CN116038557A

CN116038557A - Grinding clamping device

Info

Publication number: CN116038557A
Application number: CN202211489631.5A
Authority: CN
Inventors: 张云庭; 何铠锋; 罗付强; 杨鑫; 刘宏岩; 罗凤吉; 雷扬; 杨健
Original assignee: Chongqing Hongjiang Machinery Co Ltd
Current assignee: Chongqing Hongjiang Machinery Co Ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-05-02

Abstract

The invention relates to a grinding clamping device, which comprises a positioning mandrel and a driving disc, wherein the driving disc can rotate, the positioning mandrel penetrates through the driving disc, a driving block capable of elastically rotating is arranged on the driving disc, a positioning part is arranged at the end part of the driving block, when the positioning mandrel positions a middle hole of a needle valve body to be machined, the driving block rotates positively under the extrusion of the needle valve body to be machined, and when the driving disc rotates to a certain position, the positioning part enters into a pin hole of the needle valve body to be machined under the action of elastic force, or other parts connected with the positioning part are driven to enter into the pin hole of the needle valve body to be machined, so that the driving block rotates reversely. According to the invention, the positions of the driving rod and the pin hole of the needle valve body are not required to be corrected manually, the variety processing and switching is only required to replace the positioning mandrel and the driving block, the action of the positioning needle valve body is simplified, and the driving pin is prevented from being impacted and pressed radially for a long time.

Description

Grinding clamping device

Technical Field

The invention relates to the technical field of automation, in particular to a clamping technology of a needle valve body.

Background

As shown in figure 1, the needle valve body is a cylindrical needle valve body with multistage outer circles, a middle hole 11 is formed in the center of the end face of the cylindrical needle valve body, a pin hole 12 is formed in the eccentric position of the cylindrical needle valve body, the needle valve body is positioned at the axis of the middle hole 11 in grinding machine processing, and a rotating shaft of the grinding machine is connected with a driving sleeve with a pin to drive the needle valve body to rotate. The traditional manual production process is to put the needle valve body on the positioning shaft, rotate the needle valve body to enable the pin hole 12 to be aligned with the driving pin for insertion, the action is complex, and the driving pin is impacted and pressed radially for a long time, so that the service life is short.

Disclosure of Invention

The invention aims to provide a grinding clamping device, which aims to solve the problem that the service life of a needle valve body is shortened in order to clamp the needle valve body in the prior art.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

the utility model provides a milling clamping device, includes location mandrel and driving disk, the driving disk is rotatable, the location mandrel passes the driving disk, be equipped with but elastic rotation's driving piece on the driving disk, the tip of driving piece has location portion, when the centre bore of the needle valve body of waiting to process is fixed a position to the location mandrel, the driving piece is positive rotation under the extrusion of the needle valve body of waiting to process, works as the driving disk rotates to a certain position, location portion gets into under the effect of elasticity the pinhole of the needle valve body of waiting to process is inside, or the drive gets into with other parts that location portion is connected the pinhole of the needle valve body of waiting to process is inside, makes the reverse rotation of driving piece.

According to the technical means, the positions of the driving rod and the pin hole of the needle valve body are not required to be corrected manually, the multi-variety processing and switching can be realized by only replacing the positioning shaft and the driving block, and when the needle valve body is pressed on the driving block to rotate due to the fact that the driving block is in flexible contact with the needle valve body at the moment when the needle valve body is fed, the driving block rotates to a proper position after the needle valve body is placed, and the needle valve body is driven to rotate due to the fact that the driving block is rigidly contacted after being inserted into the pin hole under the action of elastic force.

Further, still include clamping mechanism, clamping mechanism includes the clamp cylinder, be equipped with first slider and second slider on the clamp cylinder, the clamp cylinder can make first slider and second slider move in opposite directions or dorsad, be equipped with first gyro wheel and second gyro wheel on first slider and the second slider respectively for both can press from both sides tightly or loosen under the drive of clamp cylinder the needle valve body of waiting to process.

According to the technical means, the first roller and the second roller are arranged, and the action of clamping and loosening the needle valve body is controlled by means of the telescopic control of the air cylinder, so that the needle valve body cannot be positioned excessively, the workpiece replacing process is simplified, the clamping force is regulated through air pressure, and the size of the clamping force can be controlled stably.

Further, the first roller and the second roller are the same in height, the radial sections of the first roller and the second roller are obliquely arranged relative to the axial direction of the positioning mandrel, the inclination angles of the first roller and the second roller are the same, and the inclination directions are opposite.

Further, the device also comprises a proximity sensor and a sliding rod, wherein the sliding rod is arranged on the driving disc, the sliding rod is overlapped with one end, far away from the positioning part, of the driving block, the proximity sensor is fixedly arranged, when the driving block rotates forwards, the sliding rod extends out and triggers the proximity sensor, and when the driving block rotates reversely, the sliding rod retracts and does not trigger the proximity sensor.

Further, the device is provided with a jacking mechanism, the jacking mechanism comprises a jacking cylinder, a conical tip is connected to a telescopic shaft of the jacking cylinder, and the conical tip can extend out and be pressed on the head of the needle valve body to be processed.

Further, when the proximity sensor loses the pulse, the jacking cylinder drives the conical tip to retract.

Further, the positioning portion or other members to which the positioning portion is connected can move along the pitch circle tangential direction of the pin hole of the needle valve body to be processed.

Further, the two ends of the driving block are respectively provided with a first tip and a second tip, the first tip forms the positioning part, and the second tip is overlapped with the sliding rod.

Further, the driving plate is provided with a stepped hole, the sliding rod is placed inside the stepped hole, and an elastic piece is arranged between the bottom of the sliding rod and the step of the stepped hole.

Further, the first tip is detachably connected with the driving block.

The invention has the beneficial effects that:

according to the invention, the positions of the driving rod and the pin hole of the needle valve body are not required to be corrected manually, the variety processing and switching only needs to replace the positioning mandrel and the driving block, the action of the positioning needle valve body is simplified, and the driving pin is prevented from being impacted and pressed radially for a long time;

according to the invention, the clamping step is optimized, the needle valve body is manually sleeved on the positioning shaft, and the action of clamping and loosening the needle valve body is controlled by means of telescopic control of the clamping cylinder, so that the manpower resource is saved, and the manpower cost is reduced;

the invention is provided with the proximity sensor and the sliding rod, is used for automatically detecting whether the driving block completes the positioning of the pin hole, and replaces manual confirmation of whether the needle valve body is accurate or not while simplifying manual operation, thereby ensuring the safety of the novel device;

the needle valve body is tightly propped by the cylinder after the needle valve body is placed, the motor is started, so that the needle valve body and the driving block relatively rotate until the driving block is clamped into the pin hole of the needle valve body, automatic assembly and clamping are completed in place, the labor cost is further saved, and the working efficiency is improved.

Drawings

FIG. 1 is a schematic view of a needle valve body;

fig. 2 is a schematic diagram of the device structure according to the present embodiment;

FIG. 3 is a schematic view of a clamp needle valve body including a drive mechanism and a clamp mechanism;

FIG. 4 is an exploded view of the drive mechanism;

FIG. 5 is a schematic view showing a state in which the driving block is not inserted into the pin hole;

FIG. 6 is a schematic view showing a state in which the driving block is inserted into the pin hole;

FIG. 7 is a schematic view of a clamping mechanism;

FIG. 8 is a schematic diagram of the engagement of the needle valve body with the clamping mechanism, wherein A is the axis of the first roller and the second roller; b is a radial section axial line diagram of the needle valve body; c is the rotation direction of the needle valve body;

FIG. 9 is a schematic view of the structure of the tightening mechanism;

FIG. 10 is a state diagram of the device prior to clamping the needle valve body;

FIG. 11 is a state diagram of the device after clamping the needle valve body;

FIG. 12 is a schematic view of the spring plunger moving away from the proximity sensor with the drive disk rotated into the drive block insertion pin bore;

FIG. 13 is a schematic view of the drive disk rotated into the drive block insertion pin bore;

FIG. 14 is a schematic view showing a state in which a clamping mechanism clamps a needle valve body against a cylinder to retract and is ready for processing;

fig. 15 is a schematic view showing a state in which the clamping mechanism clamps the needle valve body.

Wherein, 1-needle valve body; 11-mesopores; 12-pin holes; 2-a driving mechanism; 201-Morse taper shank; 202-positioning the mandrel; 203-left-handed bearing cap; 204-bearings; 205-left-handed bearing locking buckle; 206-driving a disc; 207-a drive block; 2071-a first tip; 2072-a second tip; 208-drive pin backup plate; 209-a spindle; 210-slide bar; 3-a clamping mechanism; 301-clamping a cylinder; 302 a first slider; 303-a second roller; 304-a first roller; 305-a second slider; 306—a workbench connecting plate; 4-a jacking mechanism; 401-a conical tip; 402-pushing up the cylinder connecting plate; 403-a workbench connecting plate; 404-M8 screw rods; 405-lock nut; 406-pushing up the cylinder bracket; 407-pushing up the cylinder; 5-a workbench; 6-proximity sensor.

Detailed Description

Further advantages and effects of the present invention will become readily apparent to those skilled in the art from the disclosure herein, by referring to the following description of the embodiments of the present invention with reference to the accompanying drawings and preferred examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be understood that the preferred embodiments are presented by way of illustration only and not by way of limitation.

It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

The embodiment provides a grinding clamping device, which is composed of a driving mechanism 2, a clamping mechanism 3, a jacking mechanism 4, a workbench 5 and a proximity sensor 6 which are arranged on a spindle box as shown in fig. 2. The needle valve body grinding machine is applicable to manual or mechanical arm feeding and discharging, and the driving mechanism 2 is used for replacing the traditional mode, so that the positions of the pin and the pin hole do not need to be aligned, and the clamping speed is improved; the clamping mechanism 3 is added, so that the jumping amount of the needle valve body during head grinding is greatly reduced; the action and detection of the jacking mechanism 4 and the proximity sensor 6 ensure that the needle valve body is placed in place.

As shown in fig. 3, the driving mechanism 2 and the clamping mechanism 3 in the present embodiment combine a schematic view of the needle valve body 1, wherein the driving mechanism 2 does not require a manual positioning pin hole 12, and the clamping mechanism 3 is used for clamping and fixing the needle valve body 1.

As shown in fig. 4, the driving mechanism 2 is composed of a morse taper shank 201, a positioning mandrel 202, a left-handed bearing cover 203, a bearing 204, a left-handed bearing locking buckle 205, a driving disk 206, a driving block 207, a driving pin standby plate 208, a rotating shaft 209 and a spring plunger 210, wherein the morse taper shank 201 is used for fixing the positioning mandrel 202; the driving disk 206 is fixedly connected with the spindle motor, and when the motor rotates, the driving disk 206 is driven to rotate, and the left-handed bearing cover 203 and the left-handed bearing locking buckle 205 rotate more and more tightly under the action of friction force, so that the effects of preventing loosening and falling are achieved. In this embodiment, the positioning spindle 202 passes through the drive disk 206, and a bearing 204 is provided between the positioning spindle 202 and the drive disk 206 so that the positioning spindle 202 does not rotate when the drive disk 206 rotates.

A driving block 207 capable of elastically rotating is provided on the driving plate 206, and an end portion of the driving block 207 is provided with a positioning portion, in this embodiment, the driving block 207 is connected to the driving plate 206 through a rotation shaft 209, so that the driving block 207 can rotate around the rotation shaft 209, and the rotation shaft 209 is perpendicular to the driving plate 206 and passes through a middle portion of the driving block 207. In this embodiment, a torsion spring may be provided between the driving block 207 and the rotation shaft 209 for achieving elastic rotation of the driving block 207.

As shown in fig. 5 and 6, the driving block 207 has a first tip 2071 and a second tip 2072, and when the positioning mandrel 202 positions the middle hole 21, the needle valve body 1 is pressed against the driving block 207 to rotate the driving block 207 when the middle hole 21 of the needle valve body 1 is inserted into the positioning mandrel 202 manually or by a manipulator, and the first tip 2071 moves downward and the second tip 2072 moves upward when the driving block 207 rotates in this embodiment.

When the driving disk 206 drives the driving block 207 to rotate, the first tip 2071 rotates along the tangential direction of the pitch circle of the pin hole 12 of the needle valve body 1, so that when the driving disk 206 rotates to a certain position, the first tip 2071 enters the inside of the pin hole 12 under the action of elastic force, and the positioning of the pin hole 12 is completed. The first tip 2071 constitutes a positioning portion at this time.

In another embodiment, the first tip 2071 is connected with a pin that rotates in the tangential direction of the pitch circle of the pin bore 12 of the needle valve body 1 so that the pin can enter the pin bore 12 and complete the positioning of the pin bore 12. The pin is now the locating portion.

In this embodiment, the proximity sensor 6 is installed on the machine tool, the proximity sensor 6 is located above the driving disk 206, the sliding rod 210 is disposed on the driving disk 206, the sliding rod 210 is disposed in the stepped hole of the driving disk 206, a spring is disposed between the bottom of the sliding rod 210 and the step of the stepped hole, the sliding rod 210 and the spring form a spring plunger, the bottom of the sliding rod 210 is overlapped with the second tip 2072, and may be hinged, when the first tip 2071 moves downward, the second tip 2072 moves upward to enable the sliding rod 210 to extend a certain distance, the sliding rod 210 can enter the sensing range of the proximity sensor 6, and when the first tip 2071 is inserted into the pin hole to cause the sliding rod 210 to retract, the sliding rod 210 does not enter the sensing range of the sensor 6. Since the driving disk 206 drives the sliding rod 210 to rotate, when the proximity sensor 6 loses the pulse, the first tip 2071 enters the pin hole 12, and when the pulse is not lost, the first tip 2071 enters the pin hole 12.

In this embodiment, the first tip 2071 is detachably connected to the driving block 207 for changing the first tip 2071 with different sizes for different specifications of the needle valve body 1.

As shown in fig. 7, the clamping mechanism 3 includes a clamping cylinder 301, the clamping cylinder 301 is fixed on the workbench 5 through a workbench connecting plate 306, a first slider 302 and a second slider 305 are arranged on the clamping cylinder 301, the clamping cylinder 301 can enable the first slider 302 and the second slider 305 to move in opposite directions or back to each other, a first roller 304 and a second roller 303 are respectively arranged on the first slider 302 and the second slider 305, the first roller 304 and the second roller 303 can clamp the needle valve body 1 under the driving of the clamping cylinder 301, and the clamping position is the large outer circle of the needle valve body 1.

In this embodiment, the heights of the first slider 302 and the second slider 305 are the same, and in the axial direction of the positioning mandrel 202, the radial cross sections of the first roller 304 and the second roller 303 are arranged in an inclined manner, and the inclination angles of the two are the same, and the inclination directions are opposite, and the inclination angle in this embodiment is 5 °.

As shown in fig. 8, after the first roller 304 and the second roller 305 clamp the positioned needle valve body 1, the needle valve body 1 drives the first roller 304 and the second roller 305 in the direction of C as shown in the drawing along with the rotation of the needle valve body 1 (after the first tip 2071 extends into the pin hole), and the rollers press the needle valve body while pressing the needle valve body vertically downward, so that the needle valve body 1 contacts with the upper side of the positioning mandrel 202 and stably rotates, and the roller axis is higher than the needle valve body axis. Because the roller 304 and the second roller 303 are obliquely arranged, and the inclination angles of the roller 304 and the second roller 303 are the same, and the inclination directions are opposite, the fact that the force analysis and the force application are mutually known can prove that the needle valve body 1 rotates when being pressed by the first roller 304 and the second roller 305, axial component force can be generated, the bottom of the middle hole 21 is always attached to the positioning surface of the positioning mandrel 202, and the stability and the consistency of the needle valve body 1 in grinding head type are ensured due to the characteristics of the device.

As shown in fig. 9, the tightening mechanism 4 comprises a conical tip 401, a tightening cylinder connecting plate 402, a workbench connecting plate 403, an M8 screw 404, a lock nut 405, a tightening cylinder bracket 406 and a tightening cylinder 407, wherein the tightening cylinder 407 is connected to the tightening cylinder connecting plate 402 by nuts, the latter is connected to the tightening cylinder bracket 406 by four screws, and is subsequently connected to the workbench 5 through the workbench connecting plate 403, and the tightening cylinder 407 extends after the middle hole 11 of the needle valve body 1 is placed on the positioning mandrel 202, the head 13 of the needle valve body 1 is pressed on the positioning mandrel 202, and the tightening cylinder 407 retreats after the proximity sensor 6 loses the pulse.

The implementation of this example is: as shown in fig. 10-15, when the needle valve body 1 is mounted on the positioning mandrel 202 by a manual or mechanical arm, the machine tool PMC controls the jacking cylinder 407 to push the conical tip 401 against the needle valve body, the motor is started, the screw rod connected to the headstock rotates the driving disc 206 until the first tip 2071 of the driving block 207 is inserted into the pin hole 12, the motor keeps rotating, the proximity sensor 6 judges that the driving pin is inserted into the pin hole of the needle valve body through the state of the slide rod 210, the machine tool PMC controls the two rollers with opposite inclination angles of the clamping mechanism 3 to clamp the needle valve body 1, and after clamping, the jacking cylinder 407 is controlled to retract and is ready before processing.

The above embodiments are merely preferred embodiments for fully explaining the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutions and modifications will occur to those skilled in the art based on the present invention, and are intended to be within the scope of the present invention.

Claims

1. The utility model provides a grinding clamping device which characterized in that: including location mandrel (202) and driving disk (206), driving disk (206) are rotatable, location mandrel (202) pass driving disk (206), be equipped with but elastically rotating's driving piece (207) on driving disk (206), the tip of driving piece (207) has location portion, when the centre bore (11) of needle valve body (1) to be processed are located to location mandrel (202), driving piece (207) are positively rotated under the extrusion of needle valve body (1) to be processed, works as driving disk (206) rotate to a certain position, location portion gets into under the effect of elasticity inside pinhole (12) of needle valve body (1) to be processed, or the drive with other parts that location portion is connected get into inside pinhole (12) of needle valve body (1) to be processed for driving piece (207) reverse rotation.

2. The apparatus according to claim 1, wherein: still include clamping mechanism (3), clamping mechanism (3) are including pressing from both sides tight cylinder (301), be equipped with first slider (302) and second slider (305) on pressing from both sides tight cylinder (301), press from both sides tight cylinder (301) can make first slider (302) and second slider (305) move in opposite directions or dorsad, be equipped with first gyro wheel (304) and second gyro wheel (303) on first slider (302) and second slider (305) respectively, make both can press from both sides tightly or loosen under the drive of pressing from both sides tight cylinder (301) needle valve body (1) of waiting to process.

3. The apparatus according to claim 2, wherein: the first roller (304) and the second roller (303) are the same in height, the radial sections of the first roller (304) and the second roller (303) are obliquely arranged relative to the axial direction of the positioning mandrel (202), the inclination angles of the first roller and the second roller are the same, and the inclination directions are opposite.

4. The apparatus according to claim 1, wherein: the device further comprises a proximity sensor (6) and a sliding rod (210), wherein the sliding rod (210) is arranged on the driving disc (206), the sliding rod (210) is overlapped with one end, far away from the positioning part, of the driving block (207), the proximity sensor (6) is fixedly arranged, when the driving block (207) rotates forwards, the sliding rod (210) stretches out and triggers the proximity sensor (6), and when the driving block (207) rotates backwards, the sliding rod (210) retracts and does not trigger the proximity sensor (6).

5. The apparatus according to claim 4, wherein: the device is provided with a jacking mechanism (4), the jacking mechanism (4) comprises a jacking cylinder (407), a conical tip (401) is connected to a telescopic shaft of the jacking cylinder (407), and the conical tip (401) can extend out and be pressed on the head of the needle valve body (1) to be processed.

6. The apparatus according to claim 5, wherein: when the proximity sensor (6) loses the pulse, the jacking cylinder (407) drives the conical tip (401) to retract.

7. The apparatus according to claim 4, wherein: the positioning part or other parts connected with the positioning part can move along the tangential direction of the reference circle of the pin hole (12) of the needle valve body (1) to be processed.

8. The apparatus according to claim 4, wherein: the two ends of the driving block (207) are respectively provided with a first tip (2071) and a second tip (2072), the first tip (2071) forms the positioning part, and the second tip (2072) is overlapped with the sliding rod (210).

9. The apparatus according to claim 4, wherein: the driving disc (206) is provided with a stepped hole, the sliding rod (210) is placed inside the stepped hole, and an elastic piece is arranged between the bottom of the sliding rod (210) and the step of the stepped hole.

10. The apparatus according to claim 8, wherein: the first tip (2071) is detachably connected with the driving block (207).