CN220331084U - Main shaft clamp - Google Patents

Abstract

The utility model relates to a main shaft clamp, which comprises a pushing mechanism and a limiting mechanism which are oppositely arranged, wherein a base is arranged between the pushing mechanism and the limiting mechanism, a plurality of positioning plates are arranged on the base, the positioning plates are arranged along the axial direction of a main shaft, a plurality of clamping mechanisms are also arranged on the base, the clamping mechanisms are distributed along the axial direction of the main shaft, the clamping mechanisms are connected with a clamping driving mechanism to clamp the main shaft, the base is also provided with a pressing mechanism, the pressing mechanism comprises a pressing driving piece arranged on the base, and the pressing driving piece is connected with a pressing rod to drive the pressing rod to apply pressing load to the main shaft.

Description

Main shaft clamp

Technical Field

The utility model relates to the technical field of machining equipment, in particular to a main shaft clamp.

Background

The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The jig is a device for fixing a machining object in a machine manufacturing process so as to occupy a correct position for performing a construction or a detection. In a broad sense, any device used to quickly, conveniently and safely mount a workpiece at any stage in the process may be referred to as a fixture. Therefore, the good fixture design can improve the labor productivity of the product, ensure and improve the processing precision, reduce the production cost, and enlarge the application range of the machine tool, thereby improving the efficiency and reducing the cost of the product on the premise of ensuring the precision.

When machining a large-diameter long spindle with the diameter larger than 70mm and the length larger than 500mm, the required clamping force is larger due to the larger diameter of the spindle, meanwhile, the clamping balance of the long spindle is difficult to ensure, the bench clamp is adopted for fixing during the traditional large-diameter long spindle machining, the manual clamping is performed, the clamping time is long, the working efficiency is low, the labor intensity of operators is high, the spindle is unbalanced front and back, the tilting is easy, the clamping force is insufficient, the machining deformation is easy to generate, the product precision is difficult to ensure,

disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides the main shaft clamp, which improves the working efficiency and reduces the labor intensity.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the embodiment of the utility model provides a main shaft clamp, which comprises a pushing mechanism and a limiting mechanism which are oppositely arranged, wherein a base is arranged between the pushing mechanism and the limiting mechanism, the base is provided with a plurality of positioning plates, the positioning plates are arranged along the axial direction of a main shaft, the base is also provided with a plurality of clamping mechanisms which are distributed along the axial direction of the main shaft, the clamping mechanisms are connected with a clamping driving mechanism to clamp the main shaft, the base is also provided with a pressing mechanism, the pressing mechanism comprises a pressing driving piece arranged on the base, and the pressing driving piece is connected with a pressing rod to drive the pressing rod to apply pressing load to the main shaft.

Optionally, the middle part position of locating plate is provided with V type groove, and the locating plate supports the main shaft through V type groove.

Optionally, clamping mechanisms are arranged on two sides of the positioning plate.

Optionally, fixture includes the first clamping jaw and the second clamping jaw of V type, and first clamping jaw and second clamping jaw rotate in the corner position to be connected, and tip is articulated under the first clamping jaw with the one end of first connecting rod, and the other end of first connecting rod is articulated with the connecting block, and the lower tip of second clamping jaw is articulated with the one end of second connecting rod, and the other end of second connecting rod is articulated with the connecting block, and the connecting block is connected with clamping driving mechanism.

Optionally, the centre gripping actuating mechanism includes centre gripping actuating cylinder, centre gripping actuating cylinder's axis is used for perpendicular to main shaft axis level setting, centre gripping actuating cylinder's output shaft is connected with the pushing block, the pushing block contacts with at least one pushing roller, the pushing block passes through inclined plane and pushing roller contact so that the horizontal motion of pushing block changes the vertical motion of pushing roller, the pushing roller rotates to be connected on the lifter, the lifter is connected with a plurality of connecting blocks, the lifter still passes has the guide post, the guide post top is connected with the fixed plate of fixing at the base, be equipped with the elastic component between lifter and the fixed plate.

Optionally, the lifting block is further rotatably connected with at least one guide roller, and the guide roller is contacted with the vertical side surface of the guide block positioned at one side of the guide roller.

Optionally, the both ends of locating plate are equipped with the sliding block, and the sliding block embedding is in the spout that the base set up, and the sliding block passes through spout and base sliding connection in order to adjust the position of locating plate, correspondingly, the connecting block passes through sliding block and lifter block sliding connection.

Optionally, the depression bar includes the first pole portion and the second pole portion of alternately setting, and the cross position of first pole portion and second pole portion rotates with the support piece that fixes at the base to be connected, and first pole portion adopts the arc pole, and its one end is connected with the second pole portion, and the other end is articulated with the one end of pushing down the driving piece, and the other end of pushing down the driving piece is articulated with support piece, and the tip of second pole portion is equipped with the pressure strip that is used for following the main shaft axis direction setting for with main shaft contact and exert the load of pushing down to the main shaft.

Optionally, the surface of the pressing plate, which is used for contacting with the main shaft, is an arc-shaped surface matched with the main shaft.

Optionally, the pushing mechanism comprises a first support, a pushing cylinder is arranged at the top end of the first support, a cylinder body of the pushing cylinder is fixed with the first support, a pushing head is fixed on a piston rod of the pushing cylinder, and the pushing head is used for being in contact with the end part of the main shaft.

Optionally, the limiting mechanism comprises a second support, and a limiting piece for contacting with the end part of the main shaft is arranged at the top end of the second support.

The beneficial effects of the utility model are as follows:

1. according to the spindle clamp disclosed by the utility model, the pushing mechanism and the limiting mechanism can be used for clamping two ends of the spindle, the spindle is placed on the plurality of positioning plates, and meanwhile, the pressing mechanism is used for applying a pressing load to the spindle, so that the vertical movement of the spindle is limited, the spindle can be clamped through the plurality of clamping mechanisms, and the spindle is limited to move in the horizontal direction perpendicular to the axis of the spindle, so that the spindle is fixed, the pressing rod of the pressing mechanism is driven by the pressing driving piece, the clamping mechanism is driven by the clamping driving mechanism, so that a spindle workpiece can be clamped rapidly, the clamping force is high, manual clamping is not required, the working efficiency is improved, the labor intensity of workers is reduced, and the spindle is uniformly stressed along the axis direction in a plurality of clamping mechanisms and positioning plates distributed along the axis direction, so that the tilting phenomenon caused by unbalance before and after the spindle is stressed is avoided, the machining deformation is avoided, the product precision is ensured, and the product quality is improved.

2. According to the main shaft clamp, the connecting blocks of all the clamping mechanisms are connected with the lifting blocks, so that all the clamping mechanisms can be synchronously driven to work by using one clamping driving cylinder, the number of the clamping driving cylinders is reduced, the cost of the main shaft clamp is reduced, and meanwhile, all the clamping mechanisms can be synchronously operated, and the stress uniformity of the main shaft is ensured.

3. According to the main shaft clamp disclosed by the utility model, the positioning plate is in sliding connection with the base, meanwhile, the connecting block is in sliding connection with the lifting block, the positions of the positioning plate and the clamping mechanism can be adjusted, the fixing requirements of main shafts with different specifications are met, and the applicability of the whole main shaft clamp is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not limit the application.

FIG. 1 is a schematic view showing the overall structure of embodiment 1 of the present utility model;

FIG. 2 is a schematic view of the base structure of embodiment 1 of the present utility model;

FIG. 3 is a schematic view of a clamping mechanism according to embodiment 1 of the present utility model;

FIG. 4 is a schematic view of a clamping driving mechanism according to embodiment 1 of the present utility model;

the hydraulic pressure type hydraulic pressure control device comprises a main shaft 1, a first support 3, a pushing cylinder 4, a second support 5, a limit bolt 6, a bottom plate 7, a first side plate 8, a second side plate 9, a locating plate 10, a T-shaped chute 11, a first clamping jaw 12, a second clamping jaw 13, a pin shaft 14, a first connecting rod 15, a sliding block 16, a connecting block 17, a second connecting rod 18, a clamping driving cylinder 19, a push plate 20, a pushing block 21, a pushing roller 22, a lifting block 23, a sliding block 24, a guide post 25, a fixing plate 26, a spring 27, a guide roller 28, a guide block 29, a pressing cylinder 30, a supporting piece 31, a first rod portion 32, a second rod portion 33 and a pressing plate.

Detailed Description

Example 1

The embodiment provides a main shaft clamp which is used for fixing a main shaft with a larger diameter and a longer length.

As shown in fig. 1, the spindle clamp comprises a pushing mechanism and a limiting mechanism which are oppositely arranged, wherein the pushing mechanism is used for pushing one end of the spindle 1, and the limiting mechanism is used for contacting with the other end of the spindle 1, so that the spindle is clamped along the axis direction of the spindle, and the movement of the spindle along the axis direction is limited.

The pushing mechanism comprises a first support 2, a pushing cylinder 3 is arranged at the top end of the first support 2, the pushing cylinder 3 is arranged coaxially with the main shaft 1, a cylinder body of the pushing cylinder 3 is fixed at the top end of the first support 2 through bolts, a piston rod of the pushing cylinder 3 is connected with a pushing head, and the pushing cylinder can apply pushing load to the main shaft 1 through the pushing head.

The limiting mechanism comprises a second support 4, the top end of the second support 4 is connected with a limiting piece, the limiting piece is a limiting bolt 5, the limiting bolt 5 is in threaded connection with the top end of the second support 4, and the limiting bolt 5 and the pushing cylinder 3 are coaxially arranged.

The base is arranged between the pushing mechanism and the limiting mechanism, as shown in fig. 2, the base comprises a bottom plate 6, two side plates are fixed on the bottom plate 6, namely a first side plate 7 and a second side plate 8, and the two side plates are arranged parallel to the axis direction of the main shaft 1.

A plurality of positioning plates 9 are arranged between the tops of the two side plates, and the positioning plates 9 are used for contacting with the bottom of the main shaft 1 to support the main shaft.

In this embodiment, four positioning plates 9 are provided, and a V-shaped groove matched with the spindle is provided in the middle of the top surface of the positioning plate 9, and the positioning plate supports the spindle 1 through the V-shaped groove.

The two ends of the locating plate 9 are fixed with sliding blocks 15 through bolts, in this embodiment, the sliding blocks 15 are T-shaped sliding blocks, the sliding blocks 15 on two sides of the locating plate 9 are respectively embedded into T-shaped sliding grooves 10 formed in the tops of the two side plates, the sliding blocks are in sliding connection with the T-shaped sliding grooves 10, and therefore the position of the locating plate on a base is adjusted, and preferably, locking bolts are arranged between the sliding blocks and the T-shaped sliding grooves to lock and fix the sliding blocks.

Clamping mechanisms are arranged on two sides of the positioning plate and used for clamping the main shaft 1 and limiting the movement of the main shaft along the horizontal direction perpendicular to the axis of the main shaft.

All the clamping mechanisms have the same structure, and one of the clamping mechanisms is taken as an example for explanation:

as shown in fig. 3, the clamping mechanism includes a first clamping jaw 11 and a second clamping jaw 12, where the first clamping jaw 11 and the second clamping jaw 12 each adopt a V-shaped structure, and include two first clamping jaw portions and two second clamping jaw portions, the first clamping jaw portions are located above the second clamping jaw portions, and the first clamping jaw and the second clamping jaw are rotationally connected at the crossing positions of the two clamping jaw portions through a pin shaft 13.

The bottom end part of the second clamping claw part of the first clamping jaw 11 is hinged with one end of the first connecting rod 14 through a pin shaft, the other end of the first connecting rod 14 is hinged with the connecting block 16, the bottom end part of the second clamping jaw 12 is hinged with one end of the second connecting rod 17 through a pin shaft, and the other end of the second connecting rod 17 is hinged with the connecting block 16.

The connecting block 16 performs vertical lifting movement, and can drive the first clamping jaw 11 and the second clamping jaw 12 to generate relative rotation through the first connecting rod 14 and the second connecting rod 17, so that the first clamping jaw part of the first clamping jaw 11 and the first clamping jaw part of the second clamping jaw 12 are driven to perform opening and closing movement, and the clamping and loosening states of the main shaft 1 are switched.

The tip ends of the first clamping claw portions of the first clamping claw 11 and the second clamping claw 12 are each bent inward to encase the spindle 1.

The connecting blocks of all the clamping mechanisms are connected with the clamping driving mechanisms together, and the clamping driving mechanisms can drive all the connecting blocks to synchronously do lifting motion so as to realize synchronous opening and closing of all the clamping mechanisms.

As shown in fig. 4, the clamping driving mechanism includes a clamping driving cylinder 18, an axis of the clamping driving cylinder 18 is perpendicular to an axis of the spindle 1, a cylinder body of the clamping driving cylinder 18 is fixed on one side plate of the base, a side plate for fixing the clamping driving cylinder is defined as a first side plate 7, and the other side plate is defined as a second side plate 8.

The cylinder body of the clamping driving cylinder 18 is fixed with the first side plate 7, a piston rod of the clamping driving cylinder passes through the first side plate 7 and then stretches into a space between the first side plate 7 and the second side plate 8, a push plate 19 is connected with the piston rod of the clamping driving cylinder 18, and a pushing block 20 is connected with one side of the push plate 19.

The clamping driving cylinder 18 can drive the pushing block 20 to horizontally move in the direction perpendicular to the axis of the spindle 1.

The pushing blocks 20 are in contact with the pushing rollers 21, at least one pushing roller 21 is arranged, preferably two pushing rollers 21 are arranged, two corresponding pushing blocks 20 are also arranged, and the two pushing blocks 20 are fixed on the same push plate 19.

Two ends of the pushing roller 21 are respectively connected with two ear plates in a rotating way, and the two ear plates are fixed on the bottom surface of the lifting block 22.

The pushing block 20 contacts with the pushing roller through the inclined surface, the distance between the top end of the inclined surface and the first side plate 7 is smaller than the distance between the bottom end of the inclined surface and the first side plate 7, and the pushing block 20 contacts with the pushing roller 21 through the inclined surface, so that the horizontal movement of the pushing block 20 can be converted into the vertical lifting movement of the pushing roller 21, and then the vertical lifting movement of the lifting block 22 is converted.

The bottom end of the connecting block 16 is fixed with a sliding block 23, the sliding block 23 adopts a T-shaped sliding block, the sliding block 23 at the bottom end of the connecting block 16 is embedded into a T-shaped sliding groove formed in the top surface of the lifting block 22, and the sliding block 23 is in sliding connection with the T-shaped sliding groove, so that the sliding connection between the connecting block 16 and the lifting block 22 is realized, the lifting block 22 can drive the connecting block to do lifting motion, and then the clamping mechanism is driven to work, and preferably, a locking bolt is arranged between the sliding block 23 and the T-shaped sliding groove to lock and fix the sliding block 23.

Through the sliding block 23, the position of the clamping mechanism can be adjusted, and the clamping requirements of spindles with different specifications are met.

The two ends of the lifting block 22 are respectively provided with a guide post 24 in a penetrating way, the top ends of the posts 24 are fixedly connected with a fixed plate 25, the two ends of the fixed plate 25 are respectively connected to the top surfaces of the first side plate 7 and the second side plate 8, the guide posts 24 guide the lifting movement of the lifting block 22, an elastic piece is arranged between the lifting block 22 and the fixed plate 25, the elastic piece is a spring 26, the spring 26 is sleeved on the periphery of the guide posts 24, one end of the spring is connected with the bottom surface of the fixed plate 25, and the other end of the spring is connected with the top surface of the lifting block 22.

After the clamping driving cylinder 18 drives the pushing block 20 to retract, the lifting block 22 descends under the elastic force of the spring 26, so that the clamping mechanism is driven to open.

The connecting blocks 16 of all clamping mechanisms are connected with the lifting blocks 22, so that all clamping mechanisms can be synchronously driven to work by using one clamping driving cylinder 18, the set number of the clamping driving cylinders is saved, the cost of the main shaft clamp is reduced, and meanwhile, all clamping mechanisms can be synchronously operated, and the main shaft stress is ensured to be uniform.

In order to further ensure the lifting stability of the lifting block, two guide rollers 27 are arranged on the end face, far away from the first side plate, of the lifting block, two ends of each guide roller 27 are rotationally connected with an ear plate fixed on the side face of the lifting block 22, each guide roller 27 is in contact with the vertical side face of each guide block 28, each guide block 28 is fixedly connected with the bottom plate 6 and the second side plate 8, and due to the two guide rollers 27, two guide blocks 28 are arranged, and each guide block 28 corresponds to each guide roller 27.

The pushing mechanism comprises a pushing driving piece, the pushing driving piece is a pushing cylinder 29, the cylinder body of the pushing cylinder 29 is hinged with a supporting piece 30 fixed on the top surface of the first side plate 7, and the piston rod of the pushing cylinder 29 is hinged with a pushing rod.

The support 30 is an L-shaped plate, the horizontal part of which is fixed on the top surface of the first side plate 7, and the cylinder body of the lower pressure cylinder 29 is hinged with the bottom end of the vertical part.

The pressing rod includes a first rod portion 31 and a second rod portion 32 which are disposed to cross, and the first rod portion 31 and the second rod portion 32 are hinged to the top end of the vertical portion of the support 30 at the crossing position through a pin shaft.

The first rod portion 31 adopts an arc-shaped rod, and is bent towards a direction away from the lower pressure cylinder, one end of the first rod portion 31 is arranged in a crossing manner with the second rod portion 32, and the other end of the first rod portion is hinged with a piston rod of the lower pressure cylinder 29.

One end of the second rod portion 32 is in cross connection with the first rod portion 31, the other end of the second rod portion is provided with a pressing plate 33, the pressing plate 33 is a long plate which is arranged along the axis direction of the main shaft in the length direction, the bottom surface of the pressing plate, which is used for being in contact with the main shaft 1, is an arc-shaped surface matched with the main shaft, so that the contact area is increased, and the pressing effect on the main shaft is guaranteed.

The working method of the embodiment is as follows:

the main shaft is placed on the V-shaped grooves of the positioning plates 9, the positioning plates 9 support the main shaft through the V-shaped grooves, the pushing cylinder 3 works and is matched with the limiting piece to clamp the two ends of the main shaft 1 along the axial direction, and the movement of the main shaft 1 along the axial direction is limited.

The clamping driving cylinder 18 works to drive the pushing block 20 to move, the horizontal movement of the pushing block 20 is converted into the vertical movement of the lifting block 22, and the lifting block 22 ascends to drive the first clamping jaw 11 and the second clamping jaw 12 to clamp the main shaft 1, so that the movement of the main shaft 1 along the horizontal direction perpendicular to the axis of the main shaft is limited.

The piston rod of the pressing cylinder 29 stretches to drive the pressing rod to rotate, and the pressing plate 33 presses the main shaft 1 to be matched with the positioning plate 9 to limit the movement of the main shaft 1 in the vertical direction.

When the key groove is required to be formed on the main shaft, the piston rod of the pressing cylinder 29 is contracted, and the pressing plate 33 is separated from the main shaft, so that the processing area of the main shaft is exposed, and the key groove on the main shaft can be formed at this time.

The main shaft clamp of the embodiment is adopted to clamp the main shaft workpiece rapidly under the action of each cylinder, manual clamping is not needed, the clamping force is high, the working efficiency is improved, the labor intensity of workers is reduced, and the main shaft clamp is provided with a plurality of clamping mechanisms and positioning plates distributed along the axis direction of the main shaft, so that the main shaft is uniformly stressed along the axis direction at multiple points, the tilting phenomenon caused by unbalance before and after the stress of the main shaft is avoided, the processing deformation is avoided, the product precision is ensured, and the product quality is improved.

While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.

Claims (10)

1. The utility model provides a main shaft anchor clamps, a serial communication port, including pushing away mechanism and the stop gear of relative setting, be equipped with the base between pushing away mechanism and the stop gear, the base is equipped with a plurality of locating plates, a plurality of locating plates are used for setting up along the axis direction of main shaft, the base still is provided with a plurality of fixture, a plurality of fixture are used for distributing along the main shaft axis direction, fixture is connected with the centre gripping actuating mechanism in order to clip the main shaft, the base still is equipped with pushing down mechanism, pushing down the actuating member including installing at the base pushes down, pushing down the actuating member and pushing down the pole and be connected in order to drive the depression bar and applys the load of pushing down to the main shaft.

2. A spindle attachment as claimed in claim 1, wherein the locating plate is provided with a V-shaped groove in a central portion thereof, the locating plate supporting the spindle through the V-shaped groove.

3. A spindle attachment as claimed in claim 1, wherein the positioning plate is provided with clamping means on both sides.

4. A spindle attachment as claimed in claim 1, wherein the clamping means comprises a V-shaped first jaw and a second jaw, the first jaw and the second jaw being rotatably connected at a corner position, the lower end of the first jaw being hinged to one end of a first link, the other end of the first link being hinged to a connecting block, the lower end of the second jaw being hinged to one end of a second link, the other end of the second link being hinged to a connecting block, the connecting block being connected to the clamping drive means.

5. The spindle clamp as claimed in claim 4, wherein the clamping driving mechanism includes a clamping driving cylinder, an axis of the clamping driving cylinder is horizontally arranged perpendicular to the axis of the spindle, an output shaft of the clamping driving cylinder is connected with the pushing block, the pushing block is contacted with at least one pushing roller, the pushing block is contacted with the pushing roller through an inclined plane to enable horizontal movement of the pushing block to be converted into vertical movement of the pushing roller, the pushing roller is rotatably connected to a lifting block, the lifting block is connected with a plurality of connecting blocks, the lifting block further passes through a guide post, a top end of the guide post is connected with a fixing plate fixed on the base, and an elastic piece is arranged between the lifting block and the fixing plate.

6. A spindle attachment as claimed in claim 5, wherein the lifting block is further rotatably coupled with at least one guide roller in contact with a vertical side of the guide block on one side thereof.

7. The spindle attachment of claim 5, wherein the positioning plate has slide blocks at both ends thereof, the slide blocks being inserted into slide grooves formed in the base, the slide blocks being slidably coupled to the base through the slide grooves to adjust the position of the positioning plate, and the connecting blocks being slidably coupled to the lifting blocks through the slide blocks.

8. The spindle attachment of claim 1, wherein the pressing bar includes a first bar portion and a second bar portion which are disposed to intersect, the intersecting position of the first bar portion and the second bar portion being rotatably connected to a support member fixed to the base, the first bar portion being an arc-shaped bar, one end of which is connected to the second bar portion, the other end of which is hinged to one end of the pressing driving member, the other end of which is hinged to the support member, and an end of the second bar portion being provided with a pressing plate for being disposed along the axial direction of the spindle for contacting the spindle and applying a pressing load to the spindle.

9. The spindle clamp according to claim 1, wherein the pushing mechanism comprises a first support, a pushing cylinder is arranged at the top end of the first support, a cylinder body of the pushing cylinder is fixed with the first support, a pushing head is fixed on a piston rod of the pushing cylinder, and the pushing head is used for being in contact with the end part of the spindle.

10. A spindle attachment as claimed in claim 1, wherein the stop means comprises a second abutment, the top end of which is provided with a stop for contact with the end of the spindle.