CN208117410U - A kind of measuring device measuring main shaft top knife amount - Google Patents

Abstract

The utility model discloses a kind of measuring devices for measuring main shaft top knife amount, including：Main body, measuring rod and return springs, which includes the truncated cone portion being adapted to mount in the dress knife chamber of main shaft and the blind rivet portion suitable for cooperating with the pulling claw of the pulling claw seat in main shaft, and main body is configured with axially extending central through hole；Measuring rod is axially displaceably installed in central through hole；The first end of measuring rod stretches out from blind rivet portion and is configured with the pressure head for being suitable for abutting with blind rivet portion in the first end end, and the second end of measuring rod connects with the measuring head of displacement measurement table；Return springs, which are configured to provide when pressure head and blind rivet portion abut against, makes measuring rod support or oppose the elastic force that shift measurement table axially moves of offing normal.Measuring device provided by the utility model measurement top knife amount, it can be achieved that simulation broaching tool state is got off, improves the measurement accuracy of top knife amount.

Description

A kind of measuring device measuring main shaft top knife amount

Technical field

The utility model relates to machining equipment technical field more particularly to a kind of measurement dresses for measuring main shaft top knife amount It sets.

Background technique

Main shaft is the axis that workpiece or cutter rotation is driven on lathe.Processing center machine tool is cutter with main shaft gyration, It is furnished with tool magazine on lathe, claw pulling mechanism is installed inside machine tool chief axis, for needing replacing different tool sharpening when progress Broaching tool and tool changing movement, claw pulling mechanism includes pulling claw seat and pulling claw.The top knife amount of tool-broaching mechanism is main shaft inside main shaft One important parameter, top knife amount are defined as pulling claw seat meeting movable top push type broach handle during broaching tool and generate knife handle Press displacement, the accuracy for pushing up knife measurement have the lathe of main shaft of crucial importance application, and the effect of measurement top knife amount is to keep away Exempt from the loose knife amount because of main shaft in loose knife perhaps broaching tool to be not allowed and cause tool-broaching mechanism damage or tool changer mechanical arm damage.

Currently, it is shown in Figure 1, generally there is a kind of measuring instrument 20 for pushing up knife amount on the market, which includes Standard component 21, measuring rod and dial gauge, principle are the standard components 21 by measuring with rectifying an instrument for standard component 21 Height be set as the theoretical level of knife handle, this structure is by being detected under empty knife-like state, to be converted into reality The error of top knife amount under use state (i.e. broaching tool state), the top knife amount that the method is measured is larger, and stability is not high, still deposits When tool changing occur the phenomenon that swaging clamp, damage tool-broaching mechanism, lathe is caused to break down.

Utility model content

For overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of surveys for measuring main shaft top knife amount Measurement top knife amount, measurement accuracy are higher, it can be achieved that simulation broaching tool state is got off for amount device.

The purpose of this utility model adopts the following technical scheme that realization：

A kind of measuring device measuring main shaft top knife amount, including：Main body, the main body include the dress for being adapted to mount to main shaft Truncated cone portion in knife chamber and the blind rivet portion suitable for cooperating with the pulling claw of the pulling claw seat in main shaft, and the main body is configured with axis To the central through hole of extension；Measuring rod is axially displaceably installed in the central through hole；The first end of the measuring rod from The blind rivet portion, which is stretched out, is simultaneously configured with the pressure head for being suitable for abutting with the blind rivet portion in the first end end, and the of the measuring rod Two ends connect with the measuring head of displacement measurement table；Return springs are configured to when the pressure head and the blind rivet portion abut against There is provided makes the measuring rod to the elastic force to axially move away from the displacement measurement table.

Further, the return springs are the bullet for being mounted in the central through hole and being set on the measuring rod Spring；The hole wall of the central through hole is formed with the first limited step, and the periphery of the measuring rod is formed with first shaft shoulder, the bullet Spring can be limited close to the first end of institute's displacement measurement table by first limited step, and the spring is surveyed far from the displacement The second end of scale can be limited by first shaft shoulder.

Further, washer is additionally provided between the first end of the spring and first limited step；The measurement The periphery of bar is also formed with second shaft shoulder, and second shaft shoulder is suitable for pushing the washer toward the side far from institute's displacement measurement table To movement.

Further, the hole wall of the central through hole is also formed with the second limited step, the periphery of the measuring rod also shape At there is the third shaft shoulder, the third shaft shoulder can be limited the measuring rod to away from described from the second limited step backstop The moving distance of displacement measurement apparent bearing.

Further, the main body further includes：First set section is structure as a whole with the truncated cone portion, and described first Section is covered to be suitable for positioned at the outside of the main shaft；Second set of section, first end are spirally connected with the first set section, described in second end installation Displacement measurement table.

Further, first limited step is formed in second set of section, and second limited step is formed in institute State first set section；The measuring rod includes：Central through hole in first rod segment, with the truncated cone portion be slidably matched and its first End is connect with the pressure head；Second rod segment, first end is connect with the second end of first rod segment and the junction shape of the two At the third shaft shoulder；Third rod segment, first end is connect with the second end of second rod segment and the junction of the two is formed First shaft shoulder, the spring are set in the third rod segment；Central through hole in 4th rod segment, with second set of section It is slidably matched and its first end connects with the second end of the third rod segment, the connection of the 4th rod segment and the third rod segment Place forms second shaft shoulder；The second end of 4th rod segment connects with the measuring head of institute's displacement measurement table.

Further, institute's displacement measurement table is dial gauge, and the dial gauge includes：Table body with dial plate；With it is described The sleeve of table body connection, the motion bar being slidably matched with the sleeve, and it is configured at the measuring head of the end of the motion bar； The dial gauge is mounted on one end away from the blind rivet portion of the main body.

Further, one end away from the blind rivet portion of the main body be configured with connector, the connector have with The frustoconical bore that the central through hole communicates is equipped with wedging part, the centre bore of the wedging part and institute in the frustoconical bore State the sleeve interference fit of dial gauge.

Further, it is also equipped with to deviate from from the frustoconical bore for limiting the wedging part on the connector End cap.

Further, the end cap is spirally connected with the connector.

Compared with prior art, the beneficial effects of the utility model are：Pass through matching for main body, measuring rod and reset spring part Design is closed, it can be achieved that simulating broaching tool state, detects the top knife amount under realistic application conditions, improves the measurement accuracy of top knife amount.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the measuring instrument of measurement top in the prior art knife amount；

Fig. 2 is a kind of structural schematic diagram of measuring device for measuring main shaft top knife amount provided by the embodiment of the utility model；

Fig. 3 is the structural schematic diagram of measuring device in Fig. 2.

In figure：10, claw pulling mechanism；11, pulling claw seat；12, pulling claw；20, measuring instrument；21, standard component；30, measuring device； 31, main body；311, truncated cone portion；3111, first set section；31111, the second limited step；3112, second set of section；31121, One limited step；312, blind rivet portion；313, central through hole；314, connector；32, measuring rod；321, pressure head；322, the first bar Section；323, the second rod segment；324, third rod segment；325, the 4th rod segment；326, first shaft shoulder；327, second shaft shoulder；328, third The shaft shoulder；33, return springs；34, washer；35, dial gauge；351, sleeve；36, wedging part；37, end cap.

Specific embodiment

With reference to the accompanying drawing and specific embodiment, the utility model is described further, it should be noted that Under the premise of not colliding, new reality can be formed between various embodiments described below or between each technical characteristic in any combination Apply example.

In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction " "upper", "lower", The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "horizontal", "vertical", "inner", "outside" is based on attached drawing institute The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore it is practical new to should not be understood as this The limitation of type.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply relatively important Property.

In the description of the utility model, it should be noted that unless otherwise clearly defined and limited, term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, can be fixedly connected, may be a detachable connection, or be integrally connected； It can be mechanical connection, be also possible to be electrically connected；Can be and be directly connected to, can also indirectly connected through an intermediary, or Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be Concrete meaning in the present invention.

Shown in referring to figure 2., a kind of measurement dress for measuring main shaft top knife amount provided by the embodiment of the utility model is shown 30 structure is set, which includes：Main body 31, measuring rod 32 and return springs 33.The main body 31 includes being suitable for peace Truncated cone portion 311 in the dress knife chamber of main shaft, and suitable for the blind rivet with the cooperation of the pulling claw 12 of the pulling claw seat 11 in main shaft Portion 312, and main body 31 is configured with axially extending central through hole 313.It is logical that the measuring rod 32 is axially displaceably installed on center In hole 313, the first end of measuring rod 32, which is stretched out from blind rivet portion 312 and is configured in the first end end, to be suitable for and blind rivet portion 312 The pressure head 321 of abutting, the second end of measuring rod 32 and the survey of displacement measurement table (such as dial gauge 35 shown in the present embodiment) Amount head connects.Return springs 33, which are configured to provide when pressure head 321 is abutted against with blind rivet portion 312, to be made measuring rod 32 support or oppose to off normal The elastic force that shift measurement table axially moves.

In this way, before measuring, first overcome the elastic force of return springs 33 by pressure head 321 by blind rivet portion 312, so that pressure head 321 abut against with blind rivet portion 312, since the second end of measuring rod 32 connects with the measuring head of displacement measurement table, so that the displacement It measures table and generates reading, then the reading of displacement measurement table returns to zero, pressure head 321 is unclamped after zeroing, pressure head 321 is resetting It axially moves, is resetted toward the direction away from displacement measurement table under the preload resilient force of elastic component 33.

When being ready for measurement after zeroing, the truncated cone portion of main body 31 is normally fitted into the dress knife chamber of main shaft and carries out broaching tool, The blind rivet portion 312 of main body 31 and the pulling claw 12 in main shaft cooperate, in this way, elastic power drive of the pressure head 321 in return springs 33 It is lower be mobile to the end face of pulling claw seat 11 and to stick on the end face of pulling claw seat 11, it is changed later by the reading of displacement measurement table at this time Calculation obtains main shaft top knife amount.Such as main body 31 can be designed and sized to, then displacement measurement identical with the size of true knife handle Table reading plus pressure head 321 thickness be then blind rivet portion 312 to 11 end face of pulling claw seat under main spindle broach state idle stroke, in It is that main shaft top knife amount is equal to main shaft design and unloads knife stroke and subtract the idle stroke.Such as pressure head 321 can also be connected to blind rivet When portion 312, pressure head 321 is designed as, the then reading of displacement measurement table identical with the size of true knife handle with the overall dimensions of main body 31 Number is that blind rivet portion 312 is to the idle stroke of 11 end face of pulling claw seat under main spindle broach state, and then knife amount in main shaft top is equal to main shaft Design unloads knife stroke and subtracts the idle stroke.So, it can be achieved that simulating broaching tool state, the top knife under realistic application conditions is detected Amount, improves the measurement accuracy of top knife amount, and the result measured guarantees and main for carrying out necessary debugging and adjustment to main shaft Consistency when axis dispatches from the factory, to improve the efficiency of lathe assembly.

In addition, the case where to prevent cubing from wearing using time length, it is preferable that carry out carburizing to the outer surface of main body 31 Heat treatment, reaches the hardness on its surface HRC58-HRC65 (HRC refers to Rockwell hardness), the hardness of main body 31 is improved, to improve While the service life of cubing, the accuracy of detection data is also improved.

As preferred embodiment, the stability that return springs pre-tighten when to improve measurement every time, return springs To be mounted in central through hole 313 and being set in the spring 33 on measuring rod 32.The hole wall of central through hole 313 is formed with the first limit Position step 31121, the periphery of measuring rod 32 are formed with first shaft shoulder 326, and spring 33 can close to the first end of displacement measurement table It is limited by the first limited step 31121, second end of the spring 33 far from displacement measurement table can be limited by first shaft shoulder 326, be made Spring 33 may be at Pre strained state, be consistent with measuring force when guaranteeing measurement every time, improve duplicate measurements can By property, to improve measurement accuracy.

Preferably, shown in Figure 3, measuring rod 32 slides smoothly effect when to reach measurement, to improve measurement accuracy, Washer 34 is additionally provided between the first end of spring 33 and the first limited step 31121, the periphery of measuring rod 32 is also formed with Two shaft shoulders 327, second shaft shoulder 327 are suitable for pushing washer 34 mobile toward the direction far from displacement measurement table.

Preferably, the hole wall of central through hole 313 is also formed with the second limited step 31111, the periphery of measuring rod 32 also shape At there is the third shaft shoulder 328, the third shaft shoulder 328, which can limit measuring rod 32 by 31111 backstop of the second limited step, supports or opposes and offs normal The moving distance of shift measurement apparent bearing.In this way after unclamping pressure head 321, measuring rod 32 can be limited in the preload elasticity of spring 33 Power effect is lower toward the moving distance for deviating from displacement measurement apparent bearing, to guarantee consistency that measuring rod 32 resets every time.

As preferred embodiment, further include for convenience of installation and processing and fabricating, main body 31：First set section 3111 and Two sets of sections 3112, the first set section 3111 are structure as a whole with truncated cone portion 311, and first set section 3111 is suitable for positioned at main shaft It is external.The first end of second set of section 3112 is spirally connected with first set section 3111, to facilitate installation, the second end peace of second set of section 3112 Fill displacement measurement table.

Preferably, the first limited step 31121 is formed in second set of section 3112, and the second limited step 31111 is formed in A set of section 3111.Referring to Fig. 3, the measuring rod 32 in above-described embodiment includes：First rod segment 322, the second rod segment 323, third bar Section 324 and the 4th rod segment 325.Central through hole 313 in first rod segment 322 and truncated cone portion 311 be slidably matched and its first End is connect with pressure head 321, it is preferable that the fit clearance between the first rod segment 322 and the central through hole 313 of main body 31 is substantially arranged It is 5 μm to 8 μm, this fit clearance both can guarantee that measuring rod 32 can be movable smooth, moreover it is possible to guarantee measuring rod 32 when measuring state Will not because of spring 33 measuring force and cause to deviate.The first end of second rod segment 323 is connect with the second end of the first rod segment 322 And the junction of the two forms the third shaft shoulder 328, it is preferable that first rod segment 322 is connected through a screw thread with the second rod segment 323. The first end of third rod segment 324 is connect with the second end of the second rod segment 323 and the junction of the two forms first shaft shoulder 326, and And the spring 33 in above-described embodiment is set in third rod segment 324, such as can the third rod segment 324 and the second rod segment 323 It is connected through a screw thread.Central through hole 313 in 4th rod segment 325 and second set of section 3112 is slidably matched and its first end and third The second end of rod segment 324 connects, and the junction of the 4th rod segment 325 and third rod segment 324 forms second shaft shoulder 327, and the 4th bar The second end of section 325 connects with the measuring head of displacement measurement table.In this way, can be convenient for assembling measuring device 30, while Convenient for manufacturing to measuring rod 32, cost is manufactured to reduce.

As preferred embodiment, displacement measurement table is dial gauge 35, which includes：Table with dial plate Body, the sleeve 351 being connect with table body, the motion bar being slidably matched with sleeve 351, and it is configured at the survey of the end of the motion bar Measure head.The dial gauge 35 is mounted on one end away from blind rivet portion 312 of main body 31.

Preferably, one end away from blind rivet portion 312 of main body 31 is configured with connector 314, and connector 314 has and center The frustoconical bore that through-hole 313 communicates is equipped with wedging part 36, the centre bore of wedging part 36 and the set of dial gauge 35 in frustoconical bore Cylinder 351 is interference fitted.In this way, being clamped by wedging part 36 to dial gauge 35, it is ensured that measuring device 30 normally makes It will not be loosened in, to reduce measurement error.

Preferably, the end cap 37 deviate from from frustoconical bore for limiting wedging part 36 is also equipped on connector 314.For Facilitate processing, end cap 37 can be for example connected through a screw thread with connector 314.

When pressure head 321 is connected to blind rivet portion 312, the overall dimensions of pressure head 321 and main body 31 are designed to true knife When the size of handle is identical, using the measuring device 30 of above-mentioned measurement main shaft top knife amount, the measurement method packet of main shaft top knife amount is measured It includes：

Step is reset, pressure head 321 is pressed, abuts against pressure head 321 with blind rivet portion 312, then by the reading of displacement measurement table Number zeroing.

The truncated cone portion 311 of main body 31 is inserted into the dress knife chamber of main shaft by measuring process, is carried out normally broaching tool and is acted, The pulling claw 12 of pulling claw seat 11 in blind rivet portion 312 and main shaft cooperates, and pressure head 321 is under the driving of return springs 33 to pulling claw seat 11 end is mobile and reclines to the end face of pulling claw seat 11, and the reading of displacement measurement table is the drop-down of main spindle broach state at this time The idle stroke of nail portion 312 to 11 end face of pulling claw seat.

Scaling step show that main shaft top knife amount, top knife amount are equal to main shaft design and unload by the reading conversion of displacement measurement table Knife stroke subtracts the idle stroke directly measured.It can be detected to obtain top knife amount of the main shaft under certain amount of forging a knife, this survey in this way Amount method detects the top knife amount under realistic application conditions by simulation broaching tool state, improves the measurement accuracy of top knife amount.

The measuring device 30 of measurement main shaft top knife amount provided by the utility model has large range of versatility, can be simultaneously It is applicable in BT series knife handle interface, BBT series knife handle interface, ISO series knife handle interface, application and popularization value with higher.

Above embodiment is only preferred embodiments of the present invention, cannot be protected with this to limit the utility model Range, the variation of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacement belong to In the utility model range claimed.

Claims (10)

1. a kind of measuring device for measuring main shaft top knife amount, which is characterized in that including：

Main body, the main body include be adapted to mount to main shaft dress knife chamber in truncated cone portion and suitable for the pulling claw in main shaft The blind rivet portion of the pulling claw cooperation of seat, and the main body is configured with axially extending central through hole；

Measuring rod is axially displaceably installed in the central through hole；The first end of the measuring rod is stretched from the blind rivet portion It is configured with out and in the first end end pressure head for being suitable for abutting with the blind rivet portion, the second end of the measuring rod and displacement are surveyed The measuring head of scale connects；

Return springs, being configured to provide when the pressure head and the blind rivet portion abut against makes the measuring rod to away from described The elastic force that displacement measurement table axially moves.

2. a kind of measuring device for measuring main shaft top knife amount as described in claim 1, which is characterized in that the return springs For the spring for being mounted in the central through hole and being set on the measuring rod；The hole wall of the central through hole is formed with first Limited step, the periphery of the measuring rod are formed with first shaft shoulder, first end energy of the spring close to institute's displacement measurement table Enough to be limited by first limited step, second end of the spring far from institute's displacement measurement table can be by first shaft shoulder Limit.

3. a kind of measuring device for measuring main shaft top knife amount as claimed in claim 2, which is characterized in that the first of the spring Washer is additionally provided between end and first limited step；The periphery of the measuring rod is also formed with second shaft shoulder, and described Two shaft shoulders are suitable for pushing the washer mobile toward the direction far from institute's displacement measurement table.

4. a kind of measuring device for measuring main shaft top knife amount as claimed in claim 3, which is characterized in that the central through hole Hole wall is also formed with the second limited step, and the periphery of the measuring rod is also formed with the third shaft shoulder, and the third shaft shoulder can be by The second limited step backstop is to limit the measuring rod to the moving distance for deviating from the displacement measurement apparent bearing.

5. a kind of measuring device for measuring main shaft top knife amount as claimed in claim 4, which is characterized in that the main body is also wrapped It includes：First set section is structure as a whole with the truncated cone portion, and the first set section is suitable for positioned at the outside of the main shaft；The Two sets of sections, first end are spirally connected with the first set section, and second end installs institute's displacement measurement table.

6. a kind of measuring device for measuring main shaft top knife amount as claimed in claim 5, which is characterized in that first limiting stand Rank is formed in second set of section, and second limited step is formed in the first set section；

The measuring rod includes：Central through hole in first rod segment, with the truncated cone portion is slidably matched and its first end and institute State pressure head connection；Second rod segment, first end is connect with the second end of first rod segment and the junction of the two formed it is described The third shaft shoulder；Third rod segment, first end is connect with the second end of second rod segment and the junction of the two forms described One shaft shoulder, the spring are set in the third rod segment；Central through hole sliding in 4th rod segment, with second set of section is matched It closes and its first end connects with the second end of the third rod segment, the junction of the 4th rod segment and the third rod segment is formed Second shaft shoulder；The second end of 4th rod segment connects with the measuring head of institute's displacement measurement table.

7. such as a kind of measuring device for measuring main shaft top knife amount described in any one of claims 1 to 6, which is characterized in that institute Displacement measurement table is dial gauge, and the dial gauge includes：Table body with dial plate；The sleeve being connect with the table body, with institute The motion bar that sleeve is slidably matched is stated, and is configured at the measuring head of the end of the motion bar；The dial gauge is mounted on institute State one end away from the blind rivet portion of main body.

8. a kind of measuring device for measuring main shaft top knife amount as claimed in claim 7, which is characterized in that the main body deviates from The one end in the blind rivet portion is configured with connector, and the connector has the frustoconical bore communicated with the central through hole, described Wedging part is installed, the centre bore of the wedging part and the sleeve of the dial gauge are interference fitted in frustoconical bore.

9. a kind of measuring device for measuring main shaft top knife amount as claimed in claim 8, which is characterized in that on the connector also The end cap deviate from from the frustoconical bore for limiting the wedging part is installed.

10. a kind of measuring device for measuring main shaft top knife amount as claimed in claim 9, which is characterized in that the end cap and institute Connector is stated to be spirally connected.