CN219925286U - Workpiece positioning device - Google Patents

Abstract

The utility model discloses a workpiece positioning device, which comprises a base, a positioning component and a locking component, wherein the positioning component comprises a sliding block and a positioning piece arranged on the sliding block; the locating piece and the sliding block of the locating component can be locked at the locating position through the locking component, the locating component and the sliding block of the locating component can be released through the locking component after locating, the sliding block is pushed to drive the locating piece to be far away from the workpiece, namely, the locating piece is moved to the avoiding position, and then the workpiece can be machined. The utility model simplifies the operation of workpiece positioning, can rapidly position the workpiece, is convenient for avoiding the workpiece after the positioning is finished, and effectively improves the processing efficiency and the safety.

Description

Workpiece positioning device

Technical Field

The utility model belongs to the technical field of machining devices, and particularly relates to a workpiece positioning device.

Background

Before machining, the workpiece needs to be positioned, and then a certain type of machining apparatus is used for machining the workpiece. For example, when performing processing operations such as punching, dispensing, welding, etc. on a plate, it is necessary to accurately position the plate on the loading mechanism. The conventional mode of operation is manual marking of the predetermined location for placement of the workpiece or the provision of some fixed positioning mechanism to define the predetermined location for placement of the workpiece. The traditional mode is obvious in operation inconvenience, high in misoperation probability and low in production efficiency.

In addition, the numerical control machine tool has the function of intelligently positioning the workpiece, but has higher realization cost and complicated operation, and is specifically described as follows:

before a workpiece is machined by the numerical control machine tool, a machining origin set by a control program is required to be confirmed, so that the tool can accurately cut according to a route set by the control program, and the machining origin is the coordinate origin set by the workpiece on the machine tool.

In general, when the working coordinates of a workpiece are confirmed, whether an empty cutter position exists on a machine tool is checked, and a movable cutter of the machine tool is removed to leave the empty cutter position under the condition that the empty cutter position does not exist. The purpose of the clearance is to fix the middle rod (edge finder) on the clearance of the machine tool through the cutter handle and the lock nozzle for operation, the rotation speed of the middle rod needs to be kept at 500-800 revolutions per minute when the middle rod is in a working state, then the middle rod is slowly close to the reference edge of a workpiece, when the middle rod is close to the workpiece, a machine tool operator rotates a hand wheel button of the machine tool to operate every time close to 0.01mm, the middle rod is in a state of freely swinging to gradually and coaxially rotating, and when the middle rod touches the workpiece, the upper end and the lower end of the middle rod suddenly make eccentric rotation, so that the origin of the workpiece is determined.

However, the method using the center rod has the following problems: when the tool is used each time, a tool bit of the machine tool is required to be occupied, the tool bit is required to be vacated for clamping and fixing the middle rod, and the tool bit is required to be detached from the machine tool after the tool bit is used, so that the operation is complicated, the processing time is occupied, and the processing efficiency is low; in addition, when the centering rod is positioned, the centering rod is mainly controlled by an operator to be edge-backed, and in the process, if the experience of the operator is insufficient, the positioning error of a workpiece is easily caused to be overlarge; furthermore, if the rotating speed of the middle rod is input too much due to improper operation, the middle rod is damaged and is easy to hurt people.

Disclosure of Invention

The utility model aims to provide a workpiece positioning device which is simple and convenient to operate and high in machining efficiency. The utility model is realized by the following technical scheme:

a workpiece positioning device, comprising:

the base is used for being fixedly arranged at a preset position;

the positioning assembly comprises a sliding block and a positioning piece arranged on the sliding block, and the sliding block is arranged on the base and moves between a positioning position and an avoiding position relative to the base; when the positioning component is at the positioning position, the positioning piece is positioned in an abutting manner with the positioning surface of the workpiece;

and the locking component is matched with the base and the positioning component respectively and locks or releases the base and the positioning component from each other at the positioning position.

Preferably, the base is provided with a first guiding mechanism distributed along the left-right direction, the sliding block is provided with a first guiding matching mechanism distributed along the left-right direction, and the first guiding mechanism and the first guiding matching mechanism are matched with each other and guide the sliding block relative to the base.

Preferably, when the positioning assembly is at the positioning position, the positioning piece is positioned in an abutting manner with a positioning surface of the workpiece moving along the front-back direction; when the positioning assembly is at the avoiding position, the projections of the positioning piece and the positioning surface in the front-back direction are staggered.

Preferably, the positioning piece is arranged above the sliding block in an extending manner along the up-down direction.

Preferably, the positioning piece comprises a positioning column and a positioning ball arranged at the upper end of the positioning column, and the diameter of the positioning ball is larger than that of the positioning column.

Preferably, the locking assembly comprises a locking bolt; the base is provided with a lock tongue accommodating hole, and the slide block is provided with a lock tongue limiting hole; when the lock tongue is simultaneously inserted into the lock tongue accommodating hole and the lock tongue limiting hole, the locking component locks the base and the positioning component at the positioning position; when the lock tongue is separated from at least one of the lock tongue accommodating hole and the lock tongue limiting hole, the locking component releases the base and the positioning group from each other.

Preferably, the locking assembly further comprises a lock tongue driving mechanism and a lock tongue reset mechanism; when the positioning assembly is at the positioning position, the lock tongue accommodating hole is in alignment communication with the lock tongue limiting hole, the upper end of the lock tongue stretches out of the upper end opening of the lock tongue accommodating hole and is clamped into the lock tongue limiting hole under the drive of the lock tongue resetting mechanism, or the upper end of the lock tongue is retracted into the upper end opening of the lock tongue accommodating hole under the drive of the lock tongue driving mechanism; when the positioning assembly moves towards the avoiding position relative to the base, the lock tongue accommodating hole and the lock tongue limiting hole are staggered.

Preferably, the locking assembly further comprises a locking seat, the locking seat is fixedly arranged on the sliding block, the lock tongue driving mechanism comprises a first driving piece and a second driving piece, and the first driving piece is movably arranged in an inner cavity of the locking seat left and right; the lower side wall of the locking seat is provided with a communication groove, the inner cavity of the locking seat is communicated with the lock tongue limiting hole through the communication groove, the second driving piece is movably arranged in the inner cavity of the locking seat and the lock tongue limiting hole along the up-down direction, the upper end of the second driving piece is provided with a first driving inclined plane, the left end of the first driving piece is provided with a second driving inclined plane, and the first driving inclined plane is in fit with the second driving inclined plane; the lower end of the second driving piece is used for being in propping fit with the lock tongue.

Preferably, a first reset piece is further arranged between the first guide mechanism and the first guide matching mechanism, and the first reset piece provides a force towards the avoidance position for the positioning assembly.

Preferably, the workpiece positioning device further comprises a clamping and fixing assembly, a suction and fixing assembly or a bearing table assembly for bearing the workpiece to be processed; the base is fixedly arranged at a preset position of the clamping and fixing assembly, the suction and fixing assembly or the bearing table assembly.

The workpiece positioning device provided by the utility model has the beneficial effects that the workpiece positioning device mainly comprises the following aspects: the locating piece and the sliding block of the locating component can be locked at the locating position through the locking component, the locating component and the sliding block of the locating component can be released through the locking component after locating, the sliding block is pushed to drive the locating piece to be far away from the workpiece, namely, the locating piece is moved to the avoiding position, and then the workpiece can be machined. The utility model simplifies the operation of workpiece positioning, can rapidly position the workpiece, is convenient for avoiding the workpiece after the positioning is finished, and effectively improves the processing efficiency and the safety.

Drawings

Fig. 1 is an exploded view of a workpiece positioning device according to an embodiment of the utility model.

Fig. 2 is an assembly diagram of a positioning assembly and a locking assembly in a workpiece positioning device according to an embodiment of the utility model.

Fig. 3 is a perspective view of a base in a workpiece positioning device according to an embodiment of the utility model.

Fig. 4 is a longitudinal sectional view of a workpiece positioning device at a lock tongue position according to an embodiment of the utility model.

Fig. 5 is a longitudinal sectional view of the workpiece positioning device provided in the second embodiment of the utility model at the position of the lock tongue when the base and the positioning assembly are locked with each other.

Fig. 6 is a longitudinal sectional view of the workpiece positioning device provided in the second embodiment of the utility model at the position of the lock tongue when the base and the positioning assembly are released from each other.

Fig. 7 is a perspective view of a workpiece positioning device according to an embodiment of the utility model for positioning a workpiece.

Fig. 8 is a perspective view of a workpiece positioning device according to an embodiment of the utility model after positioning a workpiece.

Reference numerals illustrate:

100-base, 110-first guiding mechanism, 111-first guiding groove, 112-guiding column, 120-spring bolt accommodation hole;

200-positioning components, 210-positioning pieces, 211-positioning columns, 212-positioning balls, 220-sliding blocks, 221-assembling blocks, 222-assembling bits, 223-lock tongue limiting holes, 230-first guide matching mechanisms, 231-first guide blocks and 232-guide holes;

300-locking component, 310-spring bolt, 320-locking seat, 321-inner cavity, 330-spring bolt driving mechanism, 331-first driving piece, 332-second driving piece, 340-spring bolt resetting mechanism, 341-resetting column, 342 second resetting piece;

400-workpiece, 410-locating surface;

500-workpiece clamping assembly.

Detailed Description

The following description of the embodiments of the present utility model will be further provided with reference to the accompanying drawings, in which the directions are defined for convenience of description, and the definitions of the directions and orientations are intended to clearly describe relative positional relationships, and are not intended to limit the actual directions of the product or apparatus during production, use, sales, etc. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Furthermore, in the present utility model, the plurality means two or more, and satisfies the conventional arrangement and the number of necessary arrangements in the art. Furthermore, unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "secured," and the like should be construed broadly, as for example, they may be fixedly attached, removably attached, or integrally formed; the two can be directly connected or indirectly connected through an intermediate medium; the specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

For ease of illustration, a coordinate system is shown in FIG. 1, wherein relative orientation indications of "up, down, left, right, front, rear" are given, and reference is made to the orientation of FIG. 1 for the description of the specific configuration of the workpiece positioning apparatus.

Referring to fig. 1, 2 and 3, a workpiece positioning device is provided in a first embodiment, and the workpiece positioning device includes a base 100, a positioning assembly 200 and a locking assembly 300. The base 100 is configured to be fixedly disposed at a predetermined position, for example, fixedly disposed at a side end of a workpiece clamping assembly 500, as shown in fig. 7 or 8, the workpiece clamping assembly 500 is configured to carry a workpiece 400 to be processed, and the positioning assembly 200 is configured to position the workpiece 400 on the workpiece clamping assembly 500 in at least one direction; in this embodiment, the positioning assembly 200 is used for positioning the workpiece 400 in the front-rear direction.

The positioning assembly 200 includes a positioning member 210 and a slider 220, wherein the positioning member 210 is disposed on the slider 220, and the slider 220 is disposed on the base 100 and moves between a positioning position and an avoiding position relative to the base 100. The locking assembly 300 cooperates with the base 100 and the positioning assembly 200, respectively, to lock or release the base 100 and the positioning assembly 200 to or from each other at the positioning position. The locking in this embodiment and the present utility model means that the base 100 and the positioning component 200 are locked to each other and cannot move relatively; the release in this embodiment and the present utility model means that the base 100 and the positioning component 200 are unlocked and can move relatively.

In addition, in the present embodiment and the present utility model, the positioning position and the avoiding position should be understood or defined as: when the positioning assembly 200 is in the positioning position (the position shown in fig. 7), the positioning member 210 is used for positioning in an abutting manner with the positioning surface 410 of the workpiece 400 to be positioned; when the positioning assembly 200 is in the avoiding position (the position shown in fig. 8), the positioning member 210 leaves the positioning surface 410 of the positioned workpiece 400, and the positioning member 210 does not abut against the positioning surface 410 on the moving path of the positioned workpiece 400.

In this embodiment, the base 100 is provided with the first guiding mechanism 110 disposed along the left-right direction, the slider 220 is provided with the first guiding engaging mechanism 230 disposed along the left-right direction, and the first guiding mechanism 110 and the first guiding engaging mechanism 230 are engaged with each other and movably guide the slider 220 between the positioning position and the avoiding position along the left-right direction relative to the base 100.

As a specific embodiment, the first guiding mechanism 110 includes two first guiding grooves 111 formed on the upper surface of the base 100 in a downward direction, and the first guiding matching mechanism 230 includes two first guiding blocks 231 protruding downward from the lower portion of the slider 220, and the two first guiding blocks 231 are respectively embedded into the two first guiding grooves 111 and move in the left-right direction.

Referring further to fig. 1, 2 and 3, guide holes 232 are formed in the two first guide blocks 231 in the left-right direction, respectively, and guide posts 112 disposed in the left-right direction are respectively mounted in the two first guide grooves 111; during assembly, after the two first guide blocks 231 are respectively embedded into the two first guide grooves 111, the two guide posts 112 are installed from the side surface of the base 100, so that one end of each of the two guide posts 112 is fixedly assembled with the side surface of the base 100, and the other end of each of the two guide posts is respectively penetrated into the two guide holes 232. In this way, both stability of dual guiding is ensured and upward disengagement of the positioning assembly 200 relative to the base 100 is avoided.

With continued reference to fig. 1, an assembly block 221 is fixedly disposed above the slider 220 of the positioning assembly 200; the positioning piece 210 comprises a positioning column 211 and a positioning ball 212, the positioning piece 210 is arranged along the vertical extension, the lower end of the positioning column 211 is fixed on the assembly block 221, and the upper end of the positioning column is provided with the positioning ball 212; the diameter of the positioning ball 212 is larger than the diameter of the positioning post 211. Thus, when the positioning element 210 abuts against the positioning surface 410 of the workpiece 400, the positioning ball 212 abuts against the positioning surface 410 of the workpiece 400, so that the contact area between the positioning element 210 and the workpiece 400 can be reduced, the abrasion is reduced, and the error in the positioning process is further reduced.

As shown in fig. 1 and 4, the locking assembly 300 includes a latch 310, a locking seat 320, a latch driving mechanism 330, and a latch return mechanism 340. The base 100 is provided with a bolt accommodating hole 120 which is vertically penetrated (the lower end opening of the bolt accommodating hole 120 is subsequently plugged by a plug), the right side of the upper side of the sliding block 220 relative to the assembly block 221 is provided with an assembly position 222, and the sliding block 220 below the assembly position 222 is provided with a bolt limiting hole 223 which is vertically penetrated. The bolt 310 is disposed in the bolt accommodating hole 120, and an upper end of the bolt 310 extends out of or retracts into an upper end opening of the bolt accommodating hole 120. Wherein, the bolt driving mechanism 330 is used for driving the upper end of the bolt 310 to retract into the upper end opening of the bolt accommodating hole 120, and the bolt resetting mechanism 340 is used for driving the upper end of the bolt 310 to extend out of the upper end opening of the bolt accommodating hole 120. The specific construction of the locking seat 320, the latch actuation mechanism 330 and the latch return mechanism 340 are described in further detail below.

When the positioning assembly 200 is at the positioning position, the lock tongue accommodating hole 120 is in alignment communication with the lock tongue limiting hole 223, and meanwhile, when the upper end of the lock tongue 310 is driven by the lock tongue resetting mechanism 340 to extend out of the upper end opening of the lock tongue accommodating hole 120 and be clamped into the lock tongue limiting hole 223, the base 100 and the positioning assembly 200 are locked with each other, and cannot move relatively. When the positioning assembly 200 is at the positioning position, the lock tongue accommodating hole 120 is in alignment communication with the lock tongue limiting hole 223, and simultaneously when the upper end of the lock tongue 310 is driven by the lock tongue driving mechanism 330 to retract into the upper end opening of the lock tongue accommodating hole 120, the base 100 and the positioning assembly 200 are released from each other, and the base 100 and the positioning assembly 200 can move relatively. In addition, when the positioning assembly 200 moves rightward toward the retracted position with respect to the base 100, the latch bolt receiving hole 120 and the latch bolt limiting hole 223 are displaced from each other in the left-right direction, during which the upper end of the latch bolt 310 remains retracted in the upper end opening of the latch bolt receiving hole 120.

With continued reference to fig. 1 and 4, the locking seat 320 is fixedly disposed on the assembling bit 222, and the latch driving mechanism 330 includes a first driving member 331 and a second driving member 332, where the first driving member 331 is movably disposed in the inner cavity 321 of the locking seat 320; the lower side wall of the locking seat 320 is provided with a communication groove 322, an inner cavity 321 of the locking seat 320 is communicated with the lock tongue limiting hole 223 through the communication groove 322, a second driving piece 332 is movably arranged in the inner cavity 321 of the locking seat 320 and the lock tongue limiting hole 223 along the up-down direction, the upper end of the second driving piece 332 is provided with a first driving inclined surface, the left end of the first driving piece 331 is provided with a second driving inclined surface, and the first driving inclined surface is in fit with the second driving inclined surface; the lower end of the second driver 332 is adapted to be in abutting engagement with the tongue 310.

The latch bolt reset mechanism 340 includes a reset post 341 and a second reset member 342; the reset column is fixed in the lock tongue accommodating hole 120, and the upper end of the reset column 341 is inserted into the lock tongue 310; the second restoring member 342 is sleeved on the restoring column 341 and disposed between the outer wall of the restoring column and the inner wall of the locking bolt 310, and the second restoring member 342 provides an upward force to the locking bolt 310. When the lock tongue accommodating hole 120 is aligned with the lock tongue limiting hole 223, the lock tongue resetting mechanism 340 can automatically reset the lock tongue 310 upwards, so as to further improve convenience. In this embodiment, the second restoring member 342 adopts a compression spring structure, when the lock tongue 310 moves downward, the compression spring is contracted, and when the lock tongue accommodating hole 120 is in alignment communication with the lock tongue limiting hole 223, the lock tongue 310 pushes the lock tongue 310 to extend into the lock tongue limiting hole 223 due to the self-restoring property of the compression spring. It will be appreciated that a second return member may be provided directly to provide an upward force directly to the tongue 310.

In this embodiment, when the first driving member 331 moves leftwards, the second driving member 332 is driven to move downwards, so as to drive the upper end of the latch 310 to retract into the upper end opening of the latch accommodating hole 120; when the latch reset mechanism 340 drives the upper end of the latch 310 to extend out of the upper end opening of the latch accommodating hole 120, the latch 310 drives the second driving member 332 to move upwards, and the second driving member 332 drives the first driving member 331 to move rightwards. In fact, the first driving member 331 and the second driving member 332 cooperate with each other to achieve a reversing effect, i.e. to convert a force in a left-right direction into a force in an up-down direction, or to convert a force in an up-down direction into a force in a left-right direction.

As a specific embodiment, the cross section of the second driving member 332 is in a T shape, the lateral end of the second driving member 332 is movably disposed in the communication slot 322 downward, and the vertical end of the second driving member 332 is movably disposed in the communication slot 322 and the lock tongue limiting hole 223 synchronously. In this embodiment, the shape of the communicating groove 322 is adapted to the shape of the transverse end of the second driving member 332, and the shape of the lock tongue limiting hole 223 is adapted to the shape of the vertical end of the second driving member 332, so that the second driving member 332 is prevented from falling down, thereby further improving the reliability and stability of the present utility model.

As a specific embodiment, the cross section of the bolt 310 is inverted T-shaped, the cross section of the bolt accommodating hole 120 is convex, the shape of the upper end of the bolt accommodating hole 120 is adapted to the shape of the vertical end of the bolt 310, the shape of the lower end of the bolt accommodating hole 120 is adapted to the transverse end of the bolt 310, and the depth of the lower end of the bolt accommodating hole 120 is greater than the thickness of the transverse end of the bolt 310. In this way, the bolt 310 can be restricted to slide only in the bolt accommodating hole 120 and the bolt limiting hole 223, and the bolt 310 can be prevented from being separated from the bolt accommodating hole 120 upwards, so that the bolt 310 can be ensured to repeatedly extend into the bolt limiting hole 223 or retract from the bolt limiting hole 223, and the reliability and the stability of the utility model can be further improved.

In addition, a first restoring member (not shown) is further disposed between the guide post 112 and the guide hole 232 (corresponding to between the first guide mechanism 110 and the first guide matching mechanism 230), and in this embodiment, a tension spring is used as the first restoring member. When the positioning assembly 200 is in the positioning position, the first restoring member is in a tensioned state; when the positioning assembly 200 is in the retracted position, the first restoring member returns to its original state, i.e., the first restoring member provides a force to the positioning assembly 200 toward the retracted position.

In this embodiment, the moving direction of the positioning assembly 200 is parallel to the positioning surface 410 of the workpiece 400, i.e. the moving direction of the positioning member 210 is parallel to the positioning surface 410. Also, the positioning surface 410 is preferably a machining surface (surface to be machined).

The workpiece positioning apparatus further includes a clamping and fixing assembly 500 for carrying the workpiece 400 to be processed and fixing the workpiece 400 after the workpiece 400 is positioned so as to facilitate the processing. It is understood that the clamp fixture assembly 500 may be replaced with a snap-fit fixture assembly or a load table assembly. The base 100 is fixedly arranged at the predetermined position of the clamping and fixing assembly, the suction and fixing assembly or the bearing table assembly

The working process and principle of the workpiece positioning device are described as follows:

when a workpiece needs to be positioned, the locking assembly 300 locks the positioning assembly 200 at the positioning position; then, moving the workpiece 400 to enable the positioning surface 410 of the workpiece 400 to be abutted with the positioning piece 210, so as to realize positioning of the workpiece;

the base 100 and the positioning assembly 200 are locked or released from each other. The locking in this embodiment and the present utility model means that the base 100 and the positioning component 200 are locked to each other and cannot move relatively; the release of the present embodiment and the present utility model means that the locking of the base 100 and the positioning component 200 is eliminated, and the two components can move relatively.

When the positioning of the workpiece 400 is completed, the first driving piece 331 can be continuously pushed, the second driving inclined plane of the first driving piece 331 can advance along the horizontal direction, meanwhile, downward pressure is applied to the second driving piece 332, so that the second driving piece 332 is pushed to move downwards along the communication groove 322 and the bolt limiting hole 223, the bolt 310 can be synchronously pushed when the second driving piece 332 moves downwards, at the moment, if the first driving piece 331 is continuously pushed, the bolt 310 can be moved out of the bolt limiting hole 223, after the bolt 310 is completely separated from the bolt limiting hole 223, at the moment, the first driving piece 331 is continuously pushed, at the moment, the sliding block 220 can be pushed to move along the horizontal direction, so that the positioning piece 210 is driven to be far away from the positioning surface 410 of the workpiece 400, and the avoiding position is reached, and at the moment, the workpiece 400 can be processed.

When the processing of the workpiece 400 is completed, the first driving member 331 may be directly pulled, so that when the slider 220 drives the positioning member 210 to return to the positioning position, the lock tongue accommodating hole 120 is in alignment communication with the lock tongue limiting hole 223, and simultaneously, the upper end of the lock tongue 310 is driven by the lock tongue resetting mechanism 340 to extend out of the upper end opening of the lock tongue accommodating hole 120 and be clamped into the lock tongue limiting hole 223, and the base 100 and the positioning assembly 200 are locked with each other, so that the base 100 and the positioning assembly 200 cannot move relatively.

Example two

Referring to fig. 5 and 6, the workpiece positioning device provided in the embodiment also includes a base 100, a positioning assembly 200 and a locking assembly 300. The base 100 is configured to be fixedly disposed at a predetermined position, for example, at a side end of a workpiece clamping assembly 500, as shown in fig. 7 or 8, the workpiece clamping assembly 500 is configured to carry a workpiece 400 to be processed, and the positioning assembly 200 is configured to position the workpiece 400 on the workpiece clamping assembly 500 in at least one direction.

The positioning assembly 200 includes a positioning member 210 and a slider 220, wherein the positioning member 210 is disposed on the slider 220, and the slider 220 is disposed on the base 100 and moves between a positioning position and an avoiding position relative to the base 100. The locking assembly 300 cooperates with the base 100 and the positioning assembly 200, respectively, to lock or release the base 100 and the positioning assembly 200 to or from each other at the positioning position. The locking in this embodiment and the present utility model means that the base 100 and the positioning component 200 are locked to each other and cannot move relatively; the release of the present embodiment and the present utility model means that the locking of the base 100 and the positioning component 200 is eliminated, and the two components can move relatively.

In addition, in the second embodiment and the present utility model, the positioning position and the avoiding position should be understood or defined as: when the positioning assembly 200 is in the positioning position (the position shown in fig. 7), the positioning member 210 is used for positioning in an abutting manner with the positioning surface 410 of the workpiece 400 to be positioned; when the positioning assembly 200 is in the avoiding position (the position shown in fig. 8), the positioning member 210 leaves the positioning surface 410 of the positioned workpiece 400, and the positioning member 210 does not abut against the positioning surface 410 on the moving path of the positioned workpiece 400.

The second embodiment differs from the first embodiment in that: the latch assembly 300 adopts a simpler structure. In the second embodiment, the locking assembly 300 only includes a locking bolt 310, the base 100 is provided with a locking bolt accommodating hole 120 penetrating upward, and the slider 220 is provided with a locking bolt limiting hole 223 penetrating up and down; when the bolt 310 is simultaneously inserted into the bolt accommodating hole 120 and the bolt limiting hole 223, the locking component 300 locks the base 100 and the positioning component 200 at the positioning position; when the latch bolt 310 is separated from one of the latch bolt receiving hole 120 and the latch bolt limiting hole 223, the locking assembly 300 releases the base 100 and the positioning assembly 200 from each other at the positioning position.

The above embodiments are merely for fully disclosing the present utility model, but not limiting the present utility model, and should be considered as the scope of the present disclosure based on the substitution of equivalent technical features of the inventive subject matter without creative work.

Claims (10)

1. A workpiece positioning device, comprising:

the base is used for being fixedly arranged at a preset position;

the positioning assembly comprises a sliding block and a positioning piece arranged on the sliding block, and the sliding block is arranged on the base and moves between a positioning position and an avoiding position relative to the base; when the positioning component is at the positioning position, the positioning piece is positioned in an abutting manner with the positioning surface of the workpiece;

and the locking component is matched with the base and the positioning component respectively and locks or releases the base and the positioning component from each other at the positioning position.

2. The workpiece positioning device according to claim 1, wherein the base is provided with a first guiding mechanism arranged in a left-right direction, the slider is provided with a first guiding matching mechanism arranged in the left-right direction, and the first guiding mechanism and the first guiding matching mechanism are matched with each other and guide the slider relative to the base.

3. The workpiece positioning device according to claim 2, wherein the positioning member is positioned in abutment with a positioning surface of the workpiece movable in the front-rear direction when the positioning assembly is in the positioning position; when the positioning assembly is at the avoiding position, the projections of the positioning piece and the positioning surface in the front-back direction are staggered.

4. A workpiece positioning device as recited in claim 3, wherein said positioning member is disposed above said slider extending in an up-down direction.

5. The workpiece positioning device according to claim 4, wherein the positioning member comprises a positioning column and a positioning ball arranged at the upper end of the positioning column, and the diameter of the positioning ball is larger than that of the positioning column.

6. The workpiece positioning apparatus of any of claims 1 to 5, wherein the locking assembly comprises a locking tongue; the base is provided with a lock tongue accommodating hole, and the slide block is provided with a lock tongue limiting hole; when the lock tongue is simultaneously inserted into the lock tongue accommodating hole and the lock tongue limiting hole, the locking component locks the base and the positioning component at the positioning position; when the lock tongue is separated from at least one of the lock tongue accommodating hole and the lock tongue limiting hole, the locking component releases the base and the positioning group from each other.

7. The workpiece positioning device of claim 6, wherein the locking assembly further comprises a latch bolt drive mechanism and a latch bolt return mechanism; when the positioning assembly is at the positioning position, the lock tongue accommodating hole is in alignment communication with the lock tongue limiting hole, the upper end of the lock tongue stretches out of the upper end opening of the lock tongue accommodating hole and is clamped into the lock tongue limiting hole under the drive of the lock tongue resetting mechanism, or the upper end of the lock tongue is retracted into the upper end opening of the lock tongue accommodating hole under the drive of the lock tongue driving mechanism; when the positioning assembly moves towards the avoiding position relative to the base, the lock tongue accommodating hole and the lock tongue limiting hole are staggered.

8. The workpiece positioning device according to claim 7, wherein the locking assembly further comprises a locking seat fixedly arranged on the sliding block, the lock tongue driving mechanism comprises a first driving piece and a second driving piece, and the first driving piece is movably arranged in an inner cavity of the locking seat left and right; the lower side wall of the locking seat is provided with a communication groove, the inner cavity of the locking seat is communicated with the lock tongue limiting hole through the communication groove, the second driving piece is movably arranged in the inner cavity of the locking seat and the lock tongue limiting hole along the up-down direction, the upper end of the second driving piece is provided with a first driving inclined plane, the left end of the first driving piece is provided with a second driving inclined plane, and the first driving inclined plane is in fit with the second driving inclined plane; the lower end of the second driving piece is used for being in propping fit with the lock tongue.

9. The workpiece positioning device of claim 2, wherein a first return member is disposed between the first guide mechanism and the first guide engagement mechanism, the first return member providing a force to the positioning assembly toward the retracted position.

10. The workpiece positioning apparatus of claim 1, further comprising a clamp-on securing assembly, a snap-on securing assembly, or a carrier assembly for carrying a workpiece; the base is fixedly arranged at a preset position of the clamping and fixing assembly, the suction and fixing assembly or the bearing table assembly.