TWI785717B - Direct-drive high-speed hydrostatic pressure grinder spindle structure - Google Patents

Direct-drive high-speed hydrostatic pressure grinder spindle structure Download PDF

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TWI785717B
TWI785717B TW110128627A TW110128627A TWI785717B TW I785717 B TWI785717 B TW I785717B TW 110128627 A TW110128627 A TW 110128627A TW 110128627 A TW110128627 A TW 110128627A TW I785717 B TWI785717 B TW I785717B
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oil
direct
main shaft
outer sleeve
spindle
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TW110128627A
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TW202306701A (en
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何權乘
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全鑫精密工業股份有限公司
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Abstract

This invention relates to a direct-drive high-speed hydrostatic pressure grinder spindle structure including a direct-drive spindle, a mandrel and an oil pressure box, and the oil pressure box is provided for circulating and guiding a lubricating oil into the direct-drive spindle to form a hydrostatic pressure balance, so that the mandrel of an oil film bearing with the hydrostatic pressure balance is in a suspended status, and when a force is exerted onto the mandrel, the ends of the mandrel have high rigidity and stability to achieve the effects of simplifying the structure and improving the stability of the structure.

Description

直結式高速液靜壓磨床主軸結構Spindle structure of direct-coupled high-speed hydrostatic grinder

本發明係有關於一種直結式高速液靜壓磨床主軸結構，尤指一種應用於減少傳動震動並簡化組成結構之主軸結構所屬技術領域者。 The present invention relates to a main shaft structure of a direct-coupled high-speed hydrostatic grinding machine, in particular to the technical field of a main shaft structure applied to reduce transmission vibration and simplify the composition structure.

按，目前習知液靜壓主軸結構如圖6所示，其係包括一油壓箱體30及一液靜壓軸組50，該液靜壓軸組50設有一軸座體51、一主軸52、二軸襯套53、二封蓋54、二後蓋55、一油路分配器56及數節流器57，該軸座體51內形成一腔室510，而該軸襯套53內壁凹陷設有數內油室530，且該軸襯套53內設有數油道531，該數油道531與內油室530導通，其二軸襯套53分別固設於軸座體51兩端，並延伸於腔室510內，且該主軸52設於該二軸襯套53間，該二軸襯套53內側分別與一後蓋55蓋合，而該二軸襯套53外側分別與一封蓋54封合，且該數油道531與油路分配器56及節流器57配合，將潤滑油經油道531導入內油室530形成靜壓承載油膜，使形成於該主軸52與軸襯套53間之靜壓承載油膜壓力平衡，雖其可提升主軸的旋轉加工能力，但其整體組成之結構複雜且須配合設置多組油封及軸承，而主軸52需透過聯軸器與馬達芯軸連接，整體傳動存在震動與能量耗損之穩定性問題，故有改良之必要者。 According to, the conventional hydrostatic main shaft structure is shown in Figure 6 at present, and it is to comprise an oil pressure casing 30 and a hydrostatic shaft group 50, and this hydrostatic shaft group 50 is provided with a shaft base body 51, a main shaft 52, Two axle bushings 53, two sealing covers 54, two rear covers 55, one oil circuit distributor 56 and several restrictors 57, a chamber 510 is formed in the axle seat body 51, and the inner wall of the axle bushing 53 is recessed There are several inner oil chambers 530, and several oil passages 531 are arranged in the shaft bushing 53, the several oil passages 531 are connected with the inner oil chambers 530, and the two shaft bushings 53 are respectively fixed at both ends of the shaft base body 51, and Extending in the cavity 510, and the main shaft 52 is arranged between the two-axis bushings 53, the inner sides of the two-axis bushings 53 are respectively covered with a rear cover 55, and the outer sides of the two-axis bushings 53 are respectively connected with a cover 54 is sealed, and the number of oil passages 531 cooperates with the oil passage distributor 56 and the restrictor 57, and the lubricating oil is introduced into the inner oil chamber 530 through the oil passage 531 to form a static pressure bearing oil film, so that the oil film formed on the main shaft 52 and the bushing The static pressure bearing oil film between the sleeves 53 balances the pressure. Although it can improve the rotating processing capacity of the main shaft, its overall structure is complex and requires multiple sets of oil seals and bearings. The main shaft 52 needs to pass through the coupling and the motor spindle. There are vibration and energy loss stability problems in the connection and overall transmission, so it is necessary to improve.

本發明有鑑於習知液靜壓主軸結構之結構組成複雜性高及結構運行穩定性差之問題，乃完成本發明之直結式高速液靜壓磨床主軸結構。 In view of the problems of high structural composition complexity and poor structural operation stability of the conventional hydrostatic spindle structure, the present invention completes the direct-connected high-speed hydrostatic grinding machine spindle structure of the present invention.

本發明之主要目的在於提供一種直結式高速液靜壓磨床主軸結構，其係包括一直結式主軸本體、一心軸本體及一油壓箱體，所述直結式主軸本體設有一主軸外套筒、一前蓋及一後蓋，該主軸外套筒呈中空設置並於筒內壁向內凹入設有數內油腔室，而該主軸外套筒前側設有一前固定座，且該主軸外套筒後側設有一後固定部，該主軸外套筒之筒身內設有一入油道及一回油道，而該入油道及回油道分別與內油腔室、前固定座及後固定部導通，且該導通處分別設有一節流閥，而該前蓋設有一前油腔室，且該後蓋設有一後油腔室，前述之前蓋與主軸外套筒所設前固定座結合固定，而該後蓋與主軸外套筒所設後固定部結合固定，所述心軸本體設有一軸身，該軸身之二側分設有一前止推環及一後止推環，所述油壓箱體設有一入油導管及一回油導管，其心軸本體容設於直結式主軸本體之主軸外套筒，該心軸本體之軸身相對於主軸外套筒所設數內油腔室，而該心軸本體之前止推環相對設於前蓋所設前油腔室，且該心軸本體之後止推環相對設於後蓋所設後油腔室，而該油壓箱體之入油導管導接至主軸外套筒所設入油道端口，且該油壓箱體之回油導管導接至主軸外套筒所設回油道端口。 The main purpose of the present invention is to provide a direct-connected high-speed hydrostatic grinding machine spindle structure, which includes a direct-connected spindle body, a spindle body and an oil pressure box. The direct-connected spindle body is provided with a spindle outer sleeve, A front cover and a rear cover, the main shaft outer sleeve is hollow, and several inner oil chambers are recessed inwardly on the inner wall of the sleeve, and the front side of the main shaft outer sleeve is provided with a front fixing seat, and the main shaft outer sleeve There is a rear fixing part on the rear side of the cylinder, and an oil inlet passage and an oil return passage are arranged in the cylinder body of the outer sleeve of the main shaft, and the oil inlet passage and the oil return passage are connected with the inner oil chamber, the front fixing seat and the rear oil passage respectively. The fixed part is conducted, and a throttle valve is provided at the conduction place, and the front cover is provided with a front oil chamber, and the rear cover is provided with a rear oil chamber. Combining and fixing, and the rear cover is combined and fixed with the rear fixing part provided by the outer sleeve of the main shaft. The main shaft body is provided with a shaft body, and the two sides of the shaft body are respectively provided with a front thrust ring and a rear thrust ring. The oil pressure box is provided with an oil inlet conduit and an oil return conduit, and its spindle body is accommodated in the spindle outer sleeve of the direct-connected spindle body. The inner oil chamber, and the front thrust ring of the spindle body is opposite to the front oil chamber of the front cover, and the rear thrust ring of the spindle body is opposite to the rear oil chamber of the rear cover, and the oil The oil inlet conduit of the pressure box is connected to the oil inlet port of the main shaft outer sleeve, and the oil return conduit of the oil pressure box is connected to the oil return port of the main shaft outer sleeve.

在一較佳實施例中，進一步設有一直結式馬達，該直結式馬達內設有電磁驅動組，其直結式主軸本體之後蓋與直結式馬達之端側結合，而該心軸本體之軸身穿制固定於電磁驅動組上，以使電磁驅動組作動時直接帶動心軸本體，避免非直接傳動產生之震動與能量耗損，提升結構運行之穩定性及耐受性，以提升本發明之多重實用性。 In a preferred embodiment, a direct-joint motor is further provided, and an electromagnetic drive group is arranged inside the direct-joint motor. It is threaded and fixed on the electromagnetic drive group, so that the electromagnetic drive group directly drives the mandrel body when it is in motion, avoiding vibration and energy consumption caused by indirect transmission, improving the stability and tolerance of the structure operation, and enhancing the multiplex of the present invention. practicality.

在一較佳實施例中，該心軸本體之前止推環及後止推環係一體設置或分離套合設置固定於軸身上，以提升本發明之多重實用性。 In a preferred embodiment, the front thrust ring and the rear thrust ring of the spindle body are integrally arranged or separately fitted and fixed on the shaft body, so as to enhance the multiple practicability of the present invention.

在一較佳實施例中，該入油道及回油道與內油腔室、前固定座及後固定部導通處所設節流閥係為向量式節流閥，當心軸本體於直結式主軸本體之主軸外套筒內轉速提升時，該內油腔室內之壓力可藉由向量式節流閥滑動調整潤滑油之油壓及注油量，以提升本發明之多重實用性。 In a preferred embodiment, the throttling valve set at the conduction place between the oil inlet passage and the oil return passage and the inner oil chamber, the front fixing seat and the rear fixing part is a vector type throttle valve. When the rotation speed of the main shaft outer sleeve of the main body increases, the pressure in the inner oil chamber can be adjusted by sliding the vector throttle valve to adjust the oil pressure and oil injection amount of the lubricating oil, so as to enhance the multiple practicability of the present invention.

在一較佳實施例中，該主軸外套筒及前蓋及後蓋係以螺栓鎖合方式予以結合，以提升本發明之多重實用性。 In a preferred embodiment, the main shaft outer sleeve, the front cover and the rear cover are combined in a bolt-locking manner, so as to enhance the multiple practicability of the present invention.

藉由油壓箱體之入油導管，將潤滑油經主軸外套筒之入油道，導入主軸外套筒之內油腔室及前蓋之前油腔室與後蓋之後油腔室，並由回油道導出至回油導管回油入油壓箱體，而潤滑油於內油腔室、前油腔室及後油腔室中形成液靜壓平衡，使液靜壓平衡之油膜承載心軸本體之軸身、前止推環及後止推環，相對主軸外套筒之內油腔室及前蓋之前油腔室與後蓋之後油腔室形成懸浮狀態，而心軸本體之軸身所設前止推環及後止推環，使心軸本體受力作用時端側具有高剛性及穩定性，以達簡化構成結構及結構穩定性佳之功效。 Through the oil inlet pipe of the oil pressure box, the lubricating oil is introduced into the inner oil chamber of the main shaft outer sleeve, the oil chamber in front of the front cover and the oil chamber behind the rear cover through the oil inlet passage of the main shaft outer sleeve, and From the oil return passage to the oil return conduit, the oil returns to the oil pressure box, and the lubricating oil forms a hydrostatic pressure balance in the inner oil chamber, the front oil chamber and the rear oil chamber, so that the oil film of the hydrostatic pressure balance bears the load The shaft body, front thrust ring and rear thrust ring of the spindle body form a suspended state relative to the oil chamber in the outer sleeve of the spindle, the oil chamber in front of the front cover, and the oil chamber behind the rear cover, while the spindle body The front thrust ring and the rear thrust ring are installed on the shaft body, so that the end side of the mandrel body has high rigidity and stability when the force is applied, so as to achieve the effect of simplifying the structure and good structural stability.

10:直結式主軸本體 10: Direct-coupled spindle body

11:主軸外套筒 11: Spindle outer sleeve

110:內油腔室 110: inner oil chamber

111:前固定座 111: Front fixing seat

112:後固定部 112: Rear fixed part

113:入油道 113: oil inlet passage

114:回油道 114: oil return channel

115:節流閥 115: Throttle valve

12:前蓋 12: Front cover

120:前油腔室 120: front oil chamber

13:後蓋 13:Back cover

130:後油腔室 130: rear oil chamber

20:心軸本體 20: Mandrel body

21:軸身 21: Shaft body

22:前止推環 22: Front thrust ring

23:後止推環 23: rear thrust ring

30:油壓箱體 30: Hydraulic box

31:入油導管 31: Oil inlet conduit

32:回油導管 32: Oil return conduit

40:直結式馬達 40: Direct drive motor

41:電磁驅動組 41: Electromagnetic drive group

50:液靜壓軸組 50: Hydrostatic shaft group

51:軸座體 51: shaft seat body

510:腔室 510: chamber

52:主軸 52:Spindle

53:軸襯套 53: Shaft bushing

530:內油室 530: inner oil chamber

531:油道 531: oil channel

54:封蓋 54: capping

55:後蓋 55:Back cover

56:油路分配器 56:Oil distributor

57:節流器 57: Throttle

[圖1]係本發明直結式高速液靜壓磨床主軸結構之立體組合狀態示意圖。 [Fig. 1] is a schematic diagram of the three-dimensional combined state of the main shaft structure of the direct-coupled high-speed hydrostatic grinding machine of the present invention.

[圖2]係本發明直結式高速液靜壓磨床主軸結構之側視剖面狀態示意圖。 [Fig. 2] is a side view sectional state schematic diagram of the main shaft structure of the direct-connected high-speed hydrostatic grinding machine of the present invention.

[圖3]係本發明直結式高速液靜壓磨床主軸結構之側視剖面油壓箱體相對直結式主軸本體入油與回油作動狀態示意圖。 [Fig. 3] It is a side view cross-sectional view of the main shaft structure of the direct-joint high-speed hydrostatic grinding machine of the present invention, and a schematic diagram of the oil-injecting and oil-returning states of the direct-joining main shaft body.

[圖4]係本發明直結式高速液靜壓磨床主軸結構之第一實施例結合直結式馬達立體分解狀態示意圖。 [Fig. 4] It is the first embodiment of the main shaft structure of the direct-coupled high-speed hydrostatic grinding machine of the present invention combined with the three-dimensional disassembled state diagram of the direct-coupled motor.

[圖5]係本發明直結式高速液靜壓磨床主軸結構之圖3第一實施例側視局部剖面狀態示意圖。 [ Fig. 5 ] is a side view partial cross-sectional view of the first embodiment of Fig. 3 showing the main shaft structure of the direct-connected high-speed hydrostatic grinding machine of the present invention.

[圖6]係本發明直結式高速液靜壓磨床主軸結構之習知液靜壓主軸結構參考圖。 [Fig. 6] It is a reference diagram of the structure of the conventional hydrostatic spindle of the direct-coupled high-speed hydrostatic grinding machine of the present invention.

為使 貴審查委員能進一步瞭解本發明之結構，特徵及其他目的，玆以如后之較佳實施例附以圖式詳細說明如后，惟本圖例所說明之實施例係供說明之用，並非為專利申請上之唯一限制者。 In order to enable your examiners to further understand the structure, features and other purposes of the present invention, the following preferred embodiments are described in detail with accompanying drawings, but the embodiments described in this illustration are for illustration purposes only. It is not the only restriction on the patent application.

請配合參閱圖1、2所示，係本發明直結式高速液靜壓磨床主軸結構之立體組合狀態及側視剖面狀態示意圖，其包括：一直結式主軸本體10，所述直結式主軸本體10設有一主軸外套筒11、一前蓋12及一後蓋13，該主軸外套筒11呈中空設置並於筒內壁向內凹入設有數內油腔室110，而該主軸外套筒11前側設有一前固定座111，且該主軸外套筒11後側設有一後固定部112，該主軸外套筒11之筒身內設有一入油道113及一回油道114，而該入油道113及回油道114分別與內油腔室110、前固定座111及後固定部112導通，且該導通處分別設有一節流閥115，而該前蓋12設有一前油腔室120，且該後蓋13設有一後油腔室130，前述之前蓋12與主軸外套筒11所設前固定座111結合固定，而該後蓋13與主軸外套筒11所設後固定部112結合固定；一心軸本體20，所述心軸本體20設有一軸身21，該軸身21之二側分設有一前止推環22及一後止推環23，其心軸本體20容設於直結式主軸本體10之主軸外套筒11，該軸身21相對於主軸外套筒11所設數內油腔室110，而該 前止推環22相對設於前蓋12所設前油腔室120，且該後止推環23相對設於後蓋13所設後油腔室130；以及一油壓箱體30，所述油壓箱體30設有一入油導管31及一回油導管32，其入油導管31導接至主軸外套筒11所設入油道113端口，而該回油導管32導接至主軸外套筒11所設回油道114端口。 Please refer to Figures 1 and 2, which are schematic diagrams of the three-dimensional combined state and the side-view section state of the direct-connected high-speed hydrostatic grinding machine spindle structure of the present invention, which include: a direct-connected spindle body 10, and the direct-connected spindle body 10 There is a main shaft outer sleeve 11, a front cover 12 and a rear cover 13, the main shaft outer sleeve 11 is hollow, and several inner oil chambers 110 are recessed inwardly on the inner wall of the main shaft outer sleeve, and the main shaft outer sleeve 11. A front fixing seat 111 is provided on the front side, and a rear fixing portion 112 is provided on the rear side of the main shaft outer sleeve 11. An oil inlet passage 113 and an oil return passage 114 are provided in the body of the main shaft outer sleeve 11. The oil inlet passage 113 and the oil return passage 114 communicate with the inner oil chamber 110, the front fixing seat 111 and the rear fixing part 112 respectively, and a throttle valve 115 is provided at the conduction places, and the front cover 12 is provided with a front oil chamber chamber 120, and the rear cover 13 is provided with a rear oil chamber 130, the aforementioned front cover 12 is combined and fixed with the front fixing seat 111 provided by the main shaft outer sleeve 11, and the rear cover 13 is fixed with the rear fixed seat 11 provided by the main shaft outer sleeve 11. Part 112 is combined and fixed; a mandrel body 20, the mandrel body 20 is provided with a shaft body 21, and the two sides of the shaft body 21 are respectively provided with a front thrust ring 22 and a rear thrust ring 23, and the mandrel body 20 It is accommodated in the main shaft outer sleeve 11 of the direct-connected main shaft body 10. The shaft body 21 is provided with several inner oil chambers 110 relative to the main shaft outer sleeve 11, and the The front thrust ring 22 is oppositely arranged on the front oil chamber 120 of the front cover 12, and the rear thrust ring 23 is oppositely arranged on the rear oil chamber 130 of the rear cover 13; and an oil pressure box 30, the The oil pressure box 30 is provided with an oil inlet conduit 31 and an oil return conduit 32. The oil inlet conduit 31 is connected to the port of the oil passage 113 provided on the main shaft outer sleeve 11, and the oil return conduit 32 is connected to the outside of the spindle. The sleeve 11 is provided with an oil return passage 114 port.

藉由上述結構之配合，以完成本發明直結式高速液靜壓磨床主軸結構。 Through the cooperation of the above-mentioned structures, the main shaft structure of the direct-connected high-speed hydrostatic grinding machine of the present invention is completed.

請配合參閱圖1至3所示，係本發明直結式高速液靜壓磨床主軸結構之立體組合狀態、側視剖面狀態及側視剖面油壓箱體相對直結式主軸本體入油與回油作動狀態示意圖，其心軸本體20容設於直結式主軸本體10之主軸外套筒11，該心軸本體20之軸身相對於主軸外套筒11所設數內油腔室110，而該心軸本體20之前止推環22相對設於前蓋12所設前油腔室120，且該心軸本體20之後止推環23相對設於後蓋13所設後油腔室130，而該油壓箱體30之入油導管31導接至主軸外套筒11所設入油道113端口，且該油壓箱體30之回油導管32導接至主軸外套筒11所設回油道114端口，藉由油壓箱體30之入油導管31，將潤滑油經主軸外套筒11之入油道113，導入主軸外套筒11之內油腔室110及前蓋12之前油腔室120與後蓋13之後油腔室130，並由回油道114導出至回油導管32回油入油壓箱體30，而潤滑油於內油腔室110、前油腔室120及後油腔室130中形成液靜壓平衡，使液靜壓平衡之油膜承載心軸本體20之軸身21、前止推環22及後止推環23，相對主軸外套筒11之內油腔室110及前蓋12之前油腔室120與後蓋13之後油腔室130形成懸浮狀態，而心軸本體20之軸身21所設前止推環22及後止推環23，使心軸本體20受力作用時端側具有高剛性及穩定性，以達簡化構成結構及結構穩定性佳之功效。 Please refer to Figures 1 to 3, which are the three-dimensional combined state of the main shaft structure of the direct-joint high-speed hydrostatic grinding machine of the present invention, the side-view section state, and the side-view section oil pressure box relative to the direct-joint main shaft body. State schematic diagram, the spindle body 20 is accommodated in the spindle outer sleeve 11 of the direct-coupled spindle body 10, and the shaft body of the spindle body 20 is provided with an inner oil chamber 110 relative to the spindle outer sleeve 11, and the core The front thrust ring 22 of the shaft body 20 is opposite to the front oil chamber 120 provided by the front cover 12, and the rear thrust ring 23 of the spindle body 20 is opposite to the rear oil chamber 130 provided to the rear cover 13, and the oil The oil inlet conduit 31 of the pressure box 30 is connected to the port of the oil passage 113 provided on the main shaft outer sleeve 11, and the oil return conduit 32 of the oil pressure box 30 is connected to the oil return passage provided by the main shaft outer sleeve 11 114 port, through the oil inlet conduit 31 of the oil pressure box 30, lubricating oil is introduced into the oil chamber 110 in the main shaft outer sleeve 11 and the oil chamber in front of the front cover 12 through the oil inlet passage 113 of the main shaft outer sleeve 11 The oil chamber 130 behind the chamber 120 and the rear cover 13 is exported from the oil return passage 114 to the oil return conduit 32 and returned to the oil pressure box 30, while the lubricating oil is stored in the inner oil chamber 110, the front oil chamber 120 and the rear The hydrostatic pressure balance is formed in the oil chamber 130, so that the oil film of the hydrostatic pressure balance carries the shaft body 21 of the spindle body 20, the front thrust ring 22 and the rear thrust ring 23, and is opposite to the oil chamber in the main shaft outer sleeve 11 The oil chamber 120 before the chamber 110 and the front cover 12 and the oil chamber 130 behind the rear cover 13 form a suspended state, and the front thrust ring 22 and the rear thrust ring 23 are provided on the shaft body 21 of the spindle body 20 to make the spindle The end side of the body 20 has high rigidity and stability when it is under force, so as to achieve the effect of simplifying the structure and improving the stability of the structure.

請配合參閱圖4、5所示，係本發明直結式高速液靜壓磨床主軸結構之第一實施例結合直結式馬達立體分解狀態、第一實施例側視局部剖面狀態示意圖，其整體結構與本發明相同，唯其進一步設有一直結式馬達40，該直結式馬達40內設有電磁驅動組41，其直結式主軸本體10之後蓋13與直結式馬達40之端側結合，而該心軸本體20之軸身21穿制固定於電磁驅動組41上，以使電磁驅動組41作動時直接帶動心軸本體20，避免非直接傳動產生之震動與能量耗損，提升結構運行之穩定性及耐受性，以提升本發明之多重實用性。 Please refer to Figures 4 and 5, which are the first embodiment of the main shaft structure of the direct-connected high-speed hydrostatic grinding machine of the present invention combined with the three-dimensional disassembled state of the direct-connected motor, and the schematic diagram of the partial cross-sectional side view of the first embodiment. The present invention is the same, except that it is further provided with a direct-connected motor 40, and the direct-connected motor 40 is provided with an electromagnetic drive group 41, and the rear cover 13 of the direct-connected main shaft body 10 is combined with the end side of the direct-connected motor 40, and the spindle The shaft body 21 of the main body 20 is threaded and fixed on the electromagnetic drive unit 41, so that the electromagnetic drive unit 41 directly drives the mandrel body 20 when actuated, avoiding vibration and energy loss caused by indirect transmission, and improving the stability and durability of the structure. Acceptability, to enhance the multiple practicability of the present invention.

請配合參閱圖2所示，係本發明直結式高速液靜壓磨床主軸結構之側視剖面狀態示意圖，其整體結構與本發明相同，唯其心軸本體20之前止推環22及後止推環23係可採一體設置或分離套合設置固定於軸身21上，以提升本發明之多重實用性。 Please refer to Fig. 2, which is a side view sectional state diagram of the main shaft structure of the direct-coupled high-speed hydrostatic grinding machine of the present invention. The ring 23 can be fixed on the shaft body 21 either integrally or separately, so as to enhance the multiple practicability of the present invention.

請配合參閱圖2所示，係本發明直結式高速液靜壓磨床主軸結構之側視剖面狀態示意圖，其整體結構與本發明相同，唯其入油道113及回油道114與內油腔室110、前固定座111及後固定部112導通處所設節流閥115係為向量式節流閥，當心軸本體20於直結式主軸本體10之主軸外套筒11內轉速提升時，該內油腔室110內之壓力可藉由向量式節流閥滑動調整潤滑油之油壓及注油量，以提升本發明之多重實用性。 Please refer to Fig. 2, which is a side view sectional state schematic diagram of the main shaft structure of the direct-connected high-speed hydrostatic grinding machine of the present invention. The throttle valve 115 set at the conduction place of the chamber 110, the front fixed seat 111 and the rear fixed part 112 is a vector throttle valve. The pressure in the oil chamber 110 can be slid to adjust the oil pressure and oil injection amount of the lubricating oil through the vector throttle valve, so as to enhance the multiple practicability of the present invention.

請配合參閱圖1所示，係本發明直結式高速液靜壓磨床主軸結構之立體組合狀態示意圖，其整體結構與本發明相同，唯其主軸外套筒11及前蓋12及後蓋13係以螺栓鎖合方式予以結合，以提升本發明之多重實用性。 Please refer to Fig. 1, which is a schematic diagram of the three-dimensional combined state of the main shaft structure of the direct-coupled high-speed hydrostatic grinding machine of the present invention. They are combined in a bolt-locking manner to enhance the multiple practicability of the present invention.

綜上所述，本發明確實可達到上述諸項功能及目的，故本發明應符合專利申請要件，爰依法提出申請。 In summary, the present invention can indeed achieve the above-mentioned functions and purposes, so the present invention should meet the patent application requirements, and the application should be filed according to law.

10:直結式主軸本體 10: Direct-coupled spindle body

11:主軸外套筒 11: Spindle outer sleeve

12:前蓋 12: Front cover

13:後蓋 13:Back cover

20:心軸本體 20: Mandrel body

Claims (7)

一種直結式高速液靜壓磨床主軸結構，其係包括：一直結式主軸本體，所述直結式主軸本體設有一主軸外套筒、一前蓋及一後蓋，該主軸外套筒呈中空設置並於筒內壁向內凹入設有數內油腔室，而該主軸外套筒前側設有一前固定座，且該主軸外套筒後側設有一後固定部，該主軸外套筒之筒身內設有一入油道及一回油道，而該入油道及回油道分別與內油腔室、前固定座及後固定部導通，且該導通處分別設有一節流閥，而該前蓋設有一前油腔室，且該後蓋設有一後油腔室，前述之前蓋與主軸外套筒所設前固定座結合固定，而該後蓋與主軸外套筒所設後固定部結合固定；一心軸本體，所述心軸本體設有一軸身，該軸身之二側分設有一前止推環及一後止推環，其心軸本體容設於直結式主軸本體之主軸外套筒，該軸身相對於主軸外套筒所設數內油腔室，而該前止推環相對設於前蓋所設前油腔室，且該後止推環相對設於後蓋所設後油腔室；以及一油壓箱體，所述油壓箱體設有一入油導管及一回油導管，其入油導管導接至主軸外套筒所設入油道端口，而該回油導管導接至主軸外套筒所設回油道端口。 A direct-connected high-speed hydrostatic grinding machine spindle structure, which includes: a direct-connected spindle body, the direct-connected spindle body is provided with a spindle outer sleeve, a front cover and a rear cover, and the spindle outer sleeve is hollow And several inner oil chambers are recessed inwardly on the inner wall of the barrel, and the front side of the main shaft outer sleeve is provided with a front fixing seat, and the rear side of the main shaft outer sleeve is provided with a rear fixing part. There is an oil inlet passage and an oil return passage in the body, and the oil inlet passage and the oil return passage are respectively connected with the inner oil chamber, the front fixed seat and the rear fixed part, and a throttle valve is provided at the conduction place, and The front cover is provided with a front oil chamber, and the rear cover is provided with a rear oil chamber. The parts are combined and fixed; a mandrel body, the mandrel body is provided with a shaft body, and the two sides of the shaft body are respectively provided with a front thrust ring and a rear thrust ring, and the mandrel body is accommodated on the direct-joint spindle body The outer sleeve of the main shaft, the shaft body is arranged in several inner oil chambers relative to the outer sleeve of the main shaft, and the front thrust ring is arranged opposite to the front oil chamber set in the front cover, and the rear thrust ring is arranged opposite to the rear The rear oil chamber provided by the cover; and an oil pressure box, the oil pressure box is provided with an oil inlet conduit and an oil return conduit, and the oil inlet conduit is connected to the oil inlet port provided by the outer sleeve of the main shaft, The oil return conduit is connected to the oil return passage port set on the outer sleeve of the main shaft. 如請求項1所述之直結式高速液靜壓磨床主軸結構，其中，該心軸本體之前止推環及後止推環係一體設置固定於軸身上。 The main shaft structure of the direct-connected high-speed hydrostatic grinding machine as described in Claim 1, wherein, the front thrust ring and the rear thrust ring of the spindle body are integrally arranged and fixed on the shaft body. 如請求項1所述之直結式高速液靜壓磨床主軸結構，其中，該心軸本體之前止推環及後止推環係分離套合設置固定於軸身上。 The main shaft structure of the direct-connected high-speed hydrostatic grinding machine as described in claim 1, wherein the front thrust ring and the rear thrust ring of the spindle body are separately fitted and fixed on the shaft body. 如請求項1所述之直結式高速液靜壓磨床主軸結構，其中，該主軸外套筒及前蓋及後蓋係以螺栓鎖合方式予以結合。 The main shaft structure of the direct-coupled high-speed hydrostatic grinding machine as described in claim 1, wherein the outer sleeve of the main shaft, the front cover and the rear cover are combined by bolt locking. 如請求項1所述之直結式高速液靜壓磨床主軸結構，其中，該直結式主軸本體之入油道及回油道與內油腔室、前固定座及後固定部導通處所設節流閥係為向量式節流閥，當心軸本體於直結式主軸本體之主軸外套筒內轉速提升時，該內油腔室內之壓力可藉由向量式節流閥滑動調整潤滑油之油壓及注油量。 The main shaft structure of the direct-connected high-speed hydrostatic grinding machine as described in Claim 1, wherein the oil inlet passage and the oil return passage of the direct-connected main shaft body are connected with the inner oil chamber, the front fixed seat and the rear fixed part. The valve system is a vector throttle valve. When the rotation speed of the spindle body increases in the main shaft outer sleeve of the direct-connected spindle body, the pressure in the inner oil chamber can be adjusted by the vector throttle valve sliding to adjust the oil pressure of the lubricating oil and Oil quantity. 如請求項1所述之直結式高速液靜壓磨床主軸結構，其中，該油壓箱體之入油導管，將潤滑油經主軸外套筒之入油道，導入主軸外套筒之內油腔室及前蓋之前油腔室與後蓋之後油腔室，並由回油道導出至回油導管回油入油壓箱體，而潤滑油於內油腔室、前油腔室及後油腔室中形成液靜壓平衡，使液靜壓平衡之油膜承載心軸本體之軸身、前止推環及後止推環，相對主軸外套筒之內油腔室及前蓋之前油腔室與後蓋之後油腔室形成懸浮狀態，而心軸本體之軸身所設前止推環及後止推環，使心軸本體受力作用時端側具有高剛性及穩定性。 The main shaft structure of the direct-connected high-speed hydrostatic grinding machine as described in Claim 1, wherein the oil inlet conduit of the oil pressure box guides lubricating oil into the oil inlet of the main shaft outer sleeve through the oil inlet passage of the main shaft outer sleeve. The oil chamber before the chamber and the front cover and the oil chamber behind the rear cover are exported from the oil return passage to the oil return conduit and returned to the oil pressure box, while the lubricating oil is in the inner oil chamber, the front oil chamber and the rear oil chamber. The hydrostatic pressure balance is formed in the oil chamber, so that the oil film of the hydrostatic pressure balance bears the shaft body of the spindle body, the front thrust ring and the rear thrust ring, and is opposite to the oil chamber in the outer sleeve of the main shaft and the oil in front of the front cover. The chamber and the oil chamber behind the back cover form a suspended state, and the front thrust ring and the rear thrust ring are set on the shaft body of the spindle body, so that the end side of the spindle body has high rigidity and stability when the force is applied. 如請求項1至6中任一項所述之直結式高速液靜壓磨床主軸結構，其中，進一步設有一直結式馬達，該直結式馬達內設有電磁驅動組，其直結式主軸本體之後蓋與直結式馬達之端側結合，而該心軸本體之軸身穿制固定於電磁驅動組上，以使電磁驅動組作動時直接帶動心軸本體，避免非直接傳動產生之震動與能量耗損。The direct-connected high-speed hydrostatic grinding machine spindle structure as described in any one of claims 1 to 6, wherein a direct-connected motor is further provided, and an electromagnetic drive group is provided in the direct-connected motor, and the rear cover of the direct-connected main shaft body Combined with the end and side of the direct-coupled motor, and the shaft body of the spindle body is fixed on the electromagnetic drive unit, so that the electromagnetic drive unit directly drives the spindle body when the electromagnetic drive unit is activated, avoiding vibration and energy loss caused by indirect transmission.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110299806A1 (en) * 2010-06-08 2011-12-08 Leonid Kashchenevsky Spindle, shaft supporting device and method of supporting a rotatable shaft
CN102554718A (en) * 2012-03-12 2012-07-11 无锡市启龙机床有限公司 Main shaft supporting structure of centerless grinder for grinding valve lock groove
CN102785137A (en) * 2012-08-20 2012-11-21 无锡键禾数控机床有限公司 Grinding wheel spindle structure for valve stem numerical-control centerless grinder
WO2015100941A1 (en) * 2013-12-31 2015-07-09 广州市昊志机电股份有限公司 Internal grinding spindle
US20160229027A1 (en) * 2013-10-21 2016-08-11 Isog Technology Gmbh & Co. Kg Spindle of a Tool Grinding Machine
CN111331159A (en) * 2020-03-02 2020-06-26 胡功明 High-precision dynamic and static oil pressure permanent magnet servo programmable positioning multifunctional electric main shaft

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110299806A1 (en) * 2010-06-08 2011-12-08 Leonid Kashchenevsky Spindle, shaft supporting device and method of supporting a rotatable shaft
CN102554718A (en) * 2012-03-12 2012-07-11 无锡市启龙机床有限公司 Main shaft supporting structure of centerless grinder for grinding valve lock groove
CN102785137A (en) * 2012-08-20 2012-11-21 无锡键禾数控机床有限公司 Grinding wheel spindle structure for valve stem numerical-control centerless grinder
US20160229027A1 (en) * 2013-10-21 2016-08-11 Isog Technology Gmbh & Co. Kg Spindle of a Tool Grinding Machine
WO2015100941A1 (en) * 2013-12-31 2015-07-09 广州市昊志机电股份有限公司 Internal grinding spindle
CN111331159A (en) * 2020-03-02 2020-06-26 胡功明 High-precision dynamic and static oil pressure permanent magnet servo programmable positioning multifunctional electric main shaft

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