CN113482984A

CN113482984A - Accurate slip table cylinder

Info

Publication number: CN113482984A
Application number: CN202110775558.7A
Authority: CN
Inventors: 龙腾
Original assignee: Dongguan Carding Precision Machinery Co ltd
Current assignee: Dongguan Carding Precision Machinery Co ltd
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2021-10-08

Abstract

The invention provides a precision sliding table cylinder. The precision sliding table cylinder comprises a precision sliding table cylinder seat used for installing other parts of the sliding table cylinder; the side surface of the precise sliding table cylinder seat is fixedly connected with a telescopic cylinder and used for providing power for the whole sliding table cylinder; the output end of the telescopic cylinder is fixedly connected with a floating joint for transmitting the power of the telescopic cylinder to the precision sliding table cylinder sliding table. The precision sliding table cylinder provided by the invention has a completely ideal stress model, so that the precision of the precision sliding table cylinder is very high, the motion direction of the guide rail is overlapped with the stress direction of the rail and the sliding table, the guide rail is not subjected to additional moment, the output force of the cylinder is completely overlapped and offset with the stress of the limiting buffer, and the sliding table does not swing left and right, so that the precision of the repeated position of the precision sliding table is ensured.

Description

Accurate slip table cylinder

Technical Field

The invention relates to the technical field of sliding table cylinders, in particular to a precise sliding table cylinder.

Background

The sliding table cylinder has various types and various cylinder diameters in the market at present, the basic structure of the sliding table cylinder is composed of a cylinder part, a guide rail guide part and front and rear limiting parts, the cylinder provides power, the guide rail part guides and balances additional torque, and the moving position of the cylinder is determined by the front and rear limiting.

As shown in figure 1, the existing sliding table cylinder is composed of a guide rail 1, a rolling mechanism 2 and a sliding block 3, and has the following defects in use:

1. the use precision is limited, because various types of sliding table air cylinders on the market basically cannot completely offset the output force of the air cylinder with the limiting blocking force, taking a typical sliding table air cylinder on the market as an example, the sliding table air cylinder can generate two additional moments M1 and M2 (refer to figure 1) in the left-right direction and the up-down direction, a guide rail 1, a rolling mechanism 2 and a sliding block 3 of the sliding table air cylinder are needed to balance the additional moment generated at the part, the directions of the moments received by the sliding table air cylinder in the reciprocating way are opposite, because a ball sliding block is a kinematic pair, the sliding table air cylinder is inevitably swung repeatedly in the direction of the additional moment, the precision of the sliding table air cylinder is reduced, and in the general automatic design field, the problem cannot be serious, but in the high-precision measurement field, the reciprocating swing of the sliding table air cylinder has great influence on the measurement result, and the swing value exceeds the measurement error range, making the measurement inaccurate;

2. the sliding table can not be used in heavy oil polluted environment, because the guide rail parts of various sliding table cylinders on the market are basically exposed (refer to fig. 1), various impurities can enter the guide rail 1, the rolling mechanism 2 and the sliding block 3, such as abrasive dust and tungsten steel powder, so that the guide rail 1, the rolling mechanism 2 and the sliding block 3 are abraded, the guide rail 1, the rolling mechanism 2 and the sliding block 3 are seriously and directly clamped, the cylinder can not work, even if the cylinder can move, the precision can not be maintained, and the cylinder can only be scrapped after being functionally damaged because the guide rail 1, the rolling mechanism 2 and the sliding block 3 for guiding are abraded;

3. the service life is not high, even if the sliding table cylinder can be used in a short time at the two points 1 and 2, the accuracy of the cylinder cannot be maintained for a long time, and only a new sliding table cylinder can be replaced in order to ensure the measurement accuracy, generally, the sliding table cylinder can be damaged in a very short time because impurities enter the guide rail 1, the rolling mechanism 2 and the sliding block 3, and the sliding table accuracy is deteriorated and scrapped because the sliding table guide rail 1, the rolling mechanism 2 and the sliding block 3 repeatedly receive additional torque for a relatively long time, so that the precision sliding table cylinder existing on the market at present is not suitable for occasions where the impurities exist in the environments such as a machine tool and the high accuracy of the sliding table is required to be ensured due to oil stain;

4. the delivery period is long, the cost is high, and the commercially popular sliding table cylinder is generally produced by Japan or China Taiwan in original factories, so that the delivery time cannot be determined, and the cost is high, so that the production cannot be performed according to the plan.

Therefore, it is necessary to provide a precision slipway cylinder to solve the above technical problems.

Disclosure of Invention

The invention provides a precise sliding table cylinder, which solves the problems that the sliding table cylinder is easy to deviate and wear when used in precise measurement and occasions with low cleanliness.

In order to solve the technical problem, the precision sliding table cylinder provided by the invention comprises a precision sliding table cylinder seat, a sliding table cylinder cover and a sliding table cylinder cover, wherein the precision sliding table cylinder seat is used for installing other parts of the sliding table cylinder; the side surface of the precise sliding table cylinder seat is fixedly connected with a telescopic cylinder and used for providing power for the whole sliding table cylinder; the output end of the telescopic cylinder is fixedly connected with a floating joint for transmitting the power of the telescopic cylinder; one end of the floating joint is connected with a precision sliding table cylinder sliding table for installing a functional part; the inner side of the precision sliding table cylinder seat is fixedly connected with a ball sliding block and is used for bearing and offsetting all forces which do not move along the ball sliding block; the inner side of the precision sliding table cylinder sliding table is provided with a ball guide rail which is used for sliding along with the guide of a ball sliding block; one end fixedly connected with buffering stopper of accurate slip table cylinder block for cushion accurate slip table cylinder slip table, fix a position and the fine setting in position.

Preferably, two groups of speed regulating valves are arranged on the telescopic cylinder and used for providing power for entering and exiting compressed air and regulating the size of air flow.

Preferably, the telescopic cylinder is provided with two magnetic sensors for sensing whether the cylinder moves in place.

Preferably, the output shaft of the telescopic cylinder and the buffer limiter are on a completely coincident horizontal line, and two groups of guide rail raceways are formed in the inner side of the precision sliding table cylinder sliding table.

Preferably, two groups of guide rail raceways are symmetrically distributed on two sides of the horizontal line and used for guiding the sliding table.

Preferably, the lower surface of the precision sliding table cylinder sliding table and the inner surface of the precision sliding table cylinder seat are in a fine clearance fit, so that the effects of protection and sealing are achieved, impurities and cutting fluid are prevented from entering the inner cavity of the precision sliding table cylinder sliding table, the guide rail inside the precision sliding table cylinder sliding table is damaged, and the ball follows the sliding block.

Preferably, a plurality of mounting holes are formed in the top of the precision sliding table cylinder sliding table and used for mounting the functional part.

Preferably, the ball sliding block is hermetically arranged in an inner cavity of the precision sliding table cylinder sliding table, and a boss is arranged on the inner wall of the precision sliding table cylinder seat.

Preferably, the top of the boss is fixedly connected with the bottom of the ball sliding block, and the length of the two sides of the boss is smaller than that of the two sides of the ball sliding block.

Preferably, the ball guide rail and the ball slide block on the ball slide block are inverted, the ball guide rail is arranged on the precision sliding table cylinder sliding table, and the ball slide block is arranged on a boss of the precision sliding table cylinder seat and used for shortening the length of the precision sliding table cylinder.

Compared with the related art, the precision sliding table cylinder provided by the invention has the following beneficial effects:

the invention provides a precise sliding table cylinder, which is a completely ideal stress model, so that the precision of the precise sliding table cylinder is very high, the motion direction of a guide rail is overlapped with the stress direction of a rail and a sliding table, the guide rail is not subjected to additional torque, the output force of the cylinder is completely overlapped and offset with the stress of a limiting buffer, and the sliding table does not swing left and right any more, so that the precision of the repeated position of the precise sliding table is ensured; the ball sliding block is arranged in the inner cavity of the cylinder sliding table of the precision sliding table, the boss is arranged on the cylinder seat of the precision sliding table, the ball sliding block is arranged on the boss, and cutting fluid and foreign impurities are prevented from entering a raceway of the ball sliding block, so that the service life and the precision of the cylinder of the sliding table are ensured.

Drawings

FIG. 1 is a schematic view of a typical slipway cylinder of the prior art;

FIG. 2 is a schematic diagram of an embodiment of an application of a precision sliding table cylinder provided by the present invention;

FIG. 3 is an overall three-dimensional view of a precision slipway cylinder provided by the present invention;

FIG. 4 is a sectional view of the structure of a precision slide cylinder shown in FIG. 3;

FIG. 5 is a schematic structural view of a track of a ball slide block of a precision sliding table cylinder along the center line of the sliding table cylinder;

FIG. 6 is a schematic structural view of a cylinder output shaft of a precision sliding table cylinder, a track of a ball slider and a buffer arranged on the same straight line;

FIG. 7 is a schematic structural diagram of a top view of the precision slide cylinder shown in FIG. 3;

fig. 8 is a cross-sectional view of the whole shown in fig. 7.

Reference numbers in the figures:

1. a guide rail;

2. a rolling mechanism;

3. a slider;

4. adjusting the sliding table back and forth;

5. adjusting the sliding table up and down;

6. the device comprises a precision sliding table cylinder 61, a precision sliding table cylinder seat 611, a boss 612, a clearance mounting groove 62, a telescopic cylinder 621, a speed regulating valve 622, a magnetic sensor 63, a floating joint 64, a precision sliding table cylinder sliding table 641, a floating clamping groove 65, a ball sliding block 66, a ball guide rail 67, a buffer limiter 68, a guide rail raceway 69 and a screw;

7. a gauge head protective cover;

8. a digital sensing probe;

9. and (6) measuring the needle.

Detailed Description

The invention is further described with reference to the following figures and embodiments.

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7 and fig. 8 in combination, wherein fig. 1 is a schematic view of a typical sliding table cylinder in the prior art; FIG. 2 is a schematic diagram of an embodiment of an application of a precision sliding table cylinder provided by the present invention; FIG. 3 is an overall three-dimensional view of a precision slipway cylinder provided by the present invention; FIG. 4 is a sectional view of the structure of a precision slide cylinder shown in FIG. 3; FIG. 5 is a schematic structural view of a track of a ball slide block of a precision sliding table cylinder along the center line of the sliding table cylinder; FIG. 6 is a schematic structural view of a cylinder output shaft of a precision sliding table cylinder, a track of a ball slider and a buffer arranged on the same straight line; FIG. 7 is a schematic structural diagram of a top view of the precision slide cylinder shown in FIG. 3; fig. 8 is a cross-sectional view of the whole shown in fig. 7.

Example 1:

as shown in fig. 2 to 6, an embodiment of an application of a precision sliding table cylinder 6 includes a front and rear adjusting sliding table 4, an upper and lower adjusting sliding table 5 is provided on the front and rear adjusting sliding table 4, a precision sliding table cylinder mechanism 6 is provided on the upper and lower adjusting sliding table 5, a digital sensing side head 8 is installed on a sliding table of the precision sliding table cylinder mechanism 6, a measuring head protective cover 7 is installed outside the digital sensing side head 8, and a measuring needle 9 is fixedly connected to a detection end of the digital sensing side head 8 for precision measurement.

The precision sliding table cylinder 6 comprises a precision sliding table cylinder seat 61 and is used for installing other parts of the sliding table cylinder, and then the whole precision sliding table cylinder seat 61 is installed at other positions;

a telescopic cylinder 62 is fixedly connected to the side surface of the precision sliding table cylinder seat 61 and used for providing power for the whole sliding table cylinder and controlling the movement of the sliding table cylinder;

the output end of the telescopic cylinder 62 is fixedly connected with a floating joint 63 for transmitting the power of the telescopic cylinder 62, and the power is transmitted to a precision sliding table cylinder sliding table 64, so that the sliding table part and the cylinder piston part can float relatively, and the phenomenon that the cylinder piston is unevenly worn or directly clamped due to rigid connection is avoided;

one end of the floating joint 63 is connected with a precision sliding table cylinder sliding table 64 for installing a functional part, then transmitting force and movement to the functional part and having a positioning function;

the inner side of the precision sliding table cylinder seat 61 is fixedly connected with a ball sliding block 65 which is used for bearing and offsetting all forces which do not follow the moving direction of the ball sliding block, and the ball sliding block 65 is partially used as a guide part, so that the precision sliding table cylinder sliding table can only move along the moving direction of the ball sliding block and bear and offset all forces which do not follow the moving direction of the ball sliding block;

the inner cavity of the precision sliding table cylinder sliding table 64 is provided with a ball guide rail 66 which is used for being matched with the guide of the ball sliding block 65 to slide along;

precision sliding table cylinder block 61's one end fixedly connected with buffering stopper 67 for cushion and fix a position precision sliding table cylinder slip table 64, absorb the kinetic energy of slip table end-to-end motion, and provide accurate limit point, make the slip table cylinder action can be gentle and accurate.

Referring to fig. 3, two sets of speed regulating valves 621 are disposed on the telescopic cylinder 62 for providing power to the inlet and outlet of compressed air, two speed regulating valves 621 are disposed on the inlet and outlet of compressed air for providing power to the inlet and outlet of compressed air, and speed regulation is also provided for the forward and backward movement of the cylinder.

The telescopic cylinder 62 is provided with two magnetic sensors 622 for sensing whether the cylinder moves in place or not and sending a feedback signal to the control system so as to enable the whole sliding table cylinder to move more safely.

Referring to fig. 5 and 6, the output shaft of the telescopic cylinder 62 and the buffer stopper 67 are on a completely coincident horizontal line, and two sets of guide rail raceways 68 are formed on both sides of the ball guide 66.

Two groups of the guide rail raceways 68 are symmetrically distributed on both sides of the horizontal line for guiding.

As seen from figure 5, the output shaft of the telescopic cylinder 62 and the buffer stop 67 are on a completely coincident horizontal line, and the guide rail raceways 68 are symmetrically distributed on two sides of the horizontal line, so that the cylinder force and the stop limiting force of the stop in the direction are completely counteracted, and the guide rail is not subjected to additional force.

From the view of fig. 6, the output shaft of the telescopic cylinder 62, the guide rail raceway 68 and the buffer stop 67 are on a completely coincident horizontal line, so that the cylinder force and the stop limiting force in the direction are completely counteracted, and the guide rail is free from additional force.

The projection of the cylinder stress from two directions processes the state that the cylinder force and the limiter stress are completely balanced, and the mechanical model is optimal;

and this slip table cylinder just designs according to this ideal model, in order to reach this atress model, one end sets up buffering stopper 67 and carries out the accurate location of 1u rank, and the other end then directly sets up telescopic cylinder 62, use the spacing of cylinder itself when retracting, positioning accuracy is within 5 silks, because most of use occasions all be one end need high accuracy location, the other end then only need retract spacing can, do not need high accuracy location, for example, high accuracy measurement, therefore the accurate slip table of this kind of mechanics model is optimal design and selection in the occasion of one end accurate location.

The lower surface of the precision sliding table cylinder sliding table 64 and the inner surface of the precision sliding table cylinder seat 61 are in a fine clearance fit, the protection and sealing effects are achieved, impurities and cutting fluid are prevented from entering the inner cavity of the precision sliding table cylinder sliding table, the guide rails inside the precision sliding table cylinder sliding table are damaged, balls follow the sliding block, and the size of the precision sliding table cylinder sliding table 64 is matched with the size of the precision sliding table cylinder seat 61.

The top of the precision sliding table cylinder sliding table 64 is provided with a plurality of mounting holes for mounting the digital sensing side heads 8 and other functional parts.

The guide rail sliding block 65 is hermetically installed on the inner side of the precision sliding table cylinder sliding block 64, and a boss 611 is fixedly connected to the inner wall of the precision sliding table cylinder seat 61.

The top of the boss 611 is fixedly connected with the bottom of the rail slider 65, and the height of the side of the boss 611 is smaller than the height of the rail slider 65.

The heights of the two side surfaces of the boss 611 are smaller than the height of the sliding block, so that even if a very small amount of oil dirt enters the gap in the vertical direction, the oil dirt can not be contacted with the guide rail sliding block;

the guide rail sliding block 65 is fixed on the boss 611 on the precise sliding table cylinder seat 61 and is higher than the gap surface, and even if a very small amount of oil dirt enters the gap in horizontal use, the oil dirt can not contact with the guide rail sliding block.

The guide rail and the slide block on the guide rail slide block 65 are arranged in opposite directions and used for reducing the installation space of the guide rail and the slide block.

Place accurate slip table cylinder slider 64 the inside in with guide rail slider 65, then accurate slip table cylinder block 61 design is used for installing the ball slider with boss 611, boss 611 both sides are interior to contract, make the slip table cylinder no matter be level or vertical placing, guide rail slider 65 can not contact with the greasy dirt that the seepage came in all the time, see from the actual effect, adopt the slip table cylinder of foreign certain first-class brand, because guide rail slider exposes, the spoilage within a year has about 10%, and use this slip table cylinder then to no damage record so far, thereby demonstrate success and the reliability of this sealed design.

complete ideal atress design, make precision of accurate slip table cylinder very high, because the guide rail no longer receives load torque's influence, cylinder output power offsets with the complete coincidence of spacing buffer atress, and the motion track of guide rail itself and slip table atress coincide completely, so the guide rail no longer receives additional moment, the side deflection just can no longer appear in the slip table like this, the repetitive position precision of accurate slip table has been guaranteed, set up the ball slider in accurate slip table cylinder slip table inner chamber, and be provided with the boss at close slip table cylinder block, install the ball slider on this boss, cutting fluid and foreign matter have been stopped and have got into in the raceway of ball slider, thereby the life-span and the precision of slip table cylinder have been guaranteed.

Further:

referring to fig. 7 and 8, a clearance mounting groove 612 is formed on the precision sliding table cylinder seat 61;

a floating clamping groove 641 is formed in the precision sliding table cylinder sliding table 64;

the telescopic cylinder 62 is a thin cylinder, and the output end of the telescopic cylinder 62 is connected with a screw 69.

In cooperation with the inverted structure of the guide rail and the slider, the floating joint is replaced by the screw 69 and the integrated floating clamping groove 641;

the withdrawal end is cancelled to be limited, and the thin cylinder is directly limited by the limiting structure, so that the sliding table cylinder has the effects of small size and production cost reduction, and the competitiveness of the sliding table cylinder on the market under the premise of ensuring the use function is ensured.

Integrally realize that:

the sliding table is simple in structure, small in size and low in cost, only two manufacturing parts are used in the design of the sliding table, all other standard parts are available, the size can be made small as much as possible by the simple design structure, the smaller size of a product at the same grade means a wider application scene, and sliding table cylinders are distributed in the movement direction as much as possible, so that the sliding table has very obvious advantages in the size in the width direction and the height direction except the length direction; the use of a large amount of standards makes the preparation low cost of slip table cylinder, and only original slip table 1/4 ~ 1/5's cost, when obtaining promoting in the aspect of the performance, the competitiveness of product has been improved greatly to cheap cost of manufacture.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a precision slip table cylinder which characterized in that:

the device comprises a precision sliding table cylinder seat, a sliding table cylinder and a sliding table, wherein the precision sliding table cylinder seat is used for installing other parts of the sliding table cylinder;

the side surface of the precise sliding table cylinder seat is fixedly connected with a telescopic cylinder and used for providing power for the whole sliding table cylinder;

the output end of the telescopic cylinder is fixedly connected with a floating joint for transmitting the power of the telescopic cylinder;

one end of the floating joint is connected with a precision sliding table cylinder sliding table for installing a functional part;

the inner side of the precision sliding table cylinder seat is fixedly connected with a ball sliding block and is used for bearing and offsetting all forces which do not move along the ball sliding block;

the inner side of the precision sliding table cylinder sliding table is provided with a ball guide rail which is used for sliding along with the guide of a ball sliding block;

one end fixedly connected with buffering stopper of accurate slip table cylinder block for cushion accurate slip table cylinder slip table, fix a position and the fine setting in position.

2. The precision sliding table cylinder according to claim 1, wherein two sets of speed regulating valves are arranged on the telescopic cylinder and used for providing power for entering and exiting compressed air and regulating the size of air flow.

3. The precision sliding table cylinder according to claim 2, wherein two magnetic sensors are arranged on the telescopic cylinder and used for sensing whether the cylinder moves in place.

4. The precision sliding table cylinder according to claim 1, wherein the output shaft of the telescopic cylinder and the buffer stopper are on a completely coincident horizontal line, and two sets of guide track raceways are provided on the inner side of the precision sliding table cylinder.

5. The precision sliding table cylinder according to claim 4, wherein two sets of guide rail raceways are symmetrically distributed on two sides of a horizontal line for guiding the sliding table.

6. The precision sliding table cylinder according to claim 1, wherein a small clearance fit is provided between the lower surface of the precision sliding table cylinder and the inner surface of the precision sliding table cylinder seat, so as to protect and seal the precision sliding table cylinder seat, and prevent impurities and cutting fluid from entering the inner cavity of the precision sliding table cylinder and further damaging the guide rail therein and the ball follower.

7. The precision sliding table cylinder according to claim 1, wherein a plurality of mounting holes are provided at a top portion of the precision sliding table cylinder sliding table for mounting the functional part.

8. The precision sliding table cylinder according to claim 1, wherein the ball slider is sealingly mounted in an inner cavity of the precision sliding table cylinder block, and a boss is provided on an inner wall of the precision sliding table cylinder block.

9. The precision sliding table cylinder according to claim 8, wherein the top of the boss is fixedly connected with the bottom of the ball sliding block, and the length of the two sides of the boss is smaller than that of the two sides of the ball sliding block.

10. The precision slide cylinder of claim 8, wherein the ball guide on the ball slide and the ball slide are inverted, the ball guide is mounted on the precision slide cylinder slide, and the ball slide is mounted on a boss of the precision slide cylinder block for reducing the length of the precision slide cylinder.