and the other end of the floating joint is fixedly connected with the floating shaft.

6. The dimensional error compensation mechanism of claim 1, further comprising a base; the locking cylinder is fixedly arranged in the machine base.

7. The dimensional error compensation mechanism of claim 4, further comprising a base; the locking cylinder is fixedly arranged in the machine base, a radial fixing plate is fixedly arranged on the machine base, and the radial fixing plate is fixedly sleeved on the outer side of the guide shaft sleeve.

8. The dimensional error compensation mechanism of claim 1, wherein the press-fit mechanism is a linear cylinder or a servo motor.