CN209364382U - Fixture for grinding machine - Google Patents

Abstract

The utility model provides a kind of fixture for grinding machine, which includes: collet, has putting hole, putting hole is for placing workpiece；Fixation kit is movably disposed in putting hole, and fixation kit has the fixation position and the first evacuation position of fixed workpiece for fixing workpiece, fixation kit；Component is pre-tightened, is movably disposed on collet, the outside that component is located at collet is pre-tightened, pre-tightens pre-stressed position and the second evacuation position that component has fixed workpiece；Actuator, movable to be arranged on collet, actuator is drivingly connected with fixation kit and preload component, and actuator is mobile for driving fixation kit and preload component.By technical solution provided by the present application, it is able to solve the low problem of positioning accuracy in the prior art.

Description

Fixture for grinding machine

Technical field

The utility model relates to technical fields of mechanical processing, in particular to a kind of fixture for grinding machine.

Background technique

Currently, the fixture of grinding machine relies primarily on and can be manually rotated screw rod, it is artificial using screw-pressing workpiece, and when being loaded Shaking will appear installation error, not can guarantee workpiece accurate positioning, and then cause the product qualification rate of processing lower, product need to be into Row is done over again, and production efficiency is lower.Therefore, it using positioning in the prior art and clamping device, asks there are positioning accuracy is low Topic.

Utility model content

The utility model provides a kind of fixture for grinding machine, to solve the problems, such as that positioning accuracy in the prior art is low.

The utility model provides a kind of fixture for grinding machine, and fixture for grinding machine includes: collet, has putting hole, and putting hole is used for Place workpiece；Fixation kit is movably disposed in putting hole, and fixation kit has solid for fixing workpiece, fixation kit Determine the fixation position and the first evacuation position of workpiece；Component is pre-tightened, is movably disposed on collet, component is pre-tightened and is located at folder The outside of set pre-tightens pre-stressed position and the second evacuation position that component has fixed workpiece；Actuator, movable setting are being pressed from both sides It puts on, actuator is drivingly connected with fixation kit and preload component, and actuator is for driving fixation kit and pre-tightening component It is mobile.

Further, it is provided with mounting hole on the side wall of collet, mounting hole is connected to putting hole, and the setting of actuator part exists In mounting hole.

Further, fixation kit includes fixing piece, and fixing piece is elastic component, and fixing piece has the first end being oppositely arranged And second end, the first end of fixing piece are fixed on collet, the second end of fixing piece is free end.

Further, fixation kit further includes limiting stand, and the side towards workpiece of fixing piece is arranged in limiting stand, and limits The second end of fixing piece is arranged in position platform, and the surface towards workpiece side of limiting stand is arc, so that limiting stand and workpiece Outer surface matches.

Further, the extending direction of fixing piece and the extending direction of putting hole are identical, and fixing piece part is located at installation On the extending direction in hole, the side of fixing piece towards mounting hole is provided with limiting groove, and limiting groove is for the end with actuator Portion's cooperation limit.

Further, pre-tightening component includes pressing piece and shaft, and shaft is arranged on collet, and pressing piece, which has, to be oppositely arranged Turning end and operating side, the turning end of pressing piece be rotatably arranged on collet by shaft, actuator and pressing piece drive Dynamic connection, operating side have bending part, and in pre-stressed position, the axis direction of operating side towards collet is bent pressing piece, with logical Operating side is crossed to be clamped workpiece.

Further, one end of actuator passes through pressing piece and is drivingly connected with fixation kit, is arranged on actuator limited The side of the separate collet of pressing piece is arranged in position boss, positive stop lug boss, and pre-tightening component further includes the first elastic component, the first elasticity Part is set on actuator, and one end of the first elastic component is abutted with pressing piece, and the other end of the first elastic component is abutted with collet.

Further, pre-tightening component further includes the second elastic component, and the end of collet, and the second bullet is arranged in the second elastic component One end of property part is fixed on collet, and the other end of the second elastic component is located at the lower section of pressing piece and abuts with pressing piece.

Further, pre-tightening component further includes support, and support is fixed on collet, has on support and is oppositely arranged The both ends correspondence of two mounting holes, shaft is threaded through in mounting hole, adjustment hole is provided on pressing piece, mounting hole and adjustment hole are equal For kidney slot, so that pressing piece is adjustable along the axis direction position of collet.

Further, fixture for grinding machine further include: one end of locating part, locating part is threaded through on collet, and locating part position Adjustably it is arranged in putting hole, locating part is for limiting position of the workpiece in putting hole.

Further, the extending direction of locating part and the extending direction of putting hole are identical, fixture for grinding machine further include: sleeve, It is arranged in putting hole, and one end connection of the close workpiece of one end of sleeve and locating part；Adsorption piece is arranged in sleeve, And adsorption piece is located at one end of the close workpiece of sleeve, adsorption piece is used to mutually adsorb with the end of workpiece.

Further, fixation kit, preload component are respectively positioned on the top of putting hole, and the width of putting hole bottom is towards far from pre- The direction of tight component is gradually reduced, and the bottom of putting hole is arc transition.

Using the technical solution of the utility model, which includes collet, fixation kit, pre-tightens component and driving Part.Wherein, the putting hole on collet is for placing workpiece, and fixation kit is movably disposed in putting hole, and fixation kit For fixing workpiece, pre-tightens component and actuator is movably disposed on collet, and pre-tighten the outside that component is located at collet. When carrying out clamping to workpiece, workpiece is placed in the putting hole in collet first, fixed group is then driven by actuator It part and pre-tightens component and is moved to workpiece, workpiece is clamped and axially position using the preload effect for pre-tightening component, benefit Workpiece is fixed with fixation kit and centralized positioning.It, can be simultaneously using solid by driving actuator by above structure Determine component and pre-tighten component that workpiece is fixed and being positioned in advance, avoids occurring installation because of artificial shaking when being loaded and missing Difference, and then it is able to ascend the positioning accuracy of device.

Detailed description of the invention

The accompanying drawings constituting a part of this application is used to provide a further understanding of the present invention, this is practical Novel illustrative embodiments and their description are not constituteed improper limits to the present invention for explaining the utility model. In the accompanying drawings:

Fig. 1 shows the diagrammatic cross-section according to fixture for grinding machine provided by the embodiment of the utility model；

Fig. 2 shows the structural schematic diagrams according to fixture for grinding machine provided by the embodiment of the utility model；

Fig. 3 shows the structural schematic diagram of the fixation kit in Fig. 1；

Fig. 4 shows another structural schematic diagram of the fixation kit in Fig. 1；

Fig. 5 shows the diagrammatic cross-section at the A in Fig. 1；

Fig. 6 shows another structural schematic diagram according to fixture for grinding machine provided by the embodiment of the utility model.

Wherein, the above drawings include the following reference numerals:

10, collet；11, workpiece；

20, fixation kit；21, limiting stand；22, limiting groove；

30, component is pre-tightened；31, pressing piece；311, adjustment hole；32, shaft；33, the first elastic component；34, the second elastic component； 35, support；

40, actuator；41, positive stop lug boss；

50, locating part；

60, sleeve；

70, adsorption piece.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Be to the description only actually of at least one exemplary embodiment below it is illustrative, never as to this is practical Novel and its application or any restrictions used.Based on the embodiments of the present invention, those of ordinary skill in the art are not having Every other embodiment obtained under the premise of creative work is made, is fallen within the protection scope of the utility model.

As depicted in figs. 1 and 2, the utility model embodiment provides a kind of fixture for grinding machine, which includes collet 10, fixation kit 20, preload component 30 and actuator 40.Wherein, collet 10 has putting hole, and putting hole is for placing workpiece 11.Fixation kit 20 is movably disposed in putting hole, and fixation kit 20 is for fixing workpiece 11, and fixation kit 20 has The fixation position of fixed workpiece 11 and the first evacuation position.When fixation kit 20 is in a fixed position, 20 energy of fixation kit Enough and workpiece 11 fits closely, and completes the fixation and centralized positioning of workpiece 11.It pre-tightens component 30 and is movably disposed in collet 10 On, the outside that component 30 is located at collet 10 is pre-tightened, and pre-tighten pre-stressed position and second of the component 30 with fixed workpiece 11 and keep away Allow position.Workpiece 11 can be pre-tightened by pre-tightening component 30, when being installed to workpiece 11, be pressed without being pressed with hand Head simplifies the positioning accuracy for operating and improving device.Actuator 40 is movable to be arranged on collet 10, actuator 40 and solid Component 20 is determined and pre-tightens component 30 to be drivingly connected, to reduce the volume of device.Using the above structure, it is driven by driving Moving part 40 can drive fixation kit 20 simultaneously and pre-tighten the movement of component 30, and then realize the consolidating to workpiece 11 of fixation kit 20 Preload fixed and that preload component 30 is to workpiece 11.

Using fixture for grinding machine provided in this embodiment, which includes collet 10, fixation kit 20, pre-tightens component 30 With actuator 40.Wherein, for the putting hole that collet 10 has for placing workpiece 11, fixation kit 20 is movably disposed in placement It in hole, pre-tightens component 30 and actuator 40 is movably disposed on collet 10, and pre-tighten component 30 and be located at the outer of collet 10 Side.Specifically, when carrying out clamping to workpiece 11, it is in the first evacuation position in fixation kit 20 and pre-tightens component 30 and be in the Under the premise of two evacuation positions, workpiece 11 is placed in the putting hole in collet 10, then rotary drive 40 makes its driving It pre-tightens component 30 workpiece 11 pre-tighten and axially position, and drives that workpiece 11 is fixed in fixation kit 20 and center is fixed Position.Using fixture for grinding machine provided by the present application, component using fixation kit 20 and can be pre-tightened simultaneously by driving actuator 40 30 pairs of workpiece 11 are fixed and position, and avoid installation error occur because of artificial shaking when being loaded, solve existing skill The low problem of positioning accuracy in art.

Specifically, being provided with mounting hole on the side wall of collet 10, and mounting hole is connected to putting hole, 40 part of actuator is set It sets in mounting hole.Also, screw thread is provided in mounting hole, the mode that actuator 40 is connected through a screw thread and collet 10 carry out Connection, can be realized fixation kit 20 by rotary drive 40 and pre-tightens component 30 and move up and down, thus to workpiece 11 into Row is pre-tightened and is fixed.It in the present embodiment, can be in the end of the separate collet 10 of actuator 40 for the ease of rotary drive 40 Handle is set, and sets left hand thread for the screw thread on actuator 40, can prevent from unscrewing actuator manually after processing is completed Encounter grinding wheel due to inertia when 40 and cause safety accident.Specifically, screw thread can be passed through for the ease of assembly and later maintenance Handle and actuator 40 are installed together by the mode of connection.

Specifically, fixation kit 20 includes fixing piece, fixing piece is elastic component, and fixing piece has the first end being oppositely arranged And second end, and the first end of fixing piece is fixed on collet 10, the second end of fixing piece is free end.Wherein, fixing piece The mode that first end is connected through a screw thread is fixed with collet 10, is arranged such and was not only tieed up convenient for assembly but also convenient for the later period Shield.Wherein, the second end of fixing piece is in close contact when compressing with workpiece 11, in the work for not being driven 40 lower end load of part Used time can be restored to the state isolated with workpiece 11.

As shown in figure 3, fixation kit 20 further includes limiting stand 21, limiting stand 21 be arranged in fixing piece towards workpiece 11 Side, and the second end of fixing piece is arranged in limiting stand 21, the surface towards 11 side of workpiece of limiting stand 21 is arc, so that Limiting stand 21 and the outer surface of workpiece 11 match.Specifically, in the present embodiment, the radius of limiting stand 21 and the half of workpiece 11 Diameter is identical, using the above structure, can be close to workpiece 11 when compressing under the action of fixing piece is in actuator 40 with workpiece 11 Fixing piece lower end can be contacted with the contact type of workpiece 11 by point/line be converted to face contact in this way, increased and rub by upper surface It wipes, so that being not easy to skid in clamping process, clamping is more firm, and machining accuracy is higher, improves the fixed effect of device.

As shown in figure 4, the extending direction of fixing piece is identical as the extending direction of putting hole, and fixing piece part is located at installation On the extending direction in hole, the side of fixing piece towards mounting hole is provided with limiting groove 22, and limiting groove 22 is used for and actuator 40 end cooperates limit.Specifically, the size of limiting groove 22 is identical close to the end size of fixing piece as actuator 40, protect Demonstrate,proved actuator 40 screw-in move down after its lower end be embedded just below in limiting groove 22, further improve the positioning accuracy of device with And fixing piece and 40 connective stability of actuator.

Specifically, pre-tightening component 30 includes pressing piece 31 and shaft 32, shaft 32 is arranged on collet 10, and pressing piece 31 has There are the turning end being oppositely arranged and operating side, the turning end of pressing piece 31 is rotatably arranged on collet 10 by shaft 32, Actuator 40 and pressing piece 31 are drivingly connected, and operating side has bending part, and pressing piece 31 is in pre-stressed position, operating side direction folder The axis direction bending of set 10, to be clamped by operating side to workpiece 11.Wherein it is possible to which the extending direction of shaft 32 is set It is set to perpendicular with the axis direction of collet 10,11 table of bending part and workpiece of 31 operating side of pressing piece can be guaranteed by being arranged such Face is parallel, improves pressing piece 31 to the axially position accuracy of workpiece 11.Preferably, in the present embodiment, pressing piece 31 The angle of face and 31 place horizontal plane of pressing piece where bending part is 90 degree, and the width of bending part is less than the width of pressing piece 31 But it is slightly larger than the diameter of workpiece 11, the horizontal location being not only able to achieve to workpiece 11 is arranged such, but also can guarantee the bending in grinding Portion does not touch grinding wheel, improves device security.

Specifically, one end of actuator 40 passes through pressing piece 31 and is drivingly connected with fixation kit 20, set on actuator 40 It is equipped with positive stop lug boss 41, the side of the separate collet 10 of pressing piece 31 is arranged in positive stop lug boss 41.Pre-tightening component 30 further includes the One elastic component 33, the first elastic component 33 are set on actuator 40, and one end of the first elastic component 33 is abutted with pressing piece 31, the The other end of one elastic component 33 is abutted with collet 10.When can make rotary drive 40 by the way that positive stop lug boss 41 is arranged, limit is utilized Position boss 41 is clamped with pressing piece 31, so as to realize that actuator 40 drives pressing piece 31 to move down, reaches positioning The purpose of clamping workpiece 11.Specifically, in the present embodiment, the first elastic component 33 is spring, by pressing spring setting Between part 31 and collet 10, pressing piece 31 can either be reduced using the elastic force of spring when device is clamped workpiece 11 The load being subject to guarantees that pressing piece 31 slowly smoothly moves down, and can be real using the elastic force of spring when unloading workpiece 11 Existing pressing piece 31 automatically resets, and saves the time of unloading workpiece 11.

Preferably, in the present embodiment, it is arranged with screw thread in the positive stop lug boss 41 of actuator 40, specifically, stud Length be less than pressing piece 31 bending part length.When carrying out clamping to workpiece 11, rotary drive 40 simultaneously utilizes limit Boss 41 pushes pressing piece 31, so that pressing piece 31 moves down simultaneously with actuator 40, since the length of stud is less than pressing piece 31 Bending part length so that bending part elder generation contact workpiece 11, since the end of bending part is in horizontality, and then in bending Subordinate keeps workpiece 11 and the holding of bending part end horizontal after pressing workpiece 11, positions so as to complete the horizontal direction of workpiece 11.

Specifically, pre-tightening component 30 further includes the second elastic component 34, wherein the end of collet 10 is arranged in the second elastic component 34 Portion, and one end of the second elastic component 34 is fixed on collet 10, the other end of the second elastic component 34 is located at pressing piece 31 Lower section is simultaneously abutted with pressing piece 31.Specifically, the second elastic component 34 can be fixed on collet 10 by fastener, pass through setting Second elastic component 34 can be further ensured that when pressing piece 31 pushes and slowly steadily move, prevent pressing piece 31 in clamping process The load being subject to is excessive to cause operating side to impact and defective work piece 11 and influence positioning accuracy the generation of workpiece 11.Also, it sets The levelness of pressing piece 31 can be guaranteed by setting the second elastic component 34, reduced and touched on the second elastic component 34 in the pushing of pressing piece 31 The amplitude of fluctuation generated after the plane at end, and then guarantee to remain higher levelness when pressing piece 31 pushes, further Improve the horizontal positioning accuracy of workpiece 11.

Specifically, pre-tightening component 30 further includes support 35, support 35 is fixed on collet 10, has phase on support 35 To two mounting holes of setting, the both ends correspondence of shaft 32 is threaded through in mounting hole, also, is provided with adjustment hole on pressing piece 31 311, mounting hole and adjustment hole 311 are kidney slot, so that pressing piece 31 is adjustable along the axis direction position of collet 10.Using upper Structure is stated, the axially adjustable property of pressing piece 31 may be implemented, by changing the axial position of pressing piece 31, so that device can be with Workpiece suitable for different length.

As shown in Figure 1 and Figure 5, fixture for grinding machine further includes locating part 50, and one end of locating part 50 is threaded through on collet 10, and 50 position of locating part is adjustably arranged in putting hole, specifically, locating part 50 is for limiting position of the workpiece 11 in putting hole It sets.Wherein, locating part 50 is attached by way of being threadedly engaged with collet 10, and tune can be realized by rotary stopper part 50 Position of the whole workpiece 11 in putting hole.By the way that locating part 50 is arranged, it can guarantee the consistency of multiple clamping, so that workpiece 11 Axial position when clamping is fixed each time.

Preferably, the extending direction of locating part 50 and the extending direction of putting hole are identical, and fixture for grinding machine further includes sleeve 60 With adsorption piece 70.Wherein, sleeve 60 is arranged in putting hole, and the one of the close workpiece 11 of one end of sleeve 60 and locating part 50 End is threadedly coupled.Adsorption piece 70 is arranged in sleeve 60, and adsorption piece 70 is located at one end of the close workpiece 11 of sleeve 60, absorption Part 70 is used to mutually adsorb with the end of workpiece 11.Specifically, in the present embodiment, adsorption piece 70 is magnet, and sleeve 60 leans on One end of nearly workpiece 11 has aperture, and the diameter of aperture is less than the diameter of magnet, ensure that magnet does not contact directly with workpiece 11. Using the above structure, can either realize workpiece rapid axial positioning, and can avoid the occurrence of because magnet suction it is excessive caused by work Part extracts difficult problem.

As shown in fig. 6, fixation kit 20, preload component 30 are respectively positioned on the top of putting hole, the width court of putting hole bottom It is gradually reduced far from the direction for pre-tightening component 30, and the bottom of putting hole is arc transition, so as to avoid fixation kit 20 The phenomenon that stress is concentrated is generated when compressing with workpiece 11, and then it is cracked and lead to workpiece positioning accuracy to avoid collet 10 Decline, and the service life of device is improved, further increase the rapid-mounted of workpiece.

Embodiment provided by the utility model is illustrated below with reference to the specific clamping process of fixture for grinding machine:

(1) workpiece 11 is inserted into the putting hole of collet 10, due to the suction of magnet, workpiece is drawn onto sleeve 60 automatically Tapping is required according to actual work pieces process, is determined that workpiece stretches out the length of clip base, is adjusted by screwing locating part 50 The axial position of whole magnet, and then change the axial position of workpiece 11；

(2) axial position for adjusting pressing piece 31 makes to be close to 11 vertical plane of workpiece on the inside of bending part；

(3) rotary drive 40 drives pressing piece 31 to move down therewith counterclockwise, since the length of stud is less than pressing piece 31 Bending part length, bending part elder generation contact workpiece 11, and the levelness of the plane of workpiece is gradually increased, subsequent bending part into One step pushes workpiece 11, keeps the levelness of workpiece consistent with the levelness of bending part, so as to complete the preload and level of workpiece Direction positioning.Handle is continued to rotate, when stud head is closely embedded in limiting groove 22, limiting stand 21 closely connects with workpiece surface After touch, stop operating handle, completes the fixation and radial positioning of workpiece；

(4) handle is rotated clockwise after the completion of grinding, utilizes the elastic force of spring and the second elastic component 34,31 meeting of pressing piece Automatically it moves up, bending part leaves workpiece and takes out workpiece, completes the unloading of workpiece.

The fixture for grinding machine provided through this embodiment, the fixture for grinding machine have structure tight compared to existing fixture for grinding machine It gathers, advantage easy to operate, had not only improved the positioning accuracy of fixture for grinding machine, but also reduce production cost.

It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.

Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments Up to the unlimited the scope of the utility model processed of formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each shown in attached drawing The size of a part is not to draw according to actual proportionate relationship.For skill known to person of ordinary skill in the relevant Art, method and apparatus may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as awarding Weigh part of specification.In shown here and discussion all examples, any occurrence should be construed as merely example Property, not as limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar Label and letter similar terms are indicated in following attached drawing, therefore, once be defined in a certain Xiang Yi attached drawing, then with In attached drawing afterwards do not need that it is further discussed.

In the description of the present invention, it should be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally, Vertically, vertically, it is horizontal " and " pushing up, bottom " etc. indicated by orientation or positional relationship be normally based on orientation or position shown in the drawings Relationship is set, is merely for convenience of describing the present invention and simplifying the description, in the absence of explanation to the contrary, these nouns of locality Do not indicate that and imply that signified device or element must have a particular orientation or be constructed and operated in a specific orientation, because This should not be understood as the limitation to scope of protection of the utility model；The noun of locality " inside and outside " refers to the wheel relative to each component itself Wide is inside and outside.

For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ", " ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction " Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and " in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and And respective explanations are made to the opposite description in space used herein above.

In addition, it should be noted that, limiting components using the words such as " first ", " second ", it is only for be convenient for Corresponding components are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this The limitation of utility model protection range.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (12)

1. a kind of fixture for grinding machine, which is characterized in that the fixture for grinding machine includes:

Collet (10) has putting hole, and the putting hole is for placing workpiece (11)；

Fixation kit (20), is movably disposed in the putting hole, and the fixation kit (20) is for fixing the workpiece (11), the fixation kit (20) has the fixation position and the first evacuation position of the fixed workpiece (11)；

It pre-tightens component (30), is movably disposed on the collet (10), the preload component (30) is located at the collet (10) outside, pre-stressed position and the second evacuation position for pre-tightening component (30) and there is the fixed workpiece (11)；

Actuator (40), it is movable to be arranged on the collet (10), the actuator (40) and the fixation kit (20) with And the preload component (30) is drivingly connected, the actuator (40) is for driving the fixation kit (20) and the preload Component (30) is mobile.

2. fixture for grinding machine according to claim 1, which is characterized in that be provided with installation on the side wall of the collet (10) Hole, the mounting hole are connected to the putting hole, and actuator (40) part setting is in the mounting hole.

3. fixture for grinding machine according to claim 2, which is characterized in that the fixation kit (20) includes fixing piece, described Fixing piece is elastic component, and the fixing piece has the first end and second end being oppositely arranged, and the first end of the fixing piece is fixed On the collet (10), the second end of the fixing piece is free end.

4. fixture for grinding machine according to claim 3, which is characterized in that the fixation kit (20) further includes limiting stand (21), the side towards the workpiece (11) of the fixing piece, and the limiting stand (21) is arranged in the limiting stand (21) The second end of the fixing piece is set, the surface towards the workpiece (11) side of the limiting stand (21) is arc, with The limiting stand (21) and the outer surface of the workpiece (11) is set to match.

5. fixture for grinding machine according to claim 3, which is characterized in that the extending direction of the fixing piece and the putting hole Extending direction it is identical, and the fixing piece part is located on the extending direction of the mounting hole, and the fixing piece is described in The side of mounting hole is provided with limiting groove (22), and the limiting groove (22) is used to cooperate with the end of the actuator (40) Limit.

6. fixture for grinding machine according to claim 1, which is characterized in that the preload component (30) include pressing piece (31) and Shaft (32), the shaft (32) are arranged on the collet (10), and the pressing piece (31) has the turning end being oppositely arranged And operating side, the turning end of the pressing piece (31) are rotatably arranged on the collet (10) by the shaft (32), The actuator (40) and the pressing piece (31) are drivingly connected, and the operating side has bending part, and the pressing piece (31) exists When the pre-stressed position, the axis direction of the operating side towards the collet (10) is bent, to pass through the operating side to institute Workpiece (11) is stated to be clamped.

7. fixture for grinding machine according to claim 6, which is characterized in that one end of the actuator (40) passes through the pressing Part (31) is simultaneously drivingly connected with the fixation kit (20), is provided with positive stop lug boss (41), the limit on the actuator (40) Position boss (41) is arranged in the side far from the collet (10) of the pressing piece (31), and the preload component (30) further includes First elastic component (33), first elastic component (33) are set on the actuator (40), first elastic component (33) One end is abutted with the pressing piece (31), and the other end of first elastic component (33) is abutted with the collet (10).

8. fixture for grinding machine according to claim 7, which is characterized in that the preload component (30) further includes the second elastic component (34), the second elastic component (34) setting is in the end of the collet (10), and one end of second elastic component (34) is solid It is fixed to be arranged on the collet (10), the other end of second elastic component (34) be located at the lower section of the pressing piece (31) and with The pressing piece (31) abuts.

9. fixture for grinding machine according to claim 7, which is characterized in that the preload component (30) further includes support (35), The support (35) is fixed on the collet (10), has two mounting holes being oppositely arranged on the support (35), The both ends correspondence of the shaft (32) is worn in the mounting hole, is provided with adjustment hole (311), institute on the pressing piece (31) Stating mounting hole and the adjustment hole (311) is kidney slot, so that axis side of the pressing piece (31) along the collet (10) It is adjustable to position.

10. fixture for grinding machine according to claim 1, which is characterized in that the fixture for grinding machine further include:

One end of locating part (50), the locating part (50) is threaded through on the collet (10), and the locating part (50) position Adjustably it is arranged in the putting hole, the locating part (50) is for limiting position of the workpiece (11) in the putting hole It sets.

11. fixture for grinding machine according to claim 10, which is characterized in that the extending direction of the locating part (50) with it is described The extending direction of putting hole is identical, the fixture for grinding machine further include:

Sleeve (60) is arranged in the putting hole, and the close work of one end of the sleeve (60) and the locating part (50) One end of part (11) connects；

Adsorption piece (70), setting is in the sleeve (60), and the adsorption piece (70) is located at the close institute of the sleeve (60) One end of workpiece (11) is stated, the adsorption piece (70) is used to mutually adsorb with the end of the workpiece (11).

12. fixture for grinding machine according to claim 1, which is characterized in that the fixation kit (20), the preload component (30) be respectively positioned on the top of the putting hole, the width of the putting hole bottom towards far from the direction for pre-tightening component (30) by It is decrescence small, and the bottom of the putting hole is arc transition.